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Comparing libev/ev.c (file contents):
Revision 1.314 by root, Wed Aug 26 17:31:20 2009 UTC vs.
Revision 1.474 by root, Wed Feb 11 19:20:21 2015 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# 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
… …
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
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.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# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 247#endif
215# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
216#endif 251#endif
217 252
218#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 256# else
222# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
223# endif 258# endif
224#endif 259#endif
225 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
226#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 273# else
230# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
231# endif 275# endif
232#endif 276#endif
233 277
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 280#endif
237 281
238#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 285# else
242# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
243# endif 287# endif
244#endif 288#endif
245 289
246#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 292#endif
249 293
250#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
251# ifdef _WIN32 295# ifdef _WIN32
252# define EV_USE_POLL 0 296# define EV_USE_POLL 0
253# else 297# else
254# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 299# endif
256#endif 300#endif
257 301
258#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 305# else
262# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
263# endif 307# endif
264#endif 308#endif
265 309
… …
271# define EV_USE_PORT 0 315# define EV_USE_PORT 0
272#endif 316#endif
273 317
274#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 321# else
278# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
279# endif 323# endif
280#endif 324#endif
281 325
282#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 328#endif
289 329
290#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 332#endif
297 333
298#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 337# else
302# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
303# endif 339# endif
304#endif 340#endif
305 341
306#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 345# else
310# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
311# endif 347# endif
312#endif 348#endif
313 349
… …
316# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
318#endif 354#endif
319 355
320#ifndef EV_VERIFY 356#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 358#endif
323 359
324#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 362#endif
327 363
328#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
330#endif 382#endif
331 383
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 387# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
340# else 392# else
… …
359# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
361#endif 413#endif
362 414
363#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 418# include <sys/select.h>
366# endif 419# endif
367#endif 420#endif
368 421
369#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 423# include <sys/statfs.h>
372# include <sys/inotify.h> 424# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
377# endif 429# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 430#endif
383 431
384#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 434# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
393# else 441# else
394# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
395# endif 443# endif
396# endif 444# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 446#endif
405 447
406#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 450# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
415# else 457# else
416# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
417# endif 459# endif
418# endif 460# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 462
424struct signalfd_siginfo 463struct signalfd_siginfo
425{ 464{
426 uint32_t ssi_signo; 465 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
428}; 467};
429# ifdef __cplusplus
430}
431# endif 468#endif
432#endif
433
434 469
435/**/ 470/**/
436 471
437#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 474#else
440# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
441#endif 476#endif
442 477
443/* 478/*
444 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 481 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 484
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
456 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
457#if __GNUC__ >= 4 546 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
459# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
460#else 562#else
461# define expect(expr,value) (expr) 563 #include <inttypes.h>
462# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
464# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
465# endif 569#endif
570
571/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
573 #if _ILP32
574 #define ECB_AMD64_X32 1
575 #else
576 #define ECB_AMD64 1
466#endif 577 #endif
578#endif
467 579
580/* many compilers define _GNUC_ to some versions but then only implement
581 * what their idiot authors think are the "more important" extensions,
582 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place.
586 */
587#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
588 #define ECB_GCC_VERSION(major,minor) 0
589#else
590 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
591#endif
592
593#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
594
595#if __clang__ && defined __has_builtin
596 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
597#else
598 #define ECB_CLANG_BUILTIN(x) 0
599#endif
600
601#if __clang__ && defined __has_extension
602 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
603#else
604 #define ECB_CLANG_EXTENSION(x) 0
605#endif
606
607#define ECB_CPP (__cplusplus+0)
608#define ECB_CPP11 (__cplusplus >= 201103L)
609
610#if ECB_CPP
611 #define ECB_C 0
612 #define ECB_STDC_VERSION 0
613#else
614 #define ECB_C 1
615 #define ECB_STDC_VERSION __STDC_VERSION__
616#endif
617
618#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
619#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
620
621#if ECB_CPP
622 #define ECB_EXTERN_C extern "C"
623 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
624 #define ECB_EXTERN_C_END }
625#else
626 #define ECB_EXTERN_C extern
627 #define ECB_EXTERN_C_BEG
628 #define ECB_EXTERN_C_END
629#endif
630
631/*****************************************************************************/
632
633/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
634/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
635
636#if ECB_NO_THREADS
637 #define ECB_NO_SMP 1
638#endif
639
640#if ECB_NO_SMP
641 #define ECB_MEMORY_FENCE do { } while (0)
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
646 #if __i386 || __i386__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
648 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
649 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
650 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
652 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
653 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
654 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
656 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
657 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
659 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
660 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
662 #elif __aarch64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
664 #elif (__sparc || __sparc__) && !__sparcv8
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
668 #elif defined __s390__ || defined __s390x__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
670 #elif defined __mips__
671 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
672 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
674 #elif defined __alpha__
675 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
676 #elif defined __hppa__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
679 #elif defined __ia64__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
681 #elif defined __m68k__
682 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
683 #elif defined __m88k__
684 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
685 #elif defined __sh__
686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
687 #endif
688 #endif
689#endif
690
691#ifndef ECB_MEMORY_FENCE
692 #if ECB_GCC_VERSION(4,7)
693 /* see comment below (stdatomic.h) about the C11 memory model. */
694 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
695 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
696 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
697
698 #elif ECB_CLANG_EXTENSION(c_atomic)
699 /* see comment below (stdatomic.h) about the C11 memory model. */
700 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
701 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
702 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
703
704 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
705 #define ECB_MEMORY_FENCE __sync_synchronize ()
706 #elif _MSC_VER >= 1500 /* VC++ 2008 */
707 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
708 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
709 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
710 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
711 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
712 #elif _MSC_VER >= 1400 /* VC++ 2005 */
713 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
714 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
715 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
716 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
717 #elif defined _WIN32
718 #include <WinNT.h>
719 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
720 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
721 #include <mbarrier.h>
722 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
724 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
725 #elif __xlC__
726 #define ECB_MEMORY_FENCE __sync ()
727 #endif
728#endif
729
730#ifndef ECB_MEMORY_FENCE
731 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
732 /* we assume that these memory fences work on all variables/all memory accesses, */
733 /* not just C11 atomics and atomic accesses */
734 #include <stdatomic.h>
735 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
736 /* any fence other than seq_cst, which isn't very efficient for us. */
737 /* Why that is, we don't know - either the C11 memory model is quite useless */
738 /* for most usages, or gcc and clang have a bug */
739 /* I *currently* lean towards the latter, and inefficiently implement */
740 /* all three of ecb's fences as a seq_cst fence */
741 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
742 /* for all __atomic_thread_fence's except seq_cst */
743 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
744 #endif
745#endif
746
747#ifndef ECB_MEMORY_FENCE
748 #if !ECB_AVOID_PTHREADS
749 /*
750 * if you get undefined symbol references to pthread_mutex_lock,
751 * or failure to find pthread.h, then you should implement
752 * the ECB_MEMORY_FENCE operations for your cpu/compiler
753 * OR provide pthread.h and link against the posix thread library
754 * of your system.
755 */
756 #include <pthread.h>
757 #define ECB_NEEDS_PTHREADS 1
758 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
759
760 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
761 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
762 #endif
763#endif
764
765#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
766 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
767#endif
768
769#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
770 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
771#endif
772
773/*****************************************************************************/
774
775#if ECB_CPP
776 #define ecb_inline static inline
777#elif ECB_GCC_VERSION(2,5)
778 #define ecb_inline static __inline__
779#elif ECB_C99
780 #define ecb_inline static inline
781#else
782 #define ecb_inline static
783#endif
784
785#if ECB_GCC_VERSION(3,3)
786 #define ecb_restrict __restrict__
787#elif ECB_C99
788 #define ecb_restrict restrict
789#else
790 #define ecb_restrict
791#endif
792
793typedef int ecb_bool;
794
795#define ECB_CONCAT_(a, b) a ## b
796#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
797#define ECB_STRINGIFY_(a) # a
798#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
799
800#define ecb_function_ ecb_inline
801
802#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
803 #define ecb_attribute(attrlist) __attribute__ (attrlist)
804#else
805 #define ecb_attribute(attrlist)
806#endif
807
808#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
809 #define ecb_is_constant(expr) __builtin_constant_p (expr)
810#else
811 /* possible C11 impl for integral types
812 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
813 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
814
815 #define ecb_is_constant(expr) 0
816#endif
817
818#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
819 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
820#else
821 #define ecb_expect(expr,value) (expr)
822#endif
823
824#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
825 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
826#else
827 #define ecb_prefetch(addr,rw,locality)
828#endif
829
830/* no emulation for ecb_decltype */
831#if ECB_CPP11
832 // older implementations might have problems with decltype(x)::type, work around it
833 template<class T> struct ecb_decltype_t { typedef T type; };
834 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
835#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
836 #define ecb_decltype(x) __typeof__ (x)
837#endif
838
839#if _MSC_VER >= 1300
840 #define ecb_deprecated __declspec (deprecated)
841#else
842 #define ecb_deprecated ecb_attribute ((__deprecated__))
843#endif
844
845#define ecb_noinline ecb_attribute ((__noinline__))
846#define ecb_unused ecb_attribute ((__unused__))
847#define ecb_const ecb_attribute ((__const__))
848#define ecb_pure ecb_attribute ((__pure__))
849
850/* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
851#if ECB_C11 || __IBMC_NORETURN
852 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
853 #define ecb_noreturn _Noreturn
854#else
855 #define ecb_noreturn ecb_attribute ((__noreturn__))
856#endif
857
858#if ECB_GCC_VERSION(4,3)
859 #define ecb_artificial ecb_attribute ((__artificial__))
860 #define ecb_hot ecb_attribute ((__hot__))
861 #define ecb_cold ecb_attribute ((__cold__))
862#else
863 #define ecb_artificial
864 #define ecb_hot
865 #define ecb_cold
866#endif
867
868/* put around conditional expressions if you are very sure that the */
869/* expression is mostly true or mostly false. note that these return */
870/* booleans, not the expression. */
468#define expect_false(expr) expect ((expr) != 0, 0) 871#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
469#define expect_true(expr) expect ((expr) != 0, 1) 872#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
873/* for compatibility to the rest of the world */
874#define ecb_likely(expr) ecb_expect_true (expr)
875#define ecb_unlikely(expr) ecb_expect_false (expr)
876
877/* count trailing zero bits and count # of one bits */
878#if ECB_GCC_VERSION(3,4) \
879 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
880 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
881 && ECB_CLANG_BUILTIN(__builtin_popcount))
882 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
883 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
884 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
885 #define ecb_ctz32(x) __builtin_ctz (x)
886 #define ecb_ctz64(x) __builtin_ctzll (x)
887 #define ecb_popcount32(x) __builtin_popcount (x)
888 /* no popcountll */
889#else
890 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
891 ecb_function_ ecb_const int
892 ecb_ctz32 (uint32_t x)
893 {
894 int r = 0;
895
896 x &= ~x + 1; /* this isolates the lowest bit */
897
898#if ECB_branchless_on_i386
899 r += !!(x & 0xaaaaaaaa) << 0;
900 r += !!(x & 0xcccccccc) << 1;
901 r += !!(x & 0xf0f0f0f0) << 2;
902 r += !!(x & 0xff00ff00) << 3;
903 r += !!(x & 0xffff0000) << 4;
904#else
905 if (x & 0xaaaaaaaa) r += 1;
906 if (x & 0xcccccccc) r += 2;
907 if (x & 0xf0f0f0f0) r += 4;
908 if (x & 0xff00ff00) r += 8;
909 if (x & 0xffff0000) r += 16;
910#endif
911
912 return r;
913 }
914
915 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
916 ecb_function_ ecb_const int
917 ecb_ctz64 (uint64_t x)
918 {
919 int shift = x & 0xffffffffU ? 0 : 32;
920 return ecb_ctz32 (x >> shift) + shift;
921 }
922
923 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
924 ecb_function_ ecb_const int
925 ecb_popcount32 (uint32_t x)
926 {
927 x -= (x >> 1) & 0x55555555;
928 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
929 x = ((x >> 4) + x) & 0x0f0f0f0f;
930 x *= 0x01010101;
931
932 return x >> 24;
933 }
934
935 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
936 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
937 {
938 int r = 0;
939
940 if (x >> 16) { x >>= 16; r += 16; }
941 if (x >> 8) { x >>= 8; r += 8; }
942 if (x >> 4) { x >>= 4; r += 4; }
943 if (x >> 2) { x >>= 2; r += 2; }
944 if (x >> 1) { r += 1; }
945
946 return r;
947 }
948
949 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
950 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
951 {
952 int r = 0;
953
954 if (x >> 32) { x >>= 32; r += 32; }
955
956 return r + ecb_ld32 (x);
957 }
958#endif
959
960ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
961ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
962ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
963ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
964
965ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
966ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
967{
968 return ( (x * 0x0802U & 0x22110U)
969 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
970}
971
972ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
973ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
974{
975 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
976 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
977 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
978 x = ( x >> 8 ) | ( x << 8);
979
980 return x;
981}
982
983ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
984ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
985{
986 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
987 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
988 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
989 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
990 x = ( x >> 16 ) | ( x << 16);
991
992 return x;
993}
994
995/* popcount64 is only available on 64 bit cpus as gcc builtin */
996/* so for this version we are lazy */
997ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
998ecb_function_ ecb_const int
999ecb_popcount64 (uint64_t x)
1000{
1001 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1002}
1003
