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Comparing libev/ev.c (file contents):
Revision 1.256 by root, Thu Jun 19 06:53:49 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
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# 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
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# 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
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 197# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
164# endif 200# endif
201# undef EV_AVOID_STDIO
165#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
166 211
167/* 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
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
168 253
169#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 257# else
173# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
174# endif 259# endif
175#endif 260#endif
176 261
177#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 264#endif
180 265
181#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 269# else
185# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
186# endif 271# endif
187#endif 272#endif
188 273
189#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 276#endif
192 277
193#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
194# ifdef _WIN32 279# ifdef _WIN32
195# define EV_USE_POLL 0 280# define EV_USE_POLL 0
196# else 281# else
197# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 283# endif
199#endif 284#endif
200 285
201#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 289# else
205# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
206# endif 291# endif
207#endif 292#endif
208 293
… …
214# define EV_USE_PORT 0 299# define EV_USE_PORT 0
215#endif 300#endif
216 301
217#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 305# else
221# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
222# endif 307# endif
223#endif 308#endif
224 309
225#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 312#endif
232 313
233#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 316#endif
240 317
241#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 321# else
245# 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
246# endif 331# endif
247#endif 332#endif
248 333
249#if 0 /* debugging */ 334#if 0 /* debugging */
250# define EV_VERIFY 3 335# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
253#endif 338#endif
254 339
255#ifndef EV_VERIFY 340#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 342#endif
258 343
259#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 346#endif
262 347
263#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 364#endif
266 365
267/* 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
268 373
269#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
272#endif 377#endif
… …
280# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
282#endif 387#endif
283 388
284#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 392# include <sys/select.h>
287# endif 393# endif
288#endif 394#endif
289 395
290#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
291# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
292#endif 404#endif
293 405
294#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 407# include <winsock.h>
296#endif 408#endif
297 409
298#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
299/* 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 */
300# include <stdint.h> 412# include <stdint.h>
301# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
302extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
303# endif 415# endif
304int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
305# ifdef __cplusplus 417# ifdef O_CLOEXEC
306} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
307# 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};
308#endif 446#endif
309 447
310/**/ 448/**/
311 449
312#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 452#else
315# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
316#endif 454#endif
317 455
318/* 456/*
319 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
320 * It is added to ev_rt_now when scheduling periodics
321 * to ensure progress, time-wise, even when rounding
322 * errors are against us.
323 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
324 * Better solutions welcome.
325 */ 459 */
326#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 */
327 462
328#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) */
329#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) */
330/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
331 465
332#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)
333# 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)
334# 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
335#else 493#else
336# define expect(expr,value) (expr) 494 #define ecb_inline static
337# define noinline
338# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
339# define inline
340# endif 495#endif
341#endif
342 496
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. */
343#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
344#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
345#define inline_size static inline 536#define inline_size ecb_inline
346 537
347#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
348# 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)
349#else 548#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
355 551
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
358 554
359typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
362 558
363#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
365 561
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
366#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static 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)
370#endif 580#endif
371 581
372#ifdef _WIN32 582#ifdef _WIN32
373# include "ev_win32.c" 583# include "ev_win32.c"
374#endif 584#endif
375 585
376/*****************************************************************************/ 586/*****************************************************************************/
377 587
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
378static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
379 687
380void 688void ecb_cold
381ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 690{
383 syserr_cb = cb; 691 syserr_cb = cb;
384} 692}
385 693
386static void noinline 694static void noinline ecb_cold
387syserr (const char *msg) 695ev_syserr (const char *msg)
388{ 696{
389 if (!msg) 697 if (!msg)
390 msg = "(libev) system error"; 698 msg = "(libev) system error";
391 699
392 if (syserr_cb) 700 if (syserr_cb)
393 syserr_cb (msg); 701 syserr_cb (msg);
394 else 702 else
395 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
396 perror (msg); 710 perror (msg);
711#endif
397 abort (); 712 abort ();
398 } 713 }
399} 714}
400 715
401static void * 716static void *
402ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
403{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
404 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
405 * 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
406 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
407 */ 725 */
408 726
409 if (size) 727 if (size)
410 return realloc (ptr, size); 728 return realloc (ptr, size);
411 729
412 free (ptr); 730 free (ptr);
413 return 0; 731 return 0;
732#endif
414} 733}
415 734
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 736
418void 737void ecb_cold
419ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
420{ 739{
421 alloc = cb; 740 alloc = cb;
422} 741}
423 742
… …
426{ 745{
427 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
428 747
429 if (!ptr && size) 748 if (!ptr && size)
430 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
432 abort (); 755 abort ();
433 } 756 }
434 757
435 return ptr; 758 return ptr;
436} 759}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
440 763
441/*****************************************************************************/ 764/*****************************************************************************/
442 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
443typedef struct 770typedef struct
444{ 771{
445 WL head; 772 WL head;
446 unsigned char events; 773 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 776 unsigned char unused;
777#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif
448#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
449 SOCKET handle; 781 SOCKET handle;
450#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
451} ANFD; 786} ANFD;
452 787
788/* stores the pending event set for a given watcher */
453typedef struct 789typedef struct
454{ 790{
455 W w; 791 W w;
456 int events; 792 int events; /* the pending event set for the given watcher */
457} ANPENDING; 793} ANPENDING;
458 794
459#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
461typedef struct 797typedef struct
… …
464} ANFS; 800} ANFS;
465#endif 801#endif
466 802
467/* Heap Entry */ 803/* Heap Entry */
468#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
469 typedef struct { 806 typedef struct {
470 ev_tstamp at; 807 ev_tstamp at;
471 WT w; 808 WT w;
472 } ANHE; 809 } ANHE;
473 810
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #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 */
477#else 814#else
815 /* a heap element */
478 typedef WT ANHE; 816 typedef WT ANHE;
479 817
480 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
506 844
507 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
508 846
509#endif 847#endif
510 848
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
511/*****************************************************************************/ 861/*****************************************************************************/
512 862
863#ifndef EV_HAVE_EV_TIME
513ev_tstamp 864ev_tstamp
514ev_time (void) 865ev_time (void)
515{ 866{
516#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
517 struct timespec ts; 870 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 873 }
874#endif
875
521 struct timeval tv; 876 struct timeval tv;
522 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 879}
880#endif
526 881
527ev_tstamp inline_size 882inline_size ev_tstamp
528get_clock (void) 883get_clock (void)
529{ 884{
530#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
532 { 887 {
… …
553 if (delay > 0.) 908 if (delay > 0.)
554 { 909 {
555#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
556 struct timespec ts; 911 struct timespec ts;
557 912
558 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
562#elif defined(_WIN32) 915#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
564#else 917#else
565 struct timeval tv; 918 struct timeval tv;
566 919
567 tv.tv_sec = (time_t)delay; 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 921 /* something not guaranteed by newer posix versions, but guaranteed */
569 922 /* by older ones */
923 EV_TV_SET (tv, delay);
570 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
571#endif 925#endif
572 } 926 }
573} 927}
574 928
575/*****************************************************************************/ 929/*****************************************************************************/
576 930
577#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 */
578 932
579int 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
580array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
581{ 937{
582 int ncur = cur + 1; 938 int ncur = cur + 1;
583 939
584 do 940 do
… …
595 } 951 }
596 952
597 return ncur; 953 return ncur;
598} 954}
599 955
600static noinline void * 956static void * noinline ecb_cold
601array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
602{ 958{
603 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
604 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
605} 961}
962
963#define array_init_zero(base,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
606 965
607#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
608 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
609 { \ 968 { \
610 int ocur_ = (cur); \ 969 int ocur_ = (cur); \
… …
622 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
623 } 982 }
624#endif 983#endif
625 984
626#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
627 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
628 987
629/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
630 995
631void noinline 996void noinline
632ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
633{ 998{
634 W w_ = (W)w; 999 W w_ = (W)w;
… …
643 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
644 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
645 } 1010 }
646} 1011}
647 1012
648void 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
649queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
650{ 1030{
651 int i; 1031 int i;
652 1032
653 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
654 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
655} 1035}
656 1036
657/*****************************************************************************/ 1037/*****************************************************************************/
658 1038
659void inline_size 1039inline_speed void
660anfds_init (ANFD *base, int count)
661{
662 while (count--)
663 {
664 base->head = 0;
665 base->events = EV_NONE;
