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Comparing libev/ev.c (file contents):
Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC vs.
Revision 1.447 by root, Tue Jun 19 12:29:43 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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
… …
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
162#else 184#else
163# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
169# include <unistd.h> 202# include <unistd.h>
170#else 203#else
171# include <io.h> 204# include <io.h>
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
173# include <windows.h> 207# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
176# endif 210# endif
211# undef EV_AVOID_STDIO
177#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
178 221
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
180 255
181#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 259# else
185# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
186# endif 261# endif
187#endif 262#endif
188 263
189#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 267# else
193# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
194# endif 269# endif
195#endif 270#endif
196 271
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 274#endif
200 275
201#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 279# else
205# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
206# endif 281# endif
207#endif 282#endif
208 283
209#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 286#endif
212 287
213#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
214# ifdef _WIN32 289# ifdef _WIN32
215# define EV_USE_POLL 0 290# define EV_USE_POLL 0
216# else 291# else
217# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 293# endif
219#endif 294#endif
220 295
221#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 299# else
225# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
226# endif 301# endif
227#endif 302#endif
228 303
… …
234# define EV_USE_PORT 0 309# define EV_USE_PORT 0
235#endif 310#endif
236 311
237#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 315# else
241# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
242# endif 317# endif
243#endif 318#endif
244 319
245#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 321# 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 322#endif
252 323
253#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 325# 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 326#endif
260 327
261#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 331# else
265# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
266# endif 341# endif
267#endif 342#endif
268 343
269#if 0 /* debugging */ 344#if 0 /* debugging */
270# define EV_VERIFY 3 345# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
273#endif 348#endif
274 349
275#ifndef EV_VERIFY 350#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 352#endif
278 353
279#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 356#endif
282 357
283#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h>
366# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1
370# else
371# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0
373# endif
285#endif 374#endif
286 375
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
288 383
289#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
292#endif 387#endif
… …
300# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
302#endif 397#endif
303 398
304#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 402# include <sys/select.h>
307# endif 403# endif
308#endif 404#endif
309 405
310#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 407# include <sys/statfs.h>
313# include <sys/inotify.h> 408# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
318# endif 413# endif
319#endif 414#endif
320 415
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
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 416#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 418# include <stdint.h>
337# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
338extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
339# endif 421# endif
340int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 423# ifdef O_CLOEXEC
342} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
343# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
344#endif 452#endif
345 453
346/**/ 454/**/
347 455
348#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 458#else
351# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
352#endif 460#endif
353 461
354/* 462/*
355 * This is used to avoid floating point rounding problems. 463 * 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. 464 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 465 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 468
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#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) */ 470#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 */
367 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 519 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
371#else 536#else
372# define expect(expr,value) (expr) 537 #include <inttypes.h>
373# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
375# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
376# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 557 #endif
558#endif
378 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
381#define inline_size static inline 1013#define inline_size ecb_inline
382 1014
383#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
384# define inline_speed static noinline 1018# define inline_speed static noinline
1019#endif
1020
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022
1023#if EV_MINPRI == EV_MAXPRI
1024# define ABSPRI(w) (((W)w), 0)
385#else 1025#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) 1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif
391 1028
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1029#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 1030#define EMPTY2(a,b) /* used to suppress some warnings */
394 1031
395typedef ev_watcher *W; 1032typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
401 1038
402#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* 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 */ 1041/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1043#endif
407 1044
408#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1047#endif
411 1048
1049#ifndef EV_FD_TO_WIN32_HANDLE
1050# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1051#endif
1052#ifndef EV_WIN32_HANDLE_TO_FD
1053# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1054#endif
1055#ifndef EV_WIN32_CLOSE_FD
1056# define EV_WIN32_CLOSE_FD(fd) close (fd)
1057#endif
1058
412#ifdef _WIN32 1059#ifdef _WIN32
413# include "ev_win32.c" 1060# include "ev_win32.c"
414#endif 1061#endif
415 1062
416/*****************************************************************************/ 1063/*****************************************************************************/
417 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
1155#if EV_AVOID_STDIO
1156static void noinline ecb_cold
1157ev_printerr (const char *msg)
1158{
1159 write (STDERR_FILENO, msg, strlen (msg));
1160}
1161#endif
1162
418static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
419 1164
420void 1165void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
422{ 1167{
423 syserr_cb = cb; 1168 syserr_cb = cb;
424} 1169}
425 1170
426static void noinline 1171static void noinline ecb_cold
427ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
428{ 1173{
429 if (!msg) 1174 if (!msg)
430 msg = "(libev) system error"; 1175 msg = "(libev) system error";
431 1176
432 if (syserr_cb) 1177 if (syserr_cb)
433 syserr_cb (msg); 1178 syserr_cb (msg);
434 else 1179 else
435 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
436 perror (msg); 1187 perror (msg);
1188#endif
437 abort (); 1189 abort ();
438 } 1190 }
439} 1191}
440 1192
441static void * 1193static void *
442ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
443{ 1195{
444 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it,
1200 * despite documenting it otherwise.
447 */ 1201 */
448 1202
449 if (size) 1203 if (size)
450 return realloc (ptr, size); 1204 return realloc (ptr, size);
451 1205
452 free (ptr); 1206 free (ptr);
453 return 0; 1207 return 0;
454} 1208}
455 1209
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1211
458void 1212void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
460{ 1214{
461 alloc = cb; 1215 alloc = cb;
462} 1216}
463 1217
464inline_speed void * 1218inline_speed void *
… …
466{ 1220{
467 ptr = alloc (ptr, size); 1221 ptr = alloc (ptr, size);
468 1222
469 if (!ptr && size) 1223 if (!ptr && size)
470 { 1224 {
1225#if EV_AVOID_STDIO
1226 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1227#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1228 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1229#endif
472 abort (); 1230 abort ();
473 } 1231 }
474 1232
475 return ptr; 1233 return ptr;
476} 1234}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1236#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1237#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1238
481/*****************************************************************************/ 1239/*****************************************************************************/
482 1240
1241/* set in reify when reification needed */
1242#define EV_ANFD_REIFY 1
1243
1244/* file descriptor info structure */
483typedef struct 1245typedef struct
484{ 1246{
485 WL head; 1247 WL head;
486 unsigned char events; 1248 unsigned char events; /* the events watched for */
487 unsigned char reify; 1249 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1250 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1251 unsigned char unused;
490#if EV_USE_EPOLL 1252#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1253 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1254#endif
493#if EV_SELECT_IS_WINSOCKET 1255#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1256 SOCKET handle;
495#endif 1257#endif
1258#if EV_USE_IOCP
1259 OVERLAPPED or, ow;
1260#endif
496} ANFD; 1261} ANFD;
497 1262
1263/* stores the pending event set for a given watcher */
498typedef struct 1264typedef struct
499{ 1265{
500 W w; 1266 W w;
501 int events; 1267 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1268} ANPENDING;
503 1269
504#if EV_USE_INOTIFY 1270#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1271/* hash table entry per inotify-id */
506typedef struct 1272typedef struct
… …
509} ANFS; 1275} ANFS;
510#endif 1276#endif
511 1277
512/* Heap Entry */ 1278/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1279#if EV_HEAP_CACHE_AT
1280 /* a heap element */
514 typedef struct { 1281 typedef struct {
515 ev_tstamp at; 1282 ev_tstamp at;
516 WT w; 1283 WT w;
517 } ANHE; 1284 } ANHE;
518 1285
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1286 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1287 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1288 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1289#else
1290 /* a heap element */
523 typedef WT ANHE; 1291 typedef WT ANHE;
524 1292
525 #define ANHE_w(he) (he) 1293 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1294 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1295 #define ANHE_at_cache(he)
… …
538 #undef VAR 1306 #undef VAR
539 }; 1307 };
540 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
541 1309
542 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1311 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1312
545#else 1313#else
546 1314
547 ev_tstamp ev_rt_now; 1315 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
548 #define VAR(name,decl) static decl; 1316 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1317 #include "ev_vars.h"
550 #undef VAR 1318 #undef VAR
551 1319
552 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
553 1321
554#endif 1322#endif
555 1323
1324#if EV_FEATURE_API
1325# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1326# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1327# define EV_INVOKE_PENDING invoke_cb (EV_A)
1328#else
1329# define EV_RELEASE_CB (void)0
1330# define EV_ACQUIRE_CB (void)0
1331# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1332#endif
1333
1334#define EVBREAK_RECURSE 0x80
1335
556/*****************************************************************************/ 1336/*****************************************************************************/
557 1337
1338#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1339ev_tstamp
559ev_time (void) 1340ev_time (void) EV_THROW
560{ 1341{
561#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1343 if (expect_true (have_realtime))
563 { 1344 {
564 struct timespec ts; 1345 struct timespec ts;
… …
569 1350
570 struct timeval tv; 1351 struct timeval tv;
571 gettimeofday (&tv, 0); 1352 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1353 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1354}
1355#endif
574 1356
575inline_size ev_tstamp 1357inline_size ev_tstamp
576get_clock (void) 1358get_clock (void)
577{ 1359{
578#if EV_USE_MONOTONIC 1360#if EV_USE_MONOTONIC
… …
587 return ev_time (); 1369 return ev_time ();
588} 1370}
589 1371
590#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
591ev_tstamp 1373ev_tstamp
592ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
593{ 1375{
594 return ev_rt_now; 1376 return ev_rt_now;
595} 1377}
596#endif 1378#endif
597 1379
598void 1380void
599ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
600{ 1382{
601 if (delay > 0.) 1383 if (delay > 0.)
602 { 1384 {
603#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
604 struct timespec ts; 1386 struct timespec ts;
605 1387
606 ts.tv_sec = (time_t)delay; 1388 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1390#elif defined _WIN32
611 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
612#else 1392#else
613 struct timeval tv; 1393 struct timeval tv;
614 1394
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1396 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1397 /* by older ones */
1398 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
622#endif 1400#endif
623 } 1401 }
624} 1402}
625 1403
626/*****************************************************************************/ 1404/*****************************************************************************/
627 1405
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1406#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1407
1408/* find a suitable new size for the given array, */
1409/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1410inline_size int
631array_nextsize (int elem, int cur, int cnt) 1411array_nextsize (int elem, int cur, int cnt)
632{ 1412{
633 int ncur = cur + 1; 1413 int ncur = cur + 1;
634 1414
635 do 1415 do
636 ncur <<= 1; 1416 ncur <<= 1;
637 while (cnt > ncur); 1417 while (cnt > ncur);
638 1418
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1419 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1421 {
642 ncur *= elem; 1422 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1423 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1426 }
647 1427
648 return ncur; 1428 return ncur;
649} 1429}
650 1430
651static noinline void * 1431static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1433{
654 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
656} 1436}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1440
661#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
663 { \ 1443 { \
664 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1448 }
669 1449
… …
680#define array_free(stem, idx) \ 1460#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1462
683/*****************************************************************************/ 1463/*****************************************************************************/
684 1464
1465/* dummy callback for pending events */
1466static void noinline
1467pendingcb (EV_P_ ev_prepare *w, int revents)
1468{
1469}
1470
685void noinline 1471void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
687{ 1473{
688 W w_ = (W)w; 1474 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
690 1476
691 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
695 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
696 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
697 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
699 } 1485 }
1486
1487 pendingpri = NUMPRI - 1;
700} 1488}
701 1489
702inline_speed void 1490inline_speed void
703feed_reverse (EV_P_ W w) 1491feed_reverse (EV_P_ W w)
704{ 1492{
… …
724} 1512}
725 1513
726/*****************************************************************************/ 1514/*****************************************************************************/
727 1515
728inline_speed void 1516inline_speed void
729fd_event (EV_P_ int fd, int revents) 1517fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1518{
731 ANFD *anfd = anfds + fd; 1519 ANFD *anfd = anfds + fd;
732 ev_io *w; 1520 ev_io *w;
733 1521
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1526 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1527 ev_feed_event (EV_A_ (W)w, ev);
740 } 1528 }
741} 1529}
742 1530
1531/* do not submit kernel events for fds that have reify set */
1532/* because that means they changed while we were polling for new events */
1533inline_speed void
1534fd_event (EV_P_ int fd, int revents)
1535{
1536 ANFD *anfd = anfds + fd;
1537
1538 if (expect_true (!anfd->reify))
1539 fd_event_nocheck (EV_A_ fd, revents);
1540}
1541
743void 1542void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
745{ 1544{
746 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
748} 1547}
749 1548
1549/* make sure the external fd watch events are in-sync */
1550/* with the kernel/libev internal state */
750inline_size void 1551inline_size void
751fd_reify (EV_P) 1552fd_reify (EV_P)
752{ 1553{
753 int i; 1554 int i;
1555
1556#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1557 for (i = 0; i < fdchangecnt; ++i)
1558 {
1559 int fd = fdchanges [i];
1560 ANFD *anfd = anfds + fd;
1561
1562 if (anfd->reify & EV__IOFDSET && anfd->head)
1563 {
1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1565
1566 if (handle != anfd->handle)
1567 {
1568 unsigned long arg;
1569
1570 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1571
1572 /* handle changed, but fd didn't - we need to do it in two steps */
1573 backend_modify (EV_A_ fd, anfd->events, 0);
1574 anfd->events = 0;
1575 anfd->handle = handle;
1576 }
1577 }
1578 }
1579#endif
754 1580
755 for (i = 0; i < fdchangecnt; ++i) 1581 for (i = 0; i < fdchangecnt; ++i)
756 { 1582 {
757 int fd = fdchanges [i]; 1583 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1584 ANFD *anfd = anfds + fd;
759 ev_io *w; 1585 ev_io *w;
760 1586
761 unsigned char events = 0; 1587 unsigned char o_events = anfd->events;
1588 unsigned char o_reify = anfd->reify;
762 1589
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1590 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1591
766#if EV_SELECT_IS_WINSOCKET 1592 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1593 {
769 unsigned long arg; 1594 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1595
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1596 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1597 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1598
774 #endif 1599 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1600 o_reify = EV__IOFDSET; /* actually |= */
776 } 1601 }
777#endif
778 1602
779 { 1603 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1604 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1605 }
790 1606
791 fdchangecnt = 0; 1607 fdchangecnt = 0;
792} 1608}
793 1609
1610/* something about the given fd changed */
794inline_size void 1611inline_size void
795fd_change (EV_P_ int fd, int flags) 1612fd_change (EV_P_ int fd, int flags)
796{ 1613{
797 unsigned char reify = anfds [fd].reify; 1614 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1615 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1620 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
805 } 1622 }
806} 1623}
807 1624
1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1626inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
810{ 1628{
811 ev_io *w; 1629 ev_io *w;
812 1630
813 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1633 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1635 }
818} 1636}
819 1637
1638/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1639inline_size int ecb_cold
821fd_valid (int fd) 1640fd_valid (int fd)
822{ 1641{
823#ifdef _WIN32 1642#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1644#else
826 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
827#endif 1646#endif
828} 1647}
829 1648
830/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
831static void noinline 1650static void noinline ecb_cold
832fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
833{ 1652{
834 int fd; 1653 int fd;
835 1654
836 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
840} 1659}
841 1660
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1661/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1662static void noinline ecb_cold
844fd_enomem (EV_P) 1663fd_enomem (EV_P)
845{ 1664{
846 int fd; 1665 int fd;
847 1666
848 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1668 if (anfds [fd].events)
850 { 1669 {
851 fd_kill (EV_A_ fd); 1670 fd_kill (EV_A_ fd);
852 return; 1671 break;
853 } 1672 }
854} 1673}
855 1674
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1675/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1676static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1681 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1682 if (anfds [fd].events)
864 { 1683 {
865 anfds [fd].events = 0; 1684 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1685 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1686 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1687 }
869} 1688}
870 1689
1690/* used to prepare libev internal fd's */
1691/* this is not fork-safe */
1692inline_speed void
1693fd_intern (int fd)
1694{
1695#ifdef _WIN32
1696 unsigned long arg = 1;
1697 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1698#else
1699 fcntl (fd, F_SETFD, FD_CLOEXEC);
1700 fcntl (fd, F_SETFL, O_NONBLOCK);
1701#endif
1702}
1703
871/*****************************************************************************/ 1704/*****************************************************************************/
872 1705
873/* 1706/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1707 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1708 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1709 * the branching factor of the d-tree.
