ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.321 by root, Thu Dec 31 06:50:17 2009 UTC vs.
Revision 1.469 by root, Fri Sep 5 16:21:19 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"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
175#endif 197#endif
176 198
177#ifndef _WIN32 199#ifndef _WIN32
178# include <sys/time.h> 200# include <sys/time.h>
179# include <sys/wait.h> 201# include <sys/wait.h>
180# include <unistd.h> 202# include <unistd.h>
181#else 203#else
182# include <io.h> 204# include <io.h>
183# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
184# include <windows.h> 207# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
187# endif 210# endif
211# undef EV_AVOID_STDIO
188#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
189 221
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
191 223
192/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 247#endif
216# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
217#endif 251#endif
218 252
219#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 256# else
223# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
224# endif 258# endif
225#endif 259#endif
226 260
227#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 264# else
231# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
232# endif 266# endif
233#endif 267#endif
234 268
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 271#endif
238 272
239#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 276# else
243# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
244# endif 278# endif
245#endif 279#endif
246 280
247#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 283#endif
250 284
251#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
252# ifdef _WIN32 286# ifdef _WIN32
253# define EV_USE_POLL 0 287# define EV_USE_POLL 0
254# else 288# else
255# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 290# endif
257#endif 291#endif
258 292
259#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 296# else
263# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
264# endif 298# endif
265#endif 299#endif
266 300
… …
272# define EV_USE_PORT 0 306# define EV_USE_PORT 0
273#endif 307#endif
274 308
275#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 312# else
279# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
280# endif 314# endif
281#endif 315#endif
282 316
283#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 318# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 319#endif
290 320
291#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 322# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 323#endif
298 324
299#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 328# else
303# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
304# endif 330# endif
305#endif 331#endif
306 332
307#ifndef EV_USE_SIGNALFD 333#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 335# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 336# else
311# define EV_USE_SIGNALFD 0 337# define EV_USE_SIGNALFD 0
312# endif 338# endif
313#endif 339#endif
314 340
… …
317# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
319#endif 345#endif
320 346
321#ifndef EV_VERIFY 347#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 349#endif
324 350
325#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 353#endif
328 354
329#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
330# 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
331#endif 373#endif
332 374
333/* 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, */
334/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 378# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
341# else 383# else
… …
360# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
362#endif 404#endif
363 405
364#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 409# include <sys/select.h>
367# endif 410# endif
368#endif 411#endif
369 412
370#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 414# include <sys/statfs.h>
373# include <sys/inotify.h> 415# include <sys/inotify.h>
374/* 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 */
375# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
378# endif 420# endif
379#endif
380
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif 421#endif
384 422
385#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
386/* 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 */
387# include <stdint.h> 425# include <stdint.h>
… …
393# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
394# else 432# else
395# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
396# endif 434# endif
397# endif 435# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 437#endif
406 438
407#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
408/* 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 */
409# include <stdint.h> 441# include <stdint.h>
… …
415# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
416# else 448# else
417# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
418# endif 450# endif
419# endif 451# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
424 453
425struct signalfd_siginfo 454struct signalfd_siginfo
426{ 455{
427 uint32_t ssi_signo; 456 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
429}; 458};
430# ifdef __cplusplus
431}
432# endif 459#endif
433#endif
434
435 460
436/**/ 461/**/
437 462
438#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 465#else
441# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
442#endif 467#endif
443 468
444/* 469/*
445 * This is used to avoid floating point rounding problems. 470 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 471 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 472 */
452#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 */
453 475
454#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) */
455#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) */
456 478
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;
457#if __GNUC__ >= 4 537 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
459# 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
460#else 553#else
461# define expect(expr,value) (expr) 554 #include <inttypes.h>
462# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
464# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
465# 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
466#endif 568 #endif
569#endif
467 570
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#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated)
812#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif
815
816#define ecb_noinline ecb_attribute ((__noinline__))
817#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__))
820
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
822#if ECB_C11
823 #define ecb_noreturn _Noreturn
824#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_artificial ecb_attribute ((__artificial__))
830 #define ecb_hot ecb_attribute ((__hot__))
831 #define ecb_cold ecb_attribute ((__cold__))
832#else
833 #define ecb_artificial
834 #define ecb_hot
835 #define ecb_cold
836#endif
837
838/* put around conditional expressions if you are very sure that the */
839/* expression is mostly true or mostly false. note that these return */
840/* booleans, not the expression. */
468#define expect_false(expr) expect ((expr) != 0, 0) 841#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
469#define expect_true(expr) expect ((expr) != 0, 1) 842#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
843/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr)
846
847/* count trailing zero bits and count # of one bits */
848#if ECB_GCC_VERSION(3,4)
849 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */
856#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
858 ecb_function_ int
859 ecb_ctz32 (uint32_t x)
860 {
861 int r = 0;
862
863 x &= ~x + 1; /* this isolates the lowest bit */
864
865#if ECB_branchless_on_i386
866 r += !!(x & 0xaaaaaaaa) << 0;
867 r += !!(x & 0xcccccccc) << 1;
868 r += !!(x & 0xf0f0f0f0) << 2;
869 r += !!(x & 0xff00ff00) << 3;
870 r += !!(x & 0xffff0000) << 4;
871#else
872 if (x & 0xaaaaaaaa) r += 1;
873 if (x & 0xcccccccc) r += 2;
874 if (x & 0xf0f0f0f0) r += 4;
875 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16;
877#endif
878
879 return r;
880 }
881
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
883 ecb_function_ int
884 ecb_ctz64 (uint64_t x)
885 {
886 int shift = x & 0xffffffffU ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift;
888 }
889
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
891 ecb_function_ int
892 ecb_popcount32 (uint32_t x)
893 {
894 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101;
898
899 return x >> 24;
900 }
901
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
903 ecb_function_ int ecb_ld32 (uint32_t x)
904 {
905 int r = 0;
906
907 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; }
912
913 return r;
914 }
915
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
917 ecb_function_ int ecb_ld64 (uint64_t x)
918 {
919 int r = 0;
920
921 if (x >> 32) { x >>= 32; r += 32; }
922
923 return r + ecb_ld32 (x);
924 }
925#endif
926
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
928ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
930ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
931
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
934{
935 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937}
938
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
941{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8);
946
947 return x;
948}
949
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
952{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
957 x = ( x >> 16 ) | ( x << 16);
958
959 return x;
960}
961
962/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
965ecb_function_ int
966ecb_popcount64 (uint64_t x)
967{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969}
970
971ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
972ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
973ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
974ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
975ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
976ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
977ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
978ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
988
989#if ECB_GCC_VERSION(4,3)
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
991 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #define ecb_bswap64(x) __builtin_bswap64 (x)
993#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
995 ecb_function_ uint16_t
996 ecb_bswap16 (uint16_t x)
997 {
998 return ecb_rotl16 (x, 8);
999 }
1000
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1002 ecb_function_ uint32_t
1003 ecb_bswap32 (uint32_t x)
1004 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 }
1007
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1009 ecb_function_ uint64_t
1010 ecb_bswap64 (uint64_t x)
1011 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 }
1014#endif
1015
1016#if ECB_GCC_VERSION(4,5)
1017 #define ecb_unreachable() __builtin_unreachable ()
1018#else
1019 /* this seems to work fine, but gcc always emits a warning for it :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1021 ecb_inline void ecb_unreachable (void) { }
1022#endif
1023
1024/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1028ecb_inline unsigned char
1029ecb_byteorder_helper (void)
1030{
1031 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */
1035 /* is to avoid it in all cases, at least on common architectures */
1036 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1040 return 0x44;
1041#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1042 return 0x11;
1043#else
1044 union
1045 {
1046 uint32_t i;
1047 uint8_t c;
1048 } u = { 0x11223344 };
1049 return u.c;
1050#endif
1051}
1052
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1054ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1056ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1057
1058#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1060#else
1061 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1062#endif
1063
1064#if __cplusplus
1065 template<typename T>
1066 static inline T ecb_div_rd (T val, T div)
1067 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 }
1070 template<typename T>
1071 static inline T ecb_div_ru (T val, T div)
1072 {
1073 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1074 }
1075#else
1076 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1077 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1078#endif
1079
1080#if ecb_cplusplus_does_not_suck
1081 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1082 template<typename T, int N>
1083 static inline int ecb_array_length (const T (&arr)[N])
1084 {
1085 return N;
1086 }
1087#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif
1090
1091/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093
1094/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \
1097 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \
1102 || defined __alpha__ \
1103 || defined __hppa__ \
1104 || defined __ia64__ \
1105 || defined __m68k__ \
1106 || defined __m88k__ \
1107 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__
1111 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */
1113#else
1114 #define ECB_STDFP 0
1115#endif
1116
1117#ifndef ECB_NO_LIBM
1118
1119 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1120
1121 /* only the oldest of old doesn't have this one. solaris. */
1122 #ifdef INFINITY
1123 #define ECB_INFINITY INFINITY
1124 #else
1125 #define ECB_INFINITY HUGE_VAL
1126 #endif
1127
1128 #ifdef NAN
1129 #define ECB_NAN NAN
1130 #else
1131 #define ECB_NAN ECB_INFINITY
1132 #endif
1133
1134 /* converts an ieee half/binary16 to a float */
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1136 ecb_function_ float
1137 ecb_binary16_to_float (uint16_t x)
1138 {
1139 int e = (x >> 10) & 0x1f;
1140 int m = x & 0x3ff;
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150
1151 /* convert a float to ieee single/binary32 */
1152 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1153 ecb_function_ uint32_t
1154 ecb_float_to_binary32 (float x)
1155 {
1156 uint32_t r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* slow emulation, works for anything but -0 */
1162 uint32_t m;
1163 int e;
1164
1165 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU;
1169
1170 m = frexpf (x, &e) * 0x1000000U;
1171
1172 r = m & 0x80000000U;
1173
1174 if (r)
1175 m = -m;
1176
1177 if (e <= -126)
1178 {
1179 m &= 0xffffffU;
1180 m >>= (-125 - e);
1181 e = -126;
1182 }
1183
1184 r |= (e + 126) << 23;
1185 r |= m & 0x7fffffU;
1186 #endif
1187
1188 return r;
1189 }
1190
1191 /* converts an ieee single/binary32 to a float */
1192 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1193 ecb_function_ float
1194 ecb_binary32_to_float (uint32_t x)
1195 {
1196 float r;
1197
1198 #if ECB_STDFP
1199 memcpy (&r, &x, 4);
1200 #else
1201 /* emulation, only works for normals and subnormals and +0 */
1202 int neg = x >> 31;
1203 int e = (x >> 23) & 0xffU;
1204
1205 x &= 0x7fffffU;
1206
1207 if (e)
1208 x |= 0x800000U;
1209 else
1210 e = 1;
1211
1212 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1214
1215 r = neg ? -r : r;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* convert a double to ieee double/binary64 */
1222 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1223 ecb_function_ uint64_t
1224 ecb_double_to_binary64 (double x)
1225 {
1226 uint64_t r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* slow emulation, works for anything but -0 */
1232 uint64_t m;
1233 int e;
1234
1235 if (x == 0e0 ) return 0x0000000000000000U;
1236 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1237 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1238 if (x != x ) return 0X7ff7ffffffffffffU;
1239
1240 m = frexp (x, &e) * 0x20000000000000U;
1241
1242 r = m & 0x8000000000000000;;
1243
1244 if (r)
1245 m = -m;
1246
1247 if (e <= -1022)
1248 {
1249 m &= 0x1fffffffffffffU;
1250 m >>= (-1021 - e);
1251 e = -1022;
1252 }
1253
1254 r |= ((uint64_t)(e + 1022)) << 52;
1255 r |= m & 0xfffffffffffffU;
1256 #endif
1257
1258 return r;
1259 }
1260
1261 /* converts an ieee double/binary64 to a double */
1262 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1263 ecb_function_ double
1264 ecb_binary64_to_double (uint64_t x)
1265 {
1266 double r;
1267
1268 #if ECB_STDFP
1269 memcpy (&r, &x, 8);
1270 #else
1271 /* emulation, only works for normals and subnormals and +0 */
1272 int neg = x >> 63;
1273 int e = (x >> 52) & 0x7ffU;
1274
1275 x &= 0xfffffffffffffU;
1276
1277 if (e)
1278 x |= 0x10000000000000U;
1279 else
1280 e = 1;
1281
1282 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1283 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1284
1285 r = neg ? -r : r;
1286 #endif
1287
1288 return r;
1289 }
1290
1291#endif
1292
1293#endif
1294
1295/* ECB.H END */
1296
1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* if your architecture doesn't need memory fences, e.g. because it is
1299 * single-cpu/core, or if you use libev in a project that doesn't use libev
1300 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1301 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences.