666 base->reify = 0;
667
668 ++base;
669 }
670}
671
672void inline_speed
673fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
674{ 1041{
675 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
676 ev_io *w; 1043 ev_io *w;
677 1044
678 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)
… …
682 if (ev) 1049 if (ev)
683 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
684 } 1051 }
685} 1052}
686 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
687void 1065void
688ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
689{ 1067{
690 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
691 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
692} 1070}
693 1071
694void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
695fd_reify (EV_P) 1075fd_reify (EV_P)
696{ 1076{
697 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
698 1103
699 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
700 { 1105 {
701 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
702 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
703 ev_io *w; 1108 ev_io *w;
704 1109
705 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
706 1112
707 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
708 events |= (unsigned char)w->events;
709 1114
710#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
711 if (events)
712 { 1116 {
713 unsigned long arg; 1117 anfd->events = 0;
714 #ifdef EV_FD_TO_WIN32_HANDLE 1118
715 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
716 #else 1120 anfd->events |= (unsigned char)w->events;
717 anfd->handle = _get_osfhandle (fd); 1121
718 #endif 1122 if (o_events != anfd->events)
719 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
720 } 1124 }
721#endif
722 1125
723 { 1126 if (o_reify & EV__IOFDSET)
724 unsigned char o_events = anfd->events;
725 unsigned char o_reify = anfd->reify;
726
727 anfd->reify = 0;
728 anfd->events = events;
729
730 if (o_events != events || o_reify & EV_IOFDSET)
731 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
732 }
733 } 1128 }
734 1129
735 fdchangecnt = 0; 1130 fdchangecnt = 0;
736} 1131}
737 1132
738void inline_size 1133/* something about the given fd changed */
1134inline_size void
739fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
740{ 1136{
741 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
742 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
743 1139
… …
747 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
748 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
749 } 1145 }
750} 1146}
751 1147
752void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
753fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
754{ 1151{
755 ev_io *w; 1152 ev_io *w;
756 1153
757 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
759 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
760 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);
761 } 1158 }
762} 1159}
763 1160
764int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
765fd_valid (int fd) 1163fd_valid (int fd)
766{ 1164{
767#ifdef _WIN32 1165#ifdef _WIN32
768 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
769#else 1167#else
770 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
771#endif 1169#endif
772} 1170}
773 1171
774/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
775static void noinline 1173static void noinline ecb_cold
776fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
777{ 1175{
778 int fd; 1176 int fd;
779 1177
780 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
782 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
783 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
784} 1182}
785 1183
786/* 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 */
787static void noinline 1185static void noinline ecb_cold
788fd_enomem (EV_P) 1186fd_enomem (EV_P)
789{ 1187{
790 int fd; 1188 int fd;
791 1189
792 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
793 if (anfds [fd].events) 1191 if (anfds [fd].events)
794 { 1192 {
795 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
796 return; 1194 break;
797 } 1195 }
798} 1196}
799 1197
800/* 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 */
801static void noinline 1199static void noinline
… …
805 1203
806 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
807 if (anfds [fd].events) 1205 if (anfds [fd].events)
808 { 1206 {
809 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
1208 anfds [fd].emask = 0;
810 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
811 } 1210 }
812} 1211}
813 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
814/*****************************************************************************/ 1227/*****************************************************************************/
815 1228
816/* 1229/*
817 * 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
818 * 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
819 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
820 */ 1233 */
821 1234
822/* 1235/*
… …
831#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
832#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
833#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
834 1247
835/* away from the root */ 1248/* away from the root */
836void inline_speed 1249inline_speed void
837downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
838{ 1251{
839 ANHE he = heap [k]; 1252 ANHE he = heap [k];
840 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
841 1254
… …
881#define HEAP0 1 1294#define HEAP0 1
882#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
883#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
884 1297
885/* away from the root */ 1298/* away from the root */
886void inline_speed 1299inline_speed void
887downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
888{ 1301{
889 ANHE he = heap [k]; 1302 ANHE he = heap [k];
890 1303
891 for (;;) 1304 for (;;)
892 { 1305 {
893 int c = k << 1; 1306 int c = k << 1;
894 1307
895 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
896 break; 1309 break;
897 1310
898 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])
899 ? 1 : 0; 1312 ? 1 : 0;
900 1313
… …
911 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
912} 1325}
913#endif 1326#endif
914 1327
915/* towards the root */ 1328/* towards the root */
916void inline_speed 1329inline_speed void
917upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
918{ 1331{
919 ANHE he = heap [k]; 1332 ANHE he = heap [k];
920 1333
921 for (;;) 1334 for (;;)
… …
932 1345
933 heap [k] = he; 1346 heap [k] = he;
934 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
935} 1348}
936 1349
937void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
938adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
939{ 1353{
940 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)]))
941 upheap (heap, k); 1355 upheap (heap, k);
942 else 1356 else
943 downheap (heap, N, k); 1357 downheap (heap, N, k);
944} 1358}
945 1359
946/* 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 */
947void inline_size 1361inline_size void
948reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
949{ 1363{
950 int i; 1364 int i;
951 1365
952 /* 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 */
… …
955 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
956} 1370}
957 1371
958/*****************************************************************************/ 1372/*****************************************************************************/
959 1373
1374/* associate signal watchers to a signal signal */
960typedef struct 1375typedef struct
961{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
962 WL head; 1381 WL head;
963 EV_ATOMIC_T gotsig;
964} ANSIG; 1382} ANSIG;
965 1383
966static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
967static int signalmax;
968
969static EV_ATOMIC_T gotsig;
970
971void inline_size
972signals_init (ANSIG *base, int count)
973{
974 while (count--)
975 {
976 base->head = 0;
977 base->gotsig = 0;
978
979 ++base;
980 }
981}
982 1385
983/*****************************************************************************/ 1386/*****************************************************************************/
984 1387
985void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
986fd_intern (int fd)
987{
988#ifdef _WIN32
989 unsigned long arg = 1;
990 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991#else
992 fcntl (fd, F_SETFD, FD_CLOEXEC);
993 fcntl (fd, F_SETFL, O_NONBLOCK);
994#endif
995}
996 1389
997static void noinline 1390static void noinline ecb_cold
998evpipe_init (EV_P) 1391evpipe_init (EV_P)
999{ 1392{
1000 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1001 { 1394 {
1002#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1003 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1004 { 1401 {
1005 evpipe [0] = -1; 1402 evpipe [0] = -1;
1006 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1007 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1008 } 1405 }
1009 else 1406 else
1010#endif 1407# endif
1011 { 1408 {
1012 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1013 syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1014 1411
1015 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1016 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1017 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018 } 1415 }
1019 1416
1020 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1021 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1022 } 1419 }
1023} 1420}
1024 1421
1025void inline_size 1422inline_speed void
1026evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027{ 1424{
1028 if (!*flag) 1425 if (!*flag)
1029 { 1426 {
1030 int old_errno = errno; /* save errno because write might clobber it */
1031
1032 *flag = 1; 1427 *flag = 1;
1033 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 {
1034#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1035 if (evfd >= 0) 1471 if (evfd >= 0)
1036 { 1472 {
1037 uint64_t counter = 1; 1473 uint64_t counter;
1038 write (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1039 } 1475 }
1040 else 1476 else
1041#endif 1477#endif
1042 write (evpipe [1], &old_errno, 1); 1478 {
1043
1044 errno = old_errno;
1045 }
1046}
1047
1048static void
1049pipecb (EV_P_ ev_io *iow, int revents)
1050{
1051#if EV_USE_EVENTFD
1052 if (evfd >= 0)
1053 {
1054 uint64_t counter;
1055 read (evfd, &counter, sizeof (uint64_t));
1056 }
1057 else
1058#endif
1059 {
1060 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1061 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)
1062 } 1489 {
1490 sig_pending = 0;
1063 1491
1064 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1065 { 1493 if (expect_false (signals [i].pending))
1066 int signum;
1067 gotsig = 0;
1068
1069 for (signum = signalmax; signum--; )
1070 if (signals [signum].gotsig)
1071 ev_feed_signal_event (EV_A_ signum + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1072 } 1495 }
1496#endif
1073 1497
1074#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1075 if (gotasync) 1499 if (async_pending)
1076 { 1500 {
1077 int i; 1501 async_pending = 0;
1078 gotasync = 0;
1079 1502
1080 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1081 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1082 { 1505 {
1083 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1087#endif 1510#endif
1088} 1511}
1089 1512
1090/*****************************************************************************/ 1513/*****************************************************************************/
1091 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
1092static void 1531static void
1093ev_sighandler (int signum) 1532ev_sighandler (int signum)
1094{ 1533{
1095#if EV_MULTIPLICITY
1096 struct ev_loop *loop = &default_loop_struct;
1097#endif
1098
1099#if _WIN32 1534#ifdef _WIN32
1100 signal (signum, ev_sighandler); 1535 signal (signum, ev_sighandler);
1101#endif 1536#endif
1102 1537
1103 signals [signum - 1].gotsig = 1; 1538 ev_feed_signal (signum);
1104 evpipe_write (EV_A_ &gotsig);
1105} 1539}
1106 1540
1107void noinline 1541void noinline
1108ev_feed_signal_event (EV_P_ int signum) 1542ev_feed_signal_event (EV_P_ int signum)
1109{ 1543{
1110 WL w; 1544 WL w;
1111 1545
1546 if (expect_false (signum <= 0 || signum > EV_NSIG))
1547 return;
1548
1549 --signum;
1550
1112#if EV_MULTIPLICITY 1551#if EV_MULTIPLICITY
1113 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 */
1114#endif 1553 /* or, likely more useful, feeding a signal nobody is waiting for */
1115 1554
1116 --signum; 1555 if (expect_false (signals [signum].loop != EV_A))
1117
1118 if (signum < 0 || signum >= signalmax)
1119 return; 1556 return;
1557#endif
1120 1558
1121 signals [signum].gotsig = 0; 1559 signals [signum].pending = 0;
1122 1560
1123 for (w = signals [signum].head; w; w = w->next) 1561 for (w = signals [signum].head; w; w = w->next)
1124 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1562 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1125} 1563}
1126 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
1127/*****************************************************************************/ 1587/*****************************************************************************/
1128 1588
1589#if EV_CHILD_ENABLE
1129static WL childs [EV_PID_HASHSIZE]; 1590static WL childs [EV_PID_HASHSIZE];
1130
1131#ifndef _WIN32
1132 1591