1004ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1005ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1006ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1007ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1008ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1009ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1010ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1011ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1012
1013ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1014ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1015ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1016ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1017ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1018ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1019ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1020ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1021
1022#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1023 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1024 #define ecb_bswap32(x) __builtin_bswap32 (x)
1025 #define ecb_bswap64(x) __builtin_bswap64 (x)
1026#else
1027 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1028 ecb_function_ ecb_const uint16_t
1029 ecb_bswap16 (uint16_t x)
1030 {
1031 return ecb_rotl16 (x, 8);
1032 }
1033
1034 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1035 ecb_function_ ecb_const uint32_t
1036 ecb_bswap32 (uint32_t x)
1037 {
1038 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1039 }
1040
1041 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1042 ecb_function_ ecb_const uint64_t
1043 ecb_bswap64 (uint64_t x)
1044 {
1045 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1046 }
1047#endif
1048
1049#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1050 #define ecb_unreachable() __builtin_unreachable ()
1051#else
1052 /* this seems to work fine, but gcc always emits a warning for it :/ */
1053 ecb_inline ecb_noreturn void ecb_unreachable (void);
1054 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1055#endif
1056
1057/* try to tell the compiler that some condition is definitely true */
1058#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1059
1060ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1061ecb_inline ecb_const unsigned char
1062ecb_byteorder_helper (void)
1063{
1064 /* the union code still generates code under pressure in gcc, */
1065 /* but less than using pointers, and always seems to */
1066 /* successfully return a constant. */
1067 /* the reason why we have this horrible preprocessor mess */
1068 /* is to avoid it in all cases, at least on common architectures */
1069 /* or when using a recent enough gcc version (>= 4.6) */
1070#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1071 return 0x44;
1072#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1073 return 0x44;
1074#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1075 return 0x11;
1076#else
1077 union
1078 {
1079 uint32_t i;
1080 uint8_t c;
1081 } u = { 0x11223344 };
1082 return u.c;
1083#endif
1084}
1085
1086ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1087ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1088ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1089ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1090
1091#if ECB_GCC_VERSION(3,0) || ECB_C99
1092 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1093#else
1094 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1095#endif
1096
1097#if ECB_CPP
1098 template<typename T>
1099 static inline T ecb_div_rd (T val, T div)
1100 {
1101 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1102 }
1103 template<typename T>
1104 static inline T ecb_div_ru (T val, T div)
1105 {
1106 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1107 }
1108#else
1109 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1110 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1111#endif
1112
1113#if ecb_cplusplus_does_not_suck
1114 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1115 template<typename T, int N>
1116 static inline int ecb_array_length (const T (&arr)[N])
1117 {
1118 return N;
1119 }
1120#else
1121 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1122#endif
1123
1124/*******************************************************************************/
1125/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1126
1127/* basically, everything uses "ieee pure-endian" floating point numbers */
1128/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1129#if 0 \
1130 || __i386 || __i386__ \
1131 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1132 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1133 || defined __s390__ || defined __s390x__ \
1134 || defined __mips__ \
1135 || defined __alpha__ \
1136 || defined __hppa__ \
1137 || defined __ia64__ \
1138 || defined __m68k__ \
1139 || defined __m88k__ \
1140 || defined __sh__ \
1141 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1142 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1143 || defined __aarch64__
1144 #define ECB_STDFP 1
1145 #include <string.h> /* for memcpy */
1146#else
1147 #define ECB_STDFP 0
1148#endif
1149
1150#ifndef ECB_NO_LIBM
1151
1152 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1153
1154 /* only the oldest of old doesn't have this one. solaris. */
1155 #ifdef INFINITY
1156 #define ECB_INFINITY INFINITY
1157 #else
1158 #define ECB_INFINITY HUGE_VAL
1159 #endif
1160
1161 #ifdef NAN
1162 #define ECB_NAN NAN
1163 #else
1164 #define ECB_NAN ECB_INFINITY
1165 #endif
1166
1167 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1168 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1169 #else
1170 #define ecb_ldexpf(x,e) (float) ldexp ((x), (e))
1171 #endif
1172
1173 /* converts an ieee half/binary16 to a float */
1174 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1175 ecb_function_ ecb_const float
1176 ecb_binary16_to_float (uint16_t x)
1177 {
1178 int e = (x >> 10) & 0x1f;
1179 int m = x & 0x3ff;
1180 float r;
1181
1182 if (!e ) r = ecb_ldexpf (m , -24);
1183 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1184 else if (m ) r = ECB_NAN;
1185 else r = ECB_INFINITY;
1186
1187 return x & 0x8000 ? -r : r;
1188 }
1189
1190 /* convert a float to ieee single/binary32 */
1191 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1192 ecb_function_ ecb_const uint32_t
1193 ecb_float_to_binary32 (float x)
1194 {
1195 uint32_t r;
1196
1197 #if ECB_STDFP
1198 memcpy (&r, &x, 4);
1199 #else
1200 /* slow emulation, works for anything but -0 */
1201 uint32_t m;
1202 int e;
1203
1204 if (x == 0e0f ) return 0x00000000U;
1205 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1206 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1207 if (x != x ) return 0x7fbfffffU;
1208
1209 m = frexpf (x, &e) * 0x1000000U;
1210
1211 r = m & 0x80000000U;
1212
1213 if (r)
1214 m = -m;
1215
1216 if (e <= -126)
1217 {
1218 m &= 0xffffffU;
1219 m >>= (-125 - e);
1220 e = -126;
1221 }
1222
1223 r |= (e + 126) << 23;
1224 r |= m & 0x7fffffU;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* converts an ieee single/binary32 to a float */
1231 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1232 ecb_function_ ecb_const float
1233 ecb_binary32_to_float (uint32_t x)
1234 {
1235 float r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 4);
1239 #else
1240 /* emulation, only works for normals and subnormals and +0 */
1241 int neg = x >> 31;
1242 int e = (x >> 23) & 0xffU;
1243
1244 x &= 0x7fffffU;
1245
1246 if (e)
1247 x |= 0x800000U;
1248 else
1249 e = 1;
1250
1251 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1252 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1253
1254 r = neg ? -r : r;
1255 #endif
1256
1257 return r;
1258 }
1259
1260 /* convert a double to ieee double/binary64 */
1261 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1262 ecb_function_ ecb_const uint64_t
1263 ecb_double_to_binary64 (double x)
1264 {
1265 uint64_t r;
1266
1267 #if ECB_STDFP
1268 memcpy (&r, &x, 8);
1269 #else
1270 /* slow emulation, works for anything but -0 */
1271 uint64_t m;
1272 int e;
1273
1274 if (x == 0e0 ) return 0x0000000000000000U;
1275 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1276 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1277 if (x != x ) return 0X7ff7ffffffffffffU;
1278
1279 m = frexp (x, &e) * 0x20000000000000U;
1280
1281 r = m & 0x8000000000000000;;
1282
1283 if (r)
1284 m = -m;
1285
1286 if (e <= -1022)
1287 {
1288 m &= 0x1fffffffffffffU;
1289 m >>= (-1021 - e);
1290 e = -1022;
1291 }
1292
1293 r |= ((uint64_t)(e + 1022)) << 52;
1294 r |= m & 0xfffffffffffffU;
1295 #endif
1296
1297 return r;
1298 }
1299
1300 /* converts an ieee double/binary64 to a double */
1301 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1302 ecb_function_ ecb_const double
1303 ecb_binary64_to_double (uint64_t x)
1304 {
1305 double r;
1306
1307 #if ECB_STDFP
1308 memcpy (&r, &x, 8);
1309 #else
1310 /* emulation, only works for normals and subnormals and +0 */
1311 int neg = x >> 63;
1312 int e = (x >> 52) & 0x7ffU;
1313
1314 x &= 0xfffffffffffffU;
1315
1316 if (e)
1317 x |= 0x10000000000000U;
1318 else
1319 e = 1;
1320
1321 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1322 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1323
1324 r = neg ? -r : r;
1325 #endif
1326
1327 return r;
1328 }
1329
1330#endif
1331
1332#endif
1333
1334/* ECB.H END */
1335
1336#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1337/* if your architecture doesn't need memory fences, e.g. because it is
1338 * single-cpu/core, or if you use libev in a project that doesn't use libev
1339 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1340 * libev, in which cases the memory fences become nops.
1341 * alternatively, you can remove this #error and link against libpthread,
1342 * which will then provide the memory fences.
1343 */
1344# error "memory fences not defined for your architecture, please report"
1345#endif
1346
1347#ifndef ECB_MEMORY_FENCE
1348# define ECB_MEMORY_FENCE do { } while (0)
1349# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1350# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1351#endif
1352
1353#define expect_false(cond) ecb_expect_false (cond)
1354#define expect_true(cond) ecb_expect_true (cond)
1355#define noinline ecb_noinline
1356
470#define inline_size static inline 1357#define inline_size ecb_inline
471 1358
472#if EV_MINIMAL 1359#if EV_FEATURE_CODE
1360# define inline_speed ecb_inline
1361#else
473# define inline_speed static noinline 1362# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 1363#endif
477 1364
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1365#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1366
480#if EV_MINPRI == EV_MAXPRI 1367#if EV_MINPRI == EV_MAXPRI
… …
493#define ev_active(w) ((W)(w))->active 1380#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1381#define ev_at(w) ((WT)(w))->at
495 1382
496#if EV_USE_REALTIME 1383#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1384/* sig_atomic_t is used to avoid per-thread variables or locking but still */
498/* giving it a reasonably high chance of working on typical architetcures */ 1385/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1386static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1387#endif
501 1388
502#if EV_USE_MONOTONIC 1389#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1390static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
505 1392
506#ifndef EV_FD_TO_WIN32_HANDLE 1393#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1394# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 1395#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 1396#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1397# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 1398#endif
512#ifndef EV_WIN32_CLOSE_FD 1399#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 1400# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 1401#endif
515 1402
… …
517# include "ev_win32.c" 1404# include "ev_win32.c"
518#endif 1405#endif
519 1406
520/*****************************************************************************/ 1407/*****************************************************************************/
521 1408
1409/* define a suitable floor function (only used by periodics atm) */
1410
1411#if EV_USE_FLOOR
1412# include <math.h>
1413# define ev_floor(v) floor (v)
1414#else
1415
1416#include <float.h>
1417
1418/* a floor() replacement function, should be independent of ev_tstamp type */
1419static ev_tstamp noinline
1420ev_floor (ev_tstamp v)
1421{
1422 /* the choice of shift factor is not terribly important */
1423#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1424 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1425#else
1426 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1427#endif
1428
1429 /* argument too large for an unsigned long? */
1430 if (expect_false (v >= shift))
1431 {
1432 ev_tstamp f;
1433
1434 if (v == v - 1.)
1435 return v; /* very large number */
1436
1437 f = shift * ev_floor (v * (1. / shift));
1438 return f + ev_floor (v - f);
1439 }
1440
1441 /* special treatment for negative args? */
1442 if (expect_false (v < 0.))
1443 {
1444 ev_tstamp f = -ev_floor (-v);
1445
1446 return f - (f == v ? 0 : 1);
1447 }
1448
1449 /* fits into an unsigned long */
1450 return (unsigned long)v;
1451}
1452
1453#endif
1454
1455/*****************************************************************************/
1456
1457#ifdef __linux
1458# include <sys/utsname.h>
1459#endif
1460
1461static unsigned int noinline ecb_cold
1462ev_linux_version (void)
1463{
1464#ifdef __linux
1465 unsigned int v = 0;
1466 struct utsname buf;
1467 int i;
1468 char *p = buf.release;
1469
1470 if (uname (&buf))
1471 return 0;
1472
1473 for (i = 3+1; --i; )
1474 {
1475 unsigned int c = 0;
1476
1477 for (;;)
1478 {
1479 if (*p >= '0' && *p <= '9')
1480 c = c * 10 + *p++ - '0';
1481 else
1482 {
1483 p += *p == '.';
1484 break;
1485 }
1486 }
1487
1488 v = (v << 8) | c;
1489 }
1490
1491 return v;
1492#else
1493 return 0;
1494#endif
1495}
1496
1497/*****************************************************************************/
1498
1499#if EV_AVOID_STDIO
1500static void noinline ecb_cold
1501ev_printerr (const char *msg)
1502{
1503 write (STDERR_FILENO, msg, strlen (msg));
1504}
1505#endif
1506
522static void (*syserr_cb)(const char *msg); 1507static void (*syserr_cb)(const char *msg) EV_THROW;
523 1508
524void 1509void ecb_cold
525ev_set_syserr_cb (void (*cb)(const char *msg)) 1510ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
526{ 1511{
527 syserr_cb = cb; 1512 syserr_cb = cb;
528} 1513}
529 1514
530static void noinline 1515static void noinline ecb_cold
531ev_syserr (const char *msg) 1516ev_syserr (const char *msg)
532{ 1517{
533 if (!msg) 1518 if (!msg)
534 msg = "(libev) system error"; 1519 msg = "(libev) system error";
535 1520
536 if (syserr_cb) 1521 if (syserr_cb)
537 syserr_cb (msg); 1522 syserr_cb (msg);
538 else 1523 else
539 { 1524 {
1525#if EV_AVOID_STDIO
1526 ev_printerr (msg);
1527 ev_printerr (": ");
1528 ev_printerr (strerror (errno));
1529 ev_printerr ("\n");
1530#else
540 perror (msg); 1531 perror (msg);
1532#endif
541 abort (); 1533 abort ();
542 } 1534 }
543} 1535}
544 1536
545static void * 1537static void *
546ev_realloc_emul (void *ptr, long size) 1538ev_realloc_emul (void *ptr, long size) EV_THROW
547{ 1539{
548 /* some systems, notably openbsd and darwin, fail to properly 1540 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1541 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1542 * the single unix specification, so work around them here.
1543 * recently, also (at least) fedora and debian started breaking it,
1544 * despite documenting it otherwise.
551 */ 1545 */
552 1546
553 if (size) 1547 if (size)
554 return realloc (ptr, size); 1548 return realloc (ptr, size);
555 1549
556 free (ptr); 1550 free (ptr);
557 return 0; 1551 return 0;
558} 1552}
559 1553
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1554static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
561 1555
562void 1556void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1557ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
564{ 1558{
565 alloc = cb; 1559 alloc = cb;
566} 1560}
567 1561
568inline_speed void * 1562inline_speed void *
… …
570{ 1564{
571 ptr = alloc (ptr, size); 1565 ptr = alloc (ptr, size);
572 1566
573 if (!ptr && size) 1567 if (!ptr && size)
574 { 1568 {
1569#if EV_AVOID_STDIO
1570 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1571#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1572 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1573#endif
576 abort (); 1574 abort ();
577 } 1575 }
578 1576
579 return ptr; 1577 return ptr;
580} 1578}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1594 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 1595 unsigned char unused;
598#if EV_USE_EPOLL 1596#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1597 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1598#endif
601#if EV_SELECT_IS_WINSOCKET 1599#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1600 SOCKET handle;
1601#endif
1602#if EV_USE_IOCP
1603 OVERLAPPED or, ow;
603#endif 1604#endif
604} ANFD; 1605} ANFD;
605 1606
606/* stores the pending event set for a given watcher */ 1607/* stores the pending event set for a given watcher */
607typedef struct 1608typedef struct
… …
649 #undef VAR 1650 #undef VAR
650 }; 1651 };
651 #include "ev_wrap.h" 1652 #include "ev_wrap.h"
652 1653
653 static struct ev_loop default_loop_struct; 1654 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 1655 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 1656
656#else 1657#else
657 1658
658 ev_tstamp ev_rt_now; 1659 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 1660 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 1661 #include "ev_vars.h"
661 #undef VAR 1662 #undef VAR
662 1663
663 static int ev_default_loop_ptr; 1664 static int ev_default_loop_ptr;
664 1665
665#endif 1666#endif
666 1667
667#if EV_MINIMAL < 2 1668#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1669# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1670# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 1671# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 1672#else
672# define EV_RELEASE_CB (void)0 1673# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 1674# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1675# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 1676#endif
676 1677
677#define EVUNLOOP_RECURSE 0x80 1678#define EVBREAK_RECURSE 0x80
678 1679
679/*****************************************************************************/ 1680/*****************************************************************************/
680 1681
681#ifndef EV_HAVE_EV_TIME 1682#ifndef EV_HAVE_EV_TIME
682ev_tstamp 1683ev_tstamp
683ev_time (void) 1684ev_time (void) EV_THROW
684{ 1685{
685#if EV_USE_REALTIME 1686#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 1687 if (expect_true (have_realtime))
687 { 1688 {
688 struct timespec ts; 1689 struct timespec ts;
… …
712 return ev_time (); 1713 return ev_time ();
713} 1714}
714 1715
715#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
716ev_tstamp 1717ev_tstamp
717ev_now (EV_P) 1718ev_now (EV_P) EV_THROW
718{ 1719{
719 return ev_rt_now; 1720 return ev_rt_now;
720} 1721}
721#endif 1722#endif
722 1723
723void 1724void
724ev_sleep (ev_tstamp delay) 1725ev_sleep (ev_tstamp delay) EV_THROW
725{ 1726{
726 if (delay > 0.) 1727 if (delay > 0.)
