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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 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 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 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */
31#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
32# include "config.h" 49# include "config.h"
50# endif
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
66# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC
68# define EV_USE_MONOTONIC 1
69# endif
70# ifndef EV_USE_REALTIME
71# define EV_USE_REALTIME 0
72# endif
73# else
74# ifndef EV_USE_MONOTONIC
75# define EV_USE_MONOTONIC 0
76# endif
77# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0
79# endif
80# endif
81
82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1
85# else
86# define EV_USE_NANOSLEEP 0
87# endif
88# endif
89
90# ifndef EV_USE_SELECT
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else
102# define EV_USE_POLL 0
103# endif
104# endif
105
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1
109# else
110# define EV_USE_EPOLL 0
111# endif
112# endif
113
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif
120# endif
121
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif
136# endif
137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif
153
33#endif 154#endif
34 155
35#include <math.h> 156#include <math.h>
36#include <stdlib.h> 157#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 158#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 159#include <stddef.h>
41 160
42#include <stdio.h> 161#include <stdio.h>
43 162
44#include <assert.h> 163#include <assert.h>
45#include <errno.h> 164#include <errno.h>
46#include <sys/types.h> 165#include <sys/types.h>
166#include <time.h>
167
168#include <signal.h>
169
170#ifdef EV_H
171# include EV_H
172#else
173# include "ev.h"
174#endif
175
47#ifndef WIN32 176#ifndef _WIN32
177# include <sys/time.h>
48# include <sys/wait.h> 178# include <sys/wait.h>
179# include <unistd.h>
180#else
181# include <io.h>
182# define WIN32_LEAN_AND_MEAN
183# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1
49#endif 186# endif
50#include <sys/time.h> 187#endif
51#include <time.h>
52 188
53/**/ 189/* this block tries to deduce configuration from header-defined symbols and defaults */
190
191#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1
194# else
195# define EV_USE_CLOCK_SYSCALL 0
196# endif
197#endif
54 198
55#ifndef EV_USE_MONOTONIC 199#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
56# define EV_USE_MONOTONIC 1 201# define EV_USE_MONOTONIC 1
202# else
203# define EV_USE_MONOTONIC 0
204# endif
205#endif
206
207#ifndef EV_USE_REALTIME
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif
210
211#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1
214# else
215# define EV_USE_NANOSLEEP 0
216# endif
57#endif 217#endif
58 218
59#ifndef EV_USE_SELECT 219#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 220# define EV_USE_SELECT 1
61#endif 221#endif
62 222
63#ifndef EV_USEV_POLL 223#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 224# ifdef _WIN32
225# define EV_USE_POLL 0
226# else
227# define EV_USE_POLL 1
228# endif
65#endif 229#endif
66 230
67#ifndef EV_USE_EPOLL 231#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1
234# else
68# define EV_USE_EPOLL 0 235# define EV_USE_EPOLL 0
236# endif
69#endif 237#endif
70 238
71#ifndef EV_USE_KQUEUE 239#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 240# define EV_USE_KQUEUE 0
73#endif 241#endif
74 242
75#ifndef EV_USE_REALTIME 243#ifndef EV_USE_PORT
244# define EV_USE_PORT 0
245#endif
246
247#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
76# define EV_USE_REALTIME 1 249# define EV_USE_INOTIFY 1
250# else
251# define EV_USE_INOTIFY 0
77#endif 252# endif
253#endif
78 254
79/**/ 255#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif
262
263#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif
270
271#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1
274# else
275# define EV_USE_EVENTFD 0
276# endif
277#endif
278
279#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
281# define EV_USE_SIGNALFD 1
282# else
283# define EV_USE_SIGNALFD 0
284# endif
285#endif
286
287#if 0 /* debugging */
288# define EV_VERIFY 3
289# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1
291#endif
292
293#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL
295#endif
296
297#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL
299#endif
300
301#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL
303#endif
304
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h>
309# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1
313# else
314# undef EV_USE_CLOCK_SYSCALL
315# define EV_USE_CLOCK_SYSCALL 0
316# endif
317#endif
318
319/* this block fixes any misconfiguration where we know we run into trouble otherwise */
80 320
81#ifndef CLOCK_MONOTONIC 321#ifndef CLOCK_MONOTONIC
82# undef EV_USE_MONOTONIC 322# undef EV_USE_MONOTONIC
83# define EV_USE_MONOTONIC 0 323# define EV_USE_MONOTONIC 0
84#endif 324#endif
… …
86#ifndef CLOCK_REALTIME 326#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 327# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 328# define EV_USE_REALTIME 0
89#endif 329#endif
90 330
331#if !EV_STAT_ENABLE
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334#endif
335
336#if !EV_USE_NANOSLEEP
337# ifndef _WIN32
338# include <sys/select.h>
339# endif
340#endif
341
342#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h>
345# include <sys/inotify.h>
346/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
347# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0
350# endif
351#endif
352
353#if EV_SELECT_IS_WINSOCKET
354# include <winsock.h>
355#endif
356
357#if EV_USE_EVENTFD
358/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
359# include <stdint.h>
360# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK
362# endif
363# ifndef EFD_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC
365# endif
366# ifdef __cplusplus
367extern "C" {
368# endif
369int eventfd (unsigned int initval, int flags);
370# ifdef __cplusplus
371}
372# endif
373#endif
374
375#if EV_USE_SIGNALFD
376# include <sys/signalfd.h>
377#endif
378
91/**/ 379/**/
92 380
381#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
383#else
384# define EV_FREQUENT_CHECK do { } while (0)
385#endif
386
387/*
388 * This is used to avoid floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */
395#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
396
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 397#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 398#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97 400
98#include "ev.h"
99
100#if __GNUC__ >= 3 401#if __GNUC__ >= 4
101# define expect(expr,value) __builtin_expect ((expr),(value)) 402# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 403# define noinline __attribute__ ((noinline))
103#else 404#else
104# define expect(expr,value) (expr) 405# define expect(expr,value) (expr)
105# define inline static 406# define noinline
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
408# define inline
409# endif
106#endif 410#endif
107 411
108#define expect_false(expr) expect ((expr) != 0, 0) 412#define expect_false(expr) expect ((expr) != 0, 0)
109#define expect_true(expr) expect ((expr) != 0, 1) 413#define expect_true(expr) expect ((expr) != 0, 1)
414#define inline_size static inline
110 415
416#if EV_MINIMAL
417# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif
421
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423
424#if EV_MINPRI == EV_MAXPRI
425# define ABSPRI(w) (((W)w), 0)
426#else
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 427# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
428#endif
113 429
430#define EMPTY /* required for microsofts broken pseudo-c compiler */
431#define EMPTY2(a,b) /* used to suppress some warnings */
432
114typedef struct ev_watcher *W; 433typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 434typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 435typedef ev_watcher_time *WT;
117 436
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 437#define ev_active(w) ((W)(w))->active
119static ev_tstamp rt_now; 438#define ev_at(w) ((WT)(w))->at
120static int method;
121 439
122static int have_monotonic; /* runtime */
123
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT 440#if EV_USE_REALTIME
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo; 441/* sig_atomic_t is used to avoid per-thread variables or locking but still */
132static int vec_max; 442/* giving it a reasonably high chance of working on typical architetcures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
133#endif 444#endif
134 445
135#if EV_USEV_POLL 446#if EV_USE_MONOTONIC
136static struct pollfd *polls; 447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif 448#endif
141 449
450#ifdef _WIN32
451# include "ev_win32.c"
452#endif
453
454/*****************************************************************************/
455
456static void (*syserr_cb)(const char *msg);
457
458void
459ev_set_syserr_cb (void (*cb)(const char *msg))
460{
461 syserr_cb = cb;
462}
463
464static void noinline
465ev_syserr (const char *msg)
466{
467 if (!msg)
468 msg = "(libev) system error";
469
470 if (syserr_cb)
471 syserr_cb (msg);
472 else
473 {
474 perror (msg);
475 abort ();
476 }
477}
478
479static void *
480ev_realloc_emul (void *ptr, long size)
481{
482 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and
484 * the single unix specification, so work around them here.
485 */
486
487 if (size)
488 return realloc (ptr, size);
489
490 free (ptr);
491 return 0;
492}
493
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
495
496void
497ev_set_allocator (void *(*cb)(void *ptr, long size))
498{
499 alloc = cb;
500}
501
502inline_speed void *
503ev_realloc (void *ptr, long size)
504{
505 ptr = alloc (ptr, size);
506
507 if (!ptr && size)
508 {
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
510 abort ();
511 }
512
513 return ptr;
514}
515
516#define ev_malloc(size) ev_realloc (0, (size))
517#define ev_free(ptr) ev_realloc ((ptr), 0)
518
519/*****************************************************************************/
520
521/* set in reify when reification needed */
522#define EV_ANFD_REIFY 1
523
524/* file descriptor info structure */
525typedef struct
526{
527 WL head;
528 unsigned char events; /* the events watched for */
529 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused;
142#if EV_USE_EPOLL 532#if EV_USE_EPOLL
143static int epoll_fd = -1; 533 unsigned int egen; /* generation counter to counter epoll bugs */
144
145static struct epoll_event *events;
146static int eventmax;
147#endif 534#endif
148 535#if EV_SELECT_IS_WINSOCKET
149#if EV_USE_KQUEUE 536 SOCKET handle;
150static int kqueue_fd;
151static struct kevent *kqueue_changes;
152static int kqueue_changemax, kqueue_changecnt;
153static struct kevent *kqueue_events;
154static int kqueue_eventmax;
155#endif 537#endif
538} ANFD;
539
540/* stores the pending event set for a given watcher */
541typedef struct
542{
543 W w;
544 int events; /* the pending event set for the given watcher */
545} ANPENDING;
546
547#if EV_USE_INOTIFY
548/* hash table entry per inotify-id */
549typedef struct
550{
551 WL head;
552} ANFS;
553#endif
554
555/* Heap Entry */
556#if EV_HEAP_CACHE_AT
557 /* a heap element */
558 typedef struct {
559 ev_tstamp at;
560 WT w;
561 } ANHE;
562
563 #define ANHE_w(he) (he).w /* access watcher, read-write */
564 #define ANHE_at(he) (he).at /* access cached at, read-only */
565 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
566#else
567 /* a heap element */
568 typedef WT ANHE;
569
570 #define ANHE_w(he) (he)
571 #define ANHE_at(he) (he)->at
572 #define ANHE_at_cache(he)
573#endif
574
575#if EV_MULTIPLICITY
576
577 struct ev_loop
578 {
579 ev_tstamp ev_rt_now;
580 #define ev_rt_now ((loop)->ev_rt_now)
581 #define VAR(name,decl) decl;
582 #include "ev_vars.h"
583 #undef VAR
584 };
585 #include "ev_wrap.h"
586
587 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr;
589
590#else
591
592 ev_tstamp ev_rt_now;
593 #define VAR(name,decl) static decl;
594 #include "ev_vars.h"
595 #undef VAR
596
597 static int ev_default_loop_ptr;
598
599#endif
600
601#if EV_MINIMAL < 2
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else
606# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif
610
611#define EVUNLOOP_RECURSE 0x80
156 612
157/*****************************************************************************/ 613/*****************************************************************************/
158 614
159inline ev_tstamp 615#ifndef EV_HAVE_EV_TIME
616ev_tstamp
160ev_time (void) 617ev_time (void)
161{ 618{
162#if EV_USE_REALTIME 619#if EV_USE_REALTIME
620 if (expect_true (have_realtime))
621 {
163 struct timespec ts; 622 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 623 clock_gettime (CLOCK_REALTIME, &ts);
165 return ts.tv_sec + ts.tv_nsec * 1e-9; 624 return ts.tv_sec + ts.tv_nsec * 1e-9;
166#else 625 }
626#endif
627
167 struct timeval tv; 628 struct timeval tv;
168 gettimeofday (&tv, 0); 629 gettimeofday (&tv, 0);
169 return tv.tv_sec + tv.tv_usec * 1e-6; 630 return tv.tv_sec + tv.tv_usec * 1e-6;
170#endif
171} 631}
632#endif
172 633
173inline ev_tstamp 634inline_size ev_tstamp
174get_clock (void) 635get_clock (void)
175{ 636{
176#if EV_USE_MONOTONIC 637#if EV_USE_MONOTONIC
177 if (expect_true (have_monotonic)) 638 if (expect_true (have_monotonic))
178 { 639 {
… …
183#endif 644#endif
184 645
185 return ev_time (); 646 return ev_time ();
186} 647}
187 648
649#if EV_MULTIPLICITY
188ev_tstamp 650ev_tstamp
189ev_now (EV_P) 651ev_now (EV_P)
190{ 652{
191 return rt_now; 653 return ev_rt_now;
192} 654}
655#endif
193 656
194#define array_roundsize(base,n) ((n) | 4 & ~3) 657void
195 658ev_sleep (ev_tstamp delay)
196#define array_needsize(base,cur,cnt,init) \ 659{
197 if (expect_false ((cnt) > cur)) \ 660 if (delay > 0.)