1304 */
1305# error "memory fences not defined for your architecture, please report"
1306#endif
1307
1308#ifndef ECB_MEMORY_FENCE
1309# define ECB_MEMORY_FENCE do { } while (0)
1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1312#endif
1313
1314#define expect_false(cond) ecb_expect_false (cond)
1315#define expect_true(cond) ecb_expect_true (cond)
1316#define noinline ecb_noinline
1317
470#define inline_size static inline 1318#define inline_size ecb_inline
471 1319
472#if EV_MINIMAL 1320#if EV_FEATURE_CODE
1321# define inline_speed ecb_inline
1322#else
473# define inline_speed static noinline 1323# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 1324#endif
477 1325
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1327
480#if EV_MINPRI == EV_MAXPRI 1328#if EV_MINPRI == EV_MAXPRI
… …
493#define ev_active(w) ((W)(w))->active 1341#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1342#define ev_at(w) ((WT)(w))->at
495 1343
496#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1345/* sig_atomic_t is used to avoid per-thread variables or locking but still */
498/* giving it a reasonably high chance of working on typical architetcures */ 1346/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1347static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1348#endif
501 1349
502#if EV_USE_MONOTONIC 1350#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1351static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
505 1353
506#ifndef EV_FD_TO_WIN32_HANDLE 1354#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1355# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 1356#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 1357#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1358# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 1359#endif
512#ifndef EV_WIN32_CLOSE_FD 1360#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 1361# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 1362#endif
515 1363
… …
517# include "ev_win32.c" 1365# include "ev_win32.c"
518#endif 1366#endif
519 1367
520/*****************************************************************************/ 1368/*****************************************************************************/
521 1369
1370/* define a suitable floor function (only used by periodics atm) */
1371
1372#if EV_USE_FLOOR
1373# include <math.h>
1374# define ev_floor(v) floor (v)
1375#else
1376
1377#include <float.h>
1378
1379/* a floor() replacement function, should be independent of ev_tstamp type */
1380static ev_tstamp noinline
1381ev_floor (ev_tstamp v)
1382{
1383 /* the choice of shift factor is not terribly important */
1384#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1385 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1386#else
1387 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1388#endif
1389
1390 /* argument too large for an unsigned long? */
1391 if (expect_false (v >= shift))
1392 {
1393 ev_tstamp f;
1394
1395 if (v == v - 1.)
1396 return v; /* very large number */
1397
1398 f = shift * ev_floor (v * (1. / shift));
1399 return f + ev_floor (v - f);
1400 }
1401
1402 /* special treatment for negative args? */
1403 if (expect_false (v < 0.))
1404 {
1405 ev_tstamp f = -ev_floor (-v);
1406
1407 return f - (f == v ? 0 : 1);
1408 }
1409
1410 /* fits into an unsigned long */
1411 return (unsigned long)v;
1412}
1413
1414#endif
1415
1416/*****************************************************************************/
1417
1418#ifdef __linux
1419# include <sys/utsname.h>
1420#endif
1421
1422static unsigned int noinline ecb_cold
1423ev_linux_version (void)
1424{
1425#ifdef __linux
1426 unsigned int v = 0;
1427 struct utsname buf;
1428 int i;
1429 char *p = buf.release;
1430
1431 if (uname (&buf))
1432 return 0;
1433
1434 for (i = 3+1; --i; )
1435 {
1436 unsigned int c = 0;
1437
1438 for (;;)
1439 {
1440 if (*p >= '0' && *p <= '9')
1441 c = c * 10 + *p++ - '0';
1442 else
1443 {
1444 p += *p == '.';
1445 break;
1446 }
1447 }
1448
1449 v = (v << 8) | c;
1450 }
1451
1452 return v;
1453#else
1454 return 0;
1455#endif
1456}
1457
1458/*****************************************************************************/
1459
1460#if EV_AVOID_STDIO
1461static void noinline ecb_cold
1462ev_printerr (const char *msg)
1463{
1464 write (STDERR_FILENO, msg, strlen (msg));
1465}
1466#endif
1467
522static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
523 1469
524void 1470void ecb_cold
525ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
526{ 1472{
527 syserr_cb = cb; 1473 syserr_cb = cb;
528} 1474}
529 1475
530static void noinline 1476static void noinline ecb_cold
531ev_syserr (const char *msg) 1477ev_syserr (const char *msg)
532{ 1478{
533 if (!msg) 1479 if (!msg)
534 msg = "(libev) system error"; 1480 msg = "(libev) system error";
535 1481
536 if (syserr_cb) 1482 if (syserr_cb)
537 syserr_cb (msg); 1483 syserr_cb (msg);
538 else 1484 else
539 { 1485 {
1486#if EV_AVOID_STDIO
1487 ev_printerr (msg);
1488 ev_printerr (": ");
1489 ev_printerr (strerror (errno));
1490 ev_printerr ("\n");
1491#else
540 perror (msg); 1492 perror (msg);
1493#endif
541 abort (); 1494 abort ();
542 } 1495 }
543} 1496}
544 1497
545static void * 1498static void *
546ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
547{ 1500{
548 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1502 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1503 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it,
1505 * despite documenting it otherwise.
551 */ 1506 */
552 1507
553 if (size) 1508 if (size)
554 return realloc (ptr, size); 1509 return realloc (ptr, size);
555 1510
556 free (ptr); 1511 free (ptr);
557 return 0; 1512 return 0;
558} 1513}
559 1514
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
561 1516
562void 1517void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
564{ 1519{
565 alloc = cb; 1520 alloc = cb;
566} 1521}
567 1522
568inline_speed void * 1523inline_speed void *
… …
570{ 1525{
571 ptr = alloc (ptr, size); 1526 ptr = alloc (ptr, size);
572 1527
573 if (!ptr && size) 1528 if (!ptr && size)
574 { 1529 {
1530#if EV_AVOID_STDIO
1531 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1532#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1533 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1534#endif
576 abort (); 1535 abort ();
577 } 1536 }
578 1537
579 return ptr; 1538 return ptr;
580} 1539}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1555 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 1556 unsigned char unused;
598#if EV_USE_EPOLL 1557#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1558 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1559#endif
601#if EV_SELECT_IS_WINSOCKET 1560#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1561 SOCKET handle;
1562#endif
1563#if EV_USE_IOCP
1564 OVERLAPPED or, ow;
603#endif 1565#endif
604} ANFD; 1566} ANFD;
605 1567
606/* stores the pending event set for a given watcher */ 1568/* stores the pending event set for a given watcher */
607typedef struct 1569typedef struct
… …
649 #undef VAR 1611 #undef VAR
650 }; 1612 };
651 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
652 1614
653 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 1616 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 1617
656#else 1618#else
657 1619
658 ev_tstamp ev_rt_now; 1620 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 1621 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 1622 #include "ev_vars.h"
661 #undef VAR 1623 #undef VAR
662 1624
663 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
664 1626
665#endif 1627#endif
666 1628
667#if EV_MINIMAL < 2 1629#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 1632# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 1633#else
672# define EV_RELEASE_CB (void)0 1634# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 1635# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 1637#endif
676 1638
677#define EVUNLOOP_RECURSE 0x80 1639#define EVBREAK_RECURSE 0x80
678 1640
679/*****************************************************************************/ 1641/*****************************************************************************/
680 1642
681#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
682ev_tstamp 1644ev_tstamp
683ev_time (void) 1645ev_time (void) EV_THROW
684{ 1646{
685#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
687 { 1649 {
688 struct timespec ts; 1650 struct timespec ts;
… …
712 return ev_time (); 1674 return ev_time ();
713} 1675}
714 1676
715#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
716ev_tstamp 1678ev_tstamp
717ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
718{ 1680{
719 return ev_rt_now; 1681 return ev_rt_now;
720} 1682}
721#endif 1683#endif
722 1684
723void 1685void
724ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
725{ 1687{
726 if (delay > 0.) 1688 if (delay > 0.)
