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Comparing libev/ev.c (file contents):
Revision 1.195 by root, Sat Dec 22 11:44:51 2007 UTC vs.
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 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 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
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-
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-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
56# endif 79# endif
57# endif 80# endif
58 81
82# if HAVE_NANOSLEEP
59# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
61# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
62# else 86# else
87# undef EV_USE_NANOSLEEP
63# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
64# endif 94# endif
65# endif
66
67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
69# define EV_USE_SELECT 1
70# else 95# else
96# undef EV_USE_SELECT
71# define EV_USE_SELECT 0 97# define EV_USE_SELECT 0
98# endif
99
100# if HAVE_POLL && HAVE_POLL_H
101# ifndef EV_USE_POLL
102# define EV_USE_POLL EV_FEATURE_BACKENDS
72# endif 103# endif
73# endif
74
75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
77# define EV_USE_POLL 1
78# else 104# else
105# undef EV_USE_POLL
79# define EV_USE_POLL 0 106# define EV_USE_POLL 0
107# endif
108
109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
110# ifndef EV_USE_EPOLL
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
80# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
81# endif 116# endif
82 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
83# ifndef EV_USE_EPOLL 119# ifndef EV_USE_KQUEUE
84# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
85# define EV_USE_EPOLL 1
86# else
87# define EV_USE_EPOLL 0
88# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
89# endif 125# endif
90 126
91# ifndef EV_USE_KQUEUE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 128# ifndef EV_USE_PORT
93# define EV_USE_KQUEUE 1 129# define EV_USE_PORT EV_FEATURE_BACKENDS
94# else
95# define EV_USE_KQUEUE 0
96# endif 130# endif
97# endif
98
99# ifndef EV_USE_PORT
100# if HAVE_PORT_H && HAVE_PORT_CREATE
101# define EV_USE_PORT 1
102# else 131# else
132# undef EV_USE_PORT
103# define EV_USE_PORT 0 133# define EV_USE_PORT 0
134# endif
135
136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
137# ifndef EV_USE_INOTIFY
138# define EV_USE_INOTIFY EV_FEATURE_OS
104# endif 139# endif
105# endif
106
107# ifndef EV_USE_INOTIFY
108# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
109# define EV_USE_INOTIFY 1
110# else 140# else
141# undef EV_USE_INOTIFY
111# define EV_USE_INOTIFY 0 142# define EV_USE_INOTIFY 0
143# endif
144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD EV_FEATURE_OS
112# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
113# endif 157# endif
114 158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
161# endif
162
115#endif 163#endif
116 164
117#include <math.h> 165#include <math.h>
118#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
119#include <fcntl.h> 168#include <fcntl.h>
120#include <stddef.h> 169#include <stddef.h>
121 170
122#include <stdio.h> 171#include <stdio.h>
123 172
124#include <assert.h> 173#include <assert.h>
125#include <errno.h> 174#include <errno.h>
126#include <sys/types.h> 175#include <sys/types.h>
127#include <time.h> 176#include <time.h>
177#include <limits.h>
128 178
129#include <signal.h> 179#include <signal.h>
130 180
131#ifdef EV_H 181#ifdef EV_H
132# include EV_H 182# include EV_H
… …
137#ifndef _WIN32 187#ifndef _WIN32
138# include <sys/time.h> 188# include <sys/time.h>
139# include <sys/wait.h> 189# include <sys/wait.h>
140# include <unistd.h> 190# include <unistd.h>
141#else 191#else
192# include <io.h>
142# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
143# include <windows.h> 194# include <windows.h>
144# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
145# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
146# endif 197# endif
198# undef EV_AVOID_STDIO
199#endif
200
201/* this block tries to deduce configuration from header-defined symbols and defaults */
202
203/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG)
205/* use what's provided */
206#elif defined (NSIG)
207# define EV_NSIG (NSIG)
208#elif defined(_NSIG)
209# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX)
211# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX)
213# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX)
215# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG)
217# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG)
219# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE)
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig)
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else
225# error "unable to find value for NSIG, please report"
226/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */
228# define EV_NSIG 65
229#endif
230
231#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else
235# define EV_USE_CLOCK_SYSCALL 0
147#endif 236# endif
148 237#endif
149/**/
150 238
151#ifndef EV_USE_MONOTONIC 239#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else
152# define EV_USE_MONOTONIC 0 243# define EV_USE_MONOTONIC 0
244# endif
153#endif 245#endif
154 246
155#ifndef EV_USE_REALTIME 247#ifndef EV_USE_REALTIME
156# define EV_USE_REALTIME 0 248# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
157#endif 249#endif
158 250
159#ifndef EV_USE_NANOSLEEP 251#ifndef EV_USE_NANOSLEEP
252# if _POSIX_C_SOURCE >= 199309L
253# define EV_USE_NANOSLEEP EV_FEATURE_OS
254# else
160# define EV_USE_NANOSLEEP 0 255# define EV_USE_NANOSLEEP 0
256# endif
161#endif 257#endif
162 258
163#ifndef EV_USE_SELECT 259#ifndef EV_USE_SELECT
164# define EV_USE_SELECT 1 260# define EV_USE_SELECT EV_FEATURE_BACKENDS
165#endif 261#endif
166 262
167#ifndef EV_USE_POLL 263#ifndef EV_USE_POLL
168# ifdef _WIN32 264# ifdef _WIN32
169# define EV_USE_POLL 0 265# define EV_USE_POLL 0
170# else 266# else
171# define EV_USE_POLL 1 267# define EV_USE_POLL EV_FEATURE_BACKENDS
172# endif 268# endif
173#endif 269#endif
174 270
175#ifndef EV_USE_EPOLL 271#ifndef EV_USE_EPOLL
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
273# define EV_USE_EPOLL EV_FEATURE_BACKENDS
274# else
176# define EV_USE_EPOLL 0 275# define EV_USE_EPOLL 0
276# endif
177#endif 277#endif
178 278
179#ifndef EV_USE_KQUEUE 279#ifndef EV_USE_KQUEUE
180# define EV_USE_KQUEUE 0 280# define EV_USE_KQUEUE 0
181#endif 281#endif
… …
183#ifndef EV_USE_PORT 283#ifndef EV_USE_PORT
184# define EV_USE_PORT 0 284# define EV_USE_PORT 0
185#endif 285#endif
186 286
187#ifndef EV_USE_INOTIFY 287#ifndef EV_USE_INOTIFY
288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
289# define EV_USE_INOTIFY EV_FEATURE_OS
290# else
188# define EV_USE_INOTIFY 0 291# define EV_USE_INOTIFY 0
292# endif
189#endif 293#endif
190 294
191#ifndef EV_PID_HASHSIZE 295#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL 296# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
193# define EV_PID_HASHSIZE 1 297#endif
298
299#ifndef EV_INOTIFY_HASHSIZE
300# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
301#endif
302
303#ifndef EV_USE_EVENTFD
304# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
305# define EV_USE_EVENTFD EV_FEATURE_OS
194# else 306# else
195# define EV_PID_HASHSIZE 16 307# define EV_USE_EVENTFD 0
196# endif
197#endif 308# endif
309#endif
198 310
199#ifndef EV_INOTIFY_HASHSIZE 311#ifndef EV_USE_SIGNALFD
200# if EV_MINIMAL 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
201# define EV_INOTIFY_HASHSIZE 1 313# define EV_USE_SIGNALFD EV_FEATURE_OS
202# else 314# else
203# define EV_INOTIFY_HASHSIZE 16 315# define EV_USE_SIGNALFD 0
204# endif
205#endif 316# endif
317#endif
206 318
207/**/ 319#if 0 /* debugging */
320# define EV_VERIFY 3
321# define EV_USE_4HEAP 1
322# define EV_HEAP_CACHE_AT 1
323#endif
324
325#ifndef EV_VERIFY
326# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
327#endif
328
329#ifndef EV_USE_4HEAP
330# define EV_USE_4HEAP EV_FEATURE_DATA
331#endif
332
333#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif
336
337/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
338/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h>
341# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1
345# else
346# undef EV_USE_CLOCK_SYSCALL
347# define EV_USE_CLOCK_SYSCALL 0
348# endif
349#endif
350
351/* this block fixes any misconfiguration where we know we run into trouble otherwise */
352
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
208 358
209#ifndef CLOCK_MONOTONIC 359#ifndef CLOCK_MONOTONIC
210# undef EV_USE_MONOTONIC 360# undef EV_USE_MONOTONIC
211# define EV_USE_MONOTONIC 0 361# define EV_USE_MONOTONIC 0
212#endif 362#endif
… …
226# include <sys/select.h> 376# include <sys/select.h>
227# endif 377# endif
228#endif 378#endif
229 379
230#if EV_USE_INOTIFY 380#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h>
231# include <sys/inotify.h> 383# include <sys/inotify.h>
384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0
388# endif
232#endif 389#endif
233 390
234#if EV_SELECT_IS_WINSOCKET 391#if EV_SELECT_IS_WINSOCKET
235# include <winsock.h> 392# include <winsock.h>
236#endif 393#endif
237 394
395#if EV_USE_EVENTFD
396/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
397# include <stdint.h>
398# ifndef EFD_NONBLOCK
399# define EFD_NONBLOCK O_NONBLOCK
400# endif
401# ifndef EFD_CLOEXEC
402# ifdef O_CLOEXEC
403# define EFD_CLOEXEC O_CLOEXEC
404# else
405# define EFD_CLOEXEC 02000000
406# endif
407# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags);
434
435struct signalfd_siginfo
436{
437 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)];
439};
440# ifdef __cplusplus
441}
442# endif
443#endif
444
445
238/**/ 446/**/
447
448#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else
451# define EV_FREQUENT_CHECK do { } while (0)
452#endif
239 453
240/* 454/*
241 * This is used to avoid floating point rounding problems. 455 * This is used to avoid floating point rounding problems.
242 * It is added to ev_rt_now when scheduling periodics 456 * It is added to ev_rt_now when scheduling periodics
243 * to ensure progress, time-wise, even when rounding 457 * to ensure progress, time-wise, even when rounding
… …
247 */ 461 */
248#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
249 463
250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
253 466
254#if __GNUC__ >= 4 467#if __GNUC__ >= 4
255# define expect(expr,value) __builtin_expect ((expr),(value)) 468# define expect(expr,value) __builtin_expect ((expr),(value))
256# define noinline __attribute__ ((noinline)) 469# define noinline __attribute__ ((noinline))
257#else 470#else
258# define expect(expr,value) (expr) 471# define expect(expr,value) (expr)
259# define noinline 472# define noinline
260# if __STDC_VERSION__ < 199901L 473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
261# define inline 474# define inline
262# endif 475# endif
263#endif 476#endif
264 477
265#define expect_false(expr) expect ((expr) != 0, 0) 478#define expect_false(expr) expect ((expr) != 0, 0)
266#define expect_true(expr) expect ((expr) != 0, 1) 479#define expect_true(expr) expect ((expr) != 0, 1)
267#define inline_size static inline 480#define inline_size static inline
268 481
269#if EV_MINIMAL 482#if EV_FEATURE_CODE
483# define inline_speed static inline
484#else
270# define inline_speed static noinline 485# define inline_speed static noinline
486#endif
487
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489
490#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0)
271#else 492#else
272# define inline_speed static inline
273#endif
274
275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif
277 495
278#define EMPTY /* required for microsofts broken pseudo-c compiler */ 496#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */ 497#define EMPTY2(a,b) /* used to suppress some warnings */
280 498
281typedef ev_watcher *W; 499typedef ev_watcher *W;
282typedef ev_watcher_list *WL; 500typedef ev_watcher_list *WL;
283typedef ev_watcher_time *WT; 501typedef ev_watcher_time *WT;
284 502
503#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at
505
506#if EV_USE_REALTIME
285/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 507/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */ 508/* giving it a reasonably high chance of working on typical architetcures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif
511
512#if EV_USE_MONOTONIC
287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
514#endif
515
516#ifndef EV_FD_TO_WIN32_HANDLE
517# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
518#endif
519#ifndef EV_WIN32_HANDLE_TO_FD
520# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
521#endif
522#ifndef EV_WIN32_CLOSE_FD
523# define EV_WIN32_CLOSE_FD(fd) close (fd)
524#endif
288 525
289#ifdef _WIN32 526#ifdef _WIN32
290# include "ev_win32.c" 527# include "ev_win32.c"
291#endif 528#endif
292 529
293/*****************************************************************************/ 530/*****************************************************************************/
294 531
532#if EV_AVOID_STDIO
533static void noinline
534ev_printerr (const char *msg)
535{
536 write (STDERR_FILENO, msg, strlen (msg));
537}
538#endif
539
295static void (*syserr_cb)(const char *msg); 540static void (*syserr_cb)(const char *msg);
296 541
297void 542void
298ev_set_syserr_cb (void (*cb)(const char *msg)) 543ev_set_syserr_cb (void (*cb)(const char *msg))
299{ 544{
300 syserr_cb = cb; 545 syserr_cb = cb;
301} 546}
302 547
303static void noinline 548static void noinline
304syserr (const char *msg) 549ev_syserr (const char *msg)
305{ 550{
306 if (!msg) 551 if (!msg)
307 msg = "(libev) system error"; 552 msg = "(libev) system error";
308 553
309 if (syserr_cb) 554 if (syserr_cb)
310 syserr_cb (msg); 555 syserr_cb (msg);
311 else 556 else
312 { 557 {
558#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg);
562 ev_printerr (": ");
563 ev_printerr (err);
564 ev_printerr ("\n");
565#else
313 perror (msg); 566 perror (msg);
567#endif
314 abort (); 568 abort ();
315 } 569 }
316} 570}
317 571
572static void *
573ev_realloc_emul (void *ptr, long size)
574{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly
579 * implement realloc (x, 0) (as required by both ansi c-89 and
580 * the single unix specification, so work around them here.
