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Comparing libev/ev.c (file contents):
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC vs.
Revision 1.467 by root, Fri May 16 15:15:39 2014 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"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
188 221
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 225#if defined EV_NSIG
193/* use what's provided */ 226/* use what's provided */
194#elif defined (NSIG) 227#elif defined NSIG
195# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 229#elif defined _NSIG
197# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 231#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 233#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 237#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 239#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 243#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 245#else
213# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 247#endif
215# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
216#endif 251#endif
217 252
218#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 256# else
222# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
223# endif 258# endif
224#endif 259#endif
225 260
226#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 264# else
230# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
231# endif 266# endif
232#endif 267#endif
233 268
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 271#endif
237 272
238#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 276# else
242# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
243# endif 278# endif
244#endif 279#endif
245 280
246#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 283#endif
249 284
250#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
251# ifdef _WIN32 286# ifdef _WIN32
252# define EV_USE_POLL 0 287# define EV_USE_POLL 0
253# else 288# else
254# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 290# endif
256#endif 291#endif
257 292
258#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 296# else
262# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
263# endif 298# endif
264#endif 299#endif
265 300
… …
271# define EV_USE_PORT 0 306# define EV_USE_PORT 0
272#endif 307#endif
273 308
274#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 312# else
278# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
279# endif 314# endif
280#endif 315#endif
281 316
282#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 318# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 319#endif
289 320
290#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 322# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 323#endif
297 324
298#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 328# else
302# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
303# endif 330# endif
304#endif 331#endif
305 332
306#ifndef EV_USE_SIGNALFD 333#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 335# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 336# else
310# define EV_USE_SIGNALFD 0 337# define EV_USE_SIGNALFD 0
311# endif 338# endif
312#endif 339#endif
313 340
… …
316# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
318#endif 345#endif
319 346
320#ifndef EV_VERIFY 347#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 349#endif
323 350
324#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 353#endif
327 354
328#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif
358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
330#endif 373#endif
331 374
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 378# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
340# else 383# else
… …
359# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
361#endif 404#endif
362 405
363#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 409# include <sys/select.h>
366# endif 410# endif
367#endif 411#endif
368 412
369#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 414# include <sys/statfs.h>
372# include <sys/inotify.h> 415# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
377# endif 420# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 421#endif
383 422
384#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 425# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
393# else 432# else
394# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
395# endif 434# endif
396# endif 435# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 437#endif
405 438
406#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 441# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
415# else 448# else
416# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
417# endif 450# endif
418# endif 451# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 453
424struct signalfd_siginfo 454struct signalfd_siginfo
425{ 455{
426 uint32_t ssi_signo; 456 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
428}; 458};
429# ifdef __cplusplus
430}
431# endif 459#endif
432#endif
433
434 460
435/**/ 461/**/
436 462
437#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 465#else
440# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
441#endif 467#endif
442 468
443/* 469/*
444 * This is used to avoid floating point rounding problems. 470 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 471 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 472 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 475
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
522 */
523
524#ifndef ECB_H
525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
529
530#ifdef _WIN32
531 typedef signed char int8_t;
532 typedef unsigned char uint8_t;
533 typedef signed short int16_t;
534 typedef unsigned short uint16_t;
535 typedef signed int int32_t;
536 typedef unsigned int uint32_t;
456#if __GNUC__ >= 4 537 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
458# define noinline __attribute__ ((noinline)) 539 typedef unsigned long long uint64_t;
540 #else /* _MSC_VER || __BORLANDC__ */
541 typedef signed __int64 int64_t;
542 typedef unsigned __int64 uint64_t;
543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
459#else 553#else
460# define expect(expr,value) (expr) 554 #include <inttypes.h>
461# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
463# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
464# endif 560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
465#endif 568 #endif
569#endif
466 570
571/* many compilers define _GNUC_ to some versions but then only implement
572 * what their idiot authors think are the "more important" extensions,
573 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so.
575 * we try to detect these and simply assume they are not gcc - if they have
576 * an issue with that they should have done it right in the first place.
577 */
578#ifndef ECB_GCC_VERSION
579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
580 #define ECB_GCC_VERSION(major,minor) 0
581 #else
582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
583 #endif
584#endif
585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
610/*****************************************************************************/
611
612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
614
615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
620 #define ECB_MEMORY_FENCE do { } while (0)
621#endif
622
623#ifndef ECB_MEMORY_FENCE
624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
625 #if __i386 || __i386__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #endif
667 #endif
668#endif
669
670#ifndef ECB_MEMORY_FENCE
671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
701 #elif defined _WIN32
702 #include <WinNT.h>
703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
711 #endif
712#endif
713
714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
728 #endif
729#endif
730
731#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS
733 /*
734 * if you get undefined symbol references to pthread_mutex_lock,
735 * or failure to find pthread.h, then you should implement
736 * the ECB_MEMORY_FENCE operations for your cpu/compiler
737 * OR provide pthread.h and link against the posix thread library
738 * of your system.
739 */
740 #include <pthread.h>
741 #define ECB_NEEDS_PTHREADS 1
742 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
743
744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
746 #endif
747#endif
748
749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
751#endif
752
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif
756
757/*****************************************************************************/
758
759#if __cplusplus
760 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__
763#elif ECB_C99
764 #define ecb_inline static inline
765#else
766 #define ecb_inline static
767#endif
768
769#if ECB_GCC_VERSION(3,3)
770 #define ecb_restrict __restrict__
771#elif ECB_C99
772 #define ecb_restrict restrict
773#else
774 #define ecb_restrict
775#endif
776
777typedef int ecb_bool;
778
779#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a
782#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
783
784#define ecb_function_ ecb_inline
785
786#if ECB_GCC_VERSION(3,1)
787 #define ecb_attribute(attrlist) __attribute__(attrlist)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else
792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
798 #define ecb_is_constant(expr) 0
799 #define ecb_expect(expr,value) (expr)
800 #define ecb_prefetch(addr,rw,locality)
801#endif
802
803/* no emulation for ecb_decltype */
804#if ECB_GCC_VERSION(4,5)
805 #define ecb_decltype(x) __decltype(x)
806#elif ECB_GCC_VERSION(3,0)
807 #define ecb_decltype(x) __typeof(x)
808#endif
809
810#define ecb_noinline ecb_attribute ((__noinline__))
811#define ecb_unused ecb_attribute ((__unused__))
812#define ecb_const ecb_attribute ((__const__))
813#define ecb_pure ecb_attribute ((__pure__))
814
815#if ECB_C11
816 #define ecb_noreturn _Noreturn
817#else
818 #define ecb_noreturn ecb_attribute ((__noreturn__))
819#endif
820
821#if ECB_GCC_VERSION(4,3)
822 #define ecb_artificial ecb_attribute ((__artificial__))
823 #define ecb_hot ecb_attribute ((__hot__))
824 #define ecb_cold ecb_attribute ((__cold__))
825#else
826 #define ecb_artificial
827 #define ecb_hot
828 #define ecb_cold
829#endif
830
831/* put around conditional expressions if you are very sure that the */
832/* expression is mostly true or mostly false. note that these return */
833/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 834#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 835#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
836/* for compatibility to the rest of the world */
837#define ecb_likely(expr) ecb_expect_true (expr)
838#define ecb_unlikely(expr) ecb_expect_false (expr)
839
840/* count trailing zero bits and count # of one bits */
841#if ECB_GCC_VERSION(3,4)
842 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
843 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
844 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
845 #define ecb_ctz32(x) __builtin_ctz (x)
846 #define ecb_ctz64(x) __builtin_ctzll (x)
847 #define ecb_popcount32(x) __builtin_popcount (x)
848 /* no popcountll */
849#else
850 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
851 ecb_function_ int
852 ecb_ctz32 (uint32_t x)
853 {
854 int r = 0;
855
856 x &= ~x + 1; /* this isolates the lowest bit */
857
858#if ECB_branchless_on_i386
859 r += !!(x & 0xaaaaaaaa) << 0;
860 r += !!(x & 0xcccccccc) << 1;
861 r += !!(x & 0xf0f0f0f0) << 2;
862 r += !!(x & 0xff00ff00) << 3;
863 r += !!(x & 0xffff0000) << 4;
864#else
865 if (x & 0xaaaaaaaa) r += 1;
866 if (x & 0xcccccccc) r += 2;
867 if (x & 0xf0f0f0f0) r += 4;
868 if (x & 0xff00ff00) r += 8;
869 if (x & 0xffff0000) r += 16;
870#endif
871
872 return r;
873 }
874
875 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
876 ecb_function_ int
877 ecb_ctz64 (uint64_t x)
878 {
879 int shift = x & 0xffffffffU ? 0 : 32;
880 return ecb_ctz32 (x >> shift) + shift;
881 }
882
883 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
884 ecb_function_ int
885 ecb_popcount32 (uint32_t x)
886 {
887 x -= (x >> 1) & 0x55555555;
888 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
889 x = ((x >> 4) + x) & 0x0f0f0f0f;
890 x *= 0x01010101;
891
892 return x >> 24;
893 }
894
895 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
896 ecb_function_ int ecb_ld32 (uint32_t x)
897 {
898 int r = 0;
899
900 if (x >> 16) { x >>= 16; r += 16; }
901 if (x >> 8) { x >>= 8; r += 8; }
902 if (x >> 4) { x >>= 4; r += 4; }
903 if (x >> 2) { x >>= 2; r += 2; }
904 if (x >> 1) { r += 1; }
905
906 return r;
907 }
908
909 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
910 ecb_function_ int ecb_ld64 (uint64_t x)
911 {
912 int r = 0;
913
914 if (x >> 32) { x >>= 32; r += 32; }
915
916 return r + ecb_ld32 (x);
917 }
918#endif
919
920ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
921ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
922ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
923ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
924
925ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
926ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
927{
928 return ( (x * 0x0802U & 0x22110U)
929 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
930}
931
932ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
933ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
934{
935 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
936 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
937 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
938 x = ( x >> 8 ) | ( x << 8);
939
940 return x;
941}
942
943ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
944ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
945{
946 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
947 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
948 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
949 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
950 x = ( x >> 16 ) | ( x << 16);
951
952 return x;
953}
954
955/* popcount64 is only available on 64 bit cpus as gcc builtin */
956/* so for this version we are lazy */
957ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
958ecb_function_ int
959ecb_popcount64 (uint64_t x)
960{
961 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
962}
963
964ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
965ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
966ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
967ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
968ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
969ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
970ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
971ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
972
973ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
974ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
975ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
976ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
977ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
978ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
979ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
980ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
981
982#if ECB_GCC_VERSION(4,3)
983 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
984 #define ecb_bswap32(x) __builtin_bswap32 (x)
985 #define ecb_bswap64(x) __builtin_bswap64 (x)
986#else
987 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
988 ecb_function_ uint16_t
989 ecb_bswap16 (uint16_t x)
990 {
991 return ecb_rotl16 (x, 8);
992 }
993
994 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
995 ecb_function_ uint32_t
996 ecb_bswap32 (uint32_t x)
997 {
998 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
999 }
1000
1001 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1002 ecb_function_ uint64_t
1003 ecb_bswap64 (uint64_t x)
1004 {
1005 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1006 }
1007#endif
1008
1009#if ECB_GCC_VERSION(4,5)
1010 #define ecb_unreachable() __builtin_unreachable ()
1011#else
1012 /* this seems to work fine, but gcc always emits a warning for it :/ */
1013 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1014 ecb_inline void ecb_unreachable (void) { }
1015#endif
1016
1017/* try to tell the compiler that some condition is definitely true */
1018#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1019
1020ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1021ecb_inline unsigned char
1022ecb_byteorder_helper (void)
1023{
1024 /* the union code still generates code under pressure in gcc, */
1025 /* but less than using pointers, and always seems to */
1026 /* successfully return a constant. */
1027 /* the reason why we have this horrible preprocessor mess */
1028 /* is to avoid it in all cases, at least on common architectures */
1029 /* or when using a recent enough gcc version (>= 4.6) */
1030#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1031 return 0x44;
1032#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1033 return 0x44;
1034#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1035 return 0x11;
1036#else
1037 union
1038 {
1039 uint32_t i;
1040 uint8_t c;
1041 } u = { 0x11223344 };
1042 return u.c;
1043#endif
1044}
1045
1046ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1047ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1048ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1049ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1050
1051#if ECB_GCC_VERSION(3,0) || ECB_C99
1052 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1053#else
1054 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1055#endif
1056
1057#if __cplusplus
1058 template<typename T>
1059 static inline T ecb_div_rd (T val, T div)
1060 {
1061 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1062 }
1063 template<typename T>
1064 static inline T ecb_div_ru (T val, T div)
1065 {
1066 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1067 }
1068#else
1069 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1070 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1071#endif
1072
1073#if ecb_cplusplus_does_not_suck
1074 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1075 template<typename T, int N>
1076 static inline int ecb_array_length (const T (&arr)[N])
1077 {
1078 return N;
1079 }
1080#else
1081 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1082#endif
1083
1084/*******************************************************************************/
1085/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1086
1087/* basically, everything uses "ieee pure-endian" floating point numbers */
1088/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1089#if 0 \
1090 || __i386 || __i386__ \
1091 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1092 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1093 || defined __s390__ || defined __s390x__ \
1094 || defined __mips__ \
1095 || defined __alpha__ \
1096 || defined __hppa__ \
1097 || defined __ia64__ \
1098 || defined __m68k__ \
1099 || defined __m88k__ \
1100 || defined __sh__ \
1101 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1102 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1103 || defined __aarch64__
1104 #define ECB_STDFP 1
1105 #include <string.h> /* for memcpy */
1106#else
1107 #define ECB_STDFP 0
1108#endif
1109
1110#ifndef ECB_NO_LIBM
1111
1112 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1113
1114 /* only the oldest of old doesn't have this one. solaris. */
1115 #ifdef INFINITY
1116 #define ECB_INFINITY INFINITY
1117 #else
1118 #define ECB_INFINITY HUGE_VAL
1119 #endif
1120
1121 #ifdef NAN
1122 #define ECB_NAN NAN
1123 #else
1124 #define ECB_NAN ECB_INFINITY
1125 #endif
1126
1127 /* converts an ieee half/binary16 to a float */
1128 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1129 ecb_function_ float
1130 ecb_binary16_to_float (uint16_t x)
1131 {
1132 int e = (x >> 10) & 0x1f;
1133 int m = x & 0x3ff;
1134 float r;
1135
1136 if (!e ) r = ldexpf (m , -24);
1137 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1138 else if (m ) r = ECB_NAN;
1139 else r = ECB_INFINITY;
1140
1141 return x & 0x8000 ? -r : r;
1142 }
1143
1144 /* convert a float to ieee single/binary32 */
1145 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1146 ecb_function_ uint32_t
1147 ecb_float_to_binary32 (float x)
1148 {
1149 uint32_t r;
1150
1151 #if ECB_STDFP
1152 memcpy (&r, &x, 4);
1153 #else
1154 /* slow emulation, works for anything but -0 */
1155 uint32_t m;
1156 int e;
1157
1158 if (x == 0e0f ) return 0x00000000U;
1159 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1160 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1161 if (x != x ) return 0x7fbfffffU;
1162
1163 m = frexpf (x, &e) * 0x1000000U;
1164
1165 r = m & 0x80000000U;
1166
1167 if (r)
1168 m = -m;
1169
1170 if (e <= -126)
1171 {
1172 m &= 0xffffffU;
1173 m >>= (-125 - e);
1174 e = -126;
1175 }
1176
1177 r |= (e + 126) << 23;
1178 r |= m & 0x7fffffU;
1179 #endif
1180
1181 return r;
1182 }
1183
1184 /* converts an ieee single/binary32 to a float */
1185 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1186 ecb_function_ float
1187 ecb_binary32_to_float (uint32_t x)
1188 {
1189 float r;
1190
1191 #if ECB_STDFP
1192 memcpy (&r, &x, 4);
1193 #else
1194 /* emulation, only works for normals and subnormals and +0 */
1195 int neg = x >> 31;
1196 int e = (x >> 23) & 0xffU;
1197
1198 x &= 0x7fffffU;
1199
1200 if (e)
1201 x |= 0x800000U;
1202 else
1203 e = 1;
1204
1205 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1206 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1207
1208 r = neg ? -r : r;
1209 #endif
1210
1211 return r;
1212 }
1213
1214 /* convert a double to ieee double/binary64 */
1215 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1216 ecb_function_ uint64_t
1217 ecb_double_to_binary64 (double x)
1218 {
1219 uint64_t r;
1220
1221 #if ECB_STDFP
1222 memcpy (&r, &x, 8);
1223 #else
1224 /* slow emulation, works for anything but -0 */
1225 uint64_t m;
1226 int e;
1227
1228 if (x == 0e0 ) return 0x0000000000000000U;
1229 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1230 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1231 if (x != x ) return 0X7ff7ffffffffffffU;
1232
1233 m = frexp (x, &e) * 0x20000000000000U;
1234
1235 r = m & 0x8000000000000000;;
1236
1237 if (r)
1238 m = -m;
1239
1240 if (e <= -1022)
1241 {
1242 m &= 0x1fffffffffffffU;
1243 m >>= (-1021 - e);
1244 e = -1022;
1245 }
1246
1247 r |= ((uint64_t)(e + 1022)) << 52;
1248 r |= m & 0xfffffffffffffU;
1249 #endif
1250
1251 return r;
1252 }
1253
1254 /* converts an ieee double/binary64 to a double */
1255 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1256 ecb_function_ double
1257 ecb_binary64_to_double (uint64_t x)
1258 {
1259 double r;
1260
1261 #if ECB_STDFP
1262 memcpy (&r, &x, 8);
1263 #else
1264 /* emulation, only works for normals and subnormals and +0 */
1265 int neg = x >> 63;
1266 int e = (x >> 52) & 0x7ffU;
1267
1268 x &= 0xfffffffffffffU;
1269
1270 if (e)
1271 x |= 0x10000000000000U;
1272 else
1273 e = 1;
1274
1275 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1276 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1277
1278 r = neg ? -r : r;
1279 #endif
1280
1281 return r;
1282 }
1283
1284#endif
1285
1286#endif
1287
1288/* ECB.H END */
1289
1290#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1291/* if your architecture doesn't need memory fences, e.g. because it is
1292 * single-cpu/core, or if you use libev in a project that doesn't use libev
1293 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1294 * libev, in which cases the memory fences become nops.