198 { \
199 int newcnt = cur; \
200 do \
201 { \
202 newcnt = array_roundsize (base, newcnt << 1); \
203 } \
204 while ((cnt) > newcnt); \
205 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \
207 init (base + cur, newcnt - cur); \
208 cur = newcnt; \
209 } 661 {
662#if EV_USE_NANOSLEEP
663 struct timespec ts;
664
665 ts.tv_sec = (time_t)delay;
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0);
669#elif defined(_WIN32)
670 Sleep ((unsigned long)(delay * 1e3));
671#else
672 struct timeval tv;
673
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */
680 select (0, 0, 0, 0, &tv);
681#endif
682 }
683}
210 684
211/*****************************************************************************/ 685/*****************************************************************************/
212 686
213typedef struct 687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
214{
215 struct ev_watcher_list *head;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219 688
220static ANFD *anfds; 689/* find a suitable new size for the given array, */
221static int anfdmax; 690/* hopefully by rounding to a ncie-to-malloc size */
222 691inline_size int
223static void 692array_nextsize (int elem, int cur, int cnt)
224anfds_init (ANFD *base, int count)
225{ 693{
226 while (count--) 694 int ncur = cur + 1;
227 {
228 base->head = 0;
229 base->events = EV_NONE;
230 base->reify = 0;
231 695
232 ++base; 696 do
697 ncur <<= 1;
698 while (cnt > ncur);
699
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
233 } 702 {
234} 703 ncur *= elem;
235 704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
236typedef struct 705 ncur = ncur - sizeof (void *) * 4;
237{ 706 ncur /= elem;
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245static void
246event (EV_P_ W w, int events)
247{
248 if (w->pending)
249 { 707 }
708
709 return ncur;
710}
711
712static noinline void *
713array_realloc (int elem, void *base, int *cur, int cnt)
714{
715 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur);
717}
718
719#define array_init_zero(base,count) \
720 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721
722#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \
724 { \
725 int ocur_ = (cur); \
726 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \
729 }
730
731#if 0
732#define array_slim(type,stem) \
733 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
734 { \
735 stem ## max = array_roundsize (stem ## cnt >> 1); \
736 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
737 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
738 }
739#endif
740
741#define array_free(stem, idx) \
742 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
743
744/*****************************************************************************/
745
746/* dummy callback for pending events */
747static void noinline
748pendingcb (EV_P_ ev_prepare *w, int revents)
749{
750}
751
752void noinline
753ev_feed_event (EV_P_ void *w, int revents)
754{
755 W w_ = (W)w;
756 int pri = ABSPRI (w_);
757
758 if (expect_false (w_->pending))
759 pendings [pri][w_->pending - 1].events |= revents;
760 else
761 {
762 w_->pending = ++pendingcnt [pri];
763 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
764 pendings [pri][w_->pending - 1].w = w_;
250 pendings [ABSPRI (w)][w->pending - 1].events |= events; 765 pendings [pri][w_->pending - 1].events = revents;
251 return;
252 } 766 }
253
254 w->pending = ++pendingcnt [ABSPRI (w)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
256 pendings [ABSPRI (w)][w->pending - 1].w = w;
257 pendings [ABSPRI (w)][w->pending - 1].events = events;
258} 767}
259 768
260static void 769inline_speed void
770feed_reverse (EV_P_ W w)
771{
772 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
773 rfeeds [rfeedcnt++] = w;
774}
775
776inline_size void
777feed_reverse_done (EV_P_ int revents)
778{
779 do
780 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
781 while (rfeedcnt);
782}
783
784inline_speed void
261queue_events (EV_P_ W *events, int eventcnt, int type) 785queue_events (EV_P_ W *events, int eventcnt, int type)
262{ 786{
263 int i; 787 int i;
264 788
265 for (i = 0; i < eventcnt; ++i) 789 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type); 790 ev_feed_event (EV_A_ events [i], type);
267} 791}
268 792
269static void 793/*****************************************************************************/
794
795inline_speed void
270fd_event (EV_P_ int fd, int events) 796fd_event_nc (EV_P_ int fd, int revents)
271{ 797{
272 ANFD *anfd = anfds + fd; 798 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 799 ev_io *w;
274 800
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276 { 802 {
277 int ev = w->events & events; 803 int ev = w->events & revents;
278 804
279 if (ev) 805 if (ev)
280 event (EV_A_ (W)w, ev); 806 ev_feed_event (EV_A_ (W)w, ev);
281 } 807 }
282} 808}
283 809
284/*****************************************************************************/ 810/* do not submit kernel events for fds that have reify set */
811/* because that means they changed while we were polling for new events */
812inline_speed void
813fd_event (EV_P_ int fd, int revents)
814{
815 ANFD *anfd = anfds + fd;
285 816
286static int *fdchanges; 817 if (expect_true (!anfd->reify))
287static int fdchangemax, fdchangecnt; 818 fd_event_nc (EV_A_ fd, revents);
819}
288 820
289static void 821void
822ev_feed_fd_event (EV_P_ int fd, int revents)
823{
824 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents);
826}
827
828/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */
830inline_size void
290fd_reify (EV_P) 831fd_reify (EV_P)
291{ 832{
292 int i; 833 int i;
293 834
294 for (i = 0; i < fdchangecnt; ++i) 835 for (i = 0; i < fdchangecnt; ++i)
295 { 836 {
296 int fd = fdchanges [i]; 837 int fd = fdchanges [i];
297 ANFD *anfd = anfds + fd; 838 ANFD *anfd = anfds + fd;
298 struct ev_io *w; 839 ev_io *w;
299 840
300 int events = 0; 841 unsigned char events = 0;
301 842
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303 events |= w->events; 844 events |= (unsigned char)w->events;
304 845
305 anfd->reify = 0; 846#if EV_SELECT_IS_WINSOCKET
306 847 if (events)
307 if (anfd->events != events)
308 { 848 {
309 method_modify (EV_A_ fd, anfd->events, events); 849 unsigned long arg;
310 anfd->events = events; 850 #ifdef EV_FD_TO_WIN32_HANDLE
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
852 #else
853 anfd->handle = _get_osfhandle (fd);
854 #endif
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
311 } 856 }
857#endif
858
859 {
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events);
868 }
312 } 869 }
313 870
314 fdchangecnt = 0; 871 fdchangecnt = 0;
315} 872}
316 873
317static void 874/* something about the given fd changed */
875inline_size void
318fd_change (EV_P_ int fd) 876fd_change (EV_P_ int fd, int flags)
319{ 877{
320 if (anfds [fd].reify || fdchangecnt < 0) 878 unsigned char reify = anfds [fd].reify;
321 return;
322
323 anfds [fd].reify = 1; 879 anfds [fd].reify |= flags;
324 880
881 if (expect_true (!reify))
882 {
325 ++fdchangecnt; 883 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 884 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327 fdchanges [fdchangecnt - 1] = fd; 885 fdchanges [fdchangecnt - 1] = fd;
886 }
328} 887}
329 888
330static void 889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void
331fd_kill (EV_P_ int fd) 891fd_kill (EV_P_ int fd)
332{ 892{
333 struct ev_io *w; 893 ev_io *w;
334 894
335 while ((w = (struct ev_io *)anfds [fd].head)) 895 while ((w = (ev_io *)anfds [fd].head))
336 { 896 {
337 ev_io_stop (EV_A_ w); 897 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 899 }
900}
901
902/* check whether the given fd is atcually valid, for error recovery */
903inline_size int
904fd_valid (int fd)
905{
906#ifdef _WIN32
907 return _get_osfhandle (fd) != -1;
908#else
909 return fcntl (fd, F_GETFD) != -1;
910#endif
340} 911}
341 912
342/* called on EBADF to verify fds */ 913/* called on EBADF to verify fds */
343static void 914static void noinline
344fd_ebadf (EV_P) 915fd_ebadf (EV_P)
345{ 916{
346 int fd; 917 int fd;
347 918
348 for (fd = 0; fd < anfdmax; ++fd) 919 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 920 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 921 if (!fd_valid (fd) && errno == EBADF)
351 fd_kill (EV_A_ fd); 922 fd_kill (EV_A_ fd);
352} 923}
353 924
354/* called on ENOMEM in select/poll to kill some fds and retry */ 925/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 926static void noinline
356fd_enomem (EV_P) 927fd_enomem (EV_P)
357{ 928{
358 int fd = anfdmax; 929 int fd;
359 930
360 while (fd--) 931 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 932 if (anfds [fd].events)
362 { 933 {
363 close (fd);
364 fd_kill (EV_A_ fd); 934 fd_kill (EV_A_ fd);
365 return; 935 return;
366 } 936 }
367} 937}
368 938
939/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline
941fd_rearm_all (EV_P)
942{
943 int fd;
944
945 for (fd = 0; fd < anfdmax; ++fd)
946 if (anfds [fd].events)
947 {
948 anfds [fd].events = 0;
949 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 }
952}
953
369/*****************************************************************************/ 954/*****************************************************************************/
370 955
371static struct ev_timer **timers; 956/*
372static int timermax, timercnt; 957 * the heap functions want a real array index. array index 0 uis guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree.
960 */
373 961
374static struct ev_periodic **periodics; 962/*
375static int periodicmax, periodiccnt; 963 * at the moment we allow libev the luxury of two heaps,
964 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
965 * which is more cache-efficient.
966 * the difference is about 5% with 50000+ watchers.