727 { 1728 {
728#if EV_USE_NANOSLEEP 1729#if EV_USE_NANOSLEEP
729 struct timespec ts; 1730 struct timespec ts;
730 1731
731 ts.tv_sec = (time_t)delay; 1732 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 1733 nanosleep (&ts, 0);
735#elif defined(_WIN32) 1734#elif defined _WIN32
736 Sleep ((unsigned long)(delay * 1e3)); 1735 Sleep ((unsigned long)(delay * 1e3));
737#else 1736#else
738 struct timeval tv; 1737 struct timeval tv;
739 1738
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1739 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 1740 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 1741 /* by older ones */
1742 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 1743 select (0, 0, 0, 0, &tv);
747#endif 1744#endif
748 } 1745 }
749} 1746}
750 1747
751/*****************************************************************************/ 1748/*****************************************************************************/
752 1749
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1750#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 1751
755/* find a suitable new size for the given array, */ 1752/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 1753/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 1754inline_size int
758array_nextsize (int elem, int cur, int cnt) 1755array_nextsize (int elem, int cur, int cnt)
759{ 1756{
760 int ncur = cur + 1; 1757 int ncur = cur + 1;
761 1758
762 do 1759 do
763 ncur <<= 1; 1760 ncur <<= 1;
764 while (cnt > ncur); 1761 while (cnt > ncur);
765 1762
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1763 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1764 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 1765 {
769 ncur *= elem; 1766 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1767 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 1768 ncur = ncur - sizeof (void *) * 4;
… …
773 } 1770 }
774 1771
775 return ncur; 1772 return ncur;
776} 1773}
777 1774
778static noinline void * 1775static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 1776array_realloc (int elem, void *base, int *cur, int cnt)
780{ 1777{
781 *cur = array_nextsize (elem, *cur, cnt); 1778 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 1779 return ev_realloc (base, elem * *cur);
783} 1780}
… …
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1783 memset ((void *)(base), 0, sizeof (*(base)) * (count))
787 1784
788#define array_needsize(type,base,cur,cnt,init) \ 1785#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 1786 if (expect_false ((cnt) > (cur))) \
790 { \ 1787 { \
791 int ocur_ = (cur); \ 1788 int ecb_unused ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 1789 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 1790 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 1791 init ((base) + (ocur_), (cur) - ocur_); \
795 } 1792 }
796 1793
… …
814pendingcb (EV_P_ ev_prepare *w, int revents) 1811pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 1812{
816} 1813}
817 1814
818void noinline 1815void noinline
819ev_feed_event (EV_P_ void *w, int revents) 1816ev_feed_event (EV_P_ void *w, int revents) EV_THROW
820{ 1817{
821 W w_ = (W)w; 1818 W w_ = (W)w;
822 int pri = ABSPRI (w_); 1819 int pri = ABSPRI (w_);
823 1820
824 if (expect_false (w_->pending)) 1821 if (expect_false (w_->pending))
… …
828 w_->pending = ++pendingcnt [pri]; 1825 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1826 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
830 pendings [pri][w_->pending - 1].w = w_; 1827 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 1828 pendings [pri][w_->pending - 1].events = revents;
832 } 1829 }
1830
1831 pendingpri = NUMPRI - 1;
833} 1832}
834 1833
835inline_speed void 1834inline_speed void
836feed_reverse (EV_P_ W w) 1835feed_reverse (EV_P_ W w)
837{ 1836{
… …
857} 1856}
858 1857
859/*****************************************************************************/ 1858/*****************************************************************************/
860 1859
861inline_speed void 1860inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1861fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1862{
864 ANFD *anfd = anfds + fd; 1863 ANFD *anfd = anfds + fd;
865 ev_io *w; 1864 ev_io *w;
866 1865
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1878fd_event (EV_P_ int fd, int revents)
880{ 1879{
881 ANFD *anfd = anfds + fd; 1880 ANFD *anfd = anfds + fd;
882 1881
883 if (expect_true (!anfd->reify)) 1882 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1883 fd_event_nocheck (EV_A_ fd, revents);
885} 1884}
886 1885
887void 1886void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1887ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
889{ 1888{
890 if (fd >= 0 && fd < anfdmax) 1889 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1890 fd_event_nocheck (EV_A_ fd, revents);
892} 1891}
893 1892
894/* make sure the external fd watch events are in-sync */ 1893/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1894/* with the kernel/libev internal state */
896inline_size void 1895inline_size void
897fd_reify (EV_P) 1896fd_reify (EV_P)
898{ 1897{
899 int i; 1898 int i;
900 1899
1900#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1901 for (i = 0; i < fdchangecnt; ++i)
1902 {
1903 int fd = fdchanges [i];
1904 ANFD *anfd = anfds + fd;
1905
1906 if (anfd->reify & EV__IOFDSET && anfd->head)
1907 {
1908 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1909
1910 if (handle != anfd->handle)
1911 {
1912 unsigned long arg;
1913
1914 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1915
1916 /* handle changed, but fd didn't - we need to do it in two steps */
1917 backend_modify (EV_A_ fd, anfd->events, 0);
1918 anfd->events = 0;
1919 anfd->handle = handle;
1920 }
1921 }
1922 }
1923#endif
1924
901 for (i = 0; i < fdchangecnt; ++i) 1925 for (i = 0; i < fdchangecnt; ++i)
902 { 1926 {
903 int fd = fdchanges [i]; 1927 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1928 ANFD *anfd = anfds + fd;
905 ev_io *w; 1929 ev_io *w;
906 1930
907 unsigned char events = 0; 1931 unsigned char o_events = anfd->events;
1932 unsigned char o_reify = anfd->reify;
908 1933
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1934 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1935
912#if EV_SELECT_IS_WINSOCKET 1936 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1937 {
915 unsigned long arg; 1938 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1939
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1940 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1941 anfd->events |= (unsigned char)w->events;
1942
1943 if (o_events != anfd->events)
1944 o_reify = EV__IOFDSET; /* actually |= */
918 } 1945 }
919#endif
920 1946
921 { 1947 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 1948 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1949 }
932 1950
933 fdchangecnt = 0; 1951 fdchangecnt = 0;
934} 1952}
935 1953
… …
947 fdchanges [fdchangecnt - 1] = fd; 1965 fdchanges [fdchangecnt - 1] = fd;
948 } 1966 }
949} 1967}
950 1968
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1969/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1970inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1971fd_kill (EV_P_ int fd)
954{ 1972{
955 ev_io *w; 1973 ev_io *w;
956 1974
957 while ((w = (ev_io *)anfds [fd].head)) 1975 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1977 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1978 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1979 }
962} 1980}
963 1981
964/* check whether the given fd is atcually valid, for error recovery */ 1982/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1983inline_size int ecb_cold
966fd_valid (int fd) 1984fd_valid (int fd)
967{ 1985{
968#ifdef _WIN32 1986#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 1987 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1988#else
971 return fcntl (fd, F_GETFD) != -1; 1989 return fcntl (fd, F_GETFD) != -1;
972#endif 1990#endif
973} 1991}
974 1992
975/* called on EBADF to verify fds */ 1993/* called on EBADF to verify fds */
976static void noinline 1994static void noinline ecb_cold
977fd_ebadf (EV_P) 1995fd_ebadf (EV_P)
978{ 1996{
979 int fd; 1997 int fd;
980 1998
981 for (fd = 0; fd < anfdmax; ++fd) 1999 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 2001 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 2002 fd_kill (EV_A_ fd);
985} 2003}
986 2004
987/* called on ENOMEM in select/poll to kill some fds and retry */ 2005/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 2006static void noinline ecb_cold
989fd_enomem (EV_P) 2007fd_enomem (EV_P)
990{ 2008{
991 int fd; 2009 int fd;
992 2010
993 for (fd = anfdmax; fd--; ) 2011 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 2029 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2030 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 2031 }
1014} 2032}
1015 2033
2034/* used to prepare libev internal fd's */
2035/* this is not fork-safe */
2036inline_speed void
2037fd_intern (int fd)
2038{
2039#ifdef _WIN32
2040 unsigned long arg = 1;
2041 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2042#else
2043 fcntl (fd, F_SETFD, FD_CLOEXEC);
2044 fcntl (fd, F_SETFL, O_NONBLOCK);
2045#endif
2046}
2047
1016/*****************************************************************************/ 2048/*****************************************************************************/
1017 2049
1018/* 2050/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 2051 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2052 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 2053 * the branching factor of the d-tree.
1022 */ 2054 */
1023 2055
1024/* 2056/*
… …
1172 2204
1173static ANSIG signals [EV_NSIG - 1]; 2205static ANSIG signals [EV_NSIG - 1];
1174 2206
1175/*****************************************************************************/ 2207/*****************************************************************************/
1176 2208
1177/* used to prepare libev internal fd's */ 2209#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */ 2210
2211static void noinline ecb_cold
2212evpipe_init (EV_P)
2213{
2214 if (!ev_is_active (&pipe_w))
2215 {
2216 int fds [2];
2217
2218# if EV_USE_EVENTFD
2219 fds [0] = -1;
2220 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2221 if (fds [1] < 0 && errno == EINVAL)
2222 fds [1] = eventfd (0, 0);
2223
2224 if (fds [1] < 0)
2225# endif
2226 {
2227 while (pipe (fds))
2228 ev_syserr ("(libev) error creating signal/async pipe");
2229
2230 fd_intern (fds [0]);
2231 }
2232
2233 evpipe [0] = fds [0];
2234
2235 if (evpipe [1] < 0)
2236 evpipe [1] = fds [1]; /* first call, set write fd */
2237 else
2238 {
2239 /* on subsequent calls, do not change evpipe [1] */
2240 /* so that evpipe_write can always rely on its value. */
2241 /* this branch does not do anything sensible on windows, */
2242 /* so must not be executed on windows */
2243
2244 dup2 (fds [1], evpipe [1]);
2245 close (fds [1]);
2246 }
2247
2248 fd_intern (evpipe [1]);
2249
2250 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2251 ev_io_start (EV_A_ &pipe_w);
2252 ev_unref (EV_A); /* watcher should not keep loop alive */
2253 }
2254}
2255
1179inline_speed void 2256inline_speed void
1180fd_intern (int fd) 2257evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1181{ 2258{
1182#ifdef _WIN32 2259 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1183 unsigned long arg = 1;
1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 2260
1191static void noinline 2261 if (expect_true (*flag))
1192evpipe_init (EV_P) 2262 return;
1193{ 2263
1194 if (!ev_is_active (&pipe_w)) 2264 *flag = 1;
2265 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2266
2267 pipe_write_skipped = 1;
2268
2269 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2270
2271 if (pipe_write_wanted)
1195 { 2272 {
2273 int old_errno;
2274
2275 pipe_write_skipped = 0;
2276 ECB_MEMORY_FENCE_RELEASE;
2277
2278 old_errno = errno; /* save errno because write will clobber it */
2279
1196#if EV_USE_EVENTFD 2280#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2281 if (evpipe [0] < 0)
1198 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
1202 { 2282 {
1203 evpipe [0] = -1; 2283 uint64_t counter = 1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 2284 write (evpipe [1], &counter, sizeof (uint64_t));
1205 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 2285 }
1207 else 2286 else
1208#endif 2287#endif
1209 { 2288 {
1210 while (pipe (evpipe)) 2289#ifdef _WIN32
1211 ev_syserr ("(libev) error creating signal/async pipe"); 2290 WSABUF buf;
1212 2291 DWORD sent;
1213 fd_intern (evpipe [0]); 2292 buf.buf = &buf;
1214 fd_intern (evpipe [1]); 2293 buf.len = 1;
1215 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2294 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2295#else
2296 write (evpipe [1], &(evpipe [1]), 1);
2297#endif
1216 } 2298 }
1217
1218 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 }
1221}
1222
1223inline_size void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{
1226 if (!*flag)
1227 {
1228 int old_errno = errno; /* save errno because write might clobber it */
1229
1230 *flag = 1;
1231
1232#if EV_USE_EVENTFD
1233 if (evfd >= 0)
1234 {
1235 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t));
1237 }
1238 else
1239#endif
1240 write (evpipe [1], &old_errno, 1);
1241 2299
1242 errno = old_errno; 2300 errno = old_errno;
1243 } 2301 }
1244} 2302}
1245 2303
… …
1248static void 2306static void
1249pipecb (EV_P_ ev_io *iow, int revents) 2307pipecb (EV_P_ ev_io *iow, int revents)
1250{ 2308{
1251 int i; 2309 int i;
1252 2310
2311 if (revents & EV_READ)
2312 {
1253#if EV_USE_EVENTFD 2313#if EV_USE_EVENTFD
1254 if (evfd >= 0) 2314 if (evpipe [0] < 0)
1255 { 2315 {
1256 uint64_t counter; 2316 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 2317 read (evpipe [1], &counter, sizeof (uint64_t));
1258 } 2318 }
1259 else 2319 else
1260#endif 2320#endif
1261 { 2321 {
1262 char dummy; 2322 char dummy[4];
2323#ifdef _WIN32
2324 WSABUF buf;
2325 DWORD recvd;
2326 DWORD flags = 0;
2327 buf.buf = dummy;
2328 buf.len = sizeof (dummy);
2329 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2330#else
1263 read (evpipe [0], &dummy, 1); 2331 read (evpipe [0], &dummy, sizeof (dummy));
2332#endif
2333 }
1264 } 2334 }
1265 2335
2336 pipe_write_skipped = 0;
2337
2338 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2339
2340#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 2341 if (sig_pending)
1267 { 2342 {
1268 sig_pending = 0; 2343 sig_pending = 0;
2344
2345 ECB_MEMORY_FENCE;
1269 2346
1270 for (i = EV_NSIG - 1; i--; ) 2347 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 2348 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 2349 ev_feed_signal_event (EV_A_ i + 1);
1273 } 2350 }
2351#endif
1274 2352
1275#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1276 if (async_pending) 2354 if (async_pending)
1277 { 2355 {
1278 async_pending = 0; 2356 async_pending = 0;
2357
2358 ECB_MEMORY_FENCE;
1279 2359
1280 for (i = asynccnt; i--; ) 2360 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2361 if (asyncs [i]->sent)
1282 { 2362 {
1283 asyncs [i]->sent = 0; 2363 asyncs [i]->sent = 0;
2364 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2365 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2366 }
1286 } 2367 }
1287#endif 2368#endif
1288} 2369}
1289 2370
1290/*****************************************************************************/ 2371/*****************************************************************************/
1291 2372
2373void
2374ev_feed_signal (int signum) EV_THROW
2375{
2376#if EV_MULTIPLICITY
2377 EV_P;
2378 ECB_MEMORY_FENCE_ACQUIRE;
2379 EV_A = signals [signum - 1].loop;
2380
2381 if (!EV_A)
2382 return;
2383#endif
2384
2385 signals [signum - 1].pending = 1;
2386 evpipe_write (EV_A_ &sig_pending);
2387}
2388
1292static void 2389static void
1293ev_sighandler (int signum) 2390ev_sighandler (int signum)
1294{ 2391{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#if _WIN32 2392#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2393 signal (signum, ev_sighandler);
1301#endif 2394#endif
1302 2395
1303 signals [signum - 1].pending = 1; 2396 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2397}
1306 2398
1307void noinline 2399void noinline
1308ev_feed_signal_event (EV_P_ int signum) 2400ev_feed_signal_event (EV_P_ int signum) EV_THROW
1309{ 2401{
1310 WL w; 2402 WL w;
1311 2403
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2404 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1313 return; 2405 return;
1314 2406
1315 --signum; 2407 --signum;
1316 2408
1317#if EV_MULTIPLICITY 2409#if EV_MULTIPLICITY
… …
1321 if (expect_false (signals [signum].loop != EV_A)) 2413 if (expect_false (signals [signum].loop != EV_A))
