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Comparing libev/ev.c (file contents):
Revision 1.317 by root, Sat Nov 14 00:15:21 2009 UTC vs.
Revision 1.425 by root, Sun May 6 13:09:35 2012 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>
… …
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
186# endif 209# endif
210# undef EV_AVOID_STDIO
187#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
188 220
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
190 222
191/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 224#if defined EV_NSIG
193/* use what's provided */ 225/* use what's provided */
194#elif defined (NSIG) 226#elif defined NSIG
195# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 228#elif defined _NSIG
197# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 230#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 232#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 236#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 238#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 242#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 244#else
213# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
215# define EV_NSIG 65 248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
216#endif 253#endif
217 254
218#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 258# else
222# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
223# endif 260# endif
224#endif 261#endif
225 262
226#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 266# else
230# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
231# endif 268# endif
232#endif 269#endif
233 270
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 273#endif
237 274
238#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 278# else
242# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
243# endif 280# endif
244#endif 281#endif
245 282
246#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 285#endif
249 286
250#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
251# ifdef _WIN32 288# ifdef _WIN32
252# define EV_USE_POLL 0 289# define EV_USE_POLL 0
253# else 290# else
254# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 292# endif
256#endif 293#endif
257 294
258#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 298# else
262# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
263# endif 300# endif
264#endif 301#endif
265 302
… …
271# define EV_USE_PORT 0 308# define EV_USE_PORT 0
272#endif 309#endif
273 310
274#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 314# else
278# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
279# endif 316# endif
280#endif 317#endif
281 318
282#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 320# 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 321#endif
289 322
290#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 324# 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 325#endif
297 326
298#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 330# else
302# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
303# endif 332# endif
304#endif 333#endif
305 334
306#ifndef EV_USE_SIGNALFD 335#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 337# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 338# else
310# define EV_USE_SIGNALFD 0 339# define EV_USE_SIGNALFD 0
311# endif 340# endif
312#endif 341#endif
313 342
… …
316# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
318#endif 347#endif
319 348
320#ifndef EV_VERIFY 349#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 351#endif
323 352
324#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 355#endif
327 356
328#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 359#endif
331 360
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* 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. */ 362/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 364# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
340# else 369# else
… …
343# endif 372# endif
344#endif 373#endif
345 374
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347 376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
348#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
351#endif 386#endif
352 387
… …
359# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
361#endif 396#endif
362 397
363#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 401# include <sys/select.h>
366# endif 402# endif
367#endif 403#endif
368 404
369#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 406# include <sys/statfs.h>
372# include <sys/inotify.h> 407# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
392# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
393# else 428# else
394# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
395# endif 430# endif
396# endif 431# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 433#endif
405 434
406#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 437# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
415# else 444# else
416# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
417# endif 446# endif
418# endif 447# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 449
424struct signalfd_siginfo 450struct signalfd_siginfo
425{ 451{
426 uint32_t ssi_signo; 452 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
428}; 454};
429# ifdef __cplusplus
430}
431# endif 455#endif
432#endif
433
434 456
435/**/ 457/**/
436 458
437#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 461#else
440# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
441#endif 463#endif
442 464
443/* 465/*
444 * This is used to avoid floating point rounding problems. 466 * 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. 467 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 468 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 471
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#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) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
456#if __GNUC__ >= 4 519 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
458# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
459#else 526#else
460# define expect(expr,value) (expr) 527 #include <inttypes.h>
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
465#endif 542 #endif
543#endif
466 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
469#define inline_size static inline 960#define inline_size ecb_inline
470 961
471#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
472# define inline_speed static noinline 965# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 966#endif
476 967
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 969
479#if EV_MINPRI == EV_MAXPRI 970#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
494 985
495#if EV_USE_REALTIME 986#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* 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 */ 988/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 990#endif
500 991
501#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 995
505#ifndef EV_FD_TO_WIN32_HANDLE 996#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 998#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 999#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1001#endif
511#ifndef EV_WIN32_CLOSE_FD 1002#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1004#endif
514 1005
… …
516# include "ev_win32.c" 1007# include "ev_win32.c"
517#endif 1008#endif
518 1009
519/*****************************************************************************/ 1010/*****************************************************************************/
520 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
521static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
522 1111
523void 1112void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
525{ 1114{
526 syserr_cb = cb; 1115 syserr_cb = cb;
527} 1116}
528 1117
529static void noinline 1118static void noinline ecb_cold
530ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
531{ 1120{
532 if (!msg) 1121 if (!msg)
533 msg = "(libev) system error"; 1122 msg = "(libev) system error";
534 1123
535 if (syserr_cb) 1124 if (syserr_cb)
536 syserr_cb (msg); 1125 syserr_cb (msg);
537 else 1126 else
538 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
539 perror (msg); 1134 perror (msg);
1135#endif
540 abort (); 1136 abort ();
541 } 1137 }
542} 1138}
543 1139
544static void * 1140static void *
545ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
546{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
547 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
550 */ 1149 */
551 1150
552 if (size) 1151 if (size)
553 return realloc (ptr, size); 1152 return realloc (ptr, size);
554 1153
555 free (ptr); 1154 free (ptr);
556 return 0; 1155 return 0;
1156#endif
557} 1157}
558 1158
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
560 1160
561void 1161void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
563{ 1163{
564 alloc = cb; 1164 alloc = cb;
565} 1165}
566 1166
567inline_speed void * 1167inline_speed void *
… …
569{ 1169{
570 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
571 1171
572 if (!ptr && size) 1172 if (!ptr && size)
573 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
575 abort (); 1179 abort ();
576 } 1180 }
577 1181
578 return ptr; 1182 return ptr;
579} 1183}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1200 unsigned char unused;
597#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1203#endif
600#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
602#endif 1209#endif
603} ANFD; 1210} ANFD;
604 1211
605/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
606typedef struct 1213typedef struct
… …
648 #undef VAR 1255 #undef VAR
649 }; 1256 };
650 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
651 1258
652 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1261
655#else 1262#else
656 1263
657 ev_tstamp ev_rt_now; 1264 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; 1265 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1266 #include "ev_vars.h"
660 #undef VAR 1267 #undef VAR
661 1268
662 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
663 1270
664#endif 1271#endif
665 1272
666#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1274# 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) 1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1277#else
671# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1281#endif
675 1282
676#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
677 1284
678/*****************************************************************************/ 1285/*****************************************************************************/
679 1286
680#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1288ev_tstamp
682ev_time (void) 1289ev_time (void) EV_THROW
683{ 1290{
684#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
686 { 1293 {
687 struct timespec ts; 1294 struct timespec ts;
… …
711 return ev_time (); 1318 return ev_time ();
712} 1319}
713 1320
714#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
715ev_tstamp 1322ev_tstamp
716ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
717{ 1324{
718 return ev_rt_now; 1325 return ev_rt_now;
719} 1326}
720#endif 1327#endif
721 1328
722void 1329void
723ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
724{ 1331{
725 if (delay > 0.) 1332 if (delay > 0.)
