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Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.397 by root, Wed Aug 24 16:13:41 2011 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 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
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# include "ev.h" 185# include "ev.h"
164#endif 186#endif
187
188EV_CPP(extern "C" {)
165 189
166#ifndef _WIN32 190#ifndef _WIN32
167# include <sys/time.h> 191# include <sys/time.h>
168# include <sys/wait.h> 192# include <sys/wait.h>
169# include <unistd.h> 193# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 197# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
176# endif 200# endif
201# undef EV_AVOID_STDIO
177#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
178 211
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
180 245
181#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 249# else
185# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
186# endif 251# endif
187#endif 252#endif
188 253
189#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 257# else
193# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
194# endif 259# endif
195#endif 260#endif
196 261
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 264#endif
200 265
201#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 269# else
205# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
206# endif 271# endif
207#endif 272#endif
208 273
209#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 276#endif
212 277
213#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
214# ifdef _WIN32 279# ifdef _WIN32
215# define EV_USE_POLL 0 280# define EV_USE_POLL 0
216# else 281# else
217# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 283# endif
219#endif 284#endif
220 285
221#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 289# else
225# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
226# endif 291# endif
227#endif 292#endif
228 293
… …
234# define EV_USE_PORT 0 299# define EV_USE_PORT 0
235#endif 300#endif
236 301
237#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 305# else
241# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
242# endif 307# endif
243#endif 308#endif
244 309
245#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 312#endif
252 313
253#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 316#endif
260 317
261#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 321# else
265# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
266# endif 331# endif
267#endif 332#endif
268 333
269#if 0 /* debugging */ 334#if 0 /* debugging */
270# define EV_VERIFY 3 335# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
273#endif 338#endif
274 339
275#ifndef EV_VERIFY 340#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 342#endif
278 343
279#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 346#endif
282 347
283#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
285#endif 364#endif
286 365
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
288 373
289#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
292#endif 377#endif
… …
300# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
302#endif 387#endif
303 388
304#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 392# include <sys/select.h>
307# endif 393# endif
308#endif 394#endif
309 395
310#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 397# include <sys/statfs.h>
313# include <sys/inotify.h> 398# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
320 405
321#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 407# include <winsock.h>
323#endif 408#endif
324 409
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 412# include <stdint.h>
337# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
338extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
339# endif 415# endif
340int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 417# ifdef O_CLOEXEC
342} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
343# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
344#endif 446#endif
345 447
346/**/ 448/**/
347 449
348#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 452#else
351# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
352#endif 454#endif
353 455
354/* 456/*
355 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 459 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 462
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 510 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
371#else 517#else
372# define expect(expr,value) (expr) 518 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 533 #endif
534#endif
378 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5)
547 #if __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N>
851 static inline int ecb_array_length (const T (&arr)[N])
852 {
853 return N;
854 }
855#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif
858
859#endif
860
861/* ECB.H END */
862
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architecture doesn't need memory fences, e.g. because it is
865 * single-cpu/core, or if you use libev in a project that doesn't use libev
866 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
867 * libev, in which casess the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences.
870 */
871# error "memory fences not defined for your architecture, please report"
872#endif
873
874#ifndef ECB_MEMORY_FENCE
875# define ECB_MEMORY_FENCE do { } while (0)
876# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
877# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
878#endif
879
880#define expect_false(cond) ecb_expect_false (cond)
881#define expect_true(cond) ecb_expect_true (cond)
882#define noinline ecb_noinline
883
381#define inline_size static inline 884#define inline_size ecb_inline
382 885
383#if EV_MINIMAL 886#if EV_FEATURE_CODE
887# define inline_speed ecb_inline
888#else
384# define inline_speed static noinline 889# define inline_speed static noinline
890#endif
891
892#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
893
894#if EV_MINPRI == EV_MAXPRI
895# define ABSPRI(w) (((W)w), 0)
385#else 896#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 897# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
898#endif
391 899
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 900#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 901#define EMPTY2(a,b) /* used to suppress some warnings */
394 902
395typedef ev_watcher *W; 903typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 907#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 908#define ev_at(w) ((WT)(w))->at
401 909
402#if EV_USE_REALTIME 910#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 911/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 912/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 913static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 914#endif
407 915
408#if EV_USE_MONOTONIC 916#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 917static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 918#endif
411 919
920#ifndef EV_FD_TO_WIN32_HANDLE
921# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
922#endif
923#ifndef EV_WIN32_HANDLE_TO_FD
924# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
925#endif
926#ifndef EV_WIN32_CLOSE_FD
927# define EV_WIN32_CLOSE_FD(fd) close (fd)
928#endif
929
412#ifdef _WIN32 930#ifdef _WIN32
413# include "ev_win32.c" 931# include "ev_win32.c"
414#endif 932#endif
415 933
416/*****************************************************************************/ 934/*****************************************************************************/
417 935
936/* define a suitable floor function (only used by periodics atm) */
937
938#if EV_USE_FLOOR
939# include <math.h>
940# define ev_floor(v) floor (v)
941#else
942
943#include <float.h>
944
945/* a floor() replacement function, should be independent of ev_tstamp type */
946static ev_tstamp noinline
947ev_floor (ev_tstamp v)
948{
949 /* the choice of shift factor is not terribly important */
950#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
951 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
952#else
953 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
954#endif
955
956 /* argument too large for an unsigned long? */
957 if (expect_false (v >= shift))
958 {
959 ev_tstamp f;
960
961 if (v == v - 1.)
962 return v; /* very large number */
963
964 f = shift * ev_floor (v * (1. / shift));
965 return f + ev_floor (v - f);
966 }
967
968 /* special treatment for negative args? */
969 if (expect_false (v < 0.))
970 {
971 ev_tstamp f = -ev_floor (-v);
972
973 return f - (f == v ? 0 : 1);
974 }
975
976 /* fits into an unsigned long */
977 return (unsigned long)v;
978}
979
980#endif
981
982/*****************************************************************************/
983
984#ifdef __linux
985# include <sys/utsname.h>
986#endif
987
988static unsigned int noinline ecb_cold
989ev_linux_version (void)
990{
991#ifdef __linux
992 unsigned int v = 0;
993 struct utsname buf;
994 int i;
995 char *p = buf.release;
996
997 if (uname (&buf))
998 return 0;
999
1000 for (i = 3+1; --i; )
1001 {
1002 unsigned int c = 0;
1003
1004 for (;;)
1005 {
1006 if (*p >= '0' && *p <= '9')
1007 c = c * 10 + *p++ - '0';
1008 else
1009 {
1010 p += *p == '.';
1011 break;
1012 }
1013 }
1014
1015 v = (v << 8) | c;
1016 }
1017
1018 return v;
1019#else
1020 return 0;
1021#endif
1022}
1023
1024/*****************************************************************************/
1025
1026#if EV_AVOID_STDIO
1027static void noinline ecb_cold
1028ev_printerr (const char *msg)
1029{
1030 write (STDERR_FILENO, msg, strlen (msg));
1031}
1032#endif
1033
418static void (*syserr_cb)(const char *msg); 1034static void (*syserr_cb)(const char *msg);
419 1035
420void 1036void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1037ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1038{
423 syserr_cb = cb; 1039 syserr_cb = cb;
424} 1040}
425 1041
426static void noinline 1042static void noinline ecb_cold
427ev_syserr (const char *msg) 1043ev_syserr (const char *msg)
428{ 1044{
429 if (!msg) 1045 if (!msg)
430 msg = "(libev) system error"; 1046 msg = "(libev) system error";
431 1047
432 if (syserr_cb) 1048 if (syserr_cb)
433 syserr_cb (msg); 1049 syserr_cb (msg);
434 else 1050 else
435 { 1051 {
1052#if EV_AVOID_STDIO
1053 ev_printerr (msg);
1054 ev_printerr (": ");
1055 ev_printerr (strerror (errno));
1056 ev_printerr ("\n");
1057#else
436 perror (msg); 1058 perror (msg);
1059#endif
437 abort (); 1060 abort ();
438 } 1061 }
439} 1062}
440 1063
441static void * 1064static void *
442ev_realloc_emul (void *ptr, long size) 1065ev_realloc_emul (void *ptr, long size)
443{ 1066{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
444 /* some systems, notably openbsd and darwin, fail to properly 1070 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1071 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1072 * the single unix specification, so work around them here.
