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Comparing libev/ev.c (file contents):
Revision 1.319 by root, Wed Nov 18 10:25:22 2009 UTC vs.
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 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>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# 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
175#endif 197#endif
176 198
177#ifndef _WIN32 199#ifndef _WIN32
178# include <sys/time.h> 200# include <sys/time.h>
179# include <sys/wait.h> 201# include <sys/wait.h>
180# include <unistd.h> 202# include <unistd.h>
181#else 203#else
182# include <io.h> 204# include <io.h>
183# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
184# include <windows.h> 207# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
187# endif 210# endif
211# undef EV_AVOID_STDIO
188#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
189 221
190/* 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 */
191 223
192/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 247#endif
216# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
217#endif 251#endif
218 252
219#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 256# else
223# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
224# endif 258# endif
225#endif 259#endif
226 260
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
227#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 273# else
231# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
232# endif 275# endif
233#endif 276#endif
234 277
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 280#endif
238 281
239#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 285# else
243# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
244# endif 287# endif
245#endif 288#endif
246 289
247#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 292#endif
250 293
251#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
252# ifdef _WIN32 295# ifdef _WIN32
253# define EV_USE_POLL 0 296# define EV_USE_POLL 0
254# else 297# else
255# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 299# endif
257#endif 300#endif
258 301
259#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 305# else
263# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
264# endif 307# endif
265#endif 308#endif
266 309
… …
272# define EV_USE_PORT 0 315# define EV_USE_PORT 0
273#endif 316#endif
274 317
275#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 321# else
279# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
280# endif 323# endif
281#endif 324#endif
282 325
283#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 328#endif
290 329
291#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 332#endif
298 333
299#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 337# else
303# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
304# endif 339# endif
305#endif 340#endif
306 341
307#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 345# else
311# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
312# endif 347# endif
313#endif 348#endif
314 349
… …
317# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
319#endif 354#endif
320 355
321#ifndef EV_VERIFY 356#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 358#endif
324 359
325#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 362#endif
328 363
329#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
330# 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
331#endif 382#endif
332 383
333/* 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, */
334/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 387# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
341# else 392# else
… …
360# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
362#endif 413#endif
363 414
364#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 418# include <sys/select.h>
367# endif 419# endif
368#endif 420#endif
369 421
370#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 423# include <sys/statfs.h>
373# include <sys/inotify.h> 424# include <sys/inotify.h>
374/* 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 */
375# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
378# endif 429# endif
379#endif
380
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif 430#endif
384 431
385#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
386/* 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 */
387# include <stdint.h> 434# include <stdint.h>
… …
393# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
394# else 441# else
395# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
396# endif 443# endif
397# endif 444# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 446#endif
406 447
407#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
408/* 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 */
409# include <stdint.h> 450# include <stdint.h>
… …
415# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
416# else 457# else
417# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
418# endif 459# endif
419# endif 460# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
424 462
425struct signalfd_siginfo 463struct signalfd_siginfo
426{ 464{
427 uint32_t ssi_signo; 465 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
429}; 467};
430# ifdef __cplusplus
431}
432# endif 468#endif
433#endif
434
435 469
436/**/ 470/**/
437 471
438#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 474#else
441# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
442#endif 476#endif
443 477
444/* 478/*
445 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 481 */
452#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 */
453 484
454#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) */
455#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) */
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#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
466#endif 580 #endif
581#endif
467 582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
649 #if __i386 || __i386__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
653 #elif ECB_GCC_AMD64
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
673 #elif defined __mips__
674 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
675 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
677 #elif defined __alpha__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
679 #elif defined __hppa__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
681 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
682 #elif defined __ia64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
684 #elif defined __m68k__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #elif defined __m88k__
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
688 #elif defined __sh__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
690 #endif
691 #endif
692#endif
693
694#ifndef ECB_MEMORY_FENCE
695 #if ECB_GCC_VERSION(4,7)
696 /* see comment below (stdatomic.h) about the C11 memory model. */
697 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
698 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
699 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
700
701 #elif ECB_CLANG_EXTENSION(c_atomic)
702 /* see comment below (stdatomic.h) about the C11 memory model. */
703 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
704 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
705 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
706
707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
708 #define ECB_MEMORY_FENCE __sync_synchronize ()
709 #elif _MSC_VER >= 1500 /* VC++ 2008 */
710 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
711 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
712 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
713 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
714 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
715 #elif _MSC_VER >= 1400 /* VC++ 2005 */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
720 #elif defined _WIN32
721 #include <WinNT.h>
722 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
723 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #include <mbarrier.h>
725 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
726 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
727 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
728 #elif __xlC__
729 #define ECB_MEMORY_FENCE __sync ()
730 #endif
731#endif
732
733#ifndef ECB_MEMORY_FENCE
734 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
735 /* we assume that these memory fences work on all variables/all memory accesses, */
736 /* not just C11 atomics and atomic accesses */
737 #include <stdatomic.h>
738 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
739 /* any fence other than seq_cst, which isn't very efficient for us. */
740 /* Why that is, we don't know - either the C11 memory model is quite useless */
741 /* for most usages, or gcc and clang have a bug */
742 /* I *currently* lean towards the latter, and inefficiently implement */
743 /* all three of ecb's fences as a seq_cst fence */
744 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
745 /* for all __atomic_thread_fence's except seq_cst */
746 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if !ECB_AVOID_PTHREADS
752 /*
753 * if you get undefined symbol references to pthread_mutex_lock,
754 * or failure to find pthread.h, then you should implement
755 * the ECB_MEMORY_FENCE operations for your cpu/compiler
756 * OR provide pthread.h and link against the posix thread library
757 * of your system.
758 */
759 #include <pthread.h>
760 #define ECB_NEEDS_PTHREADS 1
761 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
762
763 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
764 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
765 #endif
766#endif
767
768#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
769 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
770#endif
771
772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
774#endif
775
776/*****************************************************************************/
777
778#if ECB_CPP
779 #define ecb_inline static inline
780#elif ECB_GCC_VERSION(2,5)
781 #define ecb_inline static __inline__
782#elif ECB_C99
783 #define ecb_inline static inline
784#else
785 #define ecb_inline static
786#endif
787
788#if ECB_GCC_VERSION(3,3)
789 #define ecb_restrict __restrict__
790#elif ECB_C99
791 #define ecb_restrict restrict
792#else
793 #define ecb_restrict
794#endif
795
796typedef int ecb_bool;
797
798#define ECB_CONCAT_(a, b) a ## b
799#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
800#define ECB_STRINGIFY_(a) # a
801#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
802#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
803
804#define ecb_function_ ecb_inline
805
806#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
807 #define ecb_attribute(attrlist) __attribute__ (attrlist)
808#else
809 #define ecb_attribute(attrlist)
810#endif
811
812#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
813 #define ecb_is_constant(expr) __builtin_constant_p (expr)
814#else
815 /* possible C11 impl for integral types
816 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
817 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
818
819 #define ecb_is_constant(expr) 0
820#endif
821
822#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
823 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
824#else
825 #define ecb_expect(expr,value) (expr)
826#endif
827
828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
829 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
830#else
831 #define ecb_prefetch(addr,rw,locality)
832#endif
833
834/* no emulation for ecb_decltype */
835#if ECB_CPP11
836 // older implementations might have problems with decltype(x)::type, work around it
837 template<class T> struct ecb_decltype_t { typedef T type; };
838 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
839#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
840 #define ecb_decltype(x) __typeof__ (x)
841#endif
842
843#if _MSC_VER >= 1300
844 #define ecb_deprecated __declspec (deprecated)
845#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif
848
849#if __MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else
854 #define ecb_deprecated_message(msg) ecb_deprecated
855#endif
856
857#if _MSC_VER >= 1400
858 #define ecb_noinline __declspec (noinline)
859#else
860 #define ecb_noinline ecb_attribute ((__noinline__))
861#endif
862
863#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__))
866
867#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
874 #define ecb_noreturn __declspec (noreturn)
875#else
876 #define ecb_noreturn ecb_attribute ((__noreturn__))
877#endif
878
879#if ECB_GCC_VERSION(4,3)
880 #define ecb_artificial ecb_attribute ((__artificial__))
881 #define ecb_hot ecb_attribute ((__hot__))
882 #define ecb_cold ecb_attribute ((__cold__))
883#else
884 #define ecb_artificial
885 #define ecb_hot
886 #define ecb_cold
887#endif
888
889/* put around conditional expressions if you are very sure that the */
890/* expression is mostly true or mostly false. note that these return */
891/* booleans, not the expression. */
468#define expect_false(expr) expect ((expr) != 0, 0) 892#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
469#define expect_true(expr) expect ((expr) != 0, 1) 893#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
894/* for compatibility to the rest of the world */
895#define ecb_likely(expr) ecb_expect_true (expr)
896#define ecb_unlikely(expr) ecb_expect_false (expr)
897
898/* count trailing zero bits and count # of one bits */
899#if ECB_GCC_VERSION(3,4) \
900 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
901 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
902 && ECB_CLANG_BUILTIN(__builtin_popcount))
903 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
904 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
905 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
906 #define ecb_ctz32(x) __builtin_ctz (x)
907 #define ecb_ctz64(x) __builtin_ctzll (x)
908 #define ecb_popcount32(x) __builtin_popcount (x)
909 /* no popcountll */
910#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x)
914 {
915 int r = 0;
916
917 x &= ~x + 1; /* this isolates the lowest bit */
918
919#if ECB_branchless_on_i386
920 r += !!(x & 0xaaaaaaaa) << 0;
921 r += !!(x & 0xcccccccc) << 1;
922 r += !!(x & 0xf0f0f0f0) << 2;
923 r += !!(x & 0xff00ff00) << 3;
924 r += !!(x & 0xffff0000) << 4;
925#else
926 if (x & 0xaaaaaaaa) r += 1;
927 if (x & 0xcccccccc) r += 2;
928 if (x & 0xf0f0f0f0) r += 4;
929 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16;
931#endif
932
933 return r;
934 }
935
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x)
939 {
940 int shift = x & 0xffffffffU ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift;
942 }
943
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x)
947 {
948 x -= (x >> 1) & 0x55555555;
949 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
950 x = ((x >> 4) + x) & 0x0f0f0f0f;
951 x *= 0x01010101;
952
953 return x >> 24;
954 }
955
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 {
959 int r = 0;
960
961 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; }
966
967 return r;
968 }
969
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 {
973 int r = 0;
974
975 if (x >> 32) { x >>= 32; r += 32; }
976
977 return r + ecb_ld32 (x);
978 }
979#endif
980
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
983ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
984ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
985
986ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
987ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
988{
989 return ( (x * 0x0802U & 0x22110U)
990 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
991}
992
993ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
994ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
995{
996 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
997 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
998 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
999 x = ( x >> 8 ) | ( x << 8);
1000
1001 return x;
1002}
1003
1004ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1005ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1006{
1007 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1008 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1009 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1010 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1011 x = ( x >> 16 ) | ( x << 16);
1012
1013 return x;
1014}
1015
1016/* popcount64 is only available on 64 bit cpus as gcc builtin */
1017/* so for this version we are lazy */
1018ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1019ecb_function_ ecb_const int
1020ecb_popcount64 (uint64_t x)
1021{
1022 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1023}
1024
1025ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1026ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1027ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1028ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1029ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1030ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1031ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1032ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1033
1034ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1035ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1036ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1037ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1038ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1045 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x)
1047#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x)
1051 {
1052 return ecb_rotl16 (x, 8);
1053 }
1054
1055 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1056 ecb_function_ ecb_const uint32_t
1057 ecb_bswap32 (uint32_t x)
1058 {
1059 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1060 }
1061
1062 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1063 ecb_function_ ecb_const uint64_t
1064 ecb_bswap64 (uint64_t x)
1065 {
1066 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1067 }
1068#endif
1069
1070#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1071 #define ecb_unreachable() __builtin_unreachable ()
1072#else
1073 /* this seems to work fine, but gcc always emits a warning for it :/ */
1074 ecb_inline ecb_noreturn void ecb_unreachable (void);
1075 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1076#endif
1077
1078/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char
1083ecb_byteorder_helper (void)
1084{
1085 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1094 return 0x44;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1096 return 0x11;
1097#else
1098 union
1099 {
1100 uint32_t i;
1101 uint8_t c;
1102 } u = { 0x11223344 };
1103 return u.c;
1104#endif
1105}
1106
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1111
1112#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1116#endif
1117
1118#if ECB_CPP
1119 template<typename T>
1120 static inline T ecb_div_rd (T val, T div)
1121 {
1122 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1123 }
1124 template<typename T>
1125 static inline T ecb_div_ru (T val, T div)
1126 {
1127 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1128 }
1129#else
1130 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1131 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1132#endif
1133
1134#if ecb_cplusplus_does_not_suck
1135 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1136 template<typename T, int N>
1137 static inline int ecb_array_length (const T (&arr)[N])
1138 {
1139 return N;
1140 }
1141#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif
1144
1145/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147
1148/* basically, everything uses "ieee pure-endian" floating point numbers */
1149/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1150#if 0 \
1151 || __i386 || __i386__ \
1152 || ECB_GCC_AMD64 \
1153 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1154 || defined __s390__ || defined __s390x__ \
1155 || defined __mips__ \
1156 || defined __alpha__ \
1157 || defined __hppa__ \
1158 || defined __ia64__ \
1159 || defined __m68k__ \
1160 || defined __m88k__ \
1161 || defined __sh__ \
1162 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1163 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1164 || defined __aarch64__
1165 #define ECB_STDFP 1
1166 #include <string.h> /* for memcpy */
1167#else
1168 #define ECB_STDFP 0
1169#endif
1170
1171#ifndef ECB_NO_LIBM
1172
1173 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1174
1175 /* only the oldest of old doesn't have this one. solaris. */
1176 #ifdef INFINITY
1177 #define ECB_INFINITY INFINITY
1178 #else
1179 #define ECB_INFINITY HUGE_VAL
1180 #endif
1181
1182 #ifdef NAN
1183 #define ECB_NAN NAN
1184 #else
1185 #define ECB_NAN ECB_INFINITY
1186 #endif
1187
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1190 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e))
1192 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210
1211 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x)
1215 {
1216 uint32_t r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 4);
1220 #else
1221 /* slow emulation, works for anything but -0 */
1222 uint32_t m;
1223 int e;
1224
1225 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU;
1229
1230 m = frexpf (x, &e) * 0x1000000U;
1231
1232 r = m & 0x80000000U;
1233
1234 if (r)
1235 m = -m;
1236
1237 if (e <= -126)
1238 {
1239 m &= 0xffffffU;
1240 m >>= (-125 - e);
1241 e = -126;
1242 }
1243
1244 r |= (e + 126) << 23;
1245 r |= m & 0x7fffffU;
1246 #endif
1247
1248 return r;
1249 }
1250
1251 /* converts an ieee single/binary32 to a float */
1252 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1253 ecb_function_ ecb_const float
1254 ecb_binary32_to_float (uint32_t x)
1255 {
1256 float r;
1257
1258 #if ECB_STDFP
1259 memcpy (&r, &x, 4);
1260 #else
1261 /* emulation, only works for normals and subnormals and +0 */
1262 int neg = x >> 31;
1263 int e = (x >> 23) & 0xffU;
1264
1265 x &= 0x7fffffU;
1266
1267 if (e)
1268 x |= 0x800000U;
1269 else
1270 e = 1;
1271
1272 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1273 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1274
1275 r = neg ? -r : r;
1276 #endif
1277
1278 return r;
1279 }
1280
1281 /* convert a double to ieee double/binary64 */
1282 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1283 ecb_function_ ecb_const uint64_t
1284 ecb_double_to_binary64 (double x)
1285 {
1286 uint64_t r;
1287
1288 #if ECB_STDFP
1289 memcpy (&r, &x, 8);
1290 #else
1291 /* slow emulation, works for anything but -0 */
1292 uint64_t m;
1293 int e;
1294
1295 if (x == 0e0 ) return 0x0000000000000000U;
1296 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1297 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1298 if (x != x ) return 0X7ff7ffffffffffffU;
1299
1300 m = frexp (x, &e) * 0x20000000000000U;
1301
1302 r = m & 0x8000000000000000;;
1303
1304 if (r)
1305 m = -m;
1306
1307 if (e <= -1022)
1308 {
1309 m &= 0x1fffffffffffffU;
1310 m >>= (-1021 - e);
1311 e = -1022;
1312 }
1313
1314 r |= ((uint64_t)(e + 1022)) << 52;
1315 r |= m & 0xfffffffffffffU;
1316 #endif
1317
1318 return r;
1319 }
1320
1321 /* converts an ieee double/binary64 to a double */
1322 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1323 ecb_function_ ecb_const double
1324 ecb_binary64_to_double (uint64_t x)
1325 {
1326 double r;
1327
1328 #if ECB_STDFP
1329 memcpy (&r, &x, 8);
1330 #else
1331 /* emulation, only works for normals and subnormals and +0 */
1332 int neg = x >> 63;
1333 int e = (x >> 52) & 0x7ffU;
1334
1335 x &= 0xfffffffffffffU;
1336
1337 if (e)
1338 x |= 0x10000000000000U;
1339 else
1340 e = 1;
1341
1342 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1343 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1344
1345 r = neg ? -r : r;
1346 #endif
1347
1348 return r;
1349 }
1350
1351#endif
1352
1353#endif
1354
1355/* ECB.H END */
1356
1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1358/* if your architecture doesn't need memory fences, e.g. because it is
1359 * single-cpu/core, or if you use libev in a project that doesn't use libev
1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1361 * libev, in which cases the memory fences become nops.