726 { 1333 {
727#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
728 struct timespec ts; 1335 struct timespec ts;
729 1336
730 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1339#elif defined _WIN32
735 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
736#else 1341#else
737 struct timeval tv; 1342 struct timeval tv;
738 1343
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 */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
746#endif 1349#endif
747 } 1350 }
748} 1351}
749 1352
750/*****************************************************************************/ 1353/*****************************************************************************/
751 1354
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1356
754/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1359inline_size int
757array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
758{ 1361{
759 int ncur = cur + 1; 1362 int ncur = cur + 1;
760 1363
761 do 1364 do
762 ncur <<= 1; 1365 ncur <<= 1;
763 while (cnt > ncur); 1366 while (cnt > ncur);
764 1367
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1370 {
768 ncur *= elem; 1371 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1375 }
773 1376
774 return ncur; 1377 return ncur;
775} 1378}
776 1379
777static noinline void * 1380static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1382{
780 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
782} 1385}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1389
787#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
789 { \ 1392 { \
790 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1397 }
795 1398
… …
813pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 1417{
815} 1418}
816 1419
817void noinline 1420void noinline
818ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
819{ 1422{
820 W w_ = (W)w; 1423 W w_ = (W)w;
821 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
822 1425
823 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
827 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
829 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
831 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
832} 1437}
833 1438
834inline_speed void 1439inline_speed void
835feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
836{ 1441{
… …
856} 1461}
857 1462
858/*****************************************************************************/ 1463/*****************************************************************************/
859 1464
860inline_speed void 1465inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1467{
863 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
864 ev_io *w; 1469 ev_io *w;
865 1470
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1483fd_event (EV_P_ int fd, int revents)
879{ 1484{
880 ANFD *anfd = anfds + fd; 1485 ANFD *anfd = anfds + fd;
881 1486
882 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
884} 1489}
885 1490
886void 1491void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
888{ 1493{
889 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
891} 1496}
892 1497
893/* make sure the external fd watch events are in-sync */ 1498/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1499/* with the kernel/libev internal state */
895inline_size void 1500inline_size void
896fd_reify (EV_P) 1501fd_reify (EV_P)
897{ 1502{
898 int i; 1503 int i;
899 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
900 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
901 { 1531 {
902 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
904 ev_io *w; 1534 ev_io *w;
905 1535
906 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
907 1538
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1540
911#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1542 {
914 unsigned long arg; 1543 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1544
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1546 anfd->events |= (unsigned char)w->events;
1547
1548 if (o_events != anfd->events)
1549 o_reify = EV__IOFDSET; /* actually |= */
917 } 1550 }
918#endif
919 1551
920 { 1552 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); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1554 }
931 1555
932 fdchangecnt = 0; 1556 fdchangecnt = 0;
933} 1557}
934 1558
… …
946 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
947 } 1571 }
948} 1572}
949 1573
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1575inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
953{ 1577{
954 ev_io *w; 1578 ev_io *w;
955 1579
956 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1584 }
961} 1585}
962 1586
963/* check whether the given fd is atcually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1588inline_size int ecb_cold
965fd_valid (int fd) 1589fd_valid (int fd)
966{ 1590{
967#ifdef _WIN32 1591#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1593#else
970 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
971#endif 1595#endif
972} 1596}
973 1597
974/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
975static void noinline 1599static void noinline ecb_cold
976fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
977{ 1601{
978 int fd; 1602 int fd;
979 1603
980 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
984} 1608}
985 1609
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1611static void noinline ecb_cold
988fd_enomem (EV_P) 1612fd_enomem (EV_P)
989{ 1613{
990 int fd; 1614 int fd;
991 1615
992 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1634 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1636 }
1013} 1637}
1014 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
1015/*****************************************************************************/ 1653/*****************************************************************************/
1016 1654
1017/* 1655/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * 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 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
1021 */ 1659 */
1022 1660
1023/* 1661/*
… …
1171 1809
1172static ANSIG signals [EV_NSIG - 1]; 1810static ANSIG signals [EV_NSIG - 1];
1173 1811
1174/*****************************************************************************/ 1812/*****************************************************************************/
1175 1813
1176/* used to prepare libev internal fd's */ 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */
1178inline_speed void
1179fd_intern (int fd)
1180{
1181#ifdef _WIN32
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 1815
1190static void noinline 1816static void noinline ecb_cold
1191evpipe_init (EV_P) 1817evpipe_init (EV_P)
1192{ 1818{
1193 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1194 { 1820 {
1195#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1823 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1824 evfd = eventfd (0, 0);
1199 1825
1200 if (evfd >= 0) 1826 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1828 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1831 }
1206 else 1832 else
1207#endif 1833# endif
1208 { 1834 {
1209 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1211 1837
1212 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1845 }
1220} 1846}
1221 1847
1222inline_size void 1848inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1850{
1225 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1226 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1227 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1228
1229 *flag = 1;
1230 1871
1231#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1873 if (evfd >= 0)
1233 { 1874 {
1234 uint64_t counter = 1; 1875 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1236 } 1877 }
1237 else 1878 else
1238#endif 1879#endif
1880 {
1881 /* win32 people keep sending patches that change this write() to send() */
1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1883 /* so when you think this write should be a send instead, please find out */
1884 /* where your send() is from - it's definitely not the microsoft send, and */
1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1239 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1240 1890
1241 errno = old_errno; 1891 errno = old_errno;
1242 } 1892 }
1243} 1893}
1244 1894
… …
1247static void 1897static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1899{
1250 int i; 1900 int i;
1251 1901
1902 if (revents & EV_READ)
1903 {
1252#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1905 if (evfd >= 0)
1254 { 1906 {
1255 uint64_t counter; 1907 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1257 } 1909 }
1258 else 1910 else
1259#endif 1911#endif
1260 { 1912 {
1261 char dummy; 1913 char dummy;
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1262 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1263 } 1917 }
1264 1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1922
1923#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1924 if (sig_pending)
1266 { 1925 {
1267 sig_pending = 0; 1926 sig_pending = 0;
1927
1928 ECB_MEMORY_FENCE_RELEASE;
1268 1929
1269 for (i = EV_NSIG - 1; i--; ) 1930 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1931 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1933 }
1934#endif
1273 1935
1274#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1275 if (async_pending) 1937 if (async_pending)
1276 { 1938 {
1277 async_pending = 0; 1939 async_pending = 0;
1940
1941 ECB_MEMORY_FENCE_RELEASE;
1278 1942
1279 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1281 { 1945 {
1282 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1286#endif 1950#endif
1287} 1951}
1288 1952
1289/*****************************************************************************/ 1953/*****************************************************************************/
1290 1954
1955void
1956ev_feed_signal (int signum) EV_THROW
1957{
1958#if EV_MULTIPLICITY
1959 EV_P = signals [signum - 1].loop;
1960
1961 if (!EV_A)
1962 return;
1963#endif
1964
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending);
1970}
1971
1291static void 1972static void
1292ev_sighandler (int signum) 1973ev_sighandler (int signum)
1293{ 1974{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 1975#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1976 signal (signum, ev_sighandler);
1300#endif 1977#endif
1301 1978
1302 signals [signum - 1].pending = 1; 1979 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 1980}
1305 1981
1306void noinline 1982void noinline
1307ev_feed_signal_event (EV_P_ int signum) 1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1308{ 1984{
1309 WL w; 1985 WL w;
1310 1986
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1312 return; 1988 return;
… …
1345 break; 2021 break;
1346 } 2022 }
1347} 2023}
1348#endif 2024#endif
1349 2025
2026#endif
2027
1350/*****************************************************************************/ 2028/*****************************************************************************/
1351 2029
2030#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2031static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2032
1356static ev_signal childev; 2033static ev_signal childev;
1357 2034
1358#ifndef WIFCONTINUED 2035#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2036# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2041child_reap (EV_P_ int chain, int pid, int status)
1365{ 2042{
1366 ev_child *w; 2043 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2044 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2045
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2046 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2047 {
1371 if ((w->pid == pid || !w->pid) 2048 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2049 && (!traced || (w->flags & 1)))
1373 { 2050 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2051 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 */ 2076 /* 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 */ 2077 /* 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); 2078 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2079
1403 child_reap (EV_A_ pid, pid, status); 2080 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2081 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2082 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2083}
1407 2084
1408#endif 2085#endif
1409 2086
1410/*****************************************************************************/ 2087/*****************************************************************************/
1411 2088
2089#if EV_USE_IOCP
2090# include "ev_iocp.c"
