ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.249 by root, Wed May 21 23:30:52 2008 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 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */
31#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
32# include "config.h" 49# include "config.h"
50# endif
33 51
34# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
55# endif
56# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
37# endif 66# endif
38 67
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
41# endif 74# endif
42 75
43# if HAVE_POLL && HAVE_POLL_H 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
45# endif 82# endif
46 83
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
49# endif 90# endif
50 91
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
52# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
53# endif 98# endif
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
54 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
55#endif 132#endif
56 133
57#include <math.h> 134#include <math.h>
58#include <stdlib.h> 135#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 136#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 137#include <stddef.h>
63 138
64#include <stdio.h> 139#include <stdio.h>
65 140
66#include <assert.h> 141#include <assert.h>
67#include <errno.h> 142#include <errno.h>
68#include <sys/types.h> 143#include <sys/types.h>
144#include <time.h>
145
146#include <signal.h>
147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
69#ifndef WIN32 154#ifndef _WIN32
155# include <sys/time.h>
70# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
158#else
159# define WIN32_LEAN_AND_MEAN
160# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1
71#endif 163# endif
72#include <sys/time.h> 164#endif
73#include <time.h>
74 165
75/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
76 167
77#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
78# define EV_USE_MONOTONIC 1 169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
79#endif 178#endif
80 179
81#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
83#endif 182#endif
84 183
85#ifndef EV_USE_POLL 184#ifndef EV_USE_POLL
86# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
87#endif 190#endif
88 191
89#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
90# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
91#endif 198#endif
92 199
93#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
95#endif 202#endif
96 203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
97#ifndef EV_USE_WIN32 208#ifndef EV_USE_INOTIFY
98# ifdef WIN32 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
99# define EV_USE_WIN32 1 210# define EV_USE_INOTIFY 1
100# else 211# else
101# define EV_USE_WIN32 0 212# define EV_USE_INOTIFY 0
102# endif 213# endif
103#endif 214#endif
104 215
105#ifndef EV_USE_REALTIME 216#ifndef EV_PID_HASHSIZE
106# define EV_USE_REALTIME 1 217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
107#endif 221# endif
222#endif
108 223
109/**/ 224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240#if 0 /* debugging */
241# define EV_VERIFY 1
242# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1
244#endif
245
246#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL
248#endif
249
250#ifndef EV_HEAP_CACHE_AT
251# define EV_HEAP_CACHE_AT !EV_MINIMAL
252#endif
253
254/* this block fixes any misconfiguration where we know we run into trouble otherwise */
110 255
111#ifndef CLOCK_MONOTONIC 256#ifndef CLOCK_MONOTONIC
112# undef EV_USE_MONOTONIC 257# undef EV_USE_MONOTONIC
113# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
114#endif 259#endif
… …
116#ifndef CLOCK_REALTIME 261#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 262# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME 0
119#endif 264#endif
120 265
266#if !EV_STAT_ENABLE
267# undef EV_USE_INOTIFY
268# define EV_USE_INOTIFY 0
269#endif
270
271#if !EV_USE_NANOSLEEP
272# ifndef _WIN32
273# include <sys/select.h>
274# endif
275#endif
276
277#if EV_USE_INOTIFY
278# include <sys/inotify.h>
279#endif
280
281#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h>
283#endif
284
285#if EV_USE_EVENTFD
286/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287# include <stdint.h>
288# ifdef __cplusplus
289extern "C" {
290# endif
291int eventfd (unsigned int initval, int flags);
292# ifdef __cplusplus
293}
294# endif
295#endif
296
121/**/ 297/**/
122 298
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306#else
307# define EV_FREQUENT_CHECK do { } while (0)
308#endif
309
310/*
311 * This is used to avoid floating point rounding problems.
312 * It is added to ev_rt_now when scheduling periodics
313 * to ensure progress, time-wise, even when rounding
314 * errors are against us.
315 * This value is good at least till the year 4000.
316 * Better solutions welcome.
317 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
319
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 320#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 321#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127 323
128#include "ev.h"
129
130#if __GNUC__ >= 3 324#if __GNUC__ >= 4
131# define expect(expr,value) __builtin_expect ((expr),(value)) 325# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 326# define noinline __attribute__ ((noinline))
133#else 327#else
134# define expect(expr,value) (expr) 328# define expect(expr,value) (expr)
135# define inline static 329# define noinline
330# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
331# define inline
332# endif
136#endif 333#endif
137 334
138#define expect_false(expr) expect ((expr) != 0, 0) 335#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 336#define expect_true(expr) expect ((expr) != 0, 1)
337#define inline_size static inline
338
339#if EV_MINIMAL
340# define inline_speed static noinline
341#else
342# define inline_speed static inline
343#endif
140 344
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 347
348#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */
350
144typedef struct ev_watcher *W; 351typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 352typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 353typedef ev_watcher_time *WT;
147 354
355#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at
357
358#if EV_USE_MONOTONIC
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
362#endif
363
364#ifdef _WIN32
365# include "ev_win32.c"
366#endif
149 367
150/*****************************************************************************/ 368/*****************************************************************************/
151 369
370static void (*syserr_cb)(const char *msg);
371
372void
373ev_set_syserr_cb (void (*cb)(const char *msg))
374{
375 syserr_cb = cb;
376}
377
378static void noinline
379syserr (const char *msg)
380{
381 if (!msg)
382 msg = "(libev) system error";
383
384 if (syserr_cb)
385 syserr_cb (msg);
386 else
387 {
388 perror (msg);
389 abort ();
390 }
391}
392
393static void *
394ev_realloc_emul (void *ptr, long size)
395{
396 /* some systems, notably openbsd and darwin, fail to properly
397 * implement realloc (x, 0) (as required by both ansi c-98 and
398 * the single unix specification, so work around them here.
