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Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.438 by root, Tue May 29 21:03:44 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_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573# define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
627 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
628 #elif _MSC_VER >= 1400 /* VC++ 2005 */
629 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
630 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
631 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
632 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
633 #elif defined _WIN32
634 #include <WinNT.h>
635 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
636 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
637 #include <mbarrier.h>
638 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
639 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
640 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
641 #elif __xlC__
642 #define ECB_MEMORY_FENCE __sync ()
643 #endif
644#endif
645
646#ifndef ECB_MEMORY_FENCE
647 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
648 /* we assume that these memory fences work on all variables/all memory accesses, */
649 /* not just C11 atomics and atomic accesses */
650 #include <stdatomic.h>
651 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
652 /* simple barrier semantics. That means we need to take out thor's hammer. */
653 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
654 #endif
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{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
444 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1200 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
447 */ 1202 */
448 1203
449 if (size) 1204 if (size)
450 return realloc (ptr, size); 1205 return realloc (ptr, size);
451 1206
452 free (ptr); 1207 free (ptr);
453 return 0; 1208 return 0;
1209#endif
454} 1210}
455 1211
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1213
458void 1214void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
460{ 1216{
461 alloc = cb; 1217 alloc = cb;
462} 1218}
463 1219
464inline_speed void * 1220inline_speed void *
… …
466{ 1222{
467 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
468 1224
469 if (!ptr && size) 1225 if (!ptr && size)
470 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
472 abort (); 1232 abort ();
473 } 1233 }
474 1234
475 return ptr; 1235 return ptr;
476} 1236}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1238#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1239#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1240
481/*****************************************************************************/ 1241/*****************************************************************************/
482 1242
1243/* set in reify when reification needed */
1244#define EV_ANFD_REIFY 1
1245
1246/* file descriptor info structure */
483typedef struct 1247typedef struct
484{ 1248{
485 WL head; 1249 WL head;
486 unsigned char events; 1250 unsigned char events; /* the events watched for */
487 unsigned char reify; 1251 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 */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1253 unsigned char unused;
490#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1256#endif
493#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1258 SOCKET handle;
495#endif 1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
1262#endif
496} ANFD; 1263} ANFD;
497 1264
1265/* stores the pending event set for a given watcher */
498typedef struct 1266typedef struct
499{ 1267{
500 W w; 1268 W w;
501 int events; 1269 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1270} ANPENDING;
503 1271
504#if EV_USE_INOTIFY 1272#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1273/* hash table entry per inotify-id */
506typedef struct 1274typedef struct
… …
509} ANFS; 1277} ANFS;
510#endif 1278#endif
511 1279
512/* Heap Entry */ 1280/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1281#if EV_HEAP_CACHE_AT
1282 /* a heap element */
514 typedef struct { 1283 typedef struct {
515 ev_tstamp at; 1284 ev_tstamp at;
516 WT w; 1285 WT w;
517 } ANHE; 1286 } ANHE;
518 1287
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1288 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1289 #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 */ 1290 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1291#else
1292 /* a heap element */
523 typedef WT ANHE; 1293 typedef WT ANHE;
524 1294
525 #define ANHE_w(he) (he) 1295 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1296 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1297 #define ANHE_at_cache(he)
… …
538 #undef VAR 1308 #undef VAR
539 }; 1309 };
540 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
541 1311
542 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1314
545#else 1315#else
546 1316
547 ev_tstamp ev_rt_now; 1317 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; 1318 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1319 #include "ev_vars.h"
550 #undef VAR 1320 #undef VAR
551 1321
552 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
553 1323
554#endif 1324#endif
555 1325
1326#if EV_FEATURE_API
1327# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
1330#else
1331# define EV_RELEASE_CB (void)0
1332# define EV_ACQUIRE_CB (void)0
1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1334#endif
1335
1336#define EVBREAK_RECURSE 0x80
1337
556/*****************************************************************************/ 1338/*****************************************************************************/
557 1339
1340#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1341ev_tstamp
559ev_time (void) 1342ev_time (void) EV_THROW
560{ 1343{
561#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
563 { 1346 {
564 struct timespec ts; 1347 struct timespec ts;
… …
569 1352
570 struct timeval tv; 1353 struct timeval tv;
571 gettimeofday (&tv, 0); 1354 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1355 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1356}
1357#endif
574 1358
575inline_size ev_tstamp 1359inline_size ev_tstamp
576get_clock (void) 1360get_clock (void)
577{ 1361{
578#if EV_USE_MONOTONIC 1362#if EV_USE_MONOTONIC
… …
587 return ev_time (); 1371 return ev_time ();
588} 1372}
589 1373
590#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
591ev_tstamp 1375ev_tstamp
592ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
593{ 1377{
594 return ev_rt_now; 1378 return ev_rt_now;
595} 1379}
596#endif 1380#endif
597 1381
598void 1382void
599ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
600{ 1384{
601 if (delay > 0.) 1385 if (delay > 0.)
602 { 1386 {
603#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
604 struct timespec ts; 1388 struct timespec ts;
605 1389
606 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1392#elif defined _WIN32
611 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
612#else 1394#else
613 struct timeval tv; 1395 struct timeval tv;
614 1396
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 */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
622#endif 1402#endif
623 } 1403 }
624} 1404}
625 1405
626/*****************************************************************************/ 1406/*****************************************************************************/
627 1407
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1409
1410/* find a suitable new size for the given array, */
1411/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1412inline_size int
631array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
632{ 1414{
633 int ncur = cur + 1; 1415 int ncur = cur + 1;
634 1416
635 do 1417 do
636 ncur <<= 1; 1418 ncur <<= 1;
637 while (cnt > ncur); 1419 while (cnt > ncur);
638 1420
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1423 {
642 ncur *= elem; 1424 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1428 }
647 1429
648 return ncur; 1430 return ncur;
649} 1431}
650 1432
651static noinline void * 1433static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1435{
654 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
656} 1438}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1442
661#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
663 { \ 1445 { \
664 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1450 }
669 1451
… …
680#define array_free(stem, idx) \ 1462#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1463 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1464
683/*****************************************************************************/ 1465/*****************************************************************************/
684 1466
1467/* dummy callback for pending events */
1468static void noinline
1469pendingcb (EV_P_ ev_prepare *w, int revents)
1470{
1471}
1472
685void noinline 1473void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
687{ 1475{
688 W w_ = (W)w; 1476 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
690 1478
691 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
695 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
696 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
697 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
699 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
700} 1490}
701 1491
702inline_speed void 1492inline_speed void
703feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
704{ 1494{
… …
724} 1514}
725 1515
726/*****************************************************************************/ 1516/*****************************************************************************/
727 1517
728inline_speed void 1518inline_speed void
729fd_event (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1520{
731 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
732 ev_io *w; 1522 ev_io *w;
733 1523
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1524 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1528 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1529 ev_feed_event (EV_A_ (W)w, ev);
740 } 1530 }
741} 1531}
742 1532
1533/* do not submit kernel events for fds that have reify set */
1534/* because that means they changed while we were polling for new events */
1535inline_speed void
1536fd_event (EV_P_ int fd, int revents)
1537{
1538 ANFD *anfd = anfds + fd;
1539
1540 if (expect_true (!anfd->reify))
1541 fd_event_nocheck (EV_A_ fd, revents);
1542}
1543
743void 1544void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
745{ 1546{
746 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
748} 1549}
749 1550
