ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC vs.
Revision 1.476 by root, Fri May 1 17:23:34 2015 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
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
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
159# include <io.h> 204# include <io.h>
160# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
161# include <windows.h> 207# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
164# endif 210# endif
211# undef EV_AVOID_STDIO
165#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
166 221
167/* 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 */
168 223
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# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247#endif
248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
251#endif
252
253#ifndef EV_USE_CLOCK_SYSCALL
254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
256# else
257# define EV_USE_CLOCK_SYSCALL 0
258# endif
259#endif
260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
169#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 273# else
173# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
174# endif 275# endif
175#endif 276#endif
176 277
177#ifndef EV_USE_REALTIME 278#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 280#endif
180 281
181#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 285# else
185# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
186# endif 287# endif
187#endif 288#endif
188 289
189#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 292#endif
192 293
193#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
194# ifdef _WIN32 295# ifdef _WIN32
195# define EV_USE_POLL 0 296# define EV_USE_POLL 0
196# else 297# else
197# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 299# endif
199#endif 300#endif
200 301
201#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 305# else
205# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
206# endif 307# endif
207#endif 308#endif
208 309
… …
214# define EV_USE_PORT 0 315# define EV_USE_PORT 0
215#endif 316#endif
216 317
217#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 321# else
221# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
222# endif 323# endif
223#endif 324#endif
224 325
225#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 328#endif
232 329
233#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 332#endif
240 333
241#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 337# else
245# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
339# endif
340#endif
341
342#ifndef EV_USE_SIGNALFD
343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
344# define EV_USE_SIGNALFD EV_FEATURE_OS
345# else
346# define EV_USE_SIGNALFD 0
246# endif 347# endif
247#endif 348#endif
248 349
249#if 0 /* debugging */ 350#if 0 /* debugging */
250# define EV_VERIFY 3 351# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
253#endif 354#endif
254 355
255#ifndef EV_VERIFY 356#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 358#endif
258 359
259#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 362#endif
262 363
263#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
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
383
384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
385/* which makes programs even slower. might work on other unices, too. */
386#if EV_USE_CLOCK_SYSCALL
387# include <sys/syscall.h>
388# ifdef SYS_clock_gettime
389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
390# undef EV_USE_MONOTONIC
391# define EV_USE_MONOTONIC 1
392# else
393# undef EV_USE_CLOCK_SYSCALL
394# define EV_USE_CLOCK_SYSCALL 0
395# endif
265#endif 396#endif
266 397
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
268 399
269#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
… …
280# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
282#endif 413#endif
283 414
284#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
286# include <sys/select.h> 418# include <sys/select.h>
287# endif 419# endif
288#endif 420#endif
289 421
290#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
291# include <sys/utsname.h> 423# include <sys/statfs.h>
292# include <sys/inotify.h> 424# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
297# endif 429# endif
298#endif 430#endif
299 431
300#if EV_SELECT_IS_WINSOCKET
301# include <winsock.h>
302#endif
303
304#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 434# include <stdint.h>
307# ifdef __cplusplus 435# ifndef EFD_NONBLOCK
308extern "C" { 436# define EFD_NONBLOCK O_NONBLOCK
309# endif 437# endif
310int eventfd (unsigned int initval, int flags); 438# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 439# ifdef O_CLOEXEC
312} 440# define EFD_CLOEXEC O_CLOEXEC
441# else
442# define EFD_CLOEXEC 02000000
443# endif
313# endif 444# endif
445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
446#endif
447
448#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
450# include <stdint.h>
451# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK
453# endif
454# ifndef SFD_CLOEXEC
455# ifdef O_CLOEXEC
456# define SFD_CLOEXEC O_CLOEXEC
457# else
458# define SFD_CLOEXEC 02000000
459# endif
460# endif
461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
462
463struct signalfd_siginfo
464{
465 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)];
467};
314#endif 468#endif
315 469
316/**/ 470/**/
317 471
318#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 474#else
321# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
322#endif 476#endif
323 477
324/* 478/*
325 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 481 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
333 484
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
338#if __GNUC__ >= 4 546 #if __GNUC__
339# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
340# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
341#else 562#else
342# define expect(expr,value) (expr) 563 #include <inttypes.h>
343# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
345# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
346# endif 569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
347#endif 580 #endif
581#endif
348 582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
654 #if __i386 || __i386__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !__sparcv8
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
674 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
675 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
676 #elif defined __s390__ || defined __s390x__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
678 #elif defined __mips__
679 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
680 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
682 #elif defined __alpha__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
684 #elif defined __hppa__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
687 #elif defined __ia64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
689 #elif defined __m68k__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
691 #elif defined __m88k__
692 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
693 #elif defined __sh__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
695 #endif
696 #endif
697#endif
698
699#ifndef ECB_MEMORY_FENCE
700 #if ECB_GCC_VERSION(4,7)
701 /* see comment below (stdatomic.h) about the C11 memory model. */
702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
705
706 #elif ECB_CLANG_EXTENSION(c_atomic)
707 /* see comment below (stdatomic.h) about the C11 memory model. */
708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
711
712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
713 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
720 #elif _MSC_VER >= 1400 /* VC++ 2005 */
721 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
722 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
724 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
725 #elif defined _WIN32
726 #include <WinNT.h>
727 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
728 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #include <mbarrier.h>
730 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
731 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
732 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
733 #elif __xlC__
734 #define ECB_MEMORY_FENCE __sync ()
735 #endif
736#endif
737
738#ifndef ECB_MEMORY_FENCE
739 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
740 /* we assume that these memory fences work on all variables/all memory accesses, */
741 /* not just C11 atomics and atomic accesses */
742 #include <stdatomic.h>
743 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
744 /* any fence other than seq_cst, which isn't very efficient for us. */
745 /* Why that is, we don't know - either the C11 memory model is quite useless */
746 /* for most usages, or gcc and clang have a bug */
747 /* I *currently* lean towards the latter, and inefficiently implement */
748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
751 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if !ECB_AVOID_PTHREADS
757 /*
758 * if you get undefined symbol references to pthread_mutex_lock,
759 * or failure to find pthread.h, then you should implement
760 * the ECB_MEMORY_FENCE operations for your cpu/compiler
761 * OR provide pthread.h and link against the posix thread library
762 * of your system.
763 */
764 #include <pthread.h>
765 #define ECB_NEEDS_PTHREADS 1
766 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
767
768 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
769 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
770 #endif
771#endif
772
773#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
774 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
775#endif
776
777#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
779#endif
780
781/*****************************************************************************/
782
783#if ECB_CPP
784 #define ecb_inline static inline
785#elif ECB_GCC_VERSION(2,5)
786 #define ecb_inline static __inline__
787#elif ECB_C99
788 #define ecb_inline static inline
789#else
790 #define ecb_inline static
791#endif
792
793#if ECB_GCC_VERSION(3,3)
794 #define ecb_restrict __restrict__
795#elif ECB_C99
796 #define ecb_restrict restrict
797#else
798 #define ecb_restrict
799#endif
800
801typedef int ecb_bool;
802
803#define ECB_CONCAT_(a, b) a ## b
804#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
805#define ECB_STRINGIFY_(a) # a
806#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
807#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
808
809#define ecb_function_ ecb_inline
810
811#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
812 #define ecb_attribute(attrlist) __attribute__ (attrlist)
813#else
814 #define ecb_attribute(attrlist)
815#endif
816
817#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
818 #define ecb_is_constant(expr) __builtin_constant_p (expr)
819#else
820 /* possible C11 impl for integral types
821 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
822 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
823
824 #define ecb_is_constant(expr) 0
825#endif
826
827#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
828 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
829#else
830 #define ecb_expect(expr,value) (expr)
831#endif
832
833#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
834 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
835#else
836 #define ecb_prefetch(addr,rw,locality)
837#endif
838
839/* no emulation for ecb_decltype */
840#if ECB_CPP11
841 // older implementations might have problems with decltype(x)::type, work around it
842 template<class T> struct ecb_decltype_t { typedef T type; };
843 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
844#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
845 #define ecb_decltype(x) __typeof__ (x)
846#endif
847
848#if _MSC_VER >= 1300
849 #define ecb_deprecated __declspec (deprecated)
850#else
851 #define ecb_deprecated ecb_attribute ((__deprecated__))
852#endif
853
854#if _MSC_VER >= 1500
855 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
856#elif ECB_GCC_VERSION(4,5)
857 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
858#else
859 #define ecb_deprecated_message(msg) ecb_deprecated
860#endif
861
862#if _MSC_VER >= 1400
863 #define ecb_noinline __declspec (noinline)
864#else
865 #define ecb_noinline ecb_attribute ((__noinline__))
866#endif
867
868#define ecb_unused ecb_attribute ((__unused__))
869#define ecb_const ecb_attribute ((__const__))
870#define ecb_pure ecb_attribute ((__pure__))
871
872#if ECB_C11 || __IBMC_NORETURN
873 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
874 #define ecb_noreturn _Noreturn
875#elif ECB_CPP11
876 #define ecb_noreturn [[noreturn]]
877#elif _MSC_VER >= 1200
878 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
879 #define ecb_noreturn __declspec (noreturn)
880#else
881 #define ecb_noreturn ecb_attribute ((__noreturn__))
882#endif
883
884#if ECB_GCC_VERSION(4,3)
885 #define ecb_artificial ecb_attribute ((__artificial__))
886 #define ecb_hot ecb_attribute ((__hot__))
887 #define ecb_cold ecb_attribute ((__cold__))
888#else
889 #define ecb_artificial
890 #define ecb_hot
891 #define ecb_cold
892#endif
893
894/* put around conditional expressions if you are very sure that the */
895/* expression is mostly true or mostly false. note that these return */
896/* booleans, not the expression. */
349#define expect_false(expr) expect ((expr) != 0, 0) 897#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 898#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
899/* for compatibility to the rest of the world */
900#define ecb_likely(expr) ecb_expect_true (expr)
901#define ecb_unlikely(expr) ecb_expect_false (expr)
902
903/* count trailing zero bits and count # of one bits */
904#if ECB_GCC_VERSION(3,4) \
905 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
906 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
907 && ECB_CLANG_BUILTIN(__builtin_popcount))
908 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
909 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
910 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
911 #define ecb_ctz32(x) __builtin_ctz (x)
912 #define ecb_ctz64(x) __builtin_ctzll (x)
913 #define ecb_popcount32(x) __builtin_popcount (x)
914 /* no popcountll */
915#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x)
919 {
920 int r = 0;
921
922 x &= ~x + 1; /* this isolates the lowest bit */
923
924#if ECB_branchless_on_i386
925 r += !!(x & 0xaaaaaaaa) << 0;
926 r += !!(x & 0xcccccccc) << 1;
927 r += !!(x & 0xf0f0f0f0) << 2;
928 r += !!(x & 0xff00ff00) << 3;
929 r += !!(x & 0xffff0000) << 4;
930#else
931 if (x & 0xaaaaaaaa) r += 1;
932 if (x & 0xcccccccc) r += 2;
933 if (x & 0xf0f0f0f0) r += 4;
934 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16;
936#endif
937
938 return r;
939 }
940
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x)
944 {
945 int shift = x & 0xffffffffU ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift;
947 }
948
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x)
952 {
953 x -= (x >> 1) & 0x55555555;
954 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
955 x = ((x >> 4) + x) & 0x0f0f0f0f;
956 x *= 0x01010101;
957
958 return x >> 24;
959 }
960
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 {
964 int r = 0;
965
966 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; }
971
972 return r;
973 }
974
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 {
978 int r = 0;
979
980 if (x >> 32) { x >>= 32; r += 32; }
981
982 return r + ecb_ld32 (x);
983 }
984#endif
985
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
988ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
989ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
990
991ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
992ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
993{
994 return ( (x * 0x0802U & 0x22110U)
995 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
996}
997
998ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
999ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1000{
1001 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1002 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1003 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1004 x = ( x >> 8 ) | ( x << 8);
1005
1006 return x;
1007}
1008
1009ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1010ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1011{
1012 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1013 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1014 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1015 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1016 x = ( x >> 16 ) | ( x << 16);
1017
1018 return x;
1019}
1020
1021/* popcount64 is only available on 64 bit cpus as gcc builtin */
1022/* so for this version we are lazy */
1023ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1024ecb_function_ ecb_const int
1025ecb_popcount64 (uint64_t x)
1026{
1027 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1028}
1029
1030ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1031ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1032ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1033ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1034ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1035ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1036ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1037ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1038
1039ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1040ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1041ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1042ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1043ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1044ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1045ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1046ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1047
1048#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1049 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1050 #define ecb_bswap16(x) __builtin_bswap16 (x)
1051 #else
1052 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1053 #endif
1054 #define ecb_bswap32(x) __builtin_bswap32 (x)
1055 #define ecb_bswap64(x) __builtin_bswap64 (x)
1056#elif _MSC_VER
1057 #include <stdlib.h>
1058 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1059 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1060 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1061#else
1062 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1063 ecb_function_ ecb_const uint16_t
1064 ecb_bswap16 (uint16_t x)
1065 {
1066 return ecb_rotl16 (x, 8);
1067 }
1068
1069 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1070 ecb_function_ ecb_const uint32_t
1071 ecb_bswap32 (uint32_t x)
1072 {
1073 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1074 }
1075
1076 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1077 ecb_function_ ecb_const uint64_t
1078 ecb_bswap64 (uint64_t x)
1079 {
1080 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1081 }
1082#endif
1083
1084#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1085 #define ecb_unreachable() __builtin_unreachable ()
1086#else
1087 /* this seems to work fine, but gcc always emits a warning for it :/ */
1088 ecb_inline ecb_noreturn void ecb_unreachable (void);
1089 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1090#endif
1091
1092/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char
1097ecb_byteorder_helper (void)
1098{
1099 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */
1103 /* is to avoid it in all cases, at least on common architectures */
1104 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1108 return 0x44;
1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1110 return 0x11;
1111#else
1112 union
1113 {
1114 uint32_t i;
1115 uint8_t c;
1116 } u = { 0x11223344 };
1117 return u.c;
1118#endif
1119}
1120
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1125
1126#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1128#else
1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1130#endif
1131
1132#if ECB_CPP
1133 template<typename T>
1134 static inline T ecb_div_rd (T val, T div)
1135 {
1136 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1137 }
1138 template<typename T>
1139 static inline T ecb_div_ru (T val, T div)
1140 {
1141 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1142 }
1143#else
1144 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1145 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1146#endif
1147
1148#if ecb_cplusplus_does_not_suck
1149 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1150 template<typename T, int N>
1151 static inline int ecb_array_length (const T (&arr)[N])
1152 {
1153 return N;
1154 }
1155#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#endif
1158
1159/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161
1162/* basically, everything uses "ieee pure-endian" floating point numbers */
1163/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1164#if 0 \
1165 || __i386 || __i386__ \
1166 || ECB_GCC_AMD64 \
1167 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1168 || defined __s390__ || defined __s390x__ \
1169 || defined __mips__ \
1170 || defined __alpha__ \
1171 || defined __hppa__ \
1172 || defined __ia64__ \
1173 || defined __m68k__ \
1174 || defined __m88k__ \
1175 || defined __sh__ \
1176 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1177 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1178 || defined __aarch64__
1179 #define ECB_STDFP 1
1180 #include <string.h> /* for memcpy */
1181#else
1182 #define ECB_STDFP 0
1183#endif
1184
1185#ifndef ECB_NO_LIBM
1186
1187 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1188
1189 /* only the oldest of old doesn't have this one. solaris. */
1190 #ifdef INFINITY
1191 #define ECB_INFINITY INFINITY
1192 #else
1193 #define ECB_INFINITY HUGE_VAL
1194 #endif
1195
1196 #ifdef NAN
1197 #define ECB_NAN NAN
1198 #else
1199 #define ECB_NAN ECB_INFINITY
1200 #endif
1201
1202 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1203 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1204 #define ecb_frexpf(x,e) frexpf ((x), (e))
1205 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif
1209
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */
1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1229 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x)
1231 {
1232 uint32_t r;
1233
1234 #if ECB_STDFP
1235 memcpy (&r, &x, 4);
1236 #else
1237 /* slow emulation, works for anything but -0 */
1238 uint32_t m;
1239 int e;
1240
1241 if (x == 0e0f ) return 0x00000000U;
1242 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1243 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1244 if (x != x ) return 0x7fbfffffU;
1245
1246 m = ecb_frexpf (x, &e) * 0x1000000U;
1247
1248 r = m & 0x80000000U;
1249
1250 if (r)
1251 m = -m;
1252
1253 if (e <= -126)
1254 {
1255 m &= 0xffffffU;
1256 m >>= (-125 - e);
1257 e = -126;
1258 }
1259
1260 r |= (e + 126) << 23;
1261 r |= m & 0x7fffffU;
1262 #endif
1263
1264 return r;
1265 }
1266
1267 /* converts an ieee single/binary32 to a float */
1268 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1269 ecb_function_ ecb_const float
1270 ecb_binary32_to_float (uint32_t x)
1271 {
1272 float r;
1273
1274 #if ECB_STDFP
1275 memcpy (&r, &x, 4);
1276 #else
1277 /* emulation, only works for normals and subnormals and +0 */
1278 int neg = x >> 31;
1279 int e = (x >> 23) & 0xffU;
1280
1281 x &= 0x7fffffU;
1282
1283 if (e)
1284 x |= 0x800000U;
1285 else
1286 e = 1;
1287
1288 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1289 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1290
1291 r = neg ? -r : r;
1292 #endif
1293
1294 return r;
1295 }
1296
1297 /* convert a double to ieee double/binary64 */
1298 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1299 ecb_function_ ecb_const uint64_t
1300 ecb_double_to_binary64 (double x)
1301 {
1302 uint64_t r;
1303
1304 #if ECB_STDFP
1305 memcpy (&r, &x, 8);
1306 #else
1307 /* slow emulation, works for anything but -0 */
1308 uint64_t m;
1309 int e;
1310
1311 if (x == 0e0 ) return 0x0000000000000000U;
1312 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1313 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1314 if (x != x ) return 0X7ff7ffffffffffffU;
1315
1316 m = frexp (x, &e) * 0x20000000000000U;
1317
1318 r = m & 0x8000000000000000;;
1319
1320 if (r)
1321 m = -m;
1322
1323 if (e <= -1022)
1324 {
1325 m &= 0x1fffffffffffffU;
1326 m >>= (-1021 - e);
1327 e = -1022;
1328 }
1329
1330 r |= ((uint64_t)(e + 1022)) << 52;
1331 r |= m & 0xfffffffffffffU;
1332 #endif
1333
1334 return r;
1335 }
1336
1337 /* converts an ieee double/binary64 to a double */
1338 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1339 ecb_function_ ecb_const double
1340 ecb_binary64_to_double (uint64_t x)
1341 {
1342 double r;
1343
1344 #if ECB_STDFP
1345 memcpy (&r, &x, 8);
1346 #else
1347 /* emulation, only works for normals and subnormals and +0 */
1348 int neg = x >> 63;
1349 int e = (x >> 52) & 0x7ffU;
1350
1351 x &= 0xfffffffffffffU;
1352
1353 if (e)
1354 x |= 0x10000000000000U;
1355 else
1356 e = 1;
1357
1358 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1359 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1360
1361 r = neg ? -r : r;
1362 #endif
1363
1364 return r;
1365 }
1366
1367#endif
1368
1369#endif
1370
1371/* ECB.H END */
1372
1373#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1374/* if your architecture doesn't need memory fences, e.g. because it is
1375 * single-cpu/core, or if you use libev in a project that doesn't use libev
1376 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1377 * libev, in which cases the memory fences become nops.