399 */
400
401 if (size)
402 return realloc (ptr, size);
403
404 free (ptr);
405 return 0;
406}
407
408static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
409
410void
411ev_set_allocator (void *(*cb)(void *ptr, long size))
412{
413 alloc = cb;
414}
415
416inline_speed void *
417ev_realloc (void *ptr, long size)
418{
419 ptr = alloc (ptr, size);
420
421 if (!ptr && size)
422 {
423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
424 abort ();
425 }
426
427 return ptr;
428}
429
430#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0)
432
433/*****************************************************************************/
434
152typedef struct 435typedef struct
153{ 436{
154 struct ev_watcher_list *head; 437 WL head;
155 unsigned char events; 438 unsigned char events;
156 unsigned char reify; 439 unsigned char reify;
440#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle;
442#endif
157} ANFD; 443} ANFD;
158 444
159typedef struct 445typedef struct
160{ 446{
161 W w; 447 W w;
162 int events; 448 int events;
163} ANPENDING; 449} ANPENDING;
164 450
451#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */
453typedef struct
454{
455 WL head;
456} ANFS;
457#endif
458
459/* Heap Entry */
460#if EV_HEAP_CACHE_AT
461 typedef struct {
462 ev_tstamp at;
463 WT w;
464 } ANHE;
465
466 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else
470 typedef WT ANHE;
471
472 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he)
475#endif
476
165#if EV_MULTIPLICITY 477#if EV_MULTIPLICITY
166 478
167struct ev_loop 479 struct ev_loop
168{ 480 {
481 ev_tstamp ev_rt_now;
482 #define ev_rt_now ((loop)->ev_rt_now)
169# define VAR(name,decl) decl; 483 #define VAR(name,decl) decl;
170# include "ev_vars.h" 484 #include "ev_vars.h"
171};
172# undef VAR 485 #undef VAR
486 };
173# include "ev_wrap.h" 487 #include "ev_wrap.h"
488
489 static struct ev_loop default_loop_struct;
490 struct ev_loop *ev_default_loop_ptr;
174 491
175#else 492#else
176 493
494 ev_tstamp ev_rt_now;
177# define VAR(name,decl) static decl; 495 #define VAR(name,decl) static decl;
178# include "ev_vars.h" 496 #include "ev_vars.h"
179# undef VAR 497 #undef VAR
498
499 static int ev_default_loop_ptr;
180 500
181#endif 501#endif
182 502
183/*****************************************************************************/ 503/*****************************************************************************/
184 504
185inline ev_tstamp 505ev_tstamp
186ev_time (void) 506ev_time (void)
187{ 507{
188#if EV_USE_REALTIME 508#if EV_USE_REALTIME
189 struct timespec ts; 509 struct timespec ts;
190 clock_gettime (CLOCK_REALTIME, &ts); 510 clock_gettime (CLOCK_REALTIME, &ts);
… …
194 gettimeofday (&tv, 0); 514 gettimeofday (&tv, 0);
195 return tv.tv_sec + tv.tv_usec * 1e-6; 515 return tv.tv_sec + tv.tv_usec * 1e-6;
196#endif 516#endif
197} 517}
198 518
199inline ev_tstamp 519ev_tstamp inline_size
200get_clock (void) 520get_clock (void)
201{ 521{
202#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
203 if (expect_true (have_monotonic)) 523 if (expect_true (have_monotonic))
204 { 524 {
… …
209#endif 529#endif
210 530
211 return ev_time (); 531 return ev_time ();
212} 532}
213 533
534#if EV_MULTIPLICITY
214ev_tstamp 535ev_tstamp
215ev_now (EV_P) 536ev_now (EV_P)
216{ 537{
217 return rt_now; 538 return ev_rt_now;
218} 539}
540#endif
219 541
220#define array_roundsize(base,n) ((n) | 4 & ~3) 542void
221 543ev_sleep (ev_tstamp delay)
222#define array_needsize(base,cur,cnt,init) \ 544{
223 if (expect_false ((cnt) > cur)) \ 545 if (delay > 0.)
224 { \
225 int newcnt = cur; \
226 do \
227 { \
228 newcnt = array_roundsize (base, newcnt << 1); \
229 } \
230 while ((cnt) > newcnt); \
231 \
232 base = realloc (base, sizeof (*base) * (newcnt)); \
233 init (base + cur, newcnt - cur); \
234 cur = newcnt; \
235 } 546 {
547#if EV_USE_NANOSLEEP
548 struct timespec ts;
549
550 ts.tv_sec = (time_t)delay;
551 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
552
553 nanosleep (&ts, 0);
554#elif defined(_WIN32)
555 Sleep ((unsigned long)(delay * 1e3));
556#else
557 struct timeval tv;
558
559 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561
562 select (0, 0, 0, 0, &tv);
563#endif
564 }
565}
236 566
237/*****************************************************************************/ 567/*****************************************************************************/
238 568
239static void 569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570
571int inline_size
572array_nextsize (int elem, int cur, int cnt)
573{
574 int ncur = cur + 1;
575
576 do
577 ncur <<= 1;
578 while (cnt > ncur);
579
580 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
581 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
582 {
583 ncur *= elem;
584 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
585 ncur = ncur - sizeof (void *) * 4;
586 ncur /= elem;
587 }
588
589 return ncur;
590}
591
592static noinline void *
593array_realloc (int elem, void *base, int *cur, int cnt)
594{
595 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur);
597}
598
599#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \
601 { \
602 int ocur_ = (cur); \
603 (base) = (type *)array_realloc \
604 (sizeof (type), (base), &(cur), (cnt)); \
605 init ((base) + (ocur_), (cur) - ocur_); \
606 }
607
608#if 0
609#define array_slim(type,stem) \
610 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
611 { \
612 stem ## max = array_roundsize (stem ## cnt >> 1); \
613 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 }
616#endif
617
618#define array_free(stem, idx) \
619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
620
621/*****************************************************************************/
622
623void noinline
624ev_feed_event (EV_P_ void *w, int revents)
625{
626 W w_ = (W)w;
627 int pri = ABSPRI (w_);
628
629 if (expect_false (w_->pending))
630 pendings [pri][w_->pending - 1].events |= revents;
631 else
632 {
633 w_->pending = ++pendingcnt [pri];
634 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
635 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents;
637 }
638}
639
640void inline_speed
641queue_events (EV_P_ W *events, int eventcnt, int type)
642{
643 int i;
644
645 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type);
647}
648
649/*****************************************************************************/
650
651void inline_size
240anfds_init (ANFD *base, int count) 652anfds_init (ANFD *base, int count)
241{ 653{
242 while (count--) 654 while (count--)
243 { 655 {
244 base->head = 0; 656 base->head = 0;
… …
247 659
248 ++base; 660 ++base;
249 } 661 }
250} 662}
251 663
252static void 664void inline_speed
253event (EV_P_ W w, int events)
254{
255 if (w->pending)
256 {
257 pendings [ABSPRI (w)][w->pending - 1].events |= events;
258 return;
259 }
260
261 w->pending = ++pendingcnt [ABSPRI (w)];
262 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263 pendings [ABSPRI (w)][w->pending - 1].w = w;
264 pendings [ABSPRI (w)][w->pending - 1].events = events;
265}
266
267static void
268queue_events (EV_P_ W *events, int eventcnt, int type)
269{
270 int i;
271
272 for (i = 0; i < eventcnt; ++i)
273 event (EV_A_ events [i], type);
274}
275
276static void
277fd_event (EV_P_ int fd, int events) 665fd_event (EV_P_ int fd, int revents)
278{ 666{
279 ANFD *anfd = anfds + fd; 667 ANFD *anfd = anfds + fd;
280 struct ev_io *w; 668 ev_io *w;
281 669
282 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 670 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
283 { 671 {
284 int ev = w->events & events; 672 int ev = w->events & revents;
285 673
286 if (ev) 674 if (ev)
287 event (EV_A_ (W)w, ev); 675 ev_feed_event (EV_A_ (W)w, ev);
288 } 676 }
289} 677}
290 678
291/*****************************************************************************/ 679void
680ev_feed_fd_event (EV_P_ int fd, int revents)
681{
682 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents);
684}
292 685
293static void 686void inline_size
294fd_reify (EV_P) 687fd_reify (EV_P)
295{ 688{
296 int i; 689 int i;
297 690
298 for (i = 0; i < fdchangecnt; ++i) 691 for (i = 0; i < fdchangecnt; ++i)
299 { 692 {
300 int fd = fdchanges [i]; 693 int fd = fdchanges [i];
301 ANFD *anfd = anfds + fd; 694 ANFD *anfd = anfds + fd;
302 struct ev_io *w; 695 ev_io *w;
303 696
304 int events = 0; 697 unsigned char events = 0;
305 698
306 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 699 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
307 events |= w->events; 700 events |= (unsigned char)w->events;
308 701
702#if EV_SELECT_IS_WINSOCKET
703 if (events)
704 {
705 unsigned long argp;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
709 anfd->handle = _get_osfhandle (fd);
710 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
712 }
713#endif
714
715 {
716 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify;
718
309 anfd->reify = 0; 719 anfd->reify = 0;
310
311 method_modify (EV_A_ fd, anfd->events, events);
312 anfd->events = events; 720 anfd->events = events;
721
722 if (o_events != events || o_reify & EV_IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events);
724 }
313 } 725 }
314 726
315 fdchangecnt = 0; 727 fdchangecnt = 0;
316} 728}
317 729
318static void 730void inline_size
319fd_change (EV_P_ int fd) 731fd_change (EV_P_ int fd, int flags)
320{ 732{
321 if (anfds [fd].reify || fdchangecnt < 0) 733 unsigned char reify = anfds [fd].reify;
322 return;
323
324 anfds [fd].reify = 1; 734 anfds [fd].reify |= flags;
325 735
736 if (expect_true (!reify))
737 {
326 ++fdchangecnt; 738 ++fdchangecnt;
327 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
328 fdchanges [fdchangecnt - 1] = fd; 740 fdchanges [fdchangecnt - 1] = fd;
741 }
329} 742}
330 743
331static void 744void inline_speed
332fd_kill (EV_P_ int fd) 745fd_kill (EV_P_ int fd)
333{ 746{
334 struct ev_io *w; 747 ev_io *w;
335 748
336 while ((w = (struct ev_io *)anfds [fd].head)) 749 while ((w = (ev_io *)anfds [fd].head))
337 { 750 {
338 ev_io_stop (EV_A_ w); 751 ev_io_stop (EV_A_ w);
339 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
340 } 753 }
754}
755
756int inline_size
757fd_valid (int fd)
758{
759#ifdef _WIN32
760 return _get_osfhandle (fd) != -1;
761#else
762 return fcntl (fd, F_GETFD) != -1;
763#endif
341} 764}
342 765
343/* called on EBADF to verify fds */ 766/* called on EBADF to verify fds */
344static void 767static void noinline
345fd_ebadf (EV_P) 768fd_ebadf (EV_P)
346{ 769{
347 int fd; 770 int fd;
348 771
349 for (fd = 0; fd < anfdmax; ++fd) 772 for (fd = 0; fd < anfdmax; ++fd)
350 if (anfds [fd].events) 773 if (anfds [fd].events)
351 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 774 if (!fd_valid (fd) == -1 && errno == EBADF)
352 fd_kill (EV_A_ fd); 775 fd_kill (EV_A_ fd);
353} 776}
354 777
355/* called on ENOMEM in select/poll to kill some fds and retry */ 778/* called on ENOMEM in select/poll to kill some fds and retry */
356static void 779static void noinline
357fd_enomem (EV_P) 780fd_enomem (EV_P)
358{ 781{
359 int fd; 782 int fd;
360 783
361 for (fd = anfdmax; fd--; ) 784 for (fd = anfdmax; fd--; )
362 if (anfds [fd].events) 785 if (anfds [fd].events)
363 { 786 {
364 close (fd);
365 fd_kill (EV_A_ fd); 787 fd_kill (EV_A_ fd);
366 return; 788 return;
367 } 789 }
368} 790}
369 791
370/* susually called after fork if method needs to re-arm all fds from scratch */ 792/* usually called after fork if backend needs to re-arm all fds from scratch */
371static void 793static void noinline
372fd_rearm_all (EV_P) 794fd_rearm_all (EV_P)
373{ 795{
374 int fd; 796 int fd;
375 797
376 /* this should be highly optimised to not do anything but set a flag */
377 for (fd = 0; fd < anfdmax; ++fd) 798 for (fd = 0; fd < anfdmax; ++fd)
378 if (anfds [fd].events) 799 if (anfds [fd].events)
379 { 800 {
380 anfds [fd].events = 0; 801 anfds [fd].events = 0;
381 fd_change (EV_A_ fd); 802 fd_change (EV_A_ fd, EV_IOFDSET | 1);
382 } 803 }
383} 804}
384 805
385/*****************************************************************************/ 806/*****************************************************************************/
386 807
808/*
809 * the heap functions want a real array index. array index 0 uis guaranteed to not
810 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
811 * the branching factor of the d-tree.
812 */
813
814/*
815 * at the moment we allow libev the luxury of two heaps,
816 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
817 * which is more cache-efficient.
818 * the difference is about 5% with 50000+ watchers.
819 */
820#if EV_USE_4HEAP
821
822#define DHEAP 4
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k))
826
827/* away from the root */
828void inline_speed
829downheap (ANHE *heap, int N, int k)
830{
831 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0;
833
834 for (;;)
835 {
836 ev_tstamp minat;
837 ANHE *minpos;
838 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
839
840 /* find minimum child */
841 if (expect_true (pos + DHEAP - 1 < E))
842 {
843 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
846 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
847 }
848 else if (pos < E)
849 {
850 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
851 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
852 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
853 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
854 }
855 else
856 break;
857
858 if (ANHE_at (he) <= minat)
859 break;
860
861 heap [k] = *minpos;
862 ev_active (ANHE_w (*minpos)) = k;
863
864 k = minpos - heap;
865 }
866
867 heap [k] = he;
868 ev_active (ANHE_w (he)) = k;
869}
870
871#else /* 4HEAP */
872
873#define HEAP0 1
874#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p))
876
877/* away from the root */
878void inline_speed
879downheap (ANHE *heap, int N, int k)
880{
881 ANHE he = heap [k];
882
883 for (;;)
884 {
885 int c = k << 1;
886
887 if (c > N + HEAP0 - 1)
888 break;
889
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0;
892
893 if (ANHE_at (he) <= ANHE_at (heap [c]))
894 break;
895
896 heap [k] = heap [c];
897 ev_active (ANHE_w (heap [k])) = k;
898
899 k = c;
900 }
901
902 heap [k] = he;
903 ev_active (ANHE_w (he)) = k;
904}
905#endif
906
907/* towards the root */
908void inline_speed
909upheap (ANHE *heap, int k)
910{
911 ANHE he = heap [k];
912
913 for (;;)
914 {
915 int p = HPARENT (k);
916
917 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
918 break;
919
920 heap [k] = heap [p];
921 ev_active (ANHE_w (heap [k])) = k;
922 k = p;
923 }
924
925 heap [k] = he;
926 ev_active (ANHE_w (he)) = k;
927}
928
929void inline_size
930adjustheap (ANHE *heap, int N, int k)
931{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
933 upheap (heap, k);
934 else
935 downheap (heap, N, k);
936}
937
938/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size
940reheap (ANHE *heap, int N)
941{
942 int i;
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0);
947}
948
949#if EV_VERIFY
387static void 950static void
388upheap (WT *heap, int k) 951checkheap (ANHE *heap, int N)
389{ 952{
390 WT w = heap [k]; 953 int i;
391 954
392 while (k && heap [k >> 1]->at > w->at) 955 for (i = HEAP0; i < N + HEAP0; ++i)
393 {
394 heap [k] = heap [k >> 1];
395 ((W)heap [k])->active = k + 1;
396 k >>= 1;
397 } 956 {
398 957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
399 heap [k] = w; 958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
400 ((W)heap [k])->active = k + 1; 959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
401
402}
403
404static void
405downheap (WT *heap, int N, int k)
406{
407 WT w = heap [k];
408
409 while (k < (N >> 1))
410 { 960 }
411 int j = k << 1;
412
413 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
414 ++j;
415
416 if (w->at <= heap [j]->at)
417 break;
418
419 heap [k] = heap [j];
420 ((W)heap [k])->active = k + 1;
421 k = j;
422 }
423
424 heap [k] = w;
425 ((W)heap [k])->active = k + 1;
426} 961}
962#endif
427 963
428/*****************************************************************************/ 964/*****************************************************************************/
429 965
430typedef struct 966typedef struct
431{ 967{
432 struct ev_watcher_list *head; 968 WL head;
433 sig_atomic_t volatile gotsig; 969 EV_ATOMIC_T gotsig;
434} ANSIG; 970} ANSIG;
435 971
436static ANSIG *signals; 972static ANSIG *signals;
437static int signalmax; 973static int signalmax;
438 974
439static int sigpipe [2]; 975static EV_ATOMIC_T gotsig;
440static sig_atomic_t volatile gotsig;
441static struct ev_io sigev;
442 976
443static void 977void inline_size
444signals_init (ANSIG *base, int count) 978signals_init (ANSIG *base, int count)
445{ 979{
446 while (count--) 980 while (count--)
447 { 981 {
448 base->head = 0; 982 base->head = 0;
… …
450 984
451 ++base; 985 ++base;
452 } 986 }
453} 987}
454 988
989/*****************************************************************************/
990
991void inline_speed
992fd_intern (int fd)
993{
994#ifdef _WIN32
995 int arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif
1001}
1002
1003static void noinline
1004evpipe_init (EV_P)
1005{
1006 if (!ev_is_active (&pipeev))
1007 {
1008#if EV_USE_EVENTFD
1009 if ((evfd = eventfd (0, 0)) >= 0)
1010 {
1011 evpipe [0] = -1;
1012 fd_intern (evfd);
1013 ev_io_set (&pipeev, evfd, EV_READ);
1014 }
1015 else
1016#endif
1017 {
1018 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe");
1020
1021 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ);
1024 }
1025
1026 ev_io_start (EV_A_ &pipeev);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 }
1029}
1030
1031void inline_size
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{
1034 if (!*flag)
1035 {
1036 int old_errno = errno; /* save errno because write might clobber it */
1037
1038 *flag = 1;
1039
1040#if EV_USE_EVENTFD
1041 if (evfd >= 0)
1042 {
1043 uint64_t counter = 1;
1044 write (evfd, &counter, sizeof (uint64_t));
1045 }
1046 else
1047#endif
1048 write (evpipe [1], &old_errno, 1);
1049
1050 errno = old_errno;
1051 }
1052}
1053
455static void 1054static void
1055pipecb (EV_P_ ev_io *iow, int revents)
1056{
1057#if EV_USE_EVENTFD
1058 if (evfd >= 0)
1059 {
1060 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t));
1062 }
1063 else
1064#endif
1065 {
1066 char dummy;
1067 read (evpipe [0], &dummy, 1);
1068 }
1069
1070 if (gotsig && ev_is_default_loop (EV_A))
1071 {
1072 int signum;
1073 gotsig = 0;
1074
1075 for (signum = signalmax; signum--; )
1076 if (signals [signum].gotsig)
1077 ev_feed_signal_event (EV_A_ signum + 1);
1078 }
1079
1080#if EV_ASYNC_ENABLE
1081 if (gotasync)
1082 {
1083 int i;
1084 gotasync = 0;
1085
1086 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent)
1088 {
1089 asyncs [i]->sent = 0;
1090 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1091 }
1092 }
1093#endif
1094}
1095
1096/*****************************************************************************/
1097
1098static void
456sighandler (int signum) 1099ev_sighandler (int signum)
457{ 1100{
1101#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct;
1103#endif
1104
1105#if _WIN32
1106 signal (signum, ev_sighandler);
1107#endif
1108
458 signals [signum - 1].gotsig = 1; 1109 signals [signum - 1].gotsig = 1;
459 1110 evpipe_write (EV_A_ &gotsig);
460 if (!gotsig)
461 {
462 int old_errno = errno;
463 gotsig = 1;
464 write (sigpipe [1], &signum, 1);
465 errno = old_errno;
466 }
467} 1111}
468 1112
469static void 1113void noinline
470sigcb (EV_P_ struct ev_io *iow, int revents) 1114ev_feed_signal_event (EV_P_ int signum)
471{ 1115{
472 struct ev_watcher_list *w; 1116 WL w;
1117
1118#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120#endif
1121
473 int signum; 1122 --signum;
474 1123
475 read (sigpipe [0], &revents, 1); 1124 if (signum < 0 || signum >= signalmax)
476 gotsig = 0; 1125 return;
477 1126
478 for (signum = signalmax; signum--; )
479 if (signals [signum].gotsig)
480 {
481 signals [signum].gotsig = 0; 1127 signals [signum].gotsig = 0;
482 1128
483 for (w = signals [signum].head; w; w = w->next) 1129 for (w = signals [signum].head; w; w = w->next)
484 event (EV_A_ (W)w, EV_SIGNAL); 1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
485 }
486}
487
488static void
489siginit (EV_P)
490{
491#ifndef WIN32
492 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
493 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
494
495 /* rather than sort out wether we really need nb, set it */
496 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
497 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
498#endif
499
500 ev_io_set (&sigev, sigpipe [0], EV_READ);
501 ev_io_start (EV_A_ &sigev);
502 ev_unref (EV_A); /* child watcher should not keep loop alive */
503} 1131}
504 1132
505/*****************************************************************************/ 1133/*****************************************************************************/
506 1134
1135static WL childs [EV_PID_HASHSIZE];
1136
507#ifndef WIN32 1137#ifndef _WIN32
508 1138
509static struct ev_child *childs [PID_HASHSIZE];
510static struct ev_signal childev; 1139static ev_signal childev;
1140
1141#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0
1143#endif
1144
1145void inline_speed
1146child_reap (EV_P_ int chain, int pid, int status)
1147{
1148 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150
1151 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1152 {
1153 if ((w->pid == pid || !w->pid)
1154 && (!traced || (w->flags & 1)))
1155 {
1156 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1157 w->rpid = pid;
1158 w->rstatus = status;
1159 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1160 }
1161 }
1162}
511 1163
512#ifndef WCONTINUED 1164#ifndef WCONTINUED
513# define WCONTINUED 0 1165# define WCONTINUED 0
514#endif 1166#endif
515 1167
516static void 1168static void
517child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
518{
519 struct ev_child *w;
520
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid)
523 {
524 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525 w->rpid = pid;
526 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD);
528 }
529}
530
531static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 1169childcb (EV_P_ ev_signal *sw, int revents)
533{ 1170{
534 int pid, status; 1171 int pid, status;
535 1172
1173 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1174 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 1175 if (!WCONTINUED
1176 || errno != EINVAL
1177 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1178 return;
1179
538 /* make sure we are called again until all childs have been reaped */ 1180 /* make sure we are called again until all children have been reaped */
1181 /* we need to do it this way so that the callback gets called before we continue */
539 event (EV_A_ (W)sw, EV_SIGNAL); 1182 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 1183
541 child_reap (EV_A_ sw, pid, pid, status); 1184 child_reap (EV_A_ pid, pid, status);
1185 if (EV_PID_HASHSIZE > 1)
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1186 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
543 }
544} 1187}
545 1188
546#endif 1189#endif
547 1190
548/*****************************************************************************/ 1191/*****************************************************************************/
549 1192
1193#if EV_USE_PORT
1194# include "ev_port.c"
1195#endif
550#if EV_USE_KQUEUE 1196#if EV_USE_KQUEUE
551# include "ev_kqueue.c" 1197# include "ev_kqueue.c"
552#endif 1198#endif
553#if EV_USE_EPOLL 1199#if EV_USE_EPOLL
554# include "ev_epoll.c" 1200# include "ev_epoll.c"
… …
571{ 1217{
572 return EV_VERSION_MINOR; 1218 return EV_VERSION_MINOR;
573} 1219}
574 1220
575/* return true if we are running with elevated privileges and should ignore env variables */ 1221/* return true if we are running with elevated privileges and should ignore env variables */
576static int 1222int inline_size
577enable_secure (void) 1223enable_secure (void)
578{ 1224{
579#ifdef WIN32 1225#ifdef _WIN32
580 return 0; 1226 return 0;
581#else 1227#else
582 return getuid () != geteuid () 1228 return getuid () != geteuid ()
583 || getgid () != getegid (); 1229 || getgid () != getegid ();
584#endif 1230#endif
585} 1231}
586 1232
587int 1233unsigned int
588ev_method (EV_P) 1234ev_supported_backends (void)
589{ 1235{
590 return method; 1236 unsigned int flags = 0;
591}
592 1237
593static void 1238 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594loop_init (EV_P_ int methods) 1239 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1240 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1241 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1242 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1243
1244 return flags;
1245}
1246
1247unsigned int
1248ev_recommended_backends (void)
595{ 1249{
596 if (!method) 1250 unsigned int flags = ev_supported_backends ();
1251
1252#ifndef __NetBSD__
1253 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE;
1256#endif
1257#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation
1259 flags &= ~EVBACKEND_POLL;
1260#endif
1261
1262 return flags;
1263}
1264
1265unsigned int
1266ev_embeddable_backends (void)
1267{
1268 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1269
1270 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1271 /* please fix it and tell me how to detect the fix */
1272 flags &= ~EVBACKEND_EPOLL;
1273
1274 return flags;
1275}
1276
1277unsigned int
1278ev_backend (EV_P)
1279{
1280 return backend;
1281}
1282
1283unsigned int
1284ev_loop_count (EV_P)
1285{
1286 return loop_count;
1287}
1288
1289void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{
1292 io_blocktime = interval;
1293}
1294
1295void
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{
1298 timeout_blocktime = interval;
1299}
1300
1301static void noinline
1302loop_init (EV_P_ unsigned int flags)
1303{
1304 if (!backend)
597 { 1305 {
598#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
599 { 1307 {
600 struct timespec ts; 1308 struct timespec ts;
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 1310 have_monotonic = 1;
603 } 1311 }
604#endif 1312#endif
605 1313
606 rt_now = ev_time (); 1314 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 1315 mn_now = get_clock ();
608 now_floor = mn_now; 1316 now_floor = mn_now;
609 rtmn_diff = rt_now - mn_now; 1317 rtmn_diff = ev_rt_now - mn_now;
610 1318
611 if (methods == EVMETHOD_AUTO) 1319 io_blocktime = 0.;
612 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1320 timeout_blocktime = 0.;
1321 backend = 0;
1322 backend_fd = -1;
1323 gotasync = 0;
1324#if EV_USE_INOTIFY
1325 fs_fd = -2;
1326#endif
1327
1328 /* pid check not overridable via env */
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif
1333
1334 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS"))
613 methods = atoi (getenv ("LIBEV_METHODS")); 1337 flags = atoi (getenv ("LIBEV_FLAGS"));
614 else
615 methods = EVMETHOD_ANY;
616 1338
617 method = 0; 1339 if (!(flags & 0x0000ffffU))
618#if EV_USE_WIN32 1340 flags |= ev_recommended_backends ();
619 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1341
1342#if EV_USE_PORT
1343 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
620#endif 1344#endif
621#if EV_USE_KQUEUE 1345#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1346 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623#endif 1347#endif
624#if EV_USE_EPOLL 1348#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1349 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626#endif 1350#endif
627#if EV_USE_POLL 1351#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1352 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629#endif 1353#endif
630#if EV_USE_SELECT 1354#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632#endif 1356#endif
633 }
634}
635 1357
636void 1358 ev_init (&pipeev, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI);
1360 }
1361}
1362
1363static void noinline
637loop_destroy (EV_P) 1364loop_destroy (EV_P)
638{ 1365{
1366 int i;
1367
1368 if (ev_is_active (&pipeev))
1369 {
1370 ev_ref (EV_A); /* signal watcher */
1371 ev_io_stop (EV_A_ &pipeev);
1372
1373#if EV_USE_EVENTFD
1374 if (evfd >= 0)
1375 close (evfd);
1376#endif
1377
1378 if (evpipe [0] >= 0)
1379 {
1380 close (evpipe [0]);
1381 close (evpipe [1]);
1382 }
1383 }
1384
639#if EV_USE_WIN32 1385#if EV_USE_INOTIFY
640 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1386 if (fs_fd >= 0)
1387 close (fs_fd);
1388#endif
1389
1390 if (backend_fd >= 0)
1391 close (backend_fd);
1392
1393#if EV_USE_PORT
1394 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
641#endif 1395#endif
642#if EV_USE_KQUEUE 1396#if EV_USE_KQUEUE
643 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1397 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
644#endif 1398#endif
645#if EV_USE_EPOLL 1399#if EV_USE_EPOLL
646 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1400 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
647#endif 1401#endif
648#if EV_USE_POLL 1402#if EV_USE_POLL
649 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1403 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
650#endif 1404#endif
651#if EV_USE_SELECT 1405#if EV_USE_SELECT
652 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1406 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
653#endif 1407#endif
654 1408
655 method = 0; 1409 for (i = NUMPRI; i--; )
656 /*TODO*/ 1410 {
657} 1411 array_free (pending, [i]);
1412#if EV_IDLE_ENABLE
1413 array_free (idle, [i]);
1414#endif
1415 }
658 1416
659void 1417 ev_free (anfds); anfdmax = 0;
1418
1419 /* have to use the microsoft-never-gets-it-right macro */
1420 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY);
1424#endif
1425#if EV_FORK_ENABLE
1426 array_free (fork, EMPTY);
1427#endif
1428 array_free (prepare, EMPTY);
1429 array_free (check, EMPTY);
1430#if EV_ASYNC_ENABLE
1431 array_free (async, EMPTY);
1432#endif
1433
1434 backend = 0;
1435}
1436
1437#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P);
1439#endif
1440
1441void inline_size
660loop_fork (EV_P) 1442loop_fork (EV_P)
661{ 1443{
662 /*TODO*/ 1444#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif
1447#if EV_USE_KQUEUE
1448 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1449#endif
663#if EV_USE_EPOLL 1450#if EV_USE_EPOLL
664 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1451 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
665#endif 1452#endif
666#if EV_USE_KQUEUE 1453#if EV_USE_INOTIFY
667 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1454 infy_fork (EV_A);
668#endif 1455#endif
1456
1457 if (ev_is_active (&pipeev))
1458 {
1459 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */
1461 gotsig = 1;
1462#if EV_ASYNC_ENABLE
1463 gotasync = 1;
1464#endif
1465
1466 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev);
1468
1469#if EV_USE_EVENTFD
1470 if (evfd >= 0)
1471 close (evfd);
1472#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1479
1480 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ);
1483 }
1484
1485 postfork = 0;
669} 1486}
670 1487
671#if EV_MULTIPLICITY 1488#if EV_MULTIPLICITY
672struct ev_loop * 1489struct ev_loop *
673ev_loop_new (int methods) 1490ev_loop_new (unsigned int flags)
674{ 1491{
675 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
676 1493
1494 memset (loop, 0, sizeof (struct ev_loop));
1495
677 loop_init (EV_A_ methods); 1496 loop_init (EV_A_ flags);
678 1497
679 if (ev_method (EV_A)) 1498 if (ev_backend (EV_A))
680 return loop; 1499 return loop;
681 1500
682 return 0; 1501 return 0;
683} 1502}
684 1503
685void 1504void
686ev_loop_destroy (EV_P) 1505ev_loop_destroy (EV_P)
687{ 1506{
688 loop_destroy (EV_A); 1507 loop_destroy (EV_A);
689 free (loop); 1508 ev_free (loop);
690} 1509}
691 1510
692void 1511void
693ev_loop_fork (EV_P) 1512ev_loop_fork (EV_P)
694{ 1513{
695 loop_fork (EV_A); 1514 postfork = 1; /* must be in line with ev_default_fork */
696} 1515}
1516
1517#if EV_VERIFY
1518static void
1519array_check (W **ws, int cnt)
1520{
1521 while (cnt--)
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1523}
1524
1525static void
1526ev_loop_verify (EV_P)
1527{
1528 int i;
1529
1530 checkheap (timers, timercnt);
1531#if EV_PERIODIC_ENABLE
1532 checkheap (periodics, periodiccnt);
1533#endif
1534
1535#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; )
1537 array_check ((W **)idles [i], idlecnt [i]);
1538#endif
1539#if EV_FORK_ENABLE
1540 array_check ((W **)forks, forkcnt);
1541#endif
1542 array_check ((W **)prepares, preparecnt);
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE
1545 array_check ((W **)asyncs, asynccnt);
1546#endif
1547}
1548#endif
697 1549
698#endif 1550#endif
699 1551
700#if EV_MULTIPLICITY 1552#if EV_MULTIPLICITY
701struct ev_loop default_loop_struct;
702static struct ev_loop *default_loop;
703
704struct ev_loop * 1553struct ev_loop *
1554ev_default_loop_init (unsigned int flags)
705#else 1555#else
706static int default_loop;
707
708int 1556int
1557ev_default_loop (unsigned int flags)
709#endif 1558#endif
710ev_default_loop (int methods)
711{ 1559{
712 if (sigpipe [0] == sigpipe [1])
713 if (pipe (sigpipe))
714 return 0;
715
716 if (!default_loop) 1560 if (!ev_default_loop_ptr)
717 { 1561 {
718#if EV_MULTIPLICITY 1562#if EV_MULTIPLICITY
719 struct ev_loop *loop = default_loop = &default_loop_struct; 1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
720#else 1564#else
721 default_loop = 1; 1565 ev_default_loop_ptr = 1;
722#endif 1566#endif
723 1567
724 loop_init (EV_A_ methods); 1568 loop_init (EV_A_ flags);
725 1569
726 if (ev_method (EV_A)) 1570 if (ev_backend (EV_A))
727 { 1571 {
728 ev_watcher_init (&sigev, sigcb);
729 ev_set_priority (&sigev, EV_MAXPRI);
730 siginit (EV_A);
731
732#ifndef WIN32 1572#ifndef _WIN32
733 ev_signal_init (&childev, childcb, SIGCHLD); 1573 ev_signal_init (&childev, childcb, SIGCHLD);
734 ev_set_priority (&childev, EV_MAXPRI); 1574 ev_set_priority (&childev, EV_MAXPRI);
735 ev_signal_start (EV_A_ &childev); 1575 ev_signal_start (EV_A_ &childev);
736 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1576 ev_unref (EV_A); /* child watcher should not keep loop alive */
737#endif 1577#endif
738 } 1578 }
739 else 1579 else
740 default_loop = 0; 1580 ev_default_loop_ptr = 0;
741 } 1581 }
742 1582
743 return default_loop; 1583 return ev_default_loop_ptr;
744} 1584}
745 1585
746void 1586void
747ev_default_destroy (void) 1587ev_default_destroy (void)
748{ 1588{
749#if EV_MULTIPLICITY 1589#if EV_MULTIPLICITY
750 struct ev_loop *loop = default_loop; 1590 struct ev_loop *loop = ev_default_loop_ptr;
751#endif 1591#endif
752 1592
1593#ifndef _WIN32
753 ev_ref (EV_A); /* child watcher */ 1594 ev_ref (EV_A); /* child watcher */
754 ev_signal_stop (EV_A_ &childev); 1595 ev_signal_stop (EV_A_ &childev);
755 1596#endif
756 ev_ref (EV_A); /* signal watcher */
757 ev_io_stop (EV_A_ &sigev);
758
759 close (sigpipe [0]); sigpipe [0] = 0;
760 close (sigpipe [1]); sigpipe [1] = 0;
761 1597
762 loop_destroy (EV_A); 1598 loop_destroy (EV_A);
763} 1599}
764 1600
765void 1601void
766ev_default_fork (void) 1602ev_default_fork (void)
767{ 1603{
768#if EV_MULTIPLICITY 1604#if EV_MULTIPLICITY
769 struct ev_loop *loop = default_loop; 1605 struct ev_loop *loop = ev_default_loop_ptr;
770#endif 1606#endif
771 1607
772 loop_fork (EV_A); 1608 if (backend)
773 1609 postfork = 1; /* must be in line with ev_loop_fork */
774 ev_io_stop (EV_A_ &sigev);
775 close (sigpipe [0]);
776 close (sigpipe [1]);
777 pipe (sigpipe);
778
779 ev_ref (EV_A); /* signal watcher */
780 siginit (EV_A);
781} 1610}
782 1611
783/*****************************************************************************/ 1612/*****************************************************************************/
784 1613
785static void 1614void
1615ev_invoke (EV_P_ void *w, int revents)
1616{
1617 EV_CB_INVOKE ((W)w, revents);
1618}
1619
1620void inline_speed
786call_pending (EV_P) 1621call_pending (EV_P)
787{ 1622{
788 int pri; 1623 int pri;
1624
1625 EV_FREQUENT_CHECK;
789 1626
790 for (pri = NUMPRI; pri--; ) 1627 for (pri = NUMPRI; pri--; )
791 while (pendingcnt [pri]) 1628 while (pendingcnt [pri])
792 { 1629 {
793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794 1631
795 if (p->w) 1632 if (expect_true (p->w))
796 { 1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
797 p->w->pending = 0; 1636 p->w->pending = 0;
798 1637 EV_CB_INVOKE (p->w, p->events);
799 (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
800 } 1638 }
801 } 1639 }
802}
803 1640
804static void 1641 EV_FREQUENT_CHECK;
1642}
1643
1644#if EV_IDLE_ENABLE
1645void inline_size
1646idle_reify (EV_P)
1647{
1648 if (expect_false (idleall))
1649 {
1650 int pri;
1651
1652 for (pri = NUMPRI; pri--; )
1653 {
1654 if (pendingcnt [pri])
1655 break;
1656
1657 if (idlecnt [pri])
1658 {
1659 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1660 break;
1661 }
1662 }
1663 }
1664}
1665#endif
1666
1667void inline_size
805timers_reify (EV_P) 1668timers_reify (EV_P)
806{ 1669{
1670 EV_FREQUENT_CHECK;
1671
807 while (timercnt && ((WT)timers [0])->at <= mn_now) 1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
808 { 1673 {
809 struct ev_timer *w = timers [0]; 1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