877 */ 1710 */
878 1711
879/* 1712/*
… …
947 1780
948 for (;;) 1781 for (;;)
949 { 1782 {
950 int c = k << 1; 1783 int c = k << 1;
951 1784
952 if (c > N + HEAP0 - 1) 1785 if (c >= N + HEAP0)
953 break; 1786 break;
954 1787
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1788 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1789 ? 1 : 0;
957 1790
… …
989 1822
990 heap [k] = he; 1823 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1824 ev_active (ANHE_w (he)) = k;
992} 1825}
993 1826
1827/* move an element suitably so it is in a correct place */
994inline_size void 1828inline_size void
995adjustheap (ANHE *heap, int N, int k) 1829adjustheap (ANHE *heap, int N, int k)
996{ 1830{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1831 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1832 upheap (heap, k);
999 else 1833 else
1000 downheap (heap, N, k); 1834 downheap (heap, N, k);
1001} 1835}
1002 1836
… …
1012 upheap (heap, i + HEAP0); 1846 upheap (heap, i + HEAP0);
1013} 1847}
1014 1848
1015/*****************************************************************************/ 1849/*****************************************************************************/
1016 1850
1851/* associate signal watchers to a signal signal */
1017typedef struct 1852typedef struct
1018{ 1853{
1854 EV_ATOMIC_T pending;
1855#if EV_MULTIPLICITY
1856 EV_P;
1857#endif
1019 WL head; 1858 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1859} ANSIG;
1022 1860
1023static ANSIG *signals; 1861static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1862
1028/*****************************************************************************/ 1863/*****************************************************************************/
1029 1864
1030inline_speed void 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1866
1042static void noinline 1867static void noinline ecb_cold
1043evpipe_init (EV_P) 1868evpipe_init (EV_P)
1044{ 1869{
1045 if (!ev_is_active (&pipeev)) 1870 if (!ev_is_active (&pipe_w))
1046 { 1871 {
1047#if EV_USE_EVENTFD 1872# if EV_USE_EVENTFD
1873 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1874 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1875 evfd = eventfd (0, 0);
1876
1877 if (evfd >= 0)
1049 { 1878 {
1050 evpipe [0] = -1; 1879 evpipe [0] = -1;
1051 fd_intern (evfd); 1880 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1881 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1882 }
1054 else 1883 else
1055#endif 1884# endif
1056 { 1885 {
1057 while (pipe (evpipe)) 1886 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1887 ev_syserr ("(libev) error creating signal/async pipe");
1059 1888
1060 fd_intern (evpipe [0]); 1889 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1890 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1891 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1892 }
1064 1893
1065 ev_io_start (EV_A_ &pipeev); 1894 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1895 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1896 }
1068} 1897}
1069 1898
1070inline_size void 1899inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1900evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1901{
1073 if (!*flag) 1902 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1903
1904 if (expect_true (*flag))
1905 return;
1906
1907 *flag = 1;
1908 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1909
1910 pipe_write_skipped = 1;
1911
1912 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1913
1914 if (pipe_write_wanted)
1074 { 1915 {
1916 int old_errno;
1917
1918 pipe_write_skipped = 0;
1919 ECB_MEMORY_FENCE_RELEASE;
1920
1075 int old_errno = errno; /* save errno because write might clobber it */ 1921 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1922
1079#if EV_USE_EVENTFD 1923#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1924 if (evfd >= 0)
1081 { 1925 {
1082 uint64_t counter = 1; 1926 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1927 write (evfd, &counter, sizeof (uint64_t));
1084 } 1928 }
1085 else 1929 else
1086#endif 1930#endif
1931 {
1932#ifdef _WIN32
1933 WSABUF buf;
1934 DWORD sent;
1935 buf.buf = &buf;
1936 buf.len = 1;
1937 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1938#else
1087 write (evpipe [1], &old_errno, 1); 1939 write (evpipe [1], &(evpipe [1]), 1);
1940#endif
1941 }
1088 1942
1089 errno = old_errno; 1943 errno = old_errno;
1090 } 1944 }
1091} 1945}
1092 1946
1947/* called whenever the libev signal pipe */
1948/* got some events (signal, async) */
1093static void 1949static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1950pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1951{
1952 int i;
1953
1954 if (revents & EV_READ)
1955 {
1096#if EV_USE_EVENTFD 1956#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1957 if (evfd >= 0)
1098 { 1958 {
1099 uint64_t counter; 1959 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1960 read (evfd, &counter, sizeof (uint64_t));
1101 } 1961 }
1102 else 1962 else
1103#endif 1963#endif
1104 { 1964 {
1105 char dummy; 1965 char dummy[4];
1966#ifdef _WIN32
1967 WSABUF buf;
1968 DWORD recvd;
1969 DWORD flags = 0;
1970 buf.buf = dummy;
1971 buf.len = sizeof (dummy);
1972 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1973#else
1106 read (evpipe [0], &dummy, 1); 1974 read (evpipe [0], &dummy, sizeof (dummy));
1975#endif
1976 }
1977 }
1978
1979 pipe_write_skipped = 0;
1980
1981 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1982
1983#if EV_SIGNAL_ENABLE
1984 if (sig_pending)
1107 } 1985 {
1986 sig_pending = 0;
1108 1987
1109 if (gotsig && ev_is_default_loop (EV_A)) 1988 ECB_MEMORY_FENCE;
1110 {
1111 int signum;
1112 gotsig = 0;
1113 1989
1114 for (signum = signalmax; signum--; ) 1990 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1991 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1992 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1993 }
1994#endif
1118 1995
1119#if EV_ASYNC_ENABLE 1996#if EV_ASYNC_ENABLE
1120 if (gotasync) 1997 if (async_pending)
1121 { 1998 {
1122 int i; 1999 async_pending = 0;
1123 gotasync = 0; 2000
2001 ECB_MEMORY_FENCE;
1124 2002
1125 for (i = asynccnt; i--; ) 2003 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 2004 if (asyncs [i]->sent)
1127 { 2005 {
1128 asyncs [i]->sent = 0; 2006 asyncs [i]->sent = 0;
2007 ECB_MEMORY_FENCE_RELEASE;
1129 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2008 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1130 } 2009 }
1131 } 2010 }
1132#endif 2011#endif
1133} 2012}
1134 2013
1135/*****************************************************************************/ 2014/*****************************************************************************/
1136 2015
2016void
2017ev_feed_signal (int signum) EV_THROW
2018{
2019#if EV_MULTIPLICITY
2020 EV_P = signals [signum - 1].loop;
2021
2022 if (!EV_A)
2023 return;
2024#endif
2025
2026 if (!ev_active (&pipe_w))
2027 return;
2028
2029 signals [signum - 1].pending = 1;
2030 evpipe_write (EV_A_ &sig_pending);
2031}
2032
1137static void 2033static void
1138ev_sighandler (int signum) 2034ev_sighandler (int signum)
1139{ 2035{
2036#ifdef _WIN32
2037 signal (signum, ev_sighandler);
2038#endif
2039
2040 ev_feed_signal (signum);
2041}
2042
2043void noinline
2044ev_feed_signal_event (EV_P_ int signum) EV_THROW
2045{
2046 WL w;
2047
2048 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2049 return;
2050
2051 --signum;
2052
1140#if EV_MULTIPLICITY 2053#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 2054 /* it is permissible to try to feed a signal to the wrong loop */
1142#endif 2055 /* or, likely more useful, feeding a signal nobody is waiting for */
1143 2056
1144#if _WIN32 2057 if (expect_false (signals [signum].loop != EV_A))
1145 signal (signum, ev_sighandler);
1146#endif
1147
1148 signals [signum - 1].gotsig = 1;
1149 evpipe_write (EV_A_ &gotsig);
1150}
1151
1152void noinline
1153ev_feed_signal_event (EV_P_ int signum)
1154{
1155 WL w;
1156
1157#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1159#endif
1160
1161 --signum;
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 2058 return;
2059#endif
1165 2060
1166 signals [signum].gotsig = 0; 2061 signals [signum].pending = 0;
2062 ECB_MEMORY_FENCE_RELEASE;
1167 2063
1168 for (w = signals [signum].head; w; w = w->next) 2064 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2065 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 2066}
1171 2067
2068#if EV_USE_SIGNALFD
2069static void
2070sigfdcb (EV_P_ ev_io *iow, int revents)
2071{
2072 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2073
2074 for (;;)
2075 {
2076 ssize_t res = read (sigfd, si, sizeof (si));
2077
2078 /* not ISO-C, as res might be -1, but works with SuS */
2079 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2080 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2081
2082 if (res < (ssize_t)sizeof (si))
2083 break;
2084 }
2085}
2086#endif
2087
2088#endif
2089
1172/*****************************************************************************/ 2090/*****************************************************************************/
1173 2091
2092#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2093static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2094
1178static ev_signal childev; 2095static ev_signal childev;
1179 2096
1180#ifndef WIFCONTINUED 2097#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2098# define WIFCONTINUED(status) 0
1182#endif 2099#endif
1183 2100
2101/* handle a single child status event */
1184inline_speed void 2102inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2103child_reap (EV_P_ int chain, int pid, int status)
1186{ 2104{
1187 ev_child *w; 2105 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2106 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2107
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2108 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2109 {
1192 if ((w->pid == pid || !w->pid) 2110 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2111 && (!traced || (w->flags & 1)))
1194 { 2112 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2113 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2120
1203#ifndef WCONTINUED 2121#ifndef WCONTINUED
1204# define WCONTINUED 0 2122# define WCONTINUED 0
1205#endif 2123#endif
1206 2124
2125/* called on sigchld etc., calls waitpid */
1207static void 2126static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2127childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2128{
1210 int pid, status; 2129 int pid, status;
1211 2130
… …
1219 /* make sure we are called again until all children have been reaped */ 2138 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 2139 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2140 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2141
1223 child_reap (EV_A_ pid, pid, status); 2142 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2143 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2144 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2145}
1227 2146
1228#endif 2147#endif
1229 2148
1230/*****************************************************************************/ 2149/*****************************************************************************/
1231 2150
2151#if EV_USE_IOCP
2152# include "ev_iocp.c"
2153#endif
1232#if EV_USE_PORT 2154#if EV_USE_PORT
1233# include "ev_port.c" 2155# include "ev_port.c"
1234#endif 2156#endif
1235#if EV_USE_KQUEUE 2157#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2158# include "ev_kqueue.c"
… …
1243#endif 2165#endif
1244#if EV_USE_SELECT 2166#if EV_USE_SELECT
1245# include "ev_select.c" 2167# include "ev_select.c"
1246#endif 2168#endif
1247 2169
1248int 2170int ecb_cold
1249ev_version_major (void) 2171ev_version_major (void) EV_THROW
1250{ 2172{
1251 return EV_VERSION_MAJOR; 2173 return EV_VERSION_MAJOR;
1252} 2174}
1253 2175
1254int 2176int ecb_cold
1255ev_version_minor (void) 2177ev_version_minor (void) EV_THROW
1256{ 2178{
1257 return EV_VERSION_MINOR; 2179 return EV_VERSION_MINOR;
1258} 2180}
1259 2181
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2182/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2183int inline_size ecb_cold
1262enable_secure (void) 2184enable_secure (void)
1263{ 2185{
1264#ifdef _WIN32 2186#ifdef _WIN32
1265 return 0; 2187 return 0;
1266#else 2188#else
1267 return getuid () != geteuid () 2189 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2190 || getgid () != getegid ();
1269#endif 2191#endif
1270} 2192}
1271 2193
1272unsigned int 2194unsigned int ecb_cold
1273ev_supported_backends (void) 2195ev_supported_backends (void) EV_THROW
1274{ 2196{
1275 unsigned int flags = 0; 2197 unsigned int flags = 0;
1276 2198
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2199 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1278 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2200 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2203 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2204
1283 return flags; 2205 return flags;
1284} 2206}
1285 2207
1286unsigned int 2208unsigned int ecb_cold
1287ev_recommended_backends (void) 2209ev_recommended_backends (void) EV_THROW
1288{ 2210{
1289 unsigned int flags = ev_supported_backends (); 2211 unsigned int flags = ev_supported_backends ();
1290 2212
1291#ifndef __NetBSD__ 2213#ifndef __NetBSD__
1292 /* kqueue is borked on everything but netbsd apparently */ 2214 /* kqueue is borked on everything but netbsd apparently */
… …
1296#ifdef __APPLE__ 2218#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2219 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2220 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2221 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2222#endif
2223#ifdef __FreeBSD__
2224 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2225#endif
1301 2226
1302 return flags; 2227 return flags;
1303} 2228}
1304 2229
2230unsigned int ecb_cold
2231ev_embeddable_backends (void) EV_THROW
2232{
2233 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2234