447 */ 1073 */
448 1074
449 if (size) 1075 if (size)
450 return realloc (ptr, size); 1076 return realloc (ptr, size);
451 1077
452 free (ptr); 1078 free (ptr);
453 return 0; 1079 return 0;
1080#endif
454} 1081}
455 1082
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1084
458void 1085void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1086ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1087{
461 alloc = cb; 1088 alloc = cb;
462} 1089}
463 1090
… …
466{ 1093{
467 ptr = alloc (ptr, size); 1094 ptr = alloc (ptr, size);
468 1095
469 if (!ptr && size) 1096 if (!ptr && size)
470 { 1097 {
1098#if EV_AVOID_STDIO
1099 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1100#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1101 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1102#endif
472 abort (); 1103 abort ();
473 } 1104 }
474 1105
475 return ptr; 1106 return ptr;
476} 1107}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1109#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1110#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1111
481/*****************************************************************************/ 1112/*****************************************************************************/
482 1113
1114/* set in reify when reification needed */
1115#define EV_ANFD_REIFY 1
1116
483/* file descriptor info structure */ 1117/* file descriptor info structure */
484typedef struct 1118typedef struct
485{ 1119{
486 WL head; 1120 WL head;
487 unsigned char events; /* the events watched for */ 1121 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 1122 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1123 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 1124 unsigned char unused;
491#if EV_USE_EPOLL 1125#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1126 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1127#endif
494#if EV_SELECT_IS_WINSOCKET 1128#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1129 SOCKET handle;
1130#endif
1131#if EV_USE_IOCP
1132 OVERLAPPED or, ow;
496#endif 1133#endif
497} ANFD; 1134} ANFD;
498 1135
499/* stores the pending event set for a given watcher */ 1136/* stores the pending event set for a given watcher */
500typedef struct 1137typedef struct
… …
555 1192
556 static int ev_default_loop_ptr; 1193 static int ev_default_loop_ptr;
557 1194
558#endif 1195#endif
559 1196
1197#if EV_FEATURE_API
1198# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1199# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1200# define EV_INVOKE_PENDING invoke_cb (EV_A)
1201#else
1202# define EV_RELEASE_CB (void)0
1203# define EV_ACQUIRE_CB (void)0
1204# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1205#endif
1206
1207#define EVBREAK_RECURSE 0x80
1208
560/*****************************************************************************/ 1209/*****************************************************************************/
561 1210
1211#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1212ev_tstamp
563ev_time (void) 1213ev_time (void)
564{ 1214{
565#if EV_USE_REALTIME 1215#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1216 if (expect_true (have_realtime))
… …
573 1223
574 struct timeval tv; 1224 struct timeval tv;
575 gettimeofday (&tv, 0); 1225 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1226 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1227}
1228#endif
578 1229
579inline_size ev_tstamp 1230inline_size ev_tstamp
580get_clock (void) 1231get_clock (void)
581{ 1232{
582#if EV_USE_MONOTONIC 1233#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 1256 if (delay > 0.)
606 { 1257 {
607#if EV_USE_NANOSLEEP 1258#if EV_USE_NANOSLEEP
608 struct timespec ts; 1259 struct timespec ts;
609 1260
610 ts.tv_sec = (time_t)delay; 1261 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1262 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1263#elif defined(_WIN32)
615 Sleep ((unsigned long)(delay * 1e3)); 1264 Sleep ((unsigned long)(delay * 1e3));
616#else 1265#else
617 struct timeval tv; 1266 struct timeval tv;
618 1267
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1268 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1269 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1270 /* by older ones */
1271 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1272 select (0, 0, 0, 0, &tv);
626#endif 1273#endif
627 } 1274 }
628} 1275}
629 1276
630/*****************************************************************************/ 1277/*****************************************************************************/
631 1278
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1279#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 1280
634/* find a suitable new size for the given array, */ 1281/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1282/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1283inline_size int
637array_nextsize (int elem, int cur, int cnt) 1284array_nextsize (int elem, int cur, int cnt)
638{ 1285{
639 int ncur = cur + 1; 1286 int ncur = cur + 1;
640 1287
… …
652 } 1299 }
653 1300
654 return ncur; 1301 return ncur;
655} 1302}
656 1303
657static noinline void * 1304static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 1305array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1306{
660 *cur = array_nextsize (elem, *cur, cnt); 1307 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1308 return ev_realloc (base, elem * *cur);
662} 1309}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1312 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1313
667#define array_needsize(type,base,cur,cnt,init) \ 1314#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1315 if (expect_false ((cnt) > (cur))) \
669 { \ 1316 { \
670 int ocur_ = (cur); \ 1317 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1318 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1319 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1320 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1321 }
675 1322
… …
736} 1383}
737 1384
738/*****************************************************************************/ 1385/*****************************************************************************/
739 1386
740inline_speed void 1387inline_speed void
741fd_event (EV_P_ int fd, int revents) 1388fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1389{
743 ANFD *anfd = anfds + fd; 1390 ANFD *anfd = anfds + fd;
744 ev_io *w; 1391 ev_io *w;
745 1392
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1393 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1397 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1398 ev_feed_event (EV_A_ (W)w, ev);
752 } 1399 }
753} 1400}
754 1401
1402/* do not submit kernel events for fds that have reify set */
1403/* because that means they changed while we were polling for new events */
1404inline_speed void
1405fd_event (EV_P_ int fd, int revents)
1406{
1407 ANFD *anfd = anfds + fd;
1408
1409 if (expect_true (!anfd->reify))
1410 fd_event_nocheck (EV_A_ fd, revents);
1411}
1412
755void 1413void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1414ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 1415{
758 if (fd >= 0 && fd < anfdmax) 1416 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1417 fd_event_nocheck (EV_A_ fd, revents);
760} 1418}
761 1419
762/* make sure the external fd watch events are in-sync */ 1420/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1421/* with the kernel/libev internal state */
764inline_size void 1422inline_size void
765fd_reify (EV_P) 1423fd_reify (EV_P)
766{ 1424{
767 int i; 1425 int i;
768 1426
1427#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1428 for (i = 0; i < fdchangecnt; ++i)
1429 {
1430 int fd = fdchanges [i];
1431 ANFD *anfd = anfds + fd;
1432
1433 if (anfd->reify & EV__IOFDSET && anfd->head)
1434 {
1435 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1436
1437 if (handle != anfd->handle)
1438 {
1439 unsigned long arg;
1440
1441 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1442
1443 /* handle changed, but fd didn't - we need to do it in two steps */
1444 backend_modify (EV_A_ fd, anfd->events, 0);
1445 anfd->events = 0;
1446 anfd->handle = handle;
1447 }
1448 }
1449 }
1450#endif
1451
769 for (i = 0; i < fdchangecnt; ++i) 1452 for (i = 0; i < fdchangecnt; ++i)
770 { 1453 {
771 int fd = fdchanges [i]; 1454 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1455 ANFD *anfd = anfds + fd;
773 ev_io *w; 1456 ev_io *w;
774 1457
775 unsigned char events = 0; 1458 unsigned char o_events = anfd->events;
1459 unsigned char o_reify = anfd->reify;
776 1460
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1461 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1462
780#if EV_SELECT_IS_WINSOCKET 1463 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1464 {
783 unsigned long arg; 1465 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1466
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1468 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1469
788 #endif 1470 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1471 o_reify = EV__IOFDSET; /* actually |= */
790 } 1472 }
791#endif
792 1473
793 { 1474 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1475 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1476 }
804 1477
805 fdchangecnt = 0; 1478 fdchangecnt = 0;
806} 1479}
807 1480
… …
819 fdchanges [fdchangecnt - 1] = fd; 1492 fdchanges [fdchangecnt - 1] = fd;
820 } 1493 }
821} 1494}
822 1495
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1496/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1497inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1498fd_kill (EV_P_ int fd)
826{ 1499{
827 ev_io *w; 1500 ev_io *w;
828 1501
829 while ((w = (ev_io *)anfds [fd].head)) 1502 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1504 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1505 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1506 }
834} 1507}
835 1508
836/* check whether the given fd is atcually valid, for error recovery */ 1509/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1510inline_size int ecb_cold
838fd_valid (int fd) 1511fd_valid (int fd)
839{ 1512{
840#ifdef _WIN32 1513#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1514 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1515#else
843 return fcntl (fd, F_GETFD) != -1; 1516 return fcntl (fd, F_GETFD) != -1;
844#endif 1517#endif
845} 1518}
846 1519
847/* called on EBADF to verify fds */ 1520/* called on EBADF to verify fds */
848static void noinline 1521static void noinline ecb_cold
849fd_ebadf (EV_P) 1522fd_ebadf (EV_P)
850{ 1523{
851 int fd; 1524 int fd;
852 1525
853 for (fd = 0; fd < anfdmax; ++fd) 1526 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1528 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1529 fd_kill (EV_A_ fd);
857} 1530}
858 1531
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1532/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1533static void noinline ecb_cold
861fd_enomem (EV_P) 1534fd_enomem (EV_P)
862{ 1535{
863 int fd; 1536 int fd;
864 1537
865 for (fd = anfdmax; fd--; ) 1538 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1539 if (anfds [fd].events)
867 { 1540 {
868 fd_kill (EV_A_ fd); 1541 fd_kill (EV_A_ fd);
869 return; 1542 break;
870 } 1543 }
871} 1544}
872 1545
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1546/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1547static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1552 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1553 if (anfds [fd].events)
881 { 1554 {
882 anfds [fd].events = 0; 1555 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1556 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1557 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1558 }
886} 1559}
887 1560
1561/* used to prepare libev internal fd's */
1562/* this is not fork-safe */
1563inline_speed void
1564fd_intern (int fd)
1565{
1566#ifdef _WIN32
1567 unsigned long arg = 1;
1568 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1569#else
1570 fcntl (fd, F_SETFD, FD_CLOEXEC);
1571 fcntl (fd, F_SETFL, O_NONBLOCK);
1572#endif
1573}
1574
888/*****************************************************************************/ 1575/*****************************************************************************/
889 1576
890/* 1577/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1578 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1579 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1580 * the branching factor of the d-tree.
894 */ 1581 */
895 1582
896/* 1583/*
… …
964 1651
965 for (;;) 1652 for (;;)
966 { 1653 {
967 int c = k << 1; 1654 int c = k << 1;
968 1655
969 if (c > N + HEAP0 - 1) 1656 if (c >= N + HEAP0)
970 break; 1657 break;
971 1658
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1659 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1660 ? 1 : 0;
974 1661
… …
1010 1697
1011/* move an element suitably so it is in a correct place */ 1698/* move an element suitably so it is in a correct place */
1012inline_size void 1699inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1700adjustheap (ANHE *heap, int N, int k)
1014{ 1701{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1702 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1703 upheap (heap, k);
1017 else 1704 else
1018 downheap (heap, N, k); 1705 downheap (heap, N, k);
1019} 1706}
1020 1707
… …
1033/*****************************************************************************/ 1720/*****************************************************************************/
1034 1721
1035/* associate signal watchers to a signal signal */ 1722/* associate signal watchers to a signal signal */
1036typedef struct 1723typedef struct
1037{ 1724{
1725 EV_ATOMIC_T pending;
1726#if EV_MULTIPLICITY
1727 EV_P;
1728#endif
1038 WL head; 1729 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1730} ANSIG;
1041 1731
1042static ANSIG *signals; 1732static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1733
1047/*****************************************************************************/ 1734/*****************************************************************************/
1048 1735
1049/* used to prepare libev internal fd's */ 1736#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */
1051inline_speed void
1052fd_intern (int fd)
1053{
1054#ifdef _WIN32
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 1737
1063static void noinline 1738static void noinline ecb_cold
1064evpipe_init (EV_P) 1739evpipe_init (EV_P)
1065{ 1740{
1066 if (!ev_is_active (&pipe_w)) 1741 if (!ev_is_active (&pipe_w))
1067 { 1742 {
1068#if EV_USE_EVENTFD 1743# if EV_USE_EVENTFD
1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1745 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1746 evfd = eventfd (0, 0);
1747
1748 if (evfd >= 0)
1070 { 1749 {
1071 evpipe [0] = -1; 1750 evpipe [0] = -1;
1072 fd_intern (evfd); 1751 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1752 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1753 }
1075 else 1754 else
1076#endif 1755# endif
1077 { 1756 {
1078 while (pipe (evpipe)) 1757 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1758 ev_syserr ("(libev) error creating signal/async pipe");
1080 1759
1081 fd_intern (evpipe [0]); 1760 fd_intern (evpipe [0]);
… …
1086 ev_io_start (EV_A_ &pipe_w); 1765 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */ 1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 } 1767 }
1089} 1768}
1090 1769
1091inline_size void 1770inline_speed void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1772{
1094 if (!*flag) 1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1095 { 1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1096 int old_errno = errno; /* save errno because write might clobber it */ 1790 old_errno = errno; /* save errno because write will clobber it */
1097
1098 *flag = 1;
1099 1791
1100#if EV_USE_EVENTFD 1792#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1793 if (evfd >= 0)
1102 { 1794 {
1103 uint64_t counter = 1; 1795 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1796 write (evfd, &counter, sizeof (uint64_t));
1105 } 1797 }
1106 else 1798 else
1107#endif 1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1108 write (evpipe [1], &old_errno, 1); 1806 write (evpipe [1], &(evpipe [1]), 1);
1807 }
1109 1808
1110 errno = old_errno; 1809 errno = old_errno;
1111 } 1810 }
1112} 1811}
1113 1812
1114/* called whenever the libev signal pipe */ 1813/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1814/* got some events (signal, async) */
1116static void 1815static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1816pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1817{
1818 int i;
1819
1820 if (revents & EV_READ)
1821 {
1119#if EV_USE_EVENTFD 1822#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1823 if (evfd >= 0)
1121 { 1824 {
1122 uint64_t counter; 1825 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1826 read (evfd, &counter, sizeof (uint64_t));
1124 } 1827 }
1125 else 1828 else
1126#endif 1829#endif
1127 { 1830 {
1128 char dummy; 1831 char dummy;
1832 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1833 read (evpipe [0], &dummy, 1);
1834 }
1835 }
1836
1837 pipe_write_skipped = 0;
1838
1839#if EV_SIGNAL_ENABLE
1840 if (sig_pending)
1130 } 1841 {
1842 sig_pending = 0;
1131 1843
1132 if (gotsig && ev_is_default_loop (EV_A)) 1844 for (i = EV_NSIG - 1; i--; )
1133 { 1845 if (expect_false (signals [i].pending))
1134 int signum;
1135 gotsig = 0;
1136
1137 for (signum = signalmax; signum--; )
1138 if (signals [signum].gotsig)
1139 ev_feed_signal_event (EV_A_ signum + 1); 1846 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1847 }
1848#endif
1141 1849
1142#if EV_ASYNC_ENABLE 1850#if EV_ASYNC_ENABLE
1143 if (gotasync) 1851 if (async_pending)
1144 { 1852 {
1145 int i; 1853 async_pending = 0;
1146 gotasync = 0;
1147 1854
1148 for (i = asynccnt; i--; ) 1855 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1856 if (asyncs [i]->sent)
1150 { 1857 {
1151 asyncs [i]->sent = 0; 1858 asyncs [i]->sent = 0;
… …
1155#endif 1862#endif
1156} 1863}
1157 1864
1158/*****************************************************************************/ 1865/*****************************************************************************/
1159 1866
1867void
1868ev_feed_signal (int signum)
1869{
1870#if EV_MULTIPLICITY
1871 EV_P = signals [signum - 1].loop;
1872
1873 if (!EV_A)
1874 return;
1875#endif
1876
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending);
1882}
1883
1160static void 1884static void
1161ev_sighandler (int signum) 1885ev_sighandler (int signum)
1162{ 1886{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1887#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1888 signal (signum, ev_sighandler);
1169#endif 1889#endif
1170 1890
1171 signals [signum - 1].gotsig = 1; 1891 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1892}
1174 1893
1175void noinline 1894void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1895ev_feed_signal_event (EV_P_ int signum)
1177{ 1896{
1178 WL w; 1897 WL w;
1179 1898
1899 if (expect_false (signum <= 0 || signum > EV_NSIG))
1900 return;
1901
1902 --signum;
1903
1180#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1905 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1906 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1907
1184 --signum; 1908 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1909 return;
1910#endif
1188 1911
1189 signals [signum].gotsig = 0; 1912 signals [signum].pending = 0;
1190 1913
1191 for (w = signals [signum].head; w; w = w->next) 1914 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1916}
1194 1917
1918#if EV_USE_SIGNALFD
1919static void
1920sigfdcb (EV_P_ ev_io *iow, int revents)
1921{
1922 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1923
1924 for (;;)
1925 {
1926 ssize_t res = read (sigfd, si, sizeof (si));
1927
1928 /* not ISO-C, as res might be -1, but works with SuS */
1929 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1930 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1931
1932 if (res < (ssize_t)sizeof (si))
1933 break;
1934 }
1935}
1936#endif
1937
1938#endif
1939
1195/*****************************************************************************/ 1940/*****************************************************************************/
1196 1941
1942#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 1943static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 1944
1201static ev_signal childev; 1945static ev_signal childev;
1202 1946
1203#ifndef WIFCONTINUED 1947#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 1948# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 1953child_reap (EV_P_ int chain, int pid, int status)
1210{ 1954{
1211 ev_child *w; 1955 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1956 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 1957
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1958 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 1959 {
1216 if ((w->pid == pid || !w->pid) 1960 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 1961 && (!traced || (w->flags & 1)))
1218 { 1962 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1963 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 1988 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 1989 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1990 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 1991
1248 child_reap (EV_A_ pid, pid, status); 1992 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 1993 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1994 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 1995}
1252 1996
1253#endif 1997#endif
1254 1998
1255/*****************************************************************************/ 1999/*****************************************************************************/
1256 2000
2001#if EV_USE_IOCP
2002# include "ev_iocp.c"
2003#endif
1257#if EV_USE_PORT 2004#if EV_USE_PORT
1258# include "ev_port.c" 2005# include "ev_port.c"
1259#endif 2006#endif
1260#if EV_USE_KQUEUE 2007#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2008# include "ev_kqueue.c"
… …
1268#endif 2015#endif
1269#if EV_USE_SELECT 2016#if EV_USE_SELECT
1270# include "ev_select.c" 2017# include "ev_select.c"
1271#endif 2018#endif
1272 2019
1273int 2020int ecb_cold
1274ev_version_major (void) 2021ev_version_major (void)
1275{ 2022{
1276 return EV_VERSION_MAJOR; 2023 return EV_VERSION_MAJOR;
1277} 2024}
1278 2025
1279int 2026int ecb_cold
1280ev_version_minor (void) 2027ev_version_minor (void)
1281{ 2028{
1282 return EV_VERSION_MINOR; 2029 return EV_VERSION_MINOR;
1283} 2030}
1284 2031
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2032/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2033int inline_size ecb_cold
1287enable_secure (void) 2034enable_secure (void)
1288{ 2035{
1289#ifdef _WIN32 2036#ifdef _WIN32
1290 return 0; 2037 return 0;
1291#else 2038#else
1292 return getuid () != geteuid () 2039 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2040 || getgid () != getegid ();
1294#endif 2041#endif
1295} 2042}
1296 2043
1297unsigned int 2044unsigned int ecb_cold
1298ev_supported_backends (void) 2045ev_supported_backends (void)
1299{ 2046{
1300 unsigned int flags = 0; 2047 unsigned int flags = 0;
1301 2048
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2053 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 2054
1308 return flags; 2055 return flags;
1309} 2056}
1310 2057
1311unsigned int 2058unsigned int ecb_cold
1312ev_recommended_backends (void) 2059ev_recommended_backends (void)
1313{ 2060{
1314 unsigned int flags = ev_supported_backends (); 2061 unsigned int flags = ev_supported_backends ();
1315 2062
1316#ifndef __NetBSD__ 2063#ifndef __NetBSD__
… …
1321#ifdef __APPLE__ 2068#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2069 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2070 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2071 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2072#endif
2073#ifdef __FreeBSD__
2074 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2075#endif
1326 2076
1327 return flags; 2077 return flags;
1328} 2078}
1329 2079
