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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 1.379 by root, Sun Jun 19 17:55:13 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
368#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
369# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
370# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
371#else 493#else
372# define expect(expr,value) (expr) 494 #define ecb_inline static
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 495#endif
377#endif
378 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
381#define inline_size static inline 536#define inline_size ecb_inline
382 537
383#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
384# define inline_speed static noinline 541# define inline_speed static noinline
542#endif
543
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545
546#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0)
385#else 548#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) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
391 551
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
394 554
395typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
401 561
402#if EV_USE_REALTIME 562#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 563/* 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 */ 564/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 566#endif
407 567
408#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 570#endif
411 571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
580#endif
581
412#ifdef _WIN32 582#ifdef _WIN32
413# include "ev_win32.c" 583# include "ev_win32.c"
414#endif 584#endif
415 585
416/*****************************************************************************/ 586/*****************************************************************************/
417 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
418static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
419 687
420void 688void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 690{
423 syserr_cb = cb; 691 syserr_cb = cb;
424} 692}
425 693
426static void noinline 694static void noinline ecb_cold
427ev_syserr (const char *msg) 695ev_syserr (const char *msg)
428{ 696{
429 if (!msg) 697 if (!msg)
430 msg = "(libev) system error"; 698 msg = "(libev) system error";
431 699
432 if (syserr_cb) 700 if (syserr_cb)
433 syserr_cb (msg); 701 syserr_cb (msg);
434 else 702 else
435 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
436 perror (msg); 710 perror (msg);
711#endif
437 abort (); 712 abort ();
438 } 713 }
439} 714}
440 715
441static void * 716static void *
442ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
443{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
444 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
447 */ 725 */
448 726
449 if (size) 727 if (size)
450 return realloc (ptr, size); 728 return realloc (ptr, size);
451 729
452 free (ptr); 730 free (ptr);
453 return 0; 731 return 0;
732#endif
454} 733}
455 734
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 736
458void 737void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 739{
461 alloc = cb; 740 alloc = cb;
462} 741}
463 742
… …
466{ 745{
467 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
468 747
469 if (!ptr && size) 748 if (!ptr && size)
470 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
472 abort (); 755 abort ();
473 } 756 }
474 757
475 return ptr; 758 return ptr;
476} 759}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
480 763
481/*****************************************************************************/ 764/*****************************************************************************/
482 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
483/* file descriptor info structure */ 769/* file descriptor info structure */
484typedef struct 770typedef struct
485{ 771{
486 WL head; 772 WL head;
487 unsigned char events; /* the events watched for */ 773 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 774 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 */ 775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 776 unsigned char unused;
491#if EV_USE_EPOLL 777#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 779#endif
494#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 781 SOCKET handle;
782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
496#endif 785#endif
497} ANFD; 786} ANFD;
498 787
499/* stores the pending event set for a given watcher */ 788/* stores the pending event set for a given watcher */
500typedef struct 789typedef struct
… …
555 844
556 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
557 846
558#endif 847#endif
559 848
849#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else
854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
857#endif
858
859#define EVBREAK_RECURSE 0x80
860
560/*****************************************************************************/ 861/*****************************************************************************/
561 862
863#ifndef EV_HAVE_EV_TIME
562ev_tstamp 864ev_tstamp
563ev_time (void) 865ev_time (void)
564{ 866{
565#if EV_USE_REALTIME 867#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 868 if (expect_true (have_realtime))
… …
573 875
574 struct timeval tv; 876 struct timeval tv;
575 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 879}
880#endif
578 881
579inline_size ev_tstamp 882inline_size ev_tstamp
580get_clock (void) 883get_clock (void)
581{ 884{
582#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 908 if (delay > 0.)
606 { 909 {
607#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
608 struct timespec ts; 911 struct timespec ts;
609 912
610 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
614#elif defined(_WIN32) 915#elif defined(_WIN32)
615 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
616#else 917#else
617 struct timeval tv; 918 struct timeval tv;
618 919
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 */ 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
626#endif 925#endif
627 } 926 }
628} 927}
629 928
630/*****************************************************************************/ 929/*****************************************************************************/
631 930
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 932
634/* find a suitable new size for the given array, */ 933/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 934/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 935inline_size int
637array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
638{ 937{
639 int ncur = cur + 1; 938 int ncur = cur + 1;
640 939
… …
652 } 951 }
653 952
654 return ncur; 953 return ncur;
655} 954}
656 955
657static noinline void * 956static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
659{ 958{
660 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
662} 961}
… …
736} 1035}
737 1036
738/*****************************************************************************/ 1037/*****************************************************************************/
739 1038
740inline_speed void 1039inline_speed void
741fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1041{
743 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
744 ev_io *w; 1043 ev_io *w;
745 1044
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1049 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
752 } 1051 }
753} 1052}
754 1053
1054/* do not submit kernel events for fds that have reify set */
1055/* because that means they changed while we were polling for new events */
1056inline_speed void
1057fd_event (EV_P_ int fd, int revents)
1058{
1059 ANFD *anfd = anfds + fd;
1060
1061 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents);
1063}
1064
755void 1065void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 1067{
758 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
760} 1070}
761 1071
762/* make sure the external fd watch events are in-sync */ 1072/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1073/* with the kernel/libev internal state */
764inline_size void 1074inline_size void
765fd_reify (EV_P) 1075fd_reify (EV_P)
766{ 1076{
767 int i; 1077 int i;
768 1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
1103
769 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
770 { 1105 {
771 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
773 ev_io *w; 1108 ev_io *w;
774 1109
775 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
776 1112
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1114
780#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1116 {
783 unsigned long arg; 1117 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1118
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1120 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1121
788 #endif 1122 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
790 } 1124 }
791#endif
792 1125
793 { 1126 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); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1128 }
804 1129
805 fdchangecnt = 0; 1130 fdchangecnt = 0;
806} 1131}
807 1132
… …
819 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
820 } 1145 }
821} 1146}
822 1147
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1149inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
826{ 1151{
827 ev_io *w; 1152 ev_io *w;
828 1153
829 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1158 }
834} 1159}
835 1160
836/* check whether the given fd is atcually valid, for error recovery */ 1161/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1162inline_size int ecb_cold
838fd_valid (int fd) 1163fd_valid (int fd)
839{ 1164{
840#ifdef _WIN32 1165#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1167#else
843 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
844#endif 1169#endif
845} 1170}
846 1171
847/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
848static void noinline 1173static void noinline ecb_cold
849fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
850{ 1175{
851 int fd; 1176 int fd;
852 1177
853 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
857} 1182}
858 1183
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1185static void noinline ecb_cold