1295 * alternatively, you can remove this #error and link against libpthread,
1296 * which will then provide the memory fences.
1297 */
1298# error "memory fences not defined for your architecture, please report"
1299#endif
1300
1301#ifndef ECB_MEMORY_FENCE
1302# define ECB_MEMORY_FENCE do { } while (0)
1303# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1304# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1305#endif
1306
1307#define expect_false(cond) ecb_expect_false (cond)
1308#define expect_true(cond) ecb_expect_true (cond)
1309#define noinline ecb_noinline
1310
469#define inline_size static inline 1311#define inline_size ecb_inline
470 1312
471#if EV_MINIMAL 1313#if EV_FEATURE_CODE
1314# define inline_speed ecb_inline
1315#else
472# define inline_speed static noinline 1316# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 1317#endif
476 1318
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1319#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1320
479#if EV_MINPRI == EV_MAXPRI 1321#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 1334#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1335#define ev_at(w) ((WT)(w))->at
494 1336
495#if EV_USE_REALTIME 1337#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1338/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 1339/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1340static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1341#endif
500 1342
501#if EV_USE_MONOTONIC 1343#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1346
505#ifndef EV_FD_TO_WIN32_HANDLE 1347#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1348# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1349#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1350#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1351# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1352#endif
511#ifndef EV_WIN32_CLOSE_FD 1353#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1354# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1355#endif
514 1356
… …
516# include "ev_win32.c" 1358# include "ev_win32.c"
517#endif 1359#endif
518 1360
519/*****************************************************************************/ 1361/*****************************************************************************/
520 1362
1363/* define a suitable floor function (only used by periodics atm) */
1364
1365#if EV_USE_FLOOR
1366# include <math.h>
1367# define ev_floor(v) floor (v)
1368#else
1369
1370#include <float.h>
1371
1372/* a floor() replacement function, should be independent of ev_tstamp type */
1373static ev_tstamp noinline
1374ev_floor (ev_tstamp v)
1375{
1376 /* the choice of shift factor is not terribly important */
1377#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1378 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1379#else
1380 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1381#endif
1382
1383 /* argument too large for an unsigned long? */
1384 if (expect_false (v >= shift))
1385 {
1386 ev_tstamp f;
1387
1388 if (v == v - 1.)
1389 return v; /* very large number */
1390
1391 f = shift * ev_floor (v * (1. / shift));
1392 return f + ev_floor (v - f);
1393 }
1394
1395 /* special treatment for negative args? */
1396 if (expect_false (v < 0.))
1397 {
1398 ev_tstamp f = -ev_floor (-v);
1399
1400 return f - (f == v ? 0 : 1);
1401 }
1402
1403 /* fits into an unsigned long */
1404 return (unsigned long)v;
1405}
1406
1407#endif
1408
1409/*****************************************************************************/
1410
1411#ifdef __linux
1412# include <sys/utsname.h>
1413#endif
1414
1415static unsigned int noinline ecb_cold
1416ev_linux_version (void)
1417{
1418#ifdef __linux
1419 unsigned int v = 0;
1420 struct utsname buf;
1421 int i;
1422 char *p = buf.release;
1423
1424 if (uname (&buf))
1425 return 0;
1426
1427 for (i = 3+1; --i; )
1428 {
1429 unsigned int c = 0;
1430
1431 for (;;)
1432 {
1433 if (*p >= '0' && *p <= '9')
1434 c = c * 10 + *p++ - '0';
1435 else
1436 {
1437 p += *p == '.';
1438 break;
1439 }
1440 }
1441
1442 v = (v << 8) | c;
1443 }
1444
1445 return v;
1446#else
1447 return 0;
1448#endif
1449}
1450
1451/*****************************************************************************/
1452
1453#if EV_AVOID_STDIO
1454static void noinline ecb_cold
1455ev_printerr (const char *msg)
1456{
1457 write (STDERR_FILENO, msg, strlen (msg));
1458}
1459#endif
1460
521static void (*syserr_cb)(const char *msg); 1461static void (*syserr_cb)(const char *msg) EV_THROW;
522 1462
523void 1463void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1464ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
525{ 1465{
526 syserr_cb = cb; 1466 syserr_cb = cb;
527} 1467}
528 1468
529static void noinline 1469static void noinline ecb_cold
530ev_syserr (const char *msg) 1470ev_syserr (const char *msg)
531{ 1471{
532 if (!msg) 1472 if (!msg)
533 msg = "(libev) system error"; 1473 msg = "(libev) system error";
534 1474
535 if (syserr_cb) 1475 if (syserr_cb)
536 syserr_cb (msg); 1476 syserr_cb (msg);
537 else 1477 else
538 { 1478 {
1479#if EV_AVOID_STDIO
1480 ev_printerr (msg);
1481 ev_printerr (": ");
1482 ev_printerr (strerror (errno));
1483 ev_printerr ("\n");
1484#else
539 perror (msg); 1485 perror (msg);
1486#endif
540 abort (); 1487 abort ();
541 } 1488 }
542} 1489}
543 1490
544static void * 1491static void *
545ev_realloc_emul (void *ptr, long size) 1492ev_realloc_emul (void *ptr, long size) EV_THROW
546{ 1493{
547 /* some systems, notably openbsd and darwin, fail to properly 1494 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1495 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1496 * the single unix specification, so work around them here.
1497 * recently, also (at least) fedora and debian started breaking it,
1498 * despite documenting it otherwise.
550 */ 1499 */
551 1500
552 if (size) 1501 if (size)
553 return realloc (ptr, size); 1502 return realloc (ptr, size);
554 1503
555 free (ptr); 1504 free (ptr);
556 return 0; 1505 return 0;
557} 1506}
558 1507
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1508static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
560 1509
561void 1510void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1511ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
563{ 1512{
564 alloc = cb; 1513 alloc = cb;
565} 1514}
566 1515
567inline_speed void * 1516inline_speed void *
… …
569{ 1518{
570 ptr = alloc (ptr, size); 1519 ptr = alloc (ptr, size);
571 1520
572 if (!ptr && size) 1521 if (!ptr && size)
573 { 1522 {
1523#if EV_AVOID_STDIO
1524 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1525#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1526 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1527#endif
575 abort (); 1528 abort ();
576 } 1529 }
577 1530
578 return ptr; 1531 return ptr;
579} 1532}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1548 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1549 unsigned char unused;
597#if EV_USE_EPOLL 1550#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1551 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1552#endif
600#if EV_SELECT_IS_WINSOCKET 1553#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1554 SOCKET handle;
1555#endif
1556#if EV_USE_IOCP
1557 OVERLAPPED or, ow;
602#endif 1558#endif
603} ANFD; 1559} ANFD;
604 1560
605/* stores the pending event set for a given watcher */ 1561/* stores the pending event set for a given watcher */
606typedef struct 1562typedef struct
… …
648 #undef VAR 1604 #undef VAR
649 }; 1605 };
650 #include "ev_wrap.h" 1606 #include "ev_wrap.h"
651 1607
652 static struct ev_loop default_loop_struct; 1608 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1609 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1610
655#else 1611#else
656 1612
657 ev_tstamp ev_rt_now; 1613 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1614 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1615 #include "ev_vars.h"
660 #undef VAR 1616 #undef VAR
661 1617
662 static int ev_default_loop_ptr; 1618 static int ev_default_loop_ptr;
663 1619
664#endif 1620#endif
665 1621
666#if EV_MINIMAL < 2 1622#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1623# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1624# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1625# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1626#else
671# define EV_RELEASE_CB (void)0 1627# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1628# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1629# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1630#endif
675 1631
676#define EVUNLOOP_RECURSE 0x80 1632#define EVBREAK_RECURSE 0x80
677 1633
678/*****************************************************************************/ 1634/*****************************************************************************/
679 1635
680#ifndef EV_HAVE_EV_TIME 1636#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1637ev_tstamp
682ev_time (void) 1638ev_time (void) EV_THROW
683{ 1639{
684#if EV_USE_REALTIME 1640#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1641 if (expect_true (have_realtime))
686 { 1642 {
687 struct timespec ts; 1643 struct timespec ts;
… …
711 return ev_time (); 1667 return ev_time ();
712} 1668}
713 1669
714#if EV_MULTIPLICITY 1670#if EV_MULTIPLICITY
715ev_tstamp 1671ev_tstamp
716ev_now (EV_P) 1672ev_now (EV_P) EV_THROW
717{ 1673{
718 return ev_rt_now; 1674 return ev_rt_now;
719} 1675}
720#endif 1676#endif
721 1677
722void 1678void
723ev_sleep (ev_tstamp delay) 1679ev_sleep (ev_tstamp delay) EV_THROW
724{ 1680{
725 if (delay > 0.) 1681 if (delay > 0.)
726 { 1682 {
727#if EV_USE_NANOSLEEP 1683#if EV_USE_NANOSLEEP
728 struct timespec ts; 1684 struct timespec ts;
729 1685
730 ts.tv_sec = (time_t)delay; 1686 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1687 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1688#elif defined _WIN32
735 Sleep ((unsigned long)(delay * 1e3)); 1689 Sleep ((unsigned long)(delay * 1e3));
736#else 1690#else
737 struct timeval tv; 1691 struct timeval tv;
738 1692
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1693 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1694 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1695 /* by older ones */
1696 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1697 select (0, 0, 0, 0, &tv);
746#endif 1698#endif
747 } 1699 }
748} 1700}
749 1701
750/*****************************************************************************/ 1702/*****************************************************************************/
751 1703
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1704#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1705
754/* find a suitable new size for the given array, */ 1706/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1707/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1708inline_size int
757array_nextsize (int elem, int cur, int cnt) 1709array_nextsize (int elem, int cur, int cnt)
758{ 1710{
759 int ncur = cur + 1; 1711 int ncur = cur + 1;
760 1712
761 do 1713 do
762 ncur <<= 1; 1714 ncur <<= 1;
763 while (cnt > ncur); 1715 while (cnt > ncur);
764 1716
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1717 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1718 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1719 {
768 ncur *= elem; 1720 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1721 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1722 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1724 }
773 1725
774 return ncur; 1726 return ncur;
775} 1727}
776 1728
777static noinline void * 1729static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1730array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1731{
780 *cur = array_nextsize (elem, *cur, cnt); 1732 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1733 return ev_realloc (base, elem * *cur);
782} 1734}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1737 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1738
787#define array_needsize(type,base,cur,cnt,init) \ 1739#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1740 if (expect_false ((cnt) > (cur))) \
789 { \ 1741 { \
790 int ocur_ = (cur); \ 1742 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1743 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1744 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1745 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1746 }
795 1747
… …
813pendingcb (EV_P_ ev_prepare *w, int revents) 1765pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 1766{
815} 1767}
816 1768
817void noinline 1769void noinline
818ev_feed_event (EV_P_ void *w, int revents) 1770ev_feed_event (EV_P_ void *w, int revents) EV_THROW
819{ 1771{
820 W w_ = (W)w; 1772 W w_ = (W)w;
821 int pri = ABSPRI (w_); 1773 int pri = ABSPRI (w_);
822 1774
823 if (expect_false (w_->pending)) 1775 if (expect_false (w_->pending))
… …
827 w_->pending = ++pendingcnt [pri]; 1779 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1780 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
829 pendings [pri][w_->pending - 1].w = w_; 1781 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 1782 pendings [pri][w_->pending - 1].events = revents;
831 } 1783 }
1784
1785 pendingpri = NUMPRI - 1;
832} 1786}
833 1787
834inline_speed void 1788inline_speed void
835feed_reverse (EV_P_ W w) 1789feed_reverse (EV_P_ W w)
836{ 1790{
… …
856} 1810}
857 1811
858/*****************************************************************************/ 1812/*****************************************************************************/
859 1813
860inline_speed void 1814inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1815fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1816{
863 ANFD *anfd = anfds + fd; 1817 ANFD *anfd = anfds + fd;
864 ev_io *w; 1818 ev_io *w;
865 1819
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1820 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1832fd_event (EV_P_ int fd, int revents)
879{ 1833{
880 ANFD *anfd = anfds + fd; 1834 ANFD *anfd = anfds + fd;
881 1835
882 if (expect_true (!anfd->reify)) 1836 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1837 fd_event_nocheck (EV_A_ fd, revents);
884} 1838}
885 1839
886void 1840void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1841ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
888{ 1842{
889 if (fd >= 0 && fd < anfdmax) 1843 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
891} 1845}
892 1846
893/* make sure the external fd watch events are in-sync */ 1847/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1848/* with the kernel/libev internal state */
895inline_size void 1849inline_size void
896fd_reify (EV_P) 1850fd_reify (EV_P)
897{ 1851{
898 int i; 1852 int i;
899 1853
1854#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1855 for (i = 0; i < fdchangecnt; ++i)
1856 {
1857 int fd = fdchanges [i];
1858 ANFD *anfd = anfds + fd;
1859
1860 if (anfd->reify & EV__IOFDSET && anfd->head)
1861 {
1862 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1863
1864 if (handle != anfd->handle)
1865 {
1866 unsigned long arg;
1867
1868 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1869
1870 /* handle changed, but fd didn't - we need to do it in two steps */
1871 backend_modify (EV_A_ fd, anfd->events, 0);
1872 anfd->events = 0;
1873 anfd->handle = handle;
1874 }
1875 }
1876 }
1877#endif
1878
900 for (i = 0; i < fdchangecnt; ++i) 1879 for (i = 0; i < fdchangecnt; ++i)
901 { 1880 {
902 int fd = fdchanges [i]; 1881 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1882 ANFD *anfd = anfds + fd;
904 ev_io *w; 1883 ev_io *w;
905 1884
906 unsigned char events = 0; 1885 unsigned char o_events = anfd->events;
1886 unsigned char o_reify = anfd->reify;
907 1887
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1888 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1889
911#if EV_SELECT_IS_WINSOCKET 1890 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1891 {
914 unsigned long arg; 1892 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1893
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1895 anfd->events |= (unsigned char)w->events;
1896
1897 if (o_events != anfd->events)
1898 o_reify = EV__IOFDSET; /* actually |= */
917 } 1899 }
918#endif
919 1900
920 { 1901 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 1902 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1903 }
931 1904
932 fdchangecnt = 0; 1905 fdchangecnt = 0;
933} 1906}
934 1907
… …
946 fdchanges [fdchangecnt - 1] = fd; 1919 fdchanges [fdchangecnt - 1] = fd;
947 } 1920 }
948} 1921}
949 1922
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1923/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1924inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1925fd_kill (EV_P_ int fd)
953{ 1926{
954 ev_io *w; 1927 ev_io *w;
955 1928
956 while ((w = (ev_io *)anfds [fd].head)) 1929 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1931 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1932 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1933 }
961} 1934}
962 1935
963/* check whether the given fd is atcually valid, for error recovery */ 1936/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1937inline_size int ecb_cold
965fd_valid (int fd) 1938fd_valid (int fd)
966{ 1939{
967#ifdef _WIN32 1940#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1941 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1942#else
970 return fcntl (fd, F_GETFD) != -1; 1943 return fcntl (fd, F_GETFD) != -1;
971#endif 1944#endif
972} 1945}
973 1946
974/* called on EBADF to verify fds */ 1947/* called on EBADF to verify fds */
975static void noinline 1948static void noinline ecb_cold
976fd_ebadf (EV_P) 1949fd_ebadf (EV_P)
977{ 1950{
978 int fd; 1951 int fd;
979 1952
980 for (fd = 0; fd < anfdmax; ++fd) 1953 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1955 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1956 fd_kill (EV_A_ fd);
984} 1957}
985 1958
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1959/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1960static void noinline ecb_cold
988fd_enomem (EV_P) 1961fd_enomem (EV_P)
989{ 1962{
990 int fd; 1963 int fd;
991 1964
992 for (fd = anfdmax; fd--; ) 1965 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1983 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1984 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1985 }
1013} 1986}
1014 1987
1988/* used to prepare libev internal fd's */
1989/* this is not fork-safe */
1990inline_speed void
1991fd_intern (int fd)
1992{
1993#ifdef _WIN32
1994 unsigned long arg = 1;
1995 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1996#else
1997 fcntl (fd, F_SETFD, FD_CLOEXEC);
1998 fcntl (fd, F_SETFL, O_NONBLOCK);
1999#endif
2000}
2001
1015/*****************************************************************************/ 2002/*****************************************************************************/
1016 2003
1017/* 2004/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 2005 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2006 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 2007 * the branching factor of the d-tree.
1021 */ 2008 */
1022 2009
1023/* 2010/*
… …
1171 2158
1172static ANSIG signals [EV_NSIG - 1]; 2159static ANSIG signals [EV_NSIG - 1];
1173 2160
1174/*****************************************************************************/ 2161/*****************************************************************************/
1175 2162
1176/* used to prepare libev internal fd's */ 2163#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */ 2164
2165static void noinline ecb_cold
2166evpipe_init (EV_P)
2167{
2168 if (!ev_is_active (&pipe_w))
2169 {
2170 int fds [2];
2171
2172# if EV_USE_EVENTFD
2173 fds [0] = -1;
2174 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2175 if (fds [1] < 0 && errno == EINVAL)
2176 fds [1] = eventfd (0, 0);
2177
2178 if (fds [1] < 0)
2179# endif
2180 {
2181 while (pipe (fds))
2182 ev_syserr ("(libev) error creating signal/async pipe");
2183
2184 fd_intern (fds [0]);
2185 }
2186
2187 evpipe [0] = fds [0];
2188
2189 if (evpipe [1] < 0)
2190 evpipe [1] = fds [1]; /* first call, set write fd */
2191 else
2192 {
2193 /* on subsequent calls, do not change evpipe [1] */
2194 /* so that evpipe_write can always rely on its value. */
2195 /* this branch does not do anything sensible on windows, */
2196 /* so must not be executed on windows */
2197
2198 dup2 (fds [1], evpipe [1]);
2199 close (fds [1]);
2200 }
2201
2202 fd_intern (evpipe [1]);
2203
2204 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2205 ev_io_start (EV_A_ &pipe_w);
2206 ev_unref (EV_A); /* watcher should not keep loop alive */
2207 }
2208}
2209
1178inline_speed void 2210inline_speed void
1179fd_intern (int fd) 2211evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1180{ 2212{
1181#ifdef _WIN32 2213 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 2214
1190static void noinline 2215 if (expect_true (*flag))
1191evpipe_init (EV_P) 2216 return;
1192{ 2217
1193 if (!ev_is_active (&pipe_w)) 2218 *flag = 1;
2219 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2220
2221 pipe_write_skipped = 1;
2222
2223 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2224
2225 if (pipe_write_wanted)
1194 { 2226 {
2227 int old_errno;
2228
2229 pipe_write_skipped = 0;
2230 ECB_MEMORY_FENCE_RELEASE;
2231
2232 old_errno = errno; /* save errno because write will clobber it */
2233
1195#if EV_USE_EVENTFD 2234#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2235 if (evpipe [0] < 0)
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 { 2236 {
1202 evpipe [0] = -1; 2237 uint64_t counter = 1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 2238 write (evpipe [1], &counter, sizeof (uint64_t));
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 2239 }
1206 else 2240 else
1207#endif 2241#endif
1208 { 2242 {
1209 while (pipe (evpipe)) 2243#ifdef _WIN32
1210 ev_syserr ("(libev) error creating signal/async pipe"); 2244 WSABUF buf;
1211 2245 DWORD sent;
1212 fd_intern (evpipe [0]); 2246 buf.buf = &buf;
1213 fd_intern (evpipe [1]); 2247 buf.len = 1;
1214 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2248 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2249#else
2250 write (evpipe [1], &(evpipe [1]), 1);
2251#endif
1215 } 2252 }
1216
1217 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1;
1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240 2253
1241 errno = old_errno; 2254 errno = old_errno;
1242 } 2255 }
1243} 2256}
1244 2257
… …
1247static void 2260static void
1248pipecb (EV_P_ ev_io *iow, int revents) 2261pipecb (EV_P_ ev_io *iow, int revents)
1249{ 2262{
1250 int i; 2263 int i;
1251 2264
2265 if (revents & EV_READ)
2266 {
1252#if EV_USE_EVENTFD 2267#if EV_USE_EVENTFD
1253 if (evfd >= 0) 2268 if (evpipe [0] < 0)
1254 { 2269 {
1255 uint64_t counter; 2270 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 2271 read (evpipe [1], &counter, sizeof (uint64_t));
1257 } 2272 }
1258 else 2273 else
1259#endif 2274#endif
1260 { 2275 {
1261 char dummy; 2276 char dummy[4];
2277#ifdef _WIN32
2278 WSABUF buf;
2279 DWORD recvd;
2280 DWORD flags = 0;
2281 buf.buf = dummy;
2282 buf.len = sizeof (dummy);
2283 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2284#else
1262 read (evpipe [0], &dummy, 1); 2285 read (evpipe [0], &dummy, sizeof (dummy));
2286#endif
2287 }
1263 } 2288 }
1264 2289
2290 pipe_write_skipped = 0;
2291
2292 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2293
2294#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 2295 if (sig_pending)
1266 { 2296 {
1267 sig_pending = 0; 2297 sig_pending = 0;
2298
2299 ECB_MEMORY_FENCE;
1268 2300
1269 for (i = EV_NSIG - 1; i--; ) 2301 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 2302 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 2303 ev_feed_signal_event (EV_A_ i + 1);
1272 } 2304 }
2305#endif
1273 2306
1274#if EV_ASYNC_ENABLE 2307#if EV_ASYNC_ENABLE
1275 if (async_pending) 2308 if (async_pending)
1276 { 2309 {
1277 async_pending = 0; 2310 async_pending = 0;
2311
2312 ECB_MEMORY_FENCE;
1278 2313
1279 for (i = asynccnt; i--; ) 2314 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2315 if (asyncs [i]->sent)
1281 { 2316 {
1282 asyncs [i]->sent = 0; 2317 asyncs [i]->sent = 0;
2318 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2319 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2320 }
1285 } 2321 }
1286#endif 2322#endif
1287} 2323}
1288 2324
1289/*****************************************************************************/ 2325/*****************************************************************************/
1290 2326
2327void
2328ev_feed_signal (int signum) EV_THROW
2329{
2330#if EV_MULTIPLICITY
2331 EV_P;
2332 ECB_MEMORY_FENCE_ACQUIRE;
2333 EV_A = signals [signum - 1].loop;
2334
2335 if (!EV_A)
2336 return;
2337#endif
2338
2339 signals [signum - 1].pending = 1;
2340 evpipe_write (EV_A_ &sig_pending);
2341}
2342
1291static void 2343static void
1292ev_sighandler (int signum) 2344ev_sighandler (int signum)
1293{ 2345{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2346#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2347 signal (signum, ev_sighandler);
1300#endif 2348#endif
1301 2349
1302 signals [signum - 1].pending = 1; 2350 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2351}
1305 2352
1306void noinline 2353void noinline
1307ev_feed_signal_event (EV_P_ int signum) 2354ev_feed_signal_event (EV_P_ int signum) EV_THROW
1308{ 2355{
1309 WL w; 2356 WL w;
1310 2357
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2358 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2359 return;
1313 2360
1314 --signum; 2361 --signum;
1315 2362
1316#if EV_MULTIPLICITY 2363#if EV_MULTIPLICITY
… …
1320 if (expect_false (signals [signum].loop != EV_A)) 2367 if (expect_false (signals [signum].loop != EV_A))
1321 return; 2368 return;
1322#endif 2369#endif
1323 2370
1324 signals [signum].pending = 0; 2371 signals [signum].pending = 0;
2372 ECB_MEMORY_FENCE_RELEASE;
1325 2373
