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Comparing libev/ev.c (file contents):
Revision 1.277 by root, Sun Dec 14 21:58:08 2008 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 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 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
67# endif 71# endif
68# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
69# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
70# endif 74# endif
71# else 75# else
72# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
73# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
74# endif 78# endif
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
197#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
198# define EV_USE_REALTIME 0 263# 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;
… …
397typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
398 558
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
562#if EV_USE_REALTIME
563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
564/* giving it a reasonably high chance of working on typical architectures */
565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
566#endif
567
402#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
403/* 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 */
405static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
570#endif
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)
406#endif 580#endif
407 581
408#ifdef _WIN32 582#ifdef _WIN32
409# include "ev_win32.c" 583# include "ev_win32.c"
410#endif 584#endif
411 585
412/*****************************************************************************/ 586/*****************************************************************************/
413 587
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
414static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
415 687
416void 688void ecb_cold
417ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
418{ 690{
419 syserr_cb = cb; 691 syserr_cb = cb;
420} 692}
421 693
422static void noinline 694static void noinline ecb_cold
423ev_syserr (const char *msg) 695ev_syserr (const char *msg)
424{ 696{
425 if (!msg) 697 if (!msg)
426 msg = "(libev) system error"; 698 msg = "(libev) system error";
427 699
428 if (syserr_cb) 700 if (syserr_cb)
429 syserr_cb (msg); 701 syserr_cb (msg);
430 else 702 else
431 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
432 perror (msg); 710 perror (msg);
711#endif
433 abort (); 712 abort ();
434 } 713 }
435} 714}
436 715
437static void * 716static void *
438ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
439{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
440 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
441 * 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
442 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
443 */ 725 */
444 726
445 if (size) 727 if (size)
446 return realloc (ptr, size); 728 return realloc (ptr, size);
447 729
448 free (ptr); 730 free (ptr);
449 return 0; 731 return 0;
732#endif
450} 733}
451 734
452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
453 736
454void 737void ecb_cold
455ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
456{ 739{
457 alloc = cb; 740 alloc = cb;
458} 741}
459 742
… …
462{ 745{
463 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
464 747
465 if (!ptr && size) 748 if (!ptr && size)
466 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
468 abort (); 755 abort ();
469 } 756 }
470 757
471 return ptr; 758 return ptr;
472} 759}
… …
474#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
475#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
476 763
477/*****************************************************************************/ 764/*****************************************************************************/
478 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
479typedef struct 770typedef struct
480{ 771{
481 WL head; 772 WL head;
482 unsigned char events; 773 unsigned char events; /* the events watched for */
483 unsigned char reify; 774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
484 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 */
485 unsigned char unused; 776 unsigned char unused;
486#if EV_USE_EPOLL 777#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif 779#endif
489#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
490 SOCKET handle; 781 SOCKET handle;
491#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
492} ANFD; 786} ANFD;
493 787
788/* stores the pending event set for a given watcher */
494typedef struct 789typedef struct
495{ 790{
496 W w; 791 W w;
497 int events; 792 int events; /* the pending event set for the given watcher */
498} ANPENDING; 793} ANPENDING;
499 794
500#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
502typedef struct 797typedef struct
… …
505} ANFS; 800} ANFS;
506#endif 801#endif
507 802
508/* Heap Entry */ 803/* Heap Entry */
509#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
510 typedef struct { 806 typedef struct {
511 ev_tstamp at; 807 ev_tstamp at;
512 WT w; 808 WT w;
513 } ANHE; 809 } ANHE;
514 810
515 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 813 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else 814#else
815 /* a heap element */
519 typedef WT ANHE; 816 typedef WT ANHE;
520 817
521 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
547 844
548 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
549 846
550#endif 847#endif
551 848
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
552/*****************************************************************************/ 861/*****************************************************************************/
553 862
863#ifndef EV_HAVE_EV_TIME
554ev_tstamp 864ev_tstamp
555ev_time (void) 865ev_time (void)
556{ 866{
557#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
558 struct timespec ts; 870 struct timespec ts;
559 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
560 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
561#else 873 }
874#endif
875
562 struct timeval tv; 876 struct timeval tv;
563 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
564 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
565#endif
566} 879}
880#endif
567 881
568ev_tstamp inline_size 882inline_size ev_tstamp
569get_clock (void) 883get_clock (void)
570{ 884{
571#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
572 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
573 { 887 {
… …
594 if (delay > 0.) 908 if (delay > 0.)
595 { 909 {
596#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
597 struct timespec ts; 911 struct timespec ts;
598 912
599 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
603#elif defined(_WIN32) 915#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
605#else 917#else
606 struct timeval tv; 918 struct timeval tv;
607 919
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* 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 */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
614 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
615#endif 925#endif
616 } 926 }
617} 927}
618 928
619/*****************************************************************************/ 929/*****************************************************************************/
620 930
621#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 */
622 932
623int inline_size 933/* find a suitable new size for the given array, */
934/* hopefully by rounding to a nice-to-malloc size */
935inline_size int
624array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
625{ 937{
626 int ncur = cur + 1; 938 int ncur = cur + 1;
627 939
628 do 940 do
… …
639 } 951 }
640 952
641 return ncur; 953 return ncur;
642} 954}
643 955
644static noinline void * 956static void * noinline ecb_cold
645array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
646{ 958{
647 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
648 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
649} 961}
… …
669 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670 } 982 }
671#endif 983#endif
672 984
673#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
674 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
675 987
676/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
677 995
678void noinline 996void noinline
679ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
680{ 998{
681 W w_ = (W)w; 999 W w_ = (W)w;
… …
690 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
691 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
692 } 1010 }
693} 1011}
694 1012
695void inline_speed 1013inline_speed void
1014feed_reverse (EV_P_ W w)
1015{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1017 rfeeds [rfeedcnt++] = w;
1018}
1019
1020inline_size void
1021feed_reverse_done (EV_P_ int revents)
1022{
1023 do
1024 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1025 while (rfeedcnt);
1026}
1027
1028inline_speed void
696queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
697{ 1030{
698 int i; 1031 int i;
699 1032
700 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
701 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
702} 1035}
703 1036
704/*****************************************************************************/ 1037/*****************************************************************************/
705 1038
706void inline_speed 1039inline_speed void
707fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
708{ 1041{
709 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
710 ev_io *w; 1043 ev_io *w;
711 1044
712 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)
… …
716 if (ev) 1049 if (ev)
717 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
718 } 1051 }
719} 1052}
720 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
721void 1065void
722ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
723{ 1067{
724 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
725 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
726} 1070}
727 1071
728void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
729fd_reify (EV_P) 1075fd_reify (EV_P)
730{ 1076{
731 int i; 1077 int i;
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
732 1103
733 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
734 { 1105 {
735 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
736 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
737 ev_io *w; 1108 ev_io *w;
738 1109
739 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
740 1112
741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
742 events |= (unsigned char)w->events;
743 1114
744#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
745 if (events)
746 { 1116 {
747 unsigned long arg; 1117 anfd->events = 0;
748 #ifdef EV_FD_TO_WIN32_HANDLE 1118
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
750 #else 1120 anfd->events |= (unsigned char)w->events;
751 anfd->handle = _get_osfhandle (fd); 1121
752 #endif 1122 if (o_events != anfd->events)
753 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
754 } 1124 }
755#endif
756 1125
757 { 1126 if (o_reify & EV__IOFDSET)
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
761 anfd->reify = 0;
762 anfd->events = events;
763
764 if (o_events != events || o_reify & EV_IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
766 }
767 } 1128 }
768 1129
769 fdchangecnt = 0; 1130 fdchangecnt = 0;
770} 1131}
771 1132
772void inline_size 1133/* something about the given fd changed */
1134inline_size void
773fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
774{ 1136{
775 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
776 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
777 1139
… …
781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
783 } 1145 }
784} 1146}
785 1147
786void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
787fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
788{ 1151{
789 ev_io *w; 1152 ev_io *w;
790 1153
791 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
793 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
794 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);
795 } 1158 }
796} 1159}
797 1160
798int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
799fd_valid (int fd) 1163fd_valid (int fd)
800{ 1164{
801#ifdef _WIN32 1165#ifdef _WIN32
802 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
803#else 1167#else
804 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
805#endif 1169#endif
806} 1170}
807 1171
808/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
809static void noinline 1173static void noinline ecb_cold
810fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
811{ 1175{
812 int fd; 1176 int fd;
813 1177
814 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
816 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
817 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
818} 1182}
819 1183
820/* 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 */
821static void noinline 1185static void noinline ecb_cold
822fd_enomem (EV_P) 1186fd_enomem (EV_P)
823{ 1187{
824 int fd; 1188 int fd;
825 1189
826 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
827 if (anfds [fd].events) 1191 if (anfds [fd].events)
828 { 1192 {
829 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
830 return; 1194 break;
831 } 1195 }
832} 1196}
833 1197
834/* 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 */
835static void noinline 1199static void noinline
… …
840 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
841 if (anfds [fd].events) 1205 if (anfds [fd].events)
842 { 1206 {
843 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
844 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
