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Comparing libev/ev.c (file contents):
Revision 1.276 by root, Sun Dec 14 13:03:54 2008 UTC vs.
Revision 1.407 by root, Wed Jan 25 01:32:12 2012 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
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
67# endif 71# endif
68# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
69# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
70# endif 74# endif
71# else 75# else
72# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
73# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
74# endif 78# endif
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
… …
172# define WIN32_LEAN_AND_MEAN 194# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 195# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
176# endif 198# endif
199# undef EV_AVOID_STDIO
177#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
178 209
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
211
212/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG)
214/* use what's provided */
215#elif defined (NSIG)
216# define EV_NSIG (NSIG)
217#elif defined(_NSIG)
218# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX)
220# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX)
222# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX)
224# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG)
226# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG)
228# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE)
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig)
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else
234# error "unable to find value for NSIG, please report"
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif
239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
180 243
181#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 247# else
185# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
186# endif 249# endif
187#endif 250#endif
188 251
189#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 255# else
193# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
194# endif 257# endif
195#endif 258#endif
196 259
197#ifndef EV_USE_REALTIME 260#ifndef EV_USE_REALTIME
198# define EV_USE_REALTIME 0 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 262#endif
200 263
201#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 267# else
205# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
206# endif 269# endif
207#endif 270#endif
208 271
209#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 274#endif
212 275
213#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
214# ifdef _WIN32 277# ifdef _WIN32
215# define EV_USE_POLL 0 278# define EV_USE_POLL 0
216# else 279# else
217# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 281# endif
219#endif 282#endif
220 283
221#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 287# else
225# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
226# endif 289# endif
227#endif 290#endif
228 291
… …
234# define EV_USE_PORT 0 297# define EV_USE_PORT 0
235#endif 298#endif
236 299
237#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 303# else
241# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
242# endif 305# endif
243#endif 306#endif
244 307
245#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 309# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 310#endif
252 311
253#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 313# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 314#endif
260 315
261#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 319# else
265# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
321# endif
322#endif
323
324#ifndef EV_USE_SIGNALFD
325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
326# define EV_USE_SIGNALFD EV_FEATURE_OS
327# else
328# define EV_USE_SIGNALFD 0
266# endif 329# endif
267#endif 330#endif
268 331
269#if 0 /* debugging */ 332#if 0 /* debugging */
270# define EV_VERIFY 3 333# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
273#endif 336#endif
274 337
275#ifndef EV_VERIFY 338#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 340#endif
278 341
279#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 344#endif
282 345
283#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif
349
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h>
354# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1
358# else
359# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0
361# endif
285#endif 362#endif
286 363
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 364/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
288 371
289#ifndef CLOCK_MONOTONIC 372#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 373# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 374# define EV_USE_MONOTONIC 0
292#endif 375#endif
… …
300# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
302#endif 385#endif
303 386
304#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 390# include <sys/select.h>
307# endif 391# endif
308#endif 392#endif
309 393
310#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 395# include <sys/statfs.h>
313# include <sys/inotify.h> 396# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
320 403
321#if EV_SELECT_IS_WINSOCKET 404#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 405# include <winsock.h>
323#endif 406#endif
324 407
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 408#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 410# include <stdint.h>
337# ifdef __cplusplus 411# ifndef EFD_NONBLOCK
338extern "C" { 412# define EFD_NONBLOCK O_NONBLOCK
339# endif 413# endif
340int eventfd (unsigned int initval, int flags); 414# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 415# ifdef O_CLOEXEC
342} 416# define EFD_CLOEXEC O_CLOEXEC
417# else
418# define EFD_CLOEXEC 02000000
419# endif
343# endif 420# endif
421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
422#endif
423
424#if EV_USE_SIGNALFD
425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
426# include <stdint.h>
427# ifndef SFD_NONBLOCK
428# define SFD_NONBLOCK O_NONBLOCK
429# endif
430# ifndef SFD_CLOEXEC
431# ifdef O_CLOEXEC
432# define SFD_CLOEXEC O_CLOEXEC
433# else
434# define SFD_CLOEXEC 02000000
435# endif
436# endif
437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
438
439struct signalfd_siginfo
440{
441 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)];
443};
344#endif 444#endif
345 445
346/**/ 446/**/
347 447
348#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 450#else
351# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
352#endif 452#endif
353 453
354/* 454/*
355 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 457 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 460
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 508 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
371#else 515#else
372# define expect(expr,value) (expr) 516 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 531 #endif
532#endif
378 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
381#define inline_size static inline 937#define inline_size ecb_inline
382 938
383#if EV_MINIMAL 939#if EV_FEATURE_CODE
940# define inline_speed ecb_inline
941#else
384# define inline_speed static noinline 942# define inline_speed static noinline
943#endif
944
945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
946
947#if EV_MINPRI == EV_MAXPRI
948# define ABSPRI(w) (((W)w), 0)
385#else 949#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 950# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
951#endif
391 952
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 953#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 954#define EMPTY2(a,b) /* used to suppress some warnings */
394 955
395typedef ev_watcher *W; 956typedef ev_watcher *W;
… …
397typedef ev_watcher_time *WT; 958typedef ev_watcher_time *WT;
398 959
399#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
401 962
963#if EV_USE_REALTIME
964/* sig_atomic_t is used to avoid per-thread variables or locking but still */
965/* giving it a reasonably high chance of working on typical architectures */
966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
967#endif
968
402#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
405static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
971#endif
972
973#ifndef EV_FD_TO_WIN32_HANDLE
974# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
975#endif
976#ifndef EV_WIN32_HANDLE_TO_FD
977# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
978#endif
979#ifndef EV_WIN32_CLOSE_FD
980# define EV_WIN32_CLOSE_FD(fd) close (fd)
406#endif 981#endif
407 982
408#ifdef _WIN32 983#ifdef _WIN32
409# include "ev_win32.c" 984# include "ev_win32.c"
410#endif 985#endif
411 986
412/*****************************************************************************/ 987/*****************************************************************************/
413 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
1079#if EV_AVOID_STDIO
1080static void noinline ecb_cold
1081ev_printerr (const char *msg)
1082{
1083 write (STDERR_FILENO, msg, strlen (msg));
1084}
1085#endif
1086
414static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
415 1088
416void 1089void ecb_cold
417ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
418{ 1091{
419 syserr_cb = cb; 1092 syserr_cb = cb;
420} 1093}
421 1094
422static void noinline 1095static void noinline ecb_cold
423ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
424{ 1097{
425 if (!msg) 1098 if (!msg)
426 msg = "(libev) system error"; 1099 msg = "(libev) system error";
427 1100
428 if (syserr_cb) 1101 if (syserr_cb)
429 syserr_cb (msg); 1102 syserr_cb (msg);
430 else 1103 else
431 { 1104 {
1105#if EV_AVOID_STDIO
1106 ev_printerr (msg);
1107 ev_printerr (": ");
1108 ev_printerr (strerror (errno));
1109 ev_printerr ("\n");
1110#else
432 perror (msg); 1111 perror (msg);
1112#endif
433 abort (); 1113 abort ();
434 } 1114 }
435} 1115}
436 1116
437static void * 1117static void *
438ev_realloc_emul (void *ptr, long size) 1118ev_realloc_emul (void *ptr, long size)
439{ 1119{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
440 /* some systems, notably openbsd and darwin, fail to properly 1123 /* some systems, notably openbsd and darwin, fail to properly
441 * implement realloc (x, 0) (as required by both ansi c-98 and 1124 * implement realloc (x, 0) (as required by both ansi c-89 and
442 * the single unix specification, so work around them here. 1125 * the single unix specification, so work around them here.
443 */ 1126 */
444 1127
445 if (size) 1128 if (size)
446 return realloc (ptr, size); 1129 return realloc (ptr, size);
447 1130
448 free (ptr); 1131 free (ptr);
449 return 0; 1132 return 0;
1133#endif
450} 1134}
451 1135
452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
453 1137
454void 1138void ecb_cold
455ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
456{ 1140{
457 alloc = cb; 1141 alloc = cb;
458} 1142}
459 1143
… …
462{ 1146{
463 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
464 1148
465 if (!ptr && size) 1149 if (!ptr && size)
466 { 1150 {
1151#if EV_AVOID_STDIO
1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1153#else
467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1155#endif
468 abort (); 1156 abort ();
469 } 1157 }
470 1158
471 return ptr; 1159 return ptr;
472} 1160}
… …
474#define ev_malloc(size) ev_realloc (0, (size)) 1162#define ev_malloc(size) ev_realloc (0, (size))
475#define ev_free(ptr) ev_realloc ((ptr), 0) 1163#define ev_free(ptr) ev_realloc ((ptr), 0)
476 1164
477/*****************************************************************************/ 1165/*****************************************************************************/
478 1166
1167/* set in reify when reification needed */
1168#define EV_ANFD_REIFY 1
1169
1170/* file descriptor info structure */
479typedef struct 1171typedef struct
480{ 1172{
481 WL head; 1173 WL head;
482 unsigned char events; 1174 unsigned char events; /* the events watched for */
483 unsigned char reify; 1175 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused; 1177 unsigned char unused;
486#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif 1180#endif
489#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
490 SOCKET handle; 1182 SOCKET handle;
491#endif 1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
1186#endif
492} ANFD; 1187} ANFD;
493 1188
1189/* stores the pending event set for a given watcher */
494typedef struct 1190typedef struct
495{ 1191{
496 W w; 1192 W w;
497 int events; 1193 int events; /* the pending event set for the given watcher */
498} ANPENDING; 1194} ANPENDING;
499 1195
500#if EV_USE_INOTIFY 1196#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */ 1197/* hash table entry per inotify-id */
502typedef struct 1198typedef struct
… …
505} ANFS; 1201} ANFS;
506#endif 1202#endif
507 1203
508/* Heap Entry */ 1204/* Heap Entry */
509#if EV_HEAP_CACHE_AT 1205#if EV_HEAP_CACHE_AT
1206 /* a heap element */
510 typedef struct { 1207 typedef struct {
511 ev_tstamp at; 1208 ev_tstamp at;
512 WT w; 1209 WT w;
513 } ANHE; 1210 } ANHE;
514 1211
515 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1212 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1213 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1214 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else 1215#else
1216 /* a heap element */
519 typedef WT ANHE; 1217 typedef WT ANHE;
520 1218
521 #define ANHE_w(he) (he) 1219 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at 1220 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he) 1221 #define ANHE_at_cache(he)
… …
534 #undef VAR 1232 #undef VAR
535 }; 1233 };
536 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
537 1235
538 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
539 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
540 1238
541#else 1239#else
542 1240
543 ev_tstamp ev_rt_now; 1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
544 #define VAR(name,decl) static decl; 1242 #define VAR(name,decl) static decl;
545 #include "ev_vars.h" 1243 #include "ev_vars.h"
546 #undef VAR 1244 #undef VAR
547 1245
548 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
549 1247
550#endif 1248#endif
551 1249
1250#if EV_FEATURE_API
1251# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1252# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1253# define EV_INVOKE_PENDING invoke_cb (EV_A)
1254#else
1255# define EV_RELEASE_CB (void)0
1256# define EV_ACQUIRE_CB (void)0
1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1258#endif
1259
1260#define EVBREAK_RECURSE 0x80
1261
552/*****************************************************************************/ 1262/*****************************************************************************/
553 1263
1264#ifndef EV_HAVE_EV_TIME
554ev_tstamp 1265ev_tstamp
555ev_time (void) 1266ev_time (void)
556{ 1267{
557#if EV_USE_REALTIME 1268#if EV_USE_REALTIME
1269 if (expect_true (have_realtime))
1270 {
558 struct timespec ts; 1271 struct timespec ts;
559 clock_gettime (CLOCK_REALTIME, &ts); 1272 clock_gettime (CLOCK_REALTIME, &ts);
560 return ts.tv_sec + ts.tv_nsec * 1e-9; 1273 return ts.tv_sec + ts.tv_nsec * 1e-9;
561#else 1274 }
1275#endif
1276
562 struct timeval tv; 1277 struct timeval tv;
563 gettimeofday (&tv, 0); 1278 gettimeofday (&tv, 0);
564 return tv.tv_sec + tv.tv_usec * 1e-6; 1279 return tv.tv_sec + tv.tv_usec * 1e-6;
565#endif
566} 1280}
1281#endif
567 1282
568ev_tstamp inline_size 1283inline_size ev_tstamp
569get_clock (void) 1284get_clock (void)
570{ 1285{
571#if EV_USE_MONOTONIC 1286#if EV_USE_MONOTONIC
572 if (expect_true (have_monotonic)) 1287 if (expect_true (have_monotonic))
573 { 1288 {
… …
594 if (delay > 0.) 1309 if (delay > 0.)
