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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.450 by root, Mon Oct 8 15:43:35 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# 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
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# 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
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#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
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 360#endif
288 361
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 365# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
297# else 370# else
… …
300# endif 373# endif
301#endif 374#endif
302 375
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
305#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
308#endif 387#endif
309 388
… …
316# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
318#endif 397#endif
319 398
320#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 402# include <sys/select.h>
323# endif 403# endif
324#endif 404#endif
325 405
326#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 407# include <sys/statfs.h>
329# include <sys/inotify.h> 408# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
334# endif 413# endif
335#endif 414#endif
336 415
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 418# include <stdint.h>
344# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
345extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
346# endif 421# endif
347int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 423# ifdef O_CLOEXEC
349} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
350# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
351#endif 452#endif
352 453
353/**/ 454/**/
354 455
355#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 458#else
358# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
359#endif 460#endif
360 461
361/* 462/*
362 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 465 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 468
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010002
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 519 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
378#else 535#else
379# define expect(expr,value) (expr) 536 #include <inttypes.h>
380# define noinline 537 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 538 #define ECB_PTRSIZE 8
382# define inline 539 #else
540 #define ECB_PTRSIZE 4
541 #endif
383# endif 542#endif
543
544/* many compilers define _GNUC_ to some versions but then only implement
545 * what their idiot authors think are the "more important" extensions,
546 * causing enormous grief in return for some better fake benchmark numbers.
547 * or so.
548 * we try to detect these and simply assume they are not gcc - if they have
549 * an issue with that they should have done it right in the first place.
550 */
551#ifndef ECB_GCC_VERSION
552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
553 #define ECB_GCC_VERSION(major,minor) 0
554 #else
555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 556 #endif
557#endif
385 558
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
560#define ECB_C99 (__STDC_VERSION__ >= 199901L)
561#define ECB_C11 (__STDC_VERSION__ >= 201112L)
562#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L)
564
565#if ECB_CPP
566 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END }
569#else
570 #define ECB_EXTERN_C extern
571 #define ECB_EXTERN_C_BEG
572 #define ECB_EXTERN_C_END
573#endif
574
575/*****************************************************************************/
576
577/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
578/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
579
580#if ECB_NO_THREADS
581 #define ECB_NO_SMP 1
582#endif
583
584#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0)
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
590 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
614 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
621 #endif
622 #endif
623#endif
624
625#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
629
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model.
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */
638
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize ()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32
647 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
654 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync ()
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671 #endif
672#endif
673
674#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS
676 /*
677 * if you get undefined symbol references to pthread_mutex_lock,
678 * or failure to find pthread.h, then you should implement
679 * the ECB_MEMORY_FENCE operations for your cpu/compiler
680 * OR provide pthread.h and link against the posix thread library
681 * of your system.
682 */
683 #include <pthread.h>
684 #define ECB_NEEDS_PTHREADS 1
685 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
686
687 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
688 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
689 #endif
690#endif
691
692#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
693 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
694#endif
695
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif
699
700/*****************************************************************************/
701
702#if __cplusplus
703 #define ecb_inline static inline
704#elif ECB_GCC_VERSION(2,5)
705 #define ecb_inline static __inline__
706#elif ECB_C99
707 #define ecb_inline static inline
708#else
709 #define ecb_inline static
710#endif
711
712#if ECB_GCC_VERSION(3,3)
713 #define ecb_restrict __restrict__
714#elif ECB_C99
715 #define ecb_restrict restrict
716#else
717 #define ecb_restrict
718#endif
719
720typedef int ecb_bool;
721
722#define ECB_CONCAT_(a, b) a ## b
723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
726
727#define ecb_function_ ecb_inline
728
729#if ECB_GCC_VERSION(3,1)
730 #define ecb_attribute(attrlist) __attribute__(attrlist)
731 #define ecb_is_constant(expr) __builtin_constant_p (expr)
732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
733 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734#else
735 #define ecb_attribute(attrlist)
736 #define ecb_is_constant(expr) 0
737 #define ecb_expect(expr,value) (expr)
738 #define ecb_prefetch(addr,rw,locality)
739#endif
740
741/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5)
743 #define ecb_decltype(x) __decltype(x)
744#elif ECB_GCC_VERSION(3,0)
745 #define ecb_decltype(x) __typeof(x)
746#endif
747
748#define ecb_noinline ecb_attribute ((__noinline__))
749#define ecb_unused ecb_attribute ((__unused__))
750#define ecb_const ecb_attribute ((__const__))
751#define ecb_pure ecb_attribute ((__pure__))
752
753#if ECB_C11
754 #define ecb_noreturn _Noreturn
755#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif
758
759#if ECB_GCC_VERSION(4,3)
760 #define ecb_artificial ecb_attribute ((__artificial__))
761 #define ecb_hot ecb_attribute ((__hot__))
762 #define ecb_cold ecb_attribute ((__cold__))
763#else
764 #define ecb_artificial
765 #define ecb_hot
766 #define ecb_cold
767#endif
768
769/* put around conditional expressions if you are very sure that the */
770/* expression is mostly true or mostly false. note that these return */
771/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 772#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 773#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
774/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr)
777
778/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4)
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */
787#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
789 ecb_function_ int
790 ecb_ctz32 (uint32_t x)
791 {
792 int r = 0;
793
794 x &= ~x + 1; /* this isolates the lowest bit */
795
796#if ECB_branchless_on_i386
797 r += !!(x & 0xaaaaaaaa) << 0;
798 r += !!(x & 0xcccccccc) << 1;
799 r += !!(x & 0xf0f0f0f0) << 2;
800 r += !!(x & 0xff00ff00) << 3;
801 r += !!(x & 0xffff0000) << 4;
802#else
803 if (x & 0xaaaaaaaa) r += 1;
804 if (x & 0xcccccccc) r += 2;
805 if (x & 0xf0f0f0f0) r += 4;
806 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16;
808#endif
809
810 return r;
811 }
812
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
814 ecb_function_ int
815 ecb_ctz64 (uint64_t x)
816 {
817 int shift = x & 0xffffffffU ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift;
819 }
820
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
822 ecb_function_ int
823 ecb_popcount32 (uint32_t x)
824 {
825 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101;
829
830 return x >> 24;
831 }
832
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
834 ecb_function_ int ecb_ld32 (uint32_t x)
835 {
836 int r = 0;
837
838 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; }
843
844 return r;
845 }
846
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
848 ecb_function_ int ecb_ld64 (uint64_t x)
849 {
850 int r = 0;
851
852 if (x >> 32) { x >>= 32; r += 32; }
853
854 return r + ecb_ld32 (x);
855 }
856#endif
857
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
865{
866 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868}
869
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
872{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8);
877
878 return x;
879}
880
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
883{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
888 x = ( x >> 16 ) | ( x << 16);
889
890 return x;
891}
892
893/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
896ecb_function_ int
897ecb_popcount64 (uint64_t x)
898{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900}
901
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
910
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919
920#if ECB_GCC_VERSION(4,3)
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x)
924#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
926 ecb_function_ uint16_t
927 ecb_bswap16 (uint16_t x)
928 {
929 return ecb_rotl16 (x, 8);
930 }
931
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
933 ecb_function_ uint32_t
934 ecb_bswap32 (uint32_t x)
935 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 }
938
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
940 ecb_function_ uint64_t
941 ecb_bswap64 (uint64_t x)
942 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 }
945#endif
946
947#if ECB_GCC_VERSION(4,5)
948 #define ecb_unreachable() __builtin_unreachable ()
949#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn;
952 ecb_inline void ecb_unreachable (void) { }
953#endif
954
955/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
959ecb_inline unsigned char
960ecb_byteorder_helper (void)
961{
962 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971 return 0x44;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973 return 0x11;
974#else
975 union
976 {
977 uint32_t i;
978 uint8_t c;
979 } u = { 0x11223344 };
980 return u.c;
981#endif
982}
983
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988
989#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif
994
995#if __cplusplus
996 template<typename T>
997 static inline T ecb_div_rd (T val, T div)
998 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 }
1001 template<typename T>
1002 static inline T ecb_div_ru (T val, T div)
1003 {
1004 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1005 }
1006#else
1007 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1008 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1009#endif
1010
1011#if ecb_cplusplus_does_not_suck
1012 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1013 template<typename T, int N>
1014 static inline int ecb_array_length (const T (&arr)[N])
1015 {
1016 return N;
1017 }
1018#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif
1021
1022/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024
1025/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \
1028 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \
1034 || defined __alpha__ \
1035 || defined __hppa__ \
1036 || defined __ia64__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1038 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else
1041 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif
1044
1045#ifndef ECB_NO_LIBM
1046
1047 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1049 ecb_function_ uint32_t
1050 ecb_float_to_binary32 (float x)
1051 {
1052 uint32_t r;
1053
1054 #if ECB_STDFP
1055 memcpy (&r, &x, 4);
1056 #else
1057 /* slow emulation, works for anything but -0 */
1058 uint32_t m;
1059 int e;
1060
1061 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU;
1065
1066 m = frexpf (x, &e) * 0x1000000U;
1067
1068 r = m & 0x80000000U;
1069
1070 if (r)
1071 m = -m;
1072
1073 if (e <= -126)
1074 {
1075 m &= 0xffffffU;
1076 m >>= (-125 - e);
1077 e = -126;
1078 }
1079
1080 r |= (e + 126) << 23;
1081 r |= m & 0x7fffffU;
1082 #endif
1083
1084 return r;
1085 }
1086
1087 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1089 ecb_function_ float
1090 ecb_binary32_to_float (uint32_t x)
1091 {
1092 float r;
1093
1094 #if ECB_STDFP
1095 memcpy (&r, &x, 4);
1096 #else
1097 /* emulation, only works for normals and subnormals and +0 */
1098 int neg = x >> 31;
1099 int e = (x >> 23) & 0xffU;
1100
1101 x &= 0x7fffffU;
1102
1103 if (e)
1104 x |= 0x800000U;
1105 else
1106 e = 1;
1107
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1110
1111 r = neg ? -r : r;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1119 ecb_function_ uint64_t
1120 ecb_double_to_binary64 (double x)
1121 {
1122 uint64_t r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 8);
1126 #else
1127 /* slow emulation, works for anything but -0 */
1128 uint64_t m;
1129 int e;
1130
1131 if (x == 0e0 ) return 0x0000000000000000U;
1132 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1133 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1134 if (x != x ) return 0X7ff7ffffffffffffU;
1135
1136 m = frexp (x, &e) * 0x20000000000000U;
1137
1138 r = m & 0x8000000000000000;;
1139
1140 if (r)
1141 m = -m;
1142
1143 if (e <= -1022)
1144 {
1145 m &= 0x1fffffffffffffU;
1146 m >>= (-1021 - e);
1147 e = -1022;
1148 }
1149
1150 r |= ((uint64_t)(e + 1022)) << 52;
1151 r |= m & 0xfffffffffffffU;
1152 #endif
1153
1154 return r;
1155 }
1156
1157 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1159 ecb_function_ double
1160 ecb_binary64_to_double (uint64_t x)
1161 {
1162 double r;
1163
1164 #if ECB_STDFP
1165 memcpy (&r, &x, 8);
1166 #else
1167 /* emulation, only works for normals and subnormals and +0 */
1168 int neg = x >> 63;
1169 int e = (x >> 52) & 0x7ffU;
1170
1171 x &= 0xfffffffffffffU;
1172
1173 if (e)
1174 x |= 0x10000000000000U;
1175 else
1176 e = 1;
1177
1178 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1179 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1180
1181 r = neg ? -r : r;
1182 #endif
1183
1184 return r;
1185 }
1186
1187#endif
1188
1189#endif
1190
1191/* ECB.H END */
1192
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1197 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences.
1200 */
1201# error "memory fences not defined for your architecture, please report"
1202#endif
1203
1204#ifndef ECB_MEMORY_FENCE
1205# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif
1209
1210#define expect_false(cond) ecb_expect_false (cond)
1211#define expect_true(cond) ecb_expect_true (cond)
1212#define noinline ecb_noinline
1213
388#define inline_size static inline 1214#define inline_size ecb_inline
389 1215
390#if EV_MINIMAL 1216#if EV_FEATURE_CODE
1217# define inline_speed ecb_inline
1218#else
391# define inline_speed static noinline 1219# define inline_speed static noinline
1220#endif
1221
1222#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1223
1224#if EV_MINPRI == EV_MAXPRI
1225# define ABSPRI(w) (((W)w), 0)
392#else 1226#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1227# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1228#endif
398 1229
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1230#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1231#define EMPTY2(a,b) /* used to suppress some warnings */
401 1232
402typedef ev_watcher *W; 1233typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1237#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1238#define ev_at(w) ((WT)(w))->at
408 1239
409#if EV_USE_REALTIME 1240#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1241/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1242/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1243static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1244#endif
414 1245
415#if EV_USE_MONOTONIC 1246#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1247static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1248#endif
418 1249
1250#ifndef EV_FD_TO_WIN32_HANDLE
1251# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1252#endif
1253#ifndef EV_WIN32_HANDLE_TO_FD
1254# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1255#endif
1256#ifndef EV_WIN32_CLOSE_FD
1257# define EV_WIN32_CLOSE_FD(fd) close (fd)
1258#endif
1259
419#ifdef _WIN32 1260#ifdef _WIN32
420# include "ev_win32.c" 1261# include "ev_win32.c"
421#endif 1262#endif
422 1263
423/*****************************************************************************/ 1264/*****************************************************************************/
424 1265
1266/* define a suitable floor function (only used by periodics atm) */
1267
1268#if EV_USE_FLOOR
1269# include <math.h>
1270# define ev_floor(v) floor (v)
1271#else
1272
1273#include <float.h>
1274
1275/* a floor() replacement function, should be independent of ev_tstamp type */
1276static ev_tstamp noinline
1277ev_floor (ev_tstamp v)
1278{
1279 /* the choice of shift factor is not terribly important */
1280#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1281 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1282#else
1283 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1284#endif
1285
1286 /* argument too large for an unsigned long? */
1287 if (expect_false (v >= shift))
1288 {
1289 ev_tstamp f;
1290
1291 if (v == v - 1.)