581 */
582
583 if (size)
584 return realloc (ptr, size);
585
586 free (ptr);
587 return 0;
588#endif
589}
590
318static void *(*alloc)(void *ptr, long size); 591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
319 592
320void 593void
321ev_set_allocator (void *(*cb)(void *ptr, long size)) 594ev_set_allocator (void *(*cb)(void *ptr, long size))
322{ 595{
323 alloc = cb; 596 alloc = cb;
324} 597}
325 598
326inline_speed void * 599inline_speed void *
327ev_realloc (void *ptr, long size) 600ev_realloc (void *ptr, long size)
328{ 601{
329 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 602 ptr = alloc (ptr, size);
330 603
331 if (!ptr && size) 604 if (!ptr && size)
332 { 605 {
606#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n");
608#else
333 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
610#endif
334 abort (); 611 abort ();
335 } 612 }
336 613
337 return ptr; 614 return ptr;
338} 615}
… …
340#define ev_malloc(size) ev_realloc (0, (size)) 617#define ev_malloc(size) ev_realloc (0, (size))
341#define ev_free(ptr) ev_realloc ((ptr), 0) 618#define ev_free(ptr) ev_realloc ((ptr), 0)
342 619
343/*****************************************************************************/ 620/*****************************************************************************/
344 621
622/* set in reify when reification needed */
623#define EV_ANFD_REIFY 1
624
625/* file descriptor info structure */
345typedef struct 626typedef struct
346{ 627{
347 WL head; 628 WL head;
348 unsigned char events; 629 unsigned char events; /* the events watched for */
630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
349 unsigned char reify; 632 unsigned char unused;
633#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif
350#if EV_SELECT_IS_WINSOCKET 636#if EV_SELECT_IS_WINSOCKET
351 SOCKET handle; 637 SOCKET handle;
352#endif 638#endif
353} ANFD; 639} ANFD;
354 640
641/* stores the pending event set for a given watcher */
355typedef struct 642typedef struct
356{ 643{
357 W w; 644 W w;
358 int events; 645 int events; /* the pending event set for the given watcher */
359} ANPENDING; 646} ANPENDING;
360 647
361#if EV_USE_INOTIFY 648#if EV_USE_INOTIFY
649/* hash table entry per inotify-id */
362typedef struct 650typedef struct
363{ 651{
364 WL head; 652 WL head;
365} ANFS; 653} ANFS;
654#endif
655
656/* Heap Entry */
657#if EV_HEAP_CACHE_AT
658 /* a heap element */
659 typedef struct {
660 ev_tstamp at;
661 WT w;
662 } ANHE;
663
664 #define ANHE_w(he) (he).w /* access watcher, read-write */
665 #define ANHE_at(he) (he).at /* access cached at, read-only */
666 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
667#else
668 /* a heap element */
669 typedef WT ANHE;
670
671 #define ANHE_w(he) (he)
672 #define ANHE_at(he) (he)->at
673 #define ANHE_at_cache(he)
366#endif 674#endif
367 675
368#if EV_MULTIPLICITY 676#if EV_MULTIPLICITY
369 677
370 struct ev_loop 678 struct ev_loop
… …
389 697
390 static int ev_default_loop_ptr; 698 static int ev_default_loop_ptr;
391 699
392#endif 700#endif
393 701
702#if EV_FEATURE_API
703# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
704# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
705# define EV_INVOKE_PENDING invoke_cb (EV_A)
706#else
707# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif
711
712#define EVUNLOOP_RECURSE 0x80
713
394/*****************************************************************************/ 714/*****************************************************************************/
395 715
716#ifndef EV_HAVE_EV_TIME
396ev_tstamp 717ev_tstamp
397ev_time (void) 718ev_time (void)
398{ 719{
399#if EV_USE_REALTIME 720#if EV_USE_REALTIME
721 if (expect_true (have_realtime))
722 {
400 struct timespec ts; 723 struct timespec ts;
401 clock_gettime (CLOCK_REALTIME, &ts); 724 clock_gettime (CLOCK_REALTIME, &ts);
402 return ts.tv_sec + ts.tv_nsec * 1e-9; 725 return ts.tv_sec + ts.tv_nsec * 1e-9;
403#else 726 }
727#endif
728
404 struct timeval tv; 729 struct timeval tv;
405 gettimeofday (&tv, 0); 730 gettimeofday (&tv, 0);
406 return tv.tv_sec + tv.tv_usec * 1e-6; 731 return tv.tv_sec + tv.tv_usec * 1e-6;
407#endif
408} 732}
733#endif
409 734
410ev_tstamp inline_size 735inline_size ev_tstamp
411get_clock (void) 736get_clock (void)
412{ 737{
413#if EV_USE_MONOTONIC 738#if EV_USE_MONOTONIC
414 if (expect_true (have_monotonic)) 739 if (expect_true (have_monotonic))
415 { 740 {
… …
441 ts.tv_sec = (time_t)delay; 766 ts.tv_sec = (time_t)delay;
442 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443 768
444 nanosleep (&ts, 0); 769 nanosleep (&ts, 0);
445#elif defined(_WIN32) 770#elif defined(_WIN32)
446 Sleep (delay * 1e3); 771 Sleep ((unsigned long)(delay * 1e3));
447#else 772#else
448 struct timeval tv; 773 struct timeval tv;
449 774
450 tv.tv_sec = (time_t)delay; 775 tv.tv_sec = (time_t)delay;
451 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452 777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */
453 select (0, 0, 0, 0, &tv); 781 select (0, 0, 0, 0, &tv);
454#endif 782#endif
455 } 783 }
456} 784}
457 785
458/*****************************************************************************/ 786/*****************************************************************************/
459 787
460int inline_size 788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789
790/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */
792inline_size int
461array_nextsize (int elem, int cur, int cnt) 793array_nextsize (int elem, int cur, int cnt)
462{ 794{
463 int ncur = cur + 1; 795 int ncur = cur + 1;
464 796
465 do 797 do
466 ncur <<= 1; 798 ncur <<= 1;
467 while (cnt > ncur); 799 while (cnt > ncur);
468 800
469 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
470 if (elem * ncur > 4096) 802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
471 { 803 {
472 ncur *= elem; 804 ncur *= elem;
473 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
474 ncur = ncur - sizeof (void *) * 4; 806 ncur = ncur - sizeof (void *) * 4;
475 ncur /= elem; 807 ncur /= elem;
476 } 808 }
477 809
478 return ncur; 810 return ncur;
… …
482array_realloc (int elem, void *base, int *cur, int cnt) 814array_realloc (int elem, void *base, int *cur, int cnt)
483{ 815{
484 *cur = array_nextsize (elem, *cur, cnt); 816 *cur = array_nextsize (elem, *cur, cnt);
485 return ev_realloc (base, elem * *cur); 817 return ev_realloc (base, elem * *cur);
486} 818}
819
820#define array_init_zero(base,count) \
821 memset ((void *)(base), 0, sizeof (*(base)) * (count))
487 822
488#define array_needsize(type,base,cur,cnt,init) \ 823#define array_needsize(type,base,cur,cnt,init) \
489 if (expect_false ((cnt) > (cur))) \ 824 if (expect_false ((cnt) > (cur))) \
490 { \ 825 { \
491 int ocur_ = (cur); \ 826 int ocur_ = (cur); \
… …
503 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 838 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
504 } 839 }
505#endif 840#endif
506 841
507#define array_free(stem, idx) \ 842#define array_free(stem, idx) \
508 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 843 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
509 844
510/*****************************************************************************/ 845/*****************************************************************************/
846
847/* dummy callback for pending events */
848static void noinline
849pendingcb (EV_P_ ev_prepare *w, int revents)
850{
851}
511 852
512void noinline 853void noinline
513ev_feed_event (EV_P_ void *w, int revents) 854ev_feed_event (EV_P_ void *w, int revents)
514{ 855{
515 W w_ = (W)w; 856 W w_ = (W)w;
… …
524 pendings [pri][w_->pending - 1].w = w_; 865 pendings [pri][w_->pending - 1].w = w_;
525 pendings [pri][w_->pending - 1].events = revents; 866 pendings [pri][w_->pending - 1].events = revents;
526 } 867 }
527} 868}
528 869
529void inline_speed 870inline_speed void
871feed_reverse (EV_P_ W w)
872{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
874 rfeeds [rfeedcnt++] = w;
875}
876
877inline_size void
878feed_reverse_done (EV_P_ int revents)
879{
880 do
881 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
882 while (rfeedcnt);
883}
884
885inline_speed void
530queue_events (EV_P_ W *events, int eventcnt, int type) 886queue_events (EV_P_ W *events, int eventcnt, int type)
531{ 887{
532 int i; 888 int i;
533 889
534 for (i = 0; i < eventcnt; ++i) 890 for (i = 0; i < eventcnt; ++i)
535 ev_feed_event (EV_A_ events [i], type); 891 ev_feed_event (EV_A_ events [i], type);
536} 892}
537 893
538/*****************************************************************************/ 894/*****************************************************************************/
539 895
540void inline_size 896inline_speed void
541anfds_init (ANFD *base, int count)
542{
543 while (count--)
544 {
545 base->head = 0;
546 base->events = EV_NONE;
547 base->reify = 0;
548
549 ++base;
550 }
551}
552
553void inline_speed
554fd_event (EV_P_ int fd, int revents) 897fd_event_nocheck (EV_P_ int fd, int revents)
555{ 898{
556 ANFD *anfd = anfds + fd; 899 ANFD *anfd = anfds + fd;
557 ev_io *w; 900 ev_io *w;
558 901
559 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 902 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
563 if (ev) 906 if (ev)
564 ev_feed_event (EV_A_ (W)w, ev); 907 ev_feed_event (EV_A_ (W)w, ev);
565 } 908 }
566} 909}
567 910
911/* do not submit kernel events for fds that have reify set */
912/* because that means they changed while we were polling for new events */
913inline_speed void
914fd_event (EV_P_ int fd, int revents)
915{
916 ANFD *anfd = anfds + fd;
917
918 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents);
920}
921
568void 922void
569ev_feed_fd_event (EV_P_ int fd, int revents) 923ev_feed_fd_event (EV_P_ int fd, int revents)
570{ 924{
571 if (fd >= 0 && fd < anfdmax) 925 if (fd >= 0 && fd < anfdmax)
572 fd_event (EV_A_ fd, revents); 926 fd_event_nocheck (EV_A_ fd, revents);
573} 927}
574 928
575void inline_size 929/* make sure the external fd watch events are in-sync */
930/* with the kernel/libev internal state */
931inline_size void
576fd_reify (EV_P) 932fd_reify (EV_P)
577{ 933{
578 int i; 934 int i;
579 935
580 for (i = 0; i < fdchangecnt; ++i) 936 for (i = 0; i < fdchangecnt; ++i)
… …
589 events |= (unsigned char)w->events; 945 events |= (unsigned char)w->events;
590 946
591#if EV_SELECT_IS_WINSOCKET 947#if EV_SELECT_IS_WINSOCKET
592 if (events) 948 if (events)
593 { 949 {
594 unsigned long argp; 950 unsigned long arg;
595 anfd->handle = _get_osfhandle (fd); 951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
597 } 953 }
598#endif 954#endif
599 955
600 { 956 {
601 unsigned char o_events = anfd->events; 957 unsigned char o_events = anfd->events;
602 unsigned char o_reify = anfd->reify; 958 unsigned char o_reify = anfd->reify;
603 959
604 anfd->reify = 0; 960 anfd->reify = 0;
605 anfd->events = events; 961 anfd->events = events;
606 962
607 if (o_events != events || o_reify & EV_IOFDSET) 963 if (o_events != events || o_reify & EV__IOFDSET)
608 backend_modify (EV_A_ fd, o_events, events); 964 backend_modify (EV_A_ fd, o_events, events);
609 } 965 }
610 } 966 }
611 967
612 fdchangecnt = 0; 968 fdchangecnt = 0;
613} 969}
614 970
615void inline_size 971/* something about the given fd changed */
972inline_size void
616fd_change (EV_P_ int fd, int flags) 973fd_change (EV_P_ int fd, int flags)
617{ 974{
618 unsigned char reify = anfds [fd].reify; 975 unsigned char reify = anfds [fd].reify;
619 anfds [fd].reify |= flags; 976 anfds [fd].reify |= flags;
620 977
… …
624 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
625 fdchanges [fdchangecnt - 1] = fd; 982 fdchanges [fdchangecnt - 1] = fd;
626 } 983 }
627} 984}
628 985
629void inline_speed 986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void
630fd_kill (EV_P_ int fd) 988fd_kill (EV_P_ int fd)
631{ 989{
632 ev_io *w; 990 ev_io *w;
633 991
634 while ((w = (ev_io *)anfds [fd].head)) 992 while ((w = (ev_io *)anfds [fd].head))
… …
636 ev_io_stop (EV_A_ w); 994 ev_io_stop (EV_A_ w);
637 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
638 } 996 }
639} 997}
640 998
641int inline_size 999/* check whether the given fd is actually valid, for error recovery */
1000inline_size int
642fd_valid (int fd) 1001fd_valid (int fd)
643{ 1002{
644#ifdef _WIN32 1003#ifdef _WIN32
645 return _get_osfhandle (fd) != -1; 1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
646#else 1005#else
647 return fcntl (fd, F_GETFD) != -1; 1006 return fcntl (fd, F_GETFD) != -1;
648#endif 1007#endif
649} 1008}
650 1009
… …
654{ 1013{
655 int fd; 1014 int fd;
656 1015
657 for (fd = 0; fd < anfdmax; ++fd) 1016 for (fd = 0; fd < anfdmax; ++fd)
658 if (anfds [fd].events) 1017 if (anfds [fd].events)
659 if (!fd_valid (fd) == -1 && errno == EBADF) 1018 if (!fd_valid (fd) && errno == EBADF)
660 fd_kill (EV_A_ fd); 1019 fd_kill (EV_A_ fd);
661} 1020}
662 1021
663/* called on ENOMEM in select/poll to kill some fds and retry */ 1022/* called on ENOMEM in select/poll to kill some fds and retry */
664static void noinline 1023static void noinline
… …
668 1027
669 for (fd = anfdmax; fd--; ) 1028 for (fd = anfdmax; fd--; )
670 if (anfds [fd].events) 1029 if (anfds [fd].events)
671 { 1030 {
672 fd_kill (EV_A_ fd); 1031 fd_kill (EV_A_ fd);
673 return; 1032 break;
674 } 1033 }
675} 1034}
676 1035
677/* usually called after fork if backend needs to re-arm all fds from scratch */ 1036/* usually called after fork if backend needs to re-arm all fds from scratch */
678static void noinline 1037static void noinline
… …
682 1041
683 for (fd = 0; fd < anfdmax; ++fd) 1042 for (fd = 0; fd < anfdmax; ++fd)
684 if (anfds [fd].events) 1043 if (anfds [fd].events)
685 { 1044 {
686 anfds [fd].events = 0; 1045 anfds [fd].events = 0;
1046 anfds [fd].emask = 0;
687 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1047 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
688 } 1048 }
689} 1049}
690 1050
691/*****************************************************************************/ 1051/* used to prepare libev internal fd's */
692 1052/* this is not fork-safe */
693void inline_speed 1053inline_speed void
694upheap (WT *heap, int k)
695{
696 WT w = heap [k];
697
698 while (k)
699 {
700 int p = (k - 1) >> 1;
701
702 if (heap [p]->at <= w->at)
703 break;
704
705 heap [k] = heap [p];
706 ((W)heap [k])->active = k + 1;
707 k = p;
708 }
709
710 heap [k] = w;
711 ((W)heap [k])->active = k + 1;
712}
713
714void inline_speed
715downheap (WT *heap, int N, int k)
716{
717 WT w = heap [k];
718
719 for (;;)
720 {
721 int c = (k << 1) + 1;
722
723 if (c >= N)
724 break;
725
726 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
727 ? 1 : 0;
728
729 if (w->at <= heap [c]->at)
730 break;
731
732 heap [k] = heap [c];
733 ((W)heap [k])->active = k + 1;
734
735 k = c;
736 }
737
738 heap [k] = w;
739 ((W)heap [k])->active = k + 1;
740}
741
742void inline_size
743adjustheap (WT *heap, int N, int k)
744{
745 upheap (heap, k);
746 downheap (heap, N, k);
747}
748
749/*****************************************************************************/
750
751typedef struct
752{
753 WL head;
754 sig_atomic_t volatile gotsig;
755} ANSIG;
756
757static ANSIG *signals;
758static int signalmax;
759
760static int sigpipe [2];
761static sig_atomic_t volatile gotsig;
762static ev_io sigev;
763
764void inline_size
765signals_init (ANSIG *base, int count)
766{
767 while (count--)
768 {
769 base->head = 0;
770 base->gotsig = 0;
771
772 ++base;
773 }
774}
775
776static void
777sighandler (int signum)
778{
779#if _WIN32
780 signal (signum, sighandler);
781#endif
782
783 signals [signum - 1].gotsig = 1;
784
785 if (!gotsig)
786 {
787 int old_errno = errno;
788 gotsig = 1;
789 write (sigpipe [1], &signum, 1);
790 errno = old_errno;
791 }
792}
793
794void noinline
795ev_feed_signal_event (EV_P_ int signum)
796{
797 WL w;
798
799#if EV_MULTIPLICITY
800 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
801#endif
802
803 --signum;
804
805 if (signum < 0 || signum >= signalmax)
806 return;
807
808 signals [signum].gotsig = 0;
809
810 for (w = signals [signum].head; w; w = w->next)
811 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
812}
813
814static void
815sigcb (EV_P_ ev_io *iow, int revents)
816{
817 int signum;
818
819 read (sigpipe [0], &revents, 1);
820 gotsig = 0;
821
822 for (signum = signalmax; signum--; )
823 if (signals [signum].gotsig)
824 ev_feed_signal_event (EV_A_ signum + 1);
825}
826
827void inline_speed
828fd_intern (int fd) 1054fd_intern (int fd)
829{ 1055{
830#ifdef _WIN32 1056#ifdef _WIN32
831 int arg = 1; 1057 unsigned long arg = 1;
832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1058 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
833#else 1059#else
834 fcntl (fd, F_SETFD, FD_CLOEXEC); 1060 fcntl (fd, F_SETFD, FD_CLOEXEC);
835 fcntl (fd, F_SETFL, O_NONBLOCK); 1061 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif 1062#endif
837} 1063}
838 1064
1065/*****************************************************************************/
1066
1067/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree.
1071 */
1072
1073/*
1074 * at the moment we allow libev the luxury of two heaps,
1075 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1076 * which is more cache-efficient.
1077 * the difference is about 5% with 50000+ watchers.
1078 */
1079#if EV_USE_4HEAP
1080
1081#define DHEAP 4
1082#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1083#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1084#define UPHEAP_DONE(p,k) ((p) == (k))
1085
1086/* away from the root */
1087inline_speed void
1088downheap (ANHE *heap, int N, int k)
1089{
1090 ANHE he = heap [k];
1091 ANHE *E = heap + N + HEAP0;
1092
1093 for (;;)
1094 {
1095 ev_tstamp minat;
1096 ANHE *minpos;
1097 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1098
1099 /* find minimum child */
1100 if (expect_true (pos + DHEAP - 1 < E))
1101 {
1102 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1103 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1104 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1105 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1106 }
1107 else if (pos < E)
1108 {
1109 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1110 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1111 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1112 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1113 }
1114 else
1115 break;
1116
1117 if (ANHE_at (he) <= minat)
1118 break;
1119
1120 heap [k] = *minpos;
1121 ev_active (ANHE_w (*minpos)) = k;
1122
1123 k = minpos - heap;
1124 }
1125
1126 heap [k] = he;
1127 ev_active (ANHE_w (he)) = k;
1128}
1129
1130#else /* 4HEAP */
1131
1132#define HEAP0 1
1133#define HPARENT(k) ((k) >> 1)
1134#define UPHEAP_DONE(p,k) (!(p))
1135
1136/* away from the root */
1137inline_speed void
1138downheap (ANHE *heap, int N, int k)
1139{
1140 ANHE he = heap [k];
1141
1142 for (;;)
1143 {
1144 int c = k << 1;
1145
1146 if (c >= N + HEAP0)
1147 break;
1148
1149 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1150 ? 1 : 0;
1151
1152 if (ANHE_at (he) <= ANHE_at (heap [c]))
1153 break;
1154
1155 heap [k] = heap [c];
1156 ev_active (ANHE_w (heap [k])) = k;
1157
1158 k = c;
1159 }
1160
1161 heap [k] = he;
1162 ev_active (ANHE_w (he)) = k;
1163}
1164#endif
1165
1166/* towards the root */
1167inline_speed void
1168upheap (ANHE *heap, int k)
1169{
1170 ANHE he = heap [k];
1171
1172 for (;;)
1173 {
1174 int p = HPARENT (k);
1175
1176 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1177 break;
1178
1179 heap [k] = heap [p];
1180 ev_active (ANHE_w (heap [k])) = k;
1181 k = p;
1182 }
1183
1184 heap [k] = he;
1185 ev_active (ANHE_w (he)) = k;
1186}
1187
1188/* move an element suitably so it is in a correct place */
1189inline_size void
1190adjustheap (ANHE *heap, int N, int k)
1191{
1192 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1193 upheap (heap, k);
1194 else
1195 downheap (heap, N, k);
1196}
1197
1198/* rebuild the heap: this function is used only once and executed rarely */
1199inline_size void
1200reheap (ANHE *heap, int N)
1201{
1202 int i;
1203
1204 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1205 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1206 for (i = 0; i < N; ++i)
1207 upheap (heap, i + HEAP0);
1208}
1209
1210/*****************************************************************************/
1211
1212/* associate signal watchers to a signal signal */
1213typedef struct
1214{
1215 EV_ATOMIC_T pending;
1216#if EV_MULTIPLICITY
1217 EV_P;
1218#endif
1219 WL head;
1220} ANSIG;
1221
1222static ANSIG signals [EV_NSIG - 1];
1223
1224/*****************************************************************************/
1225
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227
839static void noinline 1228static void noinline
840siginit (EV_P) 1229evpipe_init (EV_P)
841{ 1230{
1231 if (!ev_is_active (&pipe_w))
1232 {
1233# if EV_USE_EVENTFD
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0);
1237
1238 if (evfd >= 0)
1239 {
1240 evpipe [0] = -1;
1241 fd_intern (evfd); /* doing it twice doesn't hurt */
1242 ev_io_set (&pipe_w, evfd, EV_READ);
1243 }
1244 else
1245# endif
1246 {
1247 while (pipe (evpipe))
1248 ev_syserr ("(libev) error creating signal/async pipe");
1249
842 fd_intern (sigpipe [0]); 1250 fd_intern (evpipe [0]);
843 fd_intern (sigpipe [1]); 1251 fd_intern (evpipe [1]);
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1253 }
844 1254
845 ev_io_set (&sigev, sigpipe [0], EV_READ);
846 ev_io_start (EV_A_ &sigev); 1255 ev_io_start (EV_A_ &pipe_w);
847 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 }
1258}
1259
1260inline_size void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{
1263 if (!*flag)
1264 {
1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269
1270#if EV_USE_EVENTFD
1271 if (evfd >= 0)
1272 {
1273 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t));
1275 }
1276 else
1277#endif
1278 write (evpipe [1], &dummy, 1);
1279
1280 errno = old_errno;
1281 }
1282}
1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1286static void
1287pipecb (EV_P_ ev_io *iow, int revents)
1288{
1289 int i;
1290
1291#if EV_USE_EVENTFD
1292 if (evfd >= 0)
1293 {
1294 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t));
1296 }
1297 else
1298#endif
1299 {
1300 char dummy;
1301 read (evpipe [0], &dummy, 1);
1302 }
1303
1304 if (sig_pending)
1305 {
1306 sig_pending = 0;
1307
1308 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1);
1311 }
1312
1313#if EV_ASYNC_ENABLE
1314 if (async_pending)
1315 {
1316 async_pending = 0;
1317
1318 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent)
1320 {
1321 asyncs [i]->sent = 0;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 }
1324 }
1325#endif
848} 1326}
849 1327
850/*****************************************************************************/ 1328/*****************************************************************************/
851 1329
1330static void
1331ev_sighandler (int signum)
1332{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32
1338 signal (signum, ev_sighandler);
1339#endif
1340
1341 signals [signum - 1].pending = 1;
1342 evpipe_write (EV_A_ &sig_pending);
1343}
1344
1345void noinline
1346ev_feed_signal_event (EV_P_ int signum)
1347{
1348 WL w;
1349
1350 if (expect_false (signum <= 0 || signum > EV_NSIG))
1351 return;
1352
1353 --signum;
1354
1355#if EV_MULTIPLICITY
1356 /* it is permissible to try to feed a signal to the wrong loop */
1357 /* or, likely more useful, feeding a signal nobody is waiting for */
1358
1359 if (expect_false (signals [signum].loop != EV_A))
1360 return;
1361#endif
1362
1363 signals [signum].pending = 0;
1364
1365 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367}
1368
1369#if EV_USE_SIGNALFD
1370static void
1371sigfdcb (EV_P_ ev_io *iow, int revents)
1372{
1373 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1374
1375 for (;;)
1376 {
1377 ssize_t res = read (sigfd, si, sizeof (si));
1378
1379 /* not ISO-C, as res might be -1, but works with SuS */
1380 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1381 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1382
1383 if (res < (ssize_t)sizeof (si))
1384 break;
1385 }
1386}
1387#endif
1388
1389#endif
1390
1391/*****************************************************************************/
1392
1393#if EV_CHILD_ENABLE
852static WL childs [EV_PID_HASHSIZE]; 1394static WL childs [EV_PID_HASHSIZE];
853 1395
854#ifndef _WIN32
855
856static ev_signal childev; 1396static ev_signal childev;
857 1397
858void inline_speed 1398#ifndef WIFCONTINUED
1399# define WIFCONTINUED(status) 0
1400#endif
1401
1402/* handle a single child status event */
1403inline_speed void
859child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1404child_reap (EV_P_ int chain, int pid, int status)
860{ 1405{
861 ev_child *w; 1406 ev_child *w;
1407 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
862 1408
863 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1409 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1410 {
864 if (w->pid == pid || !w->pid) 1411 if ((w->pid == pid || !w->pid)
1412 && (!traced || (w->flags & 1)))
865 { 1413 {
866 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1414 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
867 w->rpid = pid; 1415 w->rpid = pid;
868 w->rstatus = status; 1416 w->rstatus = status;
869 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1417 ev_feed_event (EV_A_ (W)w, EV_CHILD);
870 } 1418 }
1419 }
871} 1420}
872 1421
873#ifndef WCONTINUED 1422#ifndef WCONTINUED
874# define WCONTINUED 0 1423# define WCONTINUED 0
875#endif 1424#endif
876 1425
1426/* called on sigchld etc., calls waitpid */
877static void 1427static void
878childcb (EV_P_ ev_signal *sw, int revents) 1428childcb (EV_P_ ev_signal *sw, int revents)
879{ 1429{
880 int pid, status; 1430 int pid, status;
881 1431
… …
884 if (!WCONTINUED 1434 if (!WCONTINUED
885 || errno != EINVAL 1435 || errno != EINVAL
886 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1436 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887 return; 1437 return;
888 1438
889 /* make sure we are called again until all childs have been reaped */ 1439 /* make sure we are called again until all children have been reaped */
890 /* we need to do it this way so that the callback gets called before we continue */ 1440 /* we need to do it this way so that the callback gets called before we continue */
891 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1441 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
892 1442
893 child_reap (EV_A_ sw, pid, pid, status); 1443 child_reap (EV_A_ pid, pid, status);
894 if (EV_PID_HASHSIZE > 1) 1444 if ((EV_PID_HASHSIZE) > 1)
895 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1445 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
896} 1446}
897 1447
898#endif 1448#endif
899 1449
900/*****************************************************************************/ 1450/*****************************************************************************/
… …
962 /* kqueue is borked on everything but netbsd apparently */ 1512 /* kqueue is borked on everything but netbsd apparently */
963 /* it usually doesn't work correctly on anything but sockets and pipes */ 1513 /* it usually doesn't work correctly on anything but sockets and pipes */
964 flags &= ~EVBACKEND_KQUEUE; 1514 flags &= ~EVBACKEND_KQUEUE;
965#endif 1515#endif
966#ifdef __APPLE__ 1516#ifdef __APPLE__
967 // flags &= ~EVBACKEND_KQUEUE; for documentation 1517 /* only select works correctly on that "unix-certified" platform */
968 flags &= ~EVBACKEND_POLL; 1518 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1519 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1520#endif
1521#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
969#endif 1523#endif
970 1524
971 return flags; 1525 return flags;
972} 1526}
973 1527
974unsigned int 1528unsigned int
975ev_embeddable_backends (void) 1529ev_embeddable_backends (void)
976{ 1530{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532
977 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
978 return EVBACKEND_KQUEUE 1534 /* please fix it and tell me how to detect the fix */
979 | EVBACKEND_PORT; 1535 flags &= ~EVBACKEND_EPOLL;
1536
1537 return flags;
980} 1538}
981 1539
982unsigned int 1540unsigned int
983ev_backend (EV_P) 1541ev_backend (EV_P)
984{ 1542{
985 return backend; 1543 return backend;
986} 1544}
987 1545
1546#if EV_FEATURE_API
988unsigned int 1547unsigned int
989ev_loop_count (EV_P) 1548ev_iteration (EV_P)
990{ 1549{
991 return loop_count; 1550 return loop_count;
992} 1551}
993 1552
1553unsigned int
1554ev_depth (EV_P)
1555{
1556 return loop_depth;
1557}
1558
994void 1559void
995ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
996{ 1561{
997 io_blocktime = interval; 1562 io_blocktime = interval;
998} 1563}
… …
1001ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1002{ 1567{
1003 timeout_blocktime = interval; 1568 timeout_blocktime = interval;
1004} 1569}
1005 1570
1571void
1572ev_set_userdata (EV_P_ void *data)
1573{
1574 userdata = data;
1575}
1576
1577void *
1578ev_userdata (EV_P)
1579{
1580 return userdata;
1581}
1582
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584{
1585 invoke_cb = invoke_pending_cb;
1586}
1587
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589{
1590 release_cb = release;
1591 acquire_cb = acquire;
1592}
1593#endif
1594
1595/* initialise a loop structure, must be zero-initialised */
1006static void noinline 1596static void noinline
1007loop_init (EV_P_ unsigned int flags) 1597loop_init (EV_P_ unsigned int flags)
1008{ 1598{
1009 if (!backend) 1599 if (!backend)
1010 { 1600 {
1601#if EV_USE_REALTIME
1602 if (!have_realtime)
1603 {
1604 struct timespec ts;
1605
1606 if (!clock_gettime (CLOCK_REALTIME, &ts))
1607 have_realtime = 1;
1608 }
1609#endif
1610
1011#if EV_USE_MONOTONIC 1611#if EV_USE_MONOTONIC
1612 if (!have_monotonic)
1012 { 1613 {
1013 struct timespec ts; 1614 struct timespec ts;
1615
1014 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1616 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1015 have_monotonic = 1; 1617 have_monotonic = 1;
1016 } 1618 }
1017#endif 1619#endif
1018
1019 ev_rt_now = ev_time ();
1020 mn_now = get_clock ();
1021 now_floor = mn_now;
1022 rtmn_diff = ev_rt_now - mn_now;
1023
1024 io_blocktime = 0.;
1025 timeout_blocktime = 0.;
1026 1620
1027 /* pid check not overridable via env */ 1621 /* pid check not overridable via env */
1028#ifndef _WIN32 1622#ifndef _WIN32
1029 if (flags & EVFLAG_FORKCHECK) 1623 if (flags & EVFLAG_FORKCHECK)
1030 curpid = getpid (); 1624 curpid = getpid ();
… …
1033 if (!(flags & EVFLAG_NOENV) 1627 if (!(flags & EVFLAG_NOENV)
1034 && !enable_secure () 1628 && !enable_secure ()
1035 && getenv ("LIBEV_FLAGS")) 1629 && getenv ("LIBEV_FLAGS"))
1036 flags = atoi (getenv ("LIBEV_FLAGS")); 1630 flags = atoi (getenv ("LIBEV_FLAGS"));
1037 1631
1632 ev_rt_now = ev_time ();
1633 mn_now = get_clock ();
1634 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending;
1638#endif
1639
1640 io_blocktime = 0.;
1641 timeout_blocktime = 0.;
1642 backend = 0;
1643 backend_fd = -1;
1644 sig_pending = 0;
1645#if EV_ASYNC_ENABLE
1646 async_pending = 0;
1647#endif
1648#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif
1651#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif
1654
1038 if (!(flags & 0x0000ffffUL)) 1655 if (!(flags & 0x0000ffffU))
1039 flags |= ev_recommended_backends (); 1656 flags |= ev_recommended_backends ();
1040
1041 backend = 0;
1042 backend_fd = -1;
1043#if EV_USE_INOTIFY
1044 fs_fd = -2;
1045#endif
1046 1657
1047#if EV_USE_PORT 1658#if EV_USE_PORT
1048 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1049#endif 1660#endif
1050#if EV_USE_KQUEUE 1661#if EV_USE_KQUEUE
… …
1058#endif 1669#endif
1059#if EV_USE_SELECT 1670#if EV_USE_SELECT
1060 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1061#endif 1672#endif
1062 1673
1674 ev_prepare_init (&pending_w, pendingcb);
1675
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1063 ev_init (&sigev, sigcb); 1677 ev_init (&pipe_w, pipecb);
1064 ev_set_priority (&sigev, EV_MAXPRI); 1678 ev_set_priority (&pipe_w, EV_MAXPRI);
1679#endif
1065 } 1680 }
1066} 1681}
1067 1682
1683/* free up a loop structure */
1068static void noinline 1684static void noinline
1069loop_destroy (EV_P) 1685loop_destroy (EV_P)
1070{ 1686{
1071 int i; 1687 int i;
1688
1689 if (ev_is_active (&pipe_w))
1690 {
1691 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/
1693
1694#if EV_USE_EVENTFD
1695 if (evfd >= 0)
1696 close (evfd);
1697#endif
1698
1699 if (evpipe [0] >= 0)
1700 {
1701 EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 }
1705
1706#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w))
1708 close (sigfd);
1709#endif
1072 1710
1073#if EV_USE_INOTIFY 1711#if EV_USE_INOTIFY
1074 if (fs_fd >= 0) 1712 if (fs_fd >= 0)
1075 close (fs_fd); 1713 close (fs_fd);
1076#endif 1714#endif
… …
1100#if EV_IDLE_ENABLE 1738#if EV_IDLE_ENABLE
1101 array_free (idle, [i]); 1739 array_free (idle, [i]);
1102#endif 1740#endif
1103 } 1741 }
1104 1742
1105 ev_free (anfds); anfdmax = 0; 1743 ev_free (anfds); anfds = 0; anfdmax = 0;
1106 1744
1107 /* have to use the microsoft-never-gets-it-right macro */ 1745 /* have to use the microsoft-never-gets-it-right macro */
1746 array_free (rfeed, EMPTY);
1108 array_free (fdchange, EMPTY); 1747 array_free (fdchange, EMPTY);
1109 array_free (timer, EMPTY); 1748 array_free (timer, EMPTY);
1110#if EV_PERIODIC_ENABLE 1749#if EV_PERIODIC_ENABLE
1111 array_free (periodic, EMPTY); 1750 array_free (periodic, EMPTY);
1112#endif 1751#endif
1113#if EV_FORK_ENABLE 1752#if EV_FORK_ENABLE
1114 array_free (fork, EMPTY); 1753 array_free (fork, EMPTY);
1115#endif 1754#endif
1116 array_free (prepare, EMPTY); 1755 array_free (prepare, EMPTY);
1117 array_free (check, EMPTY); 1756 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY);
1759#endif
1118 1760
1119 backend = 0; 1761 backend = 0;
1120} 1762}
1121 1763
1764#if EV_USE_INOTIFY
1122void inline_size infy_fork (EV_P); 1765inline_size void infy_fork (EV_P);
1766#endif
1123 1767
1124void inline_size 1768inline_size void
1125loop_fork (EV_P) 1769loop_fork (EV_P)
1126{ 1770{
1127#if EV_USE_PORT 1771#if EV_USE_PORT
1128 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1129#endif 1773#endif
… …
1135#endif 1779#endif
1136#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1137 infy_fork (EV_A); 1781 infy_fork (EV_A);
1138#endif 1782#endif
1139 1783
1140 if (ev_is_active (&sigev)) 1784 if (ev_is_active (&pipe_w))
1141 { 1785 {
1142 /* default loop */ 1786 /* this "locks" the handlers against writing to the pipe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1143 1792
1144 ev_ref (EV_A); 1793 ev_ref (EV_A);
1145 ev_io_stop (EV_A_ &sigev); 1794 ev_io_stop (EV_A_ &pipe_w);
1146 close (sigpipe [0]);
1147 close (sigpipe [1]);
1148 1795
1149 while (pipe (sigpipe)) 1796#if EV_USE_EVENTFD
1150 syserr ("(libev) error creating pipe"); 1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1151 1800
1801 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1805 }
1806
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1152 siginit (EV_A); 1808 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */
1810 pipecb (EV_A_ &pipe_w, EV_READ);
1811#endif
1153 } 1812 }
1154 1813
1155 postfork = 0; 1814 postfork = 0;
1156} 1815}
1157 1816
1158#if EV_MULTIPLICITY 1817#if EV_MULTIPLICITY
1818
1159struct ev_loop * 1819struct ev_loop *
1160ev_loop_new (unsigned int flags) 1820ev_loop_new (unsigned int flags)
1161{ 1821{
1162 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1163 1823
1164 memset (loop, 0, sizeof (struct ev_loop)); 1824 memset (EV_A, 0, sizeof (struct ev_loop));
1165
1166 loop_init (EV_A_ flags); 1825 loop_init (EV_A_ flags);
1167 1826
1168 if (ev_backend (EV_A)) 1827 if (ev_backend (EV_A))
1169 return loop; 1828 return EV_A;
1170 1829
1171 return 0; 1830 return 0;
1172} 1831}
1173 1832
1174void 1833void
… …
1179} 1838}
1180 1839
1181void 1840void
1182ev_loop_fork (EV_P) 1841ev_loop_fork (EV_P)
1183{ 1842{
1184 postfork = 1; 1843 postfork = 1; /* must be in line with ev_default_fork */
1185} 1844}
1845#endif /* multiplicity */
1186 1846
1847#if EV_VERIFY
1848static void noinline
1849verify_watcher (EV_P_ W w)
1850{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852
1853 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855}
1856
1857static void noinline
1858verify_heap (EV_P_ ANHE *heap, int N)
1859{
1860 int i;
1861
1862 for (i = HEAP0; i < N + HEAP0; ++i)
1863 {
1864 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1865 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1866 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1867
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 }
1870}
1871
1872static void noinline
1873array_verify (EV_P_ W *ws, int cnt)
1874{
1875 while (cnt--)
1876 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1878 verify_watcher (EV_A_ ws [cnt]);
1879 }
1880}
1881#endif
1882
1883#if EV_FEATURE_API
1884void
1885ev_verify (EV_P)
1886{
1887#if EV_VERIFY
1888 int i;
1889 WL w;
1890
1891 assert (activecnt >= -1);
1892
1893 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896
1897 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i)
1899 for (w = anfds [i].head; w; w = w->next)
1900 {
1901 verify_watcher (EV_A_ (W)w);
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 }
1905
1906 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt);
1908
1909#if EV_PERIODIC_ENABLE
1910 assert (periodicmax >= periodiccnt);
1911 verify_heap (EV_A_ periodics, periodiccnt);
1912#endif
1913
1914 for (i = NUMPRI; i--; )
1915 {
1916 assert (pendingmax [i] >= pendingcnt [i]);
1917#if EV_IDLE_ENABLE
1918 assert (idleall >= 0);
1919 assert (idlemax [i] >= idlecnt [i]);
1920 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1921#endif
1922 }
1923
1924#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif
1928
1929#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif
1933
1934#if EV_PREPARE_ENABLE
1935 assert (preparemax >= preparecnt);
1936 array_verify (EV_A_ (W *)prepares, preparecnt);
1937#endif
1938
1939#if EV_CHECK_ENABLE
1940 assert (checkmax >= checkcnt);
1941 array_verify (EV_A_ (W *)checks, checkcnt);
1942#endif
1943
1944# if 0
1945#if EV_CHILD_ENABLE
1946 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1947 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1948#endif
1949# endif
1950#endif
1951}
1187#endif 1952#endif
1188 1953
1189#if EV_MULTIPLICITY 1954#if EV_MULTIPLICITY
1190struct ev_loop * 1955struct ev_loop *
1191ev_default_loop_init (unsigned int flags) 1956ev_default_loop_init (unsigned int flags)
1192#else 1957#else
1193int 1958int
1194ev_default_loop (unsigned int flags) 1959ev_default_loop (unsigned int flags)
1195#endif 1960#endif
1196{ 1961{
1197 if (sigpipe [0] == sigpipe [1])
1198 if (pipe (sigpipe))
1199 return 0;
1200
1201 if (!ev_default_loop_ptr) 1962 if (!ev_default_loop_ptr)
1202 { 1963 {
1203#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1204 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1965 EV_P = ev_default_loop_ptr = &default_loop_struct;
1205#else 1966#else
1206 ev_default_loop_ptr = 1; 1967 ev_default_loop_ptr = 1;
1207#endif 1968#endif
1208 1969
1209 loop_init (EV_A_ flags); 1970 loop_init (EV_A_ flags);
1210 1971
1211 if (ev_backend (EV_A)) 1972 if (ev_backend (EV_A))
1212 { 1973 {
1213 siginit (EV_A); 1974#if EV_CHILD_ENABLE
1214
1215#ifndef _WIN32
1216 ev_signal_init (&childev, childcb, SIGCHLD); 1975 ev_signal_init (&childev, childcb, SIGCHLD);
1217 ev_set_priority (&childev, EV_MAXPRI); 1976 ev_set_priority (&childev, EV_MAXPRI);
1218 ev_signal_start (EV_A_ &childev); 1977 ev_signal_start (EV_A_ &childev);
1219 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1978 ev_unref (EV_A); /* child watcher should not keep loop alive */
1220#endif 1979#endif
… …
1228 1987
1229void 1988void
1230ev_default_destroy (void) 1989ev_default_destroy (void)
1231{ 1990{
1232#if EV_MULTIPLICITY 1991#if EV_MULTIPLICITY
1233 struct ev_loop *loop = ev_default_loop_ptr; 1992 EV_P = ev_default_loop_ptr;
1234#endif 1993#endif
1235 1994
1236#ifndef _WIN32 1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1237 ev_ref (EV_A); /* child watcher */ 1998 ev_ref (EV_A); /* child watcher */
1238 ev_signal_stop (EV_A_ &childev); 1999 ev_signal_stop (EV_A_ &childev);
1239#endif 2000#endif
1240 2001
1241 ev_ref (EV_A); /* signal watcher */
1242 ev_io_stop (EV_A_ &sigev);
1243
1244 close (sigpipe [0]); sigpipe [0] = 0;
1245 close (sigpipe [1]); sigpipe [1] = 0;
1246
1247 loop_destroy (EV_A); 2002 loop_destroy (EV_A);
1248} 2003}
1249 2004
1250void 2005void
1251ev_default_fork (void) 2006ev_default_fork (void)
1252{ 2007{
1253#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
1254 struct ev_loop *loop = ev_default_loop_ptr; 2009 EV_P = ev_default_loop_ptr;
1255#endif 2010#endif
1256 2011
1257 if (backend) 2012 postfork = 1; /* must be in line with ev_loop_fork */
1258 postfork = 1;
1259} 2013}
1260 2014
1261/*****************************************************************************/ 2015/*****************************************************************************/
1262 2016
1263void 2017void
1264ev_invoke (EV_P_ void *w, int revents) 2018ev_invoke (EV_P_ void *w, int revents)
1265{ 2019{
1266 EV_CB_INVOKE ((W)w, revents); 2020 EV_CB_INVOKE ((W)w, revents);
1267} 2021}
1268 2022
1269void inline_speed 2023unsigned int
1270call_pending (EV_P) 2024ev_pending_count (EV_P)
2025{
2026 int pri;
2027 unsigned int count = 0;
2028
2029 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri];
2031
2032 return count;
2033}
2034
2035void noinline
2036ev_invoke_pending (EV_P)
1271{ 2037{
1272 int pri; 2038 int pri;
1273 2039
1274 for (pri = NUMPRI; pri--; ) 2040 for (pri = NUMPRI; pri--; )
1275 while (pendingcnt [pri]) 2041 while (pendingcnt [pri])
1276 { 2042 {
1277 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1278 2044
1279 if (expect_true (p->w))
1280 {
1281 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
1282 2047
1283 p->w->pending = 0; 2048 p->w->pending = 0;
1284 EV_CB_INVOKE (p->w, p->events); 2049 EV_CB_INVOKE (p->w, p->events);
1285 } 2050 EV_FREQUENT_CHECK;
1286 } 2051 }
1287} 2052}
1288 2053
1289void inline_size
1290timers_reify (EV_P)
1291{
1292 while (timercnt && ((WT)timers [0])->at <= mn_now)
1293 {
1294 ev_timer *w = (ev_timer *)timers [0];
1295
1296 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1297
1298 /* first reschedule or stop timer */
1299 if (w->repeat)
1300 {
1301 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1302
1303 ((WT)w)->at += w->repeat;
1304 if (((WT)w)->at < mn_now)
1305 ((WT)w)->at = mn_now;
1306
1307 downheap (timers, timercnt, 0);
1308 }
1309 else
1310 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1311
1312 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1313 }
1314}
1315
1316#if EV_PERIODIC_ENABLE
1317void inline_size
1318periodics_reify (EV_P)
1319{
1320 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1321 {
1322 ev_periodic *w = (ev_periodic *)periodics [0];
1323
1324 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1325
1326 /* first reschedule or stop timer */
1327 if (w->reschedule_cb)
1328 {
1329 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1330 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1331 downheap (periodics, periodiccnt, 0);
1332 }
1333 else if (w->interval)
1334 {
1335 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1336 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1337 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1338 downheap (periodics, periodiccnt, 0);
1339 }
1340 else
1341 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1342
1343 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1344 }
1345}
1346
1347static void noinline
1348periodics_reschedule (EV_P)
1349{
1350 int i;
1351
1352 /* adjust periodics after time jump */
1353 for (i = 0; i < periodiccnt; ++i)
1354 {
1355 ev_periodic *w = (ev_periodic *)periodics [i];
1356
1357 if (w->reschedule_cb)
1358 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1359 else if (w->interval)
1360 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1361 }
1362
1363 /* now rebuild the heap */
1364 for (i = periodiccnt >> 1; i--; )
1365 downheap (periodics, periodiccnt, i);
1366}
1367#endif
1368
1369#if EV_IDLE_ENABLE 2054#if EV_IDLE_ENABLE
1370void inline_size 2055/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */
2057inline_size void
1371idle_reify (EV_P) 2058idle_reify (EV_P)
1372{ 2059{
1373 if (expect_false (idleall)) 2060 if (expect_false (idleall))
1374 { 2061 {
1375 int pri; 2062 int pri;
… …
1387 } 2074 }
1388 } 2075 }
1389} 2076}
1390#endif 2077#endif
1391 2078
1392void inline_speed 2079/* make timers pending */
2080inline_size void
2081timers_reify (EV_P)
2082{
2083 EV_FREQUENT_CHECK;
2084
2085 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2086 {
2087 do
2088 {
2089 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2090
2091 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2092
2093 /* first reschedule or stop timer */
2094 if (w->repeat)
2095 {
2096 ev_at (w) += w->repeat;
2097 if (ev_at (w) < mn_now)
2098 ev_at (w) = mn_now;
2099
2100 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2101
2102 ANHE_at_cache (timers [HEAP0]);
2103 downheap (timers, timercnt, HEAP0);
2104 }
2105 else
2106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2107
2108 EV_FREQUENT_CHECK;
2109 feed_reverse (EV_A_ (W)w);
2110 }
2111 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2112
2113 feed_reverse_done (EV_A_ EV_TIMER);
2114 }
2115}
2116
2117#if EV_PERIODIC_ENABLE
2118/* make periodics pending */
2119inline_size void
2120periodics_reify (EV_P)
2121{
2122 EV_FREQUENT_CHECK;
2123
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 {
2126 int feed_count = 0;
2127
2128 do
2129 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2133
2134 /* first reschedule or stop timer */
2135 if (w->reschedule_cb)
2136 {
2137 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2138
2139 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2140
2141 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0);
2143 }
2144 else if (w->interval)
2145 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0);
2162 }
2163 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2165
2166 EV_FREQUENT_CHECK;
2167 feed_reverse (EV_A_ (W)w);
2168 }
2169 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2170
2171 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 }
2173}
2174
2175/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2177static void noinline
2178periodics_reschedule (EV_P)
2179{
2180 int i;
2181
2182 /* adjust periodics after time jump */
2183 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2184 {
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186
2187 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2191
2192 ANHE_at_cache (periodics [i]);
2193 }
2194
2195 reheap (periodics, periodiccnt);
2196}
2197#endif
2198
2199/* adjust all timers by a given offset */
2200static void noinline
2201timers_reschedule (EV_P_ ev_tstamp adjust)
2202{
2203 int i;
2204
2205 for (i = 0; i < timercnt; ++i)
2206 {
2207 ANHE *he = timers + i + HEAP0;
2208 ANHE_w (*he)->at += adjust;
2209 ANHE_at_cache (*he);
2210 }
2211}
2212
2213/* fetch new monotonic and realtime times from the kernel */
2214/* also detect if there was a timejump, and act accordingly */
2215inline_speed void
1393time_update (EV_P_ ev_tstamp max_block) 2216time_update (EV_P_ ev_tstamp max_block)
1394{ 2217{
1395 int i;
1396
1397#if EV_USE_MONOTONIC 2218#if EV_USE_MONOTONIC
1398 if (expect_true (have_monotonic)) 2219 if (expect_true (have_monotonic))
1399 { 2220 {
2221 int i;
1400 ev_tstamp odiff = rtmn_diff; 2222 ev_tstamp odiff = rtmn_diff;
1401 2223
1402 mn_now = get_clock (); 2224 mn_now = get_clock ();
1403 2225
1404 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1422 */ 2244 */
1423 for (i = 4; --i; ) 2245 for (i = 4; --i; )
1424 { 2246 {
1425 rtmn_diff = ev_rt_now - mn_now; 2247 rtmn_diff = ev_rt_now - mn_now;
1426 2248
1427 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1428 return; /* all is well */ 2250 return; /* all is well */
1429 2251
1430 ev_rt_now = ev_time (); 2252 ev_rt_now = ev_time ();
1431 mn_now = get_clock (); 2253 mn_now = get_clock ();
1432 now_floor = mn_now; 2254 now_floor = mn_now;
1433 } 2255 }
1434 2256
2257 /* no timer adjustment, as the monotonic clock doesn't jump */
2258 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1435# if EV_PERIODIC_ENABLE 2259# if EV_PERIODIC_ENABLE
1436 periodics_reschedule (EV_A); 2260 periodics_reschedule (EV_A);
1437# endif 2261# endif
1438 /* no timer adjustment, as the monotonic clock doesn't jump */
1439 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1440 } 2262 }
1441 else 2263 else
1442#endif 2264#endif
1443 { 2265 {
1444 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1445 2267
1446 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2268 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1447 { 2269 {
2270 /* adjust timers. this is easy, as the offset is the same for all of them */
2271 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1448#if EV_PERIODIC_ENABLE 2272#if EV_PERIODIC_ENABLE
1449 periodics_reschedule (EV_A); 2273 periodics_reschedule (EV_A);
1450#endif 2274#endif
1451 /* adjust timers. this is easy, as the offset is the same for all of them */
1452 for (i = 0; i < timercnt; ++i)
1453 ((WT)timers [i])->at += ev_rt_now - mn_now;
1454 } 2275 }
1455 2276
1456 mn_now = ev_rt_now; 2277 mn_now = ev_rt_now;
1457 } 2278 }
1458} 2279}
1459 2280
1460void 2281void
1461ev_ref (EV_P)
1462{
1463 ++activecnt;
1464}
1465
1466void
1467ev_unref (EV_P)
1468{
1469 --activecnt;
1470}
1471
1472static int loop_done;
1473
1474void
1475ev_loop (EV_P_ int flags) 2282ev_loop (EV_P_ int flags)
1476{ 2283{
1477 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2284#if EV_FEATURE_API
1478 ? EVUNLOOP_ONE 2285 ++loop_depth;
1479 : EVUNLOOP_CANCEL; 2286#endif
1480 2287
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2289
2290 loop_done = EVUNLOOP_CANCEL;
2291
1481 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1482 2293
1483 do 2294 do
1484 { 2295 {
2296#if EV_VERIFY >= 2
2297 ev_verify (EV_A);
2298#endif
2299
1485#ifndef _WIN32 2300#ifndef _WIN32
1486 if (expect_false (curpid)) /* penalise the forking check even more */ 2301 if (expect_false (curpid)) /* penalise the forking check even more */
1487 if (expect_false (getpid () != curpid)) 2302 if (expect_false (getpid () != curpid))
1488 { 2303 {
1489 curpid = getpid (); 2304 curpid = getpid ();
… …
1495 /* we might have forked, so queue fork handlers */ 2310 /* we might have forked, so queue fork handlers */
1496 if (expect_false (postfork)) 2311 if (expect_false (postfork))
1497 if (forkcnt) 2312 if (forkcnt)
1498 { 2313 {
1499 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1500 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
1501 } 2316 }
1502#endif 2317#endif
1503 2318
2319#if EV_PREPARE_ENABLE
1504 /* queue prepare watchers (and execute them) */ 2320 /* queue prepare watchers (and execute them) */
1505 if (expect_false (preparecnt)) 2321 if (expect_false (preparecnt))
1506 { 2322 {
1507 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1508 call_pending (EV_A); 2324 EV_INVOKE_PENDING;
1509 } 2325 }
2326#endif
1510 2327
1511 if (expect_false (!activecnt)) 2328 if (expect_false (loop_done))
1512 break; 2329 break;
1513 2330
1514 /* we might have forked, so reify kernel state if necessary */ 2331 /* we might have forked, so reify kernel state if necessary */
1515 if (expect_false (postfork)) 2332 if (expect_false (postfork))
1516 loop_fork (EV_A); 2333 loop_fork (EV_A);
… …
1523 ev_tstamp waittime = 0.; 2340 ev_tstamp waittime = 0.;
1524 ev_tstamp sleeptime = 0.; 2341 ev_tstamp sleeptime = 0.;
1525 2342
1526 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1527 { 2344 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
1528 /* update time to cancel out callback processing overhead */ 2348 /* update time to cancel out callback processing overhead */
1529 time_update (EV_A_ 1e100); 2349 time_update (EV_A_ 1e100);
1530 2350
1531 waittime = MAX_BLOCKTIME; 2351 waittime = MAX_BLOCKTIME;
1532 2352
1533 if (timercnt) 2353 if (timercnt)
1534 { 2354 {
1535 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1536 if (waittime > to) waittime = to; 2356 if (waittime > to) waittime = to;
1537 } 2357 }
1538 2358
1539#if EV_PERIODIC_ENABLE 2359#if EV_PERIODIC_ENABLE
1540 if (periodiccnt) 2360 if (periodiccnt)
1541 { 2361 {
1542 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1543 if (waittime > to) waittime = to; 2363 if (waittime > to) waittime = to;
1544 } 2364 }
1545#endif 2365#endif
1546 2366
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */
1547 if (expect_false (waittime < timeout_blocktime)) 2368 if (expect_false (waittime < timeout_blocktime))
1548 waittime = timeout_blocktime; 2369 waittime = timeout_blocktime;
1549 2370
1550 sleeptime = waittime - backend_fudge; 2371 /* extra check because io_blocktime is commonly 0 */
1551
1552 if (expect_true (sleeptime > io_blocktime)) 2372 if (expect_false (io_blocktime))
1553 sleeptime = io_blocktime;
1554
1555 if (sleeptime)
1556 { 2373 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375
2376 if (sleeptime > waittime - backend_fudge)
2377 sleeptime = waittime - backend_fudge;
2378
2379 if (expect_true (sleeptime > 0.))
2380 {
1557 ev_sleep (sleeptime); 2381 ev_sleep (sleeptime);
1558 waittime -= sleeptime; 2382 waittime -= sleeptime;
2383 }
1559 } 2384 }
1560 } 2385 }
1561 2386
2387#if EV_FEATURE_API
1562 ++loop_count; 2388 ++loop_count;
2389#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1563 backend_poll (EV_A_ waittime); 2391 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1564 2393
1565 /* update ev_rt_now, do magic */ 2394 /* update ev_rt_now, do magic */
1566 time_update (EV_A_ waittime + sleeptime); 2395 time_update (EV_A_ waittime + sleeptime);
1567 } 2396 }
1568 2397
… …
1575#if EV_IDLE_ENABLE 2404#if EV_IDLE_ENABLE
1576 /* queue idle watchers unless other events are pending */ 2405 /* queue idle watchers unless other events are pending */
1577 idle_reify (EV_A); 2406 idle_reify (EV_A);
1578#endif 2407#endif
1579 2408
2409#if EV_CHECK_ENABLE
1580 /* queue check watchers, to be executed first */ 2410 /* queue check watchers, to be executed first */
1581 if (expect_false (checkcnt)) 2411 if (expect_false (checkcnt))
1582 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif
1583 2414
1584 call_pending (EV_A); 2415 EV_INVOKE_PENDING;
1585
1586 } 2416 }
1587 while (expect_true (activecnt && !loop_done)); 2417 while (expect_true (
2418 activecnt
2419 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2421 ));
1588 2422
1589 if (loop_done == EVUNLOOP_ONE) 2423 if (loop_done == EVUNLOOP_ONE)
1590 loop_done = EVUNLOOP_CANCEL; 2424 loop_done = EVUNLOOP_CANCEL;
2425
2426#if EV_FEATURE_API
2427 --loop_depth;
2428#endif
1591} 2429}
1592 2430
1593void 2431void
1594ev_unloop (EV_P_ int how) 2432ev_unloop (EV_P_ int how)
1595{ 2433{
1596 loop_done = how; 2434 loop_done = how;
1597} 2435}
1598 2436
2437void
2438ev_ref (EV_P)
2439{
2440 ++activecnt;
2441}
2442
2443void
2444ev_unref (EV_P)
2445{
2446 --activecnt;
2447}
2448
2449void
2450ev_now_update (EV_P)
2451{
2452 time_update (EV_A_ 1e100);
2453}
2454
2455void
2456ev_suspend (EV_P)
2457{
2458 ev_now_update (EV_A);
2459}
2460
2461void
2462ev_resume (EV_P)
2463{
2464 ev_tstamp mn_prev = mn_now;
2465
2466 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev);
2468#if EV_PERIODIC_ENABLE
2469 /* TODO: really do this? */
2470 periodics_reschedule (EV_A);
2471#endif
2472}
2473
1599/*****************************************************************************/ 2474/*****************************************************************************/
2475/* singly-linked list management, used when the expected list length is short */
1600 2476
1601void inline_size 2477inline_size void
1602wlist_add (WL *head, WL elem) 2478wlist_add (WL *head, WL elem)
1603{ 2479{
1604 elem->next = *head; 2480 elem->next = *head;
1605 *head = elem; 2481 *head = elem;
1606} 2482}
1607 2483
1608void inline_size 2484inline_size void
1609wlist_del (WL *head, WL elem) 2485wlist_del (WL *head, WL elem)
1610{ 2486{
1611 while (*head) 2487 while (*head)
1612 { 2488 {
1613 if (*head == elem) 2489 if (expect_true (*head == elem))
1614 { 2490 {
1615 *head = elem->next; 2491 *head = elem->next;
1616 return; 2492 break;
1617 } 2493 }
1618 2494
1619 head = &(*head)->next; 2495 head = &(*head)->next;
1620 } 2496 }
1621} 2497}
1622 2498
1623void inline_speed 2499/* internal, faster, version of ev_clear_pending */
2500inline_speed void
1624clear_pending (EV_P_ W w) 2501clear_pending (EV_P_ W w)
1625{ 2502{
1626 if (w->pending) 2503 if (w->pending)
1627 { 2504 {
1628 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2505 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1629 w->pending = 0; 2506 w->pending = 0;
1630 } 2507 }
1631} 2508}
1632 2509
1633int 2510int
… …
1637 int pending = w_->pending; 2514 int pending = w_->pending;
1638 2515
1639 if (expect_true (pending)) 2516 if (expect_true (pending))
1640 { 2517 {
1641 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w;
1642 w_->pending = 0; 2520 w_->pending = 0;
1643 p->w = 0;
1644 return p->events; 2521 return p->events;
1645 } 2522 }
1646 else 2523 else
1647 return 0; 2524 return 0;
1648} 2525}
1649 2526
1650void inline_size 2527inline_size void
1651pri_adjust (EV_P_ W w) 2528pri_adjust (EV_P_ W w)
1652{ 2529{