1322 return; 2414 return;
1323#endif 2415#endif
1324 2416
1325 signals [signum].pending = 0; 2417 signals [signum].pending = 0;
2418 ECB_MEMORY_FENCE_RELEASE;
1326 2419
1327 for (w = signals [signum].head; w; w = w->next) 2420 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2421 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2422}
1330 2423
… …
1346 break; 2439 break;
1347 } 2440 }
1348} 2441}
1349#endif 2442#endif
1350 2443
2444#endif
2445
1351/*****************************************************************************/ 2446/*****************************************************************************/
1352 2447
2448#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2449static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2450
1357static ev_signal childev; 2451static ev_signal childev;
1358 2452
1359#ifndef WIFCONTINUED 2453#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2454# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2459child_reap (EV_P_ int chain, int pid, int status)
1366{ 2460{
1367 ev_child *w; 2461 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2462 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2463
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2464 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2465 {
1372 if ((w->pid == pid || !w->pid) 2466 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2467 && (!traced || (w->flags & 1)))
1374 { 2468 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2469 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 2494 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 2495 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2496 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2497
1404 child_reap (EV_A_ pid, pid, status); 2498 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2499 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2500 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2501}
1408 2502
1409#endif 2503#endif
1410 2504
1411/*****************************************************************************/ 2505/*****************************************************************************/
1412 2506
2507#if EV_USE_IOCP
2508# include "ev_iocp.c"
2509#endif
1413#if EV_USE_PORT 2510#if EV_USE_PORT
1414# include "ev_port.c" 2511# include "ev_port.c"
1415#endif 2512#endif
1416#if EV_USE_KQUEUE 2513#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2514# include "ev_kqueue.c"
… …
1424#endif 2521#endif
1425#if EV_USE_SELECT 2522#if EV_USE_SELECT
1426# include "ev_select.c" 2523# include "ev_select.c"
1427#endif 2524#endif
1428 2525
1429int 2526int ecb_cold
1430ev_version_major (void) 2527ev_version_major (void) EV_THROW
1431{ 2528{
1432 return EV_VERSION_MAJOR; 2529 return EV_VERSION_MAJOR;
1433} 2530}
1434 2531
1435int 2532int ecb_cold
1436ev_version_minor (void) 2533ev_version_minor (void) EV_THROW
1437{ 2534{
1438 return EV_VERSION_MINOR; 2535 return EV_VERSION_MINOR;
1439} 2536}
1440 2537
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2538/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2539int inline_size ecb_cold
1443enable_secure (void) 2540enable_secure (void)
1444{ 2541{
1445#ifdef _WIN32 2542#ifdef _WIN32
1446 return 0; 2543 return 0;
1447#else 2544#else
1448 return getuid () != geteuid () 2545 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2546 || getgid () != getegid ();
1450#endif 2547#endif
1451} 2548}
1452 2549
1453unsigned int 2550unsigned int ecb_cold
1454ev_supported_backends (void) 2551ev_supported_backends (void) EV_THROW
1455{ 2552{
1456 unsigned int flags = 0; 2553 unsigned int flags = 0;
1457 2554
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2555 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2556 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2559 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 2560
1464 return flags; 2561 return flags;
1465} 2562}
1466 2563
1467unsigned int 2564unsigned int ecb_cold
1468ev_recommended_backends (void) 2565ev_recommended_backends (void) EV_THROW
1469{ 2566{
1470 unsigned int flags = ev_supported_backends (); 2567 unsigned int flags = ev_supported_backends ();
1471 2568
1472#ifndef __NetBSD__ 2569#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 2570 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 2574#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 2575 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2576 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2577 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 2578#endif
2579#ifdef __FreeBSD__
2580 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2581#endif
1482 2582
1483 return flags; 2583 return flags;
1484} 2584}
1485 2585
2586unsigned int ecb_cold
2587ev_embeddable_backends (void) EV_THROW
2588{
2589 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2590
2591 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2592 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2593 flags &= ~EVBACKEND_EPOLL;
2594
2595 return flags;
2596}
2597
1486unsigned int 2598unsigned int
1487ev_embeddable_backends (void) 2599ev_backend (EV_P) EV_THROW
1488{ 2600{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2601 return backend;
1490
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */
1493 flags &= ~EVBACKEND_EPOLL;
1494
1495 return flags;
1496} 2602}
1497 2603
2604#if EV_FEATURE_API
1498unsigned int 2605unsigned int
1499ev_backend (EV_P) 2606ev_iteration (EV_P) EV_THROW
1500{ 2607{
1501 return backend; 2608 return loop_count;
1502} 2609}
1503 2610
1504#if EV_MINIMAL < 2
1505unsigned int 2611unsigned int
1506ev_loop_count (EV_P) 2612ev_depth (EV_P) EV_THROW
1507{
1508 return loop_count;
1509}
1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{ 2613{
1514 return loop_depth; 2614 return loop_depth;
1515} 2615}
1516 2616
1517void 2617void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2618ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1519{ 2619{
1520 io_blocktime = interval; 2620 io_blocktime = interval;
1521} 2621}
1522 2622
1523void 2623void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2624ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2625{
1526 timeout_blocktime = interval; 2626 timeout_blocktime = interval;
1527} 2627}
1528 2628
1529void 2629void
1530ev_set_userdata (EV_P_ void *data) 2630ev_set_userdata (EV_P_ void *data) EV_THROW
1531{ 2631{
1532 userdata = data; 2632 userdata = data;
1533} 2633}
1534 2634
1535void * 2635void *
1536ev_userdata (EV_P) 2636ev_userdata (EV_P) EV_THROW
1537{ 2637{
1538 return userdata; 2638 return userdata;
1539} 2639}
1540 2640
2641void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2642ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1542{ 2643{
1543 invoke_cb = invoke_pending_cb; 2644 invoke_cb = invoke_pending_cb;
1544} 2645}
1545 2646
2647void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2648ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1547{ 2649{
1548 release_cb = release; 2650 release_cb = release;
1549 acquire_cb = acquire; 2651 acquire_cb = acquire;
1550} 2652}
1551#endif 2653#endif
1552 2654
1553/* initialise a loop structure, must be zero-initialised */ 2655/* initialise a loop structure, must be zero-initialised */
1554static void noinline 2656static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 2657loop_init (EV_P_ unsigned int flags) EV_THROW
1556{ 2658{
1557 if (!backend) 2659 if (!backend)
1558 { 2660 {
2661 origflags = flags;
2662
1559#if EV_USE_REALTIME 2663#if EV_USE_REALTIME
1560 if (!have_realtime) 2664 if (!have_realtime)
1561 { 2665 {
1562 struct timespec ts; 2666 struct timespec ts;
1563 2667
… …
1585 if (!(flags & EVFLAG_NOENV) 2689 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 2690 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 2691 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 2692 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 2693
1590 ev_rt_now = ev_time (); 2694 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 2695 mn_now = get_clock ();
1592 now_floor = mn_now; 2696 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 2697 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 2698#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 2699 invoke_cb = ev_invoke_pending;
1596#endif 2700#endif
1597 2701
1598 io_blocktime = 0.; 2702 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 2703 timeout_blocktime = 0.;
1600 backend = 0; 2704 backend = 0;
1601 backend_fd = -1; 2705 backend_fd = -1;
1602 sig_pending = 0; 2706 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 2707#if EV_ASYNC_ENABLE
1604 async_pending = 0; 2708 async_pending = 0;
1605#endif 2709#endif
2710 pipe_write_skipped = 0;
2711 pipe_write_wanted = 0;
2712 evpipe [0] = -1;
2713 evpipe [1] = -1;
1606#if EV_USE_INOTIFY 2714#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2715 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 2716#endif
1609#if EV_USE_SIGNALFD 2717#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 2719#endif
1612 2720
1613 if (!(flags & 0x0000ffffU)) 2721 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 2722 flags |= ev_recommended_backends ();
1615 2723
2724#if EV_USE_IOCP
2725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2726#endif
1616#if EV_USE_PORT 2727#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 2729#endif
1619#if EV_USE_KQUEUE 2730#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2740 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 2741#endif
1631 2742
1632 ev_prepare_init (&pending_w, pendingcb); 2743 ev_prepare_init (&pending_w, pendingcb);
1633 2744
2745#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 2746 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 2747 ev_set_priority (&pipe_w, EV_MAXPRI);
2748#endif
1636 } 2749 }
1637} 2750}
1638 2751
1639/* free up a loop structure */ 2752/* free up a loop structure */
1640static void noinline 2753void ecb_cold
1641loop_destroy (EV_P) 2754ev_loop_destroy (EV_P)
1642{ 2755{
1643 int i; 2756 int i;
2757
2758#if EV_MULTIPLICITY
2759 /* mimic free (0) */
2760 if (!EV_A)
2761 return;
2762#endif
2763
2764#if EV_CLEANUP_ENABLE
2765 /* queue cleanup watchers (and execute them) */
2766 if (expect_false (cleanupcnt))
2767 {
2768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2769 EV_INVOKE_PENDING;
2770 }
2771#endif
2772
2773#if EV_CHILD_ENABLE
2774 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2775 {
2776 ev_ref (EV_A); /* child watcher */
2777 ev_signal_stop (EV_A_ &childev);
2778 }
2779#endif
1644 2780
1645 if (ev_is_active (&pipe_w)) 2781 if (ev_is_active (&pipe_w))
1646 { 2782 {
1647 /*ev_ref (EV_A);*/ 2783 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 2784 /*ev_io_stop (EV_A_ &pipe_w);*/
1649 2785
1650#if EV_USE_EVENTFD
1651 if (evfd >= 0)
1652 close (evfd);
1653#endif
1654
1655 if (evpipe [0] >= 0)
1656 {
1657 EV_WIN32_CLOSE_FD (evpipe [0]); 2786 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1658 EV_WIN32_CLOSE_FD (evpipe [1]); 2787 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1659 }
1660 } 2788 }
1661 2789
1662#if EV_USE_SIGNALFD 2790#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 2791 if (ev_is_active (&sigfd_w))
1664 {
1665 /*ev_ref (EV_A);*/
1666 /*ev_io_stop (EV_A_ &sigfd_w);*/
1667
1668 close (sigfd); 2792 close (sigfd);
1669 }
1670#endif 2793#endif
1671 2794
1672#if EV_USE_INOTIFY 2795#if EV_USE_INOTIFY
1673 if (fs_fd >= 0) 2796 if (fs_fd >= 0)
1674 close (fs_fd); 2797 close (fs_fd);
1675#endif 2798#endif
1676 2799
1677 if (backend_fd >= 0) 2800 if (backend_fd >= 0)
1678 close (backend_fd); 2801 close (backend_fd);
1679 2802
2803#if EV_USE_IOCP
2804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2805#endif
1680#if EV_USE_PORT 2806#if EV_USE_PORT
1681 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1682#endif 2808#endif
1683#if EV_USE_KQUEUE 2809#if EV_USE_KQUEUE
1684 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1711 array_free (periodic, EMPTY); 2837 array_free (periodic, EMPTY);
1712#endif 2838#endif
1713#if EV_FORK_ENABLE 2839#if EV_FORK_ENABLE
1714 array_free (fork, EMPTY); 2840 array_free (fork, EMPTY);
1715#endif 2841#endif
2842#if EV_CLEANUP_ENABLE
2843 array_free (cleanup, EMPTY);
2844#endif
1716 array_free (prepare, EMPTY); 2845 array_free (prepare, EMPTY);
1717 array_free (check, EMPTY); 2846 array_free (check, EMPTY);
1718#if EV_ASYNC_ENABLE 2847#if EV_ASYNC_ENABLE
1719 array_free (async, EMPTY); 2848 array_free (async, EMPTY);
1720#endif 2849#endif
1721 2850
1722 backend = 0; 2851 backend = 0;
2852
2853#if EV_MULTIPLICITY
2854 if (ev_is_default_loop (EV_A))
2855#endif
2856 ev_default_loop_ptr = 0;
2857#if EV_MULTIPLICITY
2858 else
2859 ev_free (EV_A);
2860#endif
1723} 2861}
1724 2862
1725#if EV_USE_INOTIFY 2863#if EV_USE_INOTIFY
1726inline_size void infy_fork (EV_P); 2864inline_size void infy_fork (EV_P);
1727#endif 2865#endif
… …
1740#endif 2878#endif
1741#if EV_USE_INOTIFY 2879#if EV_USE_INOTIFY
1742 infy_fork (EV_A); 2880 infy_fork (EV_A);
1743#endif 2881#endif
1744 2882
2883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1745 if (ev_is_active (&pipe_w)) 2884 if (ev_is_active (&pipe_w))
1746 { 2885 {
1747 /* this "locks" the handlers against writing to the pipe */ 2886 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1748 /* while we modify the fd vars */
1749 sig_pending = 1;
1750#if EV_ASYNC_ENABLE
1751 async_pending = 1;
1752#endif
1753 2887
1754 ev_ref (EV_A); 2888 ev_ref (EV_A);
1755 ev_io_stop (EV_A_ &pipe_w); 2889 ev_io_stop (EV_A_ &pipe_w);
1756 2890
1757#if EV_USE_EVENTFD
1758 if (evfd >= 0)
1759 close (evfd);
1760#endif
1761
1762 if (evpipe [0] >= 0) 2891 if (evpipe [0] >= 0)
1763 {
1764 EV_WIN32_CLOSE_FD (evpipe [0]); 2892 EV_WIN32_CLOSE_FD (evpipe [0]);
1765 EV_WIN32_CLOSE_FD (evpipe [1]);
1766 }
1767 2893
1768 evpipe_init (EV_A); 2894 evpipe_init (EV_A);
1769 /* now iterate over everything, in case we missed something */ 2895 /* iterate over everything, in case we missed something before */
1770 pipecb (EV_A_ &pipe_w, EV_READ); 2896 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1771 } 2897 }
2898#endif
1772 2899
1773 postfork = 0; 2900 postfork = 0;
1774} 2901}
1775 2902
1776#if EV_MULTIPLICITY 2903#if EV_MULTIPLICITY
1777 2904
1778struct ev_loop * 2905struct ev_loop * ecb_cold
1779ev_loop_new (unsigned int flags) 2906ev_loop_new (unsigned int flags) EV_THROW
1780{ 2907{
1781 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2908 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1782 2909
1783 memset (EV_A, 0, sizeof (struct ev_loop)); 2910 memset (EV_A, 0, sizeof (struct ev_loop));
1784 loop_init (EV_A_ flags); 2911 loop_init (EV_A_ flags);
1785 2912
1786 if (ev_backend (EV_A)) 2913 if (ev_backend (EV_A))
1787 return EV_A; 2914 return EV_A;
1788 2915
2916 ev_free (EV_A);
1789 return 0; 2917 return 0;
1790} 2918}
1791 2919
1792void
1793ev_loop_destroy (EV_P)
1794{
1795 loop_destroy (EV_A);
1796 ev_free (loop);
1797}
1798
1799void
1800ev_loop_fork (EV_P)
1801{
1802 postfork = 1; /* must be in line with ev_default_fork */
1803}
1804#endif /* multiplicity */ 2920#endif /* multiplicity */
1805 2921
1806#if EV_VERIFY 2922#if EV_VERIFY
1807static void noinline 2923static void noinline ecb_cold
1808verify_watcher (EV_P_ W w) 2924verify_watcher (EV_P_ W w)
1809{ 2925{
1810 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2926 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1811 2927
1812 if (w->pending) 2928 if (w->pending)
1813 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2929 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1814} 2930}
1815 2931
1816static void noinline 2932static void noinline ecb_cold
1817verify_heap (EV_P_ ANHE *heap, int N) 2933verify_heap (EV_P_ ANHE *heap, int N)
1818{ 2934{
1819 int i; 2935 int i;
1820 2936
1821 for (i = HEAP0; i < N + HEAP0; ++i) 2937 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1826 2942
1827 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2943 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1828 } 2944 }
1829} 2945}
1830 2946
1831static void noinline 2947static void noinline ecb_cold
1832array_verify (EV_P_ W *ws, int cnt) 2948array_verify (EV_P_ W *ws, int cnt)
1833{ 2949{
1834 while (cnt--) 2950 while (cnt--)
1835 { 2951 {
1836 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2952 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1837 verify_watcher (EV_A_ ws [cnt]); 2953 verify_watcher (EV_A_ ws [cnt]);
1838 } 2954 }
1839} 2955}
1840#endif 2956#endif
1841 2957
1842#if EV_MINIMAL < 2 2958#if EV_FEATURE_API
1843void 2959void ecb_cold
1844ev_loop_verify (EV_P) 2960ev_verify (EV_P) EV_THROW
1845{ 2961{
1846#if EV_VERIFY 2962#if EV_VERIFY
1847 int i; 2963 int i;
1848 WL w; 2964 WL w, w2;
1849 2965
1850 assert (activecnt >= -1); 2966 assert (activecnt >= -1);
1851 2967