1330unsigned int 2080unsigned int ecb_cold
1331ev_embeddable_backends (void) 2081ev_embeddable_backends (void)
1332{ 2082{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 2084
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2085 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 2086 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 2087 flags &= ~EVBACKEND_EPOLL;
1338 2088
1339 return flags; 2089 return flags;
1340} 2090}
1341 2091
1342unsigned int 2092unsigned int
1343ev_backend (EV_P) 2093ev_backend (EV_P)
1344{ 2094{
1345 return backend; 2095 return backend;
1346} 2096}
1347 2097
2098#if EV_FEATURE_API
1348unsigned int 2099unsigned int
1349ev_loop_count (EV_P) 2100ev_iteration (EV_P)
1350{ 2101{
1351 return loop_count; 2102 return loop_count;
2103}
2104
2105unsigned int
2106ev_depth (EV_P)
2107{
2108 return loop_depth;
1352} 2109}
1353 2110
1354void 2111void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2112ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 2113{
… …
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2118ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 2119{
1363 timeout_blocktime = interval; 2120 timeout_blocktime = interval;
1364} 2121}
1365 2122
2123void
2124ev_set_userdata (EV_P_ void *data)
2125{
2126 userdata = data;
2127}
2128
2129void *
2130ev_userdata (EV_P)
2131{
2132 return userdata;
2133}
2134
2135void
2136ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2137{
2138 invoke_cb = invoke_pending_cb;
2139}
2140
2141void
2142ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2143{
2144 release_cb = release;
2145 acquire_cb = acquire;
2146}
2147#endif
2148
1366/* initialise a loop structure, must be zero-initialised */ 2149/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2150static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 2151loop_init (EV_P_ unsigned int flags)
1369{ 2152{
1370 if (!backend) 2153 if (!backend)
1371 { 2154 {
2155 origflags = flags;
2156
1372#if EV_USE_REALTIME 2157#if EV_USE_REALTIME
1373 if (!have_realtime) 2158 if (!have_realtime)
1374 { 2159 {
1375 struct timespec ts; 2160 struct timespec ts;
1376 2161
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2172 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2173 have_monotonic = 1;
1389 } 2174 }
1390#endif 2175#endif
1391 2176
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 2177 /* pid check not overridable via env */
1407#ifndef _WIN32 2178#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2179 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2180 curpid = getpid ();
1410#endif 2181#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2183 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2184 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2185 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2186 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2187
1417 if (!(flags & 0x0000ffffU)) 2188 ev_rt_now = ev_time ();
2189 mn_now = get_clock ();
2190 now_floor = mn_now;
2191 rtmn_diff = ev_rt_now - mn_now;
2192#if EV_FEATURE_API
2193 invoke_cb = ev_invoke_pending;
2194#endif
2195
2196 io_blocktime = 0.;
2197 timeout_blocktime = 0.;
2198 backend = 0;
2199 backend_fd = -1;
2200 sig_pending = 0;
2201#if EV_ASYNC_ENABLE
2202 async_pending = 0;
2203#endif
2204 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0;
2206#if EV_USE_INOTIFY
2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2208#endif
2209#if EV_USE_SIGNALFD
2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2211#endif
2212
2213 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2214 flags |= ev_recommended_backends ();
1419 2215
2216#if EV_USE_IOCP
2217 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2218#endif
1420#if EV_USE_PORT 2219#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2220 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2221#endif
1423#if EV_USE_KQUEUE 2222#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2223 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2232 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 2233#endif
1435 2234
1436 ev_prepare_init (&pending_w, pendingcb); 2235 ev_prepare_init (&pending_w, pendingcb);
1437 2236
2237#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2238 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2239 ev_set_priority (&pipe_w, EV_MAXPRI);
2240#endif
1440 } 2241 }
1441} 2242}
1442 2243
1443/* free up a loop structure */ 2244/* free up a loop structure */
1444static void noinline 2245void ecb_cold
1445loop_destroy (EV_P) 2246ev_loop_destroy (EV_P)
1446{ 2247{
1447 int i; 2248 int i;
1448 2249
2250#if EV_MULTIPLICITY
2251 /* mimic free (0) */
2252 if (!EV_A)
2253 return;
2254#endif
2255
2256#if EV_CLEANUP_ENABLE
2257 /* queue cleanup watchers (and execute them) */
2258 if (expect_false (cleanupcnt))
2259 {
2260 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2261 EV_INVOKE_PENDING;
2262 }
2263#endif
2264
2265#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev))
2267 {
2268 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev);
2270 }
2271#endif
2272
1449 if (ev_is_active (&pipe_w)) 2273 if (ev_is_active (&pipe_w))
1450 { 2274 {
1451 ev_ref (EV_A); /* signal watcher */ 2275 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 2276 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 2277
1454#if EV_USE_EVENTFD 2278#if EV_USE_EVENTFD
1455 if (evfd >= 0) 2279 if (evfd >= 0)
1456 close (evfd); 2280 close (evfd);
1457#endif 2281#endif
1458 2282
1459 if (evpipe [0] >= 0) 2283 if (evpipe [0] >= 0)
1460 { 2284 {
1461 close (evpipe [0]); 2285 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 2286 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 2287 }
1464 } 2288 }
2289
2290#if EV_USE_SIGNALFD
2291 if (ev_is_active (&sigfd_w))
2292 close (sigfd);
2293#endif
1465 2294
1466#if EV_USE_INOTIFY 2295#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 2296 if (fs_fd >= 0)
1468 close (fs_fd); 2297 close (fs_fd);
1469#endif 2298#endif
1470 2299
1471 if (backend_fd >= 0) 2300 if (backend_fd >= 0)
1472 close (backend_fd); 2301 close (backend_fd);
1473 2302
2303#if EV_USE_IOCP
2304 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2305#endif
1474#if EV_USE_PORT 2306#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2307 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 2308#endif
1477#if EV_USE_KQUEUE 2309#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2310 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2325#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2326 array_free (idle, [i]);
1495#endif 2327#endif
1496 } 2328 }
1497 2329
1498 ev_free (anfds); anfdmax = 0; 2330 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2331
1500 /* have to use the microsoft-never-gets-it-right macro */ 2332 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2333 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2334 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2335 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2337 array_free (periodic, EMPTY);
1506#endif 2338#endif
1507#if EV_FORK_ENABLE 2339#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2340 array_free (fork, EMPTY);
1509#endif 2341#endif
2342#if EV_CLEANUP_ENABLE
2343 array_free (cleanup, EMPTY);
2344#endif
1510 array_free (prepare, EMPTY); 2345 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2346 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2347#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2348 array_free (async, EMPTY);
1514#endif 2349#endif
1515 2350
1516 backend = 0; 2351 backend = 0;
2352
2353#if EV_MULTIPLICITY
2354 if (ev_is_default_loop (EV_A))
2355#endif
2356 ev_default_loop_ptr = 0;
2357#if EV_MULTIPLICITY
2358 else
2359 ev_free (EV_A);
2360#endif
1517} 2361}
1518 2362
1519#if EV_USE_INOTIFY 2363#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2364inline_size void infy_fork (EV_P);
1521#endif 2365#endif
… …
1536 infy_fork (EV_A); 2380 infy_fork (EV_A);
1537#endif 2381#endif
1538 2382
1539 if (ev_is_active (&pipe_w)) 2383 if (ev_is_active (&pipe_w))
1540 { 2384 {
1541 /* this "locks" the handlers against writing to the pipe */ 2385 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547 2386
1548 ev_ref (EV_A); 2387 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2388 ev_io_stop (EV_A_ &pipe_w);
1550 2389
1551#if EV_USE_EVENTFD 2390#if EV_USE_EVENTFD
… …
1553 close (evfd); 2392 close (evfd);
1554#endif 2393#endif
1555 2394
1556 if (evpipe [0] >= 0) 2395 if (evpipe [0] >= 0)
1557 { 2396 {
1558 close (evpipe [0]); 2397 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 2398 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 2399 }
1561 2400
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 2402 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2403 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2404 pipecb (EV_A_ &pipe_w, EV_READ);
2405#endif
1565 } 2406 }
1566 2407
1567 postfork = 0; 2408 postfork = 0;
1568} 2409}
1569 2410
1570#if EV_MULTIPLICITY 2411#if EV_MULTIPLICITY
1571 2412
1572struct ev_loop * 2413struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2414ev_loop_new (unsigned int flags)
1574{ 2415{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2417
1577 memset (loop, 0, sizeof (struct ev_loop)); 2418 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2419 loop_init (EV_A_ flags);
1580 2420
1581 if (ev_backend (EV_A)) 2421 if (ev_backend (EV_A))
1582 return loop; 2422 return EV_A;
1583 2423
2424 ev_free (EV_A);
1584 return 0; 2425 return 0;
1585} 2426}
1586 2427
1587void 2428#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 2429
1600#if EV_VERIFY 2430#if EV_VERIFY
1601static void noinline 2431static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2432verify_watcher (EV_P_ W w)
1603{ 2433{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2434 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2435
1606 if (w->pending) 2436 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2437 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2438}
1609 2439
1610static void noinline 2440static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2441verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2442{
1613 int i; 2443 int i;
1614 2444
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2445 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2450
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2451 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2452 }
1623} 2453}
1624 2454
1625static void noinline 2455static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2456array_verify (EV_P_ W *ws, int cnt)
1627{ 2457{
1628 while (cnt--) 2458 while (cnt--)
1629 { 2459 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2460 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2461 verify_watcher (EV_A_ ws [cnt]);
1632 } 2462 }
1633} 2463}
1634#endif 2464#endif
1635 2465
1636void 2466#if EV_FEATURE_API
2467void ecb_cold
1637ev_loop_verify (EV_P) 2468ev_verify (EV_P)
1638{ 2469{
1639#if EV_VERIFY 2470#if EV_VERIFY
1640 int i; 2471 int i;
1641 WL w; 2472 WL w;
1642 2473
… …
1676#if EV_FORK_ENABLE 2507#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2508 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2509 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2510#endif
1680 2511
2512#if EV_CLEANUP_ENABLE
2513 assert (cleanupmax >= cleanupcnt);
2514 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2515#endif
2516
1681#if EV_ASYNC_ENABLE 2517#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2518 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2519 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2520#endif
1685 2521
2522#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2523 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2524 array_verify (EV_A_ (W *)prepares, preparecnt);
2525#endif
1688 2526
2527#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2528 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2529 array_verify (EV_A_ (W *)checks, checkcnt);
2530#endif
1691 2531
1692# if 0 2532# if 0
2533#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2535 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2536#endif
1695# endif 2537# endif
1696#endif 2538#endif
1697} 2539}
1698 2540#endif
1699#endif /* multiplicity */
1700 2541
1701#if EV_MULTIPLICITY 2542#if EV_MULTIPLICITY
1702struct ev_loop * 2543struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2544#else
1705int 2545int
2546#endif
1706ev_default_loop (unsigned int flags) 2547ev_default_loop (unsigned int flags)
1707#endif
1708{ 2548{
1709 if (!ev_default_loop_ptr) 2549 if (!ev_default_loop_ptr)
1710 { 2550 {
1711#if EV_MULTIPLICITY 2551#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2552 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2553#else
1714 ev_default_loop_ptr = 1; 2554 ev_default_loop_ptr = 1;
1715#endif 2555#endif
1716 2556
1717 loop_init (EV_A_ flags); 2557 loop_init (EV_A_ flags);
1718 2558
1719 if (ev_backend (EV_A)) 2559 if (ev_backend (EV_A))
1720 { 2560 {
1721#ifndef _WIN32 2561#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2562 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2563 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2564 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2565 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2566#endif
… …
1731 2571
1732 return ev_default_loop_ptr; 2572 return ev_default_loop_ptr;
1733} 2573}
1734 2574
1735void 2575void
1736ev_default_destroy (void) 2576ev_loop_fork (EV_P)
1737{ 2577{
1738#if EV_MULTIPLICITY
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */ 2578 postfork = 1; /* must be in line with ev_default_fork */
1760} 2579}
1761 2580
1762/*****************************************************************************/ 2581/*****************************************************************************/
1763 2582
1764void 2583void
1765ev_invoke (EV_P_ void *w, int revents) 2584ev_invoke (EV_P_ void *w, int revents)
1766{ 2585{
1767 EV_CB_INVOKE ((W)w, revents); 2586 EV_CB_INVOKE ((W)w, revents);
1768} 2587}
1769 2588
1770inline_speed void 2589unsigned int
1771call_pending (EV_P) 2590ev_pending_count (EV_P)
2591{
2592 int pri;
2593 unsigned int count = 0;
2594
2595 for (pri = NUMPRI; pri--; )
2596 count += pendingcnt [pri];
2597
2598 return count;
2599}
2600
2601void noinline
2602ev_invoke_pending (EV_P)
1772{ 2603{
1773 int pri; 2604 int pri;
1774 2605
1775 for (pri = NUMPRI; pri--; ) 2606 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2607 while (pendingcnt [pri])
1777 { 2608 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1779
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782 2610
1783 p->w->pending = 0; 2611 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2612 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2613 EV_FREQUENT_CHECK;
1786 } 2614 }
… …
1843 EV_FREQUENT_CHECK; 2671 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2672 feed_reverse (EV_A_ (W)w);
1845 } 2673 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2674 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2675
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2676 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2677 }
1850} 2678}
1851 2679
1852#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
2681
2682static void noinline
2683periodic_recalc (EV_P_ ev_periodic *w)
2684{
2685 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2686 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2687
2688 /* the above almost always errs on the low side */
2689 while (at <= ev_rt_now)
2690 {
2691 ev_tstamp nat = at + w->interval;
2692
2693 /* when resolution fails us, we use ev_rt_now */
2694 if (expect_false (nat == at))
2695 {
2696 at = ev_rt_now;
2697 break;
2698 }
2699
2700 at = nat;
2701 }
2702
2703 ev_at (w) = at;
2704}
2705
1853/* make periodics pending */ 2706/* make periodics pending */
1854inline_size void 2707inline_size void
1855periodics_reify (EV_P) 2708periodics_reify (EV_P)
1856{ 2709{
1857 EV_FREQUENT_CHECK; 2710 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2729 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2730 downheap (periodics, periodiccnt, HEAP0);
1878 } 2731 }
1879 else if (w->interval) 2732 else if (w->interval)
1880 { 2733 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2734 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 2735 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2736 downheap (periodics, periodiccnt, HEAP0);
1897 } 2737 }
1898 else 2738 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2746 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2747 }
1908} 2748}
1909 2749
1910/* simply recalculate all periodics */ 2750/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2751/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2752static void noinline ecb_cold
1913periodics_reschedule (EV_P) 2753periodics_reschedule (EV_P)
1914{ 2754{
1915 int i; 2755 int i;
1916 2756
1917 /* adjust periodics after time jump */ 2757 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2760 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2761
1922 if (w->reschedule_cb) 2762 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2763 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2764 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2765 periodic_recalc (EV_A_ w);
1926 2766
1927 ANHE_at_cache (periodics [i]); 2767 ANHE_at_cache (periodics [i]);
1928 } 2768 }
1929 2769
1930 reheap (periodics, periodiccnt); 2770 reheap (periodics, periodiccnt);
1931} 2771}
1932#endif 2772#endif
1933 2773
1934/* adjust all timers by a given offset */ 2774/* adjust all timers by a given offset */
1935static void noinline 2775static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 2776timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 2777{
1938 int i; 2778 int i;
1939 2779
1940 for (i = 0; i < timercnt; ++i) 2780 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 2784 ANHE_at_cache (*he);
1945 } 2785 }
1946} 2786}
1947 2787
1948/* fetch new monotonic and realtime times from the kernel */ 2788/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2789/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2790inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2791time_update (EV_P_ ev_tstamp max_block)
1952{ 2792{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 2793#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 2794 if (expect_true (have_monotonic))
1957 { 2795 {
2796 int i;
1958 ev_tstamp odiff = rtmn_diff; 2797 ev_tstamp odiff = rtmn_diff;
1959 2798
1960 mn_now = get_clock (); 2799 mn_now = get_clock ();
1961 2800
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2801 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1978 * doesn't hurt either as we only do this on time-jumps or 2817 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 2818 * in the unlikely event of having been preempted here.
1980 */ 2819 */
1981 for (i = 4; --i; ) 2820 for (i = 4; --i; )
1982 { 2821 {
2822 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 2823 rtmn_diff = ev_rt_now - mn_now;
1984 2824
2825 diff = odiff - rtmn_diff;
2826
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2827 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1986 return; /* all is well */ 2828 return; /* all is well */
1987 2829
1988 ev_rt_now = ev_time (); 2830 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 2831 mn_now = get_clock ();
1990 now_floor = mn_now; 2832 now_floor = mn_now;
… …
2012 2854
2013 mn_now = ev_rt_now; 2855 mn_now = ev_rt_now;
2014 } 2856 }
2015} 2857}
2016 2858
2017static int loop_done;
2018
2019void 2859void
2020ev_loop (EV_P_ int flags) 2860ev_run (EV_P_ int flags)
2021{ 2861{
2862#if EV_FEATURE_API
2863 ++loop_depth;
2864#endif
2865
2866 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2867
2022 loop_done = EVUNLOOP_CANCEL; 2868 loop_done = EVBREAK_CANCEL;
2023 2869
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2870 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 2871
2026 do 2872 do
2027 { 2873 {
2028#if EV_VERIFY >= 2 2874#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 2875 ev_verify (EV_A);
2030#endif 2876#endif
2031 2877
2032#ifndef _WIN32 2878#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 2879 if (expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 2880 if (expect_false (getpid () != curpid))
… …
2042 /* we might have forked, so queue fork handlers */ 2888 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 2889 if (expect_false (postfork))
2044 if (forkcnt) 2890 if (forkcnt)
2045 { 2891 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2892 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 2893 EV_INVOKE_PENDING;
2048 } 2894 }
2049#endif 2895#endif
2050 2896
2897#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 2898 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 2899 if (expect_false (preparecnt))
2053 { 2900 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2901 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 2902 EV_INVOKE_PENDING;
2056 } 2903 }
2904#endif
2905
2906 if (expect_false (loop_done))
2907 break;
2057 2908
2058 /* we might have forked, so reify kernel state if necessary */ 2909 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 2910 if (expect_false (postfork))
2060 loop_fork (EV_A); 2911 loop_fork (EV_A);
2061 2912
… …
2065 /* calculate blocking time */ 2916 /* calculate blocking time */
2066 { 2917 {
2067 ev_tstamp waittime = 0.; 2918 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 2919 ev_tstamp sleeptime = 0.;
2069 2920
2921 /* remember old timestamp for io_blocktime calculation */
2922 ev_tstamp prev_mn_now = mn_now;
2923
2924 /* update time to cancel out callback processing overhead */
2925 time_update (EV_A_ 1e100);
2926
2927 /* from now on, we want a pipe-wake-up */
2928 pipe_write_wanted = 1;
2929
2930 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2931
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2932 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 2933 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 2934 waittime = MAX_BLOCKTIME;
2076 2935
2077 if (timercnt) 2936 if (timercnt)
2078 { 2937 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2938 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 2939 if (waittime > to) waittime = to;
2081 } 2940 }
2082 2941
2083#if EV_PERIODIC_ENABLE 2942#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 2943 if (periodiccnt)
2085 { 2944 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2945 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 2946 if (waittime > to) waittime = to;
2088 } 2947 }
2089#endif 2948#endif
2090 2949
2950 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 2951 if (expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 2952 waittime = timeout_blocktime;
2093 2953
2094 sleeptime = waittime - backend_fudge; 2954 /* at this point, we NEED to wait, so we have to ensure */
2955 /* to pass a minimum nonzero value to the backend */
2956 if (expect_false (waittime < backend_mintime))
2957 waittime = backend_mintime;
2095 2958
2959 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 2960 if (expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 2961 {
2962 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2963
2964 if (sleeptime > waittime - backend_mintime)
2965 sleeptime = waittime - backend_mintime;
2966
2967 if (expect_true (sleeptime > 0.))
2968 {
2101 ev_sleep (sleeptime); 2969 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 2970 waittime -= sleeptime;
2971 }
2103 } 2972 }
2104 } 2973 }
2105 2974
2975#if EV_FEATURE_API
2106 ++loop_count; 2976 ++loop_count;
2977#endif
2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 2979 backend_poll (EV_A_ waittime);
2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2983
2984 if (pipe_write_skipped)
2985 {
2986 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 }
2989
2108 2990
2109 /* update ev_rt_now, do magic */ 2991 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 2992 time_update (EV_A_ waittime + sleeptime);
2111 } 2993 }
2112 2994
… …
2119#if EV_IDLE_ENABLE 3001#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 3002 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 3003 idle_reify (EV_A);
2122#endif 3004#endif
2123 3005
3006#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 3007 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 3008 if (expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3009 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3010#endif
2127 3011
2128 call_pending (EV_A); 3012 EV_INVOKE_PENDING;
2129 } 3013 }
2130 while (expect_true ( 3014 while (expect_true (
2131 activecnt 3015 activecnt
2132 && !loop_done 3016 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3017 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 3018 ));
2135 3019
2136 if (loop_done == EVUNLOOP_ONE) 3020 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 3021 loop_done = EVBREAK_CANCEL;
3022
3023#if EV_FEATURE_API
3024 --loop_depth;
3025#endif
2138} 3026}
2139 3027
2140void 3028void
2141ev_unloop (EV_P_ int how) 3029ev_break (EV_P_ int how)
2142{ 3030{
2143 loop_done = how; 3031 loop_done = how;
2144} 3032}
2145 3033
2146void 3034void
… …
2193inline_size void 3081inline_size void
2194wlist_del (WL *head, WL elem) 3082wlist_del (WL *head, WL elem)
2195{ 3083{
2196 while (*head) 3084 while (*head)
2197 { 3085 {
2198 if (*head == elem) 3086 if (expect_true (*head == elem))
2199 { 3087 {
2200 *head = elem->next; 3088 *head = elem->next;
2201 return; 3089 break;
2202 } 3090 }
2203 3091
2204 head = &(*head)->next; 3092 head = &(*head)->next;
2205 } 3093 }
2206} 3094}
… …
2234} 3122}
2235 3123
2236inline_size void 3124inline_size void
2237pri_adjust (EV_P_ W w) 3125pri_adjust (EV_P_ W w)
2238{ 3126{
2239 int pri = w->priority; 3127 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3128 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 3130 ev_set_priority (w, pri);
2243} 3131}
2244 3132
2245inline_speed void 3133inline_speed void
2246ev_start (EV_P_ W w, int active) 3134ev_start (EV_P_ W w, int active)
2247{ 3135{
… …
2266 3154
2267 if (expect_false (ev_is_active (w))) 3155 if (expect_false (ev_is_active (w)))
2268 return; 3156 return;
2269 3157
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3158 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2271 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3159 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 3160
2273 EV_FREQUENT_CHECK; 3161 EV_FREQUENT_CHECK;
2274 3162
2275 ev_start (EV_A_ (W)w, 1); 3163 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2277 wlist_add (&anfds[fd].head, (WL)w); 3165 wlist_add (&anfds[fd].head, (WL)w);
2278 3166
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3167 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 3168 w->events &= ~EV__IOFDSET;
2281 3169
2282 EV_FREQUENT_CHECK; 3170 EV_FREQUENT_CHECK;
2283} 3171}
2284 3172
… …
2294 EV_FREQUENT_CHECK; 3182 EV_FREQUENT_CHECK;
2295 3183
2296 wlist_del (&anfds[w->fd].head, (WL)w); 3184 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 3185 ev_stop (EV_A_ (W)w);
2298 3186
2299 fd_change (EV_A_ w->fd, 1); 3187 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 3188
2301 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2302} 3190}
2303 3191
2304void noinline 3192void noinline
… …
2346 timers [active] = timers [timercnt + HEAP0]; 3234 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 3235 adjustheap (timers, timercnt, active);
2348 } 3236 }
2349 } 3237 }
2350 3238
2351 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now; 3239 ev_at (w) -= mn_now;
2354 3240
2355 ev_stop (EV_A_ (W)w); 3241 ev_stop (EV_A_ (W)w);
3242
3243 EV_FREQUENT_CHECK;
2356} 3244}
2357 3245
2358void noinline 3246void noinline
2359ev_timer_again (EV_P_ ev_timer *w) 3247ev_timer_again (EV_P_ ev_timer *w)
2360{ 3248{
… …
2378 } 3266 }
2379 3267
2380 EV_FREQUENT_CHECK; 3268 EV_FREQUENT_CHECK;
2381} 3269}
2382 3270
3271ev_tstamp
3272ev_timer_remaining (EV_P_ ev_timer *w)
3273{
3274 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3275}
3276
2383#if EV_PERIODIC_ENABLE 3277#if EV_PERIODIC_ENABLE
2384void noinline 3278void noinline
2385ev_periodic_start (EV_P_ ev_periodic *w) 3279ev_periodic_start (EV_P_ ev_periodic *w)
2386{ 3280{
2387 if (expect_false (ev_is_active (w))) 3281 if (expect_false (ev_is_active (w)))
… …
2390 if (w->reschedule_cb) 3284 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3285 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 3286 else if (w->interval)
2393 { 3287 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3288 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2395 /* this formula differs from the one in periodic_reify because we do not always round up */ 3289 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 3290 }
2398 else 3291 else
2399 ev_at (w) = w->offset; 3292 ev_at (w) = w->offset;
2400 3293
2401 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
… …
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 3326 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 3327 adjustheap (periodics, periodiccnt, active);
2435 } 3328 }
2436 } 3329 }
2437 3330
2438 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w); 3331 ev_stop (EV_A_ (W)w);
3332
3333 EV_FREQUENT_CHECK;
2441} 3334}
2442 3335
2443void noinline 3336void noinline
2444ev_periodic_again (EV_P_ ev_periodic *w) 3337ev_periodic_again (EV_P_ ev_periodic *w)
2445{ 3338{
… …
2451 3344
2452#ifndef SA_RESTART 3345#ifndef SA_RESTART
2453# define SA_RESTART 0 3346# define SA_RESTART 0
2454#endif 3347#endif
2455 3348
3349#if EV_SIGNAL_ENABLE
3350
2456void noinline 3351void noinline
2457ev_signal_start (EV_P_ ev_signal *w) 3352ev_signal_start (EV_P_ ev_signal *w)
2458{ 3353{
2459#if EV_MULTIPLICITY
2460 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2461#endif
2462 if (expect_false (ev_is_active (w))) 3354 if (expect_false (ev_is_active (w)))
2463 return; 3355 return;
2464 3356
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3357 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466 3358
2467 evpipe_init (EV_A); 3359#if EV_MULTIPLICITY
3360 assert (("libev: a signal must not be attached to two different loops",
3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 3362
2469 EV_FREQUENT_CHECK; 3363 signals [w->signum - 1].loop = EV_A;
3364#endif
2470 3365
3366 EV_FREQUENT_CHECK;
3367
3368#if EV_USE_SIGNALFD
3369 if (sigfd == -2)
2471 { 3370 {
2472#ifndef _WIN32 3371 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 3372 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 3373 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 3374
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3375 if (sigfd >= 0)
3376 {
3377 fd_intern (sigfd); /* doing it twice will not hurt */
2479 3378
2480#ifndef _WIN32 3379 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 3380
2482#endif 3381 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3382 ev_set_priority (&sigfd_w, EV_MAXPRI);
3383 ev_io_start (EV_A_ &sigfd_w);
3384 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3385 }
2483 } 3386 }
3387
3388 if (sigfd >= 0)
3389 {
3390 /* TODO: check .head */
3391 sigaddset (&sigfd_set, w->signum);
3392 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3393
3394 signalfd (sigfd, &sigfd_set, 0);
3395 }
3396#endif
2484 3397
2485 ev_start (EV_A_ (W)w, 1); 3398 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 3399 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 3400
2488 if (!((WL)w)->next) 3401 if (!((WL)w)->next)
3402# if EV_USE_SIGNALFD
3403 if (sigfd < 0) /*TODO*/
3404# endif
2489 { 3405 {
2490#if _WIN32 3406# ifdef _WIN32
3407 evpipe_init (EV_A);
3408
2491 signal (w->signum, ev_sighandler); 3409 signal (w->signum, ev_sighandler);
2492#else 3410# else
2493 struct sigaction sa; 3411 struct sigaction sa;
3412
3413 evpipe_init (EV_A);
3414
2494 sa.sa_handler = ev_sighandler; 3415 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 3416 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3417 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 3418 sigaction (w->signum, &sa, 0);
3419
3420 if (origflags & EVFLAG_NOSIGMASK)
3421 {
3422 sigemptyset (&sa.sa_mask);
3423 sigaddset (&sa.sa_mask, w->signum);
3424 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3425 }
2498#endif 3426#endif
2499 } 3427 }
2500 3428
2501 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2502} 3430}
2503 3431
2504void noinline 3432void noinline
… …
2512 3440
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 3441 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 3442 ev_stop (EV_A_ (W)w);
2515 3443
2516 if (!signals [w->signum - 1].head) 3444 if (!signals [w->signum - 1].head)
3445 {
3446#if EV_MULTIPLICITY
3447 signals [w->signum - 1].loop = 0; /* unattach from signal */
3448#endif
3449#if EV_USE_SIGNALFD
3450 if (sigfd >= 0)
3451 {
3452 sigset_t ss;
3453
3454 sigemptyset (&ss);
3455 sigaddset (&ss, w->signum);
3456 sigdelset (&sigfd_set, w->signum);
3457
3458 signalfd (sigfd, &sigfd_set, 0);
3459 sigprocmask (SIG_UNBLOCK, &ss, 0);
3460 }
3461 else
3462#endif
2517 signal (w->signum, SIG_DFL); 3463 signal (w->signum, SIG_DFL);
3464 }
2518 3465
2519 EV_FREQUENT_CHECK; 3466 EV_FREQUENT_CHECK;
2520} 3467}
3468
3469#endif
3470
3471#if EV_CHILD_ENABLE
2521 3472
2522void 3473void
2523ev_child_start (EV_P_ ev_child *w) 3474ev_child_start (EV_P_ ev_child *w)
2524{ 3475{
2525#if EV_MULTIPLICITY 3476#if EV_MULTIPLICITY
… …
2529 return; 3480 return;
2530 3481
2531 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2532 3483
2533 ev_start (EV_A_ (W)w, 1); 3484 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3485 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 3486
2536 EV_FREQUENT_CHECK; 3487 EV_FREQUENT_CHECK;
2537} 3488}
2538 3489
2539void 3490void
… …
2543 if (expect_false (!ev_is_active (w))) 3494 if (expect_false (!ev_is_active (w)))
2544 return; 3495 return;
2545 3496
2546 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2547 3498
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 3500 ev_stop (EV_A_ (W)w);
2550 3501
2551 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2552} 3503}
3504
3505#endif
2553 3506
2554#if EV_STAT_ENABLE 3507#if EV_STAT_ENABLE
2555 3508
2556# ifdef _WIN32 3509# ifdef _WIN32
2557# undef lstat 3510# undef lstat
… …
2563#define MIN_STAT_INTERVAL 0.1074891 3516#define MIN_STAT_INTERVAL 0.1074891
2564 3517
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3518static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 3519
2567#if EV_USE_INOTIFY 3520#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192 3521
3522/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2569 3524
2570static void noinline 3525static void noinline
2571infy_add (EV_P_ ev_stat *w) 3526infy_add (EV_P_ ev_stat *w)
2572{ 3527{
2573 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); 3528 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);
2574 3529
2575 if (w->wd < 0) 3530 if (w->wd >= 0)
3531 {
3532 struct statfs sfs;
3533
3534 /* now local changes will be tracked by inotify, but remote changes won't */
3535 /* unless the filesystem is known to be local, we therefore still poll */
3536 /* also do poll on <2.6.25, but with normal frequency */
3537
3538 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */
3542 || sfs.f_type == 0xEF53 /* ext2/3 */
3543 || sfs.f_type == 0x3153464a /* jfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */
3546 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else
3549 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 3550 }
3551 else
3552 {
3553 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3554 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2578 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2579 3555
2580 /* monitor some parent directory for speedup hints */ 3556 /* if path is not there, monitor some parent directory for speedup hints */
2581 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3557 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 3558 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3559 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 3560 {
2585 char path [4096]; 3561 char path [4096];
… …
2595 if (!pend || pend == path) 3571 if (!pend || pend == path)
2596 break; 3572 break;
2597 3573
2598 *pend = 0; 3574 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 3575 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 3576 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3577 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 3578 }
2603 } 3579 }
2604 3580
2605 if (w->wd >= 0) 3581 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3582 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 3583
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 3584 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 3585 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2611 /* also do poll on <2.6.25, but with normal frequency */
2612 struct statfs sfs;
2613
2614 if (fs_2625 && !statfs (w->path, &sfs))
2615 if (sfs.f_type == 0x1373 /* devfs */
2616 || sfs.f_type == 0xEF53 /* ext2/3 */
2617 || sfs.f_type == 0x3153464a /* jfs */
2618 || sfs.f_type == 0x52654973 /* reiser3 */
2619 || sfs.f_type == 0x01021994 /* tempfs */
2620 || sfs.f_type == 0x58465342 /* xfs */)
2621 return;
2622
2623 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2624 ev_timer_again (EV_A_ &w->timer); 3586 ev_timer_again (EV_A_ &w->timer);
2625 } 3587 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 3588}
2627 3589
2628static void noinline 3590static void noinline
2629infy_del (EV_P_ ev_stat *w) 3591infy_del (EV_P_ ev_stat *w)
2630{ 3592{
… …
2633 3595
2634 if (wd < 0) 3596 if (wd < 0)
2635 return; 3597 return;
2636 3598
2637 w->wd = -2; 3599 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3600 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 3601 wlist_del (&fs_hash [slot].head, (WL)w);
2640 3602
2641 /* remove this watcher, if others are watching it, they will rearm */ 3603 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 3604 inotify_rm_watch (fs_fd, wd);
2643} 3605}
… …
2645static void noinline 3607static void noinline
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3608infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 3609{
2648 if (slot < 0) 3610 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 3611 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3612 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 3613 infy_wd (EV_A_ slot, wd, ev);
2652 else 3614 else
2653 { 3615 {
2654 WL w_; 3616 WL w_;
2655 3617
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3618 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 3619 {
2658 ev_stat *w = (ev_stat *)w_; 3620 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 3621 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 3622
2661 if (w->wd == wd || wd == -1) 3623 if (w->wd == wd || wd == -1)
2662 { 3624 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3625 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 3626 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3627 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 3628 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 3629 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 3630 }
2669 3631
2670 stat_timer_cb (EV_A_ &w->timer, 0); 3632 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 3637
2676static void 3638static void
2677infy_cb (EV_P_ ev_io *w, int revents) 3639infy_cb (EV_P_ ev_io *w, int revents)
2678{ 3640{
2679 char buf [EV_INOTIFY_BUFSIZE]; 3641 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 3642 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 3643 int len = read (fs_fd, buf, sizeof (buf));
2683 3644
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3645 for (ofs = 0; ofs < len; )
3646 {
3647 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3648 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3649 ofs += sizeof (struct inotify_event) + ev->len;
3650 }
2686} 3651}
2687 3652
2688inline_size void 3653inline_size void ecb_cold
2689check_2625 (EV_P) 3654ev_check_2625 (EV_P)
2690{ 3655{
2691 /* kernels < 2.6.25 are borked 3656 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3657 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 3658 */
2694 struct utsname buf; 3659 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 3660 return;
2699 3661
2700 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2701 return;
2702
2703 if (major < 2
2704 || (major == 2 && minor < 6)
2705 || (major == 2 && minor == 6 && micro < 25))
2706 return;
2707
2708 fs_2625 = 1; 3662 fs_2625 = 1;
3663}
3664
3665inline_size int
3666infy_newfd (void)
3667{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0)
3671 return fd;
3672#endif
3673 return inotify_init ();
2709} 3674}
2710 3675
2711inline_size void 3676inline_size void
2712infy_init (EV_P) 3677infy_init (EV_P)
2713{ 3678{
2714 if (fs_fd != -2) 3679 if (fs_fd != -2)
2715 return; 3680 return;
2716 3681
2717 fs_fd = -1; 3682 fs_fd = -1;
2718 3683
2719 check_2625 (EV_A); 3684 ev_check_2625 (EV_A);
2720 3685
2721 fs_fd = inotify_init (); 3686 fs_fd = infy_newfd ();
2722 3687
2723 if (fs_fd >= 0) 3688 if (fs_fd >= 0)
2724 { 3689 {
3690 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3691 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 3692 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 3693 ev_io_start (EV_A_ &fs_w);
3694 ev_unref (EV_A);
2728 } 3695 }
2729} 3696}
2730 3697
2731inline_size void 3698inline_size void
2732infy_fork (EV_P) 3699infy_fork (EV_P)
… …
2734 int slot; 3701 int slot;
2735 3702
2736 if (fs_fd < 0) 3703 if (fs_fd < 0)
2737 return; 3704 return;
2738 3705
3706 ev_ref (EV_A);
3707 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 3708 close (fs_fd);
2740 fs_fd = inotify_init (); 3709 fs_fd = infy_newfd ();
2741 3710
3711 if (fs_fd >= 0)
3712 {
3713 fd_intern (fs_fd);
3714 ev_io_set (&fs_w, fs_fd, EV_READ);
3715 ev_io_start (EV_A_ &fs_w);
3716 ev_unref (EV_A);
3717 }
3718
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3719 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 3720 {
2744 WL w_ = fs_hash [slot].head; 3721 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 3722 fs_hash [slot].head = 0;
2746 3723
2747 while (w_) 3724 while (w_)
… …
2752 w->wd = -1; 3729 w->wd = -1;
2753 3730
2754 if (fs_fd >= 0) 3731 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 3732 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 3733 else
3734 {
3735 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3736 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 3737 ev_timer_again (EV_A_ &w->timer);
3738 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3739 }
2758 } 3740 }
2759 } 3741 }
2760} 3742}
2761 3743
2762#endif 3744#endif
… …
2779static void noinline 3761static void noinline
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3762stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 3763{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3764 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 3765
2784 /* we copy this here each the time so that */ 3766 ev_statdata prev = w->attr;
2785 /* prev has the old value when the callback gets invoked */
2786 w->prev = w->attr;
2787 ev_stat_stat (EV_A_ w); 3767 ev_stat_stat (EV_A_ w);
2788 3768
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3769 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 3770 if (
2791 w->prev.st_dev != w->attr.st_dev 3771 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 3772 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 3773 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 3774 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 3775 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 3776 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 3777 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 3778 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 3779 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 3780 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 3781 || prev.st_ctime != w->attr.st_ctime
2802 ) { 3782 ) {
3783 /* we only update w->prev on actual differences */
3784 /* in case we test more often than invoke the callback, */
3785 /* to ensure that prev is always different to attr */
3786 w->prev = prev;
3787
2803 #if EV_USE_INOTIFY 3788 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 3789 if (fs_fd >= 0)
2805 { 3790 {
2806 infy_del (EV_A_ w); 3791 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 3792 infy_add (EV_A_ w);
… …
2832 3817
2833 if (fs_fd >= 0) 3818 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 3819 infy_add (EV_A_ w);
2835 else 3820 else
2836#endif 3821#endif
3822 {
2837 ev_timer_again (EV_A_ &w->timer); 3823 ev_timer_again (EV_A_ &w->timer);
3824 ev_unref (EV_A);
3825 }
2838 3826
2839 ev_start (EV_A_ (W)w, 1); 3827 ev_start (EV_A_ (W)w, 1);
2840 3828
2841 EV_FREQUENT_CHECK; 3829 EV_FREQUENT_CHECK;
2842} 3830}
… …
2851 EV_FREQUENT_CHECK; 3839 EV_FREQUENT_CHECK;
2852 3840
2853#if EV_USE_INOTIFY 3841#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 3842 infy_del (EV_A_ w);
2855#endif 3843#endif
3844
3845 if (ev_is_active (&w->timer))
3846 {
3847 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 3848 ev_timer_stop (EV_A_ &w->timer);
3849 }
2857 3850
2858 ev_stop (EV_A_ (W)w); 3851 ev_stop (EV_A_ (W)w);
2859 3852
2860 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2861} 3854}
… …
2906 3899
2907 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2908} 3901}
2909#endif 3902#endif
2910 3903
3904#if EV_PREPARE_ENABLE
2911void 3905void
2912ev_prepare_start (EV_P_ ev_prepare *w) 3906ev_prepare_start (EV_P_ ev_prepare *w)
2913{ 3907{
2914 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
2915 return; 3909 return;
… …
2941 3935
2942 ev_stop (EV_A_ (W)w); 3936 ev_stop (EV_A_ (W)w);
2943 3937
2944 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2945} 3939}
3940#endif
2946 3941
3942#if EV_CHECK_ENABLE
2947void 3943void
2948ev_check_start (EV_P_ ev_check *w) 3944ev_check_start (EV_P_ ev_check *w)
2949{ 3945{
2950 if (expect_false (ev_is_active (w))) 3946 if (expect_false (ev_is_active (w)))
2951 return; 3947 return;
… …
2977 3973
2978 ev_stop (EV_A_ (W)w); 3974 ev_stop (EV_A_ (W)w);
2979 3975
2980 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
2981} 3977}
3978#endif
2982 3979
2983#if EV_EMBED_ENABLE 3980#if EV_EMBED_ENABLE
2984void noinline 3981void noinline
2985ev_embed_sweep (EV_P_ ev_embed *w) 3982ev_embed_sweep (EV_P_ ev_embed *w)
2986{ 3983{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 3984 ev_run (w->other, EVRUN_NOWAIT);
2988} 3985}
2989 3986
2990static void 3987static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 3988embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 3989{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3990 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 3991
2995 if (ev_cb (w)) 3992 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3993 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 3994 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 3995 ev_run (w->other, EVRUN_NOWAIT);
2999} 3996}
3000 3997
3001static void 3998static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3999embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 4000{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4001 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 4002
3006 { 4003 {
3007 struct ev_loop *loop = w->other; 4004 EV_P = w->other;
3008 4005
3009 while (fdchangecnt) 4006 while (fdchangecnt)
3010 { 4007 {
3011 fd_reify (EV_A); 4008 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4009 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 4010 }
3014 } 4011 }
3015} 4012}
3016 4013
3017static void 4014static void
… …
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4017 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 4018
3022 ev_embed_stop (EV_A_ w); 4019 ev_embed_stop (EV_A_ w);
3023 4020
3024 { 4021 {
3025 struct ev_loop *loop = w->other; 4022 EV_P = w->other;
3026 4023
3027 ev_loop_fork (EV_A); 4024 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4025 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4026 }
3030 4027
3031 ev_embed_start (EV_A_ w); 4028 ev_embed_start (EV_A_ w);
3032} 4029}
3033 4030
… …
3044{ 4041{
3045 if (expect_false (ev_is_active (w))) 4042 if (expect_false (ev_is_active (w)))
3046 return; 4043 return;
3047 4044
3048 { 4045 {
3049 struct ev_loop *loop = w->other; 4046 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4047 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4048 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 4049 }
3053 4050
3054 EV_FREQUENT_CHECK; 4051 EV_FREQUENT_CHECK;
… …
3081 4078
3082 ev_io_stop (EV_A_ &w->io); 4079 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 4080 ev_prepare_stop (EV_A_ &w->prepare);
3084 ev_fork_stop (EV_A_ &w->fork); 4081 ev_fork_stop (EV_A_ &w->fork);
3085 4082
4083 ev_stop (EV_A_ (W)w);
4084
3086 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3087} 4086}
3088#endif 4087#endif
3089 4088
3090#if EV_FORK_ENABLE 4089#if EV_FORK_ENABLE
… …
3123 4122
3124 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
3125} 4124}
3126#endif 4125#endif
3127 4126
4127#if EV_CLEANUP_ENABLE
4128void
4129ev_cleanup_start (EV_P_ ev_cleanup *w)
4130{
4131 if (expect_false (ev_is_active (w)))
4132 return;
4133
4134 EV_FREQUENT_CHECK;
4135
4136 ev_start (EV_A_ (W)w, ++cleanupcnt);
4137 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4138 cleanups [cleanupcnt - 1] = w;
4139
4140 /* cleanup watchers should never keep a refcount on the loop */
4141 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK;
4143}
4144
4145void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w)
4147{
4148 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w)))
4150 return;
4151
4152 EV_FREQUENT_CHECK;
4153 ev_ref (EV_A);
4154
4155 {
4156 int active = ev_active (w);
4157
4158 cleanups [active - 1] = cleanups [--cleanupcnt];
4159 ev_active (cleanups [active - 1]) = active;
4160 }
4161
4162 ev_stop (EV_A_ (W)w);
4163
4164 EV_FREQUENT_CHECK;
4165}
4166#endif
4167
3128#if EV_ASYNC_ENABLE 4168#if EV_ASYNC_ENABLE
3129void 4169void
3130ev_async_start (EV_P_ ev_async *w) 4170ev_async_start (EV_P_ ev_async *w)
3131{ 4171{
3132 if (expect_false (ev_is_active (w))) 4172 if (expect_false (ev_is_active (w)))
3133 return; 4173 return;
3134 4174
4175 w->sent = 0;
4176
3135 evpipe_init (EV_A); 4177 evpipe_init (EV_A);
3136 4178
3137 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
3138 4180
3139 ev_start (EV_A_ (W)w, ++asynccnt); 4181 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3166 4208
3167void 4209void
3168ev_async_send (EV_P_ ev_async *w) 4210ev_async_send (EV_P_ ev_async *w)
3169{ 4211{
3170 w->sent = 1; 4212 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 4213 evpipe_write (EV_A_ &async_pending);
3172} 4214}
3173#endif 4215#endif
3174 4216
3175/*****************************************************************************/ 4217/*****************************************************************************/
3176 4218
… …
3216{ 4258{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4259 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218 4260
3219 if (expect_false (!once)) 4261 if (expect_false (!once))
3220 { 4262 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4263 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3222 return; 4264 return;
3223 } 4265 }
3224 4266
3225 once->cb = cb; 4267 once->cb = cb;
3226 once->arg = arg; 4268 once->arg = arg;
… …
3241} 4283}
3242 4284
3243/*****************************************************************************/ 4285/*****************************************************************************/
3244 4286
3245#if EV_WALK_ENABLE 4287#if EV_WALK_ENABLE
3246void 4288void ecb_cold
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4289ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3248{ 4290{
3249 int i, j; 4291 int i, j;
3250 ev_watcher_list *wl, *wn; 4292 ev_watcher_list *wl, *wn;
3251 4293
… …
3295 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4337 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3296#endif 4338#endif
3297 4339
3298#if EV_IDLE_ENABLE 4340#if EV_IDLE_ENABLE
3299 if (types & EV_IDLE) 4341 if (types & EV_IDLE)
3300 for (j = NUMPRI; i--; ) 4342 for (j = NUMPRI; j--; )
3301 for (i = idlecnt [j]; i--; ) 4343 for (i = idlecnt [j]; i--; )
3302 cb (EV_A_ EV_IDLE, idles [j][i]); 4344 cb (EV_A_ EV_IDLE, idles [j][i]);
3303#endif 4345#endif
3304 4346
3305#if EV_FORK_ENABLE 4347#if EV_FORK_ENABLE
… …
3313 if (types & EV_ASYNC) 4355 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 4356 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 4357 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 4358#endif
3317 4359
4360#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 4361 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 4362 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 4363# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 4364 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 4365# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 4366 cb (EV_A_ EV_PREPARE, prepares [i]);
4367#endif
3324 4368
4369#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 4370 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 4371 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 4372 cb (EV_A_ EV_CHECK, checks [i]);
4373#endif
3328 4374
4375#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 4376 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 4377 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 4378 for (wl = signals [i].head; wl; )
3332 { 4379 {
3333 wn = wl->next; 4380 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 4381 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 4382 wl = wn;
3336 } 4383 }
4384#endif
3337 4385
4386#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 4387 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 4388 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 4389 for (wl = childs [i]; wl; )
3341 { 4390 {
3342 wn = wl->next; 4391 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 4392 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 4393 wl = wn;
3345 } 4394 }
4395#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 4396/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4397/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 4398}
3349#endif 4399#endif
3350 4400
3351#if EV_MULTIPLICITY 4401#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 4402 #include "ev_wrap.h"
3353#endif 4403#endif
3354 4404
3355#ifdef __cplusplus 4405EV_CPP(})
3356}
3357#endif
3358 4406

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