967 */
968#if EV_USE_4HEAP
376 969
377static void 970#define DHEAP 4
378upheap (WT *timers, int k) 971#define HEAP0 (DHEAP - 1) /* index of first element in heap */
379{ 972#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
380 WT w = timers [k]; 973#define UPHEAP_DONE(p,k) ((p) == (k))
381 974
382 while (k && timers [k >> 1]->at > w->at) 975/* away from the root */
383 { 976inline_speed void
384 timers [k] = timers [k >> 1];
385 timers [k]->active = k + 1;
386 k >>= 1;
387 }
388
389 timers [k] = w;
390 timers [k]->active = k + 1;
391
392}
393
394static void
395downheap (WT *timers, int N, int k) 977downheap (ANHE *heap, int N, int k)
396{ 978{
397 WT w = timers [k]; 979 ANHE he = heap [k];
980 ANHE *E = heap + N + HEAP0;
398 981
399 while (k < (N >> 1)) 982 for (;;)
400 { 983 {
401 int j = k << 1; 984 ev_tstamp minat;
985 ANHE *minpos;
986 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
402 987
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 988 /* find minimum child */
989 if (expect_true (pos + DHEAP - 1 < E))
404 ++j; 990 {
405 991 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
406 if (w->at <= timers [j]->at) 992 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
993 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
994 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
995 }
996 else if (pos < E)
997 {
998 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
999 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1000 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1001 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1002 }
1003 else
407 break; 1004 break;
408 1005
409 timers [k] = timers [j]; 1006 if (ANHE_at (he) <= minat)
410 timers [k]->active = k + 1; 1007 break;
1008
1009 heap [k] = *minpos;
1010 ev_active (ANHE_w (*minpos)) = k;
1011
1012 k = minpos - heap;
1013 }
1014
1015 heap [k] = he;
1016 ev_active (ANHE_w (he)) = k;
1017}
1018
1019#else /* 4HEAP */
1020
1021#define HEAP0 1
1022#define HPARENT(k) ((k) >> 1)
1023#define UPHEAP_DONE(p,k) (!(p))
1024
1025/* away from the root */
1026inline_speed void
1027downheap (ANHE *heap, int N, int k)
1028{
1029 ANHE he = heap [k];
1030
1031 for (;;)
1032 {
1033 int c = k << 1;
1034
1035 if (c > N + HEAP0 - 1)
1036 break;
1037
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0;
1040
1041 if (ANHE_at (he) <= ANHE_at (heap [c]))
1042 break;
1043
1044 heap [k] = heap [c];
1045 ev_active (ANHE_w (heap [k])) = k;
1046
411 k = j; 1047 k = c;
1048 }
1049
1050 heap [k] = he;
1051 ev_active (ANHE_w (he)) = k;
1052}
1053#endif
1054
1055/* towards the root */
1056inline_speed void
1057upheap (ANHE *heap, int k)
1058{
1059 ANHE he = heap [k];
1060
1061 for (;;)
412 } 1062 {
1063 int p = HPARENT (k);
413 1064
414 timers [k] = w; 1065 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
415 timers [k]->active = k + 1; 1066 break;
1067
1068 heap [k] = heap [p];
1069 ev_active (ANHE_w (heap [k])) = k;
1070 k = p;
1071 }
1072
1073 heap [k] = he;
1074 ev_active (ANHE_w (he)) = k;
1075}
1076
1077/* move an element suitably so it is in a correct place */
1078inline_size void
1079adjustheap (ANHE *heap, int N, int k)
1080{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
1082 upheap (heap, k);
1083 else
1084 downheap (heap, N, k);
1085}
1086
1087/* rebuild the heap: this function is used only once and executed rarely */
1088inline_size void
1089reheap (ANHE *heap, int N)
1090{
1091 int i;
1092
1093 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1094 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1095 for (i = 0; i < N; ++i)
1096 upheap (heap, i + HEAP0);
416} 1097}
417 1098
418/*****************************************************************************/ 1099/*****************************************************************************/
419 1100
1101/* associate signal watchers to a signal signal */
420typedef struct 1102typedef struct
421{ 1103{
422 struct ev_watcher_list *head; 1104 WL head;
423 sig_atomic_t volatile gotsig; 1105 EV_ATOMIC_T gotsig;
424} ANSIG; 1106} ANSIG;
425 1107
426static ANSIG *signals; 1108static ANSIG *signals;
427static int signalmax; 1109static int signalmax;
428 1110
429static int sigpipe [2]; 1111static EV_ATOMIC_T gotsig;
430static sig_atomic_t volatile gotsig;
431static struct ev_io sigev;
432 1112
1113/*****************************************************************************/
1114
1115/* used to prepare libev internal fd's */
1116/* this is not fork-safe */
1117inline_speed void
1118fd_intern (int fd)
1119{
1120#ifdef _WIN32
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128
1129static void noinline
1130evpipe_init (EV_P)
1131{
1132 if (!ev_is_active (&pipe_w))
1133 {
1134#if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0);
1138
1139 if (evfd >= 0)
1140 {
1141 evpipe [0] = -1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */
1143 ev_io_set (&pipe_w, evfd, EV_READ);
1144 }
1145 else
1146#endif
1147 {
1148 while (pipe (evpipe))
1149 ev_syserr ("(libev) error creating signal/async pipe");
1150
1151 fd_intern (evpipe [0]);
1152 fd_intern (evpipe [1]);
1153 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1154 }
1155
1156 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 }
1159}
1160
1161inline_size void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{
1164 if (!*flag)
1165 {
1166 int old_errno = errno; /* save errno because write might clobber it */
1167
1168 *flag = 1;
1169
1170#if EV_USE_EVENTFD
1171 if (evfd >= 0)
1172 {
1173 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t));
1175 }
1176 else
1177#endif
1178 write (evpipe [1], &old_errno, 1);
1179
1180 errno = old_errno;
1181 }
1182}
1183
1184/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */
433static void 1186static void
434signals_init (ANSIG *base, int count) 1187pipecb (EV_P_ ev_io *iow, int revents)
435{ 1188{
436 while (count--) 1189#if EV_USE_EVENTFD
1190 if (evfd >= 0)
1191 {
1192 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t));
437 { 1194 }
438 base->head = 0; 1195 else
1196#endif
1197 {
1198 char dummy;
1199 read (evpipe [0], &dummy, 1);
1200 }
1201
1202 if (gotsig && ev_is_default_loop (EV_A))
1203 {
1204 int signum;
439 base->gotsig = 0; 1205 gotsig = 0;
440 1206
441 ++base; 1207 for (signum = signalmax; signum--; )
1208 if (signals [signum].gotsig)
1209 ev_feed_signal_event (EV_A_ signum + 1);
1210 }
1211
1212#if EV_ASYNC_ENABLE
1213 if (gotasync)
442 } 1214 {
1215 int i;
1216 gotasync = 0;
1217
1218 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent)
1220 {
1221 asyncs [i]->sent = 0;
1222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1223 }
1224 }
1225#endif
443} 1226}
1227
1228/*****************************************************************************/
444 1229
445static void 1230static void
446sighandler (int signum) 1231ev_sighandler (int signum)
447{ 1232{
1233#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct;
1235#endif
1236
1237#if _WIN32
1238 signal (signum, ev_sighandler);
1239#endif
1240
448 signals [signum - 1].gotsig = 1; 1241 signals [signum - 1].gotsig = 1;
449 1242 evpipe_write (EV_A_ &gotsig);
450 if (!gotsig)
451 {
452 int old_errno = errno;
453 gotsig = 1;
454 write (sigpipe [1], &signum, 1);
455 errno = old_errno;
456 }
457} 1243}
458 1244
1245void noinline
1246ev_feed_signal_event (EV_P_ int signum)
1247{
1248 WL w;
1249
1250#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1252#endif
1253
1254 --signum;
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return;
1258
1259 signals [signum].gotsig = 0;
1260
1261 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263}
1264
1265#if EV_USE_SIGNALFD
459static void 1266static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 1267sigfdcb (EV_P_ ev_io *iow, int revents)
461{ 1268{
462 struct ev_watcher_list *w; 1269 struct signalfd_siginfo si[4], *sip;
463 int signum;
464 1270
465 read (sigpipe [0], &revents, 1); 1271 for (;;)
466 gotsig = 0;
467
468 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig)
470 { 1272 {
471 signals [signum].gotsig = 0; 1273 ssize_t res = read (sigfd, si, sizeof (si));
472 1274
473 for (w = signals [signum].head; w; w = w->next) 1275 /* not ISO-C, as res might be -1, but works with SuS */
474 event (EV_A_ (W)w, EV_SIGNAL); 1276 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1277 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1278
1279 if (res < (ssize_t)sizeof (si))
1280 break;
475 } 1281 }
476} 1282}
477
478static void
479siginit (EV_P)
480{
481#ifndef WIN32
482 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
483 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485 /* rather than sort out wether we really need nb, set it */
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif 1283#endif
489
490 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev);
492}
493 1284
494/*****************************************************************************/ 1285/*****************************************************************************/
495 1286
496static struct ev_idle **idles; 1287static WL childs [EV_PID_HASHSIZE];
497static int idlemax, idlecnt;
498 1288
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506
507static struct ev_child *childs [PID_HASHSIZE];
508static struct ev_signal childev;
509
510#ifndef WIN32 1289#ifndef _WIN32
1290
1291static ev_signal childev;
1292
1293#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0
1295#endif
1296
1297/* handle a single child status event */
1298inline_speed void
1299child_reap (EV_P_ int chain, int pid, int status)
1300{
1301 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 {
1306 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1)))
1308 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1310 w->rpid = pid;
1311 w->rstatus = status;
1312 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1313 }
1314 }
1315}
511 1316
512#ifndef WCONTINUED 1317#ifndef WCONTINUED
513# define WCONTINUED 0 1318# define WCONTINUED 0
514#endif 1319#endif
515 1320
1321/* called on sigchld etc., calls waitpid */
516static void 1322static void
517child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
518{
519 struct ev_child *w;
520
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid)
523 {
524 w->priority = sw->priority; /* need to do it *now* */
525 w->rpid = pid;
526 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD);
528 }
529}
530
531static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 1323childcb (EV_P_ ev_signal *sw, int revents)
533{ 1324{
534 int pid, status; 1325 int pid, status;
535 1326
1327 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1328 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 1329 if (!WCONTINUED
1330 || errno != EINVAL
1331 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1332 return;
1333
538 /* make sure we are called again until all childs have been reaped */ 1334 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */
539 event (EV_A_ (W)sw, EV_SIGNAL); 1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 1337
541 child_reap (EV_A_ sw, pid, pid, status); 1338 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1)
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
543 }
544} 1341}
545 1342
546#endif 1343#endif
547 1344
548/*****************************************************************************/ 1345/*****************************************************************************/
549 1346
1347#if EV_USE_PORT
1348# include "ev_port.c"
1349#endif
550#if EV_USE_KQUEUE 1350#if EV_USE_KQUEUE
551# include "ev_kqueue.c" 1351# include "ev_kqueue.c"
552#endif 1352#endif
553#if EV_USE_EPOLL 1353#if EV_USE_EPOLL
554# include "ev_epoll.c" 1354# include "ev_epoll.c"
555#endif 1355#endif
556#if EV_USEV_POLL 1356#if EV_USE_POLL
557# include "ev_poll.c" 1357# include "ev_poll.c"
558#endif 1358#endif
559#if EV_USE_SELECT 1359#if EV_USE_SELECT
560# include "ev_select.c" 1360# include "ev_select.c"
561#endif 1361#endif
… …
571{ 1371{
572 return EV_VERSION_MINOR; 1372 return EV_VERSION_MINOR;
573} 1373}
574 1374
575/* return true if we are running with elevated privileges and should ignore env variables */ 1375/* return true if we are running with elevated privileges and should ignore env variables */
576static int 1376int inline_size
577enable_secure (void) 1377enable_secure (void)
578{ 1378{
579#ifdef WIN32 1379#ifdef _WIN32
580 return 0; 1380 return 0;
581#else 1381#else
582 return getuid () != geteuid () 1382 return getuid () != geteuid ()
583 || getgid () != getegid (); 1383 || getgid () != getegid ();
584#endif 1384#endif
585} 1385}
586 1386
1387unsigned int
1388ev_supported_backends (void)
1389{
1390 unsigned int flags = 0;
1391
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1393 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1394 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1395 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397
1398 return flags;
1399}
1400
1401unsigned int
1402ev_recommended_backends (void)
1403{
1404 unsigned int flags = ev_supported_backends ();
1405
1406#ifndef __NetBSD__
1407 /* kqueue is borked on everything but netbsd apparently */
1408 /* it usually doesn't work correctly on anything but sockets and pipes */
1409 flags &= ~EVBACKEND_KQUEUE;
1410#endif
1411#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif
1416
1417 return flags;
1418}
1419
1420unsigned int
1421ev_embeddable_backends (void)
1422{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1424
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */
1427 flags &= ~EVBACKEND_EPOLL;
1428
1429 return flags;
1430}
1431
1432unsigned int
1433ev_backend (EV_P)
1434{
1435 return backend;
1436}
1437
1438#if EV_MINIMAL < 2
1439unsigned int
1440ev_loop_count (EV_P)
1441{
1442 return loop_count;
1443}
1444
1445unsigned int
1446ev_loop_depth (EV_P)
1447{
1448 return loop_depth;
1449}
1450
1451void
1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1453{
1454 io_blocktime = interval;
1455}
1456
1457void
1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1459{
1460 timeout_blocktime = interval;
1461}
1462
1463void
1464ev_set_userdata (EV_P_ void *data)
1465{
1466 userdata = data;
1467}
1468
1469void *
1470ev_userdata (EV_P)
1471{
1472 return userdata;
1473}
1474
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1476{
1477 invoke_cb = invoke_pending_cb;
1478}
1479
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1481{
1482 release_cb = release;
1483 acquire_cb = acquire;
1484}
1485#endif
1486
1487/* initialise a loop structure, must be zero-initialised */
1488static void noinline
1489loop_init (EV_P_ unsigned int flags)
1490{
1491 if (!backend)
1492 {
1493#if EV_USE_REALTIME
1494 if (!have_realtime)
1495 {
1496 struct timespec ts;
1497
1498 if (!clock_gettime (CLOCK_REALTIME, &ts))
1499 have_realtime = 1;
1500 }
1501#endif
1502
1503#if EV_USE_MONOTONIC
1504 if (!have_monotonic)
1505 {
1506 struct timespec ts;
1507
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1;
1510 }
1511#endif
1512
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */
1534#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid ();
1537#endif
1538
1539 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS"));
1543
1544 if (!(flags & 0x0000ffffU))
1545 flags |= ev_recommended_backends ();
1546
1547#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif
1550#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1552#endif
1553#if EV_USE_EPOLL
1554 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1555#endif
1556#if EV_USE_POLL
1557 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1558#endif
1559#if EV_USE_SELECT
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif
1562
1563 ev_prepare_init (&pending_w, pendingcb);
1564
1565 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI);
1567 }
1568}
1569
1570/* free up a loop structure */
1571static void noinline
1572loop_destroy (EV_P)
1573{
1574 int i;
1575
1576 if (ev_is_active (&pipe_w))
1577 {
1578 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/
1580
1581#if EV_USE_EVENTFD
1582 if (evfd >= 0)
1583 close (evfd);
1584#endif
1585
1586 if (evpipe [0] >= 0)
1587 {
1588 close (evpipe [0]);
1589 close (evpipe [1]);
1590 }
1591 }
1592
1593#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd);
1600 }
1601#endif
1602
1603#if EV_USE_INOTIFY
1604 if (fs_fd >= 0)
1605 close (fs_fd);
1606#endif
1607
1608 if (backend_fd >= 0)
1609 close (backend_fd);
1610
1611#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif
1614#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1616#endif
1617#if EV_USE_EPOLL
1618 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1619#endif
1620#if EV_USE_POLL
1621 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1622#endif
1623#if EV_USE_SELECT
1624 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1625#endif
1626
1627 for (i = NUMPRI; i--; )
1628 {
1629 array_free (pending, [i]);
1630#if EV_IDLE_ENABLE
1631 array_free (idle, [i]);
1632#endif
1633 }
1634
1635 ev_free (anfds); anfdmax = 0;
1636
1637 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY);
1641#if EV_PERIODIC_ENABLE
1642 array_free (periodic, EMPTY);
1643#endif
1644#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY);
1646#endif
1647 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY);
1651#endif
1652
1653 backend = 0;
1654}
1655
1656#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P);
1658#endif
1659
1660inline_size void
1661loop_fork (EV_P)
1662{
1663#if EV_USE_PORT
1664 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1665#endif
1666#if EV_USE_KQUEUE
1667 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1668#endif
1669#if EV_USE_EPOLL
1670 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1671#endif
1672#if EV_USE_INOTIFY
1673 infy_fork (EV_A);
1674#endif
1675
1676 if (ev_is_active (&pipe_w))
1677 {
1678 /* this "locks" the handlers against writing to the pipe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684
1685 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w);
1687
1688#if EV_USE_EVENTFD
1689 if (evfd >= 0)
1690 close (evfd);
1691#endif
1692
1693 if (evpipe [0] >= 0)
1694 {
1695 close (evpipe [0]);
1696 close (evpipe [1]);
1697 }
1698
1699 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */
1701 pipecb (EV_A_ &pipe_w, EV_READ);
1702 }
1703
1704 postfork = 0;
1705}
1706
1707#if EV_MULTIPLICITY
1708
1709struct ev_loop *
1710ev_loop_new (unsigned int flags)
1711{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713
1714 memset (loop, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags);
1716
1717 if (ev_backend (EV_A))
1718 return loop;
1719
1720 return 0;
1721}
1722
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */
1736
1737#if EV_VERIFY
1738static void noinline
1739verify_watcher (EV_P_ W w)
1740{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742
1743 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745}
1746
1747static void noinline
1748verify_heap (EV_P_ ANHE *heap, int N)
1749{
1750 int i;
1751
1752 for (i = HEAP0; i < N + HEAP0; ++i)
1753 {
1754 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1755 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1756 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1757
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 }
1760}
1761
1762static void noinline
1763array_verify (EV_P_ W *ws, int cnt)
1764{
1765 while (cnt--)
1766 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]);
1769 }
1770}
1771#endif
1772
1773#if EV_MINIMAL < 2
1774void
1775ev_loop_verify (EV_P)
1776{
1777#if EV_VERIFY
1778 int i;
1779 WL w;
1780
1781 assert (activecnt >= -1);
1782
1783 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786
1787 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i)
1789 for (w = anfds [i].head; w; w = w->next)
1790 {
1791 verify_watcher (EV_A_ (W)w);
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 }
1795
1796 assert (timermax >= timercnt);
1797 verify_heap (EV_A_ timers, timercnt);
1798
1799#if EV_PERIODIC_ENABLE
1800 assert (periodicmax >= periodiccnt);
1801 verify_heap (EV_A_ periodics, periodiccnt);
1802#endif
1803
1804 for (i = NUMPRI; i--; )
1805 {
1806 assert (pendingmax [i] >= pendingcnt [i]);
1807#if EV_IDLE_ENABLE
1808 assert (idleall >= 0);
1809 assert (idlemax [i] >= idlecnt [i]);
1810 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1811#endif
1812 }
1813
1814#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif
1818
1819#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif
1823
1824 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt);
1826
1827 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt);
1829
1830# if 0
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1833# endif
1834#endif
1835}
1836#endif
1837
1838#if EV_MULTIPLICITY
1839struct ev_loop *
1840ev_default_loop_init (unsigned int flags)
1841#else
587int 1842int
588ev_method (EV_P) 1843ev_default_loop (unsigned int flags)
1844#endif
589{ 1845{
590 return method; 1846 if (!ev_default_loop_ptr)
591}
592
593int
594ev_init (EV_P_ int methods)
595{
596 if (!method)
597 {
598#if EV_USE_MONOTONIC
599 { 1847 {
600 struct timespec ts; 1848#if EV_MULTIPLICITY
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
602 have_monotonic = 1; 1850#else
603 } 1851 ev_default_loop_ptr = 1;
604#endif 1852#endif
605 1853
606 rt_now = ev_time (); 1854 loop_init (EV_A_ flags);
607 mn_now = get_clock ();
608 now_floor = mn_now;
609 diff = rt_now - mn_now;
610 1855
611 if (pipe (sigpipe)) 1856 if (ev_backend (EV_A))
612 return 0;
613
614 if (methods == EVMETHOD_AUTO)
615 if (!enable_secure () && getenv ("LIBmethodS"))
616 methods = atoi (getenv ("LIBmethodS"));
617 else
618 methods = EVMETHOD_ANY;
619
620 method = 0;
621#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623#endif
624#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
626#endif
627#if EV_USEV_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629#endif
630#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632#endif
633
634 if (method)
635 { 1857 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A);
639
640#ifndef WIN32 1858#ifndef _WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 1859 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 1860 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 1861 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 1863#endif
645 } 1864 }
1865 else
1866 ev_default_loop_ptr = 0;
646 } 1867 }
647 1868
648 return method; 1869 return ev_default_loop_ptr;
1870}
1871
1872void
1873ev_default_destroy (void)
1874{
1875#if EV_MULTIPLICITY
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */
649} 1897}
650 1898
651/*****************************************************************************/ 1899/*****************************************************************************/
652 1900
653void 1901void
654ev_fork_prepare (void) 1902ev_invoke (EV_P_ void *w, int revents)
655{ 1903{
656 /* nop */ 1904 EV_CB_INVOKE ((W)w, revents);
657} 1905}
658 1906
659void 1907unsigned int
660ev_fork_parent (void) 1908ev_pending_count (EV_P)
661{ 1909{
662 /* nop */ 1910 int pri;
663} 1911 unsigned int count = 0;
664 1912
665void 1913 for (pri = NUMPRI; pri--; )
666ev_fork_child (void) 1914 count += pendingcnt [pri];
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif
672 1915
673 ev_io_stop (&sigev); 1916 return count;
674 close (sigpipe [0]);
675 close (sigpipe [1]);
676 pipe (sigpipe);
677 siginit ();
678} 1917}
679 1918
680/*****************************************************************************/ 1919void noinline
681 1920ev_invoke_pending (EV_P)
682static void
683call_pending (EV_P)
684{ 1921{
685 int pri; 1922 int pri;
686 1923
687 for (pri = NUMPRI; pri--; ) 1924 for (pri = NUMPRI; pri--; )
688 while (pendingcnt [pri]) 1925 while (pendingcnt [pri])
689 { 1926 {
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 1928
692 if (p->w) 1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
693 { 1930 /* ^ this is no longer true, as pending_w could be here */
1931
694 p->w->pending = 0; 1932 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 1933 EV_CB_INVOKE (p->w, p->events);
696 } 1934 EV_FREQUENT_CHECK;
697 } 1935 }
698} 1936}
699 1937
700static void 1938#if EV_IDLE_ENABLE
1939/* make idle watchers pending. this handles the "call-idle */
1940/* only when higher priorities are idle" logic */
1941inline_size void
701timers_reify (EV_P) 1942idle_reify (EV_P)
702{ 1943{
703 while (timercnt && timers [0]->at <= mn_now) 1944 if (expect_false (idleall))
704 { 1945 {
705 struct ev_timer *w = timers [0]; 1946 int pri;
706 1947
707 /* first reschedule or stop timer */ 1948 for (pri = NUMPRI; pri--; )
708 if (w->repeat)
709 { 1949 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1950 if (pendingcnt [pri])
711 w->at = mn_now + w->repeat; 1951 break;
712 downheap ((WT *)timers, timercnt, 0);
713 }
714 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1952
717 event ((W)w, EV_TIMEOUT); 1953 if (idlecnt [pri])
718 }
719}
720
721static void
722periodics_reify (EV_P)
723{
724 while (periodiccnt && periodics [0]->at <= rt_now)
725 {
726 struct ev_periodic *w = periodics [0];
727
728 /* first reschedule or stop timer */
729 if (w->interval)
730 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0);
734 }
735 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737
738 event (EV_A_ (W)w, EV_PERIODIC);
739 }
740}
741
742static void
743periodics_reschedule (EV_P_ ev_tstamp diff)
744{
745 int i;
746
747 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i)
749 {
750 struct ev_periodic *w = periodics [i];
751
752 if (w->interval)
753 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
755
756 if (fabs (diff) >= 1e-4)
757 { 1954 {
758 ev_periodic_stop (EV_A_ w); 1955 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
759 ev_periodic_start (EV_A_ w); 1956 break;
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 } 1957 }
763 } 1958 }
764 } 1959 }
765} 1960}
1961#endif
766 1962
767inline int 1963/* make timers pending */
768time_update_monotonic (EV_P) 1964inline_size void
1965timers_reify (EV_P)
769{ 1966{
770 mn_now = get_clock (); 1967 EV_FREQUENT_CHECK;
771 1968
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1969 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
773 {
774 rt_now = mn_now + diff;
775 return 0;
776 } 1970 {
777 else 1971 do
1972 {
1973 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1974
1975 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1976
1977 /* first reschedule or stop timer */
1978 if (w->repeat)
1979 {
1980 ev_at (w) += w->repeat;
1981 if (ev_at (w) < mn_now)
1982 ev_at (w) = mn_now;
1983
1984 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1985
1986 ANHE_at_cache (timers [HEAP0]);
1987 downheap (timers, timercnt, HEAP0);
1988 }
1989 else
1990 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1991
1992 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w);
1994 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996
1997 feed_reverse_done (EV_A_ EV_TIMEOUT);
778 { 1998 }
779 now_floor = mn_now; 1999}
780 rt_now = ev_time (); 2000
781 return 1; 2001#if EV_PERIODIC_ENABLE
2002/* make periodics pending */
2003inline_size void
2004periodics_reify (EV_P)
2005{
2006 EV_FREQUENT_CHECK;
2007
2008 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
782 } 2009 {
783} 2010 int feed_count = 0;
784 2011
785static void 2012 do
786time_update (EV_P) 2013 {
2014 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2015
2016 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2017
2018 /* first reschedule or stop timer */
2019 if (w->reschedule_cb)
2020 {
2021 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2022
2023 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2024
2025 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0);
2027 }
2028 else if (w->interval)
2029 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0);
2046 }
2047 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2049
2050 EV_FREQUENT_CHECK;
2051 feed_reverse (EV_A_ (W)w);
2052 }
2053 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2054
2055 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 }
2057}
2058
2059/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2061static void noinline
2062periodics_reschedule (EV_P)
787{ 2063{
788 int i; 2064 int i;
789 2065
2066 /* adjust periodics after time jump */
2067 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2068 {
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070
2071 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2075
2076 ANHE_at_cache (periodics [i]);
2077 }
2078
2079 reheap (periodics, periodiccnt);
2080}
2081#endif
2082
2083/* adjust all timers by a given offset */
2084static void noinline
2085timers_reschedule (EV_P_ ev_tstamp adjust)
2086{
2087 int i;
2088
2089 for (i = 0; i < timercnt; ++i)
2090 {
2091 ANHE *he = timers + i + HEAP0;
2092 ANHE_w (*he)->at += adjust;
2093 ANHE_at_cache (*he);
2094 }
2095}
2096
2097/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */
2099inline_speed void
2100time_update (EV_P_ ev_tstamp max_block)
2101{
790#if EV_USE_MONOTONIC 2102#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 2103 if (expect_true (have_monotonic))
792 { 2104 {
793 if (time_update_monotonic (EV_A)) 2105 int i;
2106 ev_tstamp odiff = rtmn_diff;
2107
2108 mn_now = get_clock ();
2109
2110 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2111 /* interpolate in the meantime */
2112 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
794 { 2113 {
795 ev_tstamp odiff = diff; 2114 ev_rt_now = rtmn_diff + mn_now;
796 2115 return;
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 {
799 diff = rt_now - mn_now;
800
801 if (fabs (odiff - diff) < MIN_TIMEJUMP)
802 return; /* all is well */
803
804 rt_now = ev_time ();
805 mn_now = get_clock ();
806 now_floor = mn_now;
807 }
808
809 periodics_reschedule (EV_A_ diff - odiff);
810 /* no timer adjustment, as the monotonic clock doesn't jump */
811 } 2116 }
2117
2118 now_floor = mn_now;
2119 ev_rt_now = ev_time ();
2120
2121 /* loop a few times, before making important decisions.
2122 * on the choice of "4": one iteration isn't enough,
2123 * in case we get preempted during the calls to
2124 * ev_time and get_clock. a second call is almost guaranteed
2125 * to succeed in that case, though. and looping a few more times
2126 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here.
2128 */
2129 for (i = 4; --i; )
2130 {
2131 rtmn_diff = ev_rt_now - mn_now;
2132
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
2134 return; /* all is well */
2135
2136 ev_rt_now = ev_time ();
2137 mn_now = get_clock ();
2138 now_floor = mn_now;
2139 }
2140
2141 /* no timer adjustment, as the monotonic clock doesn't jump */
2142 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
2143# if EV_PERIODIC_ENABLE
2144 periodics_reschedule (EV_A);
2145# endif
812 } 2146 }
813 else 2147 else
814#endif 2148#endif
815 { 2149 {
816 rt_now = ev_time (); 2150 ev_rt_now = ev_time ();
817 2151
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2152 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
819 { 2153 {
820 periodics_reschedule (EV_A_ rt_now - mn_now);
821
822 /* adjust timers. this is easy, as the offset is the same for all */ 2154 /* adjust timers. this is easy, as the offset is the same for all of them */
823 for (i = 0; i < timercnt; ++i) 2155 timers_reschedule (EV_A_ ev_rt_now - mn_now);
824 timers [i]->at += diff; 2156#if EV_PERIODIC_ENABLE
2157 periodics_reschedule (EV_A);
2158#endif
825 } 2159 }
826 2160
827 mn_now = rt_now; 2161 mn_now = ev_rt_now;
828 } 2162 }
829} 2163}
830
831void
832ev_ref (EV_P)
833{
834 ++activecnt;
835}
836
837void
838ev_unref (EV_P)
839{
840 --activecnt;
841}
842
843static int loop_done;
844 2164
845void 2165void
846ev_loop (EV_P_ int flags) 2166ev_loop (EV_P_ int flags)
847{ 2167{
848 double block; 2168#if EV_MINIMAL < 2
849 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 2169 ++loop_depth;
2170#endif
2171
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2173
2174 loop_done = EVUNLOOP_CANCEL;
2175
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
850 2177
851 do 2178 do
852 { 2179 {
2180#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A);
2182#endif
2183
2184#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid))
2187 {
2188 curpid = getpid ();
2189 postfork = 1;
2190 }
2191#endif
2192
2193#if EV_FORK_ENABLE
2194 /* we might have forked, so queue fork handlers */
2195 if (expect_false (postfork))
2196 if (forkcnt)
2197 {
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING;
2200 }
2201#endif
2202
853 /* queue check watchers (and execute them) */ 2203 /* queue prepare watchers (and execute them) */
854 if (expect_false (preparecnt)) 2204 if (expect_false (preparecnt))
855 { 2205 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 2207 EV_INVOKE_PENDING;
858 } 2208 }
2209
2210 if (expect_false (loop_done))
2211 break;
2212
2213 /* we might have forked, so reify kernel state if necessary */
2214 if (expect_false (postfork))
2215 loop_fork (EV_A);
859 2216
860 /* update fd-related kernel structures */ 2217 /* update fd-related kernel structures */
861 fd_reify (EV_A); 2218 fd_reify (EV_A);
862 2219
863 /* calculate blocking time */ 2220 /* calculate blocking time */
2221 {
2222 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.;
864 2224
865 /* we only need this for !monotonic clockor timers, but as we basically 2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
866 always have timers, we just calculate it always */
867#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A);
870 else
871#endif
872 { 2226 {
873 rt_now = ev_time (); 2227 /* remember old timestamp for io_blocktime calculation */
874 mn_now = rt_now; 2228 ev_tstamp prev_mn_now = mn_now;
875 }
876 2229
877 if (flags & EVLOOP_NONBLOCK || idlecnt) 2230 /* update time to cancel out callback processing overhead */
878 block = 0.; 2231 time_update (EV_A_ 1e100);
879 else 2232
880 {
881 block = MAX_BLOCKTIME; 2233 waittime = MAX_BLOCKTIME;
882 2234
883 if (timercnt) 2235 if (timercnt)
884 { 2236 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
886 if (block > to) block = to; 2238 if (waittime > to) waittime = to;
887 } 2239 }
888 2240
2241#if EV_PERIODIC_ENABLE
889 if (periodiccnt) 2242 if (periodiccnt)
890 { 2243 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
892 if (block > to) block = to; 2245 if (waittime > to) waittime = to;
893 } 2246 }
2247#endif
894 2248
895 if (block < 0.) block = 0.; 2249 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime;
2252
2253 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime))
2255 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257
2258 if (sleeptime > waittime - backend_fudge)
2259 sleeptime = waittime - backend_fudge;
2260
2261 if (expect_true (sleeptime > 0.))
2262 {
2263 ev_sleep (sleeptime);
2264 waittime -= sleeptime;
2265 }
2266 }
896 } 2267 }
897 2268
898 method_poll (EV_A_ block); 2269#if EV_MINIMAL < 2
2270 ++loop_count;
2271#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
899 2275
900 /* update rt_now, do magic */ 2276 /* update ev_rt_now, do magic */
901 time_update (EV_A); 2277 time_update (EV_A_ waittime + sleeptime);
2278 }
902 2279
903 /* queue pending timers and reschedule them */ 2280 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 2281 timers_reify (EV_A); /* relative timers called last */
2282#if EV_PERIODIC_ENABLE
905 periodics_reify (EV_A); /* absolute timers called first */ 2283 periodics_reify (EV_A); /* absolute timers called first */
2284#endif
906 2285
2286#if EV_IDLE_ENABLE
907 /* queue idle watchers unless io or timers are pending */ 2287 /* queue idle watchers unless other events are pending */
908 if (!pendingcnt) 2288 idle_reify (EV_A);
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2289#endif
910 2290
911 /* queue check watchers, to be executed first */ 2291 /* queue check watchers, to be executed first */
912 if (checkcnt) 2292 if (expect_false (checkcnt))
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 2294
915 call_pending (EV_A); 2295 EV_INVOKE_PENDING;
916 printf ("activecnt %d\n", activecnt);//D
917 } 2296 }
918 while (activecnt && !loop_done); 2297 while (expect_true (
2298 activecnt
2299 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2301 ));
919 2302
920 if (loop_done != 2) 2303 if (loop_done == EVUNLOOP_ONE)
921 loop_done = 0; 2304 loop_done = EVUNLOOP_CANCEL;
2305
2306#if EV_MINIMAL < 2
2307 --loop_depth;
2308#endif
922} 2309}
923 2310
924void 2311void
925ev_unloop (EV_P_ int how) 2312ev_unloop (EV_P_ int how)
926{ 2313{
927 loop_done = how; 2314 loop_done = how;
928} 2315}
929 2316
2317void
2318ev_ref (EV_P)
2319{
2320 ++activecnt;
2321}
2322
2323void
2324ev_unref (EV_P)
2325{
2326 --activecnt;
2327}
2328
2329void
2330ev_now_update (EV_P)
2331{
2332 time_update (EV_A_ 1e100);
2333}
2334
2335void
2336ev_suspend (EV_P)
2337{
2338 ev_now_update (EV_A);
2339}
2340
2341void
2342ev_resume (EV_P)
2343{
2344 ev_tstamp mn_prev = mn_now;
2345
2346 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev);
2348#if EV_PERIODIC_ENABLE
2349 /* TODO: really do this? */
2350 periodics_reschedule (EV_A);
2351#endif
2352}
2353
930/*****************************************************************************/ 2354/*****************************************************************************/
2355/* singly-linked list management, used when the expected list length is short */
931 2356
932inline void 2357inline_size void
933wlist_add (WL *head, WL elem) 2358wlist_add (WL *head, WL elem)
934{ 2359{
935 elem->next = *head; 2360 elem->next = *head;
936 *head = elem; 2361 *head = elem;
937} 2362}
938 2363
939inline void 2364inline_size void
940wlist_del (WL *head, WL elem) 2365wlist_del (WL *head, WL elem)
941{ 2366{
942 while (*head) 2367 while (*head)
943 { 2368 {
944 if (*head == elem) 2369 if (*head == elem)
… …
949 2374
950 head = &(*head)->next; 2375 head = &(*head)->next;
951 } 2376 }
952} 2377}
953 2378
2379/* internal, faster, version of ev_clear_pending */
954inline void 2380inline_speed void
955ev_clear_pending (EV_P_ W w) 2381clear_pending (EV_P_ W w)
956{ 2382{
957 if (w->pending) 2383 if (w->pending)
958 { 2384 {
959 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2385 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
960 w->pending = 0; 2386 w->pending = 0;
961 } 2387 }
962} 2388}
963 2389
2390int
2391ev_clear_pending (EV_P_ void *w)
2392{
2393 W w_ = (W)w;
2394 int pending = w_->pending;
2395
2396 if (expect_true (pending))
2397 {
2398 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2399 p->w = (W)&pending_w;
2400 w_->pending = 0;
2401 return p->events;
2402 }
2403 else
2404 return 0;
2405}
2406
964inline void 2407inline_size void
2408pri_adjust (EV_P_ W w)
2409{
2410 int pri = ev_priority (w);
2411 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2412 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2413 ev_set_priority (w, pri);
2414}
2415
2416inline_speed void
965ev_start (EV_P_ W w, int active) 2417ev_start (EV_P_ W w, int active)
966{ 2418{
967 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2419 pri_adjust (EV_A_ w);
968 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
969
970 w->active = active; 2420 w->active = active;
971 ev_ref (EV_A); 2421 ev_ref (EV_A);
972} 2422}
973 2423
974inline void 2424inline_size void
975ev_stop (EV_P_ W w) 2425ev_stop (EV_P_ W w)
976{ 2426{
977 ev_unref (EV_A); 2427 ev_unref (EV_A);
978 w->active = 0; 2428 w->active = 0;
979} 2429}
980 2430
981/*****************************************************************************/ 2431/*****************************************************************************/
982 2432
983void 2433void noinline
984ev_io_start (EV_P_ struct ev_io *w) 2434ev_io_start (EV_P_ ev_io *w)
985{ 2435{
986 int fd = w->fd; 2436 int fd = w->fd;
987 2437
988 if (ev_is_active (w)) 2438 if (expect_false (ev_is_active (w)))
989 return; 2439 return;
990 2440
991 assert (("ev_io_start called with negative fd", fd >= 0)); 2441 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443
2444 EV_FREQUENT_CHECK;
992 2445
993 ev_start (EV_A_ (W)w, 1); 2446 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2448 wlist_add (&anfds[fd].head, (WL)w);
996 2449
997 fd_change (EV_A_ fd); 2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
998} 2451 w->events &= ~EV__IOFDSET;
999 2452
1000void 2453 EV_FREQUENT_CHECK;
2454}
2455
2456void noinline
1001ev_io_stop (EV_P_ struct ev_io *w) 2457ev_io_stop (EV_P_ ev_io *w)
1002{ 2458{
1003 ev_clear_pending (EV_A_ (W)w); 2459 clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 2460 if (expect_false (!ev_is_active (w)))
1005 return; 2461 return;
1006 2462
2463 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2464
2465 EV_FREQUENT_CHECK;
2466
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2467 wlist_del (&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 2468 ev_stop (EV_A_ (W)w);
1009 2469
1010 fd_change (EV_A_ w->fd); 2470 fd_change (EV_A_ w->fd, 1);
1011}
1012 2471
1013void 2472 EV_FREQUENT_CHECK;
2473}
2474
2475void noinline
1014ev_timer_start (EV_P_ struct ev_timer *w) 2476ev_timer_start (EV_P_ ev_timer *w)
1015{ 2477{
1016 if (ev_is_active (w)) 2478 if (expect_false (ev_is_active (w)))
1017 return; 2479 return;
1018 2480
1019 w->at += mn_now; 2481 ev_at (w) += mn_now;
1020 2482
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2483 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 2484
2485 EV_FREQUENT_CHECK;
2486
2487 ++timercnt;
1023 ev_start (EV_A_ (W)w, ++timercnt); 2488 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1024 array_needsize (timers, timermax, timercnt, ); 2489 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1025 timers [timercnt - 1] = w; 2490 ANHE_w (timers [ev_active (w)]) = (WT)w;
1026 upheap ((WT *)timers, timercnt - 1); 2491 ANHE_at_cache (timers [ev_active (w)]);
1027} 2492 upheap (timers, ev_active (w));
1028 2493
1029void 2494 EV_FREQUENT_CHECK;
2495
2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2497}
2498
2499void noinline
1030ev_timer_stop (EV_P_ struct ev_timer *w) 2500ev_timer_stop (EV_P_ ev_timer *w)
1031{ 2501{
1032 ev_clear_pending (EV_A_ (W)w); 2502 clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 2503 if (expect_false (!ev_is_active (w)))
1034 return; 2504 return;
1035 2505
1036 if (w->active < timercnt--) 2506 EV_FREQUENT_CHECK;
2507
2508 {
2509 int active = ev_active (w);
2510
2511 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2512
2513 --timercnt;
2514
2515 if (expect_true (active < timercnt + HEAP0))
1037 { 2516 {
1038 timers [w->active - 1] = timers [timercnt]; 2517 timers [active] = timers [timercnt + HEAP0];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 2518 adjustheap (timers, timercnt, active);
1040 } 2519 }
2520 }
1041 2521
1042 w->at = w->repeat; 2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now;
1043 2525
1044 ev_stop (EV_A_ (W)w); 2526 ev_stop (EV_A_ (W)w);
1045} 2527}
1046 2528
1047void 2529void noinline
1048ev_timer_again (EV_P_ struct ev_timer *w) 2530ev_timer_again (EV_P_ ev_timer *w)
1049{ 2531{
2532 EV_FREQUENT_CHECK;
2533
1050 if (ev_is_active (w)) 2534 if (ev_is_active (w))
1051 { 2535 {
1052 if (w->repeat) 2536 if (w->repeat)
1053 { 2537 {
1054 w->at = mn_now + w->repeat; 2538 ev_at (w) = mn_now + w->repeat;
2539 ANHE_at_cache (timers [ev_active (w)]);
1055 downheap ((WT *)timers, timercnt, w->active - 1); 2540 adjustheap (timers, timercnt, ev_active (w));
1056 } 2541 }
1057 else 2542 else
1058 ev_timer_stop (EV_A_ w); 2543 ev_timer_stop (EV_A_ w);
1059 } 2544 }
1060 else if (w->repeat) 2545 else if (w->repeat)
2546 {
2547 ev_at (w) = w->repeat;
1061 ev_timer_start (EV_A_ w); 2548 ev_timer_start (EV_A_ w);
1062} 2549 }
1063 2550
1064void 2551 EV_FREQUENT_CHECK;
2552}
2553
2554ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w)
2556{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558}
2559
2560#if EV_PERIODIC_ENABLE
2561void noinline
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 2562ev_periodic_start (EV_P_ ev_periodic *w)
1066{ 2563{
1067 if (ev_is_active (w)) 2564 if (expect_false (ev_is_active (w)))
1068 return; 2565 return;
1069 2566
2567 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval)
2570 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072 /* this formula differs from the one in periodic_reify because we do not always round up */ 2572 /* this formula differs from the one in periodic_reify because we do not always round up */
1073 if (w->interval)
1074 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 }
2575 else
2576 ev_at (w) = w->offset;
1075 2577
2578 EV_FREQUENT_CHECK;
2579
2580 ++periodiccnt;
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 2581 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 2582 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1078 periodics [periodiccnt - 1] = w; 2583 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 2584 ANHE_at_cache (periodics [ev_active (w)]);
1080} 2585 upheap (periodics, ev_active (w));
1081 2586
1082void 2587 EV_FREQUENT_CHECK;
2588
2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2590}
2591
2592void noinline
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 2593ev_periodic_stop (EV_P_ ev_periodic *w)
1084{ 2594{
1085 ev_clear_pending (EV_A_ (W)w); 2595 clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 2596 if (expect_false (!ev_is_active (w)))
1087 return; 2597 return;
1088 2598
1089 if (w->active < periodiccnt--) 2599 EV_FREQUENT_CHECK;
2600
2601 {
2602 int active = ev_active (w);
2603
2604 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2605
2606 --periodiccnt;
2607
2608 if (expect_true (active < periodiccnt + HEAP0))
1090 { 2609 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 2610 periodics [active] = periodics [periodiccnt + HEAP0];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 2611 adjustheap (periodics, periodiccnt, active);
1093 } 2612 }
2613 }
2614
2615 EV_FREQUENT_CHECK;
1094 2616
1095 ev_stop (EV_A_ (W)w); 2617 ev_stop (EV_A_ (W)w);
1096} 2618}
2619
2620void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w)
2622{
2623 /* TODO: use adjustheap and recalculation */
2624 ev_periodic_stop (EV_A_ w);
2625 ev_periodic_start (EV_A_ w);
2626}
2627#endif
1097 2628
1098#ifndef SA_RESTART 2629#ifndef SA_RESTART
1099# define SA_RESTART 0 2630# define SA_RESTART 0
1100#endif 2631#endif
1101 2632
1102void 2633void noinline
1103ev_signal_start (EV_P_ struct ev_signal *w) 2634ev_signal_start (EV_P_ ev_signal *w)
1104{ 2635{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
1105 if (ev_is_active (w)) 2639 if (expect_false (ev_is_active (w)))
1106 return; 2640 return;
1107 2641
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2643
2644 EV_FREQUENT_CHECK;
2645
2646#if EV_USE_SIGNALFD
2647 if (sigfd == -2)
2648 {
2649 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2650 if (sigfd < 0 && errno == EINVAL)
2651 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2652
2653 if (sigfd >= 0)
2654 {
2655 fd_intern (sigfd); /* doing it twice will not hurt */
2656
2657 sigemptyset (&sigfd_set);
2658
2659 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2660 ev_set_priority (&sigfd_w, EV_MAXPRI);
2661 ev_io_start (EV_A_ &sigfd_w);
2662 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2663 }
2664 }
2665
2666 if (sigfd >= 0)
2667 {
2668 /* TODO: check .head */
2669 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671
2672 signalfd (sigfd, &sigfd_set, 0);
2673 }
2674 else
2675#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688 if (sigfd < 0)/*TODO*/
2689 sigdelset (&prev, w->signum);
2690 sigprocmask (SIG_SETMASK, &prev, 0);
2691#endif
2692 }
1109 2693
1110 ev_start (EV_A_ (W)w, 1); 2694 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2695 wlist_add (&signals [w->signum - 1].head, (WL)w);
1113 2696
1114 if (!w->next) 2697 if (!((WL)w)->next)
1115 { 2698 {
2699#if _WIN32
2700 signal (w->signum, ev_sighandler);
2701#else
2702 if (sigfd < 0) /*TODO*/
2703 {
1116 struct sigaction sa; 2704 struct sigaction sa = { };
1117 sa.sa_handler = sighandler; 2705 sa.sa_handler = ev_sighandler;
1118 sigfillset (&sa.sa_mask); 2706 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2707 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 2708 sigaction (w->signum, &sa, 0);
2709 }
2710#endif
1121 } 2711 }
1122}
1123 2712
1124void 2713 EV_FREQUENT_CHECK;
2714}
2715
2716void noinline
1125ev_signal_stop (EV_P_ struct ev_signal *w) 2717ev_signal_stop (EV_P_ ev_signal *w)
1126{ 2718{
1127 ev_clear_pending (EV_A_ (W)w); 2719 clear_pending (EV_A_ (W)w);
1128 if (!ev_is_active (w)) 2720 if (expect_false (!ev_is_active (w)))
1129 return; 2721 return;
1130 2722
2723 EV_FREQUENT_CHECK;
2724
1131 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2725 wlist_del (&signals [w->signum - 1].head, (WL)w);
1132 ev_stop (EV_A_ (W)w); 2726 ev_stop (EV_A_ (W)w);
1133 2727
1134 if (!signals [w->signum - 1].head) 2728 if (!signals [w->signum - 1].head)
2729#if EV_USE_SIGNALFD
2730 if (sigfd >= 0)
2731 {
2732 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2733 sigdelset (&sigfd_set, w->signum);
2734 signalfd (sigfd, &sigfd_set, 0);
2735 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2736 /*TODO: maybe unblock signal? */
2737 }
2738 else
2739#endif
1135 signal (w->signum, SIG_DFL); 2740 signal (w->signum, SIG_DFL);
1136}
1137 2741
2742 EV_FREQUENT_CHECK;
2743}
2744
1138void 2745void
1139ev_idle_start (EV_P_ struct ev_idle *w) 2746ev_child_start (EV_P_ ev_child *w)
1140{ 2747{
2748#if EV_MULTIPLICITY
2749 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2750#endif
1141 if (ev_is_active (w)) 2751 if (expect_false (ev_is_active (w)))
1142 return; 2752 return;
1143 2753
2754 EV_FREQUENT_CHECK;
2755
1144 ev_start (EV_A_ (W)w, ++idlecnt); 2756 ev_start (EV_A_ (W)w, 1);
1145 array_needsize (idles, idlemax, idlecnt, ); 2757 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1146 idles [idlecnt - 1] = w;
1147}
1148 2758
2759 EV_FREQUENT_CHECK;
2760}
2761
1149void 2762void
1150ev_idle_stop (EV_P_ struct ev_idle *w) 2763ev_child_stop (EV_P_ ev_child *w)
1151{ 2764{
1152 ev_clear_pending (EV_A_ (W)w); 2765 clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w)) 2766 if (expect_false (!ev_is_active (w)))
1154 return; 2767 return;
1155 2768
1156 idles [w->active - 1] = idles [--idlecnt]; 2769 EV_FREQUENT_CHECK;
2770
2771 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1157 ev_stop (EV_A_ (W)w); 2772 ev_stop (EV_A_ (W)w);
1158}
1159 2773
1160void 2774 EV_FREQUENT_CHECK;
1161ev_prepare_start (EV_P_ struct ev_prepare *w) 2775}
2776
2777#if EV_STAT_ENABLE
2778
2779# ifdef _WIN32
2780# undef lstat
2781# define lstat(a,b) _stati64 (a,b)
2782# endif
2783
2784#define DEF_STAT_INTERVAL 5.0074891
2785#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2786#define MIN_STAT_INTERVAL 0.1074891
2787
2788static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2789
2790#if EV_USE_INOTIFY
2791# define EV_INOTIFY_BUFSIZE 8192
2792
2793static void noinline
2794infy_add (EV_P_ ev_stat *w)
1162{ 2795{
1163 if (ev_is_active (w)) 2796 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);
2797
2798 if (w->wd < 0)
2799 {
2800 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2801 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2802
2803 /* monitor some parent directory for speedup hints */
2804 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2805 /* but an efficiency issue only */
2806 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2807 {
2808 char path [4096];
2809 strcpy (path, w->path);
2810
2811 do
2812 {
2813 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2814 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2815
2816 char *pend = strrchr (path, '/');
2817
2818 if (!pend || pend == path)
2819 break;
2820
2821 *pend = 0;
2822 w->wd = inotify_add_watch (fs_fd, path, mask);
2823 }
2824 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2825 }
2826 }
2827
2828 if (w->wd >= 0)
2829 {
2830 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2831
2832 /* now local changes will be tracked by inotify, but remote changes won't */
2833 /* unless the filesystem it known to be local, we therefore still poll */
2834 /* also do poll on <2.6.25, but with normal frequency */
2835 struct statfs sfs;
2836
2837 if (fs_2625 && !statfs (w->path, &sfs))
2838 if (sfs.f_type == 0x1373 /* devfs */
2839 || sfs.f_type == 0xEF53 /* ext2/3 */
2840 || sfs.f_type == 0x3153464a /* jfs */
2841 || sfs.f_type == 0x52654973 /* reiser3 */
2842 || sfs.f_type == 0x01021994 /* tempfs */
2843 || sfs.f_type == 0x58465342 /* xfs */)
2844 return;
2845
2846 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2847 ev_timer_again (EV_A_ &w->timer);
2848 }
2849}
2850
2851static void noinline
2852infy_del (EV_P_ ev_stat *w)
2853{
2854 int slot;
2855 int wd = w->wd;
2856
2857 if (wd < 0)
1164 return; 2858 return;
1165 2859
2860 w->wd = -2;
2861 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2862 wlist_del (&fs_hash [slot].head, (WL)w);
2863
2864 /* remove this watcher, if others are watching it, they will rearm */
2865 inotify_rm_watch (fs_fd, wd);
2866}
2867
2868static void noinline
2869infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2870{
2871 if (slot < 0)
2872 /* overflow, need to check for all hash slots */
2873 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2874 infy_wd (EV_A_ slot, wd, ev);
2875 else
2876 {
2877 WL w_;
2878
2879 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2880 {
2881 ev_stat *w = (ev_stat *)w_;
2882 w_ = w_->next; /* lets us remove this watcher and all before it */
2883
2884 if (w->wd == wd || wd == -1)
2885 {
2886 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2887 {
2888 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2889 w->wd = -1;
2890 infy_add (EV_A_ w); /* re-add, no matter what */
2891 }
2892
2893 stat_timer_cb (EV_A_ &w->timer, 0);
2894 }
2895 }
2896 }
2897}
2898
2899static void
2900infy_cb (EV_P_ ev_io *w, int revents)
2901{
2902 char buf [EV_INOTIFY_BUFSIZE];
2903 struct inotify_event *ev = (struct inotify_event *)buf;
2904 int ofs;
2905 int len = read (fs_fd, buf, sizeof (buf));
2906
2907 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2908 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2909}
2910
2911inline_size void
2912check_2625 (EV_P)
2913{
2914 /* kernels < 2.6.25 are borked
2915 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2916 */
2917 struct utsname buf;
2918 int major, minor, micro;
2919
2920 if (uname (&buf))
2921 return;
2922
2923 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2924 return;
2925
2926 if (major < 2
2927 || (major == 2 && minor < 6)
2928 || (major == 2 && minor == 6 && micro < 25))
2929 return;
2930
2931 fs_2625 = 1;
2932}
2933
2934inline_size void
2935infy_init (EV_P)
2936{
2937 if (fs_fd != -2)
2938 return;
2939
2940 fs_fd = -1;
2941
2942 check_2625 (EV_A);
2943
2944 fs_fd = inotify_init ();
2945
2946 if (fs_fd >= 0)
2947 {
2948 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2949 ev_set_priority (&fs_w, EV_MAXPRI);
2950 ev_io_start (EV_A_ &fs_w);
2951 }
2952}
2953
2954inline_size void
2955infy_fork (EV_P)
2956{
2957 int slot;
2958
2959 if (fs_fd < 0)
2960 return;
2961
2962 close (fs_fd);
2963 fs_fd = inotify_init ();
2964
2965 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2966 {
2967 WL w_ = fs_hash [slot].head;
2968 fs_hash [slot].head = 0;
2969
2970 while (w_)
2971 {
2972 ev_stat *w = (ev_stat *)w_;
2973 w_ = w_->next; /* lets us add this watcher */
2974
2975 w->wd = -1;
2976
2977 if (fs_fd >= 0)
2978 infy_add (EV_A_ w); /* re-add, no matter what */
2979 else
2980 ev_timer_again (EV_A_ &w->timer);
2981 }
2982 }
2983}
2984
2985#endif
2986
2987#ifdef _WIN32
2988# define EV_LSTAT(p,b) _stati64 (p, b)
2989#else
2990# define EV_LSTAT(p,b) lstat (p, b)
2991#endif
2992
2993void
2994ev_stat_stat (EV_P_ ev_stat *w)
2995{
2996 if (lstat (w->path, &w->attr) < 0)
2997 w->attr.st_nlink = 0;
2998 else if (!w->attr.st_nlink)
2999 w->attr.st_nlink = 1;
3000}
3001
3002static void noinline
3003stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3004{
3005 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3006
3007 /* we copy this here each the time so that */
3008 /* prev has the old value when the callback gets invoked */
3009 w->prev = w->attr;
3010 ev_stat_stat (EV_A_ w);
3011
3012 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3013 if (
3014 w->prev.st_dev != w->attr.st_dev
3015 || w->prev.st_ino != w->attr.st_ino
3016 || w->prev.st_mode != w->attr.st_mode
3017 || w->prev.st_nlink != w->attr.st_nlink
3018 || w->prev.st_uid != w->attr.st_uid
3019 || w->prev.st_gid != w->attr.st_gid
3020 || w->prev.st_rdev != w->attr.st_rdev
3021 || w->prev.st_size != w->attr.st_size
3022 || w->prev.st_atime != w->attr.st_atime
3023 || w->prev.st_mtime != w->attr.st_mtime
3024 || w->prev.st_ctime != w->attr.st_ctime
3025 ) {
3026 #if EV_USE_INOTIFY
3027 if (fs_fd >= 0)
3028 {
3029 infy_del (EV_A_ w);
3030 infy_add (EV_A_ w);
3031 ev_stat_stat (EV_A_ w); /* avoid race... */
3032 }
3033 #endif
3034
3035 ev_feed_event (EV_A_ w, EV_STAT);
3036 }
3037}
3038
3039void
3040ev_stat_start (EV_P_ ev_stat *w)
3041{
3042 if (expect_false (ev_is_active (w)))
3043 return;
3044
3045 ev_stat_stat (EV_A_ w);
3046
3047 if (w->interval < MIN_STAT_INTERVAL && w->interval)
3048 w->interval = MIN_STAT_INTERVAL;
3049
3050 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
3051 ev_set_priority (&w->timer, ev_priority (w));
3052
3053#if EV_USE_INOTIFY
3054 infy_init (EV_A);
3055
3056 if (fs_fd >= 0)
3057 infy_add (EV_A_ w);
3058 else
3059#endif
3060 ev_timer_again (EV_A_ &w->timer);
3061
3062 ev_start (EV_A_ (W)w, 1);
3063
3064 EV_FREQUENT_CHECK;
3065}
3066
3067void
3068ev_stat_stop (EV_P_ ev_stat *w)
3069{
3070 clear_pending (EV_A_ (W)w);
3071 if (expect_false (!ev_is_active (w)))
3072 return;
3073
3074 EV_FREQUENT_CHECK;
3075
3076#if EV_USE_INOTIFY
3077 infy_del (EV_A_ w);
3078#endif
3079 ev_timer_stop (EV_A_ &w->timer);
3080
3081 ev_stop (EV_A_ (W)w);
3082
3083 EV_FREQUENT_CHECK;
3084}
3085#endif
3086
3087#if EV_IDLE_ENABLE
3088void
3089ev_idle_start (EV_P_ ev_idle *w)
3090{
3091 if (expect_false (ev_is_active (w)))
3092 return;
3093
3094 pri_adjust (EV_A_ (W)w);
3095
3096 EV_FREQUENT_CHECK;
3097
3098 {
3099 int active = ++idlecnt [ABSPRI (w)];
3100
3101 ++idleall;
3102 ev_start (EV_A_ (W)w, active);
3103
3104 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
3105 idles [ABSPRI (w)][active - 1] = w;
3106 }
3107
3108 EV_FREQUENT_CHECK;
3109}
3110
3111void
3112ev_idle_stop (EV_P_ ev_idle *w)
3113{
3114 clear_pending (EV_A_ (W)w);
3115 if (expect_false (!ev_is_active (w)))
3116 return;
3117
3118 EV_FREQUENT_CHECK;
3119
3120 {
3121 int active = ev_active (w);
3122
3123 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
3124 ev_active (idles [ABSPRI (w)][active - 1]) = active;
3125
3126 ev_stop (EV_A_ (W)w);
3127 --idleall;
3128 }
3129
3130 EV_FREQUENT_CHECK;
3131}
3132#endif
3133
3134void
3135ev_prepare_start (EV_P_ ev_prepare *w)
3136{
3137 if (expect_false (ev_is_active (w)))
3138 return;
3139
3140 EV_FREQUENT_CHECK;
3141
1166 ev_start (EV_A_ (W)w, ++preparecnt); 3142 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, ); 3143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1168 prepares [preparecnt - 1] = w; 3144 prepares [preparecnt - 1] = w;
1169}
1170 3145
3146 EV_FREQUENT_CHECK;
3147}
3148
1171void 3149void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w) 3150ev_prepare_stop (EV_P_ ev_prepare *w)
1173{ 3151{
1174 ev_clear_pending (EV_A_ (W)w); 3152 clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w)) 3153 if (expect_false (!ev_is_active (w)))
1176 return; 3154 return;
1177 3155
3156 EV_FREQUENT_CHECK;
3157
3158 {
3159 int active = ev_active (w);
3160
1178 prepares [w->active - 1] = prepares [--preparecnt]; 3161 prepares [active - 1] = prepares [--preparecnt];
3162 ev_active (prepares [active - 1]) = active;
3163 }
3164
1179 ev_stop (EV_A_ (W)w); 3165 ev_stop (EV_A_ (W)w);
1180}
1181 3166
3167 EV_FREQUENT_CHECK;
3168}
3169
1182void 3170void
1183ev_check_start (EV_P_ struct ev_check *w) 3171ev_check_start (EV_P_ ev_check *w)
1184{ 3172{
1185 if (ev_is_active (w)) 3173 if (expect_false (ev_is_active (w)))
1186 return; 3174 return;
1187 3175
3176 EV_FREQUENT_CHECK;
3177
1188 ev_start (EV_A_ (W)w, ++checkcnt); 3178 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, ); 3179 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1190 checks [checkcnt - 1] = w; 3180 checks [checkcnt - 1] = w;
1191}
1192 3181
3182 EV_FREQUENT_CHECK;
3183}
3184
1193void 3185void
1194ev_check_stop (EV_P_ struct ev_check *w) 3186ev_check_stop (EV_P_ ev_check *w)
1195{ 3187{
1196 ev_clear_pending (EV_A_ (W)w); 3188 clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w)) 3189 if (expect_false (!ev_is_active (w)))
1198 return; 3190 return;
1199 3191
3192 EV_FREQUENT_CHECK;
3193
3194 {
3195 int active = ev_active (w);
3196
1200 checks [w->active - 1] = checks [--checkcnt]; 3197 checks [active - 1] = checks [--checkcnt];
3198 ev_active (checks [active - 1]) = active;
3199 }
3200
1201 ev_stop (EV_A_ (W)w); 3201 ev_stop (EV_A_ (W)w);
1202}
1203 3202
1204void 3203 EV_FREQUENT_CHECK;
1205ev_child_start (EV_P_ struct ev_child *w) 3204}
3205
3206#if EV_EMBED_ENABLE
3207void noinline
3208ev_embed_sweep (EV_P_ ev_embed *w)
1206{ 3209{
3210 ev_loop (w->other, EVLOOP_NONBLOCK);
3211}
3212
3213static void
3214embed_io_cb (EV_P_ ev_io *io, int revents)
3215{
3216 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3217
1207 if (ev_is_active (w)) 3218 if (ev_cb (w))
3219 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3220 else
3221 ev_loop (w->other, EVLOOP_NONBLOCK);
3222}
3223
3224static void
3225embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3226{
3227 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3228
3229 {
3230 struct ev_loop *loop = w->other;
3231
3232 while (fdchangecnt)
3233 {
3234 fd_reify (EV_A);
3235 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3236 }
3237 }
3238}
3239
3240static void
3241embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3242{
3243 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3244
3245 ev_embed_stop (EV_A_ w);
3246
3247 {
3248 struct ev_loop *loop = w->other;
3249
3250 ev_loop_fork (EV_A);
3251 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3252 }
3253
3254 ev_embed_start (EV_A_ w);
3255}
3256
3257#if 0
3258static void
3259embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3260{
3261 ev_idle_stop (EV_A_ idle);
3262}
3263#endif
3264
3265void
3266ev_embed_start (EV_P_ ev_embed *w)
3267{
3268 if (expect_false (ev_is_active (w)))
1208 return; 3269 return;
1209 3270
3271 {
3272 struct ev_loop *loop = w->other;
3273 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3274 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3275 }
3276
3277 EV_FREQUENT_CHECK;
3278
3279 ev_set_priority (&w->io, ev_priority (w));
3280 ev_io_start (EV_A_ &w->io);
3281
3282 ev_prepare_init (&w->prepare, embed_prepare_cb);
3283 ev_set_priority (&w->prepare, EV_MINPRI);
3284 ev_prepare_start (EV_A_ &w->prepare);
3285
3286 ev_fork_init (&w->fork, embed_fork_cb);
3287 ev_fork_start (EV_A_ &w->fork);
3288
3289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3290
1210 ev_start (EV_A_ (W)w, 1); 3291 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212}
1213 3292
3293 EV_FREQUENT_CHECK;
3294}
3295
1214void 3296void
1215ev_child_stop (EV_P_ struct ev_child *w) 3297ev_embed_stop (EV_P_ ev_embed *w)
1216{ 3298{
1217 ev_clear_pending (EV_A_ (W)w); 3299 clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 3300 if (expect_false (!ev_is_active (w)))
1219 return; 3301 return;
1220 3302
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 3303 EV_FREQUENT_CHECK;
3304
3305 ev_io_stop (EV_A_ &w->io);
3306 ev_prepare_stop (EV_A_ &w->prepare);
3307 ev_fork_stop (EV_A_ &w->fork);
3308
3309 EV_FREQUENT_CHECK;
3310}
3311#endif
3312
3313#if EV_FORK_ENABLE
3314void
3315ev_fork_start (EV_P_ ev_fork *w)
3316{
3317 if (expect_false (ev_is_active (w)))
3318 return;
3319
3320 EV_FREQUENT_CHECK;
3321
3322 ev_start (EV_A_ (W)w, ++forkcnt);
3323 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
3324 forks [forkcnt - 1] = w;
3325
3326 EV_FREQUENT_CHECK;
3327}
3328
3329void
3330ev_fork_stop (EV_P_ ev_fork *w)
3331{
3332 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w)))
3334 return;
3335
3336 EV_FREQUENT_CHECK;
3337
3338 {
3339 int active = ev_active (w);
3340
3341 forks [active - 1] = forks [--forkcnt];
3342 ev_active (forks [active - 1]) = active;
3343 }
3344
1222 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
1223} 3348}
3349#endif
3350
3351#if EV_ASYNC_ENABLE
3352void
3353ev_async_start (EV_P_ ev_async *w)
3354{
3355 if (expect_false (ev_is_active (w)))
3356 return;
3357
3358 evpipe_init (EV_A);
3359
3360 EV_FREQUENT_CHECK;
3361
3362 ev_start (EV_A_ (W)w, ++asynccnt);
3363 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3364 asyncs [asynccnt - 1] = w;
3365
3366 EV_FREQUENT_CHECK;
3367}
3368
3369void
3370ev_async_stop (EV_P_ ev_async *w)
3371{
3372 clear_pending (EV_A_ (W)w);
3373 if (expect_false (!ev_is_active (w)))
3374 return;
3375
3376 EV_FREQUENT_CHECK;
3377
3378 {
3379 int active = ev_active (w);
3380
3381 asyncs [active - 1] = asyncs [--asynccnt];
3382 ev_active (asyncs [active - 1]) = active;
3383 }
3384
3385 ev_stop (EV_A_ (W)w);
3386
3387 EV_FREQUENT_CHECK;
3388}
3389
3390void
3391ev_async_send (EV_P_ ev_async *w)
3392{
3393 w->sent = 1;
3394 evpipe_write (EV_A_ &gotasync);
3395}
3396#endif
1224 3397
1225/*****************************************************************************/ 3398/*****************************************************************************/
1226 3399
1227struct ev_once 3400struct ev_once
1228{ 3401{
1229 struct ev_io io; 3402 ev_io io;
1230 struct ev_timer to; 3403 ev_timer to;
1231 void (*cb)(int revents, void *arg); 3404 void (*cb)(int revents, void *arg);
1232 void *arg; 3405 void *arg;
1233}; 3406};
1234 3407
1235static void 3408static void
1236once_cb (EV_P_ struct ev_once *once, int revents) 3409once_cb (EV_P_ struct ev_once *once, int revents)
1237{ 3410{
1238 void (*cb)(int revents, void *arg) = once->cb; 3411 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 3412 void *arg = once->arg;
1240 3413
1241 ev_io_stop (EV_A_ &once->io); 3414 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 3415 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 3416 ev_free (once);
1244 3417
1245 cb (revents, arg); 3418 cb (revents, arg);
1246} 3419}
1247 3420
1248static void 3421static void
1249once_cb_io (EV_P_ struct ev_io *w, int revents) 3422once_cb_io (EV_P_ ev_io *w, int revents)
1250{ 3423{
1251 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3424 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3425
3426 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1252} 3427}
1253 3428
1254static void 3429static void
1255once_cb_to (EV_P_ struct ev_timer *w, int revents) 3430once_cb_to (EV_P_ ev_timer *w, int revents)
1256{ 3431{
1257 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3432 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3433
3434 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1258} 3435}
1259 3436
1260void 3437void
1261ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3438ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262{ 3439{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 3440 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 3441
1265 if (!once) 3442 if (expect_false (!once))
3443 {
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3444 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 3445 return;
1268 { 3446 }
3447
1269 once->cb = cb; 3448 once->cb = cb;
1270 once->arg = arg; 3449 once->arg = arg;
1271 3450
1272 ev_watcher_init (&once->io, once_cb_io); 3451 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 3452 if (fd >= 0)
3453 {
3454 ev_io_set (&once->io, fd, events);
3455 ev_io_start (EV_A_ &once->io);
3456 }
3457
3458 ev_init (&once->to, once_cb_to);
3459 if (timeout >= 0.)
3460 {
3461 ev_timer_set (&once->to, timeout, 0.);
3462 ev_timer_start (EV_A_ &once->to);
3463 }
3464}
3465
3466/*****************************************************************************/
3467
3468#if EV_WALK_ENABLE
3469void
3470ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3471{
3472 int i, j;
3473 ev_watcher_list *wl, *wn;
3474
3475 if (types & (EV_IO | EV_EMBED))
3476 for (i = 0; i < anfdmax; ++i)
3477 for (wl = anfds [i].head; wl; )
1274 { 3478 {
1275 ev_io_set (&once->io, fd, events); 3479 wn = wl->next;
1276 ev_io_start (EV_A_ &once->io); 3480
3481#if EV_EMBED_ENABLE
3482 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3483 {
3484 if (types & EV_EMBED)
3485 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3486 }
3487 else
3488#endif
3489#if EV_USE_INOTIFY
3490 if (ev_cb ((ev_io *)wl) == infy_cb)
3491 ;
3492 else
3493#endif
3494 if ((ev_io *)wl != &pipe_w)
3495 if (types & EV_IO)
3496 cb (EV_A_ EV_IO, wl);
3497
3498 wl = wn;
1277 } 3499 }
1278 3500
1279 ev_watcher_init (&once->to, once_cb_to); 3501 if (types & (EV_TIMER | EV_STAT))
1280 if (timeout >= 0.) 3502 for (i = timercnt + HEAP0; i-- > HEAP0; )
3503#if EV_STAT_ENABLE
3504 /*TODO: timer is not always active*/
3505 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
1281 { 3506 {
1282 ev_timer_set (&once->to, timeout, 0.); 3507 if (types & EV_STAT)
1283 ev_timer_start (EV_A_ &once->to); 3508 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
1284 } 3509 }
1285 } 3510 else
1286} 3511#endif
3512 if (types & EV_TIMER)
3513 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
1287 3514
1288/*****************************************************************************/ 3515#if EV_PERIODIC_ENABLE
3516 if (types & EV_PERIODIC)
3517 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3518 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3519#endif
1289 3520
1290#if 0 3521#if EV_IDLE_ENABLE
3522 if (types & EV_IDLE)
3523 for (j = NUMPRI; i--; )
3524 for (i = idlecnt [j]; i--; )
3525 cb (EV_A_ EV_IDLE, idles [j][i]);
3526#endif
1291 3527
1292struct ev_io wio; 3528#if EV_FORK_ENABLE
3529 if (types & EV_FORK)
3530 for (i = forkcnt; i--; )
3531 if (ev_cb (forks [i]) != embed_fork_cb)
3532 cb (EV_A_ EV_FORK, forks [i]);
3533#endif
1293 3534
1294static void 3535#if EV_ASYNC_ENABLE
1295sin_cb (struct ev_io *w, int revents) 3536 if (types & EV_ASYNC)
1296{ 3537 for (i = asynccnt; i--; )
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); 3538 cb (EV_A_ EV_ASYNC, asyncs [i]);
1298} 3539#endif
1299 3540
1300static void 3541 if (types & EV_PREPARE)
1301ocb (struct ev_timer *w, int revents) 3542 for (i = preparecnt; i--; )
1302{ 3543#if EV_EMBED_ENABLE
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); 3544 if (ev_cb (prepares [i]) != embed_prepare_cb)
1304 ev_timer_stop (w); 3545#endif
1305 ev_timer_start (w); 3546 cb (EV_A_ EV_PREPARE, prepares [i]);
1306}
1307 3547
1308static void 3548 if (types & EV_CHECK)
1309scb (struct ev_signal *w, int revents) 3549 for (i = checkcnt; i--; )
1310{ 3550 cb (EV_A_ EV_CHECK, checks [i]);
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315 3551
1316static void 3552 if (types & EV_SIGNAL)
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i) 3553 for (i = 0; i < signalmax; ++i)
1335 { 3554 for (wl = signals [i].head; wl; )
1336 struct ev_timer *w = t + i; 3555 {
1337 ev_watcher_init (w, ocb, i); 3556 wn = wl->next;
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); 3557 cb (EV_A_ EV_SIGNAL, wl);
1339 ev_timer_start (w); 3558 wl = wn;
1340 if (drand48 () < 0.5) 3559 }
1341 ev_timer_stop (w);
1342 }
1343#endif
1344 3560
1345 struct ev_timer t1; 3561 if (types & EV_CHILD)
1346 ev_timer_init (&t1, ocb, 5, 10); 3562 for (i = EV_PID_HASHSIZE; i--; )
1347 ev_timer_start (&t1); 3563 for (wl = childs [i]; wl; )
1348 3564 {
1349 struct ev_signal sig; 3565 wn = wl->next;
1350 ev_signal_init (&sig, scb, SIGQUIT); 3566 cb (EV_A_ EV_CHILD, wl);
1351 ev_signal_start (&sig); 3567 wl = wn;
1352 3568 }
1353 struct ev_check cw; 3569/* EV_STAT 0x00001000 /* stat data changed */
1354 ev_check_init (&cw, gcb); 3570/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364} 3571}
1365
1366#endif 3572#endif
1367 3573
3574#if EV_MULTIPLICITY
3575 #include "ev_wrap.h"
3576#endif
1368 3577
3578#ifdef __cplusplus
3579}
3580#endif
1369 3581
1370

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