595 { 1310 {
596#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
597 struct timespec ts; 1312 struct timespec ts;
598 1313
599 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
603#elif defined(_WIN32) 1316#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
605#else 1318#else
606 struct timeval tv; 1319 struct timeval tv;
607 1320
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
614 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
615#endif 1326#endif
616 } 1327 }
617} 1328}
618 1329
619/*****************************************************************************/ 1330/*****************************************************************************/
620 1331
621#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622 1333
623int inline_size 1334/* find a suitable new size for the given array, */
1335/* hopefully by rounding to a nice-to-malloc size */
1336inline_size int
624array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
625{ 1338{
626 int ncur = cur + 1; 1339 int ncur = cur + 1;
627 1340
628 do 1341 do
629 ncur <<= 1; 1342 ncur <<= 1;
630 while (cnt > ncur); 1343 while (cnt > ncur);
631 1344
632 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
633 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
634 { 1347 {
635 ncur *= elem; 1348 ncur *= elem;
636 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
637 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
639 } 1352 }
640 1353
641 return ncur; 1354 return ncur;
642} 1355}
643 1356
644static noinline void * 1357static void * noinline ecb_cold
645array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
646{ 1359{
647 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
648 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
649} 1362}
… …
652 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
653 1366
654#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
655 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
656 { \ 1369 { \
657 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
658 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
659 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
660 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
661 } 1374 }
662 1375
… …
669 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1382 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670 } 1383 }
671#endif 1384#endif
672 1385
673#define array_free(stem, idx) \ 1386#define array_free(stem, idx) \
674 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1387 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
675 1388
676/*****************************************************************************/ 1389/*****************************************************************************/
1390
1391/* dummy callback for pending events */
1392static void noinline
1393pendingcb (EV_P_ ev_prepare *w, int revents)
1394{
1395}
677 1396
678void noinline 1397void noinline
679ev_feed_event (EV_P_ void *w, int revents) 1398ev_feed_event (EV_P_ void *w, int revents)
680{ 1399{
681 W w_ = (W)w; 1400 W w_ = (W)w;
… …
690 pendings [pri][w_->pending - 1].w = w_; 1409 pendings [pri][w_->pending - 1].w = w_;
691 pendings [pri][w_->pending - 1].events = revents; 1410 pendings [pri][w_->pending - 1].events = revents;
692 } 1411 }
693} 1412}
694 1413
695void inline_speed 1414inline_speed void
1415feed_reverse (EV_P_ W w)
1416{
1417 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1418 rfeeds [rfeedcnt++] = w;
1419}
1420
1421inline_size void
1422feed_reverse_done (EV_P_ int revents)
1423{
1424 do
1425 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1426 while (rfeedcnt);
1427}
1428
1429inline_speed void
696queue_events (EV_P_ W *events, int eventcnt, int type) 1430queue_events (EV_P_ W *events, int eventcnt, int type)
697{ 1431{
698 int i; 1432 int i;
699 1433
700 for (i = 0; i < eventcnt; ++i) 1434 for (i = 0; i < eventcnt; ++i)
701 ev_feed_event (EV_A_ events [i], type); 1435 ev_feed_event (EV_A_ events [i], type);
702} 1436}
703 1437
704/*****************************************************************************/ 1438/*****************************************************************************/
705 1439
706void inline_speed 1440inline_speed void
707fd_event (EV_P_ int fd, int revents) 1441fd_event_nocheck (EV_P_ int fd, int revents)
708{ 1442{
709 ANFD *anfd = anfds + fd; 1443 ANFD *anfd = anfds + fd;
710 ev_io *w; 1444 ev_io *w;
711 1445
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1446 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
716 if (ev) 1450 if (ev)
717 ev_feed_event (EV_A_ (W)w, ev); 1451 ev_feed_event (EV_A_ (W)w, ev);
718 } 1452 }
719} 1453}
720 1454
1455/* do not submit kernel events for fds that have reify set */
1456/* because that means they changed while we were polling for new events */
1457inline_speed void
1458fd_event (EV_P_ int fd, int revents)
1459{
1460 ANFD *anfd = anfds + fd;
1461
1462 if (expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents);
1464}
1465
721void 1466void
722ev_feed_fd_event (EV_P_ int fd, int revents) 1467ev_feed_fd_event (EV_P_ int fd, int revents)
723{ 1468{
724 if (fd >= 0 && fd < anfdmax) 1469 if (fd >= 0 && fd < anfdmax)
725 fd_event (EV_A_ fd, revents); 1470 fd_event_nocheck (EV_A_ fd, revents);
726} 1471}
727 1472
728void inline_size 1473/* make sure the external fd watch events are in-sync */
1474/* with the kernel/libev internal state */
1475inline_size void
729fd_reify (EV_P) 1476fd_reify (EV_P)
730{ 1477{
731 int i; 1478 int i;
1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
732 1504
733 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
734 { 1506 {
735 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
736 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
737 ev_io *w; 1509 ev_io *w;
738 1510
739 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
740 1513
741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
742 events |= (unsigned char)w->events;
743 1515
744#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
745 if (events)
746 { 1517 {
747 unsigned long arg; 1518 anfd->events = 0;
748 #ifdef EV_FD_TO_WIN32_HANDLE 1519
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
750 #else 1521 anfd->events |= (unsigned char)w->events;
751 anfd->handle = _get_osfhandle (fd); 1522
752 #endif 1523 if (o_events != anfd->events)
753 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1524 o_reify = EV__IOFDSET; /* actually |= */
754 } 1525 }
755#endif
756 1526
757 { 1527 if (o_reify & EV__IOFDSET)
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
761 anfd->reify = 0;
762 anfd->events = events;
763
764 if (o_events != events || o_reify & EV_IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
766 }
767 } 1529 }
768 1530
769 fdchangecnt = 0; 1531 fdchangecnt = 0;
770} 1532}
771 1533
772void inline_size 1534/* something about the given fd changed */
1535inline_size void
773fd_change (EV_P_ int fd, int flags) 1536fd_change (EV_P_ int fd, int flags)
774{ 1537{
775 unsigned char reify = anfds [fd].reify; 1538 unsigned char reify = anfds [fd].reify;
776 anfds [fd].reify |= flags; 1539 anfds [fd].reify |= flags;
777 1540
… …
781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1544 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
783 } 1546 }
784} 1547}
785 1548
786void inline_speed 1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1550inline_speed void ecb_cold
787fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
788{ 1552{
789 ev_io *w; 1553 ev_io *w;
790 1554
791 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
793 ev_io_stop (EV_A_ w); 1557 ev_io_stop (EV_A_ w);
794 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
795 } 1559 }
796} 1560}
797 1561
798int inline_size 1562/* check whether the given fd is actually valid, for error recovery */
1563inline_size int ecb_cold
799fd_valid (int fd) 1564fd_valid (int fd)
800{ 1565{
801#ifdef _WIN32 1566#ifdef _WIN32
802 return _get_osfhandle (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
803#else 1568#else
804 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
805#endif 1570#endif
806} 1571}
807 1572
808/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
809static void noinline 1574static void noinline ecb_cold
810fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
811{ 1576{
812 int fd; 1577 int fd;
813 1578
814 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
816 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
817 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
818} 1583}
819 1584
820/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
821static void noinline 1586static void noinline ecb_cold
822fd_enomem (EV_P) 1587fd_enomem (EV_P)
823{ 1588{
824 int fd; 1589 int fd;
825 1590
826 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
827 if (anfds [fd].events) 1592 if (anfds [fd].events)
828 { 1593 {
829 fd_kill (EV_A_ fd); 1594 fd_kill (EV_A_ fd);
830 return; 1595 break;
831 } 1596 }
832} 1597}
833 1598
834/* usually called after fork if backend needs to re-arm all fds from scratch */ 1599/* usually called after fork if backend needs to re-arm all fds from scratch */
835static void noinline 1600static void noinline
… …
840 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
841 if (anfds [fd].events) 1606 if (anfds [fd].events)
842 { 1607 {
843 anfds [fd].events = 0; 1608 anfds [fd].events = 0;
844 anfds [fd].emask = 0; 1609 anfds [fd].emask = 0;
845 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1610 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846 } 1611 }
847} 1612}
848 1613
1614/* used to prepare libev internal fd's */
1615/* this is not fork-safe */
1616inline_speed void
1617fd_intern (int fd)
1618{
1619#ifdef _WIN32
1620 unsigned long arg = 1;
1621 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1622#else
1623 fcntl (fd, F_SETFD, FD_CLOEXEC);
1624 fcntl (fd, F_SETFL, O_NONBLOCK);
1625#endif
1626}
1627
849/*****************************************************************************/ 1628/*****************************************************************************/
850 1629
851/* 1630/*
852 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * the heap functions want a real array index. array index 0 is guaranteed to not
853 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
854 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
855 */ 1634 */
856 1635
857/* 1636/*
… …
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1645#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1646#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k)) 1647#define UPHEAP_DONE(p,k) ((p) == (k))
869 1648
870/* away from the root */ 1649/* away from the root */
871void inline_speed 1650inline_speed void
872downheap (ANHE *heap, int N, int k) 1651downheap (ANHE *heap, int N, int k)
873{ 1652{
874 ANHE he = heap [k]; 1653 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0; 1654 ANHE *E = heap + N + HEAP0;
876 1655
… …
916#define HEAP0 1 1695#define HEAP0 1
917#define HPARENT(k) ((k) >> 1) 1696#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p)) 1697#define UPHEAP_DONE(p,k) (!(p))
919 1698
920/* away from the root */ 1699/* away from the root */
921void inline_speed 1700inline_speed void
922downheap (ANHE *heap, int N, int k) 1701downheap (ANHE *heap, int N, int k)
923{ 1702{
924 ANHE he = heap [k]; 1703 ANHE he = heap [k];
925 1704
926 for (;;) 1705 for (;;)
927 { 1706 {
928 int c = k << 1; 1707 int c = k << 1;
929 1708
930 if (c > N + HEAP0 - 1) 1709 if (c >= N + HEAP0)
931 break; 1710 break;
932 1711
933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1712 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
934 ? 1 : 0; 1713 ? 1 : 0;
935 1714
… …
946 ev_active (ANHE_w (he)) = k; 1725 ev_active (ANHE_w (he)) = k;
947} 1726}
948#endif 1727#endif
949 1728
950/* towards the root */ 1729/* towards the root */
951void inline_speed 1730inline_speed void
952upheap (ANHE *heap, int k) 1731upheap (ANHE *heap, int k)
953{ 1732{
954 ANHE he = heap [k]; 1733 ANHE he = heap [k];
955 1734
956 for (;;) 1735 for (;;)
… …
967 1746
968 heap [k] = he; 1747 heap [k] = he;
969 ev_active (ANHE_w (he)) = k; 1748 ev_active (ANHE_w (he)) = k;
970} 1749}
971 1750
972void inline_size 1751/* move an element suitably so it is in a correct place */
1752inline_size void
973adjustheap (ANHE *heap, int N, int k) 1753adjustheap (ANHE *heap, int N, int k)
974{ 1754{
975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1755 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
976 upheap (heap, k); 1756 upheap (heap, k);
977 else 1757 else
978 downheap (heap, N, k); 1758 downheap (heap, N, k);
979} 1759}
980 1760
981/* rebuild the heap: this function is used only once and executed rarely */ 1761/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size 1762inline_size void
983reheap (ANHE *heap, int N) 1763reheap (ANHE *heap, int N)
984{ 1764{
985 int i; 1765 int i;
986 1766
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1767 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
990 upheap (heap, i + HEAP0); 1770 upheap (heap, i + HEAP0);
991} 1771}
992 1772
993/*****************************************************************************/ 1773/*****************************************************************************/
994 1774
1775/* associate signal watchers to a signal signal */
995typedef struct 1776typedef struct
996{ 1777{
1778 EV_ATOMIC_T pending;
1779#if EV_MULTIPLICITY
1780 EV_P;
1781#endif
997 WL head; 1782 WL head;
998 EV_ATOMIC_T gotsig;
999} ANSIG; 1783} ANSIG;