1362 * alternatively, you can remove this #error and link against libpthread,
1363 * which will then provide the memory fences.
1364 */
1365# error "memory fences not defined for your architecture, please report"
1366#endif
1367
1368#ifndef ECB_MEMORY_FENCE
1369# define ECB_MEMORY_FENCE do { } while (0)
1370# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1371# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1372#endif
1373
1374#define expect_false(cond) ecb_expect_false (cond)
1375#define expect_true(cond) ecb_expect_true (cond)
1376#define noinline ecb_noinline
1377
470#define inline_size static inline 1378#define inline_size ecb_inline
471 1379
472#if EV_MINIMAL 1380#if EV_FEATURE_CODE
1381# define inline_speed ecb_inline
1382#else
473# define inline_speed static noinline 1383# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 1384#endif
477 1385
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1387
480#if EV_MINPRI == EV_MAXPRI 1388#if EV_MINPRI == EV_MAXPRI
… …
493#define ev_active(w) ((W)(w))->active 1401#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1402#define ev_at(w) ((WT)(w))->at
495 1403
496#if EV_USE_REALTIME 1404#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1405/* 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 */ 1406/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1407static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1408#endif
501 1409
502#if EV_USE_MONOTONIC 1410#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1411static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
505 1413
506#ifndef EV_FD_TO_WIN32_HANDLE 1414#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1415# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 1416#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 1417#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1418# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 1419#endif
512#ifndef EV_WIN32_CLOSE_FD 1420#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 1421# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 1422#endif
515 1423
… …
517# include "ev_win32.c" 1425# include "ev_win32.c"
518#endif 1426#endif
519 1427
520/*****************************************************************************/ 1428/*****************************************************************************/
521 1429
1430/* define a suitable floor function (only used by periodics atm) */
1431
1432#if EV_USE_FLOOR
1433# include <math.h>
1434# define ev_floor(v) floor (v)
1435#else
1436
1437#include <float.h>
1438
1439/* a floor() replacement function, should be independent of ev_tstamp type */
1440static ev_tstamp noinline
1441ev_floor (ev_tstamp v)
1442{
1443 /* the choice of shift factor is not terribly important */
1444#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1445 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1446#else
1447 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1448#endif
1449
1450 /* argument too large for an unsigned long? */
1451 if (expect_false (v >= shift))
1452 {
1453 ev_tstamp f;
1454
1455 if (v == v - 1.)
1456 return v; /* very large number */
1457
1458 f = shift * ev_floor (v * (1. / shift));
1459 return f + ev_floor (v - f);
1460 }
1461
1462 /* special treatment for negative args? */
1463 if (expect_false (v < 0.))
1464 {
1465 ev_tstamp f = -ev_floor (-v);
1466
1467 return f - (f == v ? 0 : 1);
1468 }
1469
1470 /* fits into an unsigned long */
1471 return (unsigned long)v;
1472}
1473
1474#endif
1475
1476/*****************************************************************************/
1477
1478#ifdef __linux
1479# include <sys/utsname.h>
1480#endif
1481
1482static unsigned int noinline ecb_cold
1483ev_linux_version (void)
1484{
1485#ifdef __linux
1486 unsigned int v = 0;
1487 struct utsname buf;
1488 int i;
1489 char *p = buf.release;
1490
1491 if (uname (&buf))
1492 return 0;
1493
1494 for (i = 3+1; --i; )
1495 {
1496 unsigned int c = 0;
1497
1498 for (;;)
1499 {
1500 if (*p >= '0' && *p <= '9')
1501 c = c * 10 + *p++ - '0';
1502 else
1503 {
1504 p += *p == '.';
1505 break;
1506 }
1507 }
1508
1509 v = (v << 8) | c;
1510 }
1511
1512 return v;
1513#else
1514 return 0;
1515#endif
1516}
1517
1518/*****************************************************************************/
1519
1520#if EV_AVOID_STDIO
1521static void noinline ecb_cold
1522ev_printerr (const char *msg)
1523{
1524 write (STDERR_FILENO, msg, strlen (msg));
1525}
1526#endif
1527
522static void (*syserr_cb)(const char *msg); 1528static void (*syserr_cb)(const char *msg) EV_THROW;
523 1529
524void 1530void ecb_cold
525ev_set_syserr_cb (void (*cb)(const char *msg)) 1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
526{ 1532{
527 syserr_cb = cb; 1533 syserr_cb = cb;
528} 1534}
529 1535
530static void noinline 1536static void noinline ecb_cold
531ev_syserr (const char *msg) 1537ev_syserr (const char *msg)
532{ 1538{
533 if (!msg) 1539 if (!msg)
534 msg = "(libev) system error"; 1540 msg = "(libev) system error";
535 1541
536 if (syserr_cb) 1542 if (syserr_cb)
537 syserr_cb (msg); 1543 syserr_cb (msg);
538 else 1544 else
539 { 1545 {
1546#if EV_AVOID_STDIO
1547 ev_printerr (msg);
1548 ev_printerr (": ");
1549 ev_printerr (strerror (errno));
1550 ev_printerr ("\n");
1551#else
540 perror (msg); 1552 perror (msg);
1553#endif
541 abort (); 1554 abort ();
542 } 1555 }
543} 1556}
544 1557
545static void * 1558static void *
546ev_realloc_emul (void *ptr, long size) 1559ev_realloc_emul (void *ptr, long size) EV_THROW
547{ 1560{
548 /* some systems, notably openbsd and darwin, fail to properly 1561 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1562 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1563 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it,
1565 * despite documenting it otherwise.
551 */ 1566 */
552 1567
553 if (size) 1568 if (size)
554 return realloc (ptr, size); 1569 return realloc (ptr, size);
555 1570
556 free (ptr); 1571 free (ptr);
557 return 0; 1572 return 0;
558} 1573}
559 1574
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
561 1576
562void 1577void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
564{ 1579{
565 alloc = cb; 1580 alloc = cb;
566} 1581}
567 1582
568inline_speed void * 1583inline_speed void *
… …
570{ 1585{
571 ptr = alloc (ptr, size); 1586 ptr = alloc (ptr, size);
572 1587
573 if (!ptr && size) 1588 if (!ptr && size)
574 { 1589 {
1590#if EV_AVOID_STDIO
1591 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1592#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1593 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1594#endif
576 abort (); 1595 abort ();
577 } 1596 }
578 1597
579 return ptr; 1598 return ptr;
580} 1599}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1615 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 1616 unsigned char unused;
598#if EV_USE_EPOLL 1617#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1618 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1619#endif
601#if EV_SELECT_IS_WINSOCKET 1620#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1621 SOCKET handle;
1622#endif
1623#if EV_USE_IOCP
1624 OVERLAPPED or, ow;
603#endif 1625#endif
604} ANFD; 1626} ANFD;
605 1627
606/* stores the pending event set for a given watcher */ 1628/* stores the pending event set for a given watcher */
607typedef struct 1629typedef struct
… …
649 #undef VAR 1671 #undef VAR
650 }; 1672 };
651 #include "ev_wrap.h" 1673 #include "ev_wrap.h"
652 1674
653 static struct ev_loop default_loop_struct; 1675 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 1676 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 1677
656#else 1678#else
657 1679
658 ev_tstamp ev_rt_now; 1680 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; 1681 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 1682 #include "ev_vars.h"
661 #undef VAR 1683 #undef VAR
662 1684
663 static int ev_default_loop_ptr; 1685 static int ev_default_loop_ptr;
664 1686
665#endif 1687#endif
666 1688
667#if EV_MINIMAL < 2 1689#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1690# 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) 1691# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 1692# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 1693#else
672# define EV_RELEASE_CB (void)0 1694# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 1695# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1696# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 1697#endif
676 1698
677#define EVUNLOOP_RECURSE 0x80 1699#define EVBREAK_RECURSE 0x80
678 1700
679/*****************************************************************************/ 1701/*****************************************************************************/
680 1702
681#ifndef EV_HAVE_EV_TIME 1703#ifndef EV_HAVE_EV_TIME
682ev_tstamp 1704ev_tstamp
683ev_time (void) 1705ev_time (void) EV_THROW
684{ 1706{
685#if EV_USE_REALTIME 1707#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 1708 if (expect_true (have_realtime))
687 { 1709 {
688 struct timespec ts; 1710 struct timespec ts;
… …
712 return ev_time (); 1734 return ev_time ();
713} 1735}
714 1736
715#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
716ev_tstamp 1738ev_tstamp
717ev_now (EV_P) 1739ev_now (EV_P) EV_THROW
718{ 1740{
719 return ev_rt_now; 1741 return ev_rt_now;
720} 1742}
721#endif 1743#endif
722 1744
723void 1745void
724ev_sleep (ev_tstamp delay) 1746ev_sleep (ev_tstamp delay) EV_THROW
725{ 1747{
726 if (delay > 0.) 1748 if (delay > 0.)