1551/* make sure the external fd watch events are in-sync */
1552/* with the kernel/libev internal state */
750inline_size void 1553inline_size void
751fd_reify (EV_P) 1554fd_reify (EV_P)
752{ 1555{
753 int i; 1556 int i;
1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
754 1582
755 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
756 { 1584 {
757 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
759 ev_io *w; 1587 ev_io *w;
760 1588
761 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
762 1591
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1593
766#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1595 {
769 unsigned long arg; 1596 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1597
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1599 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1600
774 #endif 1601 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1602 o_reify = EV__IOFDSET; /* actually |= */
776 } 1603 }
777#endif
778 1604
779 { 1605 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); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1607 }
790 1608
791 fdchangecnt = 0; 1609 fdchangecnt = 0;
792} 1610}
793 1611
1612/* something about the given fd changed */
794inline_size void 1613inline_size void
795fd_change (EV_P_ int fd, int flags) 1614fd_change (EV_P_ int fd, int flags)
796{ 1615{
797 unsigned char reify = anfds [fd].reify; 1616 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1617 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
805 } 1624 }
806} 1625}
807 1626
1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1628inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
810{ 1630{
811 ev_io *w; 1631 ev_io *w;
812 1632
813 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1637 }
818} 1638}
819 1639
1640/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1641inline_size int ecb_cold
821fd_valid (int fd) 1642fd_valid (int fd)
822{ 1643{
823#ifdef _WIN32 1644#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1646#else
826 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
827#endif 1648#endif
828} 1649}
829 1650
830/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
831static void noinline 1652static void noinline ecb_cold
832fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
833{ 1654{
834 int fd; 1655 int fd;
835 1656
836 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
840} 1661}
841 1662
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1664static void noinline ecb_cold
844fd_enomem (EV_P) 1665fd_enomem (EV_P)
845{ 1666{
846 int fd; 1667 int fd;
847 1668
848 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1670 if (anfds [fd].events)
850 { 1671 {
851 fd_kill (EV_A_ fd); 1672 fd_kill (EV_A_ fd);
852 return; 1673 break;
853 } 1674 }
854} 1675}
855 1676
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1677/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1678static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1683 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1684 if (anfds [fd].events)
864 { 1685 {
865 anfds [fd].events = 0; 1686 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1689 }
869} 1690}
870 1691
1692/* used to prepare libev internal fd's */
1693/* this is not fork-safe */
1694inline_speed void
1695fd_intern (int fd)
1696{
1697#ifdef _WIN32
1698 unsigned long arg = 1;
1699 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1700#else
1701 fcntl (fd, F_SETFD, FD_CLOEXEC);
1702 fcntl (fd, F_SETFL, O_NONBLOCK);
1703#endif
1704}
1705
871/*****************************************************************************/ 1706/*****************************************************************************/
872 1707
873/* 1708/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * 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 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
877 */ 1712 */
878 1713
879/* 1714/*
… …
947 1782
948 for (;;) 1783 for (;;)
949 { 1784 {
950 int c = k << 1; 1785 int c = k << 1;
951 1786
952 if (c > N + HEAP0 - 1) 1787 if (c >= N + HEAP0)
953 break; 1788 break;
954 1789
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1790 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1791 ? 1 : 0;
957 1792
… …
989 1824
990 heap [k] = he; 1825 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1826 ev_active (ANHE_w (he)) = k;
992} 1827}
993 1828
1829/* move an element suitably so it is in a correct place */
994inline_size void 1830inline_size void
995adjustheap (ANHE *heap, int N, int k) 1831adjustheap (ANHE *heap, int N, int k)
996{ 1832{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1833 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1834 upheap (heap, k);
999 else 1835 else
1000 downheap (heap, N, k); 1836 downheap (heap, N, k);
1001} 1837}
1002 1838
… …
1012 upheap (heap, i + HEAP0); 1848 upheap (heap, i + HEAP0);
1013} 1849}
1014 1850
1015/*****************************************************************************/ 1851/*****************************************************************************/
1016 1852
1853/* associate signal watchers to a signal signal */
1017typedef struct 1854typedef struct
1018{ 1855{
1856 EV_ATOMIC_T pending;
1857#if EV_MULTIPLICITY
1858 EV_P;
1859#endif
1019 WL head; 1860 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1861} ANSIG;
1022 1862
1023static ANSIG *signals; 1863static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1864
1028/*****************************************************************************/ 1865/*****************************************************************************/
1029 1866
1030inline_speed void 1867#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 1868
1042static void noinline 1869static void noinline ecb_cold
1043evpipe_init (EV_P) 1870evpipe_init (EV_P)
1044{ 1871{
1045 if (!ev_is_active (&pipeev)) 1872 if (!ev_is_active (&pipe_w))
1046 { 1873 {
1047#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1877 evfd = eventfd (0, 0);
1878
1879 if (evfd >= 0)
1049 { 1880 {
1050 evpipe [0] = -1; 1881 evpipe [0] = -1;
1051 fd_intern (evfd); 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1884 }
1054 else 1885 else
1055#endif 1886# endif
1056 { 1887 {
1057 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1059 1890
1060 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1892 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1893 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1894 }
1064 1895
1065 ev_io_start (EV_A_ &pipeev); 1896 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1898 }
1068} 1899}
1069 1900
1070inline_size void 1901inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1903{
1073 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1074 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1075 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1924
1079#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1926 if (evfd >= 0)
1081 { 1927 {
1082 uint64_t counter = 1; 1928 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1084 } 1930 }
1085 else 1931 else
1086#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1087 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1088 1944
1089 errno = old_errno; 1945 errno = old_errno;
1090 } 1946 }
1091} 1947}
1092 1948
1949/* called whenever the libev signal pipe */
1950/* got some events (signal, async) */
1093static void 1951static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1953{
1954 int i;
1955
1956 if (revents & EV_READ)
1957 {
1096#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1959 if (evfd >= 0)
1098 { 1960 {
1099 uint64_t counter; 1961 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1101 } 1963 }
1102 else 1964 else
1103#endif 1965#endif
1104 { 1966 {
1105 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1106 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1979 }
1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1986 if (sig_pending)
1107 } 1987 {
1988 sig_pending = 0;
1108 1989
1109 if (gotsig && ev_is_default_loop (EV_A)) 1990 ECB_MEMORY_FENCE;
1110 {
1111 int signum;
1112 gotsig = 0;
1113 1991
1114 for (signum = signalmax; signum--; ) 1992 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1993 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1995 }
1996#endif
1118 1997
1119#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1120 if (gotasync) 1999 if (async_pending)
1121 { 2000 {
1122 int i; 2001 async_pending = 0;
1123 gotasync = 0; 2002
2003 ECB_MEMORY_FENCE;
1124 2004
1125 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1127 { 2007 {
1128 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1129 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1130 } 2011 }
1131 } 2012 }
1132#endif 2013#endif
1133} 2014}
1134 2015
1135/*****************************************************************************/ 2016/*****************************************************************************/
1136 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1137static void 2035static void
1138ev_sighandler (int signum) 2036ev_sighandler (int signum)
1139{ 2037{
2038#ifdef _WIN32
2039 signal (signum, ev_sighandler);
2040#endif
2041
2042 ev_feed_signal (signum);
2043}
2044
2045void noinline
2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
2047{
2048 WL w;
2049
2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
2051 return;
2052
2053 --signum;
2054
1140#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 2056 /* it is permissible to try to feed a signal to the wrong loop */
1142#endif 2057 /* or, likely more useful, feeding a signal nobody is waiting for */
1143 2058
1144#if _WIN32 2059 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; 2060 return;
2061#endif
1165 2062
1166 signals [signum].gotsig = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1167 2065
1168 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 2068}
1171 2069
2070#if EV_USE_SIGNALFD
2071static void
2072sigfdcb (EV_P_ ev_io *iow, int revents)
2073{
2074 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2075
2076 for (;;)
2077 {
2078 ssize_t res = read (sigfd, si, sizeof (si));
2079
2080 /* not ISO-C, as res might be -1, but works with SuS */
2081 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2082 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2083
2084 if (res < (ssize_t)sizeof (si))
2085 break;
2086 }
2087}
2088#endif
2089
2090#endif
2091
1172/*****************************************************************************/ 2092/*****************************************************************************/
1173 2093
2094#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2096
1178static ev_signal childev; 2097static ev_signal childev;