1000 1784
1001static ANSIG *signals; 1785static ANSIG signals [EV_NSIG - 1];
1002static int signalmax;
1003
1004static EV_ATOMIC_T gotsig;
1005 1786
1006/*****************************************************************************/ 1787/*****************************************************************************/
1007 1788
1008void inline_speed 1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1009fd_intern (int fd)
1010{
1011#ifdef _WIN32
1012 unsigned long arg = 1;
1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1014#else
1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
1016 fcntl (fd, F_SETFL, O_NONBLOCK);
1017#endif
1018}
1019 1790
1020static void noinline 1791static void noinline ecb_cold
1021evpipe_init (EV_P) 1792evpipe_init (EV_P)
1022{ 1793{
1023 if (!ev_is_active (&pipeev)) 1794 if (!ev_is_active (&pipe_w))
1024 { 1795 {
1025#if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL)
1026 if ((evfd = eventfd (0, 0)) >= 0) 1799 evfd = eventfd (0, 0);
1800
1801 if (evfd >= 0)
1027 { 1802 {
1028 evpipe [0] = -1; 1803 evpipe [0] = -1;
1029 fd_intern (evfd); 1804 fd_intern (evfd); /* doing it twice doesn't hurt */
1030 ev_io_set (&pipeev, evfd, EV_READ); 1805 ev_io_set (&pipe_w, evfd, EV_READ);
1031 } 1806 }
1032 else 1807 else
1033#endif 1808# endif
1034 { 1809 {
1035 while (pipe (evpipe)) 1810 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe"); 1811 ev_syserr ("(libev) error creating signal/async pipe");
1037 1812
1038 fd_intern (evpipe [0]); 1813 fd_intern (evpipe [0]);
1039 fd_intern (evpipe [1]); 1814 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ); 1815 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041 } 1816 }
1042 1817
1043 ev_io_start (EV_A_ &pipeev); 1818 ev_io_start (EV_A_ &pipe_w);
1044 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 } 1820 }
1046} 1821}
1047 1822
1048void inline_size 1823inline_speed void
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{ 1825{
1051 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1052 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1053 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1054
1055 *flag = 1;
1056 1844
1057#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1846 if (evfd >= 0)
1059 { 1847 {
1060 uint64_t counter = 1; 1848 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1062 } 1850 }
1063 else 1851 else
1064#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1065 write (evpipe [1], &old_errno, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1066 1861
1067 errno = old_errno; 1862 errno = old_errno;
1068 } 1863 }
1069} 1864}
1070 1865
1866/* called whenever the libev signal pipe */
1867/* got some events (signal, async) */
1071static void 1868static void
1072pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1073{ 1870{
1871 int i;
1872
1873 if (revents & EV_READ)
1874 {
1074#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1075 if (evfd >= 0) 1876 if (evfd >= 0)
1076 { 1877 {
1077 uint64_t counter; 1878 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1079 } 1880 }
1080 else 1881 else
1081#endif 1882#endif
1082 { 1883 {
1083 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1084 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1888 }
1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1893 if (sig_pending)
1085 } 1894 {
1895 sig_pending = 0;
1086 1896
1087 if (gotsig && ev_is_default_loop (EV_A)) 1897 for (i = EV_NSIG - 1; i--; )
1088 { 1898 if (expect_false (signals [i].pending))
1089 int signum;
1090 gotsig = 0;
1091
1092 for (signum = signalmax; signum--; )
1093 if (signals [signum].gotsig)
1094 ev_feed_signal_event (EV_A_ signum + 1); 1899 ev_feed_signal_event (EV_A_ i + 1);
1095 } 1900 }
1901#endif
1096 1902
1097#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1098 if (gotasync) 1904 if (async_pending)
1099 { 1905 {
1100 int i; 1906 async_pending = 0;
1101 gotasync = 0;
1102 1907
1103 for (i = asynccnt; i--; ) 1908 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent) 1909 if (asyncs [i]->sent)
1105 { 1910 {
1106 asyncs [i]->sent = 0; 1911 asyncs [i]->sent = 0;
… …
1110#endif 1915#endif
1111} 1916}
1112 1917
1113/*****************************************************************************/ 1918/*****************************************************************************/
1114 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1115static void 1937static void
1116ev_sighandler (int signum) 1938ev_sighandler (int signum)
1117{ 1939{
1118#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct;
1120#endif
1121
1122#if _WIN32 1940#ifdef _WIN32
1123 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1124#endif 1942#endif
1125 1943
1126 signals [signum - 1].gotsig = 1; 1944 ev_feed_signal (signum);
1127 evpipe_write (EV_A_ &gotsig);
1128} 1945}
1129 1946
1130void noinline 1947void noinline
1131ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1132{ 1949{
1133 WL w; 1950 WL w;
1134 1951
1952 if (expect_false (signum <= 0 || signum > EV_NSIG))
1953 return;
1954
1955 --signum;
1956
1135#if EV_MULTIPLICITY 1957#if EV_MULTIPLICITY
1136 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1958 /* it is permissible to try to feed a signal to the wrong loop */
1137#endif 1959 /* or, likely more useful, feeding a signal nobody is waiting for */
1138 1960
1139 --signum; 1961 if (expect_false (signals [signum].loop != EV_A))
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return; 1962 return;
1963#endif
1143 1964
1144 signals [signum].gotsig = 0; 1965 signals [signum].pending = 0;
1145 1966
1146 for (w = signals [signum].head; w; w = w->next) 1967 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148} 1969}
1149 1970
1971#if EV_USE_SIGNALFD
1972static void
1973sigfdcb (EV_P_ ev_io *iow, int revents)
1974{
1975 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1976
1977 for (;;)
1978 {
1979 ssize_t res = read (sigfd, si, sizeof (si));
1980
1981 /* not ISO-C, as res might be -1, but works with SuS */
1982 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1983 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1984
1985 if (res < (ssize_t)sizeof (si))
1986 break;
1987 }
1988}
1989#endif
1990
1991#endif
1992
1150/*****************************************************************************/ 1993/*****************************************************************************/
1151 1994
1995#if EV_CHILD_ENABLE
1152static WL childs [EV_PID_HASHSIZE]; 1996static WL childs [EV_PID_HASHSIZE];
1153
1154#ifndef _WIN32
1155 1997
1156static ev_signal childev; 1998static ev_signal childev;
1157 1999
1158#ifndef WIFCONTINUED 2000#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0 2001# define WIFCONTINUED(status) 0
1160#endif 2002#endif
1161 2003
1162void inline_speed 2004/* handle a single child status event */
2005inline_speed void
1163child_reap (EV_P_ int chain, int pid, int status) 2006child_reap (EV_P_ int chain, int pid, int status)
1164{ 2007{
1165 ev_child *w; 2008 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2009 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167 2010
1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2011 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 { 2012 {
1170 if ((w->pid == pid || !w->pid) 2013 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1))) 2014 && (!traced || (w->flags & 1)))
1172 { 2015 {
1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2016 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1180 2023
1181#ifndef WCONTINUED 2024#ifndef WCONTINUED
1182# define WCONTINUED 0 2025# define WCONTINUED 0
1183#endif 2026#endif
1184 2027
2028/* called on sigchld etc., calls waitpid */
1185static void 2029static void
1186childcb (EV_P_ ev_signal *sw, int revents) 2030childcb (EV_P_ ev_signal *sw, int revents)
1187{ 2031{
1188 int pid, status; 2032 int pid, status;
1189 2033
… …
1197 /* make sure we are called again until all children have been reaped */ 2041 /* make sure we are called again until all children have been reaped */
1198 /* we need to do it this way so that the callback gets called before we continue */ 2042 /* we need to do it this way so that the callback gets called before we continue */
1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2043 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1200 2044
1201 child_reap (EV_A_ pid, pid, status); 2045 child_reap (EV_A_ pid, pid, status);
1202 if (EV_PID_HASHSIZE > 1) 2046 if ((EV_PID_HASHSIZE) > 1)
1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2047 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1204} 2048}
1205 2049
1206#endif 2050#endif
1207 2051
1208/*****************************************************************************/ 2052/*****************************************************************************/
1209 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1210#if EV_USE_PORT 2057#if EV_USE_PORT
1211# include "ev_port.c" 2058# include "ev_port.c"
1212#endif 2059#endif
1213#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1214# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1221#endif 2068#endif
1222#if EV_USE_SELECT 2069#if EV_USE_SELECT
1223# include "ev_select.c" 2070# include "ev_select.c"
1224#endif 2071#endif
1225 2072
1226int 2073int ecb_cold
1227ev_version_major (void) 2074ev_version_major (void)
1228{ 2075{
1229 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1230} 2077}
1231 2078
1232int 2079int ecb_cold
1233ev_version_minor (void) 2080ev_version_minor (void)
1234{ 2081{
1235 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1236} 2083}
1237 2084
1238/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1239int inline_size 2086int inline_size ecb_cold
1240enable_secure (void) 2087enable_secure (void)
1241{ 2088{
1242#ifdef _WIN32 2089#ifdef _WIN32
1243 return 0; 2090 return 0;
1244#else 2091#else
1245 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1246 || getgid () != getegid (); 2093 || getgid () != getegid ();
1247#endif 2094#endif
1248} 2095}
1249 2096
1250unsigned int 2097unsigned int ecb_cold
1251ev_supported_backends (void) 2098ev_supported_backends (void)
1252{ 2099{
1253 unsigned int flags = 0; 2100 unsigned int flags = 0;
1254 2101
1255 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1259 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1260 2107
1261 return flags; 2108 return flags;
1262} 2109}
1263 2110
1264unsigned int 2111unsigned int ecb_cold
1265ev_recommended_backends (void) 2112ev_recommended_backends (void)
1266{ 2113{
1267 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1268 2115
1269#ifndef __NetBSD__ 2116#ifndef __NetBSD__
1270 /* kqueue is borked on everything but netbsd apparently */ 2117 /* kqueue is borked on everything but netbsd apparently */
1271 /* it usually doesn't work correctly on anything but sockets and pipes */ 2118 /* it usually doesn't work correctly on anything but sockets and pipes */
1272 flags &= ~EVBACKEND_KQUEUE; 2119 flags &= ~EVBACKEND_KQUEUE;
1273#endif 2120#endif
1274#ifdef __APPLE__ 2121#ifdef __APPLE__
1275 // flags &= ~EVBACKEND_KQUEUE & ~EVBACKEND_POLL; for documentation 2122 /* only select works correctly on that "unix-certified" platform */
1276 flags &= ~EVBACKEND_SELECT; 2123 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2124 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2125#endif
2126#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1277#endif 2128#endif
1278 2129
1279 return flags; 2130 return flags;
1280} 2131}
1281 2132
1282unsigned int 2133unsigned int ecb_cold
1283ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1284{ 2135{
1285 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1286 2137
1287 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1288 /* please fix it and tell me how to detect the fix */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1289 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1290 2141
1291 return flags; 2142 return flags;
1292} 2143}
1293 2144
1294unsigned int 2145unsigned int
1295ev_backend (EV_P) 2146ev_backend (EV_P)
1296{ 2147{
1297 return backend; 2148 return backend;
1298} 2149}
1299 2150
2151#if EV_FEATURE_API
1300unsigned int 2152unsigned int
1301ev_loop_count (EV_P) 2153ev_iteration (EV_P)
1302{ 2154{
1303 return loop_count; 2155 return loop_count;
2156}
2157
2158unsigned int
2159ev_depth (EV_P)
2160{
2161 return loop_depth;
1304} 2162}
1305 2163
1306void 2164void
1307ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308{ 2166{
… …
1313ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314{ 2172{
1315 timeout_blocktime = interval; 2173 timeout_blocktime = interval;
1316} 2174}
1317 2175
2176void
2177ev_set_userdata (EV_P_ void *data)
2178{
2179 userdata = data;
2180}
2181
2182void *
2183ev_userdata (EV_P)
2184{
2185 return userdata;
2186}
2187
2188void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2190{
2191 invoke_cb = invoke_pending_cb;
2192}
2193
2194void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2196{
2197 release_cb = release;
2198 acquire_cb = acquire;
2199}
2200#endif
2201
2202/* initialise a loop structure, must be zero-initialised */
1318static void noinline 2203static void noinline ecb_cold
1319loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1320{ 2205{
1321 if (!backend) 2206 if (!backend)
1322 { 2207 {
2208 origflags = flags;
2209
2210#if EV_USE_REALTIME
2211 if (!have_realtime)
2212 {
2213 struct timespec ts;
2214
2215 if (!clock_gettime (CLOCK_REALTIME, &ts))
2216 have_realtime = 1;
2217 }
2218#endif
2219