727 { 1749 {
728#if EV_USE_NANOSLEEP 1750#if EV_USE_NANOSLEEP
729 struct timespec ts; 1751 struct timespec ts;
730 1752
731 ts.tv_sec = (time_t)delay; 1753 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 1754 nanosleep (&ts, 0);
735#elif defined(_WIN32) 1755#elif defined _WIN32
736 Sleep ((unsigned long)(delay * 1e3)); 1756 Sleep ((unsigned long)(delay * 1e3));
737#else 1757#else
738 struct timeval tv; 1758 struct timeval tv;
739 1759
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 */ 1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 1761 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 1762 /* by older ones */
1763 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 1764 select (0, 0, 0, 0, &tv);
747#endif 1765#endif
748 } 1766 }
749} 1767}
750 1768
751/*****************************************************************************/ 1769/*****************************************************************************/
752 1770
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1771#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 1772
755/* find a suitable new size for the given array, */ 1773/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 1774/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 1775inline_size int
758array_nextsize (int elem, int cur, int cnt) 1776array_nextsize (int elem, int cur, int cnt)
759{ 1777{
760 int ncur = cur + 1; 1778 int ncur = cur + 1;
761 1779
762 do 1780 do
763 ncur <<= 1; 1781 ncur <<= 1;
764 while (cnt > ncur); 1782 while (cnt > ncur);
765 1783
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1784 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1785 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 1786 {
769 ncur *= elem; 1787 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1788 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 1789 ncur = ncur - sizeof (void *) * 4;
… …
773 } 1791 }
774 1792
775 return ncur; 1793 return ncur;
776} 1794}
777 1795
778static noinline void * 1796static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 1797array_realloc (int elem, void *base, int *cur, int cnt)
780{ 1798{
781 *cur = array_nextsize (elem, *cur, cnt); 1799 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 1800 return ev_realloc (base, elem * *cur);
783} 1801}
… …
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1804 memset ((void *)(base), 0, sizeof (*(base)) * (count))
787 1805
788#define array_needsize(type,base,cur,cnt,init) \ 1806#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 1807 if (expect_false ((cnt) > (cur))) \
790 { \ 1808 { \
791 int ocur_ = (cur); \ 1809 int ecb_unused ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 1810 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 1811 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 1812 init ((base) + (ocur_), (cur) - ocur_); \
795 } 1813 }
796 1814
… …
814pendingcb (EV_P_ ev_prepare *w, int revents) 1832pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 1833{
816} 1834}
817 1835
818void noinline 1836void noinline
819ev_feed_event (EV_P_ void *w, int revents) 1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW
820{ 1838{
821 W w_ = (W)w; 1839 W w_ = (W)w;
822 int pri = ABSPRI (w_); 1840 int pri = ABSPRI (w_);
823 1841
824 if (expect_false (w_->pending)) 1842 if (expect_false (w_->pending))
… …
828 w_->pending = ++pendingcnt [pri]; 1846 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
830 pendings [pri][w_->pending - 1].w = w_; 1848 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 1849 pendings [pri][w_->pending - 1].events = revents;
832 } 1850 }
1851
1852 pendingpri = NUMPRI - 1;
833} 1853}
834 1854
835inline_speed void 1855inline_speed void
836feed_reverse (EV_P_ W w) 1856feed_reverse (EV_P_ W w)
837{ 1857{
… …
857} 1877}
858 1878
859/*****************************************************************************/ 1879/*****************************************************************************/
860 1880
861inline_speed void 1881inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1882fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1883{
864 ANFD *anfd = anfds + fd; 1884 ANFD *anfd = anfds + fd;
865 ev_io *w; 1885 ev_io *w;
866 1886
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1887 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1899fd_event (EV_P_ int fd, int revents)
880{ 1900{
881 ANFD *anfd = anfds + fd; 1901 ANFD *anfd = anfds + fd;
882 1902
883 if (expect_true (!anfd->reify)) 1903 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1904 fd_event_nocheck (EV_A_ fd, revents);
885} 1905}
886 1906
887void 1907void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
889{ 1909{
890 if (fd >= 0 && fd < anfdmax) 1910 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1911 fd_event_nocheck (EV_A_ fd, revents);
892} 1912}
893 1913
894/* make sure the external fd watch events are in-sync */ 1914/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1915/* with the kernel/libev internal state */
896inline_size void 1916inline_size void
897fd_reify (EV_P) 1917fd_reify (EV_P)
898{ 1918{
899 int i; 1919 int i;
900 1920
1921#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1922 for (i = 0; i < fdchangecnt; ++i)
1923 {
1924 int fd = fdchanges [i];
1925 ANFD *anfd = anfds + fd;
1926
1927 if (anfd->reify & EV__IOFDSET && anfd->head)
1928 {
1929 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1930
1931 if (handle != anfd->handle)
1932 {
1933 unsigned long arg;
1934
1935 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1936
1937 /* handle changed, but fd didn't - we need to do it in two steps */
1938 backend_modify (EV_A_ fd, anfd->events, 0);
1939 anfd->events = 0;
1940 anfd->handle = handle;
1941 }
1942 }
1943 }
1944#endif
1945
901 for (i = 0; i < fdchangecnt; ++i) 1946 for (i = 0; i < fdchangecnt; ++i)
902 { 1947 {
903 int fd = fdchanges [i]; 1948 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1949 ANFD *anfd = anfds + fd;
905 ev_io *w; 1950 ev_io *w;
906 1951
907 unsigned char events = 0; 1952 unsigned char o_events = anfd->events;
1953 unsigned char o_reify = anfd->reify;
908 1954
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1955 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1956
912#if EV_SELECT_IS_WINSOCKET 1957 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1958 {
915 unsigned long arg; 1959 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1960
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1961 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1962 anfd->events |= (unsigned char)w->events;
1963
1964 if (o_events != anfd->events)
1965 o_reify = EV__IOFDSET; /* actually |= */
918 } 1966 }
919#endif
920 1967
921 { 1968 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); 1969 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1970 }
932 1971
933 fdchangecnt = 0; 1972 fdchangecnt = 0;
934} 1973}
935 1974
… …
947 fdchanges [fdchangecnt - 1] = fd; 1986 fdchanges [fdchangecnt - 1] = fd;
948 } 1987 }
949} 1988}
950 1989
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1991inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1992fd_kill (EV_P_ int fd)
954{ 1993{
955 ev_io *w; 1994 ev_io *w;
956 1995
957 while ((w = (ev_io *)anfds [fd].head)) 1996 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1998 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 2000 }
962} 2001}
963 2002
964/* check whether the given fd is atcually valid, for error recovery */ 2003/* check whether the given fd is actually valid, for error recovery */
965inline_size int 2004inline_size int ecb_cold
966fd_valid (int fd) 2005fd_valid (int fd)
967{ 2006{
968#ifdef _WIN32 2007#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 2009#else
971 return fcntl (fd, F_GETFD) != -1; 2010 return fcntl (fd, F_GETFD) != -1;
972#endif 2011#endif
973} 2012}
974 2013
975/* called on EBADF to verify fds */ 2014/* called on EBADF to verify fds */
976static void noinline 2015static void noinline ecb_cold
977fd_ebadf (EV_P) 2016fd_ebadf (EV_P)
978{ 2017{
979 int fd; 2018 int fd;
980 2019
981 for (fd = 0; fd < anfdmax; ++fd) 2020 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 2022 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 2023 fd_kill (EV_A_ fd);
985} 2024}
986 2025
987/* called on ENOMEM in select/poll to kill some fds and retry */ 2026/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 2027static void noinline ecb_cold
989fd_enomem (EV_P) 2028fd_enomem (EV_P)
990{ 2029{
991 int fd; 2030 int fd;
992 2031
993 for (fd = anfdmax; fd--; ) 2032 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 2050 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2051 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 2052 }
1014} 2053}
1015 2054
2055/* used to prepare libev internal fd's */
2056/* this is not fork-safe */
2057inline_speed void
2058fd_intern (int fd)
2059{
2060#ifdef _WIN32
2061 unsigned long arg = 1;
2062 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2063#else
2064 fcntl (fd, F_SETFD, FD_CLOEXEC);
2065 fcntl (fd, F_SETFL, O_NONBLOCK);
2066#endif
2067}
2068
1016/*****************************************************************************/ 2069/*****************************************************************************/
1017 2070
1018/* 2071/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 2072 * 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 2073 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 2074 * the branching factor of the d-tree.
1022 */ 2075 */
1023 2076
1024/* 2077/*
… …
1172 2225
1173static ANSIG signals [EV_NSIG - 1]; 2226static ANSIG signals [EV_NSIG - 1];
1174 2227
1175/*****************************************************************************/ 2228/*****************************************************************************/
1176 2229
1177/* used to prepare libev internal fd's */ 2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */ 2231
2232static void noinline ecb_cold
2233evpipe_init (EV_P)
2234{
2235 if (!ev_is_active (&pipe_w))
2236 {
2237 int fds [2];
2238
2239# if EV_USE_EVENTFD
2240 fds [0] = -1;
2241 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2242 if (fds [1] < 0 && errno == EINVAL)
2243 fds [1] = eventfd (0, 0);
2244
2245 if (fds [1] < 0)
2246# endif
2247 {
2248 while (pipe (fds))
2249 ev_syserr ("(libev) error creating signal/async pipe");
2250
2251 fd_intern (fds [0]);
2252 }
2253
2254 evpipe [0] = fds [0];
2255
2256 if (evpipe [1] < 0)
2257 evpipe [1] = fds [1]; /* first call, set write fd */
2258 else
2259 {
2260 /* on subsequent calls, do not change evpipe [1] */
2261 /* so that evpipe_write can always rely on its value. */
2262 /* this branch does not do anything sensible on windows, */
2263 /* so must not be executed on windows */
2264
2265 dup2 (fds [1], evpipe [1]);
2266 close (fds [1]);
2267 }
2268
2269 fd_intern (evpipe [1]);
2270
2271 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2272 ev_io_start (EV_A_ &pipe_w);
2273 ev_unref (EV_A); /* watcher should not keep loop alive */
2274 }
2275}
2276
1179inline_speed void 2277inline_speed void
1180fd_intern (int fd) 2278evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1181{ 2279{
1182#ifdef _WIN32 2280 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 2281
1191static void noinline 2282 if (expect_true (*flag))
1192evpipe_init (EV_P) 2283 return;
1193{ 2284
1194 if (!ev_is_active (&pipe_w)) 2285 *flag = 1;
2286 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2287
2288 pipe_write_skipped = 1;
2289
2290 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2291
2292 if (pipe_write_wanted)
1195 { 2293 {
2294 int old_errno;
2295
2296 pipe_write_skipped = 0;
2297 ECB_MEMORY_FENCE_RELEASE;
2298
2299 old_errno = errno; /* save errno because write will clobber it */
2300
1196#if EV_USE_EVENTFD 2301#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2302 if (evpipe [0] < 0)
1198 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
1202 { 2303 {
1203 evpipe [0] = -1; 2304 uint64_t counter = 1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 2305 write (evpipe [1], &counter, sizeof (uint64_t));
1205 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 2306 }
1207 else 2307 else
1208#endif 2308#endif
1209 { 2309 {
1210 while (pipe (evpipe)) 2310#ifdef _WIN32
1211 ev_syserr ("(libev) error creating signal/async pipe"); 2311 WSABUF buf;
1212 2312 DWORD sent;
1213 fd_intern (evpipe [0]); 2313 buf.buf = &buf;
1214 fd_intern (evpipe [1]); 2314 buf.len = 1;
1215 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else
2317 write (evpipe [1], &(evpipe [1]), 1);
2318#endif
1216 } 2319 }
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 2320
1242 errno = old_errno; 2321 errno = old_errno;
1243 } 2322 }
1244} 2323}
1245 2324
… …
1248static void 2327static void
1249pipecb (EV_P_ ev_io *iow, int revents) 2328pipecb (EV_P_ ev_io *iow, int revents)
1250{ 2329{
1251 int i; 2330 int i;
1252 2331
2332 if (revents & EV_READ)
2333 {
1253#if EV_USE_EVENTFD 2334#if EV_USE_EVENTFD
1254 if (evfd >= 0) 2335 if (evpipe [0] < 0)
1255 { 2336 {
1256 uint64_t counter; 2337 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 2338 read (evpipe [1], &counter, sizeof (uint64_t));
1258 } 2339 }
1259 else 2340 else
1260#endif 2341#endif
1261 { 2342 {
1262 char dummy; 2343 char dummy[4];
2344#ifdef _WIN32
2345 WSABUF buf;
2346 DWORD recvd;
2347 DWORD flags = 0;
2348 buf.buf = dummy;
2349 buf.len = sizeof (dummy);
2350 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2351#else
1263 read (evpipe [0], &dummy, 1); 2352 read (evpipe [0], &dummy, sizeof (dummy));
2353#endif
2354 }
1264 } 2355 }
1265 2356
2357 pipe_write_skipped = 0;
2358
2359 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2360
2361#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 2362 if (sig_pending)
1267 { 2363 {
1268 sig_pending = 0; 2364 sig_pending = 0;
2365
2366 ECB_MEMORY_FENCE;
1269 2367
1270 for (i = EV_NSIG - 1; i--; ) 2368 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 2369 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 2370 ev_feed_signal_event (EV_A_ i + 1);
1273 } 2371 }
2372#endif
1274 2373
1275#if EV_ASYNC_ENABLE 2374#if EV_ASYNC_ENABLE
1276 if (async_pending) 2375 if (async_pending)
1277 { 2376 {
1278 async_pending = 0; 2377 async_pending = 0;
2378
2379 ECB_MEMORY_FENCE;
1279 2380
1280 for (i = asynccnt; i--; ) 2381 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2382 if (asyncs [i]->sent)
1282 { 2383 {
1283 asyncs [i]->sent = 0; 2384 asyncs [i]->sent = 0;
2385 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2386 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2387 }
1286 } 2388 }
1287#endif 2389#endif
1288} 2390}
1289 2391
1290/*****************************************************************************/ 2392/*****************************************************************************/
1291 2393
2394void
2395ev_feed_signal (int signum) EV_THROW
2396{
2397#if EV_MULTIPLICITY
2398 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE;
2400 EV_A = signals [signum - 1].loop;
2401
2402 if (!EV_A)
2403 return;
2404#endif
2405
2406 signals [signum - 1].pending = 1;
2407 evpipe_write (EV_A_ &sig_pending);
2408}
2409
1292static void 2410static void
1293ev_sighandler (int signum) 2411ev_sighandler (int signum)
1294{ 2412{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#if _WIN32 2413#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2414 signal (signum, ev_sighandler);
1301#endif 2415#endif
1302 2416
1303 signals [signum - 1].pending = 1; 2417 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2418}
1306 2419
1307void noinline 2420void noinline
1308ev_feed_signal_event (EV_P_ int signum) 2421ev_feed_signal_event (EV_P_ int signum) EV_THROW
1309{ 2422{
1310 WL w; 2423 WL w;
1311 2424
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2425 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1313 return; 2426 return;
1314 2427
1315 --signum; 2428 --signum;
1316 2429
1317#if EV_MULTIPLICITY 2430#if EV_MULTIPLICITY
… …
1321 if (expect_false (signals [signum].loop != EV_A)) 2434 if (expect_false (signals [signum].loop != EV_A))
1322 return; 2435 return;
1323#endif 2436#endif
1324 2437
1325 signals [signum].pending = 0; 2438 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE;
1326 2440
1327 for (w = signals [signum].head; w; w = w->next) 2441 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2442 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2443}
1330 2444
… …
1346 break; 2460 break;
1347 } 2461 }
1348} 2462}
1349#endif 2463#endif
1350 2464
2465#endif
2466
1351/*****************************************************************************/ 2467/*****************************************************************************/
1352 2468
2469#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2470static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2471
1357static ev_signal childev; 2472static ev_signal childev;
1358 2473
1359#ifndef WIFCONTINUED 2474#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2475# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2480child_reap (EV_P_ int chain, int pid, int status)
1366{ 2481{
1367 ev_child *w; 2482 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2483 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2484
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2485 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2486 {
1372 if ((w->pid == pid || !w->pid) 2487 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2488 && (!traced || (w->flags & 1)))
1374 { 2489 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2490 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 */ 2515 /* 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 */ 2516 /* 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); 2517 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2518
1404 child_reap (EV_A_ pid, pid, status); 2519 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2520 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2521 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2522}
1408 2523
1409#endif 2524#endif
1410 2525
1411/*****************************************************************************/ 2526/*****************************************************************************/
1412 2527
2528#if EV_USE_IOCP
2529# include "ev_iocp.c"
2530#endif
1413#if EV_USE_PORT 2531#if EV_USE_PORT
1414# include "ev_port.c" 2532# include "ev_port.c"
1415#endif 2533#endif
1416#if EV_USE_KQUEUE 2534#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2535# include "ev_kqueue.c"
… …
1424#endif 2542#endif
1425#if EV_USE_SELECT 2543#if EV_USE_SELECT
1426# include "ev_select.c" 2544# include "ev_select.c"
1427#endif 2545#endif
1428 2546
1429int 2547int ecb_cold
1430ev_version_major (void) 2548ev_version_major (void) EV_THROW
1431{ 2549{
1432 return EV_VERSION_MAJOR; 2550 return EV_VERSION_MAJOR;
1433} 2551}
1434 2552
1435int 2553int ecb_cold
1436ev_version_minor (void) 2554ev_version_minor (void) EV_THROW
1437{ 2555{
1438 return EV_VERSION_MINOR; 2556 return EV_VERSION_MINOR;
1439} 2557}
1440 2558
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2559/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2560int inline_size ecb_cold
1443enable_secure (void) 2561enable_secure (void)
1444{ 2562{
1445#ifdef _WIN32 2563#ifdef _WIN32
1446 return 0; 2564 return 0;
1447#else 2565#else
1448 return getuid () != geteuid () 2566 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2567 || getgid () != getegid ();
1450#endif 2568#endif
1451} 2569}
1452 2570
1453unsigned int 2571unsigned int ecb_cold
1454ev_supported_backends (void) 2572ev_supported_backends (void) EV_THROW
1455{ 2573{
1456 unsigned int flags = 0; 2574 unsigned int flags = 0;
1457 2575
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 2581
1464 return flags; 2582 return flags;
1465} 2583}
1466 2584
1467unsigned int 2585unsigned int ecb_cold
1468ev_recommended_backends (void) 2586ev_recommended_backends (void) EV_THROW
1469{ 2587{
1470 unsigned int flags = ev_supported_backends (); 2588 unsigned int flags = ev_supported_backends ();
1471 2589
1472#ifndef __NetBSD__ 2590#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 2591 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 2595#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 2596 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2597 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2598 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 2599#endif
2600#ifdef __FreeBSD__
2601 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2602#endif
1482 2603
1483 return flags; 2604 return flags;
1484} 2605}
1485 2606
2607unsigned int ecb_cold
2608ev_embeddable_backends (void) EV_THROW
2609{
2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2611
2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2614 flags &= ~EVBACKEND_EPOLL;
2615
2616 return flags;
2617}
2618
1486unsigned int 2619unsigned int
1487ev_embeddable_backends (void) 2620ev_backend (EV_P) EV_THROW
1488{ 2621{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2622 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} 2623}
1497 2624
2625#if EV_FEATURE_API
1498unsigned int 2626unsigned int
1499ev_backend (EV_P) 2627ev_iteration (EV_P) EV_THROW
1500{ 2628{
1501 return backend; 2629 return loop_count;
1502} 2630}
1503 2631
1504#if EV_MINIMAL < 2
1505unsigned int 2632unsigned int
1506ev_loop_count (EV_P) 2633ev_depth (EV_P) EV_THROW
1507{
1508 return loop_count;
1509}
1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{ 2634{
1514 return loop_depth; 2635 return loop_depth;
1515} 2636}
1516 2637
1517void 2638void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1519{ 2640{
1520 io_blocktime = interval; 2641 io_blocktime = interval;
1521} 2642}
1522 2643
1523void 2644void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2646{
1526 timeout_blocktime = interval; 2647 timeout_blocktime = interval;
1527} 2648}
1528 2649
1529void 2650void
1530ev_set_userdata (EV_P_ void *data) 2651ev_set_userdata (EV_P_ void *data) EV_THROW
1531{ 2652{
1532 userdata = data; 2653 userdata = data;
1533} 2654}
1534 2655
1535void * 2656void *
1536ev_userdata (EV_P) 2657ev_userdata (EV_P) EV_THROW
1537{ 2658{
1538 return userdata; 2659 return userdata;
1539} 2660}
1540 2661
2662void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1542{ 2664{
1543 invoke_cb = invoke_pending_cb; 2665 invoke_cb = invoke_pending_cb;
1544} 2666}
1545 2667
2668void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1547{ 2670{
1548 release_cb = release; 2671 release_cb = release;
1549 acquire_cb = acquire; 2672 acquire_cb = acquire;
1550} 2673}
1551#endif 2674#endif
1552 2675
1553/* initialise a loop structure, must be zero-initialised */ 2676/* initialise a loop structure, must be zero-initialised */
1554static void noinline 2677static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 2678loop_init (EV_P_ unsigned int flags) EV_THROW
1556{ 2679{
1557 if (!backend) 2680 if (!backend)
1558 { 2681 {
2682 origflags = flags;
2683
1559#if EV_USE_REALTIME 2684#if EV_USE_REALTIME
1560 if (!have_realtime) 2685 if (!have_realtime)
1561 { 2686 {
1562 struct timespec ts; 2687 struct timespec ts;
1563 2688
… …
1585 if (!(flags & EVFLAG_NOENV) 2710 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 2711 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 2712 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 2713 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 2714
1590 ev_rt_now = ev_time (); 2715 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 2716 mn_now = get_clock ();
1592 now_floor = mn_now; 2717 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 2718 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 2719#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 2720 invoke_cb = ev_invoke_pending;
1596#endif 2721#endif
1597 2722
1598 io_blocktime = 0.; 2723 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 2724 timeout_blocktime = 0.;
1600 backend = 0; 2725 backend = 0;
1601 backend_fd = -1; 2726 backend_fd = -1;
1602 sig_pending = 0; 2727 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 2728#if EV_ASYNC_ENABLE
1604 async_pending = 0; 2729 async_pending = 0;
1605#endif 2730#endif
2731 pipe_write_skipped = 0;
2732 pipe_write_wanted = 0;
2733 evpipe [0] = -1;
2734 evpipe [1] = -1;
1606#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 2737#endif
1609#if EV_USE_SIGNALFD 2738#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 2740#endif
1612 2741
1613 if (!(flags & 0x0000ffffU)) 2742 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 2743 flags |= ev_recommended_backends ();
1615 2744
2745#if EV_USE_IOCP
2746 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2747#endif
1616#if EV_USE_PORT 2748#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2749 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 2750#endif
1619#if EV_USE_KQUEUE 2751#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2752 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2761 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 2762#endif
1631 2763
1632 ev_prepare_init (&pending_w, pendingcb); 2764 ev_prepare_init (&pending_w, pendingcb);
1633 2765
2766#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 2767 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 2768 ev_set_priority (&pipe_w, EV_MAXPRI);
2769#endif
1636 } 2770 }
1637} 2771}
1638 2772
1639/* free up a loop structure */ 2773/* free up a loop structure */
1640static void noinline 2774void ecb_cold
1641loop_destroy (EV_P) 2775ev_loop_destroy (EV_P)
1642{ 2776{
1643 int i; 2777 int i;
2778
2779#if EV_MULTIPLICITY
2780 /* mimic free (0) */
2781 if (!EV_A)
2782 return;
2783#endif
2784
2785#if EV_CLEANUP_ENABLE
2786 /* queue cleanup watchers (and execute them) */
2787 if (expect_false (cleanupcnt))
2788 {
2789 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2790 EV_INVOKE_PENDING;
2791 }
2792#endif
2793
2794#if EV_CHILD_ENABLE
2795 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2796 {
2797 ev_ref (EV_A); /* child watcher */
2798 ev_signal_stop (EV_A_ &childev);
2799 }
2800#endif
1644 2801
1645 if (ev_is_active (&pipe_w)) 2802 if (ev_is_active (&pipe_w))
1646 { 2803 {
1647 /*ev_ref (EV_A);*/ 2804 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 2805 /*ev_io_stop (EV_A_ &pipe_w);*/
1649 2806
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]); 2807 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1658 EV_WIN32_CLOSE_FD (evpipe [1]); 2808 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1659 }
1660 } 2809 }
1661 2810
1662#if EV_USE_SIGNALFD 2811#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 2812 if (ev_is_active (&sigfd_w))
1664 close (sigfd); 2813 close (sigfd);
… …
1670#endif 2819#endif
1671 2820
1672 if (backend_fd >= 0) 2821 if (backend_fd >= 0)
1673 close (backend_fd); 2822 close (backend_fd);
1674 2823
2824#if EV_USE_IOCP
2825 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2826#endif
1675#if EV_USE_PORT 2827#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2828 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 2829#endif
1678#if EV_USE_KQUEUE 2830#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2831 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1706 array_free (periodic, EMPTY); 2858 array_free (periodic, EMPTY);
1707#endif 2859#endif
1708#if EV_FORK_ENABLE 2860#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 2861 array_free (fork, EMPTY);
1710#endif 2862#endif
2863#if EV_CLEANUP_ENABLE
2864 array_free (cleanup, EMPTY);
2865#endif
1711 array_free (prepare, EMPTY); 2866 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 2867 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 2868#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 2869 array_free (async, EMPTY);
1715#endif 2870#endif
1716 2871
1717 backend = 0; 2872 backend = 0;
2873
2874#if EV_MULTIPLICITY
2875 if (ev_is_default_loop (EV_A))
2876#endif
2877 ev_default_loop_ptr = 0;
2878#if EV_MULTIPLICITY
2879 else
2880 ev_free (EV_A);
2881#endif
1718} 2882}
1719 2883
1720#if EV_USE_INOTIFY 2884#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 2885inline_size void infy_fork (EV_P);
1722#endif 2886#endif
… …
1735#endif 2899#endif
1736#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1737 infy_fork (EV_A); 2901 infy_fork (EV_A);
1738#endif 2902#endif
1739 2903
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1740 if (ev_is_active (&pipe_w)) 2905 if (ev_is_active (&pipe_w))
1741 { 2906 {
1742 /* this "locks" the handlers against writing to the pipe */ 2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1743 /* while we modify the fd vars */
1744 sig_pending = 1;
1745#if EV_ASYNC_ENABLE
1746 async_pending = 1;
1747#endif
1748 2908
1749 ev_ref (EV_A); 2909 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 2910 ev_io_stop (EV_A_ &pipe_w);
1751 2911
1752#if EV_USE_EVENTFD
1753 if (evfd >= 0)
1754 close (evfd);
1755#endif
1756
1757 if (evpipe [0] >= 0) 2912 if (evpipe [0] >= 0)
1758 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 2913 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]);
1761 }
1762 2914
1763 evpipe_init (EV_A); 2915 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */ 2916 /* iterate over everything, in case we missed something before */
1765 pipecb (EV_A_ &pipe_w, EV_READ); 2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1766 } 2918 }
2919#endif
1767 2920
1768 postfork = 0; 2921 postfork = 0;
1769} 2922}
1770 2923
1771#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
1772 2925
1773struct ev_loop * 2926struct ev_loop * ecb_cold
1774ev_loop_new (unsigned int flags) 2927ev_loop_new (unsigned int flags) EV_THROW
1775{ 2928{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 2930
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 2931 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 2932 loop_init (EV_A_ flags);
1780 2933
1781 if (ev_backend (EV_A)) 2934 if (ev_backend (EV_A))
1782 return EV_A; 2935 return EV_A;
1783 2936
2937 ev_free (EV_A);
1784 return 0; 2938 return 0;
1785} 2939}
1786 2940
1787void
1788ev_loop_destroy (EV_P)
1789{
1790 loop_destroy (EV_A);
1791 ev_free (loop);
1792}
1793
1794void
1795ev_loop_fork (EV_P)
1796{
1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */ 2941#endif /* multiplicity */
1800 2942
1801#if EV_VERIFY 2943#if EV_VERIFY