845 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846 } 1210 }
847} 1211}
848 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
849/*****************************************************************************/ 1227/*****************************************************************************/
850 1228
851/* 1229/*
852 * 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
853 * 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
854 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
855 */ 1233 */
856 1234
857/* 1235/*
… …
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
869 1247
870/* away from the root */ 1248/* away from the root */
871void inline_speed 1249inline_speed void
872downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
873{ 1251{
874 ANHE he = heap [k]; 1252 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
876 1254
… …
916#define HEAP0 1 1294#define HEAP0 1
917#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
919 1297
920/* away from the root */ 1298/* away from the root */
921void inline_speed 1299inline_speed void
922downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
923{ 1301{
924 ANHE he = heap [k]; 1302 ANHE he = heap [k];
925 1303
926 for (;;) 1304 for (;;)
927 { 1305 {
928 int c = k << 1; 1306 int c = k << 1;
929 1307
930 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
931 break; 1309 break;
932 1310
933 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])
934 ? 1 : 0; 1312 ? 1 : 0;
935 1313
… …
946 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
947} 1325}
948#endif 1326#endif
949 1327
950/* towards the root */ 1328/* towards the root */
951void inline_speed 1329inline_speed void
952upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
953{ 1331{
954 ANHE he = heap [k]; 1332 ANHE he = heap [k];
955 1333
956 for (;;) 1334 for (;;)
… …
967 1345
968 heap [k] = he; 1346 heap [k] = he;
969 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
970} 1348}
971 1349
972void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
973adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
974{ 1353{
975 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)]))
976 upheap (heap, k); 1355 upheap (heap, k);
977 else 1356 else
978 downheap (heap, N, k); 1357 downheap (heap, N, k);
979} 1358}
980 1359
981/* rebuild the heap: this function is used only once and executed rarely */ 1360/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size 1361inline_size void
983reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
984{ 1363{
985 int i; 1364 int i;
986 1365
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1366 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
990 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
991} 1370}
992 1371
993/*****************************************************************************/ 1372/*****************************************************************************/
994 1373
1374/* associate signal watchers to a signal signal */
995typedef struct 1375typedef struct
996{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
997 WL head; 1381 WL head;
998 EV_ATOMIC_T gotsig;
999} ANSIG; 1382} ANSIG;
1000 1383
1001static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
1002static int signalmax;
1003
1004static EV_ATOMIC_T gotsig;
1005 1385
1006/*****************************************************************************/ 1386/*****************************************************************************/
1007 1387
1008void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1009fd_intern (int fd)
1010{
1011#ifdef _WIN32
1012 unsigned long arg = 1;
1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1014#else
1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
1016 fcntl (fd, F_SETFL, O_NONBLOCK);
1017#endif
1018}
1019 1389
1020static void noinline 1390static void noinline ecb_cold
1021evpipe_init (EV_P) 1391evpipe_init (EV_P)
1022{ 1392{
1023 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1024 { 1394 {
1025#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1026 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1027 { 1401 {
1028 evpipe [0] = -1; 1402 evpipe [0] = -1;
1029 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1030 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1031 } 1405 }
1032 else 1406 else
1033#endif 1407# endif
1034 { 1408 {
1035 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1037 1411
1038 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1039 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041 } 1415 }
1042 1416
1043 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1044 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 } 1419 }
1046} 1420}
1047 1421
1048void inline_size 1422inline_speed void
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{ 1424{
1051 if (!*flag) 1425 if (!*flag)
1052 { 1426 {
1053 int old_errno = errno; /* save errno because write might clobber it */
1054
1055 *flag = 1; 1427 *flag = 1;
1056 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1457 }
1458 }
1459}
1460
1461/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */
1463static void
1464pipecb (EV_P_ ev_io *iow, int revents)
1465{
1466 int i;
1467
1468 if (revents & EV_READ)
1469 {
1057#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1471 if (evfd >= 0)
1059 { 1472 {
1060 uint64_t counter = 1; 1473 uint64_t counter;
1061 write (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1062 } 1475 }
1063 else 1476 else
1064#endif 1477#endif
1065 write (evpipe [1], &old_errno, 1); 1478 {
1066
1067 errno = old_errno;
1068 }
1069}
1070
1071static void
1072pipecb (EV_P_ ev_io *iow, int revents)
1073{
1074#if EV_USE_EVENTFD
1075 if (evfd >= 0)
1076 {
1077 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t));
1079 }
1080 else
1081#endif
1082 {
1083 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1084 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1483 }
1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1488 if (sig_pending)
1085 } 1489 {
1490 sig_pending = 0;
1086 1491
1087 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1088 { 1493 if (expect_false (signals [i].pending))
1089 int signum;
1090 gotsig = 0;
1091
1092 for (signum = signalmax; signum--; )
1093 if (signals [signum].gotsig)
1094 ev_feed_signal_event (EV_A_ signum + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1095 } 1495 }
1496#endif
1096 1497
1097#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1098 if (gotasync) 1499 if (async_pending)
1099 { 1500 {
1100 int i; 1501 async_pending = 0;
1101 gotasync = 0;
1102 1502
1103 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1105 { 1505 {
1106 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1110#endif 1510#endif
1111} 1511}
1112 1512
1113/*****************************************************************************/ 1513/*****************************************************************************/
1114 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 evpipe_init (EV_A);
1526
1527 signals [signum - 1].pending = 1;
1528 evpipe_write (EV_A_ &sig_pending);
1529}
1530
1115static void 1531static void
1116ev_sighandler (int signum) 1532ev_sighandler (int signum)
1117{ 1533{
1118#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct;
1120#endif
1121
1122#if _WIN32 1534#ifdef _WIN32
1123 signal (signum, ev_sighandler); 1535 signal (signum, ev_sighandler);
1124#endif 1536#endif
1125 1537
1126 signals [signum - 1].gotsig = 1; 1538 ev_feed_signal (signum);
1127 evpipe_write (EV_A_ &gotsig);
1128} 1539}
1129 1540
1130void noinline 1541void noinline
1131ev_feed_signal_event (EV_P_ int signum) 1542ev_feed_signal_event (EV_P_ int signum)
1132{ 1543{
1133 WL w; 1544 WL w;
1134 1545
1546 if (expect_false (signum <= 0 || signum > EV_NSIG))
1547 return;
1548
1549 --signum;
1550
1135#if EV_MULTIPLICITY 1551#if EV_MULTIPLICITY
1136 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1552 /* it is permissible to try to feed a signal to the wrong loop */
1137#endif 1553 /* or, likely more useful, feeding a signal nobody is waiting for */
1138 1554
1139 --signum; 1555 if (expect_false (signals [signum].loop != EV_A))
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return; 1556 return;
1557#endif
1143 1558
1144 signals [signum].gotsig = 0; 1559 signals [signum].pending = 0;
1145 1560
1146 for (w = signals [signum].head; w; w = w->next) 1561 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1562 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148} 1563}
1149 1564
1565#if EV_USE_SIGNALFD
1566static void
1567sigfdcb (EV_P_ ev_io *iow, int revents)
1568{
1569 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1570
1571 for (;;)
1572 {
1573 ssize_t res = read (sigfd, si, sizeof (si));
1574
1575 /* not ISO-C, as res might be -1, but works with SuS */
1576 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1577 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1578
1579 if (res < (ssize_t)sizeof (si))
1580 break;
1581 }
1582}
1583#endif
1584
1585#endif
1586
1150/*****************************************************************************/ 1587/*****************************************************************************/
1151 1588
1589#if EV_CHILD_ENABLE
1152static WL childs [EV_PID_HASHSIZE]; 1590static WL childs [EV_PID_HASHSIZE];
1153
1154#ifndef _WIN32
1155 1591
1156static ev_signal childev; 1592static ev_signal childev;
1157 1593
1158#ifndef WIFCONTINUED 1594#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0 1595# define WIFCONTINUED(status) 0
1160#endif 1596#endif
1161 1597
1162void inline_speed 1598/* handle a single child status event */
1599inline_speed void
1163child_reap (EV_P_ int chain, int pid, int status) 1600child_reap (EV_P_ int chain, int pid, int status)
1164{ 1601{
1165 ev_child *w; 1602 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1603 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167 1604
1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1605 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 { 1606 {
1170 if ((w->pid == pid || !w->pid) 1607 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1))) 1608 && (!traced || (w->flags & 1)))
1172 { 1609 {
1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1610 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1180 1617
1181#ifndef WCONTINUED 1618#ifndef WCONTINUED
1182# define WCONTINUED 0 1619# define WCONTINUED 0
1183#endif 1620#endif
1184 1621
1622/* called on sigchld etc., calls waitpid */
1185static void 1623static void
1186childcb (EV_P_ ev_signal *sw, int revents) 1624childcb (EV_P_ ev_signal *sw, int revents)
1187{ 1625{
1188 int pid, status; 1626 int pid, status;
1189 1627
… …
1197 /* make sure we are called again until all children have been reaped */ 1635 /* make sure we are called again until all children have been reaped */
1198 /* we need to do it this way so that the callback gets called before we continue */ 1636 /* we need to do it this way so that the callback gets called before we continue */
1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1637 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1200 1638
1201 child_reap (EV_A_ pid, pid, status); 1639 child_reap (EV_A_ pid, pid, status);
1202 if (EV_PID_HASHSIZE > 1) 1640 if ((EV_PID_HASHSIZE) > 1)
1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1641 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1204} 1642}
1205 1643
1206#endif 1644#endif
1207 1645
1208/*****************************************************************************/ 1646/*****************************************************************************/
1209 1647
1648#if EV_USE_IOCP
1649# include "ev_iocp.c"
1650#endif
1210#if EV_USE_PORT 1651#if EV_USE_PORT
1211# include "ev_port.c" 1652# include "ev_port.c"
1212#endif 1653#endif
1213#if EV_USE_KQUEUE 1654#if EV_USE_KQUEUE
1214# include "ev_kqueue.c" 1655# include "ev_kqueue.c"
… …
1221#endif 1662#endif
1222#if EV_USE_SELECT 1663#if EV_USE_SELECT
1223# include "ev_select.c" 1664# include "ev_select.c"
1224#endif 1665#endif
1225 1666
1226int 1667int ecb_cold
1227ev_version_major (void) 1668ev_version_major (void)
1228{ 1669{
1229 return EV_VERSION_MAJOR; 1670 return EV_VERSION_MAJOR;
1230} 1671}
1231 1672
1232int 1673int ecb_cold
1233ev_version_minor (void) 1674ev_version_minor (void)
1234{ 1675{
1235 return EV_VERSION_MINOR; 1676 return EV_VERSION_MINOR;
1236} 1677}
1237 1678
1238/* return true if we are running with elevated privileges and should ignore env variables */ 1679/* return true if we are running with elevated privileges and should ignore env variables */
1239int inline_size 1680int inline_size ecb_cold
1240enable_secure (void) 1681enable_secure (void)
1241{ 1682{
1242#ifdef _WIN32 1683#ifdef _WIN32
1243 return 0; 1684 return 0;
1244#else 1685#else
1245 return getuid () != geteuid () 1686 return getuid () != geteuid ()
1246 || getgid () != getegid (); 1687 || getgid () != getegid ();
1247#endif 1688#endif
1248} 1689}
1249 1690
1250unsigned int 1691unsigned int ecb_cold
1251ev_supported_backends (void) 1692ev_supported_backends (void)
1252{ 1693{
1253 unsigned int flags = 0; 1694 unsigned int flags = 0;
1254 1695
1255 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1696 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1259 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1700 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1260 1701
1261 return flags; 1702 return flags;
1262} 1703}
1263 1704
1264unsigned int 1705unsigned int ecb_cold
1265ev_recommended_backends (void) 1706ev_recommended_backends (void)
1266{ 1707{
1267 unsigned int flags = ev_supported_backends (); 1708 unsigned int flags = ev_supported_backends ();
1268 1709
1269#ifndef __NetBSD__ 1710#ifndef __NetBSD__