1179 2098
1180#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
1182#endif 2101#endif
1183 2102
2103/* handle a single child status event */
1184inline_speed void 2104inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1186{ 2106{
1187 ev_child *w; 2107 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2109
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2111 {
1192 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1194 { 2114 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2122
1203#ifndef WCONTINUED 2123#ifndef WCONTINUED
1204# define WCONTINUED 0 2124# define WCONTINUED 0
1205#endif 2125#endif
1206 2126
2127/* called on sigchld etc., calls waitpid */
1207static void 2128static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2129childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2130{
1210 int pid, status; 2131 int pid, status;
1211 2132
… …
1219 /* make sure we are called again until all children have been reaped */ 2140 /* 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 */ 2141 /* 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); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2143
1223 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2147}
1227 2148
1228#endif 2149#endif
1229 2150
1230/*****************************************************************************/ 2151/*****************************************************************************/
1231 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1232#if EV_USE_PORT 2156#if EV_USE_PORT
1233# include "ev_port.c" 2157# include "ev_port.c"
1234#endif 2158#endif
1235#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1243#endif 2167#endif
1244#if EV_USE_SELECT 2168#if EV_USE_SELECT
1245# include "ev_select.c" 2169# include "ev_select.c"
1246#endif 2170#endif
1247 2171
1248int 2172int ecb_cold
1249ev_version_major (void) 2173ev_version_major (void) EV_THROW
1250{ 2174{
1251 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1252} 2176}
1253 2177
1254int 2178int ecb_cold
1255ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1256{ 2180{
1257 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1258} 2182}
1259 2183
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2185int inline_size ecb_cold
1262enable_secure (void) 2186enable_secure (void)
1263{ 2187{
1264#ifdef _WIN32 2188#ifdef _WIN32
1265 return 0; 2189 return 0;
1266#else 2190#else
1267 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2192 || getgid () != getegid ();
1269#endif 2193#endif
1270} 2194}
1271 2195
1272unsigned int 2196unsigned int ecb_cold
1273ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1274{ 2198{
1275 unsigned int flags = 0; 2199 unsigned int flags = 0;
1276 2200
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1278 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2206
1283 return flags; 2207 return flags;
1284} 2208}
1285 2209
1286unsigned int 2210unsigned int ecb_cold
1287ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1288{ 2212{
1289 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1290 2214
1291#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1292 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1296#ifdef __APPLE__ 2220#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2221 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif
1301 2228
1302 return flags; 2229 return flags;
1303} 2230}
1304 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1305unsigned int 2244unsigned int
1306ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1307{ 2246{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 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} 2248}
1316 2249
2250#if EV_FEATURE_API
1317unsigned int 2251unsigned int
1318ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1319{ 2253{
1320 return backend; 2254 return loop_count;
1321} 2255}
1322 2256
1323unsigned int 2257unsigned int
1324ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1325{ 2259{
1326 return loop_count; 2260 return loop_depth;
1327} 2261}
1328 2262
1329void 2263void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1331{ 2265{
1332 io_blocktime = interval; 2266 io_blocktime = interval;
1333} 2267}
1334 2268
1335void 2269void
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1337{ 2271{
1338 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1339} 2273}
1340 2274
2275void
2276ev_set_userdata (EV_P_ void *data) EV_THROW
2277{
2278 userdata = data;
2279}
2280
2281void *
2282ev_userdata (EV_P) EV_THROW
2283{
2284 return userdata;
2285}
2286
2287void
2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2289{
2290 invoke_cb = invoke_pending_cb;
2291}
2292
2293void
2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2295{
2296 release_cb = release;
2297 acquire_cb = acquire;
2298}
2299#endif
2300
2301/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2302static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1343{ 2304{
1344 if (!backend) 2305 if (!backend)
1345 { 2306 {
2307 origflags = flags;
2308
1346#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1347 if (!have_realtime) 2310 if (!have_realtime)
1348 { 2311 {
1349 struct timespec ts; 2312 struct timespec ts;
1350 2313
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2324 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2325 have_monotonic = 1;
1363 } 2326 }
1364#endif 2327#endif
1365 2328
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 */ 2329 /* pid check not overridable via env */
1381#ifndef _WIN32 2330#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2331 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2332 curpid = getpid ();
1384#endif 2333#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2336 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2339
1391 if (!(flags & 0x0000ffffU)) 2340 ev_rt_now = ev_time ();
2341 mn_now = get_clock ();
2342 now_floor = mn_now;
2343 rtmn_diff = ev_rt_now - mn_now;
2344#if EV_FEATURE_API
2345 invoke_cb = ev_invoke_pending;
2346#endif
2347
2348 io_blocktime = 0.;
2349 timeout_blocktime = 0.;
2350 backend = 0;
2351 backend_fd = -1;
2352 sig_pending = 0;
2353#if EV_ASYNC_ENABLE
2354 async_pending = 0;
2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
2358#if EV_USE_INOTIFY
2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2360#endif
2361#if EV_USE_SIGNALFD
2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2363#endif
2364
2365 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1393 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1394#if EV_USE_PORT 2371#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2373#endif
1397#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2382#endif
1406#if EV_USE_SELECT 2383#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2385#endif
1409 2386
2387 ev_prepare_init (&pending_w, pendingcb);
2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2390 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1412 } 2393 }
1413} 2394}
1414 2395
1415static void noinline 2396/* free up a loop structure */
2397void ecb_cold
1416loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1417{ 2399{
1418 int i; 2400 int i;
1419 2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
2424
1420 if (ev_is_active (&pipeev)) 2425 if (ev_is_active (&pipe_w))
1421 { 2426 {
1422 ev_ref (EV_A); /* signal watcher */ 2427 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2429
1425#if EV_USE_EVENTFD 2430#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2431 if (evfd >= 0)
1427 close (evfd); 2432 close (evfd);
1428#endif 2433#endif
1429 2434
1430 if (evpipe [0] >= 0) 2435 if (evpipe [0] >= 0)
1431 { 2436 {
1432 close (evpipe [0]); 2437 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2438 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2439 }
1435 } 2440 }
2441
2442#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w))
2444 close (sigfd);
2445#endif
1436 2446
1437#if EV_USE_INOTIFY 2447#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2448 if (fs_fd >= 0)
1439 close (fs_fd); 2449 close (fs_fd);
1440#endif 2450#endif
1441 2451
1442 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1443 close (backend_fd); 2453 close (backend_fd);
1444 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1445#if EV_USE_PORT 2458#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2460#endif
1448#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2477#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2478 array_free (idle, [i]);
1466#endif 2479#endif
1467 } 2480 }
1468 2481
1469 ev_free (anfds); anfdmax = 0; 2482 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2483
1471 /* have to use the microsoft-never-gets-it-right macro */ 2484 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2485 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2486 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2487 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1477#endif 2490#endif
1478#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1480#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1481 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1485#endif 2501#endif
1486 2502
1487 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1488} 2513}
1489 2514
1490#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1492#endif 2517#endif
… …
1505#endif 2530#endif
1506#if EV_USE_INOTIFY 2531#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2532 infy_fork (EV_A);
1508#endif 2533#endif
1509 2534
1510 if (ev_is_active (&pipeev)) 2535 if (ev_is_active (&pipe_w))
1511 { 2536 {
1512 /* this "locks" the handlers against writing to the pipe */ 2537 /* 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 2538
1519 ev_ref (EV_A); 2539 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2540 ev_io_stop (EV_A_ &pipe_w);
1521 2541
1522#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2543 if (evfd >= 0)
1524 close (evfd); 2544 close (evfd);
1525#endif 2545#endif
1526 2546
1527 if (evpipe [0] >= 0) 2547 if (evpipe [0] >= 0)
1528 { 2548 {
1529 close (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2551 }
1532 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2555 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2556 pipecb (EV_A_ &pipe_w, EV_READ);
2557#endif
1536 } 2558 }
1537 2559
1538 postfork = 0; 2560 postfork = 0;
1539} 2561}
1540 2562
1541#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1542 2564
1543struct ev_loop * 2565struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1545{ 2567{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2569
1548 memset (loop, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1551 2572