1802static void noinline 2944static void noinline ecb_cold
1803verify_watcher (EV_P_ W w) 2945verify_watcher (EV_P_ W w)
1804{ 2946{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 2948
1807 if (w->pending) 2949 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 2951}
1810 2952
1811static void noinline 2953static void noinline ecb_cold
1812verify_heap (EV_P_ ANHE *heap, int N) 2954verify_heap (EV_P_ ANHE *heap, int N)
1813{ 2955{
1814 int i; 2956 int i;
1815 2957
1816 for (i = HEAP0; i < N + HEAP0; ++i) 2958 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 2963
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 2965 }
1824} 2966}
1825 2967
1826static void noinline 2968static void noinline ecb_cold
1827array_verify (EV_P_ W *ws, int cnt) 2969array_verify (EV_P_ W *ws, int cnt)
1828{ 2970{
1829 while (cnt--) 2971 while (cnt--)
1830 { 2972 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 2974 verify_watcher (EV_A_ ws [cnt]);
1833 } 2975 }
1834} 2976}
1835#endif 2977#endif
1836 2978
1837#if EV_MINIMAL < 2 2979#if EV_FEATURE_API
1838void 2980void ecb_cold
1839ev_loop_verify (EV_P) 2981ev_verify (EV_P) EV_THROW
1840{ 2982{
1841#if EV_VERIFY 2983#if EV_VERIFY
1842 int i; 2984 int i;
1843 WL w; 2985 WL w, w2;
1844 2986
1845 assert (activecnt >= -1); 2987 assert (activecnt >= -1);
1846 2988
1847 assert (fdchangemax >= fdchangecnt); 2989 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 2990 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 2992
1851 assert (anfdmax >= 0); 2993 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 2994 for (i = 0; i < anfdmax; ++i)
2995 {
2996 int j = 0;
2997
1853 for (w = anfds [i].head; w; w = w->next) 2998 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 2999 {
1855 verify_watcher (EV_A_ (W)w); 3000 verify_watcher (EV_A_ (W)w);
3001
3002 if (j++ & 1)
3003 {
3004 assert (("libev: io watcher list contains a loop", w != w2));
3005 w2 = w2->next;
3006 }
3007
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3008 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3009 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 3010 }
3011 }
1859 3012
1860 assert (timermax >= timercnt); 3013 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 3014 verify_heap (EV_A_ timers, timercnt);
1862 3015
1863#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 3031#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 3032 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 3033 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 3034#endif
1882 3035
3036#if EV_CLEANUP_ENABLE
3037 assert (cleanupmax >= cleanupcnt);
3038 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3039#endif
3040
1883#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 3042 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 3043 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 3044#endif
1887 3045
3046#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 3047 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 3048 array_verify (EV_A_ (W *)prepares, preparecnt);
3049#endif
1890 3050
3051#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 3052 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 3053 array_verify (EV_A_ (W *)checks, checkcnt);
3054#endif
1893 3055
1894# if 0 3056# if 0
3057#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3058 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3059 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3060#endif
1897# endif 3061# endif
1898#endif 3062#endif
1899} 3063}
1900#endif 3064#endif
1901 3065
1902#if EV_MULTIPLICITY 3066#if EV_MULTIPLICITY
1903struct ev_loop * 3067struct ev_loop * ecb_cold
1904ev_default_loop_init (unsigned int flags)
1905#else 3068#else
1906int 3069int
3070#endif
1907ev_default_loop (unsigned int flags) 3071ev_default_loop (unsigned int flags) EV_THROW
1908#endif
1909{ 3072{
1910 if (!ev_default_loop_ptr) 3073 if (!ev_default_loop_ptr)
1911 { 3074 {
1912#if EV_MULTIPLICITY 3075#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 3076 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 3080
1918 loop_init (EV_A_ flags); 3081 loop_init (EV_A_ flags);
1919 3082
1920 if (ev_backend (EV_A)) 3083 if (ev_backend (EV_A))
1921 { 3084 {
1922#ifndef _WIN32 3085#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 3086 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 3087 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 3088 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3089 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 3090#endif
… …
1932 3095
1933 return ev_default_loop_ptr; 3096 return ev_default_loop_ptr;
1934} 3097}
1935 3098
1936void 3099void
1937ev_default_destroy (void) 3100ev_loop_fork (EV_P) EV_THROW
1938{ 3101{
1939#if EV_MULTIPLICITY 3102 postfork = 1;
1940 EV_P = ev_default_loop_ptr;
1941#endif
1942
1943 ev_default_loop_ptr = 0;
1944
1945#ifndef _WIN32
1946 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev);
1948#endif
1949
1950 loop_destroy (EV_A);
1951}
1952
1953void
1954ev_default_fork (void)
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = ev_default_loop_ptr;
1958#endif
1959
1960 postfork = 1; /* must be in line with ev_loop_fork */
1961} 3103}
1962 3104
1963/*****************************************************************************/ 3105/*****************************************************************************/
1964 3106
1965void 3107void
… …
1967{ 3109{
1968 EV_CB_INVOKE ((W)w, revents); 3110 EV_CB_INVOKE ((W)w, revents);
1969} 3111}
1970 3112
1971unsigned int 3113unsigned int
1972ev_pending_count (EV_P) 3114ev_pending_count (EV_P) EV_THROW
1973{ 3115{
1974 int pri; 3116 int pri;
1975 unsigned int count = 0; 3117 unsigned int count = 0;
1976 3118
1977 for (pri = NUMPRI; pri--; ) 3119 for (pri = NUMPRI; pri--; )
… …
1981} 3123}
1982 3124
1983void noinline 3125void noinline
1984ev_invoke_pending (EV_P) 3126ev_invoke_pending (EV_P)
1985{ 3127{
1986 int pri; 3128 pendingpri = NUMPRI;
1987 3129
1988 for (pri = NUMPRI; pri--; ) 3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3131 {
3132 --pendingpri;
3133
1989 while (pendingcnt [pri]) 3134 while (pendingcnt [pendingpri])
1990 { 3135 {
1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1992 3137
1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1995
1996 p->w->pending = 0; 3138 p->w->pending = 0;
1997 EV_CB_INVOKE (p->w, p->events); 3139 EV_CB_INVOKE (p->w, p->events);
1998 EV_FREQUENT_CHECK; 3140 EV_FREQUENT_CHECK;
1999 } 3141 }
3142 }
2000} 3143}
2001 3144
2002#if EV_IDLE_ENABLE 3145#if EV_IDLE_ENABLE
2003/* make idle watchers pending. this handles the "call-idle */ 3146/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */ 3147/* only when higher priorities are idle" logic */
… …
2056 EV_FREQUENT_CHECK; 3199 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 3200 feed_reverse (EV_A_ (W)w);
2058 } 3201 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3202 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 3203
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 3204 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 3205 }
2063} 3206}
2064 3207
2065#if EV_PERIODIC_ENABLE 3208#if EV_PERIODIC_ENABLE
3209
3210static void noinline
3211periodic_recalc (EV_P_ ev_periodic *w)
3212{
3213 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3214 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3215
3216 /* the above almost always errs on the low side */
3217 while (at <= ev_rt_now)
3218 {
3219 ev_tstamp nat = at + w->interval;
3220
3221 /* when resolution fails us, we use ev_rt_now */
3222 if (expect_false (nat == at))
3223 {
3224 at = ev_rt_now;
3225 break;
3226 }
3227
3228 at = nat;
3229 }
3230
3231 ev_at (w) = at;
3232}
3233
2066/* make periodics pending */ 3234/* make periodics pending */
2067inline_size void 3235inline_size void
2068periodics_reify (EV_P) 3236periodics_reify (EV_P)
2069{ 3237{
2070 EV_FREQUENT_CHECK; 3238 EV_FREQUENT_CHECK;
2071 3239
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 3241 {
2074 int feed_count = 0;
2075
2076 do 3242 do
2077 { 3243 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3244 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 3245
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3246 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 3255 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 3256 downheap (periodics, periodiccnt, HEAP0);
2091 } 3257 }
2092 else if (w->interval) 3258 else if (w->interval)
2093 { 3259 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3260 periodic_recalc (EV_A_ w);
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]); 3261 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 3262 downheap (periodics, periodiccnt, HEAP0);
2110 } 3263 }
2111 else 3264 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3265 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 3272 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 3273 }
2121} 3274}
2122 3275
2123/* simply recalculate all periodics */ 3276/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3277/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 3278static void noinline ecb_cold
2126periodics_reschedule (EV_P) 3279periodics_reschedule (EV_P)
2127{ 3280{
2128 int i; 3281 int i;
2129 3282
2130 /* adjust periodics after time jump */ 3283 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3286 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 3287
2135 if (w->reschedule_cb) 3288 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3289 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 3290 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3291 periodic_recalc (EV_A_ w);
2139 3292
2140 ANHE_at_cache (periodics [i]); 3293 ANHE_at_cache (periodics [i]);
2141 } 3294 }
2142 3295
2143 reheap (periodics, periodiccnt); 3296 reheap (periodics, periodiccnt);
2144} 3297}
2145#endif 3298#endif
2146 3299
2147/* adjust all timers by a given offset */ 3300/* adjust all timers by a given offset */
2148static void noinline 3301static void noinline ecb_cold
2149timers_reschedule (EV_P_ ev_tstamp adjust) 3302timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 3303{
2151 int i; 3304 int i;
2152 3305
2153 for (i = 0; i < timercnt; ++i) 3306 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 3310 ANHE_at_cache (*he);
2158 } 3311 }
2159} 3312}
2160 3313
2161/* fetch new monotonic and realtime times from the kernel */ 3314/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 3315/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 3316inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 3317time_update (EV_P_ ev_tstamp max_block)
2165{ 3318{
2166#if EV_USE_MONOTONIC 3319#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 3320 if (expect_true (have_monotonic))
… …
2190 * doesn't hurt either as we only do this on time-jumps or 3343 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 3344 * in the unlikely event of having been preempted here.
2192 */ 3345 */
2193 for (i = 4; --i; ) 3346 for (i = 4; --i; )
2194 { 3347 {
3348 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 3349 rtmn_diff = ev_rt_now - mn_now;
2196 3350
3351 diff = odiff - rtmn_diff;
3352
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3353 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2198 return; /* all is well */ 3354 return; /* all is well */
2199 3355
2200 ev_rt_now = ev_time (); 3356 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 3357 mn_now = get_clock ();
2202 now_floor = mn_now; 3358 now_floor = mn_now;
… …
2224 3380
2225 mn_now = ev_rt_now; 3381 mn_now = ev_rt_now;
2226 } 3382 }
2227} 3383}
2228 3384
2229void 3385int
2230ev_loop (EV_P_ int flags) 3386ev_run (EV_P_ int flags)
2231{ 3387{
2232#if EV_MINIMAL < 2 3388#if EV_FEATURE_API
2233 ++loop_depth; 3389 ++loop_depth;
2234#endif 3390#endif
2235 3391
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 3393
2238 loop_done = EVUNLOOP_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
2239 3395
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 3397
2242 do 3398 do
2243 { 3399 {
2244#if EV_VERIFY >= 2 3400#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 3401 ev_verify (EV_A);
2246#endif 3402#endif
2247 3403
2248#ifndef _WIN32 3404#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 3405 if (expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 3406 if (expect_false (getpid () != curpid))
… …
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 3419 EV_INVOKE_PENDING;
2264 } 3420 }
2265#endif 3421#endif
2266 3422
3423#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 3424 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 3425 if (expect_false (preparecnt))
2269 { 3426 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 3428 EV_INVOKE_PENDING;
2272 } 3429 }
3430#endif
2273 3431
2274 if (expect_false (loop_done)) 3432 if (expect_false (loop_done))
2275 break; 3433 break;
2276 3434
2277 /* we might have forked, so reify kernel state if necessary */ 3435 /* we might have forked, so reify kernel state if necessary */
… …
2284 /* calculate blocking time */ 3442 /* calculate blocking time */
2285 { 3443 {
2286 ev_tstamp waittime = 0.; 3444 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 3445 ev_tstamp sleeptime = 0.;
2288 3446
3447 /* remember old timestamp for io_blocktime calculation */
3448 ev_tstamp prev_mn_now = mn_now;
3449
3450 /* update time to cancel out callback processing overhead */
3451 time_update (EV_A_ 1e100);
3452
3453 /* from now on, we want a pipe-wake-up */
3454 pipe_write_wanted = 1;
3455
3456 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3457
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 3459 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 3460 waittime = MAX_BLOCKTIME;
2298 3461
2299 if (timercnt) 3462 if (timercnt)
2300 { 3463 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 3465 if (waittime > to) waittime = to;
2303 } 3466 }
2304 3467
2305#if EV_PERIODIC_ENABLE 3468#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 3469 if (periodiccnt)
2307 { 3470 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3471 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 3472 if (waittime > to) waittime = to;
2310 } 3473 }
2311#endif 3474#endif
2312 3475
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3476 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 3477 if (expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 3478 waittime = timeout_blocktime;
3479
3480 /* at this point, we NEED to wait, so we have to ensure */
3481 /* to pass a minimum nonzero value to the backend */
3482 if (expect_false (waittime < backend_mintime))
3483 waittime = backend_mintime;
2316 3484
2317 /* extra check because io_blocktime is commonly 0 */ 3485 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 3486 if (expect_false (io_blocktime))
2319 { 3487 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3488 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 3489
2322 if (sleeptime > waittime - backend_fudge) 3490 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 3491 sleeptime = waittime - backend_mintime;
2324 3492
2325 if (expect_true (sleeptime > 0.)) 3493 if (expect_true (sleeptime > 0.))