1133static ev_signal childev; 1592static ev_signal childev;
1134 1593
1135#ifndef WIFCONTINUED 1594#ifndef WIFCONTINUED
1136# define WIFCONTINUED(status) 0 1595# define WIFCONTINUED(status) 0
1137#endif 1596#endif
1138 1597
1139void inline_speed 1598/* handle a single child status event */
1599inline_speed void
1140child_reap (EV_P_ int chain, int pid, int status) 1600child_reap (EV_P_ int chain, int pid, int status)
1141{ 1601{
1142 ev_child *w; 1602 ev_child *w;
1143 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1603 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144 1604
1145 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)
1146 { 1606 {
1147 if ((w->pid == pid || !w->pid) 1607 if ((w->pid == pid || !w->pid)
1148 && (!traced || (w->flags & 1))) 1608 && (!traced || (w->flags & 1)))
1149 { 1609 {
1150 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 */
… …
1157 1617
1158#ifndef WCONTINUED 1618#ifndef WCONTINUED
1159# define WCONTINUED 0 1619# define WCONTINUED 0
1160#endif 1620#endif
1161 1621
1622/* called on sigchld etc., calls waitpid */
1162static void 1623static void
1163childcb (EV_P_ ev_signal *sw, int revents) 1624childcb (EV_P_ ev_signal *sw, int revents)
1164{ 1625{
1165 int pid, status; 1626 int pid, status;
1166 1627
… …
1174 /* 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 */
1175 /* 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 */
1176 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1637 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1177 1638
1178 child_reap (EV_A_ pid, pid, status); 1639 child_reap (EV_A_ pid, pid, status);
1179 if (EV_PID_HASHSIZE > 1) 1640 if ((EV_PID_HASHSIZE) > 1)
1180 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 */
1181} 1642}
1182 1643
1183#endif 1644#endif
1184 1645
1185/*****************************************************************************/ 1646/*****************************************************************************/
1186 1647
1648#if EV_USE_IOCP
1649# include "ev_iocp.c"
1650#endif
1187#if EV_USE_PORT 1651#if EV_USE_PORT
1188# include "ev_port.c" 1652# include "ev_port.c"
1189#endif 1653#endif
1190#if EV_USE_KQUEUE 1654#if EV_USE_KQUEUE
1191# include "ev_kqueue.c" 1655# include "ev_kqueue.c"
… …
1198#endif 1662#endif
1199#if EV_USE_SELECT 1663#if EV_USE_SELECT
1200# include "ev_select.c" 1664# include "ev_select.c"
1201#endif 1665#endif
1202 1666
1203int 1667int ecb_cold
1204ev_version_major (void) 1668ev_version_major (void)
1205{ 1669{
1206 return EV_VERSION_MAJOR; 1670 return EV_VERSION_MAJOR;
1207} 1671}
1208 1672
1209int 1673int ecb_cold
1210ev_version_minor (void) 1674ev_version_minor (void)
1211{ 1675{
1212 return EV_VERSION_MINOR; 1676 return EV_VERSION_MINOR;
1213} 1677}
1214 1678
1215/* 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 */
1216int inline_size 1680int inline_size ecb_cold
1217enable_secure (void) 1681enable_secure (void)
1218{ 1682{
1219#ifdef _WIN32 1683#ifdef _WIN32
1220 return 0; 1684 return 0;
1221#else 1685#else
1222 return getuid () != geteuid () 1686 return getuid () != geteuid ()
1223 || getgid () != getegid (); 1687 || getgid () != getegid ();
1224#endif 1688#endif
1225} 1689}
1226 1690
1227unsigned int 1691unsigned int ecb_cold
1228ev_supported_backends (void) 1692ev_supported_backends (void)
1229{ 1693{
1230 unsigned int flags = 0; 1694 unsigned int flags = 0;
1231 1695
1232 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1696 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1236 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1700 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1237 1701
1238 return flags; 1702 return flags;
1239} 1703}
1240 1704
1241unsigned int 1705unsigned int ecb_cold
1242ev_recommended_backends (void) 1706ev_recommended_backends (void)
1243{ 1707{
1244 unsigned int flags = ev_supported_backends (); 1708 unsigned int flags = ev_supported_backends ();
1245 1709
1246#ifndef __NetBSD__ 1710#ifndef __NetBSD__
1247 /* kqueue is borked on everything but netbsd apparently */ 1711 /* kqueue is borked on everything but netbsd apparently */
1248 /* 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 */
1249 flags &= ~EVBACKEND_KQUEUE; 1713 flags &= ~EVBACKEND_KQUEUE;
1250#endif 1714#endif
1251#ifdef __APPLE__ 1715#ifdef __APPLE__
1252 // flags &= ~EVBACKEND_KQUEUE; for documentation 1716 /* only select works correctly on that "unix-certified" platform */
1253 flags &= ~EVBACKEND_POLL; 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) */
1254#endif 1722#endif
1255 1723
1256 return flags; 1724 return flags;
1257} 1725}
1258 1726
1259unsigned int 1727unsigned int ecb_cold
1260ev_embeddable_backends (void) 1728ev_embeddable_backends (void)
1261{ 1729{
1262 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1730 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1263 1731
1264 /* 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 */
1265 /* please fix it and tell me how to detect the fix */ 1733 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1266 flags &= ~EVBACKEND_EPOLL; 1734 flags &= ~EVBACKEND_EPOLL;
1267 1735
1268 return flags; 1736 return flags;
1269} 1737}
1270 1738
1271unsigned int 1739unsigned int
1272ev_backend (EV_P) 1740ev_backend (EV_P)
1273{ 1741{
1274 return backend; 1742 return backend;
1275} 1743}
1276 1744
1745#if EV_FEATURE_API
1277unsigned int 1746unsigned int
1278ev_loop_count (EV_P) 1747ev_iteration (EV_P)
1279{ 1748{
1280 return loop_count; 1749 return loop_count;
1750}
1751
1752unsigned int
1753ev_depth (EV_P)
1754{
1755 return loop_depth;
1281} 1756}
1282 1757
1283void 1758void
1284ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1759ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1760{
… …
1290ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1765ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1766{
1292 timeout_blocktime = interval; 1767 timeout_blocktime = interval;
1293} 1768}
1294 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 */
1295static void noinline 1797static void noinline ecb_cold
1296loop_init (EV_P_ unsigned int flags) 1798loop_init (EV_P_ unsigned int flags)
1297{ 1799{
1298 if (!backend) 1800 if (!backend)
1299 { 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
1300#if EV_USE_MONOTONIC 1814#if EV_USE_MONOTONIC
1815 if (!have_monotonic)
1301 { 1816 {
1302 struct timespec ts; 1817 struct timespec ts;
1818
1303 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1819 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304 have_monotonic = 1; 1820 have_monotonic = 1;
1305 } 1821 }
1306#endif
1307
1308 ev_rt_now = ev_time ();
1309 mn_now = get_clock ();
1310 now_floor = mn_now;
1311 rtmn_diff = ev_rt_now - mn_now;
1312
1313 io_blocktime = 0.;
1314 timeout_blocktime = 0.;
1315 backend = 0;
1316 backend_fd = -1;
1317 gotasync = 0;
1318#if EV_USE_INOTIFY
1319 fs_fd = -2;
1320#endif 1822#endif
1321 1823
1322 /* pid check not overridable via env */ 1824 /* pid check not overridable via env */
1323#ifndef _WIN32 1825#ifndef _WIN32
1324 if (flags & EVFLAG_FORKCHECK) 1826 if (flags & EVFLAG_FORKCHECK)
… …
1328 if (!(flags & EVFLAG_NOENV) 1830 if (!(flags & EVFLAG_NOENV)
1329 && !enable_secure () 1831 && !enable_secure ()
1330 && getenv ("LIBEV_FLAGS")) 1832 && getenv ("LIBEV_FLAGS"))
1331 flags = atoi (getenv ("LIBEV_FLAGS")); 1833 flags = atoi (getenv ("LIBEV_FLAGS"));
1332 1834
1333 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))
1334 flags |= ev_recommended_backends (); 1861 flags |= ev_recommended_backends ();
1335 1862
1863#if EV_USE_IOCP
1864 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1865#endif
1336#if EV_USE_PORT 1866#if EV_USE_PORT
1337 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1867 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1338#endif 1868#endif
1339#if EV_USE_KQUEUE 1869#if EV_USE_KQUEUE
1340 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1870 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1347#endif 1877#endif
1348#if EV_USE_SELECT 1878#if EV_USE_SELECT
1349 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1879 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350#endif 1880#endif
1351 1881
1882 ev_prepare_init (&pending_w, pendingcb);
1883
1884#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1352 ev_init (&pipeev, pipecb); 1885 ev_init (&pipe_w, pipecb);
1353 ev_set_priority (&pipeev, EV_MAXPRI); 1886 ev_set_priority (&pipe_w, EV_MAXPRI);
1887#endif
1354 } 1888 }
1355} 1889}
1356 1890
1357static void noinline 1891/* free up a loop structure */
1892void ecb_cold
1358loop_destroy (EV_P) 1893ev_loop_destroy (EV_P)
1359{ 1894{
1360 int i; 1895 int i;
1361 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
1362 if (ev_is_active (&pipeev)) 1920 if (ev_is_active (&pipe_w))
1363 { 1921 {
1364 ev_ref (EV_A); /* signal watcher */ 1922 /*ev_ref (EV_A);*/
1365 ev_io_stop (EV_A_ &pipeev); 1923 /*ev_io_stop (EV_A_ &pipe_w);*/
1366 1924
1367#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1368 if (evfd >= 0) 1926 if (evfd >= 0)
1369 close (evfd); 1927 close (evfd);
1370#endif 1928#endif
1371 1929
1372 if (evpipe [0] >= 0) 1930 if (evpipe [0] >= 0)
1373 { 1931 {
1374 close (evpipe [0]); 1932 EV_WIN32_CLOSE_FD (evpipe [0]);
1375 close (evpipe [1]); 1933 EV_WIN32_CLOSE_FD (evpipe [1]);
1376 } 1934 }
1377 } 1935 }
1936
1937#if EV_USE_SIGNALFD
1938 if (ev_is_active (&sigfd_w))
1939 close (sigfd);
1940#endif
1378 1941
1379#if EV_USE_INOTIFY 1942#if EV_USE_INOTIFY
1380 if (fs_fd >= 0) 1943 if (fs_fd >= 0)
1381 close (fs_fd); 1944 close (fs_fd);
1382#endif 1945#endif
1383 1946
1384 if (backend_fd >= 0) 1947 if (backend_fd >= 0)
1385 close (backend_fd); 1948 close (backend_fd);
1386 1949
1950#if EV_USE_IOCP
1951 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1952#endif
1387#if EV_USE_PORT 1953#if EV_USE_PORT
1388 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1954 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1389#endif 1955#endif
1390#if EV_USE_KQUEUE 1956#if EV_USE_KQUEUE
1391 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1957 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1406#if EV_IDLE_ENABLE 1972#if EV_IDLE_ENABLE
1407 array_free (idle, [i]); 1973 array_free (idle, [i]);
1408#endif 1974#endif
1409 } 1975 }
1410 1976
1411 ev_free (anfds); anfdmax = 0; 1977 ev_free (anfds); anfds = 0; anfdmax = 0;
1412 1978
1413 /* 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);
1414 array_free (fdchange, EMPTY); 1981 array_free (fdchange, EMPTY);
1415 array_free (timer, EMPTY); 1982 array_free (timer, EMPTY);
1416#if EV_PERIODIC_ENABLE 1983#if EV_PERIODIC_ENABLE
1417 array_free (periodic, EMPTY); 1984 array_free (periodic, EMPTY);
1418#endif 1985#endif
1419#if EV_FORK_ENABLE 1986#if EV_FORK_ENABLE
1420 array_free (fork, EMPTY); 1987 array_free (fork, EMPTY);
1421#endif 1988#endif
1989#if EV_CLEANUP_ENABLE
1990 array_free (cleanup, EMPTY);
1991#endif
1422 array_free (prepare, EMPTY); 1992 array_free (prepare, EMPTY);
1423 array_free (check, EMPTY); 1993 array_free (check, EMPTY);
1424#if EV_ASYNC_ENABLE 1994#if EV_ASYNC_ENABLE
1425 array_free (async, EMPTY); 1995 array_free (async, EMPTY);
1426#endif 1996#endif
1427 1997
1428 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
1429} 2008}
1430 2009
1431#if EV_USE_INOTIFY 2010#if EV_USE_INOTIFY
1432void inline_size infy_fork (EV_P); 2011inline_size void infy_fork (EV_P);
1433#endif 2012#endif
1434 2013
1435void inline_size 2014inline_size void
1436loop_fork (EV_P) 2015loop_fork (EV_P)
1437{ 2016{
1438#if EV_USE_PORT 2017#if EV_USE_PORT
1439 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2018 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440#endif 2019#endif
… …
1446#endif 2025#endif
1447#if EV_USE_INOTIFY 2026#if EV_USE_INOTIFY
1448 infy_fork (EV_A); 2027 infy_fork (EV_A);
1449#endif 2028#endif
1450 2029
1451 if (ev_is_active (&pipeev)) 2030 if (ev_is_active (&pipe_w))
1452 { 2031 {
1453 /* this "locks" the handlers against writing to the pipe */ 2032 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1454 /* while we modify the fd vars */
1455 gotsig = 1;
1456#if EV_ASYNC_ENABLE
1457 gotasync = 1;
1458#endif
1459 2033
1460 ev_ref (EV_A); 2034 ev_ref (EV_A);
1461 ev_io_stop (EV_A_ &pipeev); 2035 ev_io_stop (EV_A_ &pipe_w);
1462 2036
1463#if EV_USE_EVENTFD 2037#if EV_USE_EVENTFD
1464 if (evfd >= 0) 2038 if (evfd >= 0)
1465 close (evfd); 2039 close (evfd);
1466#endif 2040#endif
1467 2041
1468 if (evpipe [0] >= 0) 2042 if (evpipe [0] >= 0)
1469 { 2043 {
1470 close (evpipe [0]); 2044 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 2045 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 2046 }
1473 2047
2048#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1474 evpipe_init (EV_A); 2049 evpipe_init (EV_A);
1475 /* now iterate over everything, in case we missed something */ 2050 /* now iterate over everything, in case we missed something */
1476 pipecb (EV_A_ &pipeev, EV_READ); 2051 pipecb (EV_A_ &pipe_w, EV_READ);
2052#endif
1477 } 2053 }
1478 2054
1479 postfork = 0; 2055 postfork = 0;
1480} 2056}
1481 2057
1482#if EV_MULTIPLICITY 2058#if EV_MULTIPLICITY
1483 2059
1484struct ev_loop * 2060struct ev_loop * ecb_cold
1485ev_loop_new (unsigned int flags) 2061ev_loop_new (unsigned int flags)
1486{ 2062{
1487 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));
1488 2064
1489 memset (loop, 0, sizeof (struct ev_loop)); 2065 memset (EV_A, 0, sizeof (struct ev_loop));