861fd_enomem (EV_P) 1186fd_enomem (EV_P)
862{ 1187{
863 int fd; 1188 int fd;
864 1189
865 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1191 if (anfds [fd].events)
867 { 1192 {
868 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
869 return; 1194 break;
870 } 1195 }
871} 1196}
872 1197
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1198/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1199static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1205 if (anfds [fd].events)
881 { 1206 {
882 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1210 }
886} 1211}
887 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
888/*****************************************************************************/ 1227/*****************************************************************************/
889 1228
890/* 1229/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * 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 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
894 */ 1233 */
895 1234
896/* 1235/*
… …
964 1303
965 for (;;) 1304 for (;;)
966 { 1305 {
967 int c = k << 1; 1306 int c = k << 1;
968 1307
969 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
970 break; 1309 break;
971 1310
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1312 ? 1 : 0;
974 1313
… …
1010 1349
1011/* move an element suitably so it is in a correct place */ 1350/* move an element suitably so it is in a correct place */
1012inline_size void 1351inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
1014{ 1353{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1355 upheap (heap, k);
1017 else 1356 else
1018 downheap (heap, N, k); 1357 downheap (heap, N, k);
1019} 1358}
1020 1359
… …
1033/*****************************************************************************/ 1372/*****************************************************************************/
1034 1373
1035/* associate signal watchers to a signal signal */ 1374/* associate signal watchers to a signal signal */
1036typedef struct 1375typedef struct
1037{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
1038 WL head; 1381 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1382} ANSIG;
1041 1383
1042static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1385
1047/*****************************************************************************/ 1386/*****************************************************************************/
1048 1387
1049/* used to prepare libev internal fd's */ 1388#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 1389
1063static void noinline 1390static void noinline ecb_cold
1064evpipe_init (EV_P) 1391evpipe_init (EV_P)
1065{ 1392{
1066 if (!ev_is_active (&pipe_w)) 1393 if (!ev_is_active (&pipe_w))
1067 { 1394 {
1068#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1070 { 1401 {
1071 evpipe [0] = -1; 1402 evpipe [0] = -1;
1072 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1405 }
1075 else 1406 else
1076#endif 1407# endif
1077 { 1408 {
1078 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1080 1411
1081 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
… …
1091inline_size void 1422inline_size void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1424{
1094 if (!*flag) 1425 if (!*flag)
1095 { 1426 {
1096 int old_errno = errno; /* save errno because write might clobber it */
1097
1098 *flag = 1; 1427 *flag = 1;
1099 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1100#if EV_USE_EVENTFD 1438#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1439 if (evfd >= 0)
1102 { 1440 {
1103 uint64_t counter = 1; 1441 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1442 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno;
1105 } 1456 }
1106 else
1107#endif
1108 write (evpipe [1], &old_errno, 1);
1109
1110 errno = old_errno;
1111 } 1457 }
1112} 1458}
1113 1459
1114/* called whenever the libev signal pipe */ 1460/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1461/* got some events (signal, async) */
1116static void 1462static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1463pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1464{
1465 int i;
1466
1467 if (revents & EV_READ)
1468 {
1119#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1470 if (evfd >= 0)
1121 { 1471 {
1122 uint64_t counter; 1472 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1473 read (evfd, &counter, sizeof (uint64_t));
1124 } 1474 }
1125 else 1475 else
1126#endif 1476#endif
1127 { 1477 {
1128 char dummy; 1478 char dummy;
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1480 read (evpipe [0], &dummy, 1);
1481 }
1482 }
1483
1484 pipe_write_skipped = 0;
1485
1486#if EV_SIGNAL_ENABLE
1487 if (sig_pending)
1130 } 1488 {
1489 sig_pending = 0;
1131 1490
1132 if (gotsig && ev_is_default_loop (EV_A)) 1491 for (i = EV_NSIG - 1; i--; )
1133 { 1492 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); 1493 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1494 }
1495#endif
1141 1496
1142#if EV_ASYNC_ENABLE 1497#if EV_ASYNC_ENABLE
1143 if (gotasync) 1498 if (async_pending)
1144 { 1499 {
1145 int i; 1500 async_pending = 0;
1146 gotasync = 0;
1147 1501
1148 for (i = asynccnt; i--; ) 1502 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1503 if (asyncs [i]->sent)
1150 { 1504 {
1151 asyncs [i]->sent = 0; 1505 asyncs [i]->sent = 0;
… …
1155#endif 1509#endif
1156} 1510}
1157 1511
1158/*****************************************************************************/ 1512/*****************************************************************************/
1159 1513
1514void
1515ev_feed_signal (int signum)
1516{
1517#if EV_MULTIPLICITY
1518 EV_P = signals [signum - 1].loop;
1519
1520 if (!EV_A)
1521 return;
1522#endif
1523
1524 evpipe_init (EV_A);
1525
1526 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending);
1528}
1529
1160static void 1530static void
1161ev_sighandler (int signum) 1531ev_sighandler (int signum)
1162{ 1532{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1533#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1534 signal (signum, ev_sighandler);
1169#endif 1535#endif
1170 1536
1171 signals [signum - 1].gotsig = 1; 1537 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1538}
1174 1539
1175void noinline 1540void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1541ev_feed_signal_event (EV_P_ int signum)
1177{ 1542{
1178 WL w; 1543 WL w;
1179 1544
1545 if (expect_false (signum <= 0 || signum > EV_NSIG))
1546 return;
1547
1548 --signum;
1549
1180#if EV_MULTIPLICITY 1550#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1551 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1552 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1553
1184 --signum; 1554 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1555 return;
1556#endif
1188 1557
1189 signals [signum].gotsig = 0; 1558 signals [signum].pending = 0;
1190 1559
1191 for (w = signals [signum].head; w; w = w->next) 1560 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1562}
1194 1563
1564#if EV_USE_SIGNALFD
1565static void
1566sigfdcb (EV_P_ ev_io *iow, int revents)
1567{
1568 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1569
1570 for (;;)
1571 {
1572 ssize_t res = read (sigfd, si, sizeof (si));
1573
1574 /* not ISO-C, as res might be -1, but works with SuS */
1575 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1576 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1577
1578 if (res < (ssize_t)sizeof (si))
1579 break;
1580 }
1581}
1582#endif
1583
1584#endif
1585
1195/*****************************************************************************/ 1586/*****************************************************************************/
1196 1587
1588#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 1589static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 1590
1201static ev_signal childev; 1591static ev_signal childev;
1202 1592
1203#ifndef WIFCONTINUED 1593#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 1594# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 1599child_reap (EV_P_ int chain, int pid, int status)
1210{ 1600{
1211 ev_child *w; 1601 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1602 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 1603
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 1605 {
1216 if ((w->pid == pid || !w->pid) 1606 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 1607 && (!traced || (w->flags & 1)))
1218 { 1608 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1609 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 */ 1634 /* 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 */ 1635 /* 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); 1636 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 1637
1248 child_reap (EV_A_ pid, pid, status); 1638 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 1639 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1640 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 1641}
1252 1642
1253#endif 1643#endif
1254 1644
1255/*****************************************************************************/ 1645/*****************************************************************************/
1256 1646
1647#if EV_USE_IOCP
1648# include "ev_iocp.c"
1649#endif
1257#if EV_USE_PORT 1650#if EV_USE_PORT
1258# include "ev_port.c" 1651# include "ev_port.c"
1259#endif 1652#endif
1260#if EV_USE_KQUEUE 1653#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 1654# include "ev_kqueue.c"
… …
1268#endif 1661#endif
1269#if EV_USE_SELECT 1662#if EV_USE_SELECT
1270# include "ev_select.c" 1663# include "ev_select.c"
1271#endif 1664#endif
1272 1665
1273int 1666int ecb_cold
1274ev_version_major (void) 1667ev_version_major (void)
1275{ 1668{
1276 return EV_VERSION_MAJOR; 1669 return EV_VERSION_MAJOR;
1277} 1670}
1278 1671
1279int 1672int ecb_cold
1280ev_version_minor (void) 1673ev_version_minor (void)
1281{ 1674{
1282 return EV_VERSION_MINOR; 1675 return EV_VERSION_MINOR;
1283} 1676}
1284 1677
1285/* return true if we are running with elevated privileges and should ignore env variables */ 1678/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 1679int inline_size ecb_cold