2091#endif
1412#if EV_USE_PORT 2092#if EV_USE_PORT
1413# include "ev_port.c" 2093# include "ev_port.c"
1414#endif 2094#endif
1415#if EV_USE_KQUEUE 2095#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2096# include "ev_kqueue.c"
… …
1423#endif 2103#endif
1424#if EV_USE_SELECT 2104#if EV_USE_SELECT
1425# include "ev_select.c" 2105# include "ev_select.c"
1426#endif 2106#endif
1427 2107
1428int 2108int ecb_cold
1429ev_version_major (void) 2109ev_version_major (void) EV_THROW
1430{ 2110{
1431 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1432} 2112}
1433 2113
1434int 2114int ecb_cold
1435ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1436{ 2116{
1437 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1438} 2118}
1439 2119
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2120/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2121int inline_size ecb_cold
1442enable_secure (void) 2122enable_secure (void)
1443{ 2123{
1444#ifdef _WIN32 2124#ifdef _WIN32
1445 return 0; 2125 return 0;
1446#else 2126#else
1447 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2128 || getgid () != getegid ();
1449#endif 2129#endif
1450} 2130}
1451 2131
1452unsigned int 2132unsigned int ecb_cold
1453ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1454{ 2134{
1455 unsigned int flags = 0; 2135 unsigned int flags = 0;
1456 2136
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2142
1463 return flags; 2143 return flags;
1464} 2144}
1465 2145
1466unsigned int 2146unsigned int ecb_cold
1467ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1468{ 2148{
1469 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1470 2150
1471#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2156#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2157 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2158 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2159 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2160#endif
2161#ifdef __FreeBSD__
2162 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2163#endif
1481 2164
1482 return flags; 2165 return flags;
1483} 2166}
1484 2167
2168unsigned int ecb_cold
2169ev_embeddable_backends (void) EV_THROW
2170{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2175 flags &= ~EVBACKEND_EPOLL;
2176
2177 return flags;
2178}
2179
1485unsigned int 2180unsigned int
1486ev_embeddable_backends (void) 2181ev_backend (EV_P) EV_THROW
1487{ 2182{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2183 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} 2184}
1496 2185
2186#if EV_FEATURE_API
1497unsigned int 2187unsigned int
1498ev_backend (EV_P) 2188ev_iteration (EV_P) EV_THROW
1499{ 2189{
1500 return backend; 2190 return loop_count;
1501} 2191}
1502 2192
1503#if EV_MINIMAL < 2
1504unsigned int 2193unsigned int
1505ev_loop_count (EV_P) 2194ev_depth (EV_P) EV_THROW
1506{
1507 return loop_count;
1508}
1509
1510unsigned int
1511ev_loop_depth (EV_P)
1512{ 2195{
1513 return loop_depth; 2196 return loop_depth;
1514} 2197}
1515 2198
1516void 2199void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1518{ 2201{
1519 io_blocktime = interval; 2202 io_blocktime = interval;
1520} 2203}
1521 2204
1522void 2205void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1524{ 2207{
1525 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1526} 2209}
1527 2210
1528void 2211void
1529ev_set_userdata (EV_P_ void *data) 2212ev_set_userdata (EV_P_ void *data) EV_THROW
1530{ 2213{
1531 userdata = data; 2214 userdata = data;
1532} 2215}
1533 2216
1534void * 2217void *
1535ev_userdata (EV_P) 2218ev_userdata (EV_P) EV_THROW
1536{ 2219{
1537 return userdata; 2220 return userdata;
1538} 2221}
1539 2222
2223void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1541{ 2225{
1542 invoke_cb = invoke_pending_cb; 2226 invoke_cb = invoke_pending_cb;
1543} 2227}
1544 2228
2229void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1546{ 2231{
1547 release_cb = release; 2232 release_cb = release;
1548 acquire_cb = acquire; 2233 acquire_cb = acquire;
1549} 2234}
1550#endif 2235#endif
1551 2236
1552/* initialise a loop structure, must be zero-initialised */ 2237/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2238static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1555{ 2240{
1556 if (!backend) 2241 if (!backend)
1557 { 2242 {
2243 origflags = flags;
2244
1558#if EV_USE_REALTIME 2245#if EV_USE_REALTIME
1559 if (!have_realtime) 2246 if (!have_realtime)
1560 { 2247 {
1561 struct timespec ts; 2248 struct timespec ts;
1562 2249
… …
1584 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2272 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2275
1589 ev_rt_now = ev_time (); 2276 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2277 mn_now = get_clock ();
1591 now_floor = mn_now; 2278 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2279 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2280#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2281 invoke_cb = ev_invoke_pending;
1595#endif 2282#endif
1596 2283
1597 io_blocktime = 0.; 2284 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2285 timeout_blocktime = 0.;
1599 backend = 0; 2286 backend = 0;
1600 backend_fd = -1; 2287 backend_fd = -1;
1601 sig_pending = 0; 2288 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2289#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2290 async_pending = 0;
1604#endif 2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 2294#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2296#endif
1608#if EV_USE_SIGNALFD 2297#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2299#endif
1611 2300
1612 if (!(flags & 0x0000ffffU)) 2301 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1614 2303
2304#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif
1615#if EV_USE_PORT 2307#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2309#endif
1618#if EV_USE_KQUEUE 2310#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2321#endif
1630 2322
1631 ev_prepare_init (&pending_w, pendingcb); 2323 ev_prepare_init (&pending_w, pendingcb);
1632 2324
2325#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2326 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2327 ev_set_priority (&pipe_w, EV_MAXPRI);
2328#endif
1635 } 2329 }
1636} 2330}
1637 2331
1638/* free up a loop structure */ 2332/* free up a loop structure */
1639static void noinline 2333void ecb_cold
1640loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1641{ 2335{
1642 int i; 2336 int i;
2337
2338#if EV_MULTIPLICITY
2339 /* mimic free (0) */
2340 if (!EV_A)
2341 return;
2342#endif
2343
2344#if EV_CLEANUP_ENABLE
2345 /* queue cleanup watchers (and execute them) */
2346 if (expect_false (cleanupcnt))
2347 {
2348 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2349 EV_INVOKE_PENDING;
2350 }
2351#endif
2352
2353#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev))
2355 {
2356 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev);
2358 }
2359#endif
1643 2360
1644 if (ev_is_active (&pipe_w)) 2361 if (ev_is_active (&pipe_w))
1645 { 2362 {
1646 /*ev_ref (EV_A);*/ 2363 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2364 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1669#endif 2386#endif
1670 2387
1671 if (backend_fd >= 0) 2388 if (backend_fd >= 0)
1672 close (backend_fd); 2389 close (backend_fd);
1673 2390
2391#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif
1674#if EV_USE_PORT 2394#if EV_USE_PORT
1675 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1676#endif 2396#endif
1677#if EV_USE_KQUEUE 2397#if EV_USE_KQUEUE
1678 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1705 array_free (periodic, EMPTY); 2425 array_free (periodic, EMPTY);
1706#endif 2426#endif
1707#if EV_FORK_ENABLE 2427#if EV_FORK_ENABLE
1708 array_free (fork, EMPTY); 2428 array_free (fork, EMPTY);
1709#endif 2429#endif
2430#if EV_CLEANUP_ENABLE
2431 array_free (cleanup, EMPTY);
2432#endif
1710 array_free (prepare, EMPTY); 2433 array_free (prepare, EMPTY);
1711 array_free (check, EMPTY); 2434 array_free (check, EMPTY);
1712#if EV_ASYNC_ENABLE 2435#if EV_ASYNC_ENABLE
1713 array_free (async, EMPTY); 2436 array_free (async, EMPTY);
1714#endif 2437#endif
1715 2438
1716 backend = 0; 2439 backend = 0;
2440
2441#if EV_MULTIPLICITY
2442 if (ev_is_default_loop (EV_A))
2443#endif
2444 ev_default_loop_ptr = 0;
2445#if EV_MULTIPLICITY
2446 else
2447 ev_free (EV_A);
2448#endif
1717} 2449}
1718 2450
1719#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1720inline_size void infy_fork (EV_P); 2452inline_size void infy_fork (EV_P);
1721#endif 2453#endif
… …
1736 infy_fork (EV_A); 2468 infy_fork (EV_A);
1737#endif 2469#endif
1738 2470
1739 if (ev_is_active (&pipe_w)) 2471 if (ev_is_active (&pipe_w))
1740 { 2472 {
1741 /* this "locks" the handlers against writing to the pipe */ 2473 /* 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 2474
1748 ev_ref (EV_A); 2475 ev_ref (EV_A);
1749 ev_io_stop (EV_A_ &pipe_w); 2476 ev_io_stop (EV_A_ &pipe_w);
1750 2477
1751#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
… …
1757 { 2484 {
1758 EV_WIN32_CLOSE_FD (evpipe [0]); 2485 EV_WIN32_CLOSE_FD (evpipe [0]);
1759 EV_WIN32_CLOSE_FD (evpipe [1]); 2486 EV_WIN32_CLOSE_FD (evpipe [1]);
1760 } 2487 }
1761 2488
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1762 evpipe_init (EV_A); 2490 evpipe_init (EV_A);
1763 /* now iterate over everything, in case we missed something */ 2491 /* now iterate over everything, in case we missed something */
1764 pipecb (EV_A_ &pipe_w, EV_READ); 2492 pipecb (EV_A_ &pipe_w, EV_READ);
2493#endif
1765 } 2494 }
1766 2495
1767 postfork = 0; 2496 postfork = 0;
1768} 2497}
1769 2498
1770#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1771 2500
1772struct ev_loop * 2501struct ev_loop * ecb_cold
1773ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1774{ 2503{
1775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1776 2505
1777 memset (EV_A, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1778 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
1779 2508
1780 if (ev_backend (EV_A)) 2509 if (ev_backend (EV_A))
1781 return EV_A; 2510 return EV_A;
1782 2511
2512 ev_free (EV_A);
1783 return 0; 2513 return 0;
1784} 2514}
1785 2515
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 */ 2516#endif /* multiplicity */
1799 2517
1800#if EV_VERIFY 2518#if EV_VERIFY
1801static void noinline 2519static void noinline ecb_cold
1802verify_watcher (EV_P_ W w) 2520verify_watcher (EV_P_ W w)
1803{ 2521{
1804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1805 2523
1806 if (w->pending) 2524 if (w->pending)
1807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1808} 2526}
1809 2527
1810static void noinline 2528static void noinline ecb_cold
1811verify_heap (EV_P_ ANHE *heap, int N) 2529verify_heap (EV_P_ ANHE *heap, int N)
1812{ 2530{
1813 int i; 2531 int i;
1814 2532
1815 for (i = HEAP0; i < N + HEAP0; ++i) 2533 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1820 2538
1821 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1822 } 2540 }
1823} 2541}
1824 2542
1825static void noinline 2543static void noinline ecb_cold
1826array_verify (EV_P_ W *ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1827{ 2545{
1828 while (cnt--) 2546 while (cnt--)
1829 { 2547 {
1830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1831 verify_watcher (EV_A_ ws [cnt]); 2549 verify_watcher (EV_A_ ws [cnt]);
1832 } 2550 }
1833} 2551}
1834#endif 2552#endif
1835 2553
1836#if EV_MINIMAL < 2 2554#if EV_FEATURE_API
1837void 2555void ecb_cold
1838ev_loop_verify (EV_P) 2556ev_verify (EV_P) EV_THROW
1839{ 2557{
1840#if EV_VERIFY 2558#if EV_VERIFY
1841 int i; 2559 int i;
1842 WL w; 2560 WL w;
1843 2561
… …
1877#if EV_FORK_ENABLE 2595#if EV_FORK_ENABLE
1878 assert (forkmax >= forkcnt); 2596 assert (forkmax >= forkcnt);
1879 array_verify (EV_A_ (W *)forks, forkcnt); 2597 array_verify (EV_A_ (W *)forks, forkcnt);
1880#endif 2598#endif
1881 2599
2600#if EV_CLEANUP_ENABLE
2601 assert (cleanupmax >= cleanupcnt);
2602 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2603#endif
2604
1882#if EV_ASYNC_ENABLE 2605#if EV_ASYNC_ENABLE
1883 assert (asyncmax >= asynccnt); 2606 assert (asyncmax >= asynccnt);
1884 array_verify (EV_A_ (W *)asyncs, asynccnt); 2607 array_verify (EV_A_ (W *)asyncs, asynccnt);
1885#endif 2608#endif
1886 2609
2610#if EV_PREPARE_ENABLE
1887 assert (preparemax >= preparecnt); 2611 assert (preparemax >= preparecnt);
1888 array_verify (EV_A_ (W *)prepares, preparecnt); 2612 array_verify (EV_A_ (W *)prepares, preparecnt);
2613#endif
1889 2614
2615#if EV_CHECK_ENABLE
