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Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs.
Revision 1.429 by root, Tue May 8 15:50:49 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
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# 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
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#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
188 221
189/* 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 */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 225#if defined EV_NSIG
193/* use what's provided */ 226/* use what's provided */
194#elif defined (NSIG) 227#elif defined NSIG
195# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 229#elif defined _NSIG
197# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 231#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 233#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 237#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 239#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 243#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 245#else
213# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
215# define EV_NSIG 64 249# define EV_NSIG 65
216#endif 250#endif
217 251
218/* Default to some arbitrary number that's big enough to get most 252#ifndef EV_USE_FLOOR
219 of the common signals. 253# define EV_USE_FLOOR 0
220*/
221#ifndef NSIG
222# define NSIG 50
223#endif 254#endif
224/* <-- NSIG logic from Configure */ 255
225#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
226# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
227# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
228# else 259# else
229# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
230# endif 261# endif
231#endif 262#endif
232 263
233#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
234# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
235# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
236# else 267# else
237# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
238# endif 269# endif
239#endif 270#endif
240 271
… …
242# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
243#endif 274#endif
244 275
245#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
246# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
247# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
248# else 279# else
249# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
250# endif 281# endif
251#endif 282#endif
252 283
253#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
254# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
255#endif 286#endif
256 287
257#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
258# ifdef _WIN32 289# ifdef _WIN32
259# define EV_USE_POLL 0 290# define EV_USE_POLL 0
260# else 291# else
261# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
262# endif 293# endif
263#endif 294#endif
264 295
265#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
266# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
267# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
268# else 299# else
269# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
270# endif 301# endif
271#endif 302#endif
272 303
… …
278# define EV_USE_PORT 0 309# define EV_USE_PORT 0
279#endif 310#endif
280 311
281#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
282# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
283# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
284# else 315# else
285# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
286# endif 317# endif
287#endif 318#endif
288 319
289#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
290# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
291# define EV_PID_HASHSIZE 1
292# else
293# define EV_PID_HASHSIZE 16
294# endif
295#endif 322#endif
296 323
297#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
298# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
299# define EV_INOTIFY_HASHSIZE 1
300# else
301# define EV_INOTIFY_HASHSIZE 16
302# endif
303#endif 326#endif
304 327
305#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
306# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
307# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
308# else 331# else
309# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
310# endif 333# endif
311#endif 334#endif
312 335
313#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
316# else 339# else
317# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
318# endif 341# endif
319#endif 342#endif
320 343
… …
323# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
324# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
325#endif 348#endif
326 349
327#ifndef EV_VERIFY 350#ifndef EV_VERIFY
328# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
329#endif 352#endif
330 353
331#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
332# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
333#endif 356#endif
334 357
335#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
336# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
337#endif 360#endif
338 361
339/* 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, */
340/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
341#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
342# include <syscall.h> 365# include <sys/syscall.h>
343# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
344# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
345# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
346# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
347# else 370# else
… …
350# endif 373# endif
351#endif 374#endif
352 375
353/* 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 */
354 377
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
355#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
356# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
358#endif 387#endif
359 388
… …
366# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
368#endif 397#endif
369 398
370#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
372# include <sys/select.h> 402# include <sys/select.h>
373# endif 403# endif
374#endif 404#endif
375 405
376#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 407# include <sys/statfs.h>
379# include <sys/inotify.h> 408# include <sys/inotify.h>
380/* 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 */
381# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
… …
393# include <stdint.h> 422# include <stdint.h>
394# ifndef EFD_NONBLOCK 423# ifndef EFD_NONBLOCK
395# define EFD_NONBLOCK O_NONBLOCK 424# define EFD_NONBLOCK O_NONBLOCK
396# endif 425# endif
397# ifndef EFD_CLOEXEC 426# ifndef EFD_CLOEXEC
427# ifdef O_CLOEXEC
398# define EFD_CLOEXEC O_CLOEXEC 428# define EFD_CLOEXEC O_CLOEXEC
429# else
430# define EFD_CLOEXEC 02000000
431# endif
399# endif 432# endif
400# ifdef __cplusplus 433EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401extern "C" { 434#endif
435
436#if EV_USE_SIGNALFD
437/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
438# include <stdint.h>
439# ifndef SFD_NONBLOCK
440# define SFD_NONBLOCK O_NONBLOCK
402# endif 441# endif
403int eventfd (unsigned int initval, int flags); 442# ifndef SFD_CLOEXEC
404# ifdef __cplusplus 443# ifdef O_CLOEXEC
405} 444# define SFD_CLOEXEC O_CLOEXEC
445# else
446# define SFD_CLOEXEC 02000000
447# endif
406# endif 448# endif
407#endif 449EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
408 450
409#if EV_USE_SIGNALFD 451struct signalfd_siginfo
410# include <sys/signalfd.h> 452{
453 uint32_t ssi_signo;
454 char pad[128 - sizeof (uint32_t)];
455};
411#endif 456#endif
412 457
413/**/ 458/**/
414 459
415#if EV_VERIFY >= 3 460#if EV_VERIFY >= 3
416# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 461# define EV_FREQUENT_CHECK ev_verify (EV_A)
417#else 462#else
418# define EV_FREQUENT_CHECK do { } while (0) 463# define EV_FREQUENT_CHECK do { } while (0)
419#endif 464#endif
420 465
421/* 466/*
422 * This is used to avoid floating point rounding problems. 467 * This is used to work around floating point rounding problems.
423 * It is added to ev_rt_now when scheduling periodics
424 * to ensure progress, time-wise, even when rounding
425 * errors are against us.
426 * This value is good at least till the year 4000. 468 * This value is good at least till the year 4000.
427 * Better solutions welcome.
428 */ 469 */
429#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
471/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
430 472
431#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 473#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
432#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 474#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
433/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
434 475
476#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
477#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
478
479/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
480/* ECB.H BEGIN */
481/*
482 * libecb - http://software.schmorp.de/pkg/libecb
483 *
484 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
485 * Copyright (©) 2011 Emanuele Giaquinta
486 * All rights reserved.
487 *
488 * Redistribution and use in source and binary forms, with or without modifica-
489 * tion, are permitted provided that the following conditions are met:
490 *
491 * 1. Redistributions of source code must retain the above copyright notice,
492 * this list of conditions and the following disclaimer.
493 *
494 * 2. Redistributions in binary form must reproduce the above copyright
495 * notice, this list of conditions and the following disclaimer in the
496 * documentation and/or other materials provided with the distribution.
497 *
498 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
499 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
500 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
501 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
502 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
503 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
504 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
505 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
506 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
507 * OF THE POSSIBILITY OF SUCH DAMAGE.
508 */
509
510#ifndef ECB_H
511#define ECB_H
512
513#ifdef _WIN32
514 typedef signed char int8_t;
515 typedef unsigned char uint8_t;
516 typedef signed short int16_t;
517 typedef unsigned short uint16_t;
518 typedef signed int int32_t;
519 typedef unsigned int uint32_t;
435#if __GNUC__ >= 4 520 #if __GNUC__
436# define expect(expr,value) __builtin_expect ((expr),(value)) 521 typedef signed long long int64_t;
437# define noinline __attribute__ ((noinline)) 522 typedef unsigned long long uint64_t;
523 #else /* _MSC_VER || __BORLANDC__ */
524 typedef signed __int64 int64_t;
525 typedef unsigned __int64 uint64_t;
526 #endif
438#else 527#else
439# define expect(expr,value) (expr) 528 #include <inttypes.h>
440# define noinline
441# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
442# define inline
443# endif 529#endif
530
531/* many compilers define _GNUC_ to some versions but then only implement
532 * what their idiot authors think are the "more important" extensions,
533 * causing enormous grief in return for some better fake benchmark numbers.
534 * or so.
535 * we try to detect these and simply assume they are not gcc - if they have
536 * an issue with that they should have done it right in the first place.
537 */
538#ifndef ECB_GCC_VERSION
539 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
540 #define ECB_GCC_VERSION(major,minor) 0
541 #else
542 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
444#endif 543 #endif
544#endif
445 545
546/*****************************************************************************/
547
548/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
549/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
550
551#if ECB_NO_THREADS
552# define ECB_NO_SMP 1
553#endif
554
555#if ECB_NO_THREADS || ECB_NO_SMP
556 #define ECB_MEMORY_FENCE do { } while (0)
557#endif
558
559#ifndef ECB_MEMORY_FENCE
560 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
561 #if __i386 || __i386__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
564 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
565 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
568 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
569 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
570 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
571 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
572 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
573 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
574 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
575 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
576 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
577 #elif __sparc || __sparc__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
579 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
580 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
581 #elif defined __s390__ || defined __s390x__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
583 #elif defined __mips__
584 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
585 #elif defined __alpha__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
587 #endif
588 #endif
589#endif
590
591#ifndef ECB_MEMORY_FENCE
592 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
593 #define ECB_MEMORY_FENCE __sync_synchronize ()
594 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
595 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
596 #elif _MSC_VER >= 1400 /* VC++ 2005 */
597 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
598 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
599 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
600 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
601 #elif defined _WIN32
602 #include <WinNT.h>
603 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
604 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
605 #include <mbarrier.h>
606 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
607 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
608 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
609 #elif __xlC__
610 #define ECB_MEMORY_FENCE __sync ()
611 #endif
612#endif
613
614#ifndef ECB_MEMORY_FENCE
615 #if !ECB_AVOID_PTHREADS
616 /*
617 * if you get undefined symbol references to pthread_mutex_lock,
618 * or failure to find pthread.h, then you should implement
619 * the ECB_MEMORY_FENCE operations for your cpu/compiler
620 * OR provide pthread.h and link against the posix thread library
621 * of your system.
622 */
623 #include <pthread.h>
624 #define ECB_NEEDS_PTHREADS 1
625 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
626
627 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
628 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
629 #endif
630#endif
631
632#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
634#endif
635
636#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
637 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
638#endif
639
640/*****************************************************************************/
641
642#define ECB_C99 (__STDC_VERSION__ >= 199901L)
643
644#if __cplusplus
645 #define ecb_inline static inline
646#elif ECB_GCC_VERSION(2,5)
647 #define ecb_inline static __inline__
648#elif ECB_C99
649 #define ecb_inline static inline
650#else
651 #define ecb_inline static
652#endif
653
654#if ECB_GCC_VERSION(3,3)
655 #define ecb_restrict __restrict__
656#elif ECB_C99
657 #define ecb_restrict restrict
658#else
659 #define ecb_restrict
660#endif
661
662typedef int ecb_bool;
663
664#define ECB_CONCAT_(a, b) a ## b
665#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
666#define ECB_STRINGIFY_(a) # a
667#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
668
669#define ecb_function_ ecb_inline
670
671#if ECB_GCC_VERSION(3,1)
672 #define ecb_attribute(attrlist) __attribute__(attrlist)
673 #define ecb_is_constant(expr) __builtin_constant_p (expr)
674 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
675 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
676#else
677 #define ecb_attribute(attrlist)
678 #define ecb_is_constant(expr) 0
679 #define ecb_expect(expr,value) (expr)
680 #define ecb_prefetch(addr,rw,locality)
681#endif
682
683/* no emulation for ecb_decltype */
684#if ECB_GCC_VERSION(4,5)
685 #define ecb_decltype(x) __decltype(x)
686#elif ECB_GCC_VERSION(3,0)
687 #define ecb_decltype(x) __typeof(x)
688#endif
689
690#define ecb_noinline ecb_attribute ((__noinline__))
691#define ecb_noreturn ecb_attribute ((__noreturn__))
692#define ecb_unused ecb_attribute ((__unused__))
693#define ecb_const ecb_attribute ((__const__))
694#define ecb_pure ecb_attribute ((__pure__))
695
696#if ECB_GCC_VERSION(4,3)
697 #define ecb_artificial ecb_attribute ((__artificial__))
698 #define ecb_hot ecb_attribute ((__hot__))
699 #define ecb_cold ecb_attribute ((__cold__))
700#else
701 #define ecb_artificial
702 #define ecb_hot
703 #define ecb_cold
704#endif
705
706/* put around conditional expressions if you are very sure that the */
707/* expression is mostly true or mostly false. note that these return */
708/* booleans, not the expression. */
446#define expect_false(expr) expect ((expr) != 0, 0) 709#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
447#define expect_true(expr) expect ((expr) != 0, 1) 710#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
711/* for compatibility to the rest of the world */
712#define ecb_likely(expr) ecb_expect_true (expr)
713#define ecb_unlikely(expr) ecb_expect_false (expr)
714
715/* count trailing zero bits and count # of one bits */
716#if ECB_GCC_VERSION(3,4)
717 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
718 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
719 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
720 #define ecb_ctz32(x) __builtin_ctz (x)
721 #define ecb_ctz64(x) __builtin_ctzll (x)
722 #define ecb_popcount32(x) __builtin_popcount (x)
723 /* no popcountll */
724#else
725 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_ctz32 (uint32_t x)
728 {
729 int r = 0;
730
731 x &= ~x + 1; /* this isolates the lowest bit */
732
733#if ECB_branchless_on_i386
734 r += !!(x & 0xaaaaaaaa) << 0;
735 r += !!(x & 0xcccccccc) << 1;
736 r += !!(x & 0xf0f0f0f0) << 2;
737 r += !!(x & 0xff00ff00) << 3;
738 r += !!(x & 0xffff0000) << 4;
739#else
740 if (x & 0xaaaaaaaa) r += 1;
741 if (x & 0xcccccccc) r += 2;
742 if (x & 0xf0f0f0f0) r += 4;
743 if (x & 0xff00ff00) r += 8;
744 if (x & 0xffff0000) r += 16;
745#endif
746
747 return r;
748 }
749
750 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
751 ecb_function_ int
752 ecb_ctz64 (uint64_t x)
753 {
754 int shift = x & 0xffffffffU ? 0 : 32;
755 return ecb_ctz32 (x >> shift) + shift;
756 }
757
758 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
759 ecb_function_ int
760 ecb_popcount32 (uint32_t x)
761 {
762 x -= (x >> 1) & 0x55555555;
763 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
764 x = ((x >> 4) + x) & 0x0f0f0f0f;
765 x *= 0x01010101;
766
767 return x >> 24;
768 }
769
770 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
771 ecb_function_ int ecb_ld32 (uint32_t x)
772 {
773 int r = 0;
774
775 if (x >> 16) { x >>= 16; r += 16; }
776 if (x >> 8) { x >>= 8; r += 8; }
777 if (x >> 4) { x >>= 4; r += 4; }
778 if (x >> 2) { x >>= 2; r += 2; }
779 if (x >> 1) { r += 1; }
780
781 return r;
782 }
783
784 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
785 ecb_function_ int ecb_ld64 (uint64_t x)
786 {
787 int r = 0;
788
789 if (x >> 32) { x >>= 32; r += 32; }
790
791 return r + ecb_ld32 (x);
792 }
793#endif
794
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
796ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
797{
798 return ( (x * 0x0802U & 0x22110U)
799 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
800}
801
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
803ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
804{
805 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
806 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
807 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
808 x = ( x >> 8 ) | ( x << 8);
809
810 return x;
811}
812
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
814ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
815{
816 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
817 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
818 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
819 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
820 x = ( x >> 16 ) | ( x << 16);
821
822 return x;
823}
824
825/* popcount64 is only available on 64 bit cpus as gcc builtin */
826/* so for this version we are lazy */
827ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
828ecb_function_ int
829ecb_popcount64 (uint64_t x)
830{
831 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
832}
833
834ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
841ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
842
843ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
844ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
845ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
846ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
847ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
848ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
849ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
850ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
851
852#if ECB_GCC_VERSION(4,3)
853 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
854 #define ecb_bswap32(x) __builtin_bswap32 (x)
855 #define ecb_bswap64(x) __builtin_bswap64 (x)
856#else
857 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
858 ecb_function_ uint16_t
859 ecb_bswap16 (uint16_t x)
860 {
861 return ecb_rotl16 (x, 8);
862 }
863
864 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
865 ecb_function_ uint32_t
866 ecb_bswap32 (uint32_t x)
867 {
868 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
869 }
870
871 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
872 ecb_function_ uint64_t
873 ecb_bswap64 (uint64_t x)
874 {
875 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
876 }
877#endif
878
879#if ECB_GCC_VERSION(4,5)
880 #define ecb_unreachable() __builtin_unreachable ()
881#else
882 /* this seems to work fine, but gcc always emits a warning for it :/ */
883 ecb_inline void ecb_unreachable (void) ecb_noreturn;
884 ecb_inline void ecb_unreachable (void) { }
885#endif
886
887/* try to tell the compiler that some condition is definitely true */
888#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
889
890ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
891ecb_inline unsigned char
892ecb_byteorder_helper (void)
893{
894 const uint32_t u = 0x11223344;
895 return *(unsigned char *)&u;
896}
897
898ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
899ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
900ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
901ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
902
903#if ECB_GCC_VERSION(3,0) || ECB_C99
904 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
905#else
906 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
907#endif
908
909#if __cplusplus
910 template<typename T>
911 static inline T ecb_div_rd (T val, T div)
912 {
913 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
914 }
915 template<typename T>
916 static inline T ecb_div_ru (T val, T div)
917 {
918 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
919 }
920#else
921 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
922 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
923#endif
924
925#if ecb_cplusplus_does_not_suck
926 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
927 template<typename T, int N>
928 static inline int ecb_array_length (const T (&arr)[N])
929 {
930 return N;
931 }
932#else
933 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
934#endif
935
936#endif
937
938/* ECB.H END */
939
940#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
941/* if your architecture doesn't need memory fences, e.g. because it is
942 * single-cpu/core, or if you use libev in a project that doesn't use libev
943 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
944 * libev, in which cases the memory fences become nops.