1378 * alternatively, you can remove this #error and link against libpthread,
1379 * which will then provide the memory fences.
1380 */
1381# error "memory fences not defined for your architecture, please report"
1382#endif
1383
1384#ifndef ECB_MEMORY_FENCE
1385# define ECB_MEMORY_FENCE do { } while (0)
1386# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1387# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1388#endif
1389
1390#define expect_false(cond) ecb_expect_false (cond)
1391#define expect_true(cond) ecb_expect_true (cond)
1392#define noinline ecb_noinline
1393
351#define inline_size static inline 1394#define inline_size ecb_inline
352 1395
353#if EV_MINIMAL 1396#if EV_FEATURE_CODE
1397# define inline_speed ecb_inline
1398#else
354# define inline_speed static noinline 1399# define inline_speed static noinline
1400#endif
1401
1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1403
1404#if EV_MINPRI == EV_MAXPRI
1405# define ABSPRI(w) (((W)w), 0)
355#else 1406#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1407# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1408#endif
361 1409
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1410#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 1411#define EMPTY2(a,b) /* used to suppress some warnings */
364 1412
365typedef ev_watcher *W; 1413typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 1415typedef ev_watcher_time *WT;
368 1416
369#define ev_active(w) ((W)(w))->active 1417#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 1418#define ev_at(w) ((WT)(w))->at
371 1419
1420#if EV_USE_REALTIME
1421/* sig_atomic_t is used to avoid per-thread variables or locking but still */
1422/* giving it a reasonably high chance of working on typical architectures */
1423static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
1424#endif
1425
372#if EV_USE_MONOTONIC 1426#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1427static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
1428#endif
1429
1430#ifndef EV_FD_TO_WIN32_HANDLE
1431# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1432#endif
1433#ifndef EV_WIN32_HANDLE_TO_FD
1434# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1435#endif
1436#ifndef EV_WIN32_CLOSE_FD
1437# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 1438#endif
377 1439
378#ifdef _WIN32 1440#ifdef _WIN32
379# include "ev_win32.c" 1441# include "ev_win32.c"
380#endif 1442#endif
381 1443
382/*****************************************************************************/ 1444/*****************************************************************************/
383 1445
1446/* define a suitable floor function (only used by periodics atm) */
1447
1448#if EV_USE_FLOOR
1449# include <math.h>
1450# define ev_floor(v) floor (v)
1451#else
1452
1453#include <float.h>
1454
1455/* a floor() replacement function, should be independent of ev_tstamp type */
1456static ev_tstamp noinline
1457ev_floor (ev_tstamp v)
1458{
1459 /* the choice of shift factor is not terribly important */
1460#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1461 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1462#else
1463 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1464#endif
1465
1466 /* argument too large for an unsigned long? */
1467 if (expect_false (v >= shift))
1468 {
1469 ev_tstamp f;
1470
1471 if (v == v - 1.)
1472 return v; /* very large number */
1473
1474 f = shift * ev_floor (v * (1. / shift));
1475 return f + ev_floor (v - f);
1476 }
1477
1478 /* special treatment for negative args? */
1479 if (expect_false (v < 0.))
1480 {
1481 ev_tstamp f = -ev_floor (-v);
1482
1483 return f - (f == v ? 0 : 1);
1484 }
1485
1486 /* fits into an unsigned long */
1487 return (unsigned long)v;
1488}
1489
1490#endif
1491
1492/*****************************************************************************/
1493
1494#ifdef __linux
1495# include <sys/utsname.h>
1496#endif
1497
1498static unsigned int noinline ecb_cold
1499ev_linux_version (void)
1500{
1501#ifdef __linux
1502 unsigned int v = 0;
1503 struct utsname buf;
1504 int i;
1505 char *p = buf.release;
1506
1507 if (uname (&buf))
1508 return 0;
1509
1510 for (i = 3+1; --i; )
1511 {
1512 unsigned int c = 0;
1513
1514 for (;;)
1515 {
1516 if (*p >= '0' && *p <= '9')
1517 c = c * 10 + *p++ - '0';
1518 else
1519 {
1520 p += *p == '.';
1521 break;
1522 }
1523 }
1524
1525 v = (v << 8) | c;
1526 }
1527
1528 return v;
1529#else
1530 return 0;
1531#endif
1532}
1533
1534/*****************************************************************************/
1535
1536#if EV_AVOID_STDIO
1537static void noinline ecb_cold
1538ev_printerr (const char *msg)
1539{
1540 write (STDERR_FILENO, msg, strlen (msg));
1541}
1542#endif
1543
384static void (*syserr_cb)(const char *msg); 1544static void (*syserr_cb)(const char *msg) EV_THROW;
385 1545
386void 1546void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 1547ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
388{ 1548{
389 syserr_cb = cb; 1549 syserr_cb = cb;
390} 1550}
391 1551
392static void noinline 1552static void noinline ecb_cold
393syserr (const char *msg) 1553ev_syserr (const char *msg)
394{ 1554{
395 if (!msg) 1555 if (!msg)
396 msg = "(libev) system error"; 1556 msg = "(libev) system error";
397 1557
398 if (syserr_cb) 1558 if (syserr_cb)
399 syserr_cb (msg); 1559 syserr_cb (msg);
400 else 1560 else
401 { 1561 {
1562#if EV_AVOID_STDIO
1563 ev_printerr (msg);
1564 ev_printerr (": ");
1565 ev_printerr (strerror (errno));
1566 ev_printerr ("\n");
1567#else
402 perror (msg); 1568 perror (msg);
1569#endif
403 abort (); 1570 abort ();
404 } 1571 }
405} 1572}
406 1573
407static void * 1574static void *
408ev_realloc_emul (void *ptr, long size) 1575ev_realloc_emul (void *ptr, long size) EV_THROW
409{ 1576{
410 /* some systems, notably openbsd and darwin, fail to properly 1577 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 1578 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 1579 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it,
1581 * despite documenting it otherwise.
413 */ 1582 */
414 1583
415 if (size) 1584 if (size)
416 return realloc (ptr, size); 1585 return realloc (ptr, size);
417 1586
418 free (ptr); 1587 free (ptr);
419 return 0; 1588 return 0;
420} 1589}
421 1590
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
423 1592
424void 1593void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1594ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
426{ 1595{
427 alloc = cb; 1596 alloc = cb;
428} 1597}
429 1598
430inline_speed void * 1599inline_speed void *
… …
432{ 1601{
433 ptr = alloc (ptr, size); 1602 ptr = alloc (ptr, size);
434 1603
435 if (!ptr && size) 1604 if (!ptr && size)
436 { 1605 {
1606#if EV_AVOID_STDIO
1607 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1608#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1609 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1610#endif
438 abort (); 1611 abort ();
439 } 1612 }
440 1613
441 return ptr; 1614 return ptr;
442} 1615}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1617#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1618#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1619
447/*****************************************************************************/ 1620/*****************************************************************************/
448 1621
1622/* set in reify when reification needed */
1623#define EV_ANFD_REIFY 1
1624
1625/* file descriptor info structure */
449typedef struct 1626typedef struct
450{ 1627{
451 WL head; 1628 WL head;
452 unsigned char events; 1629 unsigned char events; /* the events watched for */
1630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
453 unsigned char reify; 1632 unsigned char unused;
1633#if EV_USE_EPOLL
1634 unsigned int egen; /* generation counter to counter epoll bugs */
1635#endif
454#if EV_SELECT_IS_WINSOCKET 1636#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
455 SOCKET handle; 1637 SOCKET handle;
456#endif 1638#endif
1639#if EV_USE_IOCP
1640 OVERLAPPED or, ow;
1641#endif
457} ANFD; 1642} ANFD;
458 1643
1644/* stores the pending event set for a given watcher */
459typedef struct 1645typedef struct
460{ 1646{
461 W w; 1647 W w;
462 int events; 1648 int events; /* the pending event set for the given watcher */
463} ANPENDING; 1649} ANPENDING;
464 1650
465#if EV_USE_INOTIFY 1651#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 1652/* hash table entry per inotify-id */
467typedef struct 1653typedef struct
… …
470} ANFS; 1656} ANFS;
471#endif 1657#endif
472 1658
473/* Heap Entry */ 1659/* Heap Entry */
474#if EV_HEAP_CACHE_AT 1660#if EV_HEAP_CACHE_AT
1661 /* a heap element */
475 typedef struct { 1662 typedef struct {
476 ev_tstamp at; 1663 ev_tstamp at;
477 WT w; 1664 WT w;
478 } ANHE; 1665 } ANHE;
479 1666
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1667 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1668 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1669 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
483#else 1670#else
1671 /* a heap element */
484 typedef WT ANHE; 1672 typedef WT ANHE;
485 1673
486 #define ANHE_w(he) (he) 1674 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 1675 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 1676 #define ANHE_at_cache(he)
… …
499 #undef VAR 1687 #undef VAR
500 }; 1688 };
501 #include "ev_wrap.h" 1689 #include "ev_wrap.h"
502 1690
503 static struct ev_loop default_loop_struct; 1691 static struct ev_loop default_loop_struct;
504 struct ev_loop *ev_default_loop_ptr; 1692 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
505 1693
506#else 1694#else
507 1695
508 ev_tstamp ev_rt_now; 1696 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
509 #define VAR(name,decl) static decl; 1697 #define VAR(name,decl) static decl;
510 #include "ev_vars.h" 1698 #include "ev_vars.h"
511 #undef VAR 1699 #undef VAR
512 1700
513 static int ev_default_loop_ptr; 1701 static int ev_default_loop_ptr;
514 1702
515#endif 1703#endif
516 1704
1705#if EV_FEATURE_API
1706# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1707# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1708# define EV_INVOKE_PENDING invoke_cb (EV_A)
1709#else
1710# define EV_RELEASE_CB (void)0
1711# define EV_ACQUIRE_CB (void)0
1712# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1713#endif
1714
1715#define EVBREAK_RECURSE 0x80
1716
517/*****************************************************************************/ 1717/*****************************************************************************/
518 1718
1719#ifndef EV_HAVE_EV_TIME
519ev_tstamp 1720ev_tstamp
520ev_time (void) 1721ev_time (void) EV_THROW
521{ 1722{
522#if EV_USE_REALTIME 1723#if EV_USE_REALTIME
1724 if (expect_true (have_realtime))
1725 {
523 struct timespec ts; 1726 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 1727 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 1728 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 1729 }
1730#endif
1731
527 struct timeval tv; 1732 struct timeval tv;
528 gettimeofday (&tv, 0); 1733 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 1734 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 1735}
1736#endif
532 1737
533ev_tstamp inline_size 1738inline_size ev_tstamp
534get_clock (void) 1739get_clock (void)
535{ 1740{
536#if EV_USE_MONOTONIC 1741#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 1742 if (expect_true (have_monotonic))
538 { 1743 {
… …
545 return ev_time (); 1750 return ev_time ();
546} 1751}
547 1752
548#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
549ev_tstamp 1754ev_tstamp
550ev_now (EV_P) 1755ev_now (EV_P) EV_THROW
551{ 1756{
552 return ev_rt_now; 1757 return ev_rt_now;
553} 1758}
554#endif 1759#endif
555 1760
556void 1761void
557ev_sleep (ev_tstamp delay) 1762ev_sleep (ev_tstamp delay) EV_THROW
558{ 1763{
559 if (delay > 0.) 1764 if (delay > 0.)