1890 assert (checkmax >= checkcnt); 2616 assert (checkmax >= checkcnt);
1891 array_verify (EV_A_ (W *)checks, checkcnt); 2617 array_verify (EV_A_ (W *)checks, checkcnt);
2618#endif
1892 2619
1893# if 0 2620# if 0
2621#if EV_CHILD_ENABLE
1894 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2622 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) 2623 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2624#endif
1896# endif 2625# endif
1897#endif 2626#endif
1898} 2627}
1899#endif 2628#endif
1900 2629
1901#if EV_MULTIPLICITY 2630#if EV_MULTIPLICITY
1902struct ev_loop * 2631struct ev_loop * ecb_cold
1903ev_default_loop_init (unsigned int flags)
1904#else 2632#else
1905int 2633int
2634#endif
1906ev_default_loop (unsigned int flags) 2635ev_default_loop (unsigned int flags) EV_THROW
1907#endif
1908{ 2636{
1909 if (!ev_default_loop_ptr) 2637 if (!ev_default_loop_ptr)
1910 { 2638 {
1911#if EV_MULTIPLICITY 2639#if EV_MULTIPLICITY
1912 EV_P = ev_default_loop_ptr = &default_loop_struct; 2640 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1916 2644
1917 loop_init (EV_A_ flags); 2645 loop_init (EV_A_ flags);
1918 2646
1919 if (ev_backend (EV_A)) 2647 if (ev_backend (EV_A))
1920 { 2648 {
1921#ifndef _WIN32 2649#if EV_CHILD_ENABLE
1922 ev_signal_init (&childev, childcb, SIGCHLD); 2650 ev_signal_init (&childev, childcb, SIGCHLD);
1923 ev_set_priority (&childev, EV_MAXPRI); 2651 ev_set_priority (&childev, EV_MAXPRI);
1924 ev_signal_start (EV_A_ &childev); 2652 ev_signal_start (EV_A_ &childev);
1925 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2653 ev_unref (EV_A); /* child watcher should not keep loop alive */
1926#endif 2654#endif
… …
1931 2659
1932 return ev_default_loop_ptr; 2660 return ev_default_loop_ptr;
1933} 2661}
1934 2662
1935void 2663void
1936ev_default_destroy (void) 2664ev_loop_fork (EV_P) EV_THROW
1937{ 2665{
1938#if EV_MULTIPLICITY
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 */ 2666 postfork = 1; /* must be in line with ev_default_fork */
1960} 2667}
1961 2668
1962/*****************************************************************************/ 2669/*****************************************************************************/
1963 2670
1964void 2671void
… …
1966{ 2673{
1967 EV_CB_INVOKE ((W)w, revents); 2674 EV_CB_INVOKE ((W)w, revents);
1968} 2675}
1969 2676
1970unsigned int 2677unsigned int
1971ev_pending_count (EV_P) 2678ev_pending_count (EV_P) EV_THROW
1972{ 2679{
1973 int pri; 2680 int pri;
1974 unsigned int count = 0; 2681 unsigned int count = 0;
1975 2682
1976 for (pri = NUMPRI; pri--; ) 2683 for (pri = NUMPRI; pri--; )
… …
1980} 2687}
1981 2688
1982void noinline 2689void noinline
1983ev_invoke_pending (EV_P) 2690ev_invoke_pending (EV_P)
1984{ 2691{
1985 int pri; 2692 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1986
1987 for (pri = NUMPRI; pri--; )
1988 while (pendingcnt [pri]) 2693 while (pendingcnt [pendingpri])
1989 { 2694 {
1990 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2695 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1991
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 2696
1995 p->w->pending = 0; 2697 p->w->pending = 0;
1996 EV_CB_INVOKE (p->w, p->events); 2698 EV_CB_INVOKE (p->w, p->events);
1997 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1998 } 2700 }
… …
2055 EV_FREQUENT_CHECK; 2757 EV_FREQUENT_CHECK;
2056 feed_reverse (EV_A_ (W)w); 2758 feed_reverse (EV_A_ (W)w);
2057 } 2759 }
2058 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2760 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2059 2761
2060 feed_reverse_done (EV_A_ EV_TIMEOUT); 2762 feed_reverse_done (EV_A_ EV_TIMER);
2061 } 2763 }
2062} 2764}
2063 2765
2064#if EV_PERIODIC_ENABLE 2766#if EV_PERIODIC_ENABLE
2767
2768static void noinline
2769periodic_recalc (EV_P_ ev_periodic *w)
2770{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773
2774 /* the above almost always errs on the low side */
2775 while (at <= ev_rt_now)
2776 {
2777 ev_tstamp nat = at + w->interval;
2778
2779 /* when resolution fails us, we use ev_rt_now */
2780 if (expect_false (nat == at))
2781 {
2782 at = ev_rt_now;
2783 break;
2784 }
2785
2786 at = nat;
2787 }
2788
2789 ev_at (w) = at;
2790}
2791
2065/* make periodics pending */ 2792/* make periodics pending */
2066inline_size void 2793inline_size void
2067periodics_reify (EV_P) 2794periodics_reify (EV_P)
2068{ 2795{
2069 EV_FREQUENT_CHECK; 2796 EV_FREQUENT_CHECK;
… …
2088 ANHE_at_cache (periodics [HEAP0]); 2815 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 2816 downheap (periodics, periodiccnt, HEAP0);
2090 } 2817 }
2091 else if (w->interval) 2818 else if (w->interval)
2092 { 2819 {
2093 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 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]); 2821 ANHE_at_cache (periodics [HEAP0]);
2108 downheap (periodics, periodiccnt, HEAP0); 2822 downheap (periodics, periodiccnt, HEAP0);
2109 } 2823 }
2110 else 2824 else
2111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2825 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2118 feed_reverse_done (EV_A_ EV_PERIODIC); 2832 feed_reverse_done (EV_A_ EV_PERIODIC);
2119 } 2833 }
2120} 2834}
2121 2835
2122/* simply recalculate all periodics */ 2836/* simply recalculate all periodics */
2123/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2837/* TODO: maybe ensure that at least one event happens when jumping forward? */
2124static void noinline 2838static void noinline ecb_cold
2125periodics_reschedule (EV_P) 2839periodics_reschedule (EV_P)
2126{ 2840{
2127 int i; 2841 int i;
2128 2842
2129 /* adjust periodics after time jump */ 2843 /* adjust periodics after time jump */
… …
2132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2846 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2133 2847
2134 if (w->reschedule_cb) 2848 if (w->reschedule_cb)
2135 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2849 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2136 else if (w->interval) 2850 else if (w->interval)
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2851 periodic_recalc (EV_A_ w);
2138 2852
2139 ANHE_at_cache (periodics [i]); 2853 ANHE_at_cache (periodics [i]);
2140 } 2854 }
2141 2855
2142 reheap (periodics, periodiccnt); 2856 reheap (periodics, periodiccnt);
2143} 2857}
2144#endif 2858#endif
2145 2859
2146/* adjust all timers by a given offset */ 2860/* adjust all timers by a given offset */
2147static void noinline 2861static void noinline ecb_cold
2148timers_reschedule (EV_P_ ev_tstamp adjust) 2862timers_reschedule (EV_P_ ev_tstamp adjust)
2149{ 2863{
2150 int i; 2864 int i;
2151 2865
2152 for (i = 0; i < timercnt; ++i) 2866 for (i = 0; i < timercnt; ++i)
… …
2156 ANHE_at_cache (*he); 2870 ANHE_at_cache (*he);
2157 } 2871 }
2158} 2872}
2159 2873
2160/* fetch new monotonic and realtime times from the kernel */ 2874/* fetch new monotonic and realtime times from the kernel */
2161/* also detetc if there was a timejump, and act accordingly */ 2875/* also detect if there was a timejump, and act accordingly */
2162inline_speed void 2876inline_speed void
2163time_update (EV_P_ ev_tstamp max_block) 2877time_update (EV_P_ ev_tstamp max_block)
2164{ 2878{
2165#if EV_USE_MONOTONIC 2879#if EV_USE_MONOTONIC
2166 if (expect_true (have_monotonic)) 2880 if (expect_true (have_monotonic))
… …
2189 * doesn't hurt either as we only do this on time-jumps or 2903 * doesn't hurt either as we only do this on time-jumps or
2190 * in the unlikely event of having been preempted here. 2904 * in the unlikely event of having been preempted here.
2191 */ 2905 */
2192 for (i = 4; --i; ) 2906 for (i = 4; --i; )
2193 { 2907 {
2908 ev_tstamp diff;
2194 rtmn_diff = ev_rt_now - mn_now; 2909 rtmn_diff = ev_rt_now - mn_now;
2195 2910
2911 diff = odiff - rtmn_diff;
2912
2196 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2913 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2197 return; /* all is well */ 2914 return; /* all is well */
2198 2915
2199 ev_rt_now = ev_time (); 2916 ev_rt_now = ev_time ();
2200 mn_now = get_clock (); 2917 mn_now = get_clock ();
2201 now_floor = mn_now; 2918 now_floor = mn_now;
… …
2223 2940
2224 mn_now = ev_rt_now; 2941 mn_now = ev_rt_now;
2225 } 2942 }
2226} 2943}
2227 2944
2228void 2945int
2229ev_loop (EV_P_ int flags) 2946ev_run (EV_P_ int flags)
2230{ 2947{
2231#if EV_MINIMAL < 2 2948#if EV_FEATURE_API
2232 ++loop_depth; 2949 ++loop_depth;
2233#endif 2950#endif
2234 2951
2235 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2952 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2236 2953
2237 loop_done = EVUNLOOP_CANCEL; 2954 loop_done = EVBREAK_CANCEL;
2238 2955
2239 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2956 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2240 2957
2241 do 2958 do
2242 { 2959 {
2243#if EV_VERIFY >= 2 2960#if EV_VERIFY >= 2
2244 ev_loop_verify (EV_A); 2961 ev_verify (EV_A);
2245#endif 2962#endif
2246 2963
2247#ifndef _WIN32 2964#ifndef _WIN32
2248 if (expect_false (curpid)) /* penalise the forking check even more */ 2965 if (expect_false (curpid)) /* penalise the forking check even more */
2249 if (expect_false (getpid () != curpid)) 2966 if (expect_false (getpid () != curpid))
… …
2261 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2978 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2262 EV_INVOKE_PENDING; 2979 EV_INVOKE_PENDING;
2263 } 2980 }
2264#endif 2981#endif
2265 2982
2983#if EV_PREPARE_ENABLE
2266 /* queue prepare watchers (and execute them) */ 2984 /* queue prepare watchers (and execute them) */
2267 if (expect_false (preparecnt)) 2985 if (expect_false (preparecnt))
2268 { 2986 {
2269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2987 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2270 EV_INVOKE_PENDING; 2988 EV_INVOKE_PENDING;
2271 } 2989 }
2990#endif
2272 2991
2273 if (expect_false (loop_done)) 2992 if (expect_false (loop_done))
2274 break; 2993 break;
2275 2994
2276 /* we might have forked, so reify kernel state if necessary */ 2995 /* we might have forked, so reify kernel state if necessary */
… …
2283 /* calculate blocking time */ 3002 /* calculate blocking time */
2284 { 3003 {
2285 ev_tstamp waittime = 0.; 3004 ev_tstamp waittime = 0.;
2286 ev_tstamp sleeptime = 0.; 3005 ev_tstamp sleeptime = 0.;
2287 3006
3007 /* remember old timestamp for io_blocktime calculation */
3008 ev_tstamp prev_mn_now = mn_now;
3009
3010 /* update time to cancel out callback processing overhead */
3011 time_update (EV_A_ 1e100);
3012
3013 /* from now on, we want a pipe-wake-up */
3014 pipe_write_wanted = 1;
3015
3016 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3017
2288 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3018 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2289 { 3019 {
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; 3020 waittime = MAX_BLOCKTIME;
2297 3021
2298 if (timercnt) 3022 if (timercnt)
2299 { 3023 {
2300 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3024 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2301 if (waittime > to) waittime = to; 3025 if (waittime > to) waittime = to;
2302 } 3026 }
2303 3027
2304#if EV_PERIODIC_ENABLE 3028#if EV_PERIODIC_ENABLE
2305 if (periodiccnt) 3029 if (periodiccnt)
2306 { 3030 {
2307 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3031 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2308 if (waittime > to) waittime = to; 3032 if (waittime > to) waittime = to;
2309 } 3033 }
2310#endif 3034#endif
2311 3035
2312 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3036 /* don't let timeouts decrease the waittime below timeout_blocktime */
2313 if (expect_false (waittime < timeout_blocktime)) 3037 if (expect_false (waittime < timeout_blocktime))
2314 waittime = timeout_blocktime; 3038 waittime = timeout_blocktime;
3039
3040 /* at this point, we NEED to wait, so we have to ensure */
3041 /* to pass a minimum nonzero value to the backend */
3042 if (expect_false (waittime < backend_mintime))
3043 waittime = backend_mintime;
2315 3044
2316 /* extra check because io_blocktime is commonly 0 */ 3045 /* extra check because io_blocktime is commonly 0 */
2317 if (expect_false (io_blocktime)) 3046 if (expect_false (io_blocktime))
2318 { 3047 {
2319 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3048 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2320 3049
2321 if (sleeptime > waittime - backend_fudge) 3050 if (sleeptime > waittime - backend_mintime)
2322 sleeptime = waittime - backend_fudge; 3051 sleeptime = waittime - backend_mintime;
2323 3052
2324 if (expect_true (sleeptime > 0.)) 3053 if (expect_true (sleeptime > 0.))
2325 { 3054 {
2326 ev_sleep (sleeptime); 3055 ev_sleep (sleeptime);
2327 waittime -= sleeptime; 3056 waittime -= sleeptime;
2328 } 3057 }
2329 } 3058 }
2330 } 3059 }
2331 3060
2332#if EV_MINIMAL < 2 3061#if EV_FEATURE_API
2333 ++loop_count; 3062 ++loop_count;
2334#endif 3063#endif
2335 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3064 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2336 backend_poll (EV_A_ waittime); 3065 backend_poll (EV_A_ waittime);
2337 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069
3070 if (pipe_write_skipped)
3071 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 }
3075
2338 3076
2339 /* update ev_rt_now, do magic */ 3077 /* update ev_rt_now, do magic */
2340 time_update (EV_A_ waittime + sleeptime); 3078 time_update (EV_A_ waittime + sleeptime);
2341 } 3079 }
2342 3080
… …
2349#if EV_IDLE_ENABLE 3087#if EV_IDLE_ENABLE
2350 /* queue idle watchers unless other events are pending */ 3088 /* queue idle watchers unless other events are pending */
2351 idle_reify (EV_A); 3089 idle_reify (EV_A);
2352#endif 3090#endif
2353 3091
3092#if EV_CHECK_ENABLE
2354 /* queue check watchers, to be executed first */ 3093 /* queue check watchers, to be executed first */
2355 if (expect_false (checkcnt)) 3094 if (expect_false (checkcnt))
2356 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3095 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3096#endif
2357 3097
2358 EV_INVOKE_PENDING; 3098 EV_INVOKE_PENDING;
2359 } 3099 }
2360 while (expect_true ( 3100 while (expect_true (
2361 activecnt 3101 activecnt
2362 && !loop_done 3102 && !loop_done
2363 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3103 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2364 )); 3104 ));
2365 3105
2366 if (loop_done == EVUNLOOP_ONE) 3106 if (loop_done == EVBREAK_ONE)
2367 loop_done = EVUNLOOP_CANCEL; 3107 loop_done = EVBREAK_CANCEL;
2368 3108
2369#if EV_MINIMAL < 2 3109#if EV_FEATURE_API
2370 --loop_depth; 3110 --loop_depth;
2371#endif 3111#endif
3112
3113 return activecnt;
2372} 3114}
2373 3115
2374void 3116void
2375ev_unloop (EV_P_ int how) 3117ev_break (EV_P_ int how) EV_THROW
2376{ 3118{
2377 loop_done = how; 3119 loop_done = how;
2378} 3120}
2379 3121
2380void 3122void
2381ev_ref (EV_P) 3123ev_ref (EV_P) EV_THROW
2382{ 3124{
2383 ++activecnt; 3125 ++activecnt;
2384} 3126}
2385 3127
2386void 3128void
2387ev_unref (EV_P) 3129ev_unref (EV_P) EV_THROW
2388{ 3130{
2389 --activecnt; 3131 --activecnt;
2390} 3132}
2391 3133
2392void 3134void
2393ev_now_update (EV_P) 3135ev_now_update (EV_P) EV_THROW
2394{ 3136{
2395 time_update (EV_A_ 1e100); 3137 time_update (EV_A_ 1e100);
2396} 3138}
2397 3139
2398void 3140void
2399ev_suspend (EV_P) 3141ev_suspend (EV_P) EV_THROW
2400{ 3142{
2401 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2402} 3144}
2403 3145
2404void 3146void
2405ev_resume (EV_P) 3147ev_resume (EV_P) EV_THROW
2406{ 3148{
2407 ev_tstamp mn_prev = mn_now; 3149 ev_tstamp mn_prev = mn_now;
2408 3150
2409 ev_now_update (EV_A); 3151 ev_now_update (EV_A);
2410 timers_reschedule (EV_A_ mn_now - mn_prev); 3152 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2449 w->pending = 0; 3191 w->pending = 0;
2450 } 3192 }
2451} 3193}
2452 3194
2453int 3195int
2454ev_clear_pending (EV_P_ void *w) 3196ev_clear_pending (EV_P_ void *w) EV_THROW
2455{ 3197{
2456 W w_ = (W)w; 3198 W w_ = (W)w;
2457 int pending = w_->pending; 3199 int pending = w_->pending;
2458 3200
2459 if (expect_true (pending)) 3201 if (expect_true (pending))
… …
2492} 3234}
2493 3235
2494/*****************************************************************************/ 3236/*****************************************************************************/
2495 3237
2496void noinline 3238void noinline
2497ev_io_start (EV_P_ ev_io *w) 3239ev_io_start (EV_P_ ev_io *w) EV_THROW
2498{ 3240{
2499 int fd = w->fd; 3241 int fd = w->fd;
2500 3242
2501 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2502 return; 3244 return;
2503 3245
2504 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3246 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)))); 3247 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2506 3248
2507 EV_FREQUENT_CHECK; 3249 EV_FREQUENT_CHECK;
2508 3250
2509 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2510 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3252 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2515 3257
2516 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2517} 3259}
2518 3260
2519void noinline 3261void noinline
2520ev_io_stop (EV_P_ ev_io *w) 3262ev_io_stop (EV_P_ ev_io *w) EV_THROW
2521{ 3263{
2522 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2523 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2524 return; 3266 return;
2525 3267
… …
2528 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2529 3271
2530 wlist_del (&anfds[w->fd].head, (WL)w); 3272 wlist_del (&anfds[w->fd].head, (WL)w);
2531 ev_stop (EV_A_ (W)w); 3273 ev_stop (EV_A_ (W)w);
2532 3274
2533 fd_change (EV_A_ w->fd, 1); 3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2534 3276
2535 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2536} 3278}
2537 3279
2538void noinline 3280void noinline
2539ev_timer_start (EV_P_ ev_timer *w) 3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2540{ 3282{
2541 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2542 return; 3284 return;
2543 3285
2544 ev_at (w) += mn_now; 3286 ev_at (w) += mn_now;
… …
2558 3300
2559 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2560} 3302}
2561 3303
2562void noinline 3304void noinline
2563ev_timer_stop (EV_P_ ev_timer *w) 3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2564{ 3306{
2565 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2566 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2567 return; 3309 return;
2568 3310
… …
2580 timers [active] = timers [timercnt + HEAP0]; 3322 timers [active] = timers [timercnt + HEAP0];
2581 adjustheap (timers, timercnt, active); 3323 adjustheap (timers, timercnt, active);
2582 } 3324 }
2583 } 3325 }
2584 3326
2585 EV_FREQUENT_CHECK;
2586
2587 ev_at (w) -= mn_now; 3327 ev_at (w) -= mn_now;
2588 3328
2589 ev_stop (EV_A_ (W)w); 3329 ev_stop (EV_A_ (W)w);
3330
3331 EV_FREQUENT_CHECK;
2590} 3332}
2591 3333
2592void noinline 3334void noinline
2593ev_timer_again (EV_P_ ev_timer *w) 3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2594{ 3336{
2595 EV_FREQUENT_CHECK; 3337 EV_FREQUENT_CHECK;
3338
3339 clear_pending (EV_A_ (W)w);
2596 3340
2597 if (ev_is_active (w)) 3341 if (ev_is_active (w))
2598 { 3342 {
2599 if (w->repeat) 3343 if (w->repeat)
2600 { 3344 {
… …
2613 3357
2614 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2615} 3359}
2616 3360
2617ev_tstamp 3361ev_tstamp
2618ev_timer_remaining (EV_P_ ev_timer *w) 3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2619{ 3363{
2620 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2621} 3365}
2622 3366
2623#if EV_PERIODIC_ENABLE 3367#if EV_PERIODIC_ENABLE
2624void noinline 3368void noinline
2625ev_periodic_start (EV_P_ ev_periodic *w) 3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2626{ 3370{
2627 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2628 return; 3372 return;
2629 3373
2630 if (w->reschedule_cb) 3374 if (w->reschedule_cb)
2631 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3375 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2632 else if (w->interval) 3376 else if (w->interval)
2633 { 3377 {
2634 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3378 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 */ 3379 periodic_recalc (EV_A_ w);
2636 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2637 } 3380 }
2638 else 3381 else
2639 ev_at (w) = w->offset; 3382 ev_at (w) = w->offset;
2640 3383
2641 EV_FREQUENT_CHECK; 3384 EV_FREQUENT_CHECK;
… …
2651 3394
2652 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2653} 3396}
2654 3397
2655void noinline 3398void noinline
2656ev_periodic_stop (EV_P_ ev_periodic *w) 3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2657{ 3400{
2658 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2660 return; 3403 return;
2661 3404
… …
2673 periodics [active] = periodics [periodiccnt + HEAP0]; 3416 periodics [active] = periodics [periodiccnt + HEAP0];
2674 adjustheap (periodics, periodiccnt, active); 3417 adjustheap (periodics, periodiccnt, active);
2675 } 3418 }
2676 } 3419 }
2677 3420
2678 EV_FREQUENT_CHECK;
2679
2680 ev_stop (EV_A_ (W)w); 3421 ev_stop (EV_A_ (W)w);
3422
3423 EV_FREQUENT_CHECK;
2681} 3424}
2682 3425
2683void noinline 3426void noinline
2684ev_periodic_again (EV_P_ ev_periodic *w) 3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2685{ 3428{
2686 /* TODO: use adjustheap and recalculation */ 3429 /* TODO: use adjustheap and recalculation */
2687 ev_periodic_stop (EV_A_ w); 3430 ev_periodic_stop (EV_A_ w);
2688 ev_periodic_start (EV_A_ w); 3431 ev_periodic_start (EV_A_ w);
2689} 3432}
… …
2691 3434
2692#ifndef SA_RESTART 3435#ifndef SA_RESTART
2693# define SA_RESTART 0 3436# define SA_RESTART 0
2694#endif 3437#endif
2695 3438
3439#if EV_SIGNAL_ENABLE
3440
2696void noinline 3441void noinline
2697ev_signal_start (EV_P_ ev_signal *w) 3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2698{ 3443{
2699 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2700 return; 3445 return;
2701 3446
2702 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2746 if (!((WL)w)->next) 3491 if (!((WL)w)->next)
2747# if EV_USE_SIGNALFD 3492# if EV_USE_SIGNALFD
2748 if (sigfd < 0) /*TODO*/ 3493 if (sigfd < 0) /*TODO*/
2749# endif 3494# endif
2750 { 3495 {
2751# if _WIN32 3496# ifdef _WIN32
2752 evpipe_init (EV_A); 3497 evpipe_init (EV_A);
2753 3498
2754 signal (w->signum, ev_sighandler); 3499 signal (w->signum, ev_sighandler);
2755# else 3500# else
2756 struct sigaction sa; 3501 struct sigaction sa;
… …
2760 sa.sa_handler = ev_sighandler; 3505 sa.sa_handler = ev_sighandler;
2761 sigfillset (&sa.sa_mask); 3506 sigfillset (&sa.sa_mask);
2762 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3507 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2763 sigaction (w->signum, &sa, 0); 3508 sigaction (w->signum, &sa, 0);
2764 3509
3510 if (origflags & EVFLAG_NOSIGMASK)
3511 {
2765 sigemptyset (&sa.sa_mask); 3512 sigemptyset (&sa.sa_mask);
2766 sigaddset (&sa.sa_mask, w->signum); 3513 sigaddset (&sa.sa_mask, w->signum);
2767 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3514 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3515 }
2768#endif 3516#endif
2769 } 3517 }
2770 3518
2771 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2772} 3520}
2773 3521
2774void noinline 3522void noinline
2775ev_signal_stop (EV_P_ ev_signal *w) 3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2776{ 3524{
2777 clear_pending (EV_A_ (W)w); 3525 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 3526 if (expect_false (!ev_is_active (w)))
2779 return; 3527 return;
2780 3528
… …
2789 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3537 signals [w->signum - 1].loop = 0; /* unattach from signal */
2790#endif 3538#endif
2791#if EV_USE_SIGNALFD 3539#if EV_USE_SIGNALFD
2792 if (sigfd >= 0) 3540 if (sigfd >= 0)
2793 { 3541 {
2794 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3542 sigset_t ss;
3543
3544 sigemptyset (&ss);
3545 sigaddset (&ss, w->signum);
2795 sigdelset (&sigfd_set, w->signum); 3546 sigdelset (&sigfd_set, w->signum);
3547
2796 signalfd (sigfd, &sigfd_set, 0); 3548 signalfd (sigfd, &sigfd_set, 0);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3549 sigprocmask (SIG_UNBLOCK, &ss, 0);
2798 /*TODO: maybe unblock signal? */
2799 } 3550 }
2800 else 3551 else
2801#endif 3552#endif
2802 signal (w->signum, SIG_DFL); 3553 signal (w->signum, SIG_DFL);
2803 } 3554 }
2804 3555
2805 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2806} 3557}
2807 3558
3559#endif
3560
3561#if EV_CHILD_ENABLE
3562
2808void 3563void
2809ev_child_start (EV_P_ ev_child *w) 3564ev_child_start (EV_P_ ev_child *w) EV_THROW
2810{ 3565{
2811#if EV_MULTIPLICITY 3566#if EV_MULTIPLICITY
2812 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2813#endif 3568#endif
2814 if (expect_false (ev_is_active (w))) 3569 if (expect_false (ev_is_active (w)))
2815 return; 3570 return;
2816 3571
2817 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2818 3573
2819 ev_start (EV_A_ (W)w, 1); 3574 ev_start (EV_A_ (W)w, 1);
2820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2821 3576
2822 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2823} 3578}
2824 3579
2825void 3580void
2826ev_child_stop (EV_P_ ev_child *w) 3581ev_child_stop (EV_P_ ev_child *w) EV_THROW
2827{ 3582{
2828 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2829 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2830 return; 3585 return;
2831 3586
2832 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2833 3588
2834 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3589 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2835 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
2836 3591
2837 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2838} 3593}
3594
3595#endif
2839 3596
2840#if EV_STAT_ENABLE 3597#if EV_STAT_ENABLE
2841 3598
2842# ifdef _WIN32 3599# ifdef _WIN32
2843# undef lstat 3600# undef lstat
… …
2849#define MIN_STAT_INTERVAL 0.1074891 3606#define MIN_STAT_INTERVAL 0.1074891
2850 3607
2851static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3608static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2852 3609
2853#if EV_USE_INOTIFY 3610#if EV_USE_INOTIFY
2854# define EV_INOTIFY_BUFSIZE 8192 3611
3612/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3613# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2855 3614
2856static void noinline 3615static void noinline
2857infy_add (EV_P_ ev_stat *w) 3616infy_add (EV_P_ ev_stat *w)
2858{ 3617{
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); 3618 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);
2860 3619
2861 if (w->wd < 0) 3620 if (w->wd >= 0)
3621 {
3622 struct statfs sfs;
3623
3624 /* now local changes will be tracked by inotify, but remote changes won't */
3625 /* unless the filesystem is known to be local, we therefore still poll */
3626 /* also do poll on <2.6.25, but with normal frequency */
3627
3628 if (!fs_2625)
3629 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3630 else if (!statfs (w->path, &sfs)
3631 && (sfs.f_type == 0x1373 /* devfs */
3632 || sfs.f_type == 0xEF53 /* ext2/3 */
3633 || sfs.f_type == 0x3153464a /* jfs */
3634 || sfs.f_type == 0x52654973 /* reiser3 */
3635 || sfs.f_type == 0x01021994 /* tempfs */
3636 || sfs.f_type == 0x58465342 /* xfs */))
3637 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3638 else
3639 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2862 { 3640 }
3641 else
3642 {
3643 /* can't use inotify, continue to stat */
2863 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3644 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2864 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2865 3645
2866 /* monitor some parent directory for speedup hints */ 3646 /* if path is not there, monitor some parent directory for speedup hints */
2867 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3647 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2868 /* but an efficiency issue only */ 3648 /* but an efficiency issue only */
2869 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3649 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2870 { 3650 {
2871 char path [4096]; 3651 char path [4096];
… …
2881 if (!pend || pend == path) 3661 if (!pend || pend == path)
2882 break; 3662 break;
2883 3663
2884 *pend = 0; 3664 *pend = 0;
2885 w->wd = inotify_add_watch (fs_fd, path, mask); 3665 w->wd = inotify_add_watch (fs_fd, path, mask);
2886 } 3666 }
2887 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3667 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2888 } 3668 }
2889 } 3669 }
2890 3670
2891 if (w->wd >= 0) 3671 if (w->wd >= 0)
2892 {
2893 struct statfs sfs;
2894
2895 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3672 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2896 3673
2897 /* now local changes will be tracked by inotify, but remote changes won't */ 3674 /* now re-arm timer, if required */
2898 /* unless the filesystem is known to be local, we therefore still poll */ 3675 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2899 /* also do poll on <2.6.25, but with normal frequency */
2900
2901 if (fs_2625 && !statfs (w->path, &sfs))
2902 if (sfs.f_type == 0x1373 /* devfs */
2903 || sfs.f_type == 0xEF53 /* ext2/3 */
2904 || sfs.f_type == 0x3153464a /* jfs */
2905 || sfs.f_type == 0x52654973 /* reiser3 */
2906 || sfs.f_type == 0x01021994 /* tempfs */
2907 || sfs.f_type == 0x58465342 /* xfs */)
2908 return;
2909
2910 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2911 ev_timer_again (EV_A_ &w->timer); 3676 ev_timer_again (EV_A_ &w->timer);
2912 } 3677 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2913} 3678}
2914 3679
2915static void noinline 3680static void noinline
2916infy_del (EV_P_ ev_stat *w) 3681infy_del (EV_P_ ev_stat *w)
2917{ 3682{
… …
2920 3685
2921 if (wd < 0) 3686 if (wd < 0)
2922 return; 3687 return;
2923 3688
2924 w->wd = -2; 3689 w->wd = -2;
2925 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3690 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2926 wlist_del (&fs_hash [slot].head, (WL)w); 3691 wlist_del (&fs_hash [slot].head, (WL)w);
2927 3692
2928 /* remove this watcher, if others are watching it, they will rearm */ 3693 /* remove this watcher, if others are watching it, they will rearm */
2929 inotify_rm_watch (fs_fd, wd); 3694 inotify_rm_watch (fs_fd, wd);
2930} 3695}
… …
2932static void noinline 3697static void noinline
2933infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3698infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2934{ 3699{
2935 if (slot < 0) 3700 if (slot < 0)
2936 /* overflow, need to check for all hash slots */ 3701 /* overflow, need to check for all hash slots */
2937 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3702 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2938 infy_wd (EV_A_ slot, wd, ev); 3703 infy_wd (EV_A_ slot, wd, ev);
2939 else 3704 else
2940 { 3705 {
2941 WL w_; 3706 WL w_;
2942 3707
2943 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3708 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2944 { 3709 {
2945 ev_stat *w = (ev_stat *)w_; 3710 ev_stat *w = (ev_stat *)w_;
2946 w_ = w_->next; /* lets us remove this watcher and all before it */ 3711 w_ = w_->next; /* lets us remove this watcher and all before it */
2947 3712
2948 if (w->wd == wd || wd == -1) 3713 if (w->wd == wd || wd == -1)
2949 { 3714 {
2950 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3715 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2951 { 3716 {
2952 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3717 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2953 w->wd = -1; 3718 w->wd = -1;
2954 infy_add (EV_A_ w); /* re-add, no matter what */ 3719 infy_add (EV_A_ w); /* re-add, no matter what */
2955 } 3720 }
2956 3721
2957 stat_timer_cb (EV_A_ &w->timer, 0); 3722 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2962 3727
2963static void 3728static void
2964infy_cb (EV_P_ ev_io *w, int revents) 3729infy_cb (EV_P_ ev_io *w, int revents)
2965{ 3730{
2966 char buf [EV_INOTIFY_BUFSIZE]; 3731 char buf [EV_INOTIFY_BUFSIZE];
2967 struct inotify_event *ev = (struct inotify_event *)buf;
2968 int ofs; 3732 int ofs;
2969 int len = read (fs_fd, buf, sizeof (buf)); 3733 int len = read (fs_fd, buf, sizeof (buf));
2970 3734
2971 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3735 for (ofs = 0; ofs < len; )
3736 {
3737 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2972 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3738 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3739 ofs += sizeof (struct inotify_event) + ev->len;
3740 }
2973} 3741}
2974 3742
2975inline_size void 3743inline_size void ecb_cold
2976check_2625 (EV_P) 3744ev_check_2625 (EV_P)
2977{ 3745{
2978 /* kernels < 2.6.25 are borked 3746 /* kernels < 2.6.25 are borked
2979 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2980 */ 3748 */
2981 struct utsname buf; 3749 if (ev_linux_version () < 0x020619)
2982 int major, minor, micro;
2983
2984 if (uname (&buf))
2985 return;
2986
2987 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2988 return;
2989
2990 if (major < 2
2991 || (major == 2 && minor < 6)
2992 || (major == 2 && minor == 6 && micro < 25))
2993 return; 3750 return;
2994 3751
2995 fs_2625 = 1; 3752 fs_2625 = 1;
2996} 3753}
2997 3754
2998inline_size int 3755inline_size int
2999infy_newfd (void) 3756infy_newfd (void)
3000{ 3757{
3001#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3758#if defined IN_CLOEXEC && defined IN_NONBLOCK
3002 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3759 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3003 if (fd >= 0) 3760 if (fd >= 0)
3004 return fd; 3761 return fd;
3005#endif 3762#endif
3006 return inotify_init (); 3763 return inotify_init ();
… …
3012 if (fs_fd != -2) 3769 if (fs_fd != -2)
3013 return; 3770 return;
3014 3771
3015 fs_fd = -1; 3772 fs_fd = -1;
3016 3773
3017 check_2625 (EV_A); 3774 ev_check_2625 (EV_A);
3018 3775
3019 fs_fd = infy_newfd (); 3776 fs_fd = infy_newfd ();
3020 3777
3021 if (fs_fd >= 0) 3778 if (fs_fd >= 0)
3022 { 3779 {
… …
3047 ev_io_set (&fs_w, fs_fd, EV_READ); 3804 ev_io_set (&fs_w, fs_fd, EV_READ);
3048 ev_io_start (EV_A_ &fs_w); 3805 ev_io_start (EV_A_ &fs_w);
3049 ev_unref (EV_A); 3806 ev_unref (EV_A);
3050 } 3807 }
3051 3808
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3809 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 3810 {
3054 WL w_ = fs_hash [slot].head; 3811 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 3812 fs_hash [slot].head = 0;
3056 3813
3057 while (w_) 3814 while (w_)
… …
3062 w->wd = -1; 3819 w->wd = -1;
3063 3820
3064 if (fs_fd >= 0) 3821 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3822 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 3823 else
3824 {
3825 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3826 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 3827 ev_timer_again (EV_A_ &w->timer);
3828 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3829 }
3068 } 3830 }
3069 } 3831 }
3070} 3832}
3071 3833
3072#endif 3834#endif
… …
3076#else 3838#else
3077# define EV_LSTAT(p,b) lstat (p, b) 3839# define EV_LSTAT(p,b) lstat (p, b)
3078#endif 3840#endif
3079 3841
3080void 3842void
3081ev_stat_stat (EV_P_ ev_stat *w) 3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3082{ 3844{
3083 if (lstat (w->path, &w->attr) < 0) 3845 if (lstat (w->path, &w->attr) < 0)
3084 w->attr.st_nlink = 0; 3846 w->attr.st_nlink = 0;
3085 else if (!w->attr.st_nlink) 3847 else if (!w->attr.st_nlink)
3086 w->attr.st_nlink = 1; 3848 w->attr.st_nlink = 1;
… …
3089static void noinline 3851static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3852stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3853{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3854 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3855
3094 /* we copy this here each the time so that */ 3856 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 3857 ev_stat_stat (EV_A_ w);
3098 3858
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3859 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 3860 if (
3101 w->prev.st_dev != w->attr.st_dev 3861 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3862 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3863 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3864 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3865 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3866 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3867 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3868 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3869 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3870 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3871 || prev.st_ctime != w->attr.st_ctime
3112 ) { 3872 ) {
3873 /* we only update w->prev on actual differences */
3874 /* in case we test more often than invoke the callback, */
3875 /* to ensure that prev is always different to attr */
3876 w->prev = prev;
3877
3113 #if EV_USE_INOTIFY 3878 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3879 if (fs_fd >= 0)
3115 { 3880 {
3116 infy_del (EV_A_ w); 3881 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3882 infy_add (EV_A_ w);
… …
3122 ev_feed_event (EV_A_ w, EV_STAT); 3887 ev_feed_event (EV_A_ w, EV_STAT);
3123 } 3888 }
3124} 3889}
3125 3890
3126void 3891void
3127ev_stat_start (EV_P_ ev_stat *w) 3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3128{ 3893{
3129 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
3130 return; 3895 return;
3131 3896
3132 ev_stat_stat (EV_A_ w); 3897 ev_stat_stat (EV_A_ w);
… …
3142 3907
3143 if (fs_fd >= 0) 3908 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3909 infy_add (EV_A_ w);
3145 else 3910 else
3146#endif 3911#endif
3912 {
3147 ev_timer_again (EV_A_ &w->timer); 3913 ev_timer_again (EV_A_ &w->timer);
3914 ev_unref (EV_A);
3915 }
3148 3916
3149 ev_start (EV_A_ (W)w, 1); 3917 ev_start (EV_A_ (W)w, 1);
3150 3918
3151 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
3152} 3920}
3153 3921
3154void 3922void
3155ev_stat_stop (EV_P_ ev_stat *w) 3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3156{ 3924{
3157 clear_pending (EV_A_ (W)w); 3925 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 3926 if (expect_false (!ev_is_active (w)))
3159 return; 3927 return;
3160 3928
3161 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
3162 3930
3163#if EV_USE_INOTIFY 3931#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3932 infy_del (EV_A_ w);
3165#endif 3933#endif
3934
3935 if (ev_is_active (&w->timer))
3936 {
3937 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3938 ev_timer_stop (EV_A_ &w->timer);
3939 }
3167 3940
3168 ev_stop (EV_A_ (W)w); 3941 ev_stop (EV_A_ (W)w);
3169 3942
3170 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
3171} 3944}
3172#endif 3945#endif
3173 3946
3174#if EV_IDLE_ENABLE 3947#if EV_IDLE_ENABLE
3175void 3948void
3176ev_idle_start (EV_P_ ev_idle *w) 3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3177{ 3950{
3178 if (expect_false (ev_is_active (w))) 3951 if (expect_false (ev_is_active (w)))
3179 return; 3952 return;
3180 3953
3181 pri_adjust (EV_A_ (W)w); 3954 pri_adjust (EV_A_ (W)w);
… …
3194 3967
3195 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3196} 3969}
3197 3970
3198void 3971void
3199ev_idle_stop (EV_P_ ev_idle *w) 3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3200{ 3973{
3201 clear_pending (EV_A_ (W)w); 3974 clear_pending (EV_A_ (W)w);
3202 if (expect_false (!ev_is_active (w))) 3975 if (expect_false (!ev_is_active (w)))
3203 return; 3976 return;
3204 3977
… …
3216 3989
3217 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3218} 3991}
3219#endif 3992#endif
3220 3993
3994#if EV_PREPARE_ENABLE
3221void 3995void
3222ev_prepare_start (EV_P_ ev_prepare *w) 3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3223{ 3997{
3224 if (expect_false (ev_is_active (w))) 3998 if (expect_false (ev_is_active (w)))
3225 return; 3999 return;
3226 4000
3227 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
… …
3232 4006
3233 EV_FREQUENT_CHECK; 4007 EV_FREQUENT_CHECK;
3234} 4008}
3235 4009
3236void 4010void
3237ev_prepare_stop (EV_P_ ev_prepare *w) 4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3238{ 4012{
3239 clear_pending (EV_A_ (W)w); 4013 clear_pending (EV_A_ (W)w);
3240 if (expect_false (!ev_is_active (w))) 4014 if (expect_false (!ev_is_active (w)))
3241 return; 4015 return;
3242 4016
… …
3251 4025
3252 ev_stop (EV_A_ (W)w); 4026 ev_stop (EV_A_ (W)w);
3253 4027
3254 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
3255} 4029}
4030#endif
3256 4031
4032#if EV_CHECK_ENABLE
3257void 4033void
3258ev_check_start (EV_P_ ev_check *w) 4034ev_check_start (EV_P_ ev_check *w) EV_THROW
3259{ 4035{
3260 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
3261 return; 4037 return;
3262 4038
3263 EV_FREQUENT_CHECK; 4039 EV_FREQUENT_CHECK;
… …
3268 4044
3269 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
3270} 4046}
3271 4047
3272void 4048void
3273ev_check_stop (EV_P_ ev_check *w) 4049ev_check_stop (EV_P_ ev_check *w) EV_THROW
3274{ 4050{
3275 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
3276 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
3277 return; 4053 return;
3278 4054
… …
3287 4063
3288 ev_stop (EV_A_ (W)w); 4064 ev_stop (EV_A_ (W)w);
3289 4065
3290 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3291} 4067}
4068#endif
3292 4069
3293#if EV_EMBED_ENABLE 4070#if EV_EMBED_ENABLE
3294void noinline 4071void noinline
3295ev_embed_sweep (EV_P_ ev_embed *w) 4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3296{ 4073{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4074 ev_run (w->other, EVRUN_NOWAIT);
3298} 4075}
3299 4076
3300static void 4077static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4078embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4079{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4080 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4081
3305 if (ev_cb (w)) 4082 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4083 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4084 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4085 ev_run (w->other, EVRUN_NOWAIT);
3309} 4086}
3310 4087
3311static void 4088static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4089embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4090{
… …
3317 EV_P = w->other; 4094 EV_P = w->other;
3318 4095
3319 while (fdchangecnt) 4096 while (fdchangecnt)
3320 { 4097 {
3321 fd_reify (EV_A); 4098 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4100 }
3324 } 4101 }
3325} 4102}
3326 4103
3327static void 4104static void
… …
3333 4110
3334 { 4111 {
3335 EV_P = w->other; 4112 EV_P = w->other;
3336 4113
3337 ev_loop_fork (EV_A); 4114 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4116 }
3340 4117
3341 ev_embed_start (EV_A_ w); 4118 ev_embed_start (EV_A_ w);
3342} 4119}
3343 4120
… …
3348 ev_idle_stop (EV_A_ idle); 4125 ev_idle_stop (EV_A_ idle);
3349} 4126}
3350#endif 4127#endif
3351 4128
3352void 4129void
3353ev_embed_start (EV_P_ ev_embed *w) 4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3354{ 4131{
3355 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
3356 return; 4133 return;
3357 4134
3358 { 4135 {
… …
3379 4156
3380 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3381} 4158}
3382 4159
3383void 4160void
3384ev_embed_stop (EV_P_ ev_embed *w) 4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3385{ 4162{
3386 clear_pending (EV_A_ (W)w); 4163 clear_pending (EV_A_ (W)w);
3387 if (expect_false (!ev_is_active (w))) 4164 if (expect_false (!ev_is_active (w)))
3388 return; 4165 return;
3389 4166
… …
3391 4168
3392 ev_io_stop (EV_A_ &w->io); 4169 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4170 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4171 ev_fork_stop (EV_A_ &w->fork);
3395 4172
4173 ev_stop (EV_A_ (W)w);
4174
3396 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
3397} 4176}
3398#endif 4177#endif
3399 4178
3400#if EV_FORK_ENABLE 4179#if EV_FORK_ENABLE
3401void 4180void
3402ev_fork_start (EV_P_ ev_fork *w) 4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3403{ 4182{
3404 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3405 return; 4184 return;
3406 4185
3407 EV_FREQUENT_CHECK; 4186 EV_FREQUENT_CHECK;
… …
3412 4191
3413 EV_FREQUENT_CHECK; 4192 EV_FREQUENT_CHECK;
3414} 4193}
3415 4194
3416void 4195void
3417ev_fork_stop (EV_P_ ev_fork *w) 4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3418{ 4197{
3419 clear_pending (EV_A_ (W)w); 4198 clear_pending (EV_A_ (W)w);
3420 if (expect_false (!ev_is_active (w))) 4199 if (expect_false (!ev_is_active (w)))
3421 return; 4200 return;
3422 4201
… …
3433 4212
3434 EV_FREQUENT_CHECK; 4213 EV_FREQUENT_CHECK;
3435} 4214}
3436#endif 4215#endif
3437 4216
4217#if EV_CLEANUP_ENABLE
4218void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4220{
4221 if (expect_false (ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225
4226 ev_start (EV_A_ (W)w, ++cleanupcnt);
4227 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4228 cleanups [cleanupcnt - 1] = w;
4229
4230 /* cleanup watchers should never keep a refcount on the loop */
4231 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK;
4233}
4234
4235void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4237{
4238 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243 ev_ref (EV_A);
4244
4245 {
4246 int active = ev_active (w);
4247
4248 cleanups [active - 1] = cleanups [--cleanupcnt];
4249 ev_active (cleanups [active - 1]) = active;
4250 }
4251
4252 ev_stop (EV_A_ (W)w);
4253
4254 EV_FREQUENT_CHECK;
4255}
4256#endif
4257
3438#if EV_ASYNC_ENABLE 4258#if EV_ASYNC_ENABLE
3439void 4259void
3440ev_async_start (EV_P_ ev_async *w) 4260ev_async_start (EV_P_ ev_async *w) EV_THROW
3441{ 4261{
3442 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3443 return; 4263 return;
4264
4265 w->sent = 0;
3444 4266
3445 evpipe_init (EV_A); 4267 evpipe_init (EV_A);
3446 4268
3447 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3448 4270
… …
3452 4274
3453 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3454} 4276}
3455 4277
3456void 4278void
3457ev_async_stop (EV_P_ ev_async *w) 4279ev_async_stop (EV_P_ ev_async *w) EV_THROW
3458{ 4280{
3459 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3460 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3461 return; 4283 return;
3462 4284
… …
3473 4295
3474 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3475} 4297}
3476 4298
3477void 4299void
3478ev_async_send (EV_P_ ev_async *w) 4300ev_async_send (EV_P_ ev_async *w) EV_THROW
3479{ 4301{
3480 w->sent = 1; 4302 w->sent = 1;
3481 evpipe_write (EV_A_ &async_pending); 4303 evpipe_write (EV_A_ &async_pending);
3482} 4304}
3483#endif 4305#endif
… …
3520 4342
3521 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3522} 4344}
3523 4345
3524void 4346void
3525ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3526{ 4348{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 4350
3529 if (expect_false (!once)) 4351 if (expect_false (!once))
3530 { 4352 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4353 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 4354 return;
3533 } 4355 }
3534 4356
3535 once->cb = cb; 4357 once->cb = cb;
3536 once->arg = arg; 4358 once->arg = arg;
… …
3551} 4373}
3552 4374
3553/*****************************************************************************/ 4375/*****************************************************************************/
3554 4376
3555#if EV_WALK_ENABLE 4377#if EV_WALK_ENABLE
3556void 4378void ecb_cold
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3558{ 4380{
3559 int i, j; 4381 int i, j;
3560 ev_watcher_list *wl, *wn; 4382 ev_watcher_list *wl, *wn;
3561 4383
3562 if (types & (EV_IO | EV_EMBED)) 4384 if (types & (EV_IO | EV_EMBED))
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4427 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 4428#endif
3607 4429
3608#if EV_IDLE_ENABLE 4430#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 4431 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 4432 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 4433 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 4434 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 4435#endif
3614 4436
3615#if EV_FORK_ENABLE 4437#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 4445 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 4446 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 4447 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 4448#endif
3627 4449
4450#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 4451 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 4452 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 4453# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 4454 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 4455# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 4456 cb (EV_A_ EV_PREPARE, prepares [i]);
4457#endif
3634 4458
4459#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 4460 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 4461 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 4462 cb (EV_A_ EV_CHECK, checks [i]);
4463#endif
3638 4464
4465#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 4466 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 4467 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 4468 for (wl = signals [i].head; wl; )
3642 { 4469 {
3643 wn = wl->next; 4470 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 4471 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 4472 wl = wn;
3646 } 4473 }
4474#endif
3647 4475
4476#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 4477 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 4478 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 4479 for (wl = childs [i]; wl; )
3651 { 4480 {
3652 wn = wl->next; 4481 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 4482 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 4483 wl = wn;
3655 } 4484 }
4485#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 4486/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4487/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 4488}
3659#endif 4489#endif
3660 4490
3661#if EV_MULTIPLICITY 4491#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 4492 #include "ev_wrap.h"
3663#endif 4493#endif
3664 4494
3665#ifdef __cplusplus
3666}
3667#endif
3668

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