1323#if EV_USE_MONOTONIC 2220#if EV_USE_MONOTONIC
2221 if (!have_monotonic)
1324 { 2222 {
1325 struct timespec ts; 2223 struct timespec ts;
2224
1326 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2225 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327 have_monotonic = 1; 2226 have_monotonic = 1;
1328 } 2227 }
1329#endif
1330
1331 ev_rt_now = ev_time ();
1332 mn_now = get_clock ();
1333 now_floor = mn_now;
1334 rtmn_diff = ev_rt_now - mn_now;
1335
1336 io_blocktime = 0.;
1337 timeout_blocktime = 0.;
1338 backend = 0;
1339 backend_fd = -1;
1340 gotasync = 0;
1341#if EV_USE_INOTIFY
1342 fs_fd = -2;
1343#endif 2228#endif
1344 2229
1345 /* pid check not overridable via env */ 2230 /* pid check not overridable via env */
1346#ifndef _WIN32 2231#ifndef _WIN32
1347 if (flags & EVFLAG_FORKCHECK) 2232 if (flags & EVFLAG_FORKCHECK)
… …
1351 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1352 && !enable_secure () 2237 && !enable_secure ()
1353 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1354 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1355 2240
1356 if (!(flags & 0x0000ffffU)) 2241 ev_rt_now = ev_time ();
2242 mn_now = get_clock ();
2243 now_floor = mn_now;
2244 rtmn_diff = ev_rt_now - mn_now;
2245#if EV_FEATURE_API
2246 invoke_cb = ev_invoke_pending;
2247#endif
2248
2249 io_blocktime = 0.;
2250 timeout_blocktime = 0.;
2251 backend = 0;
2252 backend_fd = -1;
2253 sig_pending = 0;
2254#if EV_ASYNC_ENABLE
2255 async_pending = 0;
2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
2259#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif
2262#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2264#endif
2265
2266 if (!(flags & EVBACKEND_MASK))
1357 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1358 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1359#if EV_USE_PORT 2272#if EV_USE_PORT
1360 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1361#endif 2274#endif
1362#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1363 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1370#endif 2283#endif
1371#if EV_USE_SELECT 2284#if EV_USE_SELECT
1372 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373#endif 2286#endif
1374 2287
2288 ev_prepare_init (&pending_w, pendingcb);
2289
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1375 ev_init (&pipeev, pipecb); 2291 ev_init (&pipe_w, pipecb);
1376 ev_set_priority (&pipeev, EV_MAXPRI); 2292 ev_set_priority (&pipe_w, EV_MAXPRI);
2293#endif
1377 } 2294 }
1378} 2295}
1379 2296
1380static void noinline 2297/* free up a loop structure */
2298void ecb_cold
1381loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1382{ 2300{
1383 int i; 2301 int i;
1384 2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
2325
1385 if (ev_is_active (&pipeev)) 2326 if (ev_is_active (&pipe_w))
1386 { 2327 {
1387 ev_ref (EV_A); /* signal watcher */ 2328 /*ev_ref (EV_A);*/
1388 ev_io_stop (EV_A_ &pipeev); 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
1389 2330
1390#if EV_USE_EVENTFD 2331#if EV_USE_EVENTFD
1391 if (evfd >= 0) 2332 if (evfd >= 0)
1392 close (evfd); 2333 close (evfd);
1393#endif 2334#endif
1394 2335
1395 if (evpipe [0] >= 0) 2336 if (evpipe [0] >= 0)
1396 { 2337 {
1397 close (evpipe [0]); 2338 EV_WIN32_CLOSE_FD (evpipe [0]);
1398 close (evpipe [1]); 2339 EV_WIN32_CLOSE_FD (evpipe [1]);
1399 } 2340 }
1400 } 2341 }
2342
2343#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w))
2345 close (sigfd);
2346#endif
1401 2347
1402#if EV_USE_INOTIFY 2348#if EV_USE_INOTIFY
1403 if (fs_fd >= 0) 2349 if (fs_fd >= 0)
1404 close (fs_fd); 2350 close (fs_fd);
1405#endif 2351#endif
1406 2352
1407 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1408 close (backend_fd); 2354 close (backend_fd);
1409 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1410#if EV_USE_PORT 2359#if EV_USE_PORT
1411 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1412#endif 2361#endif
1413#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1414 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1429#if EV_IDLE_ENABLE 2378#if EV_IDLE_ENABLE
1430 array_free (idle, [i]); 2379 array_free (idle, [i]);
1431#endif 2380#endif
1432 } 2381 }
1433 2382
1434 ev_free (anfds); anfdmax = 0; 2383 ev_free (anfds); anfds = 0; anfdmax = 0;
1435 2384
1436 /* have to use the microsoft-never-gets-it-right macro */ 2385 /* have to use the microsoft-never-gets-it-right macro */
2386 array_free (rfeed, EMPTY);
1437 array_free (fdchange, EMPTY); 2387 array_free (fdchange, EMPTY);
1438 array_free (timer, EMPTY); 2388 array_free (timer, EMPTY);
1439#if EV_PERIODIC_ENABLE 2389#if EV_PERIODIC_ENABLE
1440 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1441#endif 2391#endif
1442#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1443 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1444#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1445 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1446 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1447#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1448 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1449#endif 2402#endif
1450 2403
1451 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1452} 2414}
1453 2415
1454#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1455void inline_size infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1456#endif 2418#endif
1457 2419
1458void inline_size 2420inline_size void
1459loop_fork (EV_P) 2421loop_fork (EV_P)
1460{ 2422{
1461#if EV_USE_PORT 2423#if EV_USE_PORT
1462 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2424 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463#endif 2425#endif
… …
1469#endif 2431#endif
1470#if EV_USE_INOTIFY 2432#if EV_USE_INOTIFY
1471 infy_fork (EV_A); 2433 infy_fork (EV_A);
1472#endif 2434#endif
1473 2435
1474 if (ev_is_active (&pipeev)) 2436 if (ev_is_active (&pipe_w))
1475 { 2437 {
1476 /* this "locks" the handlers against writing to the pipe */ 2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1477 /* while we modify the fd vars */
1478 gotsig = 1;
1479#if EV_ASYNC_ENABLE
1480 gotasync = 1;
1481#endif
1482 2439
1483 ev_ref (EV_A); 2440 ev_ref (EV_A);
1484 ev_io_stop (EV_A_ &pipeev); 2441 ev_io_stop (EV_A_ &pipe_w);
1485 2442
1486#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
1487 if (evfd >= 0) 2444 if (evfd >= 0)
1488 close (evfd); 2445 close (evfd);
1489#endif 2446#endif
1490 2447
1491 if (evpipe [0] >= 0) 2448 if (evpipe [0] >= 0)
1492 { 2449 {
1493 close (evpipe [0]); 2450 EV_WIN32_CLOSE_FD (evpipe [0]);
1494 close (evpipe [1]); 2451 EV_WIN32_CLOSE_FD (evpipe [1]);
1495 } 2452 }
1496 2453
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1497 evpipe_init (EV_A); 2455 evpipe_init (EV_A);
1498 /* now iterate over everything, in case we missed something */ 2456 /* now iterate over everything, in case we missed something */
1499 pipecb (EV_A_ &pipeev, EV_READ); 2457 pipecb (EV_A_ &pipe_w, EV_READ);
2458#endif
1500 } 2459 }
1501 2460
1502 postfork = 0; 2461 postfork = 0;
1503} 2462}
1504 2463
1505#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1506 2465
1507struct ev_loop * 2466struct ev_loop * ecb_cold
1508ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1509{ 2468{
1510 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1511 2470
1512 memset (loop, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1513
1514 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1515 2473
1516 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1517 return loop; 2475 return EV_A;
1518 2476
2477 ev_free (EV_A);
1519 return 0; 2478 return 0;
1520} 2479}
1521 2480
1522void 2481#endif /* multiplicity */
1523ev_loop_destroy (EV_P)
1524{
1525 loop_destroy (EV_A);
1526 ev_free (loop);
1527}
1528
1529void
1530ev_loop_fork (EV_P)
1531{
1532 postfork = 1; /* must be in line with ev_default_fork */
1533}
1534 2482
1535#if EV_VERIFY 2483#if EV_VERIFY
1536static void noinline 2484static void noinline ecb_cold
1537verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1538{ 2486{
1539 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540 2488
1541 if (w->pending) 2489 if (w->pending)
1542 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543} 2491}
1544 2492
1545static void noinline 2493static void noinline ecb_cold
1546verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1547{ 2495{
1548 int i; 2496 int i;
1549 2497
1550 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
1551 { 2499 {
1552 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2500 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1553 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2501 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1554 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2502 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555 2503
1556 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557 } 2505 }
1558} 2506}
1559 2507
1560static void noinline 2508static void noinline ecb_cold
1561array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1562{ 2510{
1563 while (cnt--) 2511 while (cnt--)
1564 { 2512 {
1565 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566 verify_watcher (EV_A_ ws [cnt]); 2514 verify_watcher (EV_A_ ws [cnt]);
1567 } 2515 }
1568} 2516}
1569#endif 2517#endif
1570 2518
1571void 2519#if EV_FEATURE_API
2520void ecb_cold
1572ev_loop_verify (EV_P) 2521ev_verify (EV_P)
1573{ 2522{
1574#if EV_VERIFY 2523#if EV_VERIFY
1575 int i; 2524 int i;
1576 WL w; 2525 WL w;
1577 2526
1578 assert (activecnt >= -1); 2527 assert (activecnt >= -1);
1579 2528
1580 assert (fdchangemax >= fdchangecnt); 2529 assert (fdchangemax >= fdchangecnt);
1581 for (i = 0; i < fdchangecnt; ++i) 2530 for (i = 0; i < fdchangecnt; ++i)
1582 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2531 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583 2532
1584 assert (anfdmax >= 0); 2533 assert (anfdmax >= 0);
1585 for (i = 0; i < anfdmax; ++i) 2534 for (i = 0; i < anfdmax; ++i)
1586 for (w = anfds [i].head; w; w = w->next) 2535 for (w = anfds [i].head; w; w = w->next)
1587 { 2536 {
1588 verify_watcher (EV_A_ (W)w); 2537 verify_watcher (EV_A_ (W)w);
1589 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2538 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1590 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2539 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591 } 2540 }
1592 2541
1593 assert (timermax >= timercnt); 2542 assert (timermax >= timercnt);
1594 verify_heap (EV_A_ timers, timercnt); 2543 verify_heap (EV_A_ timers, timercnt);
1595 2544
… …
1611#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1612 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1613 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1614#endif 2563#endif
1615 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1616#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1617 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1618 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1619#endif 2573#endif
1620 2574
2575#if EV_PREPARE_ENABLE
1621 assert (preparemax >= preparecnt); 2576 assert (preparemax >= preparecnt);
1622 array_verify (EV_A_ (W *)prepares, preparecnt); 2577 array_verify (EV_A_ (W *)prepares, preparecnt);
2578#endif
1623 2579
2580#if EV_CHECK_ENABLE
1624 assert (checkmax >= checkcnt); 2581 assert (checkmax >= checkcnt);
1625 array_verify (EV_A_ (W *)checks, checkcnt); 2582 array_verify (EV_A_ (W *)checks, checkcnt);
2583#endif
1626 2584
1627# if 0 2585# if 0
2586#if EV_CHILD_ENABLE
1628 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2587 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1629 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2588 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2589#endif
1630# endif 2590# endif
1631#endif 2591#endif
1632} 2592}
1633 2593#endif
1634#endif /* multiplicity */
1635 2594
1636#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1637struct ev_loop * 2596struct ev_loop * ecb_cold
1638ev_default_loop_init (unsigned int flags)
1639#else 2597#else
1640int 2598int
2599#endif
1641ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1642#endif
1643{ 2601{
1644 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1645 { 2603 {
1646#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1647 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
1648#else 2606#else
1649 ev_default_loop_ptr = 1; 2607 ev_default_loop_ptr = 1;
1650#endif 2608#endif
1651 2609
1652 loop_init (EV_A_ flags); 2610 loop_init (EV_A_ flags);
1653 2611
1654 if (ev_backend (EV_A)) 2612 if (ev_backend (EV_A))
1655 { 2613 {
1656#ifndef _WIN32 2614#if EV_CHILD_ENABLE
1657 ev_signal_init (&childev, childcb, SIGCHLD); 2615 ev_signal_init (&childev, childcb, SIGCHLD);
1658 ev_set_priority (&childev, EV_MAXPRI); 2616 ev_set_priority (&childev, EV_MAXPRI);
1659 ev_signal_start (EV_A_ &childev); 2617 ev_signal_start (EV_A_ &childev);
1660 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2618 ev_unref (EV_A); /* child watcher should not keep loop alive */
1661#endif 2619#endif
… …
1666 2624
1667 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1668} 2626}
1669 2627
1670void 2628void
1671ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1672{ 2630{
1673#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr;
1675#endif
1676
1677 ev_default_loop_ptr = 0;
1678
1679#ifndef _WIN32
1680 ev_ref (EV_A); /* child watcher */
1681 ev_signal_stop (EV_A_ &childev);
1682#endif
1683
1684 loop_destroy (EV_A);
1685}
1686
1687void
1688ev_default_fork (void)
1689{