560 { 1765 {
561#if EV_USE_NANOSLEEP 1766#if EV_USE_NANOSLEEP
562 struct timespec ts; 1767 struct timespec ts;
563 1768
564 ts.tv_sec = (time_t)delay; 1769 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 1770 nanosleep (&ts, 0);
568#elif defined(_WIN32) 1771#elif defined _WIN32
569 Sleep ((unsigned long)(delay * 1e3)); 1772 Sleep ((unsigned long)(delay * 1e3));
570#else 1773#else
571 struct timeval tv; 1774 struct timeval tv;
572 1775
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1777 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 1778 /* by older ones */
1779 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 1780 select (0, 0, 0, 0, &tv);
580#endif 1781#endif
581 } 1782 }
582} 1783}
583 1784
584/*****************************************************************************/ 1785/*****************************************************************************/
585 1786
586#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
587 1788
588int inline_size 1789/* find a suitable new size for the given array, */
1790/* hopefully by rounding to a nice-to-malloc size */
1791inline_size int
589array_nextsize (int elem, int cur, int cnt) 1792array_nextsize (int elem, int cur, int cnt)
590{ 1793{
591 int ncur = cur + 1; 1794 int ncur = cur + 1;
592 1795
593 do 1796 do
594 ncur <<= 1; 1797 ncur <<= 1;
595 while (cnt > ncur); 1798 while (cnt > ncur);
596 1799
597 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
598 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
599 { 1802 {
600 ncur *= elem; 1803 ncur *= elem;
601 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
602 ncur = ncur - sizeof (void *) * 4; 1805 ncur = ncur - sizeof (void *) * 4;
… …
604 } 1807 }
605 1808
606 return ncur; 1809 return ncur;
607} 1810}
608 1811
609static noinline void * 1812static void * noinline ecb_cold
610array_realloc (int elem, void *base, int *cur, int cnt) 1813array_realloc (int elem, void *base, int *cur, int cnt)
611{ 1814{
612 *cur = array_nextsize (elem, *cur, cnt); 1815 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 1816 return ev_realloc (base, elem * *cur);
614} 1817}
1818
1819#define array_init_zero(base,count) \
1820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 1821
616#define array_needsize(type,base,cur,cnt,init) \ 1822#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 1823 if (expect_false ((cnt) > (cur))) \
618 { \ 1824 { \
619 int ocur_ = (cur); \ 1825 int ecb_unused ocur_ = (cur); \
620 (base) = (type *)array_realloc \ 1826 (base) = (type *)array_realloc \
621 (sizeof (type), (base), &(cur), (cnt)); \ 1827 (sizeof (type), (base), &(cur), (cnt)); \
622 init ((base) + (ocur_), (cur) - ocur_); \ 1828 init ((base) + (ocur_), (cur) - ocur_); \
623 } 1829 }
624 1830
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1837 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 1838 }
633#endif 1839#endif
634 1840
635#define array_free(stem, idx) \ 1841#define array_free(stem, idx) \
636 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1842 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
637 1843
638/*****************************************************************************/ 1844/*****************************************************************************/
639 1845
1846/* dummy callback for pending events */
1847static void noinline
1848pendingcb (EV_P_ ev_prepare *w, int revents)
1849{
1850}
1851
640void noinline 1852void noinline
641ev_feed_event (EV_P_ void *w, int revents) 1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW
642{ 1854{
643 W w_ = (W)w; 1855 W w_ = (W)w;
644 int pri = ABSPRI (w_); 1856 int pri = ABSPRI (w_);
645 1857
646 if (expect_false (w_->pending)) 1858 if (expect_false (w_->pending))
… …
650 w_->pending = ++pendingcnt [pri]; 1862 w_->pending = ++pendingcnt [pri];
651 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
652 pendings [pri][w_->pending - 1].w = w_; 1864 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 1865 pendings [pri][w_->pending - 1].events = revents;
654 } 1866 }
655}
656 1867
657void inline_speed 1868 pendingpri = NUMPRI - 1;
1869}
1870
1871inline_speed void
1872feed_reverse (EV_P_ W w)
1873{
1874 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1875 rfeeds [rfeedcnt++] = w;
1876}
1877
1878inline_size void
1879feed_reverse_done (EV_P_ int revents)
1880{
1881 do
1882 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1883 while (rfeedcnt);
1884}
1885
1886inline_speed void
658queue_events (EV_P_ W *events, int eventcnt, int type) 1887queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 1888{
660 int i; 1889 int i;
661 1890
662 for (i = 0; i < eventcnt; ++i) 1891 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 1892 ev_feed_event (EV_A_ events [i], type);
664} 1893}
665 1894
666/*****************************************************************************/ 1895/*****************************************************************************/
667 1896
668void inline_size 1897inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 1898fd_event_nocheck (EV_P_ int fd, int revents)
683{ 1899{
684 ANFD *anfd = anfds + fd; 1900 ANFD *anfd = anfds + fd;
685 ev_io *w; 1901 ev_io *w;
686 1902
687 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1903 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
691 if (ev) 1907 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 1908 ev_feed_event (EV_A_ (W)w, ev);
693 } 1909 }
694} 1910}
695 1911
1912/* do not submit kernel events for fds that have reify set */
1913/* because that means they changed while we were polling for new events */
1914inline_speed void
1915fd_event (EV_P_ int fd, int revents)
1916{
1917 ANFD *anfd = anfds + fd;
1918
1919 if (expect_true (!anfd->reify))
1920 fd_event_nocheck (EV_A_ fd, revents);
1921}
1922
696void 1923void
697ev_feed_fd_event (EV_P_ int fd, int revents) 1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
698{ 1925{
699 if (fd >= 0 && fd < anfdmax) 1926 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 1927 fd_event_nocheck (EV_A_ fd, revents);
701} 1928}
702 1929
703void inline_size 1930/* make sure the external fd watch events are in-sync */
1931/* with the kernel/libev internal state */
1932inline_size void
704fd_reify (EV_P) 1933fd_reify (EV_P)
705{ 1934{
706 int i; 1935 int i;
1936
1937#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1938 for (i = 0; i < fdchangecnt; ++i)
1939 {
1940 int fd = fdchanges [i];
1941 ANFD *anfd = anfds + fd;
1942
1943 if (anfd->reify & EV__IOFDSET && anfd->head)
1944 {
1945 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1946
1947 if (handle != anfd->handle)
1948 {
1949 unsigned long arg;
1950
1951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1952
1953 /* handle changed, but fd didn't - we need to do it in two steps */
1954 backend_modify (EV_A_ fd, anfd->events, 0);
1955 anfd->events = 0;
1956 anfd->handle = handle;
1957 }
1958 }
1959 }
1960#endif
707 1961
708 for (i = 0; i < fdchangecnt; ++i) 1962 for (i = 0; i < fdchangecnt; ++i)
709 { 1963 {
710 int fd = fdchanges [i]; 1964 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 1965 ANFD *anfd = anfds + fd;
712 ev_io *w; 1966 ev_io *w;
713 1967
714 unsigned char events = 0; 1968 unsigned char o_events = anfd->events;
1969 unsigned char o_reify = anfd->reify;
715 1970
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1971 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 1972
719#if EV_SELECT_IS_WINSOCKET 1973 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
720 if (events)
721 { 1974 {
722 unsigned long arg; 1975 anfd->events = 0;
723 #ifdef EV_FD_TO_WIN32_HANDLE 1976
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1977 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
725 #else 1978 anfd->events |= (unsigned char)w->events;
726 anfd->handle = _get_osfhandle (fd); 1979
727 #endif 1980 if (o_events != anfd->events)
728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1981 o_reify = EV__IOFDSET; /* actually |= */
729 } 1982 }
730#endif
731 1983
732 { 1984 if (o_reify & EV__IOFDSET)
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events;
738
739 if (o_events != events || o_reify & EV_IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events); 1985 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 1986 }
743 1987
744 fdchangecnt = 0; 1988 fdchangecnt = 0;
745} 1989}
746 1990
747void inline_size 1991/* something about the given fd changed */
1992inline_size void
748fd_change (EV_P_ int fd, int flags) 1993fd_change (EV_P_ int fd, int flags)
749{ 1994{
750 unsigned char reify = anfds [fd].reify; 1995 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 1996 anfds [fd].reify |= flags;
752 1997
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2001 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 2002 fdchanges [fdchangecnt - 1] = fd;
758 } 2003 }
759} 2004}
760 2005
761void inline_speed 2006/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
2007inline_speed void ecb_cold
762fd_kill (EV_P_ int fd) 2008fd_kill (EV_P_ int fd)
763{ 2009{
764 ev_io *w; 2010 ev_io *w;
765 2011
766 while ((w = (ev_io *)anfds [fd].head)) 2012 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 2014 ev_io_stop (EV_A_ w);
769 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2015 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
770 } 2016 }
771} 2017}
772 2018
773int inline_size 2019/* check whether the given fd is actually valid, for error recovery */
2020inline_size int ecb_cold
774fd_valid (int fd) 2021fd_valid (int fd)
775{ 2022{
776#ifdef _WIN32 2023#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 2025#else
779 return fcntl (fd, F_GETFD) != -1; 2026 return fcntl (fd, F_GETFD) != -1;
780#endif 2027#endif
781} 2028}
782 2029
783/* called on EBADF to verify fds */ 2030/* called on EBADF to verify fds */
784static void noinline 2031static void noinline ecb_cold
785fd_ebadf (EV_P) 2032fd_ebadf (EV_P)
786{ 2033{
787 int fd; 2034 int fd;
788 2035
789 for (fd = 0; fd < anfdmax; ++fd) 2036 for (fd = 0; fd < anfdmax; ++fd)
… …
791 if (!fd_valid (fd) && errno == EBADF) 2038 if (!fd_valid (fd) && errno == EBADF)
792 fd_kill (EV_A_ fd); 2039 fd_kill (EV_A_ fd);
793} 2040}
794 2041
795/* called on ENOMEM in select/poll to kill some fds and retry */ 2042/* called on ENOMEM in select/poll to kill some fds and retry */
796static void noinline 2043static void noinline ecb_cold
797fd_enomem (EV_P) 2044fd_enomem (EV_P)
798{ 2045{
799 int fd; 2046 int fd;
800 2047
801 for (fd = anfdmax; fd--; ) 2048 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 2049 if (anfds [fd].events)
803 { 2050 {
804 fd_kill (EV_A_ fd); 2051 fd_kill (EV_A_ fd);
805 return; 2052 break;
806 } 2053 }
807} 2054}
808 2055
809/* usually called after fork if backend needs to re-arm all fds from scratch */ 2056/* usually called after fork if backend needs to re-arm all fds from scratch */
810static void noinline 2057static void noinline
… …
814 2061
815 for (fd = 0; fd < anfdmax; ++fd) 2062 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 2063 if (anfds [fd].events)
817 { 2064 {
818 anfds [fd].events = 0; 2065 anfds [fd].events = 0;
2066 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 2067 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 2068 }
821} 2069}
822 2070
2071/* used to prepare libev internal fd's */
2072/* this is not fork-safe */
2073inline_speed void
2074fd_intern (int fd)
2075{
2076#ifdef _WIN32
2077 unsigned long arg = 1;
2078 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2079#else
2080 fcntl (fd, F_SETFD, FD_CLOEXEC);
2081 fcntl (fd, F_SETFL, O_NONBLOCK);
2082#endif
2083}
2084
823/*****************************************************************************/ 2085/*****************************************************************************/
824 2086
825/* 2087/*
826 * the heap functions want a real array index. array index 0 uis guaranteed to not 2088 * the heap functions want a real array index. array index 0 is guaranteed to not
827 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2089 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
828 * the branching factor of the d-tree. 2090 * the branching factor of the d-tree.
829 */ 2091 */
830 2092
831/* 2093/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 2102#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 2103#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 2104#define UPHEAP_DONE(p,k) ((p) == (k))
843 2105
844/* away from the root */ 2106/* away from the root */
845void inline_speed 2107inline_speed void
846downheap (ANHE *heap, int N, int k) 2108downheap (ANHE *heap, int N, int k)
847{ 2109{
848 ANHE he = heap [k]; 2110 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 2111 ANHE *E = heap + N + HEAP0;
850 2112
… …
890#define HEAP0 1 2152#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 2153#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 2154#define UPHEAP_DONE(p,k) (!(p))
893 2155
894/* away from the root */ 2156/* away from the root */
895void inline_speed 2157inline_speed void
896downheap (ANHE *heap, int N, int k) 2158downheap (ANHE *heap, int N, int k)
897{ 2159{
898 ANHE he = heap [k]; 2160 ANHE he = heap [k];
899 2161
900 for (;;) 2162 for (;;)
901 { 2163 {
902 int c = k << 1; 2164 int c = k << 1;
903 2165
904 if (c > N + HEAP0 - 1) 2166 if (c >= N + HEAP0)
905 break; 2167 break;
906 2168
907 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2169 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0; 2170 ? 1 : 0;
909 2171
… …
920 ev_active (ANHE_w (he)) = k; 2182 ev_active (ANHE_w (he)) = k;
921} 2183}
922#endif 2184#endif
923 2185
924/* towards the root */ 2186/* towards the root */
925void inline_speed 2187inline_speed void
926upheap (ANHE *heap, int k) 2188upheap (ANHE *heap, int k)
927{ 2189{
928 ANHE he = heap [k]; 2190 ANHE he = heap [k];
929 2191
930 for (;;) 2192 for (;;)
… …
941 2203
942 heap [k] = he; 2204 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 2205 ev_active (ANHE_w (he)) = k;
944} 2206}
945 2207
946void inline_size 2208/* move an element suitably so it is in a correct place */
2209inline_size void
947adjustheap (ANHE *heap, int N, int k) 2210adjustheap (ANHE *heap, int N, int k)
948{ 2211{
949 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2212 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
950 upheap (heap, k); 2213 upheap (heap, k);
951 else 2214 else
952 downheap (heap, N, k); 2215 downheap (heap, N, k);
953} 2216}
954 2217
955/* rebuild the heap: this function is used only once and executed rarely */ 2218/* rebuild the heap: this function is used only once and executed rarely */
956void inline_size 2219inline_size void
957reheap (ANHE *heap, int N) 2220reheap (ANHE *heap, int N)
958{ 2221{
959 int i; 2222 int i;
960 2223
961 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 2224 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
964 upheap (heap, i + HEAP0); 2227 upheap (heap, i + HEAP0);
965} 2228}
966 2229
967/*****************************************************************************/ 2230/*****************************************************************************/
968 2231
2232/* associate signal watchers to a signal signal */
969typedef struct 2233typedef struct
970{ 2234{
2235 EV_ATOMIC_T pending;
2236#if EV_MULTIPLICITY
2237 EV_P;
2238#endif
971 WL head; 2239 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 2240} ANSIG;
974 2241
975static ANSIG *signals; 2242static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 2243
992/*****************************************************************************/ 2244/*****************************************************************************/
993 2245
994void inline_speed 2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 2247
1006static void noinline 2248static void noinline ecb_cold
1007evpipe_init (EV_P) 2249evpipe_init (EV_P)
1008{ 2250{
1009 if (!ev_is_active (&pipeev)) 2251 if (!ev_is_active (&pipe_w))
2252 {
2253 int fds [2];
2254
2255# if EV_USE_EVENTFD
2256 fds [0] = -1;
2257 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2258 if (fds [1] < 0 && errno == EINVAL)
2259 fds [1] = eventfd (0, 0);
2260
2261 if (fds [1] < 0)
2262# endif
2263 {
2264 while (pipe (fds))
2265 ev_syserr ("(libev) error creating signal/async pipe");
2266
2267 fd_intern (fds [0]);
2268 }
2269
2270 evpipe [0] = fds [0];
2271
2272 if (evpipe [1] < 0)
2273 evpipe [1] = fds [1]; /* first call, set write fd */
2274 else
2275 {
2276 /* on subsequent calls, do not change evpipe [1] */
2277 /* so that evpipe_write can always rely on its value. */
2278 /* this branch does not do anything sensible on windows, */
2279 /* so must not be executed on windows */
2280
2281 dup2 (fds [1], evpipe [1]);
2282 close (fds [1]);
2283 }
2284
2285 fd_intern (evpipe [1]);
2286
2287 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2288 ev_io_start (EV_A_ &pipe_w);
2289 ev_unref (EV_A); /* watcher should not keep loop alive */
1010 { 2290 }
2291}
2292
2293inline_speed void
2294evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2295{
2296 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2297
2298 if (expect_true (*flag))
2299 return;
2300
2301 *flag = 1;
2302 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2303
2304 pipe_write_skipped = 1;
2305
2306 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2307
2308 if (pipe_write_wanted)
2309 {
2310 int old_errno;
2311
2312 pipe_write_skipped = 0;
2313 ECB_MEMORY_FENCE_RELEASE;
2314
2315 old_errno = errno; /* save errno because write will clobber it */
2316
1011#if EV_USE_EVENTFD 2317#if EV_USE_EVENTFD
1012 if ((evfd = eventfd (0, 0)) >= 0) 2318 if (evpipe [0] < 0)
1013 { 2319 {
1014 evpipe [0] = -1; 2320 uint64_t counter = 1;
1015 fd_intern (evfd); 2321 write (evpipe [1], &counter, sizeof (uint64_t));