1490
1491 loop_init (EV_A_ flags); 2066 loop_init (EV_A_ flags);
1492 2067
1493 if (ev_backend (EV_A)) 2068 if (ev_backend (EV_A))
1494 return loop; 2069 return EV_A;
1495 2070
2071 ev_free (EV_A);
1496 return 0; 2072 return 0;
1497} 2073}
1498 2074
1499void 2075#endif /* multiplicity */
1500ev_loop_destroy (EV_P)
1501{
1502 loop_destroy (EV_A);
1503 ev_free (loop);
1504}
1505
1506void
1507ev_loop_fork (EV_P)
1508{
1509 postfork = 1; /* must be in line with ev_default_fork */
1510}
1511 2076
1512#if EV_VERIFY 2077#if EV_VERIFY
1513void noinline 2078static void noinline ecb_cold
1514verify_watcher (EV_P_ W w) 2079verify_watcher (EV_P_ W w)
1515{ 2080{
1516 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2081 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1517 2082
1518 if (w->pending) 2083 if (w->pending)
1519 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));
1520} 2085}
1521 2086
1522static void noinline 2087static void noinline ecb_cold
1523verify_heap (EV_P_ ANHE *heap, int N) 2088verify_heap (EV_P_ ANHE *heap, int N)
1524{ 2089{
1525 int i; 2090 int i;
1526 2091
1527 for (i = HEAP0; i < N + HEAP0; ++i) 2092 for (i = HEAP0; i < N + HEAP0; ++i)
1528 { 2093 {
1529 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));
1530 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])));
1531 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]))));
1532 2097
1533 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2098 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1534 } 2099 }
1535} 2100}
1536 2101
1537static void noinline 2102static void noinline ecb_cold
1538array_verify (EV_P_ W *ws, int cnt) 2103array_verify (EV_P_ W *ws, int cnt)
1539{ 2104{
1540 while (cnt--) 2105 while (cnt--)
1541 { 2106 {
1542 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2107 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1543 verify_watcher (EV_A_ ws [cnt]); 2108 verify_watcher (EV_A_ ws [cnt]);
1544 } 2109 }
1545} 2110}
1546#endif 2111#endif
1547 2112
1548void 2113#if EV_FEATURE_API
2114void ecb_cold
1549ev_loop_verify (EV_P) 2115ev_verify (EV_P)
1550{ 2116{
1551#if EV_VERIFY 2117#if EV_VERIFY
1552 int i; 2118 int i;
1553 WL w; 2119 WL w;
1554 2120
1555 assert (activecnt >= -1); 2121 assert (activecnt >= -1);
1556 2122
1557 assert (fdchangemax >= fdchangecnt); 2123 assert (fdchangemax >= fdchangecnt);
1558 for (i = 0; i < fdchangecnt; ++i) 2124 for (i = 0; i < fdchangecnt; ++i)
1559 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2125 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1560 2126
1561 assert (anfdmax >= 0); 2127 assert (anfdmax >= 0);
1562 for (i = 0; i < anfdmax; ++i) 2128 for (i = 0; i < anfdmax; ++i)
1563 for (w = anfds [i].head; w; w = w->next) 2129 for (w = anfds [i].head; w; w = w->next)
1564 { 2130 {
1565 verify_watcher (EV_A_ (W)w); 2131 verify_watcher (EV_A_ (W)w);
1566 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2132 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1567 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));
1568 } 2134 }
1569 2135
1570 assert (timermax >= timercnt); 2136 assert (timermax >= timercnt);
1571 verify_heap (EV_A_ timers, timercnt); 2137 verify_heap (EV_A_ timers, timercnt);
1572 2138
… …
1588#if EV_FORK_ENABLE 2154#if EV_FORK_ENABLE
1589 assert (forkmax >= forkcnt); 2155 assert (forkmax >= forkcnt);
1590 array_verify (EV_A_ (W *)forks, forkcnt); 2156 array_verify (EV_A_ (W *)forks, forkcnt);
1591#endif 2157#endif
1592 2158
2159#if EV_CLEANUP_ENABLE
2160 assert (cleanupmax >= cleanupcnt);
2161 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2162#endif
2163
1593#if EV_ASYNC_ENABLE 2164#if EV_ASYNC_ENABLE
1594 assert (asyncmax >= asynccnt); 2165 assert (asyncmax >= asynccnt);
1595 array_verify (EV_A_ (W *)asyncs, asynccnt); 2166 array_verify (EV_A_ (W *)asyncs, asynccnt);
1596#endif 2167#endif
1597 2168
2169#if EV_PREPARE_ENABLE
1598 assert (preparemax >= preparecnt); 2170 assert (preparemax >= preparecnt);
1599 array_verify (EV_A_ (W *)prepares, preparecnt); 2171 array_verify (EV_A_ (W *)prepares, preparecnt);
2172#endif
1600 2173
2174#if EV_CHECK_ENABLE
1601 assert (checkmax >= checkcnt); 2175 assert (checkmax >= checkcnt);
1602 array_verify (EV_A_ (W *)checks, checkcnt); 2176 array_verify (EV_A_ (W *)checks, checkcnt);
2177#endif
1603 2178
1604# if 0 2179# if 0
2180#if EV_CHILD_ENABLE
1605 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)
1606 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2182 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2183#endif
1607# endif 2184# endif
1608#endif 2185#endif
1609} 2186}
1610 2187#endif
1611#endif /* multiplicity */
1612 2188
1613#if EV_MULTIPLICITY 2189#if EV_MULTIPLICITY
1614struct ev_loop * 2190struct ev_loop * ecb_cold
1615ev_default_loop_init (unsigned int flags)
1616#else 2191#else
1617int 2192int
2193#endif
1618ev_default_loop (unsigned int flags) 2194ev_default_loop (unsigned int flags)
1619#endif
1620{ 2195{
1621 if (!ev_default_loop_ptr) 2196 if (!ev_default_loop_ptr)
1622 { 2197 {
1623#if EV_MULTIPLICITY 2198#if EV_MULTIPLICITY
1624 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2199 EV_P = ev_default_loop_ptr = &default_loop_struct;
1625#else 2200#else
1626 ev_default_loop_ptr = 1; 2201 ev_default_loop_ptr = 1;
1627#endif 2202#endif
1628 2203
1629 loop_init (EV_A_ flags); 2204 loop_init (EV_A_ flags);
1630 2205
1631 if (ev_backend (EV_A)) 2206 if (ev_backend (EV_A))
1632 { 2207 {
1633#ifndef _WIN32 2208#if EV_CHILD_ENABLE
1634 ev_signal_init (&childev, childcb, SIGCHLD); 2209 ev_signal_init (&childev, childcb, SIGCHLD);
1635 ev_set_priority (&childev, EV_MAXPRI); 2210 ev_set_priority (&childev, EV_MAXPRI);
1636 ev_signal_start (EV_A_ &childev); 2211 ev_signal_start (EV_A_ &childev);
1637 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2212 ev_unref (EV_A); /* child watcher should not keep loop alive */
1638#endif 2213#endif
… …
1643 2218
1644 return ev_default_loop_ptr; 2219 return ev_default_loop_ptr;
1645} 2220}
1646 2221
1647void 2222void
1648ev_default_destroy (void) 2223ev_loop_fork (EV_P)
1649{ 2224{
1650#if EV_MULTIPLICITY
1651 struct ev_loop *loop = ev_default_loop_ptr;
1652#endif
1653
1654#ifndef _WIN32
1655 ev_ref (EV_A); /* child watcher */
1656 ev_signal_stop (EV_A_ &childev);
1657#endif
1658
1659 loop_destroy (EV_A);
1660}
1661
1662void
1663ev_default_fork (void)
1664{
1665#if EV_MULTIPLICITY
1666 struct ev_loop *loop = ev_default_loop_ptr;
1667#endif
1668
1669 if (backend)
1670 postfork = 1; /* must be in line with ev_loop_fork */ 2225 postfork = 1; /* must be in line with ev_default_fork */
1671} 2226}
1672 2227
1673/*****************************************************************************/ 2228/*****************************************************************************/
1674 2229
1675void 2230void
1676ev_invoke (EV_P_ void *w, int revents) 2231ev_invoke (EV_P_ void *w, int revents)
1677{ 2232{
1678 EV_CB_INVOKE ((W)w, revents); 2233 EV_CB_INVOKE ((W)w, revents);
1679} 2234}
1680 2235
1681void inline_speed 2236unsigned int
1682call_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)
1683{ 2250{
1684 int pri; 2251 int pri;
1685 2252
1686 for (pri = NUMPRI; pri--; ) 2253 for (pri = NUMPRI; pri--; )
1687 while (pendingcnt [pri]) 2254 while (pendingcnt [pri])
1688 { 2255 {
1689 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2256 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1690 2257
1691 if (expect_true (p->w))
1692 {
1693 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1694
1695 p->w->pending = 0; 2258 p->w->pending = 0;
1696 EV_CB_INVOKE (p->w, p->events); 2259 EV_CB_INVOKE (p->w, p->events);
1697 EV_FREQUENT_CHECK; 2260 EV_FREQUENT_CHECK;
1698 }
1699 } 2261 }
1700} 2262}
1701 2263
1702#if EV_IDLE_ENABLE 2264#if EV_IDLE_ENABLE
1703void inline_size 2265/* make idle watchers pending. this handles the "call-idle */
2266/* only when higher priorities are idle" logic */
2267inline_size void
1704idle_reify (EV_P) 2268idle_reify (EV_P)
1705{ 2269{
1706 if (expect_false (idleall)) 2270 if (expect_false (idleall))
1707 { 2271 {
1708 int pri; 2272 int pri;
… …
1720 } 2284 }
1721 } 2285 }
1722} 2286}
1723#endif 2287#endif
1724 2288
1725void inline_size 2289/* make timers pending */
2290inline_size void
1726timers_reify (EV_P) 2291timers_reify (EV_P)
1727{ 2292{
1728 EV_FREQUENT_CHECK; 2293 EV_FREQUENT_CHECK;
1729 2294
1730 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2295 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1731 { 2296 {
1732 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2297 do
1733
1734 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1735
1736 /* first reschedule or stop timer */
1737 if (w->repeat)
1738 { 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 {
1739 ev_at (w) += w->repeat; 2306 ev_at (w) += w->repeat;
1740 if (ev_at (w) < mn_now) 2307 if (ev_at (w) < mn_now)
1741 ev_at (w) = mn_now; 2308 ev_at (w) = mn_now;
1742 2309
1743 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.));
1744 2311
1745 ANHE_at_cache (timers [HEAP0]); 2312 ANHE_at_cache (timers [HEAP0]);
1746 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);
1747 } 2320 }
1748 else 2321 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1749 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1750 2322
1751 EV_FREQUENT_CHECK; 2323 feed_reverse_done (EV_A_ EV_TIMER);
1752 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1753 } 2324 }
1754} 2325}
1755 2326
1756#if EV_PERIODIC_ENABLE 2327#if EV_PERIODIC_ENABLE
1757void 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
1758periodics_reify (EV_P) 2355periodics_reify (EV_P)
1759{ 2356{
1760 EV_FREQUENT_CHECK; 2357 EV_FREQUENT_CHECK;
1761 2358
1762 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2359 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1763 { 2360 {
1764 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2361 int feed_count = 0;
1765 2362
1766 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2363 do
1767
1768 /* first reschedule or stop timer */
1769 if (w->reschedule_cb)
1770 { 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 {
1771 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2372 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1772 2373
1773 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));
1774 2375
1775 ANHE_at_cache (periodics [HEAP0]); 2376 ANHE_at_cache (periodics [HEAP0]);
1776 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);
1777 } 2390 }
1778 else if (w->interval) 2391 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1779 {
1780 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1781 /* if next trigger time is not sufficiently in the future, put it there */
1782 /* this might happen because of floating point inexactness */
1783 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1784 {
1785 ev_at (w) += w->interval;
1786 2392
1787 /* if interval is unreasonably low we might still have a time in the past */
1788 /* so correct this. this will make the periodic very inexact, but the user */
1789 /* has effectively asked to get triggered more often than possible */
1790 if (ev_at (w) < ev_rt_now)
1791 ev_at (w) = ev_rt_now;
1792 }
1793
1794 ANHE_at_cache (periodics [HEAP0]);
1795 downheap (periodics, periodiccnt, HEAP0);
1796 }
1797 else
1798 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1799
1800 EV_FREQUENT_CHECK;
1801 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2393 feed_reverse_done (EV_A_ EV_PERIODIC);
1802 } 2394 }
1803} 2395}
1804 2396
2397/* simply recalculate all periodics */
2398/* TODO: maybe ensure that at least one event happens when jumping forward? */
1805static void noinline 2399static void noinline ecb_cold
1806periodics_reschedule (EV_P) 2400periodics_reschedule (EV_P)
1807{ 2401{
1808 int i; 2402 int i;
1809 2403
1810 /* adjust periodics after time jump */ 2404 /* adjust periodics after time jump */
… …
1813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2407 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1814 2408
1815 if (w->reschedule_cb) 2409 if (w->reschedule_cb)
1816 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2410 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1817 else if (w->interval) 2411 else if (w->interval)
1818 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2412 periodic_recalc (EV_A_ w);
1819 2413
1820 ANHE_at_cache (periodics [i]); 2414 ANHE_at_cache (periodics [i]);
1821 } 2415 }
1822 2416
1823 reheap (periodics, periodiccnt); 2417 reheap (periodics, periodiccnt);
1824} 2418}
1825#endif 2419#endif
1826 2420
1827void 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
1828time_update (EV_P_ ev_tstamp max_block) 2438time_update (EV_P_ ev_tstamp max_block)
1829{ 2439{
1830 int i;
1831
1832#if EV_USE_MONOTONIC 2440#if EV_USE_MONOTONIC
1833 if (expect_true (have_monotonic)) 2441 if (expect_true (have_monotonic))
1834 { 2442 {
2443 int i;
1835 ev_tstamp odiff = rtmn_diff; 2444 ev_tstamp odiff = rtmn_diff;
1836 2445
1837 mn_now = get_clock (); 2446 mn_now = get_clock ();
1838 2447
1839 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2448 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1855 * 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
1856 * in the unlikely event of having been preempted here. 2465 * in the unlikely event of having been preempted here.