1690#if EV_MULTIPLICITY
1691 struct ev_loop *loop = ev_default_loop_ptr;
1692#endif
1693
1694 postfork = 1; /* must be in line with ev_loop_fork */ 2631 postfork = 1; /* must be in line with ev_default_fork */
1695} 2632}
1696 2633
1697/*****************************************************************************/ 2634/*****************************************************************************/
1698 2635
1699void 2636void
1700ev_invoke (EV_P_ void *w, int revents) 2637ev_invoke (EV_P_ void *w, int revents)
1701{ 2638{
1702 EV_CB_INVOKE ((W)w, revents); 2639 EV_CB_INVOKE ((W)w, revents);
1703} 2640}
1704 2641
1705void inline_speed 2642unsigned int
1706call_pending (EV_P) 2643ev_pending_count (EV_P)
2644{
2645 int pri;
2646 unsigned int count = 0;
2647
2648 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri];
2650
2651 return count;
2652}
2653
2654void noinline
2655ev_invoke_pending (EV_P)
1707{ 2656{
1708 int pri; 2657 int pri;
1709 2658
1710 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
1711 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
1712 { 2661 {
1713 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714 2663
1715 if (expect_true (p->w))
1716 {
1717 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1718
1719 p->w->pending = 0; 2664 p->w->pending = 0;
1720 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
1721 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
1722 }
1723 } 2667 }
1724} 2668}
1725 2669
1726#if EV_IDLE_ENABLE 2670#if EV_IDLE_ENABLE
1727void inline_size 2671/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */
2673inline_size void
1728idle_reify (EV_P) 2674idle_reify (EV_P)
1729{ 2675{
1730 if (expect_false (idleall)) 2676 if (expect_false (idleall))
1731 { 2677 {
1732 int pri; 2678 int pri;
… …
1744 } 2690 }
1745 } 2691 }
1746} 2692}
1747#endif 2693#endif
1748 2694
1749void inline_size 2695/* make timers pending */
2696inline_size void
1750timers_reify (EV_P) 2697timers_reify (EV_P)
1751{ 2698{
1752 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1753 2700
1754 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2701 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755 { 2702 {
1756 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2703 do
1757
1758 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760 /* first reschedule or stop timer */
1761 if (w->repeat)
1762 { 2704 {
2705 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2706
2707 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2708
2709 /* first reschedule or stop timer */
2710 if (w->repeat)
2711 {
1763 ev_at (w) += w->repeat; 2712 ev_at (w) += w->repeat;
1764 if (ev_at (w) < mn_now) 2713 if (ev_at (w) < mn_now)
1765 ev_at (w) = mn_now; 2714 ev_at (w) = mn_now;
1766 2715
1767 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2716 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768 2717
1769 ANHE_at_cache (timers [HEAP0]); 2718 ANHE_at_cache (timers [HEAP0]);
1770 downheap (timers, timercnt, HEAP0); 2719 downheap (timers, timercnt, HEAP0);
2720 }
2721 else
2722 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2723
2724 EV_FREQUENT_CHECK;
2725 feed_reverse (EV_A_ (W)w);
1771 } 2726 }
1772 else 2727 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774 2728
1775 EV_FREQUENT_CHECK; 2729 feed_reverse_done (EV_A_ EV_TIMER);
1776 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1777 } 2730 }
1778} 2731}
1779 2732
1780#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
1781void inline_size 2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
2759/* make periodics pending */
2760inline_size void
1782periodics_reify (EV_P) 2761periodics_reify (EV_P)
1783{ 2762{
1784 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
1785 2764
1786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787 { 2766 {
1788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2767 int feed_count = 0;
1789 2768
1790 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2769 do
1791
1792 /* first reschedule or stop timer */
1793 if (w->reschedule_cb)
1794 { 2770 {
2771 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2772
2773 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2774
2775 /* first reschedule or stop timer */
2776 if (w->reschedule_cb)
2777 {
1795 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2778 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796 2779
1797 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2780 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798 2781
1799 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
1800 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
2784 }
2785 else if (w->interval)
2786 {
2787 periodic_recalc (EV_A_ w);
2788 ANHE_at_cache (periodics [HEAP0]);
2789 downheap (periodics, periodiccnt, HEAP0);
2790 }
2791 else
2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2793
2794 EV_FREQUENT_CHECK;
2795 feed_reverse (EV_A_ (W)w);
1801 } 2796 }
1802 else if (w->interval) 2797 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1803 {
1804 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805 /* if next trigger time is not sufficiently in the future, put it there */
1806 /* this might happen because of floating point inexactness */
1807 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808 {
1809 ev_at (w) += w->interval;
1810 2798
1811 /* if interval is unreasonably low we might still have a time in the past */
1812 /* so correct this. this will make the periodic very inexact, but the user */
1813 /* has effectively asked to get triggered more often than possible */
1814 if (ev_at (w) < ev_rt_now)
1815 ev_at (w) = ev_rt_now;
1816 }
1817
1818 ANHE_at_cache (periodics [HEAP0]);
1819 downheap (periodics, periodiccnt, HEAP0);
1820 }
1821 else
1822 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824 EV_FREQUENT_CHECK;
1825 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
1826 } 2800 }
1827} 2801}
1828 2802
2803/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
1829static void noinline 2805static void noinline ecb_cold
1830periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
1831{ 2807{
1832 int i; 2808 int i;
1833 2809
1834 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
1837 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1838 2814
1839 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
1840 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1841 else if (w->interval) 2817 else if (w->interval)
1842 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
1843 2819
1844 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
1845 } 2821 }
1846 2822
1847 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
1848} 2824}
1849#endif 2825#endif
1850 2826
1851void inline_speed 2827/* adjust all timers by a given offset */
2828static void noinline ecb_cold
2829timers_reschedule (EV_P_ ev_tstamp adjust)
2830{
2831 int i;
2832
2833 for (i = 0; i < timercnt; ++i)
2834 {
2835 ANHE *he = timers + i + HEAP0;
2836 ANHE_w (*he)->at += adjust;
2837 ANHE_at_cache (*he);
2838 }
2839}
2840
2841/* fetch new monotonic and realtime times from the kernel */
2842/* also detect if there was a timejump, and act accordingly */
2843inline_speed void
1852time_update (EV_P_ ev_tstamp max_block) 2844time_update (EV_P_ ev_tstamp max_block)
1853{ 2845{
1854 int i;
1855
1856#if EV_USE_MONOTONIC 2846#if EV_USE_MONOTONIC
1857 if (expect_true (have_monotonic)) 2847 if (expect_true (have_monotonic))
1858 { 2848 {
2849 int i;
1859 ev_tstamp odiff = rtmn_diff; 2850 ev_tstamp odiff = rtmn_diff;
1860 2851
1861 mn_now = get_clock (); 2852 mn_now = get_clock ();
1862 2853
1863 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2854 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1879 * doesn't hurt either as we only do this on time-jumps or 2870 * doesn't hurt either as we only do this on time-jumps or
1880 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
1881 */ 2872 */
1882 for (i = 4; --i; ) 2873 for (i = 4; --i; )
1883 { 2874 {
2875 ev_tstamp diff;
1884 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
1885 2877
2878 diff = odiff - rtmn_diff;
2879
1886 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1887 return; /* all is well */ 2881 return; /* all is well */
1888 2882
1889 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
1890 mn_now = get_clock (); 2884 mn_now = get_clock ();
1891 now_floor = mn_now; 2885 now_floor = mn_now;
1892 } 2886 }
1893 2887
2888 /* no timer adjustment, as the monotonic clock doesn't jump */
2889 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894# if EV_PERIODIC_ENABLE 2890# if EV_PERIODIC_ENABLE
1895 periodics_reschedule (EV_A); 2891 periodics_reschedule (EV_A);
1896# endif 2892# endif
1897 /* no timer adjustment, as the monotonic clock doesn't jump */
1898 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899 } 2893 }
1900 else 2894 else
1901#endif 2895#endif
1902 { 2896 {
1903 ev_rt_now = ev_time (); 2897 ev_rt_now = ev_time ();
1904 2898
1905 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2899 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1906 { 2900 {
2901 /* adjust timers. this is easy, as the offset is the same for all of them */
2902 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1907#if EV_PERIODIC_ENABLE 2903#if EV_PERIODIC_ENABLE
1908 periodics_reschedule (EV_A); 2904 periodics_reschedule (EV_A);
1909#endif 2905#endif
1910 /* adjust timers. this is easy, as the offset is the same for all of them */
1911 for (i = 0; i < timercnt; ++i)
1912 {
1913 ANHE *he = timers + i + HEAP0;
1914 ANHE_w (*he)->at += ev_rt_now - mn_now;
1915 ANHE_at_cache (*he);
1916 }
1917 } 2906 }
1918 2907
1919 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
1920 } 2909 }
1921} 2910}
1922 2911
1923void 2912void
1924ev_ref (EV_P)
1925{
1926 ++activecnt;
1927}
1928
1929void
1930ev_unref (EV_P)
1931{
1932 --activecnt;
1933}
1934
1935void
1936ev_now_update (EV_P)
1937{
1938 time_update (EV_A_ 1e100);
1939}
1940
1941static int loop_done;
1942
1943void
1944ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
1945{ 2914{
2915#if EV_FEATURE_API
2916 ++loop_depth;
2917#endif
2918
2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2920
1946 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
1947 2922
1948 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1949 2924
1950 do 2925 do
1951 { 2926 {
1952#if EV_VERIFY >= 2 2927#if EV_VERIFY >= 2
1953 ev_loop_verify (EV_A); 2928 ev_verify (EV_A);
1954#endif 2929#endif
1955 2930
1956#ifndef _WIN32 2931#ifndef _WIN32
1957 if (expect_false (curpid)) /* penalise the forking check even more */ 2932 if (expect_false (curpid)) /* penalise the forking check even more */
1958 if (expect_false (getpid () != curpid)) 2933 if (expect_false (getpid () != curpid))
… …
1966 /* we might have forked, so queue fork handlers */ 2941 /* we might have forked, so queue fork handlers */
1967 if (expect_false (postfork)) 2942 if (expect_false (postfork))
1968 if (forkcnt) 2943 if (forkcnt)
1969 { 2944 {
1970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971 call_pending (EV_A); 2946 EV_INVOKE_PENDING;
1972 } 2947 }
1973#endif 2948#endif
1974 2949
2950#if EV_PREPARE_ENABLE
1975 /* queue prepare watchers (and execute them) */ 2951 /* queue prepare watchers (and execute them) */
1976 if (expect_false (preparecnt)) 2952 if (expect_false (preparecnt))
1977 { 2953 {
1978 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979 call_pending (EV_A); 2955 EV_INVOKE_PENDING;
1980 } 2956 }
2957#endif
1981 2958
1982 if (expect_false (!activecnt)) 2959 if (expect_false (loop_done))
1983 break; 2960 break;
1984 2961
1985 /* we might have forked, so reify kernel state if necessary */ 2962 /* we might have forked, so reify kernel state if necessary */
1986 if (expect_false (postfork)) 2963 if (expect_false (postfork))
1987 loop_fork (EV_A); 2964 loop_fork (EV_A);
… …
1992 /* calculate blocking time */ 2969 /* calculate blocking time */
1993 { 2970 {
1994 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
1995 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
1996 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
1997 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1998 { 2986 {
1999 /* update time to cancel out callback processing overhead */
2000 time_update (EV_A_ 1e100);
2001
2002 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2003 2988
2004 if (timercnt) 2989 if (timercnt)
2005 { 2990 {
2006 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2007 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2008 } 2993 }
2009 2994
2010#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2011 if (periodiccnt) 2996 if (periodiccnt)
2012 { 2997 {
2013 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2014 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2015 } 3000 }
2016#endif 3001#endif
2017 3002
3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2018 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2019 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
2020 3006
2021 sleeptime = waittime - backend_fudge; 3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2022 3011
3012 /* extra check because io_blocktime is commonly 0 */
2023 if (expect_true (sleeptime > io_blocktime)) 3013 if (expect_false (io_blocktime))
2024 sleeptime = io_blocktime;
2025
2026 if (sleeptime)
2027 { 3014 {
3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3016
3017 if (sleeptime > waittime - backend_mintime)
3018 sleeptime = waittime - backend_mintime;
3019
3020 if (expect_true (sleeptime > 0.))