1292 return v; /* very large number */
1293
1294 f = shift * ev_floor (v * (1. / shift));
1295 return f + ev_floor (v - f);
1296 }
1297
1298 /* special treatment for negative args? */
1299 if (expect_false (v < 0.))
1300 {
1301 ev_tstamp f = -ev_floor (-v);
1302
1303 return f - (f == v ? 0 : 1);
1304 }
1305
1306 /* fits into an unsigned long */
1307 return (unsigned long)v;
1308}
1309
1310#endif
1311
1312/*****************************************************************************/
1313
1314#ifdef __linux
1315# include <sys/utsname.h>
1316#endif
1317
1318static unsigned int noinline ecb_cold
1319ev_linux_version (void)
1320{
1321#ifdef __linux
1322 unsigned int v = 0;
1323 struct utsname buf;
1324 int i;
1325 char *p = buf.release;
1326
1327 if (uname (&buf))
1328 return 0;
1329
1330 for (i = 3+1; --i; )
1331 {
1332 unsigned int c = 0;
1333
1334 for (;;)
1335 {
1336 if (*p >= '0' && *p <= '9')
1337 c = c * 10 + *p++ - '0';
1338 else
1339 {
1340 p += *p == '.';
1341 break;
1342 }
1343 }
1344
1345 v = (v << 8) | c;
1346 }
1347
1348 return v;
1349#else
1350 return 0;
1351#endif
1352}
1353
1354/*****************************************************************************/
1355
1356#if EV_AVOID_STDIO
1357static void noinline ecb_cold
1358ev_printerr (const char *msg)
1359{
1360 write (STDERR_FILENO, msg, strlen (msg));
1361}
1362#endif
1363
425static void (*syserr_cb)(const char *msg); 1364static void (*syserr_cb)(const char *msg) EV_THROW;
426 1365
427void 1366void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1368{
430 syserr_cb = cb; 1369 syserr_cb = cb;
431} 1370}
432 1371
433static void noinline 1372static void noinline ecb_cold
434ev_syserr (const char *msg) 1373ev_syserr (const char *msg)
435{ 1374{
436 if (!msg) 1375 if (!msg)
437 msg = "(libev) system error"; 1376 msg = "(libev) system error";
438 1377
439 if (syserr_cb) 1378 if (syserr_cb)
440 syserr_cb (msg); 1379 syserr_cb (msg);
441 else 1380 else
442 { 1381 {
1382#if EV_AVOID_STDIO
1383 ev_printerr (msg);
1384 ev_printerr (": ");
1385 ev_printerr (strerror (errno));
1386 ev_printerr ("\n");
1387#else
443 perror (msg); 1388 perror (msg);
1389#endif
444 abort (); 1390 abort ();
445 } 1391 }
446} 1392}
447 1393
448static void * 1394static void *
449ev_realloc_emul (void *ptr, long size) 1395ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1396{
451 /* some systems, notably openbsd and darwin, fail to properly 1397 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1398 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1399 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it,
1401 * despite documenting it otherwise.
454 */ 1402 */
455 1403
456 if (size) 1404 if (size)
457 return realloc (ptr, size); 1405 return realloc (ptr, size);
458 1406
459 free (ptr); 1407 free (ptr);
460 return 0; 1408 return 0;
461} 1409}
462 1410
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1412
465void 1413void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1415{
468 alloc = cb; 1416 alloc = cb;
469} 1417}
470 1418
471inline_speed void * 1419inline_speed void *
… …
473{ 1421{
474 ptr = alloc (ptr, size); 1422 ptr = alloc (ptr, size);
475 1423
476 if (!ptr && size) 1424 if (!ptr && size)
477 { 1425 {
1426#if EV_AVOID_STDIO
1427 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1428#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1429 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1430#endif
479 abort (); 1431 abort ();
480 } 1432 }
481 1433
482 return ptr; 1434 return ptr;
483} 1435}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1437#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1438#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1439
488/*****************************************************************************/ 1440/*****************************************************************************/
489 1441
1442/* set in reify when reification needed */
1443#define EV_ANFD_REIFY 1
1444
490/* file descriptor info structure */ 1445/* file descriptor info structure */
491typedef struct 1446typedef struct
492{ 1447{
493 WL head; 1448 WL head;
494 unsigned char events; /* the events watched for */ 1449 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1450 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1451 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1452 unsigned char unused;
498#if EV_USE_EPOLL 1453#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1454 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1455#endif
501#if EV_SELECT_IS_WINSOCKET 1456#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1457 SOCKET handle;
1458#endif
1459#if EV_USE_IOCP
1460 OVERLAPPED or, ow;
503#endif 1461#endif
504} ANFD; 1462} ANFD;
505 1463
506/* stores the pending event set for a given watcher */ 1464/* stores the pending event set for a given watcher */
507typedef struct 1465typedef struct
… …
549 #undef VAR 1507 #undef VAR
550 }; 1508 };
551 #include "ev_wrap.h" 1509 #include "ev_wrap.h"
552 1510
553 static struct ev_loop default_loop_struct; 1511 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1513
556#else 1514#else
557 1515
558 ev_tstamp ev_rt_now; 1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1517 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1518 #include "ev_vars.h"
561 #undef VAR 1519 #undef VAR
562 1520
563 static int ev_default_loop_ptr; 1521 static int ev_default_loop_ptr;
564 1522
565#endif 1523#endif
566 1524
1525#if EV_FEATURE_API
1526# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1527# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1528# define EV_INVOKE_PENDING invoke_cb (EV_A)
1529#else
1530# define EV_RELEASE_CB (void)0
1531# define EV_ACQUIRE_CB (void)0
1532# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1533#endif
1534
1535#define EVBREAK_RECURSE 0x80
1536
567/*****************************************************************************/ 1537/*****************************************************************************/
568 1538
569#ifndef EV_HAVE_EV_TIME 1539#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1540ev_tstamp
571ev_time (void) 1541ev_time (void) EV_THROW
572{ 1542{
573#if EV_USE_REALTIME 1543#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1544 if (expect_true (have_realtime))
575 { 1545 {
576 struct timespec ts; 1546 struct timespec ts;
… …
600 return ev_time (); 1570 return ev_time ();
601} 1571}
602 1572
603#if EV_MULTIPLICITY 1573#if EV_MULTIPLICITY
604ev_tstamp 1574ev_tstamp
605ev_now (EV_P) 1575ev_now (EV_P) EV_THROW
606{ 1576{
607 return ev_rt_now; 1577 return ev_rt_now;
608} 1578}
609#endif 1579#endif
610 1580
611void 1581void
612ev_sleep (ev_tstamp delay) 1582ev_sleep (ev_tstamp delay) EV_THROW
613{ 1583{
614 if (delay > 0.) 1584 if (delay > 0.)
615 { 1585 {
616#if EV_USE_NANOSLEEP 1586#if EV_USE_NANOSLEEP
617 struct timespec ts; 1587 struct timespec ts;
618 1588
619 ts.tv_sec = (time_t)delay; 1589 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1590 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1591#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1592 Sleep ((unsigned long)(delay * 1e3));
625#else 1593#else
626 struct timeval tv; 1594 struct timeval tv;
627 1595
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1597 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1598 /* by older ones */
1599 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1600 select (0, 0, 0, 0, &tv);
635#endif 1601#endif
636 } 1602 }
637} 1603}
638 1604
639/*****************************************************************************/ 1605/*****************************************************************************/
640 1606
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1607#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 1608
643/* find a suitable new size for the given array, */ 1609/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1610/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1611inline_size int
646array_nextsize (int elem, int cur, int cnt) 1612array_nextsize (int elem, int cur, int cnt)
647{ 1613{
648 int ncur = cur + 1; 1614 int ncur = cur + 1;
649 1615
650 do 1616 do
651 ncur <<= 1; 1617 ncur <<= 1;
652 while (cnt > ncur); 1618 while (cnt > ncur);
653 1619
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1620 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1621 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1622 {
657 ncur *= elem; 1623 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1624 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 1625 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1627 }
662 1628
663 return ncur; 1629 return ncur;
664} 1630}
665 1631
666static noinline void * 1632static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1633array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1634{
669 *cur = array_nextsize (elem, *cur, cnt); 1635 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1636 return ev_realloc (base, elem * *cur);
671} 1637}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1640 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1641
676#define array_needsize(type,base,cur,cnt,init) \ 1642#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1643 if (expect_false ((cnt) > (cur))) \
678 { \ 1644 { \
679 int ocur_ = (cur); \ 1645 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1646 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1647 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1648 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1649 }
684 1650
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1668pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1669{
704} 1670}
705 1671
706void noinline 1672void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1674{
709 W w_ = (W)w; 1675 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1676 int pri = ABSPRI (w_);
711 1677
712 if (expect_false (w_->pending)) 1678 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1682 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1684 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1685 pendings [pri][w_->pending - 1].events = revents;
720 } 1686 }
1687
1688 pendingpri = NUMPRI - 1;
721} 1689}
722 1690
723inline_speed void 1691inline_speed void
724feed_reverse (EV_P_ W w) 1692feed_reverse (EV_P_ W w)
725{ 1693{
… …
745} 1713}
746 1714
747/*****************************************************************************/ 1715/*****************************************************************************/
748 1716
749inline_speed void 1717inline_speed void
750fd_event (EV_P_ int fd, int revents) 1718fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1719{
752 ANFD *anfd = anfds + fd; 1720 ANFD *anfd = anfds + fd;
753 ev_io *w; 1721 ev_io *w;
754 1722
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1723 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 1727 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1728 ev_feed_event (EV_A_ (W)w, ev);
761 } 1729 }
762} 1730}
763 1731
1732/* do not submit kernel events for fds that have reify set */
1733/* because that means they changed while we were polling for new events */
1734inline_speed void
1735fd_event (EV_P_ int fd, int revents)
1736{
1737 ANFD *anfd = anfds + fd;
1738
1739 if (expect_true (!anfd->reify))
1740 fd_event_nocheck (EV_A_ fd, revents);
1741}
1742
764void 1743void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1745{
767 if (fd >= 0 && fd < anfdmax) 1746 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1747 fd_event_nocheck (EV_A_ fd, revents);
769} 1748}
770 1749
771/* make sure the external fd watch events are in-sync */ 1750/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1751/* with the kernel/libev internal state */
773inline_size void 1752inline_size void
774fd_reify (EV_P) 1753fd_reify (EV_P)
775{ 1754{
776 int i; 1755 int i;
777 1756
1757#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1758 for (i = 0; i < fdchangecnt; ++i)
1759 {
1760 int fd = fdchanges [i];
1761 ANFD *anfd = anfds + fd;
1762
1763 if (anfd->reify & EV__IOFDSET && anfd->head)
1764 {
1765 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1766
1767 if (handle != anfd->handle)
1768 {
1769 unsigned long arg;
1770
1771 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1772
1773 /* handle changed, but fd didn't - we need to do it in two steps */
1774 backend_modify (EV_A_ fd, anfd->events, 0);
1775 anfd->events = 0;
1776 anfd->handle = handle;
1777 }
1778 }
1779 }
1780#endif
1781
778 for (i = 0; i < fdchangecnt; ++i) 1782 for (i = 0; i < fdchangecnt; ++i)
779 { 1783 {
780 int fd = fdchanges [i]; 1784 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1785 ANFD *anfd = anfds + fd;
782 ev_io *w; 1786 ev_io *w;
783 1787
784 unsigned char events = 0; 1788 unsigned char o_events = anfd->events;
1789 unsigned char o_reify = anfd->reify;
785 1790
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1791 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1792
789#if EV_SELECT_IS_WINSOCKET 1793 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1794 {
792 unsigned long arg; 1795 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1796
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1797 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1798 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1799
797 #endif 1800 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1801 o_reify = EV__IOFDSET; /* actually |= */
799 } 1802 }
800#endif
801 1803
802 { 1804 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1805 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1806 }
813 1807
814 fdchangecnt = 0; 1808 fdchangecnt = 0;
815} 1809}
816 1810
… …
828 fdchanges [fdchangecnt - 1] = fd; 1822 fdchanges [fdchangecnt - 1] = fd;
829 } 1823 }
830} 1824}
831 1825
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1826/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 1827inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1828fd_kill (EV_P_ int fd)
835{ 1829{
836 ev_io *w; 1830 ev_io *w;
837 1831
838 while ((w = (ev_io *)anfds [fd].head)) 1832 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1834 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1835 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1836 }
843} 1837}
844 1838
845/* check whether the given fd is atcually valid, for error recovery */ 1839/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1840inline_size int ecb_cold
847fd_valid (int fd) 1841fd_valid (int fd)
848{ 1842{
849#ifdef _WIN32 1843#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1844 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1845#else
852 return fcntl (fd, F_GETFD) != -1; 1846 return fcntl (fd, F_GETFD) != -1;
853#endif 1847#endif
854} 1848}
855 1849
856/* called on EBADF to verify fds */ 1850/* called on EBADF to verify fds */
857static void noinline 1851static void noinline ecb_cold
858fd_ebadf (EV_P) 1852fd_ebadf (EV_P)
859{ 1853{
860 int fd; 1854 int fd;
861 1855
862 for (fd = 0; fd < anfdmax; ++fd) 1856 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1858 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1859 fd_kill (EV_A_ fd);
866} 1860}
867 1861
868/* called on ENOMEM in select/poll to kill some fds and retry */ 1862/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 1863static void noinline ecb_cold
870fd_enomem (EV_P) 1864fd_enomem (EV_P)
871{ 1865{
872 int fd; 1866 int fd;
873 1867
874 for (fd = anfdmax; fd--; ) 1868 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1869 if (anfds [fd].events)
876 { 1870 {
877 fd_kill (EV_A_ fd); 1871 fd_kill (EV_A_ fd);
878 return; 1872 break;
879 } 1873 }
880} 1874}
881 1875
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1876/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1877static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1882 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1883 if (anfds [fd].events)
890 { 1884 {
891 anfds [fd].events = 0; 1885 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1886 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1887 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1888 }
895} 1889}
896 1890
1891/* used to prepare libev internal fd's */
1892/* this is not fork-safe */
1893inline_speed void
1894fd_intern (int fd)
1895{
1896#ifdef _WIN32
1897 unsigned long arg = 1;
1898 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1899#else
1900 fcntl (fd, F_SETFD, FD_CLOEXEC);
1901 fcntl (fd, F_SETFL, O_NONBLOCK);
1902#endif
1903}
1904
897/*****************************************************************************/ 1905/*****************************************************************************/
898 1906
899/* 1907/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1908 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1909 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1910 * the branching factor of the d-tree.