1857 */ 2466 */
1858 for (i = 4; --i; ) 2467 for (i = 4; --i; )
1859 { 2468 {
2469 ev_tstamp diff;
1860 rtmn_diff = ev_rt_now - mn_now; 2470 rtmn_diff = ev_rt_now - mn_now;
1861 2471
2472 diff = odiff - rtmn_diff;
2473
1862 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2474 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1863 return; /* all is well */ 2475 return; /* all is well */
1864 2476
1865 ev_rt_now = ev_time (); 2477 ev_rt_now = ev_time ();
1866 mn_now = get_clock (); 2478 mn_now = get_clock ();
1867 now_floor = mn_now; 2479 now_floor = mn_now;
1868 } 2480 }
1869 2481
2482 /* no timer adjustment, as the monotonic clock doesn't jump */
2483 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870# if EV_PERIODIC_ENABLE 2484# if EV_PERIODIC_ENABLE
1871 periodics_reschedule (EV_A); 2485 periodics_reschedule (EV_A);
1872# endif 2486# endif
1873 /* no timer adjustment, as the monotonic clock doesn't jump */
1874 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1875 } 2487 }
1876 else 2488 else
1877#endif 2489#endif
1878 { 2490 {
1879 ev_rt_now = ev_time (); 2491 ev_rt_now = ev_time ();
1880 2492
1881 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))
1882 { 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);
1883#if EV_PERIODIC_ENABLE 2497#if EV_PERIODIC_ENABLE
1884 periodics_reschedule (EV_A); 2498 periodics_reschedule (EV_A);
1885#endif 2499#endif
1886 /* adjust timers. this is easy, as the offset is the same for all of them */
1887 for (i = 0; i < timercnt; ++i)
1888 {
1889 ANHE *he = timers + i + HEAP0;
1890 ANHE_w (*he)->at += ev_rt_now - mn_now;
1891 ANHE_at_cache (*he);
1892 }
1893 } 2500 }
1894 2501
1895 mn_now = ev_rt_now; 2502 mn_now = ev_rt_now;
1896 } 2503 }
1897} 2504}
1898 2505
1899void 2506void
1900ev_ref (EV_P)
1901{
1902 ++activecnt;
1903}
1904
1905void
1906ev_unref (EV_P)
1907{
1908 --activecnt;
1909}
1910
1911static int loop_done;
1912
1913void
1914ev_loop (EV_P_ int flags) 2507ev_run (EV_P_ int flags)
1915{ 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
1916 loop_done = EVUNLOOP_CANCEL; 2515 loop_done = EVBREAK_CANCEL;
1917 2516
1918 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 */
1919 2518
1920 do 2519 do
1921 { 2520 {
1922#if EV_VERIFY >= 2 2521#if EV_VERIFY >= 2
1923 ev_loop_verify (EV_A); 2522 ev_verify (EV_A);
1924#endif 2523#endif
1925 2524
1926#ifndef _WIN32 2525#ifndef _WIN32
1927 if (expect_false (curpid)) /* penalise the forking check even more */ 2526 if (expect_false (curpid)) /* penalise the forking check even more */
1928 if (expect_false (getpid () != curpid)) 2527 if (expect_false (getpid () != curpid))
… …
1936 /* we might have forked, so queue fork handlers */ 2535 /* we might have forked, so queue fork handlers */
1937 if (expect_false (postfork)) 2536 if (expect_false (postfork))
1938 if (forkcnt) 2537 if (forkcnt)
1939 { 2538 {
1940 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2539 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1941 call_pending (EV_A); 2540 EV_INVOKE_PENDING;
1942 } 2541 }
1943#endif 2542#endif
1944 2543
2544#if EV_PREPARE_ENABLE
1945 /* queue prepare watchers (and execute them) */ 2545 /* queue prepare watchers (and execute them) */
1946 if (expect_false (preparecnt)) 2546 if (expect_false (preparecnt))
1947 { 2547 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2548 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 2549 EV_INVOKE_PENDING;
1950 } 2550 }
2551#endif
1951 2552
1952 if (expect_false (!activecnt)) 2553 if (expect_false (loop_done))
1953 break; 2554 break;
1954 2555
1955 /* we might have forked, so reify kernel state if necessary */ 2556 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 2557 if (expect_false (postfork))
1957 loop_fork (EV_A); 2558 loop_fork (EV_A);
… …
1962 /* calculate blocking time */ 2563 /* calculate blocking time */
1963 { 2564 {
1964 ev_tstamp waittime = 0.; 2565 ev_tstamp waittime = 0.;
1965 ev_tstamp sleeptime = 0.; 2566 ev_tstamp sleeptime = 0.;
1966 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
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2577 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1968 { 2578 {
1969 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100);
1971
1972 waittime = MAX_BLOCKTIME; 2579 waittime = MAX_BLOCKTIME;
1973 2580
1974 if (timercnt) 2581 if (timercnt)
1975 { 2582 {
1976 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2583 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1977 if (waittime > to) waittime = to; 2584 if (waittime > to) waittime = to;
1978 } 2585 }
1979 2586
1980#if EV_PERIODIC_ENABLE 2587#if EV_PERIODIC_ENABLE
1981 if (periodiccnt) 2588 if (periodiccnt)
1982 { 2589 {
1983 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2590 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1984 if (waittime > to) waittime = to; 2591 if (waittime > to) waittime = to;
1985 } 2592 }
1986#endif 2593#endif
1987 2594
2595 /* don't let timeouts decrease the waittime below timeout_blocktime */
1988 if (expect_false (waittime < timeout_blocktime)) 2596 if (expect_false (waittime < timeout_blocktime))
1989 waittime = timeout_blocktime; 2597 waittime = timeout_blocktime;
1990 2598
1991 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;
1992 2603
2604 /* extra check because io_blocktime is commonly 0 */
1993 if (expect_true (sleeptime > io_blocktime)) 2605 if (expect_false (io_blocktime))
1994 sleeptime = io_blocktime;
1995
1996 if (sleeptime)
1997 { 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 {
1998 ev_sleep (sleeptime); 2614 ev_sleep (sleeptime);
1999 waittime -= sleeptime; 2615 waittime -= sleeptime;
2616 }
2000 } 2617 }
2001 } 2618 }
2002 2619
2620#if EV_FEATURE_API
2003 ++loop_count; 2621 ++loop_count;
2622#endif
2623 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2004 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
2005 2635
2006 /* update ev_rt_now, do magic */ 2636 /* update ev_rt_now, do magic */
2007 time_update (EV_A_ waittime + sleeptime); 2637 time_update (EV_A_ waittime + sleeptime);
2008 } 2638 }
2009 2639
… …
2016#if EV_IDLE_ENABLE 2646#if EV_IDLE_ENABLE
2017 /* queue idle watchers unless other events are pending */ 2647 /* queue idle watchers unless other events are pending */
2018 idle_reify (EV_A); 2648 idle_reify (EV_A);
2019#endif 2649#endif
2020 2650
2651#if EV_CHECK_ENABLE
2021 /* queue check watchers, to be executed first */ 2652 /* queue check watchers, to be executed first */
2022 if (expect_false (checkcnt)) 2653 if (expect_false (checkcnt))
2023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2654 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2655#endif
2024 2656
2025 call_pending (EV_A); 2657 EV_INVOKE_PENDING;
2026 } 2658 }
2027 while (expect_true ( 2659 while (expect_true (
2028 activecnt 2660 activecnt
2029 && !loop_done 2661 && !loop_done
2030 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2662 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2031 )); 2663 ));
2032 2664
2033 if (loop_done == EVUNLOOP_ONE) 2665 if (loop_done == EVBREAK_ONE)
2034 loop_done = EVUNLOOP_CANCEL; 2666 loop_done = EVBREAK_CANCEL;
2667
2668#if EV_FEATURE_API
2669 --loop_depth;
2670#endif
2035} 2671}
2036 2672
2037void 2673void
2038ev_unloop (EV_P_ int how) 2674ev_break (EV_P_ int how)
2039{ 2675{
2040 loop_done = how; 2676 loop_done = how;
2041} 2677}
2042 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
2043/*****************************************************************************/ 2716/*****************************************************************************/
2717/* singly-linked list management, used when the expected list length is short */
2044 2718
2045void inline_size 2719inline_size void
2046wlist_add (WL *head, WL elem) 2720wlist_add (WL *head, WL elem)
2047{ 2721{
2048 elem->next = *head; 2722 elem->next = *head;
2049 *head = elem; 2723 *head = elem;
2050} 2724}
2051 2725
2052void inline_size 2726inline_size void
2053wlist_del (WL *head, WL elem) 2727wlist_del (WL *head, WL elem)
2054{ 2728{
2055 while (*head) 2729 while (*head)
2056 { 2730 {
2057 if (*head == elem) 2731 if (expect_true (*head == elem))
2058 { 2732 {
2059 *head = elem->next; 2733 *head = elem->next;
2060 return; 2734 break;
2061 } 2735 }
2062 2736
2063 head = &(*head)->next; 2737 head = &(*head)->next;
2064 } 2738 }
2065} 2739}
2066 2740
2067void inline_speed 2741/* internal, faster, version of ev_clear_pending */
2742inline_speed void
2068clear_pending (EV_P_ W w) 2743clear_pending (EV_P_ W w)
2069{ 2744{
2070 if (w->pending) 2745 if (w->pending)
2071 { 2746 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2747 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2073 w->pending = 0; 2748 w->pending = 0;
2074 } 2749 }
2075} 2750}
2076 2751
2077int 2752int
… …
2081 int pending = w_->pending; 2756 int pending = w_->pending;
2082 2757
2083 if (expect_true (pending)) 2758 if (expect_true (pending))
2084 { 2759 {
2085 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2760 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2761 p->w = (W)&pending_w;
2086 w_->pending = 0; 2762 w_->pending = 0;
2087 p->w = 0;
2088 return p->events; 2763 return p->events;
2089 } 2764 }
2090 else 2765 else
2091 return 0; 2766 return 0;
2092} 2767}
2093 2768
2094void inline_size 2769inline_size void
2095pri_adjust (EV_P_ W w) 2770pri_adjust (EV_P_ W w)
2096{ 2771{
2097 int pri = w->priority; 2772 int pri = ev_priority (w);
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2773 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2774 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 2775 ev_set_priority (w, pri);
2101} 2776}
2102 2777
2103void inline_speed 2778inline_speed void
2104ev_start (EV_P_ W w, int active) 2779ev_start (EV_P_ W w, int active)
2105{ 2780{
2106 pri_adjust (EV_A_ w); 2781 pri_adjust (EV_A_ w);
2107 w->active = active; 2782 w->active = active;
2108 ev_ref (EV_A); 2783 ev_ref (EV_A);