1287enable_secure (void) 1680enable_secure (void)
1288{ 1681{
1289#ifdef _WIN32 1682#ifdef _WIN32
1290 return 0; 1683 return 0;
1291#else 1684#else
1292 return getuid () != geteuid () 1685 return getuid () != geteuid ()
1293 || getgid () != getegid (); 1686 || getgid () != getegid ();
1294#endif 1687#endif
1295} 1688}
1296 1689
1297unsigned int 1690unsigned int ecb_cold
1298ev_supported_backends (void) 1691ev_supported_backends (void)
1299{ 1692{
1300 unsigned int flags = 0; 1693 unsigned int flags = 0;
1301 1694
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1699 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 1700
1308 return flags; 1701 return flags;
1309} 1702}
1310 1703
1311unsigned int 1704unsigned int ecb_cold
1312ev_recommended_backends (void) 1705ev_recommended_backends (void)
1313{ 1706{
1314 unsigned int flags = ev_supported_backends (); 1707 unsigned int flags = ev_supported_backends ();
1315 1708
1316#ifndef __NetBSD__ 1709#ifndef __NetBSD__
… …
1321#ifdef __APPLE__ 1714#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 1715 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1716 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1717 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 1718#endif
1719#ifdef __FreeBSD__
1720 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1721#endif
1326 1722
1327 return flags; 1723 return flags;
1328} 1724}
1329 1725
1330unsigned int 1726unsigned int ecb_cold
1331ev_embeddable_backends (void) 1727ev_embeddable_backends (void)
1332{ 1728{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 1730
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1731 /* 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 */ 1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 1733 flags &= ~EVBACKEND_EPOLL;
1338 1734
1339 return flags; 1735 return flags;
1340} 1736}
1341 1737
1342unsigned int 1738unsigned int
1343ev_backend (EV_P) 1739ev_backend (EV_P)
1344{ 1740{
1345 return backend; 1741 return backend;
1346} 1742}
1347 1743
1744#if EV_FEATURE_API
1348unsigned int 1745unsigned int
1349ev_loop_count (EV_P) 1746ev_iteration (EV_P)
1350{ 1747{
1351 return loop_count; 1748 return loop_count;
1749}
1750
1751unsigned int
1752ev_depth (EV_P)
1753{
1754 return loop_depth;
1352} 1755}
1353 1756
1354void 1757void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 1759{
… …
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 1765{
1363 timeout_blocktime = interval; 1766 timeout_blocktime = interval;
1364} 1767}
1365 1768
1769void
1770ev_set_userdata (EV_P_ void *data)
1771{
1772 userdata = data;
1773}
1774
1775void *
1776ev_userdata (EV_P)
1777{
1778 return userdata;
1779}
1780
1781void
1782ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1783{
1784 invoke_cb = invoke_pending_cb;
1785}
1786
1787void
1788ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1789{
1790 release_cb = release;
1791 acquire_cb = acquire;
1792}
1793#endif
1794
1366/* initialise a loop structure, must be zero-initialised */ 1795/* initialise a loop structure, must be zero-initialised */
1367static void noinline 1796static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 1797loop_init (EV_P_ unsigned int flags)
1369{ 1798{
1370 if (!backend) 1799 if (!backend)
1371 { 1800 {
1801 origflags = flags;
1802
1372#if EV_USE_REALTIME 1803#if EV_USE_REALTIME
1373 if (!have_realtime) 1804 if (!have_realtime)
1374 { 1805 {
1375 struct timespec ts; 1806 struct timespec ts;
1376 1807
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1818 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 1819 have_monotonic = 1;
1389 } 1820 }
1390#endif 1821#endif
1391 1822
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 */ 1823 /* pid check not overridable via env */
1407#ifndef _WIN32 1824#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 1825 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 1826 curpid = getpid ();
1410#endif 1827#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 1829 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 1830 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 1831 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 1832 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 1833
1417 if (!(flags & 0x0000ffffU)) 1834 ev_rt_now = ev_time ();
1835 mn_now = get_clock ();
1836 now_floor = mn_now;
1837 rtmn_diff = ev_rt_now - mn_now;
1838#if EV_FEATURE_API
1839 invoke_cb = ev_invoke_pending;
1840#endif
1841
1842 io_blocktime = 0.;
1843 timeout_blocktime = 0.;
1844 backend = 0;
1845 backend_fd = -1;
1846 sig_pending = 0;
1847#if EV_ASYNC_ENABLE
1848 async_pending = 0;
1849#endif
1850 pipe_write_skipped = 0;
1851 pipe_write_wanted = 0;
1852#if EV_USE_INOTIFY
1853 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1854#endif
1855#if EV_USE_SIGNALFD
1856 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1857#endif
1858
1859 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 1860 flags |= ev_recommended_backends ();
1419 1861
1862#if EV_USE_IOCP
1863 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1864#endif
1420#if EV_USE_PORT 1865#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1866 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 1867#endif
1423#if EV_USE_KQUEUE 1868#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1869 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1878 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 1879#endif
1435 1880
1436 ev_prepare_init (&pending_w, pendingcb); 1881 ev_prepare_init (&pending_w, pendingcb);
1437 1882
1883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 1884 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 1885 ev_set_priority (&pipe_w, EV_MAXPRI);
1886#endif
1440 } 1887 }
1441} 1888}
1442 1889
1443/* free up a loop structure */ 1890/* free up a loop structure */
1444static void noinline 1891void ecb_cold
1445loop_destroy (EV_P) 1892ev_loop_destroy (EV_P)
1446{ 1893{
1447 int i; 1894 int i;
1448 1895
1896#if EV_MULTIPLICITY
1897 /* mimic free (0) */
1898 if (!EV_A)
1899 return;
1900#endif
1901
1902#if EV_CLEANUP_ENABLE
1903 /* queue cleanup watchers (and execute them) */
1904 if (expect_false (cleanupcnt))
1905 {
1906 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1907 EV_INVOKE_PENDING;
1908 }
1909#endif
1910
1911#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev))
1913 {
1914 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev);
1916 }
1917#endif
1918
1449 if (ev_is_active (&pipe_w)) 1919 if (ev_is_active (&pipe_w))
1450 { 1920 {
1451 ev_ref (EV_A); /* signal watcher */ 1921 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 1922 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 1923
1454#if EV_USE_EVENTFD 1924#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1925 if (evfd >= 0)
1456 close (evfd); 1926 close (evfd);
1457#endif 1927#endif
1458 1928
1459 if (evpipe [0] >= 0) 1929 if (evpipe [0] >= 0)
1460 { 1930 {
1461 close (evpipe [0]); 1931 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1932 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1933 }
1464 } 1934 }
1935
1936#if EV_USE_SIGNALFD
1937 if (ev_is_active (&sigfd_w))
1938 close (sigfd);
1939#endif
1465 1940
1466#if EV_USE_INOTIFY 1941#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 1942 if (fs_fd >= 0)
1468 close (fs_fd); 1943 close (fs_fd);
1469#endif 1944#endif
1470 1945
1471 if (backend_fd >= 0) 1946 if (backend_fd >= 0)
1472 close (backend_fd); 1947 close (backend_fd);
1473 1948
1949#if EV_USE_IOCP
1950 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1951#endif
1474#if EV_USE_PORT 1952#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1953 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 1954#endif
1477#if EV_USE_KQUEUE 1955#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1956 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 1971#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 1972 array_free (idle, [i]);
1495#endif 1973#endif
1496 } 1974 }
1497 1975
1498 ev_free (anfds); anfdmax = 0; 1976 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 1977
1500 /* have to use the microsoft-never-gets-it-right macro */ 1978 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 1979 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 1980 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 1981 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 1983 array_free (periodic, EMPTY);
1506#endif 1984#endif
1507#if EV_FORK_ENABLE 1985#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 1986 array_free (fork, EMPTY);
1509#endif 1987#endif
1988#if EV_CLEANUP_ENABLE
1989 array_free (cleanup, EMPTY);
1990#endif
1510 array_free (prepare, EMPTY); 1991 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 1992 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 1993#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 1994 array_free (async, EMPTY);
1514#endif 1995#endif
1515 1996
1516 backend = 0; 1997 backend = 0;
1998
1999#if EV_MULTIPLICITY
2000 if (ev_is_default_loop (EV_A))
2001#endif
2002 ev_default_loop_ptr = 0;
2003#if EV_MULTIPLICITY
2004 else
2005 ev_free (EV_A);
2006#endif
1517} 2007}
1518 2008
1519#if EV_USE_INOTIFY 2009#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2010inline_size void infy_fork (EV_P);
1521#endif 2011#endif
… …
1536 infy_fork (EV_A); 2026 infy_fork (EV_A);
1537#endif 2027#endif
1538 2028
1539 if (ev_is_active (&pipe_w)) 2029 if (ev_is_active (&pipe_w))
1540 { 2030 {
1541 /* this "locks" the handlers against writing to the pipe */ 2031 /* 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 2032
1548 ev_ref (EV_A); 2033 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2034 ev_io_stop (EV_A_ &pipe_w);
1550 2035
1551#if EV_USE_EVENTFD 2036#if EV_USE_EVENTFD
… …
1553 close (evfd); 2038 close (evfd);
1554#endif 2039#endif
1555 2040
1556 if (evpipe [0] >= 0) 2041 if (evpipe [0] >= 0)
1557 { 2042 {
1558 close (evpipe [0]); 2043 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 2044 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 2045 }
1561 2046
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 2048 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2049 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2050 pipecb (EV_A_ &pipe_w, EV_READ);