3021 {
2028 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2029 waittime -= sleeptime; 3023 waittime -= sleeptime;
3024 }
2030 } 3025 }
2031 } 3026 }
2032 3027
3028#if EV_FEATURE_API
2033 ++loop_count; 3029 ++loop_count;
3030#endif
3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2034 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2035 3043
2036 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2037 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2038 } 3046 }
2039 3047
… …
2046#if EV_IDLE_ENABLE 3054#if EV_IDLE_ENABLE
2047 /* queue idle watchers unless other events are pending */ 3055 /* queue idle watchers unless other events are pending */
2048 idle_reify (EV_A); 3056 idle_reify (EV_A);
2049#endif 3057#endif
2050 3058
3059#if EV_CHECK_ENABLE
2051 /* queue check watchers, to be executed first */ 3060 /* queue check watchers, to be executed first */
2052 if (expect_false (checkcnt)) 3061 if (expect_false (checkcnt))
2053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif
2054 3064
2055 call_pending (EV_A); 3065 EV_INVOKE_PENDING;
2056 } 3066 }
2057 while (expect_true ( 3067 while (expect_true (
2058 activecnt 3068 activecnt
2059 && !loop_done 3069 && !loop_done
2060 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2061 )); 3071 ));
2062 3072
2063 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2064 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
3075
3076#if EV_FEATURE_API
3077 --loop_depth;
3078#endif
2065} 3079}
2066 3080
2067void 3081void
2068ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2069{ 3083{
2070 loop_done = how; 3084 loop_done = how;
2071} 3085}
2072 3086
3087void
3088ev_ref (EV_P)
3089{
3090 ++activecnt;
3091}
3092
3093void
3094ev_unref (EV_P)
3095{
3096 --activecnt;
3097}
3098
3099void
3100ev_now_update (EV_P)
3101{
3102 time_update (EV_A_ 1e100);
3103}
3104
3105void
3106ev_suspend (EV_P)
3107{
3108 ev_now_update (EV_A);
3109}
3110
3111void
3112ev_resume (EV_P)
3113{
3114 ev_tstamp mn_prev = mn_now;
3115
3116 ev_now_update (EV_A);
3117 timers_reschedule (EV_A_ mn_now - mn_prev);
3118#if EV_PERIODIC_ENABLE
3119 /* TODO: really do this? */
3120 periodics_reschedule (EV_A);
3121#endif
3122}
3123
2073/*****************************************************************************/ 3124/*****************************************************************************/
3125/* singly-linked list management, used when the expected list length is short */
2074 3126
2075void inline_size 3127inline_size void
2076wlist_add (WL *head, WL elem) 3128wlist_add (WL *head, WL elem)
2077{ 3129{
2078 elem->next = *head; 3130 elem->next = *head;
2079 *head = elem; 3131 *head = elem;
2080} 3132}
2081 3133
2082void inline_size 3134inline_size void
2083wlist_del (WL *head, WL elem) 3135wlist_del (WL *head, WL elem)
2084{ 3136{
2085 while (*head) 3137 while (*head)
2086 { 3138 {
2087 if (*head == elem) 3139 if (expect_true (*head == elem))
2088 { 3140 {
2089 *head = elem->next; 3141 *head = elem->next;
2090 return; 3142 break;
2091 } 3143 }
2092 3144
2093 head = &(*head)->next; 3145 head = &(*head)->next;
2094 } 3146 }
2095} 3147}
2096 3148
2097void inline_speed 3149/* internal, faster, version of ev_clear_pending */
3150inline_speed void
2098clear_pending (EV_P_ W w) 3151clear_pending (EV_P_ W w)
2099{ 3152{
2100 if (w->pending) 3153 if (w->pending)
2101 { 3154 {
2102 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3155 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103 w->pending = 0; 3156 w->pending = 0;
2104 } 3157 }
2105} 3158}
2106 3159
2107int 3160int
… …
2111 int pending = w_->pending; 3164 int pending = w_->pending;
2112 3165
2113 if (expect_true (pending)) 3166 if (expect_true (pending))
2114 { 3167 {
2115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3168 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3169 p->w = (W)&pending_w;
2116 w_->pending = 0; 3170 w_->pending = 0;
2117 p->w = 0;
2118 return p->events; 3171 return p->events;
2119 } 3172 }
2120 else 3173 else
2121 return 0; 3174 return 0;
2122} 3175}
2123 3176
2124void inline_size 3177inline_size void
2125pri_adjust (EV_P_ W w) 3178pri_adjust (EV_P_ W w)
2126{ 3179{
2127 int pri = w->priority; 3180 int pri = ev_priority (w);
2128 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3181 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3182 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130 w->priority = pri; 3183 ev_set_priority (w, pri);
2131} 3184}
2132 3185
2133void inline_speed 3186inline_speed void
2134ev_start (EV_P_ W w, int active) 3187ev_start (EV_P_ W w, int active)
2135{ 3188{
2136 pri_adjust (EV_A_ w); 3189 pri_adjust (EV_A_ w);
2137 w->active = active; 3190 w->active = active;
2138 ev_ref (EV_A); 3191 ev_ref (EV_A);
2139} 3192}
2140 3193
2141void inline_size 3194inline_size void
2142ev_stop (EV_P_ W w) 3195ev_stop (EV_P_ W w)
2143{ 3196{
2144 ev_unref (EV_A); 3197 ev_unref (EV_A);
2145 w->active = 0; 3198 w->active = 0;
2146} 3199}
… …
2153 int fd = w->fd; 3206 int fd = w->fd;
2154 3207
2155 if (expect_false (ev_is_active (w))) 3208 if (expect_false (ev_is_active (w)))
2156 return; 3209 return;
2157 3210
2158 assert (("ev_io_start called with negative fd", fd >= 0)); 3211 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2159 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160 3213
2161 EV_FREQUENT_CHECK; 3214 EV_FREQUENT_CHECK;
2162 3215
2163 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
2164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165 wlist_add (&anfds[fd].head, (WL)w); 3218 wlist_add (&anfds[fd].head, (WL)w);
2166 3219
2167 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2168 w->events &= ~EV_IOFDSET; 3221 w->events &= ~EV__IOFDSET;
2169 3222
2170 EV_FREQUENT_CHECK; 3223 EV_FREQUENT_CHECK;
2171} 3224}
2172 3225
2173void noinline 3226void noinline
… …
2175{ 3228{
2176 clear_pending (EV_A_ (W)w); 3229 clear_pending (EV_A_ (W)w);
2177 if (expect_false (!ev_is_active (w))) 3230 if (expect_false (!ev_is_active (w)))
2178 return; 3231 return;
2179 3232
2180 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3233 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2181 3234
2182 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2183 3236
2184 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2186 3239
2187 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2188 3241
2189 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2190} 3243}
2191 3244
2192void noinline 3245void noinline
… …
2195 if (expect_false (ev_is_active (w))) 3248 if (expect_false (ev_is_active (w)))
2196 return; 3249 return;
2197 3250
2198 ev_at (w) += mn_now; 3251 ev_at (w) += mn_now;
2199 3252
2200 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3253 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2201 3254
2202 EV_FREQUENT_CHECK; 3255 EV_FREQUENT_CHECK;
2203 3256
2204 ++timercnt; 3257 ++timercnt;
2205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3258 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2208 ANHE_at_cache (timers [ev_active (w)]); 3261 ANHE_at_cache (timers [ev_active (w)]);
2209 upheap (timers, ev_active (w)); 3262 upheap (timers, ev_active (w));
2210 3263
2211 EV_FREQUENT_CHECK; 3264 EV_FREQUENT_CHECK;
2212 3265
2213 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3266 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214} 3267}
2215 3268
2216void noinline 3269void noinline
2217ev_timer_stop (EV_P_ ev_timer *w) 3270ev_timer_stop (EV_P_ ev_timer *w)
2218{ 3271{
… …
2223 EV_FREQUENT_CHECK; 3276 EV_FREQUENT_CHECK;
2224 3277
2225 { 3278 {
2226 int active = ev_active (w); 3279 int active = ev_active (w);
2227 3280
2228 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3281 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229 3282
2230 --timercnt; 3283 --timercnt;
2231 3284
2232 if (expect_true (active < timercnt + HEAP0)) 3285 if (expect_true (active < timercnt + HEAP0))
2233 { 3286 {
2234 timers [active] = timers [timercnt + HEAP0]; 3287 timers [active] = timers [timercnt + HEAP0];
2235 adjustheap (timers, timercnt, active); 3288 adjustheap (timers, timercnt, active);
2236 } 3289 }
2237 } 3290 }
2238 3291
2239 EV_FREQUENT_CHECK;
2240
2241 ev_at (w) -= mn_now; 3292 ev_at (w) -= mn_now;
2242 3293
2243 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
3295
3296 EV_FREQUENT_CHECK;
2244} 3297}
2245 3298
2246void noinline 3299void noinline
2247ev_timer_again (EV_P_ ev_timer *w) 3300ev_timer_again (EV_P_ ev_timer *w)
2248{ 3301{
2249 EV_FREQUENT_CHECK; 3302 EV_FREQUENT_CHECK;
3303
3304 clear_pending (EV_A_ (W)w);
2250 3305
2251 if (ev_is_active (w)) 3306 if (ev_is_active (w))
2252 { 3307 {
2253 if (w->repeat) 3308 if (w->repeat)
2254 { 3309 {
… …
2266 } 3321 }
2267 3322
2268 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2269} 3324}
2270 3325
3326ev_tstamp
3327ev_timer_remaining (EV_P_ ev_timer *w)
3328{
3329 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3330}
3331
2271#if EV_PERIODIC_ENABLE 3332#if EV_PERIODIC_ENABLE
2272void noinline 3333void noinline
2273ev_periodic_start (EV_P_ ev_periodic *w) 3334ev_periodic_start (EV_P_ ev_periodic *w)
2274{ 3335{
2275 if (expect_false (ev_is_active (w))) 3336 if (expect_false (ev_is_active (w)))
… …
2277 3338
2278 if (w->reschedule_cb) 3339 if (w->reschedule_cb)
2279 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3340 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280 else if (w->interval) 3341 else if (w->interval)
2281 { 3342 {
2282 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3343 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2283 /* this formula differs from the one in periodic_reify because we do not always round up */ 3344 periodic_recalc (EV_A_ w);
2284 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2285 } 3345 }
2286 else 3346 else
2287 ev_at (w) = w->offset; 3347 ev_at (w) = w->offset;
2288 3348
2289 EV_FREQUENT_CHECK; 3349 EV_FREQUENT_CHECK;
… …
2295 ANHE_at_cache (periodics [ev_active (w)]); 3355 ANHE_at_cache (periodics [ev_active (w)]);
2296 upheap (periodics, ev_active (w)); 3356 upheap (periodics, ev_active (w));
2297 3357
2298 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2299 3359
2300 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3360 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2301} 3361}
2302 3362
2303void noinline 3363void noinline
2304ev_periodic_stop (EV_P_ ev_periodic *w) 3364ev_periodic_stop (EV_P_ ev_periodic *w)
2305{ 3365{
… …
2310 EV_FREQUENT_CHECK; 3370 EV_FREQUENT_CHECK;
2311 3371
2312 { 3372 {
2313 int active = ev_active (w); 3373 int active = ev_active (w);
2314 3374
2315 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3375 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316 3376
2317 --periodiccnt; 3377 --periodiccnt;
2318 3378
2319 if (expect_true (active < periodiccnt + HEAP0)) 3379 if (expect_true (active < periodiccnt + HEAP0))
2320 { 3380 {
2321 periodics [active] = periodics [periodiccnt + HEAP0]; 3381 periodics [active] = periodics [periodiccnt + HEAP0];
2322 adjustheap (periodics, periodiccnt, active); 3382 adjustheap (periodics, periodiccnt, active);
2323 } 3383 }
2324 } 3384 }
2325 3385
2326 EV_FREQUENT_CHECK;
2327
2328 ev_stop (EV_A_ (W)w); 3386 ev_stop (EV_A_ (W)w);
3387
3388 EV_FREQUENT_CHECK;
2329} 3389}
2330 3390
2331void noinline 3391void noinline
2332ev_periodic_again (EV_P_ ev_periodic *w) 3392ev_periodic_again (EV_P_ ev_periodic *w)
2333{ 3393{
… …
2339 3399
2340#ifndef SA_RESTART 3400#ifndef SA_RESTART
2341# define SA_RESTART 0 3401# define SA_RESTART 0
2342#endif 3402#endif
2343 3403
3404#if EV_SIGNAL_ENABLE
3405
2344void noinline 3406void noinline
2345ev_signal_start (EV_P_ ev_signal *w) 3407ev_signal_start (EV_P_ ev_signal *w)
2346{ 3408{
2347#if EV_MULTIPLICITY
2348 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349#endif
2350 if (expect_false (ev_is_active (w))) 3409 if (expect_false (ev_is_active (w)))
2351 return; 3410 return;
2352 3411
2353 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3412 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2354 3413
2355 evpipe_init (EV_A); 3414#if EV_MULTIPLICITY
3415 assert (("libev: a signal must not be attached to two different loops",
3416 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2356 3417
2357 EV_FREQUENT_CHECK; 3418 signals [w->signum - 1].loop = EV_A;
3419#endif
2358 3420
3421 EV_FREQUENT_CHECK;
3422
3423#if EV_USE_SIGNALFD
3424 if (sigfd == -2)
2359 { 3425 {
2360#ifndef _WIN32 3426 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2361 sigset_t full, prev; 3427 if (sigfd < 0 && errno == EINVAL)
2362 sigfillset (&full); 3428 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2363 sigprocmask (SIG_SETMASK, &full, &prev);
2364#endif
2365 3429
2366 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3430 if (sigfd >= 0)
3431 {
3432 fd_intern (sigfd); /* doing it twice will not hurt */
2367 3433
2368#ifndef _WIN32 3434 sigemptyset (&sigfd_set);
2369 sigprocmask (SIG_SETMASK, &prev, 0); 3435