2109} 2784}
2110 2785
2111void inline_size 2786inline_size void
2112ev_stop (EV_P_ W w) 2787ev_stop (EV_P_ W w)
2113{ 2788{
2114 ev_unref (EV_A); 2789 ev_unref (EV_A);
2115 w->active = 0; 2790 w->active = 0;
2116} 2791}
… …
2123 int fd = w->fd; 2798 int fd = w->fd;
2124 2799
2125 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2126 return; 2801 return;
2127 2802
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 2803 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2804 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2129 2805
2130 EV_FREQUENT_CHECK; 2806 EV_FREQUENT_CHECK;
2131 2807
2132 ev_start (EV_A_ (W)w, 1); 2808 ev_start (EV_A_ (W)w, 1);
2133 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2809 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2134 wlist_add (&anfds[fd].head, (WL)w); 2810 wlist_add (&anfds[fd].head, (WL)w);
2135 2811
2136 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2812 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2137 w->events &= ~EV_IOFDSET; 2813 w->events &= ~EV__IOFDSET;
2138 2814
2139 EV_FREQUENT_CHECK; 2815 EV_FREQUENT_CHECK;
2140} 2816}
2141 2817
2142void noinline 2818void noinline
… …
2144{ 2820{
2145 clear_pending (EV_A_ (W)w); 2821 clear_pending (EV_A_ (W)w);
2146 if (expect_false (!ev_is_active (w))) 2822 if (expect_false (!ev_is_active (w)))
2147 return; 2823 return;
2148 2824
2149 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));
2150 2826
2151 EV_FREQUENT_CHECK; 2827 EV_FREQUENT_CHECK;
2152 2828
2153 wlist_del (&anfds[w->fd].head, (WL)w); 2829 wlist_del (&anfds[w->fd].head, (WL)w);
2154 ev_stop (EV_A_ (W)w); 2830 ev_stop (EV_A_ (W)w);
2155 2831
2156 fd_change (EV_A_ w->fd, 1); 2832 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2157 2833
2158 EV_FREQUENT_CHECK; 2834 EV_FREQUENT_CHECK;
2159} 2835}
2160 2836
2161void noinline 2837void noinline
… …
2164 if (expect_false (ev_is_active (w))) 2840 if (expect_false (ev_is_active (w)))
2165 return; 2841 return;
2166 2842
2167 ev_at (w) += mn_now; 2843 ev_at (w) += mn_now;
2168 2844
2169 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.));
2170 2846
2171 EV_FREQUENT_CHECK; 2847 EV_FREQUENT_CHECK;
2172 2848
2173 ++timercnt; 2849 ++timercnt;
2174 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2850 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2177 ANHE_at_cache (timers [ev_active (w)]); 2853 ANHE_at_cache (timers [ev_active (w)]);
2178 upheap (timers, ev_active (w)); 2854 upheap (timers, ev_active (w));
2179 2855
2180 EV_FREQUENT_CHECK; 2856 EV_FREQUENT_CHECK;
2181 2857
2182 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2858 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2183} 2859}
2184 2860
2185void noinline 2861void noinline
2186ev_timer_stop (EV_P_ ev_timer *w) 2862ev_timer_stop (EV_P_ ev_timer *w)
2187{ 2863{
… …
2192 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2193 2869
2194 { 2870 {
2195 int active = ev_active (w); 2871 int active = ev_active (w);
2196 2872
2197 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2873 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2198 2874
2199 --timercnt; 2875 --timercnt;
2200 2876
2201 if (expect_true (active < timercnt + HEAP0)) 2877 if (expect_true (active < timercnt + HEAP0))
2202 { 2878 {
2203 timers [active] = timers [timercnt + HEAP0]; 2879 timers [active] = timers [timercnt + HEAP0];
2204 adjustheap (timers, timercnt, active); 2880 adjustheap (timers, timercnt, active);
2205 } 2881 }
2206 } 2882 }
2207 2883
2208 EV_FREQUENT_CHECK;
2209
2210 ev_at (w) -= mn_now; 2884 ev_at (w) -= mn_now;
2211 2885
2212 ev_stop (EV_A_ (W)w); 2886 ev_stop (EV_A_ (W)w);
2887
2888 EV_FREQUENT_CHECK;
2213} 2889}
2214 2890
2215void noinline 2891void noinline
2216ev_timer_again (EV_P_ ev_timer *w) 2892ev_timer_again (EV_P_ ev_timer *w)
2217{ 2893{
… …
2235 } 2911 }
2236 2912
2237 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2238} 2914}
2239 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
2240#if EV_PERIODIC_ENABLE 2922#if EV_PERIODIC_ENABLE
2241void noinline 2923void noinline
2242ev_periodic_start (EV_P_ ev_periodic *w) 2924ev_periodic_start (EV_P_ ev_periodic *w)
2243{ 2925{
2244 if (expect_false (ev_is_active (w))) 2926 if (expect_false (ev_is_active (w)))
… …
2246 2928
2247 if (w->reschedule_cb) 2929 if (w->reschedule_cb)
2248 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2249 else if (w->interval) 2931 else if (w->interval)
2250 { 2932 {
2251 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.));
2252 /* this formula differs from the one in periodic_reify because we do not always round up */ 2934 periodic_recalc (EV_A_ w);
2253 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2254 } 2935 }
2255 else 2936 else
2256 ev_at (w) = w->offset; 2937 ev_at (w) = w->offset;
2257 2938
2258 EV_FREQUENT_CHECK; 2939 EV_FREQUENT_CHECK;
… …
2264 ANHE_at_cache (periodics [ev_active (w)]); 2945 ANHE_at_cache (periodics [ev_active (w)]);
2265 upheap (periodics, ev_active (w)); 2946 upheap (periodics, ev_active (w));
2266 2947
2267 EV_FREQUENT_CHECK; 2948 EV_FREQUENT_CHECK;
2268 2949
2269 /*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));*/
2270} 2951}
2271 2952
2272void noinline 2953void noinline
2273ev_periodic_stop (EV_P_ ev_periodic *w) 2954ev_periodic_stop (EV_P_ ev_periodic *w)
2274{ 2955{
… …
2279 EV_FREQUENT_CHECK; 2960 EV_FREQUENT_CHECK;
2280 2961
2281 { 2962 {
2282 int active = ev_active (w); 2963 int active = ev_active (w);
2283 2964
2284 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2965 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2285 2966
2286 --periodiccnt; 2967 --periodiccnt;
2287 2968
2288 if (expect_true (active < periodiccnt + HEAP0)) 2969 if (expect_true (active < periodiccnt + HEAP0))
2289 { 2970 {
2290 periodics [active] = periodics [periodiccnt + HEAP0]; 2971 periodics [active] = periodics [periodiccnt + HEAP0];
2291 adjustheap (periodics, periodiccnt, active); 2972 adjustheap (periodics, periodiccnt, active);
2292 } 2973 }
2293 } 2974 }
2294 2975
2295 EV_FREQUENT_CHECK;
2296
2297 ev_stop (EV_A_ (W)w); 2976 ev_stop (EV_A_ (W)w);
2977
2978 EV_FREQUENT_CHECK;
2298} 2979}
2299 2980
2300void noinline 2981void noinline
2301ev_periodic_again (EV_P_ ev_periodic *w) 2982ev_periodic_again (EV_P_ ev_periodic *w)
2302{ 2983{
… …
2308 2989
2309#ifndef SA_RESTART 2990#ifndef SA_RESTART
2310# define SA_RESTART 0 2991# define SA_RESTART 0
2311#endif 2992#endif
2312 2993
2994#if EV_SIGNAL_ENABLE
2995
2313void noinline 2996void noinline
2314ev_signal_start (EV_P_ ev_signal *w) 2997ev_signal_start (EV_P_ ev_signal *w)
2315{ 2998{
2316#if EV_MULTIPLICITY
2317 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2318#endif
2319 if (expect_false (ev_is_active (w))) 2999 if (expect_false (ev_is_active (w)))
2320 return; 3000 return;
2321 3001
2322 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));
2323 3003
2324 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));
2325 3007
2326 EV_FREQUENT_CHECK; 3008 signals [w->signum - 1].loop = EV_A;
3009#endif
2327 3010
3011 EV_FREQUENT_CHECK;
3012
3013#if EV_USE_SIGNALFD
3014 if (sigfd == -2)
2328 { 3015 {
2329#ifndef _WIN32 3016 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2330 sigset_t full, prev; 3017 if (sigfd < 0 && errno == EINVAL)
2331 sigfillset (&full); 3018 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2332 sigprocmask (SIG_SETMASK, &full, &prev);
2333#endif
2334 3019
2335 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3020 if (sigfd >= 0)
3021 {
3022 fd_intern (sigfd); /* doing it twice will not hurt */
2336 3023
2337#ifndef _WIN32 3024 sigemptyset (&sigfd_set);
2338 sigprocmask (SIG_SETMASK, &prev, 0); 3025
2339#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 }
2340 } 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
2341 3042
2342 ev_start (EV_A_ (W)w, 1); 3043 ev_start (EV_A_ (W)w, 1);
2343 wlist_add (&signals [w->signum - 1].head, (WL)w); 3044 wlist_add (&signals [w->signum - 1].head, (WL)w);
2344 3045
2345 if (!((WL)w)->next) 3046 if (!((WL)w)->next)
3047# if EV_USE_SIGNALFD
3048 if (sigfd < 0) /*TODO*/
3049# endif
2346 { 3050 {
2347#if _WIN32 3051# ifdef _WIN32
3052 evpipe_init (EV_A);
3053
2348 signal (w->signum, ev_sighandler); 3054 signal (w->signum, ev_sighandler);
2349#else 3055# else
2350 struct sigaction sa; 3056 struct sigaction sa;
3057
3058 evpipe_init (EV_A);
3059
2351 sa.sa_handler = ev_sighandler; 3060 sa.sa_handler = ev_sighandler;
2352 sigfillset (&sa.sa_mask); 3061 sigfillset (&sa.sa_mask);
2353 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 */
2354 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 }
2355#endif 3071#endif
2356 } 3072 }
2357 3073
2358 EV_FREQUENT_CHECK; 3074 EV_FREQUENT_CHECK;
2359} 3075}
2360 3076
2361void noinline 3077void noinline
… …
2369 3085
2370 wlist_del (&signals [w->signum - 1].head, (WL)w); 3086 wlist_del (&signals [w->signum - 1].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3087 ev_stop (EV_A_ (W)w);
2372 3088
2373 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
2374 signal (w->signum, SIG_DFL); 3108 signal (w->signum, SIG_DFL);
3109 }
2375 3110
2376 EV_FREQUENT_CHECK; 3111 EV_FREQUENT_CHECK;
2377} 3112}
3113
3114#endif
3115
3116#if EV_CHILD_ENABLE
2378 3117
2379void 3118void
2380ev_child_start (EV_P_ ev_child *w) 3119ev_child_start (EV_P_ ev_child *w)
2381{ 3120{
2382#if EV_MULTIPLICITY 3121#if EV_MULTIPLICITY
2383 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));
2384#endif 3123#endif
2385 if (expect_false (ev_is_active (w))) 3124 if (expect_false (ev_is_active (w)))
2386 return; 3125 return;
2387 3126
2388 EV_FREQUENT_CHECK; 3127 EV_FREQUENT_CHECK;
2389 3128
2390 ev_start (EV_A_ (W)w, 1); 3129 ev_start (EV_A_ (W)w, 1);
2391 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3130 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2392 3131
2393 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2394} 3133}
2395 3134
2396void 3135void
… …
2400 if (expect_false (!ev_is_active (w))) 3139 if (expect_false (!ev_is_active (w)))
2401 return; 3140 return;
2402 3141
2403 EV_FREQUENT_CHECK; 3142 EV_FREQUENT_CHECK;
2404 3143
2405 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3144 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2406 ev_stop (EV_A_ (W)w); 3145 ev_stop (EV_A_ (W)w);
2407 3146
2408 EV_FREQUENT_CHECK; 3147 EV_FREQUENT_CHECK;
2409} 3148}
3149
3150#endif
2410 3151
2411#if EV_STAT_ENABLE 3152#if EV_STAT_ENABLE
2412 3153
2413# ifdef _WIN32 3154# ifdef _WIN32
2414# undef lstat 3155# undef lstat
2415# define lstat(a,b) _stati64 (a,b) 3156# define lstat(a,b) _stati64 (a,b)
2416# endif 3157# endif
2417 3158
2418#define DEF_STAT_INTERVAL 5.0074891 3159#define DEF_STAT_INTERVAL 5.0074891
3160#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2419#define MIN_STAT_INTERVAL 0.1074891 3161#define MIN_STAT_INTERVAL 0.1074891
2420 3162
2421static 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);
2422 3164
2423#if EV_USE_INOTIFY 3165#if EV_USE_INOTIFY
2424# 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)
2425 3169
2426static void noinline 3170static void noinline
2427infy_add (EV_P_ ev_stat *w) 3171infy_add (EV_P_ ev_stat *w)
2428{ 3172{
2429 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);
2430 3174
2431 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 */
2432 { 3195 }
2433 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3196 else
3197 {
3198 /* can't use inotify, continue to stat */
3199 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2434 3200
2435 /* monitor some parent directory for speedup hints */ 3201 /* if path is not there, monitor some parent directory for speedup hints */
2436 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3202 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2437 /* but an efficiency issue only */ 3203 /* but an efficiency issue only */
2438 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3204 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2439 { 3205 {
2440 char path [4096]; 3206 char path [4096];
2441 strcpy (path, w->path); 3207 strcpy (path, w->path);
… …
2445 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3211 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2446 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3212 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2447 3213
2448 char *pend = strrchr (path, '/'); 3214 char *pend = strrchr (path, '/');
2449 3215
2450 if (!pend) 3216 if (!pend || pend == path)
2451 break; /* whoops, no '/', complain to your admin */ 3217 break;
2452 3218
2453 *pend = 0; 3219 *pend = 0;
2454 w->wd = inotify_add_watch (fs_fd, path, mask); 3220 w->wd = inotify_add_watch (fs_fd, path, mask);
2455 } 3221 }
2456 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3222 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2457 } 3223 }
2458 } 3224 }
2459 else
2460 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2461 3225
2462 if (w->wd >= 0) 3226 if (w->wd >= 0)
2463 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);
3228
3229 /* now re-arm timer, if required */
3230 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3231 ev_timer_again (EV_A_ &w->timer);
3232 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2464} 3233}
2465 3234
2466static void noinline 3235static void noinline
2467infy_del (EV_P_ ev_stat *w) 3236infy_del (EV_P_ ev_stat *w)
2468{ 3237{
… …
2471 3240
2472 if (wd < 0) 3241 if (wd < 0)
2473 return; 3242 return;
2474 3243
2475 w->wd = -2; 3244 w->wd = -2;
2476 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3245 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2477 wlist_del (&fs_hash [slot].head, (WL)w); 3246 wlist_del (&fs_hash [slot].head, (WL)w);
2478 3247
2479 /* remove this watcher, if others are watching it, they will rearm */ 3248 /* remove this watcher, if others are watching it, they will rearm */
2480 inotify_rm_watch (fs_fd, wd); 3249 inotify_rm_watch (fs_fd, wd);
2481} 3250}
2482 3251
2483static void noinline 3252static void noinline
2484infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2485{ 3254{
2486 if (slot < 0) 3255 if (slot < 0)
2487 /* overflow, need to check for all hahs slots */ 3256 /* overflow, need to check for all hash slots */
2488 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3257 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2489 infy_wd (EV_A_ slot, wd, ev); 3258 infy_wd (EV_A_ slot, wd, ev);
2490 else 3259 else
2491 { 3260 {
2492 WL w_; 3261 WL w_;
2493 3262
2494 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3263 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2495 { 3264 {
2496 ev_stat *w = (ev_stat *)w_; 3265 ev_stat *w = (ev_stat *)w_;
2497 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 */
2498 3267
2499 if (w->wd == wd || wd == -1) 3268 if (w->wd == wd || wd == -1)
2500 { 3269 {
2501 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3270 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2502 { 3271 {
3272 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2503 w->wd = -1; 3273 w->wd = -1;
2504 infy_add (EV_A_ w); /* re-add, no matter what */ 3274 infy_add (EV_A_ w); /* re-add, no matter what */
2505 } 3275 }
2506 3276
2507 stat_timer_cb (EV_A_ &w->timer, 0); 3277 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2512 3282
2513static void 3283static void
2514infy_cb (EV_P_ ev_io *w, int revents) 3284infy_cb (EV_P_ ev_io *w, int revents)
2515{ 3285{
2516 char buf [EV_INOTIFY_BUFSIZE]; 3286 char buf [EV_INOTIFY_BUFSIZE];
2517 struct inotify_event *ev = (struct inotify_event *)buf;
2518 int ofs; 3287 int ofs;
2519 int len = read (fs_fd, buf, sizeof (buf)); 3288 int len = read (fs_fd, buf, sizeof (buf));
2520 3289
2521 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);
2522 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 }
2523} 3296}
2524 3297
2525void inline_size 3298inline_size void ecb_cold
3299ev_check_2625 (EV_P)
3300{
3301 /* kernels < 2.6.25 are borked
3302 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3303 */
3304 if (ev_linux_version () < 0x020619)
3305 return;
3306
3307 fs_2625 = 1;
3308}
3309
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
2526infy_init (EV_P) 3322infy_init (EV_P)
2527{ 3323{
2528 if (fs_fd != -2) 3324 if (fs_fd != -2)
2529 return; 3325 return;
2530 3326
3327 fs_fd = -1;
3328
3329 ev_check_2625 (EV_A);
3330
2531 fs_fd = inotify_init (); 3331 fs_fd = infy_newfd ();
2532 3332
2533 if (fs_fd >= 0) 3333 if (fs_fd >= 0)
2534 { 3334 {
3335 fd_intern (fs_fd);
2535 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3336 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2536 ev_set_priority (&fs_w, EV_MAXPRI); 3337 ev_set_priority (&fs_w, EV_MAXPRI);
2537 ev_io_start (EV_A_ &fs_w); 3338 ev_io_start (EV_A_ &fs_w);
3339 ev_unref (EV_A);
2538 } 3340 }
2539} 3341}
2540 3342
2541void inline_size 3343inline_size void
2542infy_fork (EV_P) 3344infy_fork (EV_P)
2543{ 3345{
2544 int slot; 3346 int slot;
2545 3347
2546 if (fs_fd < 0) 3348 if (fs_fd < 0)
2547 return; 3349 return;
2548 3350
3351 ev_ref (EV_A);
3352 ev_io_stop (EV_A_ &fs_w);
2549 close (fs_fd); 3353 close (fs_fd);
2550 fs_fd = inotify_init (); 3354 fs_fd = infy_newfd ();
2551 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
2552 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3364 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2553 { 3365 {
2554 WL w_ = fs_hash [slot].head; 3366 WL w_ = fs_hash [slot].head;
2555 fs_hash [slot].head = 0; 3367 fs_hash [slot].head = 0;
2556 3368
2557 while (w_) 3369 while (w_)
… …
2562 w->wd = -1; 3374 w->wd = -1;
2563 3375
2564 if (fs_fd >= 0) 3376 if (fs_fd >= 0)
2565 infy_add (EV_A_ w); /* re-add, no matter what */ 3377 infy_add (EV_A_ w); /* re-add, no matter what */
2566 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);
2567 ev_timer_start (EV_A_ &w->timer); 3382 ev_timer_again (EV_A_ &w->timer);
3383 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3384 }
2568 } 3385 }
2569
2570 } 3386 }
2571} 3387}
2572 3388
2573#endif 3389#endif
2574 3390
… …
2590static void noinline 3406static void noinline
2591stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3407stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2592{ 3408{
2593 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3409 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2594 3410
2595 /* we copy this here each the time so that */ 3411 ev_statdata prev = w->attr;
2596 /* prev has the old value when the callback gets invoked */
2597 w->prev = w->attr;
2598 ev_stat_stat (EV_A_ w); 3412 ev_stat_stat (EV_A_ w);
2599 3413
2600 /* 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 */
2601 if ( 3415 if (
2602 w->prev.st_dev != w->attr.st_dev 3416 prev.st_dev != w->attr.st_dev
2603 || w->prev.st_ino != w->attr.st_ino 3417 || prev.st_ino != w->attr.st_ino
2604 || w->prev.st_mode != w->attr.st_mode 3418 || prev.st_mode != w->attr.st_mode
2605 || w->prev.st_nlink != w->attr.st_nlink 3419 || prev.st_nlink != w->attr.st_nlink
2606 || w->prev.st_uid != w->attr.st_uid 3420 || prev.st_uid != w->attr.st_uid
2607 || w->prev.st_gid != w->attr.st_gid 3421 || prev.st_gid != w->attr.st_gid
2608 || w->prev.st_rdev != w->attr.st_rdev 3422 || prev.st_rdev != w->attr.st_rdev
2609 || w->prev.st_size != w->attr.st_size 3423 || prev.st_size != w->attr.st_size
2610 || w->prev.st_atime != w->attr.st_atime 3424 || prev.st_atime != w->attr.st_atime
2611 || w->prev.st_mtime != w->attr.st_mtime 3425 || prev.st_mtime != w->attr.st_mtime
2612 || w->prev.st_ctime != w->attr.st_ctime 3426 || prev.st_ctime != w->attr.st_ctime
2613 ) { 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
2614 #if EV_USE_INOTIFY 3433 #if EV_USE_INOTIFY
3434 if (fs_fd >= 0)
3435 {
2615 infy_del (EV_A_ w); 3436 infy_del (EV_A_ w);
2616 infy_add (EV_A_ w); 3437 infy_add (EV_A_ w);