1852 assert (fdchangemax >= fdchangecnt); 2968 assert (fdchangemax >= fdchangecnt);
1853 for (i = 0; i < fdchangecnt; ++i) 2969 for (i = 0; i < fdchangecnt; ++i)
1854 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2970 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1855 2971
1856 assert (anfdmax >= 0); 2972 assert (anfdmax >= 0);
1857 for (i = 0; i < anfdmax; ++i) 2973 for (i = 0; i < anfdmax; ++i)
2974 {
2975 int j = 0;
2976
1858 for (w = anfds [i].head; w; w = w->next) 2977 for (w = w2 = anfds [i].head; w; w = w->next)
1859 { 2978 {
1860 verify_watcher (EV_A_ (W)w); 2979 verify_watcher (EV_A_ (W)w);
2980
2981 if (j++ & 1)
2982 {
2983 assert (("libev: io watcher list contains a loop", w != w2));
2984 w2 = w2->next;
2985 }
2986
1861 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2987 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1862 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2988 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1863 } 2989 }
2990 }
1864 2991
1865 assert (timermax >= timercnt); 2992 assert (timermax >= timercnt);
1866 verify_heap (EV_A_ timers, timercnt); 2993 verify_heap (EV_A_ timers, timercnt);
1867 2994
1868#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
… …
1883#if EV_FORK_ENABLE 3010#if EV_FORK_ENABLE
1884 assert (forkmax >= forkcnt); 3011 assert (forkmax >= forkcnt);
1885 array_verify (EV_A_ (W *)forks, forkcnt); 3012 array_verify (EV_A_ (W *)forks, forkcnt);
1886#endif 3013#endif
1887 3014
3015#if EV_CLEANUP_ENABLE
3016 assert (cleanupmax >= cleanupcnt);
3017 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3018#endif
3019
1888#if EV_ASYNC_ENABLE 3020#if EV_ASYNC_ENABLE
1889 assert (asyncmax >= asynccnt); 3021 assert (asyncmax >= asynccnt);
1890 array_verify (EV_A_ (W *)asyncs, asynccnt); 3022 array_verify (EV_A_ (W *)asyncs, asynccnt);
1891#endif 3023#endif
1892 3024
3025#if EV_PREPARE_ENABLE
1893 assert (preparemax >= preparecnt); 3026 assert (preparemax >= preparecnt);
1894 array_verify (EV_A_ (W *)prepares, preparecnt); 3027 array_verify (EV_A_ (W *)prepares, preparecnt);
3028#endif
1895 3029
3030#if EV_CHECK_ENABLE
1896 assert (checkmax >= checkcnt); 3031 assert (checkmax >= checkcnt);
1897 array_verify (EV_A_ (W *)checks, checkcnt); 3032 array_verify (EV_A_ (W *)checks, checkcnt);
3033#endif
1898 3034
1899# if 0 3035# if 0
3036#if EV_CHILD_ENABLE
1900 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3037 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1901 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3038 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3039#endif
1902# endif 3040# endif
1903#endif 3041#endif
1904} 3042}
1905#endif 3043#endif
1906 3044
1907#if EV_MULTIPLICITY 3045#if EV_MULTIPLICITY
1908struct ev_loop * 3046struct ev_loop * ecb_cold
1909ev_default_loop_init (unsigned int flags)
1910#else 3047#else
1911int 3048int
3049#endif
1912ev_default_loop (unsigned int flags) 3050ev_default_loop (unsigned int flags) EV_THROW
1913#endif
1914{ 3051{
1915 if (!ev_default_loop_ptr) 3052 if (!ev_default_loop_ptr)
1916 { 3053 {
1917#if EV_MULTIPLICITY 3054#if EV_MULTIPLICITY
1918 EV_P = ev_default_loop_ptr = &default_loop_struct; 3055 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1922 3059
1923 loop_init (EV_A_ flags); 3060 loop_init (EV_A_ flags);
1924 3061
1925 if (ev_backend (EV_A)) 3062 if (ev_backend (EV_A))
1926 { 3063 {
1927#ifndef _WIN32 3064#if EV_CHILD_ENABLE
1928 ev_signal_init (&childev, childcb, SIGCHLD); 3065 ev_signal_init (&childev, childcb, SIGCHLD);
1929 ev_set_priority (&childev, EV_MAXPRI); 3066 ev_set_priority (&childev, EV_MAXPRI);
1930 ev_signal_start (EV_A_ &childev); 3067 ev_signal_start (EV_A_ &childev);
1931 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3068 ev_unref (EV_A); /* child watcher should not keep loop alive */
1932#endif 3069#endif
… …
1937 3074
1938 return ev_default_loop_ptr; 3075 return ev_default_loop_ptr;
1939} 3076}
1940 3077
1941void 3078void
1942ev_default_destroy (void) 3079ev_loop_fork (EV_P) EV_THROW
1943{ 3080{
1944#if EV_MULTIPLICITY 3081 postfork = 1;
1945 EV_P = ev_default_loop_ptr;
1946#endif
1947
1948 ev_default_loop_ptr = 0;
1949
1950#ifndef _WIN32
1951 ev_ref (EV_A); /* child watcher */
1952 ev_signal_stop (EV_A_ &childev);
1953#endif
1954
1955 loop_destroy (EV_A);
1956}
1957
1958void
1959ev_default_fork (void)
1960{
1961#if EV_MULTIPLICITY
1962 EV_P = ev_default_loop_ptr;
1963#endif
1964
1965 postfork = 1; /* must be in line with ev_loop_fork */
1966} 3082}
1967 3083
1968/*****************************************************************************/ 3084/*****************************************************************************/
1969 3085
1970void 3086void
… …
1972{ 3088{
1973 EV_CB_INVOKE ((W)w, revents); 3089 EV_CB_INVOKE ((W)w, revents);
1974} 3090}
1975 3091
1976unsigned int 3092unsigned int
1977ev_pending_count (EV_P) 3093ev_pending_count (EV_P) EV_THROW
1978{ 3094{
1979 int pri; 3095 int pri;
1980 unsigned int count = 0; 3096 unsigned int count = 0;
1981 3097
1982 for (pri = NUMPRI; pri--; ) 3098 for (pri = NUMPRI; pri--; )
… …
1986} 3102}
1987 3103
1988void noinline 3104void noinline
1989ev_invoke_pending (EV_P) 3105ev_invoke_pending (EV_P)
1990{ 3106{
1991 int pri; 3107 pendingpri = NUMPRI;
1992 3108
1993 for (pri = NUMPRI; pri--; ) 3109 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3110 {
3111 --pendingpri;
3112
1994 while (pendingcnt [pri]) 3113 while (pendingcnt [pendingpri])
1995 { 3114 {
1996 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3115 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1997 3116
1998 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1999 /* ^ this is no longer true, as pending_w could be here */
2000
2001 p->w->pending = 0; 3117 p->w->pending = 0;
2002 EV_CB_INVOKE (p->w, p->events); 3118 EV_CB_INVOKE (p->w, p->events);
2003 EV_FREQUENT_CHECK; 3119 EV_FREQUENT_CHECK;
2004 } 3120 }
3121 }
2005} 3122}
2006 3123
2007#if EV_IDLE_ENABLE 3124#if EV_IDLE_ENABLE
2008/* make idle watchers pending. this handles the "call-idle */ 3125/* make idle watchers pending. this handles the "call-idle */
2009/* only when higher priorities are idle" logic */ 3126/* only when higher priorities are idle" logic */
… …
2061 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2062 feed_reverse (EV_A_ (W)w); 3179 feed_reverse (EV_A_ (W)w);
2063 } 3180 }
2064 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3181 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2065 3182
2066 feed_reverse_done (EV_A_ EV_TIMEOUT); 3183 feed_reverse_done (EV_A_ EV_TIMER);
2067 } 3184 }
2068} 3185}
2069 3186
2070#if EV_PERIODIC_ENABLE 3187#if EV_PERIODIC_ENABLE
3188
3189static void noinline
3190periodic_recalc (EV_P_ ev_periodic *w)
3191{
3192 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3193 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3194
3195 /* the above almost always errs on the low side */
3196 while (at <= ev_rt_now)
3197 {
3198 ev_tstamp nat = at + w->interval;
3199
3200 /* when resolution fails us, we use ev_rt_now */
3201 if (expect_false (nat == at))
3202 {
3203 at = ev_rt_now;
3204 break;
3205 }
3206
3207 at = nat;
3208 }
3209
3210 ev_at (w) = at;
3211}
3212
2071/* make periodics pending */ 3213/* make periodics pending */
2072inline_size void 3214inline_size void
2073periodics_reify (EV_P) 3215periodics_reify (EV_P)
2074{ 3216{
2075 EV_FREQUENT_CHECK; 3217 EV_FREQUENT_CHECK;
2076 3218
2077 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3219 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2078 { 3220 {
2079 int feed_count = 0;
2080
2081 do 3221 do
2082 { 3222 {
2083 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3223 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2084 3224
2085 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3225 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2094 ANHE_at_cache (periodics [HEAP0]); 3234 ANHE_at_cache (periodics [HEAP0]);
2095 downheap (periodics, periodiccnt, HEAP0); 3235 downheap (periodics, periodiccnt, HEAP0);
2096 } 3236 }
2097 else if (w->interval) 3237 else if (w->interval)
2098 { 3238 {
2099 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3239 periodic_recalc (EV_A_ w);
2100 /* if next trigger time is not sufficiently in the future, put it there */
2101 /* this might happen because of floating point inexactness */
2102 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2103 {
2104 ev_at (w) += w->interval;
2105
2106 /* if interval is unreasonably low we might still have a time in the past */
2107 /* so correct this. this will make the periodic very inexact, but the user */
2108 /* has effectively asked to get triggered more often than possible */
2109 if (ev_at (w) < ev_rt_now)
2110 ev_at (w) = ev_rt_now;
2111 }
2112
2113 ANHE_at_cache (periodics [HEAP0]); 3240 ANHE_at_cache (periodics [HEAP0]);
2114 downheap (periodics, periodiccnt, HEAP0); 3241 downheap (periodics, periodiccnt, HEAP0);
2115 } 3242 }
2116 else 3243 else
2117 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3244 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2124 feed_reverse_done (EV_A_ EV_PERIODIC); 3251 feed_reverse_done (EV_A_ EV_PERIODIC);
2125 } 3252 }
2126} 3253}
2127 3254
2128/* simply recalculate all periodics */ 3255/* simply recalculate all periodics */
2129/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3256/* TODO: maybe ensure that at least one event happens when jumping forward? */
2130static void noinline 3257static void noinline ecb_cold
2131periodics_reschedule (EV_P) 3258periodics_reschedule (EV_P)
2132{ 3259{
2133 int i; 3260 int i;
2134 3261
2135 /* adjust periodics after time jump */ 3262 /* adjust periodics after time jump */
… …
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3265 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2139 3266
2140 if (w->reschedule_cb) 3267 if (w->reschedule_cb)
2141 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3268 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2142 else if (w->interval) 3269 else if (w->interval)
2143 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3270 periodic_recalc (EV_A_ w);
2144 3271
2145 ANHE_at_cache (periodics [i]); 3272 ANHE_at_cache (periodics [i]);
2146 } 3273 }
2147 3274
2148 reheap (periodics, periodiccnt); 3275 reheap (periodics, periodiccnt);
2149} 3276}
2150#endif 3277#endif
2151 3278
2152/* adjust all timers by a given offset */ 3279/* adjust all timers by a given offset */
2153static void noinline 3280static void noinline ecb_cold
2154timers_reschedule (EV_P_ ev_tstamp adjust) 3281timers_reschedule (EV_P_ ev_tstamp adjust)
2155{ 3282{
2156 int i; 3283 int i;
2157 3284
2158 for (i = 0; i < timercnt; ++i) 3285 for (i = 0; i < timercnt; ++i)
… …
2162 ANHE_at_cache (*he); 3289 ANHE_at_cache (*he);
2163 } 3290 }
2164} 3291}
2165 3292
2166/* fetch new monotonic and realtime times from the kernel */ 3293/* fetch new monotonic and realtime times from the kernel */
2167/* also detetc if there was a timejump, and act accordingly */ 3294/* also detect if there was a timejump, and act accordingly */
2168inline_speed void 3295inline_speed void
2169time_update (EV_P_ ev_tstamp max_block) 3296time_update (EV_P_ ev_tstamp max_block)
2170{ 3297{
2171#if EV_USE_MONOTONIC 3298#if EV_USE_MONOTONIC
2172 if (expect_true (have_monotonic)) 3299 if (expect_true (have_monotonic))
… …
2195 * doesn't hurt either as we only do this on time-jumps or 3322 * doesn't hurt either as we only do this on time-jumps or
2196 * in the unlikely event of having been preempted here. 3323 * in the unlikely event of having been preempted here.
2197 */ 3324 */
2198 for (i = 4; --i; ) 3325 for (i = 4; --i; )
2199 { 3326 {
3327 ev_tstamp diff;
2200 rtmn_diff = ev_rt_now - mn_now; 3328 rtmn_diff = ev_rt_now - mn_now;
2201 3329
3330 diff = odiff - rtmn_diff;
3331
2202 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3332 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2203 return; /* all is well */ 3333 return; /* all is well */
2204 3334
2205 ev_rt_now = ev_time (); 3335 ev_rt_now = ev_time ();
2206 mn_now = get_clock (); 3336 mn_now = get_clock ();
2207 now_floor = mn_now; 3337 now_floor = mn_now;
… …
2229 3359
2230 mn_now = ev_rt_now; 3360 mn_now = ev_rt_now;
2231 } 3361 }
2232} 3362}
2233 3363
2234void 3364int
2235ev_loop (EV_P_ int flags) 3365ev_run (EV_P_ int flags)
2236{ 3366{
2237#if EV_MINIMAL < 2 3367#if EV_FEATURE_API
2238 ++loop_depth; 3368 ++loop_depth;
2239#endif 3369#endif
2240 3370
2241 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3371 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2242 3372
2243 loop_done = EVUNLOOP_CANCEL; 3373 loop_done = EVBREAK_CANCEL;
2244 3374
2245 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3375 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2246 3376
2247 do 3377 do
2248 { 3378 {
2249#if EV_VERIFY >= 2 3379#if EV_VERIFY >= 2
2250 ev_loop_verify (EV_A); 3380 ev_verify (EV_A);
2251#endif 3381#endif
2252 3382
2253#ifndef _WIN32 3383#ifndef _WIN32
2254 if (expect_false (curpid)) /* penalise the forking check even more */ 3384 if (expect_false (curpid)) /* penalise the forking check even more */
2255 if (expect_false (getpid () != curpid)) 3385 if (expect_false (getpid () != curpid))
… …
2267 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3397 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2268 EV_INVOKE_PENDING; 3398 EV_INVOKE_PENDING;
2269 } 3399 }
2270#endif 3400#endif
2271 3401
3402#if EV_PREPARE_ENABLE
2272 /* queue prepare watchers (and execute them) */ 3403 /* queue prepare watchers (and execute them) */
2273 if (expect_false (preparecnt)) 3404 if (expect_false (preparecnt))
2274 { 3405 {
2275 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3406 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2276 EV_INVOKE_PENDING; 3407 EV_INVOKE_PENDING;
2277 } 3408 }
3409#endif
2278 3410
2279 if (expect_false (loop_done)) 3411 if (expect_false (loop_done))
2280 break; 3412 break;
2281 3413
2282 /* we might have forked, so reify kernel state if necessary */ 3414 /* we might have forked, so reify kernel state if necessary */
… …
2289 /* calculate blocking time */ 3421 /* calculate blocking time */
2290 { 3422 {
2291 ev_tstamp waittime = 0.; 3423 ev_tstamp waittime = 0.;
2292 ev_tstamp sleeptime = 0.; 3424 ev_tstamp sleeptime = 0.;
2293 3425
3426 /* remember old timestamp for io_blocktime calculation */
3427 ev_tstamp prev_mn_now = mn_now;
3428
3429 /* update time to cancel out callback processing overhead */
3430 time_update (EV_A_ 1e100);
3431
3432 /* from now on, we want a pipe-wake-up */
3433 pipe_write_wanted = 1;
3434
3435 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3436
2294 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3437 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2295 { 3438 {
2296 /* remember old timestamp for io_blocktime calculation */
2297 ev_tstamp prev_mn_now = mn_now;
2298
2299 /* update time to cancel out callback processing overhead */
2300 time_update (EV_A_ 1e100);
2301
2302 waittime = MAX_BLOCKTIME; 3439 waittime = MAX_BLOCKTIME;
2303 3440
2304 if (timercnt) 3441 if (timercnt)
2305 { 3442 {
2306 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3443 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2307 if (waittime > to) waittime = to; 3444 if (waittime > to) waittime = to;
2308 } 3445 }
2309 3446
2310#if EV_PERIODIC_ENABLE 3447#if EV_PERIODIC_ENABLE
2311 if (periodiccnt) 3448 if (periodiccnt)
2312 { 3449 {
2313 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3450 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2314 if (waittime > to) waittime = to; 3451 if (waittime > to) waittime = to;
2315 } 3452 }
2316#endif 3453#endif
2317 3454
2318 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3455 /* don't let timeouts decrease the waittime below timeout_blocktime */
2319 if (expect_false (waittime < timeout_blocktime)) 3456 if (expect_false (waittime < timeout_blocktime))
2320 waittime = timeout_blocktime; 3457 waittime = timeout_blocktime;
3458
3459 /* at this point, we NEED to wait, so we have to ensure */
3460 /* to pass a minimum nonzero value to the backend */
3461 if (expect_false (waittime < backend_mintime))
3462 waittime = backend_mintime;
2321 3463
2322 /* extra check because io_blocktime is commonly 0 */ 3464 /* extra check because io_blocktime is commonly 0 */
2323 if (expect_false (io_blocktime)) 3465 if (expect_false (io_blocktime))
2324 { 3466 {
2325 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3467 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2326 3468
2327 if (sleeptime > waittime - backend_fudge) 3469 if (sleeptime > waittime - backend_mintime)
2328 sleeptime = waittime - backend_fudge; 3470 sleeptime = waittime - backend_mintime;
2329 3471
2330 if (expect_true (sleeptime > 0.)) 3472 if (expect_true (sleeptime > 0.))