2326 { 3494 {
2327 ev_sleep (sleeptime); 3495 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 3496 waittime -= sleeptime;
2329 } 3497 }
2330 } 3498 }
2331 } 3499 }
2332 3500
2333#if EV_MINIMAL < 2 3501#if EV_FEATURE_API
2334 ++loop_count; 3502 ++loop_count;
2335#endif 3503#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3504 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 3505 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3506 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3507
3508 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3509
3510 ECB_MEMORY_FENCE_ACQUIRE;
3511 if (pipe_write_skipped)
3512 {
3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3515 }
3516
2339 3517
2340 /* update ev_rt_now, do magic */ 3518 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 3519 time_update (EV_A_ waittime + sleeptime);
2342 } 3520 }
2343 3521
… …
2350#if EV_IDLE_ENABLE 3528#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 3529 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 3530 idle_reify (EV_A);
2353#endif 3531#endif
2354 3532
3533#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 3534 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 3535 if (expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3536 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3537#endif
2358 3538
2359 EV_INVOKE_PENDING; 3539 EV_INVOKE_PENDING;
2360 } 3540 }
2361 while (expect_true ( 3541 while (expect_true (
2362 activecnt 3542 activecnt
2363 && !loop_done 3543 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3544 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 3545 ));
2366 3546
2367 if (loop_done == EVUNLOOP_ONE) 3547 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 3548 loop_done = EVBREAK_CANCEL;
2369 3549
2370#if EV_MINIMAL < 2 3550#if EV_FEATURE_API
2371 --loop_depth; 3551 --loop_depth;
2372#endif 3552#endif
3553
3554 return activecnt;
2373} 3555}
2374 3556
2375void 3557void
2376ev_unloop (EV_P_ int how) 3558ev_break (EV_P_ int how) EV_THROW
2377{ 3559{
2378 loop_done = how; 3560 loop_done = how;
2379} 3561}
2380 3562
2381void 3563void
2382ev_ref (EV_P) 3564ev_ref (EV_P) EV_THROW
2383{ 3565{
2384 ++activecnt; 3566 ++activecnt;
2385} 3567}
2386 3568
2387void 3569void
2388ev_unref (EV_P) 3570ev_unref (EV_P) EV_THROW
2389{ 3571{
2390 --activecnt; 3572 --activecnt;
2391} 3573}
2392 3574
2393void 3575void
2394ev_now_update (EV_P) 3576ev_now_update (EV_P) EV_THROW
2395{ 3577{
2396 time_update (EV_A_ 1e100); 3578 time_update (EV_A_ 1e100);
2397} 3579}
2398 3580
2399void 3581void
2400ev_suspend (EV_P) 3582ev_suspend (EV_P) EV_THROW
2401{ 3583{
2402 ev_now_update (EV_A); 3584 ev_now_update (EV_A);
2403} 3585}
2404 3586
2405void 3587void
2406ev_resume (EV_P) 3588ev_resume (EV_P) EV_THROW
2407{ 3589{
2408 ev_tstamp mn_prev = mn_now; 3590 ev_tstamp mn_prev = mn_now;
2409 3591
2410 ev_now_update (EV_A); 3592 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 3593 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2450 w->pending = 0; 3632 w->pending = 0;
2451 } 3633 }
2452} 3634}
2453 3635
2454int 3636int
2455ev_clear_pending (EV_P_ void *w) 3637ev_clear_pending (EV_P_ void *w) EV_THROW
2456{ 3638{
2457 W w_ = (W)w; 3639 W w_ = (W)w;
2458 int pending = w_->pending; 3640 int pending = w_->pending;
2459 3641
2460 if (expect_true (pending)) 3642 if (expect_true (pending))
… …
2493} 3675}
2494 3676
2495/*****************************************************************************/ 3677/*****************************************************************************/
2496 3678
2497void noinline 3679void noinline
2498ev_io_start (EV_P_ ev_io *w) 3680ev_io_start (EV_P_ ev_io *w) EV_THROW
2499{ 3681{
2500 int fd = w->fd; 3682 int fd = w->fd;
2501 3683
2502 if (expect_false (ev_is_active (w))) 3684 if (expect_false (ev_is_active (w)))
2503 return; 3685 return;
2504 3686
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3687 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3688 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 3689
2508 EV_FREQUENT_CHECK; 3690 EV_FREQUENT_CHECK;
2509 3691
2510 ev_start (EV_A_ (W)w, 1); 3692 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2512 wlist_add (&anfds[fd].head, (WL)w); 3694 wlist_add (&anfds[fd].head, (WL)w);
2513 3695
3696 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3699 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 3700 w->events &= ~EV__IOFDSET;
2516 3701
2517 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2518} 3703}
2519 3704
2520void noinline 3705void noinline
2521ev_io_stop (EV_P_ ev_io *w) 3706ev_io_stop (EV_P_ ev_io *w) EV_THROW
2522{ 3707{
2523 clear_pending (EV_A_ (W)w); 3708 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3709 if (expect_false (!ev_is_active (w)))
2525 return; 3710 return;
2526 3711
… …
2529 EV_FREQUENT_CHECK; 3714 EV_FREQUENT_CHECK;
2530 3715
2531 wlist_del (&anfds[w->fd].head, (WL)w); 3716 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 3717 ev_stop (EV_A_ (W)w);
2533 3718
2534 fd_change (EV_A_ w->fd, 1); 3719 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 3720
2536 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
2537} 3722}
2538 3723
2539void noinline 3724void noinline
2540ev_timer_start (EV_P_ ev_timer *w) 3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2541{ 3726{
2542 if (expect_false (ev_is_active (w))) 3727 if (expect_false (ev_is_active (w)))
2543 return; 3728 return;
2544 3729
2545 ev_at (w) += mn_now; 3730 ev_at (w) += mn_now;
… …
2559 3744
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 3746}
2562 3747
2563void noinline 3748void noinline
2564ev_timer_stop (EV_P_ ev_timer *w) 3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2565{ 3750{
2566 clear_pending (EV_A_ (W)w); 3751 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3752 if (expect_false (!ev_is_active (w)))
2568 return; 3753 return;
2569 3754
… …
2581 timers [active] = timers [timercnt + HEAP0]; 3766 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 3767 adjustheap (timers, timercnt, active);
2583 } 3768 }
2584 } 3769 }
2585 3770
2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now; 3771 ev_at (w) -= mn_now;
2589 3772
2590 ev_stop (EV_A_ (W)w); 3773 ev_stop (EV_A_ (W)w);
3774
3775 EV_FREQUENT_CHECK;
2591} 3776}
2592 3777
2593void noinline 3778void noinline
2594ev_timer_again (EV_P_ ev_timer *w) 3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2595{ 3780{
2596 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
3782
3783 clear_pending (EV_A_ (W)w);
2597 3784
2598 if (ev_is_active (w)) 3785 if (ev_is_active (w))
2599 { 3786 {
2600 if (w->repeat) 3787 if (w->repeat)
2601 { 3788 {
… …
2614 3801
2615 EV_FREQUENT_CHECK; 3802 EV_FREQUENT_CHECK;
2616} 3803}
2617 3804
2618ev_tstamp 3805ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2620{ 3807{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2622} 3809}
2623 3810
2624#if EV_PERIODIC_ENABLE 3811#if EV_PERIODIC_ENABLE
2625void noinline 3812void noinline
2626ev_periodic_start (EV_P_ ev_periodic *w) 3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2627{ 3814{
2628 if (expect_false (ev_is_active (w))) 3815 if (expect_false (ev_is_active (w)))
2629 return; 3816 return;
2630 3817
2631 if (w->reschedule_cb) 3818 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3819 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 3820 else if (w->interval)
2634 { 3821 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3822 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2636 /* this formula differs from the one in periodic_reify because we do not always round up */ 3823 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 3824 }
2639 else 3825 else
2640 ev_at (w) = w->offset; 3826 ev_at (w) = w->offset;
2641 3827
2642 EV_FREQUENT_CHECK; 3828 EV_FREQUENT_CHECK;
… …
2652 3838
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 3840}
2655 3841
2656void noinline 3842void noinline
2657ev_periodic_stop (EV_P_ ev_periodic *w) 3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2658{ 3844{
2659 clear_pending (EV_A_ (W)w); 3845 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 3846 if (expect_false (!ev_is_active (w)))
2661 return; 3847 return;
2662 3848
… …
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 3860 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 3861 adjustheap (periodics, periodiccnt, active);
2676 } 3862 }
2677 } 3863 }
2678 3864
2679 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
3866
3867 EV_FREQUENT_CHECK;
2682} 3868}
2683 3869
2684void noinline 3870void noinline
2685ev_periodic_again (EV_P_ ev_periodic *w) 3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2686{ 3872{
2687 /* TODO: use adjustheap and recalculation */ 3873 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 3874 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 3875 ev_periodic_start (EV_A_ w);
2690} 3876}
… …
2692 3878
2693#ifndef SA_RESTART 3879#ifndef SA_RESTART
2694# define SA_RESTART 0 3880# define SA_RESTART 0
2695#endif 3881#endif
2696 3882
3883#if EV_SIGNAL_ENABLE
3884
2697void noinline 3885void noinline
2698ev_signal_start (EV_P_ ev_signal *w) 3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2699{ 3887{
2700 if (expect_false (ev_is_active (w))) 3888 if (expect_false (ev_is_active (w)))
2701 return; 3889 return;
2702 3890
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2705#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops", 3894 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3895 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2708 3896
2709 signals [w->signum - 1].loop = EV_A; 3897 signals [w->signum - 1].loop = EV_A;
3898 ECB_MEMORY_FENCE_RELEASE;
2710#endif 3899#endif
2711 3900
2712 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2713 3902
2714#if EV_USE_SIGNALFD 3903#if EV_USE_SIGNALFD
… …
2747 if (!((WL)w)->next) 3936 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD 3937# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/ 3938 if (sigfd < 0) /*TODO*/
2750# endif 3939# endif
2751 { 3940 {
2752# if _WIN32 3941# ifdef _WIN32
2753 evpipe_init (EV_A); 3942 evpipe_init (EV_A);
2754 3943
2755 signal (w->signum, ev_sighandler); 3944 signal (w->signum, ev_sighandler);
2756# else 3945# else
2757 struct sigaction sa; 3946 struct sigaction sa;
… …
2761 sa.sa_handler = ev_sighandler; 3950 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 3951 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3952 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 3953 sigaction (w->signum, &sa, 0);
2765 3954
3955 if (origflags & EVFLAG_NOSIGMASK)
3956 {
2766 sigemptyset (&sa.sa_mask); 3957 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 3958 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3959 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3960 }
2769#endif 3961#endif
2770 } 3962 }
2771 3963
2772 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
2773} 3965}
2774 3966
2775void noinline 3967void noinline
2776ev_signal_stop (EV_P_ ev_signal *w) 3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2777{ 3969{
2778 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 3971 if (expect_false (!ev_is_active (w)))
2780 return; 3972 return;
2781 3973
… …
2790 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3982 signals [w->signum - 1].loop = 0; /* unattach from signal */
2791#endif 3983#endif
2792#if EV_USE_SIGNALFD 3984#if EV_USE_SIGNALFD
2793 if (sigfd >= 0) 3985 if (sigfd >= 0)
2794 { 3986 {
2795 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3987 sigset_t ss;
3988
3989 sigemptyset (&ss);
3990 sigaddset (&ss, w->signum);
2796 sigdelset (&sigfd_set, w->signum); 3991 sigdelset (&sigfd_set, w->signum);
3992
2797 signalfd (sigfd, &sigfd_set, 0); 3993 signalfd (sigfd, &sigfd_set, 0);
2798 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3994 sigprocmask (SIG_UNBLOCK, &ss, 0);
2799 /*TODO: maybe unblock signal? */
2800 } 3995 }
2801 else 3996 else
2802#endif 3997#endif
2803 signal (w->signum, SIG_DFL); 3998 signal (w->signum, SIG_DFL);
2804 } 3999 }
2805 4000
2806 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
2807} 4002}
2808 4003
4004#endif
4005
4006#if EV_CHILD_ENABLE
4007
2809void 4008void
2810ev_child_start (EV_P_ ev_child *w) 4009ev_child_start (EV_P_ ev_child *w) EV_THROW
2811{ 4010{
2812#if EV_MULTIPLICITY 4011#if EV_MULTIPLICITY