2617 ev_stat_stat (EV_A_ w); /* avoid race... */ 3438 ev_stat_stat (EV_A_ w); /* avoid race... */
3439 }
2618 #endif 3440 #endif
2619 3441
2620 ev_feed_event (EV_A_ w, EV_STAT); 3442 ev_feed_event (EV_A_ w, EV_STAT);
2621 } 3443 }
2622} 3444}
… …
2625ev_stat_start (EV_P_ ev_stat *w) 3447ev_stat_start (EV_P_ ev_stat *w)
2626{ 3448{
2627 if (expect_false (ev_is_active (w))) 3449 if (expect_false (ev_is_active (w)))
2628 return; 3450 return;
2629 3451
2630 /* since we use memcmp, we need to clear any padding data etc. */
2631 memset (&w->prev, 0, sizeof (ev_statdata));
2632 memset (&w->attr, 0, sizeof (ev_statdata));
2633
2634 ev_stat_stat (EV_A_ w); 3452 ev_stat_stat (EV_A_ w);
2635 3453
3454 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2636 if (w->interval < MIN_STAT_INTERVAL) 3455 w->interval = MIN_STAT_INTERVAL;
2637 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2638 3456
2639 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3457 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2640 ev_set_priority (&w->timer, ev_priority (w)); 3458 ev_set_priority (&w->timer, ev_priority (w));
2641 3459
2642#if EV_USE_INOTIFY 3460#if EV_USE_INOTIFY
2643 infy_init (EV_A); 3461 infy_init (EV_A);
2644 3462
2645 if (fs_fd >= 0) 3463 if (fs_fd >= 0)
2646 infy_add (EV_A_ w); 3464 infy_add (EV_A_ w);
2647 else 3465 else
2648#endif 3466#endif
3467 {
2649 ev_timer_start (EV_A_ &w->timer); 3468 ev_timer_again (EV_A_ &w->timer);
3469 ev_unref (EV_A);
3470 }
2650 3471
2651 ev_start (EV_A_ (W)w, 1); 3472 ev_start (EV_A_ (W)w, 1);
2652 3473
2653 EV_FREQUENT_CHECK; 3474 EV_FREQUENT_CHECK;
2654} 3475}
… …
2663 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2664 3485
2665#if EV_USE_INOTIFY 3486#if EV_USE_INOTIFY
2666 infy_del (EV_A_ w); 3487 infy_del (EV_A_ w);
2667#endif 3488#endif
3489
3490 if (ev_is_active (&w->timer))
3491 {
3492 ev_ref (EV_A);
2668 ev_timer_stop (EV_A_ &w->timer); 3493 ev_timer_stop (EV_A_ &w->timer);
3494 }
2669 3495
2670 ev_stop (EV_A_ (W)w); 3496 ev_stop (EV_A_ (W)w);
2671 3497
2672 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2673} 3499}
… …
2718 3544
2719 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2720} 3546}
2721#endif 3547#endif
2722 3548
3549#if EV_PREPARE_ENABLE
2723void 3550void
2724ev_prepare_start (EV_P_ ev_prepare *w) 3551ev_prepare_start (EV_P_ ev_prepare *w)
2725{ 3552{
2726 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2727 return; 3554 return;
… …
2753 3580
2754 ev_stop (EV_A_ (W)w); 3581 ev_stop (EV_A_ (W)w);
2755 3582
2756 EV_FREQUENT_CHECK; 3583 EV_FREQUENT_CHECK;
2757} 3584}
3585#endif
2758 3586
3587#if EV_CHECK_ENABLE
2759void 3588void
2760ev_check_start (EV_P_ ev_check *w) 3589ev_check_start (EV_P_ ev_check *w)
2761{ 3590{
2762 if (expect_false (ev_is_active (w))) 3591 if (expect_false (ev_is_active (w)))
2763 return; 3592 return;
… …
2789 3618
2790 ev_stop (EV_A_ (W)w); 3619 ev_stop (EV_A_ (W)w);
2791 3620
2792 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2793} 3622}
3623#endif
2794 3624
2795#if EV_EMBED_ENABLE 3625#if EV_EMBED_ENABLE
2796void noinline 3626void noinline
2797ev_embed_sweep (EV_P_ ev_embed *w) 3627ev_embed_sweep (EV_P_ ev_embed *w)
2798{ 3628{
2799 ev_loop (w->other, EVLOOP_NONBLOCK); 3629 ev_run (w->other, EVRUN_NOWAIT);
2800} 3630}
2801 3631
2802static void 3632static void
2803embed_io_cb (EV_P_ ev_io *io, int revents) 3633embed_io_cb (EV_P_ ev_io *io, int revents)
2804{ 3634{
2805 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3635 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2806 3636
2807 if (ev_cb (w)) 3637 if (ev_cb (w))
2808 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3638 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2809 else 3639 else
2810 ev_loop (w->other, EVLOOP_NONBLOCK); 3640 ev_run (w->other, EVRUN_NOWAIT);
2811} 3641}
2812 3642
2813static void 3643static void
2814embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3644embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2815{ 3645{
2816 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3646 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2817 3647
2818 { 3648 {
2819 struct ev_loop *loop = w->other; 3649 EV_P = w->other;
2820 3650
2821 while (fdchangecnt) 3651 while (fdchangecnt)
2822 { 3652 {
2823 fd_reify (EV_A); 3653 fd_reify (EV_A);
2824 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3654 ev_run (EV_A_ EVRUN_NOWAIT);
2825 } 3655 }
2826 } 3656 }
3657}
3658
3659static void
3660embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3661{
3662 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3663
3664 ev_embed_stop (EV_A_ w);
3665
3666 {
3667 EV_P = w->other;
3668
3669 ev_loop_fork (EV_A);
3670 ev_run (EV_A_ EVRUN_NOWAIT);
3671 }
3672
3673 ev_embed_start (EV_A_ w);
2827} 3674}
2828 3675
2829#if 0 3676#if 0
2830static void 3677static void
2831embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3678embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2839{ 3686{
2840 if (expect_false (ev_is_active (w))) 3687 if (expect_false (ev_is_active (w)))
2841 return; 3688 return;
2842 3689
2843 { 3690 {
2844 struct ev_loop *loop = w->other; 3691 EV_P = w->other;
2845 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 ()));
2846 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);
2847 } 3694 }
2848 3695
2849 EV_FREQUENT_CHECK; 3696 EV_FREQUENT_CHECK;
2850 3697
… …
2853 3700
2854 ev_prepare_init (&w->prepare, embed_prepare_cb); 3701 ev_prepare_init (&w->prepare, embed_prepare_cb);
2855 ev_set_priority (&w->prepare, EV_MINPRI); 3702 ev_set_priority (&w->prepare, EV_MINPRI);
2856 ev_prepare_start (EV_A_ &w->prepare); 3703 ev_prepare_start (EV_A_ &w->prepare);
2857 3704
3705 ev_fork_init (&w->fork, embed_fork_cb);
3706 ev_fork_start (EV_A_ &w->fork);
3707
2858 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3708 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2859 3709
2860 ev_start (EV_A_ (W)w, 1); 3710 ev_start (EV_A_ (W)w, 1);
2861 3711
2862 EV_FREQUENT_CHECK; 3712 EV_FREQUENT_CHECK;
… …
2869 if (expect_false (!ev_is_active (w))) 3719 if (expect_false (!ev_is_active (w)))
2870 return; 3720 return;
2871 3721
2872 EV_FREQUENT_CHECK; 3722 EV_FREQUENT_CHECK;
2873 3723
2874 ev_io_stop (EV_A_ &w->io); 3724 ev_io_stop (EV_A_ &w->io);
2875 ev_prepare_stop (EV_A_ &w->prepare); 3725 ev_prepare_stop (EV_A_ &w->prepare);
3726 ev_fork_stop (EV_A_ &w->fork);
2876 3727
2877 ev_stop (EV_A_ (W)w); 3728 ev_stop (EV_A_ (W)w);
2878 3729
2879 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2880} 3731}
… …
2916 3767
2917 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
2918} 3769}
2919#endif 3770#endif
2920 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
2921#if EV_ASYNC_ENABLE 3813#if EV_ASYNC_ENABLE
2922void 3814void
2923ev_async_start (EV_P_ ev_async *w) 3815ev_async_start (EV_P_ ev_async *w)
2924{ 3816{
2925 if (expect_false (ev_is_active (w))) 3817 if (expect_false (ev_is_active (w)))
2926 return; 3818 return;
2927 3819
3820 w->sent = 0;
3821
2928 evpipe_init (EV_A); 3822 evpipe_init (EV_A);
2929 3823
2930 EV_FREQUENT_CHECK; 3824 EV_FREQUENT_CHECK;
2931 3825
2932 ev_start (EV_A_ (W)w, ++asynccnt); 3826 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2959 3853
2960void 3854void
2961ev_async_send (EV_P_ ev_async *w) 3855ev_async_send (EV_P_ ev_async *w)
2962{ 3856{
2963 w->sent = 1; 3857 w->sent = 1;
2964 evpipe_write (EV_A_ &gotasync); 3858 evpipe_write (EV_A_ &async_pending);
2965} 3859}
2966#endif 3860#endif
2967 3861
2968/*****************************************************************************/ 3862/*****************************************************************************/
2969 3863
… …
2979once_cb (EV_P_ struct ev_once *once, int revents) 3873once_cb (EV_P_ struct ev_once *once, int revents)
2980{ 3874{
2981 void (*cb)(int revents, void *arg) = once->cb; 3875 void (*cb)(int revents, void *arg) = once->cb;
2982 void *arg = once->arg; 3876 void *arg = once->arg;
2983 3877
2984 ev_io_stop (EV_A_ &once->io); 3878 ev_io_stop (EV_A_ &once->io);
2985 ev_timer_stop (EV_A_ &once->to); 3879 ev_timer_stop (EV_A_ &once->to);
2986 ev_free (once); 3880 ev_free (once);
2987 3881
2988 cb (revents, arg); 3882 cb (revents, arg);
2989} 3883}
2990 3884
2991static void 3885static void
2992once_cb_io (EV_P_ ev_io *w, int revents) 3886once_cb_io (EV_P_ ev_io *w, int revents)
2993{ 3887{
2994 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3888 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3889
3890 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2995} 3891}
2996 3892
2997static void 3893static void
2998once_cb_to (EV_P_ ev_timer *w, int revents) 3894once_cb_to (EV_P_ ev_timer *w, int revents)
2999{ 3895{
3000 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3896 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3897
3898 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3001} 3899}
3002 3900
3003void 3901void
3004ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3902ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3005{ 3903{
3006 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));
3007 3905
3008 if (expect_false (!once)) 3906 if (expect_false (!once))
3009 { 3907 {
3010 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3908 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3011 return; 3909 return;
3012 } 3910 }
3013 3911
3014 once->cb = cb; 3912 once->cb = cb;
3015 once->arg = arg; 3913 once->arg = arg;
… …
3027 ev_timer_set (&once->to, timeout, 0.); 3925 ev_timer_set (&once->to, timeout, 0.);
3028 ev_timer_start (EV_A_ &once->to); 3926 ev_timer_start (EV_A_ &once->to);
3029 } 3927 }
3030} 3928}
3031 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
3032#if EV_MULTIPLICITY 4046#if EV_MULTIPLICITY
3033 #include "ev_wrap.h" 4047 #include "ev_wrap.h"
3034#endif 4048#endif
3035 4049
3036#ifdef __cplusplus 4050EV_CPP(})
3037}
3038#endif
3039 4051

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