1326 for (w = signals [signum].head; w; w = w->next) 2374 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2375 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2376}
1329 2377
… …
1345 break; 2393 break;
1346 } 2394 }
1347} 2395}
1348#endif 2396#endif
1349 2397
2398#endif
2399
1350/*****************************************************************************/ 2400/*****************************************************************************/
1351 2401
2402#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2403static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2404
1356static ev_signal childev; 2405static ev_signal childev;
1357 2406
1358#ifndef WIFCONTINUED 2407#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2408# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2413child_reap (EV_P_ int chain, int pid, int status)
1365{ 2414{
1366 ev_child *w; 2415 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2416 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2417
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2418 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2419 {
1371 if ((w->pid == pid || !w->pid) 2420 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2421 && (!traced || (w->flags & 1)))
1373 { 2422 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2423 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2448 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2449 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2450 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2451
1403 child_reap (EV_A_ pid, pid, status); 2452 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2453 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2454 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2455}
1407 2456
1408#endif 2457#endif
1409 2458
1410/*****************************************************************************/ 2459/*****************************************************************************/
1411 2460
2461#if EV_USE_IOCP
2462# include "ev_iocp.c"
2463#endif
1412#if EV_USE_PORT 2464#if EV_USE_PORT
1413# include "ev_port.c" 2465# include "ev_port.c"
1414#endif 2466#endif
1415#if EV_USE_KQUEUE 2467#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2468# include "ev_kqueue.c"
… …
1423#endif 2475#endif
1424#if EV_USE_SELECT 2476#if EV_USE_SELECT
1425# include "ev_select.c" 2477# include "ev_select.c"
1426#endif 2478#endif
1427 2479
1428int 2480int ecb_cold
1429ev_version_major (void) 2481ev_version_major (void) EV_THROW
1430{ 2482{
1431 return EV_VERSION_MAJOR; 2483 return EV_VERSION_MAJOR;
1432} 2484}
1433 2485
1434int 2486int ecb_cold
1435ev_version_minor (void) 2487ev_version_minor (void) EV_THROW
1436{ 2488{
1437 return EV_VERSION_MINOR; 2489 return EV_VERSION_MINOR;
1438} 2490}
1439 2491
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2492/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2493int inline_size ecb_cold
1442enable_secure (void) 2494enable_secure (void)
1443{ 2495{
1444#ifdef _WIN32 2496#ifdef _WIN32
1445 return 0; 2497 return 0;
1446#else 2498#else
1447 return getuid () != geteuid () 2499 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2500 || getgid () != getegid ();
1449#endif 2501#endif
1450} 2502}
1451 2503
1452unsigned int 2504unsigned int ecb_cold
1453ev_supported_backends (void) 2505ev_supported_backends (void) EV_THROW
1454{ 2506{
1455 unsigned int flags = 0; 2507 unsigned int flags = 0;
1456 2508
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2514
1463 return flags; 2515 return flags;
1464} 2516}
1465 2517
1466unsigned int 2518unsigned int ecb_cold
1467ev_recommended_backends (void) 2519ev_recommended_backends (void) EV_THROW
1468{ 2520{
1469 unsigned int flags = ev_supported_backends (); 2521 unsigned int flags = ev_supported_backends ();
1470 2522
1471#ifndef __NetBSD__ 2523#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2524 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2528#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2529 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2530 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2531 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2532#endif
2533#ifdef __FreeBSD__
2534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2535#endif
1481 2536
1482 return flags; 2537 return flags;
1483} 2538}
1484 2539
2540unsigned int ecb_cold
2541ev_embeddable_backends (void) EV_THROW
2542{
2543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2544
2545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2546 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2547 flags &= ~EVBACKEND_EPOLL;
2548
2549 return flags;
2550}
2551
1485unsigned int 2552unsigned int
1486ev_embeddable_backends (void) 2553ev_backend (EV_P) EV_THROW
1487{ 2554{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2555 return backend;
1489
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */
1492 flags &= ~EVBACKEND_EPOLL;
1493
1494 return flags;
1495} 2556}
1496 2557
2558#if EV_FEATURE_API
1497unsigned int 2559unsigned int
1498ev_backend (EV_P) 2560ev_iteration (EV_P) EV_THROW
1499{ 2561{
1500 return backend; 2562 return loop_count;
1501} 2563}
1502 2564
1503#if EV_MINIMAL < 2
1504unsigned int 2565unsigned int
1505ev_loop_count (EV_P) 2566ev_depth (EV_P) EV_THROW
1506{
1507 return loop_count;
1508}
1509
1510unsigned int
1511ev_loop_depth (EV_P)
1512{ 2567{
1513 return loop_depth; 2568 return loop_depth;
1514} 2569}
1515 2570
1516void 2571void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1518{ 2573{
1519 io_blocktime = interval; 2574 io_blocktime = interval;
1520} 2575}
1521 2576
1522void 2577void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1524{ 2579{
1525 timeout_blocktime = interval; 2580 timeout_blocktime = interval;
1526} 2581}
1527 2582
1528void 2583void
1529ev_set_userdata (EV_P_ void *data) 2584ev_set_userdata (EV_P_ void *data) EV_THROW
1530{ 2585{
1531 userdata = data; 2586 userdata = data;
1532} 2587}
1533 2588
1534void * 2589void *
1535ev_userdata (EV_P) 2590ev_userdata (EV_P) EV_THROW
1536{ 2591{
1537 return userdata; 2592 return userdata;
1538} 2593}
1539 2594
2595void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2596ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1541{ 2597{
1542 invoke_cb = invoke_pending_cb; 2598 invoke_cb = invoke_pending_cb;
1543} 2599}
1544 2600
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2601void
2602ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1546{ 2603{
1547 release_cb = release; 2604 release_cb = release;
1548 acquire_cb = acquire; 2605 acquire_cb = acquire;
1549} 2606}
1550#endif 2607#endif
1551 2608
1552/* initialise a loop structure, must be zero-initialised */ 2609/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2610static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2611loop_init (EV_P_ unsigned int flags) EV_THROW
1555{ 2612{
1556 if (!backend) 2613 if (!backend)
1557 { 2614 {
2615 origflags = flags;
2616
1558#if EV_USE_REALTIME 2617#if EV_USE_REALTIME
1559 if (!have_realtime) 2618 if (!have_realtime)
1560 { 2619 {
1561 struct timespec ts; 2620 struct timespec ts;
1562 2621
… …
1584 if (!(flags & EVFLAG_NOENV) 2643 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2644 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2645 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2646 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2647
1589 ev_rt_now = ev_time (); 2648 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2649 mn_now = get_clock ();
1591 now_floor = mn_now; 2650 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2651 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2652#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2653 invoke_cb = ev_invoke_pending;
1595#endif 2654#endif
1596 2655
1597 io_blocktime = 0.; 2656 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2657 timeout_blocktime = 0.;
1599 backend = 0; 2658 backend = 0;
1600 backend_fd = -1; 2659 backend_fd = -1;
1601 sig_pending = 0; 2660 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2661#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2662 async_pending = 0;
1604#endif 2663#endif
2664 pipe_write_skipped = 0;
2665 pipe_write_wanted = 0;
2666 evpipe [0] = -1;
2667 evpipe [1] = -1;
1605#if EV_USE_INOTIFY 2668#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2669 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2670#endif
1608#if EV_USE_SIGNALFD 2671#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2672 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2673#endif
1611 2674
1612 if (!(flags & 0x0000ffffU)) 2675 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2676 flags |= ev_recommended_backends ();
1614 2677
2678#if EV_USE_IOCP
2679 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2680#endif
1615#if EV_USE_PORT 2681#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2682 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2683#endif
1618#if EV_USE_KQUEUE 2684#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2685 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2694 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2695#endif
1630 2696
1631 ev_prepare_init (&pending_w, pendingcb); 2697 ev_prepare_init (&pending_w, pendingcb);
1632 2698
2699#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2700 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2701 ev_set_priority (&pipe_w, EV_MAXPRI);
2702#endif
1635 } 2703 }
1636} 2704}
1637 2705
1638/* free up a loop structure */ 2706/* free up a loop structure */
1639static void noinline 2707void ecb_cold
1640loop_destroy (EV_P) 2708ev_loop_destroy (EV_P)
1641{ 2709{
1642 int i; 2710 int i;
2711
2712#if EV_MULTIPLICITY
2713 /* mimic free (0) */
2714 if (!EV_A)
2715 return;
2716#endif
2717
2718#if EV_CLEANUP_ENABLE
2719 /* queue cleanup watchers (and execute them) */
2720 if (expect_false (cleanupcnt))
2721 {
2722 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2723 EV_INVOKE_PENDING;
2724 }
2725#endif
2726
2727#if EV_CHILD_ENABLE
2728 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2729 {
2730 ev_ref (EV_A); /* child watcher */
2731 ev_signal_stop (EV_A_ &childev);
2732 }
2733#endif
1643 2734
1644 if (ev_is_active (&pipe_w)) 2735 if (ev_is_active (&pipe_w))
1645 { 2736 {
1646 /*ev_ref (EV_A);*/ 2737 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2738 /*ev_io_stop (EV_A_ &pipe_w);*/
1648 2739
1649#if EV_USE_EVENTFD
1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]); 2740 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]); 2741 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1659 } 2742 }
1660 2743
1661#if EV_USE_SIGNALFD 2744#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2745 if (ev_is_active (&sigfd_w))
1663 close (sigfd); 2746 close (sigfd);
… …
1669#endif 2752#endif
1670 2753
1671 if (backend_fd >= 0) 2754 if (backend_fd >= 0)
1672 close (backend_fd); 2755 close (backend_fd);
1673 2756
2757#if EV_USE_IOCP
2758 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2759#endif
1674#if EV_USE_PORT 2760#if EV_USE_PORT
1675 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2761 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1676#endif 2762#endif
1677#if EV_USE_KQUEUE 2763#if EV_USE_KQUEUE
1678 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2764 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1705 array_free (periodic, EMPTY); 2791 array_free (periodic, EMPTY);
1706#endif 2792#endif
1707#if EV_FORK_ENABLE 2793#if EV_FORK_ENABLE
1708 array_free (fork, EMPTY); 2794 array_free (fork, EMPTY);
1709#endif 2795#endif
2796#if EV_CLEANUP_ENABLE
2797 array_free (cleanup, EMPTY);
2798#endif
1710 array_free (prepare, EMPTY); 2799 array_free (prepare, EMPTY);
1711 array_free (check, EMPTY); 2800 array_free (check, EMPTY);
1712#if EV_ASYNC_ENABLE 2801#if EV_ASYNC_ENABLE
1713 array_free (async, EMPTY); 2802 array_free (async, EMPTY);
1714#endif 2803#endif
1715 2804
1716 backend = 0; 2805 backend = 0;
2806
2807#if EV_MULTIPLICITY
2808 if (ev_is_default_loop (EV_A))
2809#endif
2810 ev_default_loop_ptr = 0;
2811#if EV_MULTIPLICITY
2812 else
2813 ev_free (EV_A);
2814#endif
1717} 2815}
1718 2816
1719#if EV_USE_INOTIFY 2817#if EV_USE_INOTIFY
1720inline_size void infy_fork (EV_P); 2818inline_size void infy_fork (EV_P);
1721#endif 2819#endif
… …
1734#endif 2832#endif
1735#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
1736 infy_fork (EV_A); 2834 infy_fork (EV_A);
1737#endif 2835#endif
1738 2836
2837#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1739 if (ev_is_active (&pipe_w)) 2838 if (ev_is_active (&pipe_w))
1740 { 2839 {
1741 /* this "locks" the handlers against writing to the pipe */ 2840 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1742 /* while we modify the fd vars */
1743 sig_pending = 1;
1744#if EV_ASYNC_ENABLE
1745 async_pending = 1;
1746#endif
1747 2841
1748 ev_ref (EV_A); 2842 ev_ref (EV_A);
1749 ev_io_stop (EV_A_ &pipe_w); 2843 ev_io_stop (EV_A_ &pipe_w);
1750 2844
1751#if EV_USE_EVENTFD
1752 if (evfd >= 0)
1753 close (evfd);
1754#endif
1755
1756 if (evpipe [0] >= 0) 2845 if (evpipe [0] >= 0)
1757 {
1758 EV_WIN32_CLOSE_FD (evpipe [0]); 2846 EV_WIN32_CLOSE_FD (evpipe [0]);
1759 EV_WIN32_CLOSE_FD (evpipe [1]);
1760 }
1761 2847
1762 evpipe_init (EV_A); 2848 evpipe_init (EV_A);
1763 /* now iterate over everything, in case we missed something */ 2849 /* iterate over everything, in case we missed something before */
1764 pipecb (EV_A_ &pipe_w, EV_READ); 2850 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1765 } 2851 }
2852#endif
1766 2853
1767 postfork = 0; 2854 postfork = 0;
1768} 2855}
1769 2856
1770#if EV_MULTIPLICITY 2857#if EV_MULTIPLICITY
1771 2858
1772struct ev_loop * 2859struct ev_loop * ecb_cold
1773ev_loop_new (unsigned int flags) 2860ev_loop_new (unsigned int flags) EV_THROW
1774{ 2861{
1775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2862 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1776 2863
1777 memset (EV_A, 0, sizeof (struct ev_loop)); 2864 memset (EV_A, 0, sizeof (struct ev_loop));
1778 loop_init (EV_A_ flags); 2865 loop_init (EV_A_ flags);
1779 2866
1780 if (ev_backend (EV_A)) 2867 if (ev_backend (EV_A))
1781 return EV_A; 2868 return EV_A;
1782 2869
2870 ev_free (EV_A);
1783 return 0; 2871 return 0;
1784} 2872}
1785 2873
1786void
1787ev_loop_destroy (EV_P)
1788{
1789 loop_destroy (EV_A);
1790 ev_free (loop);
1791}
1792
1793void
1794ev_loop_fork (EV_P)
1795{
1796 postfork = 1; /* must be in line with ev_default_fork */
1797}
1798#endif /* multiplicity */ 2874#endif /* multiplicity */
1799 2875
1800#if EV_VERIFY 2876#if EV_VERIFY
1801static void noinline 2877static void noinline ecb_cold
1802verify_watcher (EV_P_ W w) 2878verify_watcher (EV_P_ W w)
1803{ 2879{
1804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2880 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1805 2881
1806 if (w->pending) 2882 if (w->pending)
1807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2883 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1808} 2884}
1809 2885
1810static void noinline 2886static void noinline ecb_cold
1811verify_heap (EV_P_ ANHE *heap, int N) 2887verify_heap (EV_P_ ANHE *heap, int N)
1812{ 2888{
1813 int i; 2889 int i;
1814 2890
1815 for (i = HEAP0; i < N + HEAP0; ++i) 2891 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1820 2896
1821 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2897 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1822 } 2898 }
1823} 2899}
1824 2900
1825static void noinline 2901static void noinline ecb_cold
1826array_verify (EV_P_ W *ws, int cnt) 2902array_verify (EV_P_ W *ws, int cnt)
1827{ 2903{
1828 while (cnt--) 2904 while (cnt--)
1829 { 2905 {
1830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2906 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1831 verify_watcher (EV_A_ ws [cnt]); 2907 verify_watcher (EV_A_ ws [cnt]);
1832 } 2908 }
1833} 2909}
1834#endif 2910#endif
1835 2911
1836#if EV_MINIMAL < 2 2912#if EV_FEATURE_API
1837void 2913void ecb_cold
1838ev_loop_verify (EV_P) 2914ev_verify (EV_P) EV_THROW
1839{ 2915{
1840#if EV_VERIFY 2916#if EV_VERIFY
1841 int i; 2917 int i;
1842 WL w; 2918 WL w, w2;
1843 2919
1844 assert (activecnt >= -1); 2920 assert (activecnt >= -1);
1845 2921
1846 assert (fdchangemax >= fdchangecnt); 2922 assert (fdchangemax >= fdchangecnt);
1847 for (i = 0; i < fdchangecnt; ++i) 2923 for (i = 0; i < fdchangecnt; ++i)