2051#endif
1565 } 2052 }
1566 2053
1567 postfork = 0; 2054 postfork = 0;
1568} 2055}
1569 2056
1570#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
1571 2058
1572struct ev_loop * 2059struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2060ev_loop_new (unsigned int flags)
1574{ 2061{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2063
1577 memset (loop, 0, sizeof (struct ev_loop)); 2064 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2065 loop_init (EV_A_ flags);
1580 2066
1581 if (ev_backend (EV_A)) 2067 if (ev_backend (EV_A))
1582 return loop; 2068 return EV_A;
1583 2069
2070 ev_free (EV_A);
1584 return 0; 2071 return 0;
1585} 2072}
1586 2073
1587void 2074#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 2075
1600#if EV_VERIFY 2076#if EV_VERIFY
1601static void noinline 2077static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2078verify_watcher (EV_P_ W w)
1603{ 2079{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2080 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2081
1606 if (w->pending) 2082 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2083 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2084}
1609 2085
1610static void noinline 2086static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2087verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2088{
1613 int i; 2089 int i;
1614 2090
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2091 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2096
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2097 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2098 }
1623} 2099}
1624 2100
1625static void noinline 2101static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2102array_verify (EV_P_ W *ws, int cnt)
1627{ 2103{
1628 while (cnt--) 2104 while (cnt--)
1629 { 2105 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2106 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2107 verify_watcher (EV_A_ ws [cnt]);
1632 } 2108 }
1633} 2109}
1634#endif 2110#endif
1635 2111
1636void 2112#if EV_FEATURE_API
2113void ecb_cold
1637ev_loop_verify (EV_P) 2114ev_verify (EV_P)
1638{ 2115{
1639#if EV_VERIFY 2116#if EV_VERIFY
1640 int i; 2117 int i;
1641 WL w; 2118 WL w;
1642 2119
… …
1676#if EV_FORK_ENABLE 2153#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2154 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2155 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2156#endif
1680 2157
2158#if EV_CLEANUP_ENABLE
2159 assert (cleanupmax >= cleanupcnt);
2160 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2161#endif
2162
1681#if EV_ASYNC_ENABLE 2163#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2164 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2165 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2166#endif
1685 2167
2168#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2169 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2170 array_verify (EV_A_ (W *)prepares, preparecnt);
2171#endif
1688 2172
2173#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2174 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2175 array_verify (EV_A_ (W *)checks, checkcnt);
2176#endif
1691 2177
1692# if 0 2178# if 0
2179#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2180 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) 2181 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2182#endif
1695# endif 2183# endif
1696#endif 2184#endif
1697} 2185}
1698 2186#endif
1699#endif /* multiplicity */
1700 2187
1701#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1702struct ev_loop * 2189struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2190#else
1705int 2191int
2192#endif
1706ev_default_loop (unsigned int flags) 2193ev_default_loop (unsigned int flags)
1707#endif
1708{ 2194{
1709 if (!ev_default_loop_ptr) 2195 if (!ev_default_loop_ptr)
1710 { 2196 {
1711#if EV_MULTIPLICITY 2197#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2198 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2199#else
1714 ev_default_loop_ptr = 1; 2200 ev_default_loop_ptr = 1;
1715#endif 2201#endif
1716 2202
1717 loop_init (EV_A_ flags); 2203 loop_init (EV_A_ flags);
1718 2204
1719 if (ev_backend (EV_A)) 2205 if (ev_backend (EV_A))
1720 { 2206 {
1721#ifndef _WIN32 2207#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2208 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2209 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2210 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2211 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2212#endif
… …
1731 2217
1732 return ev_default_loop_ptr; 2218 return ev_default_loop_ptr;
1733} 2219}
1734 2220
1735void 2221void
1736ev_default_destroy (void) 2222ev_loop_fork (EV_P)
1737{ 2223{
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 */ 2224 postfork = 1; /* must be in line with ev_default_fork */
1760} 2225}
1761 2226
1762/*****************************************************************************/ 2227/*****************************************************************************/
1763 2228
1764void 2229void
1765ev_invoke (EV_P_ void *w, int revents) 2230ev_invoke (EV_P_ void *w, int revents)
1766{ 2231{
1767 EV_CB_INVOKE ((W)w, revents); 2232 EV_CB_INVOKE ((W)w, revents);
1768} 2233}
1769 2234
1770inline_speed void 2235unsigned int
1771call_pending (EV_P) 2236ev_pending_count (EV_P)
2237{
2238 int pri;
2239 unsigned int count = 0;
2240
2241 for (pri = NUMPRI; pri--; )
2242 count += pendingcnt [pri];
2243
2244 return count;
2245}
2246
2247void noinline
2248ev_invoke_pending (EV_P)
1772{ 2249{
1773 int pri; 2250 int pri;
1774 2251
1775 for (pri = NUMPRI; pri--; ) 2252 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2253 while (pendingcnt [pri])
1777 { 2254 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2255 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 2256
1783 p->w->pending = 0; 2257 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2258 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2259 EV_FREQUENT_CHECK;
1786 } 2260 }
… …
1843 EV_FREQUENT_CHECK; 2317 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2318 feed_reverse (EV_A_ (W)w);
1845 } 2319 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2320 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2321
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2322 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2323 }
1850} 2324}
1851 2325
1852#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
2327
2328static void noinline
2329periodic_recalc (EV_P_ ev_periodic *w)
2330{
2331 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2332 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2333
2334 /* the above almost always errs on the low side */
2335 while (at <= ev_rt_now)
2336 {
2337 ev_tstamp nat = at + w->interval;
2338
2339 /* when resolution fails us, we use ev_rt_now */
2340 if (expect_false (nat == at))
2341 {
2342 at = ev_rt_now;
2343 break;
2344 }
2345
2346 at = nat;
2347 }
2348
2349 ev_at (w) = at;
2350}
2351
1853/* make periodics pending */ 2352/* make periodics pending */
1854inline_size void 2353inline_size void
1855periodics_reify (EV_P) 2354periodics_reify (EV_P)
1856{ 2355{
1857 EV_FREQUENT_CHECK; 2356 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2375 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2376 downheap (periodics, periodiccnt, HEAP0);
1878 } 2377 }
1879 else if (w->interval) 2378 else if (w->interval)
1880 { 2379 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2380 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]); 2381 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2382 downheap (periodics, periodiccnt, HEAP0);
1897 } 2383 }
1898 else 2384 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2385 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2392 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2393 }
1908} 2394}
1909 2395
1910/* simply recalculate all periodics */ 2396/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2397/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2398static void noinline ecb_cold
1913periodics_reschedule (EV_P) 2399periodics_reschedule (EV_P)
1914{ 2400{
1915 int i; 2401 int i;
1916 2402
1917 /* adjust periodics after time jump */ 2403 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2406 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2407
1922 if (w->reschedule_cb) 2408 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2409 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2410 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2411 periodic_recalc (EV_A_ w);
1926 2412
1927 ANHE_at_cache (periodics [i]); 2413 ANHE_at_cache (periodics [i]);
1928 } 2414 }
1929 2415
1930 reheap (periodics, periodiccnt); 2416 reheap (periodics, periodiccnt);
1931} 2417}
1932#endif 2418#endif
1933 2419
1934/* adjust all timers by a given offset */ 2420/* adjust all timers by a given offset */
1935static void noinline 2421static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 2422timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 2423{
1938 int i; 2424 int i;
1939 2425
1940 for (i = 0; i < timercnt; ++i) 2426 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 2430 ANHE_at_cache (*he);
1945 } 2431 }
1946} 2432}
1947 2433
1948/* fetch new monotonic and realtime times from the kernel */ 2434/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2435/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2436inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2437time_update (EV_P_ ev_tstamp max_block)
1952{ 2438{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 2439#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 2440 if (expect_true (have_monotonic))
1957 { 2441 {
2442 int i;
1958 ev_tstamp odiff = rtmn_diff; 2443 ev_tstamp odiff = rtmn_diff;
1959 2444
1960 mn_now = get_clock (); 2445 mn_now = get_clock ();
1961 2446
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2447 /* 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 2463 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 2464 * in the unlikely event of having been preempted here.