2813 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2814#endif 4013#endif
2815 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
2816 return; 4015 return;
2817 4016
2818 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2819 4018
2820 ev_start (EV_A_ (W)w, 1); 4019 ev_start (EV_A_ (W)w, 1);
2821 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4020 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2822 4021
2823 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
2824} 4023}
2825 4024
2826void 4025void
2827ev_child_stop (EV_P_ ev_child *w) 4026ev_child_stop (EV_P_ ev_child *w) EV_THROW
2828{ 4027{
2829 clear_pending (EV_A_ (W)w); 4028 clear_pending (EV_A_ (W)w);
2830 if (expect_false (!ev_is_active (w))) 4029 if (expect_false (!ev_is_active (w)))
2831 return; 4030 return;
2832 4031
2833 EV_FREQUENT_CHECK; 4032 EV_FREQUENT_CHECK;
2834 4033
2835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4034 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2836 ev_stop (EV_A_ (W)w); 4035 ev_stop (EV_A_ (W)w);
2837 4036
2838 EV_FREQUENT_CHECK; 4037 EV_FREQUENT_CHECK;
2839} 4038}
4039
4040#endif
2840 4041
2841#if EV_STAT_ENABLE 4042#if EV_STAT_ENABLE
2842 4043
2843# ifdef _WIN32 4044# ifdef _WIN32
2844# undef lstat 4045# undef lstat
… …
2850#define MIN_STAT_INTERVAL 0.1074891 4051#define MIN_STAT_INTERVAL 0.1074891
2851 4052
2852static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4053static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2853 4054
2854#if EV_USE_INOTIFY 4055#if EV_USE_INOTIFY
2855# define EV_INOTIFY_BUFSIZE 8192 4056
4057/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2856 4059
2857static void noinline 4060static void noinline
2858infy_add (EV_P_ ev_stat *w) 4061infy_add (EV_P_ ev_stat *w)
2859{ 4062{
2860 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); 4063 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4066 | IN_DONT_FOLLOW | IN_MASK_ADD);
2861 4067
2862 if (w->wd >= 0) 4068 if (w->wd >= 0)
2863 { 4069 {
2864 struct statfs sfs; 4070 struct statfs sfs;
2865 4071
… …
2869 4075
2870 if (!fs_2625) 4076 if (!fs_2625)
2871 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4077 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2872 else if (!statfs (w->path, &sfs) 4078 else if (!statfs (w->path, &sfs)
2873 && (sfs.f_type == 0x1373 /* devfs */ 4079 && (sfs.f_type == 0x1373 /* devfs */
4080 || sfs.f_type == 0x4006 /* fat */
4081 || sfs.f_type == 0x4d44 /* msdos */
2874 || sfs.f_type == 0xEF53 /* ext2/3 */ 4082 || sfs.f_type == 0xEF53 /* ext2/3 */
4083 || sfs.f_type == 0x72b6 /* jffs2 */
4084 || sfs.f_type == 0x858458f6 /* ramfs */
4085 || sfs.f_type == 0x5346544e /* ntfs */
2875 || sfs.f_type == 0x3153464a /* jfs */ 4086 || sfs.f_type == 0x3153464a /* jfs */
4087 || sfs.f_type == 0x9123683e /* btrfs */
2876 || sfs.f_type == 0x52654973 /* reiser3 */ 4088 || sfs.f_type == 0x52654973 /* reiser3 */
2877 || sfs.f_type == 0x01021994 /* tempfs */ 4089 || sfs.f_type == 0x01021994 /* tmpfs */
2878 || sfs.f_type == 0x58465342 /* xfs */)) 4090 || sfs.f_type == 0x58465342 /* xfs */))
2879 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4091 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2880 else 4092 else
2881 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4093 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2882 } 4094 }
… …
2903 if (!pend || pend == path) 4115 if (!pend || pend == path)
2904 break; 4116 break;
2905 4117
2906 *pend = 0; 4118 *pend = 0;
2907 w->wd = inotify_add_watch (fs_fd, path, mask); 4119 w->wd = inotify_add_watch (fs_fd, path, mask);
2908 } 4120 }
2909 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4121 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2910 } 4122 }
2911 } 4123 }
2912 4124
2913 if (w->wd >= 0) 4125 if (w->wd >= 0)
2914 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4126 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2915 4127
2916 /* now re-arm timer, if required */ 4128 /* now re-arm timer, if required */
2917 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4129 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2918 ev_timer_again (EV_A_ &w->timer); 4130 ev_timer_again (EV_A_ &w->timer);
2919 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4131 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2927 4139
2928 if (wd < 0) 4140 if (wd < 0)
2929 return; 4141 return;
2930 4142
2931 w->wd = -2; 4143 w->wd = -2;
2932 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4144 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2933 wlist_del (&fs_hash [slot].head, (WL)w); 4145 wlist_del (&fs_hash [slot].head, (WL)w);
2934 4146
2935 /* remove this watcher, if others are watching it, they will rearm */ 4147 /* remove this watcher, if others are watching it, they will rearm */
2936 inotify_rm_watch (fs_fd, wd); 4148 inotify_rm_watch (fs_fd, wd);
2937} 4149}
… …
2939static void noinline 4151static void noinline
2940infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4152infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2941{ 4153{
2942 if (slot < 0) 4154 if (slot < 0)
2943 /* overflow, need to check for all hash slots */ 4155 /* overflow, need to check for all hash slots */
2944 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4156 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2945 infy_wd (EV_A_ slot, wd, ev); 4157 infy_wd (EV_A_ slot, wd, ev);
2946 else 4158 else
2947 { 4159 {
2948 WL w_; 4160 WL w_;
2949 4161
2950 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4162 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2951 { 4163 {
2952 ev_stat *w = (ev_stat *)w_; 4164 ev_stat *w = (ev_stat *)w_;
2953 w_ = w_->next; /* lets us remove this watcher and all before it */ 4165 w_ = w_->next; /* lets us remove this watcher and all before it */
2954 4166
2955 if (w->wd == wd || wd == -1) 4167 if (w->wd == wd || wd == -1)
2956 { 4168 {
2957 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4169 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2958 { 4170 {
2959 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4171 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2960 w->wd = -1; 4172 w->wd = -1;
2961 infy_add (EV_A_ w); /* re-add, no matter what */ 4173 infy_add (EV_A_ w); /* re-add, no matter what */
2962 } 4174 }
2963 4175
2964 stat_timer_cb (EV_A_ &w->timer, 0); 4176 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2969 4181
2970static void 4182static void
2971infy_cb (EV_P_ ev_io *w, int revents) 4183infy_cb (EV_P_ ev_io *w, int revents)
2972{ 4184{
2973 char buf [EV_INOTIFY_BUFSIZE]; 4185 char buf [EV_INOTIFY_BUFSIZE];
2974 struct inotify_event *ev = (struct inotify_event *)buf;
2975 int ofs; 4186 int ofs;
2976 int len = read (fs_fd, buf, sizeof (buf)); 4187 int len = read (fs_fd, buf, sizeof (buf));
2977 4188
2978 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4189 for (ofs = 0; ofs < len; )
4190 {
4191 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2979 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4192 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4193 ofs += sizeof (struct inotify_event) + ev->len;
4194 }
2980} 4195}
2981 4196
2982inline_size void 4197inline_size void ecb_cold
2983check_2625 (EV_P) 4198ev_check_2625 (EV_P)
2984{ 4199{
2985 /* kernels < 2.6.25 are borked 4200 /* kernels < 2.6.25 are borked
2986 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2987 */ 4202 */
2988 struct utsname buf; 4203 if (ev_linux_version () < 0x020619)
2989 int major, minor, micro;
2990
2991 if (uname (&buf))
2992 return;
2993
2994 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2995 return;
2996
2997 if (major < 2
2998 || (major == 2 && minor < 6)
2999 || (major == 2 && minor == 6 && micro < 25))
3000 return; 4204 return;
3001 4205
3002 fs_2625 = 1; 4206 fs_2625 = 1;
3003} 4207}
3004 4208
3005inline_size int 4209inline_size int
3006infy_newfd (void) 4210infy_newfd (void)
3007{ 4211{
3008#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4212#if defined IN_CLOEXEC && defined IN_NONBLOCK
3009 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4213 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3010 if (fd >= 0) 4214 if (fd >= 0)
3011 return fd; 4215 return fd;
3012#endif 4216#endif
3013 return inotify_init (); 4217 return inotify_init ();
… …
3019 if (fs_fd != -2) 4223 if (fs_fd != -2)
3020 return; 4224 return;
3021 4225
3022 fs_fd = -1; 4226 fs_fd = -1;
3023 4227
3024 check_2625 (EV_A); 4228 ev_check_2625 (EV_A);
3025 4229
3026 fs_fd = infy_newfd (); 4230 fs_fd = infy_newfd ();
3027 4231
3028 if (fs_fd >= 0) 4232 if (fs_fd >= 0)
3029 { 4233 {
… …
3054 ev_io_set (&fs_w, fs_fd, EV_READ); 4258 ev_io_set (&fs_w, fs_fd, EV_READ);
3055 ev_io_start (EV_A_ &fs_w); 4259 ev_io_start (EV_A_ &fs_w);
3056 ev_unref (EV_A); 4260 ev_unref (EV_A);
3057 } 4261 }
3058 4262
3059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4263 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3060 { 4264 {
3061 WL w_ = fs_hash [slot].head; 4265 WL w_ = fs_hash [slot].head;
3062 fs_hash [slot].head = 0; 4266 fs_hash [slot].head = 0;
3063 4267
3064 while (w_) 4268 while (w_)
… …
3088#else 4292#else
3089# define EV_LSTAT(p,b) lstat (p, b) 4293# define EV_LSTAT(p,b) lstat (p, b)
3090#endif 4294#endif
3091 4295
3092void 4296void
3093ev_stat_stat (EV_P_ ev_stat *w) 4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3094{ 4298{
3095 if (lstat (w->path, &w->attr) < 0) 4299 if (lstat (w->path, &w->attr) < 0)
3096 w->attr.st_nlink = 0; 4300 w->attr.st_nlink = 0;
3097 else if (!w->attr.st_nlink) 4301 else if (!w->attr.st_nlink)
3098 w->attr.st_nlink = 1; 4302 w->attr.st_nlink = 1;
… …
3101static void noinline 4305static void noinline
3102stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4306stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3103{ 4307{
3104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4308 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3105 4309
3106 /* we copy this here each the time so that */ 4310 ev_statdata prev = w->attr;
3107 /* prev has the old value when the callback gets invoked */
3108 w->prev = w->attr;
3109 ev_stat_stat (EV_A_ w); 4311 ev_stat_stat (EV_A_ w);
3110 4312
3111 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4313 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3112 if ( 4314 if (
3113 w->prev.st_dev != w->attr.st_dev 4315 prev.st_dev != w->attr.st_dev
3114 || w->prev.st_ino != w->attr.st_ino 4316 || prev.st_ino != w->attr.st_ino
3115 || w->prev.st_mode != w->attr.st_mode 4317 || prev.st_mode != w->attr.st_mode
3116 || w->prev.st_nlink != w->attr.st_nlink 4318 || prev.st_nlink != w->attr.st_nlink
3117 || w->prev.st_uid != w->attr.st_uid 4319 || prev.st_uid != w->attr.st_uid
3118 || w->prev.st_gid != w->attr.st_gid 4320 || prev.st_gid != w->attr.st_gid
3119 || w->prev.st_rdev != w->attr.st_rdev 4321 || prev.st_rdev != w->attr.st_rdev
3120 || w->prev.st_size != w->attr.st_size 4322 || prev.st_size != w->attr.st_size
3121 || w->prev.st_atime != w->attr.st_atime 4323 || prev.st_atime != w->attr.st_atime
3122 || w->prev.st_mtime != w->attr.st_mtime 4324 || prev.st_mtime != w->attr.st_mtime
3123 || w->prev.st_ctime != w->attr.st_ctime 4325 || prev.st_ctime != w->attr.st_ctime
3124 ) { 4326 ) {
4327 /* we only update w->prev on actual differences */
4328 /* in case we test more often than invoke the callback, */
4329 /* to ensure that prev is always different to attr */
4330 w->prev = prev;
4331
3125 #if EV_USE_INOTIFY 4332 #if EV_USE_INOTIFY
3126 if (fs_fd >= 0) 4333 if (fs_fd >= 0)
3127 { 4334 {
3128 infy_del (EV_A_ w); 4335 infy_del (EV_A_ w);
3129 infy_add (EV_A_ w); 4336 infy_add (EV_A_ w);
… …
3134 ev_feed_event (EV_A_ w, EV_STAT); 4341 ev_feed_event (EV_A_ w, EV_STAT);
3135 } 4342 }
3136} 4343}
3137 4344
3138void 4345void
3139ev_stat_start (EV_P_ ev_stat *w) 4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3140{ 4347{
3141 if (expect_false (ev_is_active (w))) 4348 if (expect_false (ev_is_active (w)))
3142 return; 4349 return;
3143 4350
3144 ev_stat_stat (EV_A_ w); 4351 ev_stat_stat (EV_A_ w);
… …
3165 4372
3166 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3167} 4374}
3168 4375
3169void 4376void
3170ev_stat_stop (EV_P_ ev_stat *w) 4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3171{ 4378{