1848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2924 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1849 2925
1850 assert (anfdmax >= 0); 2926 assert (anfdmax >= 0);
1851 for (i = 0; i < anfdmax; ++i) 2927 for (i = 0; i < anfdmax; ++i)
2928 {
2929 int j = 0;
2930
1852 for (w = anfds [i].head; w; w = w->next) 2931 for (w = w2 = anfds [i].head; w; w = w->next)
1853 { 2932 {
1854 verify_watcher (EV_A_ (W)w); 2933 verify_watcher (EV_A_ (W)w);
2934
2935 if (j++ & 1)
2936 {
2937 assert (("libev: io watcher list contains a loop", w != w2));
2938 w2 = w2->next;
2939 }
2940
1855 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2941 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1856 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2942 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1857 } 2943 }
2944 }
1858 2945
1859 assert (timermax >= timercnt); 2946 assert (timermax >= timercnt);
1860 verify_heap (EV_A_ timers, timercnt); 2947 verify_heap (EV_A_ timers, timercnt);
1861 2948
1862#if EV_PERIODIC_ENABLE 2949#if EV_PERIODIC_ENABLE
… …
1877#if EV_FORK_ENABLE 2964#if EV_FORK_ENABLE
1878 assert (forkmax >= forkcnt); 2965 assert (forkmax >= forkcnt);
1879 array_verify (EV_A_ (W *)forks, forkcnt); 2966 array_verify (EV_A_ (W *)forks, forkcnt);
1880#endif 2967#endif
1881 2968
2969#if EV_CLEANUP_ENABLE
2970 assert (cleanupmax >= cleanupcnt);
2971 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2972#endif
2973
1882#if EV_ASYNC_ENABLE 2974#if EV_ASYNC_ENABLE
1883 assert (asyncmax >= asynccnt); 2975 assert (asyncmax >= asynccnt);
1884 array_verify (EV_A_ (W *)asyncs, asynccnt); 2976 array_verify (EV_A_ (W *)asyncs, asynccnt);
1885#endif 2977#endif
1886 2978
2979#if EV_PREPARE_ENABLE
1887 assert (preparemax >= preparecnt); 2980 assert (preparemax >= preparecnt);
1888 array_verify (EV_A_ (W *)prepares, preparecnt); 2981 array_verify (EV_A_ (W *)prepares, preparecnt);
2982#endif
1889 2983
2984#if EV_CHECK_ENABLE
1890 assert (checkmax >= checkcnt); 2985 assert (checkmax >= checkcnt);
1891 array_verify (EV_A_ (W *)checks, checkcnt); 2986 array_verify (EV_A_ (W *)checks, checkcnt);
2987#endif
1892 2988
1893# if 0 2989# if 0
2990#if EV_CHILD_ENABLE
1894 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2991 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1895 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2992 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2993#endif
1896# endif 2994# endif
1897#endif 2995#endif
1898} 2996}
1899#endif 2997#endif
1900 2998
1901#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
1902struct ev_loop * 3000struct ev_loop * ecb_cold
1903ev_default_loop_init (unsigned int flags)
1904#else 3001#else
1905int 3002int
3003#endif
1906ev_default_loop (unsigned int flags) 3004ev_default_loop (unsigned int flags) EV_THROW
1907#endif
1908{ 3005{
1909 if (!ev_default_loop_ptr) 3006 if (!ev_default_loop_ptr)
1910 { 3007 {
1911#if EV_MULTIPLICITY 3008#if EV_MULTIPLICITY
1912 EV_P = ev_default_loop_ptr = &default_loop_struct; 3009 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1916 3013
1917 loop_init (EV_A_ flags); 3014 loop_init (EV_A_ flags);
1918 3015
1919 if (ev_backend (EV_A)) 3016 if (ev_backend (EV_A))
1920 { 3017 {
1921#ifndef _WIN32 3018#if EV_CHILD_ENABLE
1922 ev_signal_init (&childev, childcb, SIGCHLD); 3019 ev_signal_init (&childev, childcb, SIGCHLD);
1923 ev_set_priority (&childev, EV_MAXPRI); 3020 ev_set_priority (&childev, EV_MAXPRI);
1924 ev_signal_start (EV_A_ &childev); 3021 ev_signal_start (EV_A_ &childev);
1925 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3022 ev_unref (EV_A); /* child watcher should not keep loop alive */
1926#endif 3023#endif
… …
1931 3028
1932 return ev_default_loop_ptr; 3029 return ev_default_loop_ptr;
1933} 3030}
1934 3031
1935void 3032void
1936ev_default_destroy (void) 3033ev_loop_fork (EV_P) EV_THROW
1937{ 3034{
1938#if EV_MULTIPLICITY 3035 postfork = 1;
1939 EV_P = ev_default_loop_ptr;
1940#endif
1941
1942 ev_default_loop_ptr = 0;
1943
1944#ifndef _WIN32
1945 ev_ref (EV_A); /* child watcher */
1946 ev_signal_stop (EV_A_ &childev);
1947#endif
1948
1949 loop_destroy (EV_A);
1950}
1951
1952void
1953ev_default_fork (void)
1954{
1955#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr;
1957#endif
1958
1959 postfork = 1; /* must be in line with ev_loop_fork */
1960} 3036}
1961 3037
1962/*****************************************************************************/ 3038/*****************************************************************************/
1963 3039
1964void 3040void
… …
1966{ 3042{
1967 EV_CB_INVOKE ((W)w, revents); 3043 EV_CB_INVOKE ((W)w, revents);
1968} 3044}
1969 3045
1970unsigned int 3046unsigned int
1971ev_pending_count (EV_P) 3047ev_pending_count (EV_P) EV_THROW
1972{ 3048{
1973 int pri; 3049 int pri;
1974 unsigned int count = 0; 3050 unsigned int count = 0;
1975 3051
1976 for (pri = NUMPRI; pri--; ) 3052 for (pri = NUMPRI; pri--; )
… …
1980} 3056}
1981 3057
1982void noinline 3058void noinline
1983ev_invoke_pending (EV_P) 3059ev_invoke_pending (EV_P)
1984{ 3060{
1985 int pri; 3061 pendingpri = NUMPRI;
1986 3062
1987 for (pri = NUMPRI; pri--; ) 3063 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3064 {
3065 --pendingpri;
3066
1988 while (pendingcnt [pri]) 3067 while (pendingcnt [pendingpri])
1989 { 3068 {
1990 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3069 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1991 3070
1992 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1993 /* ^ this is no longer true, as pending_w could be here */
1994
1995 p->w->pending = 0; 3071 p->w->pending = 0;
1996 EV_CB_INVOKE (p->w, p->events); 3072 EV_CB_INVOKE (p->w, p->events);
1997 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
1998 } 3074 }
3075 }
1999} 3076}
2000 3077
2001#if EV_IDLE_ENABLE 3078#if EV_IDLE_ENABLE
2002/* make idle watchers pending. this handles the "call-idle */ 3079/* make idle watchers pending. this handles the "call-idle */
2003/* only when higher priorities are idle" logic */ 3080/* only when higher priorities are idle" logic */
… …
2055 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2056 feed_reverse (EV_A_ (W)w); 3133 feed_reverse (EV_A_ (W)w);
2057 } 3134 }
2058 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3135 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2059 3136
2060 feed_reverse_done (EV_A_ EV_TIMEOUT); 3137 feed_reverse_done (EV_A_ EV_TIMER);
2061 } 3138 }
2062} 3139}
2063 3140
2064#if EV_PERIODIC_ENABLE 3141#if EV_PERIODIC_ENABLE
3142
3143static void noinline
3144periodic_recalc (EV_P_ ev_periodic *w)
3145{
3146 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3147 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3148
3149 /* the above almost always errs on the low side */
3150 while (at <= ev_rt_now)
3151 {
3152 ev_tstamp nat = at + w->interval;
3153
3154 /* when resolution fails us, we use ev_rt_now */
3155 if (expect_false (nat == at))
3156 {
3157 at = ev_rt_now;
3158 break;
3159 }
3160
3161 at = nat;
3162 }
3163
3164 ev_at (w) = at;
3165}
3166
2065/* make periodics pending */ 3167/* make periodics pending */
2066inline_size void 3168inline_size void
2067periodics_reify (EV_P) 3169periodics_reify (EV_P)
2068{ 3170{
2069 EV_FREQUENT_CHECK; 3171 EV_FREQUENT_CHECK;
2070 3172
2071 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3173 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2072 { 3174 {
2073 int feed_count = 0;
2074
2075 do 3175 do
2076 { 3176 {
2077 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2078 3178
2079 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2088 ANHE_at_cache (periodics [HEAP0]); 3188 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 3189 downheap (periodics, periodiccnt, HEAP0);
2090 } 3190 }
2091 else if (w->interval) 3191 else if (w->interval)
2092 { 3192 {
2093 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3193 periodic_recalc (EV_A_ w);
2094 /* if next trigger time is not sufficiently in the future, put it there */
2095 /* this might happen because of floating point inexactness */
2096 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2097 {
2098 ev_at (w) += w->interval;
2099
2100 /* if interval is unreasonably low we might still have a time in the past */
2101 /* so correct this. this will make the periodic very inexact, but the user */
2102 /* has effectively asked to get triggered more often than possible */
2103 if (ev_at (w) < ev_rt_now)
2104 ev_at (w) = ev_rt_now;
2105 }
2106
2107 ANHE_at_cache (periodics [HEAP0]); 3194 ANHE_at_cache (periodics [HEAP0]);
2108 downheap (periodics, periodiccnt, HEAP0); 3195 downheap (periodics, periodiccnt, HEAP0);
2109 } 3196 }
2110 else 3197 else
2111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3198 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2118 feed_reverse_done (EV_A_ EV_PERIODIC); 3205 feed_reverse_done (EV_A_ EV_PERIODIC);
2119 } 3206 }
2120} 3207}
2121 3208
2122/* simply recalculate all periodics */ 3209/* simply recalculate all periodics */
2123/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3210/* TODO: maybe ensure that at least one event happens when jumping forward? */
2124static void noinline 3211static void noinline ecb_cold
2125periodics_reschedule (EV_P) 3212periodics_reschedule (EV_P)
2126{ 3213{
2127 int i; 3214 int i;
2128 3215
2129 /* adjust periodics after time jump */ 3216 /* adjust periodics after time jump */
… …
2132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3219 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2133 3220
2134 if (w->reschedule_cb) 3221 if (w->reschedule_cb)
2135 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3222 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2136 else if (w->interval) 3223 else if (w->interval)
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3224 periodic_recalc (EV_A_ w);
2138 3225
2139 ANHE_at_cache (periodics [i]); 3226 ANHE_at_cache (periodics [i]);
2140 } 3227 }
2141 3228
2142 reheap (periodics, periodiccnt); 3229 reheap (periodics, periodiccnt);
2143} 3230}
2144#endif 3231#endif
2145 3232
2146/* adjust all timers by a given offset */ 3233/* adjust all timers by a given offset */
2147static void noinline 3234static void noinline ecb_cold
2148timers_reschedule (EV_P_ ev_tstamp adjust) 3235timers_reschedule (EV_P_ ev_tstamp adjust)
2149{ 3236{
2150 int i; 3237 int i;
2151 3238
2152 for (i = 0; i < timercnt; ++i) 3239 for (i = 0; i < timercnt; ++i)
… …
2156 ANHE_at_cache (*he); 3243 ANHE_at_cache (*he);
2157 } 3244 }
2158} 3245}
2159 3246
2160/* fetch new monotonic and realtime times from the kernel */ 3247/* fetch new monotonic and realtime times from the kernel */
2161/* also detetc if there was a timejump, and act accordingly */ 3248/* also detect if there was a timejump, and act accordingly */
2162inline_speed void 3249inline_speed void
2163time_update (EV_P_ ev_tstamp max_block) 3250time_update (EV_P_ ev_tstamp max_block)
2164{ 3251{
2165#if EV_USE_MONOTONIC 3252#if EV_USE_MONOTONIC
2166 if (expect_true (have_monotonic)) 3253 if (expect_true (have_monotonic))
… …
2189 * doesn't hurt either as we only do this on time-jumps or 3276 * doesn't hurt either as we only do this on time-jumps or
2190 * in the unlikely event of having been preempted here. 3277 * in the unlikely event of having been preempted here.
2191 */ 3278 */
2192 for (i = 4; --i; ) 3279 for (i = 4; --i; )
2193 { 3280 {
3281 ev_tstamp diff;
2194 rtmn_diff = ev_rt_now - mn_now; 3282 rtmn_diff = ev_rt_now - mn_now;
2195 3283
3284 diff = odiff - rtmn_diff;
3285
2196 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3286 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2197 return; /* all is well */ 3287 return; /* all is well */
2198 3288
2199 ev_rt_now = ev_time (); 3289 ev_rt_now = ev_time ();
2200 mn_now = get_clock (); 3290 mn_now = get_clock ();
2201 now_floor = mn_now; 3291 now_floor = mn_now;
… …
2223 3313
2224 mn_now = ev_rt_now; 3314 mn_now = ev_rt_now;
2225 } 3315 }
2226} 3316}
2227 3317
2228void 3318int
2229ev_loop (EV_P_ int flags) 3319ev_run (EV_P_ int flags)
2230{ 3320{
2231#if EV_MINIMAL < 2 3321#if EV_FEATURE_API
2232 ++loop_depth; 3322 ++loop_depth;
2233#endif 3323#endif
2234 3324
2235 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3325 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2236 3326
2237 loop_done = EVUNLOOP_CANCEL; 3327 loop_done = EVBREAK_CANCEL;
2238 3328
2239 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3329 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2240 3330
2241 do 3331 do
2242 { 3332 {
2243#if EV_VERIFY >= 2 3333#if EV_VERIFY >= 2
2244 ev_loop_verify (EV_A); 3334 ev_verify (EV_A);
2245#endif 3335#endif
2246 3336
2247#ifndef _WIN32 3337#ifndef _WIN32
2248 if (expect_false (curpid)) /* penalise the forking check even more */ 3338 if (expect_false (curpid)) /* penalise the forking check even more */
2249 if (expect_false (getpid () != curpid)) 3339 if (expect_false (getpid () != curpid))
… …
2261 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3351 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2262 EV_INVOKE_PENDING; 3352 EV_INVOKE_PENDING;
2263 } 3353 }
2264#endif 3354#endif
2265 3355
3356#if EV_PREPARE_ENABLE
2266 /* queue prepare watchers (and execute them) */ 3357 /* queue prepare watchers (and execute them) */
2267 if (expect_false (preparecnt)) 3358 if (expect_false (preparecnt))
2268 { 3359 {
2269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3360 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2270 EV_INVOKE_PENDING; 3361 EV_INVOKE_PENDING;
2271 } 3362 }
3363#endif
2272 3364
2273 if (expect_false (loop_done)) 3365 if (expect_false (loop_done))
2274 break; 3366 break;
2275 3367
2276 /* we might have forked, so reify kernel state if necessary */ 3368 /* we might have forked, so reify kernel state if necessary */
… …
2283 /* calculate blocking time */ 3375 /* calculate blocking time */
2284 { 3376 {
2285 ev_tstamp waittime = 0.; 3377 ev_tstamp waittime = 0.;
2286 ev_tstamp sleeptime = 0.; 3378 ev_tstamp sleeptime = 0.;
2287 3379
3380 /* remember old timestamp for io_blocktime calculation */
3381 ev_tstamp prev_mn_now = mn_now;
3382
3383 /* update time to cancel out callback processing overhead */
3384 time_update (EV_A_ 1e100);
3385
3386 /* from now on, we want a pipe-wake-up */
3387 pipe_write_wanted = 1;
3388
3389 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3390
2288 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3391 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2289 { 3392 {
2290 /* remember old timestamp for io_blocktime calculation */
2291 ev_tstamp prev_mn_now = mn_now;
2292
2293 /* update time to cancel out callback processing overhead */
2294 time_update (EV_A_ 1e100);
2295
2296 waittime = MAX_BLOCKTIME; 3393 waittime = MAX_BLOCKTIME;
2297 3394
2298 if (timercnt) 3395 if (timercnt)
2299 { 3396 {
2300 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3397 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2301 if (waittime > to) waittime = to; 3398 if (waittime > to) waittime = to;
2302 } 3399 }
2303 3400
2304#if EV_PERIODIC_ENABLE 3401#if EV_PERIODIC_ENABLE
2305 if (periodiccnt) 3402 if (periodiccnt)
2306 { 3403 {
2307 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2308 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2309 } 3406 }
2310#endif 3407#endif
2311 3408
2312 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3409 /* don't let timeouts decrease the waittime below timeout_blocktime */
2313 if (expect_false (waittime < timeout_blocktime)) 3410 if (expect_false (waittime < timeout_blocktime))
2314 waittime = timeout_blocktime; 3411 waittime = timeout_blocktime;
3412
3413 /* at this point, we NEED to wait, so we have to ensure */
3414 /* to pass a minimum nonzero value to the backend */
3415 if (expect_false (waittime < backend_mintime))
3416 waittime = backend_mintime;
2315 3417
2316 /* extra check because io_blocktime is commonly 0 */ 3418 /* extra check because io_blocktime is commonly 0 */
2317 if (expect_false (io_blocktime)) 3419 if (expect_false (io_blocktime))
2318 { 3420 {
2319 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3421 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2320 3422
2321 if (sleeptime > waittime - backend_fudge) 3423 if (sleeptime > waittime - backend_mintime)
2322 sleeptime = waittime - backend_fudge; 3424 sleeptime = waittime - backend_mintime;
2323 3425
2324 if (expect_true (sleeptime > 0.)) 3426 if (expect_true (sleeptime > 0.))