903 */ 1911 */
904 1912
905/* 1913/*
… …
973 1981
974 for (;;) 1982 for (;;)
975 { 1983 {
976 int c = k << 1; 1984 int c = k << 1;
977 1985
978 if (c > N + HEAP0 - 1) 1986 if (c >= N + HEAP0)
979 break; 1987 break;
980 1988
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1989 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1990 ? 1 : 0;
983 1991
… …
1019 2027
1020/* move an element suitably so it is in a correct place */ 2028/* move an element suitably so it is in a correct place */
1021inline_size void 2029inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2030adjustheap (ANHE *heap, int N, int k)
1023{ 2031{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2032 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 2033 upheap (heap, k);
1026 else 2034 else
1027 downheap (heap, N, k); 2035 downheap (heap, N, k);
1028} 2036}
1029 2037
… …
1042/*****************************************************************************/ 2050/*****************************************************************************/
1043 2051
1044/* associate signal watchers to a signal signal */ 2052/* associate signal watchers to a signal signal */
1045typedef struct 2053typedef struct
1046{ 2054{
2055 EV_ATOMIC_T pending;
2056#if EV_MULTIPLICITY
2057 EV_P;
2058#endif
1047 WL head; 2059 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2060} ANSIG;
1050 2061
1051static ANSIG *signals; 2062static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2063
1056/*****************************************************************************/ 2064/*****************************************************************************/
1057 2065
1058/* used to prepare libev internal fd's */ 2066#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */ 2067
2068static void noinline ecb_cold
2069evpipe_init (EV_P)
2070{
2071 if (!ev_is_active (&pipe_w))
2072 {
2073 int fds [2];
2074
2075# if EV_USE_EVENTFD
2076 fds [0] = -1;
2077 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2078 if (fds [1] < 0 && errno == EINVAL)
2079 fds [1] = eventfd (0, 0);
2080
2081 if (fds [1] < 0)
2082# endif
2083 {
2084 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe");
2086
2087 fd_intern (fds [0]);
2088 }
2089
2090 fd_intern (fds [1]);
2091
2092 evpipe [0] = fds [0];
2093
2094 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */
2096 else
2097 {
2098 /* on subsequent calls, do not change evpipe [1] */
2099 /* so that evpipe_write can always rely on its value. */
2100 /* this branch does not do anything sensible on windows, */
2101 /* so must not be executed on windows */
2102
2103 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]);
2105 }
2106
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 }
2111}
2112
1060inline_speed void 2113inline_speed void
1061fd_intern (int fd) 2114evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2115{
1063#ifdef _WIN32 2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2117
1072static void noinline 2118 if (expect_true (*flag))
1073evpipe_init (EV_P) 2119 return;
1074{ 2120
1075 if (!ev_is_active (&pipe_w)) 2121 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123
2124 pipe_write_skipped = 1;
2125
2126 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2127
2128 if (pipe_write_wanted)
1076 { 2129 {
2130 int old_errno;
2131
2132 pipe_write_skipped = 0;
2133 ECB_MEMORY_FENCE_RELEASE;
2134
2135 old_errno = errno; /* save errno because write will clobber it */
2136
1077#if EV_USE_EVENTFD 2137#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2138 if (evpipe [0] < 0)
1079 { 2139 {
1080 evpipe [0] = -1; 2140 uint64_t counter = 1;
1081 fd_intern (evfd); 2141 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2142 }
1084 else 2143 else
1085#endif 2144#endif
1086 { 2145 {
1087 while (pipe (evpipe)) 2146#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2147 WSABUF buf;
1089 2148 DWORD sent;
1090 fd_intern (evpipe [0]); 2149 buf.buf = &buf;
1091 fd_intern (evpipe [1]); 2150 buf.len = 1;
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2152#else
2153 write (evpipe [1], &(evpipe [1]), 1);
2154#endif
1093 } 2155 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2156
1119 errno = old_errno; 2157 errno = old_errno;
1120 } 2158 }
1121} 2159}
1122 2160
1123/* called whenever the libev signal pipe */ 2161/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2162/* got some events (signal, async) */
1125static void 2163static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2164pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2165{
2166 int i;
2167
2168 if (revents & EV_READ)
2169 {
1128#if EV_USE_EVENTFD 2170#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2171 if (evpipe [0] < 0)
1130 { 2172 {
1131 uint64_t counter; 2173 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2174 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2175 }
1134 else 2176 else
1135#endif 2177#endif
1136 { 2178 {
1137 char dummy; 2179 char dummy[4];
2180#ifdef _WIN32
2181 WSABUF buf;
2182 DWORD recvd;
2183 DWORD flags = 0;
2184 buf.buf = dummy;
2185 buf.len = sizeof (dummy);
2186 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2187#else
1138 read (evpipe [0], &dummy, 1); 2188 read (evpipe [0], &dummy, sizeof (dummy));
2189#endif
2190 }
2191 }
2192
2193 pipe_write_skipped = 0;
2194
2195 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2196
2197#if EV_SIGNAL_ENABLE
2198 if (sig_pending)
1139 } 2199 {
2200 sig_pending = 0;
1140 2201
1141 if (gotsig && ev_is_default_loop (EV_A)) 2202 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2203
1146 for (signum = signalmax; signum--; ) 2204 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2205 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2206 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2207 }
2208#endif
1150 2209
1151#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1152 if (gotasync) 2211 if (async_pending)
1153 { 2212 {
1154 int i; 2213 async_pending = 0;
1155 gotasync = 0; 2214
2215 ECB_MEMORY_FENCE;
1156 2216
1157 for (i = asynccnt; i--; ) 2217 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2218 if (asyncs [i]->sent)
1159 { 2219 {
1160 asyncs [i]->sent = 0; 2220 asyncs [i]->sent = 0;
2221 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2223 }
1163 } 2224 }
1164#endif 2225#endif
1165} 2226}
1166 2227
1167/*****************************************************************************/ 2228/*****************************************************************************/
1168 2229
2230void
2231ev_feed_signal (int signum) EV_THROW
2232{
2233#if EV_MULTIPLICITY
2234 ECB_MEMORY_FENCE_ACQUIRE;
2235 EV_P = signals [signum - 1].loop;
2236
2237 if (!EV_A)
2238 return;
2239#endif
2240
2241 signals [signum - 1].pending = 1;
2242 evpipe_write (EV_A_ &sig_pending);
2243}
2244
1169static void 2245static void
1170ev_sighandler (int signum) 2246ev_sighandler (int signum)
1171{ 2247{
2248#ifdef _WIN32
2249 signal (signum, ev_sighandler);
2250#endif
2251
2252 ev_feed_signal (signum);
2253}
2254
2255void noinline
2256ev_feed_signal_event (EV_P_ int signum) EV_THROW
2257{
2258 WL w;
2259
2260 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2261 return;
2262
2263 --signum;
2264
1172#if EV_MULTIPLICITY 2265#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2266 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2267 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2268
1176#if _WIN32 2269 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2270 return;
2271#endif
1197 2272
1198 signals [signum].gotsig = 0; 2273 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE;
1199 2275
1200 for (w = signals [signum].head; w; w = w->next) 2276 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2277 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2278}
1203 2279
2280#if EV_USE_SIGNALFD
2281static void
2282sigfdcb (EV_P_ ev_io *iow, int revents)
2283{
2284 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2285
2286 for (;;)
2287 {
2288 ssize_t res = read (sigfd, si, sizeof (si));
2289
2290 /* not ISO-C, as res might be -1, but works with SuS */
2291 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2292 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2293
2294 if (res < (ssize_t)sizeof (si))
2295 break;
2296 }
2297}
2298#endif
2299
2300#endif
2301
1204/*****************************************************************************/ 2302/*****************************************************************************/
1205 2303
2304#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2305static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2306
1210static ev_signal childev; 2307static ev_signal childev;
1211 2308
1212#ifndef WIFCONTINUED 2309#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2310# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2315child_reap (EV_P_ int chain, int pid, int status)
1219{ 2316{
1220 ev_child *w; 2317 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2318 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2319
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2320 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2321 {
1225 if ((w->pid == pid || !w->pid) 2322 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2323 && (!traced || (w->flags & 1)))
1227 { 2324 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2325 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 2350 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 2351 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2352 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2353
1257 child_reap (EV_A_ pid, pid, status); 2354 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2355 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2356 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2357}
1261 2358
1262#endif 2359#endif
1263 2360
1264/*****************************************************************************/ 2361/*****************************************************************************/
1265 2362
2363#if EV_USE_IOCP
2364# include "ev_iocp.c"
2365#endif
1266#if EV_USE_PORT 2366#if EV_USE_PORT
1267# include "ev_port.c" 2367# include "ev_port.c"
1268#endif 2368#endif
1269#if EV_USE_KQUEUE 2369#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2370# include "ev_kqueue.c"
… …
1277#endif 2377#endif
1278#if EV_USE_SELECT 2378#if EV_USE_SELECT
1279# include "ev_select.c" 2379# include "ev_select.c"
1280#endif 2380#endif
1281 2381
1282int 2382int ecb_cold
1283ev_version_major (void) 2383ev_version_major (void) EV_THROW
1284{ 2384{
1285 return EV_VERSION_MAJOR; 2385 return EV_VERSION_MAJOR;
1286} 2386}
1287 2387
1288int 2388int ecb_cold
1289ev_version_minor (void) 2389ev_version_minor (void) EV_THROW
1290{ 2390{
1291 return EV_VERSION_MINOR; 2391 return EV_VERSION_MINOR;
1292} 2392}
1293 2393
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2394/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2395int inline_size ecb_cold
1296enable_secure (void) 2396enable_secure (void)
1297{ 2397{
1298#ifdef _WIN32 2398#ifdef _WIN32
1299 return 0; 2399 return 0;
1300#else 2400#else
1301 return getuid () != geteuid () 2401 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2402 || getgid () != getegid ();
1303#endif 2403#endif
1304} 2404}
1305 2405
1306unsigned int 2406unsigned int ecb_cold
1307ev_supported_backends (void) 2407ev_supported_backends (void) EV_THROW
1308{ 2408{
1309 unsigned int flags = 0; 2409 unsigned int flags = 0;
1310 2410
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2415 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2416
1317 return flags; 2417 return flags;
1318} 2418}
1319 2419
1320unsigned int 2420unsigned int ecb_cold
1321ev_recommended_backends (void) 2421ev_recommended_backends (void) EV_THROW
1322{ 2422{
1323 unsigned int flags = ev_supported_backends (); 2423 unsigned int flags = ev_supported_backends ();
1324 2424
1325#ifndef __NetBSD__ 2425#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2426 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2430#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2431 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2432 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2433 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2434#endif
2435#ifdef __FreeBSD__
2436 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2437#endif
1335 2438
1336 return flags; 2439 return flags;
1337} 2440}
1338 2441
2442unsigned int ecb_cold
2443ev_embeddable_backends (void) EV_THROW
2444{
2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2446
2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2449 flags &= ~EVBACKEND_EPOLL;
2450
2451 return flags;
2452}
2453
1339unsigned int 2454unsigned int
1340ev_embeddable_backends (void) 2455ev_backend (EV_P) EV_THROW
1341{ 2456{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2457 return backend;
1343
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
1349} 2458}
1350 2459
2460#if EV_FEATURE_API
1351unsigned int 2461unsigned int
1352ev_backend (EV_P) 2462ev_iteration (EV_P) EV_THROW
1353{ 2463{
1354 return backend; 2464 return loop_count;
1355} 2465}
1356 2466
1357unsigned int 2467unsigned int
1358ev_loop_count (EV_P) 2468ev_depth (EV_P) EV_THROW
1359{ 2469{
1360 return loop_count; 2470 return loop_depth;
1361} 2471}
1362 2472
1363void 2473void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1365{ 2475{
1366 io_blocktime = interval; 2476 io_blocktime = interval;
1367} 2477}
1368 2478
1369void 2479void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2481{
1372 timeout_blocktime = interval; 2482 timeout_blocktime = interval;
1373} 2483}
1374 2484
2485void
2486ev_set_userdata (EV_P_ void *data) EV_THROW
2487{
2488 userdata = data;
2489}
2490
2491void *
2492ev_userdata (EV_P) EV_THROW
2493{
2494 return userdata;
2495}
2496
2497void
2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2499{
2500 invoke_cb = invoke_pending_cb;
2501}
2502
2503void
2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2505{
2506 release_cb = release;
2507 acquire_cb = acquire;
2508}
2509#endif
2510
1375/* initialise a loop structure, must be zero-initialised */ 2511/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2512static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 2513loop_init (EV_P_ unsigned int flags) EV_THROW
1378{ 2514{
1379 if (!backend) 2515 if (!backend)
1380 { 2516 {
2517 origflags = flags;
2518
1381#if EV_USE_REALTIME 2519#if EV_USE_REALTIME
1382 if (!have_realtime) 2520 if (!have_realtime)
1383 { 2521 {
1384 struct timespec ts; 2522 struct timespec ts;
1385 2523
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2534 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2535 have_monotonic = 1;
1398 } 2536 }
1399#endif 2537#endif
1400 2538
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2539 /* pid check not overridable via env */
1416#ifndef _WIN32 2540#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2541 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2542 curpid = getpid ();
1419#endif 2543#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2545 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2546 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2547 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2548 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2549
1426 if (!(flags & 0x0000ffffU)) 2550 ev_rt_now = ev_time ();
2551 mn_now = get_clock ();
2552 now_floor = mn_now;
2553 rtmn_diff = ev_rt_now - mn_now;
2554#if EV_FEATURE_API
2555 invoke_cb = ev_invoke_pending;
2556#endif
2557
2558 io_blocktime = 0.;
2559 timeout_blocktime = 0.;
2560 backend = 0;
2561 backend_fd = -1;
2562 sig_pending = 0;
2563#if EV_ASYNC_ENABLE
2564 async_pending = 0;
2565#endif
2566 pipe_write_skipped = 0;
2567 pipe_write_wanted = 0;
2568 evpipe [0] = -1;
2569 evpipe [1] = -1;
2570#if EV_USE_INOTIFY
2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2572#endif
2573#if EV_USE_SIGNALFD
2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2575#endif
2576
2577 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 2578 flags |= ev_recommended_backends ();
1428 2579
2580#if EV_USE_IOCP
2581 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2582#endif
1429#if EV_USE_PORT 2583#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2584 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2585#endif
1432#if EV_USE_KQUEUE 2586#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2587 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2596 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2597#endif
1444 2598
1445 ev_prepare_init (&pending_w, pendingcb); 2599 ev_prepare_init (&pending_w, pendingcb);
1446 2600
2601#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2602 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2603 ev_set_priority (&pipe_w, EV_MAXPRI);
2604#endif
1449 } 2605 }
1450} 2606}
1451 2607
1452/* free up a loop structure */ 2608/* free up a loop structure */
1453static void noinline 2609void ecb_cold
1454loop_destroy (EV_P) 2610ev_loop_destroy (EV_P)
1455{ 2611{
1456 int i; 2612 int i;
1457 2613
2614#if EV_MULTIPLICITY
2615 /* mimic free (0) */
2616 if (!EV_A)
2617 return;
2618#endif
2619
2620#if EV_CLEANUP_ENABLE
2621 /* queue cleanup watchers (and execute them) */
2622 if (expect_false (cleanupcnt))
2623 {
2624 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2625 EV_INVOKE_PENDING;
2626 }
2627#endif
2628
2629#if EV_CHILD_ENABLE
2630 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2631 {
2632 ev_ref (EV_A); /* child watcher */
2633 ev_signal_stop (EV_A_ &childev);
2634 }
2635#endif
2636
1458 if (ev_is_active (&pipe_w)) 2637 if (ev_is_active (&pipe_w))
1459 { 2638 {
1460 ev_ref (EV_A); /* signal watcher */ 2639 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2640 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 2641
2642 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2643 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2644 }
2645
1463#if EV_USE_EVENTFD 2646#if EV_USE_SIGNALFD
1464 if (evfd >= 0) 2647 if (ev_is_active (&sigfd_w))
1465 close (evfd); 2648 close (sigfd);
1466#endif 2649#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 2650
1475#if EV_USE_INOTIFY 2651#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2652 if (fs_fd >= 0)
1477 close (fs_fd); 2653 close (fs_fd);
1478#endif 2654#endif
1479 2655
1480 if (backend_fd >= 0) 2656 if (backend_fd >= 0)
1481 close (backend_fd); 2657 close (backend_fd);
1482 2658
2659#if EV_USE_IOCP
2660 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2661#endif
1483#if EV_USE_PORT 2662#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2663 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2664#endif
1486#if EV_USE_KQUEUE 2665#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2666 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2681#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2682 array_free (idle, [i]);
1504#endif 2683#endif
1505 } 2684 }
1506 2685
1507 ev_free (anfds); anfdmax = 0; 2686 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2687
1509 /* have to use the microsoft-never-gets-it-right macro */ 2688 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2689 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2690 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2691 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2693 array_free (periodic, EMPTY);
1515#endif 2694#endif
1516#if EV_FORK_ENABLE 2695#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2696 array_free (fork, EMPTY);
1518#endif 2697#endif
2698#if EV_CLEANUP_ENABLE
2699 array_free (cleanup, EMPTY);
2700#endif
1519 array_free (prepare, EMPTY); 2701 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2702 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2703#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2704 array_free (async, EMPTY);
1523#endif 2705#endif
1524 2706
1525 backend = 0; 2707 backend = 0;
2708
2709#if EV_MULTIPLICITY
2710 if (ev_is_default_loop (EV_A))
2711#endif
2712 ev_default_loop_ptr = 0;
2713#if EV_MULTIPLICITY
2714 else
2715 ev_free (EV_A);
2716#endif
1526} 2717}
1527 2718
1528#if EV_USE_INOTIFY 2719#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2720inline_size void infy_fork (EV_P);
1530#endif 2721#endif
… …
1543#endif 2734#endif
1544#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 2736 infy_fork (EV_A);
1546#endif 2737#endif
1547 2738
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 2740 if (ev_is_active (&pipe_w))
1549 { 2741 {
1550 /* this "locks" the handlers against writing to the pipe */ 2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2743
1557 ev_ref (EV_A); 2744 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2745 ev_io_stop (EV_A_ &pipe_w);
1559 2746
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 2747 if (evpipe [0] >= 0)
1566 { 2748 EV_WIN32_CLOSE_FD (evpipe [0]);
1567 close (evpipe [0]);
1568 close (evpipe [1]);
1569 }
1570 2749
1571 evpipe_init (EV_A); 2750 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2751 /* iterate over everything, in case we missed something before */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1574 } 2753 }
2754#endif
1575 2755
1576 postfork = 0; 2756 postfork = 0;
1577} 2757}
1578 2758
1579#if EV_MULTIPLICITY 2759#if EV_MULTIPLICITY
1580 2760
1581struct ev_loop * 2761struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2762ev_loop_new (unsigned int flags) EV_THROW
1583{ 2763{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 2765
1586 memset (loop, 0, sizeof (struct ev_loop)); 2766 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2767 loop_init (EV_A_ flags);
1589 2768
1590 if (ev_backend (EV_A)) 2769 if (ev_backend (EV_A))
1591 return loop; 2770 return EV_A;
1592 2771
2772 ev_free (EV_A);
1593 return 0; 2773 return 0;
1594} 2774}
1595 2775
1596void 2776#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2777
1609#if EV_VERIFY 2778#if EV_VERIFY
1610static void noinline 2779static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2780verify_watcher (EV_P_ W w)
1612{ 2781{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2782 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 2783
1615 if (w->pending) 2784 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2785 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 2786}
1618 2787
1619static void noinline 2788static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2789verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2790{
1622 int i; 2791 int i;
1623 2792
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2793 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2798
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2799 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2800 }
1632} 2801}
1633 2802
1634static void noinline 2803static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2804array_verify (EV_P_ W *ws, int cnt)
1636{ 2805{
1637 while (cnt--) 2806 while (cnt--)
1638 { 2807 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2808 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2809 verify_watcher (EV_A_ ws [cnt]);
1641 } 2810 }
1642} 2811}
1643#endif 2812#endif
1644 2813
1645void 2814#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 2815void ecb_cold
2816ev_verify (EV_P) EV_THROW
1647{ 2817{
1648#if EV_VERIFY 2818#if EV_VERIFY
1649 int i; 2819 int i;
1650 WL w; 2820 WL w, w2;
1651 2821
1652 assert (activecnt >= -1); 2822 assert (activecnt >= -1);
1653 2823
1654 assert (fdchangemax >= fdchangecnt); 2824 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 2825 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2826 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 2827
1658 assert (anfdmax >= 0); 2828 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 2829 for (i = 0; i < anfdmax; ++i)
2830 {
2831 int j = 0;
2832
1660 for (w = anfds [i].head; w; w = w->next) 2833 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 2834 {
1662 verify_watcher (EV_A_ (W)w); 2835 verify_watcher (EV_A_ (W)w);
2836
2837 if (j++ & 1)
2838 {
2839 assert (("libev: io watcher list contains a loop", w != w2));
2840 w2 = w2->next;
2841 }
2842
1663 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2843 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1664 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2844 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1665 } 2845 }
2846 }
1666 2847
1667 assert (timermax >= timercnt); 2848 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 2849 verify_heap (EV_A_ timers, timercnt);
1669 2850
1670#if EV_PERIODIC_ENABLE 2851#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 2866#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2867 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2868 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2869#endif
1689 2870
2871#if EV_CLEANUP_ENABLE
2872 assert (cleanupmax >= cleanupcnt);
2873 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2874#endif
2875
1690#if EV_ASYNC_ENABLE 2876#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2877 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2878 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2879#endif
1694 2880
2881#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2882 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2883 array_verify (EV_A_ (W *)prepares, preparecnt);
2884#endif
1697 2885
2886#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2887 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2888 array_verify (EV_A_ (W *)checks, checkcnt);
2889#endif
1700 2890
1701# if 0 2891# if 0
2892#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2893 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2894 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2895#endif
1704# endif 2896# endif
1705#endif 2897#endif
1706} 2898}
1707 2899#endif
1708#endif /* multiplicity */
1709 2900
1710#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
1711struct ev_loop * 2902struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 2903#else
1714int 2904int
2905#endif
1715ev_default_loop (unsigned int flags) 2906ev_default_loop (unsigned int flags) EV_THROW
1716#endif
1717{ 2907{
1718 if (!ev_default_loop_ptr) 2908 if (!ev_default_loop_ptr)
1719 { 2909 {
1720#if EV_MULTIPLICITY 2910#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2911 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2912#else
1723 ev_default_loop_ptr = 1; 2913 ev_default_loop_ptr = 1;
1724#endif 2914#endif
1725 2915
1726 loop_init (EV_A_ flags); 2916 loop_init (EV_A_ flags);
1727 2917
1728 if (ev_backend (EV_A)) 2918 if (ev_backend (EV_A))
1729 { 2919 {
1730#ifndef _WIN32 2920#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2921 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2922 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2923 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2924 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2925#endif
… …
1740 2930
1741 return ev_default_loop_ptr; 2931 return ev_default_loop_ptr;
1742} 2932}
1743 2933
1744void 2934void
1745ev_default_destroy (void) 2935ev_loop_fork (EV_P) EV_THROW
1746{ 2936{
1747#if EV_MULTIPLICITY 2937 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 2938}
1770 2939
1771/*****************************************************************************/ 2940/*****************************************************************************/
1772 2941
1773void 2942void
1774ev_invoke (EV_P_ void *w, int revents) 2943ev_invoke (EV_P_ void *w, int revents)
1775{ 2944{
1776 EV_CB_INVOKE ((W)w, revents); 2945 EV_CB_INVOKE ((W)w, revents);
1777} 2946}
1778 2947
1779inline_speed void 2948unsigned int
1780call_pending (EV_P) 2949ev_pending_count (EV_P) EV_THROW
1781{ 2950{
1782 int pri; 2951 int pri;
2952 unsigned int count = 0;
1783 2953
1784 for (pri = NUMPRI; pri--; ) 2954 for (pri = NUMPRI; pri--; )
2955 count += pendingcnt [pri];
2956
2957 return count;
2958}
2959
2960void noinline
2961ev_invoke_pending (EV_P)
2962{
2963 pendingpri = NUMPRI;
2964
2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2966 {
2967 --pendingpri;
2968
1785 while (pendingcnt [pri]) 2969 while (pendingcnt [pendingpri])
1786 { 2970 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 2972
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 2973 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 2974 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 2975 EV_FREQUENT_CHECK;
1795 } 2976 }
2977 }
1796} 2978}
1797 2979
1798#if EV_IDLE_ENABLE 2980#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 2981/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 2982/* only when higher priorities are idle" logic */
… …
1852 EV_FREQUENT_CHECK; 3034 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3035 feed_reverse (EV_A_ (W)w);
1854 } 3036 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3037 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3038
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3039 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3040 }
1859} 3041}
1860 3042
1861#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
3044
3045static void noinline
3046periodic_recalc (EV_P_ ev_periodic *w)
3047{
3048 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3049 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3050
3051 /* the above almost always errs on the low side */
3052 while (at <= ev_rt_now)
3053 {
3054 ev_tstamp nat = at + w->interval;
3055
3056 /* when resolution fails us, we use ev_rt_now */
3057 if (expect_false (nat == at))
3058 {
3059 at = ev_rt_now;
3060 break;
3061 }
3062
3063 at = nat;
3064 }
3065
3066 ev_at (w) = at;
3067}
3068
1862/* make periodics pending */ 3069/* make periodics pending */
1863inline_size void 3070inline_size void
1864periodics_reify (EV_P) 3071periodics_reify (EV_P)
1865{ 3072{
1866 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
1867 3074
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3075 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3076 {
1870 int feed_count = 0;
1871
1872 do 3077 do
1873 { 3078 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3079 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3080
1876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3081 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3090 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3091 downheap (periodics, periodiccnt, HEAP0);
1887 } 3092 }
1888 else if (w->interval) 3093 else if (w->interval)
1889 { 3094 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3095 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3096 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3097 downheap (periodics, periodiccnt, HEAP0);
1906 } 3098 }
1907 else 3099 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3100 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3107 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3108 }
1917} 3109}
1918 3110
1919/* simply recalculate all periodics */ 3111/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3112/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 3113static void noinline ecb_cold
1922periodics_reschedule (EV_P) 3114periodics_reschedule (EV_P)
1923{ 3115{
1924 int i; 3116 int i;
1925 3117
1926 /* adjust periodics after time jump */ 3118 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3122
1931 if (w->reschedule_cb) 3123 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3124 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3125 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3126 periodic_recalc (EV_A_ w);
1935 3127
1936 ANHE_at_cache (periodics [i]); 3128 ANHE_at_cache (periodics [i]);
1937 } 3129 }
1938 3130
1939 reheap (periodics, periodiccnt); 3131 reheap (periodics, periodiccnt);
1940} 3132}
1941#endif 3133#endif
1942 3134
1943/* adjust all timers by a given offset */ 3135/* adjust all timers by a given offset */
1944static void noinline 3136static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3137timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3138{
1947 int i; 3139 int i;
1948 3140
1949 for (i = 0; i < timercnt; ++i) 3141 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3145 ANHE_at_cache (*he);
1954 } 3146 }
1955} 3147}
1956 3148
1957/* fetch new monotonic and realtime times from the kernel */ 3149/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3150/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3151inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3152time_update (EV_P_ ev_tstamp max_block)
1961{ 3153{
1962#if EV_USE_MONOTONIC 3154#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3155 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 3178 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 3179 * in the unlikely event of having been preempted here.
1988 */ 3180 */
1989 for (i = 4; --i; ) 3181 for (i = 4; --i; )
1990 { 3182 {
3183 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3184 rtmn_diff = ev_rt_now - mn_now;
1992 3185
3186 diff = odiff - rtmn_diff;
3187
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3188 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 3189 return; /* all is well */
1995 3190
1996 ev_rt_now = ev_time (); 3191 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3192 mn_now = get_clock ();
1998 now_floor = mn_now; 3193 now_floor = mn_now;
… …
2020 3215
2021 mn_now = ev_rt_now; 3216 mn_now = ev_rt_now;
2022 } 3217 }
2023} 3218}
2024 3219
2025static int loop_done; 3220int
2026
2027void
2028ev_loop (EV_P_ int flags) 3221ev_run (EV_P_ int flags)
2029{ 3222{
3223#if EV_FEATURE_API
3224 ++loop_depth;
3225#endif
3226
3227 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3228
2030 loop_done = EVUNLOOP_CANCEL; 3229 loop_done = EVBREAK_CANCEL;
2031 3230
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3231 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 3232
2034 do 3233 do
2035 { 3234 {
2036#if EV_VERIFY >= 2 3235#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3236 ev_verify (EV_A);
2038#endif 3237#endif
2039 3238
2040#ifndef _WIN32 3239#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3240 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3241 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3249 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3250 if (expect_false (postfork))
2052 if (forkcnt) 3251 if (forkcnt)
2053 { 3252 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3253 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3254 EV_INVOKE_PENDING;
2056 } 3255 }
2057#endif 3256#endif
2058 3257
3258#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3259 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3260 if (expect_false (preparecnt))
2061 { 3261 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3262 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3263 EV_INVOKE_PENDING;
2064 } 3264 }
3265#endif
3266
3267 if (expect_false (loop_done))
3268 break;
2065 3269
2066 /* we might have forked, so reify kernel state if necessary */ 3270 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3271 if (expect_false (postfork))
2068 loop_fork (EV_A); 3272 loop_fork (EV_A);
2069 3273
… …
2073 /* calculate blocking time */ 3277 /* calculate blocking time */
2074 { 3278 {
2075 ev_tstamp waittime = 0.; 3279 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3280 ev_tstamp sleeptime = 0.;
2077 3281
3282 /* remember old timestamp for io_blocktime calculation */
3283 ev_tstamp prev_mn_now = mn_now;
3284
3285 /* update time to cancel out callback processing overhead */
3286 time_update (EV_A_ 1e100);
3287
3288 /* from now on, we want a pipe-wake-up */
3289 pipe_write_wanted = 1;
3290
3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3292
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3294 {
2080 /* update time to cancel out callback processing overhead */
2081 time_update (EV_A_ 1e100);
2082
2083 waittime = MAX_BLOCKTIME; 3295 waittime = MAX_BLOCKTIME;
2084 3296
2085 if (timercnt) 3297 if (timercnt)
2086 { 3298 {
2087 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3299 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2088 if (waittime > to) waittime = to; 3300 if (waittime > to) waittime = to;
2089 } 3301 }
2090 3302
2091#if EV_PERIODIC_ENABLE 3303#if EV_PERIODIC_ENABLE
2092 if (periodiccnt) 3304 if (periodiccnt)
2093 { 3305 {
2094 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3306 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2095 if (waittime > to) waittime = to; 3307 if (waittime > to) waittime = to;
2096 } 3308 }
2097#endif 3309#endif
2098 3310
3311 /* don't let timeouts decrease the waittime below timeout_blocktime */
2099 if (expect_false (waittime < timeout_blocktime)) 3312 if (expect_false (waittime < timeout_blocktime))
2100 waittime = timeout_blocktime; 3313 waittime = timeout_blocktime;
2101 3314
2102 sleeptime = waittime - backend_fudge; 3315 /* at this point, we NEED to wait, so we have to ensure */
3316 /* to pass a minimum nonzero value to the backend */
3317 if (expect_false (waittime < backend_mintime))
3318 waittime = backend_mintime;
2103 3319
3320 /* extra check because io_blocktime is commonly 0 */
2104 if (expect_true (sleeptime > io_blocktime)) 3321 if (expect_false (io_blocktime))
2105 sleeptime = io_blocktime;
2106
2107 if (sleeptime)
2108 { 3322 {
3323 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3324
3325 if (sleeptime > waittime - backend_mintime)
3326 sleeptime = waittime - backend_mintime;
3327
3328 if (expect_true (sleeptime > 0.))
3329 {
2109 ev_sleep (sleeptime); 3330 ev_sleep (sleeptime);
2110 waittime -= sleeptime; 3331 waittime -= sleeptime;
3332 }
2111 } 3333 }
2112 } 3334 }
2113 3335
3336#if EV_FEATURE_API
2114 ++loop_count; 3337 ++loop_count;
3338#endif
3339 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2115 backend_poll (EV_A_ waittime); 3340 backend_poll (EV_A_ waittime);
3341 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3342
3343 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3344
3345 ECB_MEMORY_FENCE_ACQUIRE;
3346 if (pipe_write_skipped)
3347 {
3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3350 }
3351
2116 3352
2117 /* update ev_rt_now, do magic */ 3353 /* update ev_rt_now, do magic */
2118 time_update (EV_A_ waittime + sleeptime); 3354 time_update (EV_A_ waittime + sleeptime);
2119 } 3355 }
2120 3356
… …
2127#if EV_IDLE_ENABLE 3363#if EV_IDLE_ENABLE
2128 /* queue idle watchers unless other events are pending */ 3364 /* queue idle watchers unless other events are pending */
2129 idle_reify (EV_A); 3365 idle_reify (EV_A);
2130#endif 3366#endif
2131 3367
3368#if EV_CHECK_ENABLE
2132 /* queue check watchers, to be executed first */ 3369 /* queue check watchers, to be executed first */
2133 if (expect_false (checkcnt)) 3370 if (expect_false (checkcnt))
2134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3371 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3372#endif
2135 3373
2136 call_pending (EV_A); 3374 EV_INVOKE_PENDING;
2137 } 3375 }
2138 while (expect_true ( 3376 while (expect_true (
2139 activecnt 3377 activecnt
2140 && !loop_done 3378 && !loop_done
2141 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3379 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2142 )); 3380 ));
2143 3381
2144 if (loop_done == EVUNLOOP_ONE) 3382 if (loop_done == EVBREAK_ONE)
2145 loop_done = EVUNLOOP_CANCEL; 3383 loop_done = EVBREAK_CANCEL;
3384
3385#if EV_FEATURE_API
3386 --loop_depth;
3387#endif
3388
3389 return activecnt;
2146} 3390}
2147 3391
2148void 3392void
2149ev_unloop (EV_P_ int how) 3393ev_break (EV_P_ int how) EV_THROW
2150{ 3394{
2151 loop_done = how; 3395 loop_done = how;
2152} 3396}
2153 3397
2154void 3398void
2155ev_ref (EV_P) 3399ev_ref (EV_P) EV_THROW
2156{ 3400{
2157 ++activecnt; 3401 ++activecnt;
2158} 3402}
2159 3403
2160void 3404void
2161ev_unref (EV_P) 3405ev_unref (EV_P) EV_THROW
2162{ 3406{
2163 --activecnt; 3407 --activecnt;
2164} 3408}
2165 3409
2166void 3410void
2167ev_now_update (EV_P) 3411ev_now_update (EV_P) EV_THROW
2168{ 3412{
2169 time_update (EV_A_ 1e100); 3413 time_update (EV_A_ 1e100);
2170} 3414}
2171 3415
2172void 3416void
2173ev_suspend (EV_P) 3417ev_suspend (EV_P) EV_THROW
2174{ 3418{
2175 ev_now_update (EV_A); 3419 ev_now_update (EV_A);
2176} 3420}
2177 3421
2178void 3422void
2179ev_resume (EV_P) 3423ev_resume (EV_P) EV_THROW
2180{ 3424{
2181 ev_tstamp mn_prev = mn_now; 3425 ev_tstamp mn_prev = mn_now;
2182 3426
2183 ev_now_update (EV_A); 3427 ev_now_update (EV_A);
2184 timers_reschedule (EV_A_ mn_now - mn_prev); 3428 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2201inline_size void 3445inline_size void
2202wlist_del (WL *head, WL elem) 3446wlist_del (WL *head, WL elem)
2203{ 3447{
2204 while (*head) 3448 while (*head)
2205 { 3449 {
2206 if (*head == elem) 3450 if (expect_true (*head == elem))
2207 { 3451 {
2208 *head = elem->next; 3452 *head = elem->next;
2209 return; 3453 break;
2210 } 3454 }
2211 3455
2212 head = &(*head)->next; 3456 head = &(*head)->next;
2213 } 3457 }
2214} 3458}
… …
2223 w->pending = 0; 3467 w->pending = 0;
2224 } 3468 }
2225} 3469}
2226 3470
2227int 3471int
2228ev_clear_pending (EV_P_ void *w) 3472ev_clear_pending (EV_P_ void *w) EV_THROW
2229{ 3473{
2230 W w_ = (W)w; 3474 W w_ = (W)w;
2231 int pending = w_->pending; 3475 int pending = w_->pending;
2232 3476
2233 if (expect_true (pending)) 3477 if (expect_true (pending))
… …
2242} 3486}
2243 3487
2244inline_size void 3488inline_size void
2245pri_adjust (EV_P_ W w) 3489pri_adjust (EV_P_ W w)
2246{ 3490{
2247 int pri = w->priority; 3491 int pri = ev_priority (w);
2248 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3492 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3493 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250 w->priority = pri; 3494 ev_set_priority (w, pri);
2251} 3495}
2252 3496
2253inline_speed void 3497inline_speed void
2254ev_start (EV_P_ W w, int active) 3498ev_start (EV_P_ W w, int active)
2255{ 3499{
… …
2266} 3510}
2267 3511
2268/*****************************************************************************/ 3512/*****************************************************************************/
2269 3513
2270void noinline 3514void noinline
2271ev_io_start (EV_P_ ev_io *w) 3515ev_io_start (EV_P_ ev_io *w) EV_THROW
2272{ 3516{
2273 int fd = w->fd; 3517 int fd = w->fd;
2274 3518
2275 if (expect_false (ev_is_active (w))) 3519 if (expect_false (ev_is_active (w)))
2276 return; 3520 return;
2277 3521
2278 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3522 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3523 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280 3524
2281 EV_FREQUENT_CHECK; 3525 EV_FREQUENT_CHECK;
2282 3526
2283 ev_start (EV_A_ (W)w, 1); 3527 ev_start (EV_A_ (W)w, 1);
2284 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285 wlist_add (&anfds[fd].head, (WL)w); 3529 wlist_add (&anfds[fd].head, (WL)w);
2286 3530
3531 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533
2287 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288 w->events &= ~EV__IOFDSET; 3535 w->events &= ~EV__IOFDSET;
2289 3536
2290 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2291} 3538}
2292 3539
2293void noinline 3540void noinline
2294ev_io_stop (EV_P_ ev_io *w) 3541ev_io_stop (EV_P_ ev_io *w) EV_THROW
2295{ 3542{
2296 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2297 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2298 return; 3545 return;
2299 3546
… …
2302 EV_FREQUENT_CHECK; 3549 EV_FREQUENT_CHECK;
2303 3550
2304 wlist_del (&anfds[w->fd].head, (WL)w); 3551 wlist_del (&anfds[w->fd].head, (WL)w);
2305 ev_stop (EV_A_ (W)w); 3552 ev_stop (EV_A_ (W)w);
2306 3553
2307 fd_change (EV_A_ w->fd, 1); 3554 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2308 3555
2309 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2310} 3557}
2311 3558
2312void noinline 3559void noinline
2313ev_timer_start (EV_P_ ev_timer *w) 3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2314{ 3561{
2315 if (expect_false (ev_is_active (w))) 3562 if (expect_false (ev_is_active (w)))
2316 return; 3563 return;
2317 3564
2318 ev_at (w) += mn_now; 3565 ev_at (w) += mn_now;
… …
2332 3579
2333 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2334} 3581}
2335 3582
2336void noinline 3583void noinline
2337ev_timer_stop (EV_P_ ev_timer *w) 3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2338{ 3585{
2339 clear_pending (EV_A_ (W)w); 3586 clear_pending (EV_A_ (W)w);
2340 if (expect_false (!ev_is_active (w))) 3587 if (expect_false (!ev_is_active (w)))
2341 return; 3588 return;
2342 3589
… …
2354 timers [active] = timers [timercnt + HEAP0]; 3601 timers [active] = timers [timercnt + HEAP0];
2355 adjustheap (timers, timercnt, active); 3602 adjustheap (timers, timercnt, active);
2356 } 3603 }
2357 } 3604 }
2358 3605
2359 EV_FREQUENT_CHECK;
2360
2361 ev_at (w) -= mn_now; 3606 ev_at (w) -= mn_now;
2362 3607
2363 ev_stop (EV_A_ (W)w); 3608 ev_stop (EV_A_ (W)w);
3609
3610 EV_FREQUENT_CHECK;
2364} 3611}
2365 3612
2366void noinline 3613void noinline
2367ev_timer_again (EV_P_ ev_timer *w) 3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2368{ 3615{
2369 EV_FREQUENT_CHECK; 3616 EV_FREQUENT_CHECK;
3617
3618 clear_pending (EV_A_ (W)w);
2370 3619
2371 if (ev_is_active (w)) 3620 if (ev_is_active (w))
2372 { 3621 {
2373 if (w->repeat) 3622 if (w->repeat)
2374 { 3623 {
… …
2386 } 3635 }
2387 3636
2388 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2389} 3638}
2390 3639
3640ev_tstamp
3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3642{
3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3644}
3645
2391#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2392void noinline 3647void noinline
2393ev_periodic_start (EV_P_ ev_periodic *w) 3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2394{ 3649{
2395 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2396 return; 3651 return;
2397 3652
2398 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
2399 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2400 else if (w->interval) 3655 else if (w->interval)
2401 { 3656 {
2402 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3657 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2403 /* this formula differs from the one in periodic_reify because we do not always round up */ 3658 periodic_recalc (EV_A_ w);
2404 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2405 } 3659 }
2406 else 3660 else
2407 ev_at (w) = w->offset; 3661 ev_at (w) = w->offset;
2408 3662
2409 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
… …
2419 3673
2420 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2421} 3675}
2422 3676
2423void noinline 3677void noinline
2424ev_periodic_stop (EV_P_ ev_periodic *w) 3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2425{ 3679{
2426 clear_pending (EV_A_ (W)w); 3680 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 3681 if (expect_false (!ev_is_active (w)))
2428 return; 3682 return;
2429 3683
… …
2441 periodics [active] = periodics [periodiccnt + HEAP0]; 3695 periodics [active] = periodics [periodiccnt + HEAP0];
2442 adjustheap (periodics, periodiccnt, active); 3696 adjustheap (periodics, periodiccnt, active);
2443 } 3697 }
2444 } 3698 }
2445 3699
2446 EV_FREQUENT_CHECK;
2447
2448 ev_stop (EV_A_ (W)w); 3700 ev_stop (EV_A_ (W)w);
3701
3702 EV_FREQUENT_CHECK;
2449} 3703}
2450 3704
2451void noinline 3705void noinline
2452ev_periodic_again (EV_P_ ev_periodic *w) 3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2453{ 3707{
2454 /* TODO: use adjustheap and recalculation */ 3708 /* TODO: use adjustheap and recalculation */
2455 ev_periodic_stop (EV_A_ w); 3709 ev_periodic_stop (EV_A_ w);
2456 ev_periodic_start (EV_A_ w); 3710 ev_periodic_start (EV_A_ w);
2457} 3711}
… …
2459 3713
2460#ifndef SA_RESTART 3714#ifndef SA_RESTART
2461# define SA_RESTART 0 3715# define SA_RESTART 0
2462#endif 3716#endif
2463 3717
3718#if EV_SIGNAL_ENABLE
3719
2464void noinline 3720void noinline
2465ev_signal_start (EV_P_ ev_signal *w) 3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2466{ 3722{
2467#if EV_MULTIPLICITY
2468 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469#endif
2470 if (expect_false (ev_is_active (w))) 3723 if (expect_false (ev_is_active (w)))
2471 return; 3724 return;
2472 3725
2473 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474 3727
2475 evpipe_init (EV_A); 3728#if EV_MULTIPLICITY
3729 assert (("libev: a signal must not be attached to two different loops",
3730 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2476 3731
2477 EV_FREQUENT_CHECK; 3732 signals [w->signum - 1].loop = EV_A;
3733 ECB_MEMORY_FENCE_RELEASE;
3734#endif
2478 3735
3736 EV_FREQUENT_CHECK;
3737
3738#if EV_USE_SIGNALFD
3739 if (sigfd == -2)
2479 { 3740 {
2480#ifndef _WIN32 3741 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481 sigset_t full, prev; 3742 if (sigfd < 0 && errno == EINVAL)
2482 sigfillset (&full); 3743 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483 sigprocmask (SIG_SETMASK, &full, &prev);
2484#endif
2485 3744
2486 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3745 if (sigfd >= 0)
3746 {
3747 fd_intern (sigfd); /* doing it twice will not hurt */
2487 3748
2488#ifndef _WIN32 3749 sigemptyset (&sigfd_set);
2489 sigprocmask (SIG_SETMASK, &prev, 0); 3750
2490#endif 3751 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3752 ev_set_priority (&sigfd_w, EV_MAXPRI);
3753 ev_io_start (EV_A_ &sigfd_w);
3754 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3755 }
2491 } 3756 }
3757
3758 if (sigfd >= 0)
3759 {
3760 /* TODO: check .head */
3761 sigaddset (&sigfd_set, w->signum);
3762 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3763
3764 signalfd (sigfd, &sigfd_set, 0);
3765 }
3766#endif
2492 3767
2493 ev_start (EV_A_ (W)w, 1); 3768 ev_start (EV_A_ (W)w, 1);
2494 wlist_add (&signals [w->signum - 1].head, (WL)w); 3769 wlist_add (&signals [w->signum - 1].head, (WL)w);
2495 3770
2496 if (!((WL)w)->next) 3771 if (!((WL)w)->next)
3772# if EV_USE_SIGNALFD
3773 if (sigfd < 0) /*TODO*/
3774# endif
2497 { 3775 {
2498#if _WIN32 3776# ifdef _WIN32
3777 evpipe_init (EV_A);
3778
2499 signal (w->signum, ev_sighandler); 3779 signal (w->signum, ev_sighandler);
2500#else 3780# else
2501 struct sigaction sa; 3781 struct sigaction sa;
3782
3783 evpipe_init (EV_A);
3784
2502 sa.sa_handler = ev_sighandler; 3785 sa.sa_handler = ev_sighandler;
2503 sigfillset (&sa.sa_mask); 3786 sigfillset (&sa.sa_mask);
2504 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3787 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505 sigaction (w->signum, &sa, 0); 3788 sigaction (w->signum, &sa, 0);
3789
3790 if (origflags & EVFLAG_NOSIGMASK)
3791 {
3792 sigemptyset (&sa.sa_mask);
3793 sigaddset (&sa.sa_mask, w->signum);
3794 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3795 }
2506#endif 3796#endif
2507 } 3797 }
2508 3798
2509 EV_FREQUENT_CHECK; 3799 EV_FREQUENT_CHECK;
2510} 3800}
2511 3801
2512void noinline 3802void noinline
2513ev_signal_stop (EV_P_ ev_signal *w) 3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2514{ 3804{
2515 clear_pending (EV_A_ (W)w); 3805 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3806 if (expect_false (!ev_is_active (w)))
2517 return; 3807 return;
2518 3808
… …
2520 3810
2521 wlist_del (&signals [w->signum - 1].head, (WL)w); 3811 wlist_del (&signals [w->signum - 1].head, (WL)w);
2522 ev_stop (EV_A_ (W)w); 3812 ev_stop (EV_A_ (W)w);
2523 3813
2524 if (!signals [w->signum - 1].head) 3814 if (!signals [w->signum - 1].head)
3815 {
3816#if EV_MULTIPLICITY
3817 signals [w->signum - 1].loop = 0; /* unattach from signal */
3818#endif
3819#if EV_USE_SIGNALFD
3820 if (sigfd >= 0)
3821 {
3822 sigset_t ss;
3823
3824 sigemptyset (&ss);
3825 sigaddset (&ss, w->signum);
3826 sigdelset (&sigfd_set, w->signum);
3827
3828 signalfd (sigfd, &sigfd_set, 0);
3829 sigprocmask (SIG_UNBLOCK, &ss, 0);
3830 }
3831 else
3832#endif
2525 signal (w->signum, SIG_DFL); 3833 signal (w->signum, SIG_DFL);
3834 }
2526 3835
2527 EV_FREQUENT_CHECK; 3836 EV_FREQUENT_CHECK;
2528} 3837}
3838
3839#endif
3840
3841#if EV_CHILD_ENABLE
2529 3842
2530void 3843void
2531ev_child_start (EV_P_ ev_child *w) 3844ev_child_start (EV_P_ ev_child *w) EV_THROW
2532{ 3845{
2533#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
2534 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif 3848#endif
2536 if (expect_false (ev_is_active (w))) 3849 if (expect_false (ev_is_active (w)))
2537 return; 3850 return;
2538 3851
2539 EV_FREQUENT_CHECK; 3852 EV_FREQUENT_CHECK;
2540 3853
2541 ev_start (EV_A_ (W)w, 1); 3854 ev_start (EV_A_ (W)w, 1);
2542 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3855 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543 3856
2544 EV_FREQUENT_CHECK; 3857 EV_FREQUENT_CHECK;
2545} 3858}
2546 3859
2547void 3860void
2548ev_child_stop (EV_P_ ev_child *w) 3861ev_child_stop (EV_P_ ev_child *w) EV_THROW
2549{ 3862{
2550 clear_pending (EV_A_ (W)w); 3863 clear_pending (EV_A_ (W)w);
2551 if (expect_false (!ev_is_active (w))) 3864 if (expect_false (!ev_is_active (w)))
2552 return; 3865 return;
2553 3866
2554 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2555 3868
2556 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3869 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557 ev_stop (EV_A_ (W)w); 3870 ev_stop (EV_A_ (W)w);
2558 3871
2559 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
2560} 3873}
3874
3875#endif
2561 3876
2562#if EV_STAT_ENABLE 3877#if EV_STAT_ENABLE
2563 3878
2564# ifdef _WIN32 3879# ifdef _WIN32
2565# undef lstat 3880# undef lstat
… …
2571#define MIN_STAT_INTERVAL 0.1074891 3886#define MIN_STAT_INTERVAL 0.1074891
2572 3887
2573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3888static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574 3889
2575#if EV_USE_INOTIFY 3890#if EV_USE_INOTIFY
2576# define EV_INOTIFY_BUFSIZE 8192 3891
3892/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2577 3894
2578static void noinline 3895static void noinline
2579infy_add (EV_P_ ev_stat *w) 3896infy_add (EV_P_ ev_stat *w)
2580{ 3897{
2581 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); 3898 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);
2582 3899
2583 if (w->wd < 0) 3900 if (w->wd >= 0)
3901 {
3902 struct statfs sfs;
3903
3904 /* now local changes will be tracked by inotify, but remote changes won't */
3905 /* unless the filesystem is known to be local, we therefore still poll */
3906 /* also do poll on <2.6.25, but with normal frequency */
3907
3908 if (!fs_2625)
3909 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3910 else if (!statfs (w->path, &sfs)
3911 && (sfs.f_type == 0x1373 /* devfs */
3912 || sfs.f_type == 0xEF53 /* ext2/3 */
3913 || sfs.f_type == 0x3153464a /* jfs */
3914 || sfs.f_type == 0x52654973 /* reiser3 */
3915 || sfs.f_type == 0x01021994 /* tempfs */
3916 || sfs.f_type == 0x58465342 /* xfs */))
3917 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3918 else
3919 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584 { 3920 }
3921 else
3922 {
3923 /* can't use inotify, continue to stat */
2585 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3924 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587 3925
2588 /* monitor some parent directory for speedup hints */ 3926 /* if path is not there, monitor some parent directory for speedup hints */
2589 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3927 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2590 /* but an efficiency issue only */ 3928 /* but an efficiency issue only */
2591 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3929 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592 { 3930 {
2593 char path [4096]; 3931 char path [4096];
… …
2603 if (!pend || pend == path) 3941 if (!pend || pend == path)
2604 break; 3942 break;
2605 3943
2606 *pend = 0; 3944 *pend = 0;
2607 w->wd = inotify_add_watch (fs_fd, path, mask); 3945 w->wd = inotify_add_watch (fs_fd, path, mask);
2608 } 3946 }
2609 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3947 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610 } 3948 }
2611 } 3949 }
2612 3950
2613 if (w->wd >= 0) 3951 if (w->wd >= 0)
2614 {
2615 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3952 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2616 3953
2617 /* now local changes will be tracked by inotify, but remote changes won't */ 3954 /* now re-arm timer, if required */
2618 /* unless the filesystem it known to be local, we therefore still poll */ 3955 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619 /* also do poll on <2.6.25, but with normal frequency */
2620 struct statfs sfs;
2621
2622 if (fs_2625 && !statfs (w->path, &sfs))
2623 if (sfs.f_type == 0x1373 /* devfs */