1016 ev_io_set (&pipeev, evfd, EV_READ);
1017 } 2322 }
1018 else 2323 else
1019#endif 2324#endif
1020 { 2325 {
1021 while (pipe (evpipe)) 2326#ifdef _WIN32
1022 syserr ("(libev) error creating signal/async pipe"); 2327 WSABUF buf;
1023 2328 DWORD sent;
1024 fd_intern (evpipe [0]); 2329 buf.buf = &buf;
1025 fd_intern (evpipe [1]); 2330 buf.len = 1;
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 2331 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2332#else
2333 write (evpipe [1], &(evpipe [1]), 1);
2334#endif
1027 } 2335 }
1028 2336
1029 ev_io_start (EV_A_ &pipeev); 2337 errno = old_errno;
1030 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 }
1032}
1033
1034void inline_size
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{
1037 if (!*flag)
1038 { 2338 }
1039 int old_errno = errno; /* save errno because write might clobber it */ 2339}
1040 2340
1041 *flag = 1; 2341/* called whenever the libev signal pipe */
2342/* got some events (signal, async) */
2343static void
2344pipecb (EV_P_ ev_io *iow, int revents)
2345{
2346 int i;
1042 2347
2348 if (revents & EV_READ)
2349 {
1043#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1044 if (evfd >= 0) 2351 if (evpipe [0] < 0)
1045 { 2352 {
1046 uint64_t counter = 1; 2353 uint64_t counter;
1047 write (evfd, &counter, sizeof (uint64_t)); 2354 read (evpipe [1], &counter, sizeof (uint64_t));
1048 } 2355 }
1049 else 2356 else
1050#endif 2357#endif
1051 write (evpipe [1], &old_errno, 1); 2358 {
1052
1053 errno = old_errno;
1054 }
1055}
1056
1057static void
1058pipecb (EV_P_ ev_io *iow, int revents)
1059{
1060#if EV_USE_EVENTFD
1061 if (evfd >= 0)
1062 {
1063 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t));
1065 }
1066 else
1067#endif
1068 {
1069 char dummy; 2359 char dummy[4];
2360#ifdef _WIN32
2361 WSABUF buf;
2362 DWORD recvd;
2363 DWORD flags = 0;
2364 buf.buf = dummy;
2365 buf.len = sizeof (dummy);
2366 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2367#else
1070 read (evpipe [0], &dummy, 1); 2368 read (evpipe [0], &dummy, sizeof (dummy));
2369#endif
2370 }
2371 }
2372
2373 pipe_write_skipped = 0;
2374
2375 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2376
2377#if EV_SIGNAL_ENABLE
2378 if (sig_pending)
1071 } 2379 {
2380 sig_pending = 0;
1072 2381
1073 if (gotsig && ev_is_default_loop (EV_A)) 2382 ECB_MEMORY_FENCE;
1074 {
1075 int signum;
1076 gotsig = 0;
1077 2383
1078 for (signum = signalmax; signum--; ) 2384 for (i = EV_NSIG - 1; i--; )
1079 if (signals [signum].gotsig) 2385 if (expect_false (signals [i].pending))
1080 ev_feed_signal_event (EV_A_ signum + 1); 2386 ev_feed_signal_event (EV_A_ i + 1);
1081 } 2387 }
2388#endif
1082 2389
1083#if EV_ASYNC_ENABLE 2390#if EV_ASYNC_ENABLE
1084 if (gotasync) 2391 if (async_pending)
1085 { 2392 {
1086 int i; 2393 async_pending = 0;
1087 gotasync = 0; 2394
2395 ECB_MEMORY_FENCE;
1088 2396
1089 for (i = asynccnt; i--; ) 2397 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 2398 if (asyncs [i]->sent)
1091 { 2399 {
1092 asyncs [i]->sent = 0; 2400 asyncs [i]->sent = 0;
2401 ECB_MEMORY_FENCE_RELEASE;
1093 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2402 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1094 } 2403 }
1095 } 2404 }
1096#endif 2405#endif
1097} 2406}
1098 2407
1099/*****************************************************************************/ 2408/*****************************************************************************/
1100 2409
2410void
2411ev_feed_signal (int signum) EV_THROW
2412{
2413#if EV_MULTIPLICITY
2414 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE;
2416 EV_A = signals [signum - 1].loop;
2417
2418 if (!EV_A)
2419 return;
2420#endif
2421
2422 signals [signum - 1].pending = 1;
2423 evpipe_write (EV_A_ &sig_pending);
2424}
2425
1101static void 2426static void
1102ev_sighandler (int signum) 2427ev_sighandler (int signum)
1103{ 2428{
2429#ifdef _WIN32
2430 signal (signum, ev_sighandler);
2431#endif
2432
2433 ev_feed_signal (signum);
2434}
2435
2436void noinline
2437ev_feed_signal_event (EV_P_ int signum) EV_THROW
2438{
2439 WL w;
2440
2441 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2442 return;
2443
2444 --signum;
2445
1104#if EV_MULTIPLICITY 2446#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct; 2447 /* it is permissible to try to feed a signal to the wrong loop */
1106#endif 2448 /* or, likely more useful, feeding a signal nobody is waiting for */
1107 2449
1108#if _WIN32 2450 if (expect_false (signals [signum].loop != EV_A))
1109 signal (signum, ev_sighandler);
1110#endif
1111
1112 signals [signum - 1].gotsig = 1;
1113 evpipe_write (EV_A_ &gotsig);
1114}
1115
1116void noinline
1117ev_feed_signal_event (EV_P_ int signum)
1118{
1119 WL w;
1120
1121#if EV_MULTIPLICITY
1122 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1123#endif
1124
1125 --signum;
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 2451 return;
2452#endif
1129 2453
1130 signals [signum].gotsig = 0; 2454 signals [signum].pending = 0;
2455 ECB_MEMORY_FENCE_RELEASE;
1131 2456
1132 for (w = signals [signum].head; w; w = w->next) 2457 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2458 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 2459}
1135 2460
2461#if EV_USE_SIGNALFD
2462static void
2463sigfdcb (EV_P_ ev_io *iow, int revents)
2464{
2465 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2466
2467 for (;;)
2468 {
2469 ssize_t res = read (sigfd, si, sizeof (si));
2470
2471 /* not ISO-C, as res might be -1, but works with SuS */
2472 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2473 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2474
2475 if (res < (ssize_t)sizeof (si))
2476 break;
2477 }
2478}
2479#endif
2480
2481#endif
2482
1136/*****************************************************************************/ 2483/*****************************************************************************/
1137 2484
2485#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 2486static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 2487
1142static ev_signal childev; 2488static ev_signal childev;
1143 2489
1144#ifndef WIFCONTINUED 2490#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 2491# define WIFCONTINUED(status) 0
1146#endif 2492#endif
1147 2493
1148void inline_speed 2494/* handle a single child status event */
2495inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 2496child_reap (EV_P_ int chain, int pid, int status)
1150{ 2497{
1151 ev_child *w; 2498 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2499 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 2500
1154 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2501 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1155 { 2502 {
1156 if ((w->pid == pid || !w->pid) 2503 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 2504 && (!traced || (w->flags & 1)))
1158 { 2505 {
1159 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2506 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1166 2513
1167#ifndef WCONTINUED 2514#ifndef WCONTINUED
1168# define WCONTINUED 0 2515# define WCONTINUED 0
1169#endif 2516#endif
1170 2517
2518/* called on sigchld etc., calls waitpid */
1171static void 2519static void
1172childcb (EV_P_ ev_signal *sw, int revents) 2520childcb (EV_P_ ev_signal *sw, int revents)
1173{ 2521{
1174 int pid, status; 2522 int pid, status;
1175 2523
… …
1183 /* make sure we are called again until all children have been reaped */ 2531 /* make sure we are called again until all children have been reaped */
1184 /* we need to do it this way so that the callback gets called before we continue */ 2532 /* we need to do it this way so that the callback gets called before we continue */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2533 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 2534
1187 child_reap (EV_A_ pid, pid, status); 2535 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 2536 if ((EV_PID_HASHSIZE) > 1)
1189 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2537 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1190} 2538}
1191 2539
1192#endif 2540#endif
1193 2541
1194/*****************************************************************************/ 2542/*****************************************************************************/
1195 2543
2544#if EV_USE_IOCP
2545# include "ev_iocp.c"
2546#endif
1196#if EV_USE_PORT 2547#if EV_USE_PORT
1197# include "ev_port.c" 2548# include "ev_port.c"
1198#endif 2549#endif
1199#if EV_USE_KQUEUE 2550#if EV_USE_KQUEUE
1200# include "ev_kqueue.c" 2551# include "ev_kqueue.c"
… …
1207#endif 2558#endif
1208#if EV_USE_SELECT 2559#if EV_USE_SELECT
1209# include "ev_select.c" 2560# include "ev_select.c"
1210#endif 2561#endif
1211 2562
1212int 2563int ecb_cold
1213ev_version_major (void) 2564ev_version_major (void) EV_THROW
1214{ 2565{
1215 return EV_VERSION_MAJOR; 2566 return EV_VERSION_MAJOR;
1216} 2567}
1217 2568
1218int 2569int ecb_cold
1219ev_version_minor (void) 2570ev_version_minor (void) EV_THROW
1220{ 2571{
1221 return EV_VERSION_MINOR; 2572 return EV_VERSION_MINOR;
1222} 2573}
1223 2574
1224/* return true if we are running with elevated privileges and should ignore env variables */ 2575/* return true if we are running with elevated privileges and should ignore env variables */
1225int inline_size 2576int inline_size ecb_cold
1226enable_secure (void) 2577enable_secure (void)
1227{ 2578{
1228#ifdef _WIN32 2579#ifdef _WIN32
1229 return 0; 2580 return 0;
1230#else 2581#else
1231 return getuid () != geteuid () 2582 return getuid () != geteuid ()
1232 || getgid () != getegid (); 2583 || getgid () != getegid ();
1233#endif 2584#endif
1234} 2585}
1235 2586
1236unsigned int 2587unsigned int ecb_cold
1237ev_supported_backends (void) 2588ev_supported_backends (void) EV_THROW
1238{ 2589{
1239 unsigned int flags = 0; 2590 unsigned int flags = 0;
1240 2591
1241 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1242 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1245 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1246 2597
1247 return flags; 2598 return flags;
1248} 2599}
1249 2600
1250unsigned int 2601unsigned int ecb_cold
1251ev_recommended_backends (void) 2602ev_recommended_backends (void) EV_THROW
1252{ 2603{
1253 unsigned int flags = ev_supported_backends (); 2604 unsigned int flags = ev_supported_backends ();
1254 2605
1255#ifndef __NetBSD__ 2606#ifndef __NetBSD__
1256 /* kqueue is borked on everything but netbsd apparently */ 2607 /* kqueue is borked on everything but netbsd apparently */
1257 /* it usually doesn't work correctly on anything but sockets and pipes */ 2608 /* it usually doesn't work correctly on anything but sockets and pipes */
1258 flags &= ~EVBACKEND_KQUEUE; 2609 flags &= ~EVBACKEND_KQUEUE;
1259#endif 2610#endif
1260#ifdef __APPLE__ 2611#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 2612 /* only select works correctly on that "unix-certified" platform */
1262 flags &= ~EVBACKEND_POLL; 2613 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2614 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2615#endif
2616#ifdef __FreeBSD__
2617 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1263#endif 2618#endif
1264 2619
1265 return flags; 2620 return flags;
1266} 2621}
1267 2622
2623unsigned int ecb_cold
2624ev_embeddable_backends (void) EV_THROW
2625{
2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2627
2628 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2629 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2630 flags &= ~EVBACKEND_EPOLL;
2631
2632 return flags;
2633}
2634
1268unsigned int 2635unsigned int
1269ev_embeddable_backends (void) 2636ev_backend (EV_P) EV_THROW
1270{ 2637{
1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2638 return backend;
1272
1273 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1274 /* please fix it and tell me how to detect the fix */
1275 flags &= ~EVBACKEND_EPOLL;
1276
1277 return flags;
1278} 2639}
1279 2640
2641#if EV_FEATURE_API
1280unsigned int 2642unsigned int
1281ev_backend (EV_P) 2643ev_iteration (EV_P) EV_THROW
1282{ 2644{
1283 return backend; 2645 return loop_count;
1284} 2646}
1285 2647
1286unsigned int 2648unsigned int
1287ev_loop_count (EV_P) 2649ev_depth (EV_P) EV_THROW
1288{ 2650{
1289 return loop_count; 2651 return loop_depth;
1290} 2652}
1291 2653
1292void 2654void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1294{ 2656{
1295 io_blocktime = interval; 2657 io_blocktime = interval;
1296} 2658}
1297 2659
1298void 2660void
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1300{ 2662{
1301 timeout_blocktime = interval; 2663 timeout_blocktime = interval;
1302} 2664}
1303 2665
2666void
2667ev_set_userdata (EV_P_ void *data) EV_THROW
2668{
2669 userdata = data;
2670}
2671
2672void *
2673ev_userdata (EV_P) EV_THROW
2674{
2675 return userdata;
2676}
2677
2678void
2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2680{
2681 invoke_cb = invoke_pending_cb;
2682}
2683
2684void
2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2686{
2687 release_cb = release;
2688 acquire_cb = acquire;
2689}
2690#endif
2691
2692/* initialise a loop structure, must be zero-initialised */
1304static void noinline 2693static void noinline ecb_cold
1305loop_init (EV_P_ unsigned int flags) 2694loop_init (EV_P_ unsigned int flags) EV_THROW
1306{ 2695{
1307 if (!backend) 2696 if (!backend)
1308 { 2697 {
2698 origflags = flags;
2699
2700#if EV_USE_REALTIME
2701 if (!have_realtime)
2702 {
2703 struct timespec ts;
2704
2705 if (!clock_gettime (CLOCK_REALTIME, &ts))
2706 have_realtime = 1;
2707 }
2708#endif
2709
1309#if EV_USE_MONOTONIC 2710#if EV_USE_MONOTONIC
2711 if (!have_monotonic)
1310 { 2712 {
1311 struct timespec ts; 2713 struct timespec ts;
2714
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2715 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 2716 have_monotonic = 1;
1314 } 2717 }
1315#endif
1316
1317 ev_rt_now = ev_time ();
1318 mn_now = get_clock ();
1319 now_floor = mn_now;
1320 rtmn_diff = ev_rt_now - mn_now;
1321
1322 io_blocktime = 0.;
1323 timeout_blocktime = 0.;
1324 backend = 0;
1325 backend_fd = -1;
1326 gotasync = 0;
1327#if EV_USE_INOTIFY
1328 fs_fd = -2;
1329#endif 2718#endif
1330 2719
1331 /* pid check not overridable via env */ 2720 /* pid check not overridable via env */
1332#ifndef _WIN32 2721#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK) 2722 if (flags & EVFLAG_FORKCHECK)
… …
1337 if (!(flags & EVFLAG_NOENV) 2726 if (!(flags & EVFLAG_NOENV)
1338 && !enable_secure () 2727 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS")) 2728 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS")); 2729 flags = atoi (getenv ("LIBEV_FLAGS"));
1341 2730
1342 if (!(flags & 0x0000ffffU)) 2731 ev_rt_now = ev_time ();
2732 mn_now = get_clock ();
2733 now_floor = mn_now;
2734 rtmn_diff = ev_rt_now - mn_now;
2735#if EV_FEATURE_API
2736 invoke_cb = ev_invoke_pending;
2737#endif
2738
2739 io_blocktime = 0.;
2740 timeout_blocktime = 0.;
2741 backend = 0;
2742 backend_fd = -1;
2743 sig_pending = 0;
2744#if EV_ASYNC_ENABLE
2745 async_pending = 0;
2746#endif
2747 pipe_write_skipped = 0;
2748 pipe_write_wanted = 0;
2749 evpipe [0] = -1;
2750 evpipe [1] = -1;
2751#if EV_USE_INOTIFY
2752 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2753#endif
2754#if EV_USE_SIGNALFD
2755 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2756#endif
2757
2758 if (!(flags & EVBACKEND_MASK))
1343 flags |= ev_recommended_backends (); 2759 flags |= ev_recommended_backends ();
1344 2760
2761#if EV_USE_IOCP
2762 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2763#endif
1345#if EV_USE_PORT 2764#if EV_USE_PORT
1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2765 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1347#endif 2766#endif
1348#if EV_USE_KQUEUE 2767#if EV_USE_KQUEUE
1349 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2768 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1356#endif 2775#endif
1357#if EV_USE_SELECT 2776#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2777 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 2778#endif
1360 2779
2780 ev_prepare_init (&pending_w, pendingcb);
2781
2782#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 2783 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 2784 ev_set_priority (&pipe_w, EV_MAXPRI);
2785#endif
1363 } 2786 }
1364} 2787}
1365 2788
1366static void noinline 2789/* free up a loop structure */
2790void ecb_cold
1367loop_destroy (EV_P) 2791ev_loop_destroy (EV_P)
1368{ 2792{
1369 int i; 2793 int i;
1370 2794
2795#if EV_MULTIPLICITY
2796 /* mimic free (0) */
2797 if (!EV_A)
2798 return;
2799#endif
2800
2801#if EV_CLEANUP_ENABLE
2802 /* queue cleanup watchers (and execute them) */
2803 if (expect_false (cleanupcnt))
2804 {
2805 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2806 EV_INVOKE_PENDING;
2807 }
2808#endif
2809
2810#if EV_CHILD_ENABLE
2811 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2812 {
2813 ev_ref (EV_A); /* child watcher */
2814 ev_signal_stop (EV_A_ &childev);
2815 }
2816#endif
2817
1371 if (ev_is_active (&pipeev)) 2818 if (ev_is_active (&pipe_w))
1372 { 2819 {
1373 ev_ref (EV_A); /* signal watcher */ 2820 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 2821 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 2822
2823 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2824 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2825 }
2826
1376#if EV_USE_EVENTFD 2827#if EV_USE_SIGNALFD
1377 if (evfd >= 0) 2828 if (ev_is_active (&sigfd_w))
1378 close (evfd); 2829 close (sigfd);
1379#endif 2830#endif
1380
1381 if (evpipe [0] >= 0)
1382 {
1383 close (evpipe [0]);
1384 close (evpipe [1]);
1385 }
1386 }
1387 2831