2325 { 3427 {
2326 ev_sleep (sleeptime); 3428 ev_sleep (sleeptime);
2327 waittime -= sleeptime; 3429 waittime -= sleeptime;
2328 } 3430 }
2329 } 3431 }
2330 } 3432 }
2331 3433
2332#if EV_MINIMAL < 2 3434#if EV_FEATURE_API
2333 ++loop_count; 3435 ++loop_count;
2334#endif 3436#endif
2335 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2336 backend_poll (EV_A_ waittime); 3438 backend_poll (EV_A_ waittime);
2337 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3440
3441 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3442
3443 ECB_MEMORY_FENCE_ACQUIRE;
3444 if (pipe_write_skipped)
3445 {
3446 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3447 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3448 }
3449
2338 3450
2339 /* update ev_rt_now, do magic */ 3451 /* update ev_rt_now, do magic */
2340 time_update (EV_A_ waittime + sleeptime); 3452 time_update (EV_A_ waittime + sleeptime);
2341 } 3453 }
2342 3454
… …
2349#if EV_IDLE_ENABLE 3461#if EV_IDLE_ENABLE
2350 /* queue idle watchers unless other events are pending */ 3462 /* queue idle watchers unless other events are pending */
2351 idle_reify (EV_A); 3463 idle_reify (EV_A);
2352#endif 3464#endif
2353 3465
3466#if EV_CHECK_ENABLE
2354 /* queue check watchers, to be executed first */ 3467 /* queue check watchers, to be executed first */
2355 if (expect_false (checkcnt)) 3468 if (expect_false (checkcnt))
2356 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3469 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3470#endif
2357 3471
2358 EV_INVOKE_PENDING; 3472 EV_INVOKE_PENDING;
2359 } 3473 }
2360 while (expect_true ( 3474 while (expect_true (
2361 activecnt 3475 activecnt
2362 && !loop_done 3476 && !loop_done
2363 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3477 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2364 )); 3478 ));
2365 3479
2366 if (loop_done == EVUNLOOP_ONE) 3480 if (loop_done == EVBREAK_ONE)
2367 loop_done = EVUNLOOP_CANCEL; 3481 loop_done = EVBREAK_CANCEL;
2368 3482
2369#if EV_MINIMAL < 2 3483#if EV_FEATURE_API
2370 --loop_depth; 3484 --loop_depth;
2371#endif 3485#endif
3486
3487 return activecnt;
2372} 3488}
2373 3489
2374void 3490void
2375ev_unloop (EV_P_ int how) 3491ev_break (EV_P_ int how) EV_THROW
2376{ 3492{
2377 loop_done = how; 3493 loop_done = how;
2378} 3494}
2379 3495
2380void 3496void
2381ev_ref (EV_P) 3497ev_ref (EV_P) EV_THROW
2382{ 3498{
2383 ++activecnt; 3499 ++activecnt;
2384} 3500}
2385 3501
2386void 3502void
2387ev_unref (EV_P) 3503ev_unref (EV_P) EV_THROW
2388{ 3504{
2389 --activecnt; 3505 --activecnt;
2390} 3506}
2391 3507
2392void 3508void
2393ev_now_update (EV_P) 3509ev_now_update (EV_P) EV_THROW
2394{ 3510{
2395 time_update (EV_A_ 1e100); 3511 time_update (EV_A_ 1e100);
2396} 3512}
2397 3513
2398void 3514void
2399ev_suspend (EV_P) 3515ev_suspend (EV_P) EV_THROW
2400{ 3516{
2401 ev_now_update (EV_A); 3517 ev_now_update (EV_A);
2402} 3518}
2403 3519
2404void 3520void
2405ev_resume (EV_P) 3521ev_resume (EV_P) EV_THROW
2406{ 3522{
2407 ev_tstamp mn_prev = mn_now; 3523 ev_tstamp mn_prev = mn_now;
2408 3524
2409 ev_now_update (EV_A); 3525 ev_now_update (EV_A);
2410 timers_reschedule (EV_A_ mn_now - mn_prev); 3526 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2449 w->pending = 0; 3565 w->pending = 0;
2450 } 3566 }
2451} 3567}
2452 3568
2453int 3569int
2454ev_clear_pending (EV_P_ void *w) 3570ev_clear_pending (EV_P_ void *w) EV_THROW
2455{ 3571{
2456 W w_ = (W)w; 3572 W w_ = (W)w;
2457 int pending = w_->pending; 3573 int pending = w_->pending;
2458 3574
2459 if (expect_true (pending)) 3575 if (expect_true (pending))
… …
2492} 3608}
2493 3609
2494/*****************************************************************************/ 3610/*****************************************************************************/
2495 3611
2496void noinline 3612void noinline
2497ev_io_start (EV_P_ ev_io *w) 3613ev_io_start (EV_P_ ev_io *w) EV_THROW
2498{ 3614{
2499 int fd = w->fd; 3615 int fd = w->fd;
2500 3616
2501 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2502 return; 3618 return;
2503 3619
2504 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3620 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2505 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3621 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2506 3622
2507 EV_FREQUENT_CHECK; 3623 EV_FREQUENT_CHECK;
2508 3624
2509 ev_start (EV_A_ (W)w, 1); 3625 ev_start (EV_A_ (W)w, 1);
2510 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3626 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2511 wlist_add (&anfds[fd].head, (WL)w); 3627 wlist_add (&anfds[fd].head, (WL)w);
2512 3628
3629 /* common bug, apparently */
3630 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3631
2513 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3632 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2514 w->events &= ~EV__IOFDSET; 3633 w->events &= ~EV__IOFDSET;
2515 3634
2516 EV_FREQUENT_CHECK; 3635 EV_FREQUENT_CHECK;
2517} 3636}
2518 3637
2519void noinline 3638void noinline
2520ev_io_stop (EV_P_ ev_io *w) 3639ev_io_stop (EV_P_ ev_io *w) EV_THROW
2521{ 3640{
2522 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2523 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2524 return; 3643 return;
2525 3644
… …
2528 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2529 3648
2530 wlist_del (&anfds[w->fd].head, (WL)w); 3649 wlist_del (&anfds[w->fd].head, (WL)w);
2531 ev_stop (EV_A_ (W)w); 3650 ev_stop (EV_A_ (W)w);
2532 3651
2533 fd_change (EV_A_ w->fd, 1); 3652 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2534 3653
2535 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2536} 3655}
2537 3656
2538void noinline 3657void noinline
2539ev_timer_start (EV_P_ ev_timer *w) 3658ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2540{ 3659{
2541 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
2542 return; 3661 return;
2543 3662
2544 ev_at (w) += mn_now; 3663 ev_at (w) += mn_now;
… …
2558 3677
2559 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3678 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2560} 3679}
2561 3680
2562void noinline 3681void noinline
2563ev_timer_stop (EV_P_ ev_timer *w) 3682ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2564{ 3683{
2565 clear_pending (EV_A_ (W)w); 3684 clear_pending (EV_A_ (W)w);
2566 if (expect_false (!ev_is_active (w))) 3685 if (expect_false (!ev_is_active (w)))
2567 return; 3686 return;
2568 3687
… …
2580 timers [active] = timers [timercnt + HEAP0]; 3699 timers [active] = timers [timercnt + HEAP0];
2581 adjustheap (timers, timercnt, active); 3700 adjustheap (timers, timercnt, active);
2582 } 3701 }
2583 } 3702 }
2584 3703
2585 EV_FREQUENT_CHECK;
2586
2587 ev_at (w) -= mn_now; 3704 ev_at (w) -= mn_now;
2588 3705
2589 ev_stop (EV_A_ (W)w); 3706 ev_stop (EV_A_ (W)w);
3707
3708 EV_FREQUENT_CHECK;
2590} 3709}
2591 3710
2592void noinline 3711void noinline
2593ev_timer_again (EV_P_ ev_timer *w) 3712ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2594{ 3713{
2595 EV_FREQUENT_CHECK; 3714 EV_FREQUENT_CHECK;
3715
3716 clear_pending (EV_A_ (W)w);
2596 3717
2597 if (ev_is_active (w)) 3718 if (ev_is_active (w))
2598 { 3719 {
2599 if (w->repeat) 3720 if (w->repeat)
2600 { 3721 {
… …
2613 3734
2614 EV_FREQUENT_CHECK; 3735 EV_FREQUENT_CHECK;
2615} 3736}
2616 3737
2617ev_tstamp 3738ev_tstamp
2618ev_timer_remaining (EV_P_ ev_timer *w) 3739ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2619{ 3740{
2620 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3741 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2621} 3742}
2622 3743
2623#if EV_PERIODIC_ENABLE 3744#if EV_PERIODIC_ENABLE
2624void noinline 3745void noinline
2625ev_periodic_start (EV_P_ ev_periodic *w) 3746ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2626{ 3747{
2627 if (expect_false (ev_is_active (w))) 3748 if (expect_false (ev_is_active (w)))
2628 return; 3749 return;
2629 3750
2630 if (w->reschedule_cb) 3751 if (w->reschedule_cb)
2631 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3752 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2632 else if (w->interval) 3753 else if (w->interval)
2633 { 3754 {
2634 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3755 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2635 /* this formula differs from the one in periodic_reify because we do not always round up */ 3756 periodic_recalc (EV_A_ w);
2636 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2637 } 3757 }
2638 else 3758 else
2639 ev_at (w) = w->offset; 3759 ev_at (w) = w->offset;
2640 3760
2641 EV_FREQUENT_CHECK; 3761 EV_FREQUENT_CHECK;
… …
2651 3771
2652 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3772 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2653} 3773}
2654 3774
2655void noinline 3775void noinline
2656ev_periodic_stop (EV_P_ ev_periodic *w) 3776ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2657{ 3777{
2658 clear_pending (EV_A_ (W)w); 3778 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3779 if (expect_false (!ev_is_active (w)))
2660 return; 3780 return;
2661 3781
… …
2673 periodics [active] = periodics [periodiccnt + HEAP0]; 3793 periodics [active] = periodics [periodiccnt + HEAP0];
2674 adjustheap (periodics, periodiccnt, active); 3794 adjustheap (periodics, periodiccnt, active);
2675 } 3795 }
2676 } 3796 }
2677 3797
2678 EV_FREQUENT_CHECK;
2679
2680 ev_stop (EV_A_ (W)w); 3798 ev_stop (EV_A_ (W)w);
3799
3800 EV_FREQUENT_CHECK;
2681} 3801}
2682 3802
2683void noinline 3803void noinline
2684ev_periodic_again (EV_P_ ev_periodic *w) 3804ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2685{ 3805{
2686 /* TODO: use adjustheap and recalculation */ 3806 /* TODO: use adjustheap and recalculation */
2687 ev_periodic_stop (EV_A_ w); 3807 ev_periodic_stop (EV_A_ w);
2688 ev_periodic_start (EV_A_ w); 3808 ev_periodic_start (EV_A_ w);
2689} 3809}
… …
2691 3811
2692#ifndef SA_RESTART 3812#ifndef SA_RESTART
2693# define SA_RESTART 0 3813# define SA_RESTART 0
2694#endif 3814#endif
2695 3815
3816#if EV_SIGNAL_ENABLE
3817
2696void noinline 3818void noinline
2697ev_signal_start (EV_P_ ev_signal *w) 3819ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2698{ 3820{
2699 if (expect_false (ev_is_active (w))) 3821 if (expect_false (ev_is_active (w)))
2700 return; 3822 return;
2701 3823
2702 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3824 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2704#if EV_MULTIPLICITY 3826#if EV_MULTIPLICITY
2705 assert (("libev: a signal must not be attached to two different loops", 3827 assert (("libev: a signal must not be attached to two different loops",
2706 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3828 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2707 3829
2708 signals [w->signum - 1].loop = EV_A; 3830 signals [w->signum - 1].loop = EV_A;
3831 ECB_MEMORY_FENCE_RELEASE;
2709#endif 3832#endif
2710 3833
2711 EV_FREQUENT_CHECK; 3834 EV_FREQUENT_CHECK;
2712 3835
2713#if EV_USE_SIGNALFD 3836#if EV_USE_SIGNALFD
… …
2746 if (!((WL)w)->next) 3869 if (!((WL)w)->next)
2747# if EV_USE_SIGNALFD 3870# if EV_USE_SIGNALFD
2748 if (sigfd < 0) /*TODO*/ 3871 if (sigfd < 0) /*TODO*/
2749# endif 3872# endif
2750 { 3873 {
2751# if _WIN32 3874# ifdef _WIN32
2752 evpipe_init (EV_A); 3875 evpipe_init (EV_A);
2753 3876
2754 signal (w->signum, ev_sighandler); 3877 signal (w->signum, ev_sighandler);
2755# else 3878# else
2756 struct sigaction sa; 3879 struct sigaction sa;
… …
2760 sa.sa_handler = ev_sighandler; 3883 sa.sa_handler = ev_sighandler;
2761 sigfillset (&sa.sa_mask); 3884 sigfillset (&sa.sa_mask);
2762 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3885 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2763 sigaction (w->signum, &sa, 0); 3886 sigaction (w->signum, &sa, 0);
2764 3887
3888 if (origflags & EVFLAG_NOSIGMASK)
3889 {
2765 sigemptyset (&sa.sa_mask); 3890 sigemptyset (&sa.sa_mask);
2766 sigaddset (&sa.sa_mask, w->signum); 3891 sigaddset (&sa.sa_mask, w->signum);
2767 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3892 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3893 }
2768#endif 3894#endif
2769 } 3895 }
2770 3896
2771 EV_FREQUENT_CHECK; 3897 EV_FREQUENT_CHECK;
2772} 3898}
2773 3899
2774void noinline 3900void noinline
2775ev_signal_stop (EV_P_ ev_signal *w) 3901ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2776{ 3902{
2777 clear_pending (EV_A_ (W)w); 3903 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 3904 if (expect_false (!ev_is_active (w)))
2779 return; 3905 return;
2780 3906
… …
2789 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3915 signals [w->signum - 1].loop = 0; /* unattach from signal */
2790#endif 3916#endif
2791#if EV_USE_SIGNALFD 3917#if EV_USE_SIGNALFD
2792 if (sigfd >= 0) 3918 if (sigfd >= 0)
2793 { 3919 {
2794 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3920 sigset_t ss;
3921
3922 sigemptyset (&ss);