1552 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1553 return loop; 2574 return EV_A;
1554 2575
2576 ev_free (EV_A);
1555 return 0; 2577 return 0;
1556} 2578}
1557 2579
1558void 2580#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 2581
1571#if EV_VERIFY 2582#if EV_VERIFY
1572static void noinline 2583static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1574{ 2585{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2587
1577 if (w->pending) 2588 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2590}
1580 2591
1581static void noinline 2592static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2594{
1584 int i; 2595 int i;
1585 2596
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2602
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2604 }
1594} 2605}
1595 2606
1596static void noinline 2607static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1598{ 2609{
1599 while (cnt--) 2610 while (cnt--)
1600 { 2611 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1603 } 2614 }
1604} 2615}
1605#endif 2616#endif
1606 2617
1607void 2618#if EV_FEATURE_API
1608ev_loop_verify (EV_P) 2619void ecb_cold
2620ev_verify (EV_P) EV_THROW
1609{ 2621{
1610#if EV_VERIFY 2622#if EV_VERIFY
1611 int i; 2623 int i;
1612 WL w; 2624 WL w, w2;
1613 2625
1614 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1615 2627
1616 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1617 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1619 2631
1620 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1621 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1622 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1623 { 2638 {
1624 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 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)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1627 } 2649 }
2650 }
1628 2651
1629 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1630 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1631 2654
1632#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1647#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2673#endif
1651 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1652#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2683#endif
1656 2684
2685#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1659 2689
2690#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1662 2694
1663# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 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) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1666# endif 2700# endif
1667#endif 2701#endif
1668} 2702}
1669 2703#endif
1670#endif /* multiplicity */
1671 2704
1672#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1673struct ev_loop * 2706struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2707#else
1676int 2708int
2709#endif
1677ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1678#endif
1679{ 2711{
1680 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1681 { 2713 {
1682#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2716#else
1685 ev_default_loop_ptr = 1; 2717 ev_default_loop_ptr = 1;
1686#endif 2718#endif
1687 2719
1688 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1689 2721
1690 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1691 { 2723 {
1692#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2729#endif
… …
1702 2734
1703 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1704} 2736}
1705 2737
1706void 2738void
1707ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1708{ 2740{
1709#if EV_MULTIPLICITY
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 */ 2741 postfork = 1; /* must be in line with ev_default_fork */
1731} 2742}
1732 2743
1733/*****************************************************************************/ 2744/*****************************************************************************/
1734 2745
1735void 2746void
1736ev_invoke (EV_P_ void *w, int revents) 2747ev_invoke (EV_P_ void *w, int revents)
1737{ 2748{
1738 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1739} 2750}
1740 2751
1741inline_speed void 2752unsigned int
1742call_pending (EV_P) 2753ev_pending_count (EV_P) EV_THROW
1743{ 2754{
1744 int pri; 2755 int pri;
2756 unsigned int count = 0;
1745 2757
1746 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
2759 count += pendingcnt [pri];
2760
2761 return count;
2762}
2763
2764void noinline
2765ev_invoke_pending (EV_P)
2766{
2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1747 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
1748 { 2769 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1750 2771
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1754
1755 p->w->pending = 0; 2772 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
1758 }
1759 } 2775 }
1760} 2776}
1761 2777
1762#if EV_IDLE_ENABLE 2778#if EV_IDLE_ENABLE
2779/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */
1763inline_size void 2781inline_size void
1764idle_reify (EV_P) 2782idle_reify (EV_P)
1765{ 2783{
1766 if (expect_false (idleall)) 2784 if (expect_false (idleall))
1767 { 2785 {
… …
1780 } 2798 }
1781 } 2799 }
1782} 2800}
1783#endif 2801#endif
1784 2802
2803/* make timers pending */
1785inline_size void 2804inline_size void
1786timers_reify (EV_P) 2805timers_reify (EV_P)
1787{ 2806{
1788 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
1789 2808
… …
1813 EV_FREQUENT_CHECK; 2832 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2833 feed_reverse (EV_A_ (W)w);
1815 } 2834 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2836
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2837 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2838 }
1820} 2839}
1821 2840
1822#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
2867/* make periodics pending */
1823inline_size void 2868inline_size void
1824periodics_reify (EV_P) 2869periodics_reify (EV_P)
1825{ 2870{
1826 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
1827 2872
1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1829 { 2874 {
1830 int feed_count = 0;
1831
1832 do 2875 do
1833 { 2876 {
1834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1835 2878
1836 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
1847 } 2890 }
1848 else if (w->interval) 2891 else if (w->interval)
1849 { 2892 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2893 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]); 2894 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
1866 } 2896 }
1867 else 2897 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2904
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2906 }
1877} 2907}
1878 2908
2909/* simply recalculate all periodics */
2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2911static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
1881{ 2913{
1882 int i; 2914 int i;
1883 2915
1884 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2920
1889 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2923 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
1893 2925
1894 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
1895 } 2927 }
1896 2928
1897 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
1898} 2930}
1899#endif 2931#endif
1900 2932
2933/* adjust all timers by a given offset */
1901static void noinline 2934static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2935timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2936{
1904 int i; 2937 int i;
1905 2938
1906 for (i = 0; i < timercnt; ++i) 2939 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2942 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2943 ANHE_at_cache (*he);
1911 } 2944 }
1912} 2945}
1913 2946
2947/* fetch new monotonic and realtime times from the kernel */
2948/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2949inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2950time_update (EV_P_ ev_tstamp max_block)
1916{ 2951{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2952#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2953 if (expect_true (have_monotonic))
1921 { 2954 {
2955 int i;
1922 ev_tstamp odiff = rtmn_diff; 2956 ev_tstamp odiff = rtmn_diff;
1923 2957
1924 mn_now = get_clock (); 2958 mn_now = get_clock ();
1925 2959
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1942 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
1944 */ 2978 */
1945 for (i = 4; --i; ) 2979 for (i = 4; --i; )
1946 { 2980 {
2981 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
1948 2983
2984 diff = odiff - rtmn_diff;
2985
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2987 return; /* all is well */
1951 2988
1952 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2990 mn_now = get_clock ();
1954 now_floor = mn_now; 2991 now_floor = mn_now;
… …
1976 3013
1977 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
1978 } 3015 }
1979} 3016}
1980 3017
1981static int loop_done; 3018int
1982
1983void
1984ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
1985{ 3020{
3021#if EV_FEATURE_API
3022 ++loop_depth;
3023#endif
3024
3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3026
1986 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
1987 3028
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 3030
1990 do 3031 do
1991 { 3032 {
1992#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
1994#endif 3035#endif
1995 3036
1996#ifndef _WIN32 3037#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 3047 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 3048 if (expect_false (postfork))
2008 if (forkcnt) 3049 if (forkcnt)
2009 { 3050 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 3052 EV_INVOKE_PENDING;
2012 } 3053 }
2013#endif 3054#endif
2014 3055
3056#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
2017 { 3059 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 3061 EV_INVOKE_PENDING;
2020 } 3062 }
3063#endif
3064
3065 if (expect_false (loop_done))
3066 break;
2021 3067
2022 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 3069 if (expect_false (postfork))
2024 loop_fork (EV_A); 3070 loop_fork (EV_A);
2025 3071
… …
2029 /* calculate blocking time */ 3075 /* calculate blocking time */
2030 { 3076 {
2031 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
2033 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3092 {
2036 /* update time to cancel out callback processing overhead */ 3093 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 3094
2039 if (timercnt) 3095 if (timercnt)
2040 { 3096 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
2043 } 3099 }
2044 3100
2045#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 3102 if (periodiccnt)
2047 { 3103 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2050 } 3106 }