2370#endif 3436 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3437 ev_set_priority (&sigfd_w, EV_MAXPRI);
3438 ev_io_start (EV_A_ &sigfd_w);
3439 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3440 }
2371 } 3441 }
3442
3443 if (sigfd >= 0)
3444 {
3445 /* TODO: check .head */
3446 sigaddset (&sigfd_set, w->signum);
3447 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3448
3449 signalfd (sigfd, &sigfd_set, 0);
3450 }
3451#endif
2372 3452
2373 ev_start (EV_A_ (W)w, 1); 3453 ev_start (EV_A_ (W)w, 1);
2374 wlist_add (&signals [w->signum - 1].head, (WL)w); 3454 wlist_add (&signals [w->signum - 1].head, (WL)w);
2375 3455
2376 if (!((WL)w)->next) 3456 if (!((WL)w)->next)
3457# if EV_USE_SIGNALFD
3458 if (sigfd < 0) /*TODO*/
3459# endif
2377 { 3460 {
2378#if _WIN32 3461# ifdef _WIN32
3462 evpipe_init (EV_A);
3463
2379 signal (w->signum, ev_sighandler); 3464 signal (w->signum, ev_sighandler);
2380#else 3465# else
2381 struct sigaction sa; 3466 struct sigaction sa;
3467
3468 evpipe_init (EV_A);
3469
2382 sa.sa_handler = ev_sighandler; 3470 sa.sa_handler = ev_sighandler;
2383 sigfillset (&sa.sa_mask); 3471 sigfillset (&sa.sa_mask);
2384 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3472 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2385 sigaction (w->signum, &sa, 0); 3473 sigaction (w->signum, &sa, 0);
3474
3475 if (origflags & EVFLAG_NOSIGMASK)
3476 {
3477 sigemptyset (&sa.sa_mask);
3478 sigaddset (&sa.sa_mask, w->signum);
3479 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3480 }
2386#endif 3481#endif
2387 } 3482 }
2388 3483
2389 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2390} 3485}
2391 3486
2392void noinline 3487void noinline
… …
2400 3495
2401 wlist_del (&signals [w->signum - 1].head, (WL)w); 3496 wlist_del (&signals [w->signum - 1].head, (WL)w);
2402 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
2403 3498
2404 if (!signals [w->signum - 1].head) 3499 if (!signals [w->signum - 1].head)
3500 {
3501#if EV_MULTIPLICITY
3502 signals [w->signum - 1].loop = 0; /* unattach from signal */
3503#endif
3504#if EV_USE_SIGNALFD
3505 if (sigfd >= 0)
3506 {
3507 sigset_t ss;
3508
3509 sigemptyset (&ss);
3510 sigaddset (&ss, w->signum);
3511 sigdelset (&sigfd_set, w->signum);
3512
3513 signalfd (sigfd, &sigfd_set, 0);
3514 sigprocmask (SIG_UNBLOCK, &ss, 0);
3515 }
3516 else
3517#endif
2405 signal (w->signum, SIG_DFL); 3518 signal (w->signum, SIG_DFL);
3519 }
2406 3520
2407 EV_FREQUENT_CHECK; 3521 EV_FREQUENT_CHECK;
2408} 3522}
3523
3524#endif
3525
3526#if EV_CHILD_ENABLE
2409 3527
2410void 3528void
2411ev_child_start (EV_P_ ev_child *w) 3529ev_child_start (EV_P_ ev_child *w)
2412{ 3530{
2413#if EV_MULTIPLICITY 3531#if EV_MULTIPLICITY
2414 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2415#endif 3533#endif
2416 if (expect_false (ev_is_active (w))) 3534 if (expect_false (ev_is_active (w)))
2417 return; 3535 return;
2418 3536
2419 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2420 3538
2421 ev_start (EV_A_ (W)w, 1); 3539 ev_start (EV_A_ (W)w, 1);
2422 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3540 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2423 3541
2424 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2425} 3543}
2426 3544
2427void 3545void
… …
2431 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2432 return; 3550 return;
2433 3551
2434 EV_FREQUENT_CHECK; 3552 EV_FREQUENT_CHECK;
2435 3553
2436 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3554 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2437 ev_stop (EV_A_ (W)w); 3555 ev_stop (EV_A_ (W)w);
2438 3556
2439 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2440} 3558}
3559
3560#endif
2441 3561
2442#if EV_STAT_ENABLE 3562#if EV_STAT_ENABLE
2443 3563
2444# ifdef _WIN32 3564# ifdef _WIN32
2445# undef lstat 3565# undef lstat
… …
2451#define MIN_STAT_INTERVAL 0.1074891 3571#define MIN_STAT_INTERVAL 0.1074891
2452 3572
2453static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2454 3574
2455#if EV_USE_INOTIFY 3575#if EV_USE_INOTIFY
2456# define EV_INOTIFY_BUFSIZE 8192 3576
3577/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3578# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2457 3579
2458static void noinline 3580static void noinline
2459infy_add (EV_P_ ev_stat *w) 3581infy_add (EV_P_ ev_stat *w)
2460{ 3582{
2461 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); 3583 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);
2462 3584
2463 if (w->wd < 0) 3585 if (w->wd >= 0)
3586 {
3587 struct statfs sfs;
3588
3589 /* now local changes will be tracked by inotify, but remote changes won't */
3590 /* unless the filesystem is known to be local, we therefore still poll */
3591 /* also do poll on <2.6.25, but with normal frequency */
3592
3593 if (!fs_2625)
3594 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3595 else if (!statfs (w->path, &sfs)
3596 && (sfs.f_type == 0x1373 /* devfs */
3597 || sfs.f_type == 0xEF53 /* ext2/3 */
3598 || sfs.f_type == 0x3153464a /* jfs */
3599 || sfs.f_type == 0x52654973 /* reiser3 */
3600 || sfs.f_type == 0x01021994 /* tempfs */
3601 || sfs.f_type == 0x58465342 /* xfs */))
3602 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3603 else
3604 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2464 { 3605 }
3606 else
3607 {
3608 /* can't use inotify, continue to stat */
2465 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3609 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2466 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2467 3610
2468 /* monitor some parent directory for speedup hints */ 3611 /* if path is not there, monitor some parent directory for speedup hints */
2469 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3612 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2470 /* but an efficiency issue only */ 3613 /* but an efficiency issue only */
2471 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3614 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2472 { 3615 {
2473 char path [4096]; 3616 char path [4096];
… …
2483 if (!pend || pend == path) 3626 if (!pend || pend == path)
2484 break; 3627 break;
2485 3628
2486 *pend = 0; 3629 *pend = 0;
2487 w->wd = inotify_add_watch (fs_fd, path, mask); 3630 w->wd = inotify_add_watch (fs_fd, path, mask);
2488 } 3631 }
2489 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3632 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2490 } 3633 }
2491 } 3634 }
2492 3635
2493 if (w->wd >= 0) 3636 if (w->wd >= 0)
2494 {
2495 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3637 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2496 3638
2497 /* now local changes will be tracked by inotify, but remote changes won't */ 3639 /* now re-arm timer, if required */
2498 /* unless the filesystem it known to be local, we therefore still poll */ 3640 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2499 /* also do poll on <2.6.25, but with normal frequency */
2500 struct statfs sfs;
2501
2502 if (fs_2625 && !statfs (w->path, &sfs))
2503 if (sfs.f_type == 0x1373 /* devfs */
2504 || sfs.f_type == 0xEF53 /* ext2/3 */
2505 || sfs.f_type == 0x3153464a /* jfs */
2506 || sfs.f_type == 0x52654973 /* reiser3 */
2507 || sfs.f_type == 0x01021994 /* tempfs */
2508 || sfs.f_type == 0x58465342 /* xfs */)
2509 return;
2510
2511 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2512 ev_timer_again (EV_A_ &w->timer); 3641 ev_timer_again (EV_A_ &w->timer);
2513 } 3642 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2514} 3643}
2515 3644
2516static void noinline 3645static void noinline
2517infy_del (EV_P_ ev_stat *w) 3646infy_del (EV_P_ ev_stat *w)
2518{ 3647{
… …
2521 3650
2522 if (wd < 0) 3651 if (wd < 0)
2523 return; 3652 return;
2524 3653
2525 w->wd = -2; 3654 w->wd = -2;
2526 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3655 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2527 wlist_del (&fs_hash [slot].head, (WL)w); 3656 wlist_del (&fs_hash [slot].head, (WL)w);
2528 3657
2529 /* remove this watcher, if others are watching it, they will rearm */ 3658 /* remove this watcher, if others are watching it, they will rearm */
2530 inotify_rm_watch (fs_fd, wd); 3659 inotify_rm_watch (fs_fd, wd);
2531} 3660}
… …
2533static void noinline 3662static void noinline
2534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3663infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2535{ 3664{
2536 if (slot < 0) 3665 if (slot < 0)
2537 /* overflow, need to check for all hash slots */ 3666 /* overflow, need to check for all hash slots */
2538 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3667 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2539 infy_wd (EV_A_ slot, wd, ev); 3668 infy_wd (EV_A_ slot, wd, ev);
2540 else 3669 else
2541 { 3670 {
2542 WL w_; 3671 WL w_;
2543 3672
2544 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3673 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2545 { 3674 {
2546 ev_stat *w = (ev_stat *)w_; 3675 ev_stat *w = (ev_stat *)w_;
2547 w_ = w_->next; /* lets us remove this watcher and all before it */ 3676 w_ = w_->next; /* lets us remove this watcher and all before it */
2548 3677
2549 if (w->wd == wd || wd == -1) 3678 if (w->wd == wd || wd == -1)
2550 { 3679 {
2551 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3680 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2552 { 3681 {
2553 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3682 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2554 w->wd = -1; 3683 w->wd = -1;
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3684 infy_add (EV_A_ w); /* re-add, no matter what */
2556 } 3685 }
2557 3686
2558 stat_timer_cb (EV_A_ &w->timer, 0); 3687 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2563 3692
2564static void 3693static void
2565infy_cb (EV_P_ ev_io *w, int revents) 3694infy_cb (EV_P_ ev_io *w, int revents)
2566{ 3695{
2567 char buf [EV_INOTIFY_BUFSIZE]; 3696 char buf [EV_INOTIFY_BUFSIZE];
2568 struct inotify_event *ev = (struct inotify_event *)buf;
2569 int ofs; 3697 int ofs;
2570 int len = read (fs_fd, buf, sizeof (buf)); 3698 int len = read (fs_fd, buf, sizeof (buf));
2571 3699
2572 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3700 for (ofs = 0; ofs < len; )
3701 {
3702 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2573 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3703 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3704 ofs += sizeof (struct inotify_event) + ev->len;
3705 }
2574} 3706}
2575 3707
2576void inline_size 3708inline_size void ecb_cold
2577check_2625 (EV_P) 3709ev_check_2625 (EV_P)
2578{ 3710{
2579 /* kernels < 2.6.25 are borked 3711 /* kernels < 2.6.25 are borked
2580 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3712 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2581 */ 3713 */
2582 struct utsname buf; 3714 if (ev_linux_version () < 0x020619)
2583 int major, minor, micro;
2584
2585 if (uname (&buf))
2586 return; 3715 return;
2587 3716
2588 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2589 return;
2590
2591 if (major < 2
2592 || (major == 2 && minor < 6)
2593 || (major == 2 && minor == 6 && micro < 25))
2594 return;
2595
2596 fs_2625 = 1; 3717 fs_2625 = 1;
2597} 3718}
2598 3719
2599void inline_size 3720inline_size int
3721infy_newfd (void)
3722{
3723#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3724 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3725 if (fd >= 0)
3726 return fd;
3727#endif
3728 return inotify_init ();
3729}
3730
3731inline_size void
2600infy_init (EV_P) 3732infy_init (EV_P)
2601{ 3733{
2602 if (fs_fd != -2) 3734 if (fs_fd != -2)
2603 return; 3735 return;
2604 3736
2605 fs_fd = -1; 3737 fs_fd = -1;
2606 3738
2607 check_2625 (EV_A); 3739 ev_check_2625 (EV_A);
2608 3740
2609 fs_fd = inotify_init (); 3741 fs_fd = infy_newfd ();
2610 3742
2611 if (fs_fd >= 0) 3743 if (fs_fd >= 0)
2612 { 3744 {
3745 fd_intern (fs_fd);
2613 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3746 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2614 ev_set_priority (&fs_w, EV_MAXPRI); 3747 ev_set_priority (&fs_w, EV_MAXPRI);
2615 ev_io_start (EV_A_ &fs_w); 3748 ev_io_start (EV_A_ &fs_w);
3749 ev_unref (EV_A);
2616 } 3750 }
2617} 3751}
2618 3752
2619void inline_size 3753inline_size void
2620infy_fork (EV_P) 3754infy_fork (EV_P)
2621{ 3755{
2622 int slot; 3756 int slot;
2623 3757
2624 if (fs_fd < 0) 3758 if (fs_fd < 0)
2625 return; 3759 return;
2626 3760
3761 ev_ref (EV_A);
3762 ev_io_stop (EV_A_ &fs_w);
2627 close (fs_fd); 3763 close (fs_fd);
2628 fs_fd = inotify_init (); 3764 fs_fd = infy_newfd ();
2629 3765
3766 if (fs_fd >= 0)
3767 {
3768 fd_intern (fs_fd);
3769 ev_io_set (&fs_w, fs_fd, EV_READ);
3770 ev_io_start (EV_A_ &fs_w);
3771 ev_unref (EV_A);
3772 }
3773
2630 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3774 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2631 { 3775 {
2632 WL w_ = fs_hash [slot].head; 3776 WL w_ = fs_hash [slot].head;
2633 fs_hash [slot].head = 0; 3777 fs_hash [slot].head = 0;
2634 3778
2635 while (w_) 3779 while (w_)