727 { 1689 {
728#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
729 struct timespec ts; 1691 struct timespec ts;
730 1692
731 ts.tv_sec = (time_t)delay; 1693 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
735#elif defined(_WIN32) 1695#elif defined _WIN32
736 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
737#else 1697#else
738 struct timeval tv; 1698 struct timeval tv;
739 1699
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1700 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 1701 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 1702 /* by older ones */
1703 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 1704 select (0, 0, 0, 0, &tv);
747#endif 1705#endif
748 } 1706 }
749} 1707}
750 1708
751/*****************************************************************************/ 1709/*****************************************************************************/
752 1710
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1711#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 1712
755/* find a suitable new size for the given array, */ 1713/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 1714/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 1715inline_size int
758array_nextsize (int elem, int cur, int cnt) 1716array_nextsize (int elem, int cur, int cnt)
759{ 1717{
760 int ncur = cur + 1; 1718 int ncur = cur + 1;
761 1719
762 do 1720 do
763 ncur <<= 1; 1721 ncur <<= 1;
764 while (cnt > ncur); 1722 while (cnt > ncur);
765 1723
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1724 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 1726 {
769 ncur *= elem; 1727 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1728 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
773 } 1731 }
774 1732
775 return ncur; 1733 return ncur;
776} 1734}
777 1735
778static noinline void * 1736static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 1737array_realloc (int elem, void *base, int *cur, int cnt)
780{ 1738{
781 *cur = array_nextsize (elem, *cur, cnt); 1739 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 1740 return ev_realloc (base, elem * *cur);
783} 1741}
… …
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1744 memset ((void *)(base), 0, sizeof (*(base)) * (count))
787 1745
788#define array_needsize(type,base,cur,cnt,init) \ 1746#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 1747 if (expect_false ((cnt) > (cur))) \
790 { \ 1748 { \
791 int ocur_ = (cur); \ 1749 int ecb_unused ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 1750 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 1751 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 1752 init ((base) + (ocur_), (cur) - ocur_); \
795 } 1753 }
796 1754
… …
814pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 1773{
816} 1774}
817 1775
818void noinline 1776void noinline
819ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
820{ 1778{
821 W w_ = (W)w; 1779 W w_ = (W)w;
822 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
823 1781
824 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
828 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
830 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
832 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
833} 1793}
834 1794
835inline_speed void 1795inline_speed void
836feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
837{ 1797{
… …
857} 1817}
858 1818
859/*****************************************************************************/ 1819/*****************************************************************************/
860 1820
861inline_speed void 1821inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1822fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1823{
864 ANFD *anfd = anfds + fd; 1824 ANFD *anfd = anfds + fd;
865 ev_io *w; 1825 ev_io *w;
866 1826
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1827 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1839fd_event (EV_P_ int fd, int revents)
880{ 1840{
881 ANFD *anfd = anfds + fd; 1841 ANFD *anfd = anfds + fd;
882 1842
883 if (expect_true (!anfd->reify)) 1843 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
885} 1845}
886 1846
887void 1847void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
889{ 1849{
890 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
892} 1852}
893 1853
894/* make sure the external fd watch events are in-sync */ 1854/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1855/* with the kernel/libev internal state */
896inline_size void 1856inline_size void
897fd_reify (EV_P) 1857fd_reify (EV_P)
898{ 1858{
899 int i; 1859 int i;
900 1860
1861#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1862 for (i = 0; i < fdchangecnt; ++i)
1863 {
1864 int fd = fdchanges [i];
1865 ANFD *anfd = anfds + fd;
1866
1867 if (anfd->reify & EV__IOFDSET && anfd->head)
1868 {
1869 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1870
1871 if (handle != anfd->handle)
1872 {
1873 unsigned long arg;
1874
1875 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1876
1877 /* handle changed, but fd didn't - we need to do it in two steps */
1878 backend_modify (EV_A_ fd, anfd->events, 0);
1879 anfd->events = 0;
1880 anfd->handle = handle;
1881 }
1882 }
1883 }
1884#endif
1885
901 for (i = 0; i < fdchangecnt; ++i) 1886 for (i = 0; i < fdchangecnt; ++i)
902 { 1887 {
903 int fd = fdchanges [i]; 1888 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1889 ANFD *anfd = anfds + fd;
905 ev_io *w; 1890 ev_io *w;
906 1891
907 unsigned char events = 0; 1892 unsigned char o_events = anfd->events;
1893 unsigned char o_reify = anfd->reify;
908 1894
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1895 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1896
912#if EV_SELECT_IS_WINSOCKET 1897 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1898 {
915 unsigned long arg; 1899 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1900
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1902 anfd->events |= (unsigned char)w->events;
1903
1904 if (o_events != anfd->events)
1905 o_reify = EV__IOFDSET; /* actually |= */
918 } 1906 }
919#endif
920 1907
921 { 1908 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 1909 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1910 }
932 1911
933 fdchangecnt = 0; 1912 fdchangecnt = 0;
934} 1913}
935 1914
… …
947 fdchanges [fdchangecnt - 1] = fd; 1926 fdchanges [fdchangecnt - 1] = fd;
948 } 1927 }
949} 1928}
950 1929
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1930/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1931inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1932fd_kill (EV_P_ int fd)
954{ 1933{
955 ev_io *w; 1934 ev_io *w;
956 1935
957 while ((w = (ev_io *)anfds [fd].head)) 1936 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1938 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1939 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1940 }
962} 1941}
963 1942
964/* check whether the given fd is atcually valid, for error recovery */ 1943/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1944inline_size int ecb_cold
966fd_valid (int fd) 1945fd_valid (int fd)
967{ 1946{
968#ifdef _WIN32 1947#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1949#else
971 return fcntl (fd, F_GETFD) != -1; 1950 return fcntl (fd, F_GETFD) != -1;
972#endif 1951#endif
973} 1952}
974 1953
975/* called on EBADF to verify fds */ 1954/* called on EBADF to verify fds */
976static void noinline 1955static void noinline ecb_cold
977fd_ebadf (EV_P) 1956fd_ebadf (EV_P)
978{ 1957{
979 int fd; 1958 int fd;
980 1959
981 for (fd = 0; fd < anfdmax; ++fd) 1960 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 1962 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 1963 fd_kill (EV_A_ fd);
985} 1964}
986 1965
987/* called on ENOMEM in select/poll to kill some fds and retry */ 1966/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 1967static void noinline ecb_cold
989fd_enomem (EV_P) 1968fd_enomem (EV_P)
990{ 1969{
991 int fd; 1970 int fd;
992 1971
993 for (fd = anfdmax; fd--; ) 1972 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 1990 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1991 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 1992 }
1014} 1993}
1015 1994
1995/* used to prepare libev internal fd's */
1996/* this is not fork-safe */
1997inline_speed void
1998fd_intern (int fd)
1999{
2000#ifdef _WIN32
2001 unsigned long arg = 1;
2002 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2003#else
2004 fcntl (fd, F_SETFD, FD_CLOEXEC);
2005 fcntl (fd, F_SETFL, O_NONBLOCK);
2006#endif
2007}
2008
1016/*****************************************************************************/ 2009/*****************************************************************************/
1017 2010
1018/* 2011/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 2012 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2013 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 2014 * the branching factor of the d-tree.
1022 */ 2015 */
1023 2016
1024/* 2017/*
… …
1172 2165
1173static ANSIG signals [EV_NSIG - 1]; 2166static ANSIG signals [EV_NSIG - 1];
1174 2167
1175/*****************************************************************************/ 2168/*****************************************************************************/
1176 2169
1177/* used to prepare libev internal fd's */ 2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */ 2171
2172static void noinline ecb_cold
2173evpipe_init (EV_P)
2174{
2175 if (!ev_is_active (&pipe_w))
2176 {
2177 int fds [2];
2178
2179# if EV_USE_EVENTFD
2180 fds [0] = -1;
2181 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2182 if (fds [1] < 0 && errno == EINVAL)
2183 fds [1] = eventfd (0, 0);
2184
2185 if (fds [1] < 0)
2186# endif
2187 {
2188 while (pipe (fds))
2189 ev_syserr ("(libev) error creating signal/async pipe");
2190
2191 fd_intern (fds [0]);
2192 }
2193
2194 evpipe [0] = fds [0];
2195
2196 if (evpipe [1] < 0)
2197 evpipe [1] = fds [1]; /* first call, set write fd */
2198 else
2199 {
2200 /* on subsequent calls, do not change evpipe [1] */
2201 /* so that evpipe_write can always rely on its value. */
2202 /* this branch does not do anything sensible on windows, */
2203 /* so must not be executed on windows */
2204
2205 dup2 (fds [1], evpipe [1]);
2206 close (fds [1]);
2207 }
2208
2209 fd_intern (evpipe [1]);
2210
2211 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2212 ev_io_start (EV_A_ &pipe_w);
2213 ev_unref (EV_A); /* watcher should not keep loop alive */
2214 }
2215}
2216
1179inline_speed void 2217inline_speed void
1180fd_intern (int fd) 2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1181{ 2219{
1182#ifdef _WIN32 2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1183 unsigned long arg = 1;
1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 2221
1191static void noinline 2222 if (expect_true (*flag))
1192evpipe_init (EV_P) 2223 return;
1193{ 2224
1194 if (!ev_is_active (&pipe_w)) 2225 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227
2228 pipe_write_skipped = 1;
2229
2230 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2231
2232 if (pipe_write_wanted)
1195 { 2233 {
2234 int old_errno;
2235
2236 pipe_write_skipped = 0;
2237 ECB_MEMORY_FENCE_RELEASE;
2238
2239 old_errno = errno; /* save errno because write will clobber it */
2240
1196#if EV_USE_EVENTFD 2241#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2242 if (evpipe [0] < 0)
1198 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
1202 { 2243 {
1203 evpipe [0] = -1; 2244 uint64_t counter = 1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 2245 write (evpipe [1], &counter, sizeof (uint64_t));
1205 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 2246 }
1207 else 2247 else
1208#endif 2248#endif
1209 { 2249 {
1210 while (pipe (evpipe)) 2250#ifdef _WIN32
1211 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1212 2252 DWORD sent;
1213 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1214 fd_intern (evpipe [1]); 2254 buf.len = 1;
1215 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2256#else
2257 write (evpipe [1], &(evpipe [1]), 1);
2258#endif
1216 } 2259 }
1217
1218 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 }
1221}
1222
1223inline_size void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{
1226 if (!*flag)
1227 {
1228 int old_errno = errno; /* save errno because write might clobber it */
1229
1230 *flag = 1;
1231
1232#if EV_USE_EVENTFD
1233 if (evfd >= 0)
1234 {
1235 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t));
1237 }
1238 else
1239#endif
1240 write (evpipe [1], &old_errno, 1);
1241 2260
1242 errno = old_errno; 2261 errno = old_errno;
1243 } 2262 }
1244} 2263}
1245 2264
… …
1248static void 2267static void
1249pipecb (EV_P_ ev_io *iow, int revents) 2268pipecb (EV_P_ ev_io *iow, int revents)
1250{ 2269{
1251 int i; 2270 int i;
1252 2271
2272 if (revents & EV_READ)
2273 {
1253#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1254 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1255 { 2276 {
1256 uint64_t counter; 2277 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1258 } 2279 }
1259 else 2280 else
1260#endif 2281#endif
1261 { 2282 {
1262 char dummy; 2283 char dummy[4];
2284#ifdef _WIN32
2285 WSABUF buf;
2286 DWORD recvd;
2287 DWORD flags = 0;