2624 || sfs.f_type == 0xEF53 /* ext2/3 */
2625 || sfs.f_type == 0x3153464a /* jfs */
2626 || sfs.f_type == 0x52654973 /* reiser3 */
2627 || sfs.f_type == 0x01021994 /* tempfs */
2628 || sfs.f_type == 0x58465342 /* xfs */)
2629 return;
2630
2631 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632 ev_timer_again (EV_A_ &w->timer); 3956 ev_timer_again (EV_A_ &w->timer);
2633 } 3957 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634} 3958}
2635 3959
2636static void noinline 3960static void noinline
2637infy_del (EV_P_ ev_stat *w) 3961infy_del (EV_P_ ev_stat *w)
2638{ 3962{
… …
2641 3965
2642 if (wd < 0) 3966 if (wd < 0)
2643 return; 3967 return;
2644 3968
2645 w->wd = -2; 3969 w->wd = -2;
2646 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3970 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647 wlist_del (&fs_hash [slot].head, (WL)w); 3971 wlist_del (&fs_hash [slot].head, (WL)w);
2648 3972
2649 /* remove this watcher, if others are watching it, they will rearm */ 3973 /* remove this watcher, if others are watching it, they will rearm */
2650 inotify_rm_watch (fs_fd, wd); 3974 inotify_rm_watch (fs_fd, wd);
2651} 3975}
… …
2653static void noinline 3977static void noinline
2654infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3978infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655{ 3979{
2656 if (slot < 0) 3980 if (slot < 0)
2657 /* overflow, need to check for all hash slots */ 3981 /* overflow, need to check for all hash slots */
2658 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3982 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659 infy_wd (EV_A_ slot, wd, ev); 3983 infy_wd (EV_A_ slot, wd, ev);
2660 else 3984 else
2661 { 3985 {
2662 WL w_; 3986 WL w_;
2663 3987
2664 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3988 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665 { 3989 {
2666 ev_stat *w = (ev_stat *)w_; 3990 ev_stat *w = (ev_stat *)w_;
2667 w_ = w_->next; /* lets us remove this watcher and all before it */ 3991 w_ = w_->next; /* lets us remove this watcher and all before it */
2668 3992
2669 if (w->wd == wd || wd == -1) 3993 if (w->wd == wd || wd == -1)
2670 { 3994 {
2671 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3995 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672 { 3996 {
2673 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3997 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2674 w->wd = -1; 3998 w->wd = -1;
2675 infy_add (EV_A_ w); /* re-add, no matter what */ 3999 infy_add (EV_A_ w); /* re-add, no matter what */
2676 } 4000 }
2677 4001
2678 stat_timer_cb (EV_A_ &w->timer, 0); 4002 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2683 4007
2684static void 4008static void
2685infy_cb (EV_P_ ev_io *w, int revents) 4009infy_cb (EV_P_ ev_io *w, int revents)
2686{ 4010{
2687 char buf [EV_INOTIFY_BUFSIZE]; 4011 char buf [EV_INOTIFY_BUFSIZE];
2688 struct inotify_event *ev = (struct inotify_event *)buf;
2689 int ofs; 4012 int ofs;
2690 int len = read (fs_fd, buf, sizeof (buf)); 4013 int len = read (fs_fd, buf, sizeof (buf));
2691 4014
2692 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4015 for (ofs = 0; ofs < len; )
4016 {
4017 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2693 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4018 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4019 ofs += sizeof (struct inotify_event) + ev->len;
4020 }
2694} 4021}
2695 4022
2696inline_size void 4023inline_size void ecb_cold
2697check_2625 (EV_P) 4024ev_check_2625 (EV_P)
2698{ 4025{
2699 /* kernels < 2.6.25 are borked 4026 /* kernels < 2.6.25 are borked
2700 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4027 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701 */ 4028 */
2702 struct utsname buf; 4029 if (ev_linux_version () < 0x020619)
2703 int major, minor, micro;
2704
2705 if (uname (&buf))
2706 return; 4030 return;
2707 4031
2708 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709 return;
2710
2711 if (major < 2
2712 || (major == 2 && minor < 6)
2713 || (major == 2 && minor == 6 && micro < 25))
2714 return;
2715
2716 fs_2625 = 1; 4032 fs_2625 = 1;
4033}
4034
4035inline_size int
4036infy_newfd (void)
4037{
4038#if defined IN_CLOEXEC && defined IN_NONBLOCK
4039 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4040 if (fd >= 0)
4041 return fd;
4042#endif
4043 return inotify_init ();
2717} 4044}
2718 4045
2719inline_size void 4046inline_size void
2720infy_init (EV_P) 4047infy_init (EV_P)
2721{ 4048{
2722 if (fs_fd != -2) 4049 if (fs_fd != -2)
2723 return; 4050 return;
2724 4051
2725 fs_fd = -1; 4052 fs_fd = -1;
2726 4053
2727 check_2625 (EV_A); 4054 ev_check_2625 (EV_A);
2728 4055
2729 fs_fd = inotify_init (); 4056 fs_fd = infy_newfd ();
2730 4057
2731 if (fs_fd >= 0) 4058 if (fs_fd >= 0)
2732 { 4059 {
4060 fd_intern (fs_fd);
2733 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4061 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734 ev_set_priority (&fs_w, EV_MAXPRI); 4062 ev_set_priority (&fs_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &fs_w); 4063 ev_io_start (EV_A_ &fs_w);
4064 ev_unref (EV_A);
2736 } 4065 }
2737} 4066}
2738 4067
2739inline_size void 4068inline_size void
2740infy_fork (EV_P) 4069infy_fork (EV_P)
… …
2742 int slot; 4071 int slot;
2743 4072
2744 if (fs_fd < 0) 4073 if (fs_fd < 0)
2745 return; 4074 return;
2746 4075
4076 ev_ref (EV_A);
4077 ev_io_stop (EV_A_ &fs_w);
2747 close (fs_fd); 4078 close (fs_fd);
2748 fs_fd = inotify_init (); 4079 fs_fd = infy_newfd ();
2749 4080
4081 if (fs_fd >= 0)
4082 {
4083 fd_intern (fs_fd);
4084 ev_io_set (&fs_w, fs_fd, EV_READ);
4085 ev_io_start (EV_A_ &fs_w);
4086 ev_unref (EV_A);
4087 }
4088
2750 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4089 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751 { 4090 {
2752 WL w_ = fs_hash [slot].head; 4091 WL w_ = fs_hash [slot].head;
2753 fs_hash [slot].head = 0; 4092 fs_hash [slot].head = 0;
2754 4093
2755 while (w_) 4094 while (w_)
… …
2760 w->wd = -1; 4099 w->wd = -1;
2761 4100
2762 if (fs_fd >= 0) 4101 if (fs_fd >= 0)
2763 infy_add (EV_A_ w); /* re-add, no matter what */ 4102 infy_add (EV_A_ w); /* re-add, no matter what */
2764 else 4103 else
4104 {
4105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4106 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765 ev_timer_again (EV_A_ &w->timer); 4107 ev_timer_again (EV_A_ &w->timer);
4108 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4109 }
2766 } 4110 }
2767 } 4111 }
2768} 4112}
2769 4113
2770#endif 4114#endif
… …
2774#else 4118#else
2775# define EV_LSTAT(p,b) lstat (p, b) 4119# define EV_LSTAT(p,b) lstat (p, b)
2776#endif 4120#endif
2777 4121
2778void 4122void
2779ev_stat_stat (EV_P_ ev_stat *w) 4123ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2780{ 4124{
2781 if (lstat (w->path, &w->attr) < 0) 4125 if (lstat (w->path, &w->attr) < 0)
2782 w->attr.st_nlink = 0; 4126 w->attr.st_nlink = 0;
2783 else if (!w->attr.st_nlink) 4127 else if (!w->attr.st_nlink)
2784 w->attr.st_nlink = 1; 4128 w->attr.st_nlink = 1;
… …
2787static void noinline 4131static void noinline
2788stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4132stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789{ 4133{
2790 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4134 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791 4135
2792 /* we copy this here each the time so that */ 4136 ev_statdata prev = w->attr;
2793 /* prev has the old value when the callback gets invoked */
2794 w->prev = w->attr;
2795 ev_stat_stat (EV_A_ w); 4137 ev_stat_stat (EV_A_ w);
2796 4138
2797 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4139 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798 if ( 4140 if (
2799 w->prev.st_dev != w->attr.st_dev 4141 prev.st_dev != w->attr.st_dev
2800 || w->prev.st_ino != w->attr.st_ino 4142 || prev.st_ino != w->attr.st_ino
2801 || w->prev.st_mode != w->attr.st_mode 4143 || prev.st_mode != w->attr.st_mode
2802 || w->prev.st_nlink != w->attr.st_nlink 4144 || prev.st_nlink != w->attr.st_nlink
2803 || w->prev.st_uid != w->attr.st_uid 4145 || prev.st_uid != w->attr.st_uid
2804 || w->prev.st_gid != w->attr.st_gid 4146 || prev.st_gid != w->attr.st_gid
2805 || w->prev.st_rdev != w->attr.st_rdev 4147 || prev.st_rdev != w->attr.st_rdev
2806 || w->prev.st_size != w->attr.st_size 4148 || prev.st_size != w->attr.st_size
2807 || w->prev.st_atime != w->attr.st_atime 4149 || prev.st_atime != w->attr.st_atime
2808 || w->prev.st_mtime != w->attr.st_mtime 4150 || prev.st_mtime != w->attr.st_mtime
2809 || w->prev.st_ctime != w->attr.st_ctime 4151 || prev.st_ctime != w->attr.st_ctime
2810 ) { 4152 ) {
4153 /* we only update w->prev on actual differences */
4154 /* in case we test more often than invoke the callback, */
4155 /* to ensure that prev is always different to attr */
4156 w->prev = prev;
4157
2811 #if EV_USE_INOTIFY 4158 #if EV_USE_INOTIFY
2812 if (fs_fd >= 0) 4159 if (fs_fd >= 0)
2813 { 4160 {
2814 infy_del (EV_A_ w); 4161 infy_del (EV_A_ w);
2815 infy_add (EV_A_ w); 4162 infy_add (EV_A_ w);
… …
2820 ev_feed_event (EV_A_ w, EV_STAT); 4167 ev_feed_event (EV_A_ w, EV_STAT);
2821 } 4168 }
2822} 4169}
2823 4170
2824void 4171void
2825ev_stat_start (EV_P_ ev_stat *w) 4172ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2826{ 4173{
2827 if (expect_false (ev_is_active (w))) 4174 if (expect_false (ev_is_active (w)))
2828 return; 4175 return;
2829 4176
2830 ev_stat_stat (EV_A_ w); 4177 ev_stat_stat (EV_A_ w);
… …
2840 4187
2841 if (fs_fd >= 0) 4188 if (fs_fd >= 0)
2842 infy_add (EV_A_ w); 4189 infy_add (EV_A_ w);
2843 else 4190 else
2844#endif 4191#endif
4192 {
2845 ev_timer_again (EV_A_ &w->timer); 4193 ev_timer_again (EV_A_ &w->timer);
4194 ev_unref (EV_A);
4195 }
2846 4196
2847 ev_start (EV_A_ (W)w, 1); 4197 ev_start (EV_A_ (W)w, 1);
2848 4198
2849 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
2850} 4200}
2851 4201
2852void 4202void
2853ev_stat_stop (EV_P_ ev_stat *w) 4203ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2854{ 4204{
2855 clear_pending (EV_A_ (W)w); 4205 clear_pending (EV_A_ (W)w);
2856 if (expect_false (!ev_is_active (w))) 4206 if (expect_false (!ev_is_active (w)))
2857 return; 4207 return;
2858 4208
2859 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2860 4210
2861#if EV_USE_INOTIFY 4211#if EV_USE_INOTIFY
2862 infy_del (EV_A_ w); 4212 infy_del (EV_A_ w);
2863#endif 4213#endif
4214
4215 if (ev_is_active (&w->timer))
4216 {
4217 ev_ref (EV_A);
2864 ev_timer_stop (EV_A_ &w->timer); 4218 ev_timer_stop (EV_A_ &w->timer);
4219 }
2865 4220
2866 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
2867 4222
2868 EV_FREQUENT_CHECK; 4223 EV_FREQUENT_CHECK;
2869} 4224}
2870#endif 4225#endif
2871 4226
2872#if EV_IDLE_ENABLE 4227#if EV_IDLE_ENABLE
2873void 4228void
2874ev_idle_start (EV_P_ ev_idle *w) 4229ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2875{ 4230{
2876 if (expect_false (ev_is_active (w))) 4231 if (expect_false (ev_is_active (w)))
2877 return; 4232 return;
2878 4233
2879 pri_adjust (EV_A_ (W)w); 4234 pri_adjust (EV_A_ (W)w);
… …
2892 4247
2893 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
2894} 4249}
2895 4250
2896void 4251void
2897ev_idle_stop (EV_P_ ev_idle *w) 4252ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2898{ 4253{
2899 clear_pending (EV_A_ (W)w); 4254 clear_pending (EV_A_ (W)w);
2900 if (expect_false (!ev_is_active (w))) 4255 if (expect_false (!ev_is_active (w)))
2901 return; 4256 return;
2902 4257
… …
2914 4269
2915 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2916} 4271}
2917#endif 4272#endif
2918 4273
4274#if EV_PREPARE_ENABLE
2919void 4275void
2920ev_prepare_start (EV_P_ ev_prepare *w) 4276ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2921{ 4277{
2922 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
2923 return; 4279 return;
2924 4280
2925 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
… …
2930 4286
2931 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
2932} 4288}
2933 4289
2934void 4290void
2935ev_prepare_stop (EV_P_ ev_prepare *w) 4291ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2936{ 4292{
2937 clear_pending (EV_A_ (W)w); 4293 clear_pending (EV_A_ (W)w);
2938 if (expect_false (!ev_is_active (w))) 4294 if (expect_false (!ev_is_active (w)))
2939 return; 4295 return;
2940 4296
… …
2949 4305
2950 ev_stop (EV_A_ (W)w); 4306 ev_stop (EV_A_ (W)w);
2951 4307
2952 EV_FREQUENT_CHECK; 4308 EV_FREQUENT_CHECK;
2953} 4309}
4310#endif
2954 4311
4312#if EV_CHECK_ENABLE
2955void 4313void
2956ev_check_start (EV_P_ ev_check *w) 4314ev_check_start (EV_P_ ev_check *w) EV_THROW
2957{ 4315{
2958 if (expect_false (ev_is_active (w))) 4316 if (expect_false (ev_is_active (w)))
2959 return; 4317 return;
2960 4318
2961 EV_FREQUENT_CHECK; 4319 EV_FREQUENT_CHECK;
… …
2966 4324
2967 EV_FREQUENT_CHECK; 4325 EV_FREQUENT_CHECK;
2968} 4326}
2969 4327
2970void 4328void
2971ev_check_stop (EV_P_ ev_check *w) 4329ev_check_stop (EV_P_ ev_check *w) EV_THROW
2972{ 4330{
2973 clear_pending (EV_A_ (W)w); 4331 clear_pending (EV_A_ (W)w);
2974 if (expect_false (!ev_is_active (w))) 4332 if (expect_false (!ev_is_active (w)))
2975 return; 4333 return;
2976 4334
… …
2985 4343
2986 ev_stop (EV_A_ (W)w); 4344 ev_stop (EV_A_ (W)w);
2987 4345
2988 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
2989} 4347}
4348#endif
2990 4349
2991#if EV_EMBED_ENABLE 4350#if EV_EMBED_ENABLE
2992void noinline 4351void noinline
2993ev_embed_sweep (EV_P_ ev_embed *w) 4352ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2994{ 4353{
2995 ev_loop (w->other, EVLOOP_NONBLOCK); 4354 ev_run (w->other, EVRUN_NOWAIT);
2996} 4355}
2997 4356
2998static void 4357static void
2999embed_io_cb (EV_P_ ev_io *io, int revents) 4358embed_io_cb (EV_P_ ev_io *io, int revents)
3000{ 4359{
3001 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4360 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3002 4361
3003 if (ev_cb (w)) 4362 if (ev_cb (w))
3004 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4363 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3005 else 4364 else
3006 ev_loop (w->other, EVLOOP_NONBLOCK); 4365 ev_run (w->other, EVRUN_NOWAIT);
3007} 4366}
3008 4367
3009static void 4368static void
3010embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4369embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011{ 4370{
3012 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4371 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013 4372
3014 { 4373 {
3015 struct ev_loop *loop = w->other; 4374 EV_P = w->other;
3016 4375
3017 while (fdchangecnt) 4376 while (fdchangecnt)
3018 { 4377 {
3019 fd_reify (EV_A); 4378 fd_reify (EV_A);
3020 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4379 ev_run (EV_A_ EVRUN_NOWAIT);
3021 } 4380 }
3022 } 4381 }
3023} 4382}
3024 4383
3025static void 4384static void
… …
3028 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4387 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3029 4388
3030 ev_embed_stop (EV_A_ w); 4389 ev_embed_stop (EV_A_ w);
3031 4390
3032 { 4391 {
3033 struct ev_loop *loop = w->other; 4392 EV_P = w->other;
3034 4393
3035 ev_loop_fork (EV_A); 4394 ev_loop_fork (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4395 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4396 }
3038 4397
3039 ev_embed_start (EV_A_ w); 4398 ev_embed_start (EV_A_ w);
3040} 4399}
3041 4400
… …
3046 ev_idle_stop (EV_A_ idle); 4405 ev_idle_stop (EV_A_ idle);
3047} 4406}
3048#endif 4407#endif
3049 4408
3050void 4409void
3051ev_embed_start (EV_P_ ev_embed *w) 4410ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3052{ 4411{
3053 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3054 return; 4413 return;
3055 4414
3056 { 4415 {
3057 struct ev_loop *loop = w->other; 4416 EV_P = w->other;
3058 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4417 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4418 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060 } 4419 }
3061 4420
3062 EV_FREQUENT_CHECK; 4421 EV_FREQUENT_CHECK;
… …
3077 4436
3078 EV_FREQUENT_CHECK; 4437 EV_FREQUENT_CHECK;
3079} 4438}
3080 4439
3081void 4440void
3082ev_embed_stop (EV_P_ ev_embed *w) 4441ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3083{ 4442{
3084 clear_pending (EV_A_ (W)w); 4443 clear_pending (EV_A_ (W)w);
3085 if (expect_false (!ev_is_active (w))) 4444 if (expect_false (!ev_is_active (w)))
3086 return; 4445 return;
3087 4446
… …
3089 4448
3090 ev_io_stop (EV_A_ &w->io); 4449 ev_io_stop (EV_A_ &w->io);
3091 ev_prepare_stop (EV_A_ &w->prepare); 4450 ev_prepare_stop (EV_A_ &w->prepare);
3092 ev_fork_stop (EV_A_ &w->fork); 4451 ev_fork_stop (EV_A_ &w->fork);
3093 4452
4453 ev_stop (EV_A_ (W)w);
4454
3094 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
3095} 4456}
3096#endif 4457#endif
3097 4458
3098#if EV_FORK_ENABLE 4459#if EV_FORK_ENABLE
3099void 4460void
3100ev_fork_start (EV_P_ ev_fork *w) 4461ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3101{ 4462{
3102 if (expect_false (ev_is_active (w))) 4463 if (expect_false (ev_is_active (w)))
3103 return; 4464 return;
3104 4465
3105 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
… …
3110 4471
3111 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3112} 4473}
3113 4474
3114void 4475void
3115ev_fork_stop (EV_P_ ev_fork *w) 4476ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3116{ 4477{
3117 clear_pending (EV_A_ (W)w); 4478 clear_pending (EV_A_ (W)w);
3118 if (expect_false (!ev_is_active (w))) 4479 if (expect_false (!ev_is_active (w)))
3119 return; 4480 return;
3120 4481
… …
3131 4492
3132 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
3133} 4494}
3134#endif 4495#endif
3135 4496
4497#if EV_CLEANUP_ENABLE
4498void
4499ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4500{
4501 if (expect_false (ev_is_active (w)))
4502 return;
4503
4504 EV_FREQUENT_CHECK;
4505
4506 ev_start (EV_A_ (W)w, ++cleanupcnt);
4507 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4508 cleanups [cleanupcnt - 1] = w;
4509
4510 /* cleanup watchers should never keep a refcount on the loop */
4511 ev_unref (EV_A);
4512 EV_FREQUENT_CHECK;
4513}
4514
4515void
4516ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4517{
4518 clear_pending (EV_A_ (W)w);
4519 if (expect_false (!ev_is_active (w)))
4520 return;
4521
4522 EV_FREQUENT_CHECK;
4523 ev_ref (EV_A);
4524
4525 {
4526 int active = ev_active (w);
4527
4528 cleanups [active - 1] = cleanups [--cleanupcnt];
4529 ev_active (cleanups [active - 1]) = active;
4530 }
4531
4532 ev_stop (EV_A_ (W)w);
4533
4534 EV_FREQUENT_CHECK;
4535}
4536#endif
4537
3136#if EV_ASYNC_ENABLE 4538#if EV_ASYNC_ENABLE
3137void 4539void
3138ev_async_start (EV_P_ ev_async *w) 4540ev_async_start (EV_P_ ev_async *w) EV_THROW
3139{ 4541{
3140 if (expect_false (ev_is_active (w))) 4542 if (expect_false (ev_is_active (w)))
3141 return; 4543 return;
4544
4545 w->sent = 0;
3142 4546
3143 evpipe_init (EV_A); 4547 evpipe_init (EV_A);
3144 4548
3145 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
3146 4550
… …
3150 4554
3151 EV_FREQUENT_CHECK; 4555 EV_FREQUENT_CHECK;
3152} 4556}
3153 4557
3154void 4558void
3155ev_async_stop (EV_P_ ev_async *w) 4559ev_async_stop (EV_P_ ev_async *w) EV_THROW
3156{ 4560{
3157 clear_pending (EV_A_ (W)w); 4561 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4562 if (expect_false (!ev_is_active (w)))
3159 return; 4563 return;
3160 4564
… …
3171 4575
3172 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
3173} 4577}
3174 4578
3175void 4579void
3176ev_async_send (EV_P_ ev_async *w) 4580ev_async_send (EV_P_ ev_async *w) EV_THROW
3177{ 4581{
3178 w->sent = 1; 4582 w->sent = 1;
3179 evpipe_write (EV_A_ &gotasync); 4583 evpipe_write (EV_A_ &async_pending);
3180} 4584}
3181#endif 4585#endif
3182 4586
3183/*****************************************************************************/ 4587/*****************************************************************************/
3184 4588
… …
3218 4622
3219 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4623 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3220} 4624}
3221 4625
3222void 4626void
3223ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4627ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3224{ 4628{
3225 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4629 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3226 4630
3227 if (expect_false (!once)) 4631 if (expect_false (!once))
3228 { 4632 {
3229 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4633 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3230 return; 4634 return;
3231 } 4635 }
3232 4636
3233 once->cb = cb; 4637 once->cb = cb;
3234 once->arg = arg; 4638 once->arg = arg;
… …
3249} 4653}
3250 4654
3251/*****************************************************************************/ 4655/*****************************************************************************/
3252 4656
3253#if EV_WALK_ENABLE 4657#if EV_WALK_ENABLE
3254void 4658void ecb_cold
3255ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4659ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3256{ 4660{
3257 int i, j; 4661 int i, j;
3258 ev_watcher_list *wl, *wn; 4662 ev_watcher_list *wl, *wn;
3259 4663
3260 if (types & (EV_IO | EV_EMBED)) 4664 if (types & (EV_IO | EV_EMBED))
… …
3303 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4707 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3304#endif 4708#endif
3305 4709
3306#if EV_IDLE_ENABLE 4710#if EV_IDLE_ENABLE
3307 if (types & EV_IDLE) 4711 if (types & EV_IDLE)
3308 for (j = NUMPRI; i--; ) 4712 for (j = NUMPRI; j--; )
3309 for (i = idlecnt [j]; i--; ) 4713 for (i = idlecnt [j]; i--; )
3310 cb (EV_A_ EV_IDLE, idles [j][i]); 4714 cb (EV_A_ EV_IDLE, idles [j][i]);
3311#endif 4715#endif
3312 4716
3313#if EV_FORK_ENABLE 4717#if EV_FORK_ENABLE
… …
3321 if (types & EV_ASYNC) 4725 if (types & EV_ASYNC)
3322 for (i = asynccnt; i--; ) 4726 for (i = asynccnt; i--; )
3323 cb (EV_A_ EV_ASYNC, asyncs [i]); 4727 cb (EV_A_ EV_ASYNC, asyncs [i]);
3324#endif 4728#endif
3325 4729
4730#if EV_PREPARE_ENABLE
3326 if (types & EV_PREPARE) 4731 if (types & EV_PREPARE)
3327 for (i = preparecnt; i--; ) 4732 for (i = preparecnt; i--; )
3328#if EV_EMBED_ENABLE 4733# if EV_EMBED_ENABLE
3329 if (ev_cb (prepares [i]) != embed_prepare_cb) 4734 if (ev_cb (prepares [i]) != embed_prepare_cb)
3330#endif 4735# endif
3331 cb (EV_A_ EV_PREPARE, prepares [i]); 4736 cb (EV_A_ EV_PREPARE, prepares [i]);
4737#endif
3332 4738
4739#if EV_CHECK_ENABLE
3333 if (types & EV_CHECK) 4740 if (types & EV_CHECK)
3334 for (i = checkcnt; i--; ) 4741 for (i = checkcnt; i--; )
3335 cb (EV_A_ EV_CHECK, checks [i]); 4742 cb (EV_A_ EV_CHECK, checks [i]);
4743#endif
3336 4744
4745#if EV_SIGNAL_ENABLE
3337 if (types & EV_SIGNAL) 4746 if (types & EV_SIGNAL)
3338 for (i = 0; i < signalmax; ++i) 4747 for (i = 0; i < EV_NSIG - 1; ++i)
3339 for (wl = signals [i].head; wl; ) 4748 for (wl = signals [i].head; wl; )
3340 { 4749 {
3341 wn = wl->next; 4750 wn = wl->next;
3342 cb (EV_A_ EV_SIGNAL, wl); 4751 cb (EV_A_ EV_SIGNAL, wl);
3343 wl = wn; 4752 wl = wn;
3344 } 4753 }
4754#endif
3345 4755
4756#if EV_CHILD_ENABLE
3346 if (types & EV_CHILD) 4757 if (types & EV_CHILD)
3347 for (i = EV_PID_HASHSIZE; i--; ) 4758 for (i = (EV_PID_HASHSIZE); i--; )
3348 for (wl = childs [i]; wl; ) 4759 for (wl = childs [i]; wl; )
3349 { 4760 {
3350 wn = wl->next; 4761 wn = wl->next;
3351 cb (EV_A_ EV_CHILD, wl); 4762 cb (EV_A_ EV_CHILD, wl);
3352 wl = wn; 4763 wl = wn;
3353 } 4764 }
4765#endif
3354/* EV_STAT 0x00001000 /* stat data changed */ 4766/* EV_STAT 0x00001000 /* stat data changed */
3355/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4767/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356} 4768}
3357#endif 4769#endif
3358 4770
3359#if EV_MULTIPLICITY 4771#if EV_MULTIPLICITY
3360 #include "ev_wrap.h" 4772 #include "ev_wrap.h"
3361#endif 4773#endif
3362 4774
3363#ifdef __cplusplus
3364}
3365#endif
3366

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