2331 { 3473 {
2332 ev_sleep (sleeptime); 3474 ev_sleep (sleeptime);
2333 waittime -= sleeptime; 3475 waittime -= sleeptime;
2334 } 3476 }
2335 } 3477 }
2336 } 3478 }
2337 3479
2338#if EV_MINIMAL < 2 3480#if EV_FEATURE_API
2339 ++loop_count; 3481 ++loop_count;
2340#endif 3482#endif
2341 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3483 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2342 backend_poll (EV_A_ waittime); 3484 backend_poll (EV_A_ waittime);
2343 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3485 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3486
3487 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3488
3489 ECB_MEMORY_FENCE_ACQUIRE;
3490 if (pipe_write_skipped)
3491 {
3492 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3493 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3494 }
3495
2344 3496
2345 /* update ev_rt_now, do magic */ 3497 /* update ev_rt_now, do magic */
2346 time_update (EV_A_ waittime + sleeptime); 3498 time_update (EV_A_ waittime + sleeptime);
2347 } 3499 }
2348 3500
… …
2355#if EV_IDLE_ENABLE 3507#if EV_IDLE_ENABLE
2356 /* queue idle watchers unless other events are pending */ 3508 /* queue idle watchers unless other events are pending */
2357 idle_reify (EV_A); 3509 idle_reify (EV_A);
2358#endif 3510#endif
2359 3511
3512#if EV_CHECK_ENABLE
2360 /* queue check watchers, to be executed first */ 3513 /* queue check watchers, to be executed first */
2361 if (expect_false (checkcnt)) 3514 if (expect_false (checkcnt))
2362 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3515 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3516#endif
2363 3517
2364 EV_INVOKE_PENDING; 3518 EV_INVOKE_PENDING;
2365 } 3519 }
2366 while (expect_true ( 3520 while (expect_true (
2367 activecnt 3521 activecnt
2368 && !loop_done 3522 && !loop_done
2369 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3523 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2370 )); 3524 ));
2371 3525
2372 if (loop_done == EVUNLOOP_ONE) 3526 if (loop_done == EVBREAK_ONE)
2373 loop_done = EVUNLOOP_CANCEL; 3527 loop_done = EVBREAK_CANCEL;
2374 3528
2375#if EV_MINIMAL < 2 3529#if EV_FEATURE_API
2376 --loop_depth; 3530 --loop_depth;
2377#endif 3531#endif
3532
3533 return activecnt;
2378} 3534}
2379 3535
2380void 3536void
2381ev_unloop (EV_P_ int how) 3537ev_break (EV_P_ int how) EV_THROW
2382{ 3538{
2383 loop_done = how; 3539 loop_done = how;
2384} 3540}
2385 3541
2386void 3542void
2387ev_ref (EV_P) 3543ev_ref (EV_P) EV_THROW
2388{ 3544{
2389 ++activecnt; 3545 ++activecnt;
2390} 3546}
2391 3547
2392void 3548void
2393ev_unref (EV_P) 3549ev_unref (EV_P) EV_THROW
2394{ 3550{
2395 --activecnt; 3551 --activecnt;
2396} 3552}
2397 3553
2398void 3554void
2399ev_now_update (EV_P) 3555ev_now_update (EV_P) EV_THROW
2400{ 3556{
2401 time_update (EV_A_ 1e100); 3557 time_update (EV_A_ 1e100);
2402} 3558}
2403 3559
2404void 3560void
2405ev_suspend (EV_P) 3561ev_suspend (EV_P) EV_THROW
2406{ 3562{
2407 ev_now_update (EV_A); 3563 ev_now_update (EV_A);
2408} 3564}
2409 3565
2410void 3566void
2411ev_resume (EV_P) 3567ev_resume (EV_P) EV_THROW
2412{ 3568{
2413 ev_tstamp mn_prev = mn_now; 3569 ev_tstamp mn_prev = mn_now;
2414 3570
2415 ev_now_update (EV_A); 3571 ev_now_update (EV_A);
2416 timers_reschedule (EV_A_ mn_now - mn_prev); 3572 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2455 w->pending = 0; 3611 w->pending = 0;
2456 } 3612 }
2457} 3613}
2458 3614
2459int 3615int
2460ev_clear_pending (EV_P_ void *w) 3616ev_clear_pending (EV_P_ void *w) EV_THROW
2461{ 3617{
2462 W w_ = (W)w; 3618 W w_ = (W)w;
2463 int pending = w_->pending; 3619 int pending = w_->pending;
2464 3620
2465 if (expect_true (pending)) 3621 if (expect_true (pending))
… …
2498} 3654}
2499 3655
2500/*****************************************************************************/ 3656/*****************************************************************************/
2501 3657
2502void noinline 3658void noinline
2503ev_io_start (EV_P_ ev_io *w) 3659ev_io_start (EV_P_ ev_io *w) EV_THROW
2504{ 3660{
2505 int fd = w->fd; 3661 int fd = w->fd;
2506 3662
2507 if (expect_false (ev_is_active (w))) 3663 if (expect_false (ev_is_active (w)))
2508 return; 3664 return;
2509 3665
2510 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3666 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2511 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3667 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2512 3668
2513 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
2514 3670
2515 ev_start (EV_A_ (W)w, 1); 3671 ev_start (EV_A_ (W)w, 1);
2516 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3672 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2517 wlist_add (&anfds[fd].head, (WL)w); 3673 wlist_add (&anfds[fd].head, (WL)w);
2518 3674
3675 /* common bug, apparently */
3676 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3677
2519 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3678 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2520 w->events &= ~EV__IOFDSET; 3679 w->events &= ~EV__IOFDSET;
2521 3680
2522 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
2523} 3682}
2524 3683
2525void noinline 3684void noinline
2526ev_io_stop (EV_P_ ev_io *w) 3685ev_io_stop (EV_P_ ev_io *w) EV_THROW
2527{ 3686{
2528 clear_pending (EV_A_ (W)w); 3687 clear_pending (EV_A_ (W)w);
2529 if (expect_false (!ev_is_active (w))) 3688 if (expect_false (!ev_is_active (w)))
2530 return; 3689 return;
2531 3690
… …
2534 EV_FREQUENT_CHECK; 3693 EV_FREQUENT_CHECK;
2535 3694
2536 wlist_del (&anfds[w->fd].head, (WL)w); 3695 wlist_del (&anfds[w->fd].head, (WL)w);
2537 ev_stop (EV_A_ (W)w); 3696 ev_stop (EV_A_ (W)w);
2538 3697
2539 fd_change (EV_A_ w->fd, 1); 3698 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2540 3699
2541 EV_FREQUENT_CHECK; 3700 EV_FREQUENT_CHECK;
2542} 3701}
2543 3702
2544void noinline 3703void noinline
2545ev_timer_start (EV_P_ ev_timer *w) 3704ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2546{ 3705{
2547 if (expect_false (ev_is_active (w))) 3706 if (expect_false (ev_is_active (w)))
2548 return; 3707 return;
2549 3708
2550 ev_at (w) += mn_now; 3709 ev_at (w) += mn_now;
… …
2564 3723
2565 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3724 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2566} 3725}
2567 3726
2568void noinline 3727void noinline
2569ev_timer_stop (EV_P_ ev_timer *w) 3728ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2570{ 3729{
2571 clear_pending (EV_A_ (W)w); 3730 clear_pending (EV_A_ (W)w);
2572 if (expect_false (!ev_is_active (w))) 3731 if (expect_false (!ev_is_active (w)))
2573 return; 3732 return;
2574 3733
… …
2586 timers [active] = timers [timercnt + HEAP0]; 3745 timers [active] = timers [timercnt + HEAP0];
2587 adjustheap (timers, timercnt, active); 3746 adjustheap (timers, timercnt, active);
2588 } 3747 }
2589 } 3748 }
2590 3749
2591 EV_FREQUENT_CHECK;
2592
2593 ev_at (w) -= mn_now; 3750 ev_at (w) -= mn_now;
2594 3751
2595 ev_stop (EV_A_ (W)w); 3752 ev_stop (EV_A_ (W)w);
3753
3754 EV_FREQUENT_CHECK;
2596} 3755}
2597 3756
2598void noinline 3757void noinline
2599ev_timer_again (EV_P_ ev_timer *w) 3758ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2600{ 3759{
2601 EV_FREQUENT_CHECK; 3760 EV_FREQUENT_CHECK;
3761
3762 clear_pending (EV_A_ (W)w);
2602 3763
2603 if (ev_is_active (w)) 3764 if (ev_is_active (w))
2604 { 3765 {
2605 if (w->repeat) 3766 if (w->repeat)
2606 { 3767 {
… …
2619 3780
2620 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
2621} 3782}
2622 3783
2623ev_tstamp 3784ev_tstamp
2624ev_timer_remaining (EV_P_ ev_timer *w) 3785ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2625{ 3786{
2626 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3787 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2627} 3788}
2628 3789
2629#if EV_PERIODIC_ENABLE 3790#if EV_PERIODIC_ENABLE
2630void noinline 3791void noinline
2631ev_periodic_start (EV_P_ ev_periodic *w) 3792ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2632{ 3793{
2633 if (expect_false (ev_is_active (w))) 3794 if (expect_false (ev_is_active (w)))
2634 return; 3795 return;
2635 3796
2636 if (w->reschedule_cb) 3797 if (w->reschedule_cb)
2637 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3798 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2638 else if (w->interval) 3799 else if (w->interval)
2639 { 3800 {
2640 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3801 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2641 /* this formula differs from the one in periodic_reify because we do not always round up */ 3802 periodic_recalc (EV_A_ w);
2642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2643 } 3803 }
2644 else 3804 else
2645 ev_at (w) = w->offset; 3805 ev_at (w) = w->offset;
2646 3806
2647 EV_FREQUENT_CHECK; 3807 EV_FREQUENT_CHECK;
… …
2657 3817
2658 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3818 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2659} 3819}
2660 3820
2661void noinline 3821void noinline
2662ev_periodic_stop (EV_P_ ev_periodic *w) 3822ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2663{ 3823{
2664 clear_pending (EV_A_ (W)w); 3824 clear_pending (EV_A_ (W)w);
2665 if (expect_false (!ev_is_active (w))) 3825 if (expect_false (!ev_is_active (w)))
2666 return; 3826 return;
2667 3827
… …
2679 periodics [active] = periodics [periodiccnt + HEAP0]; 3839 periodics [active] = periodics [periodiccnt + HEAP0];
2680 adjustheap (periodics, periodiccnt, active); 3840 adjustheap (periodics, periodiccnt, active);
2681 } 3841 }
2682 } 3842 }
2683 3843
2684 EV_FREQUENT_CHECK;
2685
2686 ev_stop (EV_A_ (W)w); 3844 ev_stop (EV_A_ (W)w);
3845
3846 EV_FREQUENT_CHECK;
2687} 3847}
2688 3848
2689void noinline 3849void noinline
2690ev_periodic_again (EV_P_ ev_periodic *w) 3850ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2691{ 3851{
2692 /* TODO: use adjustheap and recalculation */ 3852 /* TODO: use adjustheap and recalculation */
2693 ev_periodic_stop (EV_A_ w); 3853 ev_periodic_stop (EV_A_ w);
2694 ev_periodic_start (EV_A_ w); 3854 ev_periodic_start (EV_A_ w);
2695} 3855}
… …
2697 3857
2698#ifndef SA_RESTART 3858#ifndef SA_RESTART
2699# define SA_RESTART 0 3859# define SA_RESTART 0
2700#endif 3860#endif
2701 3861
3862#if EV_SIGNAL_ENABLE
3863
2702void noinline 3864void noinline
2703ev_signal_start (EV_P_ ev_signal *w) 3865ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2704{ 3866{
2705 if (expect_false (ev_is_active (w))) 3867 if (expect_false (ev_is_active (w)))
2706 return; 3868 return;
2707 3869
2708 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3870 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2710#if EV_MULTIPLICITY 3872#if EV_MULTIPLICITY
2711 assert (("libev: a signal must not be attached to two different loops", 3873 assert (("libev: a signal must not be attached to two different loops",
2712 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3874 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2713 3875
2714 signals [w->signum - 1].loop = EV_A; 3876 signals [w->signum - 1].loop = EV_A;
3877 ECB_MEMORY_FENCE_RELEASE;
2715#endif 3878#endif
2716 3879
2717 EV_FREQUENT_CHECK; 3880 EV_FREQUENT_CHECK;
2718 3881
2719#if EV_USE_SIGNALFD 3882#if EV_USE_SIGNALFD
… …
2752 if (!((WL)w)->next) 3915 if (!((WL)w)->next)
2753# if EV_USE_SIGNALFD 3916# if EV_USE_SIGNALFD
2754 if (sigfd < 0) /*TODO*/ 3917 if (sigfd < 0) /*TODO*/
2755# endif 3918# endif
2756 { 3919 {
2757# if _WIN32 3920# ifdef _WIN32
3921 evpipe_init (EV_A);
3922
2758 signal (w->signum, ev_sighandler); 3923 signal (w->signum, ev_sighandler);
2759# else 3924# else
2760 struct sigaction sa; 3925 struct sigaction sa;
2761 3926
2762 evpipe_init (EV_A); 3927 evpipe_init (EV_A);
… …
2764 sa.sa_handler = ev_sighandler; 3929 sa.sa_handler = ev_sighandler;
2765 sigfillset (&sa.sa_mask); 3930 sigfillset (&sa.sa_mask);
2766 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3931 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2767 sigaction (w->signum, &sa, 0); 3932 sigaction (w->signum, &sa, 0);
2768 3933
3934 if (origflags & EVFLAG_NOSIGMASK)
3935 {
2769 sigemptyset (&sa.sa_mask); 3936 sigemptyset (&sa.sa_mask);
2770 sigaddset (&sa.sa_mask, w->signum); 3937 sigaddset (&sa.sa_mask, w->signum);
2771 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3938 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3939 }
2772#endif 3940#endif
2773 } 3941 }
2774 3942
2775 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2776} 3944}
2777 3945
2778void noinline 3946void noinline
2779ev_signal_stop (EV_P_ ev_signal *w) 3947ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2780{ 3948{
2781 clear_pending (EV_A_ (W)w); 3949 clear_pending (EV_A_ (W)w);
2782 if (expect_false (!ev_is_active (w))) 3950 if (expect_false (!ev_is_active (w)))
2783 return; 3951 return;
2784 3952
… …
2793 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3961 signals [w->signum - 1].loop = 0; /* unattach from signal */
2794#endif 3962#endif
2795#if EV_USE_SIGNALFD 3963#if EV_USE_SIGNALFD
2796 if (sigfd >= 0) 3964 if (sigfd >= 0)
2797 { 3965 {
2798 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3966 sigset_t ss;
3967
3968 sigemptyset (&ss);
3969 sigaddset (&ss, w->signum);
2799 sigdelset (&sigfd_set, w->signum); 3970 sigdelset (&sigfd_set, w->signum);
3971
2800 signalfd (sigfd, &sigfd_set, 0); 3972 signalfd (sigfd, &sigfd_set, 0);
2801 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3973 sigprocmask (SIG_UNBLOCK, &ss, 0);
2802 /*TODO: maybe unblock signal? */
2803 } 3974 }
2804 else 3975 else
2805#endif 3976#endif
2806 signal (w->signum, SIG_DFL); 3977 signal (w->signum, SIG_DFL);
2807 } 3978 }
2808 3979
2809 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2810} 3981}
2811 3982
3983#endif
3984
3985#if EV_CHILD_ENABLE
3986
2812void 3987void
2813ev_child_start (EV_P_ ev_child *w) 3988ev_child_start (EV_P_ ev_child *w) EV_THROW
2814{ 3989{
2815#if EV_MULTIPLICITY 3990#if EV_MULTIPLICITY