… …
2640 w->wd = -1; 3784 w->wd = -1;
2641 3785
2642 if (fs_fd >= 0) 3786 if (fs_fd >= 0)
2643 infy_add (EV_A_ w); /* re-add, no matter what */ 3787 infy_add (EV_A_ w); /* re-add, no matter what */
2644 else 3788 else
3789 {
3790 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3791 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2645 ev_timer_again (EV_A_ &w->timer); 3792 ev_timer_again (EV_A_ &w->timer);
3793 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3794 }
2646 } 3795 }
2647 } 3796 }
2648} 3797}
2649 3798
2650#endif 3799#endif
… …
2667static void noinline 3816static void noinline
2668stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3817stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2669{ 3818{
2670 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3819 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2671 3820
2672 /* we copy this here each the time so that */ 3821 ev_statdata prev = w->attr;
2673 /* prev has the old value when the callback gets invoked */
2674 w->prev = w->attr;
2675 ev_stat_stat (EV_A_ w); 3822 ev_stat_stat (EV_A_ w);
2676 3823
2677 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3824 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2678 if ( 3825 if (
2679 w->prev.st_dev != w->attr.st_dev 3826 prev.st_dev != w->attr.st_dev
2680 || w->prev.st_ino != w->attr.st_ino 3827 || prev.st_ino != w->attr.st_ino
2681 || w->prev.st_mode != w->attr.st_mode 3828 || prev.st_mode != w->attr.st_mode
2682 || w->prev.st_nlink != w->attr.st_nlink 3829 || prev.st_nlink != w->attr.st_nlink
2683 || w->prev.st_uid != w->attr.st_uid 3830 || prev.st_uid != w->attr.st_uid
2684 || w->prev.st_gid != w->attr.st_gid 3831 || prev.st_gid != w->attr.st_gid
2685 || w->prev.st_rdev != w->attr.st_rdev 3832 || prev.st_rdev != w->attr.st_rdev
2686 || w->prev.st_size != w->attr.st_size 3833 || prev.st_size != w->attr.st_size
2687 || w->prev.st_atime != w->attr.st_atime 3834 || prev.st_atime != w->attr.st_atime
2688 || w->prev.st_mtime != w->attr.st_mtime 3835 || prev.st_mtime != w->attr.st_mtime
2689 || w->prev.st_ctime != w->attr.st_ctime 3836 || prev.st_ctime != w->attr.st_ctime
2690 ) { 3837 ) {
3838 /* we only update w->prev on actual differences */
3839 /* in case we test more often than invoke the callback, */
3840 /* to ensure that prev is always different to attr */
3841 w->prev = prev;
3842
2691 #if EV_USE_INOTIFY 3843 #if EV_USE_INOTIFY
2692 if (fs_fd >= 0) 3844 if (fs_fd >= 0)
2693 { 3845 {
2694 infy_del (EV_A_ w); 3846 infy_del (EV_A_ w);
2695 infy_add (EV_A_ w); 3847 infy_add (EV_A_ w);
… …
2720 3872
2721 if (fs_fd >= 0) 3873 if (fs_fd >= 0)
2722 infy_add (EV_A_ w); 3874 infy_add (EV_A_ w);
2723 else 3875 else
2724#endif 3876#endif
3877 {
2725 ev_timer_again (EV_A_ &w->timer); 3878 ev_timer_again (EV_A_ &w->timer);
3879 ev_unref (EV_A);
3880 }
2726 3881
2727 ev_start (EV_A_ (W)w, 1); 3882 ev_start (EV_A_ (W)w, 1);
2728 3883
2729 EV_FREQUENT_CHECK; 3884 EV_FREQUENT_CHECK;
2730} 3885}
… …
2739 EV_FREQUENT_CHECK; 3894 EV_FREQUENT_CHECK;
2740 3895
2741#if EV_USE_INOTIFY 3896#if EV_USE_INOTIFY
2742 infy_del (EV_A_ w); 3897 infy_del (EV_A_ w);
2743#endif 3898#endif
3899
3900 if (ev_is_active (&w->timer))
3901 {
3902 ev_ref (EV_A);
2744 ev_timer_stop (EV_A_ &w->timer); 3903 ev_timer_stop (EV_A_ &w->timer);
3904 }
2745 3905
2746 ev_stop (EV_A_ (W)w); 3906 ev_stop (EV_A_ (W)w);
2747 3907
2748 EV_FREQUENT_CHECK; 3908 EV_FREQUENT_CHECK;
2749} 3909}
… …
2794 3954
2795 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2796} 3956}
2797#endif 3957#endif
2798 3958
3959#if EV_PREPARE_ENABLE
2799void 3960void
2800ev_prepare_start (EV_P_ ev_prepare *w) 3961ev_prepare_start (EV_P_ ev_prepare *w)
2801{ 3962{
2802 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2803 return; 3964 return;
… …
2829 3990
2830 ev_stop (EV_A_ (W)w); 3991 ev_stop (EV_A_ (W)w);
2831 3992
2832 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
2833} 3994}
3995#endif
2834 3996
3997#if EV_CHECK_ENABLE
2835void 3998void
2836ev_check_start (EV_P_ ev_check *w) 3999ev_check_start (EV_P_ ev_check *w)
2837{ 4000{
2838 if (expect_false (ev_is_active (w))) 4001 if (expect_false (ev_is_active (w)))
2839 return; 4002 return;
… …
2865 4028
2866 ev_stop (EV_A_ (W)w); 4029 ev_stop (EV_A_ (W)w);
2867 4030
2868 EV_FREQUENT_CHECK; 4031 EV_FREQUENT_CHECK;
2869} 4032}
4033#endif
2870 4034
2871#if EV_EMBED_ENABLE 4035#if EV_EMBED_ENABLE
2872void noinline 4036void noinline
2873ev_embed_sweep (EV_P_ ev_embed *w) 4037ev_embed_sweep (EV_P_ ev_embed *w)
2874{ 4038{
2875 ev_loop (w->other, EVLOOP_NONBLOCK); 4039 ev_run (w->other, EVRUN_NOWAIT);
2876} 4040}
2877 4041
2878static void 4042static void
2879embed_io_cb (EV_P_ ev_io *io, int revents) 4043embed_io_cb (EV_P_ ev_io *io, int revents)
2880{ 4044{
2881 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4045 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2882 4046
2883 if (ev_cb (w)) 4047 if (ev_cb (w))
2884 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4048 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2885 else 4049 else
2886 ev_loop (w->other, EVLOOP_NONBLOCK); 4050 ev_run (w->other, EVRUN_NOWAIT);
2887} 4051}
2888 4052
2889static void 4053static void
2890embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4054embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2891{ 4055{
2892 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4056 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2893 4057
2894 { 4058 {
2895 struct ev_loop *loop = w->other; 4059 EV_P = w->other;
2896 4060
2897 while (fdchangecnt) 4061 while (fdchangecnt)
2898 { 4062 {
2899 fd_reify (EV_A); 4063 fd_reify (EV_A);
2900 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4064 ev_run (EV_A_ EVRUN_NOWAIT);
2901 } 4065 }
2902 } 4066 }
2903} 4067}
2904 4068
2905static void 4069static void
2906embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4070embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2907{ 4071{
2908 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4072 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2909 4073
4074 ev_embed_stop (EV_A_ w);
4075
2910 { 4076 {
2911 struct ev_loop *loop = w->other; 4077 EV_P = w->other;
2912 4078
2913 ev_loop_fork (EV_A); 4079 ev_loop_fork (EV_A);
4080 ev_run (EV_A_ EVRUN_NOWAIT);
2914 } 4081 }
4082
4083 ev_embed_start (EV_A_ w);
2915} 4084}
2916 4085
2917#if 0 4086#if 0
2918static void 4087static void
2919embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4088embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2927{ 4096{
2928 if (expect_false (ev_is_active (w))) 4097 if (expect_false (ev_is_active (w)))
2929 return; 4098 return;
2930 4099
2931 { 4100 {
2932 struct ev_loop *loop = w->other; 4101 EV_P = w->other;
2933 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4102 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2934 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4103 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2935 } 4104 }
2936 4105
2937 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
2938 4107
… …
2964 4133
2965 ev_io_stop (EV_A_ &w->io); 4134 ev_io_stop (EV_A_ &w->io);
2966 ev_prepare_stop (EV_A_ &w->prepare); 4135 ev_prepare_stop (EV_A_ &w->prepare);
2967 ev_fork_stop (EV_A_ &w->fork); 4136 ev_fork_stop (EV_A_ &w->fork);
2968 4137
4138 ev_stop (EV_A_ (W)w);
4139
2969 EV_FREQUENT_CHECK; 4140 EV_FREQUENT_CHECK;
2970} 4141}
2971#endif 4142#endif
2972 4143
2973#if EV_FORK_ENABLE 4144#if EV_FORK_ENABLE
… …
3006 4177
3007 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
3008} 4179}
3009#endif 4180#endif
3010 4181
4182#if EV_CLEANUP_ENABLE
4183void
4184ev_cleanup_start (EV_P_ ev_cleanup *w)
4185{
4186 if (expect_false (ev_is_active (w)))
4187 return;
4188
4189 EV_FREQUENT_CHECK;
4190
4191 ev_start (EV_A_ (W)w, ++cleanupcnt);
4192 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4193 cleanups [cleanupcnt - 1] = w;
4194
4195 /* cleanup watchers should never keep a refcount on the loop */
4196 ev_unref (EV_A);
4197 EV_FREQUENT_CHECK;
4198}
4199
4200void
4201ev_cleanup_stop (EV_P_ ev_cleanup *w)
4202{
4203 clear_pending (EV_A_ (W)w);
4204 if (expect_false (!ev_is_active (w)))
4205 return;
4206
4207 EV_FREQUENT_CHECK;
4208 ev_ref (EV_A);
4209
4210 {
4211 int active = ev_active (w);
4212
4213 cleanups [active - 1] = cleanups [--cleanupcnt];
4214 ev_active (cleanups [active - 1]) = active;
4215 }
4216
4217 ev_stop (EV_A_ (W)w);
4218
4219 EV_FREQUENT_CHECK;
4220}
4221#endif
4222
3011#if EV_ASYNC_ENABLE 4223#if EV_ASYNC_ENABLE
3012void 4224void
3013ev_async_start (EV_P_ ev_async *w) 4225ev_async_start (EV_P_ ev_async *w)
3014{ 4226{
3015 if (expect_false (ev_is_active (w))) 4227 if (expect_false (ev_is_active (w)))
3016 return; 4228 return;
3017 4229
4230 w->sent = 0;
4231
3018 evpipe_init (EV_A); 4232 evpipe_init (EV_A);
3019 4233
3020 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
3021 4235
3022 ev_start (EV_A_ (W)w, ++asynccnt); 4236 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3049 4263
3050void 4264void
3051ev_async_send (EV_P_ ev_async *w) 4265ev_async_send (EV_P_ ev_async *w)
3052{ 4266{
3053 w->sent = 1; 4267 w->sent = 1;
3054 evpipe_write (EV_A_ &gotasync); 4268 evpipe_write (EV_A_ &async_pending);
3055} 4269}
3056#endif 4270#endif
3057 4271
3058/*****************************************************************************/ 4272/*****************************************************************************/
3059 4273
… …
3099{ 4313{
3100 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3101 4315
3102 if (expect_false (!once)) 4316 if (expect_false (!once))
3103 { 4317 {
3104 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3105 return; 4319 return;
3106 } 4320 }
3107 4321
3108 once->cb = cb; 4322 once->cb = cb;
3109 once->arg = arg; 4323 once->arg = arg;
… …
3121 ev_timer_set (&once->to, timeout, 0.); 4335 ev_timer_set (&once->to, timeout, 0.);
3122 ev_timer_start (EV_A_ &once->to); 4336 ev_timer_start (EV_A_ &once->to);
3123 } 4337 }
3124} 4338}
3125 4339
4340/*****************************************************************************/
4341
4342#if EV_WALK_ENABLE
4343void ecb_cold
4344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4345{
4346 int i, j;
4347 ev_watcher_list *wl, *wn;
4348
4349 if (types & (EV_IO | EV_EMBED))
4350 for (i = 0; i < anfdmax; ++i)
4351 for (wl = anfds [i].head; wl; )
4352 {
4353 wn = wl->next;
4354
4355#if EV_EMBED_ENABLE
4356 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4357 {
4358 if (types & EV_EMBED)
4359 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4360 }
4361 else
4362#endif
4363#if EV_USE_INOTIFY
4364 if (ev_cb ((ev_io *)wl) == infy_cb)
4365 ;
4366 else
4367#endif
4368 if ((ev_io *)wl != &pipe_w)
4369 if (types & EV_IO)
4370 cb (EV_A_ EV_IO, wl);
4371
4372 wl = wn;
4373 }
4374
4375 if (types & (EV_TIMER | EV_STAT))
4376 for (i = timercnt + HEAP0; i-- > HEAP0; )
4377#if EV_STAT_ENABLE
4378 /*TODO: timer is not always active*/
4379 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4380 {
4381 if (types & EV_STAT)
4382 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4383 }
4384 else
4385#endif
4386 if (types & EV_TIMER)
4387 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4388
4389#if EV_PERIODIC_ENABLE
4390 if (types & EV_PERIODIC)
4391 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4393#endif
4394
4395#if EV_IDLE_ENABLE
4396 if (types & EV_IDLE)
4397 for (j = NUMPRI; j--; )
4398 for (i = idlecnt [j]; i--; )
4399 cb (EV_A_ EV_IDLE, idles [j][i]);
4400#endif
4401
4402#if EV_FORK_ENABLE
4403 if (types & EV_FORK)
4404 for (i = forkcnt; i--; )
4405 if (ev_cb (forks [i]) != embed_fork_cb)
4406 cb (EV_A_ EV_FORK, forks [i]);
4407#endif
4408
4409#if EV_ASYNC_ENABLE
4410 if (types & EV_ASYNC)
4411 for (i = asynccnt; i--; )
4412 cb (EV_A_ EV_ASYNC, asyncs [i]);
4413#endif
4414
4415#if EV_PREPARE_ENABLE
4416 if (types & EV_PREPARE)
4417 for (i = preparecnt; i--; )
4418# if EV_EMBED_ENABLE
4419 if (ev_cb (prepares [i]) != embed_prepare_cb)
4420# endif
4421 cb (EV_A_ EV_PREPARE, prepares [i]);
4422#endif
4423
4424#if EV_CHECK_ENABLE
4425 if (types & EV_CHECK)
4426 for (i = checkcnt; i--; )
4427 cb (EV_A_ EV_CHECK, checks [i]);
4428#endif
4429
4430#if EV_SIGNAL_ENABLE
4431 if (types & EV_SIGNAL)
4432 for (i = 0; i < EV_NSIG - 1; ++i)
4433 for (wl = signals [i].head; wl; )
4434 {
4435 wn = wl->next;
4436 cb (EV_A_ EV_SIGNAL, wl);
4437 wl = wn;
4438 }
4439#endif
4440
4441#if EV_CHILD_ENABLE
4442 if (types & EV_CHILD)
4443 for (i = (EV_PID_HASHSIZE); i--; )
4444 for (wl = childs [i]; wl; )
4445 {
4446 wn = wl->next;
4447 cb (EV_A_ EV_CHILD, wl);
4448 wl = wn;
4449 }
4450#endif
4451/* EV_STAT 0x00001000 /* stat data changed */
4452/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4453}
4454#endif
4455
3126#if EV_MULTIPLICITY 4456#if EV_MULTIPLICITY
3127 #include "ev_wrap.h" 4457 #include "ev_wrap.h"
3128#endif 4458#endif
3129 4459
3130#ifdef __cplusplus
3131}
3132#endif
3133

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