1980 */ 2465 */
1981 for (i = 4; --i; ) 2466 for (i = 4; --i; )
1982 { 2467 {
2468 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 2469 rtmn_diff = ev_rt_now - mn_now;
1984 2470
2471 diff = odiff - rtmn_diff;
2472
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2473 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1986 return; /* all is well */ 2474 return; /* all is well */
1987 2475
1988 ev_rt_now = ev_time (); 2476 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 2477 mn_now = get_clock ();
1990 now_floor = mn_now; 2478 now_floor = mn_now;
… …
2012 2500
2013 mn_now = ev_rt_now; 2501 mn_now = ev_rt_now;
2014 } 2502 }
2015} 2503}
2016 2504
2017static int loop_done;
2018
2019void 2505void
2020ev_loop (EV_P_ int flags) 2506ev_run (EV_P_ int flags)
2021{ 2507{
2508#if EV_FEATURE_API
2509 ++loop_depth;
2510#endif
2511
2512 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2513
2022 loop_done = EVUNLOOP_CANCEL; 2514 loop_done = EVBREAK_CANCEL;
2023 2515
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2516 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 2517
2026 do 2518 do
2027 { 2519 {
2028#if EV_VERIFY >= 2 2520#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 2521 ev_verify (EV_A);
2030#endif 2522#endif
2031 2523
2032#ifndef _WIN32 2524#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 2525 if (expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 2526 if (expect_false (getpid () != curpid))
… …
2042 /* we might have forked, so queue fork handlers */ 2534 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 2535 if (expect_false (postfork))
2044 if (forkcnt) 2536 if (forkcnt)
2045 { 2537 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2538 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 2539 EV_INVOKE_PENDING;
2048 } 2540 }
2049#endif 2541#endif
2050 2542
2543#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 2544 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 2545 if (expect_false (preparecnt))
2053 { 2546 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2547 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 2548 EV_INVOKE_PENDING;
2056 } 2549 }
2550#endif
2551
2552 if (expect_false (loop_done))
2553 break;
2057 2554
2058 /* we might have forked, so reify kernel state if necessary */ 2555 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 2556 if (expect_false (postfork))
2060 loop_fork (EV_A); 2557 loop_fork (EV_A);
2061 2558
… …
2065 /* calculate blocking time */ 2562 /* calculate blocking time */
2066 { 2563 {
2067 ev_tstamp waittime = 0.; 2564 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 2565 ev_tstamp sleeptime = 0.;
2069 2566
2567 /* remember old timestamp for io_blocktime calculation */
2568 ev_tstamp prev_mn_now = mn_now;
2569
2570 /* update time to cancel out callback processing overhead */
2571 time_update (EV_A_ 1e100);
2572
2573 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1;
2575
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 2577 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 2578 waittime = MAX_BLOCKTIME;
2076 2579
2077 if (timercnt) 2580 if (timercnt)
2078 { 2581 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2582 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 2583 if (waittime > to) waittime = to;
2081 } 2584 }
2082 2585
2083#if EV_PERIODIC_ENABLE 2586#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 2587 if (periodiccnt)
2085 { 2588 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2589 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 2590 if (waittime > to) waittime = to;
2088 } 2591 }
2089#endif 2592#endif
2090 2593
2594 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 2595 if (expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 2596 waittime = timeout_blocktime;
2093 2597
2094 sleeptime = waittime - backend_fudge; 2598 /* at this point, we NEED to wait, so we have to ensure */
2599 /* to pass a minimum nonzero value to the backend */
2600 if (expect_false (waittime < backend_mintime))
2601 waittime = backend_mintime;
2095 2602
2603 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 2604 if (expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 2605 {
2606 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2607
2608 if (sleeptime > waittime - backend_mintime)
2609 sleeptime = waittime - backend_mintime;
2610
2611 if (expect_true (sleeptime > 0.))
2612 {
2101 ev_sleep (sleeptime); 2613 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 2614 waittime -= sleeptime;
2615 }
2103 } 2616 }
2104 } 2617 }
2105 2618
2619#if EV_FEATURE_API
2106 ++loop_count; 2620 ++loop_count;
2621#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 2623 backend_poll (EV_A_ waittime);
2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625
2626 pipe_write_wanted = 0;
2627
2628 if (pipe_write_skipped)
2629 {
2630 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 }
2633
2108 2634
2109 /* update ev_rt_now, do magic */ 2635 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 2636 time_update (EV_A_ waittime + sleeptime);
2111 } 2637 }
2112 2638
… …
2119#if EV_IDLE_ENABLE 2645#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 2646 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 2647 idle_reify (EV_A);
2122#endif 2648#endif
2123 2649
2650#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 2651 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 2652 if (expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2654#endif
2127 2655
2128 call_pending (EV_A); 2656 EV_INVOKE_PENDING;
2129 } 2657 }
2130 while (expect_true ( 2658 while (expect_true (
2131 activecnt 2659 activecnt
2132 && !loop_done 2660 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2661 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 2662 ));
2135 2663
2136 if (loop_done == EVUNLOOP_ONE) 2664 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 2665 loop_done = EVBREAK_CANCEL;
2666
2667#if EV_FEATURE_API
2668 --loop_depth;
2669#endif
2138} 2670}
2139 2671
2140void 2672void
2141ev_unloop (EV_P_ int how) 2673ev_break (EV_P_ int how)
2142{ 2674{
2143 loop_done = how; 2675 loop_done = how;
2144} 2676}
2145 2677
2146void 2678void
… …
2193inline_size void 2725inline_size void
2194wlist_del (WL *head, WL elem) 2726wlist_del (WL *head, WL elem)
2195{ 2727{
2196 while (*head) 2728 while (*head)
2197 { 2729 {
2198 if (*head == elem) 2730 if (expect_true (*head == elem))
2199 { 2731 {
2200 *head = elem->next; 2732 *head = elem->next;
2201 return; 2733 break;
2202 } 2734 }
2203 2735
2204 head = &(*head)->next; 2736 head = &(*head)->next;
2205 } 2737 }
2206} 2738}
… …
2234} 2766}
2235 2767
2236inline_size void 2768inline_size void
2237pri_adjust (EV_P_ W w) 2769pri_adjust (EV_P_ W w)
2238{ 2770{
2239 int pri = w->priority; 2771 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2772 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2773 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 2774 ev_set_priority (w, pri);
2243} 2775}
2244 2776
2245inline_speed void 2777inline_speed void
2246ev_start (EV_P_ W w, int active) 2778ev_start (EV_P_ W w, int active)
2247{ 2779{
… …
2266 2798
2267 if (expect_false (ev_is_active (w))) 2799 if (expect_false (ev_is_active (w)))
2268 return; 2800 return;
2269 2801
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2802 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)))); 2803 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 2804
2273 EV_FREQUENT_CHECK; 2805 EV_FREQUENT_CHECK;
2274 2806
2275 ev_start (EV_A_ (W)w, 1); 2807 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2277 wlist_add (&anfds[fd].head, (WL)w); 2809 wlist_add (&anfds[fd].head, (WL)w);
2278 2810
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2811 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 2812 w->events &= ~EV__IOFDSET;
2281 2813
2282 EV_FREQUENT_CHECK; 2814 EV_FREQUENT_CHECK;
2283} 2815}
2284 2816
… …
2294 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2295 2827
2296 wlist_del (&anfds[w->fd].head, (WL)w); 2828 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2298 2830
2299 fd_change (EV_A_ w->fd, 1); 2831 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 2832
2301 EV_FREQUENT_CHECK; 2833 EV_FREQUENT_CHECK;
2302} 2834}
2303 2835
2304void noinline 2836void noinline
… …
2346 timers [active] = timers [timercnt + HEAP0]; 2878 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 2879 adjustheap (timers, timercnt, active);
2348 } 2880 }
2349 } 2881 }
2350 2882
2351 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now; 2883 ev_at (w) -= mn_now;
2354 2884
2355 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2886
2887 EV_FREQUENT_CHECK;
2356} 2888}
2357 2889
2358void noinline 2890void noinline
2359ev_timer_again (EV_P_ ev_timer *w) 2891ev_timer_again (EV_P_ ev_timer *w)
2360{ 2892{
… …
2378 } 2910 }
2379 2911
2380 EV_FREQUENT_CHECK; 2912 EV_FREQUENT_CHECK;
2381} 2913}
2382 2914
2915ev_tstamp
2916ev_timer_remaining (EV_P_ ev_timer *w)
2917{
2918 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2919}
2920
2383#if EV_PERIODIC_ENABLE 2921#if EV_PERIODIC_ENABLE
2384void noinline 2922void noinline
2385ev_periodic_start (EV_P_ ev_periodic *w) 2923ev_periodic_start (EV_P_ ev_periodic *w)
2386{ 2924{
2387 if (expect_false (ev_is_active (w))) 2925 if (expect_false (ev_is_active (w)))
… …
2390 if (w->reschedule_cb) 2928 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2929 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 2930 else if (w->interval)
2393 { 2931 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2932 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 */ 2933 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 2934 }
2398 else 2935 else
2399 ev_at (w) = w->offset; 2936 ev_at (w) = w->offset;
2400 2937
2401 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
… …
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 2970 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 2971 adjustheap (periodics, periodiccnt, active);
2435 } 2972 }
2436 } 2973 }
2437 2974
2438 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2441} 2978}
2442 2979
2443void noinline 2980void noinline
2444ev_periodic_again (EV_P_ ev_periodic *w) 2981ev_periodic_again (EV_P_ ev_periodic *w)
2445{ 2982{
… …
2451 2988
2452#ifndef SA_RESTART 2989#ifndef SA_RESTART
2453# define SA_RESTART 0 2990# define SA_RESTART 0
2454#endif 2991#endif
2455 2992
2993#if EV_SIGNAL_ENABLE
2994
2456void noinline 2995void noinline
2457ev_signal_start (EV_P_ ev_signal *w) 2996ev_signal_start (EV_P_ ev_signal *w)
2458{ 2997{
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))) 2998 if (expect_false (ev_is_active (w)))
2463 return; 2999 return;
2464 3000
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3001 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466 3002
2467 evpipe_init (EV_A); 3003#if EV_MULTIPLICITY
3004 assert (("libev: a signal must not be attached to two different loops",
3005 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 3006
2469 EV_FREQUENT_CHECK; 3007 signals [w->signum - 1].loop = EV_A;
3008#endif
2470 3009
3010 EV_FREQUENT_CHECK;
3011
3012#if EV_USE_SIGNALFD
3013 if (sigfd == -2)
2471 { 3014 {
2472#ifndef _WIN32 3015 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 3016 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 3017 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 3018
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3019 if (sigfd >= 0)
3020 {
3021 fd_intern (sigfd); /* doing it twice will not hurt */
2479 3022
2480#ifndef _WIN32 3023 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 3024
2482#endif 3025 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3026 ev_set_priority (&sigfd_w, EV_MAXPRI);
3027 ev_io_start (EV_A_ &sigfd_w);
3028 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3029 }
2483 } 3030 }
3031
3032 if (sigfd >= 0)
3033 {
3034 /* TODO: check .head */
3035 sigaddset (&sigfd_set, w->signum);
3036 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3037
3038 signalfd (sigfd, &sigfd_set, 0);
3039 }
3040#endif
2484 3041
2485 ev_start (EV_A_ (W)w, 1); 3042 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 3043 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 3044
2488 if (!((WL)w)->next) 3045 if (!((WL)w)->next)
3046# if EV_USE_SIGNALFD
3047 if (sigfd < 0) /*TODO*/
3048# endif
2489 { 3049 {
2490#if _WIN32 3050# ifdef _WIN32
3051 evpipe_init (EV_A);
3052
2491 signal (w->signum, ev_sighandler); 3053 signal (w->signum, ev_sighandler);
2492#else 3054# else
2493 struct sigaction sa; 3055 struct sigaction sa;
3056
3057 evpipe_init (EV_A);
3058
2494 sa.sa_handler = ev_sighandler; 3059 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 3060 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3061 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 3062 sigaction (w->signum, &sa, 0);
3063
3064 if (origflags & EVFLAG_NOSIGMASK)
3065 {
3066 sigemptyset (&sa.sa_mask);
3067 sigaddset (&sa.sa_mask, w->signum);
3068 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3069 }
2498#endif 3070#endif
2499 } 3071 }
2500 3072
2501 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2502} 3074}
2503 3075
2504void noinline 3076void noinline
… …
2512 3084
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 3085 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 3086 ev_stop (EV_A_ (W)w);
2515 3087
2516 if (!signals [w->signum - 1].head) 3088 if (!signals [w->signum - 1].head)
3089 {
3090#if EV_MULTIPLICITY
3091 signals [w->signum - 1].loop = 0; /* unattach from signal */
3092#endif
3093#if EV_USE_SIGNALFD
3094 if (sigfd >= 0)
3095 {
3096 sigset_t ss;
3097
3098 sigemptyset (&ss);
3099 sigaddset (&ss, w->signum);
3100 sigdelset (&sigfd_set, w->signum);
3101
3102 signalfd (sigfd, &sigfd_set, 0);
3103 sigprocmask (SIG_UNBLOCK, &ss, 0);
3104 }
3105 else
3106#endif
2517 signal (w->signum, SIG_DFL); 3107 signal (w->signum, SIG_DFL);
3108 }
2518 3109
2519 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2520} 3111}
3112
3113#endif
3114
3115#if EV_CHILD_ENABLE
2521 3116
2522void 3117void
2523ev_child_start (EV_P_ ev_child *w) 3118ev_child_start (EV_P_ ev_child *w)
2524{ 3119{
2525#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
… …
2529 return; 3124 return;
2530 3125
2531 EV_FREQUENT_CHECK; 3126 EV_FREQUENT_CHECK;
2532 3127
2533 ev_start (EV_A_ (W)w, 1); 3128 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3129 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 3130
2536 EV_FREQUENT_CHECK; 3131 EV_FREQUENT_CHECK;
2537} 3132}
2538 3133
2539void 3134void
… …
2543 if (expect_false (!ev_is_active (w))) 3138 if (expect_false (!ev_is_active (w)))
2544 return; 3139 return;
2545 3140
2546 EV_FREQUENT_CHECK; 3141 EV_FREQUENT_CHECK;
2547 3142
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3143 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 3144 ev_stop (EV_A_ (W)w);
2550 3145
2551 EV_FREQUENT_CHECK; 3146 EV_FREQUENT_CHECK;
2552} 3147}
3148
3149#endif
2553 3150
2554#if EV_STAT_ENABLE 3151#if EV_STAT_ENABLE
2555 3152
2556# ifdef _WIN32 3153# ifdef _WIN32
2557# undef lstat 3154# undef lstat
… …
2563#define MIN_STAT_INTERVAL 0.1074891 3160#define MIN_STAT_INTERVAL 0.1074891
2564 3161
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3162static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 3163
2567#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192 3165
3166/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3167# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2569 3168
2570static void noinline 3169static void noinline
2571infy_add (EV_P_ ev_stat *w) 3170infy_add (EV_P_ ev_stat *w)
2572{ 3171{
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); 3172 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 3173
2575 if (w->wd < 0) 3174 if (w->wd >= 0)
3175 {
3176 struct statfs sfs;
3177
3178 /* now local changes will be tracked by inotify, but remote changes won't */
3179 /* unless the filesystem is known to be local, we therefore still poll */
3180 /* also do poll on <2.6.25, but with normal frequency */
3181
3182 if (!fs_2625)
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 else if (!statfs (w->path, &sfs)
3185 && (sfs.f_type == 0x1373 /* devfs */
3186 || sfs.f_type == 0xEF53 /* ext2/3 */
3187 || sfs.f_type == 0x3153464a /* jfs */
3188 || sfs.f_type == 0x52654973 /* reiser3 */
3189 || sfs.f_type == 0x01021994 /* tempfs */
3190 || sfs.f_type == 0x58465342 /* xfs */))
3191 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192 else
3193 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 3194 }
3195 else
3196 {
3197 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3198 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 3199
2580 /* monitor some parent directory for speedup hints */ 3200 /* 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, */ 3201 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 3202 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3203 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 3204 {
2585 char path [4096]; 3205 char path [4096];
… …
2595 if (!pend || pend == path) 3215 if (!pend || pend == path)
2596 break; 3216 break;
2597 3217
2598 *pend = 0; 3218 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 3219 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 3220 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3221 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 3222 }
2603 } 3223 }
2604 3224
2605 if (w->wd >= 0) 3225 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3226 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 3227
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 3228 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 3229 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); 3230 ev_timer_again (EV_A_ &w->timer);
2625 } 3231 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 3232}
2627 3233
2628static void noinline 3234static void noinline
2629infy_del (EV_P_ ev_stat *w) 3235infy_del (EV_P_ ev_stat *w)
2630{ 3236{
… …
2633 3239
2634 if (wd < 0) 3240 if (wd < 0)
2635 return; 3241 return;
2636 3242
2637 w->wd = -2; 3243 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3244 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 3245 wlist_del (&fs_hash [slot].head, (WL)w);
2640 3246
2641 /* remove this watcher, if others are watching it, they will rearm */ 3247 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 3248 inotify_rm_watch (fs_fd, wd);
2643} 3249}
… …
2645static void noinline 3251static void noinline
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 3253{
2648 if (slot < 0) 3254 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 3255 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3256 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 3257 infy_wd (EV_A_ slot, wd, ev);
2652 else 3258 else
2653 { 3259 {
2654 WL w_; 3260 WL w_;
2655 3261
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3262 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 3263 {
2658 ev_stat *w = (ev_stat *)w_; 3264 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 3265 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 3266
2661 if (w->wd == wd || wd == -1) 3267 if (w->wd == wd || wd == -1)
2662 { 3268 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 3270 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3271 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 3272 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 3273 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 3274 }
2669 3275
2670 stat_timer_cb (EV_A_ &w->timer, 0); 3276 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 3281
2676static void 3282static void
2677infy_cb (EV_P_ ev_io *w, int revents) 3283infy_cb (EV_P_ ev_io *w, int revents)
2678{ 3284{
2679 char buf [EV_INOTIFY_BUFSIZE]; 3285 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 3286 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 3287 int len = read (fs_fd, buf, sizeof (buf));
2683 3288
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3289 for (ofs = 0; ofs < len; )
3290 {
3291 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3292 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3293 ofs += sizeof (struct inotify_event) + ev->len;
3294 }
2686} 3295}
2687 3296
2688inline_size void 3297inline_size void ecb_cold
2689check_2625 (EV_P) 3298ev_check_2625 (EV_P)
2690{ 3299{
2691 /* kernels < 2.6.25 are borked 3300 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3301 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 3302 */
2694 struct utsname buf; 3303 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 3304 return;
2699 3305
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; 3306 fs_2625 = 1;
3307}
3308
3309inline_size int
3310infy_newfd (void)
3311{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0)
3315 return fd;
3316#endif
3317 return inotify_init ();
2709} 3318}
2710 3319
2711inline_size void 3320inline_size void
2712infy_init (EV_P) 3321infy_init (EV_P)
2713{ 3322{
2714 if (fs_fd != -2) 3323 if (fs_fd != -2)
2715 return; 3324 return;
2716 3325
2717 fs_fd = -1; 3326 fs_fd = -1;
2718 3327
2719 check_2625 (EV_A); 3328 ev_check_2625 (EV_A);
2720 3329
2721 fs_fd = inotify_init (); 3330 fs_fd = infy_newfd ();
2722 3331
2723 if (fs_fd >= 0) 3332 if (fs_fd >= 0)
2724 { 3333 {
3334 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3335 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 3336 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 3337 ev_io_start (EV_A_ &fs_w);
3338 ev_unref (EV_A);
2728 } 3339 }
2729} 3340}
2730 3341
2731inline_size void 3342inline_size void
2732infy_fork (EV_P) 3343infy_fork (EV_P)
… …
2734 int slot; 3345 int slot;
2735 3346
2736 if (fs_fd < 0) 3347 if (fs_fd < 0)
2737 return; 3348 return;
2738 3349
3350 ev_ref (EV_A);
3351 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 3352 close (fs_fd);
2740 fs_fd = inotify_init (); 3353 fs_fd = infy_newfd ();
2741 3354
3355 if (fs_fd >= 0)
3356 {
3357 fd_intern (fs_fd);
3358 ev_io_set (&fs_w, fs_fd, EV_READ);
3359 ev_io_start (EV_A_ &fs_w);
3360 ev_unref (EV_A);
3361 }
3362
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3363 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 3364 {
2744 WL w_ = fs_hash [slot].head; 3365 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 3366 fs_hash [slot].head = 0;
2746 3367
2747 while (w_) 3368 while (w_)
… …
2752 w->wd = -1; 3373 w->wd = -1;
2753 3374
2754 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 3376 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 3377 else
3378 {
3379 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3380 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 3381 ev_timer_again (EV_A_ &w->timer);
3382 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3383 }
2758 } 3384 }
2759 } 3385 }
2760} 3386}
2761 3387
2762#endif 3388#endif
… …
2779static void noinline 3405static void noinline
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3406stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 3407{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3408 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 3409
2784 /* we copy this here each the time so that */ 3410 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); 3411 ev_stat_stat (EV_A_ w);
2788 3412
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3413 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 3414 if (
2791 w->prev.st_dev != w->attr.st_dev 3415 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 3416 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 3417 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 3418 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 3419 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 3420 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 3421 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 3422 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 3423 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 3424 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 3425 || prev.st_ctime != w->attr.st_ctime
2802 ) { 3426 ) {
3427 /* we only update w->prev on actual differences */
3428 /* in case we test more often than invoke the callback, */
3429 /* to ensure that prev is always different to attr */
3430 w->prev = prev;
3431
2803 #if EV_USE_INOTIFY 3432 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 3433 if (fs_fd >= 0)
2805 { 3434 {
2806 infy_del (EV_A_ w); 3435 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 3436 infy_add (EV_A_ w);
… …
2832 3461
2833 if (fs_fd >= 0) 3462 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 3463 infy_add (EV_A_ w);
2835 else 3464 else
2836#endif 3465#endif
3466 {
2837 ev_timer_again (EV_A_ &w->timer); 3467 ev_timer_again (EV_A_ &w->timer);
3468 ev_unref (EV_A);
3469 }
2838 3470
2839 ev_start (EV_A_ (W)w, 1); 3471 ev_start (EV_A_ (W)w, 1);
2840 3472
2841 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2842} 3474}
… …
2851 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
2852 3484
2853#if EV_USE_INOTIFY 3485#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 3486 infy_del (EV_A_ w);
2855#endif 3487#endif
3488
3489 if (ev_is_active (&w->timer))
3490 {
3491 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 3492 ev_timer_stop (EV_A_ &w->timer);
3493 }
2857 3494
2858 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
2859 3496
2860 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2861} 3498}
… …
2906 3543
2907 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2908} 3545}
2909#endif 3546#endif
2910 3547
3548#if EV_PREPARE_ENABLE
2911void 3549void
2912ev_prepare_start (EV_P_ ev_prepare *w) 3550ev_prepare_start (EV_P_ ev_prepare *w)
2913{ 3551{
2914 if (expect_false (ev_is_active (w))) 3552 if (expect_false (ev_is_active (w)))
2915 return; 3553 return;
… …
2941 3579
2942 ev_stop (EV_A_ (W)w); 3580 ev_stop (EV_A_ (W)w);
2943 3581
2944 EV_FREQUENT_CHECK; 3582 EV_FREQUENT_CHECK;
2945} 3583}
3584#endif
2946 3585
3586#if EV_CHECK_ENABLE
2947void 3587void
2948ev_check_start (EV_P_ ev_check *w) 3588ev_check_start (EV_P_ ev_check *w)
2949{ 3589{
2950 if (expect_false (ev_is_active (w))) 3590 if (expect_false (ev_is_active (w)))
2951 return; 3591 return;
… …
2977 3617
2978 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
2979 3619
2980 EV_FREQUENT_CHECK; 3620 EV_FREQUENT_CHECK;
2981} 3621}
3622#endif
2982 3623
2983#if EV_EMBED_ENABLE 3624#if EV_EMBED_ENABLE
2984void noinline 3625void noinline
2985ev_embed_sweep (EV_P_ ev_embed *w) 3626ev_embed_sweep (EV_P_ ev_embed *w)
2986{ 3627{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 3628 ev_run (w->other, EVRUN_NOWAIT);
2988} 3629}
2989 3630
2990static void 3631static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 3632embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 3633{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3634 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 3635
2995 if (ev_cb (w)) 3636 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3637 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 3638 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 3639 ev_run (w->other, EVRUN_NOWAIT);
2999} 3640}
3000 3641
3001static void 3642static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3643embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 3644{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3645 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 3646
3006 { 3647 {
3007 struct ev_loop *loop = w->other; 3648 EV_P = w->other;
3008 3649
3009 while (fdchangecnt) 3650 while (fdchangecnt)
3010 { 3651 {
3011 fd_reify (EV_A); 3652 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3653 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 3654 }
3014 } 3655 }
3015} 3656}
3016 3657
3017static void 3658static void
… …
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3661 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 3662
3022 ev_embed_stop (EV_A_ w); 3663 ev_embed_stop (EV_A_ w);
3023 3664
3024 { 3665 {
3025 struct ev_loop *loop = w->other; 3666 EV_P = w->other;
3026 3667
3027 ev_loop_fork (EV_A); 3668 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3669 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 3670 }
3030 3671
3031 ev_embed_start (EV_A_ w); 3672 ev_embed_start (EV_A_ w);
3032} 3673}
3033 3674
… …
3044{ 3685{
3045 if (expect_false (ev_is_active (w))) 3686 if (expect_false (ev_is_active (w)))
3046 return; 3687 return;
3047 3688
3048 { 3689 {
3049 struct ev_loop *loop = w->other; 3690 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3691 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); 3692 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 3693 }
3053 3694
3054 EV_FREQUENT_CHECK; 3695 EV_FREQUENT_CHECK;
… …
3081 3722
3082 ev_io_stop (EV_A_ &w->io); 3723 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 3724 ev_prepare_stop (EV_A_ &w->prepare);
3084 ev_fork_stop (EV_A_ &w->fork); 3725 ev_fork_stop (EV_A_ &w->fork);
3085 3726
3727 ev_stop (EV_A_ (W)w);
3728
3086 EV_FREQUENT_CHECK; 3729 EV_FREQUENT_CHECK;
3087} 3730}
3088#endif 3731#endif
3089 3732
3090#if EV_FORK_ENABLE 3733#if EV_FORK_ENABLE
… …
3123 3766
3124 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
3125} 3768}
3126#endif 3769#endif
3127 3770
3771#if EV_CLEANUP_ENABLE
3772void
3773ev_cleanup_start (EV_P_ ev_cleanup *w)
3774{
3775 if (expect_false (ev_is_active (w)))
3776 return;
3777
3778 EV_FREQUENT_CHECK;
3779
3780 ev_start (EV_A_ (W)w, ++cleanupcnt);
3781 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3782 cleanups [cleanupcnt - 1] = w;
3783
3784 /* cleanup watchers should never keep a refcount on the loop */
3785 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK;
3787}
3788
3789void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w)
3791{
3792 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w)))
3794 return;
3795
3796 EV_FREQUENT_CHECK;
3797 ev_ref (EV_A);
3798
3799 {
3800 int active = ev_active (w);
3801
3802 cleanups [active - 1] = cleanups [--cleanupcnt];
3803 ev_active (cleanups [active - 1]) = active;
3804 }
3805
3806 ev_stop (EV_A_ (W)w);
3807
3808 EV_FREQUENT_CHECK;
3809}
3810#endif
3811
3128#if EV_ASYNC_ENABLE 3812#if EV_ASYNC_ENABLE
3129void 3813void
3130ev_async_start (EV_P_ ev_async *w) 3814ev_async_start (EV_P_ ev_async *w)
3131{ 3815{
3132 if (expect_false (ev_is_active (w))) 3816 if (expect_false (ev_is_active (w)))
3133 return; 3817 return;
3134 3818
3819 w->sent = 0;
3820
3135 evpipe_init (EV_A); 3821 evpipe_init (EV_A);
3136 3822
3137 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
3138 3824
3139 ev_start (EV_A_ (W)w, ++asynccnt); 3825 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3166 3852
3167void 3853void
3168ev_async_send (EV_P_ ev_async *w) 3854ev_async_send (EV_P_ ev_async *w)
3169{ 3855{
3170 w->sent = 1; 3856 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 3857 evpipe_write (EV_A_ &async_pending);
3172} 3858}
3173#endif 3859#endif
3174 3860
3175/*****************************************************************************/ 3861/*****************************************************************************/
3176 3862
… …
3216{ 3902{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3903 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218 3904
3219 if (expect_false (!once)) 3905 if (expect_false (!once))
3220 { 3906 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3907 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3222 return; 3908 return;
3223 } 3909 }
3224 3910
3225 once->cb = cb; 3911 once->cb = cb;
3226 once->arg = arg; 3912 once->arg = arg;
… …
3241} 3927}
3242 3928
3243/*****************************************************************************/ 3929/*****************************************************************************/
3244 3930
3245#if EV_WALK_ENABLE 3931#if EV_WALK_ENABLE
3246void 3932void ecb_cold
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3933ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3248{ 3934{
3249 int i, j; 3935 int i, j;
3250 ev_watcher_list *wl, *wn; 3936 ev_watcher_list *wl, *wn;
3251 3937
… …
3313 if (types & EV_ASYNC) 3999 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 4000 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 4001 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 4002#endif
3317 4003
4004#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 4005 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 4006 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 4007# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 4008 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 4009# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 4010 cb (EV_A_ EV_PREPARE, prepares [i]);
4011#endif
3324 4012
4013#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 4014 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 4015 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 4016 cb (EV_A_ EV_CHECK, checks [i]);
4017#endif
3328 4018
4019#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 4020 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 4021 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 4022 for (wl = signals [i].head; wl; )
3332 { 4023 {
3333 wn = wl->next; 4024 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 4025 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 4026 wl = wn;
3336 } 4027 }
4028#endif
3337 4029
4030#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 4031 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 4032 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 4033 for (wl = childs [i]; wl; )
3341 { 4034 {
3342 wn = wl->next; 4035 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 4036 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 4037 wl = wn;
3345 } 4038 }
4039#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 4040/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4041/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 4042}
3349#endif 4043#endif
3350 4044
3351#if EV_MULTIPLICITY 4045#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 4046 #include "ev_wrap.h"
3353#endif 4047#endif
3354 4048
3355#ifdef __cplusplus 4049EV_CPP(})
3356}
3357#endif
3358 4050

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