1270 /* kqueue is borked on everything but netbsd apparently */ 1711 /* kqueue is borked on everything but netbsd apparently */
1271 /* it usually doesn't work correctly on anything but sockets and pipes */ 1712 /* it usually doesn't work correctly on anything but sockets and pipes */
1272 flags &= ~EVBACKEND_KQUEUE; 1713 flags &= ~EVBACKEND_KQUEUE;
1273#endif 1714#endif
1274#ifdef __APPLE__ 1715#ifdef __APPLE__
1275 // flags &= ~EVBACKEND_KQUEUE & ~EVBACKEND_POLL; for documentation 1716 /* only select works correctly on that "unix-certified" platform */
1276 flags &= ~EVBACKEND_SELECT; 1717 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1718 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1719#endif
1720#ifdef __FreeBSD__
1721 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1277#endif 1722#endif
1278 1723
1279 return flags; 1724 return flags;
1280} 1725}
1281 1726
1282unsigned int 1727unsigned int ecb_cold
1283ev_embeddable_backends (void) 1728ev_embeddable_backends (void)
1284{ 1729{
1285 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1730 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1286 1731
1287 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1732 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1288 /* please fix it and tell me how to detect the fix */ 1733 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1289 flags &= ~EVBACKEND_EPOLL; 1734 flags &= ~EVBACKEND_EPOLL;
1290 1735
1291 return flags; 1736 return flags;
1292} 1737}
1293 1738
1294unsigned int 1739unsigned int
1295ev_backend (EV_P) 1740ev_backend (EV_P)
1296{ 1741{
1297 return backend; 1742 return backend;
1298} 1743}
1299 1744
1745#if EV_FEATURE_API
1300unsigned int 1746unsigned int
1301ev_loop_count (EV_P) 1747ev_iteration (EV_P)
1302{ 1748{
1303 return loop_count; 1749 return loop_count;
1750}
1751
1752unsigned int
1753ev_depth (EV_P)
1754{
1755 return loop_depth;
1304} 1756}
1305 1757
1306void 1758void
1307ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1759ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308{ 1760{
… …
1313ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1765ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314{ 1766{
1315 timeout_blocktime = interval; 1767 timeout_blocktime = interval;
1316} 1768}
1317 1769
1770void
1771ev_set_userdata (EV_P_ void *data)
1772{
1773 userdata = data;
1774}
1775
1776void *
1777ev_userdata (EV_P)
1778{
1779 return userdata;
1780}
1781
1782void
1783ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1784{
1785 invoke_cb = invoke_pending_cb;
1786}
1787
1788void
1789ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1790{
1791 release_cb = release;
1792 acquire_cb = acquire;
1793}
1794#endif
1795
1796/* initialise a loop structure, must be zero-initialised */
1318static void noinline 1797static void noinline ecb_cold
1319loop_init (EV_P_ unsigned int flags) 1798loop_init (EV_P_ unsigned int flags)
1320{ 1799{
1321 if (!backend) 1800 if (!backend)
1322 { 1801 {
1802 origflags = flags;
1803
1804#if EV_USE_REALTIME
1805 if (!have_realtime)
1806 {
1807 struct timespec ts;
1808
1809 if (!clock_gettime (CLOCK_REALTIME, &ts))
1810 have_realtime = 1;
1811 }
1812#endif
1813
1323#if EV_USE_MONOTONIC 1814#if EV_USE_MONOTONIC
1815 if (!have_monotonic)
1324 { 1816 {
1325 struct timespec ts; 1817 struct timespec ts;
1818
1326 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1819 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327 have_monotonic = 1; 1820 have_monotonic = 1;
1328 } 1821 }
1329#endif
1330
1331 ev_rt_now = ev_time ();
1332 mn_now = get_clock ();
1333 now_floor = mn_now;
1334 rtmn_diff = ev_rt_now - mn_now;
1335
1336 io_blocktime = 0.;
1337 timeout_blocktime = 0.;
1338 backend = 0;
1339 backend_fd = -1;
1340 gotasync = 0;
1341#if EV_USE_INOTIFY
1342 fs_fd = -2;
1343#endif 1822#endif
1344 1823
1345 /* pid check not overridable via env */ 1824 /* pid check not overridable via env */
1346#ifndef _WIN32 1825#ifndef _WIN32
1347 if (flags & EVFLAG_FORKCHECK) 1826 if (flags & EVFLAG_FORKCHECK)
… …
1351 if (!(flags & EVFLAG_NOENV) 1830 if (!(flags & EVFLAG_NOENV)
1352 && !enable_secure () 1831 && !enable_secure ()
1353 && getenv ("LIBEV_FLAGS")) 1832 && getenv ("LIBEV_FLAGS"))
1354 flags = atoi (getenv ("LIBEV_FLAGS")); 1833 flags = atoi (getenv ("LIBEV_FLAGS"));
1355 1834
1356 if (!(flags & 0x0000ffffU)) 1835 ev_rt_now = ev_time ();
1836 mn_now = get_clock ();
1837 now_floor = mn_now;
1838 rtmn_diff = ev_rt_now - mn_now;
1839#if EV_FEATURE_API
1840 invoke_cb = ev_invoke_pending;
1841#endif
1842
1843 io_blocktime = 0.;
1844 timeout_blocktime = 0.;
1845 backend = 0;
1846 backend_fd = -1;
1847 sig_pending = 0;
1848#if EV_ASYNC_ENABLE
1849 async_pending = 0;
1850#endif
1851 pipe_write_skipped = 0;
1852 pipe_write_wanted = 0;
1853#if EV_USE_INOTIFY
1854 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1855#endif
1856#if EV_USE_SIGNALFD
1857 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1858#endif
1859
1860 if (!(flags & EVBACKEND_MASK))
1357 flags |= ev_recommended_backends (); 1861 flags |= ev_recommended_backends ();
1358 1862
1863#if EV_USE_IOCP
1864 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1865#endif
1359#if EV_USE_PORT 1866#if EV_USE_PORT
1360 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1867 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1361#endif 1868#endif
1362#if EV_USE_KQUEUE 1869#if EV_USE_KQUEUE
1363 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1870 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1370#endif 1877#endif
1371#if EV_USE_SELECT 1878#if EV_USE_SELECT
1372 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1879 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373#endif 1880#endif
1374 1881
1882 ev_prepare_init (&pending_w, pendingcb);
1883
1884#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1375 ev_init (&pipeev, pipecb); 1885 ev_init (&pipe_w, pipecb);
1376 ev_set_priority (&pipeev, EV_MAXPRI); 1886 ev_set_priority (&pipe_w, EV_MAXPRI);
1887#endif
1377 } 1888 }
1378} 1889}
1379 1890
1380static void noinline 1891/* free up a loop structure */
1892void ecb_cold
1381loop_destroy (EV_P) 1893ev_loop_destroy (EV_P)
1382{ 1894{
1383 int i; 1895 int i;
1384 1896
1897#if EV_MULTIPLICITY
1898 /* mimic free (0) */
1899 if (!EV_A)
1900 return;
1901#endif
1902
1903#if EV_CLEANUP_ENABLE
1904 /* queue cleanup watchers (and execute them) */
1905 if (expect_false (cleanupcnt))
1906 {
1907 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1908 EV_INVOKE_PENDING;
1909 }
1910#endif
1911
1912#if EV_CHILD_ENABLE
1913 if (ev_is_active (&childev))
1914 {
1915 ev_ref (EV_A); /* child watcher */
1916 ev_signal_stop (EV_A_ &childev);
1917 }
1918#endif
1919
1385 if (ev_is_active (&pipeev)) 1920 if (ev_is_active (&pipe_w))
1386 { 1921 {
1387 ev_ref (EV_A); /* signal watcher */ 1922 /*ev_ref (EV_A);*/
1388 ev_io_stop (EV_A_ &pipeev); 1923 /*ev_io_stop (EV_A_ &pipe_w);*/
1389 1924
1390#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1391 if (evfd >= 0) 1926 if (evfd >= 0)
1392 close (evfd); 1927 close (evfd);
1393#endif 1928#endif
1394 1929
1395 if (evpipe [0] >= 0) 1930 if (evpipe [0] >= 0)
1396 { 1931 {
1397 close (evpipe [0]); 1932 EV_WIN32_CLOSE_FD (evpipe [0]);
1398 close (evpipe [1]); 1933 EV_WIN32_CLOSE_FD (evpipe [1]);
1399 } 1934 }
1400 } 1935 }
1936
1937#if EV_USE_SIGNALFD
1938 if (ev_is_active (&sigfd_w))
1939 close (sigfd);
1940#endif
1401 1941
1402#if EV_USE_INOTIFY 1942#if EV_USE_INOTIFY
1403 if (fs_fd >= 0) 1943 if (fs_fd >= 0)
1404 close (fs_fd); 1944 close (fs_fd);
1405#endif 1945#endif
1406 1946
1407 if (backend_fd >= 0) 1947 if (backend_fd >= 0)
1408 close (backend_fd); 1948 close (backend_fd);
1409 1949
1950#if EV_USE_IOCP
1951 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1952#endif
1410#if EV_USE_PORT 1953#if EV_USE_PORT
1411 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1954 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1412#endif 1955#endif
1413#if EV_USE_KQUEUE 1956#if EV_USE_KQUEUE
1414 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1957 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1429#if EV_IDLE_ENABLE 1972#if EV_IDLE_ENABLE
1430 array_free (idle, [i]); 1973 array_free (idle, [i]);
1431#endif 1974#endif
1432 } 1975 }
1433 1976
1434 ev_free (anfds); anfdmax = 0; 1977 ev_free (anfds); anfds = 0; anfdmax = 0;
1435 1978
1436 /* have to use the microsoft-never-gets-it-right macro */ 1979 /* have to use the microsoft-never-gets-it-right macro */
1980 array_free (rfeed, EMPTY);
1437 array_free (fdchange, EMPTY); 1981 array_free (fdchange, EMPTY);
1438 array_free (timer, EMPTY); 1982 array_free (timer, EMPTY);
1439#if EV_PERIODIC_ENABLE 1983#if EV_PERIODIC_ENABLE
1440 array_free (periodic, EMPTY); 1984 array_free (periodic, EMPTY);
1441#endif 1985#endif
1442#if EV_FORK_ENABLE 1986#if EV_FORK_ENABLE
1443 array_free (fork, EMPTY); 1987 array_free (fork, EMPTY);
1444#endif 1988#endif
1989#if EV_CLEANUP_ENABLE
1990 array_free (cleanup, EMPTY);
1991#endif
1445 array_free (prepare, EMPTY); 1992 array_free (prepare, EMPTY);
1446 array_free (check, EMPTY); 1993 array_free (check, EMPTY);
1447#if EV_ASYNC_ENABLE 1994#if EV_ASYNC_ENABLE
1448 array_free (async, EMPTY); 1995 array_free (async, EMPTY);
1449#endif 1996#endif
1450 1997
1451 backend = 0; 1998 backend = 0;
1999
2000#if EV_MULTIPLICITY
2001 if (ev_is_default_loop (EV_A))
2002#endif
2003 ev_default_loop_ptr = 0;
2004#if EV_MULTIPLICITY
2005 else
2006 ev_free (EV_A);
2007#endif
1452} 2008}
1453 2009
1454#if EV_USE_INOTIFY 2010#if EV_USE_INOTIFY
1455void inline_size infy_fork (EV_P); 2011inline_size void infy_fork (EV_P);
1456#endif 2012#endif
1457 2013
1458void inline_size 2014inline_size void
1459loop_fork (EV_P) 2015loop_fork (EV_P)
1460{ 2016{
1461#if EV_USE_PORT 2017#if EV_USE_PORT
1462 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2018 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463#endif 2019#endif
… …
1469#endif 2025#endif
1470#if EV_USE_INOTIFY 2026#if EV_USE_INOTIFY
1471 infy_fork (EV_A); 2027 infy_fork (EV_A);
1472#endif 2028#endif
1473 2029
1474 if (ev_is_active (&pipeev)) 2030 if (ev_is_active (&pipe_w))
1475 { 2031 {
1476 /* this "locks" the handlers against writing to the pipe */ 2032 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1477 /* while we modify the fd vars */
1478 gotsig = 1;
1479#if EV_ASYNC_ENABLE
1480 gotasync = 1;
1481#endif
1482 2033
1483 ev_ref (EV_A); 2034 ev_ref (EV_A);
1484 ev_io_stop (EV_A_ &pipeev); 2035 ev_io_stop (EV_A_ &pipe_w);
1485 2036
1486#if EV_USE_EVENTFD 2037#if EV_USE_EVENTFD
1487 if (evfd >= 0) 2038 if (evfd >= 0)
1488 close (evfd); 2039 close (evfd);
1489#endif 2040#endif
1490 2041
1491 if (evpipe [0] >= 0) 2042 if (evpipe [0] >= 0)
1492 { 2043 {
1493 close (evpipe [0]); 2044 EV_WIN32_CLOSE_FD (evpipe [0]);
1494 close (evpipe [1]); 2045 EV_WIN32_CLOSE_FD (evpipe [1]);
1495 } 2046 }
1496 2047
2048#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1497 evpipe_init (EV_A); 2049 evpipe_init (EV_A);
1498 /* now iterate over everything, in case we missed something */ 2050 /* now iterate over everything, in case we missed something */
1499 pipecb (EV_A_ &pipeev, EV_READ); 2051 pipecb (EV_A_ &pipe_w, EV_READ);
2052#endif
1500 } 2053 }
1501 2054
1502 postfork = 0; 2055 postfork = 0;
1503} 2056}
1504 2057
1505#if EV_MULTIPLICITY 2058#if EV_MULTIPLICITY
1506 2059
1507struct ev_loop * 2060struct ev_loop * ecb_cold
1508ev_loop_new (unsigned int flags) 2061ev_loop_new (unsigned int flags)
1509{ 2062{
1510 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2063 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1511 2064
1512 memset (loop, 0, sizeof (struct ev_loop)); 2065 memset (EV_A, 0, sizeof (struct ev_loop));
1513
1514 loop_init (EV_A_ flags); 2066 loop_init (EV_A_ flags);
1515 2067
1516 if (ev_backend (EV_A)) 2068 if (ev_backend (EV_A))
1517 return loop; 2069 return EV_A;
1518 2070
2071 ev_free (EV_A);
1519 return 0; 2072 return 0;
1520} 2073}
1521 2074
1522void 2075#endif /* multiplicity */
1523ev_loop_destroy (EV_P)
1524{
1525 loop_destroy (EV_A);
1526 ev_free (loop);
1527}
1528
1529void
1530ev_loop_fork (EV_P)
1531{
1532 postfork = 1; /* must be in line with ev_default_fork */
1533}
1534 2076
1535#if EV_VERIFY 2077#if EV_VERIFY
1536static void noinline 2078static void noinline ecb_cold
1537verify_watcher (EV_P_ W w) 2079verify_watcher (EV_P_ W w)
1538{ 2080{
1539 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2081 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540 2082
1541 if (w->pending) 2083 if (w->pending)
1542 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2084 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543} 2085}
1544 2086
1545static void noinline 2087static void noinline ecb_cold
1546verify_heap (EV_P_ ANHE *heap, int N) 2088verify_heap (EV_P_ ANHE *heap, int N)
1547{ 2089{
1548 int i; 2090 int i;
1549 2091
1550 for (i = HEAP0; i < N + HEAP0; ++i) 2092 for (i = HEAP0; i < N + HEAP0; ++i)
1551 { 2093 {
1552 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2094 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1553 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2095 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1554 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2096 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555 2097
1556 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2098 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557 } 2099 }
1558} 2100}
1559 2101
1560static void noinline 2102static void noinline ecb_cold
1561array_verify (EV_P_ W *ws, int cnt) 2103array_verify (EV_P_ W *ws, int cnt)
1562{ 2104{
1563 while (cnt--) 2105 while (cnt--)
1564 { 2106 {
1565 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2107 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566 verify_watcher (EV_A_ ws [cnt]); 2108 verify_watcher (EV_A_ ws [cnt]);
1567 } 2109 }
1568} 2110}
1569#endif 2111#endif
1570 2112
1571void 2113#if EV_FEATURE_API
2114void ecb_cold
1572ev_loop_verify (EV_P) 2115ev_verify (EV_P)
1573{ 2116{
1574#if EV_VERIFY 2117#if EV_VERIFY
1575 int i; 2118 int i;
1576 WL w; 2119 WL w;
1577 2120
1578 assert (activecnt >= -1); 2121 assert (activecnt >= -1);
1579 2122
1580 assert (fdchangemax >= fdchangecnt); 2123 assert (fdchangemax >= fdchangecnt);
1581 for (i = 0; i < fdchangecnt; ++i) 2124 for (i = 0; i < fdchangecnt; ++i)
1582 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2125 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583 2126
1584 assert (anfdmax >= 0); 2127 assert (anfdmax >= 0);
1585 for (i = 0; i < anfdmax; ++i) 2128 for (i = 0; i < anfdmax; ++i)
1586 for (w = anfds [i].head; w; w = w->next) 2129 for (w = anfds [i].head; w; w = w->next)
1587 { 2130 {
1588 verify_watcher (EV_A_ (W)w); 2131 verify_watcher (EV_A_ (W)w);
1589 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2132 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1590 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2133 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591 } 2134 }
1592 2135
1593 assert (timermax >= timercnt); 2136 assert (timermax >= timercnt);
1594 verify_heap (EV_A_ timers, timercnt); 2137 verify_heap (EV_A_ timers, timercnt);
1595 2138
… …
1611#if EV_FORK_ENABLE 2154#if EV_FORK_ENABLE
1612 assert (forkmax >= forkcnt); 2155 assert (forkmax >= forkcnt);
1613 array_verify (EV_A_ (W *)forks, forkcnt); 2156 array_verify (EV_A_ (W *)forks, forkcnt);
1614#endif 2157#endif
1615 2158
2159#if EV_CLEANUP_ENABLE
2160 assert (cleanupmax >= cleanupcnt);
2161 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2162#endif
2163
1616#if EV_ASYNC_ENABLE 2164#if EV_ASYNC_ENABLE
1617 assert (asyncmax >= asynccnt); 2165 assert (asyncmax >= asynccnt);
1618 array_verify (EV_A_ (W *)asyncs, asynccnt); 2166 array_verify (EV_A_ (W *)asyncs, asynccnt);
1619#endif 2167#endif
1620 2168
2169#if EV_PREPARE_ENABLE
1621 assert (preparemax >= preparecnt); 2170 assert (preparemax >= preparecnt);
1622 array_verify (EV_A_ (W *)prepares, preparecnt); 2171 array_verify (EV_A_ (W *)prepares, preparecnt);
2172#endif
1623 2173
2174#if EV_CHECK_ENABLE
1624 assert (checkmax >= checkcnt); 2175 assert (checkmax >= checkcnt);
1625 array_verify (EV_A_ (W *)checks, checkcnt); 2176 array_verify (EV_A_ (W *)checks, checkcnt);
2177#endif
1626 2178
1627# if 0 2179# if 0
2180#if EV_CHILD_ENABLE
1628 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2181 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1629 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2182 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2183#endif
1630# endif 2184# endif
1631#endif 2185#endif
1632} 2186}
1633 2187#endif
1634#endif /* multiplicity */
1635 2188
1636#if EV_MULTIPLICITY 2189#if EV_MULTIPLICITY
1637struct ev_loop * 2190struct ev_loop * ecb_cold
1638ev_default_loop_init (unsigned int flags)
1639#else 2191#else
1640int 2192int
2193#endif
1641ev_default_loop (unsigned int flags) 2194ev_default_loop (unsigned int flags)
1642#endif
1643{ 2195{
1644 if (!ev_default_loop_ptr) 2196 if (!ev_default_loop_ptr)
1645 { 2197 {
1646#if EV_MULTIPLICITY 2198#if EV_MULTIPLICITY
1647 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2199 EV_P = ev_default_loop_ptr = &default_loop_struct;
1648#else 2200#else
1649 ev_default_loop_ptr = 1; 2201 ev_default_loop_ptr = 1;
1650#endif 2202#endif
1651 2203
1652 loop_init (EV_A_ flags); 2204 loop_init (EV_A_ flags);
1653 2205
1654 if (ev_backend (EV_A)) 2206 if (ev_backend (EV_A))
1655 { 2207 {
1656#ifndef _WIN32 2208#if EV_CHILD_ENABLE
1657 ev_signal_init (&childev, childcb, SIGCHLD); 2209 ev_signal_init (&childev, childcb, SIGCHLD);
1658 ev_set_priority (&childev, EV_MAXPRI); 2210 ev_set_priority (&childev, EV_MAXPRI);
1659 ev_signal_start (EV_A_ &childev); 2211 ev_signal_start (EV_A_ &childev);
1660 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2212 ev_unref (EV_A); /* child watcher should not keep loop alive */
1661#endif 2213#endif
… …
1666 2218
1667 return ev_default_loop_ptr; 2219 return ev_default_loop_ptr;
1668} 2220}
1669 2221
1670void 2222void
1671ev_default_destroy (void) 2223ev_loop_fork (EV_P)
1672{ 2224{
1673#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr;
1675#endif
1676
1677 ev_default_loop_ptr = 0;
1678
1679#ifndef _WIN32
1680 ev_ref (EV_A); /* child watcher */
1681 ev_signal_stop (EV_A_ &childev);
1682#endif
1683
1684 loop_destroy (EV_A);
1685}
1686
1687void
1688ev_default_fork (void)
1689{
1690#if EV_MULTIPLICITY
1691 struct ev_loop *loop = ev_default_loop_ptr;
1692#endif
1693
1694 postfork = 1; /* must be in line with ev_loop_fork */ 2225 postfork = 1; /* must be in line with ev_default_fork */
1695} 2226}
1696 2227
1697/*****************************************************************************/ 2228/*****************************************************************************/
1698 2229
1699void 2230void
1700ev_invoke (EV_P_ void *w, int revents) 2231ev_invoke (EV_P_ void *w, int revents)
1701{ 2232{
1702 EV_CB_INVOKE ((W)w, revents); 2233 EV_CB_INVOKE ((W)w, revents);
1703} 2234}
1704 2235
1705void inline_speed 2236unsigned int
1706call_pending (EV_P) 2237ev_pending_count (EV_P)
2238{
2239 int pri;
2240 unsigned int count = 0;
2241
2242 for (pri = NUMPRI; pri--; )
2243 count += pendingcnt [pri];
2244
2245 return count;
2246}
2247
2248void noinline
2249ev_invoke_pending (EV_P)
1707{ 2250{
1708 int pri; 2251 int pri;
1709 2252
1710 for (pri = NUMPRI; pri--; ) 2253 for (pri = NUMPRI; pri--; )
1711 while (pendingcnt [pri]) 2254 while (pendingcnt [pri])
1712 { 2255 {
1713 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2256 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714 2257
1715 if (expect_true (p->w))
1716 {
1717 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1718
1719 p->w->pending = 0; 2258 p->w->pending = 0;
1720 EV_CB_INVOKE (p->w, p->events); 2259 EV_CB_INVOKE (p->w, p->events);
1721 EV_FREQUENT_CHECK; 2260 EV_FREQUENT_CHECK;
1722 }
1723 } 2261 }
1724} 2262}
1725 2263
1726#if EV_IDLE_ENABLE 2264#if EV_IDLE_ENABLE
1727void inline_size 2265/* make idle watchers pending. this handles the "call-idle */
2266/* only when higher priorities are idle" logic */
2267inline_size void
1728idle_reify (EV_P) 2268idle_reify (EV_P)
1729{ 2269{
1730 if (expect_false (idleall)) 2270 if (expect_false (idleall))
1731 { 2271 {
1732 int pri; 2272 int pri;
… …
1744 } 2284 }
1745 } 2285 }
1746} 2286}
1747#endif 2287#endif
1748 2288
1749void inline_size 2289/* make timers pending */
2290inline_size void
1750timers_reify (EV_P) 2291timers_reify (EV_P)
1751{ 2292{
1752 EV_FREQUENT_CHECK; 2293 EV_FREQUENT_CHECK;
1753 2294
1754 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2295 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755 { 2296 {
1756 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2297 do
1757
1758 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760 /* first reschedule or stop timer */
1761 if (w->repeat)
1762 { 2298 {
2299 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2300
2301 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2302
2303 /* first reschedule or stop timer */
2304 if (w->repeat)
2305 {
1763 ev_at (w) += w->repeat; 2306 ev_at (w) += w->repeat;
1764 if (ev_at (w) < mn_now) 2307 if (ev_at (w) < mn_now)
1765 ev_at (w) = mn_now; 2308 ev_at (w) = mn_now;
1766 2309
1767 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2310 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768 2311
1769 ANHE_at_cache (timers [HEAP0]); 2312 ANHE_at_cache (timers [HEAP0]);
1770 downheap (timers, timercnt, HEAP0); 2313 downheap (timers, timercnt, HEAP0);
2314 }
2315 else
2316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2317
2318 EV_FREQUENT_CHECK;
2319 feed_reverse (EV_A_ (W)w);
1771 } 2320 }
1772 else 2321 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774 2322
1775 EV_FREQUENT_CHECK; 2323 feed_reverse_done (EV_A_ EV_TIMER);
1776 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1777 } 2324 }
1778} 2325}
1779 2326
1780#if EV_PERIODIC_ENABLE 2327#if EV_PERIODIC_ENABLE
1781void inline_size 2328
2329static void noinline
2330periodic_recalc (EV_P_ ev_periodic *w)
2331{
2332 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2333 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2334
2335 /* the above almost always errs on the low side */
2336 while (at <= ev_rt_now)
2337 {
2338 ev_tstamp nat = at + w->interval;
2339
2340 /* when resolution fails us, we use ev_rt_now */
2341 if (expect_false (nat == at))
2342 {
2343 at = ev_rt_now;
2344 break;
2345 }
2346
2347 at = nat;
2348 }
2349
2350 ev_at (w) = at;
2351}
2352
2353/* make periodics pending */
2354inline_size void
1782periodics_reify (EV_P) 2355periodics_reify (EV_P)
1783{ 2356{
1784 EV_FREQUENT_CHECK; 2357 EV_FREQUENT_CHECK;
1785 2358
1786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2359 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787 { 2360 {
1788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2361 int feed_count = 0;
1789 2362
1790 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2363 do
1791
1792 /* first reschedule or stop timer */
1793 if (w->reschedule_cb)
1794 { 2364 {
2365 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2366
2367 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2368
2369 /* first reschedule or stop timer */
2370 if (w->reschedule_cb)
2371 {
1795 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2372 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796 2373
1797 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2374 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798 2375
1799 ANHE_at_cache (periodics [HEAP0]); 2376 ANHE_at_cache (periodics [HEAP0]);
1800 downheap (periodics, periodiccnt, HEAP0); 2377 downheap (periodics, periodiccnt, HEAP0);
2378 }
2379 else if (w->interval)
2380 {
2381 periodic_recalc (EV_A_ w);
2382 ANHE_at_cache (periodics [HEAP0]);
2383 downheap (periodics, periodiccnt, HEAP0);
2384 }
2385 else
2386 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2387
2388 EV_FREQUENT_CHECK;
2389 feed_reverse (EV_A_ (W)w);
1801 } 2390 }
1802 else if (w->interval) 2391 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1803 {
1804 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805 /* if next trigger time is not sufficiently in the future, put it there */
1806 /* this might happen because of floating point inexactness */
1807 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808 {
1809 ev_at (w) += w->interval;
1810 2392
1811 /* if interval is unreasonably low we might still have a time in the past */
1812 /* so correct this. this will make the periodic very inexact, but the user */
1813 /* has effectively asked to get triggered more often than possible */
1814 if (ev_at (w) < ev_rt_now)
1815 ev_at (w) = ev_rt_now;
1816 }
1817
1818 ANHE_at_cache (periodics [HEAP0]);
1819 downheap (periodics, periodiccnt, HEAP0);
1820 }
1821 else
1822 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824 EV_FREQUENT_CHECK;
1825 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2393 feed_reverse_done (EV_A_ EV_PERIODIC);
1826 } 2394 }
1827} 2395}
1828 2396
2397/* simply recalculate all periodics */
2398/* TODO: maybe ensure that at least one event happens when jumping forward? */
1829static void noinline 2399static void noinline ecb_cold
1830periodics_reschedule (EV_P) 2400periodics_reschedule (EV_P)
1831{ 2401{
1832 int i; 2402 int i;
1833 2403
1834 /* adjust periodics after time jump */ 2404 /* adjust periodics after time jump */
… …
1837 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2407 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1838 2408
1839 if (w->reschedule_cb) 2409 if (w->reschedule_cb)
1840 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2410 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1841 else if (w->interval) 2411 else if (w->interval)
1842 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2412 periodic_recalc (EV_A_ w);
1843 2413
1844 ANHE_at_cache (periodics [i]); 2414 ANHE_at_cache (periodics [i]);
1845 } 2415 }
1846 2416
1847 reheap (periodics, periodiccnt); 2417 reheap (periodics, periodiccnt);
1848} 2418}
1849#endif 2419#endif
1850 2420
1851void inline_speed 2421/* adjust all timers by a given offset */
2422static void noinline ecb_cold
2423timers_reschedule (EV_P_ ev_tstamp adjust)
2424{
2425 int i;
2426
2427 for (i = 0; i < timercnt; ++i)
2428 {
2429 ANHE *he = timers + i + HEAP0;
2430 ANHE_w (*he)->at += adjust;
2431 ANHE_at_cache (*he);
2432 }
2433}
2434
2435/* fetch new monotonic and realtime times from the kernel */
2436/* also detect if there was a timejump, and act accordingly */
2437inline_speed void
1852time_update (EV_P_ ev_tstamp max_block) 2438time_update (EV_P_ ev_tstamp max_block)
1853{ 2439{
1854 int i;
1855
1856#if EV_USE_MONOTONIC 2440#if EV_USE_MONOTONIC
1857 if (expect_true (have_monotonic)) 2441 if (expect_true (have_monotonic))
1858 { 2442 {
2443 int i;
1859 ev_tstamp odiff = rtmn_diff; 2444 ev_tstamp odiff = rtmn_diff;
1860 2445
1861 mn_now = get_clock (); 2446 mn_now = get_clock ();
1862 2447
1863 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2448 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1879 * doesn't hurt either as we only do this on time-jumps or 2464 * doesn't hurt either as we only do this on time-jumps or
1880 * in the unlikely event of having been preempted here. 2465 * in the unlikely event of having been preempted here.
1881 */ 2466 */
1882 for (i = 4; --i; ) 2467 for (i = 4; --i; )
1883 { 2468 {
2469 ev_tstamp diff;
1884 rtmn_diff = ev_rt_now - mn_now; 2470 rtmn_diff = ev_rt_now - mn_now;
1885 2471
2472 diff = odiff - rtmn_diff;
2473
1886 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2474 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1887 return; /* all is well */ 2475 return; /* all is well */
1888 2476
1889 ev_rt_now = ev_time (); 2477 ev_rt_now = ev_time ();
1890 mn_now = get_clock (); 2478 mn_now = get_clock ();
1891 now_floor = mn_now; 2479 now_floor = mn_now;
1892 } 2480 }
1893 2481
2482 /* no timer adjustment, as the monotonic clock doesn't jump */
2483 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894# if EV_PERIODIC_ENABLE 2484# if EV_PERIODIC_ENABLE
1895 periodics_reschedule (EV_A); 2485 periodics_reschedule (EV_A);
1896# endif 2486# endif
1897 /* no timer adjustment, as the monotonic clock doesn't jump */
1898 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899 } 2487 }
1900 else 2488 else
1901#endif 2489#endif
1902 { 2490 {
1903 ev_rt_now = ev_time (); 2491 ev_rt_now = ev_time ();
1904 2492
1905 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2493 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1906 { 2494 {
2495 /* adjust timers. this is easy, as the offset is the same for all of them */
2496 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1907#if EV_PERIODIC_ENABLE 2497#if EV_PERIODIC_ENABLE
1908 periodics_reschedule (EV_A); 2498 periodics_reschedule (EV_A);
1909#endif 2499#endif
1910 /* adjust timers. this is easy, as the offset is the same for all of them */
1911 for (i = 0; i < timercnt; ++i)
1912 {
1913 ANHE *he = timers + i + HEAP0;
1914 ANHE_w (*he)->at += ev_rt_now - mn_now;
1915 ANHE_at_cache (*he);
1916 }
1917 } 2500 }
1918 2501
1919 mn_now = ev_rt_now; 2502 mn_now = ev_rt_now;
1920 } 2503 }
1921} 2504}
1922 2505
1923void 2506void
1924ev_ref (EV_P)
1925{
1926 ++activecnt;
1927}
1928
1929void
1930ev_unref (EV_P)
1931{
1932 --activecnt;
1933}
1934
1935void
1936ev_now_update (EV_P)
1937{
1938 time_update (EV_A_ 1e100);
1939}
1940
1941static int loop_done;
1942
1943void
1944ev_loop (EV_P_ int flags) 2507ev_run (EV_P_ int flags)
1945{ 2508{
2509#if EV_FEATURE_API
2510 ++loop_depth;
2511#endif
2512
2513 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2514
1946 loop_done = EVUNLOOP_CANCEL; 2515 loop_done = EVBREAK_CANCEL;
1947 2516
1948 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2517 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1949 2518
1950 do 2519 do
1951 { 2520 {
1952#if EV_VERIFY >= 2 2521#if EV_VERIFY >= 2
1953 ev_loop_verify (EV_A); 2522 ev_verify (EV_A);
1954#endif 2523#endif
1955 2524
1956#ifndef _WIN32 2525#ifndef _WIN32
1957 if (expect_false (curpid)) /* penalise the forking check even more */ 2526 if (expect_false (curpid)) /* penalise the forking check even more */
1958 if (expect_false (getpid () != curpid)) 2527 if (expect_false (getpid () != curpid))
… …
1966 /* we might have forked, so queue fork handlers */ 2535 /* we might have forked, so queue fork handlers */
1967 if (expect_false (postfork)) 2536 if (expect_false (postfork))
1968 if (forkcnt) 2537 if (forkcnt)
1969 { 2538 {
1970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2539 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971 call_pending (EV_A); 2540 EV_INVOKE_PENDING;
1972 } 2541 }
1973#endif 2542#endif
1974 2543
2544#if EV_PREPARE_ENABLE
1975 /* queue prepare watchers (and execute them) */ 2545 /* queue prepare watchers (and execute them) */
1976 if (expect_false (preparecnt)) 2546 if (expect_false (preparecnt))
1977 { 2547 {
1978 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2548 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979 call_pending (EV_A); 2549 EV_INVOKE_PENDING;
1980 } 2550 }
2551#endif
1981 2552
1982 if (expect_false (!activecnt)) 2553 if (expect_false (loop_done))
1983 break; 2554 break;
1984 2555
1985 /* we might have forked, so reify kernel state if necessary */ 2556 /* we might have forked, so reify kernel state if necessary */
1986 if (expect_false (postfork)) 2557 if (expect_false (postfork))
1987 loop_fork (EV_A); 2558 loop_fork (EV_A);
… …
1992 /* calculate blocking time */ 2563 /* calculate blocking time */
1993 { 2564 {
1994 ev_tstamp waittime = 0.; 2565 ev_tstamp waittime = 0.;
1995 ev_tstamp sleeptime = 0.; 2566 ev_tstamp sleeptime = 0.;
1996 2567
2568 /* remember old timestamp for io_blocktime calculation */
2569 ev_tstamp prev_mn_now = mn_now;
2570
2571 /* update time to cancel out callback processing overhead */
2572 time_update (EV_A_ 1e100);
2573
2574 /* from now on, we want a pipe-wake-up */
2575 pipe_write_wanted = 1;
2576
1997 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2577 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1998 { 2578 {
1999 /* update time to cancel out callback processing overhead */
2000 time_update (EV_A_ 1e100);
2001
2002 waittime = MAX_BLOCKTIME; 2579 waittime = MAX_BLOCKTIME;
2003 2580
2004 if (timercnt) 2581 if (timercnt)
2005 { 2582 {
2006 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2583 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2007 if (waittime > to) waittime = to; 2584 if (waittime > to) waittime = to;
2008 } 2585 }
2009 2586
2010#if EV_PERIODIC_ENABLE 2587#if EV_PERIODIC_ENABLE
2011 if (periodiccnt) 2588 if (periodiccnt)
2012 { 2589 {
2013 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2590 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2014 if (waittime > to) waittime = to; 2591 if (waittime > to) waittime = to;
2015 } 2592 }
2016#endif 2593#endif
2017 2594
2595 /* don't let timeouts decrease the waittime below timeout_blocktime */
2018 if (expect_false (waittime < timeout_blocktime)) 2596 if (expect_false (waittime < timeout_blocktime))
2019 waittime = timeout_blocktime; 2597 waittime = timeout_blocktime;
2020 2598
2021 sleeptime = waittime - backend_fudge; 2599 /* at this point, we NEED to wait, so we have to ensure */
2600 /* to pass a minimum nonzero value to the backend */
2601 if (expect_false (waittime < backend_mintime))
2602 waittime = backend_mintime;
2022 2603
2604 /* extra check because io_blocktime is commonly 0 */
2023 if (expect_true (sleeptime > io_blocktime)) 2605 if (expect_false (io_blocktime))
2024 sleeptime = io_blocktime;
2025
2026 if (sleeptime)
2027 { 2606 {
2607 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2608
2609 if (sleeptime > waittime - backend_mintime)
2610 sleeptime = waittime - backend_mintime;
2611
2612 if (expect_true (sleeptime > 0.))
2613 {
2028 ev_sleep (sleeptime); 2614 ev_sleep (sleeptime);
2029 waittime -= sleeptime; 2615 waittime -= sleeptime;
2616 }
2030 } 2617 }
2031 } 2618 }
2032 2619
2620#if EV_FEATURE_API
2033 ++loop_count; 2621 ++loop_count;
2622#endif
2623 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2034 backend_poll (EV_A_ waittime); 2624 backend_poll (EV_A_ waittime);
2625 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2626
2627 pipe_write_wanted = 0;
2628
2629 if (pipe_write_skipped)
2630 {
2631 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2632 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2633 }
2634
2035 2635
2036 /* update ev_rt_now, do magic */ 2636 /* update ev_rt_now, do magic */
2037 time_update (EV_A_ waittime + sleeptime); 2637 time_update (EV_A_ waittime + sleeptime);
2038 } 2638 }
2039 2639
… …
2046#if EV_IDLE_ENABLE 2646#if EV_IDLE_ENABLE
2047 /* queue idle watchers unless other events are pending */ 2647 /* queue idle watchers unless other events are pending */
2048 idle_reify (EV_A); 2648 idle_reify (EV_A);
2049#endif 2649#endif
2050 2650
2651#if EV_CHECK_ENABLE
2051 /* queue check watchers, to be executed first */ 2652 /* queue check watchers, to be executed first */
2052 if (expect_false (checkcnt)) 2653 if (expect_false (checkcnt))
2053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2654 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2655#endif
2054 2656
2055 call_pending (EV_A); 2657 EV_INVOKE_PENDING;
2056 } 2658 }
2057 while (expect_true ( 2659 while (expect_true (
2058 activecnt 2660 activecnt
2059 && !loop_done 2661 && !loop_done
2060 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2662 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2061 )); 2663 ));
2062 2664
2063 if (loop_done == EVUNLOOP_ONE) 2665 if (loop_done == EVBREAK_ONE)
2064 loop_done = EVUNLOOP_CANCEL; 2666 loop_done = EVBREAK_CANCEL;
2667
2668#if EV_FEATURE_API
2669 --loop_depth;
2670#endif
2065} 2671}
2066 2672
2067void 2673void
2068ev_unloop (EV_P_ int how) 2674ev_break (EV_P_ int how)
2069{ 2675{
2070 loop_done = how; 2676 loop_done = how;
2071} 2677}
2072 2678
2679void
2680ev_ref (EV_P)
2681{
2682 ++activecnt;
2683}
2684
2685void
2686ev_unref (EV_P)
2687{
2688 --activecnt;
2689}
2690
2691void
2692ev_now_update (EV_P)
2693{
2694 time_update (EV_A_ 1e100);
2695}
2696
2697void
2698ev_suspend (EV_P)
2699{
2700 ev_now_update (EV_A);
2701}
2702
2703void
2704ev_resume (EV_P)
2705{
2706 ev_tstamp mn_prev = mn_now;
2707
2708 ev_now_update (EV_A);
2709 timers_reschedule (EV_A_ mn_now - mn_prev);
2710#if EV_PERIODIC_ENABLE
2711 /* TODO: really do this? */
2712 periodics_reschedule (EV_A);
2713#endif
2714}
2715
2073/*****************************************************************************/ 2716/*****************************************************************************/
2717/* singly-linked list management, used when the expected list length is short */
2074 2718
2075void inline_size 2719inline_size void
2076wlist_add (WL *head, WL elem) 2720wlist_add (WL *head, WL elem)
2077{ 2721{
2078 elem->next = *head; 2722 elem->next = *head;
2079 *head = elem; 2723 *head = elem;
2080} 2724}
2081 2725
2082void inline_size 2726inline_size void
2083wlist_del (WL *head, WL elem) 2727wlist_del (WL *head, WL elem)
2084{ 2728{
2085 while (*head) 2729 while (*head)
2086 { 2730 {
2087 if (*head == elem) 2731 if (expect_true (*head == elem))
2088 { 2732 {
2089 *head = elem->next; 2733 *head = elem->next;
2090 return; 2734 break;
2091 } 2735 }
2092 2736
2093 head = &(*head)->next; 2737 head = &(*head)->next;
2094 } 2738 }
2095} 2739}
2096 2740
2097void inline_speed 2741/* internal, faster, version of ev_clear_pending */
2742inline_speed void
2098clear_pending (EV_P_ W w) 2743clear_pending (EV_P_ W w)
2099{ 2744{
2100 if (w->pending) 2745 if (w->pending)
2101 { 2746 {
2102 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2747 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103 w->pending = 0; 2748 w->pending = 0;
2104 } 2749 }
2105} 2750}
2106 2751
2107int 2752int
… …
2111 int pending = w_->pending; 2756 int pending = w_->pending;
2112 2757
2113 if (expect_true (pending)) 2758 if (expect_true (pending))
2114 { 2759 {
2115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2760 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2761 p->w = (W)&pending_w;
2116 w_->pending = 0; 2762 w_->pending = 0;
2117 p->w = 0;
2118 return p->events; 2763 return p->events;
2119 } 2764 }
2120 else 2765 else
2121 return 0; 2766 return 0;
2122} 2767}
2123 2768
2124void inline_size 2769inline_size void
2125pri_adjust (EV_P_ W w) 2770pri_adjust (EV_P_ W w)
2126{ 2771{
2127 int pri = w->priority; 2772 int pri = ev_priority (w);
2128 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2773 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2774 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130 w->priority = pri; 2775 ev_set_priority (w, pri);
2131} 2776}
2132 2777
2133void inline_speed 2778inline_speed void
2134ev_start (EV_P_ W w, int active) 2779ev_start (EV_P_ W w, int active)
2135{ 2780{
2136 pri_adjust (EV_A_ w); 2781 pri_adjust (EV_A_ w);
2137 w->active = active; 2782 w->active = active;
2138 ev_ref (EV_A); 2783 ev_ref (EV_A);
2139} 2784}
2140 2785
2141void inline_size 2786inline_size void
2142ev_stop (EV_P_ W w) 2787ev_stop (EV_P_ W w)
2143{ 2788{
2144 ev_unref (EV_A); 2789 ev_unref (EV_A);
2145 w->active = 0; 2790 w->active = 0;
2146} 2791}
… …
2153 int fd = w->fd; 2798 int fd = w->fd;
2154 2799
2155 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2156 return; 2801 return;
2157 2802
2158 assert (("ev_io_start called with negative fd", fd >= 0)); 2803 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2159 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2804 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160 2805
2161 EV_FREQUENT_CHECK; 2806 EV_FREQUENT_CHECK;
2162 2807
2163 ev_start (EV_A_ (W)w, 1); 2808 ev_start (EV_A_ (W)w, 1);
2164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2809 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165 wlist_add (&anfds[fd].head, (WL)w); 2810 wlist_add (&anfds[fd].head, (WL)w);
2166 2811
2167 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2812 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2168 w->events &= ~EV_IOFDSET; 2813 w->events &= ~EV__IOFDSET;
2169 2814
2170 EV_FREQUENT_CHECK; 2815 EV_FREQUENT_CHECK;
2171} 2816}
2172 2817
2173void noinline 2818void noinline
… …
2175{ 2820{
2176 clear_pending (EV_A_ (W)w); 2821 clear_pending (EV_A_ (W)w);
2177 if (expect_false (!ev_is_active (w))) 2822 if (expect_false (!ev_is_active (w)))
2178 return; 2823 return;
2179 2824
2180 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2825 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2181 2826
2182 EV_FREQUENT_CHECK; 2827 EV_FREQUENT_CHECK;
2183 2828
2184 wlist_del (&anfds[w->fd].head, (WL)w); 2829 wlist_del (&anfds[w->fd].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 2830 ev_stop (EV_A_ (W)w);
2186 2831
2187 fd_change (EV_A_ w->fd, 1); 2832 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2188 2833
2189 EV_FREQUENT_CHECK; 2834 EV_FREQUENT_CHECK;
2190} 2835}
2191 2836
2192void noinline 2837void noinline
… …
2195 if (expect_false (ev_is_active (w))) 2840 if (expect_false (ev_is_active (w)))
2196 return; 2841 return;
2197 2842
2198 ev_at (w) += mn_now; 2843 ev_at (w) += mn_now;
2199 2844
2200 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2845 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2201 2846
2202 EV_FREQUENT_CHECK; 2847 EV_FREQUENT_CHECK;
2203 2848
2204 ++timercnt; 2849 ++timercnt;
2205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2850 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2208 ANHE_at_cache (timers [ev_active (w)]); 2853 ANHE_at_cache (timers [ev_active (w)]);
2209 upheap (timers, ev_active (w)); 2854 upheap (timers, ev_active (w));
2210 2855
2211 EV_FREQUENT_CHECK; 2856 EV_FREQUENT_CHECK;
2212 2857
2213 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2858 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214} 2859}
2215 2860
2216void noinline 2861void noinline
2217ev_timer_stop (EV_P_ ev_timer *w) 2862ev_timer_stop (EV_P_ ev_timer *w)
2218{ 2863{
… …
2223 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2224 2869
2225 { 2870 {
2226 int active = ev_active (w); 2871 int active = ev_active (w);
2227 2872
2228 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2873 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229 2874
2230 --timercnt; 2875 --timercnt;
2231 2876
2232 if (expect_true (active < timercnt + HEAP0)) 2877 if (expect_true (active < timercnt + HEAP0))
2233 { 2878 {
2234 timers [active] = timers [timercnt + HEAP0]; 2879 timers [active] = timers [timercnt + HEAP0];
2235 adjustheap (timers, timercnt, active); 2880 adjustheap (timers, timercnt, active);
2236 } 2881 }
2237 } 2882 }
2238 2883
2239 EV_FREQUENT_CHECK;
2240
2241 ev_at (w) -= mn_now; 2884 ev_at (w) -= mn_now;
2242 2885
2243 ev_stop (EV_A_ (W)w); 2886 ev_stop (EV_A_ (W)w);
2887
2888 EV_FREQUENT_CHECK;
2244} 2889}
2245 2890
2246void noinline 2891void noinline
2247ev_timer_again (EV_P_ ev_timer *w) 2892ev_timer_again (EV_P_ ev_timer *w)
2248{ 2893{
… …
2266 } 2911 }
2267 2912
2268 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2269} 2914}
2270 2915
2916ev_tstamp
2917ev_timer_remaining (EV_P_ ev_timer *w)
2918{
2919 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2920}
2921
2271#if EV_PERIODIC_ENABLE 2922#if EV_PERIODIC_ENABLE
2272void noinline 2923void noinline
2273ev_periodic_start (EV_P_ ev_periodic *w) 2924ev_periodic_start (EV_P_ ev_periodic *w)
2274{ 2925{
2275 if (expect_false (ev_is_active (w))) 2926 if (expect_false (ev_is_active (w)))
… …
2277 2928
2278 if (w->reschedule_cb) 2929 if (w->reschedule_cb)
2279 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280 else if (w->interval) 2931 else if (w->interval)
2281 { 2932 {
2282 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2933 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2283 /* this formula differs from the one in periodic_reify because we do not always round up */ 2934 periodic_recalc (EV_A_ w);
2284 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2285 } 2935 }
2286 else 2936 else
2287 ev_at (w) = w->offset; 2937 ev_at (w) = w->offset;
2288 2938
2289 EV_FREQUENT_CHECK; 2939 EV_FREQUENT_CHECK;
… …
2295 ANHE_at_cache (periodics [ev_active (w)]); 2945 ANHE_at_cache (periodics [ev_active (w)]);
2296 upheap (periodics, ev_active (w)); 2946 upheap (periodics, ev_active (w));
2297 2947
2298 EV_FREQUENT_CHECK; 2948 EV_FREQUENT_CHECK;
2299 2949
2300 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2950 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2301} 2951}
2302 2952
2303void noinline 2953void noinline
2304ev_periodic_stop (EV_P_ ev_periodic *w) 2954ev_periodic_stop (EV_P_ ev_periodic *w)
2305{ 2955{
… …
2310 EV_FREQUENT_CHECK; 2960 EV_FREQUENT_CHECK;
2311 2961
2312 { 2962 {
2313 int active = ev_active (w); 2963 int active = ev_active (w);
2314 2964
2315 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2965 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316 2966
2317 --periodiccnt; 2967 --periodiccnt;
2318 2968
2319 if (expect_true (active < periodiccnt + HEAP0)) 2969 if (expect_true (active < periodiccnt + HEAP0))
2320 { 2970 {
2321 periodics [active] = periodics [periodiccnt + HEAP0]; 2971 periodics [active] = periodics [periodiccnt + HEAP0];
2322 adjustheap (periodics, periodiccnt, active); 2972 adjustheap (periodics, periodiccnt, active);
2323 } 2973 }
2324 } 2974 }
2325 2975
2326 EV_FREQUENT_CHECK;
2327
2328 ev_stop (EV_A_ (W)w); 2976 ev_stop (EV_A_ (W)w);
2977
2978 EV_FREQUENT_CHECK;
2329} 2979}
2330 2980
2331void noinline 2981void noinline
2332ev_periodic_again (EV_P_ ev_periodic *w) 2982ev_periodic_again (EV_P_ ev_periodic *w)
2333{ 2983{
… …
2339 2989
2340#ifndef SA_RESTART 2990#ifndef SA_RESTART
2341# define SA_RESTART 0 2991# define SA_RESTART 0
2342#endif 2992#endif
2343 2993
2994#if EV_SIGNAL_ENABLE
2995
2344void noinline 2996void noinline
2345ev_signal_start (EV_P_ ev_signal *w) 2997ev_signal_start (EV_P_ ev_signal *w)
2346{ 2998{
2347#if EV_MULTIPLICITY
2348 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349#endif
2350 if (expect_false (ev_is_active (w))) 2999 if (expect_false (ev_is_active (w)))
2351 return; 3000 return;
2352 3001
2353 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3002 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2354 3003
2355 evpipe_init (EV_A); 3004#if EV_MULTIPLICITY
3005 assert (("libev: a signal must not be attached to two different loops",
3006 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2356 3007
2357 EV_FREQUENT_CHECK; 3008 signals [w->signum - 1].loop = EV_A;
3009#endif
2358 3010
3011 EV_FREQUENT_CHECK;
3012
3013#if EV_USE_SIGNALFD
3014 if (sigfd == -2)
2359 { 3015 {
2360#ifndef _WIN32 3016 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2361 sigset_t full, prev; 3017 if (sigfd < 0 && errno == EINVAL)
2362 sigfillset (&full); 3018 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2363 sigprocmask (SIG_SETMASK, &full, &prev);
2364#endif
2365 3019
2366 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3020 if (sigfd >= 0)
3021 {
3022 fd_intern (sigfd); /* doing it twice will not hurt */
2367 3023
2368#ifndef _WIN32 3024 sigemptyset (&sigfd_set);
2369 sigprocmask (SIG_SETMASK, &prev, 0); 3025
2370#endif 3026 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3027 ev_set_priority (&sigfd_w, EV_MAXPRI);
3028 ev_io_start (EV_A_ &sigfd_w);
3029 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3030 }
2371 } 3031 }
3032
3033 if (sigfd >= 0)
3034 {
3035 /* TODO: check .head */
3036 sigaddset (&sigfd_set, w->signum);
3037 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3038
3039 signalfd (sigfd, &sigfd_set, 0);
3040 }
3041#endif
2372 3042
2373 ev_start (EV_A_ (W)w, 1); 3043 ev_start (EV_A_ (W)w, 1);
2374 wlist_add (&signals [w->signum - 1].head, (WL)w); 3044 wlist_add (&signals [w->signum - 1].head, (WL)w);
2375 3045
2376 if (!((WL)w)->next) 3046 if (!((WL)w)->next)
3047# if EV_USE_SIGNALFD
3048 if (sigfd < 0) /*TODO*/
3049# endif
2377 { 3050 {
2378#if _WIN32 3051# ifdef _WIN32
3052 evpipe_init (EV_A);
3053
2379 signal (w->signum, ev_sighandler); 3054 signal (w->signum, ev_sighandler);
2380#else 3055# else
2381 struct sigaction sa; 3056 struct sigaction sa;
3057
3058 evpipe_init (EV_A);
3059
2382 sa.sa_handler = ev_sighandler; 3060 sa.sa_handler = ev_sighandler;
2383 sigfillset (&sa.sa_mask); 3061 sigfillset (&sa.sa_mask);
2384 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3062 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2385 sigaction (w->signum, &sa, 0); 3063 sigaction (w->signum, &sa, 0);
3064
3065 if (origflags & EVFLAG_NOSIGMASK)
3066 {
3067 sigemptyset (&sa.sa_mask);
3068 sigaddset (&sa.sa_mask, w->signum);
3069 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3070 }
2386#endif 3071#endif
2387 } 3072 }
2388 3073
2389 EV_FREQUENT_CHECK; 3074 EV_FREQUENT_CHECK;
2390} 3075}
2391 3076
2392void noinline 3077void noinline
… …
2400 3085
2401 wlist_del (&signals [w->signum - 1].head, (WL)w); 3086 wlist_del (&signals [w->signum - 1].head, (WL)w);
2402 ev_stop (EV_A_ (W)w); 3087 ev_stop (EV_A_ (W)w);
2403 3088
2404 if (!signals [w->signum - 1].head) 3089 if (!signals [w->signum - 1].head)
3090 {
3091#if EV_MULTIPLICITY
3092 signals [w->signum - 1].loop = 0; /* unattach from signal */
3093#endif
3094#if EV_USE_SIGNALFD
3095 if (sigfd >= 0)
3096 {
3097 sigset_t ss;
3098
3099 sigemptyset (&ss);
3100 sigaddset (&ss, w->signum);
3101 sigdelset (&sigfd_set, w->signum);
3102
3103 signalfd (sigfd, &sigfd_set, 0);
3104 sigprocmask (SIG_UNBLOCK, &ss, 0);
3105 }
3106 else
3107#endif
2405 signal (w->signum, SIG_DFL); 3108 signal (w->signum, SIG_DFL);
3109 }
2406 3110
2407 EV_FREQUENT_CHECK; 3111 EV_FREQUENT_CHECK;
2408} 3112}
3113
3114#endif
3115
3116#if EV_CHILD_ENABLE
2409 3117
2410void 3118void
2411ev_child_start (EV_P_ ev_child *w) 3119ev_child_start (EV_P_ ev_child *w)
2412{ 3120{
2413#if EV_MULTIPLICITY 3121#if EV_MULTIPLICITY
2414 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3122 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2415#endif 3123#endif
2416 if (expect_false (ev_is_active (w))) 3124 if (expect_false (ev_is_active (w)))
2417 return; 3125 return;
2418 3126
2419 EV_FREQUENT_CHECK; 3127 EV_FREQUENT_CHECK;
2420 3128
2421 ev_start (EV_A_ (W)w, 1); 3129 ev_start (EV_A_ (W)w, 1);
2422 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3130 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2423 3131
2424 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2425} 3133}
2426 3134
2427void 3135void
… …
2431 if (expect_false (!ev_is_active (w))) 3139 if (expect_false (!ev_is_active (w)))
2432 return; 3140 return;
2433 3141
2434 EV_FREQUENT_CHECK; 3142 EV_FREQUENT_CHECK;
2435 3143
2436 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3144 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2437 ev_stop (EV_A_ (W)w); 3145 ev_stop (EV_A_ (W)w);
2438 3146
2439 EV_FREQUENT_CHECK; 3147 EV_FREQUENT_CHECK;
2440} 3148}
3149
3150#endif
2441 3151
2442#if EV_STAT_ENABLE 3152#if EV_STAT_ENABLE
2443 3153
2444# ifdef _WIN32 3154# ifdef _WIN32
2445# undef lstat 3155# undef lstat
… …
2451#define MIN_STAT_INTERVAL 0.1074891 3161#define MIN_STAT_INTERVAL 0.1074891
2452 3162
2453static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3163static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2454 3164
2455#if EV_USE_INOTIFY 3165#if EV_USE_INOTIFY
2456# define EV_INOTIFY_BUFSIZE 8192 3166
3167/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3168# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2457 3169
2458static void noinline 3170static void noinline
2459infy_add (EV_P_ ev_stat *w) 3171infy_add (EV_P_ ev_stat *w)
2460{ 3172{
2461 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); 3173 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);
2462 3174
2463 if (w->wd < 0) 3175 if (w->wd >= 0)
3176 {
3177 struct statfs sfs;
3178
3179 /* now local changes will be tracked by inotify, but remote changes won't */
3180 /* unless the filesystem is known to be local, we therefore still poll */
3181 /* also do poll on <2.6.25, but with normal frequency */
3182
3183 if (!fs_2625)
3184 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3185 else if (!statfs (w->path, &sfs)
3186 && (sfs.f_type == 0x1373 /* devfs */
3187 || sfs.f_type == 0xEF53 /* ext2/3 */
3188 || sfs.f_type == 0x3153464a /* jfs */
3189 || sfs.f_type == 0x52654973 /* reiser3 */
3190 || sfs.f_type == 0x01021994 /* tempfs */
3191 || sfs.f_type == 0x58465342 /* xfs */))
3192 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3193 else
3194 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2464 { 3195 }
3196 else
3197 {
3198 /* can't use inotify, continue to stat */
2465 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3199 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2466 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2467 3200
2468 /* monitor some parent directory for speedup hints */ 3201 /* if path is not there, monitor some parent directory for speedup hints */
2469 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3202 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2470 /* but an efficiency issue only */ 3203 /* but an efficiency issue only */
2471 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3204 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2472 { 3205 {
2473 char path [4096]; 3206 char path [4096];
… …
2483 if (!pend || pend == path) 3216 if (!pend || pend == path)
2484 break; 3217 break;
2485 3218
2486 *pend = 0; 3219 *pend = 0;
2487 w->wd = inotify_add_watch (fs_fd, path, mask); 3220 w->wd = inotify_add_watch (fs_fd, path, mask);
2488 } 3221 }
2489 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3222 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2490 } 3223 }
2491 } 3224 }
2492 3225
2493 if (w->wd >= 0) 3226 if (w->wd >= 0)
2494 {
2495 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3227 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2496 3228
2497 /* now local changes will be tracked by inotify, but remote changes won't */ 3229 /* now re-arm timer, if required */
2498 /* unless the filesystem it known to be local, we therefore still poll */ 3230 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2499 /* also do poll on <2.6.25, but with normal frequency */
2500 struct statfs sfs;
2501
2502 if (fs_2625 && !statfs (w->path, &sfs))
2503 if (sfs.f_type == 0x1373 /* devfs */
2504 || sfs.f_type == 0xEF53 /* ext2/3 */
2505 || sfs.f_type == 0x3153464a /* jfs */
2506 || sfs.f_type == 0x52654973 /* reiser3 */
2507 || sfs.f_type == 0x01021994 /* tempfs */
2508 || sfs.f_type == 0x58465342 /* xfs */)
2509 return;
2510
2511 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2512 ev_timer_again (EV_A_ &w->timer); 3231 ev_timer_again (EV_A_ &w->timer);
2513 } 3232 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2514} 3233}
2515 3234
2516static void noinline 3235static void noinline
2517infy_del (EV_P_ ev_stat *w) 3236infy_del (EV_P_ ev_stat *w)
2518{ 3237{
… …
2521 3240
2522 if (wd < 0) 3241 if (wd < 0)
2523 return; 3242 return;
2524 3243
2525 w->wd = -2; 3244 w->wd = -2;
2526 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3245 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2527 wlist_del (&fs_hash [slot].head, (WL)w); 3246 wlist_del (&fs_hash [slot].head, (WL)w);
2528 3247
2529 /* remove this watcher, if others are watching it, they will rearm */ 3248 /* remove this watcher, if others are watching it, they will rearm */
2530 inotify_rm_watch (fs_fd, wd); 3249 inotify_rm_watch (fs_fd, wd);
2531} 3250}
… …
2533static void noinline 3252static void noinline
2534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2535{ 3254{
2536 if (slot < 0) 3255 if (slot < 0)
2537 /* overflow, need to check for all hash slots */ 3256 /* overflow, need to check for all hash slots */
2538 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3257 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2539 infy_wd (EV_A_ slot, wd, ev); 3258 infy_wd (EV_A_ slot, wd, ev);
2540 else 3259 else
2541 { 3260 {
2542 WL w_; 3261 WL w_;
2543 3262
2544 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3263 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2545 { 3264 {
2546 ev_stat *w = (ev_stat *)w_; 3265 ev_stat *w = (ev_stat *)w_;
2547 w_ = w_->next; /* lets us remove this watcher and all before it */ 3266 w_ = w_->next; /* lets us remove this watcher and all before it */
2548 3267
2549 if (w->wd == wd || wd == -1) 3268 if (w->wd == wd || wd == -1)
2550 { 3269 {
2551 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3270 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2552 { 3271 {
2553 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3272 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2554 w->wd = -1; 3273 w->wd = -1;
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3274 infy_add (EV_A_ w); /* re-add, no matter what */
2556 } 3275 }
2557 3276
2558 stat_timer_cb (EV_A_ &w->timer, 0); 3277 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2563 3282
2564static void 3283static void
2565infy_cb (EV_P_ ev_io *w, int revents) 3284infy_cb (EV_P_ ev_io *w, int revents)
2566{ 3285{
2567 char buf [EV_INOTIFY_BUFSIZE]; 3286 char buf [EV_INOTIFY_BUFSIZE];
2568 struct inotify_event *ev = (struct inotify_event *)buf;
2569 int ofs; 3287 int ofs;
2570 int len = read (fs_fd, buf, sizeof (buf)); 3288 int len = read (fs_fd, buf, sizeof (buf));
2571 3289
2572 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3290 for (ofs = 0; ofs < len; )
3291 {
3292 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2573 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3293 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3294 ofs += sizeof (struct inotify_event) + ev->len;
3295 }
2574} 3296}
2575 3297
2576void inline_size 3298inline_size void ecb_cold
2577check_2625 (EV_P) 3299ev_check_2625 (EV_P)
2578{ 3300{
2579 /* kernels < 2.6.25 are borked 3301 /* kernels < 2.6.25 are borked
2580 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3302 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2581 */ 3303 */
2582 struct utsname buf; 3304 if (ev_linux_version () < 0x020619)
2583 int major, minor, micro;
2584
2585 if (uname (&buf))
2586 return; 3305 return;
2587 3306
2588 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2589 return;
2590
2591 if (major < 2
2592 || (major == 2 && minor < 6)
2593 || (major == 2 && minor == 6 && micro < 25))
2594 return;
2595
2596 fs_2625 = 1; 3307 fs_2625 = 1;
2597} 3308}
2598 3309
2599void inline_size 3310inline_size int
3311infy_newfd (void)
3312{
3313#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3314 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3315 if (fd >= 0)
3316 return fd;
3317#endif
3318 return inotify_init ();
3319}
3320
3321inline_size void
2600infy_init (EV_P) 3322infy_init (EV_P)
2601{ 3323{
2602 if (fs_fd != -2) 3324 if (fs_fd != -2)
2603 return; 3325 return;
2604 3326
2605 fs_fd = -1; 3327 fs_fd = -1;
2606 3328
2607 check_2625 (EV_A); 3329 ev_check_2625 (EV_A);
2608 3330
2609 fs_fd = inotify_init (); 3331 fs_fd = infy_newfd ();
2610 3332
2611 if (fs_fd >= 0) 3333 if (fs_fd >= 0)
2612 { 3334 {
3335 fd_intern (fs_fd);
2613 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3336 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2614 ev_set_priority (&fs_w, EV_MAXPRI); 3337 ev_set_priority (&fs_w, EV_MAXPRI);
2615 ev_io_start (EV_A_ &fs_w); 3338 ev_io_start (EV_A_ &fs_w);
3339 ev_unref (EV_A);
2616 } 3340 }
2617} 3341}
2618 3342
2619void inline_size 3343inline_size void
2620infy_fork (EV_P) 3344infy_fork (EV_P)
2621{ 3345{
2622 int slot; 3346 int slot;
2623 3347
2624 if (fs_fd < 0) 3348 if (fs_fd < 0)
2625 return; 3349 return;
2626 3350
3351 ev_ref (EV_A);
3352 ev_io_stop (EV_A_ &fs_w);
2627 close (fs_fd); 3353 close (fs_fd);
2628 fs_fd = inotify_init (); 3354 fs_fd = infy_newfd ();
2629 3355
3356 if (fs_fd >= 0)
3357 {
3358 fd_intern (fs_fd);
3359 ev_io_set (&fs_w, fs_fd, EV_READ);
3360 ev_io_start (EV_A_ &fs_w);
3361 ev_unref (EV_A);
3362 }
3363
2630 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3364 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2631 { 3365 {
2632 WL w_ = fs_hash [slot].head; 3366 WL w_ = fs_hash [slot].head;
2633 fs_hash [slot].head = 0; 3367 fs_hash [slot].head = 0;
2634 3368
2635 while (w_) 3369 while (w_)
… …
2640 w->wd = -1; 3374 w->wd = -1;
2641 3375
2642 if (fs_fd >= 0) 3376 if (fs_fd >= 0)
2643 infy_add (EV_A_ w); /* re-add, no matter what */ 3377 infy_add (EV_A_ w); /* re-add, no matter what */
2644 else 3378 else
3379 {
3380 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3381 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2645 ev_timer_again (EV_A_ &w->timer); 3382 ev_timer_again (EV_A_ &w->timer);
3383 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3384 }
2646 } 3385 }
2647 } 3386 }
2648} 3387}
2649 3388
2650#endif 3389#endif
… …
2667static void noinline 3406static void noinline
2668stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3407stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2669{ 3408{
2670 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3409 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2671 3410
2672 /* we copy this here each the time so that */ 3411 ev_statdata prev = w->attr;
2673 /* prev has the old value when the callback gets invoked */
2674 w->prev = w->attr;
2675 ev_stat_stat (EV_A_ w); 3412 ev_stat_stat (EV_A_ w);
2676 3413
2677 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3414 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2678 if ( 3415 if (
2679 w->prev.st_dev != w->attr.st_dev 3416 prev.st_dev != w->attr.st_dev
2680 || w->prev.st_ino != w->attr.st_ino 3417 || prev.st_ino != w->attr.st_ino
2681 || w->prev.st_mode != w->attr.st_mode 3418 || prev.st_mode != w->attr.st_mode
2682 || w->prev.st_nlink != w->attr.st_nlink 3419 || prev.st_nlink != w->attr.st_nlink
2683 || w->prev.st_uid != w->attr.st_uid 3420 || prev.st_uid != w->attr.st_uid
2684 || w->prev.st_gid != w->attr.st_gid 3421 || prev.st_gid != w->attr.st_gid
2685 || w->prev.st_rdev != w->attr.st_rdev 3422 || prev.st_rdev != w->attr.st_rdev
2686 || w->prev.st_size != w->attr.st_size 3423 || prev.st_size != w->attr.st_size
2687 || w->prev.st_atime != w->attr.st_atime 3424 || prev.st_atime != w->attr.st_atime
2688 || w->prev.st_mtime != w->attr.st_mtime 3425 || prev.st_mtime != w->attr.st_mtime
2689 || w->prev.st_ctime != w->attr.st_ctime 3426 || prev.st_ctime != w->attr.st_ctime
2690 ) { 3427 ) {
3428 /* we only update w->prev on actual differences */
3429 /* in case we test more often than invoke the callback, */
3430 /* to ensure that prev is always different to attr */
3431 w->prev = prev;
3432
2691 #if EV_USE_INOTIFY 3433 #if EV_USE_INOTIFY
2692 if (fs_fd >= 0) 3434 if (fs_fd >= 0)
2693 { 3435 {
2694 infy_del (EV_A_ w); 3436 infy_del (EV_A_ w);
2695 infy_add (EV_A_ w); 3437 infy_add (EV_A_ w);
… …
2720 3462
2721 if (fs_fd >= 0) 3463 if (fs_fd >= 0)
2722 infy_add (EV_A_ w); 3464 infy_add (EV_A_ w);
2723 else 3465 else
2724#endif 3466#endif
3467 {
2725 ev_timer_again (EV_A_ &w->timer); 3468 ev_timer_again (EV_A_ &w->timer);
3469 ev_unref (EV_A);
3470 }
2726 3471
2727 ev_start (EV_A_ (W)w, 1); 3472 ev_start (EV_A_ (W)w, 1);
2728 3473
2729 EV_FREQUENT_CHECK; 3474 EV_FREQUENT_CHECK;
2730} 3475}
… …
2739 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2740 3485
2741#if EV_USE_INOTIFY 3486#if EV_USE_INOTIFY
2742 infy_del (EV_A_ w); 3487 infy_del (EV_A_ w);
2743#endif 3488#endif
3489
3490 if (ev_is_active (&w->timer))
3491 {
3492 ev_ref (EV_A);
2744 ev_timer_stop (EV_A_ &w->timer); 3493 ev_timer_stop (EV_A_ &w->timer);
3494 }
2745 3495
2746 ev_stop (EV_A_ (W)w); 3496 ev_stop (EV_A_ (W)w);
2747 3497
2748 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2749} 3499}
… …
2794 3544
2795 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2796} 3546}
2797#endif 3547#endif
2798 3548
3549#if EV_PREPARE_ENABLE
2799void 3550void
2800ev_prepare_start (EV_P_ ev_prepare *w) 3551ev_prepare_start (EV_P_ ev_prepare *w)
2801{ 3552{
2802 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2803 return; 3554 return;
… …
2829 3580
2830 ev_stop (EV_A_ (W)w); 3581 ev_stop (EV_A_ (W)w);
2831 3582
2832 EV_FREQUENT_CHECK; 3583 EV_FREQUENT_CHECK;
2833} 3584}
3585#endif
2834 3586
3587#if EV_CHECK_ENABLE
2835void 3588void
2836ev_check_start (EV_P_ ev_check *w) 3589ev_check_start (EV_P_ ev_check *w)
2837{ 3590{
2838 if (expect_false (ev_is_active (w))) 3591 if (expect_false (ev_is_active (w)))
2839 return; 3592 return;
… …
2865 3618
2866 ev_stop (EV_A_ (W)w); 3619 ev_stop (EV_A_ (W)w);
2867 3620
2868 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2869} 3622}
3623#endif
2870 3624
2871#if EV_EMBED_ENABLE 3625#if EV_EMBED_ENABLE
2872void noinline 3626void noinline
2873ev_embed_sweep (EV_P_ ev_embed *w) 3627ev_embed_sweep (EV_P_ ev_embed *w)
2874{ 3628{
2875 ev_loop (w->other, EVLOOP_NONBLOCK); 3629 ev_run (w->other, EVRUN_NOWAIT);
2876} 3630}
2877 3631
2878static void 3632static void
2879embed_io_cb (EV_P_ ev_io *io, int revents) 3633embed_io_cb (EV_P_ ev_io *io, int revents)
2880{ 3634{
2881 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3635 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2882 3636
2883 if (ev_cb (w)) 3637 if (ev_cb (w))
2884 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3638 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2885 else 3639 else
2886 ev_loop (w->other, EVLOOP_NONBLOCK); 3640 ev_run (w->other, EVRUN_NOWAIT);
2887} 3641}
2888 3642
2889static void 3643static void
2890embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3644embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2891{ 3645{
2892 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3646 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2893 3647
2894 { 3648 {
2895 struct ev_loop *loop = w->other; 3649 EV_P = w->other;
2896 3650
2897 while (fdchangecnt) 3651 while (fdchangecnt)
2898 { 3652 {
2899 fd_reify (EV_A); 3653 fd_reify (EV_A);
2900 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3654 ev_run (EV_A_ EVRUN_NOWAIT);
2901 } 3655 }
2902 } 3656 }
2903} 3657}
2904 3658
2905static void 3659static void
… …
2908 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3662 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2909 3663
2910 ev_embed_stop (EV_A_ w); 3664 ev_embed_stop (EV_A_ w);
2911 3665
2912 { 3666 {
2913 struct ev_loop *loop = w->other; 3667 EV_P = w->other;
2914 3668
2915 ev_loop_fork (EV_A); 3669 ev_loop_fork (EV_A);
2916 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3670 ev_run (EV_A_ EVRUN_NOWAIT);
2917 } 3671 }
2918 3672
2919 ev_embed_start (EV_A_ w); 3673 ev_embed_start (EV_A_ w);
2920} 3674}
2921 3675
… …
2932{ 3686{
2933 if (expect_false (ev_is_active (w))) 3687 if (expect_false (ev_is_active (w)))
2934 return; 3688 return;
2935 3689
2936 { 3690 {
2937 struct ev_loop *loop = w->other; 3691 EV_P = w->other;
2938 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3692 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2939 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3693 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2940 } 3694 }
2941 3695
2942 EV_FREQUENT_CHECK; 3696 EV_FREQUENT_CHECK;
2943 3697
… …
2969 3723
2970 ev_io_stop (EV_A_ &w->io); 3724 ev_io_stop (EV_A_ &w->io);
2971 ev_prepare_stop (EV_A_ &w->prepare); 3725 ev_prepare_stop (EV_A_ &w->prepare);
2972 ev_fork_stop (EV_A_ &w->fork); 3726 ev_fork_stop (EV_A_ &w->fork);
2973 3727
3728 ev_stop (EV_A_ (W)w);
3729
2974 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2975} 3731}
2976#endif 3732#endif
2977 3733
2978#if EV_FORK_ENABLE 3734#if EV_FORK_ENABLE
… …
3011 3767
3012 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
3013} 3769}
3014#endif 3770#endif
3015 3771
3772#if EV_CLEANUP_ENABLE
3773void
3774ev_cleanup_start (EV_P_ ev_cleanup *w)
3775{
3776 if (expect_false (ev_is_active (w)))
3777 return;
3778
3779 EV_FREQUENT_CHECK;
3780
3781 ev_start (EV_A_ (W)w, ++cleanupcnt);
3782 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3783 cleanups [cleanupcnt - 1] = w;
3784
3785 /* cleanup watchers should never keep a refcount on the loop */
3786 ev_unref (EV_A);
3787 EV_FREQUENT_CHECK;
3788}
3789
3790void
3791ev_cleanup_stop (EV_P_ ev_cleanup *w)
3792{
3793 clear_pending (EV_A_ (W)w);
3794 if (expect_false (!ev_is_active (w)))
3795 return;
3796
3797 EV_FREQUENT_CHECK;
3798 ev_ref (EV_A);
3799
3800 {
3801 int active = ev_active (w);
3802
3803 cleanups [active - 1] = cleanups [--cleanupcnt];
3804 ev_active (cleanups [active - 1]) = active;
3805 }
3806
3807 ev_stop (EV_A_ (W)w);
3808
3809 EV_FREQUENT_CHECK;
3810}
3811#endif
3812
3016#if EV_ASYNC_ENABLE 3813#if EV_ASYNC_ENABLE
3017void 3814void
3018ev_async_start (EV_P_ ev_async *w) 3815ev_async_start (EV_P_ ev_async *w)
3019{ 3816{
3020 if (expect_false (ev_is_active (w))) 3817 if (expect_false (ev_is_active (w)))
3021 return; 3818 return;
3022 3819
3820 w->sent = 0;
3821
3023 evpipe_init (EV_A); 3822 evpipe_init (EV_A);
3024 3823
3025 EV_FREQUENT_CHECK; 3824 EV_FREQUENT_CHECK;
3026 3825
3027 ev_start (EV_A_ (W)w, ++asynccnt); 3826 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3054 3853
3055void 3854void
3056ev_async_send (EV_P_ ev_async *w) 3855ev_async_send (EV_P_ ev_async *w)
3057{ 3856{
3058 w->sent = 1; 3857 w->sent = 1;
3059 evpipe_write (EV_A_ &gotasync); 3858 evpipe_write (EV_A_ &async_pending);
3060} 3859}
3061#endif 3860#endif
3062 3861
3063/*****************************************************************************/ 3862/*****************************************************************************/
3064 3863
… …
3104{ 3903{
3105 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3904 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3106 3905
3107 if (expect_false (!once)) 3906 if (expect_false (!once))
3108 { 3907 {
3109 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3908 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3110 return; 3909 return;
3111 } 3910 }
3112 3911
3113 once->cb = cb; 3912 once->cb = cb;
3114 once->arg = arg; 3913 once->arg = arg;
… …
3126 ev_timer_set (&once->to, timeout, 0.); 3925 ev_timer_set (&once->to, timeout, 0.);
3127 ev_timer_start (EV_A_ &once->to); 3926 ev_timer_start (EV_A_ &once->to);
3128 } 3927 }
3129} 3928}
3130 3929
3930/*****************************************************************************/
3931
3932#if EV_WALK_ENABLE
3933void ecb_cold
3934ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3935{
3936 int i, j;
3937 ev_watcher_list *wl, *wn;
3938
3939 if (types & (EV_IO | EV_EMBED))
3940 for (i = 0; i < anfdmax; ++i)
3941 for (wl = anfds [i].head; wl; )
3942 {
3943 wn = wl->next;
3944
3945#if EV_EMBED_ENABLE
3946 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3947 {
3948 if (types & EV_EMBED)
3949 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3950 }
3951 else
3952#endif
3953#if EV_USE_INOTIFY
3954 if (ev_cb ((ev_io *)wl) == infy_cb)
3955 ;
3956 else
3957#endif
3958 if ((ev_io *)wl != &pipe_w)
3959 if (types & EV_IO)
3960 cb (EV_A_ EV_IO, wl);
3961
3962 wl = wn;
3963 }
3964
3965 if (types & (EV_TIMER | EV_STAT))
3966 for (i = timercnt + HEAP0; i-- > HEAP0; )
3967#if EV_STAT_ENABLE
3968 /*TODO: timer is not always active*/
3969 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3970 {
3971 if (types & EV_STAT)
3972 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3973 }
3974 else
3975#endif
3976 if (types & EV_TIMER)
3977 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3978
3979#if EV_PERIODIC_ENABLE
3980 if (types & EV_PERIODIC)
3981 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3982 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3983#endif
3984
3985#if EV_IDLE_ENABLE
3986 if (types & EV_IDLE)
3987 for (j = NUMPRI; i--; )
3988 for (i = idlecnt [j]; i--; )
3989 cb (EV_A_ EV_IDLE, idles [j][i]);
3990#endif
3991
3992#if EV_FORK_ENABLE
3993 if (types & EV_FORK)
3994 for (i = forkcnt; i--; )
3995 if (ev_cb (forks [i]) != embed_fork_cb)
3996 cb (EV_A_ EV_FORK, forks [i]);
3997#endif
3998
3999#if EV_ASYNC_ENABLE
4000 if (types & EV_ASYNC)
4001 for (i = asynccnt; i--; )
4002 cb (EV_A_ EV_ASYNC, asyncs [i]);
4003#endif
4004
4005#if EV_PREPARE_ENABLE
4006 if (types & EV_PREPARE)
4007 for (i = preparecnt; i--; )
4008# if EV_EMBED_ENABLE
4009 if (ev_cb (prepares [i]) != embed_prepare_cb)
4010# endif
4011 cb (EV_A_ EV_PREPARE, prepares [i]);
4012#endif
4013
4014#if EV_CHECK_ENABLE
4015 if (types & EV_CHECK)
4016 for (i = checkcnt; i--; )
4017 cb (EV_A_ EV_CHECK, checks [i]);
4018#endif
4019
4020#if EV_SIGNAL_ENABLE
4021 if (types & EV_SIGNAL)
4022 for (i = 0; i < EV_NSIG - 1; ++i)
4023 for (wl = signals [i].head; wl; )
4024 {
4025 wn = wl->next;
4026 cb (EV_A_ EV_SIGNAL, wl);
4027 wl = wn;
4028 }
4029#endif
4030
4031#if EV_CHILD_ENABLE
4032 if (types & EV_CHILD)
4033 for (i = (EV_PID_HASHSIZE); i--; )
4034 for (wl = childs [i]; wl; )
4035 {
4036 wn = wl->next;
4037 cb (EV_A_ EV_CHILD, wl);
4038 wl = wn;
4039 }
4040#endif
4041/* EV_STAT 0x00001000 /* stat data changed */
4042/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4043}
4044#endif
4045
3131#if EV_MULTIPLICITY 4046#if EV_MULTIPLICITY
3132 #include "ev_wrap.h" 4047 #include "ev_wrap.h"
3133#endif 4048#endif
3134 4049
3135#ifdef __cplusplus 4050EV_CPP(})
3136}
3137#endif
3138 4051

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