2051#endif 3107#endif
2052 3108
3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
2055 3112
2056 sleeptime = waittime - backend_fudge; 3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
2057 3117
3118 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 3119 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 3120 {
3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3122
3123 if (sleeptime > waittime - backend_mintime)
3124 sleeptime = waittime - backend_mintime;
3125
3126 if (expect_true (sleeptime > 0.))
3127 {
2063 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 3129 waittime -= sleeptime;
3130 }
2065 } 3131 }
2066 } 3132 }
2067 3133
3134#if EV_FEATURE_API
2068 ++loop_count; 3135 ++loop_count;
3136#endif
3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 if (pipe_write_skipped)
3144 {
3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3146 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3147 }
3148
2070 3149
2071 /* update ev_rt_now, do magic */ 3150 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 3151 time_update (EV_A_ waittime + sleeptime);
2073 } 3152 }
2074 3153
… …
2081#if EV_IDLE_ENABLE 3160#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 3161 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 3162 idle_reify (EV_A);
2084#endif 3163#endif
2085 3164
3165#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 3166 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 3167 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3168 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3169#endif
2089 3170
2090 call_pending (EV_A); 3171 EV_INVOKE_PENDING;
2091 } 3172 }
2092 while (expect_true ( 3173 while (expect_true (
2093 activecnt 3174 activecnt
2094 && !loop_done 3175 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3176 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 3177 ));
2097 3178
2098 if (loop_done == EVUNLOOP_ONE) 3179 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 3180 loop_done = EVBREAK_CANCEL;
3181
3182#if EV_FEATURE_API
3183 --loop_depth;
3184#endif
3185
3186 return activecnt;
2100} 3187}
2101 3188
2102void 3189void
2103ev_unloop (EV_P_ int how) 3190ev_break (EV_P_ int how) EV_THROW
2104{ 3191{
2105 loop_done = how; 3192 loop_done = how;
2106} 3193}
2107 3194
2108void 3195void
2109ev_ref (EV_P) 3196ev_ref (EV_P) EV_THROW
2110{ 3197{
2111 ++activecnt; 3198 ++activecnt;
2112} 3199}
2113 3200
2114void 3201void
2115ev_unref (EV_P) 3202ev_unref (EV_P) EV_THROW
2116{ 3203{
2117 --activecnt; 3204 --activecnt;
2118} 3205}
2119 3206
2120void 3207void
2121ev_now_update (EV_P) 3208ev_now_update (EV_P) EV_THROW
2122{ 3209{
2123 time_update (EV_A_ 1e100); 3210 time_update (EV_A_ 1e100);
2124} 3211}
2125 3212
2126void 3213void
2127ev_suspend (EV_P) 3214ev_suspend (EV_P) EV_THROW
2128{ 3215{
2129 ev_now_update (EV_A); 3216 ev_now_update (EV_A);
2130} 3217}
2131 3218
2132void 3219void
2133ev_resume (EV_P) 3220ev_resume (EV_P) EV_THROW
2134{ 3221{
2135 ev_tstamp mn_prev = mn_now; 3222 ev_tstamp mn_prev = mn_now;
2136 3223
2137 ev_now_update (EV_A); 3224 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 3225 timers_reschedule (EV_A_ mn_now - mn_prev);
3226#if EV_PERIODIC_ENABLE
3227 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 3228 periodics_reschedule (EV_A);
3229#endif
2141} 3230}
2142 3231
2143/*****************************************************************************/ 3232/*****************************************************************************/
3233/* singly-linked list management, used when the expected list length is short */
2144 3234
2145inline_size void 3235inline_size void
2146wlist_add (WL *head, WL elem) 3236wlist_add (WL *head, WL elem)
2147{ 3237{
2148 elem->next = *head; 3238 elem->next = *head;
… …
2152inline_size void 3242inline_size void
2153wlist_del (WL *head, WL elem) 3243wlist_del (WL *head, WL elem)
2154{ 3244{
2155 while (*head) 3245 while (*head)
2156 { 3246 {
2157 if (*head == elem) 3247 if (expect_true (*head == elem))
2158 { 3248 {
2159 *head = elem->next; 3249 *head = elem->next;
2160 return; 3250 break;
2161 } 3251 }
2162 3252
2163 head = &(*head)->next; 3253 head = &(*head)->next;
2164 } 3254 }
2165} 3255}
2166 3256
3257/* internal, faster, version of ev_clear_pending */
2167inline_speed void 3258inline_speed void
2168clear_pending (EV_P_ W w) 3259clear_pending (EV_P_ W w)
2169{ 3260{
2170 if (w->pending) 3261 if (w->pending)
2171 { 3262 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3263 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 3264 w->pending = 0;
2174 } 3265 }
2175} 3266}
2176 3267
2177int 3268int
2178ev_clear_pending (EV_P_ void *w) 3269ev_clear_pending (EV_P_ void *w) EV_THROW
2179{ 3270{
2180 W w_ = (W)w; 3271 W w_ = (W)w;
2181 int pending = w_->pending; 3272 int pending = w_->pending;
2182 3273
2183 if (expect_true (pending)) 3274 if (expect_true (pending))
2184 { 3275 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3276 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3277 p->w = (W)&pending_w;
2186 w_->pending = 0; 3278 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 3279 return p->events;
2189 } 3280 }
2190 else 3281 else
2191 return 0; 3282 return 0;
2192} 3283}
2193 3284
2194inline_size void 3285inline_size void
2195pri_adjust (EV_P_ W w) 3286pri_adjust (EV_P_ W w)
2196{ 3287{
2197 int pri = w->priority; 3288 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3289 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3290 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 3291 ev_set_priority (w, pri);
2201} 3292}
2202 3293
2203inline_speed void 3294inline_speed void
2204ev_start (EV_P_ W w, int active) 3295ev_start (EV_P_ W w, int active)
2205{ 3296{
… …
2216} 3307}
2217 3308
2218/*****************************************************************************/ 3309/*****************************************************************************/
2219 3310
2220void noinline 3311void noinline
2221ev_io_start (EV_P_ ev_io *w) 3312ev_io_start (EV_P_ ev_io *w) EV_THROW
2222{ 3313{
2223 int fd = w->fd; 3314 int fd = w->fd;
2224 3315
2225 if (expect_false (ev_is_active (w))) 3316 if (expect_false (ev_is_active (w)))
2226 return; 3317 return;
2227 3318
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3319 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3320 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 3321
2231 EV_FREQUENT_CHECK; 3322 EV_FREQUENT_CHECK;
2232 3323
2233 ev_start (EV_A_ (W)w, 1); 3324 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2235 wlist_add (&anfds[fd].head, (WL)w); 3326 wlist_add (&anfds[fd].head, (WL)w);
2236 3327
3328 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3331 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 3332 w->events &= ~EV__IOFDSET;
2239 3333
2240 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2241} 3335}
2242 3336
2243void noinline 3337void noinline
2244ev_io_stop (EV_P_ ev_io *w) 3338ev_io_stop (EV_P_ ev_io *w) EV_THROW
2245{ 3339{
2246 clear_pending (EV_A_ (W)w); 3340 clear_pending (EV_A_ (W)w);
2247 if (expect_false (!ev_is_active (w))) 3341 if (expect_false (!ev_is_active (w)))
2248 return; 3342 return;
2249 3343
… …
2252 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2253 3347
2254 wlist_del (&anfds[w->fd].head, (WL)w); 3348 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 3349 ev_stop (EV_A_ (W)w);
2256 3350
2257 fd_change (EV_A_ w->fd, 1); 3351 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 3352
2259 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
2260} 3354}
2261 3355
2262void noinline 3356void noinline
2263ev_timer_start (EV_P_ ev_timer *w) 3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2264{ 3358{
2265 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
2266 return; 3360 return;
2267 3361
2268 ev_at (w) += mn_now; 3362 ev_at (w) += mn_now;
… …
2282 3376
2283 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2284} 3378}
2285 3379
2286void noinline 3380void noinline
2287ev_timer_stop (EV_P_ ev_timer *w) 3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2288{ 3382{
2289 clear_pending (EV_A_ (W)w); 3383 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w))) 3384 if (expect_false (!ev_is_active (w)))
2291 return; 3385 return;
2292 3386
… …
2304 timers [active] = timers [timercnt + HEAP0]; 3398 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 3399 adjustheap (timers, timercnt, active);
2306 } 3400 }
2307 } 3401 }
2308 3402
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 3403 ev_at (w) -= mn_now;
2312 3404
2313 ev_stop (EV_A_ (W)w); 3405 ev_stop (EV_A_ (W)w);
3406
3407 EV_FREQUENT_CHECK;
2314} 3408}
2315 3409
2316void noinline 3410void noinline
2317ev_timer_again (EV_P_ ev_timer *w) 3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2318{ 3412{
2319 EV_FREQUENT_CHECK; 3413 EV_FREQUENT_CHECK;
3414
3415 clear_pending (EV_A_ (W)w);
2320 3416
2321 if (ev_is_active (w)) 3417 if (ev_is_active (w))
2322 { 3418 {
2323 if (w->repeat) 3419 if (w->repeat)
2324 { 3420 {
… …
2336 } 3432 }
2337 3433
2338 EV_FREQUENT_CHECK; 3434 EV_FREQUENT_CHECK;
2339} 3435}
2340 3436
3437ev_tstamp
3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3439{
3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3441}
3442
2341#if EV_PERIODIC_ENABLE 3443#if EV_PERIODIC_ENABLE
2342void noinline 3444void noinline
2343ev_periodic_start (EV_P_ ev_periodic *w) 3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2344{ 3446{
2345 if (expect_false (ev_is_active (w))) 3447 if (expect_false (ev_is_active (w)))
2346 return; 3448 return;
2347 3449
2348 if (w->reschedule_cb) 3450 if (w->reschedule_cb)
2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3451 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2350 else if (w->interval) 3452 else if (w->interval)
2351 { 3453 {
2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3454 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2353 /* this formula differs from the one in periodic_reify because we do not always round up */ 3455 periodic_recalc (EV_A_ w);
2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2355 } 3456 }
2356 else 3457 else
2357 ev_at (w) = w->offset; 3458 ev_at (w) = w->offset;
2358 3459
2359 EV_FREQUENT_CHECK; 3460 EV_FREQUENT_CHECK;
… …
2369 3470
2370 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2371} 3472}
2372 3473
2373void noinline 3474void noinline
2374ev_periodic_stop (EV_P_ ev_periodic *w) 3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2375{ 3476{
2376 clear_pending (EV_A_ (W)w); 3477 clear_pending (EV_A_ (W)w);
2377 if (expect_false (!ev_is_active (w))) 3478 if (expect_false (!ev_is_active (w)))
2378 return; 3479 return;
2379 3480
… …
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 3492 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 3493 adjustheap (periodics, periodiccnt, active);
2393 } 3494 }
2394 } 3495 }
2395 3496
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
3498
3499 EV_FREQUENT_CHECK;
2399} 3500}
2400 3501
2401void noinline 3502void noinline
2402ev_periodic_again (EV_P_ ev_periodic *w) 3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2403{ 3504{
2404 /* TODO: use adjustheap and recalculation */ 3505 /* TODO: use adjustheap and recalculation */
2405 ev_periodic_stop (EV_A_ w); 3506 ev_periodic_stop (EV_A_ w);
2406 ev_periodic_start (EV_A_ w); 3507 ev_periodic_start (EV_A_ w);
2407} 3508}
… …
2409 3510
2410#ifndef SA_RESTART 3511#ifndef SA_RESTART
2411# define SA_RESTART 0 3512# define SA_RESTART 0
2412#endif 3513#endif
2413 3514
3515#if EV_SIGNAL_ENABLE
3516
2414void noinline 3517void noinline
2415ev_signal_start (EV_P_ ev_signal *w) 3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2416{ 3519{
2417#if EV_MULTIPLICITY
2418 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2419#endif
2420 if (expect_false (ev_is_active (w))) 3520 if (expect_false (ev_is_active (w)))
2421 return; 3521 return;
2422 3522
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2424 3524
2425 evpipe_init (EV_A); 3525#if EV_MULTIPLICITY
3526 assert (("libev: a signal must not be attached to two different loops",
3527 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2426 3528
2427 EV_FREQUENT_CHECK; 3529 signals [w->signum - 1].loop = EV_A;
3530#endif
2428 3531
3532 EV_FREQUENT_CHECK;
3533
3534#if EV_USE_SIGNALFD
3535 if (sigfd == -2)
2429 { 3536 {
2430#ifndef _WIN32 3537 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 3538 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 3539 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 3540
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3541 if (sigfd >= 0)
3542 {
3543 fd_intern (sigfd); /* doing it twice will not hurt */
2437 3544
2438#ifndef _WIN32 3545 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 3546
2440#endif 3547 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3548 ev_set_priority (&sigfd_w, EV_MAXPRI);
3549 ev_io_start (EV_A_ &sigfd_w);
3550 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3551 }
2441 } 3552 }
3553
3554 if (sigfd >= 0)
3555 {
3556 /* TODO: check .head */
3557 sigaddset (&sigfd_set, w->signum);
3558 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3559
3560 signalfd (sigfd, &sigfd_set, 0);
3561 }
3562#endif
2442 3563
2443 ev_start (EV_A_ (W)w, 1); 3564 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 3565 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 3566
2446 if (!((WL)w)->next) 3567 if (!((WL)w)->next)
3568# if EV_USE_SIGNALFD
3569 if (sigfd < 0) /*TODO*/
3570# endif
2447 { 3571 {
2448#if _WIN32 3572# ifdef _WIN32
3573 evpipe_init (EV_A);
3574
2449 signal (w->signum, ev_sighandler); 3575 signal (w->signum, ev_sighandler);
2450#else 3576# else
2451 struct sigaction sa; 3577 struct sigaction sa;
3578
3579 evpipe_init (EV_A);
3580
2452 sa.sa_handler = ev_sighandler; 3581 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 3582 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3583 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 3584 sigaction (w->signum, &sa, 0);
3585
3586 if (origflags & EVFLAG_NOSIGMASK)
3587 {
3588 sigemptyset (&sa.sa_mask);
3589 sigaddset (&sa.sa_mask, w->signum);
3590 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3591 }
2456#endif 3592#endif
2457 } 3593 }
2458 3594
2459 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2460} 3596}
2461 3597
2462void noinline 3598void noinline
2463ev_signal_stop (EV_P_ ev_signal *w) 3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2464{ 3600{
2465 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
2466 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
2467 return; 3603 return;
2468 3604
… …
2470 3606
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 3607 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 3608 ev_stop (EV_A_ (W)w);
2473 3609
2474 if (!signals [w->signum - 1].head) 3610 if (!signals [w->signum - 1].head)
3611 {
3612#if EV_MULTIPLICITY
3613 signals [w->signum - 1].loop = 0; /* unattach from signal */
3614#endif
3615#if EV_USE_SIGNALFD
3616 if (sigfd >= 0)
3617 {
3618 sigset_t ss;
3619
3620 sigemptyset (&ss);
3621 sigaddset (&ss, w->signum);
3622 sigdelset (&sigfd_set, w->signum);
3623
3624 signalfd (sigfd, &sigfd_set, 0);
3625 sigprocmask (SIG_UNBLOCK, &ss, 0);
3626 }
3627 else
3628#endif
2475 signal (w->signum, SIG_DFL); 3629 signal (w->signum, SIG_DFL);
3630 }
2476 3631
2477 EV_FREQUENT_CHECK; 3632 EV_FREQUENT_CHECK;
2478} 3633}
3634
3635#endif
3636
3637#if EV_CHILD_ENABLE
2479 3638
2480void 3639void
2481ev_child_start (EV_P_ ev_child *w) 3640ev_child_start (EV_P_ ev_child *w) EV_THROW
2482{ 3641{
2483#if EV_MULTIPLICITY 3642#if EV_MULTIPLICITY
2484 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif 3644#endif
2486 if (expect_false (ev_is_active (w))) 3645 if (expect_false (ev_is_active (w)))
2487 return; 3646 return;
2488 3647
2489 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2490 3649
2491 ev_start (EV_A_ (W)w, 1); 3650 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3651 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 3652
2494 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
2495} 3654}
2496 3655
2497void 3656void
2498ev_child_stop (EV_P_ ev_child *w) 3657ev_child_stop (EV_P_ ev_child *w) EV_THROW
2499{ 3658{
2500 clear_pending (EV_A_ (W)w); 3659 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w))) 3660 if (expect_false (!ev_is_active (w)))
2502 return; 3661 return;
2503 3662
2504 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2505 3664
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3665 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2508 3667
2509 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2510} 3669}
3670
3671#endif
2511 3672
2512#if EV_STAT_ENABLE 3673#if EV_STAT_ENABLE
2513 3674
2514# ifdef _WIN32 3675# ifdef _WIN32
2515# undef lstat 3676# undef lstat
… …
2521#define MIN_STAT_INTERVAL 0.1074891 3682#define MIN_STAT_INTERVAL 0.1074891
2522 3683
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3684static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 3685
2525#if EV_USE_INOTIFY 3686#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192 3687
3688/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3689# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2527 3690
2528static void noinline 3691static void noinline
2529infy_add (EV_P_ ev_stat *w) 3692infy_add (EV_P_ ev_stat *w)
2530{ 3693{
2531 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); 3694 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);
2532 3695
2533 if (w->wd < 0) 3696 if (w->wd >= 0)
3697 {
3698 struct statfs sfs;
3699
3700 /* now local changes will be tracked by inotify, but remote changes won't */
3701 /* unless the filesystem is known to be local, we therefore still poll */
3702 /* also do poll on <2.6.25, but with normal frequency */
3703
3704 if (!fs_2625)
3705 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3706 else if (!statfs (w->path, &sfs)
3707 && (sfs.f_type == 0x1373 /* devfs */
3708 || sfs.f_type == 0xEF53 /* ext2/3 */
3709 || sfs.f_type == 0x3153464a /* jfs */
3710 || sfs.f_type == 0x52654973 /* reiser3 */
3711 || sfs.f_type == 0x01021994 /* tempfs */
3712 || sfs.f_type == 0x58465342 /* xfs */))
3713 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3714 else
3715 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 3716 }
3717 else
3718 {
3719 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3720 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2536 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2537 3721
2538 /* monitor some parent directory for speedup hints */ 3722 /* if path is not there, monitor some parent directory for speedup hints */
2539 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3723 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 3724 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3725 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 3726 {
2543 char path [4096]; 3727 char path [4096];
… …
2553 if (!pend || pend == path) 3737 if (!pend || pend == path)
2554 break; 3738 break;
2555 3739
2556 *pend = 0; 3740 *pend = 0;
2557 w->wd = inotify_add_watch (fs_fd, path, mask); 3741 w->wd = inotify_add_watch (fs_fd, path, mask);
2558 } 3742 }
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3743 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 3744 }
2561 } 3745 }
2562 3746
2563 if (w->wd >= 0) 3747 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3748 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 3749
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 3750 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 3751 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2569 /* also do poll on <2.6.25, but with normal frequency */
2570 struct statfs sfs;
2571
2572 if (fs_2625 && !statfs (w->path, &sfs))
2573 if (sfs.f_type == 0x1373 /* devfs */
2574 || sfs.f_type == 0xEF53 /* ext2/3 */
2575 || sfs.f_type == 0x3153464a /* jfs */
2576 || sfs.f_type == 0x52654973 /* reiser3 */
2577 || sfs.f_type == 0x01021994 /* tempfs */
2578 || sfs.f_type == 0x58465342 /* xfs */)
2579 return;
2580
2581 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582 ev_timer_again (EV_A_ &w->timer); 3752 ev_timer_again (EV_A_ &w->timer);
2583 } 3753 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 3754}
2585 3755
2586static void noinline 3756static void noinline
2587infy_del (EV_P_ ev_stat *w) 3757infy_del (EV_P_ ev_stat *w)
2588{ 3758{
… …
2591 3761
2592 if (wd < 0) 3762 if (wd < 0)
2593 return; 3763 return;
2594 3764
2595 w->wd = -2; 3765 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3766 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 3767 wlist_del (&fs_hash [slot].head, (WL)w);
2598 3768
2599 /* remove this watcher, if others are watching it, they will rearm */ 3769 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 3770 inotify_rm_watch (fs_fd, wd);
2601} 3771}
… …
2603static void noinline 3773static void noinline
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3774infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 3775{
2606 if (slot < 0) 3776 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 3777 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3778 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 3779 infy_wd (EV_A_ slot, wd, ev);
2610 else 3780 else
2611 { 3781 {
2612 WL w_; 3782 WL w_;
2613 3783
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3784 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 3785 {
2616 ev_stat *w = (ev_stat *)w_; 3786 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 3787 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 3788
2619 if (w->wd == wd || wd == -1) 3789 if (w->wd == wd || wd == -1)
2620 { 3790 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3791 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 3792 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3793 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 3794 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 3795 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 3796 }
2627 3797
2628 stat_timer_cb (EV_A_ &w->timer, 0); 3798 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 3803
2634static void 3804static void
2635infy_cb (EV_P_ ev_io *w, int revents) 3805infy_cb (EV_P_ ev_io *w, int revents)
2636{ 3806{
2637 char buf [EV_INOTIFY_BUFSIZE]; 3807 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 3808 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 3809 int len = read (fs_fd, buf, sizeof (buf));
2641 3810
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3811 for (ofs = 0; ofs < len; )
3812 {
3813 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3814 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3815 ofs += sizeof (struct inotify_event) + ev->len;
3816 }
2644} 3817}
2645 3818
2646inline_size void 3819inline_size void ecb_cold
2647check_2625 (EV_P) 3820ev_check_2625 (EV_P)
2648{ 3821{
2649 /* kernels < 2.6.25 are borked 3822 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3823 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 3824 */
2652 struct utsname buf; 3825 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 3826 return;
2657 3827
2658 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659 return;
2660
2661 if (major < 2
2662 || (major == 2 && minor < 6)
2663 || (major == 2 && minor == 6 && micro < 25))
2664 return;
2665
2666 fs_2625 = 1; 3828 fs_2625 = 1;
3829}
3830
3831inline_size int
3832infy_newfd (void)
3833{
3834#if defined IN_CLOEXEC && defined IN_NONBLOCK
3835 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3836 if (fd >= 0)
3837 return fd;
3838#endif
3839 return inotify_init ();
2667} 3840}
2668 3841
2669inline_size void 3842inline_size void
2670infy_init (EV_P) 3843infy_init (EV_P)
2671{ 3844{
2672 if (fs_fd != -2) 3845 if (fs_fd != -2)
2673 return; 3846 return;
2674 3847
2675 fs_fd = -1; 3848 fs_fd = -1;
2676 3849
2677 check_2625 (EV_A); 3850 ev_check_2625 (EV_A);
2678 3851
2679 fs_fd = inotify_init (); 3852 fs_fd = infy_newfd ();
2680 3853
2681 if (fs_fd >= 0) 3854 if (fs_fd >= 0)
2682 { 3855 {
3856 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3857 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 3858 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 3859 ev_io_start (EV_A_ &fs_w);
3860 ev_unref (EV_A);
2686 } 3861 }
2687} 3862}
2688 3863
2689inline_size void 3864inline_size void
2690infy_fork (EV_P) 3865infy_fork (EV_P)
… …
2692 int slot; 3867 int slot;
2693 3868
2694 if (fs_fd < 0) 3869 if (fs_fd < 0)
2695 return; 3870 return;
2696 3871
3872 ev_ref (EV_A);
3873 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 3874 close (fs_fd);
2698 fs_fd = inotify_init (); 3875 fs_fd = infy_newfd ();
2699 3876
3877 if (fs_fd >= 0)
3878 {
3879 fd_intern (fs_fd);
3880 ev_io_set (&fs_w, fs_fd, EV_READ);
3881 ev_io_start (EV_A_ &fs_w);
3882 ev_unref (EV_A);
3883 }
3884
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3885 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 3886 {
2702 WL w_ = fs_hash [slot].head; 3887 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 3888 fs_hash [slot].head = 0;
2704 3889
2705 while (w_) 3890 while (w_)
… …
2710 w->wd = -1; 3895 w->wd = -1;
2711 3896
2712 if (fs_fd >= 0) 3897 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 3898 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 3899 else
3900 {
3901 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3902 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 3903 ev_timer_again (EV_A_ &w->timer);
3904 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3905 }
2716 } 3906 }
2717 } 3907 }
2718} 3908}
2719 3909
2720#endif 3910#endif
… …
2724#else 3914#else
2725# define EV_LSTAT(p,b) lstat (p, b) 3915# define EV_LSTAT(p,b) lstat (p, b)
2726#endif 3916#endif
2727 3917
2728void 3918void
2729ev_stat_stat (EV_P_ ev_stat *w) 3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2730{ 3920{
2731 if (lstat (w->path, &w->attr) < 0) 3921 if (lstat (w->path, &w->attr) < 0)
2732 w->attr.st_nlink = 0; 3922 w->attr.st_nlink = 0;
2733 else if (!w->attr.st_nlink) 3923 else if (!w->attr.st_nlink)
2734 w->attr.st_nlink = 1; 3924 w->attr.st_nlink = 1;
… …
2737static void noinline 3927static void noinline
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3928stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 3929{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3930 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 3931
2742 /* we copy this here each the time so that */ 3932 ev_statdata prev = w->attr;
2743 /* prev has the old value when the callback gets invoked */
2744 w->prev = w->attr;
2745 ev_stat_stat (EV_A_ w); 3933 ev_stat_stat (EV_A_ w);
2746 3934
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3935 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 3936 if (
2749 w->prev.st_dev != w->attr.st_dev 3937 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 3938 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 3939 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 3940 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 3941 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 3942 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 3943 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 3944 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 3945 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 3946 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 3947 || prev.st_ctime != w->attr.st_ctime
2760 ) { 3948 ) {
3949 /* we only update w->prev on actual differences */
3950 /* in case we test more often than invoke the callback, */
3951 /* to ensure that prev is always different to attr */
3952 w->prev = prev;
3953
2761 #if EV_USE_INOTIFY 3954 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 3955 if (fs_fd >= 0)
2763 { 3956 {
2764 infy_del (EV_A_ w); 3957 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 3958 infy_add (EV_A_ w);
… …
2770 ev_feed_event (EV_A_ w, EV_STAT); 3963 ev_feed_event (EV_A_ w, EV_STAT);
2771 } 3964 }
2772} 3965}
2773 3966
2774void 3967void
2775ev_stat_start (EV_P_ ev_stat *w) 3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2776{ 3969{
2777 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
2778 return; 3971 return;
2779 3972
2780 ev_stat_stat (EV_A_ w); 3973 ev_stat_stat (EV_A_ w);
… …
2790 3983
2791 if (fs_fd >= 0) 3984 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 3985 infy_add (EV_A_ w);
2793 else 3986 else
2794#endif 3987#endif
3988 {
2795 ev_timer_again (EV_A_ &w->timer); 3989 ev_timer_again (EV_A_ &w->timer);
3990 ev_unref (EV_A);
3991 }
2796 3992
2797 ev_start (EV_A_ (W)w, 1); 3993 ev_start (EV_A_ (W)w, 1);
2798 3994
2799 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
2800} 3996}
2801 3997
2802void 3998void
2803ev_stat_stop (EV_P_ ev_stat *w) 3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2804{ 4000{
2805 clear_pending (EV_A_ (W)w); 4001 clear_pending (EV_A_ (W)w);
2806 if (expect_false (!ev_is_active (w))) 4002 if (expect_false (!ev_is_active (w)))
2807 return; 4003 return;
2808 4004
2809 EV_FREQUENT_CHECK; 4005 EV_FREQUENT_CHECK;
2810 4006
2811#if EV_USE_INOTIFY 4007#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 4008 infy_del (EV_A_ w);
2813#endif 4009#endif
4010
4011 if (ev_is_active (&w->timer))
4012 {
4013 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 4014 ev_timer_stop (EV_A_ &w->timer);
4015 }
2815 4016
2816 ev_stop (EV_A_ (W)w); 4017 ev_stop (EV_A_ (W)w);
2817 4018
2818 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
2819} 4020}
2820#endif 4021#endif
2821 4022
2822#if EV_IDLE_ENABLE 4023#if EV_IDLE_ENABLE
2823void 4024void
2824ev_idle_start (EV_P_ ev_idle *w) 4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2825{ 4026{
2826 if (expect_false (ev_is_active (w))) 4027 if (expect_false (ev_is_active (w)))
2827 return; 4028 return;
2828 4029
2829 pri_adjust (EV_A_ (W)w); 4030 pri_adjust (EV_A_ (W)w);
… …
2842 4043
2843 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
2844} 4045}
2845 4046
2846void 4047void
2847ev_idle_stop (EV_P_ ev_idle *w) 4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2848{ 4049{
2849 clear_pending (EV_A_ (W)w); 4050 clear_pending (EV_A_ (W)w);
2850 if (expect_false (!ev_is_active (w))) 4051 if (expect_false (!ev_is_active (w)))
2851 return; 4052 return;
2852 4053
… …
2864 4065
2865 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2866} 4067}
2867#endif 4068#endif
2868 4069
4070#if EV_PREPARE_ENABLE
2869void 4071void
2870ev_prepare_start (EV_P_ ev_prepare *w) 4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2871{ 4073{
2872 if (expect_false (ev_is_active (w))) 4074 if (expect_false (ev_is_active (w)))
2873 return; 4075 return;
2874 4076
2875 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
… …
2880 4082
2881 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
2882} 4084}
2883 4085
2884void 4086void
2885ev_prepare_stop (EV_P_ ev_prepare *w) 4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2886{ 4088{
2887 clear_pending (EV_A_ (W)w); 4089 clear_pending (EV_A_ (W)w);
2888 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
2889 return; 4091 return;
2890 4092
… …
2899 4101
2900 ev_stop (EV_A_ (W)w); 4102 ev_stop (EV_A_ (W)w);
2901 4103
2902 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
2903} 4105}
4106#endif
2904 4107
4108#if EV_CHECK_ENABLE
2905void 4109void
2906ev_check_start (EV_P_ ev_check *w) 4110ev_check_start (EV_P_ ev_check *w) EV_THROW
2907{ 4111{
2908 if (expect_false (ev_is_active (w))) 4112 if (expect_false (ev_is_active (w)))
2909 return; 4113 return;
2910 4114
2911 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
… …
2916 4120
2917 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
2918} 4122}
2919 4123
2920void 4124void
2921ev_check_stop (EV_P_ ev_check *w) 4125ev_check_stop (EV_P_ ev_check *w) EV_THROW
2922{ 4126{
2923 clear_pending (EV_A_ (W)w); 4127 clear_pending (EV_A_ (W)w);
2924 if (expect_false (!ev_is_active (w))) 4128 if (expect_false (!ev_is_active (w)))
2925 return; 4129 return;
2926 4130