1388#if EV_USE_INOTIFY 2832#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 2833 if (fs_fd >= 0)
1390 close (fs_fd); 2834 close (fs_fd);
1391#endif 2835#endif
1392 2836
1393 if (backend_fd >= 0) 2837 if (backend_fd >= 0)
1394 close (backend_fd); 2838 close (backend_fd);
1395 2839
2840#if EV_USE_IOCP
2841 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2842#endif
1396#if EV_USE_PORT 2843#if EV_USE_PORT
1397 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2844 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1398#endif 2845#endif
1399#if EV_USE_KQUEUE 2846#if EV_USE_KQUEUE
1400 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2847 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1415#if EV_IDLE_ENABLE 2862#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 2863 array_free (idle, [i]);
1417#endif 2864#endif
1418 } 2865 }
1419 2866
1420 ev_free (anfds); anfdmax = 0; 2867 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 2868
1422 /* have to use the microsoft-never-gets-it-right macro */ 2869 /* have to use the microsoft-never-gets-it-right macro */
2870 array_free (rfeed, EMPTY);
1423 array_free (fdchange, EMPTY); 2871 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 2872 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 2873#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 2874 array_free (periodic, EMPTY);
1427#endif 2875#endif
1428#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY); 2877 array_free (fork, EMPTY);
1430#endif 2878#endif
2879#if EV_CLEANUP_ENABLE
2880 array_free (cleanup, EMPTY);
2881#endif
1431 array_free (prepare, EMPTY); 2882 array_free (prepare, EMPTY);
1432 array_free (check, EMPTY); 2883 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE 2884#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY); 2885 array_free (async, EMPTY);
1435#endif 2886#endif
1436 2887
1437 backend = 0; 2888 backend = 0;
2889
2890#if EV_MULTIPLICITY
2891 if (ev_is_default_loop (EV_A))
2892#endif
2893 ev_default_loop_ptr = 0;
2894#if EV_MULTIPLICITY
2895 else
2896 ev_free (EV_A);
2897#endif
1438} 2898}
1439 2899
1440#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 2901inline_size void infy_fork (EV_P);
1442#endif 2902#endif
1443 2903
1444void inline_size 2904inline_size void
1445loop_fork (EV_P) 2905loop_fork (EV_P)
1446{ 2906{
1447#if EV_USE_PORT 2907#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2908 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 2909#endif
… …
1455#endif 2915#endif
1456#if EV_USE_INOTIFY 2916#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 2917 infy_fork (EV_A);
1458#endif 2918#endif
1459 2919
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1460 if (ev_is_active (&pipeev)) 2921 if (ev_is_active (&pipe_w))
1461 { 2922 {
1462 /* this "locks" the handlers against writing to the pipe */ 2923 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1463 /* while we modify the fd vars */
1464 gotsig = 1;
1465#if EV_ASYNC_ENABLE
1466 gotasync = 1;
1467#endif
1468 2924
1469 ev_ref (EV_A); 2925 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 2926 ev_io_stop (EV_A_ &pipe_w);
1471
1472#if EV_USE_EVENTFD
1473 if (evfd >= 0)
1474 close (evfd);
1475#endif
1476 2927
1477 if (evpipe [0] >= 0) 2928 if (evpipe [0] >= 0)
1478 { 2929 EV_WIN32_CLOSE_FD (evpipe [0]);
1479 close (evpipe [0]);
1480 close (evpipe [1]);
1481 }
1482 2930
1483 evpipe_init (EV_A); 2931 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 2932 /* iterate over everything, in case we missed something before */
1485 pipecb (EV_A_ &pipeev, EV_READ); 2933 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1486 } 2934 }
2935#endif
1487 2936
1488 postfork = 0; 2937 postfork = 0;
1489} 2938}
1490 2939
1491#if EV_MULTIPLICITY 2940#if EV_MULTIPLICITY
1492 2941
1493struct ev_loop * 2942struct ev_loop * ecb_cold
1494ev_loop_new (unsigned int flags) 2943ev_loop_new (unsigned int flags) EV_THROW
1495{ 2944{
1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1497 2946
1498 memset (loop, 0, sizeof (struct ev_loop)); 2947 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 2948 loop_init (EV_A_ flags);
1501 2949
1502 if (ev_backend (EV_A)) 2950 if (ev_backend (EV_A))
1503 return loop; 2951 return EV_A;
1504 2952
2953 ev_free (EV_A);
1505 return 0; 2954 return 0;
1506} 2955}
1507 2956
1508void 2957#endif /* multiplicity */
1509ev_loop_destroy (EV_P)
1510{
1511 loop_destroy (EV_A);
1512 ev_free (loop);
1513}
1514
1515void
1516ev_loop_fork (EV_P)
1517{
1518 postfork = 1; /* must be in line with ev_default_fork */
1519}
1520 2958
1521#if EV_VERIFY 2959#if EV_VERIFY
1522static void noinline 2960static void noinline ecb_cold
1523verify_watcher (EV_P_ W w) 2961verify_watcher (EV_P_ W w)
1524{ 2962{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 2964
1527 if (w->pending) 2965 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529} 2967}
1530 2968
1531static void noinline 2969static void noinline ecb_cold
1532verify_heap (EV_P_ ANHE *heap, int N) 2970verify_heap (EV_P_ ANHE *heap, int N)
1533{ 2971{
1534 int i; 2972 int i;
1535 2973
1536 for (i = HEAP0; i < N + HEAP0; ++i) 2974 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 2975 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2976 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2977 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2978 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541 2979
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 2981 }
1544} 2982}
1545 2983
1546static void noinline 2984static void noinline ecb_cold
1547array_verify (EV_P_ W *ws, int cnt) 2985array_verify (EV_P_ W *ws, int cnt)
1548{ 2986{
1549 while (cnt--) 2987 while (cnt--)
1550 { 2988 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 2990 verify_watcher (EV_A_ ws [cnt]);
1553 } 2991 }
1554} 2992}
1555#endif 2993#endif
1556 2994
1557void 2995#if EV_FEATURE_API
1558ev_loop_verify (EV_P) 2996void ecb_cold
2997ev_verify (EV_P) EV_THROW
1559{ 2998{
1560#if EV_VERIFY 2999#if EV_VERIFY
1561 int i; 3000 int i;
1562 WL w; 3001 WL w, w2;
1563 3002
1564 assert (activecnt >= -1); 3003 assert (activecnt >= -1);
1565 3004
1566 assert (fdchangemax >= fdchangecnt); 3005 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 3006 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 3007 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 3008
1570 assert (anfdmax >= 0); 3009 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 3010 for (i = 0; i < anfdmax; ++i)
3011 {
3012 int j = 0;
3013
1572 for (w = anfds [i].head; w; w = w->next) 3014 for (w = w2 = anfds [i].head; w; w = w->next)
1573 { 3015 {
1574 verify_watcher (EV_A_ (W)w); 3016 verify_watcher (EV_A_ (W)w);
3017
3018 if (j++ & 1)
3019 {
3020 assert (("libev: io watcher list contains a loop", w != w2));
3021 w2 = w2->next;
3022 }
3023
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 3024 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3025 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 } 3026 }
3027 }
1578 3028
1579 assert (timermax >= timercnt); 3029 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 3030 verify_heap (EV_A_ timers, timercnt);
1581 3031
1582#if EV_PERIODIC_ENABLE 3032#if EV_PERIODIC_ENABLE
… …
1597#if EV_FORK_ENABLE 3047#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt); 3048 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt); 3049 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif 3050#endif
1601 3051
3052#if EV_CLEANUP_ENABLE
3053 assert (cleanupmax >= cleanupcnt);
3054 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3055#endif
3056
1602#if EV_ASYNC_ENABLE 3057#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 3058 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 3059 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 3060#endif
1606 3061
3062#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 3063 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 3064 array_verify (EV_A_ (W *)prepares, preparecnt);
3065#endif
1609 3066
3067#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 3068 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 3069 array_verify (EV_A_ (W *)checks, checkcnt);
3070#endif
1612 3071
1613# if 0 3072# if 0
3073#if EV_CHILD_ENABLE
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3074 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3075 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3076#endif
1616# endif 3077# endif
1617#endif 3078#endif
1618} 3079}
1619 3080#endif
1620#endif /* multiplicity */
1621 3081
1622#if EV_MULTIPLICITY 3082#if EV_MULTIPLICITY
1623struct ev_loop * 3083struct ev_loop * ecb_cold
1624ev_default_loop_init (unsigned int flags)
1625#else 3084#else
1626int 3085int
3086#endif
1627ev_default_loop (unsigned int flags) 3087ev_default_loop (unsigned int flags) EV_THROW
1628#endif
1629{ 3088{
1630 if (!ev_default_loop_ptr) 3089 if (!ev_default_loop_ptr)
1631 { 3090 {
1632#if EV_MULTIPLICITY 3091#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3092 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 3093#else
1635 ev_default_loop_ptr = 1; 3094 ev_default_loop_ptr = 1;
1636#endif 3095#endif
1637 3096
1638 loop_init (EV_A_ flags); 3097 loop_init (EV_A_ flags);
1639 3098
1640 if (ev_backend (EV_A)) 3099 if (ev_backend (EV_A))
1641 { 3100 {
1642#ifndef _WIN32 3101#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 3102 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 3103 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 3104 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3105 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 3106#endif
… …
1652 3111
1653 return ev_default_loop_ptr; 3112 return ev_default_loop_ptr;
1654} 3113}
1655 3114
1656void 3115void
1657ev_default_destroy (void) 3116ev_loop_fork (EV_P) EV_THROW
1658{ 3117{
1659#if EV_MULTIPLICITY 3118 postfork = 1;
1660 struct ev_loop *loop = ev_default_loop_ptr;
1661#endif
1662
1663#ifndef _WIN32
1664 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev);
1666#endif
1667
1668 loop_destroy (EV_A);
1669}
1670
1671void
1672ev_default_fork (void)
1673{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */
1680} 3119}
1681 3120
1682/*****************************************************************************/ 3121/*****************************************************************************/
1683 3122
1684void 3123void
1685ev_invoke (EV_P_ void *w, int revents) 3124ev_invoke (EV_P_ void *w, int revents)
1686{ 3125{
1687 EV_CB_INVOKE ((W)w, revents); 3126 EV_CB_INVOKE ((W)w, revents);
1688} 3127}
1689 3128
1690void inline_speed 3129unsigned int
1691call_pending (EV_P) 3130ev_pending_count (EV_P) EV_THROW
1692{ 3131{
1693 int pri; 3132 int pri;
3133 unsigned int count = 0;
1694 3134
1695 for (pri = NUMPRI; pri--; ) 3135 for (pri = NUMPRI; pri--; )
3136 count += pendingcnt [pri];
3137
3138 return count;
3139}
3140
3141void noinline
3142ev_invoke_pending (EV_P)
3143{
3144 pendingpri = NUMPRI;
3145
3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3147 {
3148 --pendingpri;
3149
1696 while (pendingcnt [pri]) 3150 while (pendingcnt [pendingpri])
1697 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1699
1700 if (expect_true (p->w))
1701 { 3151 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1703 3153
1704 p->w->pending = 0; 3154 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 3155 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 3156 EV_FREQUENT_CHECK;
1707 } 3157 }
1708 } 3158 }
1709} 3159}
1710 3160
1711#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
1712void inline_size 3162/* make idle watchers pending. this handles the "call-idle */
3163/* only when higher priorities are idle" logic */
3164inline_size void
1713idle_reify (EV_P) 3165idle_reify (EV_P)
1714{ 3166{
1715 if (expect_false (idleall)) 3167 if (expect_false (idleall))
1716 { 3168 {
1717 int pri; 3169 int pri;
… …
1729 } 3181 }
1730 } 3182 }
1731} 3183}
1732#endif 3184#endif
1733 3185
1734void inline_size 3186/* make timers pending */
3187inline_size void
1735timers_reify (EV_P) 3188timers_reify (EV_P)
1736{ 3189{
1737 EV_FREQUENT_CHECK; 3190 EV_FREQUENT_CHECK;
1738 3191
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 3192 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 3193 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 3194 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 3195 {
3196 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
3197
3198 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
3199
3200 /* first reschedule or stop timer */
3201 if (w->repeat)
3202 {
1748 ev_at (w) += w->repeat; 3203 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 3204 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 3205 ev_at (w) = mn_now;
1751 3206
1752 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3207 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1753 3208
1754 ANHE_at_cache (timers [HEAP0]); 3209 ANHE_at_cache (timers [HEAP0]);
1755 downheap (timers, timercnt, HEAP0); 3210 downheap (timers, timercnt, HEAP0);
3211 }
3212 else
3213 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
3214
3215 EV_FREQUENT_CHECK;
3216 feed_reverse (EV_A_ (W)w);
1756 } 3217 }
1757 else 3218 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 3219
1760 EV_FREQUENT_CHECK; 3220 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 3221 }
1763} 3222}
1764 3223
1765#if EV_PERIODIC_ENABLE 3224#if EV_PERIODIC_ENABLE
1766void inline_size 3225
3226static void noinline
3227periodic_recalc (EV_P_ ev_periodic *w)
3228{
3229 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3230 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3231
3232 /* the above almost always errs on the low side */
3233 while (at <= ev_rt_now)
3234 {
3235 ev_tstamp nat = at + w->interval;
3236
3237 /* when resolution fails us, we use ev_rt_now */
3238 if (expect_false (nat == at))
3239 {
3240 at = ev_rt_now;
3241 break;
3242 }
3243
3244 at = nat;
3245 }
3246
3247 ev_at (w) = at;
3248}
3249
3250/* make periodics pending */
3251inline_size void
1767periodics_reify (EV_P) 3252periodics_reify (EV_P)
1768{ 3253{
1769 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
1770 3255
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3256 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 3257 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3258 do
1774
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 3259 {
3260 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
3261
3262 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
3263
3264 /* first reschedule or stop timer */
3265 if (w->reschedule_cb)
3266 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3267 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 3268
1782 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 3269 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1783 3270
1784 ANHE_at_cache (periodics [HEAP0]); 3271 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0); 3272 downheap (periodics, periodiccnt, HEAP0);
3273 }
3274 else if (w->interval)
3275 {
3276 periodic_recalc (EV_A_ w);
3277 ANHE_at_cache (periodics [HEAP0]);
3278 downheap (periodics, periodiccnt, HEAP0);
3279 }
3280 else
3281 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
3282
3283 EV_FREQUENT_CHECK;
3284 feed_reverse (EV_A_ (W)w);
1786 } 3285 }
1787 else if (w->interval) 3286 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 3287
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 3288 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 3289 }
1812} 3290}
1813 3291
3292/* simply recalculate all periodics */
3293/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 3294static void noinline ecb_cold
1815periodics_reschedule (EV_P) 3295periodics_reschedule (EV_P)
1816{ 3296{
1817 int i; 3297 int i;
1818 3298
1819 /* adjust periodics after time jump */ 3299 /* adjust periodics after time jump */
… …
1822 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3302 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1823 3303
1824 if (w->reschedule_cb) 3304 if (w->reschedule_cb)
1825 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3305 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1826 else if (w->interval) 3306 else if (w->interval)
1827 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3307 periodic_recalc (EV_A_ w);
1828 3308
1829 ANHE_at_cache (periodics [i]); 3309 ANHE_at_cache (periodics [i]);
1830 } 3310 }
1831 3311
1832 reheap (periodics, periodiccnt); 3312 reheap (periodics, periodiccnt);
1833} 3313}
1834#endif 3314#endif
1835 3315
1836void inline_speed 3316/* adjust all timers by a given offset */
3317static void noinline ecb_cold
3318timers_reschedule (EV_P_ ev_tstamp adjust)
3319{
3320 int i;
3321
3322 for (i = 0; i < timercnt; ++i)
3323 {
3324 ANHE *he = timers + i + HEAP0;
3325 ANHE_w (*he)->at += adjust;
3326 ANHE_at_cache (*he);
3327 }
3328}
3329
3330/* fetch new monotonic and realtime times from the kernel */
3331/* also detect if there was a timejump, and act accordingly */
3332inline_speed void
1837time_update (EV_P_ ev_tstamp max_block) 3333time_update (EV_P_ ev_tstamp max_block)
1838{ 3334{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 3335#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 3336 if (expect_true (have_monotonic))
1843 { 3337 {
3338 int i;
1844 ev_tstamp odiff = rtmn_diff; 3339 ev_tstamp odiff = rtmn_diff;
1845 3340
1846 mn_now = get_clock (); 3341 mn_now = get_clock ();
1847 3342
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3343 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 * doesn't hurt either as we only do this on time-jumps or 3359 * doesn't hurt either as we only do this on time-jumps or
1865 * in the unlikely event of having been preempted here. 3360 * in the unlikely event of having been preempted here.