2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3991 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2817#endif 3992#endif
2818 if (expect_false (ev_is_active (w))) 3993 if (expect_false (ev_is_active (w)))
2819 return; 3994 return;
2820 3995
2821 EV_FREQUENT_CHECK; 3996 EV_FREQUENT_CHECK;
2822 3997
2823 ev_start (EV_A_ (W)w, 1); 3998 ev_start (EV_A_ (W)w, 1);
2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3999 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2825 4000
2826 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
2827} 4002}
2828 4003
2829void 4004void
2830ev_child_stop (EV_P_ ev_child *w) 4005ev_child_stop (EV_P_ ev_child *w) EV_THROW
2831{ 4006{
2832 clear_pending (EV_A_ (W)w); 4007 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 4008 if (expect_false (!ev_is_active (w)))
2834 return; 4009 return;
2835 4010
2836 EV_FREQUENT_CHECK; 4011 EV_FREQUENT_CHECK;
2837 4012
2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4013 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2839 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2840 4015
2841 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2842} 4017}
4018
4019#endif
2843 4020
2844#if EV_STAT_ENABLE 4021#if EV_STAT_ENABLE
2845 4022
2846# ifdef _WIN32 4023# ifdef _WIN32
2847# undef lstat 4024# undef lstat
… …
2853#define MIN_STAT_INTERVAL 0.1074891 4030#define MIN_STAT_INTERVAL 0.1074891
2854 4031
2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4032static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2856 4033
2857#if EV_USE_INOTIFY 4034#if EV_USE_INOTIFY
2858# define EV_INOTIFY_BUFSIZE 8192 4035
4036/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4037# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2859 4038
2860static void noinline 4039static void noinline
2861infy_add (EV_P_ ev_stat *w) 4040infy_add (EV_P_ ev_stat *w)
2862{ 4041{
2863 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); 4042 w->wd = inotify_add_watch (fs_fd, w->path,
4043 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4044 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4045 | IN_DONT_FOLLOW | IN_MASK_ADD);
2864 4046
2865 if (w->wd < 0) 4047 if (w->wd >= 0)
4048 {
4049 struct statfs sfs;
4050
4051 /* now local changes will be tracked by inotify, but remote changes won't */
4052 /* unless the filesystem is known to be local, we therefore still poll */
4053 /* also do poll on <2.6.25, but with normal frequency */
4054
4055 if (!fs_2625)
4056 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4057 else if (!statfs (w->path, &sfs)
4058 && (sfs.f_type == 0x1373 /* devfs */
4059 || sfs.f_type == 0x4006 /* fat */
4060 || sfs.f_type == 0x4d44 /* msdos */
4061 || sfs.f_type == 0xEF53 /* ext2/3 */
4062 || sfs.f_type == 0x72b6 /* jffs2 */
4063 || sfs.f_type == 0x858458f6 /* ramfs */
4064 || sfs.f_type == 0x5346544e /* ntfs */
4065 || sfs.f_type == 0x3153464a /* jfs */
4066 || sfs.f_type == 0x9123683e /* btrfs */
4067 || sfs.f_type == 0x52654973 /* reiser3 */
4068 || sfs.f_type == 0x01021994 /* tmpfs */
4069 || sfs.f_type == 0x58465342 /* xfs */))
4070 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4071 else
4072 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2866 { 4073 }
4074 else
4075 {
4076 /* can't use inotify, continue to stat */
2867 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4077 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2868 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2869 4078
2870 /* monitor some parent directory for speedup hints */ 4079 /* if path is not there, monitor some parent directory for speedup hints */
2871 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4080 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2872 /* but an efficiency issue only */ 4081 /* but an efficiency issue only */
2873 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4082 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2874 { 4083 {
2875 char path [4096]; 4084 char path [4096];
… …
2885 if (!pend || pend == path) 4094 if (!pend || pend == path)
2886 break; 4095 break;
2887 4096
2888 *pend = 0; 4097 *pend = 0;
2889 w->wd = inotify_add_watch (fs_fd, path, mask); 4098 w->wd = inotify_add_watch (fs_fd, path, mask);
2890 } 4099 }
2891 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4100 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2892 } 4101 }
2893 } 4102 }
2894 4103
2895 if (w->wd >= 0) 4104 if (w->wd >= 0)
2896 {
2897 struct statfs sfs;
2898
2899 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4105 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2900 4106
2901 /* now local changes will be tracked by inotify, but remote changes won't */ 4107 /* now re-arm timer, if required */
2902 /* unless the filesystem it known to be local, we therefore still poll */ 4108 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2903 /* also do poll on <2.6.25, but with normal frequency */
2904
2905 if (fs_2625 && !statfs (w->path, &sfs))
2906 if (sfs.f_type == 0x1373 /* devfs */
2907 || sfs.f_type == 0xEF53 /* ext2/3 */
2908 || sfs.f_type == 0x3153464a /* jfs */
2909 || sfs.f_type == 0x52654973 /* reiser3 */
2910 || sfs.f_type == 0x01021994 /* tempfs */
2911 || sfs.f_type == 0x58465342 /* xfs */)
2912 return;
2913
2914 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2915 ev_timer_again (EV_A_ &w->timer); 4109 ev_timer_again (EV_A_ &w->timer);
2916 } 4110 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2917} 4111}
2918 4112
2919static void noinline 4113static void noinline
2920infy_del (EV_P_ ev_stat *w) 4114infy_del (EV_P_ ev_stat *w)
2921{ 4115{
… …
2924 4118
2925 if (wd < 0) 4119 if (wd < 0)
2926 return; 4120 return;
2927 4121
2928 w->wd = -2; 4122 w->wd = -2;
2929 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4123 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2930 wlist_del (&fs_hash [slot].head, (WL)w); 4124 wlist_del (&fs_hash [slot].head, (WL)w);
2931 4125
2932 /* remove this watcher, if others are watching it, they will rearm */ 4126 /* remove this watcher, if others are watching it, they will rearm */
2933 inotify_rm_watch (fs_fd, wd); 4127 inotify_rm_watch (fs_fd, wd);
2934} 4128}
… …
2936static void noinline 4130static void noinline
2937infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4131infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2938{ 4132{
2939 if (slot < 0) 4133 if (slot < 0)
2940 /* overflow, need to check for all hash slots */ 4134 /* overflow, need to check for all hash slots */
2941 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4135 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2942 infy_wd (EV_A_ slot, wd, ev); 4136 infy_wd (EV_A_ slot, wd, ev);
2943 else 4137 else
2944 { 4138 {
2945 WL w_; 4139 WL w_;
2946 4140
2947 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4141 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2948 { 4142 {
2949 ev_stat *w = (ev_stat *)w_; 4143 ev_stat *w = (ev_stat *)w_;
2950 w_ = w_->next; /* lets us remove this watcher and all before it */ 4144 w_ = w_->next; /* lets us remove this watcher and all before it */
2951 4145
2952 if (w->wd == wd || wd == -1) 4146 if (w->wd == wd || wd == -1)
2953 { 4147 {
2954 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4148 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2955 { 4149 {
2956 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4150 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2957 w->wd = -1; 4151 w->wd = -1;
2958 infy_add (EV_A_ w); /* re-add, no matter what */ 4152 infy_add (EV_A_ w); /* re-add, no matter what */
2959 } 4153 }
2960 4154
2961 stat_timer_cb (EV_A_ &w->timer, 0); 4155 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2966 4160
2967static void 4161static void
2968infy_cb (EV_P_ ev_io *w, int revents) 4162infy_cb (EV_P_ ev_io *w, int revents)
2969{ 4163{
2970 char buf [EV_INOTIFY_BUFSIZE]; 4164 char buf [EV_INOTIFY_BUFSIZE];
2971 struct inotify_event *ev = (struct inotify_event *)buf;
2972 int ofs; 4165 int ofs;
2973 int len = read (fs_fd, buf, sizeof (buf)); 4166 int len = read (fs_fd, buf, sizeof (buf));
2974 4167
2975 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4168 for (ofs = 0; ofs < len; )
4169 {
4170 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2976 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4171 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4172 ofs += sizeof (struct inotify_event) + ev->len;
4173 }
2977} 4174}
2978 4175
2979inline_size void 4176inline_size void ecb_cold
2980check_2625 (EV_P) 4177ev_check_2625 (EV_P)
2981{ 4178{
2982 /* kernels < 2.6.25 are borked 4179 /* kernels < 2.6.25 are borked
2983 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4180 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2984 */ 4181 */
2985 struct utsname buf; 4182 if (ev_linux_version () < 0x020619)
2986 int major, minor, micro;
2987
2988 if (uname (&buf))
2989 return; 4183 return;
2990 4184
2991 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2992 return;
2993
2994 if (major < 2
2995 || (major == 2 && minor < 6)
2996 || (major == 2 && minor == 6 && micro < 25))
2997 return;
2998
2999 fs_2625 = 1; 4185 fs_2625 = 1;
4186}
4187
4188inline_size int
4189infy_newfd (void)
4190{
4191#if defined IN_CLOEXEC && defined IN_NONBLOCK
4192 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4193 if (fd >= 0)
4194 return fd;
4195#endif
4196 return inotify_init ();
3000} 4197}
3001 4198
3002inline_size void 4199inline_size void
3003infy_init (EV_P) 4200infy_init (EV_P)
3004{ 4201{
3005 if (fs_fd != -2) 4202 if (fs_fd != -2)
3006 return; 4203 return;
3007 4204
3008 fs_fd = -1; 4205 fs_fd = -1;
3009 4206
3010 check_2625 (EV_A); 4207 ev_check_2625 (EV_A);
3011 4208
3012 fs_fd = inotify_init (); 4209 fs_fd = infy_newfd ();
3013 4210
3014 if (fs_fd >= 0) 4211 if (fs_fd >= 0)
3015 { 4212 {
4213 fd_intern (fs_fd);
3016 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4214 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3017 ev_set_priority (&fs_w, EV_MAXPRI); 4215 ev_set_priority (&fs_w, EV_MAXPRI);
3018 ev_io_start (EV_A_ &fs_w); 4216 ev_io_start (EV_A_ &fs_w);
4217 ev_unref (EV_A);
3019 } 4218 }
3020} 4219}
3021 4220
3022inline_size void 4221inline_size void
3023infy_fork (EV_P) 4222infy_fork (EV_P)
… …
3025 int slot; 4224 int slot;
3026 4225
3027 if (fs_fd < 0) 4226 if (fs_fd < 0)
3028 return; 4227 return;
3029 4228
4229 ev_ref (EV_A);
4230 ev_io_stop (EV_A_ &fs_w);
3030 close (fs_fd); 4231 close (fs_fd);
3031 fs_fd = inotify_init (); 4232 fs_fd = infy_newfd ();
3032 4233
4234 if (fs_fd >= 0)
4235 {
4236 fd_intern (fs_fd);
4237 ev_io_set (&fs_w, fs_fd, EV_READ);
4238 ev_io_start (EV_A_ &fs_w);
4239 ev_unref (EV_A);
4240 }
4241
3033 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4242 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3034 { 4243 {
3035 WL w_ = fs_hash [slot].head; 4244 WL w_ = fs_hash [slot].head;
3036 fs_hash [slot].head = 0; 4245 fs_hash [slot].head = 0;
3037 4246
3038 while (w_) 4247 while (w_)
… …
3043 w->wd = -1; 4252 w->wd = -1;
3044 4253
3045 if (fs_fd >= 0) 4254 if (fs_fd >= 0)
3046 infy_add (EV_A_ w); /* re-add, no matter what */ 4255 infy_add (EV_A_ w); /* re-add, no matter what */
3047 else 4256 else
4257 {
4258 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4259 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3048 ev_timer_again (EV_A_ &w->timer); 4260 ev_timer_again (EV_A_ &w->timer);
4261 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4262 }
3049 } 4263 }
3050 } 4264 }
3051} 4265}
3052 4266
3053#endif 4267#endif
… …
3057#else 4271#else
3058# define EV_LSTAT(p,b) lstat (p, b) 4272# define EV_LSTAT(p,b) lstat (p, b)
3059#endif 4273#endif
3060 4274
3061void 4275void
3062ev_stat_stat (EV_P_ ev_stat *w) 4276ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3063{ 4277{
3064 if (lstat (w->path, &w->attr) < 0) 4278 if (lstat (w->path, &w->attr) < 0)
3065 w->attr.st_nlink = 0; 4279 w->attr.st_nlink = 0;
3066 else if (!w->attr.st_nlink) 4280 else if (!w->attr.st_nlink)
3067 w->attr.st_nlink = 1; 4281 w->attr.st_nlink = 1;
… …
3070static void noinline 4284static void noinline
3071stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4285stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3072{ 4286{
3073 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4287 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3074 4288
3075 /* we copy this here each the time so that */ 4289 ev_statdata prev = w->attr;
3076 /* prev has the old value when the callback gets invoked */
3077 w->prev = w->attr;
3078 ev_stat_stat (EV_A_ w); 4290 ev_stat_stat (EV_A_ w);
3079 4291
3080 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4292 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3081 if ( 4293 if (
3082 w->prev.st_dev != w->attr.st_dev 4294 prev.st_dev != w->attr.st_dev
3083 || w->prev.st_ino != w->attr.st_ino 4295 || prev.st_ino != w->attr.st_ino
3084 || w->prev.st_mode != w->attr.st_mode 4296 || prev.st_mode != w->attr.st_mode
3085 || w->prev.st_nlink != w->attr.st_nlink 4297 || prev.st_nlink != w->attr.st_nlink
3086 || w->prev.st_uid != w->attr.st_uid 4298 || prev.st_uid != w->attr.st_uid
3087 || w->prev.st_gid != w->attr.st_gid 4299 || prev.st_gid != w->attr.st_gid
3088 || w->prev.st_rdev != w->attr.st_rdev 4300 || prev.st_rdev != w->attr.st_rdev
3089 || w->prev.st_size != w->attr.st_size 4301 || prev.st_size != w->attr.st_size
3090 || w->prev.st_atime != w->attr.st_atime 4302 || prev.st_atime != w->attr.st_atime
3091 || w->prev.st_mtime != w->attr.st_mtime 4303 || prev.st_mtime != w->attr.st_mtime
3092 || w->prev.st_ctime != w->attr.st_ctime 4304 || prev.st_ctime != w->attr.st_ctime
3093 ) { 4305 ) {
4306 /* we only update w->prev on actual differences */
4307 /* in case we test more often than invoke the callback, */
4308 /* to ensure that prev is always different to attr */
4309 w->prev = prev;
4310
3094 #if EV_USE_INOTIFY 4311 #if EV_USE_INOTIFY
3095 if (fs_fd >= 0) 4312 if (fs_fd >= 0)
3096 { 4313 {
3097 infy_del (EV_A_ w); 4314 infy_del (EV_A_ w);
3098 infy_add (EV_A_ w); 4315 infy_add (EV_A_ w);