2288 buf.buf = dummy;
2289 buf.len = sizeof (dummy);
2290 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2291#else
1263 read (evpipe [0], &dummy, 1); 2292 read (evpipe [0], &dummy, sizeof (dummy));
2293#endif
2294 }
1264 } 2295 }
1265 2296
2297 pipe_write_skipped = 0;
2298
2299 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2300
2301#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 2302 if (sig_pending)
1267 { 2303 {
1268 sig_pending = 0; 2304 sig_pending = 0;
2305
2306 ECB_MEMORY_FENCE;
1269 2307
1270 for (i = EV_NSIG - 1; i--; ) 2308 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 2309 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1273 } 2311 }
2312#endif
1274 2313
1275#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1276 if (async_pending) 2315 if (async_pending)
1277 { 2316 {
1278 async_pending = 0; 2317 async_pending = 0;
2318
2319 ECB_MEMORY_FENCE;
1279 2320
1280 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1282 { 2323 {
1283 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2327 }
1286 } 2328 }
1287#endif 2329#endif
1288} 2330}
1289 2331
1290/*****************************************************************************/ 2332/*****************************************************************************/
1291 2333
2334void
2335ev_feed_signal (int signum) EV_THROW
2336{
2337#if EV_MULTIPLICITY
2338 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE;
2340 EV_A = signals [signum - 1].loop;
2341
2342 if (!EV_A)
2343 return;
2344#endif
2345
2346 signals [signum - 1].pending = 1;
2347 evpipe_write (EV_A_ &sig_pending);
2348}
2349
1292static void 2350static void
1293ev_sighandler (int signum) 2351ev_sighandler (int signum)
1294{ 2352{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#if _WIN32 2353#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2354 signal (signum, ev_sighandler);
1301#endif 2355#endif
1302 2356
1303 signals [signum - 1].pending = 1; 2357 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2358}
1306 2359
1307void noinline 2360void noinline
1308ev_feed_signal_event (EV_P_ int signum) 2361ev_feed_signal_event (EV_P_ int signum) EV_THROW
1309{ 2362{
1310 WL w; 2363 WL w;
1311 2364
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2365 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1313 return; 2366 return;
1314 2367
1315 --signum; 2368 --signum;
1316 2369
1317#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
… …
1321 if (expect_false (signals [signum].loop != EV_A)) 2374 if (expect_false (signals [signum].loop != EV_A))
1322 return; 2375 return;
1323#endif 2376#endif
1324 2377
1325 signals [signum].pending = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1326 2380
1327 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2383}
1330 2384
… …
1346 break; 2400 break;
1347 } 2401 }
1348} 2402}
1349#endif 2403#endif
1350 2404
2405#endif
2406
1351/*****************************************************************************/ 2407/*****************************************************************************/
1352 2408
2409#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2410static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2411
1357static ev_signal childev; 2412static ev_signal childev;
1358 2413
1359#ifndef WIFCONTINUED 2414#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2415# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2420child_reap (EV_P_ int chain, int pid, int status)
1366{ 2421{
1367 ev_child *w; 2422 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2423 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2424
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2425 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2426 {
1372 if ((w->pid == pid || !w->pid) 2427 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2428 && (!traced || (w->flags & 1)))
1374 { 2429 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2430 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 2455 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 2456 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2457 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2458
1404 child_reap (EV_A_ pid, pid, status); 2459 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2460 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2461 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2462}
1408 2463
1409#endif 2464#endif
1410 2465
1411/*****************************************************************************/ 2466/*****************************************************************************/
1412 2467
2468#if EV_USE_IOCP
2469# include "ev_iocp.c"
2470#endif
1413#if EV_USE_PORT 2471#if EV_USE_PORT
1414# include "ev_port.c" 2472# include "ev_port.c"
1415#endif 2473#endif
1416#if EV_USE_KQUEUE 2474#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2475# include "ev_kqueue.c"
… …
1424#endif 2482#endif
1425#if EV_USE_SELECT 2483#if EV_USE_SELECT
1426# include "ev_select.c" 2484# include "ev_select.c"
1427#endif 2485#endif
1428 2486
1429int 2487int ecb_cold
1430ev_version_major (void) 2488ev_version_major (void) EV_THROW
1431{ 2489{
1432 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
1433} 2491}
1434 2492
1435int 2493int ecb_cold
1436ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
1437{ 2495{
1438 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
1439} 2497}
1440 2498
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2499/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2500int inline_size ecb_cold
1443enable_secure (void) 2501enable_secure (void)
1444{ 2502{
1445#ifdef _WIN32 2503#ifdef _WIN32
1446 return 0; 2504 return 0;
1447#else 2505#else
1448 return getuid () != geteuid () 2506 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2507 || getgid () != getegid ();
1450#endif 2508#endif
1451} 2509}
1452 2510
1453unsigned int 2511unsigned int ecb_cold
1454ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
1455{ 2513{
1456 unsigned int flags = 0; 2514 unsigned int flags = 0;
1457 2515
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 2521
1464 return flags; 2522 return flags;
1465} 2523}
1466 2524
1467unsigned int 2525unsigned int ecb_cold
1468ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
1469{ 2527{
1470 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
1471 2529
1472#ifndef __NetBSD__ 2530#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 2535#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 2536 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2537 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2538 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 2539#endif
2540#ifdef __FreeBSD__
2541 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2542#endif
1482 2543
1483 return flags; 2544 return flags;
1484} 2545}
1485 2546
2547unsigned int ecb_cold
2548ev_embeddable_backends (void) EV_THROW
2549{
2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2551
2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2554 flags &= ~EVBACKEND_EPOLL;
2555
2556 return flags;
2557}
2558
1486unsigned int 2559unsigned int
1487ev_embeddable_backends (void) 2560ev_backend (EV_P) EV_THROW
1488{ 2561{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2562 return backend;
1490
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */
1493 flags &= ~EVBACKEND_EPOLL;
1494
1495 return flags;
1496} 2563}
1497 2564
2565#if EV_FEATURE_API
1498unsigned int 2566unsigned int
1499ev_backend (EV_P) 2567ev_iteration (EV_P) EV_THROW
1500{ 2568{
1501 return backend; 2569 return loop_count;
1502} 2570}
1503 2571
1504#if EV_MINIMAL < 2
1505unsigned int 2572unsigned int
1506ev_loop_count (EV_P) 2573ev_depth (EV_P) EV_THROW
1507{
1508 return loop_count;
1509}
1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{ 2574{
1514 return loop_depth; 2575 return loop_depth;
1515} 2576}
1516 2577
1517void 2578void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1519{ 2580{
1520 io_blocktime = interval; 2581 io_blocktime = interval;
1521} 2582}
1522 2583
1523void 2584void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2586{
1526 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
1527} 2588}
1528 2589
1529void 2590void
1530ev_set_userdata (EV_P_ void *data) 2591ev_set_userdata (EV_P_ void *data) EV_THROW
1531{ 2592{
1532 userdata = data; 2593 userdata = data;
1533} 2594}
1534 2595
1535void * 2596void *
1536ev_userdata (EV_P) 2597ev_userdata (EV_P) EV_THROW
1537{ 2598{
1538 return userdata; 2599 return userdata;
1539} 2600}
1540 2601
2602void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1542{ 2604{
1543 invoke_cb = invoke_pending_cb; 2605 invoke_cb = invoke_pending_cb;
1544} 2606}
1545 2607
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2608void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1547{ 2610{
1548 release_cb = release; 2611 release_cb = release;
1549 acquire_cb = acquire; 2612 acquire_cb = acquire;
1550} 2613}
1551#endif 2614#endif
1552 2615
1553/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
1554static void noinline 2617static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
1556{ 2619{
1557 if (!backend) 2620 if (!backend)
1558 { 2621 {
2622 origflags = flags;
2623
1559#if EV_USE_REALTIME 2624#if EV_USE_REALTIME
1560 if (!have_realtime) 2625 if (!have_realtime)
1561 { 2626 {
1562 struct timespec ts; 2627 struct timespec ts;
1563 2628
… …
1585 if (!(flags & EVFLAG_NOENV) 2650 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 2651 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 2652 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 2653 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 2654
1590 ev_rt_now = ev_time (); 2655 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 2656 mn_now = get_clock ();
1592 now_floor = mn_now; 2657 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 2658 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 2659#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 2660 invoke_cb = ev_invoke_pending;
1596#endif 2661#endif
1597 2662
1598 io_blocktime = 0.; 2663 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 2664 timeout_blocktime = 0.;
1600 backend = 0; 2665 backend = 0;
1601 backend_fd = -1; 2666 backend_fd = -1;
1602 sig_pending = 0; 2667 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 2668#if EV_ASYNC_ENABLE
1604 async_pending = 0; 2669 async_pending = 0;
1605#endif 2670#endif
2671 pipe_write_skipped = 0;
2672 pipe_write_wanted = 0;
2673 evpipe [0] = -1;
2674 evpipe [1] = -1;
1606#if EV_USE_INOTIFY 2675#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 2677#endif
1609#if EV_USE_SIGNALFD 2678#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 2680#endif
1612 2681
1613 if (!(flags & 0x0000ffffU)) 2682 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 2683 flags |= ev_recommended_backends ();
1615 2684
2685#if EV_USE_IOCP
2686 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2687#endif
1616#if EV_USE_PORT 2688#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2689 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 2690#endif
1619#if EV_USE_KQUEUE 2691#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2692 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 2702#endif
1631 2703
1632 ev_prepare_init (&pending_w, pendingcb); 2704 ev_prepare_init (&pending_w, pendingcb);
1633 2705
2706#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 2707 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 2708 ev_set_priority (&pipe_w, EV_MAXPRI);
2709#endif
1636 } 2710 }
1637} 2711}
1638 2712
1639/* free up a loop structure */ 2713/* free up a loop structure */
1640static void noinline 2714void ecb_cold
1641loop_destroy (EV_P) 2715ev_loop_destroy (EV_P)
1642{ 2716{
1643 int i; 2717 int i;
2718
2719#if EV_MULTIPLICITY
2720 /* mimic free (0) */
2721 if (!EV_A)
2722 return;
2723#endif
2724
2725#if EV_CLEANUP_ENABLE
2726 /* queue cleanup watchers (and execute them) */
2727 if (expect_false (cleanupcnt))
2728 {
2729 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2730 EV_INVOKE_PENDING;
2731 }
2732#endif
2733
2734#if EV_CHILD_ENABLE
2735 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2736 {
2737 ev_ref (EV_A); /* child watcher */
2738 ev_signal_stop (EV_A_ &childev);
2739 }
2740#endif
1644 2741
1645 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
1646 { 2743 {
1647 /*ev_ref (EV_A);*/ 2744 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
1649 2746
1650#if EV_USE_EVENTFD
1651 if (evfd >= 0)
1652 close (evfd);
1653#endif
1654
1655 if (evpipe [0] >= 0)
1656 {
1657 EV_WIN32_CLOSE_FD (evpipe [0]); 2747 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1658 EV_WIN32_CLOSE_FD (evpipe [1]); 2748 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1659 }
1660 } 2749 }
1661 2750
1662#if EV_USE_SIGNALFD 2751#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 2752 if (ev_is_active (&sigfd_w))
1664 close (sigfd); 2753 close (sigfd);
… …
1670#endif 2759#endif
1671 2760
1672 if (backend_fd >= 0) 2761 if (backend_fd >= 0)
1673 close (backend_fd); 2762 close (backend_fd);
1674 2763
2764#if EV_USE_IOCP
2765 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2766#endif
1675#if EV_USE_PORT 2767#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2768 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 2769#endif
1678#if EV_USE_KQUEUE 2770#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2771 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1706 array_free (periodic, EMPTY); 2798 array_free (periodic, EMPTY);
1707#endif 2799#endif
1708#if EV_FORK_ENABLE 2800#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 2801 array_free (fork, EMPTY);
1710#endif 2802#endif
2803#if EV_CLEANUP_ENABLE
2804 array_free (cleanup, EMPTY);
2805#endif
1711 array_free (prepare, EMPTY); 2806 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 2807 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 2808#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 2809 array_free (async, EMPTY);
1715#endif 2810#endif
1716 2811
1717 backend = 0; 2812 backend = 0;
2813
2814#if EV_MULTIPLICITY
2815 if (ev_is_default_loop (EV_A))
2816#endif
2817 ev_default_loop_ptr = 0;
2818#if EV_MULTIPLICITY
2819 else
2820 ev_free (EV_A);
2821#endif
1718} 2822}
1719 2823
1720#if EV_USE_INOTIFY 2824#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 2825inline_size void infy_fork (EV_P);
1722#endif 2826#endif
… …
1735#endif 2839#endif
1736#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
1737 infy_fork (EV_A); 2841 infy_fork (EV_A);
1738#endif 2842#endif
1739 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1740 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
1741 { 2846 {
1742 /* this "locks" the handlers against writing to the pipe */ 2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1743 /* while we modify the fd vars */
1744 sig_pending = 1;
1745#if EV_ASYNC_ENABLE
1746 async_pending = 1;
1747#endif
1748 2848
1749 ev_ref (EV_A); 2849 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
1751 2851
1752#if EV_USE_EVENTFD
1753 if (evfd >= 0)
1754 close (evfd);
1755#endif
1756
1757 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
1758 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]);
1761 }
1762 2854
1763 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
1765 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1766 } 2858 }
2859#endif
1767 2860
1768 postfork = 0; 2861 postfork = 0;
1769} 2862}
1770 2863
1771#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
1772 2865
1773struct ev_loop * 2866struct ev_loop * ecb_cold
1774ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
1775{ 2868{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 2870
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
1780 2873
1781 if (ev_backend (EV_A)) 2874 if (ev_backend (EV_A))
1782 return EV_A; 2875 return EV_A;
1783 2876
2877 ev_free (EV_A);
1784 return 0; 2878 return 0;
1785} 2879}
1786 2880
1787void
1788ev_loop_destroy (EV_P)
1789{
1790 loop_destroy (EV_A);
1791 ev_free (loop);
1792}
1793
1794void
1795ev_loop_fork (EV_P)
1796{
1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */ 2881#endif /* multiplicity */
1800 2882
1801#if EV_VERIFY 2883#if EV_VERIFY
1802static void noinline 2884static void noinline ecb_cold
1803verify_watcher (EV_P_ W w) 2885verify_watcher (EV_P_ W w)
1804{ 2886{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2887 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 2888
1807 if (w->pending) 2889 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2890 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 2891}
1810 2892
1811static void noinline 2893static void noinline ecb_cold
1812verify_heap (EV_P_ ANHE *heap, int N) 2894verify_heap (EV_P_ ANHE *heap, int N)
1813{ 2895{
1814 int i; 2896 int i;
1815 2897
1816 for (i = HEAP0; i < N + HEAP0; ++i) 2898 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 2903
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 2905 }
1824} 2906}
1825 2907
1826static void noinline 2908static void noinline ecb_cold
1827array_verify (EV_P_ W *ws, int cnt) 2909array_verify (EV_P_ W *ws, int cnt)
1828{ 2910{
1829 while (cnt--) 2911 while (cnt--)
1830 { 2912 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 2914 verify_watcher (EV_A_ ws [cnt]);
1833 } 2915 }
1834} 2916}
1835#endif 2917#endif
1836 2918
1837#if EV_MINIMAL < 2 2919#if EV_FEATURE_API
1838void 2920void ecb_cold
1839ev_loop_verify (EV_P) 2921ev_verify (EV_P) EV_THROW
1840{ 2922{
1841#if EV_VERIFY 2923#if EV_VERIFY
1842 int i; 2924 int i;
1843 WL w; 2925 WL w, w2;
1844 2926
1845 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
1846 2928
1847 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 2932
1851 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
1853 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 2939 {
1855 verify_watcher (EV_A_ (W)w); 2940 verify_watcher (EV_A_ (W)w);
2941
2942 if (j++ & 1)
2943 {
2944 assert (("libev: io watcher list contains a loop", w != w2));
2945 w2 = w2->next;
2946 }
2947
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2948 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2949 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 2950 }
2951 }
1859 2952
1860 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
1862 2955
1863#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 2971#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 2972 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 2973 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 2974#endif
1882 2975
2976#if EV_CLEANUP_ENABLE
2977 assert (cleanupmax >= cleanupcnt);
2978 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2979#endif
2980
1883#if EV_ASYNC_ENABLE 2981#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 2982 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 2983 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 2984#endif
1887 2985
2986#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 2987 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 2988 array_verify (EV_A_ (W *)prepares, preparecnt);
2989#endif
1890 2990
2991#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 2992 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 2993 array_verify (EV_A_ (W *)checks, checkcnt);
2994#endif
1893 2995
1894# if 0 2996# if 0
2997#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2998 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2999 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3000#endif
1897# endif 3001# endif
1898#endif 3002#endif
1899} 3003}
1900#endif 3004#endif
1901 3005
1902#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
1903struct ev_loop * 3007struct ev_loop * ecb_cold
1904ev_default_loop_init (unsigned int flags)
1905#else 3008#else
1906int 3009int
3010#endif
1907ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
1908#endif
1909{ 3012{
1910 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
1911 { 3014 {
1912#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 3020
1918 loop_init (EV_A_ flags); 3021 loop_init (EV_A_ flags);
1919 3022
1920 if (ev_backend (EV_A)) 3023 if (ev_backend (EV_A))
1921 { 3024 {
1922#ifndef _WIN32 3025#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 3026 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 3027 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 3028 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3029 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 3030#endif
… …
1932 3035
1933 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
1934} 3037}
1935 3038
1936void 3039void
1937ev_default_destroy (void) 3040ev_loop_fork (EV_P) EV_THROW
1938{ 3041{
1939#if EV_MULTIPLICITY 3042 postfork = 1;
1940 EV_P = ev_default_loop_ptr;
1941#endif
1942
1943 ev_default_loop_ptr = 0;
1944
1945#ifndef _WIN32
1946 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev);
1948#endif
1949
1950 loop_destroy (EV_A);
1951}
1952
1953void
1954ev_default_fork (void)
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = ev_default_loop_ptr;
1958#endif
1959
1960 postfork = 1; /* must be in line with ev_loop_fork */
1961} 3043}
1962 3044
1963/*****************************************************************************/ 3045/*****************************************************************************/
1964 3046
1965void 3047void
… …
1967{ 3049{
1968 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
1969} 3051}
1970 3052
1971unsigned int 3053unsigned int
1972ev_pending_count (EV_P) 3054ev_pending_count (EV_P) EV_THROW
1973{ 3055{
1974 int pri; 3056 int pri;
1975 unsigned int count = 0; 3057 unsigned int count = 0;
1976 3058
1977 for (pri = NUMPRI; pri--; ) 3059 for (pri = NUMPRI; pri--; )
… …
1981} 3063}
1982 3064
1983void noinline 3065void noinline
1984ev_invoke_pending (EV_P) 3066ev_invoke_pending (EV_P)
1985{ 3067{
1986 int pri; 3068 pendingpri = NUMPRI;
1987 3069
1988 for (pri = NUMPRI; pri--; ) 3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
1989 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
1990 { 3075 {
1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1992 3077
1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1995
1996 p->w->pending = 0; 3078 p->w->pending = 0;
1997 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
1998 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
1999 } 3081 }
3082 }
2000} 3083}
2001 3084
2002#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
2003/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
2056 EV_FREQUENT_CHECK; 3139 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 3140 feed_reverse (EV_A_ (W)w);
2058 } 3141 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3142 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 3143
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 3144 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 3145 }
2063} 3146}
2064 3147
2065#if EV_PERIODIC_ENABLE 3148#if EV_PERIODIC_ENABLE
3149
3150static void noinline
3151periodic_recalc (EV_P_ ev_periodic *w)
3152{
3153 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3154 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3155
3156 /* the above almost always errs on the low side */
3157 while (at <= ev_rt_now)
3158 {
3159 ev_tstamp nat = at + w->interval;
3160
3161 /* when resolution fails us, we use ev_rt_now */
3162 if (expect_false (nat == at))
3163 {
3164 at = ev_rt_now;
3165 break;
3166 }
3167
3168 at = nat;
3169 }
3170
3171 ev_at (w) = at;
3172}
3173
2066/* make periodics pending */ 3174/* make periodics pending */
2067inline_size void 3175inline_size void
2068periodics_reify (EV_P) 3176periodics_reify (EV_P)
2069{ 3177{
2070 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2071 3179
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 3181 {
2074 int feed_count = 0;
2075
2076 do 3182 do
2077 { 3183 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 3185
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 3195 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 3196 downheap (periodics, periodiccnt, HEAP0);
2091 } 3197 }
2092 else if (w->interval) 3198 else if (w->interval)
2093 { 3199 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3200 periodic_recalc (EV_A_ w);
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]); 3201 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 3202 downheap (periodics, periodiccnt, HEAP0);
2110 } 3203 }
2111 else 3204 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3205 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 3212 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 3213 }
2121} 3214}
2122 3215
2123/* simply recalculate all periodics */ 3216/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3217/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 3218static void noinline ecb_cold
2126periodics_reschedule (EV_P) 3219periodics_reschedule (EV_P)
2127{ 3220{
2128 int i; 3221 int i;
2129 3222
2130 /* adjust periodics after time jump */ 3223 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3226 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 3227
2135 if (w->reschedule_cb) 3228 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3229 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 3230 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3231 periodic_recalc (EV_A_ w);
2139 3232
2140 ANHE_at_cache (periodics [i]); 3233 ANHE_at_cache (periodics [i]);
2141 } 3234 }
2142 3235
2143 reheap (periodics, periodiccnt); 3236 reheap (periodics, periodiccnt);
2144} 3237}
2145#endif 3238#endif
2146 3239
2147/* adjust all timers by a given offset */ 3240/* adjust all timers by a given offset */
2148static void noinline 3241static void noinline ecb_cold
2149timers_reschedule (EV_P_ ev_tstamp adjust) 3242timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 3243{
2151 int i; 3244 int i;
2152 3245
2153 for (i = 0; i < timercnt; ++i) 3246 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 3250 ANHE_at_cache (*he);
2158 } 3251 }
2159} 3252}
2160 3253
2161/* fetch new monotonic and realtime times from the kernel */ 3254/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 3255/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 3256inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 3257time_update (EV_P_ ev_tstamp max_block)
2165{ 3258{
2166#if EV_USE_MONOTONIC 3259#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 3260 if (expect_true (have_monotonic))
… …
2190 * doesn't hurt either as we only do this on time-jumps or 3283 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 3284 * in the unlikely event of having been preempted here.
2192 */ 3285 */
2193 for (i = 4; --i; ) 3286 for (i = 4; --i; )
2194 { 3287 {
3288 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 3289 rtmn_diff = ev_rt_now - mn_now;
2196 3290
3291 diff = odiff - rtmn_diff;
3292
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3293 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2198 return; /* all is well */ 3294 return; /* all is well */
2199 3295
2200 ev_rt_now = ev_time (); 3296 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 3297 mn_now = get_clock ();
2202 now_floor = mn_now; 3298 now_floor = mn_now;
… …
2224 3320
2225 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2226 } 3322 }
2227} 3323}
2228 3324
2229void 3325int
2230ev_loop (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2231{ 3327{
2232#if EV_MINIMAL < 2 3328#if EV_FEATURE_API
2233 ++loop_depth; 3329 ++loop_depth;
2234#endif 3330#endif
2235 3331
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3332 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 3333
2238 loop_done = EVUNLOOP_CANCEL; 3334 loop_done = EVBREAK_CANCEL;
2239 3335
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3336 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 3337
2242 do 3338 do
2243 { 3339 {
2244#if EV_VERIFY >= 2 3340#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 3341 ev_verify (EV_A);
2246#endif 3342#endif
2247 3343
2248#ifndef _WIN32 3344#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 3345 if (expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 3346 if (expect_false (getpid () != curpid))
… …
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3358 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 3359 EV_INVOKE_PENDING;
2264 } 3360 }
2265#endif 3361#endif
2266 3362
3363#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 3364 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 3365 if (expect_false (preparecnt))
2269 { 3366 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3367 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 3368 EV_INVOKE_PENDING;
2272 } 3369 }
3370#endif
2273 3371
2274 if (expect_false (loop_done)) 3372 if (expect_false (loop_done))
2275 break; 3373 break;
2276 3374
2277 /* we might have forked, so reify kernel state if necessary */ 3375 /* we might have forked, so reify kernel state if necessary */
… …
2284 /* calculate blocking time */ 3382 /* calculate blocking time */
2285 { 3383 {
2286 ev_tstamp waittime = 0.; 3384 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 3385 ev_tstamp sleeptime = 0.;
2288 3386
3387 /* remember old timestamp for io_blocktime calculation */
3388 ev_tstamp prev_mn_now = mn_now;
3389
3390 /* update time to cancel out callback processing overhead */
3391 time_update (EV_A_ 1e100);
3392
3393 /* from now on, we want a pipe-wake-up */
3394 pipe_write_wanted = 1;
3395
3396 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3397
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 3399 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 3400 waittime = MAX_BLOCKTIME;
2298 3401
2299 if (timercnt) 3402 if (timercnt)
2300 { 3403 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2303 } 3406 }
2304 3407
2305#if EV_PERIODIC_ENABLE 3408#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 3409 if (periodiccnt)
2307 { 3410 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3411 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 3412 if (waittime > to) waittime = to;
2310 } 3413 }
2311#endif 3414#endif
2312 3415
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3416 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 3417 if (expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 3418 waittime = timeout_blocktime;
3419
3420 /* at this point, we NEED to wait, so we have to ensure */
3421 /* to pass a minimum nonzero value to the backend */
3422 if (expect_false (waittime < backend_mintime))
3423 waittime = backend_mintime;
2316 3424
2317 /* extra check because io_blocktime is commonly 0 */ 3425 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 3426 if (expect_false (io_blocktime))
2319 { 3427 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 3429
2322 if (sleeptime > waittime - backend_fudge) 3430 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 3431 sleeptime = waittime - backend_mintime;
2324 3432
2325 if (expect_true (sleeptime > 0.)) 3433 if (expect_true (sleeptime > 0.))
2326 { 3434 {
2327 ev_sleep (sleeptime); 3435 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 3436 waittime -= sleeptime;
2329 } 3437 }
2330 } 3438 }
2331 } 3439 }
2332 3440
2333#if EV_MINIMAL < 2 3441#if EV_FEATURE_API
2334 ++loop_count; 3442 ++loop_count;
2335#endif 3443#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3447
3448 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3449
3450 ECB_MEMORY_FENCE_ACQUIRE;
3451 if (pipe_write_skipped)
3452 {
3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3455 }
3456
2339 3457
2340 /* update ev_rt_now, do magic */ 3458 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 3459 time_update (EV_A_ waittime + sleeptime);
2342 } 3460 }
2343 3461
… …
2350#if EV_IDLE_ENABLE 3468#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 3469 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 3470 idle_reify (EV_A);
2353#endif 3471#endif
2354 3472
3473#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 3474 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 3475 if (expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3476 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3477#endif
2358 3478
2359 EV_INVOKE_PENDING; 3479 EV_INVOKE_PENDING;
2360 } 3480 }
2361 while (expect_true ( 3481 while (expect_true (
2362 activecnt 3482 activecnt
2363 && !loop_done 3483 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3484 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 3485 ));
2366 3486
2367 if (loop_done == EVUNLOOP_ONE) 3487 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
2369 3489
2370#if EV_MINIMAL < 2 3490#if EV_FEATURE_API
2371 --loop_depth; 3491 --loop_depth;
2372#endif 3492#endif
3493
3494 return activecnt;
2373} 3495}
2374 3496
2375void 3497void
2376ev_unloop (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
2377{ 3499{
2378 loop_done = how; 3500 loop_done = how;
2379} 3501}
2380 3502
2381void 3503void
2382ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
2383{ 3505{
2384 ++activecnt; 3506 ++activecnt;
2385} 3507}
2386 3508
2387void 3509void
2388ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
2389{ 3511{
2390 --activecnt; 3512 --activecnt;
2391} 3513}
2392 3514
2393void 3515void
2394ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
2395{ 3517{
2396 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
2397} 3519}
2398 3520
2399void 3521void
2400ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
2401{ 3523{
2402 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
2403} 3525}
2404 3526
2405void 3527void
2406ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
2407{ 3529{
2408 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
2409 3531
2410 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2450 w->pending = 0; 3572 w->pending = 0;
2451 } 3573 }
2452} 3574}
2453 3575
2454int 3576int
2455ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
2456{ 3578{
2457 W w_ = (W)w; 3579 W w_ = (W)w;
2458 int pending = w_->pending; 3580 int pending = w_->pending;
2459 3581
2460 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
2493} 3615}
2494 3616
2495/*****************************************************************************/ 3617/*****************************************************************************/
2496 3618
2497void noinline 3619void noinline
2498ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
2499{ 3621{
2500 int fd = w->fd; 3622 int fd = w->fd;
2501 3623
2502 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
2503 return; 3625 return;
2504 3626
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3627 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3628 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 3629
2508 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2509 3631
2510 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2512 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
2513 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
2516 3641
2517 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2518} 3643}
2519 3644
2520void noinline 3645void noinline
2521ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
2522{ 3647{
2523 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2525 return; 3650 return;
2526 3651
… …
2529 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2530 3655
2531 wlist_del (&anfds[w->fd].head, (WL)w); 3656 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 3657 ev_stop (EV_A_ (W)w);
2533 3658
2534 fd_change (EV_A_ w->fd, 1); 3659 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 3660
2536 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2537} 3662}
2538 3663
2539void noinline 3664void noinline
2540ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2541{ 3666{
2542 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
2543 return; 3668 return;
2544 3669
2545 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
2559 3684
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 3686}
2562 3687
2563void noinline 3688void noinline
2564ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2565{ 3690{
2566 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2568 return; 3693 return;
2569 3694
… …
2581 timers [active] = timers [timercnt + HEAP0]; 3706 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 3707 adjustheap (timers, timercnt, active);
2583 } 3708 }
2584 } 3709 }
2585 3710
2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now; 3711 ev_at (w) -= mn_now;
2589 3712
2590 ev_stop (EV_A_ (W)w); 3713 ev_stop (EV_A_ (W)w);
3714
3715 EV_FREQUENT_CHECK;
2591} 3716}
2592 3717
2593void noinline 3718void noinline
2594ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2595{ 3720{
2596 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
2597 3724
2598 if (ev_is_active (w)) 3725 if (ev_is_active (w))
2599 { 3726 {
2600 if (w->repeat) 3727 if (w->repeat)
2601 { 3728 {
… …
2614 3741
2615 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2616} 3743}
2617 3744
2618ev_tstamp 3745ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2620{ 3747{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2622} 3749}
2623 3750
2624#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
2625void noinline 3752void noinline
2626ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2627{ 3754{
2628 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
2629 return; 3756 return;
2630 3757
2631 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 3760 else if (w->interval)
2634 { 3761 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3762 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2636 /* this formula differs from the one in periodic_reify because we do not always round up */ 3763 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 3764 }
2639 else 3765 else
2640 ev_at (w) = w->offset; 3766 ev_at (w) = w->offset;
2641 3767
2642 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
… …
2652 3778
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 3780}
2655 3781
2656void noinline 3782void noinline
2657ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2658{ 3784{
2659 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
2661 return; 3787 return;
2662 3788
… …
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 3800 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 3801 adjustheap (periodics, periodiccnt, active);
2676 } 3802 }
2677 } 3803 }
2678 3804
2679 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w); 3805 ev_stop (EV_A_ (W)w);
3806
3807 EV_FREQUENT_CHECK;
2682} 3808}
2683 3809
2684void noinline 3810void noinline