1866 */ 3361 */
1867 for (i = 4; --i; ) 3362 for (i = 4; --i; )
1868 { 3363 {
3364 ev_tstamp diff;
1869 rtmn_diff = ev_rt_now - mn_now; 3365 rtmn_diff = ev_rt_now - mn_now;
1870 3366
3367 diff = odiff - rtmn_diff;
3368
1871 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3369 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1872 return; /* all is well */ 3370 return; /* all is well */
1873 3371
1874 ev_rt_now = ev_time (); 3372 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 3373 mn_now = get_clock ();
1876 now_floor = mn_now; 3374 now_floor = mn_now;
1877 } 3375 }
1878 3376
3377 /* no timer adjustment, as the monotonic clock doesn't jump */
3378 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 3379# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 3380 periodics_reschedule (EV_A);
1881# endif 3381# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 3382 }
1885 else 3383 else
1886#endif 3384#endif
1887 { 3385 {
1888 ev_rt_now = ev_time (); 3386 ev_rt_now = ev_time ();
1889 3387
1890 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3388 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1891 { 3389 {
3390 /* adjust timers. this is easy, as the offset is the same for all of them */
3391 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1892#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 3393 periodics_reschedule (EV_A);
1894#endif 3394#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 3395 }
1903 3396
1904 mn_now = ev_rt_now; 3397 mn_now = ev_rt_now;
1905 } 3398 }
1906} 3399}
1907 3400
1908void 3401int
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 3402ev_run (EV_P_ int flags)
1930{ 3403{
3404#if EV_FEATURE_API
3405 ++loop_depth;
3406#endif
3407
3408 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3409
1931 loop_done = EVUNLOOP_CANCEL; 3410 loop_done = EVBREAK_CANCEL;
1932 3411
1933 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3412 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1934 3413
1935 do 3414 do
1936 { 3415 {
1937#if EV_VERIFY >= 2 3416#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 3417 ev_verify (EV_A);
1939#endif 3418#endif
1940 3419
1941#ifndef _WIN32 3420#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 3421 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 3422 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 3430 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 3431 if (expect_false (postfork))
1953 if (forkcnt) 3432 if (forkcnt)
1954 { 3433 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3434 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 3435 EV_INVOKE_PENDING;
1957 } 3436 }
1958#endif 3437#endif
1959 3438
3439#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 3440 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 3441 if (expect_false (preparecnt))
1962 { 3442 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3443 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 3444 EV_INVOKE_PENDING;
1965 } 3445 }
3446#endif
1966 3447
1967 if (expect_false (!activecnt)) 3448 if (expect_false (loop_done))
1968 break; 3449 break;
1969 3450
1970 /* we might have forked, so reify kernel state if necessary */ 3451 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 3452 if (expect_false (postfork))
1972 loop_fork (EV_A); 3453 loop_fork (EV_A);
… …
1977 /* calculate blocking time */ 3458 /* calculate blocking time */
1978 { 3459 {
1979 ev_tstamp waittime = 0.; 3460 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 3461 ev_tstamp sleeptime = 0.;
1981 3462
3463 /* remember old timestamp for io_blocktime calculation */
3464 ev_tstamp prev_mn_now = mn_now;
3465
3466 /* update time to cancel out callback processing overhead */
3467 time_update (EV_A_ 1e100);
3468
3469 /* from now on, we want a pipe-wake-up */
3470 pipe_write_wanted = 1;
3471
3472 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3473
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3474 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1983 { 3475 {
1984 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100);
1986
1987 waittime = MAX_BLOCKTIME; 3476 waittime = MAX_BLOCKTIME;
1988 3477
1989 if (timercnt) 3478 if (timercnt)
1990 { 3479 {
1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3480 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1992 if (waittime > to) waittime = to; 3481 if (waittime > to) waittime = to;
1993 } 3482 }
1994 3483
1995#if EV_PERIODIC_ENABLE 3484#if EV_PERIODIC_ENABLE
1996 if (periodiccnt) 3485 if (periodiccnt)
1997 { 3486 {
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3487 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1999 if (waittime > to) waittime = to; 3488 if (waittime > to) waittime = to;
2000 } 3489 }
2001#endif 3490#endif
2002 3491
3492 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 3493 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 3494 waittime = timeout_blocktime;
2005 3495
2006 sleeptime = waittime - backend_fudge; 3496 /* at this point, we NEED to wait, so we have to ensure */
3497 /* to pass a minimum nonzero value to the backend */
3498 if (expect_false (waittime < backend_mintime))
3499 waittime = backend_mintime;
2007 3500
3501 /* extra check because io_blocktime is commonly 0 */
2008 if (expect_true (sleeptime > io_blocktime)) 3502 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 3503 {
3504 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3505
3506 if (sleeptime > waittime - backend_mintime)
3507 sleeptime = waittime - backend_mintime;
3508
3509 if (expect_true (sleeptime > 0.))
3510 {
2013 ev_sleep (sleeptime); 3511 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 3512 waittime -= sleeptime;
3513 }
2015 } 3514 }
2016 } 3515 }
2017 3516
3517#if EV_FEATURE_API
2018 ++loop_count; 3518 ++loop_count;
3519#endif
3520 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2019 backend_poll (EV_A_ waittime); 3521 backend_poll (EV_A_ waittime);
3522 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3523
3524 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3525
3526 ECB_MEMORY_FENCE_ACQUIRE;
3527 if (pipe_write_skipped)
3528 {
3529 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3530 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3531 }
3532
2020 3533
2021 /* update ev_rt_now, do magic */ 3534 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 3535 time_update (EV_A_ waittime + sleeptime);
2023 } 3536 }
2024 3537
… …
2031#if EV_IDLE_ENABLE 3544#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 3545 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 3546 idle_reify (EV_A);
2034#endif 3547#endif
2035 3548
3549#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 3550 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 3551 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3552 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3553#endif
2039 3554
2040 call_pending (EV_A); 3555 EV_INVOKE_PENDING;
2041 } 3556 }
2042 while (expect_true ( 3557 while (expect_true (
2043 activecnt 3558 activecnt
2044 && !loop_done 3559 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3560 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2046 )); 3561 ));
2047 3562
2048 if (loop_done == EVUNLOOP_ONE) 3563 if (loop_done == EVBREAK_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 3564 loop_done = EVBREAK_CANCEL;
3565
3566#if EV_FEATURE_API
3567 --loop_depth;
3568#endif
3569
3570 return activecnt;
2050} 3571}
2051 3572
2052void 3573void
2053ev_unloop (EV_P_ int how) 3574ev_break (EV_P_ int how) EV_THROW
2054{ 3575{
2055 loop_done = how; 3576 loop_done = how;
2056} 3577}
2057 3578
3579void
3580ev_ref (EV_P) EV_THROW
3581{
3582 ++activecnt;
3583}
3584
3585void
3586ev_unref (EV_P) EV_THROW
3587{
3588 --activecnt;
3589}
3590
3591void
3592ev_now_update (EV_P) EV_THROW
3593{
3594 time_update (EV_A_ 1e100);
3595}
3596
3597void
3598ev_suspend (EV_P) EV_THROW
3599{
3600 ev_now_update (EV_A);
3601}
3602
3603void
3604ev_resume (EV_P) EV_THROW
3605{
3606 ev_tstamp mn_prev = mn_now;
3607
3608 ev_now_update (EV_A);
3609 timers_reschedule (EV_A_ mn_now - mn_prev);
3610#if EV_PERIODIC_ENABLE
3611 /* TODO: really do this? */
3612 periodics_reschedule (EV_A);
3613#endif
3614}
3615
2058/*****************************************************************************/ 3616/*****************************************************************************/
3617/* singly-linked list management, used when the expected list length is short */
2059 3618
2060void inline_size 3619inline_size void
2061wlist_add (WL *head, WL elem) 3620wlist_add (WL *head, WL elem)
2062{ 3621{
2063 elem->next = *head; 3622 elem->next = *head;
2064 *head = elem; 3623 *head = elem;
2065} 3624}
2066 3625
2067void inline_size 3626inline_size void
2068wlist_del (WL *head, WL elem) 3627wlist_del (WL *head, WL elem)
2069{ 3628{
2070 while (*head) 3629 while (*head)
2071 { 3630 {
2072 if (*head == elem) 3631 if (expect_true (*head == elem))
2073 { 3632 {
2074 *head = elem->next; 3633 *head = elem->next;
2075 return; 3634 break;
2076 } 3635 }
2077 3636
2078 head = &(*head)->next; 3637 head = &(*head)->next;
2079 } 3638 }
2080} 3639}
2081 3640
2082void inline_speed 3641/* internal, faster, version of ev_clear_pending */
3642inline_speed void
2083clear_pending (EV_P_ W w) 3643clear_pending (EV_P_ W w)
2084{ 3644{
2085 if (w->pending) 3645 if (w->pending)
2086 { 3646 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3647 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 3648 w->pending = 0;
2089 } 3649 }
2090} 3650}
2091 3651
2092int 3652int
2093ev_clear_pending (EV_P_ void *w) 3653ev_clear_pending (EV_P_ void *w) EV_THROW
2094{ 3654{
2095 W w_ = (W)w; 3655 W w_ = (W)w;
2096 int pending = w_->pending; 3656 int pending = w_->pending;
2097 3657
2098 if (expect_true (pending)) 3658 if (expect_true (pending))
2099 { 3659 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3660 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3661 p->w = (W)&pending_w;
2101 w_->pending = 0; 3662 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 3663 return p->events;
2104 } 3664 }
2105 else 3665 else
2106 return 0; 3666 return 0;
2107} 3667}
2108 3668
2109void inline_size 3669inline_size void
2110pri_adjust (EV_P_ W w) 3670pri_adjust (EV_P_ W w)
2111{ 3671{
2112 int pri = w->priority; 3672 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3673 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3674 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 3675 ev_set_priority (w, pri);
2116} 3676}
2117 3677
2118void inline_speed 3678inline_speed void
2119ev_start (EV_P_ W w, int active) 3679ev_start (EV_P_ W w, int active)
2120{ 3680{
2121 pri_adjust (EV_A_ w); 3681 pri_adjust (EV_A_ w);
2122 w->active = active; 3682 w->active = active;
2123 ev_ref (EV_A); 3683 ev_ref (EV_A);
2124} 3684}
2125 3685
2126void inline_size 3686inline_size void
2127ev_stop (EV_P_ W w) 3687ev_stop (EV_P_ W w)
2128{ 3688{
2129 ev_unref (EV_A); 3689 ev_unref (EV_A);
2130 w->active = 0; 3690 w->active = 0;
2131} 3691}
2132 3692
2133/*****************************************************************************/ 3693/*****************************************************************************/
2134 3694
2135void noinline 3695void noinline
2136ev_io_start (EV_P_ ev_io *w) 3696ev_io_start (EV_P_ ev_io *w) EV_THROW
2137{ 3697{
2138 int fd = w->fd; 3698 int fd = w->fd;
2139 3699
2140 if (expect_false (ev_is_active (w))) 3700 if (expect_false (ev_is_active (w)))
2141 return; 3701 return;
2142 3702
2143 assert (("ev_io_start called with negative fd", fd >= 0)); 3703 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3704 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2144 3705
2145 EV_FREQUENT_CHECK; 3706 EV_FREQUENT_CHECK;
2146 3707
2147 ev_start (EV_A_ (W)w, 1); 3708 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3709 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 3710 wlist_add (&anfds[fd].head, (WL)w);
2150 3711
3712 /* common bug, apparently */
3713 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3714
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3715 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 3716 w->events &= ~EV__IOFDSET;
2153 3717
2154 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
2155} 3719}
2156 3720
2157void noinline 3721void noinline
2158ev_io_stop (EV_P_ ev_io *w) 3722ev_io_stop (EV_P_ ev_io *w) EV_THROW
2159{ 3723{
2160 clear_pending (EV_A_ (W)w); 3724 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 3725 if (expect_false (!ev_is_active (w)))
2162 return; 3726 return;
2163 3727
2164 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3728 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2165 3729
2166 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2167 3731
2168 wlist_del (&anfds[w->fd].head, (WL)w); 3732 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 3733 ev_stop (EV_A_ (W)w);
2170 3734
2171 fd_change (EV_A_ w->fd, 1); 3735 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 3736
2173 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
2174} 3738}
2175 3739
2176void noinline 3740void noinline
2177ev_timer_start (EV_P_ ev_timer *w) 3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2178{ 3742{
2179 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2180 return; 3744 return;
2181 3745
2182 ev_at (w) += mn_now; 3746 ev_at (w) += mn_now;
2183 3747
2184 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3748 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2185 3749
2186 EV_FREQUENT_CHECK; 3750 EV_FREQUENT_CHECK;
2187 3751
2188 ++timercnt; 3752 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3753 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 3756 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 3757 upheap (timers, ev_active (w));
2194 3758
2195 EV_FREQUENT_CHECK; 3759 EV_FREQUENT_CHECK;
2196 3760
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 3762}
2199 3763
2200void noinline 3764void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2202{ 3766{
2203 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2204 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2205 return; 3769 return;
2206 3770
2207 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2208 3772
2209 { 3773 {
2210 int active = ev_active (w); 3774 int active = ev_active (w);
2211 3775
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3776 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 3777
2214 --timercnt; 3778 --timercnt;
2215 3779
2216 if (expect_true (active < timercnt + HEAP0)) 3780 if (expect_true (active < timercnt + HEAP0))
2217 { 3781 {
2218 timers [active] = timers [timercnt + HEAP0]; 3782 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 3783 adjustheap (timers, timercnt, active);
2220 } 3784 }
2221 } 3785 }
2222 3786
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 3787 ev_at (w) -= mn_now;
2226 3788
2227 ev_stop (EV_A_ (W)w); 3789 ev_stop (EV_A_ (W)w);
3790
3791 EV_FREQUENT_CHECK;
2228} 3792}
2229 3793
2230void noinline 3794void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2232{ 3796{
2233 EV_FREQUENT_CHECK; 3797 EV_FREQUENT_CHECK;
3798
3799 clear_pending (EV_A_ (W)w);
2234 3800
2235 if (ev_is_active (w)) 3801 if (ev_is_active (w))
2236 { 3802 {
2237 if (w->repeat) 3803 if (w->repeat)
2238 { 3804 {
… …
2250 } 3816 }
2251 3817
2252 EV_FREQUENT_CHECK; 3818 EV_FREQUENT_CHECK;
2253} 3819}
2254 3820
3821ev_tstamp
3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3823{
3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3825}
3826
2255#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2256void noinline 3828void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2258{ 3830{
2259 if (expect_false (ev_is_active (w))) 3831 if (expect_false (ev_is_active (w)))
2260 return; 3832 return;
2261 3833
2262 if (w->reschedule_cb) 3834 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 3836 else if (w->interval)
2265 { 3837 {
2266 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3838 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 3839 periodic_recalc (EV_A_ w);
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 3840 }
2270 else 3841 else
2271 ev_at (w) = w->offset; 3842 ev_at (w) = w->offset;
2272 3843
2273 EV_FREQUENT_CHECK; 3844 EV_FREQUENT_CHECK;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 3850 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 3851 upheap (periodics, ev_active (w));
2281 3852
2282 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2283 3854
2284 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2285} 3856}
2286 3857
2287void noinline 3858void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2289{ 3860{
2290 clear_pending (EV_A_ (W)w); 3861 clear_pending (EV_A_ (W)w);
2291 if (expect_false (!ev_is_active (w))) 3862 if (expect_false (!ev_is_active (w)))
2292 return; 3863 return;
2293 3864
2294 EV_FREQUENT_CHECK; 3865 EV_FREQUENT_CHECK;
2295 3866
2296 { 3867 {
2297 int active = ev_active (w); 3868 int active = ev_active (w);
2298 3869
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3870 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 3871
2301 --periodiccnt; 3872 --periodiccnt;
2302 3873
2303 if (expect_true (active < periodiccnt + HEAP0)) 3874 if (expect_true (active < periodiccnt + HEAP0))
2304 { 3875 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 3876 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 3877 adjustheap (periodics, periodiccnt, active);
2307 } 3878 }
2308 } 3879 }
2309 3880
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 3881 ev_stop (EV_A_ (W)w);
3882
3883 EV_FREQUENT_CHECK;
2313} 3884}
2314 3885
2315void noinline 3886void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2317{ 3888{
2318 /* TODO: use adjustheap and recalculation */ 3889 /* TODO: use adjustheap and recalculation */
2319 ev_periodic_stop (EV_A_ w); 3890 ev_periodic_stop (EV_A_ w);
2320 ev_periodic_start (EV_A_ w); 3891 ev_periodic_start (EV_A_ w);
2321} 3892}
… …
2323 3894
2324#ifndef SA_RESTART 3895#ifndef SA_RESTART
2325# define SA_RESTART 0 3896# define SA_RESTART 0
2326#endif 3897#endif
2327 3898
3899#if EV_SIGNAL_ENABLE
3900
2328void noinline 3901void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2330{ 3903{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2335 return; 3905 return;
2336 3906
2337 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2338 3908
2339 evpipe_init (EV_A); 3909#if EV_MULTIPLICITY
3910 assert (("libev: a signal must not be attached to two different loops",
3911 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2340 3912
2341 EV_FREQUENT_CHECK; 3913 signals [w->signum - 1].loop = EV_A;
3914 ECB_MEMORY_FENCE_RELEASE;
3915#endif
2342 3916
3917 EV_FREQUENT_CHECK;
3918
3919#if EV_USE_SIGNALFD
3920 if (sigfd == -2)
2343 { 3921 {
2344#ifndef _WIN32 3922 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 3923 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 3924 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 3925
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3926 if (sigfd >= 0)
3927 {
3928 fd_intern (sigfd); /* doing it twice will not hurt */
2351 3929
2352#ifndef _WIN32 3930 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 3931
2354#endif 3932 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3933 ev_set_priority (&sigfd_w, EV_MAXPRI);
3934 ev_io_start (EV_A_ &sigfd_w);
3935 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3936 }
2355 } 3937 }
3938
3939 if (sigfd >= 0)
3940 {
3941 /* TODO: check .head */
3942 sigaddset (&sigfd_set, w->signum);
3943 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3944
3945 signalfd (sigfd, &sigfd_set, 0);
3946 }
3947#endif
2356 3948
2357 ev_start (EV_A_ (W)w, 1); 3949 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 3950 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 3951
2360 if (!((WL)w)->next) 3952 if (!((WL)w)->next)
3953# if EV_USE_SIGNALFD
3954 if (sigfd < 0) /*TODO*/
3955# endif
2361 { 3956 {
2362#if _WIN32 3957# ifdef _WIN32
3958 evpipe_init (EV_A);
3959
2363 signal (w->signum, ev_sighandler); 3960 signal (w->signum, ev_sighandler);
2364#else 3961# else
2365 struct sigaction sa; 3962 struct sigaction sa;
3963
3964 evpipe_init (EV_A);
3965
2366 sa.sa_handler = ev_sighandler; 3966 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 3967 sigfillset (&sa.sa_mask);
2368 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3968 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2369 sigaction (w->signum, &sa, 0); 3969 sigaction (w->signum, &sa, 0);
3970
3971 if (origflags & EVFLAG_NOSIGMASK)
3972 {
3973 sigemptyset (&sa.sa_mask);
3974 sigaddset (&sa.sa_mask, w->signum);
3975 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3976 }
2370#endif 3977#endif
2371 } 3978 }
2372 3979
2373 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2374} 3981}
2375 3982
2376void noinline 3983void noinline
2377ev_signal_stop (EV_P_ ev_signal *w) 3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2378{ 3985{
2379 clear_pending (EV_A_ (W)w); 3986 clear_pending (EV_A_ (W)w);
2380 if (expect_false (!ev_is_active (w))) 3987 if (expect_false (!ev_is_active (w)))
2381 return; 3988 return;
2382 3989
… …
2384 3991
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 3992 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 3993 ev_stop (EV_A_ (W)w);
2387 3994
2388 if (!signals [w->signum - 1].head) 3995 if (!signals [w->signum - 1].head)
3996 {
3997#if EV_MULTIPLICITY
3998 signals [w->signum - 1].loop = 0; /* unattach from signal */
3999#endif
4000#if EV_USE_SIGNALFD
4001 if (sigfd >= 0)
4002 {
4003 sigset_t ss;
4004
4005 sigemptyset (&ss);
4006 sigaddset (&ss, w->signum);
4007 sigdelset (&sigfd_set, w->signum);
4008
4009 signalfd (sigfd, &sigfd_set, 0);
4010 sigprocmask (SIG_UNBLOCK, &ss, 0);
4011 }
4012 else
4013#endif
2389 signal (w->signum, SIG_DFL); 4014 signal (w->signum, SIG_DFL);
4015 }
2390 4016
2391 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2392} 4018}
4019
4020#endif
4021
4022#if EV_CHILD_ENABLE
2393 4023
2394void 4024void
2395ev_child_start (EV_P_ ev_child *w) 4025ev_child_start (EV_P_ ev_child *w) EV_THROW
2396{ 4026{
2397#if EV_MULTIPLICITY 4027#if EV_MULTIPLICITY
2398 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2399#endif 4029#endif
2400 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
2401 return; 4031 return;
2402 4032
2403 EV_FREQUENT_CHECK; 4033 EV_FREQUENT_CHECK;
2404 4034
2405 ev_start (EV_A_ (W)w, 1); 4035 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4036 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 4037
2408 EV_FREQUENT_CHECK; 4038 EV_FREQUENT_CHECK;
2409} 4039}
2410 4040
2411void 4041void
2412ev_child_stop (EV_P_ ev_child *w) 4042ev_child_stop (EV_P_ ev_child *w) EV_THROW
2413{ 4043{
2414 clear_pending (EV_A_ (W)w); 4044 clear_pending (EV_A_ (W)w);
2415 if (expect_false (!ev_is_active (w))) 4045 if (expect_false (!ev_is_active (w)))
2416 return; 4046 return;
2417 4047
2418 EV_FREQUENT_CHECK; 4048 EV_FREQUENT_CHECK;
2419 4049
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4050 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 4051 ev_stop (EV_A_ (W)w);
2422 4052
2423 EV_FREQUENT_CHECK; 4053 EV_FREQUENT_CHECK;
2424} 4054}
4055
4056#endif
2425 4057
2426#if EV_STAT_ENABLE 4058#if EV_STAT_ENABLE
2427 4059
2428# ifdef _WIN32 4060# ifdef _WIN32
2429# undef lstat 4061# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 4062# define lstat(a,b) _stati64 (a,b)
2431# endif 4063# endif
2432 4064
2433#define DEF_STAT_INTERVAL 5.0074891 4065#define DEF_STAT_INTERVAL 5.0074891
4066#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2434#define MIN_STAT_INTERVAL 0.1074891 4067#define MIN_STAT_INTERVAL 0.1074891
2435 4068
2436static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4069static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2437 4070
2438#if EV_USE_INOTIFY 4071#if EV_USE_INOTIFY
2439# define EV_INOTIFY_BUFSIZE 8192 4072
4073/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2440 4075
2441static void noinline 4076static void noinline
2442infy_add (EV_P_ ev_stat *w) 4077infy_add (EV_P_ ev_stat *w)
2443{ 4078{
2444 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4079 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4082 | IN_DONT_FOLLOW | IN_MASK_ADD);
2445 4083
2446 if (w->wd < 0) 4084 if (w->wd >= 0)
4085 {
4086 struct statfs sfs;
4087
4088 /* now local changes will be tracked by inotify, but remote changes won't */
4089 /* unless the filesystem is known to be local, we therefore still poll */
4090 /* also do poll on <2.6.25, but with normal frequency */
4091
4092 if (!fs_2625)
4093 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4094 else if (!statfs (w->path, &sfs)
4095 && (sfs.f_type == 0x1373 /* devfs */
4096 || sfs.f_type == 0x4006 /* fat */
4097 || sfs.f_type == 0x4d44 /* msdos */
4098 || sfs.f_type == 0xEF53 /* ext2/3 */
4099 || sfs.f_type == 0x72b6 /* jffs2 */
4100 || sfs.f_type == 0x858458f6 /* ramfs */
4101 || sfs.f_type == 0x5346544e /* ntfs */
4102 || sfs.f_type == 0x3153464a /* jfs */
4103 || sfs.f_type == 0x9123683e /* btrfs */
4104 || sfs.f_type == 0x52654973 /* reiser3 */
4105 || sfs.f_type == 0x01021994 /* tmpfs */
4106 || sfs.f_type == 0x58465342 /* xfs */))
4107 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4108 else
4109 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2447 { 4110 }
2448 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 4111 else
4112 {
4113 /* can't use inotify, continue to stat */
4114 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2449 4115
2450 /* monitor some parent directory for speedup hints */ 4116 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 4117 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 4118 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4119 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 4120 {
2455 char path [4096]; 4121 char path [4096];
2456 strcpy (path, w->path); 4122 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 4126 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 4127 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 4128
2463 char *pend = strrchr (path, '/'); 4129 char *pend = strrchr (path, '/');
2464 4130
2465 if (!pend) 4131 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 4132 break;
2467 4133
2468 *pend = 0; 4134 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 4135 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 4136 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 4138 }
2473 } 4139 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 4140
2477 if (w->wd >= 0) 4141 if (w->wd >= 0)
2478 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4142 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
4143
4144 /* now re-arm timer, if required */
4145 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4146 ev_timer_again (EV_A_ &w->timer);
4147 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2479} 4148}
2480 4149
2481static void noinline 4150static void noinline
2482infy_del (EV_P_ ev_stat *w) 4151infy_del (EV_P_ ev_stat *w)
2483{ 4152{
… …
2486 4155
2487 if (wd < 0) 4156 if (wd < 0)
2488 return; 4157 return;
2489 4158
2490 w->wd = -2; 4159 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4160 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 4161 wlist_del (&fs_hash [slot].head, (WL)w);
2493 4162
2494 /* remove this watcher, if others are watching it, they will rearm */ 4163 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 4164 inotify_rm_watch (fs_fd, wd);
2496} 4165}
… …
2498static void noinline 4167static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4168infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 4169{
2501 if (slot < 0) 4170 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 4171 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4172 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 4173 infy_wd (EV_A_ slot, wd, ev);
2505 else 4174 else
2506 { 4175 {
2507 WL w_; 4176 WL w_;
2508 4177
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4178 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 4179 {
2511 ev_stat *w = (ev_stat *)w_; 4180 ev_stat *w = (ev_stat *)w_;
2512 w_ = w_->next; /* lets us remove this watcher and all before it */ 4181 w_ = w_->next; /* lets us remove this watcher and all before it */
2513 4182
2514 if (w->wd == wd || wd == -1) 4183 if (w->wd == wd || wd == -1)
2515 { 4184 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4185 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 4186 {
4187 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 4188 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 4189 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 4190 }
2521 4191
2522 stat_timer_cb (EV_A_ &w->timer, 0); 4192 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 4197
2528static void 4198static void
2529infy_cb (EV_P_ ev_io *w, int revents) 4199infy_cb (EV_P_ ev_io *w, int revents)
2530{ 4200{
2531 char buf [EV_INOTIFY_BUFSIZE]; 4201 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 4202 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 4203 int len = read (fs_fd, buf, sizeof (buf));
2535 4204
2536 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4205 for (ofs = 0; ofs < len; )
4206 {
4207 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2537 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4208 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4209 ofs += sizeof (struct inotify_event) + ev->len;
4210 }
2538} 4211}
2539 4212
2540void inline_size 4213inline_size void ecb_cold
2541infy_init (EV_P) 4214ev_check_2625 (EV_P)
2542{ 4215{
2543 if (fs_fd != -2)
2544 return;
2545
2546 /* kernels < 2.6.25 are borked 4216 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */ 4218 */
2549 { 4219 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 4220 return;
2551 int major, minor, micro;
2552 4221
4222 fs_2625 = 1;
4223}
4224
4225inline_size int
4226infy_newfd (void)
4227{
4228#if defined IN_CLOEXEC && defined IN_NONBLOCK
4229 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4230 if (fd >= 0)
4231 return fd;
4232#endif
4233 return inotify_init ();
4234}
4235
4236inline_size void
4237infy_init (EV_P)
4238{
4239 if (fs_fd != -2)
4240 return;
4241
2553 fs_fd = -1; 4242 fs_fd = -1;
2554 4243
2555 if (uname (&buf)) 4244 ev_check_2625 (EV_A);
2556 return;
2557 4245
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 4246 fs_fd = infy_newfd ();
2568 4247
2569 if (fs_fd >= 0) 4248 if (fs_fd >= 0)
2570 { 4249 {
4250 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4251 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 4252 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 4253 ev_io_start (EV_A_ &fs_w);
4254 ev_unref (EV_A);
2574 } 4255 }
2575} 4256}
2576 4257
2577void inline_size 4258inline_size void
2578infy_fork (EV_P) 4259infy_fork (EV_P)
2579{ 4260{
2580 int slot; 4261 int slot;
2581 4262
2582 if (fs_fd < 0) 4263 if (fs_fd < 0)
2583 return; 4264 return;
2584 4265
4266 ev_ref (EV_A);
4267 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 4268 close (fs_fd);
2586 fs_fd = inotify_init (); 4269 fs_fd = infy_newfd ();
2587 4270
4271 if (fs_fd >= 0)
4272 {
4273 fd_intern (fs_fd);
4274 ev_io_set (&fs_w, fs_fd, EV_READ);
4275 ev_io_start (EV_A_ &fs_w);
4276 ev_unref (EV_A);
4277 }
4278
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4279 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 4280 {
2590 WL w_ = fs_hash [slot].head; 4281 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 4282 fs_hash [slot].head = 0;
2592 4283
2593 while (w_) 4284 while (w_)
… …
2598 w->wd = -1; 4289 w->wd = -1;
2599 4290
2600 if (fs_fd >= 0) 4291 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 4292 infy_add (EV_A_ w); /* re-add, no matter what */
2602 else 4293 else
4294 {
4295 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4296 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2603 ev_timer_start (EV_A_ &w->timer); 4297 ev_timer_again (EV_A_ &w->timer);
4298 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4299 }
2604 } 4300 }
2605 } 4301 }
2606} 4302}
2607 4303
2608#endif 4304#endif
… …
2612#else 4308#else
2613# define EV_LSTAT(p,b) lstat (p, b) 4309# define EV_LSTAT(p,b) lstat (p, b)
2614#endif 4310#endif
2615 4311
2616void 4312void
2617ev_stat_stat (EV_P_ ev_stat *w) 4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2618{ 4314{
2619 if (lstat (w->path, &w->attr) < 0) 4315 if (lstat (w->path, &w->attr) < 0)
2620 w->attr.st_nlink = 0; 4316 w->attr.st_nlink = 0;
2621 else if (!w->attr.st_nlink) 4317 else if (!w->attr.st_nlink)
2622 w->attr.st_nlink = 1; 4318 w->attr.st_nlink = 1;
… …
2625static void noinline 4321static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4322stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 4323{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4324 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 4325