… …
3103 ev_feed_event (EV_A_ w, EV_STAT); 4320 ev_feed_event (EV_A_ w, EV_STAT);
3104 } 4321 }
3105} 4322}
3106 4323
3107void 4324void
3108ev_stat_start (EV_P_ ev_stat *w) 4325ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3109{ 4326{
3110 if (expect_false (ev_is_active (w))) 4327 if (expect_false (ev_is_active (w)))
3111 return; 4328 return;
3112 4329
3113 ev_stat_stat (EV_A_ w); 4330 ev_stat_stat (EV_A_ w);
… …
3123 4340
3124 if (fs_fd >= 0) 4341 if (fs_fd >= 0)
3125 infy_add (EV_A_ w); 4342 infy_add (EV_A_ w);
3126 else 4343 else
3127#endif 4344#endif
4345 {
3128 ev_timer_again (EV_A_ &w->timer); 4346 ev_timer_again (EV_A_ &w->timer);
4347 ev_unref (EV_A);
4348 }
3129 4349
3130 ev_start (EV_A_ (W)w, 1); 4350 ev_start (EV_A_ (W)w, 1);
3131 4351
3132 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
3133} 4353}
3134 4354
3135void 4355void
3136ev_stat_stop (EV_P_ ev_stat *w) 4356ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3137{ 4357{
3138 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
3139 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
3140 return; 4360 return;
3141 4361
3142 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
3143 4363
3144#if EV_USE_INOTIFY 4364#if EV_USE_INOTIFY
3145 infy_del (EV_A_ w); 4365 infy_del (EV_A_ w);
3146#endif 4366#endif
4367
4368 if (ev_is_active (&w->timer))
4369 {
4370 ev_ref (EV_A);
3147 ev_timer_stop (EV_A_ &w->timer); 4371 ev_timer_stop (EV_A_ &w->timer);
4372 }
3148 4373
3149 ev_stop (EV_A_ (W)w); 4374 ev_stop (EV_A_ (W)w);
3150 4375
3151 EV_FREQUENT_CHECK; 4376 EV_FREQUENT_CHECK;
3152} 4377}
3153#endif 4378#endif
3154 4379
3155#if EV_IDLE_ENABLE 4380#if EV_IDLE_ENABLE
3156void 4381void
3157ev_idle_start (EV_P_ ev_idle *w) 4382ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3158{ 4383{
3159 if (expect_false (ev_is_active (w))) 4384 if (expect_false (ev_is_active (w)))
3160 return; 4385 return;
3161 4386
3162 pri_adjust (EV_A_ (W)w); 4387 pri_adjust (EV_A_ (W)w);
… …
3175 4400
3176 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3177} 4402}
3178 4403
3179void 4404void
3180ev_idle_stop (EV_P_ ev_idle *w) 4405ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3181{ 4406{
3182 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3183 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3184 return; 4409 return;
3185 4410
… …
3197 4422
3198 EV_FREQUENT_CHECK; 4423 EV_FREQUENT_CHECK;
3199} 4424}
3200#endif 4425#endif
3201 4426
4427#if EV_PREPARE_ENABLE
3202void 4428void
3203ev_prepare_start (EV_P_ ev_prepare *w) 4429ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3204{ 4430{
3205 if (expect_false (ev_is_active (w))) 4431 if (expect_false (ev_is_active (w)))
3206 return; 4432 return;
3207 4433
3208 EV_FREQUENT_CHECK; 4434 EV_FREQUENT_CHECK;
… …
3213 4439
3214 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
3215} 4441}
3216 4442
3217void 4443void
3218ev_prepare_stop (EV_P_ ev_prepare *w) 4444ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3219{ 4445{
3220 clear_pending (EV_A_ (W)w); 4446 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4447 if (expect_false (!ev_is_active (w)))
3222 return; 4448 return;
3223 4449
… …
3232 4458
3233 ev_stop (EV_A_ (W)w); 4459 ev_stop (EV_A_ (W)w);
3234 4460
3235 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3236} 4462}
4463#endif
3237 4464
4465#if EV_CHECK_ENABLE
3238void 4466void
3239ev_check_start (EV_P_ ev_check *w) 4467ev_check_start (EV_P_ ev_check *w) EV_THROW
3240{ 4468{
3241 if (expect_false (ev_is_active (w))) 4469 if (expect_false (ev_is_active (w)))
3242 return; 4470 return;
3243 4471
3244 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
… …
3249 4477
3250 EV_FREQUENT_CHECK; 4478 EV_FREQUENT_CHECK;
3251} 4479}
3252 4480
3253void 4481void
3254ev_check_stop (EV_P_ ev_check *w) 4482ev_check_stop (EV_P_ ev_check *w) EV_THROW
3255{ 4483{
3256 clear_pending (EV_A_ (W)w); 4484 clear_pending (EV_A_ (W)w);
3257 if (expect_false (!ev_is_active (w))) 4485 if (expect_false (!ev_is_active (w)))
3258 return; 4486 return;
3259 4487
… …
3268 4496
3269 ev_stop (EV_A_ (W)w); 4497 ev_stop (EV_A_ (W)w);
3270 4498
3271 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3272} 4500}
4501#endif
3273 4502
3274#if EV_EMBED_ENABLE 4503#if EV_EMBED_ENABLE
3275void noinline 4504void noinline
3276ev_embed_sweep (EV_P_ ev_embed *w) 4505ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3277{ 4506{
3278 ev_loop (w->other, EVLOOP_NONBLOCK); 4507 ev_run (w->other, EVRUN_NOWAIT);
3279} 4508}
3280 4509
3281static void 4510static void
3282embed_io_cb (EV_P_ ev_io *io, int revents) 4511embed_io_cb (EV_P_ ev_io *io, int revents)
3283{ 4512{
3284 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4513 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3285 4514
3286 if (ev_cb (w)) 4515 if (ev_cb (w))
3287 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4516 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3288 else 4517 else
3289 ev_loop (w->other, EVLOOP_NONBLOCK); 4518 ev_run (w->other, EVRUN_NOWAIT);
3290} 4519}
3291 4520
3292static void 4521static void
3293embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4522embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3294{ 4523{
… …
3298 EV_P = w->other; 4527 EV_P = w->other;
3299 4528
3300 while (fdchangecnt) 4529 while (fdchangecnt)
3301 { 4530 {
3302 fd_reify (EV_A); 4531 fd_reify (EV_A);
3303 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4532 ev_run (EV_A_ EVRUN_NOWAIT);
3304 } 4533 }
3305 } 4534 }
3306} 4535}
3307 4536
3308static void 4537static void
… …
3314 4543
3315 { 4544 {
3316 EV_P = w->other; 4545 EV_P = w->other;
3317 4546
3318 ev_loop_fork (EV_A); 4547 ev_loop_fork (EV_A);
3319 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4548 ev_run (EV_A_ EVRUN_NOWAIT);
3320 } 4549 }
3321 4550
3322 ev_embed_start (EV_A_ w); 4551 ev_embed_start (EV_A_ w);
3323} 4552}
3324 4553
… …
3329 ev_idle_stop (EV_A_ idle); 4558 ev_idle_stop (EV_A_ idle);
3330} 4559}
3331#endif 4560#endif
3332 4561
3333void 4562void
3334ev_embed_start (EV_P_ ev_embed *w) 4563ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3335{ 4564{
3336 if (expect_false (ev_is_active (w))) 4565 if (expect_false (ev_is_active (w)))
3337 return; 4566 return;
3338 4567
3339 { 4568 {
… …
3360 4589
3361 EV_FREQUENT_CHECK; 4590 EV_FREQUENT_CHECK;
3362} 4591}
3363 4592
3364void 4593void
3365ev_embed_stop (EV_P_ ev_embed *w) 4594ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3366{ 4595{
3367 clear_pending (EV_A_ (W)w); 4596 clear_pending (EV_A_ (W)w);
3368 if (expect_false (!ev_is_active (w))) 4597 if (expect_false (!ev_is_active (w)))
3369 return; 4598 return;
3370 4599
… …
3372 4601
3373 ev_io_stop (EV_A_ &w->io); 4602 ev_io_stop (EV_A_ &w->io);
3374 ev_prepare_stop (EV_A_ &w->prepare); 4603 ev_prepare_stop (EV_A_ &w->prepare);
3375 ev_fork_stop (EV_A_ &w->fork); 4604 ev_fork_stop (EV_A_ &w->fork);
3376 4605
4606 ev_stop (EV_A_ (W)w);
4607
3377 EV_FREQUENT_CHECK; 4608 EV_FREQUENT_CHECK;
3378} 4609}
3379#endif 4610#endif
3380 4611
3381#if EV_FORK_ENABLE 4612#if EV_FORK_ENABLE
3382void 4613void
3383ev_fork_start (EV_P_ ev_fork *w) 4614ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3384{ 4615{
3385 if (expect_false (ev_is_active (w))) 4616 if (expect_false (ev_is_active (w)))
3386 return; 4617 return;
3387 4618
3388 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
… …
3393 4624
3394 EV_FREQUENT_CHECK; 4625 EV_FREQUENT_CHECK;
3395} 4626}
3396 4627
3397void 4628void
3398ev_fork_stop (EV_P_ ev_fork *w) 4629ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3399{ 4630{
3400 clear_pending (EV_A_ (W)w); 4631 clear_pending (EV_A_ (W)w);
3401 if (expect_false (!ev_is_active (w))) 4632 if (expect_false (!ev_is_active (w)))
3402 return; 4633 return;
3403 4634
… …
3414 4645
3415 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3416} 4647}
3417#endif 4648#endif
3418 4649
4650#if EV_CLEANUP_ENABLE
4651void
4652ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4653{
4654 if (expect_false (ev_is_active (w)))
4655 return;
4656
4657 EV_FREQUENT_CHECK;
4658
4659 ev_start (EV_A_ (W)w, ++cleanupcnt);
4660 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4661 cleanups [cleanupcnt - 1] = w;
4662
4663 /* cleanup watchers should never keep a refcount on the loop */
4664 ev_unref (EV_A);
4665 EV_FREQUENT_CHECK;
4666}
4667
4668void
4669ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4670{
4671 clear_pending (EV_A_ (W)w);
4672 if (expect_false (!ev_is_active (w)))
4673 return;
4674
4675 EV_FREQUENT_CHECK;
4676 ev_ref (EV_A);
4677
4678 {
4679 int active = ev_active (w);
4680
4681 cleanups [active - 1] = cleanups [--cleanupcnt];
4682 ev_active (cleanups [active - 1]) = active;
4683 }
4684
4685 ev_stop (EV_A_ (W)w);
4686
4687 EV_FREQUENT_CHECK;
4688}
4689#endif
4690
3419#if EV_ASYNC_ENABLE 4691#if EV_ASYNC_ENABLE
3420void 4692void
3421ev_async_start (EV_P_ ev_async *w) 4693ev_async_start (EV_P_ ev_async *w) EV_THROW
3422{ 4694{
3423 if (expect_false (ev_is_active (w))) 4695 if (expect_false (ev_is_active (w)))
3424 return; 4696 return;
4697
4698 w->sent = 0;
3425 4699
3426 evpipe_init (EV_A); 4700 evpipe_init (EV_A);
3427 4701
3428 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3429 4703
… …
3433 4707
3434 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3435} 4709}
3436 4710
3437void 4711void
3438ev_async_stop (EV_P_ ev_async *w) 4712ev_async_stop (EV_P_ ev_async *w) EV_THROW
3439{ 4713{
3440 clear_pending (EV_A_ (W)w); 4714 clear_pending (EV_A_ (W)w);
3441 if (expect_false (!ev_is_active (w))) 4715 if (expect_false (!ev_is_active (w)))
3442 return; 4716 return;
3443 4717
… …
3454 4728
3455 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3456} 4730}
3457 4731
3458void 4732void
3459ev_async_send (EV_P_ ev_async *w) 4733ev_async_send (EV_P_ ev_async *w) EV_THROW
3460{ 4734{
3461 w->sent = 1; 4735 w->sent = 1;
3462 evpipe_write (EV_A_ &async_pending); 4736 evpipe_write (EV_A_ &async_pending);
3463} 4737}
3464#endif 4738#endif
… …
3501 4775
3502 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4776 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3503} 4777}
3504 4778
3505void 4779void
3506ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4780ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3507{ 4781{
3508 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4782 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3509 4783
3510 if (expect_false (!once)) 4784 if (expect_false (!once))
3511 { 4785 {
3512 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4786 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3513 return; 4787 return;
3514 } 4788 }
3515 4789
3516 once->cb = cb; 4790 once->cb = cb;
3517 once->arg = arg; 4791 once->arg = arg;
… …
3532} 4806}
3533 4807
3534/*****************************************************************************/ 4808/*****************************************************************************/
3535 4809
3536#if EV_WALK_ENABLE 4810#if EV_WALK_ENABLE
3537void 4811void ecb_cold
3538ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4812ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3539{ 4813{
3540 int i, j; 4814 int i, j;
3541 ev_watcher_list *wl, *wn; 4815 ev_watcher_list *wl, *wn;
3542 4816
3543 if (types & (EV_IO | EV_EMBED)) 4817 if (types & (EV_IO | EV_EMBED))
… …
3586 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4860 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3587#endif 4861#endif
3588 4862
3589#if EV_IDLE_ENABLE 4863#if EV_IDLE_ENABLE
3590 if (types & EV_IDLE) 4864 if (types & EV_IDLE)
3591 for (j = NUMPRI; i--; ) 4865 for (j = NUMPRI; j--; )
3592 for (i = idlecnt [j]; i--; ) 4866 for (i = idlecnt [j]; i--; )
3593 cb (EV_A_ EV_IDLE, idles [j][i]); 4867 cb (EV_A_ EV_IDLE, idles [j][i]);
3594#endif 4868#endif
3595 4869
3596#if EV_FORK_ENABLE 4870#if EV_FORK_ENABLE
… …
3604 if (types & EV_ASYNC) 4878 if (types & EV_ASYNC)
3605 for (i = asynccnt; i--; ) 4879 for (i = asynccnt; i--; )
3606 cb (EV_A_ EV_ASYNC, asyncs [i]); 4880 cb (EV_A_ EV_ASYNC, asyncs [i]);
3607#endif 4881#endif
3608 4882
4883#if EV_PREPARE_ENABLE
3609 if (types & EV_PREPARE) 4884 if (types & EV_PREPARE)
3610 for (i = preparecnt; i--; ) 4885 for (i = preparecnt; i--; )
3611#if EV_EMBED_ENABLE 4886# if EV_EMBED_ENABLE
3612 if (ev_cb (prepares [i]) != embed_prepare_cb) 4887 if (ev_cb (prepares [i]) != embed_prepare_cb)
3613#endif 4888# endif
3614 cb (EV_A_ EV_PREPARE, prepares [i]); 4889 cb (EV_A_ EV_PREPARE, prepares [i]);
4890#endif
3615 4891
4892#if EV_CHECK_ENABLE
3616 if (types & EV_CHECK) 4893 if (types & EV_CHECK)
3617 for (i = checkcnt; i--; ) 4894 for (i = checkcnt; i--; )
3618 cb (EV_A_ EV_CHECK, checks [i]); 4895 cb (EV_A_ EV_CHECK, checks [i]);
4896#endif
3619 4897
4898#if EV_SIGNAL_ENABLE
3620 if (types & EV_SIGNAL) 4899 if (types & EV_SIGNAL)
3621 for (i = 0; i < EV_NSIG - 1; ++i) 4900 for (i = 0; i < EV_NSIG - 1; ++i)
3622 for (wl = signals [i].head; wl; ) 4901 for (wl = signals [i].head; wl; )
3623 { 4902 {
3624 wn = wl->next; 4903 wn = wl->next;
3625 cb (EV_A_ EV_SIGNAL, wl); 4904 cb (EV_A_ EV_SIGNAL, wl);
3626 wl = wn; 4905 wl = wn;
3627 } 4906 }
4907#endif
3628 4908
4909#if EV_CHILD_ENABLE
3629 if (types & EV_CHILD) 4910 if (types & EV_CHILD)
3630 for (i = EV_PID_HASHSIZE; i--; ) 4911 for (i = (EV_PID_HASHSIZE); i--; )
3631 for (wl = childs [i]; wl; ) 4912 for (wl = childs [i]; wl; )
3632 { 4913 {
3633 wn = wl->next; 4914 wn = wl->next;
3634 cb (EV_A_ EV_CHILD, wl); 4915 cb (EV_A_ EV_CHILD, wl);
3635 wl = wn; 4916 wl = wn;
3636 } 4917 }
4918#endif
3637/* EV_STAT 0x00001000 /* stat data changed */ 4919/* EV_STAT 0x00001000 /* stat data changed */
3638/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4920/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3639} 4921}
3640#endif 4922#endif
3641 4923
3642#if EV_MULTIPLICITY 4924#if EV_MULTIPLICITY
3643 #include "ev_wrap.h" 4925 #include "ev_wrap.h"
3644#endif 4926#endif
3645 4927
3646#ifdef __cplusplus
3647}
3648#endif
3649

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