… …
2935 4139
2936 ev_stop (EV_A_ (W)w); 4140 ev_stop (EV_A_ (W)w);
2937 4141
2938 EV_FREQUENT_CHECK; 4142 EV_FREQUENT_CHECK;
2939} 4143}
4144#endif
2940 4145
2941#if EV_EMBED_ENABLE 4146#if EV_EMBED_ENABLE
2942void noinline 4147void noinline
2943ev_embed_sweep (EV_P_ ev_embed *w) 4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2944{ 4149{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 4150 ev_run (w->other, EVRUN_NOWAIT);
2946} 4151}
2947 4152
2948static void 4153static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 4154embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 4155{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4156 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 4157
2953 if (ev_cb (w)) 4158 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4159 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 4160 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 4161 ev_run (w->other, EVRUN_NOWAIT);
2957} 4162}
2958 4163
2959static void 4164static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4165embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 4166{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4167 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 4168
2964 { 4169 {
2965 struct ev_loop *loop = w->other; 4170 EV_P = w->other;
2966 4171
2967 while (fdchangecnt) 4172 while (fdchangecnt)
2968 { 4173 {
2969 fd_reify (EV_A); 4174 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4175 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 4176 }
2972 } 4177 }
2973} 4178}
2974 4179
2975static void 4180static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4183 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 4184
2980 ev_embed_stop (EV_A_ w); 4185 ev_embed_stop (EV_A_ w);
2981 4186
2982 { 4187 {
2983 struct ev_loop *loop = w->other; 4188 EV_P = w->other;
2984 4189
2985 ev_loop_fork (EV_A); 4190 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4191 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 4192 }
2988 4193
2989 ev_embed_start (EV_A_ w); 4194 ev_embed_start (EV_A_ w);
2990} 4195}
2991 4196
… …
2996 ev_idle_stop (EV_A_ idle); 4201 ev_idle_stop (EV_A_ idle);
2997} 4202}
2998#endif 4203#endif
2999 4204
3000void 4205void
3001ev_embed_start (EV_P_ ev_embed *w) 4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3002{ 4207{
3003 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
3004 return; 4209 return;
3005 4210
3006 { 4211 {
3007 struct ev_loop *loop = w->other; 4212 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4213 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3009 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4214 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 4215 }
3011 4216
3012 EV_FREQUENT_CHECK; 4217 EV_FREQUENT_CHECK;
… …
3027 4232
3028 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3029} 4234}
3030 4235
3031void 4236void
3032ev_embed_stop (EV_P_ ev_embed *w) 4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3033{ 4238{
3034 clear_pending (EV_A_ (W)w); 4239 clear_pending (EV_A_ (W)w);
3035 if (expect_false (!ev_is_active (w))) 4240 if (expect_false (!ev_is_active (w)))
3036 return; 4241 return;
3037 4242
… …
3039 4244
3040 ev_io_stop (EV_A_ &w->io); 4245 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 4246 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 4247 ev_fork_stop (EV_A_ &w->fork);
3043 4248
4249 ev_stop (EV_A_ (W)w);
4250
3044 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
3045} 4252}
3046#endif 4253#endif
3047 4254
3048#if EV_FORK_ENABLE 4255#if EV_FORK_ENABLE
3049void 4256void
3050ev_fork_start (EV_P_ ev_fork *w) 4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3051{ 4258{
3052 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
3053 return; 4260 return;
3054 4261
3055 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
… …
3060 4267
3061 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3062} 4269}
3063 4270
3064void 4271void
3065ev_fork_stop (EV_P_ ev_fork *w) 4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3066{ 4273{
3067 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3068 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3069 return; 4276 return;
3070 4277
… …
3081 4288
3082 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3083} 4290}
3084#endif 4291#endif
3085 4292
4293#if EV_CLEANUP_ENABLE
4294void
4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4296{
4297 if (expect_false (ev_is_active (w)))
4298 return;
4299
4300 EV_FREQUENT_CHECK;
4301
4302 ev_start (EV_A_ (W)w, ++cleanupcnt);
4303 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4304 cleanups [cleanupcnt - 1] = w;
4305
4306 /* cleanup watchers should never keep a refcount on the loop */
4307 ev_unref (EV_A);
4308 EV_FREQUENT_CHECK;
4309}
4310
4311void
4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4313{
4314 clear_pending (EV_A_ (W)w);
4315 if (expect_false (!ev_is_active (w)))
4316 return;
4317
4318 EV_FREQUENT_CHECK;
4319 ev_ref (EV_A);
4320
4321 {
4322 int active = ev_active (w);
4323
4324 cleanups [active - 1] = cleanups [--cleanupcnt];
4325 ev_active (cleanups [active - 1]) = active;
4326 }
4327
4328 ev_stop (EV_A_ (W)w);
4329
4330 EV_FREQUENT_CHECK;
4331}
4332#endif
4333
3086#if EV_ASYNC_ENABLE 4334#if EV_ASYNC_ENABLE
3087void 4335void
3088ev_async_start (EV_P_ ev_async *w) 4336ev_async_start (EV_P_ ev_async *w) EV_THROW
3089{ 4337{
3090 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3091 return; 4339 return;
4340
4341 w->sent = 0;
3092 4342
3093 evpipe_init (EV_A); 4343 evpipe_init (EV_A);
3094 4344
3095 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3096 4346
… …
3100 4350
3101 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3102} 4352}
3103 4353
3104void 4354void
3105ev_async_stop (EV_P_ ev_async *w) 4355ev_async_stop (EV_P_ ev_async *w) EV_THROW
3106{ 4356{
3107 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3109 return; 4359 return;
3110 4360
… …
3121 4371
3122 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3123} 4373}
3124 4374
3125void 4375void
3126ev_async_send (EV_P_ ev_async *w) 4376ev_async_send (EV_P_ ev_async *w) EV_THROW
3127{ 4377{
3128 w->sent = 1; 4378 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 4379 evpipe_write (EV_A_ &async_pending);
3130} 4380}
3131#endif 4381#endif
3132 4382
3133/*****************************************************************************/ 4383/*****************************************************************************/
3134 4384
… …
3168 4418
3169 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3170} 4420}
3171 4421
3172void 4422void
3173ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3174{ 4424{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176 4426
3177 if (expect_false (!once)) 4427 if (expect_false (!once))
3178 { 4428 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4429 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3180 return; 4430 return;
3181 } 4431 }
3182 4432
3183 once->cb = cb; 4433 once->cb = cb;
3184 once->arg = arg; 4434 once->arg = arg;
… …
3198 } 4448 }
3199} 4449}
3200 4450
3201/*****************************************************************************/ 4451/*****************************************************************************/
3202 4452
3203#if 0 4453#if EV_WALK_ENABLE
3204void 4454void ecb_cold
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3206{ 4456{
3207 int i, j; 4457 int i, j;
3208 ev_watcher_list *wl, *wn; 4458 ev_watcher_list *wl, *wn;
3209 4459
3210 if (types & (EV_IO | EV_EMBED)) 4460 if (types & (EV_IO | EV_EMBED))
… …
3224#if EV_USE_INOTIFY 4474#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 4475 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 4476 ;
3227 else 4477 else
3228#endif 4478#endif
3229 if ((ev_io *)wl != &pipeev) 4479 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 4480 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 4481 cb (EV_A_ EV_IO, wl);
3232 4482
3233 wl = wn; 4483 wl = wn;
3234 } 4484 }
… …
3253 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4503 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3254#endif 4504#endif
3255 4505
3256#if EV_IDLE_ENABLE 4506#if EV_IDLE_ENABLE
3257 if (types & EV_IDLE) 4507 if (types & EV_IDLE)
3258 for (j = NUMPRI; i--; ) 4508 for (j = NUMPRI; j--; )
3259 for (i = idlecnt [j]; i--; ) 4509 for (i = idlecnt [j]; i--; )
3260 cb (EV_A_ EV_IDLE, idles [j][i]); 4510 cb (EV_A_ EV_IDLE, idles [j][i]);
3261#endif 4511#endif
3262 4512
3263#if EV_FORK_ENABLE 4513#if EV_FORK_ENABLE
… …
3271 if (types & EV_ASYNC) 4521 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 4522 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 4523 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 4524#endif
3275 4525
4526#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 4527 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 4528 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 4529# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 4530 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 4531# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 4532 cb (EV_A_ EV_PREPARE, prepares [i]);
4533#endif
3282 4534
4535#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 4536 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 4537 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 4538 cb (EV_A_ EV_CHECK, checks [i]);
4539#endif
3286 4540
4541#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 4542 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 4543 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 4544 for (wl = signals [i].head; wl; )
3290 { 4545 {
3291 wn = wl->next; 4546 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 4547 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 4548 wl = wn;
3294 } 4549 }
4550#endif
3295 4551
4552#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 4553 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 4554 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 4555 for (wl = childs [i]; wl; )
3299 { 4556 {
3300 wn = wl->next; 4557 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 4558 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 4559 wl = wn;
3303 } 4560 }
4561#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 4562/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4563/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 4564}
3307#endif 4565#endif
3308 4566
3309#if EV_MULTIPLICITY 4567#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 4568 #include "ev_wrap.h"
3311#endif 4569#endif
3312 4570
3313#ifdef __cplusplus
3314}
3315#endif
3316

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