1653 int pri = w->priority; 2530 int pri = ev_priority (w);
1654 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2531 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1655 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2532 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1656 w->priority = pri; 2533 ev_set_priority (w, pri);
1657} 2534}
1658 2535
1659void inline_speed 2536inline_speed void
1660ev_start (EV_P_ W w, int active) 2537ev_start (EV_P_ W w, int active)
1661{ 2538{
1662 pri_adjust (EV_A_ w); 2539 pri_adjust (EV_A_ w);
1663 w->active = active; 2540 w->active = active;
1664 ev_ref (EV_A); 2541 ev_ref (EV_A);
1665} 2542}
1666 2543
1667void inline_size 2544inline_size void
1668ev_stop (EV_P_ W w) 2545ev_stop (EV_P_ W w)
1669{ 2546{
1670 ev_unref (EV_A); 2547 ev_unref (EV_A);
1671 w->active = 0; 2548 w->active = 0;
1672} 2549}
… …
1679 int fd = w->fd; 2556 int fd = w->fd;
1680 2557
1681 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
1682 return; 2559 return;
1683 2560
1684 assert (("ev_io_start called with negative fd", fd >= 0)); 2561 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2563
2564 EV_FREQUENT_CHECK;
1685 2565
1686 ev_start (EV_A_ (W)w, 1); 2566 ev_start (EV_A_ (W)w, 1);
1687 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1688 wlist_add (&anfds[fd].head, (WL)w); 2568 wlist_add (&anfds[fd].head, (WL)w);
1689 2569
1690 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1691 w->events &= ~EV_IOFDSET; 2571 w->events &= ~EV__IOFDSET;
2572
2573 EV_FREQUENT_CHECK;
1692} 2574}
1693 2575
1694void noinline 2576void noinline
1695ev_io_stop (EV_P_ ev_io *w) 2577ev_io_stop (EV_P_ ev_io *w)
1696{ 2578{
1697 clear_pending (EV_A_ (W)w); 2579 clear_pending (EV_A_ (W)w);
1698 if (expect_false (!ev_is_active (w))) 2580 if (expect_false (!ev_is_active (w)))
1699 return; 2581 return;
1700 2582
1701 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2584
2585 EV_FREQUENT_CHECK;
1702 2586
1703 wlist_del (&anfds[w->fd].head, (WL)w); 2587 wlist_del (&anfds[w->fd].head, (WL)w);
1704 ev_stop (EV_A_ (W)w); 2588 ev_stop (EV_A_ (W)w);
1705 2589
1706 fd_change (EV_A_ w->fd, 1); 2590 fd_change (EV_A_ w->fd, 1);
2591
2592 EV_FREQUENT_CHECK;
1707} 2593}
1708 2594
1709void noinline 2595void noinline
1710ev_timer_start (EV_P_ ev_timer *w) 2596ev_timer_start (EV_P_ ev_timer *w)
1711{ 2597{
1712 if (expect_false (ev_is_active (w))) 2598 if (expect_false (ev_is_active (w)))
1713 return; 2599 return;
1714 2600
1715 ((WT)w)->at += mn_now; 2601 ev_at (w) += mn_now;
1716 2602
1717 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2603 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1718 2604
2605 EV_FREQUENT_CHECK;
2606
2607 ++timercnt;
1719 ev_start (EV_A_ (W)w, ++timercnt); 2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1720 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2609 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1721 timers [timercnt - 1] = (WT)w; 2610 ANHE_w (timers [ev_active (w)]) = (WT)w;
1722 upheap (timers, timercnt - 1); 2611 ANHE_at_cache (timers [ev_active (w)]);
2612 upheap (timers, ev_active (w));
1723 2613
2614 EV_FREQUENT_CHECK;
2615
1724 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1725} 2617}
1726 2618
1727void noinline 2619void noinline
1728ev_timer_stop (EV_P_ ev_timer *w) 2620ev_timer_stop (EV_P_ ev_timer *w)
1729{ 2621{
1730 clear_pending (EV_A_ (W)w); 2622 clear_pending (EV_A_ (W)w);
1731 if (expect_false (!ev_is_active (w))) 2623 if (expect_false (!ev_is_active (w)))
1732 return; 2624 return;
1733 2625
1734 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2626 EV_FREQUENT_CHECK;
1735 2627
1736 { 2628 {
1737 int active = ((W)w)->active; 2629 int active = ev_active (w);
1738 2630
2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2632
2633 --timercnt;
2634
1739 if (expect_true (--active < --timercnt)) 2635 if (expect_true (active < timercnt + HEAP0))
1740 { 2636 {
1741 timers [active] = timers [timercnt]; 2637 timers [active] = timers [timercnt + HEAP0];
1742 adjustheap (timers, timercnt, active); 2638 adjustheap (timers, timercnt, active);
1743 } 2639 }
1744 } 2640 }
1745 2641
1746 ((WT)w)->at -= mn_now; 2642 ev_at (w) -= mn_now;
1747 2643
1748 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
2645
2646 EV_FREQUENT_CHECK;
1749} 2647}
1750 2648
1751void noinline 2649void noinline
1752ev_timer_again (EV_P_ ev_timer *w) 2650ev_timer_again (EV_P_ ev_timer *w)
1753{ 2651{
2652 EV_FREQUENT_CHECK;
2653
1754 if (ev_is_active (w)) 2654 if (ev_is_active (w))
1755 { 2655 {
1756 if (w->repeat) 2656 if (w->repeat)
1757 { 2657 {
1758 ((WT)w)->at = mn_now + w->repeat; 2658 ev_at (w) = mn_now + w->repeat;
2659 ANHE_at_cache (timers [ev_active (w)]);
1759 adjustheap (timers, timercnt, ((W)w)->active - 1); 2660 adjustheap (timers, timercnt, ev_active (w));
1760 } 2661 }
1761 else 2662 else
1762 ev_timer_stop (EV_A_ w); 2663 ev_timer_stop (EV_A_ w);
1763 } 2664 }
1764 else if (w->repeat) 2665 else if (w->repeat)
1765 { 2666 {
1766 w->at = w->repeat; 2667 ev_at (w) = w->repeat;
1767 ev_timer_start (EV_A_ w); 2668 ev_timer_start (EV_A_ w);
1768 } 2669 }
2670
2671 EV_FREQUENT_CHECK;
2672}
2673
2674ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w)
2676{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1769} 2678}
1770 2679
1771#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
1772void noinline 2681void noinline
1773ev_periodic_start (EV_P_ ev_periodic *w) 2682ev_periodic_start (EV_P_ ev_periodic *w)
1774{ 2683{
1775 if (expect_false (ev_is_active (w))) 2684 if (expect_false (ev_is_active (w)))
1776 return; 2685 return;
1777 2686
1778 if (w->reschedule_cb) 2687 if (w->reschedule_cb)
1779 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780 else if (w->interval) 2689 else if (w->interval)
1781 { 2690 {
1782 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1783 /* this formula differs from the one in periodic_reify because we do not always round up */ 2692 /* this formula differs from the one in periodic_reify because we do not always round up */
1784 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1785 } 2694 }
1786 else 2695 else
1787 ((WT)w)->at = w->offset; 2696 ev_at (w) = w->offset;
1788 2697
2698 EV_FREQUENT_CHECK;
2699
2700 ++periodiccnt;
1789 ev_start (EV_A_ (W)w, ++periodiccnt); 2701 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1790 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2702 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1791 periodics [periodiccnt - 1] = (WT)w; 2703 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1792 upheap (periodics, periodiccnt - 1); 2704 ANHE_at_cache (periodics [ev_active (w)]);
2705 upheap (periodics, ev_active (w));
1793 2706
2707 EV_FREQUENT_CHECK;
2708
1794 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1795} 2710}
1796 2711
1797void noinline 2712void noinline
1798ev_periodic_stop (EV_P_ ev_periodic *w) 2713ev_periodic_stop (EV_P_ ev_periodic *w)
1799{ 2714{
1800 clear_pending (EV_A_ (W)w); 2715 clear_pending (EV_A_ (W)w);
1801 if (expect_false (!ev_is_active (w))) 2716 if (expect_false (!ev_is_active (w)))
1802 return; 2717 return;
1803 2718
1804 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2719 EV_FREQUENT_CHECK;
1805 2720
1806 { 2721 {
1807 int active = ((W)w)->active; 2722 int active = ev_active (w);
1808 2723
2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2725
2726 --periodiccnt;
2727
1809 if (expect_true (--active < --periodiccnt)) 2728 if (expect_true (active < periodiccnt + HEAP0))
1810 { 2729 {
1811 periodics [active] = periodics [periodiccnt]; 2730 periodics [active] = periodics [periodiccnt + HEAP0];
1812 adjustheap (periodics, periodiccnt, active); 2731 adjustheap (periodics, periodiccnt, active);
1813 } 2732 }
1814 } 2733 }
1815 2734
1816 ev_stop (EV_A_ (W)w); 2735 ev_stop (EV_A_ (W)w);
2736
2737 EV_FREQUENT_CHECK;
1817} 2738}
1818 2739
1819void noinline 2740void noinline
1820ev_periodic_again (EV_P_ ev_periodic *w) 2741ev_periodic_again (EV_P_ ev_periodic *w)
1821{ 2742{
… …
1827 2748
1828#ifndef SA_RESTART 2749#ifndef SA_RESTART
1829# define SA_RESTART 0 2750# define SA_RESTART 0
1830#endif 2751#endif
1831 2752
2753#if EV_SIGNAL_ENABLE
2754
1832void noinline 2755void noinline
1833ev_signal_start (EV_P_ ev_signal *w) 2756ev_signal_start (EV_P_ ev_signal *w)
1834{ 2757{
1835#if EV_MULTIPLICITY
1836 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1837#endif
1838 if (expect_false (ev_is_active (w))) 2758 if (expect_false (ev_is_active (w)))
1839 return; 2759 return;
1840 2760
1841 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1842 2762
2763#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766
2767 signals [w->signum - 1].loop = EV_A;
2768#endif
2769
2770 EV_FREQUENT_CHECK;
2771
2772#if EV_USE_SIGNALFD
2773 if (sigfd == -2)
1843 { 2774 {
1844#ifndef _WIN32 2775 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1845 sigset_t full, prev; 2776 if (sigfd < 0 && errno == EINVAL)
1846 sigfillset (&full); 2777 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1847 sigprocmask (SIG_SETMASK, &full, &prev);
1848#endif
1849 2778
1850 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2779 if (sigfd >= 0)
2780 {
2781 fd_intern (sigfd); /* doing it twice will not hurt */
1851 2782
1852#ifndef _WIN32 2783 sigemptyset (&sigfd_set);
1853 sigprocmask (SIG_SETMASK, &prev, 0); 2784
1854#endif 2785 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2786 ev_set_priority (&sigfd_w, EV_MAXPRI);
2787 ev_io_start (EV_A_ &sigfd_w);
2788 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2789 }
1855 } 2790 }
2791
2792 if (sigfd >= 0)
2793 {
2794 /* TODO: check .head */
2795 sigaddset (&sigfd_set, w->signum);
2796 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2797
2798 signalfd (sigfd, &sigfd_set, 0);
2799 }
2800#endif
1856 2801
1857 ev_start (EV_A_ (W)w, 1); 2802 ev_start (EV_A_ (W)w, 1);
1858 wlist_add (&signals [w->signum - 1].head, (WL)w); 2803 wlist_add (&signals [w->signum - 1].head, (WL)w);
1859 2804
1860 if (!((WL)w)->next) 2805 if (!((WL)w)->next)
2806# if EV_USE_SIGNALFD
2807 if (sigfd < 0) /*TODO*/
2808# endif
1861 { 2809 {
1862#if _WIN32 2810# ifdef _WIN32
2811 evpipe_init (EV_A);
2812
1863 signal (w->signum, sighandler); 2813 signal (w->signum, ev_sighandler);
1864#else 2814# else
1865 struct sigaction sa; 2815 struct sigaction sa;
2816
2817 evpipe_init (EV_A);
2818
1866 sa.sa_handler = sighandler; 2819 sa.sa_handler = ev_sighandler;
1867 sigfillset (&sa.sa_mask); 2820 sigfillset (&sa.sa_mask);
1868 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1869 sigaction (w->signum, &sa, 0); 2822 sigaction (w->signum, &sa, 0);
2823
2824 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1870#endif 2827#endif
1871 } 2828 }
2829
2830 EV_FREQUENT_CHECK;
1872} 2831}
1873 2832
1874void noinline 2833void noinline
1875ev_signal_stop (EV_P_ ev_signal *w) 2834ev_signal_stop (EV_P_ ev_signal *w)
1876{ 2835{
1877 clear_pending (EV_A_ (W)w); 2836 clear_pending (EV_A_ (W)w);
1878 if (expect_false (!ev_is_active (w))) 2837 if (expect_false (!ev_is_active (w)))
1879 return; 2838 return;
1880 2839
2840 EV_FREQUENT_CHECK;
2841
1881 wlist_del (&signals [w->signum - 1].head, (WL)w); 2842 wlist_del (&signals [w->signum - 1].head, (WL)w);
1882 ev_stop (EV_A_ (W)w); 2843 ev_stop (EV_A_ (W)w);
1883 2844
1884 if (!signals [w->signum - 1].head) 2845 if (!signals [w->signum - 1].head)
2846 {
2847#if EV_MULTIPLICITY
2848 signals [w->signum - 1].loop = 0; /* unattach from signal */
2849#endif
2850#if EV_USE_SIGNALFD
2851 if (sigfd >= 0)
2852 {
2853 sigset_t ss;
2854
2855 sigemptyset (&ss);
2856 sigaddset (&ss, w->signum);
2857 sigdelset (&sigfd_set, w->signum);
2858
2859 signalfd (sigfd, &sigfd_set, 0);
2860 sigprocmask (SIG_UNBLOCK, &ss, 0);
2861 }
2862 else
2863#endif
1885 signal (w->signum, SIG_DFL); 2864 signal (w->signum, SIG_DFL);
2865 }
2866
2867 EV_FREQUENT_CHECK;
1886} 2868}
2869
2870#endif
2871
2872#if EV_CHILD_ENABLE
1887 2873
1888void 2874void
1889ev_child_start (EV_P_ ev_child *w) 2875ev_child_start (EV_P_ ev_child *w)
1890{ 2876{
1891#if EV_MULTIPLICITY 2877#if EV_MULTIPLICITY
1892 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1893#endif 2879#endif
1894 if (expect_false (ev_is_active (w))) 2880 if (expect_false (ev_is_active (w)))
1895 return; 2881 return;
1896 2882
2883 EV_FREQUENT_CHECK;
2884
1897 ev_start (EV_A_ (W)w, 1); 2885 ev_start (EV_A_ (W)w, 1);
1898 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2886 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2887
2888 EV_FREQUENT_CHECK;
1899} 2889}
1900 2890
1901void 2891void
1902ev_child_stop (EV_P_ ev_child *w) 2892ev_child_stop (EV_P_ ev_child *w)
1903{ 2893{
1904 clear_pending (EV_A_ (W)w); 2894 clear_pending (EV_A_ (W)w);
1905 if (expect_false (!ev_is_active (w))) 2895 if (expect_false (!ev_is_active (w)))
1906 return; 2896 return;
1907 2897
2898 EV_FREQUENT_CHECK;
2899
1908 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1909 ev_stop (EV_A_ (W)w); 2901 ev_stop (EV_A_ (W)w);
2902
2903 EV_FREQUENT_CHECK;
1910} 2904}
2905
2906#endif
1911 2907
1912#if EV_STAT_ENABLE 2908#if EV_STAT_ENABLE
1913 2909
1914# ifdef _WIN32 2910# ifdef _WIN32
1915# undef lstat 2911# undef lstat
1916# define lstat(a,b) _stati64 (a,b) 2912# define lstat(a,b) _stati64 (a,b)
1917# endif 2913# endif
1918 2914
1919#define DEF_STAT_INTERVAL 5.0074891 2915#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1920#define MIN_STAT_INTERVAL 0.1074891 2917#define MIN_STAT_INTERVAL 0.1074891
1921 2918
1922static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1923 2920
1924#if EV_USE_INOTIFY 2921#if EV_USE_INOTIFY
1925# define EV_INOTIFY_BUFSIZE 8192 2922
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1926 2925
1927static void noinline 2926static void noinline
1928infy_add (EV_P_ ev_stat *w) 2927infy_add (EV_P_ ev_stat *w)
1929{ 2928{
1930 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); 2929 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);
1931 2930
1932 if (w->wd < 0) 2931 if (w->wd >= 0)
2932 {
2933 struct statfs sfs;
2934
2935 /* now local changes will be tracked by inotify, but remote changes won't */
2936 /* unless the filesystem is known to be local, we therefore still poll */
2937 /* also do poll on <2.6.25, but with normal frequency */
2938
2939 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */
2944 || sfs.f_type == 0x3153464a /* jfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */
2947 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1933 { 2951 }
1934 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2952 else
2953 {
2954 /* can't use inotify, continue to stat */
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1935 2956
1936 /* monitor some parent directory for speedup hints */ 2957 /* if path is not there, monitor some parent directory for speedup hints */
2958 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2959 /* but an efficiency issue only */
1937 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2960 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1938 { 2961 {
1939 char path [4096]; 2962 char path [4096];
1940 strcpy (path, w->path); 2963 strcpy (path, w->path);
1941 2964
… …
1944 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2967 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1945 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2968 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1946 2969
1947 char *pend = strrchr (path, '/'); 2970 char *pend = strrchr (path, '/');
1948 2971
1949 if (!pend) 2972 if (!pend || pend == path)
1950 break; /* whoops, no '/', complain to your admin */ 2973 break;
1951 2974
1952 *pend = 0; 2975 *pend = 0;
1953 w->wd = inotify_add_watch (fs_fd, path, mask); 2976 w->wd = inotify_add_watch (fs_fd, path, mask);
1954 } 2977 }
1955 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1956 } 2979 }
1957 } 2980 }
1958 else
1959 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1960 2981
1961 if (w->wd >= 0) 2982 if (w->wd >= 0)
1962 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2983 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2984
2985 /* now re-arm timer, if required */
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1963} 2989}
1964 2990
1965static void noinline 2991static void noinline
1966infy_del (EV_P_ ev_stat *w) 2992infy_del (EV_P_ ev_stat *w)
1967{ 2993{
… …
1970 2996
1971 if (wd < 0) 2997 if (wd < 0)
1972 return; 2998 return;
1973 2999
1974 w->wd = -2; 3000 w->wd = -2;
1975 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3001 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1976 wlist_del (&fs_hash [slot].head, (WL)w); 3002 wlist_del (&fs_hash [slot].head, (WL)w);
1977 3003
1978 /* remove this watcher, if others are watching it, they will rearm */ 3004 /* remove this watcher, if others are watching it, they will rearm */
1979 inotify_rm_watch (fs_fd, wd); 3005 inotify_rm_watch (fs_fd, wd);
1980} 3006}
1981 3007
1982static void noinline 3008static void noinline
1983infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1984{ 3010{
1985 if (slot < 0) 3011 if (slot < 0)
1986 /* overflow, need to check for all hahs slots */ 3012 /* overflow, need to check for all hash slots */
1987 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1988 infy_wd (EV_A_ slot, wd, ev); 3014 infy_wd (EV_A_ slot, wd, ev);
1989 else 3015 else
1990 { 3016 {
1991 WL w_; 3017 WL w_;
1992 3018
1993 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3019 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1994 { 3020 {
1995 ev_stat *w = (ev_stat *)w_; 3021 ev_stat *w = (ev_stat *)w_;
1996 w_ = w_->next; /* lets us remove this watcher and all before it */ 3022 w_ = w_->next; /* lets us remove this watcher and all before it */
1997 3023
1998 if (w->wd == wd || wd == -1) 3024 if (w->wd == wd || wd == -1)
1999 { 3025 {
2000 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3026 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2001 { 3027 {
3028 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2002 w->wd = -1; 3029 w->wd = -1;
2003 infy_add (EV_A_ w); /* re-add, no matter what */ 3030 infy_add (EV_A_ w); /* re-add, no matter what */
2004 } 3031 }
2005 3032
2006 stat_timer_cb (EV_A_ &w->timer, 0); 3033 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2011 3038
2012static void 3039static void
2013infy_cb (EV_P_ ev_io *w, int revents) 3040infy_cb (EV_P_ ev_io *w, int revents)
2014{ 3041{
2015 char buf [EV_INOTIFY_BUFSIZE]; 3042 char buf [EV_INOTIFY_BUFSIZE];
2016 struct inotify_event *ev = (struct inotify_event *)buf;
2017 int ofs; 3043 int ofs;
2018 int len = read (fs_fd, buf, sizeof (buf)); 3044 int len = read (fs_fd, buf, sizeof (buf));
2019 3045
2020 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3046 for (ofs = 0; ofs < len; )
3047 {
3048 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2021 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3049 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len;
3051 }
2022} 3052}
2023 3053
2024void inline_size 3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void
3087ev_check_2625 (EV_P)
3088{
3089 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */
3092 if (ev_linux_version () < 0x020619)
3093 return;
3094
3095 fs_2625 = 1;
3096}
3097
3098inline_size int
3099infy_newfd (void)
3100{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0)
3104 return fd;
3105#endif
3106 return inotify_init ();
3107}
3108
3109inline_size void
2025infy_init (EV_P) 3110infy_init (EV_P)
2026{ 3111{
2027 if (fs_fd != -2) 3112 if (fs_fd != -2)
2028 return; 3113 return;
2029 3114
3115 fs_fd = -1;
3116
3117 ev_check_2625 (EV_A);
3118
2030 fs_fd = inotify_init (); 3119 fs_fd = infy_newfd ();
2031 3120
2032 if (fs_fd >= 0) 3121 if (fs_fd >= 0)
2033 { 3122 {
3123 fd_intern (fs_fd);
2034 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3124 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2035 ev_set_priority (&fs_w, EV_MAXPRI); 3125 ev_set_priority (&fs_w, EV_MAXPRI);
2036 ev_io_start (EV_A_ &fs_w); 3126 ev_io_start (EV_A_ &fs_w);
3127 ev_unref (EV_A);
2037 } 3128 }
2038} 3129}
2039 3130
2040void inline_size 3131inline_size void
2041infy_fork (EV_P) 3132infy_fork (EV_P)
2042{ 3133{
2043 int slot; 3134 int slot;
2044 3135
2045 if (fs_fd < 0) 3136 if (fs_fd < 0)
2046 return; 3137 return;
2047 3138
3139 ev_ref (EV_A);
3140 ev_io_stop (EV_A_ &fs_w);
2048 close (fs_fd); 3141 close (fs_fd);
2049 fs_fd = inotify_init (); 3142 fs_fd = infy_newfd ();
2050 3143
3144 if (fs_fd >= 0)
3145 {
3146 fd_intern (fs_fd);
3147 ev_io_set (&fs_w, fs_fd, EV_READ);
3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
3150 }
3151
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3152 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2052 { 3153 {
2053 WL w_ = fs_hash [slot].head; 3154 WL w_ = fs_hash [slot].head;
2054 fs_hash [slot].head = 0; 3155 fs_hash [slot].head = 0;
2055 3156
2056 while (w_) 3157 while (w_)
… …
2061 w->wd = -1; 3162 w->wd = -1;
2062 3163
2063 if (fs_fd >= 0) 3164 if (fs_fd >= 0)
2064 infy_add (EV_A_ w); /* re-add, no matter what */ 3165 infy_add (EV_A_ w); /* re-add, no matter what */
2065 else 3166 else
3167 {
3168 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3169 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2066 ev_timer_start (EV_A_ &w->timer); 3170 ev_timer_again (EV_A_ &w->timer);
3171 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3172 }
2067 } 3173 }
2068
2069 } 3174 }
2070} 3175}
2071 3176
3177#endif
3178
3179#ifdef _WIN32
3180# define EV_LSTAT(p,b) _stati64 (p, b)
3181#else
3182# define EV_LSTAT(p,b) lstat (p, b)
2072#endif 3183#endif
2073 3184
2074void 3185void
2075ev_stat_stat (EV_P_ ev_stat *w) 3186ev_stat_stat (EV_P_ ev_stat *w)
2076{ 3187{
… …
2083static void noinline 3194static void noinline
2084stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3195stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2085{ 3196{
2086 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2087 3198
2088 /* we copy this here each the time so that */ 3199 ev_statdata prev = w->attr;
2089 /* prev has the old value when the callback gets invoked */
2090 w->prev = w->attr;
2091 ev_stat_stat (EV_A_ w); 3200 ev_stat_stat (EV_A_ w);
2092 3201
2093 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3202 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2094 if ( 3203 if (
2095 w->prev.st_dev != w->attr.st_dev 3204 prev.st_dev != w->attr.st_dev
2096 || w->prev.st_ino != w->attr.st_ino 3205 || prev.st_ino != w->attr.st_ino
2097 || w->prev.st_mode != w->attr.st_mode 3206 || prev.st_mode != w->attr.st_mode
2098 || w->prev.st_nlink != w->attr.st_nlink 3207 || prev.st_nlink != w->attr.st_nlink
2099 || w->prev.st_uid != w->attr.st_uid 3208 || prev.st_uid != w->attr.st_uid
2100 || w->prev.st_gid != w->attr.st_gid 3209 || prev.st_gid != w->attr.st_gid
2101 || w->prev.st_rdev != w->attr.st_rdev 3210 || prev.st_rdev != w->attr.st_rdev
2102 || w->prev.st_size != w->attr.st_size 3211 || prev.st_size != w->attr.st_size
2103 || w->prev.st_atime != w->attr.st_atime 3212 || prev.st_atime != w->attr.st_atime
2104 || w->prev.st_mtime != w->attr.st_mtime 3213 || prev.st_mtime != w->attr.st_mtime
2105 || w->prev.st_ctime != w->attr.st_ctime 3214 || prev.st_ctime != w->attr.st_ctime
2106 ) { 3215 ) {
3216 /* we only update w->prev on actual differences */
3217 /* in case we test more often than invoke the callback, */
3218 /* to ensure that prev is always different to attr */
3219 w->prev = prev;
3220
2107 #if EV_USE_INOTIFY 3221 #if EV_USE_INOTIFY
3222 if (fs_fd >= 0)
3223 {
2108 infy_del (EV_A_ w); 3224 infy_del (EV_A_ w);
2109 infy_add (EV_A_ w); 3225 infy_add (EV_A_ w);
2110 ev_stat_stat (EV_A_ w); /* avoid race... */ 3226 ev_stat_stat (EV_A_ w); /* avoid race... */
3227 }
2111 #endif 3228 #endif
2112 3229
2113 ev_feed_event (EV_A_ w, EV_STAT); 3230 ev_feed_event (EV_A_ w, EV_STAT);
2114 } 3231 }
2115} 3232}
… …
2118ev_stat_start (EV_P_ ev_stat *w) 3235ev_stat_start (EV_P_ ev_stat *w)
2119{ 3236{
2120 if (expect_false (ev_is_active (w))) 3237 if (expect_false (ev_is_active (w)))
2121 return; 3238 return;
2122 3239
2123 /* since we use memcmp, we need to clear any padding data etc. */
2124 memset (&w->prev, 0, sizeof (ev_statdata));
2125 memset (&w->attr, 0, sizeof (ev_statdata));
2126
2127 ev_stat_stat (EV_A_ w); 3240 ev_stat_stat (EV_A_ w);
2128 3241
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2129 if (w->interval < MIN_STAT_INTERVAL) 3243 w->interval = MIN_STAT_INTERVAL;
2130 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2131 3244
2132 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3245 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2133 ev_set_priority (&w->timer, ev_priority (w)); 3246 ev_set_priority (&w->timer, ev_priority (w));
2134 3247
2135#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
2136 infy_init (EV_A); 3249 infy_init (EV_A);
2137 3250
2138 if (fs_fd >= 0) 3251 if (fs_fd >= 0)
2139 infy_add (EV_A_ w); 3252 infy_add (EV_A_ w);
2140 else 3253 else
2141#endif 3254#endif
3255 {
2142 ev_timer_start (EV_A_ &w->timer); 3256 ev_timer_again (EV_A_ &w->timer);
3257 ev_unref (EV_A);
3258 }
2143 3259
2144 ev_start (EV_A_ (W)w, 1); 3260 ev_start (EV_A_ (W)w, 1);
3261
3262 EV_FREQUENT_CHECK;
2145} 3263}
2146 3264
2147void 3265void
2148ev_stat_stop (EV_P_ ev_stat *w) 3266ev_stat_stop (EV_P_ ev_stat *w)
2149{ 3267{
2150 clear_pending (EV_A_ (W)w); 3268 clear_pending (EV_A_ (W)w);
2151 if (expect_false (!ev_is_active (w))) 3269 if (expect_false (!ev_is_active (w)))
2152 return; 3270 return;
2153 3271
3272 EV_FREQUENT_CHECK;
3273
2154#if EV_USE_INOTIFY 3274#if EV_USE_INOTIFY
2155 infy_del (EV_A_ w); 3275 infy_del (EV_A_ w);
2156#endif 3276#endif
3277
3278 if (ev_is_active (&w->timer))
3279 {
3280 ev_ref (EV_A);
2157 ev_timer_stop (EV_A_ &w->timer); 3281 ev_timer_stop (EV_A_ &w->timer);
3282 }
2158 3283
2159 ev_stop (EV_A_ (W)w); 3284 ev_stop (EV_A_ (W)w);
3285
3286 EV_FREQUENT_CHECK;
2160} 3287}
2161#endif 3288#endif
2162 3289
2163#if EV_IDLE_ENABLE 3290#if EV_IDLE_ENABLE
2164void 3291void
… …
2166{ 3293{
2167 if (expect_false (ev_is_active (w))) 3294 if (expect_false (ev_is_active (w)))
2168 return; 3295 return;
2169 3296
2170 pri_adjust (EV_A_ (W)w); 3297 pri_adjust (EV_A_ (W)w);
3298
3299 EV_FREQUENT_CHECK;
2171 3300
2172 { 3301 {
2173 int active = ++idlecnt [ABSPRI (w)]; 3302 int active = ++idlecnt [ABSPRI (w)];
2174 3303
2175 ++idleall; 3304 ++idleall;
2176 ev_start (EV_A_ (W)w, active); 3305 ev_start (EV_A_ (W)w, active);
2177 3306
2178 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3307 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2179 idles [ABSPRI (w)][active - 1] = w; 3308 idles [ABSPRI (w)][active - 1] = w;
2180 } 3309 }
3310
3311 EV_FREQUENT_CHECK;
2181} 3312}
2182 3313
2183void 3314void
2184ev_idle_stop (EV_P_ ev_idle *w) 3315ev_idle_stop (EV_P_ ev_idle *w)
2185{ 3316{
2186 clear_pending (EV_A_ (W)w); 3317 clear_pending (EV_A_ (W)w);
2187 if (expect_false (!ev_is_active (w))) 3318 if (expect_false (!ev_is_active (w)))
2188 return; 3319 return;
2189 3320
3321 EV_FREQUENT_CHECK;
3322
2190 { 3323 {
2191 int active = ((W)w)->active; 3324 int active = ev_active (w);
2192 3325
2193 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3326 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2194 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3327 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2195 3328
2196 ev_stop (EV_A_ (W)w); 3329 ev_stop (EV_A_ (W)w);
2197 --idleall; 3330 --idleall;
2198 } 3331 }
2199}
2200#endif
2201 3332
3333 EV_FREQUENT_CHECK;
3334}
3335#endif
3336
3337#if EV_PREPARE_ENABLE
2202void 3338void
2203ev_prepare_start (EV_P_ ev_prepare *w) 3339ev_prepare_start (EV_P_ ev_prepare *w)
2204{ 3340{
2205 if (expect_false (ev_is_active (w))) 3341 if (expect_false (ev_is_active (w)))
2206 return; 3342 return;
3343
3344 EV_FREQUENT_CHECK;
2207 3345
2208 ev_start (EV_A_ (W)w, ++preparecnt); 3346 ev_start (EV_A_ (W)w, ++preparecnt);
2209 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3347 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2210 prepares [preparecnt - 1] = w; 3348 prepares [preparecnt - 1] = w;
3349
3350 EV_FREQUENT_CHECK;
2211} 3351}
2212 3352
2213void 3353void
2214ev_prepare_stop (EV_P_ ev_prepare *w) 3354ev_prepare_stop (EV_P_ ev_prepare *w)
2215{ 3355{
2216 clear_pending (EV_A_ (W)w); 3356 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w))) 3357 if (expect_false (!ev_is_active (w)))
2218 return; 3358 return;
2219 3359
3360 EV_FREQUENT_CHECK;
3361
2220 { 3362 {
2221 int active = ((W)w)->active; 3363 int active = ev_active (w);
3364
2222 prepares [active - 1] = prepares [--preparecnt]; 3365 prepares [active - 1] = prepares [--preparecnt];
2223 ((W)prepares [active - 1])->active = active; 3366 ev_active (prepares [active - 1]) = active;
2224 } 3367 }
2225 3368
2226 ev_stop (EV_A_ (W)w); 3369 ev_stop (EV_A_ (W)w);
2227}
2228 3370
3371 EV_FREQUENT_CHECK;
3372}
3373#endif
3374
3375#if EV_CHECK_ENABLE
2229void 3376void
2230ev_check_start (EV_P_ ev_check *w) 3377ev_check_start (EV_P_ ev_check *w)
2231{ 3378{
2232 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2233 return; 3380 return;
3381
3382 EV_FREQUENT_CHECK;
2234 3383
2235 ev_start (EV_A_ (W)w, ++checkcnt); 3384 ev_start (EV_A_ (W)w, ++checkcnt);
2236 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2237 checks [checkcnt - 1] = w; 3386 checks [checkcnt - 1] = w;
3387
3388 EV_FREQUENT_CHECK;
2238} 3389}
2239 3390
2240void 3391void
2241ev_check_stop (EV_P_ ev_check *w) 3392ev_check_stop (EV_P_ ev_check *w)
2242{ 3393{
2243 clear_pending (EV_A_ (W)w); 3394 clear_pending (EV_A_ (W)w);
2244 if (expect_false (!ev_is_active (w))) 3395 if (expect_false (!ev_is_active (w)))
2245 return; 3396 return;
2246 3397
3398 EV_FREQUENT_CHECK;
3399
2247 { 3400 {
2248 int active = ((W)w)->active; 3401 int active = ev_active (w);
3402
2249 checks [active - 1] = checks [--checkcnt]; 3403 checks [active - 1] = checks [--checkcnt];
2250 ((W)checks [active - 1])->active = active; 3404 ev_active (checks [active - 1]) = active;
2251 } 3405 }
2252 3406
2253 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
3408
3409 EV_FREQUENT_CHECK;
2254} 3410}
3411#endif
2255 3412
2256#if EV_EMBED_ENABLE 3413#if EV_EMBED_ENABLE
2257void noinline 3414void noinline
2258ev_embed_sweep (EV_P_ ev_embed *w) 3415ev_embed_sweep (EV_P_ ev_embed *w)
2259{ 3416{
… …
2275embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276{ 3433{
2277 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3434 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278 3435
2279 { 3436 {
2280 struct ev_loop *loop = w->other; 3437 EV_P = w->other;
2281 3438
2282 while (fdchangecnt) 3439 while (fdchangecnt)
2283 { 3440 {
2284 fd_reify (EV_A); 3441 fd_reify (EV_A);
2285 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3442 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2286 } 3443 }
2287 } 3444 }
2288} 3445}
2289 3446
3447static void
3448embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3449{
3450 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3451
3452 ev_embed_stop (EV_A_ w);
3453
3454 {
3455 EV_P = w->other;
3456
3457 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3459 }
3460
3461 ev_embed_start (EV_A_ w);
3462}
3463
2290#if 0 3464#if 0
2291static void 3465static void
2292embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3466embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2293{ 3467{
2294 ev_idle_stop (EV_A_ idle); 3468 ev_idle_stop (EV_A_ idle);
… …
2300{ 3474{
2301 if (expect_false (ev_is_active (w))) 3475 if (expect_false (ev_is_active (w)))
2302 return; 3476 return;
2303 3477
2304 { 3478 {
2305 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2306 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3480 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2307 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3481 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2308 } 3482 }
3483
3484 EV_FREQUENT_CHECK;
2309 3485
2310 ev_set_priority (&w->io, ev_priority (w)); 3486 ev_set_priority (&w->io, ev_priority (w));
2311 ev_io_start (EV_A_ &w->io); 3487 ev_io_start (EV_A_ &w->io);
2312 3488
2313 ev_prepare_init (&w->prepare, embed_prepare_cb); 3489 ev_prepare_init (&w->prepare, embed_prepare_cb);
2314 ev_set_priority (&w->prepare, EV_MINPRI); 3490 ev_set_priority (&w->prepare, EV_MINPRI);
2315 ev_prepare_start (EV_A_ &w->prepare); 3491 ev_prepare_start (EV_A_ &w->prepare);
2316 3492
3493 ev_fork_init (&w->fork, embed_fork_cb);
3494 ev_fork_start (EV_A_ &w->fork);
3495
2317 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3496 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2318 3497
2319 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
3499
3500 EV_FREQUENT_CHECK;
2320} 3501}
2321 3502
2322void 3503void
2323ev_embed_stop (EV_P_ ev_embed *w) 3504ev_embed_stop (EV_P_ ev_embed *w)
2324{ 3505{
2325 clear_pending (EV_A_ (W)w); 3506 clear_pending (EV_A_ (W)w);
2326 if (expect_false (!ev_is_active (w))) 3507 if (expect_false (!ev_is_active (w)))
2327 return; 3508 return;
2328 3509
3510 EV_FREQUENT_CHECK;
3511
2329 ev_io_stop (EV_A_ &w->io); 3512 ev_io_stop (EV_A_ &w->io);
2330 ev_prepare_stop (EV_A_ &w->prepare); 3513 ev_prepare_stop (EV_A_ &w->prepare);
3514 ev_fork_stop (EV_A_ &w->fork);
2331 3515
2332 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
3517
3518 EV_FREQUENT_CHECK;
2333} 3519}
2334#endif 3520#endif
2335 3521
2336#if EV_FORK_ENABLE 3522#if EV_FORK_ENABLE
2337void 3523void
2338ev_fork_start (EV_P_ ev_fork *w) 3524ev_fork_start (EV_P_ ev_fork *w)
2339{ 3525{
2340 if (expect_false (ev_is_active (w))) 3526 if (expect_false (ev_is_active (w)))
2341 return; 3527 return;
3528
3529 EV_FREQUENT_CHECK;
2342 3530
2343 ev_start (EV_A_ (W)w, ++forkcnt); 3531 ev_start (EV_A_ (W)w, ++forkcnt);
2344 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3532 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2345 forks [forkcnt - 1] = w; 3533 forks [forkcnt - 1] = w;
3534
3535 EV_FREQUENT_CHECK;
2346} 3536}
2347 3537
2348void 3538void
2349ev_fork_stop (EV_P_ ev_fork *w) 3539ev_fork_stop (EV_P_ ev_fork *w)
2350{ 3540{
2351 clear_pending (EV_A_ (W)w); 3541 clear_pending (EV_A_ (W)w);
2352 if (expect_false (!ev_is_active (w))) 3542 if (expect_false (!ev_is_active (w)))
2353 return; 3543 return;
2354 3544
3545 EV_FREQUENT_CHECK;
3546
2355 { 3547 {
2356 int active = ((W)w)->active; 3548 int active = ev_active (w);
3549
2357 forks [active - 1] = forks [--forkcnt]; 3550 forks [active - 1] = forks [--forkcnt];
2358 ((W)forks [active - 1])->active = active; 3551 ev_active (forks [active - 1]) = active;
2359 } 3552 }
2360 3553
2361 ev_stop (EV_A_ (W)w); 3554 ev_stop (EV_A_ (W)w);
3555
3556 EV_FREQUENT_CHECK;
3557}
3558#endif
3559
3560#if EV_ASYNC_ENABLE
3561void
3562ev_async_start (EV_P_ ev_async *w)
3563{
3564 if (expect_false (ev_is_active (w)))
3565 return;
3566
3567 evpipe_init (EV_A);
3568
3569 EV_FREQUENT_CHECK;
3570
3571 ev_start (EV_A_ (W)w, ++asynccnt);
3572 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3573 asyncs [asynccnt - 1] = w;
3574
3575 EV_FREQUENT_CHECK;
3576}
3577
3578void
3579ev_async_stop (EV_P_ ev_async *w)
3580{
3581 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w)))
3583 return;
3584
3585 EV_FREQUENT_CHECK;
3586
3587 {
3588 int active = ev_active (w);
3589
3590 asyncs [active - 1] = asyncs [--asynccnt];
3591 ev_active (asyncs [active - 1]) = active;
3592 }
3593
3594 ev_stop (EV_A_ (W)w);
3595
3596 EV_FREQUENT_CHECK;
3597}
3598
3599void
3600ev_async_send (EV_P_ ev_async *w)
3601{
3602 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending);
2362} 3604}
2363#endif 3605#endif
2364 3606
2365/*****************************************************************************/ 3607/*****************************************************************************/
2366 3608
… …
2376once_cb (EV_P_ struct ev_once *once, int revents) 3618once_cb (EV_P_ struct ev_once *once, int revents)
2377{ 3619{
2378 void (*cb)(int revents, void *arg) = once->cb; 3620 void (*cb)(int revents, void *arg) = once->cb;
2379 void *arg = once->arg; 3621 void *arg = once->arg;
2380 3622
2381 ev_io_stop (EV_A_ &once->io); 3623 ev_io_stop (EV_A_ &once->io);
2382 ev_timer_stop (EV_A_ &once->to); 3624 ev_timer_stop (EV_A_ &once->to);
2383 ev_free (once); 3625 ev_free (once);
2384 3626
2385 cb (revents, arg); 3627 cb (revents, arg);
2386} 3628}
2387 3629
2388static void 3630static void
2389once_cb_io (EV_P_ ev_io *w, int revents) 3631once_cb_io (EV_P_ ev_io *w, int revents)
2390{ 3632{
2391 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3633 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3634
3635 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2392} 3636}
2393 3637
2394static void 3638static void
2395once_cb_to (EV_P_ ev_timer *w, int revents) 3639once_cb_to (EV_P_ ev_timer *w, int revents)
2396{ 3640{
2397 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3641 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3642
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2398} 3644}
2399 3645
2400void 3646void
2401ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2402{ 3648{
2403 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2404 3650
2405 if (expect_false (!once)) 3651 if (expect_false (!once))
2406 { 3652 {
2407 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2408 return; 3654 return;
2409 } 3655 }
2410 3656
2411 once->cb = cb; 3657 once->cb = cb;
2412 once->arg = arg; 3658 once->arg = arg;
… …
2424 ev_timer_set (&once->to, timeout, 0.); 3670 ev_timer_set (&once->to, timeout, 0.);
2425 ev_timer_start (EV_A_ &once->to); 3671 ev_timer_start (EV_A_ &once->to);
2426 } 3672 }
2427} 3673}
2428 3674
3675/*****************************************************************************/
3676
3677#if EV_WALK_ENABLE
3678void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680{
3681 int i, j;
3682 ev_watcher_list *wl, *wn;
3683
3684 if (types & (EV_IO | EV_EMBED))
3685 for (i = 0; i < anfdmax; ++i)
3686 for (wl = anfds [i].head; wl; )
3687 {
3688 wn = wl->next;
3689
3690#if EV_EMBED_ENABLE
3691 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3692 {
3693 if (types & EV_EMBED)
3694 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3695 }
3696 else
3697#endif
3698#if EV_USE_INOTIFY
3699 if (ev_cb ((ev_io *)wl) == infy_cb)
3700 ;
3701 else
3702#endif
3703 if ((ev_io *)wl != &pipe_w)
3704 if (types & EV_IO)
3705 cb (EV_A_ EV_IO, wl);
3706
3707 wl = wn;
3708 }
3709
3710 if (types & (EV_TIMER | EV_STAT))
3711 for (i = timercnt + HEAP0; i-- > HEAP0; )
3712#if EV_STAT_ENABLE
3713 /*TODO: timer is not always active*/
3714 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3715 {
3716 if (types & EV_STAT)
3717 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3718 }
3719 else
3720#endif
3721 if (types & EV_TIMER)
3722 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3723
3724#if EV_PERIODIC_ENABLE
3725 if (types & EV_PERIODIC)
3726 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif
3729
3730#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; )
3733 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif
3736
3737#if EV_FORK_ENABLE
3738 if (types & EV_FORK)
3739 for (i = forkcnt; i--; )
3740 if (ev_cb (forks [i]) != embed_fork_cb)
3741 cb (EV_A_ EV_FORK, forks [i]);
3742#endif
3743
3744#if EV_ASYNC_ENABLE
3745 if (types & EV_ASYNC)
3746 for (i = asynccnt; i--; )
3747 cb (EV_A_ EV_ASYNC, asyncs [i]);
3748#endif
3749
3750#if EV_PREPARE_ENABLE
3751 if (types & EV_PREPARE)
3752 for (i = preparecnt; i--; )
3753# if EV_EMBED_ENABLE
3754 if (ev_cb (prepares [i]) != embed_prepare_cb)
3755# endif
3756 cb (EV_A_ EV_PREPARE, prepares [i]);
3757#endif
3758
3759#if EV_CHECK_ENABLE
3760 if (types & EV_CHECK)
3761 for (i = checkcnt; i--; )
3762 cb (EV_A_ EV_CHECK, checks [i]);
3763#endif
3764
3765#if EV_SIGNAL_ENABLE
3766 if (types & EV_SIGNAL)
3767 for (i = 0; i < EV_NSIG - 1; ++i)
3768 for (wl = signals [i].head; wl; )
3769 {
3770 wn = wl->next;
3771 cb (EV_A_ EV_SIGNAL, wl);
3772 wl = wn;
3773 }
3774#endif
3775
3776#if EV_CHILD_ENABLE
3777 if (types & EV_CHILD)
3778 for (i = (EV_PID_HASHSIZE); i--; )
3779 for (wl = childs [i]; wl; )
3780 {
3781 wn = wl->next;
3782 cb (EV_A_ EV_CHILD, wl);
3783 wl = wn;
3784 }
3785#endif
3786/* EV_STAT 0x00001000 /* stat data changed */
3787/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3788}
3789#endif
3790
2429#if EV_MULTIPLICITY 3791#if EV_MULTIPLICITY
2430 #include "ev_wrap.h" 3792 #include "ev_wrap.h"
2431#endif 3793#endif
2432 3794
2433#ifdef __cplusplus 3795#ifdef __cplusplus

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