3923 sigaddset (&ss, w->signum);
2795 sigdelset (&sigfd_set, w->signum); 3924 sigdelset (&sigfd_set, w->signum);
3925
2796 signalfd (sigfd, &sigfd_set, 0); 3926 signalfd (sigfd, &sigfd_set, 0);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3927 sigprocmask (SIG_UNBLOCK, &ss, 0);
2798 /*TODO: maybe unblock signal? */
2799 } 3928 }
2800 else 3929 else
2801#endif 3930#endif
2802 signal (w->signum, SIG_DFL); 3931 signal (w->signum, SIG_DFL);
2803 } 3932 }
2804 3933
2805 EV_FREQUENT_CHECK; 3934 EV_FREQUENT_CHECK;
2806} 3935}
2807 3936
3937#endif
3938
3939#if EV_CHILD_ENABLE
3940
2808void 3941void
2809ev_child_start (EV_P_ ev_child *w) 3942ev_child_start (EV_P_ ev_child *w) EV_THROW
2810{ 3943{
2811#if EV_MULTIPLICITY 3944#if EV_MULTIPLICITY
2812 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3945 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2813#endif 3946#endif
2814 if (expect_false (ev_is_active (w))) 3947 if (expect_false (ev_is_active (w)))
2815 return; 3948 return;
2816 3949
2817 EV_FREQUENT_CHECK; 3950 EV_FREQUENT_CHECK;
2818 3951
2819 ev_start (EV_A_ (W)w, 1); 3952 ev_start (EV_A_ (W)w, 1);
2820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3953 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2821 3954
2822 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2823} 3956}
2824 3957
2825void 3958void
2826ev_child_stop (EV_P_ ev_child *w) 3959ev_child_stop (EV_P_ ev_child *w) EV_THROW
2827{ 3960{
2828 clear_pending (EV_A_ (W)w); 3961 clear_pending (EV_A_ (W)w);
2829 if (expect_false (!ev_is_active (w))) 3962 if (expect_false (!ev_is_active (w)))
2830 return; 3963 return;
2831 3964
2832 EV_FREQUENT_CHECK; 3965 EV_FREQUENT_CHECK;
2833 3966
2834 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3967 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2835 ev_stop (EV_A_ (W)w); 3968 ev_stop (EV_A_ (W)w);
2836 3969
2837 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2838} 3971}
3972
3973#endif
2839 3974
2840#if EV_STAT_ENABLE 3975#if EV_STAT_ENABLE
2841 3976
2842# ifdef _WIN32 3977# ifdef _WIN32
2843# undef lstat 3978# undef lstat
… …
2849#define MIN_STAT_INTERVAL 0.1074891 3984#define MIN_STAT_INTERVAL 0.1074891
2850 3985
2851static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3986static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2852 3987
2853#if EV_USE_INOTIFY 3988#if EV_USE_INOTIFY
2854# define EV_INOTIFY_BUFSIZE 8192 3989
3990/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3991# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2855 3992
2856static void noinline 3993static void noinline
2857infy_add (EV_P_ ev_stat *w) 3994infy_add (EV_P_ ev_stat *w)
2858{ 3995{
2859 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); 3996 w->wd = inotify_add_watch (fs_fd, w->path,
3997 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3998 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3999 | IN_DONT_FOLLOW | IN_MASK_ADD);
2860 4000
2861 if (w->wd >= 0) 4001 if (w->wd >= 0)
2862 { 4002 {
2863 struct statfs sfs; 4003 struct statfs sfs;
2864 4004
… …
2868 4008
2869 if (!fs_2625) 4009 if (!fs_2625)
2870 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4010 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2871 else if (!statfs (w->path, &sfs) 4011 else if (!statfs (w->path, &sfs)
2872 && (sfs.f_type == 0x1373 /* devfs */ 4012 && (sfs.f_type == 0x1373 /* devfs */
4013 || sfs.f_type == 0x4006 /* fat */
4014 || sfs.f_type == 0x4d44 /* msdos */
2873 || sfs.f_type == 0xEF53 /* ext2/3 */ 4015 || sfs.f_type == 0xEF53 /* ext2/3 */
4016 || sfs.f_type == 0x72b6 /* jffs2 */
4017 || sfs.f_type == 0x858458f6 /* ramfs */
4018 || sfs.f_type == 0x5346544e /* ntfs */
2874 || sfs.f_type == 0x3153464a /* jfs */ 4019 || sfs.f_type == 0x3153464a /* jfs */
4020 || sfs.f_type == 0x9123683e /* btrfs */
2875 || sfs.f_type == 0x52654973 /* reiser3 */ 4021 || sfs.f_type == 0x52654973 /* reiser3 */
2876 || sfs.f_type == 0x01021994 /* tempfs */ 4022 || sfs.f_type == 0x01021994 /* tmpfs */
2877 || sfs.f_type == 0x58465342 /* xfs */)) 4023 || sfs.f_type == 0x58465342 /* xfs */))
2878 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4024 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2879 else 4025 else
2880 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4026 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2881 } 4027 }
… …
2902 if (!pend || pend == path) 4048 if (!pend || pend == path)
2903 break; 4049 break;
2904 4050
2905 *pend = 0; 4051 *pend = 0;
2906 w->wd = inotify_add_watch (fs_fd, path, mask); 4052 w->wd = inotify_add_watch (fs_fd, path, mask);
2907 } 4053 }
2908 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4054 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2909 } 4055 }
2910 } 4056 }
2911 4057
2912 if (w->wd >= 0) 4058 if (w->wd >= 0)
2913 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4059 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2914 4060
2915 /* now re-arm timer, if required */ 4061 /* now re-arm timer, if required */
2916 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4062 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2917 ev_timer_again (EV_A_ &w->timer); 4063 ev_timer_again (EV_A_ &w->timer);
2918 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4064 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2926 4072
2927 if (wd < 0) 4073 if (wd < 0)
2928 return; 4074 return;
2929 4075
2930 w->wd = -2; 4076 w->wd = -2;
2931 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4077 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2932 wlist_del (&fs_hash [slot].head, (WL)w); 4078 wlist_del (&fs_hash [slot].head, (WL)w);
2933 4079
2934 /* remove this watcher, if others are watching it, they will rearm */ 4080 /* remove this watcher, if others are watching it, they will rearm */
2935 inotify_rm_watch (fs_fd, wd); 4081 inotify_rm_watch (fs_fd, wd);
2936} 4082}
… …
2938static void noinline 4084static void noinline
2939infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4085infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2940{ 4086{
2941 if (slot < 0) 4087 if (slot < 0)
2942 /* overflow, need to check for all hash slots */ 4088 /* overflow, need to check for all hash slots */
2943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4089 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2944 infy_wd (EV_A_ slot, wd, ev); 4090 infy_wd (EV_A_ slot, wd, ev);
2945 else 4091 else
2946 { 4092 {
2947 WL w_; 4093 WL w_;
2948 4094
2949 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4095 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2950 { 4096 {
2951 ev_stat *w = (ev_stat *)w_; 4097 ev_stat *w = (ev_stat *)w_;
2952 w_ = w_->next; /* lets us remove this watcher and all before it */ 4098 w_ = w_->next; /* lets us remove this watcher and all before it */
2953 4099
2954 if (w->wd == wd || wd == -1) 4100 if (w->wd == wd || wd == -1)
2955 { 4101 {
2956 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4102 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2957 { 4103 {
2958 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4104 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2959 w->wd = -1; 4105 w->wd = -1;
2960 infy_add (EV_A_ w); /* re-add, no matter what */ 4106 infy_add (EV_A_ w); /* re-add, no matter what */
2961 } 4107 }
2962 4108
2963 stat_timer_cb (EV_A_ &w->timer, 0); 4109 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2968 4114
2969static void 4115static void
2970infy_cb (EV_P_ ev_io *w, int revents) 4116infy_cb (EV_P_ ev_io *w, int revents)
2971{ 4117{
2972 char buf [EV_INOTIFY_BUFSIZE]; 4118 char buf [EV_INOTIFY_BUFSIZE];
2973 struct inotify_event *ev = (struct inotify_event *)buf;
2974 int ofs; 4119 int ofs;
2975 int len = read (fs_fd, buf, sizeof (buf)); 4120 int len = read (fs_fd, buf, sizeof (buf));
2976 4121
2977 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4122 for (ofs = 0; ofs < len; )
4123 {
4124 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2978 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4125 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4126 ofs += sizeof (struct inotify_event) + ev->len;
4127 }
2979} 4128}
2980 4129
2981inline_size void 4130inline_size void ecb_cold
2982check_2625 (EV_P) 4131ev_check_2625 (EV_P)
2983{ 4132{
2984 /* kernels < 2.6.25 are borked 4133 /* kernels < 2.6.25 are borked
2985 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4134 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2986 */ 4135 */
2987 struct utsname buf; 4136 if (ev_linux_version () < 0x020619)
2988 int major, minor, micro;
2989
2990 if (uname (&buf))
2991 return;
2992
2993 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2994 return;
2995
2996 if (major < 2
2997 || (major == 2 && minor < 6)
2998 || (major == 2 && minor == 6 && micro < 25))
2999 return; 4137 return;
3000 4138
3001 fs_2625 = 1; 4139 fs_2625 = 1;
3002} 4140}
3003 4141
3004inline_size int 4142inline_size int
3005infy_newfd (void) 4143infy_newfd (void)
3006{ 4144{
3007#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4145#if defined IN_CLOEXEC && defined IN_NONBLOCK
3008 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4146 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3009 if (fd >= 0) 4147 if (fd >= 0)
3010 return fd; 4148 return fd;
3011#endif 4149#endif
3012 return inotify_init (); 4150 return inotify_init ();
… …
3018 if (fs_fd != -2) 4156 if (fs_fd != -2)
3019 return; 4157 return;
3020 4158
3021 fs_fd = -1; 4159 fs_fd = -1;
3022 4160
3023 check_2625 (EV_A); 4161 ev_check_2625 (EV_A);
3024 4162
3025 fs_fd = infy_newfd (); 4163 fs_fd = infy_newfd ();
3026 4164
3027 if (fs_fd >= 0) 4165 if (fs_fd >= 0)
3028 { 4166 {
… …
3053 ev_io_set (&fs_w, fs_fd, EV_READ); 4191 ev_io_set (&fs_w, fs_fd, EV_READ);
3054 ev_io_start (EV_A_ &fs_w); 4192 ev_io_start (EV_A_ &fs_w);
3055 ev_unref (EV_A); 4193 ev_unref (EV_A);
3056 } 4194 }
3057 4195
3058 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4196 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3059 { 4197 {
3060 WL w_ = fs_hash [slot].head; 4198 WL w_ = fs_hash [slot].head;
3061 fs_hash [slot].head = 0; 4199 fs_hash [slot].head = 0;
3062 4200
3063 while (w_) 4201 while (w_)
… …
3087#else 4225#else
3088# define EV_LSTAT(p,b) lstat (p, b) 4226# define EV_LSTAT(p,b) lstat (p, b)
3089#endif 4227#endif
3090 4228
3091void 4229void
3092ev_stat_stat (EV_P_ ev_stat *w) 4230ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3093{ 4231{
3094 if (lstat (w->path, &w->attr) < 0) 4232 if (lstat (w->path, &w->attr) < 0)
3095 w->attr.st_nlink = 0; 4233 w->attr.st_nlink = 0;
3096 else if (!w->attr.st_nlink) 4234 else if (!w->attr.st_nlink)
3097 w->attr.st_nlink = 1; 4235 w->attr.st_nlink = 1;
… …
3100static void noinline 4238static void noinline
3101stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4239stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3102{ 4240{
3103 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4241 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3104 4242
3105 /* we copy this here each the time so that */ 4243 ev_statdata prev = w->attr;
3106 /* prev has the old value when the callback gets invoked */
3107 w->prev = w->attr;
3108 ev_stat_stat (EV_A_ w); 4244 ev_stat_stat (EV_A_ w);
3109 4245
3110 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4246 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3111 if ( 4247 if (
3112 w->prev.st_dev != w->attr.st_dev 4248 prev.st_dev != w->attr.st_dev
3113 || w->prev.st_ino != w->attr.st_ino 4249 || prev.st_ino != w->attr.st_ino
3114 || w->prev.st_mode != w->attr.st_mode 4250 || prev.st_mode != w->attr.st_mode
3115 || w->prev.st_nlink != w->attr.st_nlink 4251 || prev.st_nlink != w->attr.st_nlink
3116 || w->prev.st_uid != w->attr.st_uid 4252 || prev.st_uid != w->attr.st_uid
3117 || w->prev.st_gid != w->attr.st_gid 4253 || prev.st_gid != w->attr.st_gid
3118 || w->prev.st_rdev != w->attr.st_rdev 4254 || prev.st_rdev != w->attr.st_rdev
3119 || w->prev.st_size != w->attr.st_size 4255 || prev.st_size != w->attr.st_size
3120 || w->prev.st_atime != w->attr.st_atime 4256 || prev.st_atime != w->attr.st_atime
3121 || w->prev.st_mtime != w->attr.st_mtime 4257 || prev.st_mtime != w->attr.st_mtime
3122 || w->prev.st_ctime != w->attr.st_ctime 4258 || prev.st_ctime != w->attr.st_ctime
3123 ) { 4259 ) {
4260 /* we only update w->prev on actual differences */
4261 /* in case we test more often than invoke the callback, */
4262 /* to ensure that prev is always different to attr */
4263 w->prev = prev;
4264
3124 #if EV_USE_INOTIFY 4265 #if EV_USE_INOTIFY
3125 if (fs_fd >= 0) 4266 if (fs_fd >= 0)
3126 { 4267 {
3127 infy_del (EV_A_ w); 4268 infy_del (EV_A_ w);
3128 infy_add (EV_A_ w); 4269 infy_add (EV_A_ w);
… …
3133 ev_feed_event (EV_A_ w, EV_STAT); 4274 ev_feed_event (EV_A_ w, EV_STAT);
3134 } 4275 }
3135} 4276}
3136 4277
3137void 4278void
3138ev_stat_start (EV_P_ ev_stat *w) 4279ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3139{ 4280{