2630 /* we copy this here each the time so that */ 4326 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 4327 ev_stat_stat (EV_A_ w);
2634 4328
2635 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4329 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2636 if ( 4330 if (
2637 w->prev.st_dev != w->attr.st_dev 4331 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 4332 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 4333 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 4334 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 4335 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 4336 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 4337 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 4338 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 4339 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 4340 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 4341 || prev.st_ctime != w->attr.st_ctime
2648 ) { 4342 ) {
4343 /* we only update w->prev on actual differences */
4344 /* in case we test more often than invoke the callback, */
4345 /* to ensure that prev is always different to attr */
4346 w->prev = prev;
4347
2649 #if EV_USE_INOTIFY 4348 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 4349 if (fs_fd >= 0)
2651 { 4350 {
2652 infy_del (EV_A_ w); 4351 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 4352 infy_add (EV_A_ w);
… …
2658 ev_feed_event (EV_A_ w, EV_STAT); 4357 ev_feed_event (EV_A_ w, EV_STAT);
2659 } 4358 }
2660} 4359}
2661 4360
2662void 4361void
2663ev_stat_start (EV_P_ ev_stat *w) 4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2664{ 4363{
2665 if (expect_false (ev_is_active (w))) 4364 if (expect_false (ev_is_active (w)))
2666 return; 4365 return;
2667 4366
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 4367 ev_stat_stat (EV_A_ w);
2673 4368
4369 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 4370 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 4371
2677 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 4372 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2678 ev_set_priority (&w->timer, ev_priority (w)); 4373 ev_set_priority (&w->timer, ev_priority (w));
2679 4374
2680#if EV_USE_INOTIFY 4375#if EV_USE_INOTIFY
2681 infy_init (EV_A); 4376 infy_init (EV_A);
2682 4377
2683 if (fs_fd >= 0) 4378 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 4379 infy_add (EV_A_ w);
2685 else 4380 else
2686#endif 4381#endif
4382 {
2687 ev_timer_start (EV_A_ &w->timer); 4383 ev_timer_again (EV_A_ &w->timer);
4384 ev_unref (EV_A);
4385 }
2688 4386
2689 ev_start (EV_A_ (W)w, 1); 4387 ev_start (EV_A_ (W)w, 1);
2690 4388
2691 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
2692} 4390}
2693 4391
2694void 4392void
2695ev_stat_stop (EV_P_ ev_stat *w) 4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2696{ 4394{
2697 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
2698 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
2699 return; 4397 return;
2700 4398
2701 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
2702 4400
2703#if EV_USE_INOTIFY 4401#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 4402 infy_del (EV_A_ w);
2705#endif 4403#endif
4404
4405 if (ev_is_active (&w->timer))
4406 {
4407 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 4408 ev_timer_stop (EV_A_ &w->timer);
4409 }
2707 4410
2708 ev_stop (EV_A_ (W)w); 4411 ev_stop (EV_A_ (W)w);
2709 4412
2710 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2711} 4414}
2712#endif 4415#endif
2713 4416
2714#if EV_IDLE_ENABLE 4417#if EV_IDLE_ENABLE
2715void 4418void
2716ev_idle_start (EV_P_ ev_idle *w) 4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2717{ 4420{
2718 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
2719 return; 4422 return;
2720 4423
2721 pri_adjust (EV_A_ (W)w); 4424 pri_adjust (EV_A_ (W)w);
… …
2734 4437
2735 EV_FREQUENT_CHECK; 4438 EV_FREQUENT_CHECK;
2736} 4439}
2737 4440
2738void 4441void
2739ev_idle_stop (EV_P_ ev_idle *w) 4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2740{ 4443{
2741 clear_pending (EV_A_ (W)w); 4444 clear_pending (EV_A_ (W)w);
2742 if (expect_false (!ev_is_active (w))) 4445 if (expect_false (!ev_is_active (w)))
2743 return; 4446 return;
2744 4447
… …
2756 4459
2757 EV_FREQUENT_CHECK; 4460 EV_FREQUENT_CHECK;
2758} 4461}
2759#endif 4462#endif
2760 4463
4464#if EV_PREPARE_ENABLE
2761void 4465void
2762ev_prepare_start (EV_P_ ev_prepare *w) 4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2763{ 4467{
2764 if (expect_false (ev_is_active (w))) 4468 if (expect_false (ev_is_active (w)))
2765 return; 4469 return;
2766 4470
2767 EV_FREQUENT_CHECK; 4471 EV_FREQUENT_CHECK;
… …
2772 4476
2773 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
2774} 4478}
2775 4479
2776void 4480void
2777ev_prepare_stop (EV_P_ ev_prepare *w) 4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2778{ 4482{
2779 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
2780 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
2781 return; 4485 return;
2782 4486
… …
2791 4495
2792 ev_stop (EV_A_ (W)w); 4496 ev_stop (EV_A_ (W)w);
2793 4497
2794 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
2795} 4499}
4500#endif
2796 4501
4502#if EV_CHECK_ENABLE
2797void 4503void
2798ev_check_start (EV_P_ ev_check *w) 4504ev_check_start (EV_P_ ev_check *w) EV_THROW
2799{ 4505{
2800 if (expect_false (ev_is_active (w))) 4506 if (expect_false (ev_is_active (w)))
2801 return; 4507 return;
2802 4508
2803 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
… …
2808 4514
2809 EV_FREQUENT_CHECK; 4515 EV_FREQUENT_CHECK;
2810} 4516}
2811 4517
2812void 4518void
2813ev_check_stop (EV_P_ ev_check *w) 4519ev_check_stop (EV_P_ ev_check *w) EV_THROW
2814{ 4520{
2815 clear_pending (EV_A_ (W)w); 4521 clear_pending (EV_A_ (W)w);
2816 if (expect_false (!ev_is_active (w))) 4522 if (expect_false (!ev_is_active (w)))
2817 return; 4523 return;
2818 4524
… …
2827 4533
2828 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
2829 4535
2830 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
2831} 4537}
4538#endif
2832 4539
2833#if EV_EMBED_ENABLE 4540#if EV_EMBED_ENABLE
2834void noinline 4541void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2836{ 4543{
2837 ev_loop (w->other, EVLOOP_NONBLOCK); 4544 ev_run (w->other, EVRUN_NOWAIT);
2838} 4545}
2839 4546
2840static void 4547static void
2841embed_io_cb (EV_P_ ev_io *io, int revents) 4548embed_io_cb (EV_P_ ev_io *io, int revents)
2842{ 4549{
2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4550 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2844 4551
2845 if (ev_cb (w)) 4552 if (ev_cb (w))
2846 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4553 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2847 else 4554 else
2848 ev_loop (w->other, EVLOOP_NONBLOCK); 4555 ev_run (w->other, EVRUN_NOWAIT);
2849} 4556}
2850 4557
2851static void 4558static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4559embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 4560{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4561 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 4562
2856 { 4563 {
2857 struct ev_loop *loop = w->other; 4564 EV_P = w->other;
2858 4565
2859 while (fdchangecnt) 4566 while (fdchangecnt)
2860 { 4567 {
2861 fd_reify (EV_A); 4568 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4569 ev_run (EV_A_ EVRUN_NOWAIT);
2863 } 4570 }
2864 } 4571 }
2865} 4572}
2866 4573
2867static void 4574static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4575embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 4576{
2870 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4577 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2871 4578
4579 ev_embed_stop (EV_A_ w);
4580
2872 { 4581 {
2873 struct ev_loop *loop = w->other; 4582 EV_P = w->other;
2874 4583
2875 ev_loop_fork (EV_A); 4584 ev_loop_fork (EV_A);
4585 ev_run (EV_A_ EVRUN_NOWAIT);
2876 } 4586 }
4587
4588 ev_embed_start (EV_A_ w);
2877} 4589}
2878 4590
2879#if 0 4591#if 0
2880static void 4592static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4593embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2883 ev_idle_stop (EV_A_ idle); 4595 ev_idle_stop (EV_A_ idle);
2884} 4596}
2885#endif 4597#endif
2886 4598
2887void 4599void
2888ev_embed_start (EV_P_ ev_embed *w) 4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2889{ 4601{
2890 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
2891 return; 4603 return;
2892 4604
2893 { 4605 {
2894 struct ev_loop *loop = w->other; 4606 EV_P = w->other;
2895 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4607 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2896 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4608 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2897 } 4609 }
2898 4610
2899 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
2900 4612
… …
2914 4626
2915 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
2916} 4628}
2917 4629
2918void 4630void
2919ev_embed_stop (EV_P_ ev_embed *w) 4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2920{ 4632{
2921 clear_pending (EV_A_ (W)w); 4633 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4634 if (expect_false (!ev_is_active (w)))
2923 return; 4635 return;
2924 4636
… …
2926 4638
2927 ev_io_stop (EV_A_ &w->io); 4639 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 4640 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 4641 ev_fork_stop (EV_A_ &w->fork);
2930 4642
4643 ev_stop (EV_A_ (W)w);
4644
2931 EV_FREQUENT_CHECK; 4645 EV_FREQUENT_CHECK;
2932} 4646}
2933#endif 4647#endif
2934 4648
2935#if EV_FORK_ENABLE 4649#if EV_FORK_ENABLE
2936void 4650void
2937ev_fork_start (EV_P_ ev_fork *w) 4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2938{ 4652{
2939 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
2940 return; 4654 return;
2941 4655
2942 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
… …
2947 4661
2948 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
2949} 4663}
2950 4664
2951void 4665void
2952ev_fork_stop (EV_P_ ev_fork *w) 4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2953{ 4667{
2954 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
2955 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
2956 return; 4670 return;
2957 4671
… …
2968 4682
2969 EV_FREQUENT_CHECK; 4683 EV_FREQUENT_CHECK;
2970} 4684}
2971#endif 4685#endif
2972 4686
4687#if EV_CLEANUP_ENABLE
4688void
4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4690{
4691 if (expect_false (ev_is_active (w)))
4692 return;
4693
4694 EV_FREQUENT_CHECK;
4695
4696 ev_start (EV_A_ (W)w, ++cleanupcnt);
4697 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4698 cleanups [cleanupcnt - 1] = w;
4699
4700 /* cleanup watchers should never keep a refcount on the loop */
4701 ev_unref (EV_A);
4702 EV_FREQUENT_CHECK;
4703}
4704
4705void
4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4707{
4708 clear_pending (EV_A_ (W)w);
4709 if (expect_false (!ev_is_active (w)))
4710 return;
4711
4712 EV_FREQUENT_CHECK;
4713 ev_ref (EV_A);
4714
4715 {
4716 int active = ev_active (w);
4717
4718 cleanups [active - 1] = cleanups [--cleanupcnt];
4719 ev_active (cleanups [active - 1]) = active;
4720 }
4721
4722 ev_stop (EV_A_ (W)w);
4723
4724 EV_FREQUENT_CHECK;
4725}
4726#endif
4727
2973#if EV_ASYNC_ENABLE 4728#if EV_ASYNC_ENABLE
2974void 4729void
2975ev_async_start (EV_P_ ev_async *w) 4730ev_async_start (EV_P_ ev_async *w) EV_THROW
2976{ 4731{
2977 if (expect_false (ev_is_active (w))) 4732 if (expect_false (ev_is_active (w)))
2978 return; 4733 return;
4734
4735 w->sent = 0;
2979 4736
2980 evpipe_init (EV_A); 4737 evpipe_init (EV_A);
2981 4738
2982 EV_FREQUENT_CHECK; 4739 EV_FREQUENT_CHECK;
2983 4740
… …
2987 4744
2988 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
2989} 4746}
2990 4747
2991void 4748void
2992ev_async_stop (EV_P_ ev_async *w) 4749ev_async_stop (EV_P_ ev_async *w) EV_THROW
2993{ 4750{
2994 clear_pending (EV_A_ (W)w); 4751 clear_pending (EV_A_ (W)w);
2995 if (expect_false (!ev_is_active (w))) 4752 if (expect_false (!ev_is_active (w)))
2996 return; 4753 return;
2997 4754
… …
3008 4765
3009 EV_FREQUENT_CHECK; 4766 EV_FREQUENT_CHECK;
3010} 4767}
3011 4768
3012void 4769void
3013ev_async_send (EV_P_ ev_async *w) 4770ev_async_send (EV_P_ ev_async *w) EV_THROW
3014{ 4771{
3015 w->sent = 1; 4772 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 4773 evpipe_write (EV_A_ &async_pending);
3017} 4774}
3018#endif 4775#endif
3019 4776
3020/*****************************************************************************/ 4777/*****************************************************************************/
3021 4778
… …
3055 4812
3056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3057} 4814}
3058 4815
3059void 4816void
3060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3061{ 4818{
3062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3063 4820
3064 if (expect_false (!once)) 4821 if (expect_false (!once))
3065 { 4822 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4823 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 4824 return;
3068 } 4825 }
3069 4826
3070 once->cb = cb; 4827 once->cb = cb;
3071 once->arg = arg; 4828 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 4840 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 4841 ev_timer_start (EV_A_ &once->to);
3085 } 4842 }
3086} 4843}
3087 4844
4845/*****************************************************************************/
4846
4847#if EV_WALK_ENABLE
4848void ecb_cold
4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4850{
4851 int i, j;
4852 ev_watcher_list *wl, *wn;
4853
4854 if (types & (EV_IO | EV_EMBED))
4855 for (i = 0; i < anfdmax; ++i)
4856 for (wl = anfds [i].head; wl; )
4857 {
4858 wn = wl->next;
4859
4860#if EV_EMBED_ENABLE
4861 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4862 {
4863 if (types & EV_EMBED)
4864 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4865 }
4866 else
4867#endif
4868#if EV_USE_INOTIFY
4869 if (ev_cb ((ev_io *)wl) == infy_cb)
4870 ;
4871 else
4872#endif
4873 if ((ev_io *)wl != &pipe_w)
4874 if (types & EV_IO)
4875 cb (EV_A_ EV_IO, wl);
4876
4877 wl = wn;
4878 }
4879
4880 if (types & (EV_TIMER | EV_STAT))
4881 for (i = timercnt + HEAP0; i-- > HEAP0; )
4882#if EV_STAT_ENABLE
4883 /*TODO: timer is not always active*/
4884 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4885 {
4886 if (types & EV_STAT)
4887 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4888 }
4889 else
4890#endif
4891 if (types & EV_TIMER)
4892 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4893
4894#if EV_PERIODIC_ENABLE
4895 if (types & EV_PERIODIC)
4896 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4897 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4898#endif
4899
4900#if EV_IDLE_ENABLE
4901 if (types & EV_IDLE)
4902 for (j = NUMPRI; j--; )
4903 for (i = idlecnt [j]; i--; )
4904 cb (EV_A_ EV_IDLE, idles [j][i]);
4905#endif
4906
4907#if EV_FORK_ENABLE
4908 if (types & EV_FORK)
4909 for (i = forkcnt; i--; )
4910 if (ev_cb (forks [i]) != embed_fork_cb)
4911 cb (EV_A_ EV_FORK, forks [i]);
4912#endif
4913
4914#if EV_ASYNC_ENABLE
4915 if (types & EV_ASYNC)
4916 for (i = asynccnt; i--; )
4917 cb (EV_A_ EV_ASYNC, asyncs [i]);
4918#endif
4919
4920#if EV_PREPARE_ENABLE
4921 if (types & EV_PREPARE)
4922 for (i = preparecnt; i--; )
4923# if EV_EMBED_ENABLE
4924 if (ev_cb (prepares [i]) != embed_prepare_cb)
4925# endif
4926 cb (EV_A_ EV_PREPARE, prepares [i]);
4927#endif
4928
4929#if EV_CHECK_ENABLE
4930 if (types & EV_CHECK)
4931 for (i = checkcnt; i--; )
4932 cb (EV_A_ EV_CHECK, checks [i]);
4933#endif
4934
4935#if EV_SIGNAL_ENABLE
4936 if (types & EV_SIGNAL)
4937 for (i = 0; i < EV_NSIG - 1; ++i)
4938 for (wl = signals [i].head; wl; )
4939 {
4940 wn = wl->next;
4941 cb (EV_A_ EV_SIGNAL, wl);
4942 wl = wn;
4943 }
4944#endif
4945
4946#if EV_CHILD_ENABLE
4947 if (types & EV_CHILD)
4948 for (i = (EV_PID_HASHSIZE); i--; )
4949 for (wl = childs [i]; wl; )
4950 {
4951 wn = wl->next;
4952 cb (EV_A_ EV_CHILD, wl);
4953 wl = wn;
4954 }
4955#endif
4956/* EV_STAT 0x00001000 /* stat data changed */
4957/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4958}
4959#endif
4960
3088#if EV_MULTIPLICITY 4961#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 4962 #include "ev_wrap.h"
3090#endif 4963#endif
3091 4964
3092#ifdef __cplusplus
3093}
3094#endif
3095

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines