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Comparing libev/ev.c (file contents):
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC vs.
Revision 1.452 by root, Mon Feb 18 03:20:29 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
188 221
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 225#if defined EV_NSIG
193/* use what's provided */ 226/* use what's provided */
194#elif defined (NSIG) 227#elif defined NSIG
195# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 229#elif defined _NSIG
197# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 231#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 233#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 237#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 239#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 243#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 245#else
213# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
215# define EV_NSIG 65 249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
216#endif 254#endif
217 255
218#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 259# else
222# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
223# endif 261# endif
224#endif 262#endif
225 263
226#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 267# else
230# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
231# endif 269# endif
232#endif 270#endif
233 271
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 274#endif
237 275
238#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 279# else
242# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
243# endif 281# endif
244#endif 282#endif
245 283
246#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 286#endif
249 287
250#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
251# ifdef _WIN32 289# ifdef _WIN32
252# define EV_USE_POLL 0 290# define EV_USE_POLL 0
253# else 291# else
254# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 293# endif
256#endif 294#endif
257 295
258#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 299# else
262# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
263# endif 301# endif
264#endif 302#endif
265 303
… …
271# define EV_USE_PORT 0 309# define EV_USE_PORT 0
272#endif 310#endif
273 311
274#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 315# else
278# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
279# endif 317# endif
280#endif 318#endif
281 319
282#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 322#endif
289 323
290#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 326#endif
297 327
298#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 331# else
302# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
303# endif 333# endif
304#endif 334#endif
305 335
306#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 339# else
310# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
311# endif 341# endif
312#endif 342#endif
313 343
… …
316# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
318#endif 348#endif
319 349
320#ifndef EV_VERIFY 350#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 352#endif
323 353
324#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 356#endif
327 357
328#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
330#endif 376#endif
331 377
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 381# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
340# else 386# else
… …
359# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
361#endif 407#endif
362 408
363#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 412# include <sys/select.h>
366# endif 413# endif
367#endif 414#endif
368 415
369#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 417# include <sys/statfs.h>
372# include <sys/inotify.h> 418# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
377# endif 423# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 424#endif
383 425
384#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 428# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
393# else 435# else
394# define EFD_CLOEXEC 02000000 436# define EFD_CLOEXEC 02000000
395# endif 437# endif
396# endif 438# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 440#endif
405 441
406#if EV_USE_SIGNALFD 442#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 444# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 450# define SFD_CLOEXEC O_CLOEXEC
415# else 451# else
416# define SFD_CLOEXEC 02000000 452# define SFD_CLOEXEC 02000000
417# endif 453# endif
418# endif 454# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 456
424struct signalfd_siginfo 457struct signalfd_siginfo
425{ 458{
426 uint32_t ssi_signo; 459 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 460 char pad[128 - sizeof (uint32_t)];
428}; 461};
429# ifdef __cplusplus
430}
431# endif 462#endif
432#endif
433
434 463
435/**/ 464/**/
436 465
437#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 468#else
440# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
441#endif 470#endif
442 471
443/* 472/*
444 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 475 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 478
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
456#if __GNUC__ >= 4 529 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
458# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
459#else 545#else
460# define expect(expr,value) (expr) 546 #include <inttypes.h>
461# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
463# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
464# endif 552#endif
553
554/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so.
558 * we try to detect these and simply assume they are not gcc - if they have
559 * an issue with that they should have done it right in the first place.
560 */
561#ifndef ECB_GCC_VERSION
562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
563 #define ECB_GCC_VERSION(major,minor) 0
564 #else
565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
465#endif 566 #endif
567#endif
466 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
711
712#if __cplusplus
713 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__
716#elif ECB_C99
717 #define ecb_inline static inline
718#else
719 #define ecb_inline static
720#endif
721
722#if ECB_GCC_VERSION(3,3)
723 #define ecb_restrict __restrict__
724#elif ECB_C99
725 #define ecb_restrict restrict
726#else
727 #define ecb_restrict
728#endif
729
730typedef int ecb_bool;
731
732#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
736
737#define ecb_function_ ecb_inline
738
739#if ECB_GCC_VERSION(3,1)
740 #define ecb_attribute(attrlist) __attribute__(attrlist)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality)
749#endif
750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
758#define ecb_noinline ecb_attribute ((__noinline__))
759#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
768
769#if ECB_GCC_VERSION(4,3)
770 #define ecb_artificial ecb_attribute ((__artificial__))
771 #define ecb_hot ecb_attribute ((__hot__))
772 #define ecb_cold ecb_attribute ((__cold__))
773#else
774 #define ecb_artificial
775 #define ecb_hot
776 #define ecb_cold
777#endif
778
779/* put around conditional expressions if you are very sure that the */
780/* expression is mostly true or mostly false. note that these return */
781/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
1219
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
469#define inline_size static inline 1224#define inline_size ecb_inline
470 1225
471#if EV_MINIMAL 1226#if EV_FEATURE_CODE
1227# define inline_speed ecb_inline
1228#else
472# define inline_speed static noinline 1229# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 1230#endif
476 1231
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1233
479#if EV_MINPRI == EV_MAXPRI 1234#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 1247#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1248#define ev_at(w) ((WT)(w))->at
494 1249
495#if EV_USE_REALTIME 1250#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1251/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 1252/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1253static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1254#endif
500 1255
501#if EV_USE_MONOTONIC 1256#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1257static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1259
505#ifndef EV_FD_TO_WIN32_HANDLE 1260#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1261# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1262#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1263#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1264# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1265#endif
511#ifndef EV_WIN32_CLOSE_FD 1266#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1267# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1268#endif
514 1269
… …
516# include "ev_win32.c" 1271# include "ev_win32.c"
517#endif 1272#endif
518 1273
519/*****************************************************************************/ 1274/*****************************************************************************/
520 1275
1276/* define a suitable floor function (only used by periodics atm) */
1277
1278#if EV_USE_FLOOR
1279# include <math.h>
1280# define ev_floor(v) floor (v)
1281#else
1282
1283#include <float.h>
1284
1285/* a floor() replacement function, should be independent of ev_tstamp type */
1286static ev_tstamp noinline
1287ev_floor (ev_tstamp v)
1288{
1289 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif
1295
1296 /* argument too large for an unsigned long? */
1297 if (expect_false (v >= shift))
1298 {
1299 ev_tstamp f;
1300
1301 if (v == v - 1.)
1302 return v; /* very large number */
1303
1304 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f);
1306 }
1307
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */
1317 return (unsigned long)v;
1318}
1319
1320#endif
1321
1322/*****************************************************************************/
1323
1324#ifdef __linux
1325# include <sys/utsname.h>
1326#endif
1327
1328static unsigned int noinline ecb_cold
1329ev_linux_version (void)
1330{
1331#ifdef __linux
1332 unsigned int v = 0;
1333 struct utsname buf;
1334 int i;
1335 char *p = buf.release;
1336
1337 if (uname (&buf))
1338 return 0;
1339
1340 for (i = 3+1; --i; )
1341 {
1342 unsigned int c = 0;
1343
1344 for (;;)
1345 {
1346 if (*p >= '0' && *p <= '9')
1347 c = c * 10 + *p++ - '0';
1348 else
1349 {
1350 p += *p == '.';
1351 break;
1352 }
1353 }
1354
1355 v = (v << 8) | c;
1356 }
1357
1358 return v;
1359#else
1360 return 0;
1361#endif
1362}
1363
1364/*****************************************************************************/
1365
1366#if EV_AVOID_STDIO
1367static void noinline ecb_cold
1368ev_printerr (const char *msg)
1369{
1370 write (STDERR_FILENO, msg, strlen (msg));
1371}
1372#endif
1373
521static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
522 1375
523void 1376void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
525{ 1378{
526 syserr_cb = cb; 1379 syserr_cb = cb;
527} 1380}
528 1381
529static void noinline 1382static void noinline ecb_cold
530ev_syserr (const char *msg) 1383ev_syserr (const char *msg)
531{ 1384{
532 if (!msg) 1385 if (!msg)
533 msg = "(libev) system error"; 1386 msg = "(libev) system error";
534 1387
535 if (syserr_cb) 1388 if (syserr_cb)
536 syserr_cb (msg); 1389 syserr_cb (msg);
537 else 1390 else
538 { 1391 {
1392#if EV_AVOID_STDIO
1393 ev_printerr (msg);
1394 ev_printerr (": ");
1395 ev_printerr (strerror (errno));
1396 ev_printerr ("\n");
1397#else
539 perror (msg); 1398 perror (msg);
1399#endif
540 abort (); 1400 abort ();
541 } 1401 }
542} 1402}
543 1403
544static void * 1404static void *
545ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
546{ 1406{
547 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
550 */ 1412 */
551 1413
552 if (size) 1414 if (size)
553 return realloc (ptr, size); 1415 return realloc (ptr, size);
554 1416
555 free (ptr); 1417 free (ptr);
556 return 0; 1418 return 0;
557} 1419}
558 1420
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
560 1422
561void 1423void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
563{ 1425{
564 alloc = cb; 1426 alloc = cb;
565} 1427}
566 1428
567inline_speed void * 1429inline_speed void *
… …
569{ 1431{
570 ptr = alloc (ptr, size); 1432 ptr = alloc (ptr, size);
571 1433
572 if (!ptr && size) 1434 if (!ptr && size)
573 { 1435 {
1436#if EV_AVOID_STDIO
1437 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1438#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1439 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1440#endif
575 abort (); 1441 abort ();
576 } 1442 }
577 1443
578 return ptr; 1444 return ptr;
579} 1445}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1461 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1462 unsigned char unused;
597#if EV_USE_EPOLL 1463#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1464 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1465#endif
600#if EV_SELECT_IS_WINSOCKET 1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1467 SOCKET handle;
1468#endif
1469#if EV_USE_IOCP
1470 OVERLAPPED or, ow;
602#endif 1471#endif
603} ANFD; 1472} ANFD;
604 1473
605/* stores the pending event set for a given watcher */ 1474/* stores the pending event set for a given watcher */
606typedef struct 1475typedef struct
… …
648 #undef VAR 1517 #undef VAR
649 }; 1518 };
650 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
651 1520
652 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1523
655#else 1524#else
656 1525
657 ev_tstamp ev_rt_now; 1526 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1527 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1528 #include "ev_vars.h"
660 #undef VAR 1529 #undef VAR
661 1530
662 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
663 1532
664#endif 1533#endif
665 1534
666#if EV_MINIMAL < 2 1535#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1536# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1537# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1538# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1539#else
671# define EV_RELEASE_CB (void)0 1540# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1541# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1542# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1543#endif
675 1544
676#define EVUNLOOP_RECURSE 0x80 1545#define EVBREAK_RECURSE 0x80
677 1546
678/*****************************************************************************/ 1547/*****************************************************************************/
679 1548
680#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1550ev_tstamp
682ev_time (void) 1551ev_time (void) EV_THROW
683{ 1552{
684#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
686 { 1555 {
687 struct timespec ts; 1556 struct timespec ts;
… …
711 return ev_time (); 1580 return ev_time ();
712} 1581}
713 1582
714#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
715ev_tstamp 1584ev_tstamp
716ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
717{ 1586{
718 return ev_rt_now; 1587 return ev_rt_now;
719} 1588}
720#endif 1589#endif
721 1590
722void 1591void
723ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
724{ 1593{
725 if (delay > 0.) 1594 if (delay > 0.)
726 { 1595 {
727#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
728 struct timespec ts; 1597 struct timespec ts;
729 1598
730 ts.tv_sec = (time_t)delay; 1599 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1601#elif defined _WIN32
735 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
736#else 1603#else
737 struct timeval tv; 1604 struct timeval tv;
738 1605
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1607 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1608 /* by older ones */
1609 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1610 select (0, 0, 0, 0, &tv);
746#endif 1611#endif
747 } 1612 }
748} 1613}
749 1614
750/*****************************************************************************/ 1615/*****************************************************************************/
751 1616
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1617#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1618
754/* find a suitable new size for the given array, */ 1619/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1620/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1621inline_size int
757array_nextsize (int elem, int cur, int cnt) 1622array_nextsize (int elem, int cur, int cnt)
758{ 1623{
759 int ncur = cur + 1; 1624 int ncur = cur + 1;
760 1625
761 do 1626 do
762 ncur <<= 1; 1627 ncur <<= 1;
763 while (cnt > ncur); 1628 while (cnt > ncur);
764 1629
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1632 {
768 ncur *= elem; 1633 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1637 }
773 1638
774 return ncur; 1639 return ncur;
775} 1640}
776 1641
777static noinline void * 1642static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1643array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1644{
780 *cur = array_nextsize (elem, *cur, cnt); 1645 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1646 return ev_realloc (base, elem * *cur);
782} 1647}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1650 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1651
787#define array_needsize(type,base,cur,cnt,init) \ 1652#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1653 if (expect_false ((cnt) > (cur))) \
789 { \ 1654 { \
790 int ocur_ = (cur); \ 1655 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1656 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1657 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1658 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1659 }
795 1660
… …
813pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 1679{
815} 1680}
816 1681
817void noinline 1682void noinline
818ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
819{ 1684{
820 W w_ = (W)w; 1685 W w_ = (W)w;
821 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
822 1687
823 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
827 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
829 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
831 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
832} 1699}
833 1700
834inline_speed void 1701inline_speed void
835feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
836{ 1703{
… …
856} 1723}
857 1724
858/*****************************************************************************/ 1725/*****************************************************************************/
859 1726
860inline_speed void 1727inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1728fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1729{
863 ANFD *anfd = anfds + fd; 1730 ANFD *anfd = anfds + fd;
864 ev_io *w; 1731 ev_io *w;
865 1732
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1733 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1745fd_event (EV_P_ int fd, int revents)
879{ 1746{
880 ANFD *anfd = anfds + fd; 1747 ANFD *anfd = anfds + fd;
881 1748
882 if (expect_true (!anfd->reify)) 1749 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1750 fd_event_nocheck (EV_A_ fd, revents);
884} 1751}
885 1752
886void 1753void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
888{ 1755{
889 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
891} 1758}
892 1759
893/* make sure the external fd watch events are in-sync */ 1760/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1761/* with the kernel/libev internal state */
895inline_size void 1762inline_size void
896fd_reify (EV_P) 1763fd_reify (EV_P)
897{ 1764{
898 int i; 1765 int i;
899 1766
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i)
1769 {
1770 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd;
1772
1773 if (anfd->reify & EV__IOFDSET && anfd->head)
1774 {
1775 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1776
1777 if (handle != anfd->handle)
1778 {
1779 unsigned long arg;
1780
1781 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1782
1783 /* handle changed, but fd didn't - we need to do it in two steps */
1784 backend_modify (EV_A_ fd, anfd->events, 0);
1785 anfd->events = 0;
1786 anfd->handle = handle;
1787 }
1788 }
1789 }
1790#endif
1791
900 for (i = 0; i < fdchangecnt; ++i) 1792 for (i = 0; i < fdchangecnt; ++i)
901 { 1793 {
902 int fd = fdchanges [i]; 1794 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1795 ANFD *anfd = anfds + fd;
904 ev_io *w; 1796 ev_io *w;
905 1797
906 unsigned char events = 0; 1798 unsigned char o_events = anfd->events;
1799 unsigned char o_reify = anfd->reify;
907 1800
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1801 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1802
911#if EV_SELECT_IS_WINSOCKET 1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1804 {
914 unsigned long arg; 1805 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1806
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1807 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1808 anfd->events |= (unsigned char)w->events;
1809
1810 if (o_events != anfd->events)
1811 o_reify = EV__IOFDSET; /* actually |= */
917 } 1812 }
918#endif
919 1813
920 { 1814 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 1815 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1816 }
931 1817
932 fdchangecnt = 0; 1818 fdchangecnt = 0;
933} 1819}
934 1820
… …
946 fdchanges [fdchangecnt - 1] = fd; 1832 fdchanges [fdchangecnt - 1] = fd;
947 } 1833 }
948} 1834}
949 1835
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1836/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1837inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1838fd_kill (EV_P_ int fd)
953{ 1839{
954 ev_io *w; 1840 ev_io *w;
955 1841
956 while ((w = (ev_io *)anfds [fd].head)) 1842 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1844 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1845 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1846 }
961} 1847}
962 1848
963/* check whether the given fd is atcually valid, for error recovery */ 1849/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1850inline_size int ecb_cold
965fd_valid (int fd) 1851fd_valid (int fd)
966{ 1852{
967#ifdef _WIN32 1853#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1855#else
970 return fcntl (fd, F_GETFD) != -1; 1856 return fcntl (fd, F_GETFD) != -1;
971#endif 1857#endif
972} 1858}
973 1859
974/* called on EBADF to verify fds */ 1860/* called on EBADF to verify fds */
975static void noinline 1861static void noinline ecb_cold
976fd_ebadf (EV_P) 1862fd_ebadf (EV_P)
977{ 1863{
978 int fd; 1864 int fd;
979 1865
980 for (fd = 0; fd < anfdmax; ++fd) 1866 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1868 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1869 fd_kill (EV_A_ fd);
984} 1870}
985 1871
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1872/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1873static void noinline ecb_cold
988fd_enomem (EV_P) 1874fd_enomem (EV_P)
989{ 1875{
990 int fd; 1876 int fd;
991 1877
992 for (fd = anfdmax; fd--; ) 1878 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1896 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1897 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1898 }
1013} 1899}
1014 1900
1901/* used to prepare libev internal fd's */
1902/* this is not fork-safe */
1903inline_speed void
1904fd_intern (int fd)
1905{
1906#ifdef _WIN32
1907 unsigned long arg = 1;
1908 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1909#else
1910 fcntl (fd, F_SETFD, FD_CLOEXEC);
1911 fcntl (fd, F_SETFL, O_NONBLOCK);
1912#endif
1913}
1914
1015/*****************************************************************************/ 1915/*****************************************************************************/
1016 1916
1017/* 1917/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1918 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1919 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1920 * the branching factor of the d-tree.
1021 */ 1921 */
1022 1922
1023/* 1923/*
… …
1171 2071
1172static ANSIG signals [EV_NSIG - 1]; 2072static ANSIG signals [EV_NSIG - 1];
1173 2073
1174/*****************************************************************************/ 2074/*****************************************************************************/
1175 2075
1176/* used to prepare libev internal fd's */ 2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */ 2077
2078static void noinline ecb_cold
2079evpipe_init (EV_P)
2080{
2081 if (!ev_is_active (&pipe_w))
2082 {
2083 int fds [2];
2084
2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2088 if (fds [1] < 0 && errno == EINVAL)
2089 fds [1] = eventfd (0, 0);
2090
2091 if (fds [1] < 0)
2092# endif
2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
2102 evpipe [0] = fds [0];
2103
2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
1178inline_speed void 2123inline_speed void
1179fd_intern (int fd) 2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1180{ 2125{
1181#ifdef _WIN32 2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 2127
1190static void noinline 2128 if (expect_true (*flag))
1191evpipe_init (EV_P) 2129 return;
1192{ 2130
1193 if (!ev_is_active (&pipe_w)) 2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
1194 { 2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
1195#if EV_USE_EVENTFD 2147#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2148 if (evpipe [0] < 0)
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 { 2149 {
1202 evpipe [0] = -1; 2150 uint64_t counter = 1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 2151 write (evpipe [1], &counter, sizeof (uint64_t));
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 2152 }
1206 else 2153 else
1207#endif 2154#endif
1208 { 2155 {
1209 while (pipe (evpipe)) 2156#ifdef _WIN32
1210 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1211 2158 DWORD sent;
1212 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1213 fd_intern (evpipe [1]); 2160 buf.len = 1;
1214 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2162#else
2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1215 } 2165 }
1216
1217 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1;
1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240 2166
1241 errno = old_errno; 2167 errno = old_errno;
1242 } 2168 }
1243} 2169}
1244 2170
… …
1247static void 2173static void
1248pipecb (EV_P_ ev_io *iow, int revents) 2174pipecb (EV_P_ ev_io *iow, int revents)
1249{ 2175{
1250 int i; 2176 int i;
1251 2177
2178 if (revents & EV_READ)
2179 {
1252#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1253 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1254 { 2182 {
1255 uint64_t counter; 2183 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1257 } 2185 }
1258 else 2186 else
1259#endif 2187#endif
1260 { 2188 {
1261 char dummy; 2189 char dummy[4];
2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1262 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
2200 }
1263 } 2201 }
1264 2202
2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2206
2207#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 2208 if (sig_pending)
1266 { 2209 {
1267 sig_pending = 0; 2210 sig_pending = 0;
2211
2212 ECB_MEMORY_FENCE;
1268 2213
1269 for (i = EV_NSIG - 1; i--; ) 2214 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 2215 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1272 } 2217 }
2218#endif
1273 2219
1274#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1275 if (async_pending) 2221 if (async_pending)
1276 { 2222 {
1277 async_pending = 0; 2223 async_pending = 0;
2224
2225 ECB_MEMORY_FENCE;
1278 2226
1279 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1281 { 2229 {
1282 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2233 }
1285 } 2234 }
1286#endif 2235#endif
1287} 2236}
1288 2237
1289/*****************************************************************************/ 2238/*****************************************************************************/
1290 2239
2240void
2241ev_feed_signal (int signum) EV_THROW
2242{
2243#if EV_MULTIPLICITY
2244 ECB_MEMORY_FENCE_ACQUIRE;
2245 EV_P = signals [signum - 1].loop;
2246
2247 if (!EV_A)
2248 return;
2249#endif
2250
2251 signals [signum - 1].pending = 1;
2252 evpipe_write (EV_A_ &sig_pending);
2253}
2254
1291static void 2255static void
1292ev_sighandler (int signum) 2256ev_sighandler (int signum)
1293{ 2257{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2258#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2259 signal (signum, ev_sighandler);
1300#endif 2260#endif
1301 2261
1302 signals [signum - 1].pending = 1; 2262 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2263}
1305 2264
1306void noinline 2265void noinline
1307ev_feed_signal_event (EV_P_ int signum) 2266ev_feed_signal_event (EV_P_ int signum) EV_THROW
1308{ 2267{
1309 WL w; 2268 WL w;
1310 2269
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2270 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2271 return;
1313 2272
1314 --signum; 2273 --signum;
1315 2274
1316#if EV_MULTIPLICITY 2275#if EV_MULTIPLICITY
… …
1320 if (expect_false (signals [signum].loop != EV_A)) 2279 if (expect_false (signals [signum].loop != EV_A))
1321 return; 2280 return;
1322#endif 2281#endif
1323 2282
1324 signals [signum].pending = 0; 2283 signals [signum].pending = 0;
2284 ECB_MEMORY_FENCE_RELEASE;
1325 2285
1326 for (w = signals [signum].head; w; w = w->next) 2286 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2287 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2288}
1329 2289
… …
1345 break; 2305 break;
1346 } 2306 }
1347} 2307}
1348#endif 2308#endif
1349 2309
2310#endif
2311
1350/*****************************************************************************/ 2312/*****************************************************************************/
1351 2313
2314#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2315static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2316
1356static ev_signal childev; 2317static ev_signal childev;
1357 2318
1358#ifndef WIFCONTINUED 2319#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2320# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2325child_reap (EV_P_ int chain, int pid, int status)
1365{ 2326{
1366 ev_child *w; 2327 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2328 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2329
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2330 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2331 {
1371 if ((w->pid == pid || !w->pid) 2332 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2333 && (!traced || (w->flags & 1)))
1373 { 2334 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2335 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2360 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2361 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2362 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2363
1403 child_reap (EV_A_ pid, pid, status); 2364 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2365 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2366 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2367}
1407 2368
1408#endif 2369#endif
1409 2370
1410/*****************************************************************************/ 2371/*****************************************************************************/
1411 2372
2373#if EV_USE_IOCP
2374# include "ev_iocp.c"
2375#endif
1412#if EV_USE_PORT 2376#if EV_USE_PORT
1413# include "ev_port.c" 2377# include "ev_port.c"
1414#endif 2378#endif
1415#if EV_USE_KQUEUE 2379#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2380# include "ev_kqueue.c"
… …
1423#endif 2387#endif
1424#if EV_USE_SELECT 2388#if EV_USE_SELECT
1425# include "ev_select.c" 2389# include "ev_select.c"
1426#endif 2390#endif
1427 2391
1428int 2392int ecb_cold
1429ev_version_major (void) 2393ev_version_major (void) EV_THROW
1430{ 2394{
1431 return EV_VERSION_MAJOR; 2395 return EV_VERSION_MAJOR;
1432} 2396}
1433 2397
1434int 2398int ecb_cold
1435ev_version_minor (void) 2399ev_version_minor (void) EV_THROW
1436{ 2400{
1437 return EV_VERSION_MINOR; 2401 return EV_VERSION_MINOR;
1438} 2402}
1439 2403
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2404/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2405int inline_size ecb_cold
1442enable_secure (void) 2406enable_secure (void)
1443{ 2407{
1444#ifdef _WIN32 2408#ifdef _WIN32
1445 return 0; 2409 return 0;
1446#else 2410#else
1447 return getuid () != geteuid () 2411 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2412 || getgid () != getegid ();
1449#endif 2413#endif
1450} 2414}
1451 2415
1452unsigned int 2416unsigned int ecb_cold
1453ev_supported_backends (void) 2417ev_supported_backends (void) EV_THROW
1454{ 2418{
1455 unsigned int flags = 0; 2419 unsigned int flags = 0;
1456 2420
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2422 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2425 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2426
1463 return flags; 2427 return flags;
1464} 2428}
1465 2429
1466unsigned int 2430unsigned int ecb_cold
1467ev_recommended_backends (void) 2431ev_recommended_backends (void) EV_THROW
1468{ 2432{
1469 unsigned int flags = ev_supported_backends (); 2433 unsigned int flags = ev_supported_backends ();
1470 2434
1471#ifndef __NetBSD__ 2435#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2436 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2440#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2441 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2444#endif
2445#ifdef __FreeBSD__
2446 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2447#endif
1481 2448
1482 return flags; 2449 return flags;
1483} 2450}
1484 2451
2452unsigned int ecb_cold
2453ev_embeddable_backends (void) EV_THROW
2454{
2455 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2456
2457 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2458 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2459 flags &= ~EVBACKEND_EPOLL;
2460
2461 return flags;
2462}
2463
1485unsigned int 2464unsigned int
1486ev_embeddable_backends (void) 2465ev_backend (EV_P) EV_THROW
1487{ 2466{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2467 return backend;
1489
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */
1492 flags &= ~EVBACKEND_EPOLL;
1493
1494 return flags;
1495} 2468}
1496 2469
2470#if EV_FEATURE_API
1497unsigned int 2471unsigned int
1498ev_backend (EV_P) 2472ev_iteration (EV_P) EV_THROW
1499{ 2473{
1500 return backend; 2474 return loop_count;
1501} 2475}
1502 2476
1503#if EV_MINIMAL < 2
1504unsigned int 2477unsigned int
1505ev_loop_count (EV_P) 2478ev_depth (EV_P) EV_THROW
1506{
1507 return loop_count;
1508}
1509
1510unsigned int
1511ev_loop_depth (EV_P)
1512{ 2479{
1513 return loop_depth; 2480 return loop_depth;
1514} 2481}
1515 2482
1516void 2483void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2484ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1518{ 2485{
1519 io_blocktime = interval; 2486 io_blocktime = interval;
1520} 2487}
1521 2488
1522void 2489void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2490ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1524{ 2491{
1525 timeout_blocktime = interval; 2492 timeout_blocktime = interval;
1526} 2493}
1527 2494
1528void 2495void
1529ev_set_userdata (EV_P_ void *data) 2496ev_set_userdata (EV_P_ void *data) EV_THROW
1530{ 2497{
1531 userdata = data; 2498 userdata = data;
1532} 2499}
1533 2500
1534void * 2501void *
1535ev_userdata (EV_P) 2502ev_userdata (EV_P) EV_THROW
1536{ 2503{
1537 return userdata; 2504 return userdata;
1538} 2505}
1539 2506
2507void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2508ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1541{ 2509{
1542 invoke_cb = invoke_pending_cb; 2510 invoke_cb = invoke_pending_cb;
1543} 2511}
1544 2512
2513void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2514ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1546{ 2515{
1547 release_cb = release; 2516 release_cb = release;
1548 acquire_cb = acquire; 2517 acquire_cb = acquire;
1549} 2518}
1550#endif 2519#endif
1551 2520
1552/* initialise a loop structure, must be zero-initialised */ 2521/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2522static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2523loop_init (EV_P_ unsigned int flags) EV_THROW
1555{ 2524{
1556 if (!backend) 2525 if (!backend)
1557 { 2526 {
2527 origflags = flags;
2528
1558#if EV_USE_REALTIME 2529#if EV_USE_REALTIME
1559 if (!have_realtime) 2530 if (!have_realtime)
1560 { 2531 {
1561 struct timespec ts; 2532 struct timespec ts;
1562 2533
… …
1584 if (!(flags & EVFLAG_NOENV) 2555 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2556 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2557 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2558 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2559
1589 ev_rt_now = ev_time (); 2560 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2561 mn_now = get_clock ();
1591 now_floor = mn_now; 2562 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2563 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2564#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2565 invoke_cb = ev_invoke_pending;
1595#endif 2566#endif
1596 2567
1597 io_blocktime = 0.; 2568 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2569 timeout_blocktime = 0.;
1599 backend = 0; 2570 backend = 0;
1600 backend_fd = -1; 2571 backend_fd = -1;
1601 sig_pending = 0; 2572 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2573#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2574 async_pending = 0;
1604#endif 2575#endif
2576 pipe_write_skipped = 0;
2577 pipe_write_wanted = 0;
2578 evpipe [0] = -1;
2579 evpipe [1] = -1;
1605#if EV_USE_INOTIFY 2580#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2581 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2582#endif
1608#if EV_USE_SIGNALFD 2583#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2584 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2585#endif
1611 2586
1612 if (!(flags & 0x0000ffffU)) 2587 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2588 flags |= ev_recommended_backends ();
1614 2589
2590#if EV_USE_IOCP
2591 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2592#endif
1615#if EV_USE_PORT 2593#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2594 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2595#endif
1618#if EV_USE_KQUEUE 2596#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2597 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2606 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2607#endif
1630 2608
1631 ev_prepare_init (&pending_w, pendingcb); 2609 ev_prepare_init (&pending_w, pendingcb);
1632 2610
2611#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2612 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2613 ev_set_priority (&pipe_w, EV_MAXPRI);
2614#endif
1635 } 2615 }
1636} 2616}
1637 2617
1638/* free up a loop structure */ 2618/* free up a loop structure */
1639static void noinline 2619void ecb_cold
1640loop_destroy (EV_P) 2620ev_loop_destroy (EV_P)
1641{ 2621{
1642 int i; 2622 int i;
2623
2624#if EV_MULTIPLICITY
2625 /* mimic free (0) */
2626 if (!EV_A)
2627 return;
2628#endif
2629
2630#if EV_CLEANUP_ENABLE
2631 /* queue cleanup watchers (and execute them) */
2632 if (expect_false (cleanupcnt))
2633 {
2634 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2635 EV_INVOKE_PENDING;
2636 }
2637#endif
2638
2639#if EV_CHILD_ENABLE
2640 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2641 {
2642 ev_ref (EV_A); /* child watcher */
2643 ev_signal_stop (EV_A_ &childev);
2644 }
2645#endif
1643 2646
1644 if (ev_is_active (&pipe_w)) 2647 if (ev_is_active (&pipe_w))
1645 { 2648 {
1646 /*ev_ref (EV_A);*/ 2649 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2650 /*ev_io_stop (EV_A_ &pipe_w);*/
1648 2651
1649#if EV_USE_EVENTFD
1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]); 2652 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]); 2653 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1659 } 2654 }
1660 2655
1661#if EV_USE_SIGNALFD 2656#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2657 if (ev_is_active (&sigfd_w))
1663 close (sigfd); 2658 close (sigfd);
… …
1669#endif 2664#endif
1670 2665
1671 if (backend_fd >= 0) 2666 if (backend_fd >= 0)
1672 close (backend_fd); 2667 close (backend_fd);
1673 2668
2669#if EV_USE_IOCP
2670 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2671#endif
1674#if EV_USE_PORT 2672#if EV_USE_PORT
1675 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2673 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1676#endif 2674#endif
1677#if EV_USE_KQUEUE 2675#if EV_USE_KQUEUE
1678 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2676 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1705 array_free (periodic, EMPTY); 2703 array_free (periodic, EMPTY);
1706#endif 2704#endif
1707#if EV_FORK_ENABLE 2705#if EV_FORK_ENABLE
1708 array_free (fork, EMPTY); 2706 array_free (fork, EMPTY);
1709#endif 2707#endif
2708#if EV_CLEANUP_ENABLE
2709 array_free (cleanup, EMPTY);
2710#endif
1710 array_free (prepare, EMPTY); 2711 array_free (prepare, EMPTY);
1711 array_free (check, EMPTY); 2712 array_free (check, EMPTY);
1712#if EV_ASYNC_ENABLE 2713#if EV_ASYNC_ENABLE
1713 array_free (async, EMPTY); 2714 array_free (async, EMPTY);
1714#endif 2715#endif
1715 2716
1716 backend = 0; 2717 backend = 0;
2718
2719#if EV_MULTIPLICITY
2720 if (ev_is_default_loop (EV_A))
2721#endif
2722 ev_default_loop_ptr = 0;
2723#if EV_MULTIPLICITY
2724 else
2725 ev_free (EV_A);
2726#endif
1717} 2727}
1718 2728
1719#if EV_USE_INOTIFY 2729#if EV_USE_INOTIFY
1720inline_size void infy_fork (EV_P); 2730inline_size void infy_fork (EV_P);
1721#endif 2731#endif
… …
1734#endif 2744#endif
1735#if EV_USE_INOTIFY 2745#if EV_USE_INOTIFY
1736 infy_fork (EV_A); 2746 infy_fork (EV_A);
1737#endif 2747#endif
1738 2748
2749#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1739 if (ev_is_active (&pipe_w)) 2750 if (ev_is_active (&pipe_w))
1740 { 2751 {
1741 /* this "locks" the handlers against writing to the pipe */ 2752 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1742 /* while we modify the fd vars */
1743 sig_pending = 1;
1744#if EV_ASYNC_ENABLE
1745 async_pending = 1;
1746#endif
1747 2753
1748 ev_ref (EV_A); 2754 ev_ref (EV_A);
1749 ev_io_stop (EV_A_ &pipe_w); 2755 ev_io_stop (EV_A_ &pipe_w);
1750 2756
1751#if EV_USE_EVENTFD
1752 if (evfd >= 0)
1753 close (evfd);
1754#endif
1755
1756 if (evpipe [0] >= 0) 2757 if (evpipe [0] >= 0)
1757 {
1758 EV_WIN32_CLOSE_FD (evpipe [0]); 2758 EV_WIN32_CLOSE_FD (evpipe [0]);
1759 EV_WIN32_CLOSE_FD (evpipe [1]);
1760 }
1761 2759
1762 evpipe_init (EV_A); 2760 evpipe_init (EV_A);
1763 /* now iterate over everything, in case we missed something */ 2761 /* iterate over everything, in case we missed something before */
1764 pipecb (EV_A_ &pipe_w, EV_READ); 2762 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1765 } 2763 }
2764#endif
1766 2765
1767 postfork = 0; 2766 postfork = 0;
1768} 2767}
1769 2768
1770#if EV_MULTIPLICITY 2769#if EV_MULTIPLICITY
1771 2770
1772struct ev_loop * 2771struct ev_loop * ecb_cold
1773ev_loop_new (unsigned int flags) 2772ev_loop_new (unsigned int flags) EV_THROW
1774{ 2773{
1775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2774 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1776 2775
1777 memset (EV_A, 0, sizeof (struct ev_loop)); 2776 memset (EV_A, 0, sizeof (struct ev_loop));
1778 loop_init (EV_A_ flags); 2777 loop_init (EV_A_ flags);
1779 2778
1780 if (ev_backend (EV_A)) 2779 if (ev_backend (EV_A))
1781 return EV_A; 2780 return EV_A;
1782 2781
2782 ev_free (EV_A);
1783 return 0; 2783 return 0;
1784} 2784}
1785 2785
1786void
1787ev_loop_destroy (EV_P)
1788{
1789 loop_destroy (EV_A);
1790 ev_free (loop);
1791}
1792
1793void
1794ev_loop_fork (EV_P)
1795{
1796 postfork = 1; /* must be in line with ev_default_fork */
1797}
1798#endif /* multiplicity */ 2786#endif /* multiplicity */
1799 2787
1800#if EV_VERIFY 2788#if EV_VERIFY
1801static void noinline 2789static void noinline ecb_cold
1802verify_watcher (EV_P_ W w) 2790verify_watcher (EV_P_ W w)
1803{ 2791{
1804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2792 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1805 2793
1806 if (w->pending) 2794 if (w->pending)
1807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2795 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1808} 2796}
1809 2797
1810static void noinline 2798static void noinline ecb_cold
1811verify_heap (EV_P_ ANHE *heap, int N) 2799verify_heap (EV_P_ ANHE *heap, int N)
1812{ 2800{
1813 int i; 2801 int i;
1814 2802
1815 for (i = HEAP0; i < N + HEAP0; ++i) 2803 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1820 2808
1821 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2809 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1822 } 2810 }
1823} 2811}
1824 2812
1825static void noinline 2813static void noinline ecb_cold
1826array_verify (EV_P_ W *ws, int cnt) 2814array_verify (EV_P_ W *ws, int cnt)
1827{ 2815{
1828 while (cnt--) 2816 while (cnt--)
1829 { 2817 {
1830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2818 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1831 verify_watcher (EV_A_ ws [cnt]); 2819 verify_watcher (EV_A_ ws [cnt]);
1832 } 2820 }
1833} 2821}
1834#endif 2822#endif
1835 2823
1836#if EV_MINIMAL < 2 2824#if EV_FEATURE_API
1837void 2825void ecb_cold
1838ev_loop_verify (EV_P) 2826ev_verify (EV_P) EV_THROW
1839{ 2827{
1840#if EV_VERIFY 2828#if EV_VERIFY
1841 int i; 2829 int i;
1842 WL w; 2830 WL w, w2;
1843 2831
1844 assert (activecnt >= -1); 2832 assert (activecnt >= -1);
1845 2833
1846 assert (fdchangemax >= fdchangecnt); 2834 assert (fdchangemax >= fdchangecnt);
1847 for (i = 0; i < fdchangecnt; ++i) 2835 for (i = 0; i < fdchangecnt; ++i)
1848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2836 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1849 2837
1850 assert (anfdmax >= 0); 2838 assert (anfdmax >= 0);
1851 for (i = 0; i < anfdmax; ++i) 2839 for (i = 0; i < anfdmax; ++i)
2840 {
2841 int j = 0;
2842
1852 for (w = anfds [i].head; w; w = w->next) 2843 for (w = w2 = anfds [i].head; w; w = w->next)
1853 { 2844 {
1854 verify_watcher (EV_A_ (W)w); 2845 verify_watcher (EV_A_ (W)w);
2846
2847 if (j++ & 1)
2848 {
2849 assert (("libev: io watcher list contains a loop", w != w2));
2850 w2 = w2->next;
2851 }
2852
1855 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2853 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1856 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2854 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1857 } 2855 }
2856 }
1858 2857
1859 assert (timermax >= timercnt); 2858 assert (timermax >= timercnt);
1860 verify_heap (EV_A_ timers, timercnt); 2859 verify_heap (EV_A_ timers, timercnt);
1861 2860
1862#if EV_PERIODIC_ENABLE 2861#if EV_PERIODIC_ENABLE
… …
1877#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
1878 assert (forkmax >= forkcnt); 2877 assert (forkmax >= forkcnt);
1879 array_verify (EV_A_ (W *)forks, forkcnt); 2878 array_verify (EV_A_ (W *)forks, forkcnt);
1880#endif 2879#endif
1881 2880
2881#if EV_CLEANUP_ENABLE
2882 assert (cleanupmax >= cleanupcnt);
2883 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2884#endif
2885
1882#if EV_ASYNC_ENABLE 2886#if EV_ASYNC_ENABLE
1883 assert (asyncmax >= asynccnt); 2887 assert (asyncmax >= asynccnt);
1884 array_verify (EV_A_ (W *)asyncs, asynccnt); 2888 array_verify (EV_A_ (W *)asyncs, asynccnt);
1885#endif 2889#endif
1886 2890
2891#if EV_PREPARE_ENABLE
1887 assert (preparemax >= preparecnt); 2892 assert (preparemax >= preparecnt);
1888 array_verify (EV_A_ (W *)prepares, preparecnt); 2893 array_verify (EV_A_ (W *)prepares, preparecnt);
2894#endif
1889 2895
2896#if EV_CHECK_ENABLE
1890 assert (checkmax >= checkcnt); 2897 assert (checkmax >= checkcnt);
1891 array_verify (EV_A_ (W *)checks, checkcnt); 2898 array_verify (EV_A_ (W *)checks, checkcnt);
2899#endif
1892 2900
1893# if 0 2901# if 0
2902#if EV_CHILD_ENABLE
1894 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2903 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1895 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2904 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2905#endif
1896# endif 2906# endif
1897#endif 2907#endif
1898} 2908}
1899#endif 2909#endif
1900 2910
1901#if EV_MULTIPLICITY 2911#if EV_MULTIPLICITY
1902struct ev_loop * 2912struct ev_loop * ecb_cold
1903ev_default_loop_init (unsigned int flags)
1904#else 2913#else
1905int 2914int
2915#endif
1906ev_default_loop (unsigned int flags) 2916ev_default_loop (unsigned int flags) EV_THROW
1907#endif
1908{ 2917{
1909 if (!ev_default_loop_ptr) 2918 if (!ev_default_loop_ptr)
1910 { 2919 {
1911#if EV_MULTIPLICITY 2920#if EV_MULTIPLICITY
1912 EV_P = ev_default_loop_ptr = &default_loop_struct; 2921 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1916 2925
1917 loop_init (EV_A_ flags); 2926 loop_init (EV_A_ flags);
1918 2927
1919 if (ev_backend (EV_A)) 2928 if (ev_backend (EV_A))
1920 { 2929 {
1921#ifndef _WIN32 2930#if EV_CHILD_ENABLE
1922 ev_signal_init (&childev, childcb, SIGCHLD); 2931 ev_signal_init (&childev, childcb, SIGCHLD);
1923 ev_set_priority (&childev, EV_MAXPRI); 2932 ev_set_priority (&childev, EV_MAXPRI);
1924 ev_signal_start (EV_A_ &childev); 2933 ev_signal_start (EV_A_ &childev);
1925 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2934 ev_unref (EV_A); /* child watcher should not keep loop alive */
1926#endif 2935#endif
… …
1931 2940
1932 return ev_default_loop_ptr; 2941 return ev_default_loop_ptr;
1933} 2942}
1934 2943
1935void 2944void
1936ev_default_destroy (void) 2945ev_loop_fork (EV_P) EV_THROW
1937{ 2946{
1938#if EV_MULTIPLICITY 2947 postfork = 1;
1939 EV_P = ev_default_loop_ptr;
1940#endif
1941
1942 ev_default_loop_ptr = 0;
1943
1944#ifndef _WIN32
1945 ev_ref (EV_A); /* child watcher */
1946 ev_signal_stop (EV_A_ &childev);
1947#endif
1948
1949 loop_destroy (EV_A);
1950}
1951
1952void
1953ev_default_fork (void)
1954{
1955#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr;
1957#endif
1958
1959 postfork = 1; /* must be in line with ev_loop_fork */
1960} 2948}
1961 2949
1962/*****************************************************************************/ 2950/*****************************************************************************/
1963 2951
1964void 2952void
… …
1966{ 2954{
1967 EV_CB_INVOKE ((W)w, revents); 2955 EV_CB_INVOKE ((W)w, revents);
1968} 2956}
1969 2957
1970unsigned int 2958unsigned int
1971ev_pending_count (EV_P) 2959ev_pending_count (EV_P) EV_THROW
1972{ 2960{
1973 int pri; 2961 int pri;
1974 unsigned int count = 0; 2962 unsigned int count = 0;
1975 2963
1976 for (pri = NUMPRI; pri--; ) 2964 for (pri = NUMPRI; pri--; )
… …
1980} 2968}
1981 2969
1982void noinline 2970void noinline
1983ev_invoke_pending (EV_P) 2971ev_invoke_pending (EV_P)
1984{ 2972{
1985 int pri; 2973 pendingpri = NUMPRI;
1986 2974
1987 for (pri = NUMPRI; pri--; ) 2975 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2976 {
2977 --pendingpri;
2978
1988 while (pendingcnt [pri]) 2979 while (pendingcnt [pendingpri])
1989 { 2980 {
1990 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2981 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1991 2982
1992 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1993 /* ^ this is no longer true, as pending_w could be here */
1994
1995 p->w->pending = 0; 2983 p->w->pending = 0;
1996 EV_CB_INVOKE (p->w, p->events); 2984 EV_CB_INVOKE (p->w, p->events);
1997 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
1998 } 2986 }
2987 }
1999} 2988}
2000 2989
2001#if EV_IDLE_ENABLE 2990#if EV_IDLE_ENABLE
2002/* make idle watchers pending. this handles the "call-idle */ 2991/* make idle watchers pending. this handles the "call-idle */
2003/* only when higher priorities are idle" logic */ 2992/* only when higher priorities are idle" logic */
… …
2055 EV_FREQUENT_CHECK; 3044 EV_FREQUENT_CHECK;
2056 feed_reverse (EV_A_ (W)w); 3045 feed_reverse (EV_A_ (W)w);
2057 } 3046 }
2058 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3047 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2059 3048
2060 feed_reverse_done (EV_A_ EV_TIMEOUT); 3049 feed_reverse_done (EV_A_ EV_TIMER);
2061 } 3050 }
2062} 3051}
2063 3052
2064#if EV_PERIODIC_ENABLE 3053#if EV_PERIODIC_ENABLE
3054
3055static void noinline
3056periodic_recalc (EV_P_ ev_periodic *w)
3057{
3058 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3059 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3060
3061 /* the above almost always errs on the low side */
3062 while (at <= ev_rt_now)
3063 {
3064 ev_tstamp nat = at + w->interval;
3065
3066 /* when resolution fails us, we use ev_rt_now */
3067 if (expect_false (nat == at))
3068 {
3069 at = ev_rt_now;
3070 break;
3071 }
3072
3073 at = nat;
3074 }
3075
3076 ev_at (w) = at;
3077}
3078
2065/* make periodics pending */ 3079/* make periodics pending */
2066inline_size void 3080inline_size void
2067periodics_reify (EV_P) 3081periodics_reify (EV_P)
2068{ 3082{
2069 EV_FREQUENT_CHECK; 3083 EV_FREQUENT_CHECK;
2070 3084
2071 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3085 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2072 { 3086 {
2073 int feed_count = 0;
2074
2075 do 3087 do
2076 { 3088 {
2077 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3089 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2078 3090
2079 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3091 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2088 ANHE_at_cache (periodics [HEAP0]); 3100 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 3101 downheap (periodics, periodiccnt, HEAP0);
2090 } 3102 }
2091 else if (w->interval) 3103 else if (w->interval)
2092 { 3104 {
2093 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3105 periodic_recalc (EV_A_ w);
2094 /* if next trigger time is not sufficiently in the future, put it there */
2095 /* this might happen because of floating point inexactness */
2096 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2097 {
2098 ev_at (w) += w->interval;
2099
2100 /* if interval is unreasonably low we might still have a time in the past */
2101 /* so correct this. this will make the periodic very inexact, but the user */
2102 /* has effectively asked to get triggered more often than possible */
2103 if (ev_at (w) < ev_rt_now)
2104 ev_at (w) = ev_rt_now;
2105 }
2106
2107 ANHE_at_cache (periodics [HEAP0]); 3106 ANHE_at_cache (periodics [HEAP0]);
2108 downheap (periodics, periodiccnt, HEAP0); 3107 downheap (periodics, periodiccnt, HEAP0);
2109 } 3108 }
2110 else 3109 else
2111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3110 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2118 feed_reverse_done (EV_A_ EV_PERIODIC); 3117 feed_reverse_done (EV_A_ EV_PERIODIC);
2119 } 3118 }
2120} 3119}
2121 3120
2122/* simply recalculate all periodics */ 3121/* simply recalculate all periodics */
2123/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3122/* TODO: maybe ensure that at least one event happens when jumping forward? */
2124static void noinline 3123static void noinline ecb_cold
2125periodics_reschedule (EV_P) 3124periodics_reschedule (EV_P)
2126{ 3125{
2127 int i; 3126 int i;
2128 3127
2129 /* adjust periodics after time jump */ 3128 /* adjust periodics after time jump */
… …
2132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2133 3132
2134 if (w->reschedule_cb) 3133 if (w->reschedule_cb)
2135 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3134 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2136 else if (w->interval) 3135 else if (w->interval)
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3136 periodic_recalc (EV_A_ w);
2138 3137
2139 ANHE_at_cache (periodics [i]); 3138 ANHE_at_cache (periodics [i]);
2140 } 3139 }
2141 3140
2142 reheap (periodics, periodiccnt); 3141 reheap (periodics, periodiccnt);
2143} 3142}
2144#endif 3143#endif
2145 3144
2146/* adjust all timers by a given offset */ 3145/* adjust all timers by a given offset */
2147static void noinline 3146static void noinline ecb_cold
2148timers_reschedule (EV_P_ ev_tstamp adjust) 3147timers_reschedule (EV_P_ ev_tstamp adjust)
2149{ 3148{
2150 int i; 3149 int i;
2151 3150
2152 for (i = 0; i < timercnt; ++i) 3151 for (i = 0; i < timercnt; ++i)
… …
2156 ANHE_at_cache (*he); 3155 ANHE_at_cache (*he);
2157 } 3156 }
2158} 3157}
2159 3158
2160/* fetch new monotonic and realtime times from the kernel */ 3159/* fetch new monotonic and realtime times from the kernel */
2161/* also detetc if there was a timejump, and act accordingly */ 3160/* also detect if there was a timejump, and act accordingly */
2162inline_speed void 3161inline_speed void
2163time_update (EV_P_ ev_tstamp max_block) 3162time_update (EV_P_ ev_tstamp max_block)
2164{ 3163{
2165#if EV_USE_MONOTONIC 3164#if EV_USE_MONOTONIC
2166 if (expect_true (have_monotonic)) 3165 if (expect_true (have_monotonic))
… …
2189 * doesn't hurt either as we only do this on time-jumps or 3188 * doesn't hurt either as we only do this on time-jumps or
2190 * in the unlikely event of having been preempted here. 3189 * in the unlikely event of having been preempted here.
2191 */ 3190 */
2192 for (i = 4; --i; ) 3191 for (i = 4; --i; )
2193 { 3192 {
3193 ev_tstamp diff;
2194 rtmn_diff = ev_rt_now - mn_now; 3194 rtmn_diff = ev_rt_now - mn_now;
2195 3195
3196 diff = odiff - rtmn_diff;
3197
2196 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3198 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2197 return; /* all is well */ 3199 return; /* all is well */
2198 3200
2199 ev_rt_now = ev_time (); 3201 ev_rt_now = ev_time ();
2200 mn_now = get_clock (); 3202 mn_now = get_clock ();
2201 now_floor = mn_now; 3203 now_floor = mn_now;
… …
2223 3225
2224 mn_now = ev_rt_now; 3226 mn_now = ev_rt_now;
2225 } 3227 }
2226} 3228}
2227 3229
2228void 3230int
2229ev_loop (EV_P_ int flags) 3231ev_run (EV_P_ int flags)
2230{ 3232{
2231#if EV_MINIMAL < 2 3233#if EV_FEATURE_API
2232 ++loop_depth; 3234 ++loop_depth;
2233#endif 3235#endif
2234 3236
2235 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3237 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2236 3238
2237 loop_done = EVUNLOOP_CANCEL; 3239 loop_done = EVBREAK_CANCEL;
2238 3240
2239 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3241 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2240 3242
2241 do 3243 do
2242 { 3244 {
2243#if EV_VERIFY >= 2 3245#if EV_VERIFY >= 2
2244 ev_loop_verify (EV_A); 3246 ev_verify (EV_A);
2245#endif 3247#endif
2246 3248
2247#ifndef _WIN32 3249#ifndef _WIN32
2248 if (expect_false (curpid)) /* penalise the forking check even more */ 3250 if (expect_false (curpid)) /* penalise the forking check even more */
2249 if (expect_false (getpid () != curpid)) 3251 if (expect_false (getpid () != curpid))
… …
2261 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3263 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2262 EV_INVOKE_PENDING; 3264 EV_INVOKE_PENDING;
2263 } 3265 }
2264#endif 3266#endif
2265 3267
3268#if EV_PREPARE_ENABLE
2266 /* queue prepare watchers (and execute them) */ 3269 /* queue prepare watchers (and execute them) */
2267 if (expect_false (preparecnt)) 3270 if (expect_false (preparecnt))
2268 { 3271 {
2269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3272 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2270 EV_INVOKE_PENDING; 3273 EV_INVOKE_PENDING;
2271 } 3274 }
3275#endif
2272 3276
2273 if (expect_false (loop_done)) 3277 if (expect_false (loop_done))
2274 break; 3278 break;
2275 3279
2276 /* we might have forked, so reify kernel state if necessary */ 3280 /* we might have forked, so reify kernel state if necessary */
… …
2283 /* calculate blocking time */ 3287 /* calculate blocking time */
2284 { 3288 {
2285 ev_tstamp waittime = 0.; 3289 ev_tstamp waittime = 0.;
2286 ev_tstamp sleeptime = 0.; 3290 ev_tstamp sleeptime = 0.;
2287 3291
3292 /* remember old timestamp for io_blocktime calculation */
3293 ev_tstamp prev_mn_now = mn_now;
3294
3295 /* update time to cancel out callback processing overhead */
3296 time_update (EV_A_ 1e100);
3297
3298 /* from now on, we want a pipe-wake-up */
3299 pipe_write_wanted = 1;
3300
3301 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3302
2288 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3303 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2289 { 3304 {
2290 /* remember old timestamp for io_blocktime calculation */
2291 ev_tstamp prev_mn_now = mn_now;
2292
2293 /* update time to cancel out callback processing overhead */
2294 time_update (EV_A_ 1e100);
2295
2296 waittime = MAX_BLOCKTIME; 3305 waittime = MAX_BLOCKTIME;
2297 3306
2298 if (timercnt) 3307 if (timercnt)
2299 { 3308 {
2300 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3309 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2301 if (waittime > to) waittime = to; 3310 if (waittime > to) waittime = to;
2302 } 3311 }
2303 3312
2304#if EV_PERIODIC_ENABLE 3313#if EV_PERIODIC_ENABLE
2305 if (periodiccnt) 3314 if (periodiccnt)
2306 { 3315 {
2307 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3316 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2308 if (waittime > to) waittime = to; 3317 if (waittime > to) waittime = to;
2309 } 3318 }
2310#endif 3319#endif
2311 3320
2312 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3321 /* don't let timeouts decrease the waittime below timeout_blocktime */
2313 if (expect_false (waittime < timeout_blocktime)) 3322 if (expect_false (waittime < timeout_blocktime))
2314 waittime = timeout_blocktime; 3323 waittime = timeout_blocktime;
3324
3325 /* at this point, we NEED to wait, so we have to ensure */
3326 /* to pass a minimum nonzero value to the backend */
3327 if (expect_false (waittime < backend_mintime))
3328 waittime = backend_mintime;
2315 3329
2316 /* extra check because io_blocktime is commonly 0 */ 3330 /* extra check because io_blocktime is commonly 0 */
2317 if (expect_false (io_blocktime)) 3331 if (expect_false (io_blocktime))
2318 { 3332 {
2319 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3333 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2320 3334
2321 if (sleeptime > waittime - backend_fudge) 3335 if (sleeptime > waittime - backend_mintime)
2322 sleeptime = waittime - backend_fudge; 3336 sleeptime = waittime - backend_mintime;
2323 3337
2324 if (expect_true (sleeptime > 0.)) 3338 if (expect_true (sleeptime > 0.))
2325 { 3339 {
2326 ev_sleep (sleeptime); 3340 ev_sleep (sleeptime);
2327 waittime -= sleeptime; 3341 waittime -= sleeptime;
2328 } 3342 }
2329 } 3343 }
2330 } 3344 }
2331 3345
2332#if EV_MINIMAL < 2 3346#if EV_FEATURE_API
2333 ++loop_count; 3347 ++loop_count;
2334#endif 3348#endif
2335 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3349 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2336 backend_poll (EV_A_ waittime); 3350 backend_poll (EV_A_ waittime);
2337 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3351 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3352
3353 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3354
3355 ECB_MEMORY_FENCE_ACQUIRE;
3356 if (pipe_write_skipped)
3357 {
3358 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3359 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3360 }
3361
2338 3362
2339 /* update ev_rt_now, do magic */ 3363 /* update ev_rt_now, do magic */
2340 time_update (EV_A_ waittime + sleeptime); 3364 time_update (EV_A_ waittime + sleeptime);
2341 } 3365 }
2342 3366
… …
2349#if EV_IDLE_ENABLE 3373#if EV_IDLE_ENABLE
2350 /* queue idle watchers unless other events are pending */ 3374 /* queue idle watchers unless other events are pending */
2351 idle_reify (EV_A); 3375 idle_reify (EV_A);
2352#endif 3376#endif
2353 3377
3378#if EV_CHECK_ENABLE
2354 /* queue check watchers, to be executed first */ 3379 /* queue check watchers, to be executed first */
2355 if (expect_false (checkcnt)) 3380 if (expect_false (checkcnt))
2356 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3381 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3382#endif
2357 3383
2358 EV_INVOKE_PENDING; 3384 EV_INVOKE_PENDING;
2359 } 3385 }
2360 while (expect_true ( 3386 while (expect_true (
2361 activecnt 3387 activecnt
2362 && !loop_done 3388 && !loop_done
2363 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3389 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2364 )); 3390 ));
2365 3391
2366 if (loop_done == EVUNLOOP_ONE) 3392 if (loop_done == EVBREAK_ONE)
2367 loop_done = EVUNLOOP_CANCEL; 3393 loop_done = EVBREAK_CANCEL;
2368 3394
2369#if EV_MINIMAL < 2 3395#if EV_FEATURE_API
2370 --loop_depth; 3396 --loop_depth;
2371#endif 3397#endif
3398
3399 return activecnt;
2372} 3400}
2373 3401
2374void 3402void
2375ev_unloop (EV_P_ int how) 3403ev_break (EV_P_ int how) EV_THROW
2376{ 3404{
2377 loop_done = how; 3405 loop_done = how;
2378} 3406}
2379 3407
2380void 3408void
2381ev_ref (EV_P) 3409ev_ref (EV_P) EV_THROW
2382{ 3410{
2383 ++activecnt; 3411 ++activecnt;
2384} 3412}
2385 3413
2386void 3414void
2387ev_unref (EV_P) 3415ev_unref (EV_P) EV_THROW
2388{ 3416{
2389 --activecnt; 3417 --activecnt;
2390} 3418}
2391 3419
2392void 3420void
2393ev_now_update (EV_P) 3421ev_now_update (EV_P) EV_THROW
2394{ 3422{
2395 time_update (EV_A_ 1e100); 3423 time_update (EV_A_ 1e100);
2396} 3424}
2397 3425
2398void 3426void
2399ev_suspend (EV_P) 3427ev_suspend (EV_P) EV_THROW
2400{ 3428{
2401 ev_now_update (EV_A); 3429 ev_now_update (EV_A);
2402} 3430}
2403 3431
2404void 3432void
2405ev_resume (EV_P) 3433ev_resume (EV_P) EV_THROW
2406{ 3434{
2407 ev_tstamp mn_prev = mn_now; 3435 ev_tstamp mn_prev = mn_now;
2408 3436
2409 ev_now_update (EV_A); 3437 ev_now_update (EV_A);
2410 timers_reschedule (EV_A_ mn_now - mn_prev); 3438 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2449 w->pending = 0; 3477 w->pending = 0;
2450 } 3478 }
2451} 3479}
2452 3480
2453int 3481int
2454ev_clear_pending (EV_P_ void *w) 3482ev_clear_pending (EV_P_ void *w) EV_THROW
2455{ 3483{
2456 W w_ = (W)w; 3484 W w_ = (W)w;
2457 int pending = w_->pending; 3485 int pending = w_->pending;
2458 3486
2459 if (expect_true (pending)) 3487 if (expect_true (pending))
… …
2492} 3520}
2493 3521
2494/*****************************************************************************/ 3522/*****************************************************************************/
2495 3523
2496void noinline 3524void noinline
2497ev_io_start (EV_P_ ev_io *w) 3525ev_io_start (EV_P_ ev_io *w) EV_THROW
2498{ 3526{
2499 int fd = w->fd; 3527 int fd = w->fd;
2500 3528
2501 if (expect_false (ev_is_active (w))) 3529 if (expect_false (ev_is_active (w)))
2502 return; 3530 return;
2503 3531
2504 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3532 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2505 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3533 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2506 3534
2507 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2508 3536
2509 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2510 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3538 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2511 wlist_add (&anfds[fd].head, (WL)w); 3539 wlist_add (&anfds[fd].head, (WL)w);
2512 3540
3541 /* common bug, apparently */
3542 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3543
2513 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3544 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2514 w->events &= ~EV__IOFDSET; 3545 w->events &= ~EV__IOFDSET;
2515 3546
2516 EV_FREQUENT_CHECK; 3547 EV_FREQUENT_CHECK;
2517} 3548}
2518 3549
2519void noinline 3550void noinline
2520ev_io_stop (EV_P_ ev_io *w) 3551ev_io_stop (EV_P_ ev_io *w) EV_THROW
2521{ 3552{
2522 clear_pending (EV_A_ (W)w); 3553 clear_pending (EV_A_ (W)w);
2523 if (expect_false (!ev_is_active (w))) 3554 if (expect_false (!ev_is_active (w)))
2524 return; 3555 return;
2525 3556
… …
2528 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2529 3560
2530 wlist_del (&anfds[w->fd].head, (WL)w); 3561 wlist_del (&anfds[w->fd].head, (WL)w);
2531 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
2532 3563
2533 fd_change (EV_A_ w->fd, 1); 3564 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2534 3565
2535 EV_FREQUENT_CHECK; 3566 EV_FREQUENT_CHECK;
2536} 3567}
2537 3568
2538void noinline 3569void noinline
2539ev_timer_start (EV_P_ ev_timer *w) 3570ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2540{ 3571{
2541 if (expect_false (ev_is_active (w))) 3572 if (expect_false (ev_is_active (w)))
2542 return; 3573 return;
2543 3574
2544 ev_at (w) += mn_now; 3575 ev_at (w) += mn_now;
… …
2558 3589
2559 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3590 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2560} 3591}
2561 3592
2562void noinline 3593void noinline
2563ev_timer_stop (EV_P_ ev_timer *w) 3594ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2564{ 3595{
2565 clear_pending (EV_A_ (W)w); 3596 clear_pending (EV_A_ (W)w);
2566 if (expect_false (!ev_is_active (w))) 3597 if (expect_false (!ev_is_active (w)))
2567 return; 3598 return;
2568 3599
… …
2580 timers [active] = timers [timercnt + HEAP0]; 3611 timers [active] = timers [timercnt + HEAP0];
2581 adjustheap (timers, timercnt, active); 3612 adjustheap (timers, timercnt, active);
2582 } 3613 }
2583 } 3614 }
2584 3615
2585 EV_FREQUENT_CHECK;
2586
2587 ev_at (w) -= mn_now; 3616 ev_at (w) -= mn_now;
2588 3617
2589 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
3619
3620 EV_FREQUENT_CHECK;
2590} 3621}
2591 3622
2592void noinline 3623void noinline
2593ev_timer_again (EV_P_ ev_timer *w) 3624ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2594{ 3625{
2595 EV_FREQUENT_CHECK; 3626 EV_FREQUENT_CHECK;
3627
3628 clear_pending (EV_A_ (W)w);
2596 3629
2597 if (ev_is_active (w)) 3630 if (ev_is_active (w))
2598 { 3631 {
2599 if (w->repeat) 3632 if (w->repeat)
2600 { 3633 {
… …
2613 3646
2614 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2615} 3648}
2616 3649
2617ev_tstamp 3650ev_tstamp
2618ev_timer_remaining (EV_P_ ev_timer *w) 3651ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2619{ 3652{
2620 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3653 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2621} 3654}
2622 3655
2623#if EV_PERIODIC_ENABLE 3656#if EV_PERIODIC_ENABLE
2624void noinline 3657void noinline
2625ev_periodic_start (EV_P_ ev_periodic *w) 3658ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2626{ 3659{
2627 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
2628 return; 3661 return;
2629 3662
2630 if (w->reschedule_cb) 3663 if (w->reschedule_cb)
2631 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3664 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2632 else if (w->interval) 3665 else if (w->interval)
2633 { 3666 {
2634 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3667 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2635 /* this formula differs from the one in periodic_reify because we do not always round up */ 3668 periodic_recalc (EV_A_ w);
2636 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2637 } 3669 }
2638 else 3670 else
2639 ev_at (w) = w->offset; 3671 ev_at (w) = w->offset;
2640 3672
2641 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
… …
2651 3683
2652 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3684 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2653} 3685}
2654 3686
2655void noinline 3687void noinline
2656ev_periodic_stop (EV_P_ ev_periodic *w) 3688ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2657{ 3689{
2658 clear_pending (EV_A_ (W)w); 3690 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3691 if (expect_false (!ev_is_active (w)))
2660 return; 3692 return;
2661 3693
… …
2673 periodics [active] = periodics [periodiccnt + HEAP0]; 3705 periodics [active] = periodics [periodiccnt + HEAP0];
2674 adjustheap (periodics, periodiccnt, active); 3706 adjustheap (periodics, periodiccnt, active);
2675 } 3707 }
2676 } 3708 }
2677 3709
2678 EV_FREQUENT_CHECK;
2679
2680 ev_stop (EV_A_ (W)w); 3710 ev_stop (EV_A_ (W)w);
3711
3712 EV_FREQUENT_CHECK;
2681} 3713}
2682 3714
2683void noinline 3715void noinline
2684ev_periodic_again (EV_P_ ev_periodic *w) 3716ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2685{ 3717{
2686 /* TODO: use adjustheap and recalculation */ 3718 /* TODO: use adjustheap and recalculation */
2687 ev_periodic_stop (EV_A_ w); 3719 ev_periodic_stop (EV_A_ w);
2688 ev_periodic_start (EV_A_ w); 3720 ev_periodic_start (EV_A_ w);
2689} 3721}
… …
2691 3723
2692#ifndef SA_RESTART 3724#ifndef SA_RESTART
2693# define SA_RESTART 0 3725# define SA_RESTART 0
2694#endif 3726#endif
2695 3727
3728#if EV_SIGNAL_ENABLE
3729
2696void noinline 3730void noinline
2697ev_signal_start (EV_P_ ev_signal *w) 3731ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2698{ 3732{
2699 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
2700 return; 3734 return;
2701 3735
2702 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3736 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2704#if EV_MULTIPLICITY 3738#if EV_MULTIPLICITY
2705 assert (("libev: a signal must not be attached to two different loops", 3739 assert (("libev: a signal must not be attached to two different loops",
2706 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3740 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2707 3741
2708 signals [w->signum - 1].loop = EV_A; 3742 signals [w->signum - 1].loop = EV_A;
3743 ECB_MEMORY_FENCE_RELEASE;
2709#endif 3744#endif
2710 3745
2711 EV_FREQUENT_CHECK; 3746 EV_FREQUENT_CHECK;
2712 3747
2713#if EV_USE_SIGNALFD 3748#if EV_USE_SIGNALFD
… …
2746 if (!((WL)w)->next) 3781 if (!((WL)w)->next)
2747# if EV_USE_SIGNALFD 3782# if EV_USE_SIGNALFD
2748 if (sigfd < 0) /*TODO*/ 3783 if (sigfd < 0) /*TODO*/
2749# endif 3784# endif
2750 { 3785 {
2751# if _WIN32 3786# ifdef _WIN32
2752 evpipe_init (EV_A); 3787 evpipe_init (EV_A);
2753 3788
2754 signal (w->signum, ev_sighandler); 3789 signal (w->signum, ev_sighandler);
2755# else 3790# else
2756 struct sigaction sa; 3791 struct sigaction sa;
… …
2760 sa.sa_handler = ev_sighandler; 3795 sa.sa_handler = ev_sighandler;
2761 sigfillset (&sa.sa_mask); 3796 sigfillset (&sa.sa_mask);
2762 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3797 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2763 sigaction (w->signum, &sa, 0); 3798 sigaction (w->signum, &sa, 0);
2764 3799
3800 if (origflags & EVFLAG_NOSIGMASK)
3801 {
2765 sigemptyset (&sa.sa_mask); 3802 sigemptyset (&sa.sa_mask);
2766 sigaddset (&sa.sa_mask, w->signum); 3803 sigaddset (&sa.sa_mask, w->signum);
2767 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3804 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3805 }
2768#endif 3806#endif
2769 } 3807 }
2770 3808
2771 EV_FREQUENT_CHECK; 3809 EV_FREQUENT_CHECK;
2772} 3810}
2773 3811
2774void noinline 3812void noinline
2775ev_signal_stop (EV_P_ ev_signal *w) 3813ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2776{ 3814{
2777 clear_pending (EV_A_ (W)w); 3815 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 3816 if (expect_false (!ev_is_active (w)))
2779 return; 3817 return;
2780 3818
… …
2789 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3827 signals [w->signum - 1].loop = 0; /* unattach from signal */
2790#endif 3828#endif
2791#if EV_USE_SIGNALFD 3829#if EV_USE_SIGNALFD
2792 if (sigfd >= 0) 3830 if (sigfd >= 0)
2793 { 3831 {
2794 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3832 sigset_t ss;
3833
3834 sigemptyset (&ss);
3835 sigaddset (&ss, w->signum);
2795 sigdelset (&sigfd_set, w->signum); 3836 sigdelset (&sigfd_set, w->signum);
3837
2796 signalfd (sigfd, &sigfd_set, 0); 3838 signalfd (sigfd, &sigfd_set, 0);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3839 sigprocmask (SIG_UNBLOCK, &ss, 0);
2798 /*TODO: maybe unblock signal? */
2799 } 3840 }
2800 else 3841 else
2801#endif 3842#endif
2802 signal (w->signum, SIG_DFL); 3843 signal (w->signum, SIG_DFL);
2803 } 3844 }
2804 3845
2805 EV_FREQUENT_CHECK; 3846 EV_FREQUENT_CHECK;
2806} 3847}
2807 3848
3849#endif
3850
3851#if EV_CHILD_ENABLE
3852
2808void 3853void
2809ev_child_start (EV_P_ ev_child *w) 3854ev_child_start (EV_P_ ev_child *w) EV_THROW
2810{ 3855{
2811#if EV_MULTIPLICITY 3856#if EV_MULTIPLICITY
2812 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3857 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2813#endif 3858#endif
2814 if (expect_false (ev_is_active (w))) 3859 if (expect_false (ev_is_active (w)))
2815 return; 3860 return;
2816 3861
2817 EV_FREQUENT_CHECK; 3862 EV_FREQUENT_CHECK;
2818 3863
2819 ev_start (EV_A_ (W)w, 1); 3864 ev_start (EV_A_ (W)w, 1);
2820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3865 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2821 3866
2822 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2823} 3868}
2824 3869
2825void 3870void
2826ev_child_stop (EV_P_ ev_child *w) 3871ev_child_stop (EV_P_ ev_child *w) EV_THROW
2827{ 3872{
2828 clear_pending (EV_A_ (W)w); 3873 clear_pending (EV_A_ (W)w);
2829 if (expect_false (!ev_is_active (w))) 3874 if (expect_false (!ev_is_active (w)))
2830 return; 3875 return;
2831 3876
2832 EV_FREQUENT_CHECK; 3877 EV_FREQUENT_CHECK;
2833 3878
2834 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3879 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2835 ev_stop (EV_A_ (W)w); 3880 ev_stop (EV_A_ (W)w);
2836 3881
2837 EV_FREQUENT_CHECK; 3882 EV_FREQUENT_CHECK;
2838} 3883}
3884
3885#endif
2839 3886
2840#if EV_STAT_ENABLE 3887#if EV_STAT_ENABLE
2841 3888
2842# ifdef _WIN32 3889# ifdef _WIN32
2843# undef lstat 3890# undef lstat
… …
2849#define MIN_STAT_INTERVAL 0.1074891 3896#define MIN_STAT_INTERVAL 0.1074891
2850 3897
2851static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3898static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2852 3899
2853#if EV_USE_INOTIFY 3900#if EV_USE_INOTIFY
2854# define EV_INOTIFY_BUFSIZE 8192 3901
3902/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3903# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2855 3904
2856static void noinline 3905static void noinline
2857infy_add (EV_P_ ev_stat *w) 3906infy_add (EV_P_ ev_stat *w)
2858{ 3907{
2859 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3908 w->wd = inotify_add_watch (fs_fd, w->path,
3909 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3910 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3911 | IN_DONT_FOLLOW | IN_MASK_ADD);
2860 3912
2861 if (w->wd >= 0) 3913 if (w->wd >= 0)
2862 { 3914 {
2863 struct statfs sfs; 3915 struct statfs sfs;
2864 3916
… …
2868 3920
2869 if (!fs_2625) 3921 if (!fs_2625)
2870 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3922 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2871 else if (!statfs (w->path, &sfs) 3923 else if (!statfs (w->path, &sfs)
2872 && (sfs.f_type == 0x1373 /* devfs */ 3924 && (sfs.f_type == 0x1373 /* devfs */
3925 || sfs.f_type == 0x4006 /* fat */
3926 || sfs.f_type == 0x4d44 /* msdos */
2873 || sfs.f_type == 0xEF53 /* ext2/3 */ 3927 || sfs.f_type == 0xEF53 /* ext2/3 */
3928 || sfs.f_type == 0x72b6 /* jffs2 */
3929 || sfs.f_type == 0x858458f6 /* ramfs */
3930 || sfs.f_type == 0x5346544e /* ntfs */
2874 || sfs.f_type == 0x3153464a /* jfs */ 3931 || sfs.f_type == 0x3153464a /* jfs */
3932 || sfs.f_type == 0x9123683e /* btrfs */
2875 || sfs.f_type == 0x52654973 /* reiser3 */ 3933 || sfs.f_type == 0x52654973 /* reiser3 */
2876 || sfs.f_type == 0x01021994 /* tempfs */ 3934 || sfs.f_type == 0x01021994 /* tmpfs */
2877 || sfs.f_type == 0x58465342 /* xfs */)) 3935 || sfs.f_type == 0x58465342 /* xfs */))
2878 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2879 else 3937 else
2880 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2881 } 3939 }
… …
2902 if (!pend || pend == path) 3960 if (!pend || pend == path)
2903 break; 3961 break;
2904 3962
2905 *pend = 0; 3963 *pend = 0;
2906 w->wd = inotify_add_watch (fs_fd, path, mask); 3964 w->wd = inotify_add_watch (fs_fd, path, mask);
2907 } 3965 }
2908 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2909 } 3967 }
2910 } 3968 }
2911 3969
2912 if (w->wd >= 0) 3970 if (w->wd >= 0)
2913 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3971 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2914 3972
2915 /* now re-arm timer, if required */ 3973 /* now re-arm timer, if required */
2916 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3974 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2917 ev_timer_again (EV_A_ &w->timer); 3975 ev_timer_again (EV_A_ &w->timer);
2918 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3976 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2926 3984
2927 if (wd < 0) 3985 if (wd < 0)
2928 return; 3986 return;
2929 3987
2930 w->wd = -2; 3988 w->wd = -2;
2931 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3989 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2932 wlist_del (&fs_hash [slot].head, (WL)w); 3990 wlist_del (&fs_hash [slot].head, (WL)w);
2933 3991
2934 /* remove this watcher, if others are watching it, they will rearm */ 3992 /* remove this watcher, if others are watching it, they will rearm */
2935 inotify_rm_watch (fs_fd, wd); 3993 inotify_rm_watch (fs_fd, wd);
2936} 3994}
… …
2938static void noinline 3996static void noinline
2939infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3997infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2940{ 3998{
2941 if (slot < 0) 3999 if (slot < 0)
2942 /* overflow, need to check for all hash slots */ 4000 /* overflow, need to check for all hash slots */
2943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4001 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2944 infy_wd (EV_A_ slot, wd, ev); 4002 infy_wd (EV_A_ slot, wd, ev);
2945 else 4003 else
2946 { 4004 {
2947 WL w_; 4005 WL w_;
2948 4006
2949 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4007 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2950 { 4008 {
2951 ev_stat *w = (ev_stat *)w_; 4009 ev_stat *w = (ev_stat *)w_;
2952 w_ = w_->next; /* lets us remove this watcher and all before it */ 4010 w_ = w_->next; /* lets us remove this watcher and all before it */
2953 4011
2954 if (w->wd == wd || wd == -1) 4012 if (w->wd == wd || wd == -1)
2955 { 4013 {
2956 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4014 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2957 { 4015 {
2958 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4016 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2959 w->wd = -1; 4017 w->wd = -1;
2960 infy_add (EV_A_ w); /* re-add, no matter what */ 4018 infy_add (EV_A_ w); /* re-add, no matter what */
2961 } 4019 }
2962 4020
2963 stat_timer_cb (EV_A_ &w->timer, 0); 4021 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2968 4026
2969static void 4027static void
2970infy_cb (EV_P_ ev_io *w, int revents) 4028infy_cb (EV_P_ ev_io *w, int revents)
2971{ 4029{
2972 char buf [EV_INOTIFY_BUFSIZE]; 4030 char buf [EV_INOTIFY_BUFSIZE];
2973 struct inotify_event *ev = (struct inotify_event *)buf;
2974 int ofs; 4031 int ofs;
2975 int len = read (fs_fd, buf, sizeof (buf)); 4032 int len = read (fs_fd, buf, sizeof (buf));
2976 4033
2977 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4034 for (ofs = 0; ofs < len; )
4035 {
4036 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2978 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4037 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4038 ofs += sizeof (struct inotify_event) + ev->len;
4039 }
2979} 4040}
2980 4041
2981inline_size void 4042inline_size void ecb_cold
2982check_2625 (EV_P) 4043ev_check_2625 (EV_P)
2983{ 4044{
2984 /* kernels < 2.6.25 are borked 4045 /* kernels < 2.6.25 are borked
2985 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2986 */ 4047 */
2987 struct utsname buf; 4048 if (ev_linux_version () < 0x020619)
2988 int major, minor, micro;
2989
2990 if (uname (&buf))
2991 return;
2992
2993 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2994 return;
2995
2996 if (major < 2
2997 || (major == 2 && minor < 6)
2998 || (major == 2 && minor == 6 && micro < 25))
2999 return; 4049 return;
3000 4050
3001 fs_2625 = 1; 4051 fs_2625 = 1;
3002} 4052}
3003 4053
3004inline_size int 4054inline_size int
3005infy_newfd (void) 4055infy_newfd (void)
3006{ 4056{
3007#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4057#if defined IN_CLOEXEC && defined IN_NONBLOCK
3008 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3009 if (fd >= 0) 4059 if (fd >= 0)
3010 return fd; 4060 return fd;
3011#endif 4061#endif
3012 return inotify_init (); 4062 return inotify_init ();
… …
3018 if (fs_fd != -2) 4068 if (fs_fd != -2)
3019 return; 4069 return;
3020 4070
3021 fs_fd = -1; 4071 fs_fd = -1;
3022 4072
3023 check_2625 (EV_A); 4073 ev_check_2625 (EV_A);
3024 4074
3025 fs_fd = infy_newfd (); 4075 fs_fd = infy_newfd ();
3026 4076
3027 if (fs_fd >= 0) 4077 if (fs_fd >= 0)
3028 { 4078 {
… …
3053 ev_io_set (&fs_w, fs_fd, EV_READ); 4103 ev_io_set (&fs_w, fs_fd, EV_READ);
3054 ev_io_start (EV_A_ &fs_w); 4104 ev_io_start (EV_A_ &fs_w);
3055 ev_unref (EV_A); 4105 ev_unref (EV_A);
3056 } 4106 }
3057 4107
3058 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4108 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3059 { 4109 {
3060 WL w_ = fs_hash [slot].head; 4110 WL w_ = fs_hash [slot].head;
3061 fs_hash [slot].head = 0; 4111 fs_hash [slot].head = 0;
3062 4112
3063 while (w_) 4113 while (w_)
… …
3087#else 4137#else
3088# define EV_LSTAT(p,b) lstat (p, b) 4138# define EV_LSTAT(p,b) lstat (p, b)
3089#endif 4139#endif
3090 4140
3091void 4141void
3092ev_stat_stat (EV_P_ ev_stat *w) 4142ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3093{ 4143{
3094 if (lstat (w->path, &w->attr) < 0) 4144 if (lstat (w->path, &w->attr) < 0)
3095 w->attr.st_nlink = 0; 4145 w->attr.st_nlink = 0;
3096 else if (!w->attr.st_nlink) 4146 else if (!w->attr.st_nlink)
3097 w->attr.st_nlink = 1; 4147 w->attr.st_nlink = 1;
… …
3100static void noinline 4150static void noinline
3101stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4151stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3102{ 4152{
3103 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3104 4154
3105 /* we copy this here each the time so that */ 4155 ev_statdata prev = w->attr;
3106 /* prev has the old value when the callback gets invoked */
3107 w->prev = w->attr;
3108 ev_stat_stat (EV_A_ w); 4156 ev_stat_stat (EV_A_ w);
3109 4157
3110 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4158 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3111 if ( 4159 if (
3112 w->prev.st_dev != w->attr.st_dev 4160 prev.st_dev != w->attr.st_dev
3113 || w->prev.st_ino != w->attr.st_ino 4161 || prev.st_ino != w->attr.st_ino
3114 || w->prev.st_mode != w->attr.st_mode 4162 || prev.st_mode != w->attr.st_mode
3115 || w->prev.st_nlink != w->attr.st_nlink 4163 || prev.st_nlink != w->attr.st_nlink
3116 || w->prev.st_uid != w->attr.st_uid 4164 || prev.st_uid != w->attr.st_uid
3117 || w->prev.st_gid != w->attr.st_gid 4165 || prev.st_gid != w->attr.st_gid
3118 || w->prev.st_rdev != w->attr.st_rdev 4166 || prev.st_rdev != w->attr.st_rdev
3119 || w->prev.st_size != w->attr.st_size 4167 || prev.st_size != w->attr.st_size
3120 || w->prev.st_atime != w->attr.st_atime 4168 || prev.st_atime != w->attr.st_atime
3121 || w->prev.st_mtime != w->attr.st_mtime 4169 || prev.st_mtime != w->attr.st_mtime
3122 || w->prev.st_ctime != w->attr.st_ctime 4170 || prev.st_ctime != w->attr.st_ctime
3123 ) { 4171 ) {
4172 /* we only update w->prev on actual differences */
4173 /* in case we test more often than invoke the callback, */
4174 /* to ensure that prev is always different to attr */
4175 w->prev = prev;
4176
3124 #if EV_USE_INOTIFY 4177 #if EV_USE_INOTIFY
3125 if (fs_fd >= 0) 4178 if (fs_fd >= 0)
3126 { 4179 {
3127 infy_del (EV_A_ w); 4180 infy_del (EV_A_ w);
3128 infy_add (EV_A_ w); 4181 infy_add (EV_A_ w);
… …
3133 ev_feed_event (EV_A_ w, EV_STAT); 4186 ev_feed_event (EV_A_ w, EV_STAT);
3134 } 4187 }
3135} 4188}
3136 4189
3137void 4190void
3138ev_stat_start (EV_P_ ev_stat *w) 4191ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3139{ 4192{
3140 if (expect_false (ev_is_active (w))) 4193 if (expect_false (ev_is_active (w)))
3141 return; 4194 return;
3142 4195
3143 ev_stat_stat (EV_A_ w); 4196 ev_stat_stat (EV_A_ w);
… …
3164 4217
3165 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3166} 4219}
3167 4220
3168void 4221void
3169ev_stat_stop (EV_P_ ev_stat *w) 4222ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3170{ 4223{
3171 clear_pending (EV_A_ (W)w); 4224 clear_pending (EV_A_ (W)w);
3172 if (expect_false (!ev_is_active (w))) 4225 if (expect_false (!ev_is_active (w)))
3173 return; 4226 return;
3174 4227
… …
3190} 4243}
3191#endif 4244#endif
3192 4245
3193#if EV_IDLE_ENABLE 4246#if EV_IDLE_ENABLE
3194void 4247void
3195ev_idle_start (EV_P_ ev_idle *w) 4248ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3196{ 4249{
3197 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
3198 return; 4251 return;
3199 4252
3200 pri_adjust (EV_A_ (W)w); 4253 pri_adjust (EV_A_ (W)w);
… …
3213 4266
3214 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3215} 4268}
3216 4269
3217void 4270void
3218ev_idle_stop (EV_P_ ev_idle *w) 4271ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3219{ 4272{
3220 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3222 return; 4275 return;
3223 4276
… …
3235 4288
3236 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3237} 4290}
3238#endif 4291#endif
3239 4292
4293#if EV_PREPARE_ENABLE
3240void 4294void
3241ev_prepare_start (EV_P_ ev_prepare *w) 4295ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3242{ 4296{
3243 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3244 return; 4298 return;
3245 4299
3246 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
… …
3251 4305
3252 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3253} 4307}
3254 4308
3255void 4309void
3256ev_prepare_stop (EV_P_ ev_prepare *w) 4310ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3257{ 4311{
3258 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3259 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3260 return; 4314 return;
3261 4315
… …
3270 4324
3271 ev_stop (EV_A_ (W)w); 4325 ev_stop (EV_A_ (W)w);
3272 4326
3273 EV_FREQUENT_CHECK; 4327 EV_FREQUENT_CHECK;
3274} 4328}
4329#endif
3275 4330
4331#if EV_CHECK_ENABLE
3276void 4332void
3277ev_check_start (EV_P_ ev_check *w) 4333ev_check_start (EV_P_ ev_check *w) EV_THROW
3278{ 4334{
3279 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3280 return; 4336 return;
3281 4337
3282 EV_FREQUENT_CHECK; 4338 EV_FREQUENT_CHECK;
… …
3287 4343
3288 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3289} 4345}
3290 4346
3291void 4347void
3292ev_check_stop (EV_P_ ev_check *w) 4348ev_check_stop (EV_P_ ev_check *w) EV_THROW
3293{ 4349{
3294 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3295 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3296 return; 4352 return;
3297 4353
… …
3306 4362
3307 ev_stop (EV_A_ (W)w); 4363 ev_stop (EV_A_ (W)w);
3308 4364
3309 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3310} 4366}
4367#endif
3311 4368
3312#if EV_EMBED_ENABLE 4369#if EV_EMBED_ENABLE
3313void noinline 4370void noinline
3314ev_embed_sweep (EV_P_ ev_embed *w) 4371ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3315{ 4372{
3316 ev_loop (w->other, EVLOOP_NONBLOCK); 4373 ev_run (w->other, EVRUN_NOWAIT);
3317} 4374}
3318 4375
3319static void 4376static void
3320embed_io_cb (EV_P_ ev_io *io, int revents) 4377embed_io_cb (EV_P_ ev_io *io, int revents)
3321{ 4378{
3322 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4379 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3323 4380
3324 if (ev_cb (w)) 4381 if (ev_cb (w))
3325 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4382 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3326 else 4383 else
3327 ev_loop (w->other, EVLOOP_NONBLOCK); 4384 ev_run (w->other, EVRUN_NOWAIT);
3328} 4385}
3329 4386
3330static void 4387static void
3331embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4388embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3332{ 4389{
… …
3336 EV_P = w->other; 4393 EV_P = w->other;
3337 4394
3338 while (fdchangecnt) 4395 while (fdchangecnt)
3339 { 4396 {
3340 fd_reify (EV_A); 4397 fd_reify (EV_A);
3341 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4398 ev_run (EV_A_ EVRUN_NOWAIT);
3342 } 4399 }
3343 } 4400 }
3344} 4401}
3345 4402
3346static void 4403static void
… …
3352 4409
3353 { 4410 {
3354 EV_P = w->other; 4411 EV_P = w->other;
3355 4412
3356 ev_loop_fork (EV_A); 4413 ev_loop_fork (EV_A);
3357 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4414 ev_run (EV_A_ EVRUN_NOWAIT);
3358 } 4415 }
3359 4416
3360 ev_embed_start (EV_A_ w); 4417 ev_embed_start (EV_A_ w);
3361} 4418}
3362 4419
… …
3367 ev_idle_stop (EV_A_ idle); 4424 ev_idle_stop (EV_A_ idle);
3368} 4425}
3369#endif 4426#endif
3370 4427
3371void 4428void
3372ev_embed_start (EV_P_ ev_embed *w) 4429ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3373{ 4430{
3374 if (expect_false (ev_is_active (w))) 4431 if (expect_false (ev_is_active (w)))
3375 return; 4432 return;
3376 4433
3377 { 4434 {
… …
3398 4455
3399 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3400} 4457}
3401 4458
3402void 4459void
3403ev_embed_stop (EV_P_ ev_embed *w) 4460ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3404{ 4461{
3405 clear_pending (EV_A_ (W)w); 4462 clear_pending (EV_A_ (W)w);
3406 if (expect_false (!ev_is_active (w))) 4463 if (expect_false (!ev_is_active (w)))
3407 return; 4464 return;
3408 4465
… …
3410 4467
3411 ev_io_stop (EV_A_ &w->io); 4468 ev_io_stop (EV_A_ &w->io);
3412 ev_prepare_stop (EV_A_ &w->prepare); 4469 ev_prepare_stop (EV_A_ &w->prepare);
3413 ev_fork_stop (EV_A_ &w->fork); 4470 ev_fork_stop (EV_A_ &w->fork);
3414 4471
4472 ev_stop (EV_A_ (W)w);
4473
3415 EV_FREQUENT_CHECK; 4474 EV_FREQUENT_CHECK;
3416} 4475}
3417#endif 4476#endif
3418 4477
3419#if EV_FORK_ENABLE 4478#if EV_FORK_ENABLE
3420void 4479void
3421ev_fork_start (EV_P_ ev_fork *w) 4480ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3422{ 4481{
3423 if (expect_false (ev_is_active (w))) 4482 if (expect_false (ev_is_active (w)))
3424 return; 4483 return;
3425 4484
3426 EV_FREQUENT_CHECK; 4485 EV_FREQUENT_CHECK;
… …
3431 4490
3432 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3433} 4492}
3434 4493
3435void 4494void
3436ev_fork_stop (EV_P_ ev_fork *w) 4495ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3437{ 4496{
3438 clear_pending (EV_A_ (W)w); 4497 clear_pending (EV_A_ (W)w);
3439 if (expect_false (!ev_is_active (w))) 4498 if (expect_false (!ev_is_active (w)))
3440 return; 4499 return;
3441 4500
… …
3452 4511
3453 EV_FREQUENT_CHECK; 4512 EV_FREQUENT_CHECK;
3454} 4513}
3455#endif 4514#endif
3456 4515
4516#if EV_CLEANUP_ENABLE
4517void
4518ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4519{
4520 if (expect_false (ev_is_active (w)))
4521 return;
4522
4523 EV_FREQUENT_CHECK;
4524
4525 ev_start (EV_A_ (W)w, ++cleanupcnt);
4526 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4527 cleanups [cleanupcnt - 1] = w;
4528
4529 /* cleanup watchers should never keep a refcount on the loop */
4530 ev_unref (EV_A);
4531 EV_FREQUENT_CHECK;
4532}
4533
4534void
4535ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4536{
4537 clear_pending (EV_A_ (W)w);
4538 if (expect_false (!ev_is_active (w)))
4539 return;
4540
4541 EV_FREQUENT_CHECK;
4542 ev_ref (EV_A);
4543
4544 {
4545 int active = ev_active (w);
4546
4547 cleanups [active - 1] = cleanups [--cleanupcnt];
4548 ev_active (cleanups [active - 1]) = active;
4549 }
4550
4551 ev_stop (EV_A_ (W)w);
4552
4553 EV_FREQUENT_CHECK;
4554}
4555#endif
4556
3457#if EV_ASYNC_ENABLE 4557#if EV_ASYNC_ENABLE
3458void 4558void
3459ev_async_start (EV_P_ ev_async *w) 4559ev_async_start (EV_P_ ev_async *w) EV_THROW
3460{ 4560{
3461 if (expect_false (ev_is_active (w))) 4561 if (expect_false (ev_is_active (w)))
3462 return; 4562 return;
4563
4564 w->sent = 0;
3463 4565
3464 evpipe_init (EV_A); 4566 evpipe_init (EV_A);
3465 4567
3466 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3467 4569
… …
3471 4573
3472 EV_FREQUENT_CHECK; 4574 EV_FREQUENT_CHECK;
3473} 4575}
3474 4576
3475void 4577void
3476ev_async_stop (EV_P_ ev_async *w) 4578ev_async_stop (EV_P_ ev_async *w) EV_THROW
3477{ 4579{
3478 clear_pending (EV_A_ (W)w); 4580 clear_pending (EV_A_ (W)w);
3479 if (expect_false (!ev_is_active (w))) 4581 if (expect_false (!ev_is_active (w)))
3480 return; 4582 return;
3481 4583
… …
3492 4594
3493 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3494} 4596}
3495 4597
3496void 4598void
3497ev_async_send (EV_P_ ev_async *w) 4599ev_async_send (EV_P_ ev_async *w) EV_THROW
3498{ 4600{
3499 w->sent = 1; 4601 w->sent = 1;
3500 evpipe_write (EV_A_ &async_pending); 4602 evpipe_write (EV_A_ &async_pending);
3501} 4603}
3502#endif 4604#endif
… …
3539 4641
3540 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4642 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3541} 4643}
3542 4644
3543void 4645void
3544ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4646ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3545{ 4647{
3546 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4648 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3547 4649
3548 if (expect_false (!once)) 4650 if (expect_false (!once))
3549 { 4651 {
3550 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4652 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3551 return; 4653 return;
3552 } 4654 }
3553 4655
3554 once->cb = cb; 4656 once->cb = cb;
3555 once->arg = arg; 4657 once->arg = arg;
… …
3570} 4672}
3571 4673
3572/*****************************************************************************/ 4674/*****************************************************************************/
3573 4675
3574#if EV_WALK_ENABLE 4676#if EV_WALK_ENABLE
3575void 4677void ecb_cold
3576ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4678ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3577{ 4679{
3578 int i, j; 4680 int i, j;
3579 ev_watcher_list *wl, *wn; 4681 ev_watcher_list *wl, *wn;
3580 4682
3581 if (types & (EV_IO | EV_EMBED)) 4683 if (types & (EV_IO | EV_EMBED))
… …
3624 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4726 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3625#endif 4727#endif
3626 4728
3627#if EV_IDLE_ENABLE 4729#if EV_IDLE_ENABLE
3628 if (types & EV_IDLE) 4730 if (types & EV_IDLE)
3629 for (j = NUMPRI; i--; ) 4731 for (j = NUMPRI; j--; )
3630 for (i = idlecnt [j]; i--; ) 4732 for (i = idlecnt [j]; i--; )
3631 cb (EV_A_ EV_IDLE, idles [j][i]); 4733 cb (EV_A_ EV_IDLE, idles [j][i]);
3632#endif 4734#endif
3633 4735
3634#if EV_FORK_ENABLE 4736#if EV_FORK_ENABLE
… …
3642 if (types & EV_ASYNC) 4744 if (types & EV_ASYNC)
3643 for (i = asynccnt; i--; ) 4745 for (i = asynccnt; i--; )
3644 cb (EV_A_ EV_ASYNC, asyncs [i]); 4746 cb (EV_A_ EV_ASYNC, asyncs [i]);
3645#endif 4747#endif
3646 4748
4749#if EV_PREPARE_ENABLE
3647 if (types & EV_PREPARE) 4750 if (types & EV_PREPARE)
3648 for (i = preparecnt; i--; ) 4751 for (i = preparecnt; i--; )
3649#if EV_EMBED_ENABLE 4752# if EV_EMBED_ENABLE
3650 if (ev_cb (prepares [i]) != embed_prepare_cb) 4753 if (ev_cb (prepares [i]) != embed_prepare_cb)
3651#endif 4754# endif
3652 cb (EV_A_ EV_PREPARE, prepares [i]); 4755 cb (EV_A_ EV_PREPARE, prepares [i]);
4756#endif
3653 4757
4758#if EV_CHECK_ENABLE
3654 if (types & EV_CHECK) 4759 if (types & EV_CHECK)
3655 for (i = checkcnt; i--; ) 4760 for (i = checkcnt; i--; )
3656 cb (EV_A_ EV_CHECK, checks [i]); 4761 cb (EV_A_ EV_CHECK, checks [i]);
4762#endif
3657 4763
4764#if EV_SIGNAL_ENABLE
3658 if (types & EV_SIGNAL) 4765 if (types & EV_SIGNAL)
3659 for (i = 0; i < EV_NSIG - 1; ++i) 4766 for (i = 0; i < EV_NSIG - 1; ++i)
3660 for (wl = signals [i].head; wl; ) 4767 for (wl = signals [i].head; wl; )
3661 { 4768 {
3662 wn = wl->next; 4769 wn = wl->next;
3663 cb (EV_A_ EV_SIGNAL, wl); 4770 cb (EV_A_ EV_SIGNAL, wl);
3664 wl = wn; 4771 wl = wn;
3665 } 4772 }
4773#endif
3666 4774
4775#if EV_CHILD_ENABLE
3667 if (types & EV_CHILD) 4776 if (types & EV_CHILD)
3668 for (i = EV_PID_HASHSIZE; i--; ) 4777 for (i = (EV_PID_HASHSIZE); i--; )
3669 for (wl = childs [i]; wl; ) 4778 for (wl = childs [i]; wl; )
3670 { 4779 {
3671 wn = wl->next; 4780 wn = wl->next;
3672 cb (EV_A_ EV_CHILD, wl); 4781 cb (EV_A_ EV_CHILD, wl);
3673 wl = wn; 4782 wl = wn;
3674 } 4783 }
4784#endif
3675/* EV_STAT 0x00001000 /* stat data changed */ 4785/* EV_STAT 0x00001000 /* stat data changed */
3676/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4786/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3677} 4787}
3678#endif 4788#endif
3679 4789
3680#if EV_MULTIPLICITY 4790#if EV_MULTIPLICITY
3681 #include "ev_wrap.h" 4791 #include "ev_wrap.h"
3682#endif 4792#endif
3683 4793
3684#ifdef __cplusplus
3685}
3686#endif
3687

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