2235 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2236 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2237 flags &= ~EVBACKEND_EPOLL;
2238
2239 return flags;
2240}
2241
1305unsigned int 2242unsigned int
1306ev_embeddable_backends (void) 2243ev_backend (EV_P) EV_THROW
1307{ 2244{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2245 return backend;
1309
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */
1312 flags &= ~EVBACKEND_EPOLL;
1313
1314 return flags;
1315} 2246}
1316 2247
2248#if EV_FEATURE_API
1317unsigned int 2249unsigned int
1318ev_backend (EV_P) 2250ev_iteration (EV_P) EV_THROW
1319{ 2251{
1320 return backend; 2252 return loop_count;
1321} 2253}
1322 2254
1323unsigned int 2255unsigned int
1324ev_loop_count (EV_P) 2256ev_depth (EV_P) EV_THROW
1325{ 2257{
1326 return loop_count; 2258 return loop_depth;
1327} 2259}
1328 2260
1329void 2261void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2262ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1331{ 2263{
1332 io_blocktime = interval; 2264 io_blocktime = interval;
1333} 2265}
1334 2266
1335void 2267void
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2268ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1337{ 2269{
1338 timeout_blocktime = interval; 2270 timeout_blocktime = interval;
1339} 2271}
1340 2272
2273void
2274ev_set_userdata (EV_P_ void *data) EV_THROW
2275{
2276 userdata = data;
2277}
2278
2279void *
2280ev_userdata (EV_P) EV_THROW
2281{
2282 return userdata;
2283}
2284
2285void
2286ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2287{
2288 invoke_cb = invoke_pending_cb;
2289}
2290
2291void
2292ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2293{
2294 release_cb = release;
2295 acquire_cb = acquire;
2296}
2297#endif
2298
2299/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2300static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2301loop_init (EV_P_ unsigned int flags) EV_THROW
1343{ 2302{
1344 if (!backend) 2303 if (!backend)
1345 { 2304 {
2305 origflags = flags;
2306
1346#if EV_USE_REALTIME 2307#if EV_USE_REALTIME
1347 if (!have_realtime) 2308 if (!have_realtime)
1348 { 2309 {
1349 struct timespec ts; 2310 struct timespec ts;
1350 2311
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2322 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2323 have_monotonic = 1;
1363 } 2324 }
1364#endif 2325#endif
1365 2326
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 2327 /* pid check not overridable via env */
1381#ifndef _WIN32 2328#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2329 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2330 curpid = getpid ();
1384#endif 2331#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2333 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2334 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2335 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2336 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2337
1391 if (!(flags & 0x0000ffffU)) 2338 ev_rt_now = ev_time ();
2339 mn_now = get_clock ();
2340 now_floor = mn_now;
2341 rtmn_diff = ev_rt_now - mn_now;
2342#if EV_FEATURE_API
2343 invoke_cb = ev_invoke_pending;
2344#endif
2345
2346 io_blocktime = 0.;
2347 timeout_blocktime = 0.;
2348 backend = 0;
2349 backend_fd = -1;
2350 sig_pending = 0;
2351#if EV_ASYNC_ENABLE
2352 async_pending = 0;
2353#endif
2354 pipe_write_skipped = 0;
2355 pipe_write_wanted = 0;
2356#if EV_USE_INOTIFY
2357 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2358#endif
2359#if EV_USE_SIGNALFD
2360 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2361#endif
2362
2363 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2364 flags |= ev_recommended_backends ();
1393 2365
2366#if EV_USE_IOCP
2367 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2368#endif
1394#if EV_USE_PORT 2369#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2370 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2371#endif
1397#if EV_USE_KQUEUE 2372#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2373 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2380#endif
1406#if EV_USE_SELECT 2381#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2382 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2383#endif
1409 2384
2385 ev_prepare_init (&pending_w, pendingcb);
2386
2387#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2388 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2389 ev_set_priority (&pipe_w, EV_MAXPRI);
2390#endif
1412 } 2391 }
1413} 2392}
1414 2393
1415static void noinline 2394/* free up a loop structure */
2395void ecb_cold
1416loop_destroy (EV_P) 2396ev_loop_destroy (EV_P)
1417{ 2397{
1418 int i; 2398 int i;
1419 2399
2400#if EV_MULTIPLICITY
2401 /* mimic free (0) */
2402 if (!EV_A)
2403 return;
2404#endif
2405
2406#if EV_CLEANUP_ENABLE
2407 /* queue cleanup watchers (and execute them) */
2408 if (expect_false (cleanupcnt))
2409 {
2410 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2411 EV_INVOKE_PENDING;
2412 }
2413#endif
2414
2415#if EV_CHILD_ENABLE
2416 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2417 {
2418 ev_ref (EV_A); /* child watcher */
2419 ev_signal_stop (EV_A_ &childev);
2420 }
2421#endif
2422
1420 if (ev_is_active (&pipeev)) 2423 if (ev_is_active (&pipe_w))
1421 { 2424 {
1422 ev_ref (EV_A); /* signal watcher */ 2425 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2426 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2427
1425#if EV_USE_EVENTFD 2428#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2429 if (evfd >= 0)
1427 close (evfd); 2430 close (evfd);
1428#endif 2431#endif
1429 2432
1430 if (evpipe [0] >= 0) 2433 if (evpipe [0] >= 0)
1431 { 2434 {
1432 close (evpipe [0]); 2435 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2436 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2437 }
1435 } 2438 }
2439
2440#if EV_USE_SIGNALFD
2441 if (ev_is_active (&sigfd_w))
2442 close (sigfd);
2443#endif
1436 2444
1437#if EV_USE_INOTIFY 2445#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2446 if (fs_fd >= 0)
1439 close (fs_fd); 2447 close (fs_fd);
1440#endif 2448#endif
1441 2449
1442 if (backend_fd >= 0) 2450 if (backend_fd >= 0)
1443 close (backend_fd); 2451 close (backend_fd);
1444 2452
2453#if EV_USE_IOCP
2454 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2455#endif
1445#if EV_USE_PORT 2456#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2457 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2458#endif
1448#if EV_USE_KQUEUE 2459#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2460 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2475#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2476 array_free (idle, [i]);
1466#endif 2477#endif
1467 } 2478 }
1468 2479
1469 ev_free (anfds); anfdmax = 0; 2480 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2481
1471 /* have to use the microsoft-never-gets-it-right macro */ 2482 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2483 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2484 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2485 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2487 array_free (periodic, EMPTY);
1477#endif 2488#endif
1478#if EV_FORK_ENABLE 2489#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2490 array_free (fork, EMPTY);
1480#endif 2491#endif
2492#if EV_CLEANUP_ENABLE
2493 array_free (cleanup, EMPTY);
2494#endif
1481 array_free (prepare, EMPTY); 2495 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2496 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2497#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2498 array_free (async, EMPTY);
1485#endif 2499#endif
1486 2500
1487 backend = 0; 2501 backend = 0;
2502
2503#if EV_MULTIPLICITY
2504 if (ev_is_default_loop (EV_A))
2505#endif
2506 ev_default_loop_ptr = 0;
2507#if EV_MULTIPLICITY
2508 else
2509 ev_free (EV_A);
2510#endif
1488} 2511}
1489 2512
1490#if EV_USE_INOTIFY 2513#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2514inline_size void infy_fork (EV_P);
1492#endif 2515#endif
… …
1505#endif 2528#endif
1506#if EV_USE_INOTIFY 2529#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2530 infy_fork (EV_A);
1508#endif 2531#endif
1509 2532
1510 if (ev_is_active (&pipeev)) 2533 if (ev_is_active (&pipe_w))
1511 { 2534 {
1512 /* this "locks" the handlers against writing to the pipe */ 2535 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 2536
1519 ev_ref (EV_A); 2537 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2538 ev_io_stop (EV_A_ &pipe_w);
1521 2539
1522#if EV_USE_EVENTFD 2540#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2541 if (evfd >= 0)
1524 close (evfd); 2542 close (evfd);
1525#endif 2543#endif
1526 2544
1527 if (evpipe [0] >= 0) 2545 if (evpipe [0] >= 0)
1528 { 2546 {
1529 close (evpipe [0]); 2547 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2548 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2549 }
1532 2550
2551#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2552 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2553 /* iterate over everything, in case we missed something before */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2554 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2555#endif
1536 } 2556 }
1537 2557
1538 postfork = 0; 2558 postfork = 0;
1539} 2559}
1540 2560
1541#if EV_MULTIPLICITY 2561#if EV_MULTIPLICITY
1542 2562
1543struct ev_loop * 2563struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2564ev_loop_new (unsigned int flags) EV_THROW
1545{ 2565{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2566 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2567
1548 memset (loop, 0, sizeof (struct ev_loop)); 2568 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2569 loop_init (EV_A_ flags);
1551 2570
1552 if (ev_backend (EV_A)) 2571 if (ev_backend (EV_A))
1553 return loop; 2572 return EV_A;
1554 2573
2574 ev_free (EV_A);
1555 return 0; 2575 return 0;
1556} 2576}
1557 2577
1558void 2578#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 2579
1571#if EV_VERIFY 2580#if EV_VERIFY
1572static void noinline 2581static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2582verify_watcher (EV_P_ W w)
1574{ 2583{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2584 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2585
1577 if (w->pending) 2586 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2587 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2588}
1580 2589
1581static void noinline 2590static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2591verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2592{
1584 int i; 2593 int i;
1585 2594
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2595 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2600
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2601 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2602 }
1594} 2603}
1595 2604
1596static void noinline 2605static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2606array_verify (EV_P_ W *ws, int cnt)
1598{ 2607{
1599 while (cnt--) 2608 while (cnt--)
1600 { 2609 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2610 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2611 verify_watcher (EV_A_ ws [cnt]);
1603 } 2612 }
1604} 2613}
1605#endif 2614#endif
1606 2615
1607void 2616#if EV_FEATURE_API
1608ev_loop_verify (EV_P) 2617void ecb_cold
2618ev_verify (EV_P) EV_THROW
1609{ 2619{
1610#if EV_VERIFY 2620#if EV_VERIFY
1611 int i; 2621 int i;
1612 WL w; 2622 WL w, w2;
1613 2623
1614 assert (activecnt >= -1); 2624 assert (activecnt >= -1);
1615 2625
1616 assert (fdchangemax >= fdchangecnt); 2626 assert (fdchangemax >= fdchangecnt);
1617 for (i = 0; i < fdchangecnt; ++i) 2627 for (i = 0; i < fdchangecnt; ++i)
1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2628 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1619 2629
1620 assert (anfdmax >= 0); 2630 assert (anfdmax >= 0);
1621 for (i = 0; i < anfdmax; ++i) 2631 for (i = 0; i < anfdmax; ++i)
2632 {
2633 int j = 0;
2634
1622 for (w = anfds [i].head; w; w = w->next) 2635 for (w = w2 = anfds [i].head; w; w = w->next)
1623 { 2636 {
1624 verify_watcher (EV_A_ (W)w); 2637 verify_watcher (EV_A_ (W)w);
2638
2639 if (j++ & 1)
2640 {
2641 assert (("libev: io watcher list contains a loop", w != w2));
2642 w2 = w2->next;
2643 }
2644
1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2645 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1626 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2646 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1627 } 2647 }
2648 }
1628 2649
1629 assert (timermax >= timercnt); 2650 assert (timermax >= timercnt);
1630 verify_heap (EV_A_ timers, timercnt); 2651 verify_heap (EV_A_ timers, timercnt);
1631 2652
1632#if EV_PERIODIC_ENABLE 2653#if EV_PERIODIC_ENABLE
… …
1647#if EV_FORK_ENABLE 2668#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2669 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2670 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2671#endif
1651 2672
2673#if EV_CLEANUP_ENABLE
2674 assert (cleanupmax >= cleanupcnt);
2675 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2676#endif
2677
1652#if EV_ASYNC_ENABLE 2678#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2679 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2680 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2681#endif
1656 2682
2683#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2684 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2685 array_verify (EV_A_ (W *)prepares, preparecnt);
2686#endif
1659 2687
2688#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2689 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2690 array_verify (EV_A_ (W *)checks, checkcnt);
2691#endif
1662 2692
1663# if 0 2693# if 0
2694#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2695 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2696 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2697#endif
1666# endif 2698# endif
1667#endif 2699#endif
1668} 2700}
1669 2701#endif
1670#endif /* multiplicity */
1671 2702
1672#if EV_MULTIPLICITY 2703#if EV_MULTIPLICITY
1673struct ev_loop * 2704struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2705#else
1676int 2706int
2707#endif
1677ev_default_loop (unsigned int flags) 2708ev_default_loop (unsigned int flags) EV_THROW
1678#endif
1679{ 2709{
1680 if (!ev_default_loop_ptr) 2710 if (!ev_default_loop_ptr)
1681 { 2711 {
1682#if EV_MULTIPLICITY 2712#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2713 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2714#else
1685 ev_default_loop_ptr = 1; 2715 ev_default_loop_ptr = 1;
1686#endif 2716#endif
1687 2717
1688 loop_init (EV_A_ flags); 2718 loop_init (EV_A_ flags);
1689 2719
1690 if (ev_backend (EV_A)) 2720 if (ev_backend (EV_A))
1691 { 2721 {
1692#ifndef _WIN32 2722#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2723 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2724 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2725 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2726 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2727#endif
… …
1702 2732
1703 return ev_default_loop_ptr; 2733 return ev_default_loop_ptr;
1704} 2734}
1705 2735
1706void 2736void
1707ev_default_destroy (void) 2737ev_loop_fork (EV_P) EV_THROW
1708{ 2738{
1709#if EV_MULTIPLICITY 2739 postfork = 1;
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */
1731} 2740}
1732 2741
1733/*****************************************************************************/ 2742/*****************************************************************************/
1734 2743
1735void 2744void
1736ev_invoke (EV_P_ void *w, int revents) 2745ev_invoke (EV_P_ void *w, int revents)
1737{ 2746{
1738 EV_CB_INVOKE ((W)w, revents); 2747 EV_CB_INVOKE ((W)w, revents);
1739} 2748}
1740 2749
1741inline_speed void 2750unsigned int
1742call_pending (EV_P) 2751ev_pending_count (EV_P) EV_THROW
1743{ 2752{
1744 int pri; 2753 int pri;
2754 unsigned int count = 0;
1745 2755
1746 for (pri = NUMPRI; pri--; ) 2756 for (pri = NUMPRI; pri--; )
2757 count += pendingcnt [pri];
2758
2759 return count;
2760}
2761
2762void noinline
2763ev_invoke_pending (EV_P)
2764{
2765 pendingpri = NUMPRI;
2766
2767 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2768 {
2769 --pendingpri;
2770
1747 while (pendingcnt [pri]) 2771 while (pendingcnt [pendingpri])
1748 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750
1751 if (expect_true (p->w))
1752 { 2772 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 2773 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1754 2774
1755 p->w->pending = 0; 2775 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2776 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
1758 } 2778 }
1759 } 2779 }
1760} 2780}
1761 2781
1762#if EV_IDLE_ENABLE 2782#if EV_IDLE_ENABLE
2783/* make idle watchers pending. this handles the "call-idle */
2784/* only when higher priorities are idle" logic */
1763inline_size void 2785inline_size void
1764idle_reify (EV_P) 2786idle_reify (EV_P)
1765{ 2787{
1766 if (expect_false (idleall)) 2788 if (expect_false (idleall))
1767 { 2789 {
… …
1780 } 2802 }
1781 } 2803 }
1782} 2804}
1783#endif 2805#endif
1784 2806
2807/* make timers pending */
1785inline_size void 2808inline_size void
1786timers_reify (EV_P) 2809timers_reify (EV_P)
1787{ 2810{
1788 EV_FREQUENT_CHECK; 2811 EV_FREQUENT_CHECK;
1789 2812
… …
1813 EV_FREQUENT_CHECK; 2836 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2837 feed_reverse (EV_A_ (W)w);
1815 } 2838 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2839 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2840
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2841 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2842 }
1820} 2843}
1821 2844
1822#if EV_PERIODIC_ENABLE 2845#if EV_PERIODIC_ENABLE
2846
2847static void noinline
2848periodic_recalc (EV_P_ ev_periodic *w)
2849{
2850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2852
2853 /* the above almost always errs on the low side */
2854 while (at <= ev_rt_now)
2855 {
2856 ev_tstamp nat = at + w->interval;
2857
2858 /* when resolution fails us, we use ev_rt_now */
2859 if (expect_false (nat == at))
2860 {
2861 at = ev_rt_now;
2862 break;
2863 }
2864
2865 at = nat;
2866 }
2867
2868 ev_at (w) = at;
2869}
2870
2871/* make periodics pending */
1823inline_size void 2872inline_size void
1824periodics_reify (EV_P) 2873periodics_reify (EV_P)
1825{ 2874{
1826 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
1827 2876
1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2877 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1829 { 2878 {
1830 int feed_count = 0;
1831
1832 do 2879 do
1833 { 2880 {
1834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2881 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1835 2882
1836 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2883 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2892 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2893 downheap (periodics, periodiccnt, HEAP0);
1847 } 2894 }
1848 else if (w->interval) 2895 else if (w->interval)
1849 { 2896 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2897 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 2898 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2899 downheap (periodics, periodiccnt, HEAP0);
1866 } 2900 }
1867 else 2901 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2902 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2908
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2909 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2910 }
1877} 2911}
1878 2912
2913/* simply recalculate all periodics */
2914/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2915static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2916periodics_reschedule (EV_P)
1881{ 2917{
1882 int i; 2918 int i;
1883 2919
1884 /* adjust periodics after time jump */ 2920 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2923 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2924
1889 if (w->reschedule_cb) 2925 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2926 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2927 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2928 periodic_recalc (EV_A_ w);
1893 2929
1894 ANHE_at_cache (periodics [i]); 2930 ANHE_at_cache (periodics [i]);
1895 } 2931 }
1896 2932
1897 reheap (periodics, periodiccnt); 2933 reheap (periodics, periodiccnt);
1898} 2934}
1899#endif 2935#endif
1900 2936
2937/* adjust all timers by a given offset */
2938static void noinline ecb_cold
2939timers_reschedule (EV_P_ ev_tstamp adjust)
2940{
2941 int i;
2942
2943 for (i = 0; i < timercnt; ++i)
2944 {
2945 ANHE *he = timers + i + HEAP0;
2946 ANHE_w (*he)->at += adjust;
2947 ANHE_at_cache (*he);
2948 }
2949}
2950
2951/* fetch new monotonic and realtime times from the kernel */
2952/* also detect if there was a timejump, and act accordingly */
1901inline_speed void 2953inline_speed void
1902time_update (EV_P_ ev_tstamp max_block) 2954time_update (EV_P_ ev_tstamp max_block)
1903{ 2955{
1904 int i;
1905
1906#if EV_USE_MONOTONIC 2956#if EV_USE_MONOTONIC
1907 if (expect_true (have_monotonic)) 2957 if (expect_true (have_monotonic))
1908 { 2958 {
2959 int i;
1909 ev_tstamp odiff = rtmn_diff; 2960 ev_tstamp odiff = rtmn_diff;
1910 2961
1911 mn_now = get_clock (); 2962 mn_now = get_clock ();
1912 2963
1913 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2964 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1929 * doesn't hurt either as we only do this on time-jumps or 2980 * doesn't hurt either as we only do this on time-jumps or
1930 * in the unlikely event of having been preempted here. 2981 * in the unlikely event of having been preempted here.
1931 */ 2982 */
1932 for (i = 4; --i; ) 2983 for (i = 4; --i; )
1933 { 2984 {
2985 ev_tstamp diff;
1934 rtmn_diff = ev_rt_now - mn_now; 2986 rtmn_diff = ev_rt_now - mn_now;
1935 2987
2988 diff = odiff - rtmn_diff;
2989
1936 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2990 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1937 return; /* all is well */ 2991 return; /* all is well */
1938 2992
1939 ev_rt_now = ev_time (); 2993 ev_rt_now = ev_time ();
1940 mn_now = get_clock (); 2994 mn_now = get_clock ();
1941 now_floor = mn_now; 2995 now_floor = mn_now;
1942 } 2996 }
1943 2997
2998 /* no timer adjustment, as the monotonic clock doesn't jump */
2999 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1944# if EV_PERIODIC_ENABLE 3000# if EV_PERIODIC_ENABLE
1945 periodics_reschedule (EV_A); 3001 periodics_reschedule (EV_A);
1946# endif 3002# endif
1947 /* no timer adjustment, as the monotonic clock doesn't jump */
1948 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1949 } 3003 }
1950 else 3004 else
1951#endif 3005#endif
1952 { 3006 {
1953 ev_rt_now = ev_time (); 3007 ev_rt_now = ev_time ();
1954 3008
1955 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3009 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1956 { 3010 {
3011 /* adjust timers. this is easy, as the offset is the same for all of them */
3012 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1957#if EV_PERIODIC_ENABLE 3013#if EV_PERIODIC_ENABLE
1958 periodics_reschedule (EV_A); 3014 periodics_reschedule (EV_A);
1959#endif 3015#endif
1960 /* adjust timers. this is easy, as the offset is the same for all of them */
1961 for (i = 0; i < timercnt; ++i)
1962 {
1963 ANHE *he = timers + i + HEAP0;
1964 ANHE_w (*he)->at += ev_rt_now - mn_now;
1965 ANHE_at_cache (*he);
1966 }
1967 } 3016 }
1968 3017
1969 mn_now = ev_rt_now; 3018 mn_now = ev_rt_now;
1970 } 3019 }
1971} 3020}
1972 3021
1973void 3022int
1974ev_ref (EV_P)
1975{
1976 ++activecnt;
1977}
1978
1979void
1980ev_unref (EV_P)
1981{
1982 --activecnt;
1983}
1984
1985void
1986ev_now_update (EV_P)
1987{
1988 time_update (EV_A_ 1e100);
1989}
1990
1991static int loop_done;
1992
1993void
1994ev_loop (EV_P_ int flags) 3023ev_run (EV_P_ int flags)
1995{ 3024{
3025#if EV_FEATURE_API
3026 ++loop_depth;
3027#endif
3028
3029 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3030
1996 loop_done = EVUNLOOP_CANCEL; 3031 loop_done = EVBREAK_CANCEL;
1997 3032
1998 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3033 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1999 3034
2000 do 3035 do
2001 { 3036 {
2002#if EV_VERIFY >= 2 3037#if EV_VERIFY >= 2
2003 ev_loop_verify (EV_A); 3038 ev_verify (EV_A);
2004#endif 3039#endif
2005 3040
2006#ifndef _WIN32 3041#ifndef _WIN32
2007 if (expect_false (curpid)) /* penalise the forking check even more */ 3042 if (expect_false (curpid)) /* penalise the forking check even more */
2008 if (expect_false (getpid () != curpid)) 3043 if (expect_false (getpid () != curpid))
… …
2016 /* we might have forked, so queue fork handlers */ 3051 /* we might have forked, so queue fork handlers */
2017 if (expect_false (postfork)) 3052 if (expect_false (postfork))
2018 if (forkcnt) 3053 if (forkcnt)
2019 { 3054 {
2020 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3055 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2021 call_pending (EV_A); 3056 EV_INVOKE_PENDING;
2022 } 3057 }
2023#endif 3058#endif
2024 3059
3060#if EV_PREPARE_ENABLE
2025 /* queue prepare watchers (and execute them) */ 3061 /* queue prepare watchers (and execute them) */
2026 if (expect_false (preparecnt)) 3062 if (expect_false (preparecnt))
2027 { 3063 {
2028 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3064 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2029 call_pending (EV_A); 3065 EV_INVOKE_PENDING;
2030 } 3066 }
3067#endif
3068
3069 if (expect_false (loop_done))
3070 break;
2031 3071
2032 /* we might have forked, so reify kernel state if necessary */ 3072 /* we might have forked, so reify kernel state if necessary */
2033 if (expect_false (postfork)) 3073 if (expect_false (postfork))
2034 loop_fork (EV_A); 3074 loop_fork (EV_A);
2035 3075
… …
2039 /* calculate blocking time */ 3079 /* calculate blocking time */
2040 { 3080 {
2041 ev_tstamp waittime = 0.; 3081 ev_tstamp waittime = 0.;
2042 ev_tstamp sleeptime = 0.; 3082 ev_tstamp sleeptime = 0.;
2043 3083
3084 /* remember old timestamp for io_blocktime calculation */
3085 ev_tstamp prev_mn_now = mn_now;
3086
3087 /* update time to cancel out callback processing overhead */
3088 time_update (EV_A_ 1e100);
3089
3090 /* from now on, we want a pipe-wake-up */
3091 pipe_write_wanted = 1;
3092
3093 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3094
2044 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3095 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2045 { 3096 {
2046 /* update time to cancel out callback processing overhead */ 3097 waittime = MAX_BLOCKTIME;
2047 time_update (EV_A_ 1e100);
2048 3098
2049 if (timercnt) 3099 if (timercnt)
2050 { 3100 {
2051 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2052 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2053 } 3103 }
2054 3104
2055#if EV_PERIODIC_ENABLE 3105#if EV_PERIODIC_ENABLE
2056 if (periodiccnt) 3106 if (periodiccnt)
2057 { 3107 {
2058 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3108 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2059 if (waittime > to) waittime = to; 3109 if (waittime > to) waittime = to;
2060 } 3110 }
2061#endif 3111#endif
2062 3112
3113 /* don't let timeouts decrease the waittime below timeout_blocktime */
2063 if (expect_false (waittime < timeout_blocktime)) 3114 if (expect_false (waittime < timeout_blocktime))
2064 waittime = timeout_blocktime; 3115 waittime = timeout_blocktime;
2065 3116
2066 sleeptime = waittime - backend_fudge; 3117 /* at this point, we NEED to wait, so we have to ensure */
3118 /* to pass a minimum nonzero value to the backend */
3119 if (expect_false (waittime < backend_mintime))
3120 waittime = backend_mintime;
2067 3121
3122 /* extra check because io_blocktime is commonly 0 */
2068 if (expect_true (sleeptime > io_blocktime)) 3123 if (expect_false (io_blocktime))
2069 sleeptime = io_blocktime;
2070
2071 if (sleeptime)
2072 { 3124 {
3125 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3126
3127 if (sleeptime > waittime - backend_mintime)
3128 sleeptime = waittime - backend_mintime;
3129
3130 if (expect_true (sleeptime > 0.))
3131 {
2073 ev_sleep (sleeptime); 3132 ev_sleep (sleeptime);
2074 waittime -= sleeptime; 3133 waittime -= sleeptime;
3134 }
2075 } 3135 }
2076 } 3136 }
2077 3137
3138#if EV_FEATURE_API
2078 ++loop_count; 3139 ++loop_count;
3140#endif
3141 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2079 backend_poll (EV_A_ waittime); 3142 backend_poll (EV_A_ waittime);
3143 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3144
3145 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3146
3147 ECB_MEMORY_FENCE_ACQUIRE;
3148 if (pipe_write_skipped)
3149 {
3150 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3151 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3152 }
3153
2080 3154
2081 /* update ev_rt_now, do magic */ 3155 /* update ev_rt_now, do magic */
2082 time_update (EV_A_ waittime + sleeptime); 3156 time_update (EV_A_ waittime + sleeptime);
2083 } 3157 }
2084 3158
… …
2091#if EV_IDLE_ENABLE 3165#if EV_IDLE_ENABLE
2092 /* queue idle watchers unless other events are pending */ 3166 /* queue idle watchers unless other events are pending */
2093 idle_reify (EV_A); 3167 idle_reify (EV_A);
2094#endif 3168#endif
2095 3169
3170#if EV_CHECK_ENABLE
2096 /* queue check watchers, to be executed first */ 3171 /* queue check watchers, to be executed first */
2097 if (expect_false (checkcnt)) 3172 if (expect_false (checkcnt))
2098 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3173 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3174#endif
2099 3175
2100 call_pending (EV_A); 3176 EV_INVOKE_PENDING;
2101 } 3177 }
2102 while (expect_true ( 3178 while (expect_true (
2103 activecnt 3179 activecnt
2104 && !loop_done 3180 && !loop_done
2105 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3181 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2106 )); 3182 ));
2107 3183
2108 if (loop_done == EVUNLOOP_ONE) 3184 if (loop_done == EVBREAK_ONE)
2109 loop_done = EVUNLOOP_CANCEL; 3185 loop_done = EVBREAK_CANCEL;
3186
3187#if EV_FEATURE_API
3188 --loop_depth;
3189#endif
3190
3191 return activecnt;
2110} 3192}
2111 3193
2112void 3194void
2113ev_unloop (EV_P_ int how) 3195ev_break (EV_P_ int how) EV_THROW
2114{ 3196{
2115 loop_done = how; 3197 loop_done = how;
2116} 3198}
2117 3199
3200void
3201ev_ref (EV_P) EV_THROW
3202{
3203 ++activecnt;
3204}
3205
3206void
3207ev_unref (EV_P) EV_THROW
3208{
3209 --activecnt;
3210}
3211
3212void
3213ev_now_update (EV_P) EV_THROW
3214{
3215 time_update (EV_A_ 1e100);
3216}
3217
3218void
3219ev_suspend (EV_P) EV_THROW
3220{
3221 ev_now_update (EV_A);
3222}
3223
3224void
3225ev_resume (EV_P) EV_THROW
3226{
3227 ev_tstamp mn_prev = mn_now;
3228
3229 ev_now_update (EV_A);
3230 timers_reschedule (EV_A_ mn_now - mn_prev);
3231#if EV_PERIODIC_ENABLE
3232 /* TODO: really do this? */
3233 periodics_reschedule (EV_A);
3234#endif
3235}
3236
2118/*****************************************************************************/ 3237/*****************************************************************************/
3238/* singly-linked list management, used when the expected list length is short */
2119 3239
2120inline_size void 3240inline_size void
2121wlist_add (WL *head, WL elem) 3241wlist_add (WL *head, WL elem)
2122{ 3242{
2123 elem->next = *head; 3243 elem->next = *head;
… …
2127inline_size void 3247inline_size void
2128wlist_del (WL *head, WL elem) 3248wlist_del (WL *head, WL elem)
2129{ 3249{
2130 while (*head) 3250 while (*head)
2131 { 3251 {
2132 if (*head == elem) 3252 if (expect_true (*head == elem))
2133 { 3253 {
2134 *head = elem->next; 3254 *head = elem->next;
2135 return; 3255 break;
2136 } 3256 }
2137 3257
2138 head = &(*head)->next; 3258 head = &(*head)->next;
2139 } 3259 }
2140} 3260}
2141 3261
3262/* internal, faster, version of ev_clear_pending */
2142inline_speed void 3263inline_speed void
2143clear_pending (EV_P_ W w) 3264clear_pending (EV_P_ W w)
2144{ 3265{
2145 if (w->pending) 3266 if (w->pending)
2146 { 3267 {
2147 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3268 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2148 w->pending = 0; 3269 w->pending = 0;
2149 } 3270 }
2150} 3271}
2151 3272
2152int 3273int
2153ev_clear_pending (EV_P_ void *w) 3274ev_clear_pending (EV_P_ void *w) EV_THROW
2154{ 3275{
2155 W w_ = (W)w; 3276 W w_ = (W)w;
2156 int pending = w_->pending; 3277 int pending = w_->pending;
2157 3278
2158 if (expect_true (pending)) 3279 if (expect_true (pending))
2159 { 3280 {
2160 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3281 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3282 p->w = (W)&pending_w;
2161 w_->pending = 0; 3283 w_->pending = 0;
2162 p->w = 0;
2163 return p->events; 3284 return p->events;
2164 } 3285 }
2165 else 3286 else
2166 return 0; 3287 return 0;
2167} 3288}
2168 3289
2169inline_size void 3290inline_size void
2170pri_adjust (EV_P_ W w) 3291pri_adjust (EV_P_ W w)
2171{ 3292{
2172 int pri = w->priority; 3293 int pri = ev_priority (w);
2173 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3294 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2174 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3295 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2175 w->priority = pri; 3296 ev_set_priority (w, pri);
2176} 3297}
2177 3298
2178inline_speed void 3299inline_speed void
2179ev_start (EV_P_ W w, int active) 3300ev_start (EV_P_ W w, int active)
2180{ 3301{
… …
2191} 3312}
2192 3313
2193/*****************************************************************************/ 3314/*****************************************************************************/
2194 3315
2195void noinline 3316void noinline
2196ev_io_start (EV_P_ ev_io *w) 3317ev_io_start (EV_P_ ev_io *w) EV_THROW
2197{ 3318{
2198 int fd = w->fd; 3319 int fd = w->fd;
2199 3320
2200 if (expect_false (ev_is_active (w))) 3321 if (expect_false (ev_is_active (w)))
2201 return; 3322 return;
2202 3323
2203 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3324 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2204 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3325 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2205 3326
2206 EV_FREQUENT_CHECK; 3327 EV_FREQUENT_CHECK;
2207 3328
2208 ev_start (EV_A_ (W)w, 1); 3329 ev_start (EV_A_ (W)w, 1);
2209 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3330 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2210 wlist_add (&anfds[fd].head, (WL)w); 3331 wlist_add (&anfds[fd].head, (WL)w);
2211 3332
3333 /* common bug, apparently */
3334 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3335
2212 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3336 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2213 w->events &= ~EV__IOFDSET; 3337 w->events &= ~EV__IOFDSET;
2214 3338
2215 EV_FREQUENT_CHECK; 3339 EV_FREQUENT_CHECK;
2216} 3340}
2217 3341
2218void noinline 3342void noinline
2219ev_io_stop (EV_P_ ev_io *w) 3343ev_io_stop (EV_P_ ev_io *w) EV_THROW
2220{ 3344{
2221 clear_pending (EV_A_ (W)w); 3345 clear_pending (EV_A_ (W)w);
2222 if (expect_false (!ev_is_active (w))) 3346 if (expect_false (!ev_is_active (w)))
2223 return; 3347 return;
2224 3348
… …
2227 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2228 3352
2229 wlist_del (&anfds[w->fd].head, (WL)w); 3353 wlist_del (&anfds[w->fd].head, (WL)w);
2230 ev_stop (EV_A_ (W)w); 3354 ev_stop (EV_A_ (W)w);
2231 3355
2232 fd_change (EV_A_ w->fd, 1); 3356 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2233 3357
2234 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2235} 3359}
2236 3360
2237void noinline 3361void noinline
2238ev_timer_start (EV_P_ ev_timer *w) 3362ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2239{ 3363{
2240 if (expect_false (ev_is_active (w))) 3364 if (expect_false (ev_is_active (w)))
2241 return; 3365 return;
2242 3366
2243 ev_at (w) += mn_now; 3367 ev_at (w) += mn_now;
… …
2257 3381
2258 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3382 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2259} 3383}
2260 3384
2261void noinline 3385void noinline
2262ev_timer_stop (EV_P_ ev_timer *w) 3386ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2263{ 3387{
2264 clear_pending (EV_A_ (W)w); 3388 clear_pending (EV_A_ (W)w);
2265 if (expect_false (!ev_is_active (w))) 3389 if (expect_false (!ev_is_active (w)))
2266 return; 3390 return;
2267 3391
… …
2279 timers [active] = timers [timercnt + HEAP0]; 3403 timers [active] = timers [timercnt + HEAP0];
2280 adjustheap (timers, timercnt, active); 3404 adjustheap (timers, timercnt, active);
2281 } 3405 }
2282 } 3406 }
2283 3407
2284 EV_FREQUENT_CHECK;
2285
2286 ev_at (w) -= mn_now; 3408 ev_at (w) -= mn_now;
2287 3409
2288 ev_stop (EV_A_ (W)w); 3410 ev_stop (EV_A_ (W)w);
3411
3412 EV_FREQUENT_CHECK;
2289} 3413}
2290 3414
2291void noinline 3415void noinline
2292ev_timer_again (EV_P_ ev_timer *w) 3416ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2293{ 3417{
2294 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
3419
3420 clear_pending (EV_A_ (W)w);
2295 3421
2296 if (ev_is_active (w)) 3422 if (ev_is_active (w))
2297 { 3423 {
2298 if (w->repeat) 3424 if (w->repeat)
2299 { 3425 {
… …
2311 } 3437 }
2312 3438
2313 EV_FREQUENT_CHECK; 3439 EV_FREQUENT_CHECK;
2314} 3440}
2315 3441
3442ev_tstamp
3443ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3444{
3445 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3446}
3447
2316#if EV_PERIODIC_ENABLE 3448#if EV_PERIODIC_ENABLE
2317void noinline 3449void noinline
2318ev_periodic_start (EV_P_ ev_periodic *w) 3450ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2319{ 3451{
2320 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2321 return; 3453 return;
2322 3454
2323 if (w->reschedule_cb) 3455 if (w->reschedule_cb)
2324 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3456 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2325 else if (w->interval) 3457 else if (w->interval)
2326 { 3458 {
2327 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3459 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2328 /* this formula differs from the one in periodic_reify because we do not always round up */ 3460 periodic_recalc (EV_A_ w);
2329 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2330 } 3461 }
2331 else 3462 else
2332 ev_at (w) = w->offset; 3463 ev_at (w) = w->offset;
2333 3464
2334 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
… …
2344 3475
2345 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3476 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2346} 3477}
2347 3478
2348void noinline 3479void noinline
2349ev_periodic_stop (EV_P_ ev_periodic *w) 3480ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2350{ 3481{
2351 clear_pending (EV_A_ (W)w); 3482 clear_pending (EV_A_ (W)w);
2352 if (expect_false (!ev_is_active (w))) 3483 if (expect_false (!ev_is_active (w)))
2353 return; 3484 return;
2354 3485
… …
2366 periodics [active] = periodics [periodiccnt + HEAP0]; 3497 periodics [active] = periodics [periodiccnt + HEAP0];
2367 adjustheap (periodics, periodiccnt, active); 3498 adjustheap (periodics, periodiccnt, active);
2368 } 3499 }
2369 } 3500 }
2370 3501
2371 EV_FREQUENT_CHECK;
2372
2373 ev_stop (EV_A_ (W)w); 3502 ev_stop (EV_A_ (W)w);
3503
3504 EV_FREQUENT_CHECK;
2374} 3505}
2375 3506
2376void noinline 3507void noinline
2377ev_periodic_again (EV_P_ ev_periodic *w) 3508ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2378{ 3509{
2379 /* TODO: use adjustheap and recalculation */ 3510 /* TODO: use adjustheap and recalculation */
2380 ev_periodic_stop (EV_A_ w); 3511 ev_periodic_stop (EV_A_ w);
2381 ev_periodic_start (EV_A_ w); 3512 ev_periodic_start (EV_A_ w);
2382} 3513}
… …
2384 3515
2385#ifndef SA_RESTART 3516#ifndef SA_RESTART
2386# define SA_RESTART 0 3517# define SA_RESTART 0
2387#endif 3518#endif
2388 3519
3520#if EV_SIGNAL_ENABLE
3521
2389void noinline 3522void noinline
2390ev_signal_start (EV_P_ ev_signal *w) 3523ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2391{ 3524{
2392#if EV_MULTIPLICITY
2393 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2394#endif
2395 if (expect_false (ev_is_active (w))) 3525 if (expect_false (ev_is_active (w)))
2396 return; 3526 return;
2397 3527
2398 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3528 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2399 3529
2400 evpipe_init (EV_A); 3530#if EV_MULTIPLICITY
3531 assert (("libev: a signal must not be attached to two different loops",
3532 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2401 3533
2402 EV_FREQUENT_CHECK; 3534 signals [w->signum - 1].loop = EV_A;
3535#endif
2403 3536
3537 EV_FREQUENT_CHECK;
3538
3539#if EV_USE_SIGNALFD
3540 if (sigfd == -2)
2404 { 3541 {
2405#ifndef _WIN32 3542 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2406 sigset_t full, prev; 3543 if (sigfd < 0 && errno == EINVAL)
2407 sigfillset (&full); 3544 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2408 sigprocmask (SIG_SETMASK, &full, &prev);
2409#endif
2410 3545
2411 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3546 if (sigfd >= 0)
3547 {
3548 fd_intern (sigfd); /* doing it twice will not hurt */
2412 3549
2413#ifndef _WIN32 3550 sigemptyset (&sigfd_set);
2414 sigprocmask (SIG_SETMASK, &prev, 0); 3551
2415#endif 3552 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3553 ev_set_priority (&sigfd_w, EV_MAXPRI);
3554 ev_io_start (EV_A_ &sigfd_w);
3555 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3556 }
2416 } 3557 }
3558
3559 if (sigfd >= 0)
3560 {
3561 /* TODO: check .head */
3562 sigaddset (&sigfd_set, w->signum);
3563 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3564
3565 signalfd (sigfd, &sigfd_set, 0);
3566 }
3567#endif
2417 3568
2418 ev_start (EV_A_ (W)w, 1); 3569 ev_start (EV_A_ (W)w, 1);
2419 wlist_add (&signals [w->signum - 1].head, (WL)w); 3570 wlist_add (&signals [w->signum - 1].head, (WL)w);
2420 3571
2421 if (!((WL)w)->next) 3572 if (!((WL)w)->next)
3573# if EV_USE_SIGNALFD
3574 if (sigfd < 0) /*TODO*/
3575# endif
2422 { 3576 {
2423#if _WIN32 3577# ifdef _WIN32
3578 evpipe_init (EV_A);
3579
2424 signal (w->signum, ev_sighandler); 3580 signal (w->signum, ev_sighandler);
2425#else 3581# else
2426 struct sigaction sa; 3582 struct sigaction sa;
3583
3584 evpipe_init (EV_A);
3585
2427 sa.sa_handler = ev_sighandler; 3586 sa.sa_handler = ev_sighandler;
2428 sigfillset (&sa.sa_mask); 3587 sigfillset (&sa.sa_mask);
2429 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3588 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2430 sigaction (w->signum, &sa, 0); 3589 sigaction (w->signum, &sa, 0);
3590
3591 if (origflags & EVFLAG_NOSIGMASK)
3592 {
3593 sigemptyset (&sa.sa_mask);
3594 sigaddset (&sa.sa_mask, w->signum);
3595 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3596 }
2431#endif 3597#endif
2432 } 3598 }
2433 3599
2434 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2435} 3601}
2436 3602
2437void noinline 3603void noinline
2438ev_signal_stop (EV_P_ ev_signal *w) 3604ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2439{ 3605{
2440 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2441 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2442 return; 3608 return;
2443 3609
… …
2445 3611
2446 wlist_del (&signals [w->signum - 1].head, (WL)w); 3612 wlist_del (&signals [w->signum - 1].head, (WL)w);
2447 ev_stop (EV_A_ (W)w); 3613 ev_stop (EV_A_ (W)w);
2448 3614
2449 if (!signals [w->signum - 1].head) 3615 if (!signals [w->signum - 1].head)
3616 {
3617#if EV_MULTIPLICITY
3618 signals [w->signum - 1].loop = 0; /* unattach from signal */
3619#endif
3620#if EV_USE_SIGNALFD
3621 if (sigfd >= 0)
3622 {
3623 sigset_t ss;
3624
3625 sigemptyset (&ss);
3626 sigaddset (&ss, w->signum);
3627 sigdelset (&sigfd_set, w->signum);
3628
3629 signalfd (sigfd, &sigfd_set, 0);
3630 sigprocmask (SIG_UNBLOCK, &ss, 0);
3631 }
3632 else
3633#endif
2450 signal (w->signum, SIG_DFL); 3634 signal (w->signum, SIG_DFL);
3635 }
2451 3636
2452 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2453} 3638}
3639
3640#endif
3641
3642#if EV_CHILD_ENABLE
2454 3643
2455void 3644void
2456ev_child_start (EV_P_ ev_child *w) 3645ev_child_start (EV_P_ ev_child *w) EV_THROW
2457{ 3646{
2458#if EV_MULTIPLICITY 3647#if EV_MULTIPLICITY
2459 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3648 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2460#endif 3649#endif
2461 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2462 return; 3651 return;
2463 3652
2464 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
2465 3654
2466 ev_start (EV_A_ (W)w, 1); 3655 ev_start (EV_A_ (W)w, 1);
2467 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3656 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2468 3657
2469 EV_FREQUENT_CHECK; 3658 EV_FREQUENT_CHECK;
2470} 3659}
2471 3660
2472void 3661void
2473ev_child_stop (EV_P_ ev_child *w) 3662ev_child_stop (EV_P_ ev_child *w) EV_THROW
2474{ 3663{
2475 clear_pending (EV_A_ (W)w); 3664 clear_pending (EV_A_ (W)w);
2476 if (expect_false (!ev_is_active (w))) 3665 if (expect_false (!ev_is_active (w)))
2477 return; 3666 return;
2478 3667
2479 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2480 3669
2481 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3670 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2482 ev_stop (EV_A_ (W)w); 3671 ev_stop (EV_A_ (W)w);
2483 3672
2484 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
2485} 3674}
3675
3676#endif
2486 3677
2487#if EV_STAT_ENABLE 3678#if EV_STAT_ENABLE
2488 3679
2489# ifdef _WIN32 3680# ifdef _WIN32
2490# undef lstat 3681# undef lstat
… …
2496#define MIN_STAT_INTERVAL 0.1074891 3687#define MIN_STAT_INTERVAL 0.1074891
2497 3688
2498static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3689static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2499 3690
2500#if EV_USE_INOTIFY 3691#if EV_USE_INOTIFY
2501# define EV_INOTIFY_BUFSIZE 8192 3692
3693/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3694# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2502 3695
2503static void noinline 3696static void noinline
2504infy_add (EV_P_ ev_stat *w) 3697infy_add (EV_P_ ev_stat *w)
2505{ 3698{
2506 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); 3699 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);
2507 3700
2508 if (w->wd < 0) 3701 if (w->wd >= 0)
3702 {
3703 struct statfs sfs;
3704
3705 /* now local changes will be tracked by inotify, but remote changes won't */
3706 /* unless the filesystem is known to be local, we therefore still poll */
3707 /* also do poll on <2.6.25, but with normal frequency */
3708
3709 if (!fs_2625)
3710 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3711 else if (!statfs (w->path, &sfs)
3712 && (sfs.f_type == 0x1373 /* devfs */
3713 || sfs.f_type == 0xEF53 /* ext2/3 */
3714 || sfs.f_type == 0x3153464a /* jfs */
3715 || sfs.f_type == 0x52654973 /* reiser3 */
3716 || sfs.f_type == 0x01021994 /* tempfs */
3717 || sfs.f_type == 0x58465342 /* xfs */))
3718 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3719 else
3720 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2509 { 3721 }
3722 else
3723 {
3724 /* can't use inotify, continue to stat */
2510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3725 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2511 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2512 3726
2513 /* monitor some parent directory for speedup hints */ 3727 /* if path is not there, monitor some parent directory for speedup hints */
2514 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3728 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2515 /* but an efficiency issue only */ 3729 /* but an efficiency issue only */
2516 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3730 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2517 { 3731 {
2518 char path [4096]; 3732 char path [4096];
… …
2528 if (!pend || pend == path) 3742 if (!pend || pend == path)
2529 break; 3743 break;
2530 3744
2531 *pend = 0; 3745 *pend = 0;
2532 w->wd = inotify_add_watch (fs_fd, path, mask); 3746 w->wd = inotify_add_watch (fs_fd, path, mask);
2533 } 3747 }
2534 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3748 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2535 } 3749 }
2536 } 3750 }
2537 3751
2538 if (w->wd >= 0) 3752 if (w->wd >= 0)
2539 {
2540 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3753 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2541 3754
2542 /* now local changes will be tracked by inotify, but remote changes won't */ 3755 /* now re-arm timer, if required */
2543 /* unless the filesystem it known to be local, we therefore still poll */ 3756 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2544 /* also do poll on <2.6.25, but with normal frequency */
2545 struct statfs sfs;
2546
2547 if (fs_2625 && !statfs (w->path, &sfs))
2548 if (sfs.f_type == 0x1373 /* devfs */
2549 || sfs.f_type == 0xEF53 /* ext2/3 */
2550 || sfs.f_type == 0x3153464a /* jfs */
2551 || sfs.f_type == 0x52654973 /* reiser3 */
2552 || sfs.f_type == 0x01021994 /* tempfs */
2553 || sfs.f_type == 0x58465342 /* xfs */)
2554 return;
2555
2556 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2557 ev_timer_again (EV_A_ &w->timer); 3757 ev_timer_again (EV_A_ &w->timer);
2558 } 3758 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2559} 3759}
2560 3760
2561static void noinline 3761static void noinline
2562infy_del (EV_P_ ev_stat *w) 3762infy_del (EV_P_ ev_stat *w)
2563{ 3763{
… …
2566 3766
2567 if (wd < 0) 3767 if (wd < 0)
2568 return; 3768 return;
2569 3769
2570 w->wd = -2; 3770 w->wd = -2;
2571 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3771 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2572 wlist_del (&fs_hash [slot].head, (WL)w); 3772 wlist_del (&fs_hash [slot].head, (WL)w);
2573 3773
2574 /* remove this watcher, if others are watching it, they will rearm */ 3774 /* remove this watcher, if others are watching it, they will rearm */
2575 inotify_rm_watch (fs_fd, wd); 3775 inotify_rm_watch (fs_fd, wd);
2576} 3776}
… …
2578static void noinline 3778static void noinline
2579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3779infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2580{ 3780{
2581 if (slot < 0) 3781 if (slot < 0)
2582 /* overflow, need to check for all hash slots */ 3782 /* overflow, need to check for all hash slots */
2583 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3783 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2584 infy_wd (EV_A_ slot, wd, ev); 3784 infy_wd (EV_A_ slot, wd, ev);
2585 else 3785 else
2586 { 3786 {
2587 WL w_; 3787 WL w_;
2588 3788
2589 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3789 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2590 { 3790 {
2591 ev_stat *w = (ev_stat *)w_; 3791 ev_stat *w = (ev_stat *)w_;
2592 w_ = w_->next; /* lets us remove this watcher and all before it */ 3792 w_ = w_->next; /* lets us remove this watcher and all before it */
2593 3793
2594 if (w->wd == wd || wd == -1) 3794 if (w->wd == wd || wd == -1)
2595 { 3795 {
2596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3796 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2597 { 3797 {
2598 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3798 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2599 w->wd = -1; 3799 w->wd = -1;
2600 infy_add (EV_A_ w); /* re-add, no matter what */ 3800 infy_add (EV_A_ w); /* re-add, no matter what */
2601 } 3801 }
2602 3802
2603 stat_timer_cb (EV_A_ &w->timer, 0); 3803 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2608 3808
2609static void 3809static void
2610infy_cb (EV_P_ ev_io *w, int revents) 3810infy_cb (EV_P_ ev_io *w, int revents)
2611{ 3811{
2612 char buf [EV_INOTIFY_BUFSIZE]; 3812 char buf [EV_INOTIFY_BUFSIZE];
2613 struct inotify_event *ev = (struct inotify_event *)buf;
2614 int ofs; 3813 int ofs;
2615 int len = read (fs_fd, buf, sizeof (buf)); 3814 int len = read (fs_fd, buf, sizeof (buf));
2616 3815
2617 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3816 for (ofs = 0; ofs < len; )
3817 {
3818 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2618 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3819 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3820 ofs += sizeof (struct inotify_event) + ev->len;
3821 }
2619} 3822}
2620 3823
2621inline_size void 3824inline_size void ecb_cold
2622check_2625 (EV_P) 3825ev_check_2625 (EV_P)
2623{ 3826{
2624 /* kernels < 2.6.25 are borked 3827 /* kernels < 2.6.25 are borked
2625 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3828 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2626 */ 3829 */
2627 struct utsname buf; 3830 if (ev_linux_version () < 0x020619)
2628 int major, minor, micro;
2629
2630 if (uname (&buf))
2631 return; 3831 return;
2632 3832
2633 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2634 return;
2635
2636 if (major < 2
2637 || (major == 2 && minor < 6)
2638 || (major == 2 && minor == 6 && micro < 25))
2639 return;
2640
2641 fs_2625 = 1; 3833 fs_2625 = 1;
3834}
3835
3836inline_size int
3837infy_newfd (void)
3838{
3839#if defined IN_CLOEXEC && defined IN_NONBLOCK
3840 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3841 if (fd >= 0)
3842 return fd;
3843#endif
3844 return inotify_init ();
2642} 3845}
2643 3846
2644inline_size void 3847inline_size void
2645infy_init (EV_P) 3848infy_init (EV_P)
2646{ 3849{
2647 if (fs_fd != -2) 3850 if (fs_fd != -2)
2648 return; 3851 return;
2649 3852
2650 fs_fd = -1; 3853 fs_fd = -1;
2651 3854
2652 check_2625 (EV_A); 3855 ev_check_2625 (EV_A);
2653 3856
2654 fs_fd = inotify_init (); 3857 fs_fd = infy_newfd ();
2655 3858
2656 if (fs_fd >= 0) 3859 if (fs_fd >= 0)
2657 { 3860 {
3861 fd_intern (fs_fd);
2658 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3862 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2659 ev_set_priority (&fs_w, EV_MAXPRI); 3863 ev_set_priority (&fs_w, EV_MAXPRI);
2660 ev_io_start (EV_A_ &fs_w); 3864 ev_io_start (EV_A_ &fs_w);
3865 ev_unref (EV_A);
2661 } 3866 }
2662} 3867}
2663 3868
2664inline_size void 3869inline_size void
2665infy_fork (EV_P) 3870infy_fork (EV_P)
… …
2667 int slot; 3872 int slot;
2668 3873
2669 if (fs_fd < 0) 3874 if (fs_fd < 0)
2670 return; 3875 return;
2671 3876
3877 ev_ref (EV_A);
3878 ev_io_stop (EV_A_ &fs_w);
2672 close (fs_fd); 3879 close (fs_fd);
2673 fs_fd = inotify_init (); 3880 fs_fd = infy_newfd ();
2674 3881
3882 if (fs_fd >= 0)
3883 {
3884 fd_intern (fs_fd);
3885 ev_io_set (&fs_w, fs_fd, EV_READ);
3886 ev_io_start (EV_A_ &fs_w);
3887 ev_unref (EV_A);
3888 }
3889
2675 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3890 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2676 { 3891 {
2677 WL w_ = fs_hash [slot].head; 3892 WL w_ = fs_hash [slot].head;
2678 fs_hash [slot].head = 0; 3893 fs_hash [slot].head = 0;
2679 3894
2680 while (w_) 3895 while (w_)
… …
2685 w->wd = -1; 3900 w->wd = -1;
2686 3901
2687 if (fs_fd >= 0) 3902 if (fs_fd >= 0)
2688 infy_add (EV_A_ w); /* re-add, no matter what */ 3903 infy_add (EV_A_ w); /* re-add, no matter what */
2689 else 3904 else
3905 {
3906 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3907 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2690 ev_timer_again (EV_A_ &w->timer); 3908 ev_timer_again (EV_A_ &w->timer);
3909 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3910 }
2691 } 3911 }
2692 } 3912 }
2693} 3913}
2694 3914
2695#endif 3915#endif
… …
2699#else 3919#else
2700# define EV_LSTAT(p,b) lstat (p, b) 3920# define EV_LSTAT(p,b) lstat (p, b)
2701#endif 3921#endif
2702 3922
2703void 3923void
2704ev_stat_stat (EV_P_ ev_stat *w) 3924ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2705{ 3925{
2706 if (lstat (w->path, &w->attr) < 0) 3926 if (lstat (w->path, &w->attr) < 0)
2707 w->attr.st_nlink = 0; 3927 w->attr.st_nlink = 0;
2708 else if (!w->attr.st_nlink) 3928 else if (!w->attr.st_nlink)
2709 w->attr.st_nlink = 1; 3929 w->attr.st_nlink = 1;
… …
2712static void noinline 3932static void noinline
2713stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3933stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2714{ 3934{
2715 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3935 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2716 3936
2717 /* we copy this here each the time so that */ 3937 ev_statdata prev = w->attr;
2718 /* prev has the old value when the callback gets invoked */
2719 w->prev = w->attr;
2720 ev_stat_stat (EV_A_ w); 3938 ev_stat_stat (EV_A_ w);
2721 3939
2722 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3940 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2723 if ( 3941 if (
2724 w->prev.st_dev != w->attr.st_dev 3942 prev.st_dev != w->attr.st_dev
2725 || w->prev.st_ino != w->attr.st_ino 3943 || prev.st_ino != w->attr.st_ino
2726 || w->prev.st_mode != w->attr.st_mode 3944 || prev.st_mode != w->attr.st_mode
2727 || w->prev.st_nlink != w->attr.st_nlink 3945 || prev.st_nlink != w->attr.st_nlink
2728 || w->prev.st_uid != w->attr.st_uid 3946 || prev.st_uid != w->attr.st_uid
2729 || w->prev.st_gid != w->attr.st_gid 3947 || prev.st_gid != w->attr.st_gid
2730 || w->prev.st_rdev != w->attr.st_rdev 3948 || prev.st_rdev != w->attr.st_rdev
2731 || w->prev.st_size != w->attr.st_size 3949 || prev.st_size != w->attr.st_size
2732 || w->prev.st_atime != w->attr.st_atime 3950 || prev.st_atime != w->attr.st_atime
2733 || w->prev.st_mtime != w->attr.st_mtime 3951 || prev.st_mtime != w->attr.st_mtime
2734 || w->prev.st_ctime != w->attr.st_ctime 3952 || prev.st_ctime != w->attr.st_ctime
2735 ) { 3953 ) {
3954 /* we only update w->prev on actual differences */
3955 /* in case we test more often than invoke the callback, */
3956 /* to ensure that prev is always different to attr */
3957 w->prev = prev;
3958
2736 #if EV_USE_INOTIFY 3959 #if EV_USE_INOTIFY
2737 if (fs_fd >= 0) 3960 if (fs_fd >= 0)
2738 { 3961 {
2739 infy_del (EV_A_ w); 3962 infy_del (EV_A_ w);
2740 infy_add (EV_A_ w); 3963 infy_add (EV_A_ w);
… …
2745 ev_feed_event (EV_A_ w, EV_STAT); 3968 ev_feed_event (EV_A_ w, EV_STAT);
2746 } 3969 }
2747} 3970}
2748 3971
2749void 3972void
2750ev_stat_start (EV_P_ ev_stat *w) 3973ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2751{ 3974{
2752 if (expect_false (ev_is_active (w))) 3975 if (expect_false (ev_is_active (w)))
2753 return; 3976 return;
2754 3977
2755 ev_stat_stat (EV_A_ w); 3978 ev_stat_stat (EV_A_ w);
… …
2765 3988
2766 if (fs_fd >= 0) 3989 if (fs_fd >= 0)
2767 infy_add (EV_A_ w); 3990 infy_add (EV_A_ w);
2768 else 3991 else
2769#endif 3992#endif
3993 {
2770 ev_timer_again (EV_A_ &w->timer); 3994 ev_timer_again (EV_A_ &w->timer);
3995 ev_unref (EV_A);
3996 }
2771 3997
2772 ev_start (EV_A_ (W)w, 1); 3998 ev_start (EV_A_ (W)w, 1);
2773 3999
2774 EV_FREQUENT_CHECK; 4000 EV_FREQUENT_CHECK;
2775} 4001}
2776 4002
2777void 4003void
2778ev_stat_stop (EV_P_ ev_stat *w) 4004ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2779{ 4005{
2780 clear_pending (EV_A_ (W)w); 4006 clear_pending (EV_A_ (W)w);
2781 if (expect_false (!ev_is_active (w))) 4007 if (expect_false (!ev_is_active (w)))
2782 return; 4008 return;
2783 4009
2784 EV_FREQUENT_CHECK; 4010 EV_FREQUENT_CHECK;
2785 4011
2786#if EV_USE_INOTIFY 4012#if EV_USE_INOTIFY
2787 infy_del (EV_A_ w); 4013 infy_del (EV_A_ w);
2788#endif 4014#endif
4015
4016 if (ev_is_active (&w->timer))
4017 {
4018 ev_ref (EV_A);
2789 ev_timer_stop (EV_A_ &w->timer); 4019 ev_timer_stop (EV_A_ &w->timer);
4020 }
2790 4021
2791 ev_stop (EV_A_ (W)w); 4022 ev_stop (EV_A_ (W)w);
2792 4023
2793 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
2794} 4025}
2795#endif 4026#endif
2796 4027
2797#if EV_IDLE_ENABLE 4028#if EV_IDLE_ENABLE
2798void 4029void
2799ev_idle_start (EV_P_ ev_idle *w) 4030ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2800{ 4031{
2801 if (expect_false (ev_is_active (w))) 4032 if (expect_false (ev_is_active (w)))
2802 return; 4033 return;
2803 4034
2804 pri_adjust (EV_A_ (W)w); 4035 pri_adjust (EV_A_ (W)w);
… …
2817 4048
2818 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
2819} 4050}
2820 4051
2821void 4052void
2822ev_idle_stop (EV_P_ ev_idle *w) 4053ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2823{ 4054{
2824 clear_pending (EV_A_ (W)w); 4055 clear_pending (EV_A_ (W)w);
2825 if (expect_false (!ev_is_active (w))) 4056 if (expect_false (!ev_is_active (w)))
2826 return; 4057 return;
2827 4058
… …
2839 4070
2840 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2841} 4072}
2842#endif 4073#endif
2843 4074
4075#if EV_PREPARE_ENABLE
2844void 4076void
2845ev_prepare_start (EV_P_ ev_prepare *w) 4077ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2846{ 4078{
2847 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
2848 return; 4080 return;
2849 4081
2850 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
… …
2855 4087
2856 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2857} 4089}
2858 4090
2859void 4091void
2860ev_prepare_stop (EV_P_ ev_prepare *w) 4092ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2861{ 4093{
2862 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
2863 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
2864 return; 4096 return;
2865 4097
… …
2874 4106
2875 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
2876 4108
2877 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2878} 4110}
4111#endif
2879 4112
4113#if EV_CHECK_ENABLE
2880void 4114void
2881ev_check_start (EV_P_ ev_check *w) 4115ev_check_start (EV_P_ ev_check *w) EV_THROW
2882{ 4116{
2883 if (expect_false (ev_is_active (w))) 4117 if (expect_false (ev_is_active (w)))
2884 return; 4118 return;
2885 4119
2886 EV_FREQUENT_CHECK; 4120 EV_FREQUENT_CHECK;
… …
2891 4125
2892 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
2893} 4127}
2894 4128
2895void 4129void
2896ev_check_stop (EV_P_ ev_check *w) 4130ev_check_stop (EV_P_ ev_check *w) EV_THROW
2897{ 4131{
2898 clear_pending (EV_A_ (W)w); 4132 clear_pending (EV_A_ (W)w);
2899 if (expect_false (!ev_is_active (w))) 4133 if (expect_false (!ev_is_active (w)))
2900 return; 4134 return;
2901 4135
… …
2910 4144
2911 ev_stop (EV_A_ (W)w); 4145 ev_stop (EV_A_ (W)w);
2912 4146
2913 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2914} 4148}
4149#endif
2915 4150
2916#if EV_EMBED_ENABLE 4151#if EV_EMBED_ENABLE
2917void noinline 4152void noinline
2918ev_embed_sweep (EV_P_ ev_embed *w) 4153ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2919{ 4154{
2920 ev_loop (w->other, EVLOOP_NONBLOCK); 4155 ev_run (w->other, EVRUN_NOWAIT);
2921} 4156}
2922 4157
2923static void 4158static void
2924embed_io_cb (EV_P_ ev_io *io, int revents) 4159embed_io_cb (EV_P_ ev_io *io, int revents)
2925{ 4160{
2926 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2927 4162
2928 if (ev_cb (w)) 4163 if (ev_cb (w))
2929 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4164 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2930 else 4165 else
2931 ev_loop (w->other, EVLOOP_NONBLOCK); 4166 ev_run (w->other, EVRUN_NOWAIT);
2932} 4167}
2933 4168
2934static void 4169static void
2935embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4170embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2936{ 4171{
2937 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4172 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2938 4173
2939 { 4174 {
2940 struct ev_loop *loop = w->other; 4175 EV_P = w->other;
2941 4176
2942 while (fdchangecnt) 4177 while (fdchangecnt)
2943 { 4178 {
2944 fd_reify (EV_A); 4179 fd_reify (EV_A);
2945 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4180 ev_run (EV_A_ EVRUN_NOWAIT);
2946 } 4181 }
2947 } 4182 }
2948} 4183}
2949 4184
2950static void 4185static void
… …
2953 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4188 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2954 4189
2955 ev_embed_stop (EV_A_ w); 4190 ev_embed_stop (EV_A_ w);
2956 4191
2957 { 4192 {
2958 struct ev_loop *loop = w->other; 4193 EV_P = w->other;
2959 4194
2960 ev_loop_fork (EV_A); 4195 ev_loop_fork (EV_A);
2961 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4196 ev_run (EV_A_ EVRUN_NOWAIT);
2962 } 4197 }
2963 4198
2964 ev_embed_start (EV_A_ w); 4199 ev_embed_start (EV_A_ w);
2965} 4200}
2966 4201
… …
2971 ev_idle_stop (EV_A_ idle); 4206 ev_idle_stop (EV_A_ idle);
2972} 4207}
2973#endif 4208#endif
2974 4209
2975void 4210void
2976ev_embed_start (EV_P_ ev_embed *w) 4211ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2977{ 4212{
2978 if (expect_false (ev_is_active (w))) 4213 if (expect_false (ev_is_active (w)))
2979 return; 4214 return;
2980 4215
2981 { 4216 {
2982 struct ev_loop *loop = w->other; 4217 EV_P = w->other;
2983 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4218 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2984 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4219 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2985 } 4220 }
2986 4221
2987 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
… …
3002 4237
3003 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
3004} 4239}
3005 4240
3006void 4241void
3007ev_embed_stop (EV_P_ ev_embed *w) 4242ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3008{ 4243{
3009 clear_pending (EV_A_ (W)w); 4244 clear_pending (EV_A_ (W)w);
3010 if (expect_false (!ev_is_active (w))) 4245 if (expect_false (!ev_is_active (w)))
3011 return; 4246 return;
3012 4247
… …
3014 4249
3015 ev_io_stop (EV_A_ &w->io); 4250 ev_io_stop (EV_A_ &w->io);
3016 ev_prepare_stop (EV_A_ &w->prepare); 4251 ev_prepare_stop (EV_A_ &w->prepare);
3017 ev_fork_stop (EV_A_ &w->fork); 4252 ev_fork_stop (EV_A_ &w->fork);
3018 4253
4254 ev_stop (EV_A_ (W)w);
4255
3019 EV_FREQUENT_CHECK; 4256 EV_FREQUENT_CHECK;
3020} 4257}
3021#endif 4258#endif
3022 4259
3023#if EV_FORK_ENABLE 4260#if EV_FORK_ENABLE
3024void 4261void
3025ev_fork_start (EV_P_ ev_fork *w) 4262ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3026{ 4263{
3027 if (expect_false (ev_is_active (w))) 4264 if (expect_false (ev_is_active (w)))
3028 return; 4265 return;
3029 4266
3030 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
… …
3035 4272
3036 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
3037} 4274}
3038 4275
3039void 4276void
3040ev_fork_stop (EV_P_ ev_fork *w) 4277ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3041{ 4278{
3042 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
3043 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
3044 return; 4281 return;
3045 4282
… …
3056 4293
3057 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3058} 4295}
3059#endif 4296#endif
3060 4297
4298#if EV_CLEANUP_ENABLE
4299void
4300ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4301{
4302 if (expect_false (ev_is_active (w)))
4303 return;
4304
4305 EV_FREQUENT_CHECK;
4306
4307 ev_start (EV_A_ (W)w, ++cleanupcnt);
4308 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4309 cleanups [cleanupcnt - 1] = w;
4310
4311 /* cleanup watchers should never keep a refcount on the loop */
4312 ev_unref (EV_A);
4313 EV_FREQUENT_CHECK;
4314}
4315
4316void
4317ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4318{
4319 clear_pending (EV_A_ (W)w);
4320 if (expect_false (!ev_is_active (w)))
4321 return;
4322
4323 EV_FREQUENT_CHECK;
4324 ev_ref (EV_A);
4325
4326 {
4327 int active = ev_active (w);
4328
4329 cleanups [active - 1] = cleanups [--cleanupcnt];
4330 ev_active (cleanups [active - 1]) = active;
4331 }
4332
4333 ev_stop (EV_A_ (W)w);
4334
4335 EV_FREQUENT_CHECK;
4336}
4337#endif
4338
3061#if EV_ASYNC_ENABLE 4339#if EV_ASYNC_ENABLE
3062void 4340void
3063ev_async_start (EV_P_ ev_async *w) 4341ev_async_start (EV_P_ ev_async *w) EV_THROW
3064{ 4342{
3065 if (expect_false (ev_is_active (w))) 4343 if (expect_false (ev_is_active (w)))
3066 return; 4344 return;
4345
4346 w->sent = 0;
3067 4347
3068 evpipe_init (EV_A); 4348 evpipe_init (EV_A);
3069 4349
3070 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3071 4351
… …
3075 4355
3076 EV_FREQUENT_CHECK; 4356 EV_FREQUENT_CHECK;
3077} 4357}
3078 4358
3079void 4359void
3080ev_async_stop (EV_P_ ev_async *w) 4360ev_async_stop (EV_P_ ev_async *w) EV_THROW
3081{ 4361{
3082 clear_pending (EV_A_ (W)w); 4362 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4363 if (expect_false (!ev_is_active (w)))
3084 return; 4364 return;
3085 4365
… …
3096 4376
3097 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3098} 4378}
3099 4379
3100void 4380void
3101ev_async_send (EV_P_ ev_async *w) 4381ev_async_send (EV_P_ ev_async *w) EV_THROW
3102{ 4382{
3103 w->sent = 1; 4383 w->sent = 1;
3104 evpipe_write (EV_A_ &gotasync); 4384 evpipe_write (EV_A_ &async_pending);
3105} 4385}
3106#endif 4386#endif
3107 4387
3108/*****************************************************************************/ 4388/*****************************************************************************/
3109 4389
… …
3143 4423
3144 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4424 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3145} 4425}
3146 4426
3147void 4427void
3148ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4428ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3149{ 4429{
3150 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4430 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3151 4431
3152 if (expect_false (!once)) 4432 if (expect_false (!once))
3153 { 4433 {
3154 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4434 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3155 return; 4435 return;
3156 } 4436 }
3157 4437
3158 once->cb = cb; 4438 once->cb = cb;
3159 once->arg = arg; 4439 once->arg = arg;
… …
3173 } 4453 }
3174} 4454}
3175 4455
3176/*****************************************************************************/ 4456/*****************************************************************************/
3177 4457
3178#if 0 4458#if EV_WALK_ENABLE
3179void 4459void ecb_cold
3180ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4460ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3181{ 4461{
3182 int i, j; 4462 int i, j;
3183 ev_watcher_list *wl, *wn; 4463 ev_watcher_list *wl, *wn;
3184 4464
3185 if (types & (EV_IO | EV_EMBED)) 4465 if (types & (EV_IO | EV_EMBED))
… …
3199#if EV_USE_INOTIFY 4479#if EV_USE_INOTIFY
3200 if (ev_cb ((ev_io *)wl) == infy_cb) 4480 if (ev_cb ((ev_io *)wl) == infy_cb)
3201 ; 4481 ;
3202 else 4482 else
3203#endif 4483#endif
3204 if ((ev_io *)wl != &pipeev) 4484 if ((ev_io *)wl != &pipe_w)
3205 if (types & EV_IO) 4485 if (types & EV_IO)
3206 cb (EV_A_ EV_IO, wl); 4486 cb (EV_A_ EV_IO, wl);
3207 4487
3208 wl = wn; 4488 wl = wn;
3209 } 4489 }
… …
3228 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4508 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3229#endif 4509#endif
3230 4510
3231#if EV_IDLE_ENABLE 4511#if EV_IDLE_ENABLE
3232 if (types & EV_IDLE) 4512 if (types & EV_IDLE)
3233 for (j = NUMPRI; i--; ) 4513 for (j = NUMPRI; j--; )
3234 for (i = idlecnt [j]; i--; ) 4514 for (i = idlecnt [j]; i--; )
3235 cb (EV_A_ EV_IDLE, idles [j][i]); 4515 cb (EV_A_ EV_IDLE, idles [j][i]);
3236#endif 4516#endif
3237 4517
3238#if EV_FORK_ENABLE 4518#if EV_FORK_ENABLE
… …
3246 if (types & EV_ASYNC) 4526 if (types & EV_ASYNC)
3247 for (i = asynccnt; i--; ) 4527 for (i = asynccnt; i--; )
3248 cb (EV_A_ EV_ASYNC, asyncs [i]); 4528 cb (EV_A_ EV_ASYNC, asyncs [i]);
3249#endif 4529#endif
3250 4530
4531#if EV_PREPARE_ENABLE
3251 if (types & EV_PREPARE) 4532 if (types & EV_PREPARE)
3252 for (i = preparecnt; i--; ) 4533 for (i = preparecnt; i--; )
3253#if EV_EMBED_ENABLE 4534# if EV_EMBED_ENABLE
3254 if (ev_cb (prepares [i]) != embed_prepare_cb) 4535 if (ev_cb (prepares [i]) != embed_prepare_cb)
3255#endif 4536# endif
3256 cb (EV_A_ EV_PREPARE, prepares [i]); 4537 cb (EV_A_ EV_PREPARE, prepares [i]);
4538#endif
3257 4539
4540#if EV_CHECK_ENABLE
3258 if (types & EV_CHECK) 4541 if (types & EV_CHECK)
3259 for (i = checkcnt; i--; ) 4542 for (i = checkcnt; i--; )
3260 cb (EV_A_ EV_CHECK, checks [i]); 4543 cb (EV_A_ EV_CHECK, checks [i]);
4544#endif
3261 4545
4546#if EV_SIGNAL_ENABLE
3262 if (types & EV_SIGNAL) 4547 if (types & EV_SIGNAL)
3263 for (i = 0; i < signalmax; ++i) 4548 for (i = 0; i < EV_NSIG - 1; ++i)
3264 for (wl = signals [i].head; wl; ) 4549 for (wl = signals [i].head; wl; )
3265 { 4550 {
3266 wn = wl->next; 4551 wn = wl->next;
3267 cb (EV_A_ EV_SIGNAL, wl); 4552 cb (EV_A_ EV_SIGNAL, wl);
3268 wl = wn; 4553 wl = wn;
3269 } 4554 }
4555#endif
3270 4556
4557#if EV_CHILD_ENABLE
3271 if (types & EV_CHILD) 4558 if (types & EV_CHILD)
3272 for (i = EV_PID_HASHSIZE; i--; ) 4559 for (i = (EV_PID_HASHSIZE); i--; )
3273 for (wl = childs [i]; wl; ) 4560 for (wl = childs [i]; wl; )
3274 { 4561 {
3275 wn = wl->next; 4562 wn = wl->next;
3276 cb (EV_A_ EV_CHILD, wl); 4563 cb (EV_A_ EV_CHILD, wl);
3277 wl = wn; 4564 wl = wn;
3278 } 4565 }
4566#endif
3279/* EV_STAT 0x00001000 /* stat data changed */ 4567/* EV_STAT 0x00001000 /* stat data changed */
3280/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4568/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3281} 4569}
3282#endif 4570#endif
3283 4571
3284#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
3285 #include "ev_wrap.h" 4573 #include "ev_wrap.h"
3286#endif 4574#endif
3287 4575
3288#ifdef __cplusplus
3289}
3290#endif
3291

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