3140 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3141 return; 4282 return;
3142 4283
3143 ev_stat_stat (EV_A_ w); 4284 ev_stat_stat (EV_A_ w);
… …
3164 4305
3165 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3166} 4307}
3167 4308
3168void 4309void
3169ev_stat_stop (EV_P_ ev_stat *w) 4310ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3170{ 4311{
3171 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3172 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3173 return; 4314 return;
3174 4315
… …
3190} 4331}
3191#endif 4332#endif
3192 4333
3193#if EV_IDLE_ENABLE 4334#if EV_IDLE_ENABLE
3194void 4335void
3195ev_idle_start (EV_P_ ev_idle *w) 4336ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3196{ 4337{
3197 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3198 return; 4339 return;
3199 4340
3200 pri_adjust (EV_A_ (W)w); 4341 pri_adjust (EV_A_ (W)w);
… …
3213 4354
3214 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3215} 4356}
3216 4357
3217void 4358void
3218ev_idle_stop (EV_P_ ev_idle *w) 4359ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3219{ 4360{
3220 clear_pending (EV_A_ (W)w); 4361 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4362 if (expect_false (!ev_is_active (w)))
3222 return; 4363 return;
3223 4364
… …
3235 4376
3236 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3237} 4378}
3238#endif 4379#endif
3239 4380
4381#if EV_PREPARE_ENABLE
3240void 4382void
3241ev_prepare_start (EV_P_ ev_prepare *w) 4383ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3242{ 4384{
3243 if (expect_false (ev_is_active (w))) 4385 if (expect_false (ev_is_active (w)))
3244 return; 4386 return;
3245 4387
3246 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
… …
3251 4393
3252 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3253} 4395}
3254 4396
3255void 4397void
3256ev_prepare_stop (EV_P_ ev_prepare *w) 4398ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3257{ 4399{
3258 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
3259 if (expect_false (!ev_is_active (w))) 4401 if (expect_false (!ev_is_active (w)))
3260 return; 4402 return;
3261 4403
… …
3270 4412
3271 ev_stop (EV_A_ (W)w); 4413 ev_stop (EV_A_ (W)w);
3272 4414
3273 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
3274} 4416}
4417#endif
3275 4418
4419#if EV_CHECK_ENABLE
3276void 4420void
3277ev_check_start (EV_P_ ev_check *w) 4421ev_check_start (EV_P_ ev_check *w) EV_THROW
3278{ 4422{
3279 if (expect_false (ev_is_active (w))) 4423 if (expect_false (ev_is_active (w)))
3280 return; 4424 return;
3281 4425
3282 EV_FREQUENT_CHECK; 4426 EV_FREQUENT_CHECK;
… …
3287 4431
3288 EV_FREQUENT_CHECK; 4432 EV_FREQUENT_CHECK;
3289} 4433}
3290 4434
3291void 4435void
3292ev_check_stop (EV_P_ ev_check *w) 4436ev_check_stop (EV_P_ ev_check *w) EV_THROW
3293{ 4437{
3294 clear_pending (EV_A_ (W)w); 4438 clear_pending (EV_A_ (W)w);
3295 if (expect_false (!ev_is_active (w))) 4439 if (expect_false (!ev_is_active (w)))
3296 return; 4440 return;
3297 4441
… …
3306 4450
3307 ev_stop (EV_A_ (W)w); 4451 ev_stop (EV_A_ (W)w);
3308 4452
3309 EV_FREQUENT_CHECK; 4453 EV_FREQUENT_CHECK;
3310} 4454}
4455#endif
3311 4456
3312#if EV_EMBED_ENABLE 4457#if EV_EMBED_ENABLE
3313void noinline 4458void noinline
3314ev_embed_sweep (EV_P_ ev_embed *w) 4459ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3315{ 4460{
3316 ev_loop (w->other, EVLOOP_NONBLOCK); 4461 ev_run (w->other, EVRUN_NOWAIT);
3317} 4462}
3318 4463
3319static void 4464static void
3320embed_io_cb (EV_P_ ev_io *io, int revents) 4465embed_io_cb (EV_P_ ev_io *io, int revents)
3321{ 4466{
3322 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4467 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3323 4468
3324 if (ev_cb (w)) 4469 if (ev_cb (w))
3325 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4470 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3326 else 4471 else
3327 ev_loop (w->other, EVLOOP_NONBLOCK); 4472 ev_run (w->other, EVRUN_NOWAIT);
3328} 4473}
3329 4474
3330static void 4475static void
3331embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4476embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3332{ 4477{
… …
3336 EV_P = w->other; 4481 EV_P = w->other;
3337 4482
3338 while (fdchangecnt) 4483 while (fdchangecnt)
3339 { 4484 {
3340 fd_reify (EV_A); 4485 fd_reify (EV_A);
3341 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4486 ev_run (EV_A_ EVRUN_NOWAIT);
3342 } 4487 }
3343 } 4488 }
3344} 4489}
3345 4490
3346static void 4491static void
… …
3352 4497
3353 { 4498 {
3354 EV_P = w->other; 4499 EV_P = w->other;
3355 4500
3356 ev_loop_fork (EV_A); 4501 ev_loop_fork (EV_A);
3357 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4502 ev_run (EV_A_ EVRUN_NOWAIT);
3358 } 4503 }
3359 4504
3360 ev_embed_start (EV_A_ w); 4505 ev_embed_start (EV_A_ w);
3361} 4506}
3362 4507
… …
3367 ev_idle_stop (EV_A_ idle); 4512 ev_idle_stop (EV_A_ idle);
3368} 4513}
3369#endif 4514#endif
3370 4515
3371void 4516void
3372ev_embed_start (EV_P_ ev_embed *w) 4517ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3373{ 4518{
3374 if (expect_false (ev_is_active (w))) 4519 if (expect_false (ev_is_active (w)))
3375 return; 4520 return;
3376 4521
3377 { 4522 {
… …
3398 4543
3399 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3400} 4545}
3401 4546
3402void 4547void
3403ev_embed_stop (EV_P_ ev_embed *w) 4548ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3404{ 4549{
3405 clear_pending (EV_A_ (W)w); 4550 clear_pending (EV_A_ (W)w);
3406 if (expect_false (!ev_is_active (w))) 4551 if (expect_false (!ev_is_active (w)))
3407 return; 4552 return;
3408 4553
… …
3410 4555
3411 ev_io_stop (EV_A_ &w->io); 4556 ev_io_stop (EV_A_ &w->io);
3412 ev_prepare_stop (EV_A_ &w->prepare); 4557 ev_prepare_stop (EV_A_ &w->prepare);
3413 ev_fork_stop (EV_A_ &w->fork); 4558 ev_fork_stop (EV_A_ &w->fork);
3414 4559
4560 ev_stop (EV_A_ (W)w);
4561
3415 EV_FREQUENT_CHECK; 4562 EV_FREQUENT_CHECK;
3416} 4563}
3417#endif 4564#endif
3418 4565
3419#if EV_FORK_ENABLE 4566#if EV_FORK_ENABLE
3420void 4567void
3421ev_fork_start (EV_P_ ev_fork *w) 4568ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3422{ 4569{
3423 if (expect_false (ev_is_active (w))) 4570 if (expect_false (ev_is_active (w)))
3424 return; 4571 return;
3425 4572
3426 EV_FREQUENT_CHECK; 4573 EV_FREQUENT_CHECK;
… …
3431 4578
3432 EV_FREQUENT_CHECK; 4579 EV_FREQUENT_CHECK;
3433} 4580}
3434 4581
3435void 4582void
3436ev_fork_stop (EV_P_ ev_fork *w) 4583ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3437{ 4584{
3438 clear_pending (EV_A_ (W)w); 4585 clear_pending (EV_A_ (W)w);
3439 if (expect_false (!ev_is_active (w))) 4586 if (expect_false (!ev_is_active (w)))
3440 return; 4587 return;
3441 4588
… …
3452 4599
3453 EV_FREQUENT_CHECK; 4600 EV_FREQUENT_CHECK;
3454} 4601}
3455#endif 4602#endif
3456 4603
4604#if EV_CLEANUP_ENABLE
4605void
4606ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4607{
4608 if (expect_false (ev_is_active (w)))
4609 return;
4610
4611 EV_FREQUENT_CHECK;
4612
4613 ev_start (EV_A_ (W)w, ++cleanupcnt);
4614 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4615 cleanups [cleanupcnt - 1] = w;
4616
4617 /* cleanup watchers should never keep a refcount on the loop */
4618 ev_unref (EV_A);
4619 EV_FREQUENT_CHECK;
4620}
4621
4622void
4623ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4624{
4625 clear_pending (EV_A_ (W)w);
4626 if (expect_false (!ev_is_active (w)))
4627 return;
4628
4629 EV_FREQUENT_CHECK;
4630 ev_ref (EV_A);
4631
4632 {
4633 int active = ev_active (w);
4634
4635 cleanups [active - 1] = cleanups [--cleanupcnt];
4636 ev_active (cleanups [active - 1]) = active;
4637 }
4638
4639 ev_stop (EV_A_ (W)w);
4640
4641 EV_FREQUENT_CHECK;
4642}
4643#endif
4644
3457#if EV_ASYNC_ENABLE 4645#if EV_ASYNC_ENABLE
3458void 4646void
3459ev_async_start (EV_P_ ev_async *w) 4647ev_async_start (EV_P_ ev_async *w) EV_THROW
3460{ 4648{
3461 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3462 return; 4650 return;
4651
4652 w->sent = 0;
3463 4653
3464 evpipe_init (EV_A); 4654 evpipe_init (EV_A);
3465 4655
3466 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
3467 4657
… …
3471 4661
3472 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
3473} 4663}
3474 4664
3475void 4665void
3476ev_async_stop (EV_P_ ev_async *w) 4666ev_async_stop (EV_P_ ev_async *w) EV_THROW
3477{ 4667{
3478 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
3479 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
3480 return; 4670 return;
3481 4671
… …
3492 4682
3493 EV_FREQUENT_CHECK; 4683 EV_FREQUENT_CHECK;
3494} 4684}
3495 4685
3496void 4686void
3497ev_async_send (EV_P_ ev_async *w) 4687ev_async_send (EV_P_ ev_async *w) EV_THROW
3498{ 4688{
3499 w->sent = 1; 4689 w->sent = 1;
3500 evpipe_write (EV_A_ &async_pending); 4690 evpipe_write (EV_A_ &async_pending);
3501} 4691}
3502#endif 4692#endif
… …
3539 4729
3540 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4730 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3541} 4731}
3542 4732
3543void 4733void
3544ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4734ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3545{ 4735{
3546 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4736 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3547 4737
3548 if (expect_false (!once)) 4738 if (expect_false (!once))
3549 { 4739 {
3550 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4740 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3551 return; 4741 return;
3552 } 4742 }
3553 4743
3554 once->cb = cb; 4744 once->cb = cb;
3555 once->arg = arg; 4745 once->arg = arg;
… …
3570} 4760}
3571 4761
3572/*****************************************************************************/ 4762/*****************************************************************************/
3573 4763
3574#if EV_WALK_ENABLE 4764#if EV_WALK_ENABLE
3575void 4765void ecb_cold
3576ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4766ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3577{ 4767{
3578 int i, j; 4768 int i, j;
3579 ev_watcher_list *wl, *wn; 4769 ev_watcher_list *wl, *wn;
3580 4770
3581 if (types & (EV_IO | EV_EMBED)) 4771 if (types & (EV_IO | EV_EMBED))
… …
3624 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4814 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3625#endif 4815#endif
3626 4816
3627#if EV_IDLE_ENABLE 4817#if EV_IDLE_ENABLE
3628 if (types & EV_IDLE) 4818 if (types & EV_IDLE)
3629 for (j = NUMPRI; i--; ) 4819 for (j = NUMPRI; j--; )
3630 for (i = idlecnt [j]; i--; ) 4820 for (i = idlecnt [j]; i--; )
3631 cb (EV_A_ EV_IDLE, idles [j][i]); 4821 cb (EV_A_ EV_IDLE, idles [j][i]);
3632#endif 4822#endif
3633 4823
3634#if EV_FORK_ENABLE 4824#if EV_FORK_ENABLE
… …
3642 if (types & EV_ASYNC) 4832 if (types & EV_ASYNC)
3643 for (i = asynccnt; i--; ) 4833 for (i = asynccnt; i--; )
3644 cb (EV_A_ EV_ASYNC, asyncs [i]); 4834 cb (EV_A_ EV_ASYNC, asyncs [i]);
3645#endif 4835#endif
3646 4836
4837#if EV_PREPARE_ENABLE
3647 if (types & EV_PREPARE) 4838 if (types & EV_PREPARE)
3648 for (i = preparecnt; i--; ) 4839 for (i = preparecnt; i--; )
3649#if EV_EMBED_ENABLE 4840# if EV_EMBED_ENABLE
3650 if (ev_cb (prepares [i]) != embed_prepare_cb) 4841 if (ev_cb (prepares [i]) != embed_prepare_cb)
3651#endif 4842# endif
3652 cb (EV_A_ EV_PREPARE, prepares [i]); 4843 cb (EV_A_ EV_PREPARE, prepares [i]);
4844#endif
3653 4845
4846#if EV_CHECK_ENABLE
3654 if (types & EV_CHECK) 4847 if (types & EV_CHECK)
3655 for (i = checkcnt; i--; ) 4848 for (i = checkcnt; i--; )
3656 cb (EV_A_ EV_CHECK, checks [i]); 4849 cb (EV_A_ EV_CHECK, checks [i]);
4850#endif
3657 4851
4852#if EV_SIGNAL_ENABLE
3658 if (types & EV_SIGNAL) 4853 if (types & EV_SIGNAL)
3659 for (i = 0; i < EV_NSIG - 1; ++i) 4854 for (i = 0; i < EV_NSIG - 1; ++i)
3660 for (wl = signals [i].head; wl; ) 4855 for (wl = signals [i].head; wl; )
3661 { 4856 {
3662 wn = wl->next; 4857 wn = wl->next;
3663 cb (EV_A_ EV_SIGNAL, wl); 4858 cb (EV_A_ EV_SIGNAL, wl);
3664 wl = wn; 4859 wl = wn;
3665 } 4860 }
4861#endif
3666 4862
4863#if EV_CHILD_ENABLE
3667 if (types & EV_CHILD) 4864 if (types & EV_CHILD)
3668 for (i = EV_PID_HASHSIZE; i--; ) 4865 for (i = (EV_PID_HASHSIZE); i--; )
3669 for (wl = childs [i]; wl; ) 4866 for (wl = childs [i]; wl; )
3670 { 4867 {
3671 wn = wl->next; 4868 wn = wl->next;
3672 cb (EV_A_ EV_CHILD, wl); 4869 cb (EV_A_ EV_CHILD, wl);
3673 wl = wn; 4870 wl = wn;
3674 } 4871 }
4872#endif
3675/* EV_STAT 0x00001000 /* stat data changed */ 4873/* EV_STAT 0x00001000 /* stat data changed */
3676/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4874/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3677} 4875}
3678#endif 4876#endif
3679 4877
3680#if EV_MULTIPLICITY 4878#if EV_MULTIPLICITY
3681 #include "ev_wrap.h" 4879 #include "ev_wrap.h"
3682#endif 4880#endif
3683 4881
3684#ifdef __cplusplus
3685}
3686#endif
3687

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