2685ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2686{ 3812{
2687 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
2690} 3816}
… …
2692 3818
2693#ifndef SA_RESTART 3819#ifndef SA_RESTART
2694# define SA_RESTART 0 3820# define SA_RESTART 0
2695#endif 3821#endif
2696 3822
3823#if EV_SIGNAL_ENABLE
3824
2697void noinline 3825void noinline
2698ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2699{ 3827{
2700 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
2701 return; 3829 return;
2702 3830
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2705#if EV_MULTIPLICITY 3833#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops", 3834 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3835 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2708 3836
2709 signals [w->signum - 1].loop = EV_A; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
2710#endif 3839#endif
2711 3840
2712 EV_FREQUENT_CHECK; 3841 EV_FREQUENT_CHECK;
2713 3842
2714#if EV_USE_SIGNALFD 3843#if EV_USE_SIGNALFD
… …
2747 if (!((WL)w)->next) 3876 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD 3877# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/ 3878 if (sigfd < 0) /*TODO*/
2750# endif 3879# endif
2751 { 3880 {
2752# if _WIN32 3881# ifdef _WIN32
2753 evpipe_init (EV_A); 3882 evpipe_init (EV_A);
2754 3883
2755 signal (w->signum, ev_sighandler); 3884 signal (w->signum, ev_sighandler);
2756# else 3885# else
2757 struct sigaction sa; 3886 struct sigaction sa;
… …
2761 sa.sa_handler = ev_sighandler; 3890 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 3891 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 3893 sigaction (w->signum, &sa, 0);
2765 3894
3895 if (origflags & EVFLAG_NOSIGMASK)
3896 {
2766 sigemptyset (&sa.sa_mask); 3897 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 3898 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3900 }
2769#endif 3901#endif
2770 } 3902 }
2771 3903
2772 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2773} 3905}
2774 3906
2775void noinline 3907void noinline
2776ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2777{ 3909{
2778 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
2780 return; 3912 return;
2781 3913
… …
2807 } 3939 }
2808 3940
2809 EV_FREQUENT_CHECK; 3941 EV_FREQUENT_CHECK;
2810} 3942}
2811 3943
3944#endif
3945
3946#if EV_CHILD_ENABLE
3947
2812void 3948void
2813ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
2814{ 3950{
2815#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2817#endif 3953#endif
2818 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
2819 return; 3955 return;
2820 3956
2821 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2822 3958
2823 ev_start (EV_A_ (W)w, 1); 3959 ev_start (EV_A_ (W)w, 1);
2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2825 3961
2826 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
2827} 3963}
2828 3964
2829void 3965void
2830ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
2831{ 3967{
2832 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
2834 return; 3970 return;
2835 3971
2836 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
2837 3973
2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2839 ev_stop (EV_A_ (W)w); 3975 ev_stop (EV_A_ (W)w);
2840 3976
2841 EV_FREQUENT_CHECK; 3977 EV_FREQUENT_CHECK;
2842} 3978}
3979
3980#endif
2843 3981
2844#if EV_STAT_ENABLE 3982#if EV_STAT_ENABLE
2845 3983
2846# ifdef _WIN32 3984# ifdef _WIN32
2847# undef lstat 3985# undef lstat
… …
2853#define MIN_STAT_INTERVAL 0.1074891 3991#define MIN_STAT_INTERVAL 0.1074891
2854 3992
2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2856 3994
2857#if EV_USE_INOTIFY 3995#if EV_USE_INOTIFY
2858# define EV_INOTIFY_BUFSIZE 8192 3996
3997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2859 3999
2860static void noinline 4000static void noinline
2861infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
2862{ 4002{
2863 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4003 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4006 | IN_DONT_FOLLOW | IN_MASK_ADD);
2864 4007
2865 if (w->wd >= 0) 4008 if (w->wd >= 0)
2866 { 4009 {
2867 struct statfs sfs; 4010 struct statfs sfs;
2868 4011
… …
2872 4015
2873 if (!fs_2625) 4016 if (!fs_2625)
2874 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2875 else if (!statfs (w->path, &sfs) 4018 else if (!statfs (w->path, &sfs)
2876 && (sfs.f_type == 0x1373 /* devfs */ 4019 && (sfs.f_type == 0x1373 /* devfs */
4020 || sfs.f_type == 0x4006 /* fat */
4021 || sfs.f_type == 0x4d44 /* msdos */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */ 4022 || sfs.f_type == 0xEF53 /* ext2/3 */
4023 || sfs.f_type == 0x72b6 /* jffs2 */
4024 || sfs.f_type == 0x858458f6 /* ramfs */
4025 || sfs.f_type == 0x5346544e /* ntfs */
2878 || sfs.f_type == 0x3153464a /* jfs */ 4026 || sfs.f_type == 0x3153464a /* jfs */
4027 || sfs.f_type == 0x9123683e /* btrfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */ 4028 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */ 4029 || sfs.f_type == 0x01021994 /* tmpfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)) 4030 || sfs.f_type == 0x58465342 /* xfs */))
2882 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4031 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2883 else 4032 else
2884 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4033 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2885 } 4034 }
… …
2906 if (!pend || pend == path) 4055 if (!pend || pend == path)
2907 break; 4056 break;
2908 4057
2909 *pend = 0; 4058 *pend = 0;
2910 w->wd = inotify_add_watch (fs_fd, path, mask); 4059 w->wd = inotify_add_watch (fs_fd, path, mask);
2911 } 4060 }
2912 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4061 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2913 } 4062 }
2914 } 4063 }
2915 4064
2916 if (w->wd >= 0) 4065 if (w->wd >= 0)
2917 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4066 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2918 4067
2919 /* now re-arm timer, if required */ 4068 /* now re-arm timer, if required */
2920 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4069 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2921 ev_timer_again (EV_A_ &w->timer); 4070 ev_timer_again (EV_A_ &w->timer);
2922 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4071 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2930 4079
2931 if (wd < 0) 4080 if (wd < 0)
2932 return; 4081 return;
2933 4082
2934 w->wd = -2; 4083 w->wd = -2;
2935 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4084 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2936 wlist_del (&fs_hash [slot].head, (WL)w); 4085 wlist_del (&fs_hash [slot].head, (WL)w);
2937 4086
2938 /* remove this watcher, if others are watching it, they will rearm */ 4087 /* remove this watcher, if others are watching it, they will rearm */
2939 inotify_rm_watch (fs_fd, wd); 4088 inotify_rm_watch (fs_fd, wd);
2940} 4089}
… …
2942static void noinline 4091static void noinline
2943infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4092infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2944{ 4093{
2945 if (slot < 0) 4094 if (slot < 0)
2946 /* overflow, need to check for all hash slots */ 4095 /* overflow, need to check for all hash slots */
2947 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4096 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2948 infy_wd (EV_A_ slot, wd, ev); 4097 infy_wd (EV_A_ slot, wd, ev);
2949 else 4098 else
2950 { 4099 {
2951 WL w_; 4100 WL w_;
2952 4101
2953 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4102 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2954 { 4103 {
2955 ev_stat *w = (ev_stat *)w_; 4104 ev_stat *w = (ev_stat *)w_;
2956 w_ = w_->next; /* lets us remove this watcher and all before it */ 4105 w_ = w_->next; /* lets us remove this watcher and all before it */
2957 4106
2958 if (w->wd == wd || wd == -1) 4107 if (w->wd == wd || wd == -1)
2959 { 4108 {
2960 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4109 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2961 { 4110 {
2962 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4111 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2963 w->wd = -1; 4112 w->wd = -1;
2964 infy_add (EV_A_ w); /* re-add, no matter what */ 4113 infy_add (EV_A_ w); /* re-add, no matter what */
2965 } 4114 }
2966 4115
2967 stat_timer_cb (EV_A_ &w->timer, 0); 4116 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2972 4121
2973static void 4122static void
2974infy_cb (EV_P_ ev_io *w, int revents) 4123infy_cb (EV_P_ ev_io *w, int revents)
2975{ 4124{
2976 char buf [EV_INOTIFY_BUFSIZE]; 4125 char buf [EV_INOTIFY_BUFSIZE];
2977 struct inotify_event *ev = (struct inotify_event *)buf;
2978 int ofs; 4126 int ofs;
2979 int len = read (fs_fd, buf, sizeof (buf)); 4127 int len = read (fs_fd, buf, sizeof (buf));
2980 4128
2981 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4129 for (ofs = 0; ofs < len; )
4130 {
4131 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2982 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4132 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4133 ofs += sizeof (struct inotify_event) + ev->len;
4134 }
2983} 4135}
2984 4136
2985inline_size void 4137inline_size void ecb_cold
2986check_2625 (EV_P) 4138ev_check_2625 (EV_P)
2987{ 4139{
2988 /* kernels < 2.6.25 are borked 4140 /* kernels < 2.6.25 are borked
2989 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4141 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2990 */ 4142 */
2991 struct utsname buf; 4143 if (ev_linux_version () < 0x020619)
2992 int major, minor, micro;
2993
2994 if (uname (&buf))
2995 return;
2996
2997 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2998 return;
2999
3000 if (major < 2
3001 || (major == 2 && minor < 6)
3002 || (major == 2 && minor == 6 && micro < 25))
3003 return; 4144 return;
3004 4145
3005 fs_2625 = 1; 4146 fs_2625 = 1;
3006} 4147}
3007 4148
3008inline_size int 4149inline_size int
3009infy_newfd (void) 4150infy_newfd (void)
3010{ 4151{
3011#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4152#if defined IN_CLOEXEC && defined IN_NONBLOCK
3012 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4153 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3013 if (fd >= 0) 4154 if (fd >= 0)
3014 return fd; 4155 return fd;
3015#endif 4156#endif
3016 return inotify_init (); 4157 return inotify_init ();
… …
3022 if (fs_fd != -2) 4163 if (fs_fd != -2)
3023 return; 4164 return;
3024 4165
3025 fs_fd = -1; 4166 fs_fd = -1;
3026 4167
3027 check_2625 (EV_A); 4168 ev_check_2625 (EV_A);
3028 4169
3029 fs_fd = infy_newfd (); 4170 fs_fd = infy_newfd ();
3030 4171
3031 if (fs_fd >= 0) 4172 if (fs_fd >= 0)
3032 { 4173 {
… …
3057 ev_io_set (&fs_w, fs_fd, EV_READ); 4198 ev_io_set (&fs_w, fs_fd, EV_READ);
3058 ev_io_start (EV_A_ &fs_w); 4199 ev_io_start (EV_A_ &fs_w);
3059 ev_unref (EV_A); 4200 ev_unref (EV_A);
3060 } 4201 }
3061 4202
3062 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4203 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3063 { 4204 {
3064 WL w_ = fs_hash [slot].head; 4205 WL w_ = fs_hash [slot].head;
3065 fs_hash [slot].head = 0; 4206 fs_hash [slot].head = 0;
3066 4207
3067 while (w_) 4208 while (w_)
… …
3091#else 4232#else
3092# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
3093#endif 4234#endif
3094 4235
3095void 4236void
3096ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3097{ 4238{
3098 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
3099 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
3100 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
3101 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
3140 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
3141 } 4282 }
3142} 4283}
3143 4284
3144void 4285void
3145ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3146{ 4287{
3147 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
3148 return; 4289 return;
3149 4290
3150 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
3171 4312
3172 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
3173} 4314}
3174 4315
3175void 4316void
3176ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3177{ 4318{
3178 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
3179 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
3180 return; 4321 return;
3181 4322
… …
3197} 4338}
3198#endif 4339#endif
3199 4340
3200#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
3201void 4342void
3202ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3203{ 4344{
3204 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3205 return; 4346 return;
3206 4347
3207 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
3220 4361
3221 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
3222} 4363}
3223 4364
3224void 4365void
3225ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3226{ 4367{
3227 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3228 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
3229 return; 4370 return;
3230 4371
… …
3242 4383
3243 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
3244} 4385}
3245#endif 4386#endif
3246 4387
4388#if EV_PREPARE_ENABLE
3247void 4389void
3248ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3249{ 4391{
3250 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
3251 return; 4393 return;
3252 4394
3253 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
3258 4400
3259 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3260} 4402}
3261 4403
3262void 4404void
3263ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3264{ 4406{
3265 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3266 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3267 return; 4409 return;
3268 4410
… …
3277 4419
3278 ev_stop (EV_A_ (W)w); 4420 ev_stop (EV_A_ (W)w);
3279 4421
3280 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3281} 4423}
4424#endif
3282 4425
4426#if EV_CHECK_ENABLE
3283void 4427void
3284ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
3285{ 4429{
3286 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
3287 return; 4431 return;
3288 4432
3289 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
3294 4438
3295 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
3296} 4440}
3297 4441
3298void 4442void
3299ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
3300{ 4444{
3301 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3302 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
3303 return; 4447 return;
3304 4448
… …
3313 4457
3314 ev_stop (EV_A_ (W)w); 4458 ev_stop (EV_A_ (W)w);
3315 4459
3316 EV_FREQUENT_CHECK; 4460 EV_FREQUENT_CHECK;
3317} 4461}
4462#endif
3318 4463
3319#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3320void noinline 4465void noinline
3321ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3322{ 4467{
3323 ev_loop (w->other, EVLOOP_NONBLOCK); 4468 ev_run (w->other, EVRUN_NOWAIT);
3324} 4469}
3325 4470
3326static void 4471static void
3327embed_io_cb (EV_P_ ev_io *io, int revents) 4472embed_io_cb (EV_P_ ev_io *io, int revents)
3328{ 4473{
3329 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4474 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3330 4475
3331 if (ev_cb (w)) 4476 if (ev_cb (w))
3332 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4477 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3333 else 4478 else
3334 ev_loop (w->other, EVLOOP_NONBLOCK); 4479 ev_run (w->other, EVRUN_NOWAIT);
3335} 4480}
3336 4481
3337static void 4482static void
3338embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4483embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3339{ 4484{
… …
3343 EV_P = w->other; 4488 EV_P = w->other;
3344 4489
3345 while (fdchangecnt) 4490 while (fdchangecnt)
3346 { 4491 {
3347 fd_reify (EV_A); 4492 fd_reify (EV_A);
3348 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4493 ev_run (EV_A_ EVRUN_NOWAIT);
3349 } 4494 }
3350 } 4495 }
3351} 4496}
3352 4497
3353static void 4498static void
… …
3359 4504
3360 { 4505 {
3361 EV_P = w->other; 4506 EV_P = w->other;
3362 4507
3363 ev_loop_fork (EV_A); 4508 ev_loop_fork (EV_A);
3364 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4509 ev_run (EV_A_ EVRUN_NOWAIT);
3365 } 4510 }
3366 4511
3367 ev_embed_start (EV_A_ w); 4512 ev_embed_start (EV_A_ w);
3368} 4513}
3369 4514
… …
3374 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
3375} 4520}
3376#endif 4521#endif
3377 4522
3378void 4523void
3379ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3380{ 4525{
3381 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
3382 return; 4527 return;
3383 4528
3384 { 4529 {
… …
3405 4550
3406 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
3407} 4552}
3408 4553
3409void 4554void
3410ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3411{ 4556{
3412 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
3413 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
3414 return; 4559 return;
3415 4560
… …
3417 4562
3418 ev_io_stop (EV_A_ &w->io); 4563 ev_io_stop (EV_A_ &w->io);
3419 ev_prepare_stop (EV_A_ &w->prepare); 4564 ev_prepare_stop (EV_A_ &w->prepare);
3420 ev_fork_stop (EV_A_ &w->fork); 4565 ev_fork_stop (EV_A_ &w->fork);
3421 4566
4567 ev_stop (EV_A_ (W)w);
4568
3422 EV_FREQUENT_CHECK; 4569 EV_FREQUENT_CHECK;
3423} 4570}
3424#endif 4571#endif
3425 4572
3426#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
3427void 4574void
3428ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3429{ 4576{
3430 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
3431 return; 4578 return;
3432 4579
3433 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
3438 4585
3439 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3440} 4587}
3441 4588
3442void 4589void
3443ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3444{ 4591{
3445 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3446 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3447 return; 4594 return;
3448 4595
… …
3459 4606
3460 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3461} 4608}
3462#endif 4609#endif
3463 4610
4611#if EV_CLEANUP_ENABLE
4612void
4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4614{
4615 if (expect_false (ev_is_active (w)))
4616 return;
4617
4618 EV_FREQUENT_CHECK;
4619
4620 ev_start (EV_A_ (W)w, ++cleanupcnt);
4621 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4622 cleanups [cleanupcnt - 1] = w;
4623
4624 /* cleanup watchers should never keep a refcount on the loop */
4625 ev_unref (EV_A);
4626 EV_FREQUENT_CHECK;
4627}
4628
4629void
4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4631{
4632 clear_pending (EV_A_ (W)w);
4633 if (expect_false (!ev_is_active (w)))
4634 return;
4635
4636 EV_FREQUENT_CHECK;
4637 ev_ref (EV_A);
4638
4639 {
4640 int active = ev_active (w);
4641
4642 cleanups [active - 1] = cleanups [--cleanupcnt];
4643 ev_active (cleanups [active - 1]) = active;
4644 }
4645
4646 ev_stop (EV_A_ (W)w);
4647
4648 EV_FREQUENT_CHECK;
4649}
4650#endif
4651
3464#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
3465void 4653void
3466ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
3467{ 4655{
3468 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
3469 return; 4657 return;
4658
4659 w->sent = 0;
3470 4660
3471 evpipe_init (EV_A); 4661 evpipe_init (EV_A);
3472 4662
3473 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
3474 4664
… …
3478 4668
3479 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
3480} 4670}
3481 4671
3482void 4672void
3483ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
3484{ 4674{
3485 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
3486 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
3487 return; 4677 return;
3488 4678
… …
3499 4689
3500 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
3501} 4691}
3502 4692
3503void 4693void
3504ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
3505{ 4695{
3506 w->sent = 1; 4696 w->sent = 1;
3507 evpipe_write (EV_A_ &async_pending); 4697 evpipe_write (EV_A_ &async_pending);
3508} 4698}
3509#endif 4699#endif
… …
3546 4736
3547 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3548} 4738}
3549 4739
3550void 4740void
3551ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3552{ 4742{
3553 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3554 4744
3555 if (expect_false (!once)) 4745 if (expect_false (!once))
3556 { 4746 {
3557 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4747 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3558 return; 4748 return;
3559 } 4749 }
3560 4750
3561 once->cb = cb; 4751 once->cb = cb;
3562 once->arg = arg; 4752 once->arg = arg;
… …
3577} 4767}
3578 4768
3579/*****************************************************************************/ 4769/*****************************************************************************/
3580 4770
3581#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
3582void 4772void ecb_cold
3583ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3584{ 4774{
3585 int i, j; 4775 int i, j;
3586 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
3587 4777
3588 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
3631 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4821 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3632#endif 4822#endif
3633 4823
3634#if EV_IDLE_ENABLE 4824#if EV_IDLE_ENABLE
3635 if (types & EV_IDLE) 4825 if (types & EV_IDLE)
3636 for (j = NUMPRI; i--; ) 4826 for (j = NUMPRI; j--; )
3637 for (i = idlecnt [j]; i--; ) 4827 for (i = idlecnt [j]; i--; )
3638 cb (EV_A_ EV_IDLE, idles [j][i]); 4828 cb (EV_A_ EV_IDLE, idles [j][i]);
3639#endif 4829#endif
3640 4830
3641#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
… …
3649 if (types & EV_ASYNC) 4839 if (types & EV_ASYNC)
3650 for (i = asynccnt; i--; ) 4840 for (i = asynccnt; i--; )
3651 cb (EV_A_ EV_ASYNC, asyncs [i]); 4841 cb (EV_A_ EV_ASYNC, asyncs [i]);
3652#endif 4842#endif
3653 4843
4844#if EV_PREPARE_ENABLE
3654 if (types & EV_PREPARE) 4845 if (types & EV_PREPARE)
3655 for (i = preparecnt; i--; ) 4846 for (i = preparecnt; i--; )
3656#if EV_EMBED_ENABLE 4847# if EV_EMBED_ENABLE
3657 if (ev_cb (prepares [i]) != embed_prepare_cb) 4848 if (ev_cb (prepares [i]) != embed_prepare_cb)
3658#endif 4849# endif
3659 cb (EV_A_ EV_PREPARE, prepares [i]); 4850 cb (EV_A_ EV_PREPARE, prepares [i]);
4851#endif
3660 4852
4853#if EV_CHECK_ENABLE
3661 if (types & EV_CHECK) 4854 if (types & EV_CHECK)
3662 for (i = checkcnt; i--; ) 4855 for (i = checkcnt; i--; )
3663 cb (EV_A_ EV_CHECK, checks [i]); 4856 cb (EV_A_ EV_CHECK, checks [i]);
4857#endif
3664 4858
4859#if EV_SIGNAL_ENABLE
3665 if (types & EV_SIGNAL) 4860 if (types & EV_SIGNAL)
3666 for (i = 0; i < EV_NSIG - 1; ++i) 4861 for (i = 0; i < EV_NSIG - 1; ++i)
3667 for (wl = signals [i].head; wl; ) 4862 for (wl = signals [i].head; wl; )
3668 { 4863 {
3669 wn = wl->next; 4864 wn = wl->next;
3670 cb (EV_A_ EV_SIGNAL, wl); 4865 cb (EV_A_ EV_SIGNAL, wl);
3671 wl = wn; 4866 wl = wn;
3672 } 4867 }
4868#endif
3673 4869
4870#if EV_CHILD_ENABLE
3674 if (types & EV_CHILD) 4871 if (types & EV_CHILD)
3675 for (i = EV_PID_HASHSIZE; i--; ) 4872 for (i = (EV_PID_HASHSIZE); i--; )
3676 for (wl = childs [i]; wl; ) 4873 for (wl = childs [i]; wl; )
3677 { 4874 {
3678 wn = wl->next; 4875 wn = wl->next;
3679 cb (EV_A_ EV_CHILD, wl); 4876 cb (EV_A_ EV_CHILD, wl);
3680 wl = wn; 4877 wl = wn;
3681 } 4878 }
4879#endif
3682/* EV_STAT 0x00001000 /* stat data changed */ 4880/* EV_STAT 0x00001000 /* stat data changed */
3683/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4881/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3684} 4882}
3685#endif 4883#endif
3686 4884
3687#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
3688 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
3689#endif 4887#endif
3690 4888
3691#ifdef __cplusplus
3692}
3693#endif
3694

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines