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Comparing libev/ev.c (file contents):
Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC vs.
Revision 1.297 by root, Fri Jul 10 00:36:21 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 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
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
56# endif 87# endif
57# endif 88# endif
58 89
59# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 125# else
95# define EV_USE_PORT 0 126# define EV_USE_PORT 0
96# endif 127# endif
97# endif 128# endif
98 129
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_EVENTFD
139# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif
144# endif
145
99#endif 146#endif
100 147
101#include <math.h> 148#include <math.h>
102#include <stdlib.h> 149#include <stdlib.h>
103#include <fcntl.h> 150#include <fcntl.h>
… …
109#include <errno.h> 156#include <errno.h>
110#include <sys/types.h> 157#include <sys/types.h>
111#include <time.h> 158#include <time.h>
112 159
113#include <signal.h> 160#include <signal.h>
161
162#ifdef EV_H
163# include EV_H
164#else
165# include "ev.h"
166#endif
114 167
115#ifndef _WIN32 168#ifndef _WIN32
116# include <sys/time.h> 169# include <sys/time.h>
117# include <sys/wait.h> 170# include <sys/wait.h>
118# include <unistd.h> 171# include <unistd.h>
119#else 172#else
173# include <io.h>
120# define WIN32_LEAN_AND_MEAN 174# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 175# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 176# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 177# define EV_SELECT_IS_WINSOCKET 1
124# endif 178# endif
125#endif 179#endif
126 180
127/**/ 181/* this block tries to deduce configuration from header-defined symbols and defaults */
182
183#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1
186# else
187# define EV_USE_CLOCK_SYSCALL 0
188# endif
189#endif
128 190
129#ifndef EV_USE_MONOTONIC 191#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1
194# else
130# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
196# endif
131#endif 197#endif
132 198
133#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif
202
203#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1
206# else
207# define EV_USE_NANOSLEEP 0
208# endif
135#endif 209#endif
136 210
137#ifndef EV_USE_SELECT 211#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 212# define EV_USE_SELECT 1
139#endif 213#endif
… …
145# define EV_USE_POLL 1 219# define EV_USE_POLL 1
146# endif 220# endif
147#endif 221#endif
148 222
149#ifndef EV_USE_EPOLL 223#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1
226# else
150# define EV_USE_EPOLL 0 227# define EV_USE_EPOLL 0
228# endif
151#endif 229#endif
152 230
153#ifndef EV_USE_KQUEUE 231#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 232# define EV_USE_KQUEUE 0
155#endif 233#endif
156 234
157#ifndef EV_USE_PORT 235#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 236# define EV_USE_PORT 0
159#endif 237#endif
160 238
161/**/ 239#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1
242# else
243# define EV_USE_INOTIFY 0
244# endif
245#endif
246
247#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif
254
255#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif
262
263#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1
266# else
267# define EV_USE_EVENTFD 0
268# endif
269#endif
270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
281#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL
283#endif
284
285#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
301#endif
302
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 304
163#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
166#endif 308#endif
… …
168#ifndef CLOCK_REALTIME 310#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 311# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 312# define EV_USE_REALTIME 0
171#endif 313#endif
172 314
315#if !EV_STAT_ENABLE
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318#endif
319
320#if !EV_USE_NANOSLEEP
321# ifndef _WIN32
322# include <sys/select.h>
323# endif
324#endif
325
326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
329# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334# endif
335#endif
336
173#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 338# include <winsock.h>
175#endif 339#endif
176 340
341#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h>
344# ifdef __cplusplus
345extern "C" {
346# endif
347int eventfd (unsigned int initval, int flags);
348# ifdef __cplusplus
349}
350# endif
351#endif
352
177/**/ 353/**/
354
355#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
357#else
358# define EV_FREQUENT_CHECK do { } while (0)
359#endif
360
361/*
362 * This is used to avoid floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 370
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 374
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 375#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 376# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 377# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 378#else
201# define expect(expr,value) (expr) 379# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_size static
204# define noinline 380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif
205#endif 384#endif
206 385
207#define expect_false(expr) expect ((expr) != 0, 0) 386#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 387#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline
209 389
390#if EV_MINIMAL
391# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif
395
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397
398#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0)
400#else
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif
212 403
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 404#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 405#define EMPTY2(a,b) /* used to suppress some warnings */
215 406
216typedef ev_watcher *W; 407typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 408typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 409typedef ev_watcher_time *WT;
219 410
411#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at
413
414#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif
419
420#if EV_USE_MONOTONIC
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif
221 423
222#ifdef _WIN32 424#ifdef _WIN32
223# include "ev_win32.c" 425# include "ev_win32.c"
224#endif 426#endif
225 427
… …
232{ 434{
233 syserr_cb = cb; 435 syserr_cb = cb;
234} 436}
235 437
236static void noinline 438static void noinline
237syserr (const char *msg) 439ev_syserr (const char *msg)
238{ 440{
239 if (!msg) 441 if (!msg)
240 msg = "(libev) system error"; 442 msg = "(libev) system error";
241 443
242 if (syserr_cb) 444 if (syserr_cb)
… …
246 perror (msg); 448 perror (msg);
247 abort (); 449 abort ();
248 } 450 }
249} 451}
250 452
453static void *
454ev_realloc_emul (void *ptr, long size)
455{
456 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and
458 * the single unix specification, so work around them here.
459 */
460
461 if (size)
462 return realloc (ptr, size);
463
464 free (ptr);
465 return 0;
466}
467
251static void *(*alloc)(void *ptr, long size); 468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
252 469
253void 470void
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 471ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 472{
256 alloc = cb; 473 alloc = cb;
257} 474}
258 475
259static void * 476inline_speed void *
260ev_realloc (void *ptr, long size) 477ev_realloc (void *ptr, long size)
261{ 478{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 479 ptr = alloc (ptr, size);
263 480
264 if (!ptr && size) 481 if (!ptr && size)
265 { 482 {
266 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
267 abort (); 484 abort ();
… …
273#define ev_malloc(size) ev_realloc (0, (size)) 490#define ev_malloc(size) ev_realloc (0, (size))
274#define ev_free(ptr) ev_realloc ((ptr), 0) 491#define ev_free(ptr) ev_realloc ((ptr), 0)
275 492
276/*****************************************************************************/ 493/*****************************************************************************/
277 494
495/* file descriptor info structure */
278typedef struct 496typedef struct
279{ 497{
280 WL head; 498 WL head;
281 unsigned char events; 499 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
282 unsigned char reify; 502 unsigned char unused;
503#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif
283#if EV_SELECT_IS_WINSOCKET 506#if EV_SELECT_IS_WINSOCKET
284 SOCKET handle; 507 SOCKET handle;
285#endif 508#endif
286} ANFD; 509} ANFD;
287 510
511/* stores the pending event set for a given watcher */
288typedef struct 512typedef struct
289{ 513{
290 W w; 514 W w;
291 int events; 515 int events; /* the pending event set for the given watcher */
292} ANPENDING; 516} ANPENDING;
517
518#if EV_USE_INOTIFY
519/* hash table entry per inotify-id */
520typedef struct
521{
522 WL head;
523} ANFS;
524#endif
525
526/* Heap Entry */
527#if EV_HEAP_CACHE_AT
528 /* a heap element */
529 typedef struct {
530 ev_tstamp at;
531 WT w;
532 } ANHE;
533
534 #define ANHE_w(he) (he).w /* access watcher, read-write */
535 #define ANHE_at(he) (he).at /* access cached at, read-only */
536 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
537#else
538 /* a heap element */
539 typedef WT ANHE;
540
541 #define ANHE_w(he) (he)
542 #define ANHE_at(he) (he)->at
543 #define ANHE_at_cache(he)
544#endif
293 545
294#if EV_MULTIPLICITY 546#if EV_MULTIPLICITY
295 547
296 struct ev_loop 548 struct ev_loop
297 { 549 {
… …
315 567
316 static int ev_default_loop_ptr; 568 static int ev_default_loop_ptr;
317 569
318#endif 570#endif
319 571
572#if EV_MINIMAL < 2
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif
581
320/*****************************************************************************/ 582/*****************************************************************************/
321 583
584#ifndef EV_HAVE_EV_TIME
322ev_tstamp 585ev_tstamp
323ev_time (void) 586ev_time (void)
324{ 587{
325#if EV_USE_REALTIME 588#if EV_USE_REALTIME
589 if (expect_true (have_realtime))
590 {
326 struct timespec ts; 591 struct timespec ts;
327 clock_gettime (CLOCK_REALTIME, &ts); 592 clock_gettime (CLOCK_REALTIME, &ts);
328 return ts.tv_sec + ts.tv_nsec * 1e-9; 593 return ts.tv_sec + ts.tv_nsec * 1e-9;
329#else 594 }
595#endif
596
330 struct timeval tv; 597 struct timeval tv;
331 gettimeofday (&tv, 0); 598 gettimeofday (&tv, 0);
332 return tv.tv_sec + tv.tv_usec * 1e-6; 599 return tv.tv_sec + tv.tv_usec * 1e-6;
333#endif
334} 600}
601#endif
335 602
336ev_tstamp inline_size 603inline_size ev_tstamp
337get_clock (void) 604get_clock (void)
338{ 605{
339#if EV_USE_MONOTONIC 606#if EV_USE_MONOTONIC
340 if (expect_true (have_monotonic)) 607 if (expect_true (have_monotonic))
341 { 608 {
… …
354{ 621{
355 return ev_rt_now; 622 return ev_rt_now;
356} 623}
357#endif 624#endif
358 625
359#define array_roundsize(type,n) (((n) | 4) & ~3) 626void
627ev_sleep (ev_tstamp delay)
628{
629 if (delay > 0.)
630 {
631#if EV_USE_NANOSLEEP
632 struct timespec ts;
633
634 ts.tv_sec = (time_t)delay;
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0);
638#elif defined(_WIN32)
639 Sleep ((unsigned long)(delay * 1e3));
640#else
641 struct timeval tv;
642
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */
649 select (0, 0, 0, 0, &tv);
650#endif
651 }
652}
653
654/*****************************************************************************/
655
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657
658/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */
660inline_size int
661array_nextsize (int elem, int cur, int cnt)
662{
663 int ncur = cur + 1;
664
665 do
666 ncur <<= 1;
667 while (cnt > ncur);
668
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 {
672 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4;
675 ncur /= elem;
676 }
677
678 return ncur;
679}
680
681static noinline void *
682array_realloc (int elem, void *base, int *cur, int cnt)
683{
684 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur);
686}
687
688#define array_init_zero(base,count) \
689 memset ((void *)(base), 0, sizeof (*(base)) * (count))
360 690
361#define array_needsize(type,base,cur,cnt,init) \ 691#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 692 if (expect_false ((cnt) > (cur))) \
363 { \ 693 { \
364 int newcnt = cur; \ 694 int ocur_ = (cur); \
365 do \ 695 (base) = (type *)array_realloc \
366 { \ 696 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 697 init ((base) + (ocur_), (cur) - ocur_); \
368 } \
369 while ((cnt) > newcnt); \
370 \
371 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372 init (base + cur, newcnt - cur); \
373 cur = newcnt; \
374 } 698 }
375 699
700#if 0
376#define array_slim(type,stem) \ 701#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 702 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 703 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 704 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 705 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 706 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 707 }
708#endif
383 709
384#define array_free(stem, idx) \ 710#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 711 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
386 712
387/*****************************************************************************/ 713/*****************************************************************************/
714
715/* dummy callback for pending events */
716static void noinline
717pendingcb (EV_P_ ev_prepare *w, int revents)
718{
719}
388 720
389void noinline 721void noinline
390ev_feed_event (EV_P_ void *w, int revents) 722ev_feed_event (EV_P_ void *w, int revents)
391{ 723{
392 W w_ = (W)w; 724 W w_ = (W)w;
725 int pri = ABSPRI (w_);
393 726
394 if (expect_false (w_->pending)) 727 if (expect_false (w_->pending))
728 pendings [pri][w_->pending - 1].events |= revents;
729 else
395 { 730 {
731 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
733 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 734 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 735 }
399
400 w_->pending = ++pendingcnt [ABSPRI (w_)];
401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404} 736}
405 737
406void inline_size 738inline_speed void
739feed_reverse (EV_P_ W w)
740{
741 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
742 rfeeds [rfeedcnt++] = w;
743}
744
745inline_size void
746feed_reverse_done (EV_P_ int revents)
747{
748 do
749 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
750 while (rfeedcnt);
751}
752
753inline_speed void
407queue_events (EV_P_ W *events, int eventcnt, int type) 754queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 755{
409 int i; 756 int i;
410 757
411 for (i = 0; i < eventcnt; ++i) 758 for (i = 0; i < eventcnt; ++i)
412 ev_feed_event (EV_A_ events [i], type); 759 ev_feed_event (EV_A_ events [i], type);
413} 760}
414 761
415/*****************************************************************************/ 762/*****************************************************************************/
416 763
417void inline_size 764inline_speed void
418anfds_init (ANFD *base, int count)
419{
420 while (count--)
421 {
422 base->head = 0;
423 base->events = EV_NONE;
424 base->reify = 0;
425
426 ++base;
427 }
428}
429
430void inline_speed
431fd_event (EV_P_ int fd, int revents) 765fd_event (EV_P_ int fd, int revents)
432{ 766{
433 ANFD *anfd = anfds + fd; 767 ANFD *anfd = anfds + fd;
434 ev_io *w; 768 ev_io *w;
435 769
… …
443} 777}
444 778
445void 779void
446ev_feed_fd_event (EV_P_ int fd, int revents) 780ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 781{
782 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 783 fd_event (EV_A_ fd, revents);
449} 784}
450 785
451void inline_size 786/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */
788inline_size void
452fd_reify (EV_P) 789fd_reify (EV_P)
453{ 790{
454 int i; 791 int i;
455 792
456 for (i = 0; i < fdchangecnt; ++i) 793 for (i = 0; i < fdchangecnt; ++i)
457 { 794 {
458 int fd = fdchanges [i]; 795 int fd = fdchanges [i];
459 ANFD *anfd = anfds + fd; 796 ANFD *anfd = anfds + fd;
460 ev_io *w; 797 ev_io *w;
461 798
462 int events = 0; 799 unsigned char events = 0;
463 800
464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465 events |= w->events; 802 events |= (unsigned char)w->events;
466 803
467#if EV_SELECT_IS_WINSOCKET 804#if EV_SELECT_IS_WINSOCKET
468 if (events) 805 if (events)
469 { 806 {
470 unsigned long argp; 807 unsigned long arg;
808 #ifdef EV_FD_TO_WIN32_HANDLE
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
810 #else
471 anfd->handle = _get_osfhandle (fd); 811 anfd->handle = _get_osfhandle (fd);
812 #endif
472 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
473 } 814 }
474#endif 815#endif
475 816
817 {
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
476 anfd->reify = 0; 821 anfd->reify = 0;
477
478 backend_modify (EV_A_ fd, anfd->events, events);
479 anfd->events = events; 822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events);
826 }
480 } 827 }
481 828
482 fdchangecnt = 0; 829 fdchangecnt = 0;
483} 830}
484 831
485void inline_size 832/* something about the given fd changed */
833inline_size void
486fd_change (EV_P_ int fd) 834fd_change (EV_P_ int fd, int flags)
487{ 835{
488 if (expect_false (anfds [fd].reify)) 836 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 837 anfds [fd].reify |= flags;
492 838
839 if (expect_true (!reify))
840 {
493 ++fdchangecnt; 841 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 842 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 843 fdchanges [fdchangecnt - 1] = fd;
844 }
496} 845}
497 846
498void inline_speed 847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void
499fd_kill (EV_P_ int fd) 849fd_kill (EV_P_ int fd)
500{ 850{
501 ev_io *w; 851 ev_io *w;
502 852
503 while ((w = (ev_io *)anfds [fd].head)) 853 while ((w = (ev_io *)anfds [fd].head))
… …
505 ev_io_stop (EV_A_ w); 855 ev_io_stop (EV_A_ w);
506 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
507 } 857 }
508} 858}
509 859
510int inline_size 860/* check whether the given fd is atcually valid, for error recovery */
861inline_size int
511fd_valid (int fd) 862fd_valid (int fd)
512{ 863{
513#ifdef _WIN32 864#ifdef _WIN32
514 return _get_osfhandle (fd) != -1; 865 return _get_osfhandle (fd) != -1;
515#else 866#else
… …
523{ 874{
524 int fd; 875 int fd;
525 876
526 for (fd = 0; fd < anfdmax; ++fd) 877 for (fd = 0; fd < anfdmax; ++fd)
527 if (anfds [fd].events) 878 if (anfds [fd].events)
528 if (!fd_valid (fd) == -1 && errno == EBADF) 879 if (!fd_valid (fd) && errno == EBADF)
529 fd_kill (EV_A_ fd); 880 fd_kill (EV_A_ fd);
530} 881}
531 882
532/* called on ENOMEM in select/poll to kill some fds and retry */ 883/* called on ENOMEM in select/poll to kill some fds and retry */
533static void noinline 884static void noinline
… …
547static void noinline 898static void noinline
548fd_rearm_all (EV_P) 899fd_rearm_all (EV_P)
549{ 900{
550 int fd; 901 int fd;
551 902
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 903 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 904 if (anfds [fd].events)
555 { 905 {
556 anfds [fd].events = 0; 906 anfds [fd].events = 0;
907 anfds [fd].emask = 0;
557 fd_change (EV_A_ fd); 908 fd_change (EV_A_ fd, EV__IOFDSET | 1);
558 } 909 }
559} 910}
560 911
561/*****************************************************************************/ 912/*****************************************************************************/
562 913
563void inline_speed 914/*
564upheap (WT *heap, int k) 915 * the heap functions want a real array index. array index 0 uis guaranteed to not
565{ 916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
566 WT w = heap [k]; 917 * the branching factor of the d-tree.
918 */
567 919
568 while (k && heap [k >> 1]->at > w->at) 920/*
569 { 921 * at the moment we allow libev the luxury of two heaps,
570 heap [k] = heap [k >> 1]; 922 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
571 ((W)heap [k])->active = k + 1; 923 * which is more cache-efficient.
572 k >>= 1; 924 * the difference is about 5% with 50000+ watchers.
573 } 925 */
926#if EV_USE_4HEAP
574 927
575 heap [k] = w; 928#define DHEAP 4
576 ((W)heap [k])->active = k + 1; 929#define HEAP0 (DHEAP - 1) /* index of first element in heap */
930#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
931#define UPHEAP_DONE(p,k) ((p) == (k))
577 932
578} 933/* away from the root */
579 934inline_speed void
580void inline_speed
581downheap (WT *heap, int N, int k) 935downheap (ANHE *heap, int N, int k)
582{ 936{
583 WT w = heap [k]; 937 ANHE he = heap [k];
938 ANHE *E = heap + N + HEAP0;
584 939
585 while (k < (N >> 1)) 940 for (;;)
586 { 941 {
587 int j = k << 1; 942 ev_tstamp minat;
943 ANHE *minpos;
944 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
588 945
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 946 /* find minimum child */
947 if (expect_true (pos + DHEAP - 1 < E))
590 ++j; 948 {
591 949 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
592 if (w->at <= heap [j]->at) 950 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
951 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
952 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
953 }
954 else if (pos < E)
955 {
956 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
957 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
958 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
959 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
960 }
961 else
593 break; 962 break;
594 963
964 if (ANHE_at (he) <= minat)
965 break;
966
967 heap [k] = *minpos;
968 ev_active (ANHE_w (*minpos)) = k;
969
970 k = minpos - heap;
971 }
972
973 heap [k] = he;
974 ev_active (ANHE_w (he)) = k;
975}
976
977#else /* 4HEAP */
978
979#define HEAP0 1
980#define HPARENT(k) ((k) >> 1)
981#define UPHEAP_DONE(p,k) (!(p))
982
983/* away from the root */
984inline_speed void
985downheap (ANHE *heap, int N, int k)
986{
987 ANHE he = heap [k];
988
989 for (;;)
990 {
991 int c = k << 1;
992
993 if (c > N + HEAP0 - 1)
994 break;
995
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0;
998
999 if (ANHE_at (he) <= ANHE_at (heap [c]))
1000 break;
1001
595 heap [k] = heap [j]; 1002 heap [k] = heap [c];
596 ((W)heap [k])->active = k + 1; 1003 ev_active (ANHE_w (heap [k])) = k;
1004
597 k = j; 1005 k = c;
598 } 1006 }
599 1007
600 heap [k] = w; 1008 heap [k] = he;
601 ((W)heap [k])->active = k + 1; 1009 ev_active (ANHE_w (he)) = k;
602} 1010}
1011#endif
603 1012
604void inline_size 1013/* towards the root */
1014inline_speed void
1015upheap (ANHE *heap, int k)
1016{
1017 ANHE he = heap [k];
1018
1019 for (;;)
1020 {
1021 int p = HPARENT (k);
1022
1023 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1024 break;
1025
1026 heap [k] = heap [p];
1027 ev_active (ANHE_w (heap [k])) = k;
1028 k = p;
1029 }
1030
1031 heap [k] = he;
1032 ev_active (ANHE_w (he)) = k;
1033}
1034
1035/* move an element suitably so it is in a correct place */
1036inline_size void
605adjustheap (WT *heap, int N, int k) 1037adjustheap (ANHE *heap, int N, int k)
606{ 1038{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
607 upheap (heap, k); 1040 upheap (heap, k);
1041 else
608 downheap (heap, N, k); 1042 downheap (heap, N, k);
1043}
1044
1045/* rebuild the heap: this function is used only once and executed rarely */
1046inline_size void
1047reheap (ANHE *heap, int N)
1048{
1049 int i;
1050
1051 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1052 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1053 for (i = 0; i < N; ++i)
1054 upheap (heap, i + HEAP0);
609} 1055}
610 1056
611/*****************************************************************************/ 1057/*****************************************************************************/
612 1058
1059/* associate signal watchers to a signal signal */
613typedef struct 1060typedef struct
614{ 1061{
615 WL head; 1062 WL head;
616 sig_atomic_t volatile gotsig; 1063 EV_ATOMIC_T gotsig;
617} ANSIG; 1064} ANSIG;
618 1065
619static ANSIG *signals; 1066static ANSIG *signals;
620static int signalmax; 1067static int signalmax;
621 1068
622static int sigpipe [2]; 1069static EV_ATOMIC_T gotsig;
623static sig_atomic_t volatile gotsig;
624static ev_io sigev;
625 1070
626void inline_size 1071/*****************************************************************************/
627signals_init (ANSIG *base, int count)
628{
629 while (count--)
630 {
631 base->head = 0;
632 base->gotsig = 0;
633 1072
634 ++base; 1073/* used to prepare libev internal fd's */
635 } 1074/* this is not fork-safe */
636} 1075inline_speed void
637
638static void
639sighandler (int signum)
640{
641#if _WIN32
642 signal (signum, sighandler);
643#endif
644
645 signals [signum - 1].gotsig = 1;
646
647 if (!gotsig)
648 {
649 int old_errno = errno;
650 gotsig = 1;
651 write (sigpipe [1], &signum, 1);
652 errno = old_errno;
653 }
654}
655
656void noinline
657ev_feed_signal_event (EV_P_ int signum)
658{
659 WL w;
660
661#if EV_MULTIPLICITY
662 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
663#endif
664
665 --signum;
666
667 if (signum < 0 || signum >= signalmax)
668 return;
669
670 signals [signum].gotsig = 0;
671
672 for (w = signals [signum].head; w; w = w->next)
673 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
674}
675
676static void
677sigcb (EV_P_ ev_io *iow, int revents)
678{
679 int signum;
680
681 read (sigpipe [0], &revents, 1);
682 gotsig = 0;
683
684 for (signum = signalmax; signum--; )
685 if (signals [signum].gotsig)
686 ev_feed_signal_event (EV_A_ signum + 1);
687}
688
689void inline_size
690fd_intern (int fd) 1076fd_intern (int fd)
691{ 1077{
692#ifdef _WIN32 1078#ifdef _WIN32
693 int arg = 1; 1079 unsigned long arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
695#else 1081#else
696 fcntl (fd, F_SETFD, FD_CLOEXEC); 1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
697 fcntl (fd, F_SETFL, O_NONBLOCK); 1083 fcntl (fd, F_SETFL, O_NONBLOCK);
698#endif 1084#endif
699} 1085}
700 1086
701static void noinline 1087static void noinline
702siginit (EV_P) 1088evpipe_init (EV_P)
703{ 1089{
1090 if (!ev_is_active (&pipe_w))
1091 {
1092#if EV_USE_EVENTFD
1093 if ((evfd = eventfd (0, 0)) >= 0)
1094 {
1095 evpipe [0] = -1;
1096 fd_intern (evfd);
1097 ev_io_set (&pipe_w, evfd, EV_READ);
1098 }
1099 else
1100#endif
1101 {
1102 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe");
1104
704 fd_intern (sigpipe [0]); 1105 fd_intern (evpipe [0]);
705 fd_intern (sigpipe [1]); 1106 fd_intern (evpipe [1]);
1107 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1108 }
706 1109
707 ev_io_set (&sigev, sigpipe [0], EV_READ);
708 ev_io_start (EV_A_ &sigev); 1110 ev_io_start (EV_A_ &pipe_w);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1111 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 }
1113}
1114
1115inline_size void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{
1118 if (!*flag)
1119 {
1120 int old_errno = errno; /* save errno because write might clobber it */
1121
1122 *flag = 1;
1123
1124#if EV_USE_EVENTFD
1125 if (evfd >= 0)
1126 {
1127 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t));
1129 }
1130 else
1131#endif
1132 write (evpipe [1], &old_errno, 1);
1133
1134 errno = old_errno;
1135 }
1136}
1137
1138/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */
1140static void
1141pipecb (EV_P_ ev_io *iow, int revents)
1142{
1143#if EV_USE_EVENTFD
1144 if (evfd >= 0)
1145 {
1146 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t));
1148 }
1149 else
1150#endif
1151 {
1152 char dummy;
1153 read (evpipe [0], &dummy, 1);
1154 }
1155
1156 if (gotsig && ev_is_default_loop (EV_A))
1157 {
1158 int signum;
1159 gotsig = 0;
1160
1161 for (signum = signalmax; signum--; )
1162 if (signals [signum].gotsig)
1163 ev_feed_signal_event (EV_A_ signum + 1);
1164 }
1165
1166#if EV_ASYNC_ENABLE
1167 if (gotasync)
1168 {
1169 int i;
1170 gotasync = 0;
1171
1172 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent)
1174 {
1175 asyncs [i]->sent = 0;
1176 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1177 }
1178 }
1179#endif
710} 1180}
711 1181
712/*****************************************************************************/ 1182/*****************************************************************************/
713 1183
1184static void
1185ev_sighandler (int signum)
1186{
1187#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct;
1189#endif
1190
1191#if _WIN32
1192 signal (signum, ev_sighandler);
1193#endif
1194
1195 signals [signum - 1].gotsig = 1;
1196 evpipe_write (EV_A_ &gotsig);
1197}
1198
1199void noinline
1200ev_feed_signal_event (EV_P_ int signum)
1201{
1202 WL w;
1203
1204#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1206#endif
1207
1208 --signum;
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return;
1212
1213 signals [signum].gotsig = 0;
1214
1215 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217}
1218
1219/*****************************************************************************/
1220
714static ev_child *childs [PID_HASHSIZE]; 1221static WL childs [EV_PID_HASHSIZE];
715 1222
716#ifndef _WIN32 1223#ifndef _WIN32
717 1224
718static ev_signal childev; 1225static ev_signal childev;
719 1226
720void inline_speed 1227#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0
1229#endif
1230
1231/* handle a single child status event */
1232inline_speed void
721child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1233child_reap (EV_P_ int chain, int pid, int status)
722{ 1234{
723 ev_child *w; 1235 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
724 1237
725 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 {
726 if (w->pid == pid || !w->pid) 1240 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1)))
727 { 1242 {
728 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
729 w->rpid = pid; 1244 w->rpid = pid;
730 w->rstatus = status; 1245 w->rstatus = status;
731 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1246 ev_feed_event (EV_A_ (W)w, EV_CHILD);
732 } 1247 }
1248 }
733} 1249}
734 1250
735#ifndef WCONTINUED 1251#ifndef WCONTINUED
736# define WCONTINUED 0 1252# define WCONTINUED 0
737#endif 1253#endif
738 1254
1255/* called on sigchld etc., calls waitpid */
739static void 1256static void
740childcb (EV_P_ ev_signal *sw, int revents) 1257childcb (EV_P_ ev_signal *sw, int revents)
741{ 1258{
742 int pid, status; 1259 int pid, status;
743 1260
… …
746 if (!WCONTINUED 1263 if (!WCONTINUED
747 || errno != EINVAL 1264 || errno != EINVAL
748 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1265 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
749 return; 1266 return;
750 1267
751 /* make sure we are called again until all childs have been reaped */ 1268 /* make sure we are called again until all children have been reaped */
752 /* we need to do it this way so that the callback gets called before we continue */ 1269 /* we need to do it this way so that the callback gets called before we continue */
753 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754 1271
755 child_reap (EV_A_ sw, pid, pid, status); 1272 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1)
756 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757} 1275}
758 1276
759#endif 1277#endif
760 1278
761/*****************************************************************************/ 1279/*****************************************************************************/
… …
823 /* kqueue is borked on everything but netbsd apparently */ 1341 /* kqueue is borked on everything but netbsd apparently */
824 /* it usually doesn't work correctly on anything but sockets and pipes */ 1342 /* it usually doesn't work correctly on anything but sockets and pipes */
825 flags &= ~EVBACKEND_KQUEUE; 1343 flags &= ~EVBACKEND_KQUEUE;
826#endif 1344#endif
827#ifdef __APPLE__ 1345#ifdef __APPLE__
828 // flags &= ~EVBACKEND_KQUEUE; for documentation 1346 /* only select works correctly on that "unix-certified" platform */
829 flags &= ~EVBACKEND_POLL; 1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
830#endif 1349#endif
831 1350
832 return flags; 1351 return flags;
833} 1352}
834 1353
835unsigned int 1354unsigned int
836ev_embeddable_backends (void) 1355ev_embeddable_backends (void)
837{ 1356{
838 return EVBACKEND_EPOLL 1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
839 | EVBACKEND_KQUEUE 1358
840 | EVBACKEND_PORT; 1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */
1361 flags &= ~EVBACKEND_EPOLL;
1362
1363 return flags;
841} 1364}
842 1365
843unsigned int 1366unsigned int
844ev_backend (EV_P) 1367ev_backend (EV_P)
845{ 1368{
846 return backend; 1369 return backend;
847} 1370}
848 1371
849static void 1372#if EV_MINIMAL < 2
1373unsigned int
1374ev_loop_count (EV_P)
1375{
1376 return loop_count;
1377}
1378
1379unsigned int
1380ev_loop_depth (EV_P)
1381{
1382 return loop_depth;
1383}
1384
1385void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1387{
1388 io_blocktime = interval;
1389}
1390
1391void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1393{
1394 timeout_blocktime = interval;
1395}
1396
1397void
1398ev_set_userdata (EV_P_ void *data)
1399{
1400 userdata = data;
1401}
1402
1403void *
1404ev_userdata (EV_P)
1405{
1406 return userdata;
1407}
1408
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410{
1411 invoke_cb = invoke_pending_cb;
1412}
1413
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P))
1415{
1416 suspend_cb = suspend_cb_;
1417 resume_cb = resume_cb_;
1418}
1419#endif
1420
1421/* initialise a loop structure, must be zero-initialised */
1422static void noinline
850loop_init (EV_P_ unsigned int flags) 1423loop_init (EV_P_ unsigned int flags)
851{ 1424{
852 if (!backend) 1425 if (!backend)
853 { 1426 {
1427#if EV_USE_REALTIME
1428 if (!have_realtime)
1429 {
1430 struct timespec ts;
1431
1432 if (!clock_gettime (CLOCK_REALTIME, &ts))
1433 have_realtime = 1;
1434 }
1435#endif
1436
854#if EV_USE_MONOTONIC 1437#if EV_USE_MONOTONIC
1438 if (!have_monotonic)
855 { 1439 {
856 struct timespec ts; 1440 struct timespec ts;
1441
857 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
858 have_monotonic = 1; 1443 have_monotonic = 1;
859 } 1444 }
860#endif 1445#endif
861 1446
862 ev_rt_now = ev_time (); 1447 ev_rt_now = ev_time ();
863 mn_now = get_clock (); 1448 mn_now = get_clock ();
864 now_floor = mn_now; 1449 now_floor = mn_now;
865 rtmn_diff = ev_rt_now - mn_now; 1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */
1465#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid ();
1468#endif
866 1469
867 if (!(flags & EVFLAG_NOENV) 1470 if (!(flags & EVFLAG_NOENV)
868 && !enable_secure () 1471 && !enable_secure ()
869 && getenv ("LIBEV_FLAGS")) 1472 && getenv ("LIBEV_FLAGS"))
870 flags = atoi (getenv ("LIBEV_FLAGS")); 1473 flags = atoi (getenv ("LIBEV_FLAGS"));
871 1474
872 if (!(flags & 0x0000ffffUL)) 1475 if (!(flags & 0x0000ffffU))
873 flags |= ev_recommended_backends (); 1476 flags |= ev_recommended_backends ();
874 1477
875 backend = 0;
876#if EV_USE_PORT 1478#if EV_USE_PORT
877 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878#endif 1480#endif
879#if EV_USE_KQUEUE 1481#if EV_USE_KQUEUE
880 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
887#endif 1489#endif
888#if EV_USE_SELECT 1490#if EV_USE_SELECT
889 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
890#endif 1492#endif
891 1493
1494 ev_prepare_init (&pending_w, pendingcb);
1495
892 ev_init (&sigev, sigcb); 1496 ev_init (&pipe_w, pipecb);
893 ev_set_priority (&sigev, EV_MAXPRI); 1497 ev_set_priority (&pipe_w, EV_MAXPRI);
894 } 1498 }
895} 1499}
896 1500
897static void 1501/* free up a loop structure */
1502static void noinline
898loop_destroy (EV_P) 1503loop_destroy (EV_P)
899{ 1504{
900 int i; 1505 int i;
1506
1507 if (ev_is_active (&pipe_w))
1508 {
1509 ev_ref (EV_A); /* signal watcher */
1510 ev_io_stop (EV_A_ &pipe_w);
1511
1512#if EV_USE_EVENTFD
1513 if (evfd >= 0)
1514 close (evfd);
1515#endif
1516
1517 if (evpipe [0] >= 0)
1518 {
1519 close (evpipe [0]);
1520 close (evpipe [1]);
1521 }
1522 }
1523
1524#if EV_USE_INOTIFY
1525 if (fs_fd >= 0)
1526 close (fs_fd);
1527#endif
1528
1529 if (backend_fd >= 0)
1530 close (backend_fd);
901 1531
902#if EV_USE_PORT 1532#if EV_USE_PORT
903 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904#endif 1534#endif
905#if EV_USE_KQUEUE 1535#if EV_USE_KQUEUE
… …
914#if EV_USE_SELECT 1544#if EV_USE_SELECT
915 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1545 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916#endif 1546#endif
917 1547
918 for (i = NUMPRI; i--; ) 1548 for (i = NUMPRI; i--; )
1549 {
919 array_free (pending, [i]); 1550 array_free (pending, [i]);
1551#if EV_IDLE_ENABLE
1552 array_free (idle, [i]);
1553#endif
1554 }
1555
1556 ev_free (anfds); anfdmax = 0;
920 1557
921 /* have to use the microsoft-never-gets-it-right macro */ 1558 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY);
922 array_free (fdchange, EMPTY0); 1560 array_free (fdchange, EMPTY);
923 array_free (timer, EMPTY0); 1561 array_free (timer, EMPTY);
924#if EV_PERIODIC_ENABLE 1562#if EV_PERIODIC_ENABLE
925 array_free (periodic, EMPTY0); 1563 array_free (periodic, EMPTY);
926#endif 1564#endif
1565#if EV_FORK_ENABLE
927 array_free (idle, EMPTY0); 1566 array_free (fork, EMPTY);
1567#endif
928 array_free (prepare, EMPTY0); 1568 array_free (prepare, EMPTY);
929 array_free (check, EMPTY0); 1569 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY);
1572#endif
930 1573
931 backend = 0; 1574 backend = 0;
932} 1575}
933 1576
934static void 1577#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P);
1579#endif
1580
1581inline_size void
935loop_fork (EV_P) 1582loop_fork (EV_P)
936{ 1583{
937#if EV_USE_PORT 1584#if EV_USE_PORT
938 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1585 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939#endif 1586#endif