945 * alternatively, you can remove this #error and link against libpthread,
946 * which will then provide the memory fences.
947 */
948# error "memory fences not defined for your architecture, please report"
949#endif
950
951#ifndef ECB_MEMORY_FENCE
952# define ECB_MEMORY_FENCE do { } while (0)
953# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
954# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
955#endif
956
957#define expect_false(cond) ecb_expect_false (cond)
958#define expect_true(cond) ecb_expect_true (cond)
959#define noinline ecb_noinline
960
448#define inline_size static inline 961#define inline_size ecb_inline
449 962
450#if EV_MINIMAL 963#if EV_FEATURE_CODE
964# define inline_speed ecb_inline
965#else
451# define inline_speed static noinline 966# define inline_speed static noinline
452#else
453# define inline_speed static inline
454#endif 967#endif
455 968
456#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 969#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
457 970
458#if EV_MINPRI == EV_MAXPRI 971#if EV_MINPRI == EV_MAXPRI
… …
471#define ev_active(w) ((W)(w))->active 984#define ev_active(w) ((W)(w))->active
472#define ev_at(w) ((WT)(w))->at 985#define ev_at(w) ((WT)(w))->at
473 986
474#if EV_USE_REALTIME 987#if EV_USE_REALTIME
475/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 988/* sig_atomic_t is used to avoid per-thread variables or locking but still */
476/* giving it a reasonably high chance of working on typical architetcures */ 989/* giving it a reasonably high chance of working on typical architectures */
477static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 990static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
478#endif 991#endif
479 992
480#if EV_USE_MONOTONIC 993#if EV_USE_MONOTONIC
481static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 994static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
482#endif 995#endif
483 996
997#ifndef EV_FD_TO_WIN32_HANDLE
998# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
999#endif
1000#ifndef EV_WIN32_HANDLE_TO_FD
1001# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1002#endif
1003#ifndef EV_WIN32_CLOSE_FD
1004# define EV_WIN32_CLOSE_FD(fd) close (fd)
1005#endif
1006
484#ifdef _WIN32 1007#ifdef _WIN32
485# include "ev_win32.c" 1008# include "ev_win32.c"
486#endif 1009#endif
487 1010
488/*****************************************************************************/ 1011/*****************************************************************************/
489 1012
1013/* define a suitable floor function (only used by periodics atm) */
1014
1015#if EV_USE_FLOOR
1016# include <math.h>
1017# define ev_floor(v) floor (v)
1018#else
1019
1020#include <float.h>
1021
1022/* a floor() replacement function, should be independent of ev_tstamp type */
1023static ev_tstamp noinline
1024ev_floor (ev_tstamp v)
1025{
1026 /* the choice of shift factor is not terribly important */
1027#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1028 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1029#else
1030 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1031#endif
1032
1033 /* argument too large for an unsigned long? */
1034 if (expect_false (v >= shift))
1035 {
1036 ev_tstamp f;
1037
1038 if (v == v - 1.)
1039 return v; /* very large number */
1040
1041 f = shift * ev_floor (v * (1. / shift));
1042 return f + ev_floor (v - f);
1043 }
1044
1045 /* special treatment for negative args? */
1046 if (expect_false (v < 0.))
1047 {
1048 ev_tstamp f = -ev_floor (-v);
1049
1050 return f - (f == v ? 0 : 1);
1051 }
1052
1053 /* fits into an unsigned long */
1054 return (unsigned long)v;
1055}
1056
1057#endif
1058
1059/*****************************************************************************/
1060
1061#ifdef __linux
1062# include <sys/utsname.h>
1063#endif
1064
1065static unsigned int noinline ecb_cold
1066ev_linux_version (void)
1067{
1068#ifdef __linux
1069 unsigned int v = 0;
1070 struct utsname buf;
1071 int i;
1072 char *p = buf.release;
1073
1074 if (uname (&buf))
1075 return 0;
1076
1077 for (i = 3+1; --i; )
1078 {
1079 unsigned int c = 0;
1080
1081 for (;;)
1082 {
1083 if (*p >= '0' && *p <= '9')
1084 c = c * 10 + *p++ - '0';
1085 else
1086 {
1087 p += *p == '.';
1088 break;
1089 }
1090 }
1091
1092 v = (v << 8) | c;
1093 }
1094
1095 return v;
1096#else
1097 return 0;
1098#endif
1099}
1100
1101/*****************************************************************************/
1102
1103#if EV_AVOID_STDIO
1104static void noinline ecb_cold
1105ev_printerr (const char *msg)
1106{
1107 write (STDERR_FILENO, msg, strlen (msg));
1108}
1109#endif
1110
490static void (*syserr_cb)(const char *msg); 1111static void (*syserr_cb)(const char *msg) EV_THROW;
491 1112
492void 1113void ecb_cold
493ev_set_syserr_cb (void (*cb)(const char *msg)) 1114ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
494{ 1115{
495 syserr_cb = cb; 1116 syserr_cb = cb;
496} 1117}
497 1118
498static void noinline 1119static void noinline ecb_cold
499ev_syserr (const char *msg) 1120ev_syserr (const char *msg)
500{ 1121{
501 if (!msg) 1122 if (!msg)
502 msg = "(libev) system error"; 1123 msg = "(libev) system error";
503 1124
504 if (syserr_cb) 1125 if (syserr_cb)
505 syserr_cb (msg); 1126 syserr_cb (msg);
506 else 1127 else
507 { 1128 {
1129#if EV_AVOID_STDIO
1130 ev_printerr (msg);
1131 ev_printerr (": ");
1132 ev_printerr (strerror (errno));
1133 ev_printerr ("\n");
1134#else
508 perror (msg); 1135 perror (msg);
1136#endif
509 abort (); 1137 abort ();
510 } 1138 }
511} 1139}
512 1140
513static void * 1141static void *
514ev_realloc_emul (void *ptr, long size) 1142ev_realloc_emul (void *ptr, long size)
515{ 1143{
1144#if __GLIBC__
1145 return realloc (ptr, size);
1146#else
516 /* some systems, notably openbsd and darwin, fail to properly 1147 /* some systems, notably openbsd and darwin, fail to properly
517 * implement realloc (x, 0) (as required by both ansi c-98 and 1148 * implement realloc (x, 0) (as required by both ansi c-89 and
518 * the single unix specification, so work around them here. 1149 * the single unix specification, so work around them here.
519 */ 1150 */
520 1151
521 if (size) 1152 if (size)
522 return realloc (ptr, size); 1153 return realloc (ptr, size);
523 1154
524 free (ptr); 1155 free (ptr);
525 return 0; 1156 return 0;
1157#endif
526} 1158}
527 1159
528static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1160static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
529 1161
530void 1162void ecb_cold
531ev_set_allocator (void *(*cb)(void *ptr, long size)) 1163ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
532{ 1164{
533 alloc = cb; 1165 alloc = cb;
534} 1166}
535 1167
536inline_speed void * 1168inline_speed void *
… …
538{ 1170{
539 ptr = alloc (ptr, size); 1171 ptr = alloc (ptr, size);
540 1172
541 if (!ptr && size) 1173 if (!ptr && size)
542 { 1174 {
1175#if EV_AVOID_STDIO
1176 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1177#else
543 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1178 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1179#endif
544 abort (); 1180 abort ();
545 } 1181 }
546 1182
547 return ptr; 1183 return ptr;
548} 1184}
… …
564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1200 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
565 unsigned char unused; 1201 unsigned char unused;
566#if EV_USE_EPOLL 1202#if EV_USE_EPOLL
567 unsigned int egen; /* generation counter to counter epoll bugs */ 1203 unsigned int egen; /* generation counter to counter epoll bugs */
568#endif 1204#endif
569#if EV_SELECT_IS_WINSOCKET 1205#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
570 SOCKET handle; 1206 SOCKET handle;
1207#endif
1208#if EV_USE_IOCP
1209 OVERLAPPED or, ow;
571#endif 1210#endif
572} ANFD; 1211} ANFD;
573 1212
574/* stores the pending event set for a given watcher */ 1213/* stores the pending event set for a given watcher */
575typedef struct 1214typedef struct
… …
617 #undef VAR 1256 #undef VAR
618 }; 1257 };
619 #include "ev_wrap.h" 1258 #include "ev_wrap.h"
620 1259
621 static struct ev_loop default_loop_struct; 1260 static struct ev_loop default_loop_struct;
622 struct ev_loop *ev_default_loop_ptr; 1261 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
623 1262
624#else 1263#else
625 1264
626 ev_tstamp ev_rt_now; 1265 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
627 #define VAR(name,decl) static decl; 1266 #define VAR(name,decl) static decl;
628 #include "ev_vars.h" 1267 #include "ev_vars.h"
629 #undef VAR 1268 #undef VAR
630 1269
631 static int ev_default_loop_ptr; 1270 static int ev_default_loop_ptr;
632 1271
633#endif 1272#endif
634 1273
635#if EV_MINIMAL < 2 1274#if EV_FEATURE_API
636# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1275# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
637# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1276# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
638# define EV_INVOKE_PENDING invoke_cb (EV_A) 1277# define EV_INVOKE_PENDING invoke_cb (EV_A)
639#else 1278#else
640# define EV_RELEASE_CB (void)0 1279# define EV_RELEASE_CB (void)0
641# define EV_ACQUIRE_CB (void)0 1280# define EV_ACQUIRE_CB (void)0
642# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1281# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
643#endif 1282#endif
644 1283
645#define EVUNLOOP_RECURSE 0x80 1284#define EVBREAK_RECURSE 0x80
646 1285
647/*****************************************************************************/ 1286/*****************************************************************************/
648 1287
649#ifndef EV_HAVE_EV_TIME 1288#ifndef EV_HAVE_EV_TIME
650ev_tstamp 1289ev_tstamp
651ev_time (void) 1290ev_time (void) EV_THROW
652{ 1291{
653#if EV_USE_REALTIME 1292#if EV_USE_REALTIME
654 if (expect_true (have_realtime)) 1293 if (expect_true (have_realtime))
655 { 1294 {
656 struct timespec ts; 1295 struct timespec ts;
… …
680 return ev_time (); 1319 return ev_time ();
681} 1320}
682 1321
683#if EV_MULTIPLICITY 1322#if EV_MULTIPLICITY
684ev_tstamp 1323ev_tstamp
685ev_now (EV_P) 1324ev_now (EV_P) EV_THROW
686{ 1325{
687 return ev_rt_now; 1326 return ev_rt_now;
688} 1327}
689#endif 1328#endif
690 1329
691void 1330void
692ev_sleep (ev_tstamp delay) 1331ev_sleep (ev_tstamp delay) EV_THROW
693{ 1332{
694 if (delay > 0.) 1333 if (delay > 0.)
695 { 1334 {
696#if EV_USE_NANOSLEEP 1335#if EV_USE_NANOSLEEP
697 struct timespec ts; 1336 struct timespec ts;
698 1337
699 ts.tv_sec = (time_t)delay; 1338 EV_TS_SET (ts, delay);
700 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
701
702 nanosleep (&ts, 0); 1339 nanosleep (&ts, 0);
703#elif defined(_WIN32) 1340#elif defined _WIN32
704 Sleep ((unsigned long)(delay * 1e3)); 1341 Sleep ((unsigned long)(delay * 1e3));
705#else 1342#else
706 struct timeval tv; 1343 struct timeval tv;
707 1344
708 tv.tv_sec = (time_t)delay;
709 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
710
711 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1345 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
712 /* something not guaranteed by newer posix versions, but guaranteed */ 1346 /* something not guaranteed by newer posix versions, but guaranteed */
713 /* by older ones */ 1347 /* by older ones */
1348 EV_TV_SET (tv, delay);
714 select (0, 0, 0, 0, &tv); 1349 select (0, 0, 0, 0, &tv);
715#endif 1350#endif
716 } 1351 }
717} 1352}
718 1353
719/*****************************************************************************/ 1354/*****************************************************************************/
720 1355
721#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1356#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
722 1357
723/* find a suitable new size for the given array, */ 1358/* find a suitable new size for the given array, */
724/* hopefully by rounding to a ncie-to-malloc size */ 1359/* hopefully by rounding to a nice-to-malloc size */
725inline_size int 1360inline_size int
726array_nextsize (int elem, int cur, int cnt) 1361array_nextsize (int elem, int cur, int cnt)
727{ 1362{
728 int ncur = cur + 1; 1363 int ncur = cur + 1;
729 1364
730 do 1365 do
731 ncur <<= 1; 1366 ncur <<= 1;
732 while (cnt > ncur); 1367 while (cnt > ncur);
733 1368
734 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1369 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
735 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1370 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
736 { 1371 {
737 ncur *= elem; 1372 ncur *= elem;
738 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1373 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
739 ncur = ncur - sizeof (void *) * 4; 1374 ncur = ncur - sizeof (void *) * 4;
… …
741 } 1376 }
742 1377
743 return ncur; 1378 return ncur;
744} 1379}
745 1380
746static noinline void * 1381static void * noinline ecb_cold
747array_realloc (int elem, void *base, int *cur, int cnt) 1382array_realloc (int elem, void *base, int *cur, int cnt)
748{ 1383{
749 *cur = array_nextsize (elem, *cur, cnt); 1384 *cur = array_nextsize (elem, *cur, cnt);
750 return ev_realloc (base, elem * *cur); 1385 return ev_realloc (base, elem * *cur);
751} 1386}
… …
754 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1389 memset ((void *)(base), 0, sizeof (*(base)) * (count))
755 1390
756#define array_needsize(type,base,cur,cnt,init) \ 1391#define array_needsize(type,base,cur,cnt,init) \
757 if (expect_false ((cnt) > (cur))) \ 1392 if (expect_false ((cnt) > (cur))) \
758 { \ 1393 { \
759 int ocur_ = (cur); \ 1394 int ecb_unused ocur_ = (cur); \
760 (base) = (type *)array_realloc \ 1395 (base) = (type *)array_realloc \
761 (sizeof (type), (base), &(cur), (cnt)); \ 1396 (sizeof (type), (base), &(cur), (cnt)); \
762 init ((base) + (ocur_), (cur) - ocur_); \ 1397 init ((base) + (ocur_), (cur) - ocur_); \
763 } 1398 }
764 1399
… …
782pendingcb (EV_P_ ev_prepare *w, int revents) 1417pendingcb (EV_P_ ev_prepare *w, int revents)
783{ 1418{
784} 1419}
785 1420
786void noinline 1421void noinline
787ev_feed_event (EV_P_ void *w, int revents) 1422ev_feed_event (EV_P_ void *w, int revents) EV_THROW
788{ 1423{
789 W w_ = (W)w; 1424 W w_ = (W)w;
790 int pri = ABSPRI (w_); 1425 int pri = ABSPRI (w_);
791 1426
792 if (expect_false (w_->pending)) 1427 if (expect_false (w_->pending))
… …
796 w_->pending = ++pendingcnt [pri]; 1431 w_->pending = ++pendingcnt [pri];
797 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1432 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
798 pendings [pri][w_->pending - 1].w = w_; 1433 pendings [pri][w_->pending - 1].w = w_;
799 pendings [pri][w_->pending - 1].events = revents; 1434 pendings [pri][w_->pending - 1].events = revents;
800 } 1435 }
1436
1437 pendingpri = NUMPRI - 1;
801} 1438}
802 1439
803inline_speed void 1440inline_speed void
804feed_reverse (EV_P_ W w) 1441feed_reverse (EV_P_ W w)
805{ 1442{
… …
825} 1462}
826 1463
827/*****************************************************************************/ 1464/*****************************************************************************/
828 1465
829inline_speed void 1466inline_speed void
830fd_event_nc (EV_P_ int fd, int revents) 1467fd_event_nocheck (EV_P_ int fd, int revents)
831{ 1468{
832 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
833 ev_io *w; 1470 ev_io *w;
834 1471
835 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1472 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
847fd_event (EV_P_ int fd, int revents) 1484fd_event (EV_P_ int fd, int revents)
848{ 1485{
849 ANFD *anfd = anfds + fd; 1486 ANFD *anfd = anfds + fd;
850 1487
851 if (expect_true (!anfd->reify)) 1488 if (expect_true (!anfd->reify))
852 fd_event_nc (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
853} 1490}
854 1491
855void 1492void
856ev_feed_fd_event (EV_P_ int fd, int revents) 1493ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
857{ 1494{
858 if (fd >= 0 && fd < anfdmax) 1495 if (fd >= 0 && fd < anfdmax)
859 fd_event_nc (EV_A_ fd, revents); 1496 fd_event_nocheck (EV_A_ fd, revents);
860} 1497}
861 1498
862/* make sure the external fd watch events are in-sync */ 1499/* make sure the external fd watch events are in-sync */
863/* with the kernel/libev internal state */ 1500/* with the kernel/libev internal state */
864inline_size void 1501inline_size void
865fd_reify (EV_P) 1502fd_reify (EV_P)
866{ 1503{
867 int i; 1504 int i;
868 1505
1506#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1507 for (i = 0; i < fdchangecnt; ++i)
1508 {
1509 int fd = fdchanges [i];
1510 ANFD *anfd = anfds + fd;
1511
1512 if (anfd->reify & EV__IOFDSET && anfd->head)
1513 {
1514 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1515
1516 if (handle != anfd->handle)
1517 {
1518 unsigned long arg;
1519
1520 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1521
1522 /* handle changed, but fd didn't - we need to do it in two steps */
1523 backend_modify (EV_A_ fd, anfd->events, 0);
1524 anfd->events = 0;
1525 anfd->handle = handle;
1526 }
1527 }
1528 }
1529#endif
1530
869 for (i = 0; i < fdchangecnt; ++i) 1531 for (i = 0; i < fdchangecnt; ++i)
870 { 1532 {
871 int fd = fdchanges [i]; 1533 int fd = fdchanges [i];
872 ANFD *anfd = anfds + fd; 1534 ANFD *anfd = anfds + fd;
873 ev_io *w; 1535 ev_io *w;
874 1536
875 unsigned char events = 0; 1537 unsigned char o_events = anfd->events;
1538 unsigned char o_reify = anfd->reify;
876 1539
877 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1540 anfd->reify = 0;
878 events |= (unsigned char)w->events;
879 1541
880#if EV_SELECT_IS_WINSOCKET 1542 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
881 if (events)
882 { 1543 {
883 unsigned long arg; 1544 anfd->events = 0;
884 #ifdef EV_FD_TO_WIN32_HANDLE 1545
885 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1546 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
886 #else 1547 anfd->events |= (unsigned char)w->events;
887 anfd->handle = _get_osfhandle (fd); 1548
888 #endif 1549 if (o_events != anfd->events)
889 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1550 o_reify = EV__IOFDSET; /* actually |= */
890 } 1551 }
891#endif
892 1552
893 { 1553 if (o_reify & EV__IOFDSET)
894 unsigned char o_events = anfd->events;
895 unsigned char o_reify = anfd->reify;
896
897 anfd->reify = 0;
898 anfd->events = events;
899
900 if (o_events != events || o_reify & EV__IOFDSET)
901 backend_modify (EV_A_ fd, o_events, events); 1554 backend_modify (EV_A_ fd, o_events, anfd->events);
902 }
903 } 1555 }
904 1556
905 fdchangecnt = 0; 1557 fdchangecnt = 0;
906} 1558}
907 1559
… …
919 fdchanges [fdchangecnt - 1] = fd; 1571 fdchanges [fdchangecnt - 1] = fd;
920 } 1572 }
921} 1573}
922 1574
923/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1575/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
924inline_speed void 1576inline_speed void ecb_cold
925fd_kill (EV_P_ int fd) 1577fd_kill (EV_P_ int fd)
926{ 1578{
927 ev_io *w; 1579 ev_io *w;
928 1580
929 while ((w = (ev_io *)anfds [fd].head)) 1581 while ((w = (ev_io *)anfds [fd].head))
… …
931 ev_io_stop (EV_A_ w); 1583 ev_io_stop (EV_A_ w);
932 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1584 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
933 } 1585 }
934} 1586}
935 1587
936/* check whether the given fd is atcually valid, for error recovery */ 1588/* check whether the given fd is actually valid, for error recovery */
937inline_size int 1589inline_size int ecb_cold
938fd_valid (int fd) 1590fd_valid (int fd)
939{ 1591{
940#ifdef _WIN32 1592#ifdef _WIN32
941 return _get_osfhandle (fd) != -1; 1593 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942#else 1594#else
943 return fcntl (fd, F_GETFD) != -1; 1595 return fcntl (fd, F_GETFD) != -1;
944#endif 1596#endif
945} 1597}
946 1598
947/* called on EBADF to verify fds */ 1599/* called on EBADF to verify fds */
948static void noinline 1600static void noinline ecb_cold
949fd_ebadf (EV_P) 1601fd_ebadf (EV_P)
950{ 1602{
951 int fd; 1603 int fd;
952 1604
953 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
… …
955 if (!fd_valid (fd) && errno == EBADF) 1607 if (!fd_valid (fd) && errno == EBADF)
956 fd_kill (EV_A_ fd); 1608 fd_kill (EV_A_ fd);
957} 1609}
958 1610
959/* called on ENOMEM in select/poll to kill some fds and retry */ 1611/* called on ENOMEM in select/poll to kill some fds and retry */
960static void noinline 1612static void noinline ecb_cold
961fd_enomem (EV_P) 1613fd_enomem (EV_P)
962{ 1614{
963 int fd; 1615 int fd;
964 1616
965 for (fd = anfdmax; fd--; ) 1617 for (fd = anfdmax; fd--; )
966 if (anfds [fd].events) 1618 if (anfds [fd].events)
967 { 1619 {
968 fd_kill (EV_A_ fd); 1620 fd_kill (EV_A_ fd);
969 return; 1621 break;
970 } 1622 }
971} 1623}
972 1624
973/* usually called after fork if backend needs to re-arm all fds from scratch */ 1625/* usually called after fork if backend needs to re-arm all fds from scratch */
974static void noinline 1626static void noinline
… …
983 anfds [fd].emask = 0; 1635 anfds [fd].emask = 0;
984 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1636 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
985 } 1637 }
986} 1638}
987 1639
1640/* used to prepare libev internal fd's */
1641/* this is not fork-safe */
1642inline_speed void
1643fd_intern (int fd)
1644{
1645#ifdef _WIN32
1646 unsigned long arg = 1;
1647 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1648#else
1649 fcntl (fd, F_SETFD, FD_CLOEXEC);
1650 fcntl (fd, F_SETFL, O_NONBLOCK);
1651#endif
1652}
1653
988/*****************************************************************************/ 1654/*****************************************************************************/
989 1655
990/* 1656/*
991 * the heap functions want a real array index. array index 0 uis guaranteed to not 1657 * the heap functions want a real array index. array index 0 is guaranteed to not
992 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1658 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
993 * the branching factor of the d-tree. 1659 * the branching factor of the d-tree.
994 */ 1660 */
995 1661
996/* 1662/*
… …
1064 1730
1065 for (;;) 1731 for (;;)
1066 { 1732 {
1067 int c = k << 1; 1733 int c = k << 1;
1068 1734
1069 if (c > N + HEAP0 - 1) 1735 if (c >= N + HEAP0)
1070 break; 1736 break;
1071 1737
1072 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1738 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073 ? 1 : 0; 1739 ? 1 : 0;
1074 1740
… …
1110 1776
1111/* move an element suitably so it is in a correct place */ 1777/* move an element suitably so it is in a correct place */
1112inline_size void 1778inline_size void
1113adjustheap (ANHE *heap, int N, int k) 1779adjustheap (ANHE *heap, int N, int k)
1114{ 1780{
1115 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1781 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116 upheap (heap, k); 1782 upheap (heap, k);
1117 else 1783 else
1118 downheap (heap, N, k); 1784 downheap (heap, N, k);
1119} 1785}
1120 1786
… …
1133/*****************************************************************************/ 1799/*****************************************************************************/
1134 1800
1135/* associate signal watchers to a signal signal */ 1801/* associate signal watchers to a signal signal */
1136typedef struct 1802typedef struct
1137{ 1803{
1804 EV_ATOMIC_T pending;
1805#if EV_MULTIPLICITY
1806 EV_P;
1807#endif
1138 WL head; 1808 WL head;
1139 EV_ATOMIC_T gotsig;
1140} ANSIG; 1809} ANSIG;
1141 1810
1142static ANSIG *signals; 1811static ANSIG signals [EV_NSIG - 1];
1143static int signalmax;
1144
1145static EV_ATOMIC_T gotsig;
1146 1812
1147/*****************************************************************************/ 1813/*****************************************************************************/
1148 1814
1149/* used to prepare libev internal fd's */ 1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1150/* this is not fork-safe */
1151inline_speed void
1152fd_intern (int fd)
1153{
1154#ifdef _WIN32
1155 unsigned long arg = 1;
1156 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1157#else
1158 fcntl (fd, F_SETFD, FD_CLOEXEC);
1159 fcntl (fd, F_SETFL, O_NONBLOCK);
1160#endif
1161}
1162 1816
1163static void noinline 1817static void noinline ecb_cold
1164evpipe_init (EV_P) 1818evpipe_init (EV_P)
1165{ 1819{
1166 if (!ev_is_active (&pipe_w)) 1820 if (!ev_is_active (&pipe_w))
1167 { 1821 {
1168#if EV_USE_EVENTFD 1822# if EV_USE_EVENTFD
1169 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1823 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1170 if (evfd < 0 && errno == EINVAL) 1824 if (evfd < 0 && errno == EINVAL)
1171 evfd = eventfd (0, 0); 1825 evfd = eventfd (0, 0);
1172 1826
1173 if (evfd >= 0) 1827 if (evfd >= 0)
… …
1175 evpipe [0] = -1; 1829 evpipe [0] = -1;
1176 fd_intern (evfd); /* doing it twice doesn't hurt */ 1830 fd_intern (evfd); /* doing it twice doesn't hurt */
1177 ev_io_set (&pipe_w, evfd, EV_READ); 1831 ev_io_set (&pipe_w, evfd, EV_READ);
1178 } 1832 }
1179 else 1833 else
1180#endif 1834# endif
1181 { 1835 {
1182 while (pipe (evpipe)) 1836 while (pipe (evpipe))
1183 ev_syserr ("(libev) error creating signal/async pipe"); 1837 ev_syserr ("(libev) error creating signal/async pipe");
1184 1838
1185 fd_intern (evpipe [0]); 1839 fd_intern (evpipe [0]);
… …
1190 ev_io_start (EV_A_ &pipe_w); 1844 ev_io_start (EV_A_ &pipe_w);
1191 ev_unref (EV_A); /* watcher should not keep loop alive */ 1845 ev_unref (EV_A); /* watcher should not keep loop alive */
1192 } 1846 }
1193} 1847}
1194 1848
1195inline_size void 1849inline_speed void
1196evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1850evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1197{ 1851{
1198 if (!*flag) 1852 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1853
1854 if (expect_true (*flag))
1855 return;
1856
1857 *flag = 1;
1858
1859 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1860
1861 pipe_write_skipped = 1;
1862
1863 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1864
1865 if (pipe_write_wanted)
1199 { 1866 {
1867 int old_errno;
1868
1869 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1870
1200 int old_errno = errno; /* save errno because write might clobber it */ 1871 old_errno = errno; /* save errno because write will clobber it */
1201
1202 *flag = 1;
1203 1872
1204#if EV_USE_EVENTFD 1873#if EV_USE_EVENTFD
1205 if (evfd >= 0) 1874 if (evfd >= 0)
1206 { 1875 {
1207 uint64_t counter = 1; 1876 uint64_t counter = 1;
1208 write (evfd, &counter, sizeof (uint64_t)); 1877 write (evfd, &counter, sizeof (uint64_t));
1209 } 1878 }
1210 else 1879 else
1211#endif 1880#endif
1881 {
1882#ifdef _WIN32
1883 WSABUF buf;
1884 DWORD sent;
1885 buf.buf = &buf;
1886 buf.len = 1;
1887 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1888#else
1212 write (evpipe [1], &old_errno, 1); 1889 write (evpipe [1], &(evpipe [1]), 1);
1890#endif
1891 }
1213 1892
1214 errno = old_errno; 1893 errno = old_errno;
1215 } 1894 }
1216} 1895}
1217 1896
1218/* called whenever the libev signal pipe */ 1897/* called whenever the libev signal pipe */
1219/* got some events (signal, async) */ 1898/* got some events (signal, async) */
1220static void 1899static void
1221pipecb (EV_P_ ev_io *iow, int revents) 1900pipecb (EV_P_ ev_io *iow, int revents)
1222{ 1901{
1902 int i;
1903
1904 if (revents & EV_READ)
1905 {
1223#if EV_USE_EVENTFD 1906#if EV_USE_EVENTFD
1224 if (evfd >= 0) 1907 if (evfd >= 0)
1225 { 1908 {
1226 uint64_t counter; 1909 uint64_t counter;
1227 read (evfd, &counter, sizeof (uint64_t)); 1910 read (evfd, &counter, sizeof (uint64_t));
1228 } 1911 }
1229 else 1912 else
1230#endif 1913#endif
1231 { 1914 {
1232 char dummy; 1915 char dummy[4];
1916#ifdef _WIN32
1917 WSABUF buf;
1918 DWORD recvd;
1919 buf.buf = dummy;
1920 buf.len = sizeof (dummy);
1921 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1922#else
1233 read (evpipe [0], &dummy, 1); 1923 read (evpipe [0], &dummy, sizeof (dummy));
1924#endif
1925 }
1926 }
1927
1928 pipe_write_skipped = 0;
1929
1930 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1931
1932#if EV_SIGNAL_ENABLE
1933 if (sig_pending)
1234 } 1934 {
1935 sig_pending = 0;
1235 1936
1236 if (gotsig && ev_is_default_loop (EV_A)) 1937 ECB_MEMORY_FENCE_RELEASE;
1237 {
1238 int signum;
1239 gotsig = 0;
1240 1938
1241 for (signum = signalmax; signum--; ) 1939 for (i = EV_NSIG - 1; i--; )
1242 if (signals [signum].gotsig) 1940 if (expect_false (signals [i].pending))
1243 ev_feed_signal_event (EV_A_ signum + 1); 1941 ev_feed_signal_event (EV_A_ i + 1);
1244 } 1942 }
1943#endif
1245 1944
1246#if EV_ASYNC_ENABLE 1945#if EV_ASYNC_ENABLE
1247 if (gotasync) 1946 if (async_pending)
1248 { 1947 {
1249 int i; 1948 async_pending = 0;
1250 gotasync = 0; 1949
1950 ECB_MEMORY_FENCE_RELEASE;
1251 1951
1252 for (i = asynccnt; i--; ) 1952 for (i = asynccnt; i--; )
1253 if (asyncs [i]->sent) 1953 if (asyncs [i]->sent)
1254 { 1954 {
1255 asyncs [i]->sent = 0; 1955 asyncs [i]->sent = 0;
… …
1259#endif 1959#endif
1260} 1960}
1261 1961
1262/*****************************************************************************/ 1962/*****************************************************************************/
1263 1963
1964void
1965ev_feed_signal (int signum) EV_THROW
1966{
1967#if EV_MULTIPLICITY
1968 EV_P = signals [signum - 1].loop;
1969
1970 if (!EV_A)
1971 return;
1972#endif
1973
1974 if (!ev_active (&pipe_w))
1975 return;
1976
1977 signals [signum - 1].pending = 1;
1978 evpipe_write (EV_A_ &sig_pending);
1979}
1980
1264static void 1981static void
1265ev_sighandler (int signum) 1982ev_sighandler (int signum)
1266{ 1983{
1984#ifdef _WIN32
1985 signal (signum, ev_sighandler);
1986#endif
1987
1988 ev_feed_signal (signum);
1989}
1990
1991void noinline
1992ev_feed_signal_event (EV_P_ int signum) EV_THROW
1993{
1994 WL w;
1995
1996 if (expect_false (signum <= 0 || signum > EV_NSIG))
1997 return;
1998
1999 --signum;
2000
1267#if EV_MULTIPLICITY 2001#if EV_MULTIPLICITY
1268 struct ev_loop *loop = &default_loop_struct; 2002 /* it is permissible to try to feed a signal to the wrong loop */
1269#endif 2003 /* or, likely more useful, feeding a signal nobody is waiting for */
1270 2004
1271#if _WIN32 2005 if (expect_false (signals [signum].loop != EV_A))
1272 signal (signum, ev_sighandler);
1273#endif
1274
1275 signals [signum - 1].gotsig = 1;
1276 evpipe_write (EV_A_ &gotsig);
1277}
1278
1279void noinline
1280ev_feed_signal_event (EV_P_ int signum)
1281{
1282 WL w;
1283
1284#if EV_MULTIPLICITY
1285 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1286#endif
1287
1288 --signum;
1289
1290 if (signum < 0 || signum >= signalmax)
1291 return; 2006 return;
2007#endif
1292 2008
1293 signals [signum].gotsig = 0; 2009 signals [signum].pending = 0;
1294 2010
1295 for (w = signals [signum].head; w; w = w->next) 2011 for (w = signals [signum].head; w; w = w->next)
1296 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2012 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297} 2013}
1298 2014
1299#if EV_USE_SIGNALFD 2015#if EV_USE_SIGNALFD
1300static void 2016static void
1301sigfdcb (EV_P_ ev_io *iow, int revents) 2017sigfdcb (EV_P_ ev_io *iow, int revents)
1302{ 2018{
1303 struct signalfd_siginfo si[4], *sip; 2019 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1304 2020
1305 for (;;) 2021 for (;;)
1306 { 2022 {
1307 ssize_t res = read (sigfd, si, sizeof (si)); 2023 ssize_t res = read (sigfd, si, sizeof (si));
1308 2024
… …
1314 break; 2030 break;
1315 } 2031 }
1316} 2032}
1317#endif 2033#endif
1318 2034
2035#endif
2036
1319/*****************************************************************************/ 2037/*****************************************************************************/
1320 2038
2039#if EV_CHILD_ENABLE
1321static WL childs [EV_PID_HASHSIZE]; 2040static WL childs [EV_PID_HASHSIZE];
1322
1323#ifndef _WIN32
1324 2041
1325static ev_signal childev; 2042static ev_signal childev;
1326 2043
1327#ifndef WIFCONTINUED 2044#ifndef WIFCONTINUED
1328# define WIFCONTINUED(status) 0 2045# define WIFCONTINUED(status) 0
… …
1333child_reap (EV_P_ int chain, int pid, int status) 2050child_reap (EV_P_ int chain, int pid, int status)
1334{ 2051{
1335 ev_child *w; 2052 ev_child *w;
1336 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2053 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1337 2054
1338 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2055 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1339 { 2056 {
1340 if ((w->pid == pid || !w->pid) 2057 if ((w->pid == pid || !w->pid)
1341 && (!traced || (w->flags & 1))) 2058 && (!traced || (w->flags & 1)))
1342 { 2059 {
1343 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2060 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1368 /* make sure we are called again until all children have been reaped */ 2085 /* make sure we are called again until all children have been reaped */
1369 /* we need to do it this way so that the callback gets called before we continue */ 2086 /* we need to do it this way so that the callback gets called before we continue */
1370 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2087 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1371 2088
1372 child_reap (EV_A_ pid, pid, status); 2089 child_reap (EV_A_ pid, pid, status);
1373 if (EV_PID_HASHSIZE > 1) 2090 if ((EV_PID_HASHSIZE) > 1)
1374 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2091 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1375} 2092}
1376 2093
1377#endif 2094#endif
1378 2095
1379/*****************************************************************************/ 2096/*****************************************************************************/
1380 2097
2098#if EV_USE_IOCP
2099# include "ev_iocp.c"
2100#endif
1381#if EV_USE_PORT 2101#if EV_USE_PORT
1382# include "ev_port.c" 2102# include "ev_port.c"
1383#endif 2103#endif
1384#if EV_USE_KQUEUE 2104#if EV_USE_KQUEUE
1385# include "ev_kqueue.c" 2105# include "ev_kqueue.c"
… …
1392#endif 2112#endif
1393#if EV_USE_SELECT 2113#if EV_USE_SELECT
1394# include "ev_select.c" 2114# include "ev_select.c"
1395#endif 2115#endif
1396 2116
1397int 2117int ecb_cold
1398ev_version_major (void) 2118ev_version_major (void) EV_THROW
1399{ 2119{
1400 return EV_VERSION_MAJOR; 2120 return EV_VERSION_MAJOR;
1401} 2121}
1402 2122
1403int 2123int ecb_cold
1404ev_version_minor (void) 2124ev_version_minor (void) EV_THROW
1405{ 2125{
1406 return EV_VERSION_MINOR; 2126 return EV_VERSION_MINOR;
1407} 2127}
1408 2128
1409/* return true if we are running with elevated privileges and should ignore env variables */ 2129/* return true if we are running with elevated privileges and should ignore env variables */
1410int inline_size 2130int inline_size ecb_cold
1411enable_secure (void) 2131enable_secure (void)
1412{ 2132{
1413#ifdef _WIN32 2133#ifdef _WIN32
1414 return 0; 2134 return 0;
1415#else 2135#else
1416 return getuid () != geteuid () 2136 return getuid () != geteuid ()
1417 || getgid () != getegid (); 2137 || getgid () != getegid ();
1418#endif 2138#endif
1419} 2139}
1420 2140
1421unsigned int 2141unsigned int ecb_cold
1422ev_supported_backends (void) 2142ev_supported_backends (void) EV_THROW
1423{ 2143{
1424 unsigned int flags = 0; 2144 unsigned int flags = 0;
1425 2145
1426 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2146 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1427 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2147 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1430 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2150 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1431 2151
1432 return flags; 2152 return flags;
1433} 2153}
1434 2154
1435unsigned int 2155unsigned int ecb_cold
1436ev_recommended_backends (void) 2156ev_recommended_backends (void) EV_THROW
1437{ 2157{
1438 unsigned int flags = ev_supported_backends (); 2158 unsigned int flags = ev_supported_backends ();
1439 2159
1440#ifndef __NetBSD__ 2160#ifndef __NetBSD__
1441 /* kqueue is borked on everything but netbsd apparently */ 2161 /* kqueue is borked on everything but netbsd apparently */
… …
1445#ifdef __APPLE__ 2165#ifdef __APPLE__
1446 /* only select works correctly on that "unix-certified" platform */ 2166 /* only select works correctly on that "unix-certified" platform */
1447 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2167 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1448 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2168 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1449#endif 2169#endif
2170#ifdef __FreeBSD__
2171 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2172#endif
1450 2173
1451 return flags; 2174 return flags;
1452} 2175}
1453 2176
2177unsigned int ecb_cold
2178ev_embeddable_backends (void) EV_THROW
2179{
2180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2181
2182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2184 flags &= ~EVBACKEND_EPOLL;
2185
2186 return flags;
2187}
2188
1454unsigned int 2189unsigned int
1455ev_embeddable_backends (void) 2190ev_backend (EV_P) EV_THROW
1456{ 2191{
1457 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2192 return backend;
1458
1459 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1460 /* please fix it and tell me how to detect the fix */
1461 flags &= ~EVBACKEND_EPOLL;
1462
1463 return flags;
1464} 2193}
1465 2194
2195#if EV_FEATURE_API
1466unsigned int 2196unsigned int
1467ev_backend (EV_P) 2197ev_iteration (EV_P) EV_THROW
1468{ 2198{
1469 return backend; 2199 return loop_count;
1470} 2200}
1471 2201
1472#if EV_MINIMAL < 2
1473unsigned int 2202unsigned int
1474ev_loop_count (EV_P) 2203ev_depth (EV_P) EV_THROW
1475{
1476 return loop_count;
1477}
1478
1479unsigned int
1480ev_loop_depth (EV_P)
1481{ 2204{
1482 return loop_depth; 2205 return loop_depth;
1483} 2206}
1484 2207
1485void 2208void
1486ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2209ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1487{ 2210{
1488 io_blocktime = interval; 2211 io_blocktime = interval;
1489} 2212}
1490 2213
1491void 2214void
1492ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2215ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1493{ 2216{
1494 timeout_blocktime = interval; 2217 timeout_blocktime = interval;
1495} 2218}
1496 2219
1497void 2220void
1498ev_set_userdata (EV_P_ void *data) 2221ev_set_userdata (EV_P_ void *data) EV_THROW
1499{ 2222{
1500 userdata = data; 2223 userdata = data;
1501} 2224}
1502 2225
1503void * 2226void *
1504ev_userdata (EV_P) 2227ev_userdata (EV_P) EV_THROW
1505{ 2228{
1506 return userdata; 2229 return userdata;
1507} 2230}
1508 2231
2232void
1509void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2233ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1510{ 2234{
1511 invoke_cb = invoke_pending_cb; 2235 invoke_cb = invoke_pending_cb;
1512} 2236}
1513 2237
2238void
1514void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2239ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1515{ 2240{
1516 release_cb = release; 2241 release_cb = release;
1517 acquire_cb = acquire; 2242 acquire_cb = acquire;
1518} 2243}
1519#endif 2244#endif
1520 2245
1521/* initialise a loop structure, must be zero-initialised */ 2246/* initialise a loop structure, must be zero-initialised */
1522static void noinline 2247static void noinline ecb_cold
1523loop_init (EV_P_ unsigned int flags) 2248loop_init (EV_P_ unsigned int flags) EV_THROW
1524{ 2249{
1525 if (!backend) 2250 if (!backend)
1526 { 2251 {
2252 origflags = flags;
2253
1527#if EV_USE_REALTIME 2254#if EV_USE_REALTIME
1528 if (!have_realtime) 2255 if (!have_realtime)
1529 { 2256 {
1530 struct timespec ts; 2257 struct timespec ts;
1531 2258
… …
1542 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2269 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543 have_monotonic = 1; 2270 have_monotonic = 1;
1544 } 2271 }
1545#endif 2272#endif
1546 2273
1547 ev_rt_now = ev_time ();
1548 mn_now = get_clock ();
1549 now_floor = mn_now;
1550 rtmn_diff = ev_rt_now - mn_now;
1551#if EV_MINIMAL < 2
1552 invoke_cb = ev_invoke_pending;
1553#endif
1554
1555 io_blocktime = 0.;
1556 timeout_blocktime = 0.;
1557 backend = 0;
1558 backend_fd = -1;
1559 gotasync = 0;
1560#if EV_USE_INOTIFY
1561 fs_fd = -2;
1562#endif
1563#if EV_USE_SIGNALFD
1564 sigfd = -2;
1565#endif
1566
1567 /* pid check not overridable via env */ 2274 /* pid check not overridable via env */
1568#ifndef _WIN32 2275#ifndef _WIN32
1569 if (flags & EVFLAG_FORKCHECK) 2276 if (flags & EVFLAG_FORKCHECK)
1570 curpid = getpid (); 2277 curpid = getpid ();
1571#endif 2278#endif
… …
1573 if (!(flags & EVFLAG_NOENV) 2280 if (!(flags & EVFLAG_NOENV)
1574 && !enable_secure () 2281 && !enable_secure ()
1575 && getenv ("LIBEV_FLAGS")) 2282 && getenv ("LIBEV_FLAGS"))
1576 flags = atoi (getenv ("LIBEV_FLAGS")); 2283 flags = atoi (getenv ("LIBEV_FLAGS"));
1577 2284
1578 if (!(flags & 0x0000ffffU)) 2285 ev_rt_now = ev_time ();
2286 mn_now = get_clock ();
2287 now_floor = mn_now;
2288 rtmn_diff = ev_rt_now - mn_now;
2289#if EV_FEATURE_API
2290 invoke_cb = ev_invoke_pending;
2291#endif
2292
2293 io_blocktime = 0.;
2294 timeout_blocktime = 0.;
2295 backend = 0;
2296 backend_fd = -1;
2297 sig_pending = 0;
2298#if EV_ASYNC_ENABLE
2299 async_pending = 0;
2300#endif
2301 pipe_write_skipped = 0;
2302 pipe_write_wanted = 0;
2303#if EV_USE_INOTIFY
2304 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2305#endif
2306#if EV_USE_SIGNALFD
2307 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2308#endif
2309
2310 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2311 flags |= ev_recommended_backends ();
1580 2312
2313#if EV_USE_IOCP
2314 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2315#endif
1581#if EV_USE_PORT 2316#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2318#endif
1584#if EV_USE_KQUEUE 2319#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2329 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595#endif 2330#endif
1596 2331
1597 ev_prepare_init (&pending_w, pendingcb); 2332 ev_prepare_init (&pending_w, pendingcb);
1598 2333
2334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2335 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2336 ev_set_priority (&pipe_w, EV_MAXPRI);
2337#endif
1601 } 2338 }
1602} 2339}
1603 2340
1604/* free up a loop structure */ 2341/* free up a loop structure */
1605static void noinline 2342void ecb_cold
1606loop_destroy (EV_P) 2343ev_loop_destroy (EV_P)
1607{ 2344{
1608 int i; 2345 int i;
2346
2347#if EV_MULTIPLICITY
2348 /* mimic free (0) */
2349 if (!EV_A)
2350 return;
2351#endif
2352
2353#if EV_CLEANUP_ENABLE
2354 /* queue cleanup watchers (and execute them) */
2355 if (expect_false (cleanupcnt))
2356 {
2357 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2358 EV_INVOKE_PENDING;
2359 }
2360#endif
2361
2362#if EV_CHILD_ENABLE
2363 if (ev_is_active (&childev))
2364 {
2365 ev_ref (EV_A); /* child watcher */
2366 ev_signal_stop (EV_A_ &childev);
2367 }
2368#endif
1609 2369
1610 if (ev_is_active (&pipe_w)) 2370 if (ev_is_active (&pipe_w))
1611 { 2371 {
1612 /*ev_ref (EV_A);*/ 2372 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 2373 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1617 close (evfd); 2377 close (evfd);
1618#endif 2378#endif
1619 2379
1620 if (evpipe [0] >= 0) 2380 if (evpipe [0] >= 0)
1621 { 2381 {
1622 close (evpipe [0]); 2382 EV_WIN32_CLOSE_FD (evpipe [0]);
1623 close (evpipe [1]); 2383 EV_WIN32_CLOSE_FD (evpipe [1]);
1624 } 2384 }
1625 } 2385 }
1626 2386
1627#if EV_USE_SIGNALFD 2387#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 2388 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 2389 close (sigfd);
1634 }
1635#endif 2390#endif
1636 2391
1637#if EV_USE_INOTIFY 2392#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 2393 if (fs_fd >= 0)
1639 close (fs_fd); 2394 close (fs_fd);
1640#endif 2395#endif
1641 2396
1642 if (backend_fd >= 0) 2397 if (backend_fd >= 0)
1643 close (backend_fd); 2398 close (backend_fd);
1644 2399
2400#if EV_USE_IOCP
2401 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2402#endif
1645#if EV_USE_PORT 2403#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2404 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 2405#endif
1648#if EV_USE_KQUEUE 2406#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2407 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1676 array_free (periodic, EMPTY); 2434 array_free (periodic, EMPTY);
1677#endif 2435#endif
1678#if EV_FORK_ENABLE 2436#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 2437 array_free (fork, EMPTY);
1680#endif 2438#endif
2439#if EV_CLEANUP_ENABLE
2440 array_free (cleanup, EMPTY);
2441#endif
1681 array_free (prepare, EMPTY); 2442 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 2443 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 2444#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 2445 array_free (async, EMPTY);
1685#endif 2446#endif
1686 2447
1687 backend = 0; 2448 backend = 0;
2449
2450#if EV_MULTIPLICITY
2451 if (ev_is_default_loop (EV_A))
2452#endif
2453 ev_default_loop_ptr = 0;
2454#if EV_MULTIPLICITY
2455 else
2456 ev_free (EV_A);
2457#endif
1688} 2458}
1689 2459
1690#if EV_USE_INOTIFY 2460#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 2461inline_size void infy_fork (EV_P);
1692#endif 2462#endif
… …
1707 infy_fork (EV_A); 2477 infy_fork (EV_A);
1708#endif 2478#endif
1709 2479
1710 if (ev_is_active (&pipe_w)) 2480 if (ev_is_active (&pipe_w))
1711 { 2481 {
1712 /* this "locks" the handlers against writing to the pipe */ 2482 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 gotsig = 1;
1715#if EV_ASYNC_ENABLE
1716 gotasync = 1;
1717#endif
1718 2483
1719 ev_ref (EV_A); 2484 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 2485 ev_io_stop (EV_A_ &pipe_w);
1721 2486
1722#if EV_USE_EVENTFD 2487#if EV_USE_EVENTFD
… …
1724 close (evfd); 2489 close (evfd);
1725#endif 2490#endif
1726 2491
1727 if (evpipe [0] >= 0) 2492 if (evpipe [0] >= 0)
1728 { 2493 {
1729 close (evpipe [0]); 2494 EV_WIN32_CLOSE_FD (evpipe [0]);
1730 close (evpipe [1]); 2495 EV_WIN32_CLOSE_FD (evpipe [1]);
1731 } 2496 }
1732 2497
2498#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1733 evpipe_init (EV_A); 2499 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 2500 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 2501 pipecb (EV_A_ &pipe_w, EV_READ);
2502#endif
1736 } 2503 }
1737 2504
1738 postfork = 0; 2505 postfork = 0;
1739} 2506}
1740 2507
1741#if EV_MULTIPLICITY 2508#if EV_MULTIPLICITY
1742 2509
1743struct ev_loop * 2510struct ev_loop * ecb_cold
1744ev_loop_new (unsigned int flags) 2511ev_loop_new (unsigned int flags) EV_THROW
1745{ 2512{
1746 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2513 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 2514
1748 memset (loop, 0, sizeof (struct ev_loop)); 2515 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 2516 loop_init (EV_A_ flags);
1750 2517
1751 if (ev_backend (EV_A)) 2518 if (ev_backend (EV_A))
1752 return loop; 2519 return EV_A;
1753 2520
2521 ev_free (EV_A);
1754 return 0; 2522 return 0;
1755} 2523}
1756 2524
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 2525#endif /* multiplicity */
1770 2526
1771#if EV_VERIFY 2527#if EV_VERIFY
1772static void noinline 2528static void noinline ecb_cold
1773verify_watcher (EV_P_ W w) 2529verify_watcher (EV_P_ W w)
1774{ 2530{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2531 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 2532
1777 if (w->pending) 2533 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2534 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 2535}
1780 2536
1781static void noinline 2537static void noinline ecb_cold
1782verify_heap (EV_P_ ANHE *heap, int N) 2538verify_heap (EV_P_ ANHE *heap, int N)
1783{ 2539{
1784 int i; 2540 int i;
1785 2541
1786 for (i = HEAP0; i < N + HEAP0; ++i) 2542 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 2547
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2548 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 2549 }
1794} 2550}
1795 2551
1796static void noinline 2552static void noinline ecb_cold
1797array_verify (EV_P_ W *ws, int cnt) 2553array_verify (EV_P_ W *ws, int cnt)
1798{ 2554{
1799 while (cnt--) 2555 while (cnt--)
1800 { 2556 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2557 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 2558 verify_watcher (EV_A_ ws [cnt]);
1803 } 2559 }
1804} 2560}
1805#endif 2561#endif
1806 2562
1807#if EV_MINIMAL < 2 2563#if EV_FEATURE_API
1808void 2564void ecb_cold
1809ev_loop_verify (EV_P) 2565ev_verify (EV_P) EV_THROW
1810{ 2566{
1811#if EV_VERIFY 2567#if EV_VERIFY
1812 int i; 2568 int i;
1813 WL w; 2569 WL w, w2;
1814 2570
1815 assert (activecnt >= -1); 2571 assert (activecnt >= -1);
1816 2572
1817 assert (fdchangemax >= fdchangecnt); 2573 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 2574 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2575 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 2576
1821 assert (anfdmax >= 0); 2577 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 2578 for (i = 0; i < anfdmax; ++i)
2579 {
2580 int j = 0;
2581
1823 for (w = anfds [i].head; w; w = w->next) 2582 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 2583 {
1825 verify_watcher (EV_A_ (W)w); 2584 verify_watcher (EV_A_ (W)w);
2585
2586 if (j++ & 1)
2587 {
2588 assert (("libev: io watcher list contains a loop", w != w2));
2589 w2 = w2->next;
2590 }
2591
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2592 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1827 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2593 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 } 2594 }
2595 }
1829 2596
1830 assert (timermax >= timercnt); 2597 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 2598 verify_heap (EV_A_ timers, timercnt);
1832 2599
1833#if EV_PERIODIC_ENABLE 2600#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 2615#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 2616 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 2617 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 2618#endif
1852 2619
2620#if EV_CLEANUP_ENABLE
2621 assert (cleanupmax >= cleanupcnt);
2622 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2623#endif
2624
1853#if EV_ASYNC_ENABLE 2625#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 2626 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 2627 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 2628#endif
1857 2629
2630#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 2631 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 2632 array_verify (EV_A_ (W *)prepares, preparecnt);
2633#endif
1860 2634
2635#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 2636 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 2637 array_verify (EV_A_ (W *)checks, checkcnt);
2638#endif
1863 2639
1864# if 0 2640# if 0
2641#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2642 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2643 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2644#endif
1867# endif 2645# endif
1868#endif 2646#endif
1869} 2647}
1870#endif 2648#endif
1871 2649
1872#if EV_MULTIPLICITY 2650#if EV_MULTIPLICITY
1873struct ev_loop * 2651struct ev_loop * ecb_cold
1874ev_default_loop_init (unsigned int flags)
1875#else 2652#else
1876int 2653int
2654#endif
1877ev_default_loop (unsigned int flags) 2655ev_default_loop (unsigned int flags) EV_THROW
1878#endif
1879{ 2656{
1880 if (!ev_default_loop_ptr) 2657 if (!ev_default_loop_ptr)
1881 { 2658 {
1882#if EV_MULTIPLICITY 2659#if EV_MULTIPLICITY
1883 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2660 EV_P = ev_default_loop_ptr = &default_loop_struct;
1884#else 2661#else
1885 ev_default_loop_ptr = 1; 2662 ev_default_loop_ptr = 1;
1886#endif 2663#endif
1887 2664
1888 loop_init (EV_A_ flags); 2665 loop_init (EV_A_ flags);
1889 2666
1890 if (ev_backend (EV_A)) 2667 if (ev_backend (EV_A))
1891 { 2668 {
1892#ifndef _WIN32 2669#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 2670 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 2671 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 2672 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2673 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 2674#endif
… …
1902 2679
1903 return ev_default_loop_ptr; 2680 return ev_default_loop_ptr;
1904} 2681}
1905 2682
1906void 2683void
1907ev_default_destroy (void) 2684ev_loop_fork (EV_P) EV_THROW
1908{ 2685{
1909#if EV_MULTIPLICITY
1910 struct ev_loop *loop = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 struct ev_loop *loop = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */ 2686 postfork = 1; /* must be in line with ev_default_fork */
1931} 2687}
1932 2688
1933/*****************************************************************************/ 2689/*****************************************************************************/
1934 2690
1935void 2691void
… …
1937{ 2693{
1938 EV_CB_INVOKE ((W)w, revents); 2694 EV_CB_INVOKE ((W)w, revents);
1939} 2695}
1940 2696
1941unsigned int 2697unsigned int
1942ev_pending_count (EV_P) 2698ev_pending_count (EV_P) EV_THROW
1943{ 2699{
1944 int pri; 2700 int pri;
1945 unsigned int count = 0; 2701 unsigned int count = 0;
1946 2702
1947 for (pri = NUMPRI; pri--; ) 2703 for (pri = NUMPRI; pri--; )
… …
1951} 2707}
1952 2708
1953void noinline 2709void noinline
1954ev_invoke_pending (EV_P) 2710ev_invoke_pending (EV_P)
1955{ 2711{
1956 int pri; 2712 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1957
1958 for (pri = NUMPRI; pri--; )
1959 while (pendingcnt [pri]) 2713 while (pendingcnt [pendingpri])
1960 { 2714 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2715 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965 2716
1966 p->w->pending = 0; 2717 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 2718 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
1969 } 2720 }
… …
2026 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 2778 feed_reverse (EV_A_ (W)w);
2028 } 2779 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2780 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 2781
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 2782 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 2783 }
2033} 2784}
2034 2785
2035#if EV_PERIODIC_ENABLE 2786#if EV_PERIODIC_ENABLE
2787
2788static void noinline
2789periodic_recalc (EV_P_ ev_periodic *w)
2790{
2791 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2792 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2793
2794 /* the above almost always errs on the low side */
2795 while (at <= ev_rt_now)
2796 {
2797 ev_tstamp nat = at + w->interval;
2798
2799 /* when resolution fails us, we use ev_rt_now */
2800 if (expect_false (nat == at))
2801 {
2802 at = ev_rt_now;
2803 break;
2804 }
2805
2806 at = nat;
2807 }
2808
2809 ev_at (w) = at;
2810}
2811
2036/* make periodics pending */ 2812/* make periodics pending */
2037inline_size void 2813inline_size void
2038periodics_reify (EV_P) 2814periodics_reify (EV_P)
2039{ 2815{
2040 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
… …
2059 ANHE_at_cache (periodics [HEAP0]); 2835 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 2836 downheap (periodics, periodiccnt, HEAP0);
2061 } 2837 }
2062 else if (w->interval) 2838 else if (w->interval)
2063 { 2839 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2840 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 2841 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 2842 downheap (periodics, periodiccnt, HEAP0);
2080 } 2843 }
2081 else 2844 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2845 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 2852 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 2853 }
2091} 2854}
2092 2855
2093/* simply recalculate all periodics */ 2856/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2857/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 2858static void noinline ecb_cold
2096periodics_reschedule (EV_P) 2859periodics_reschedule (EV_P)
2097{ 2860{
2098 int i; 2861 int i;
2099 2862
2100 /* adjust periodics after time jump */ 2863 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2866 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 2867
2105 if (w->reschedule_cb) 2868 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2869 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 2870 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2871 periodic_recalc (EV_A_ w);
2109 2872
2110 ANHE_at_cache (periodics [i]); 2873 ANHE_at_cache (periodics [i]);
2111 } 2874 }
2112 2875
2113 reheap (periodics, periodiccnt); 2876 reheap (periodics, periodiccnt);
2114} 2877}
2115#endif 2878#endif
2116 2879
2117/* adjust all timers by a given offset */ 2880/* adjust all timers by a given offset */
2118static void noinline 2881static void noinline ecb_cold
2119timers_reschedule (EV_P_ ev_tstamp adjust) 2882timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 2883{
2121 int i; 2884 int i;
2122 2885
2123 for (i = 0; i < timercnt; ++i) 2886 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 2890 ANHE_at_cache (*he);
2128 } 2891 }
2129} 2892}
2130 2893
2131/* fetch new monotonic and realtime times from the kernel */ 2894/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 2895/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 2896inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 2897time_update (EV_P_ ev_tstamp max_block)
2135{ 2898{
2136#if EV_USE_MONOTONIC 2899#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 2900 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 2923 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 2924 * in the unlikely event of having been preempted here.
2162 */ 2925 */
2163 for (i = 4; --i; ) 2926 for (i = 4; --i; )
2164 { 2927 {
2928 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 2929 rtmn_diff = ev_rt_now - mn_now;
2166 2930
2931 diff = odiff - rtmn_diff;
2932
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2933 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 2934 return; /* all is well */
2169 2935
2170 ev_rt_now = ev_time (); 2936 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 2937 mn_now = get_clock ();
2172 now_floor = mn_now; 2938 now_floor = mn_now;
… …
2194 2960
2195 mn_now = ev_rt_now; 2961 mn_now = ev_rt_now;
2196 } 2962 }
2197} 2963}
2198 2964
2199void 2965int
2200ev_loop (EV_P_ int flags) 2966ev_run (EV_P_ int flags)
2201{ 2967{
2202#if EV_MINIMAL < 2 2968#if EV_FEATURE_API
2203 ++loop_depth; 2969 ++loop_depth;
2204#endif 2970#endif
2205 2971
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2972 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 2973
2208 loop_done = EVUNLOOP_CANCEL; 2974 loop_done = EVBREAK_CANCEL;
2209 2975
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2976 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 2977
2212 do 2978 do
2213 { 2979 {
2214#if EV_VERIFY >= 2 2980#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 2981 ev_verify (EV_A);
2216#endif 2982#endif
2217 2983
2218#ifndef _WIN32 2984#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 2985 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 2986 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2998 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 2999 EV_INVOKE_PENDING;
2234 } 3000 }
2235#endif 3001#endif
2236 3002
3003#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 3004 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 3005 if (expect_false (preparecnt))
2239 { 3006 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3007 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 3008 EV_INVOKE_PENDING;
2242 } 3009 }
3010#endif
2243 3011
2244 if (expect_false (loop_done)) 3012 if (expect_false (loop_done))
2245 break; 3013 break;
2246 3014
2247 /* we might have forked, so reify kernel state if necessary */ 3015 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 3022 /* calculate blocking time */
2255 { 3023 {
2256 ev_tstamp waittime = 0.; 3024 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 3025 ev_tstamp sleeptime = 0.;
2258 3026
3027 /* remember old timestamp for io_blocktime calculation */
3028 ev_tstamp prev_mn_now = mn_now;
3029
3030 /* update time to cancel out callback processing overhead */
3031 time_update (EV_A_ 1e100);
3032
3033 /* from now on, we want a pipe-wake-up */
3034 pipe_write_wanted = 1;
3035
3036 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3037
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3038 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3039 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3040 waittime = MAX_BLOCKTIME;
2268 3041
2269 if (timercnt) 3042 if (timercnt)
2270 { 3043 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
2273 } 3046 }
2274 3047
2275#if EV_PERIODIC_ENABLE 3048#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3049 if (periodiccnt)
2277 { 3050 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3051 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3052 if (waittime > to) waittime = to;
2280 } 3053 }
2281#endif 3054#endif
2282 3055
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3056 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3057 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3058 waittime = timeout_blocktime;
3059
3060 /* at this point, we NEED to wait, so we have to ensure */
3061 /* to pass a minimum nonzero value to the backend */
3062 if (expect_false (waittime < backend_mintime))
3063 waittime = backend_mintime;
2286 3064
2287 /* extra check because io_blocktime is commonly 0 */ 3065 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3066 if (expect_false (io_blocktime))
2289 { 3067 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3068 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3069
2292 if (sleeptime > waittime - backend_fudge) 3070 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3071 sleeptime = waittime - backend_mintime;
2294 3072
2295 if (expect_true (sleeptime > 0.)) 3073 if (expect_true (sleeptime > 0.))
2296 { 3074 {
2297 ev_sleep (sleeptime); 3075 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3076 waittime -= sleeptime;
2299 } 3077 }
2300 } 3078 }
2301 } 3079 }
2302 3080
2303#if EV_MINIMAL < 2 3081#if EV_FEATURE_API
2304 ++loop_count; 3082 ++loop_count;
2305#endif 3083#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3084 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3085 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3086 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3087
3088 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3089
3090 if (pipe_write_skipped)
3091 {
3092 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3094 }
3095
2309 3096
2310 /* update ev_rt_now, do magic */ 3097 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3098 time_update (EV_A_ waittime + sleeptime);
2312 } 3099 }
2313 3100
… …
2320#if EV_IDLE_ENABLE 3107#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3108 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3109 idle_reify (EV_A);
2323#endif 3110#endif
2324 3111
3112#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3113 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3114 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3115 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3116#endif
2328 3117
2329 EV_INVOKE_PENDING; 3118 EV_INVOKE_PENDING;
2330 } 3119 }
2331 while (expect_true ( 3120 while (expect_true (
2332 activecnt 3121 activecnt
2333 && !loop_done 3122 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3123 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3124 ));
2336 3125
2337 if (loop_done == EVUNLOOP_ONE) 3126 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3127 loop_done = EVBREAK_CANCEL;
2339 3128
2340#if EV_MINIMAL < 2 3129#if EV_FEATURE_API
2341 --loop_depth; 3130 --loop_depth;
2342#endif 3131#endif
3132
3133 return activecnt;
2343} 3134}
2344 3135
2345void 3136void
2346ev_unloop (EV_P_ int how) 3137ev_break (EV_P_ int how) EV_THROW
2347{ 3138{
2348 loop_done = how; 3139 loop_done = how;
2349} 3140}
2350 3141
2351void 3142void
2352ev_ref (EV_P) 3143ev_ref (EV_P) EV_THROW
2353{ 3144{
2354 ++activecnt; 3145 ++activecnt;
2355} 3146}
2356 3147
2357void 3148void
2358ev_unref (EV_P) 3149ev_unref (EV_P) EV_THROW
2359{ 3150{
2360 --activecnt; 3151 --activecnt;
2361} 3152}
2362 3153
2363void 3154void
2364ev_now_update (EV_P) 3155ev_now_update (EV_P) EV_THROW
2365{ 3156{
2366 time_update (EV_A_ 1e100); 3157 time_update (EV_A_ 1e100);
2367} 3158}
2368 3159
2369void 3160void
2370ev_suspend (EV_P) 3161ev_suspend (EV_P) EV_THROW
2371{ 3162{
2372 ev_now_update (EV_A); 3163 ev_now_update (EV_A);
2373} 3164}
2374 3165
2375void 3166void
2376ev_resume (EV_P) 3167ev_resume (EV_P) EV_THROW
2377{ 3168{
2378 ev_tstamp mn_prev = mn_now; 3169 ev_tstamp mn_prev = mn_now;
2379 3170
2380 ev_now_update (EV_A); 3171 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3172 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2398inline_size void 3189inline_size void
2399wlist_del (WL *head, WL elem) 3190wlist_del (WL *head, WL elem)
2400{ 3191{
2401 while (*head) 3192 while (*head)
2402 { 3193 {
2403 if (*head == elem) 3194 if (expect_true (*head == elem))
2404 { 3195 {
2405 *head = elem->next; 3196 *head = elem->next;
2406 return; 3197 break;
2407 } 3198 }
2408 3199
2409 head = &(*head)->next; 3200 head = &(*head)->next;
2410 } 3201 }
2411} 3202}
… …
2420 w->pending = 0; 3211 w->pending = 0;
2421 } 3212 }
2422} 3213}
2423 3214
2424int 3215int
2425ev_clear_pending (EV_P_ void *w) 3216ev_clear_pending (EV_P_ void *w) EV_THROW
2426{ 3217{
2427 W w_ = (W)w; 3218 W w_ = (W)w;
2428 int pending = w_->pending; 3219 int pending = w_->pending;
2429 3220
2430 if (expect_true (pending)) 3221 if (expect_true (pending))
… …
2463} 3254}
2464 3255
2465/*****************************************************************************/ 3256/*****************************************************************************/
2466 3257
2467void noinline 3258void noinline
2468ev_io_start (EV_P_ ev_io *w) 3259ev_io_start (EV_P_ ev_io *w) EV_THROW
2469{ 3260{
2470 int fd = w->fd; 3261 int fd = w->fd;
2471 3262
2472 if (expect_false (ev_is_active (w))) 3263 if (expect_false (ev_is_active (w)))
2473 return; 3264 return;
2474 3265
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3266 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3267 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 3268
2478 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2479 3270
2480 ev_start (EV_A_ (W)w, 1); 3271 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3272 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2482 wlist_add (&anfds[fd].head, (WL)w); 3273 wlist_add (&anfds[fd].head, (WL)w);
2483 3274
3275 /* common bug, apparently */
3276 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3277
2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2485 w->events &= ~EV__IOFDSET; 3279 w->events &= ~EV__IOFDSET;
2486 3280
2487 EV_FREQUENT_CHECK; 3281 EV_FREQUENT_CHECK;
2488} 3282}
2489 3283
2490void noinline 3284void noinline
2491ev_io_stop (EV_P_ ev_io *w) 3285ev_io_stop (EV_P_ ev_io *w) EV_THROW
2492{ 3286{
2493 clear_pending (EV_A_ (W)w); 3287 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 3288 if (expect_false (!ev_is_active (w)))
2495 return; 3289 return;
2496 3290
… …
2499 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2500 3294
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3295 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
2503 3297
2504 fd_change (EV_A_ w->fd, 1); 3298 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3299
2506 EV_FREQUENT_CHECK; 3300 EV_FREQUENT_CHECK;
2507} 3301}
2508 3302
2509void noinline 3303void noinline
2510ev_timer_start (EV_P_ ev_timer *w) 3304ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2511{ 3305{
2512 if (expect_false (ev_is_active (w))) 3306 if (expect_false (ev_is_active (w)))
2513 return; 3307 return;
2514 3308
2515 ev_at (w) += mn_now; 3309 ev_at (w) += mn_now;
… …
2529 3323
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3324 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 3325}
2532 3326
2533void noinline 3327void noinline
2534ev_timer_stop (EV_P_ ev_timer *w) 3328ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2535{ 3329{
2536 clear_pending (EV_A_ (W)w); 3330 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 3331 if (expect_false (!ev_is_active (w)))
2538 return; 3332 return;
2539 3333
… …
2551 timers [active] = timers [timercnt + HEAP0]; 3345 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 3346 adjustheap (timers, timercnt, active);
2553 } 3347 }
2554 } 3348 }
2555 3349
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 3350 ev_at (w) -= mn_now;
2559 3351
2560 ev_stop (EV_A_ (W)w); 3352 ev_stop (EV_A_ (W)w);
3353
3354 EV_FREQUENT_CHECK;
2561} 3355}
2562 3356
2563void noinline 3357void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 3358ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2565{ 3359{
2566 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
3361
3362 clear_pending (EV_A_ (W)w);
2567 3363
2568 if (ev_is_active (w)) 3364 if (ev_is_active (w))
2569 { 3365 {
2570 if (w->repeat) 3366 if (w->repeat)
2571 { 3367 {
… …
2584 3380
2585 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2586} 3382}
2587 3383
2588ev_tstamp 3384ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 3385ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2590{ 3386{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3387 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 3388}
2593 3389
2594#if EV_PERIODIC_ENABLE 3390#if EV_PERIODIC_ENABLE
2595void noinline 3391void noinline
2596ev_periodic_start (EV_P_ ev_periodic *w) 3392ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2597{ 3393{
2598 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2599 return; 3395 return;
2600 3396
2601 if (w->reschedule_cb) 3397 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3398 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 3399 else if (w->interval)
2604 { 3400 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3401 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 3402 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 3403 }
2609 else 3404 else
2610 ev_at (w) = w->offset; 3405 ev_at (w) = w->offset;
2611 3406
2612 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
… …
2622 3417
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 3419}
2625 3420
2626void noinline 3421void noinline
2627ev_periodic_stop (EV_P_ ev_periodic *w) 3422ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2628{ 3423{
2629 clear_pending (EV_A_ (W)w); 3424 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 3425 if (expect_false (!ev_is_active (w)))
2631 return; 3426 return;
2632 3427
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 3439 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 3440 adjustheap (periodics, periodiccnt, active);
2646 } 3441 }
2647 } 3442 }
2648 3443
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 3444 ev_stop (EV_A_ (W)w);
3445
3446 EV_FREQUENT_CHECK;
2652} 3447}
2653 3448
2654void noinline 3449void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 3450ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2656{ 3451{
2657 /* TODO: use adjustheap and recalculation */ 3452 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 3453 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 3454 ev_periodic_start (EV_A_ w);
2660} 3455}
… …
2662 3457
2663#ifndef SA_RESTART 3458#ifndef SA_RESTART
2664# define SA_RESTART 0 3459# define SA_RESTART 0
2665#endif 3460#endif
2666 3461
3462#if EV_SIGNAL_ENABLE
3463
2667void noinline 3464void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 3465ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2669{ 3466{
2670#if EV_MULTIPLICITY
2671 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2672#endif
2673 if (expect_false (ev_is_active (w))) 3467 if (expect_false (ev_is_active (w)))
2674 return; 3468 return;
2675 3469
2676 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3470 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3471
3472#if EV_MULTIPLICITY
3473 assert (("libev: a signal must not be attached to two different loops",
3474 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3475
3476 signals [w->signum - 1].loop = EV_A;
3477#endif
2677 3478
2678 EV_FREQUENT_CHECK; 3479 EV_FREQUENT_CHECK;
2679 3480
2680#if EV_USE_SIGNALFD 3481#if EV_USE_SIGNALFD
2681 if (sigfd == -2) 3482 if (sigfd == -2)
… …
2703 sigaddset (&sigfd_set, w->signum); 3504 sigaddset (&sigfd_set, w->signum);
2704 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3505 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705 3506
2706 signalfd (sigfd, &sigfd_set, 0); 3507 signalfd (sigfd, &sigfd_set, 0);
2707 } 3508 }
2708 else
2709#endif
2710 evpipe_init (EV_A);
2711
2712 {
2713#ifndef _WIN32
2714 sigset_t full, prev;
2715 sigfillset (&full);
2716 sigprocmask (SIG_SETMASK, &full, &prev);
2717#endif
2718
2719 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2720
2721#ifndef _WIN32
2722# if EV_USE_SIGNALFD
2723 if (sigfd < 0)/*TODO*/
2724# endif 3509#endif
2725 sigdelset (&prev, w->signum);
2726 sigprocmask (SIG_SETMASK, &prev, 0);
2727#endif
2728 }
2729 3510
2730 ev_start (EV_A_ (W)w, 1); 3511 ev_start (EV_A_ (W)w, 1);
2731 wlist_add (&signals [w->signum - 1].head, (WL)w); 3512 wlist_add (&signals [w->signum - 1].head, (WL)w);
2732 3513
2733 if (!((WL)w)->next) 3514 if (!((WL)w)->next)
2734 {
2735#if _WIN32
2736 signal (w->signum, ev_sighandler);
2737#else
2738# if EV_USE_SIGNALFD 3515# if EV_USE_SIGNALFD
2739 if (sigfd < 0) /*TODO*/ 3516 if (sigfd < 0) /*TODO*/
2740# endif 3517# endif
2741 { 3518 {
3519# ifdef _WIN32
3520 evpipe_init (EV_A);
3521
3522 signal (w->signum, ev_sighandler);
3523# else
2742 struct sigaction sa = { }; 3524 struct sigaction sa;
3525
3526 evpipe_init (EV_A);
3527
2743 sa.sa_handler = ev_sighandler; 3528 sa.sa_handler = ev_sighandler;
2744 sigfillset (&sa.sa_mask); 3529 sigfillset (&sa.sa_mask);
2745 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3530 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2746 sigaction (w->signum, &sa, 0); 3531 sigaction (w->signum, &sa, 0);
3532
3533 if (origflags & EVFLAG_NOSIGMASK)
3534 {
3535 sigemptyset (&sa.sa_mask);
3536 sigaddset (&sa.sa_mask, w->signum);
3537 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2747 } 3538 }
2748#endif 3539#endif
2749 } 3540 }
2750 3541
2751 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2752} 3543}
2753 3544
2754void noinline 3545void noinline
2755ev_signal_stop (EV_P_ ev_signal *w) 3546ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2756{ 3547{
2757 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2758 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2759 return; 3550 return;
2760 3551
… …
2762 3553
2763 wlist_del (&signals [w->signum - 1].head, (WL)w); 3554 wlist_del (&signals [w->signum - 1].head, (WL)w);
2764 ev_stop (EV_A_ (W)w); 3555 ev_stop (EV_A_ (W)w);
2765 3556
2766 if (!signals [w->signum - 1].head) 3557 if (!signals [w->signum - 1].head)
3558 {
3559#if EV_MULTIPLICITY
3560 signals [w->signum - 1].loop = 0; /* unattach from signal */
3561#endif
2767#if EV_USE_SIGNALFD 3562#if EV_USE_SIGNALFD
2768 if (sigfd >= 0) 3563 if (sigfd >= 0)
2769 { 3564 {
2770 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3565 sigset_t ss;
3566
3567 sigemptyset (&ss);
3568 sigaddset (&ss, w->signum);
2771 sigdelset (&sigfd_set, w->signum); 3569 sigdelset (&sigfd_set, w->signum);
3570
2772 signalfd (sigfd, &sigfd_set, 0); 3571 signalfd (sigfd, &sigfd_set, 0);
2773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3572 sigprocmask (SIG_UNBLOCK, &ss, 0);
2774 /*TODO: maybe unblock signal? */
2775 } 3573 }
2776 else 3574 else
2777#endif 3575#endif
2778 signal (w->signum, SIG_DFL); 3576 signal (w->signum, SIG_DFL);
3577 }
2779 3578
2780 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2781} 3580}
3581
3582#endif
3583
3584#if EV_CHILD_ENABLE
2782 3585
2783void 3586void
2784ev_child_start (EV_P_ ev_child *w) 3587ev_child_start (EV_P_ ev_child *w) EV_THROW
2785{ 3588{
2786#if EV_MULTIPLICITY 3589#if EV_MULTIPLICITY
2787 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3590 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2788#endif 3591#endif
2789 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
2790 return; 3593 return;
2791 3594
2792 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2793 3596
2794 ev_start (EV_A_ (W)w, 1); 3597 ev_start (EV_A_ (W)w, 1);
2795 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3598 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2796 3599
2797 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2798} 3601}
2799 3602
2800void 3603void
2801ev_child_stop (EV_P_ ev_child *w) 3604ev_child_stop (EV_P_ ev_child *w) EV_THROW
2802{ 3605{
2803 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2805 return; 3608 return;
2806 3609
2807 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2808 3611
2809 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3612 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2810 ev_stop (EV_A_ (W)w); 3613 ev_stop (EV_A_ (W)w);
2811 3614
2812 EV_FREQUENT_CHECK; 3615 EV_FREQUENT_CHECK;
2813} 3616}
3617
3618#endif
2814 3619
2815#if EV_STAT_ENABLE 3620#if EV_STAT_ENABLE
2816 3621
2817# ifdef _WIN32 3622# ifdef _WIN32
2818# undef lstat 3623# undef lstat
… …
2824#define MIN_STAT_INTERVAL 0.1074891 3629#define MIN_STAT_INTERVAL 0.1074891
2825 3630
2826static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3631static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2827 3632
2828#if EV_USE_INOTIFY 3633#if EV_USE_INOTIFY
2829# define EV_INOTIFY_BUFSIZE 8192 3634
3635/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3636# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2830 3637
2831static void noinline 3638static void noinline
2832infy_add (EV_P_ ev_stat *w) 3639infy_add (EV_P_ ev_stat *w)
2833{ 3640{
2834 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); 3641 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);
2835 3642
2836 if (w->wd < 0) 3643 if (w->wd >= 0)
3644 {
3645 struct statfs sfs;
3646
3647 /* now local changes will be tracked by inotify, but remote changes won't */
3648 /* unless the filesystem is known to be local, we therefore still poll */
3649 /* also do poll on <2.6.25, but with normal frequency */
3650
3651 if (!fs_2625)
3652 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3653 else if (!statfs (w->path, &sfs)
3654 && (sfs.f_type == 0x1373 /* devfs */
3655 || sfs.f_type == 0xEF53 /* ext2/3 */
3656 || sfs.f_type == 0x3153464a /* jfs */
3657 || sfs.f_type == 0x52654973 /* reiser3 */
3658 || sfs.f_type == 0x01021994 /* tempfs */
3659 || sfs.f_type == 0x58465342 /* xfs */))
3660 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3661 else
3662 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2837 { 3663 }
3664 else
3665 {
3666 /* can't use inotify, continue to stat */
2838 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3667 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2839 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2840 3668
2841 /* monitor some parent directory for speedup hints */ 3669 /* if path is not there, monitor some parent directory for speedup hints */
2842 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3670 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2843 /* but an efficiency issue only */ 3671 /* but an efficiency issue only */
2844 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3672 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2845 { 3673 {
2846 char path [4096]; 3674 char path [4096];
… …
2856 if (!pend || pend == path) 3684 if (!pend || pend == path)
2857 break; 3685 break;
2858 3686
2859 *pend = 0; 3687 *pend = 0;
2860 w->wd = inotify_add_watch (fs_fd, path, mask); 3688 w->wd = inotify_add_watch (fs_fd, path, mask);
2861 } 3689 }
2862 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3690 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2863 } 3691 }
2864 } 3692 }
2865 3693
2866 if (w->wd >= 0) 3694 if (w->wd >= 0)
2867 {
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3695 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869 3696
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 3697 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 3698 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873 struct statfs sfs;
2874
2875 if (fs_2625 && !statfs (w->path, &sfs))
2876 if (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)
2882 return;
2883
2884 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885 ev_timer_again (EV_A_ &w->timer); 3699 ev_timer_again (EV_A_ &w->timer);
2886 } 3700 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887} 3701}
2888 3702
2889static void noinline 3703static void noinline
2890infy_del (EV_P_ ev_stat *w) 3704infy_del (EV_P_ ev_stat *w)
2891{ 3705{
… …
2894 3708
2895 if (wd < 0) 3709 if (wd < 0)
2896 return; 3710 return;
2897 3711
2898 w->wd = -2; 3712 w->wd = -2;
2899 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3713 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2900 wlist_del (&fs_hash [slot].head, (WL)w); 3714 wlist_del (&fs_hash [slot].head, (WL)w);
2901 3715
2902 /* remove this watcher, if others are watching it, they will rearm */ 3716 /* remove this watcher, if others are watching it, they will rearm */
2903 inotify_rm_watch (fs_fd, wd); 3717 inotify_rm_watch (fs_fd, wd);
2904} 3718}
… …
2906static void noinline 3720static void noinline
2907infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3721infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2908{ 3722{
2909 if (slot < 0) 3723 if (slot < 0)
2910 /* overflow, need to check for all hash slots */ 3724 /* overflow, need to check for all hash slots */
2911 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3725 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2912 infy_wd (EV_A_ slot, wd, ev); 3726 infy_wd (EV_A_ slot, wd, ev);
2913 else 3727 else
2914 { 3728 {
2915 WL w_; 3729 WL w_;
2916 3730
2917 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3731 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2918 { 3732 {
2919 ev_stat *w = (ev_stat *)w_; 3733 ev_stat *w = (ev_stat *)w_;
2920 w_ = w_->next; /* lets us remove this watcher and all before it */ 3734 w_ = w_->next; /* lets us remove this watcher and all before it */
2921 3735
2922 if (w->wd == wd || wd == -1) 3736 if (w->wd == wd || wd == -1)
2923 { 3737 {
2924 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3738 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2925 { 3739 {
2926 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3740 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2927 w->wd = -1; 3741 w->wd = -1;
2928 infy_add (EV_A_ w); /* re-add, no matter what */ 3742 infy_add (EV_A_ w); /* re-add, no matter what */
2929 } 3743 }
2930 3744
2931 stat_timer_cb (EV_A_ &w->timer, 0); 3745 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2936 3750
2937static void 3751static void
2938infy_cb (EV_P_ ev_io *w, int revents) 3752infy_cb (EV_P_ ev_io *w, int revents)
2939{ 3753{
2940 char buf [EV_INOTIFY_BUFSIZE]; 3754 char buf [EV_INOTIFY_BUFSIZE];
2941 struct inotify_event *ev = (struct inotify_event *)buf;
2942 int ofs; 3755 int ofs;
2943 int len = read (fs_fd, buf, sizeof (buf)); 3756 int len = read (fs_fd, buf, sizeof (buf));
2944 3757
2945 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3758 for (ofs = 0; ofs < len; )
3759 {
3760 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2946 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3761 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3762 ofs += sizeof (struct inotify_event) + ev->len;
3763 }
2947} 3764}
2948 3765
2949inline_size void 3766inline_size void ecb_cold
2950check_2625 (EV_P) 3767ev_check_2625 (EV_P)
2951{ 3768{
2952 /* kernels < 2.6.25 are borked 3769 /* kernels < 2.6.25 are borked
2953 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3770 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2954 */ 3771 */
2955 struct utsname buf; 3772 if (ev_linux_version () < 0x020619)
2956 int major, minor, micro;
2957
2958 if (uname (&buf))
2959 return; 3773 return;
2960 3774
2961 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2962 return;
2963
2964 if (major < 2
2965 || (major == 2 && minor < 6)
2966 || (major == 2 && minor == 6 && micro < 25))
2967 return;
2968
2969 fs_2625 = 1; 3775 fs_2625 = 1;
3776}
3777
3778inline_size int
3779infy_newfd (void)
3780{
3781#if defined IN_CLOEXEC && defined IN_NONBLOCK
3782 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3783 if (fd >= 0)
3784 return fd;
3785#endif
3786 return inotify_init ();
2970} 3787}
2971 3788
2972inline_size void 3789inline_size void
2973infy_init (EV_P) 3790infy_init (EV_P)
2974{ 3791{
2975 if (fs_fd != -2) 3792 if (fs_fd != -2)
2976 return; 3793 return;
2977 3794
2978 fs_fd = -1; 3795 fs_fd = -1;
2979 3796
2980 check_2625 (EV_A); 3797 ev_check_2625 (EV_A);
2981 3798
2982 fs_fd = inotify_init (); 3799 fs_fd = infy_newfd ();
2983 3800
2984 if (fs_fd >= 0) 3801 if (fs_fd >= 0)
2985 { 3802 {
3803 fd_intern (fs_fd);
2986 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3804 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987 ev_set_priority (&fs_w, EV_MAXPRI); 3805 ev_set_priority (&fs_w, EV_MAXPRI);
2988 ev_io_start (EV_A_ &fs_w); 3806 ev_io_start (EV_A_ &fs_w);
3807 ev_unref (EV_A);
2989 } 3808 }
2990} 3809}
2991 3810
2992inline_size void 3811inline_size void
2993infy_fork (EV_P) 3812infy_fork (EV_P)
… …
2995 int slot; 3814 int slot;
2996 3815
2997 if (fs_fd < 0) 3816 if (fs_fd < 0)
2998 return; 3817 return;
2999 3818
3819 ev_ref (EV_A);
3820 ev_io_stop (EV_A_ &fs_w);
3000 close (fs_fd); 3821 close (fs_fd);
3001 fs_fd = inotify_init (); 3822 fs_fd = infy_newfd ();
3002 3823
3824 if (fs_fd >= 0)
3825 {
3826 fd_intern (fs_fd);
3827 ev_io_set (&fs_w, fs_fd, EV_READ);
3828 ev_io_start (EV_A_ &fs_w);
3829 ev_unref (EV_A);
3830 }
3831
3003 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3832 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3004 { 3833 {
3005 WL w_ = fs_hash [slot].head; 3834 WL w_ = fs_hash [slot].head;
3006 fs_hash [slot].head = 0; 3835 fs_hash [slot].head = 0;
3007 3836
3008 while (w_) 3837 while (w_)
… …
3013 w->wd = -1; 3842 w->wd = -1;
3014 3843
3015 if (fs_fd >= 0) 3844 if (fs_fd >= 0)
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 3845 infy_add (EV_A_ w); /* re-add, no matter what */
3017 else 3846 else
3847 {
3848 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3849 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3018 ev_timer_again (EV_A_ &w->timer); 3850 ev_timer_again (EV_A_ &w->timer);
3851 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3852 }
3019 } 3853 }
3020 } 3854 }
3021} 3855}
3022 3856
3023#endif 3857#endif
… …
3027#else 3861#else
3028# define EV_LSTAT(p,b) lstat (p, b) 3862# define EV_LSTAT(p,b) lstat (p, b)
3029#endif 3863#endif
3030 3864
3031void 3865void
3032ev_stat_stat (EV_P_ ev_stat *w) 3866ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3033{ 3867{
3034 if (lstat (w->path, &w->attr) < 0) 3868 if (lstat (w->path, &w->attr) < 0)
3035 w->attr.st_nlink = 0; 3869 w->attr.st_nlink = 0;
3036 else if (!w->attr.st_nlink) 3870 else if (!w->attr.st_nlink)
3037 w->attr.st_nlink = 1; 3871 w->attr.st_nlink = 1;
… …
3040static void noinline 3874static void noinline
3041stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3875stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042{ 3876{
3043 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3877 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3044 3878
3045 /* we copy this here each the time so that */ 3879 ev_statdata prev = w->attr;
3046 /* prev has the old value when the callback gets invoked */
3047 w->prev = w->attr;
3048 ev_stat_stat (EV_A_ w); 3880 ev_stat_stat (EV_A_ w);
3049 3881
3050 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3882 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3051 if ( 3883 if (
3052 w->prev.st_dev != w->attr.st_dev 3884 prev.st_dev != w->attr.st_dev
3053 || w->prev.st_ino != w->attr.st_ino 3885 || prev.st_ino != w->attr.st_ino
3054 || w->prev.st_mode != w->attr.st_mode 3886 || prev.st_mode != w->attr.st_mode
3055 || w->prev.st_nlink != w->attr.st_nlink 3887 || prev.st_nlink != w->attr.st_nlink
3056 || w->prev.st_uid != w->attr.st_uid 3888 || prev.st_uid != w->attr.st_uid
3057 || w->prev.st_gid != w->attr.st_gid 3889 || prev.st_gid != w->attr.st_gid
3058 || w->prev.st_rdev != w->attr.st_rdev 3890 || prev.st_rdev != w->attr.st_rdev
3059 || w->prev.st_size != w->attr.st_size 3891 || prev.st_size != w->attr.st_size
3060 || w->prev.st_atime != w->attr.st_atime 3892 || prev.st_atime != w->attr.st_atime
3061 || w->prev.st_mtime != w->attr.st_mtime 3893 || prev.st_mtime != w->attr.st_mtime
3062 || w->prev.st_ctime != w->attr.st_ctime 3894 || prev.st_ctime != w->attr.st_ctime
3063 ) { 3895 ) {
3896 /* we only update w->prev on actual differences */
3897 /* in case we test more often than invoke the callback, */
3898 /* to ensure that prev is always different to attr */
3899 w->prev = prev;
3900
3064 #if EV_USE_INOTIFY 3901 #if EV_USE_INOTIFY
3065 if (fs_fd >= 0) 3902 if (fs_fd >= 0)
3066 { 3903 {
3067 infy_del (EV_A_ w); 3904 infy_del (EV_A_ w);
3068 infy_add (EV_A_ w); 3905 infy_add (EV_A_ w);
… …
3073 ev_feed_event (EV_A_ w, EV_STAT); 3910 ev_feed_event (EV_A_ w, EV_STAT);
3074 } 3911 }
3075} 3912}
3076 3913
3077void 3914void
3078ev_stat_start (EV_P_ ev_stat *w) 3915ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3079{ 3916{
3080 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
3081 return; 3918 return;
3082 3919
3083 ev_stat_stat (EV_A_ w); 3920 ev_stat_stat (EV_A_ w);
… …
3093 3930
3094 if (fs_fd >= 0) 3931 if (fs_fd >= 0)
3095 infy_add (EV_A_ w); 3932 infy_add (EV_A_ w);
3096 else 3933 else
3097#endif 3934#endif
3935 {
3098 ev_timer_again (EV_A_ &w->timer); 3936 ev_timer_again (EV_A_ &w->timer);
3937 ev_unref (EV_A);
3938 }
3099 3939
3100 ev_start (EV_A_ (W)w, 1); 3940 ev_start (EV_A_ (W)w, 1);
3101 3941
3102 EV_FREQUENT_CHECK; 3942 EV_FREQUENT_CHECK;
3103} 3943}
3104 3944
3105void 3945void
3106ev_stat_stop (EV_P_ ev_stat *w) 3946ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3107{ 3947{
3108 clear_pending (EV_A_ (W)w); 3948 clear_pending (EV_A_ (W)w);
3109 if (expect_false (!ev_is_active (w))) 3949 if (expect_false (!ev_is_active (w)))
3110 return; 3950 return;
3111 3951
3112 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3113 3953
3114#if EV_USE_INOTIFY 3954#if EV_USE_INOTIFY
3115 infy_del (EV_A_ w); 3955 infy_del (EV_A_ w);
3116#endif 3956#endif
3957
3958 if (ev_is_active (&w->timer))
3959 {
3960 ev_ref (EV_A);
3117 ev_timer_stop (EV_A_ &w->timer); 3961 ev_timer_stop (EV_A_ &w->timer);
3962 }
3118 3963
3119 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
3120 3965
3121 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3122} 3967}
3123#endif 3968#endif
3124 3969
3125#if EV_IDLE_ENABLE 3970#if EV_IDLE_ENABLE
3126void 3971void
3127ev_idle_start (EV_P_ ev_idle *w) 3972ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3128{ 3973{
3129 if (expect_false (ev_is_active (w))) 3974 if (expect_false (ev_is_active (w)))
3130 return; 3975 return;
3131 3976
3132 pri_adjust (EV_A_ (W)w); 3977 pri_adjust (EV_A_ (W)w);
… …
3145 3990
3146 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3147} 3992}
3148 3993
3149void 3994void
3150ev_idle_stop (EV_P_ ev_idle *w) 3995ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3151{ 3996{
3152 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
3153 if (expect_false (!ev_is_active (w))) 3998 if (expect_false (!ev_is_active (w)))
3154 return; 3999 return;
3155 4000
… …
3167 4012
3168 EV_FREQUENT_CHECK; 4013 EV_FREQUENT_CHECK;
3169} 4014}
3170#endif 4015#endif
3171 4016
4017#if EV_PREPARE_ENABLE
3172void 4018void
3173ev_prepare_start (EV_P_ ev_prepare *w) 4019ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3174{ 4020{
3175 if (expect_false (ev_is_active (w))) 4021 if (expect_false (ev_is_active (w)))
3176 return; 4022 return;
3177 4023
3178 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
… …
3183 4029
3184 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
3185} 4031}
3186 4032
3187void 4033void
3188ev_prepare_stop (EV_P_ ev_prepare *w) 4034ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3189{ 4035{
3190 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3192 return; 4038 return;
3193 4039
… …
3202 4048
3203 ev_stop (EV_A_ (W)w); 4049 ev_stop (EV_A_ (W)w);
3204 4050
3205 EV_FREQUENT_CHECK; 4051 EV_FREQUENT_CHECK;
3206} 4052}
4053#endif
3207 4054
4055#if EV_CHECK_ENABLE
3208void 4056void
3209ev_check_start (EV_P_ ev_check *w) 4057ev_check_start (EV_P_ ev_check *w) EV_THROW
3210{ 4058{
3211 if (expect_false (ev_is_active (w))) 4059 if (expect_false (ev_is_active (w)))
3212 return; 4060 return;
3213 4061
3214 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
… …
3219 4067
3220 EV_FREQUENT_CHECK; 4068 EV_FREQUENT_CHECK;
3221} 4069}
3222 4070
3223void 4071void
3224ev_check_stop (EV_P_ ev_check *w) 4072ev_check_stop (EV_P_ ev_check *w) EV_THROW
3225{ 4073{
3226 clear_pending (EV_A_ (W)w); 4074 clear_pending (EV_A_ (W)w);
3227 if (expect_false (!ev_is_active (w))) 4075 if (expect_false (!ev_is_active (w)))
3228 return; 4076 return;
3229 4077
… …
3238 4086
3239 ev_stop (EV_A_ (W)w); 4087 ev_stop (EV_A_ (W)w);
3240 4088
3241 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
3242} 4090}
4091#endif
3243 4092
3244#if EV_EMBED_ENABLE 4093#if EV_EMBED_ENABLE
3245void noinline 4094void noinline
3246ev_embed_sweep (EV_P_ ev_embed *w) 4095ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3247{ 4096{
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 4097 ev_run (w->other, EVRUN_NOWAIT);
3249} 4098}
3250 4099
3251static void 4100static void
3252embed_io_cb (EV_P_ ev_io *io, int revents) 4101embed_io_cb (EV_P_ ev_io *io, int revents)
3253{ 4102{
3254 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4103 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3255 4104
3256 if (ev_cb (w)) 4105 if (ev_cb (w))
3257 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4106 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3258 else 4107 else
3259 ev_loop (w->other, EVLOOP_NONBLOCK); 4108 ev_run (w->other, EVRUN_NOWAIT);
3260} 4109}
3261 4110
3262static void 4111static void
3263embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4112embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264{ 4113{
3265 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4114 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3266 4115
3267 { 4116 {
3268 struct ev_loop *loop = w->other; 4117 EV_P = w->other;
3269 4118
3270 while (fdchangecnt) 4119 while (fdchangecnt)
3271 { 4120 {
3272 fd_reify (EV_A); 4121 fd_reify (EV_A);
3273 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4122 ev_run (EV_A_ EVRUN_NOWAIT);
3274 } 4123 }
3275 } 4124 }
3276} 4125}
3277 4126
3278static void 4127static void
… …
3281 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4130 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3282 4131
3283 ev_embed_stop (EV_A_ w); 4132 ev_embed_stop (EV_A_ w);
3284 4133
3285 { 4134 {
3286 struct ev_loop *loop = w->other; 4135 EV_P = w->other;
3287 4136
3288 ev_loop_fork (EV_A); 4137 ev_loop_fork (EV_A);
3289 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4138 ev_run (EV_A_ EVRUN_NOWAIT);
3290 } 4139 }
3291 4140
3292 ev_embed_start (EV_A_ w); 4141 ev_embed_start (EV_A_ w);
3293} 4142}
3294 4143
… …
3299 ev_idle_stop (EV_A_ idle); 4148 ev_idle_stop (EV_A_ idle);
3300} 4149}
3301#endif 4150#endif
3302 4151
3303void 4152void
3304ev_embed_start (EV_P_ ev_embed *w) 4153ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3305{ 4154{
3306 if (expect_false (ev_is_active (w))) 4155 if (expect_false (ev_is_active (w)))
3307 return; 4156 return;
3308 4157
3309 { 4158 {
3310 struct ev_loop *loop = w->other; 4159 EV_P = w->other;
3311 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4160 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3312 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4161 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313 } 4162 }
3314 4163
3315 EV_FREQUENT_CHECK; 4164 EV_FREQUENT_CHECK;
… …
3330 4179
3331 EV_FREQUENT_CHECK; 4180 EV_FREQUENT_CHECK;
3332} 4181}
3333 4182
3334void 4183void
3335ev_embed_stop (EV_P_ ev_embed *w) 4184ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3336{ 4185{
3337 clear_pending (EV_A_ (W)w); 4186 clear_pending (EV_A_ (W)w);
3338 if (expect_false (!ev_is_active (w))) 4187 if (expect_false (!ev_is_active (w)))
3339 return; 4188 return;
3340 4189
… …
3342 4191
3343 ev_io_stop (EV_A_ &w->io); 4192 ev_io_stop (EV_A_ &w->io);
3344 ev_prepare_stop (EV_A_ &w->prepare); 4193 ev_prepare_stop (EV_A_ &w->prepare);
3345 ev_fork_stop (EV_A_ &w->fork); 4194 ev_fork_stop (EV_A_ &w->fork);
3346 4195
4196 ev_stop (EV_A_ (W)w);
4197
3347 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
3348} 4199}
3349#endif 4200#endif
3350 4201
3351#if EV_FORK_ENABLE 4202#if EV_FORK_ENABLE
3352void 4203void
3353ev_fork_start (EV_P_ ev_fork *w) 4204ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3354{ 4205{
3355 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
3356 return; 4207 return;
3357 4208
3358 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
… …
3363 4214
3364 EV_FREQUENT_CHECK; 4215 EV_FREQUENT_CHECK;
3365} 4216}
3366 4217
3367void 4218void
3368ev_fork_stop (EV_P_ ev_fork *w) 4219ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3369{ 4220{
3370 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4222 if (expect_false (!ev_is_active (w)))
3372 return; 4223 return;
3373 4224
… …
3384 4235
3385 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3386} 4237}
3387#endif 4238#endif
3388 4239
4240#if EV_CLEANUP_ENABLE
4241void
4242ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4243{
4244 if (expect_false (ev_is_active (w)))
4245 return;
4246
4247 EV_FREQUENT_CHECK;
4248
4249 ev_start (EV_A_ (W)w, ++cleanupcnt);
4250 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4251 cleanups [cleanupcnt - 1] = w;
4252
4253 /* cleanup watchers should never keep a refcount on the loop */
4254 ev_unref (EV_A);
4255 EV_FREQUENT_CHECK;
4256}
4257
4258void
4259ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4260{
4261 clear_pending (EV_A_ (W)w);
4262 if (expect_false (!ev_is_active (w)))
4263 return;
4264
4265 EV_FREQUENT_CHECK;
4266 ev_ref (EV_A);
4267
4268 {
4269 int active = ev_active (w);
4270
4271 cleanups [active - 1] = cleanups [--cleanupcnt];
4272 ev_active (cleanups [active - 1]) = active;
4273 }
4274
4275 ev_stop (EV_A_ (W)w);
4276
4277 EV_FREQUENT_CHECK;
4278}
4279#endif
4280
3389#if EV_ASYNC_ENABLE 4281#if EV_ASYNC_ENABLE
3390void 4282void
3391ev_async_start (EV_P_ ev_async *w) 4283ev_async_start (EV_P_ ev_async *w) EV_THROW
3392{ 4284{
3393 if (expect_false (ev_is_active (w))) 4285 if (expect_false (ev_is_active (w)))
3394 return; 4286 return;
4287
4288 w->sent = 0;
3395 4289
3396 evpipe_init (EV_A); 4290 evpipe_init (EV_A);
3397 4291
3398 EV_FREQUENT_CHECK; 4292 EV_FREQUENT_CHECK;
3399 4293
… …
3403 4297
3404 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
3405} 4299}
3406 4300
3407void 4301void
3408ev_async_stop (EV_P_ ev_async *w) 4302ev_async_stop (EV_P_ ev_async *w) EV_THROW
3409{ 4303{
3410 clear_pending (EV_A_ (W)w); 4304 clear_pending (EV_A_ (W)w);
3411 if (expect_false (!ev_is_active (w))) 4305 if (expect_false (!ev_is_active (w)))
3412 return; 4306 return;
3413 4307
… …
3424 4318
3425 EV_FREQUENT_CHECK; 4319 EV_FREQUENT_CHECK;
3426} 4320}
3427 4321
3428void 4322void
3429ev_async_send (EV_P_ ev_async *w) 4323ev_async_send (EV_P_ ev_async *w) EV_THROW
3430{ 4324{
3431 w->sent = 1; 4325 w->sent = 1;
3432 evpipe_write (EV_A_ &gotasync); 4326 evpipe_write (EV_A_ &async_pending);
3433} 4327}
3434#endif 4328#endif
3435 4329
3436/*****************************************************************************/ 4330/*****************************************************************************/
3437 4331
… …
3471 4365
3472 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4366 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3473} 4367}
3474 4368
3475void 4369void
3476ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4370ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3477{ 4371{
3478 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4372 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3479 4373
3480 if (expect_false (!once)) 4374 if (expect_false (!once))
3481 { 4375 {
3482 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4376 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3483 return; 4377 return;
3484 } 4378 }
3485 4379
3486 once->cb = cb; 4380 once->cb = cb;
3487 once->arg = arg; 4381 once->arg = arg;
… …
3502} 4396}
3503 4397
3504/*****************************************************************************/ 4398/*****************************************************************************/
3505 4399
3506#if EV_WALK_ENABLE 4400#if EV_WALK_ENABLE
3507void 4401void ecb_cold
3508ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4402ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3509{ 4403{
3510 int i, j; 4404 int i, j;
3511 ev_watcher_list *wl, *wn; 4405 ev_watcher_list *wl, *wn;
3512 4406
3513 if (types & (EV_IO | EV_EMBED)) 4407 if (types & (EV_IO | EV_EMBED))
… …
3556 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4450 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3557#endif 4451#endif
3558 4452
3559#if EV_IDLE_ENABLE 4453#if EV_IDLE_ENABLE
3560 if (types & EV_IDLE) 4454 if (types & EV_IDLE)
3561 for (j = NUMPRI; i--; ) 4455 for (j = NUMPRI; j--; )
3562 for (i = idlecnt [j]; i--; ) 4456 for (i = idlecnt [j]; i--; )
3563 cb (EV_A_ EV_IDLE, idles [j][i]); 4457 cb (EV_A_ EV_IDLE, idles [j][i]);
3564#endif 4458#endif
3565 4459
3566#if EV_FORK_ENABLE 4460#if EV_FORK_ENABLE
… …
3574 if (types & EV_ASYNC) 4468 if (types & EV_ASYNC)
3575 for (i = asynccnt; i--; ) 4469 for (i = asynccnt; i--; )
3576 cb (EV_A_ EV_ASYNC, asyncs [i]); 4470 cb (EV_A_ EV_ASYNC, asyncs [i]);
3577#endif 4471#endif
3578 4472
4473#if EV_PREPARE_ENABLE
3579 if (types & EV_PREPARE) 4474 if (types & EV_PREPARE)
3580 for (i = preparecnt; i--; ) 4475 for (i = preparecnt; i--; )
3581#if EV_EMBED_ENABLE 4476# if EV_EMBED_ENABLE
3582 if (ev_cb (prepares [i]) != embed_prepare_cb) 4477 if (ev_cb (prepares [i]) != embed_prepare_cb)
3583#endif 4478# endif
3584 cb (EV_A_ EV_PREPARE, prepares [i]); 4479 cb (EV_A_ EV_PREPARE, prepares [i]);
4480#endif
3585 4481
4482#if EV_CHECK_ENABLE
3586 if (types & EV_CHECK) 4483 if (types & EV_CHECK)
3587 for (i = checkcnt; i--; ) 4484 for (i = checkcnt; i--; )
3588 cb (EV_A_ EV_CHECK, checks [i]); 4485 cb (EV_A_ EV_CHECK, checks [i]);
4486#endif
3589 4487
4488#if EV_SIGNAL_ENABLE
3590 if (types & EV_SIGNAL) 4489 if (types & EV_SIGNAL)
3591 for (i = 0; i < signalmax; ++i) 4490 for (i = 0; i < EV_NSIG - 1; ++i)
3592 for (wl = signals [i].head; wl; ) 4491 for (wl = signals [i].head; wl; )
3593 { 4492 {
3594 wn = wl->next; 4493 wn = wl->next;
3595 cb (EV_A_ EV_SIGNAL, wl); 4494 cb (EV_A_ EV_SIGNAL, wl);
3596 wl = wn; 4495 wl = wn;
3597 } 4496 }
4497#endif
3598 4498
4499#if EV_CHILD_ENABLE
3599 if (types & EV_CHILD) 4500 if (types & EV_CHILD)
3600 for (i = EV_PID_HASHSIZE; i--; ) 4501 for (i = (EV_PID_HASHSIZE); i--; )
3601 for (wl = childs [i]; wl; ) 4502 for (wl = childs [i]; wl; )
3602 { 4503 {
3603 wn = wl->next; 4504 wn = wl->next;
3604 cb (EV_A_ EV_CHILD, wl); 4505 cb (EV_A_ EV_CHILD, wl);
3605 wl = wn; 4506 wl = wn;
3606 } 4507 }
4508#endif
3607/* EV_STAT 0x00001000 /* stat data changed */ 4509/* EV_STAT 0x00001000 /* stat data changed */
3608/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4510/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3609} 4511}
3610#endif 4512#endif
3611 4513
3612#if EV_MULTIPLICITY 4514#if EV_MULTIPLICITY
3613 #include "ev_wrap.h" 4515 #include "ev_wrap.h"
3614#endif 4516#endif
3615 4517
3616#ifdef __cplusplus
3617}
3618#endif
3619

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