3172 clear_pending (EV_A_ (W)w); 4379 clear_pending (EV_A_ (W)w);
3173 if (expect_false (!ev_is_active (w))) 4380 if (expect_false (!ev_is_active (w)))
3174 return; 4381 return;
3175 4382
… …
3191} 4398}
3192#endif 4399#endif
3193 4400
3194#if EV_IDLE_ENABLE 4401#if EV_IDLE_ENABLE
3195void 4402void
3196ev_idle_start (EV_P_ ev_idle *w) 4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3197{ 4404{
3198 if (expect_false (ev_is_active (w))) 4405 if (expect_false (ev_is_active (w)))
3199 return; 4406 return;
3200 4407
3201 pri_adjust (EV_A_ (W)w); 4408 pri_adjust (EV_A_ (W)w);
… …
3214 4421
3215 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3216} 4423}
3217 4424
3218void 4425void
3219ev_idle_stop (EV_P_ ev_idle *w) 4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3220{ 4427{
3221 clear_pending (EV_A_ (W)w); 4428 clear_pending (EV_A_ (W)w);
3222 if (expect_false (!ev_is_active (w))) 4429 if (expect_false (!ev_is_active (w)))
3223 return; 4430 return;
3224 4431
… …
3236 4443
3237 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3238} 4445}
3239#endif 4446#endif
3240 4447
4448#if EV_PREPARE_ENABLE
3241void 4449void
3242ev_prepare_start (EV_P_ ev_prepare *w) 4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3243{ 4451{
3244 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3245 return; 4453 return;
3246 4454
3247 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
… …
3252 4460
3253 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3254} 4462}
3255 4463
3256void 4464void
3257ev_prepare_stop (EV_P_ ev_prepare *w) 4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3258{ 4466{
3259 clear_pending (EV_A_ (W)w); 4467 clear_pending (EV_A_ (W)w);
3260 if (expect_false (!ev_is_active (w))) 4468 if (expect_false (!ev_is_active (w)))
3261 return; 4469 return;
3262 4470
… …
3271 4479
3272 ev_stop (EV_A_ (W)w); 4480 ev_stop (EV_A_ (W)w);
3273 4481
3274 EV_FREQUENT_CHECK; 4482 EV_FREQUENT_CHECK;
3275} 4483}
4484#endif
3276 4485
4486#if EV_CHECK_ENABLE
3277void 4487void
3278ev_check_start (EV_P_ ev_check *w) 4488ev_check_start (EV_P_ ev_check *w) EV_THROW
3279{ 4489{
3280 if (expect_false (ev_is_active (w))) 4490 if (expect_false (ev_is_active (w)))
3281 return; 4491 return;
3282 4492
3283 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
… …
3288 4498
3289 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3290} 4500}
3291 4501
3292void 4502void
3293ev_check_stop (EV_P_ ev_check *w) 4503ev_check_stop (EV_P_ ev_check *w) EV_THROW
3294{ 4504{
3295 clear_pending (EV_A_ (W)w); 4505 clear_pending (EV_A_ (W)w);
3296 if (expect_false (!ev_is_active (w))) 4506 if (expect_false (!ev_is_active (w)))
3297 return; 4507 return;
3298 4508
… …
3307 4517
3308 ev_stop (EV_A_ (W)w); 4518 ev_stop (EV_A_ (W)w);
3309 4519
3310 EV_FREQUENT_CHECK; 4520 EV_FREQUENT_CHECK;
3311} 4521}
4522#endif
3312 4523
3313#if EV_EMBED_ENABLE 4524#if EV_EMBED_ENABLE
3314void noinline 4525void noinline
3315ev_embed_sweep (EV_P_ ev_embed *w) 4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3316{ 4527{
3317 ev_loop (w->other, EVLOOP_NONBLOCK); 4528 ev_run (w->other, EVRUN_NOWAIT);
3318} 4529}
3319 4530
3320static void 4531static void
3321embed_io_cb (EV_P_ ev_io *io, int revents) 4532embed_io_cb (EV_P_ ev_io *io, int revents)
3322{ 4533{
3323 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4534 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3324 4535
3325 if (ev_cb (w)) 4536 if (ev_cb (w))
3326 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4537 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3327 else 4538 else
3328 ev_loop (w->other, EVLOOP_NONBLOCK); 4539 ev_run (w->other, EVRUN_NOWAIT);
3329} 4540}
3330 4541
3331static void 4542static void
3332embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4543embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3333{ 4544{
… …
3337 EV_P = w->other; 4548 EV_P = w->other;
3338 4549
3339 while (fdchangecnt) 4550 while (fdchangecnt)
3340 { 4551 {
3341 fd_reify (EV_A); 4552 fd_reify (EV_A);
3342 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4553 ev_run (EV_A_ EVRUN_NOWAIT);
3343 } 4554 }
3344 } 4555 }
3345} 4556}
3346 4557
3347static void 4558static void
… …
3353 4564
3354 { 4565 {
3355 EV_P = w->other; 4566 EV_P = w->other;
3356 4567
3357 ev_loop_fork (EV_A); 4568 ev_loop_fork (EV_A);
3358 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4569 ev_run (EV_A_ EVRUN_NOWAIT);
3359 } 4570 }
3360 4571
3361 ev_embed_start (EV_A_ w); 4572 ev_embed_start (EV_A_ w);
3362} 4573}
3363 4574
… …
3368 ev_idle_stop (EV_A_ idle); 4579 ev_idle_stop (EV_A_ idle);
3369} 4580}
3370#endif 4581#endif
3371 4582
3372void 4583void
3373ev_embed_start (EV_P_ ev_embed *w) 4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3374{ 4585{
3375 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3376 return; 4587 return;
3377 4588
3378 { 4589 {
… …
3399 4610
3400 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
3401} 4612}
3402 4613
3403void 4614void
3404ev_embed_stop (EV_P_ ev_embed *w) 4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3405{ 4616{
3406 clear_pending (EV_A_ (W)w); 4617 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4618 if (expect_false (!ev_is_active (w)))
3408 return; 4619 return;
3409 4620
… …
3411 4622
3412 ev_io_stop (EV_A_ &w->io); 4623 ev_io_stop (EV_A_ &w->io);
3413 ev_prepare_stop (EV_A_ &w->prepare); 4624 ev_prepare_stop (EV_A_ &w->prepare);
3414 ev_fork_stop (EV_A_ &w->fork); 4625 ev_fork_stop (EV_A_ &w->fork);
3415 4626
4627 ev_stop (EV_A_ (W)w);
4628
3416 EV_FREQUENT_CHECK; 4629 EV_FREQUENT_CHECK;
3417} 4630}
3418#endif 4631#endif
3419 4632
3420#if EV_FORK_ENABLE 4633#if EV_FORK_ENABLE
3421void 4634void
3422ev_fork_start (EV_P_ ev_fork *w) 4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3423{ 4636{
3424 if (expect_false (ev_is_active (w))) 4637 if (expect_false (ev_is_active (w)))
3425 return; 4638 return;
3426 4639
3427 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
… …
3432 4645
3433 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3434} 4647}
3435 4648
3436void 4649void
3437ev_fork_stop (EV_P_ ev_fork *w) 4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3438{ 4651{
3439 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3440 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3441 return; 4654 return;
3442 4655
… …
3453 4666
3454 EV_FREQUENT_CHECK; 4667 EV_FREQUENT_CHECK;
3455} 4668}
3456#endif 4669#endif
3457 4670
4671#if EV_CLEANUP_ENABLE
4672void
4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4674{
4675 if (expect_false (ev_is_active (w)))
4676 return;
4677
4678 EV_FREQUENT_CHECK;
4679
4680 ev_start (EV_A_ (W)w, ++cleanupcnt);
4681 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4682 cleanups [cleanupcnt - 1] = w;
4683
4684 /* cleanup watchers should never keep a refcount on the loop */
4685 ev_unref (EV_A);
4686 EV_FREQUENT_CHECK;
4687}
4688
4689void
4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4691{
4692 clear_pending (EV_A_ (W)w);
4693 if (expect_false (!ev_is_active (w)))
4694 return;
4695
4696 EV_FREQUENT_CHECK;
4697 ev_ref (EV_A);
4698
4699 {
4700 int active = ev_active (w);
4701
4702 cleanups [active - 1] = cleanups [--cleanupcnt];
4703 ev_active (cleanups [active - 1]) = active;
4704 }
4705
4706 ev_stop (EV_A_ (W)w);
4707
4708 EV_FREQUENT_CHECK;
4709}
4710#endif
4711
3458#if EV_ASYNC_ENABLE 4712#if EV_ASYNC_ENABLE
3459void 4713void
3460ev_async_start (EV_P_ ev_async *w) 4714ev_async_start (EV_P_ ev_async *w) EV_THROW
3461{ 4715{
3462 if (expect_false (ev_is_active (w))) 4716 if (expect_false (ev_is_active (w)))
3463 return; 4717 return;
4718
4719 w->sent = 0;
3464 4720
3465 evpipe_init (EV_A); 4721 evpipe_init (EV_A);
3466 4722
3467 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3468 4724
… …
3472 4728
3473 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3474} 4730}
3475 4731
3476void 4732void
3477ev_async_stop (EV_P_ ev_async *w) 4733ev_async_stop (EV_P_ ev_async *w) EV_THROW
3478{ 4734{
3479 clear_pending (EV_A_ (W)w); 4735 clear_pending (EV_A_ (W)w);
3480 if (expect_false (!ev_is_active (w))) 4736 if (expect_false (!ev_is_active (w)))
3481 return; 4737 return;
3482 4738
… …
3493 4749
3494 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3495} 4751}
3496 4752
3497void 4753void
3498ev_async_send (EV_P_ ev_async *w) 4754ev_async_send (EV_P_ ev_async *w) EV_THROW
3499{ 4755{
3500 w->sent = 1; 4756 w->sent = 1;
3501 evpipe_write (EV_A_ &async_pending); 4757 evpipe_write (EV_A_ &async_pending);
3502} 4758}
3503#endif 4759#endif
… …
3540 4796
3541 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3542} 4798}
3543 4799
3544void 4800void
3545ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3546{ 4802{
3547 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3548 4804
3549 if (expect_false (!once)) 4805 if (expect_false (!once))
3550 { 4806 {
3551 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4807 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3552 return; 4808 return;
3553 } 4809 }
3554 4810
3555 once->cb = cb; 4811 once->cb = cb;
3556 once->arg = arg; 4812 once->arg = arg;
… …
3571} 4827}
3572 4828
3573/*****************************************************************************/ 4829/*****************************************************************************/
3574 4830
3575#if EV_WALK_ENABLE 4831#if EV_WALK_ENABLE
3576void 4832void ecb_cold
3577ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3578{ 4834{
3579 int i, j; 4835 int i, j;
3580 ev_watcher_list *wl, *wn; 4836 ev_watcher_list *wl, *wn;
3581 4837
3582 if (types & (EV_IO | EV_EMBED)) 4838 if (types & (EV_IO | EV_EMBED))
… …
3625 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4881 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3626#endif 4882#endif
3627 4883
3628#if EV_IDLE_ENABLE 4884#if EV_IDLE_ENABLE
3629 if (types & EV_IDLE) 4885 if (types & EV_IDLE)
3630 for (j = NUMPRI; i--; ) 4886 for (j = NUMPRI; j--; )
3631 for (i = idlecnt [j]; i--; ) 4887 for (i = idlecnt [j]; i--; )
3632 cb (EV_A_ EV_IDLE, idles [j][i]); 4888 cb (EV_A_ EV_IDLE, idles [j][i]);
3633#endif 4889#endif
3634 4890
3635#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
… …
3643 if (types & EV_ASYNC) 4899 if (types & EV_ASYNC)
3644 for (i = asynccnt; i--; ) 4900 for (i = asynccnt; i--; )
3645 cb (EV_A_ EV_ASYNC, asyncs [i]); 4901 cb (EV_A_ EV_ASYNC, asyncs [i]);
3646#endif 4902#endif
3647 4903
4904#if EV_PREPARE_ENABLE
3648 if (types & EV_PREPARE) 4905 if (types & EV_PREPARE)
3649 for (i = preparecnt; i--; ) 4906 for (i = preparecnt; i--; )
3650#if EV_EMBED_ENABLE 4907# if EV_EMBED_ENABLE
3651 if (ev_cb (prepares [i]) != embed_prepare_cb) 4908 if (ev_cb (prepares [i]) != embed_prepare_cb)
3652#endif 4909# endif
3653 cb (EV_A_ EV_PREPARE, prepares [i]); 4910 cb (EV_A_ EV_PREPARE, prepares [i]);
4911#endif
3654 4912
4913#if EV_CHECK_ENABLE
3655 if (types & EV_CHECK) 4914 if (types & EV_CHECK)
3656 for (i = checkcnt; i--; ) 4915 for (i = checkcnt; i--; )
3657 cb (EV_A_ EV_CHECK, checks [i]); 4916 cb (EV_A_ EV_CHECK, checks [i]);
4917#endif
3658 4918
4919#if EV_SIGNAL_ENABLE
3659 if (types & EV_SIGNAL) 4920 if (types & EV_SIGNAL)
3660 for (i = 0; i < EV_NSIG - 1; ++i) 4921 for (i = 0; i < EV_NSIG - 1; ++i)
3661 for (wl = signals [i].head; wl; ) 4922 for (wl = signals [i].head; wl; )
3662 { 4923 {
3663 wn = wl->next; 4924 wn = wl->next;
3664 cb (EV_A_ EV_SIGNAL, wl); 4925 cb (EV_A_ EV_SIGNAL, wl);
3665 wl = wn; 4926 wl = wn;
3666 } 4927 }
4928#endif
3667 4929
4930#if EV_CHILD_ENABLE
3668 if (types & EV_CHILD) 4931 if (types & EV_CHILD)
3669 for (i = EV_PID_HASHSIZE; i--; ) 4932 for (i = (EV_PID_HASHSIZE); i--; )
3670 for (wl = childs [i]; wl; ) 4933 for (wl = childs [i]; wl; )
3671 { 4934 {
3672 wn = wl->next; 4935 wn = wl->next;
3673 cb (EV_A_ EV_CHILD, wl); 4936 cb (EV_A_ EV_CHILD, wl);
3674 wl = wn; 4937 wl = wn;
3675 } 4938 }
4939#endif
3676/* EV_STAT 0x00001000 /* stat data changed */ 4940/* EV_STAT 0x00001000 /* stat data changed */
3677/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4941/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3678} 4942}
3679#endif 4943#endif
3680 4944
3681#if EV_MULTIPLICITY 4945#if EV_MULTIPLICITY
3682 #include "ev_wrap.h" 4946 #include "ev_wrap.h"
3683#endif 4947#endif
3684 4948
3685#ifdef __cplusplus
3686}
3687#endif
3688

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