… …
941 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1588 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942#endif 1589#endif
943#if EV_USE_EPOLL 1590#if EV_USE_EPOLL
944 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1591 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
945#endif 1592#endif
1593#if EV_USE_INOTIFY
1594 infy_fork (EV_A);
1595#endif
946 1596
947 if (ev_is_active (&sigev)) 1597 if (ev_is_active (&pipe_w))
948 { 1598 {
949 /* default loop */ 1599 /* this "locks" the handlers against writing to the pipe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
950 1605
951 ev_ref (EV_A); 1606 ev_ref (EV_A);
952 ev_io_stop (EV_A_ &sigev); 1607 ev_io_stop (EV_A_ &pipe_w);
1608
1609#if EV_USE_EVENTFD
1610 if (evfd >= 0)
1611 close (evfd);
1612#endif
1613
1614 if (evpipe [0] >= 0)
1615 {
953 close (sigpipe [0]); 1616 close (evpipe [0]);
954 close (sigpipe [1]); 1617 close (evpipe [1]);
1618 }
955 1619
956 while (pipe (sigpipe))
957 syserr ("(libev) error creating pipe");
958
959 siginit (EV_A); 1620 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ);
960 } 1623 }
961 1624
962 postfork = 0; 1625 postfork = 0;
963} 1626}
964 1627
965#if EV_MULTIPLICITY 1628#if EV_MULTIPLICITY
1629
966struct ev_loop * 1630struct ev_loop *
967ev_loop_new (unsigned int flags) 1631ev_loop_new (unsigned int flags)
968{ 1632{
969 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
970 1634
… …
986} 1650}
987 1651
988void 1652void
989ev_loop_fork (EV_P) 1653ev_loop_fork (EV_P)
990{ 1654{
991 postfork = 1; 1655 postfork = 1; /* must be in line with ev_default_fork */
992} 1656}
1657#endif /* multiplicity */
993 1658
1659#if EV_VERIFY
1660static void noinline
1661verify_watcher (EV_P_ W w)
1662{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664
1665 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667}
1668
1669static void noinline
1670verify_heap (EV_P_ ANHE *heap, int N)
1671{
1672 int i;
1673
1674 for (i = HEAP0; i < N + HEAP0; ++i)
1675 {
1676 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1677 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1678 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1679
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 }
1682}
1683
1684static void noinline
1685array_verify (EV_P_ W *ws, int cnt)
1686{
1687 while (cnt--)
1688 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]);
1691 }
1692}
1693#endif
1694
1695#if EV_MINIMAL < 2
1696void
1697ev_loop_verify (EV_P)
1698{
1699#if EV_VERIFY
1700 int i;
1701 WL w;
1702
1703 assert (activecnt >= -1);
1704
1705 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708
1709 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i)
1711 for (w = anfds [i].head; w; w = w->next)
1712 {
1713 verify_watcher (EV_A_ (W)w);
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1715 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 }
1717
1718 assert (timermax >= timercnt);
1719 verify_heap (EV_A_ timers, timercnt);
1720
1721#if EV_PERIODIC_ENABLE
1722 assert (periodicmax >= periodiccnt);
1723 verify_heap (EV_A_ periodics, periodiccnt);
1724#endif
1725
1726 for (i = NUMPRI; i--; )
1727 {
1728 assert (pendingmax [i] >= pendingcnt [i]);
1729#if EV_IDLE_ENABLE
1730 assert (idleall >= 0);
1731 assert (idlemax [i] >= idlecnt [i]);
1732 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1733#endif
1734 }
1735
1736#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif
1740
1741#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif
1745
1746 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt);
1748
1749 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt);
1751
1752# if 0
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1755# endif
1756#endif
1757}
994#endif 1758#endif
995 1759
996#if EV_MULTIPLICITY 1760#if EV_MULTIPLICITY
997struct ev_loop * 1761struct ev_loop *
998ev_default_loop_init (unsigned int flags) 1762ev_default_loop_init (unsigned int flags)
999#else 1763#else
1000int 1764int
1001ev_default_loop (unsigned int flags) 1765ev_default_loop (unsigned int flags)
1002#endif 1766#endif
1003{ 1767{
1004 if (sigpipe [0] == sigpipe [1])
1005 if (pipe (sigpipe))
1006 return 0;
1007
1008 if (!ev_default_loop_ptr) 1768 if (!ev_default_loop_ptr)
1009 { 1769 {
1010#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1011 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1012#else 1772#else
… …
1015 1775
1016 loop_init (EV_A_ flags); 1776 loop_init (EV_A_ flags);
1017 1777
1018 if (ev_backend (EV_A)) 1778 if (ev_backend (EV_A))
1019 { 1779 {
1020 siginit (EV_A);
1021
1022#ifndef _WIN32 1780#ifndef _WIN32
1023 ev_signal_init (&childev, childcb, SIGCHLD); 1781 ev_signal_init (&childev, childcb, SIGCHLD);
1024 ev_set_priority (&childev, EV_MAXPRI); 1782 ev_set_priority (&childev, EV_MAXPRI);
1025 ev_signal_start (EV_A_ &childev); 1783 ev_signal_start (EV_A_ &childev);
1026 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1784 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1038{ 1796{
1039#if EV_MULTIPLICITY 1797#if EV_MULTIPLICITY
1040 struct ev_loop *loop = ev_default_loop_ptr; 1798 struct ev_loop *loop = ev_default_loop_ptr;
1041#endif 1799#endif
1042 1800
1801 ev_default_loop_ptr = 0;
1802
1043#ifndef _WIN32 1803#ifndef _WIN32
1044 ev_ref (EV_A); /* child watcher */ 1804 ev_ref (EV_A); /* child watcher */
1045 ev_signal_stop (EV_A_ &childev); 1805 ev_signal_stop (EV_A_ &childev);
1046#endif 1806#endif
1047 1807
1048 ev_ref (EV_A); /* signal watcher */
1049 ev_io_stop (EV_A_ &sigev);
1050
1051 close (sigpipe [0]); sigpipe [0] = 0;
1052 close (sigpipe [1]); sigpipe [1] = 0;
1053
1054 loop_destroy (EV_A); 1808 loop_destroy (EV_A);
1055} 1809}
1056 1810
1057void 1811void
1058ev_default_fork (void) 1812ev_default_fork (void)
1059{ 1813{
1060#if EV_MULTIPLICITY 1814#if EV_MULTIPLICITY
1061 struct ev_loop *loop = ev_default_loop_ptr; 1815 struct ev_loop *loop = ev_default_loop_ptr;
1062#endif 1816#endif
1063 1817
1064 if (backend) 1818 postfork = 1; /* must be in line with ev_loop_fork */
1065 postfork = 1;
1066} 1819}
1067 1820
1068/*****************************************************************************/ 1821/*****************************************************************************/
1069 1822
1070int inline_size 1823void
1824ev_invoke (EV_P_ void *w, int revents)
1825{
1826 EV_CB_INVOKE ((W)w, revents);
1827}
1828
1829void noinline
1071any_pending (EV_P) 1830ev_invoke_pending (EV_P)
1072{
1073 int pri;
1074
1075 for (pri = NUMPRI; pri--; )
1076 if (pendingcnt [pri])
1077 return 1;
1078
1079 return 0;
1080}
1081
1082void inline_speed
1083call_pending (EV_P)
1084{ 1831{
1085 int pri; 1832 int pri;
1086 1833
1087 for (pri = NUMPRI; pri--; ) 1834 for (pri = NUMPRI; pri--; )
1088 while (pendingcnt [pri]) 1835 while (pendingcnt [pri])
1089 { 1836 {
1090 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091 1838
1092 if (expect_true (p->w))
1093 {
1094 assert (("non-pending watcher on pending list", p->w->pending)); 1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1095 1841
1096 p->w->pending = 0; 1842 p->w->pending = 0;
1097 EV_CB_INVOKE (p->w, p->events); 1843 EV_CB_INVOKE (p->w, p->events);
1098 } 1844 EV_FREQUENT_CHECK;
1099 } 1845 }
1100} 1846}
1101 1847
1102void inline_size 1848#if EV_IDLE_ENABLE
1849/* make idle watchers pending. this handles the "call-idle */
1850/* only when higher priorities are idle" logic */
1851inline_size void
1852idle_reify (EV_P)
1853{
1854 if (expect_false (idleall))
1855 {
1856 int pri;
1857
1858 for (pri = NUMPRI; pri--; )
1859 {
1860 if (pendingcnt [pri])
1861 break;
1862
1863 if (idlecnt [pri])
1864 {
1865 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1866 break;
1867 }
1868 }
1869 }
1870}
1871#endif
1872
1873/* make timers pending */
1874inline_size void
1103timers_reify (EV_P) 1875timers_reify (EV_P)
1104{ 1876{
1877 EV_FREQUENT_CHECK;
1878
1105 while (timercnt && ((WT)timers [0])->at <= mn_now) 1879 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1106 { 1880 {
1107 ev_timer *w = timers [0]; 1881 do
1108
1109 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1110
1111 /* first reschedule or stop timer */
1112 if (w->repeat)
1113 { 1882 {
1883 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1884
1885 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1886
1887 /* first reschedule or stop timer */
1888 if (w->repeat)
1889 {
1890 ev_at (w) += w->repeat;
1891 if (ev_at (w) < mn_now)
1892 ev_at (w) = mn_now;
1893
1114 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1894 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115 1895
1116 ((WT)w)->at += w->repeat; 1896 ANHE_at_cache (timers [HEAP0]);
1117 if (((WT)w)->at < mn_now)
1118 ((WT)w)->at = mn_now;
1119
1120 downheap ((WT *)timers, timercnt, 0); 1897 downheap (timers, timercnt, HEAP0);
1898 }
1899 else
1900 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1901
1902 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w);
1121 } 1904 }
1122 else 1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1123 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124 1906
1125 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1907 feed_reverse_done (EV_A_ EV_TIMEOUT);
1126 } 1908 }
1127} 1909}
1128 1910
1129#if EV_PERIODIC_ENABLE 1911#if EV_PERIODIC_ENABLE
1130void inline_size 1912/* make periodics pending */
1913inline_size void
1131periodics_reify (EV_P) 1914periodics_reify (EV_P)
1132{ 1915{
1916 EV_FREQUENT_CHECK;
1917
1133 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1918 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1134 { 1919 {
1135 ev_periodic *w = periodics [0]; 1920 int feed_count = 0;
1136 1921
1137 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1922 do
1138
1139 /* first reschedule or stop timer */
1140 if (w->reschedule_cb)
1141 { 1923 {
1924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1925
1926 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1927
1928 /* first reschedule or stop timer */
1929 if (w->reschedule_cb)
1930 {
1142 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1932
1143 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1933 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1934
1935 ANHE_at_cache (periodics [HEAP0]);
1144 downheap ((WT *)periodics, periodiccnt, 0); 1936 downheap (periodics, periodiccnt, HEAP0);
1937 }
1938 else if (w->interval)
1939 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0);
1956 }
1957 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1959
1960 EV_FREQUENT_CHECK;
1961 feed_reverse (EV_A_ (W)w);
1145 } 1962 }
1146 else if (w->interval) 1963 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1147 {
1148 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1149 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1150 downheap ((WT *)periodics, periodiccnt, 0);
1151 }
1152 else
1153 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154 1964
1155 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1965 feed_reverse_done (EV_A_ EV_PERIODIC);
1156 } 1966 }
1157} 1967}
1158 1968
1969/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1159static void noinline 1971static void noinline
1160periodics_reschedule (EV_P) 1972periodics_reschedule (EV_P)
1161{ 1973{
1162 int i; 1974 int i;
1163 1975
1164 /* adjust periodics after time jump */ 1976 /* adjust periodics after time jump */
1165 for (i = 0; i < periodiccnt; ++i) 1977 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1166 { 1978 {
1167 ev_periodic *w = periodics [i]; 1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1168 1980
1169 if (w->reschedule_cb) 1981 if (w->reschedule_cb)
1170 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1171 else if (w->interval) 1983 else if (w->interval)
1172 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1985
1986 ANHE_at_cache (periodics [i]);
1987 }
1988
1989 reheap (periodics, periodiccnt);
1990}
1991#endif
1992
1993/* adjust all timers by a given offset */
1994static void noinline
1995timers_reschedule (EV_P_ ev_tstamp adjust)
1996{
1997 int i;
1998
1999 for (i = 0; i < timercnt; ++i)
1173 } 2000 {
1174 2001 ANHE *he = timers + i + HEAP0;
1175 /* now rebuild the heap */ 2002 ANHE_w (*he)->at += adjust;
1176 for (i = periodiccnt >> 1; i--; ) 2003 ANHE_at_cache (*he);
1177 downheap ((WT *)periodics, periodiccnt, i); 2004 }
1178} 2005}
1179#endif
1180 2006
1181int inline_size 2007/* fetch new monotonic and realtime times from the kernel */
1182time_update_monotonic (EV_P) 2008/* also detetc if there was a timejump, and act accordingly */
2009inline_speed void
2010time_update (EV_P_ ev_tstamp max_block)
1183{ 2011{
2012#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic))
2014 {
2015 int i;
2016 ev_tstamp odiff = rtmn_diff;
2017
1184 mn_now = get_clock (); 2018 mn_now = get_clock ();
1185 2019
2020 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2021 /* interpolate in the meantime */
1186 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 2022 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187 { 2023 {
1188 ev_rt_now = rtmn_diff + mn_now; 2024 ev_rt_now = rtmn_diff + mn_now;
1189 return 0; 2025 return;
1190 } 2026 }
1191 else 2027
1192 {
1193 now_floor = mn_now; 2028 now_floor = mn_now;
1194 ev_rt_now = ev_time (); 2029 ev_rt_now = ev_time ();
1195 return 1;
1196 }
1197}
1198 2030
1199void inline_size 2031 /* loop a few times, before making important decisions.
1200time_update (EV_P) 2032 * on the choice of "4": one iteration isn't enough,
1201{ 2033 * in case we get preempted during the calls to
1202 int i; 2034 * ev_time and get_clock. a second call is almost guaranteed
1203 2035 * to succeed in that case, though. and looping a few more times
1204#if EV_USE_MONOTONIC 2036 * doesn't hurt either as we only do this on time-jumps or
1205 if (expect_true (have_monotonic)) 2037 * in the unlikely event of having been preempted here.
1206 { 2038 */
1207 if (time_update_monotonic (EV_A)) 2039 for (i = 4; --i; )
1208 { 2040 {
1209 ev_tstamp odiff = rtmn_diff;
1210
1211 /* loop a few times, before making important decisions.
1212 * on the choice of "4": one iteration isn't enough,
1213 * in case we get preempted during the calls to
1214 * ev_time and get_clock. a second call is almost guarenteed
1215 * to succeed in that case, though. and looping a few more times
1216 * doesn't hurt either as we only do this on time-jumps or
1217 * in the unlikely event of getting preempted here.
1218 */
1219 for (i = 4; --i; )
1220 {
1221 rtmn_diff = ev_rt_now - mn_now; 2041 rtmn_diff = ev_rt_now - mn_now;
1222 2042
1223 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1224 return; /* all is well */ 2044 return; /* all is well */
1225 2045
1226 ev_rt_now = ev_time (); 2046 ev_rt_now = ev_time ();
1227 mn_now = get_clock (); 2047 mn_now = get_clock ();
1228 now_floor = mn_now; 2048 now_floor = mn_now;
1229 } 2049 }
1230 2050
2051 /* no timer adjustment, as the monotonic clock doesn't jump */
2052 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1231# if EV_PERIODIC_ENABLE 2053# if EV_PERIODIC_ENABLE
1232 periodics_reschedule (EV_A); 2054 periodics_reschedule (EV_A);
1233# endif 2055# endif
1234 /* no timer adjustment, as the monotonic clock doesn't jump */
1235 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236 }
1237 } 2056 }
1238 else 2057 else
1239#endif 2058#endif
1240 { 2059 {
1241 ev_rt_now = ev_time (); 2060 ev_rt_now = ev_time ();
1242 2061
1243 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2062 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244 { 2063 {
2064 /* adjust timers. this is easy, as the offset is the same for all of them */
2065 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1245#if EV_PERIODIC_ENABLE 2066#if EV_PERIODIC_ENABLE
1246 periodics_reschedule (EV_A); 2067 periodics_reschedule (EV_A);
1247#endif 2068#endif
1248
1249 /* adjust timers. this is easy, as the offset is the same for all */
1250 for (i = 0; i < timercnt; ++i)
1251 ((WT)timers [i])->at += ev_rt_now - mn_now;
1252 } 2069 }
1253 2070
1254 mn_now = ev_rt_now; 2071 mn_now = ev_rt_now;
1255 } 2072 }
1256} 2073}
1257 2074
1258void 2075void
1259ev_ref (EV_P)
1260{
1261 ++activecnt;
1262}
1263
1264void
1265ev_unref (EV_P)
1266{
1267 --activecnt;
1268}
1269
1270static int loop_done;
1271
1272void
1273ev_loop (EV_P_ int flags) 2076ev_loop (EV_P_ int flags)
1274{ 2077{
1275 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2078#if EV_MINIMAL < 2
1276 ? EVUNLOOP_ONE 2079 ++loop_depth;
1277 : EVUNLOOP_CANCEL; 2080#endif
1278 2081
1279 while (activecnt) 2082 loop_done = EVUNLOOP_CANCEL;
2083
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085
2086 do
1280 { 2087 {
1281 /* we might have forked, so reify kernel state if necessary */ 2088#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A);
2090#endif
2091
2092#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid))
2095 {
2096 curpid = getpid ();
2097 postfork = 1;
2098 }
2099#endif
2100
1282 #if EV_FORK_ENABLE 2101#if EV_FORK_ENABLE
2102 /* we might have forked, so queue fork handlers */
1283 if (expect_false (postfork)) 2103 if (expect_false (postfork))
1284 if (forkcnt) 2104 if (forkcnt)
1285 { 2105 {
1286 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1287 call_pending (EV_A); 2107 EV_INVOKE_PENDING;
1288 } 2108 }
1289 #endif 2109#endif
1290 2110
1291 /* queue check watchers (and execute them) */ 2111 /* queue prepare watchers (and execute them) */
1292 if (expect_false (preparecnt)) 2112 if (expect_false (preparecnt))
1293 { 2113 {
1294 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1295 call_pending (EV_A); 2115 EV_INVOKE_PENDING;
1296 } 2116 }
1297 2117
1298 /* we might have forked, so reify kernel state if necessary */ 2118 /* we might have forked, so reify kernel state if necessary */
1299 if (expect_false (postfork)) 2119 if (expect_false (postfork))
1300 loop_fork (EV_A); 2120 loop_fork (EV_A);
… …
1302 /* update fd-related kernel structures */ 2122 /* update fd-related kernel structures */
1303 fd_reify (EV_A); 2123 fd_reify (EV_A);
1304 2124
1305 /* calculate blocking time */ 2125 /* calculate blocking time */
1306 { 2126 {
1307 double block; 2127 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.;
1308 2129
1309 if (flags & EVLOOP_NONBLOCK || idlecnt) 2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1310 block = 0.; /* do not block at all */
1311 else
1312 { 2131 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
1313 /* update time to cancel out callback processing overhead */ 2135 /* update time to cancel out callback processing overhead */
1314#if EV_USE_MONOTONIC
1315 if (expect_true (have_monotonic))
1316 time_update_monotonic (EV_A); 2136 time_update (EV_A_ 1e100);
1317 else
1318#endif
1319 {
1320 ev_rt_now = ev_time ();
1321 mn_now = ev_rt_now;
1322 }
1323 2137
1324 block = MAX_BLOCKTIME; 2138 waittime = MAX_BLOCKTIME;
1325 2139
1326 if (timercnt) 2140 if (timercnt)
1327 { 2141 {
1328 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1329 if (block > to) block = to; 2143 if (waittime > to) waittime = to;
1330 } 2144 }
1331 2145
1332#if EV_PERIODIC_ENABLE 2146#if EV_PERIODIC_ENABLE
1333 if (periodiccnt) 2147 if (periodiccnt)
1334 { 2148 {
1335 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1336 if (block > to) block = to; 2150 if (waittime > to) waittime = to;
1337 } 2151 }
1338#endif 2152#endif
1339 2153
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime;
2157
2158 /* extra check because io_blocktime is commonly 0 */
1340 if (expect_false (block < 0.)) block = 0.; 2159 if (expect_false (io_blocktime))
2160 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162
2163 if (sleeptime > waittime - backend_fudge)
2164 sleeptime = waittime - backend_fudge;
2165
2166 if (expect_true (sleeptime > 0.))
2167 {
2168 ev_sleep (sleeptime);
2169 waittime -= sleeptime;
2170 }
2171 }
1341 } 2172 }
1342 2173
2174#if EV_MINIMAL < 2
2175 ++loop_count;
2176#endif
1343 backend_poll (EV_A_ block); 2177 backend_poll (EV_A_ waittime);
2178
2179 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime);
1344 } 2181 }
1345
1346 /* update ev_rt_now, do magic */
1347 time_update (EV_A);
1348 2182
1349 /* queue pending timers and reschedule them */ 2183 /* queue pending timers and reschedule them */
1350 timers_reify (EV_A); /* relative timers called last */ 2184 timers_reify (EV_A); /* relative timers called last */
1351#if EV_PERIODIC_ENABLE 2185#if EV_PERIODIC_ENABLE
1352 periodics_reify (EV_A); /* absolute timers called first */ 2186 periodics_reify (EV_A); /* absolute timers called first */
1353#endif 2187#endif
1354 2188
2189#if EV_IDLE_ENABLE
1355 /* queue idle watchers unless other events are pending */ 2190 /* queue idle watchers unless other events are pending */
1356 if (idlecnt && !any_pending (EV_A)) 2191 idle_reify (EV_A);
1357 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2192#endif
1358 2193
1359 /* queue check watchers, to be executed first */ 2194 /* queue check watchers, to be executed first */
1360 if (expect_false (checkcnt)) 2195 if (expect_false (checkcnt))
1361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1362 2197
1363 call_pending (EV_A); 2198 EV_INVOKE_PENDING;
1364
1365 if (expect_false (loop_done))
1366 break;
1367 } 2199 }
2200 while (expect_true (
2201 activecnt
2202 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2204 ));
1368 2205
1369 if (loop_done == EVUNLOOP_ONE) 2206 if (loop_done == EVUNLOOP_ONE)
1370 loop_done = EVUNLOOP_CANCEL; 2207 loop_done = EVUNLOOP_CANCEL;
2208
2209#if EV_MINIMAL < 2
2210 --loop_depth;
2211#endif
1371} 2212}
1372 2213
1373void 2214void
1374ev_unloop (EV_P_ int how) 2215ev_unloop (EV_P_ int how)
1375{ 2216{
1376 loop_done = how; 2217 loop_done = how;
1377} 2218}
1378 2219
2220void
2221ev_ref (EV_P)
2222{
2223 ++activecnt;
2224}
2225
2226void
2227ev_unref (EV_P)
2228{
2229 --activecnt;
2230}
2231
2232void
2233ev_now_update (EV_P)
2234{
2235 time_update (EV_A_ 1e100);
2236}
2237
2238void
2239ev_suspend (EV_P)
2240{
2241 ev_now_update (EV_A);
2242}
2243
2244void
2245ev_resume (EV_P)
2246{
2247 ev_tstamp mn_prev = mn_now;
2248
2249 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev);
2251#if EV_PERIODIC_ENABLE
2252 /* TODO: really do this? */
2253 periodics_reschedule (EV_A);
2254#endif
2255}
2256
1379/*****************************************************************************/ 2257/*****************************************************************************/
2258/* singly-linked list management, used when the expected list length is short */
1380 2259
1381void inline_size 2260inline_size void
1382wlist_add (WL *head, WL elem) 2261wlist_add (WL *head, WL elem)
1383{ 2262{
1384 elem->next = *head; 2263 elem->next = *head;
1385 *head = elem; 2264 *head = elem;
1386} 2265}
1387 2266
1388void inline_size 2267inline_size void
1389wlist_del (WL *head, WL elem) 2268wlist_del (WL *head, WL elem)
1390{ 2269{
1391 while (*head) 2270 while (*head)
1392 { 2271 {
1393 if (*head == elem) 2272 if (*head == elem)
… …
1398 2277
1399 head = &(*head)->next; 2278 head = &(*head)->next;
1400 } 2279 }
1401} 2280}
1402 2281
1403void inline_speed 2282/* internal, faster, version of ev_clear_pending */
2283inline_speed void
1404ev_clear_pending (EV_P_ W w) 2284clear_pending (EV_P_ W w)
1405{ 2285{
1406 if (w->pending) 2286 if (w->pending)
1407 { 2287 {
1408 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2288 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1409 w->pending = 0; 2289 w->pending = 0;
1410 } 2290 }
1411} 2291}
1412 2292
1413void inline_speed 2293int
2294ev_clear_pending (EV_P_ void *w)
2295{
2296 W w_ = (W)w;
2297 int pending = w_->pending;
2298
2299 if (expect_true (pending))
2300 {
2301 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2302 p->w = (W)&pending_w;
2303 w_->pending = 0;
2304 return p->events;
2305 }
2306 else
2307 return 0;
2308}
2309
2310inline_size void
2311pri_adjust (EV_P_ W w)
2312{
2313 int pri = ev_priority (w);
2314 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2315 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2316 ev_set_priority (w, pri);
2317}
2318
2319inline_speed void
1414ev_start (EV_P_ W w, int active) 2320ev_start (EV_P_ W w, int active)
1415{ 2321{
1416 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2322 pri_adjust (EV_A_ w);
1417 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1418
1419 w->active = active; 2323 w->active = active;
1420 ev_ref (EV_A); 2324 ev_ref (EV_A);
1421} 2325}
1422 2326
1423void inline_size 2327inline_size void
1424ev_stop (EV_P_ W w) 2328ev_stop (EV_P_ W w)
1425{ 2329{
1426 ev_unref (EV_A); 2330 ev_unref (EV_A);
1427 w->active = 0; 2331 w->active = 0;
1428} 2332}
1429 2333
1430/*****************************************************************************/ 2334/*****************************************************************************/
1431 2335
1432void 2336void noinline
1433ev_io_start (EV_P_ ev_io *w) 2337ev_io_start (EV_P_ ev_io *w)
1434{ 2338{
1435 int fd = w->fd; 2339 int fd = w->fd;
1436 2340
1437 if (expect_false (ev_is_active (w))) 2341 if (expect_false (ev_is_active (w)))
1438 return; 2342 return;
1439 2343
1440 assert (("ev_io_start called with negative fd", fd >= 0)); 2344 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346
2347 EV_FREQUENT_CHECK;
1441 2348
1442 ev_start (EV_A_ (W)w, 1); 2349 ev_start (EV_A_ (W)w, 1);
1443 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1444 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2351 wlist_add (&anfds[fd].head, (WL)w);
1445 2352
1446 fd_change (EV_A_ fd); 2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1447} 2354 w->events &= ~EV__IOFDSET;
1448 2355
1449void 2356 EV_FREQUENT_CHECK;
2357}
2358
2359void noinline
1450ev_io_stop (EV_P_ ev_io *w) 2360ev_io_stop (EV_P_ ev_io *w)
1451{ 2361{
1452 ev_clear_pending (EV_A_ (W)w); 2362 clear_pending (EV_A_ (W)w);
1453 if (expect_false (!ev_is_active (w))) 2363 if (expect_false (!ev_is_active (w)))
1454 return; 2364 return;
1455 2365
1456 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2366 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1457 2367
2368 EV_FREQUENT_CHECK;
2369
1458 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2370 wlist_del (&anfds[w->fd].head, (WL)w);
1459 ev_stop (EV_A_ (W)w); 2371 ev_stop (EV_A_ (W)w);
1460 2372
1461 fd_change (EV_A_ w->fd); 2373 fd_change (EV_A_ w->fd, 1);
1462}
1463 2374
1464void 2375 EV_FREQUENT_CHECK;
2376}
2377
2378void noinline
1465ev_timer_start (EV_P_ ev_timer *w) 2379ev_timer_start (EV_P_ ev_timer *w)
1466{ 2380{
1467 if (expect_false (ev_is_active (w))) 2381 if (expect_false (ev_is_active (w)))
1468 return; 2382 return;
1469 2383
1470 ((WT)w)->at += mn_now; 2384 ev_at (w) += mn_now;
1471 2385
1472 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2386 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1473 2387
2388 EV_FREQUENT_CHECK;
2389
2390 ++timercnt;
1474 ev_start (EV_A_ (W)w, ++timercnt); 2391 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1475 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2392 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1476 timers [timercnt - 1] = w; 2393 ANHE_w (timers [ev_active (w)]) = (WT)w;
1477 upheap ((WT *)timers, timercnt - 1); 2394 ANHE_at_cache (timers [ev_active (w)]);
2395 upheap (timers, ev_active (w));
1478 2396
2397 EV_FREQUENT_CHECK;
2398
1479 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1480} 2400}
1481 2401
1482void 2402void noinline
1483ev_timer_stop (EV_P_ ev_timer *w) 2403ev_timer_stop (EV_P_ ev_timer *w)
1484{ 2404{
1485 ev_clear_pending (EV_A_ (W)w); 2405 clear_pending (EV_A_ (W)w);
1486 if (expect_false (!ev_is_active (w))) 2406 if (expect_false (!ev_is_active (w)))
1487 return; 2407 return;
1488 2408
2409 EV_FREQUENT_CHECK;
2410
2411 {
2412 int active = ev_active (w);
2413
1489 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2414 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1490 2415
2416 --timercnt;
2417
1491 if (expect_true (((W)w)->active < timercnt--)) 2418 if (expect_true (active < timercnt + HEAP0))
1492 { 2419 {
1493 timers [((W)w)->active - 1] = timers [timercnt]; 2420 timers [active] = timers [timercnt + HEAP0];
1494 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2421 adjustheap (timers, timercnt, active);
1495 } 2422 }
2423 }
1496 2424
1497 ((WT)w)->at -= mn_now; 2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now;
1498 2428
1499 ev_stop (EV_A_ (W)w); 2429 ev_stop (EV_A_ (W)w);
1500} 2430}
1501 2431
1502void 2432void noinline
1503ev_timer_again (EV_P_ ev_timer *w) 2433ev_timer_again (EV_P_ ev_timer *w)
1504{ 2434{
2435 EV_FREQUENT_CHECK;
2436
1505 if (ev_is_active (w)) 2437 if (ev_is_active (w))
1506 { 2438 {
1507 if (w->repeat) 2439 if (w->repeat)
1508 { 2440 {
1509 ((WT)w)->at = mn_now + w->repeat; 2441 ev_at (w) = mn_now + w->repeat;
2442 ANHE_at_cache (timers [ev_active (w)]);
1510 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2443 adjustheap (timers, timercnt, ev_active (w));
1511 } 2444 }
1512 else 2445 else
1513 ev_timer_stop (EV_A_ w); 2446 ev_timer_stop (EV_A_ w);
1514 } 2447 }
1515 else if (w->repeat) 2448 else if (w->repeat)
1516 { 2449 {
1517 w->at = w->repeat; 2450 ev_at (w) = w->repeat;
1518 ev_timer_start (EV_A_ w); 2451 ev_timer_start (EV_A_ w);
1519 } 2452 }
2453
2454 EV_FREQUENT_CHECK;
1520} 2455}
1521 2456
1522#if EV_PERIODIC_ENABLE 2457#if EV_PERIODIC_ENABLE
1523void 2458void noinline
1524ev_periodic_start (EV_P_ ev_periodic *w) 2459ev_periodic_start (EV_P_ ev_periodic *w)
1525{ 2460{
1526 if (expect_false (ev_is_active (w))) 2461 if (expect_false (ev_is_active (w)))
1527 return; 2462 return;
1528 2463
1529 if (w->reschedule_cb) 2464 if (w->reschedule_cb)
1530 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1531 else if (w->interval) 2466 else if (w->interval)
1532 { 2467 {
1533 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1534 /* this formula differs from the one in periodic_reify because we do not always round up */ 2469 /* this formula differs from the one in periodic_reify because we do not always round up */
1535 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1536 } 2471 }
2472 else
2473 ev_at (w) = w->offset;
1537 2474
2475 EV_FREQUENT_CHECK;
2476
2477 ++periodiccnt;
1538 ev_start (EV_A_ (W)w, ++periodiccnt); 2478 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1539 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2479 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1540 periodics [periodiccnt - 1] = w; 2480 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1541 upheap ((WT *)periodics, periodiccnt - 1); 2481 ANHE_at_cache (periodics [ev_active (w)]);
2482 upheap (periodics, ev_active (w));
1542 2483
2484 EV_FREQUENT_CHECK;
2485
1543 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1544} 2487}
1545 2488
1546void 2489void noinline
1547ev_periodic_stop (EV_P_ ev_periodic *w) 2490ev_periodic_stop (EV_P_ ev_periodic *w)
1548{ 2491{
1549 ev_clear_pending (EV_A_ (W)w); 2492 clear_pending (EV_A_ (W)w);
1550 if (expect_false (!ev_is_active (w))) 2493 if (expect_false (!ev_is_active (w)))
1551 return; 2494 return;
1552 2495
2496 EV_FREQUENT_CHECK;
2497
2498 {
2499 int active = ev_active (w);
2500
1553 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2501 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1554 2502
2503 --periodiccnt;
2504
1555 if (expect_true (((W)w)->active < periodiccnt--)) 2505 if (expect_true (active < periodiccnt + HEAP0))
1556 { 2506 {
1557 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2507 periodics [active] = periodics [periodiccnt + HEAP0];
1558 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2508 adjustheap (periodics, periodiccnt, active);
1559 } 2509 }
2510 }
2511
2512 EV_FREQUENT_CHECK;
1560 2513
1561 ev_stop (EV_A_ (W)w); 2514 ev_stop (EV_A_ (W)w);
1562} 2515}
1563 2516
1564void 2517void noinline
1565ev_periodic_again (EV_P_ ev_periodic *w) 2518ev_periodic_again (EV_P_ ev_periodic *w)
1566{ 2519{
1567 /* TODO: use adjustheap and recalculation */ 2520 /* TODO: use adjustheap and recalculation */
1568 ev_periodic_stop (EV_A_ w); 2521 ev_periodic_stop (EV_A_ w);
1569 ev_periodic_start (EV_A_ w); 2522 ev_periodic_start (EV_A_ w);
… …
1572 2525
1573#ifndef SA_RESTART 2526#ifndef SA_RESTART
1574# define SA_RESTART 0 2527# define SA_RESTART 0
1575#endif 2528#endif
1576 2529
1577void 2530void noinline
1578ev_signal_start (EV_P_ ev_signal *w) 2531ev_signal_start (EV_P_ ev_signal *w)
1579{ 2532{
1580#if EV_MULTIPLICITY 2533#if EV_MULTIPLICITY
1581 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1582#endif 2535#endif
1583 if (expect_false (ev_is_active (w))) 2536 if (expect_false (ev_is_active (w)))
1584 return; 2537 return;
1585 2538
1586 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2540
2541 evpipe_init (EV_A);
2542
2543 EV_FREQUENT_CHECK;
2544
2545 {
2546#ifndef _WIN32
2547 sigset_t full, prev;
2548 sigfillset (&full);
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2553
2554#ifndef _WIN32
2555 sigprocmask (SIG_SETMASK, &prev, 0);
2556#endif
2557 }
1587 2558
1588 ev_start (EV_A_ (W)w, 1); 2559 ev_start (EV_A_ (W)w, 1);
1589 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1590 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2560 wlist_add (&signals [w->signum - 1].head, (WL)w);
1591 2561
1592 if (!((WL)w)->next) 2562 if (!((WL)w)->next)
1593 { 2563 {
1594#if _WIN32 2564#if _WIN32
1595 signal (w->signum, sighandler); 2565 signal (w->signum, ev_sighandler);
1596#else 2566#else
1597 struct sigaction sa; 2567 struct sigaction sa;
1598 sa.sa_handler = sighandler; 2568 sa.sa_handler = ev_sighandler;
1599 sigfillset (&sa.sa_mask); 2569 sigfillset (&sa.sa_mask);
1600 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1601 sigaction (w->signum, &sa, 0); 2571 sigaction (w->signum, &sa, 0);
1602#endif 2572#endif
1603 } 2573 }
1604}
1605 2574
1606void 2575 EV_FREQUENT_CHECK;
2576}
2577
2578void noinline
1607ev_signal_stop (EV_P_ ev_signal *w) 2579ev_signal_stop (EV_P_ ev_signal *w)
1608{ 2580{
1609 ev_clear_pending (EV_A_ (W)w); 2581 clear_pending (EV_A_ (W)w);
1610 if (expect_false (!ev_is_active (w))) 2582 if (expect_false (!ev_is_active (w)))
1611 return; 2583 return;
1612 2584
2585 EV_FREQUENT_CHECK;
2586
1613 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2587 wlist_del (&signals [w->signum - 1].head, (WL)w);
1614 ev_stop (EV_A_ (W)w); 2588 ev_stop (EV_A_ (W)w);
1615 2589
1616 if (!signals [w->signum - 1].head) 2590 if (!signals [w->signum - 1].head)
1617 signal (w->signum, SIG_DFL); 2591 signal (w->signum, SIG_DFL);
2592
2593 EV_FREQUENT_CHECK;
1618} 2594}
1619 2595
1620void 2596void
1621ev_child_start (EV_P_ ev_child *w) 2597ev_child_start (EV_P_ ev_child *w)
1622{ 2598{
1623#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
1624 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1625#endif 2601#endif
1626 if (expect_false (ev_is_active (w))) 2602 if (expect_false (ev_is_active (w)))
1627 return; 2603 return;
1628 2604
2605 EV_FREQUENT_CHECK;
2606
1629 ev_start (EV_A_ (W)w, 1); 2607 ev_start (EV_A_ (W)w, 1);
1630 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2609
2610 EV_FREQUENT_CHECK;
1631} 2611}
1632 2612
1633void 2613void
1634ev_child_stop (EV_P_ ev_child *w) 2614ev_child_stop (EV_P_ ev_child *w)
1635{ 2615{
1636 ev_clear_pending (EV_A_ (W)w); 2616 clear_pending (EV_A_ (W)w);
1637 if (expect_false (!ev_is_active (w))) 2617 if (expect_false (!ev_is_active (w)))
1638 return; 2618 return;
1639 2619
2620 EV_FREQUENT_CHECK;
2621
1640 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1641 ev_stop (EV_A_ (W)w); 2623 ev_stop (EV_A_ (W)w);
2624
2625 EV_FREQUENT_CHECK;
1642} 2626}
1643 2627
1644#if EV_STAT_ENABLE 2628#if EV_STAT_ENABLE
1645 2629
1646# ifdef _WIN32 2630# ifdef _WIN32
1647# undef lstat 2631# undef lstat
1648# define lstat(a,b) _stati64 (a,b) 2632# define lstat(a,b) _stati64 (a,b)
1649# endif 2633# endif
1650 2634
1651#define DEF_STAT_INTERVAL 5.0074891 2635#define DEF_STAT_INTERVAL 5.0074891
2636#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1652#define MIN_STAT_INTERVAL 0.1074891 2637#define MIN_STAT_INTERVAL 0.1074891
2638
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640
2641#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192
2643
2644static void noinline
2645infy_add (EV_P_ ev_stat *w)
2646{
2647 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);
2648
2649 if (w->wd < 0)
2650 {
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653
2654 /* monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 {
2659 char path [4096];
2660 strcpy (path, w->path);
2661
2662 do
2663 {
2664 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2665 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2666
2667 char *pend = strrchr (path, '/');
2668
2669 if (!pend || pend == path)
2670 break;
2671
2672 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 }
2677 }
2678
2679 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2682
2683 /* now local changes will be tracked by inotify, but remote changes won't */
2684 /* unless the filesystem it known to be local, we therefore still poll */
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer);
2699 }
2700}
2701
2702static void noinline
2703infy_del (EV_P_ ev_stat *w)
2704{
2705 int slot;
2706 int wd = w->wd;
2707
2708 if (wd < 0)
2709 return;
2710
2711 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w);
2714
2715 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd);
2717}
2718
2719static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{
2722 if (slot < 0)
2723 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2725 infy_wd (EV_A_ slot, wd, ev);
2726 else
2727 {
2728 WL w_;
2729
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2731 {
2732 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */
2734
2735 if (w->wd == wd || wd == -1)
2736 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2740 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */
2742 }
2743
2744 stat_timer_cb (EV_A_ &w->timer, 0);
2745 }
2746 }
2747 }
2748}
2749
2750static void
2751infy_cb (EV_P_ ev_io *w, int revents)
2752{
2753 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf));
2757
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2760}
2761
2762inline_size void
2763check_2625 (EV_P)
2764{
2765 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */
2768 struct utsname buf;
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return;
2773
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1;
2783}
2784
2785inline_size void
2786infy_init (EV_P)
2787{
2788 if (fs_fd != -2)
2789 return;
2790
2791 fs_fd = -1;
2792
2793 check_2625 (EV_A);
2794
2795 fs_fd = inotify_init ();
2796
2797 if (fs_fd >= 0)
2798 {
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w);
2802 }
2803}
2804
2805inline_size void
2806infy_fork (EV_P)
2807{
2808 int slot;
2809
2810 if (fs_fd < 0)
2811 return;
2812
2813 close (fs_fd);
2814 fs_fd = inotify_init ();
2815
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2817 {
2818 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0;
2820
2821 while (w_)
2822 {
2823 ev_stat *w = (ev_stat *)w_;
2824 w_ = w_->next; /* lets us add this watcher */
2825
2826 w->wd = -1;
2827
2828 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else
2831 ev_timer_again (EV_A_ &w->timer);
2832 }
2833 }
2834}
2835
2836#endif
2837
2838#ifdef _WIN32
2839# define EV_LSTAT(p,b) _stati64 (p, b)
2840#else
2841# define EV_LSTAT(p,b) lstat (p, b)
2842#endif
1653 2843
1654void 2844void
1655ev_stat_stat (EV_P_ ev_stat *w) 2845ev_stat_stat (EV_P_ ev_stat *w)
1656{ 2846{
1657 if (lstat (w->path, &w->attr) < 0) 2847 if (lstat (w->path, &w->attr) < 0)
1658 w->attr.st_nlink = 0; 2848 w->attr.st_nlink = 0;
1659 else if (!w->attr.st_nlink) 2849 else if (!w->attr.st_nlink)
1660 w->attr.st_nlink = 1; 2850 w->attr.st_nlink = 1;
1661} 2851}
1662 2852
1663static void 2853static void noinline
1664stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2854stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1665{ 2855{
1666 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1667 2857
1668 /* we copy this here each the time so that */ 2858 /* we copy this here each the time so that */
1669 /* prev has the old value when the callback gets invoked */ 2859 /* prev has the old value when the callback gets invoked */
1670 w->prev = w->attr; 2860 w->prev = w->attr;
1671 ev_stat_stat (EV_A_ w); 2861 ev_stat_stat (EV_A_ w);
1672 2862
1673 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if (
2865 w->prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime
2876 ) {
2877 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0)
2879 {
2880 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w);
2882 ev_stat_stat (EV_A_ w); /* avoid race... */
2883 }
2884 #endif
2885
1674 ev_feed_event (EV_A_ w, EV_STAT); 2886 ev_feed_event (EV_A_ w, EV_STAT);
2887 }
1675} 2888}
1676 2889
1677void 2890void
1678ev_stat_start (EV_P_ ev_stat *w) 2891ev_stat_start (EV_P_ ev_stat *w)
1679{ 2892{
1680 if (expect_false (ev_is_active (w))) 2893 if (expect_false (ev_is_active (w)))
1681 return; 2894 return;
1682 2895
1683 /* since we use memcmp, we need to clear any padding data etc. */
1684 memset (&w->prev, 0, sizeof (ev_statdata));
1685 memset (&w->attr, 0, sizeof (ev_statdata));
1686
1687 ev_stat_stat (EV_A_ w); 2896 ev_stat_stat (EV_A_ w);
1688 2897
2898 if (w->interval < MIN_STAT_INTERVAL && w->interval)
1689 if (w->interval < MIN_STAT_INTERVAL) 2899 w->interval = MIN_STAT_INTERVAL;
1690 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1691 2900
1692 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2901 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1693 ev_set_priority (&w->timer, ev_priority (w)); 2902 ev_set_priority (&w->timer, ev_priority (w));
2903
2904#if EV_USE_INOTIFY
2905 infy_init (EV_A);
2906
2907 if (fs_fd >= 0)
2908 infy_add (EV_A_ w);
2909 else
2910#endif
1694 ev_timer_start (EV_A_ &w->timer); 2911 ev_timer_again (EV_A_ &w->timer);
1695 2912
1696 ev_start (EV_A_ (W)w, 1); 2913 ev_start (EV_A_ (W)w, 1);
2914
2915 EV_FREQUENT_CHECK;
1697} 2916}
1698 2917
1699void 2918void
1700ev_stat_stop (EV_P_ ev_stat *w) 2919ev_stat_stop (EV_P_ ev_stat *w)
1701{ 2920{
1702 ev_clear_pending (EV_A_ (W)w); 2921 clear_pending (EV_A_ (W)w);
1703 if (expect_false (!ev_is_active (w))) 2922 if (expect_false (!ev_is_active (w)))
1704 return; 2923 return;
1705 2924
2925 EV_FREQUENT_CHECK;
2926
2927#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w);
2929#endif
1706 ev_timer_stop (EV_A_ &w->timer); 2930 ev_timer_stop (EV_A_ &w->timer);
1707 2931
1708 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
1709}
1710#endif
1711 2933
2934 EV_FREQUENT_CHECK;
2935}
2936#endif
2937
2938#if EV_IDLE_ENABLE
1712void 2939void
1713ev_idle_start (EV_P_ ev_idle *w) 2940ev_idle_start (EV_P_ ev_idle *w)
1714{ 2941{
1715 if (expect_false (ev_is_active (w))) 2942 if (expect_false (ev_is_active (w)))
1716 return; 2943 return;
1717 2944
2945 pri_adjust (EV_A_ (W)w);
2946
2947 EV_FREQUENT_CHECK;
2948
2949 {
2950 int active = ++idlecnt [ABSPRI (w)];
2951
2952 ++idleall;
1718 ev_start (EV_A_ (W)w, ++idlecnt); 2953 ev_start (EV_A_ (W)w, active);
2954
1719 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2955 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1720 idles [idlecnt - 1] = w; 2956 idles [ABSPRI (w)][active - 1] = w;
2957 }
2958
2959 EV_FREQUENT_CHECK;
1721} 2960}
1722 2961
1723void 2962void
1724ev_idle_stop (EV_P_ ev_idle *w) 2963ev_idle_stop (EV_P_ ev_idle *w)
1725{ 2964{
1726 ev_clear_pending (EV_A_ (W)w); 2965 clear_pending (EV_A_ (W)w);
1727 if (expect_false (!ev_is_active (w))) 2966 if (expect_false (!ev_is_active (w)))
1728 return; 2967 return;
1729 2968
2969 EV_FREQUENT_CHECK;
2970
1730 { 2971 {
1731 int active = ((W)w)->active; 2972 int active = ev_active (w);
1732 idles [active - 1] = idles [--idlecnt]; 2973
1733 ((W)idles [active - 1])->active = active; 2974 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2975 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2976
2977 ev_stop (EV_A_ (W)w);
2978 --idleall;
1734 } 2979 }
1735 2980
1736 ev_stop (EV_A_ (W)w); 2981 EV_FREQUENT_CHECK;
1737} 2982}
2983#endif
1738 2984
1739void 2985void
1740ev_prepare_start (EV_P_ ev_prepare *w) 2986ev_prepare_start (EV_P_ ev_prepare *w)
1741{ 2987{
1742 if (expect_false (ev_is_active (w))) 2988 if (expect_false (ev_is_active (w)))
1743 return; 2989 return;
2990
2991 EV_FREQUENT_CHECK;
1744 2992
1745 ev_start (EV_A_ (W)w, ++preparecnt); 2993 ev_start (EV_A_ (W)w, ++preparecnt);
1746 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1747 prepares [preparecnt - 1] = w; 2995 prepares [preparecnt - 1] = w;
2996
2997 EV_FREQUENT_CHECK;
1748} 2998}
1749 2999
1750void 3000void
1751ev_prepare_stop (EV_P_ ev_prepare *w) 3001ev_prepare_stop (EV_P_ ev_prepare *w)
1752{ 3002{
1753 ev_clear_pending (EV_A_ (W)w); 3003 clear_pending (EV_A_ (W)w);
1754 if (expect_false (!ev_is_active (w))) 3004 if (expect_false (!ev_is_active (w)))
1755 return; 3005 return;
1756 3006
3007 EV_FREQUENT_CHECK;
3008
1757 { 3009 {
1758 int active = ((W)w)->active; 3010 int active = ev_active (w);
3011
1759 prepares [active - 1] = prepares [--preparecnt]; 3012 prepares [active - 1] = prepares [--preparecnt];
1760 ((W)prepares [active - 1])->active = active; 3013 ev_active (prepares [active - 1]) = active;
1761 } 3014 }
1762 3015
1763 ev_stop (EV_A_ (W)w); 3016 ev_stop (EV_A_ (W)w);
3017
3018 EV_FREQUENT_CHECK;
1764} 3019}
1765 3020
1766void 3021void
1767ev_check_start (EV_P_ ev_check *w) 3022ev_check_start (EV_P_ ev_check *w)
1768{ 3023{
1769 if (expect_false (ev_is_active (w))) 3024 if (expect_false (ev_is_active (w)))
1770 return; 3025 return;
3026
3027 EV_FREQUENT_CHECK;
1771 3028
1772 ev_start (EV_A_ (W)w, ++checkcnt); 3029 ev_start (EV_A_ (W)w, ++checkcnt);
1773 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1774 checks [checkcnt - 1] = w; 3031 checks [checkcnt - 1] = w;
3032
3033 EV_FREQUENT_CHECK;
1775} 3034}
1776 3035
1777void 3036void
1778ev_check_stop (EV_P_ ev_check *w) 3037ev_check_stop (EV_P_ ev_check *w)
1779{ 3038{
1780 ev_clear_pending (EV_A_ (W)w); 3039 clear_pending (EV_A_ (W)w);
1781 if (expect_false (!ev_is_active (w))) 3040 if (expect_false (!ev_is_active (w)))
1782 return; 3041 return;
1783 3042
3043 EV_FREQUENT_CHECK;
3044
1784 { 3045 {
1785 int active = ((W)w)->active; 3046 int active = ev_active (w);
3047
1786 checks [active - 1] = checks [--checkcnt]; 3048 checks [active - 1] = checks [--checkcnt];
1787 ((W)checks [active - 1])->active = active; 3049 ev_active (checks [active - 1]) = active;
1788 } 3050 }
1789 3051
1790 ev_stop (EV_A_ (W)w); 3052 ev_stop (EV_A_ (W)w);
3053
3054 EV_FREQUENT_CHECK;
1791} 3055}
1792 3056
1793#if EV_EMBED_ENABLE 3057#if EV_EMBED_ENABLE
1794void noinline 3058void noinline
1795ev_embed_sweep (EV_P_ ev_embed *w) 3059ev_embed_sweep (EV_P_ ev_embed *w)
1796{ 3060{
1797 ev_loop (w->loop, EVLOOP_NONBLOCK); 3061 ev_loop (w->other, EVLOOP_NONBLOCK);
1798} 3062}
1799 3063
1800static void 3064static void
1801embed_cb (EV_P_ ev_io *io, int revents) 3065embed_io_cb (EV_P_ ev_io *io, int revents)
1802{ 3066{
1803 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1804 3068
1805 if (ev_cb (w)) 3069 if (ev_cb (w))
1806 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3070 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1807 else 3071 else
1808 ev_embed_sweep (loop, w); 3072 ev_loop (w->other, EVLOOP_NONBLOCK);
1809} 3073}
3074
3075static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079
3080 {
3081 struct ev_loop *loop = w->other;
3082
3083 while (fdchangecnt)
3084 {
3085 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3087 }
3088 }
3089}
3090
3091static void
3092embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3093{
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095
3096 ev_embed_stop (EV_A_ w);
3097
3098 {
3099 struct ev_loop *loop = w->other;
3100
3101 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3103 }
3104
3105 ev_embed_start (EV_A_ w);
3106}
3107
3108#if 0
3109static void
3110embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3111{
3112 ev_idle_stop (EV_A_ idle);
3113}
3114#endif
1810 3115
1811void 3116void
1812ev_embed_start (EV_P_ ev_embed *w) 3117ev_embed_start (EV_P_ ev_embed *w)
1813{ 3118{
1814 if (expect_false (ev_is_active (w))) 3119 if (expect_false (ev_is_active (w)))
1815 return; 3120 return;
1816 3121
1817 { 3122 {
1818 struct ev_loop *loop = w->loop; 3123 struct ev_loop *loop = w->other;
1819 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1820 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1821 } 3126 }
3127
3128 EV_FREQUENT_CHECK;
1822 3129
1823 ev_set_priority (&w->io, ev_priority (w)); 3130 ev_set_priority (&w->io, ev_priority (w));
1824 ev_io_start (EV_A_ &w->io); 3131 ev_io_start (EV_A_ &w->io);
1825 3132
3133 ev_prepare_init (&w->prepare, embed_prepare_cb);
3134 ev_set_priority (&w->prepare, EV_MINPRI);
3135 ev_prepare_start (EV_A_ &w->prepare);
3136
3137 ev_fork_init (&w->fork, embed_fork_cb);
3138 ev_fork_start (EV_A_ &w->fork);
3139
3140 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3141
1826 ev_start (EV_A_ (W)w, 1); 3142 ev_start (EV_A_ (W)w, 1);
3143
3144 EV_FREQUENT_CHECK;
1827} 3145}
1828 3146
1829void 3147void
1830ev_embed_stop (EV_P_ ev_embed *w) 3148ev_embed_stop (EV_P_ ev_embed *w)
1831{ 3149{
1832 ev_clear_pending (EV_A_ (W)w); 3150 clear_pending (EV_A_ (W)w);
1833 if (expect_false (!ev_is_active (w))) 3151 if (expect_false (!ev_is_active (w)))
1834 return; 3152 return;
1835 3153
3154 EV_FREQUENT_CHECK;
3155
1836 ev_io_stop (EV_A_ &w->io); 3156 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork);
1837 3159
1838 ev_stop (EV_A_ (W)w); 3160 EV_FREQUENT_CHECK;
1839} 3161}
1840#endif 3162#endif
1841 3163
1842#if EV_FORK_ENABLE 3164#if EV_FORK_ENABLE
1843void 3165void
1844ev_fork_start (EV_P_ ev_fork *w) 3166ev_fork_start (EV_P_ ev_fork *w)
1845{ 3167{
1846 if (expect_false (ev_is_active (w))) 3168 if (expect_false (ev_is_active (w)))
1847 return; 3169 return;
3170
3171 EV_FREQUENT_CHECK;
1848 3172
1849 ev_start (EV_A_ (W)w, ++forkcnt); 3173 ev_start (EV_A_ (W)w, ++forkcnt);
1850 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3174 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
1851 forks [forkcnt - 1] = w; 3175 forks [forkcnt - 1] = w;
3176
3177 EV_FREQUENT_CHECK;
1852} 3178}
1853 3179
1854void 3180void
1855ev_fork_stop (EV_P_ ev_fork *w) 3181ev_fork_stop (EV_P_ ev_fork *w)
1856{ 3182{
1857 ev_clear_pending (EV_A_ (W)w); 3183 clear_pending (EV_A_ (W)w);
1858 if (expect_false (!ev_is_active (w))) 3184 if (expect_false (!ev_is_active (w)))
1859 return; 3185 return;
1860 3186
3187 EV_FREQUENT_CHECK;
3188
1861 { 3189 {
1862 int active = ((W)w)->active; 3190 int active = ev_active (w);
3191
1863 forks [active - 1] = forks [--forkcnt]; 3192 forks [active - 1] = forks [--forkcnt];
1864 ((W)forks [active - 1])->active = active; 3193 ev_active (forks [active - 1]) = active;
1865 } 3194 }
1866 3195
1867 ev_stop (EV_A_ (W)w); 3196 ev_stop (EV_A_ (W)w);
3197
3198 EV_FREQUENT_CHECK;
3199}
3200#endif
3201
3202#if EV_ASYNC_ENABLE
3203void
3204ev_async_start (EV_P_ ev_async *w)
3205{
3206 if (expect_false (ev_is_active (w)))
3207 return;
3208
3209 evpipe_init (EV_A);
3210
3211 EV_FREQUENT_CHECK;
3212
3213 ev_start (EV_A_ (W)w, ++asynccnt);
3214 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3215 asyncs [asynccnt - 1] = w;
3216
3217 EV_FREQUENT_CHECK;
3218}
3219
3220void
3221ev_async_stop (EV_P_ ev_async *w)
3222{
3223 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w)))
3225 return;
3226
3227 EV_FREQUENT_CHECK;
3228
3229 {
3230 int active = ev_active (w);
3231
3232 asyncs [active - 1] = asyncs [--asynccnt];
3233 ev_active (asyncs [active - 1]) = active;
3234 }
3235
3236 ev_stop (EV_A_ (W)w);
3237
3238 EV_FREQUENT_CHECK;
3239}
3240
3241void
3242ev_async_send (EV_P_ ev_async *w)
3243{
3244 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync);
1868} 3246}
1869#endif 3247#endif
1870 3248
1871/*****************************************************************************/ 3249/*****************************************************************************/
1872 3250
… …
1882once_cb (EV_P_ struct ev_once *once, int revents) 3260once_cb (EV_P_ struct ev_once *once, int revents)
1883{ 3261{
1884 void (*cb)(int revents, void *arg) = once->cb; 3262 void (*cb)(int revents, void *arg) = once->cb;
1885 void *arg = once->arg; 3263 void *arg = once->arg;
1886 3264
1887 ev_io_stop (EV_A_ &once->io); 3265 ev_io_stop (EV_A_ &once->io);
1888 ev_timer_stop (EV_A_ &once->to); 3266 ev_timer_stop (EV_A_ &once->to);
1889 ev_free (once); 3267 ev_free (once);
1890 3268
1891 cb (revents, arg); 3269 cb (revents, arg);
1892} 3270}
1893 3271
1894static void 3272static void
1895once_cb_io (EV_P_ ev_io *w, int revents) 3273once_cb_io (EV_P_ ev_io *w, int revents)
1896{ 3274{
1897 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3275 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3276
3277 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1898} 3278}
1899 3279
1900static void 3280static void
1901once_cb_to (EV_P_ ev_timer *w, int revents) 3281once_cb_to (EV_P_ ev_timer *w, int revents)
1902{ 3282{
1903 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3283 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3284
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1904} 3286}
1905 3287
1906void 3288void
1907ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1908{ 3290{
… …
1930 ev_timer_set (&once->to, timeout, 0.); 3312 ev_timer_set (&once->to, timeout, 0.);
1931 ev_timer_start (EV_A_ &once->to); 3313 ev_timer_start (EV_A_ &once->to);
1932 } 3314 }
1933} 3315}
1934 3316
3317/*****************************************************************************/
3318
3319#if EV_WALK_ENABLE
3320void
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3322{
3323 int i, j;
3324 ev_watcher_list *wl, *wn;
3325
3326 if (types & (EV_IO | EV_EMBED))
3327 for (i = 0; i < anfdmax; ++i)
3328 for (wl = anfds [i].head; wl; )
3329 {
3330 wn = wl->next;
3331
3332#if EV_EMBED_ENABLE
3333 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3334 {
3335 if (types & EV_EMBED)
3336 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3337 }
3338 else
3339#endif
3340#if EV_USE_INOTIFY
3341 if (ev_cb ((ev_io *)wl) == infy_cb)
3342 ;
3343 else
3344#endif
3345 if ((ev_io *)wl != &pipe_w)
3346 if (types & EV_IO)
3347 cb (EV_A_ EV_IO, wl);
3348
3349 wl = wn;
3350 }
3351
3352 if (types & (EV_TIMER | EV_STAT))
3353 for (i = timercnt + HEAP0; i-- > HEAP0; )
3354#if EV_STAT_ENABLE
3355 /*TODO: timer is not always active*/
3356 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3357 {
3358 if (types & EV_STAT)
3359 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3360 }
3361 else
3362#endif
3363 if (types & EV_TIMER)
3364 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3365
3366#if EV_PERIODIC_ENABLE
3367 if (types & EV_PERIODIC)
3368 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif
3371
3372#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; )
3375 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif
3378
3379#if EV_FORK_ENABLE
3380 if (types & EV_FORK)
3381 for (i = forkcnt; i--; )
3382 if (ev_cb (forks [i]) != embed_fork_cb)
3383 cb (EV_A_ EV_FORK, forks [i]);
3384#endif
3385
3386#if EV_ASYNC_ENABLE
3387 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif
3391
3392 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]);
3398
3399 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]);
3402
3403 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i)
3405 for (wl = signals [i].head; wl; )
3406 {
3407 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn;
3410 }
3411
3412 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; )
3414 for (wl = childs [i]; wl; )
3415 {
3416 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn;
3419 }
3420/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422}
3423#endif
3424
3425#if EV_MULTIPLICITY
3426 #include "ev_wrap.h"
3427#endif
3428
1935#ifdef __cplusplus 3429#ifdef __cplusplus
1936} 3430}
1937#endif 3431#endif
1938 3432

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