810 1675
811 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
812 1677
813 /* first reschedule or stop timer */ 1678 /* first reschedule or stop timer */
814 if (w->repeat) 1679 if (w->repeat)
815 { 1680 {
1681 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now;
1684
816 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
817 ((WT)w)->at = mn_now + w->repeat; 1686
1687 ANHE_at_cache (timers [HEAP0]);
818 downheap ((WT *)timers, timercnt, 0); 1688 downheap (timers, timercnt, HEAP0);
819 } 1689 }
820 else 1690 else
821 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822 1692
1693 EV_FREQUENT_CHECK;
823 event (EV_A_ (W)w, EV_TIMEOUT); 1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824 } 1695 }
825} 1696}
826 1697
827static void 1698#if EV_PERIODIC_ENABLE
1699void inline_size
828periodics_reify (EV_P) 1700periodics_reify (EV_P)
829{ 1701{
1702 EV_FREQUENT_CHECK;
830 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
831 { 1704 {
832 struct ev_periodic *w = periodics [0]; 1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
833 1706
834 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
835 1708
836 /* first reschedule or stop timer */ 1709 /* first reschedule or stop timer */
837 if (w->interval) 1710 if (w->reschedule_cb)
838 { 1711 {
839 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
840 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1713
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715
1716 ANHE_at_cache (periodics [HEAP0]);
841 downheap ((WT *)periodics, periodiccnt, 0); 1717 downheap (periodics, periodiccnt, HEAP0);
1718 EV_FREQUENT_CHECK;
1719 }
1720 else if (w->interval)
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
842 } 1738 }
843 else 1739 else
844 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845 1741
1742 EV_FREQUENT_CHECK;
846 event (EV_A_ (W)w, EV_PERIODIC); 1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847 } 1744 }
848} 1745}
849 1746
850static void 1747static void noinline
851periodics_reschedule (EV_P) 1748periodics_reschedule (EV_P)
852{ 1749{
853 int i; 1750 int i;
854 1751
855 /* adjust periodics after time jump */ 1752 /* adjust periodics after time jump */
856 for (i = 0; i < periodiccnt; ++i) 1753 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
857 { 1754 {
858 struct ev_periodic *w = periodics [i]; 1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
859 1756
1757 if (w->reschedule_cb)
1758 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
860 if (w->interval) 1759 else if (w->interval)
1760 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1761
1762 ANHE_at_cache (periodics [i]);
1763 }
1764
1765 reheap (periodics, periodiccnt);
1766}
1767#endif
1768
1769void inline_speed
1770time_update (EV_P_ ev_tstamp max_block)
1771{
1772 int i;
1773
1774#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic))
1776 {
1777 ev_tstamp odiff = rtmn_diff;
1778
1779 mn_now = get_clock ();
1780
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1782 /* interpolate in the meantime */
1783 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
861 { 1784 {
862 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1785 ev_rt_now = rtmn_diff + mn_now;
1786 return;
1787 }
863 1788
864 if (fabs (diff) >= 1e-4) 1789 now_floor = mn_now;
1790 ev_rt_now = ev_time ();
1791
1792 /* loop a few times, before making important decisions.
1793 * on the choice of "4": one iteration isn't enough,
1794 * in case we get preempted during the calls to
1795 * ev_time and get_clock. a second call is almost guaranteed
1796 * to succeed in that case, though. and looping a few more times
1797 * doesn't hurt either as we only do this on time-jumps or
1798 * in the unlikely event of having been preempted here.
1799 */
1800 for (i = 4; --i; )
1801 {
1802 rtmn_diff = ev_rt_now - mn_now;
1803
1804 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1805 return; /* all is well */
1806
1807 ev_rt_now = ev_time ();
1808 mn_now = get_clock ();
1809 now_floor = mn_now;
1810 }
1811
1812# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A);
1814# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 }
1818 else
1819#endif
1820 {
1821 ev_rt_now = ev_time ();
1822
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 {
1825#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A);
1827#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
865 { 1830 {
866 ev_periodic_stop (EV_A_ w); 1831 ANHE *he = timers + i + HEAP0;
867 ev_periodic_start (EV_A_ w); 1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
868 1833 ANHE_at_cache (*he);
869 i = 0; /* restart loop, inefficient, but time jumps should be rare */
870 } 1834 }
871 } 1835 }
872 }
873}
874 1836
875inline int
876time_update_monotonic (EV_P)
877{
878 mn_now = get_clock ();
879
880 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
881 {
882 rt_now = rtmn_diff + mn_now;
883 return 0;
884 }
885 else
886 {
887 now_floor = mn_now;
888 rt_now = ev_time ();
889 return 1;
890 }
891}
892
893static void
894time_update (EV_P)
895{
896 int i;
897
898#if EV_USE_MONOTONIC
899 if (expect_true (have_monotonic))
900 {
901 if (time_update_monotonic (EV_A))
902 {
903 ev_tstamp odiff = rtmn_diff;
904
905 for (i = 4; --i; ) /* loop a few times, before making important decisions */
906 {
907 rtmn_diff = rt_now - mn_now;
908
909 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
910 return; /* all is well */
911
912 rt_now = ev_time ();
913 mn_now = get_clock ();
914 now_floor = mn_now;
915 }
916
917 periodics_reschedule (EV_A);
918 /* no timer adjustment, as the monotonic clock doesn't jump */
919 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
920 }
921 }
922 else
923#endif
924 {
925 rt_now = ev_time ();
926
927 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
928 {
929 periodics_reschedule (EV_A);
930
931 /* adjust timers. this is easy, as the offset is the same for all */
932 for (i = 0; i < timercnt; ++i)
933 ((WT)timers [i])->at += rt_now - mn_now;
934 }
935
936 mn_now = rt_now; 1837 mn_now = ev_rt_now;
937 } 1838 }
938} 1839}
939 1840
940void 1841void
941ev_ref (EV_P) 1842ev_ref (EV_P)
… …
952static int loop_done; 1853static int loop_done;
953 1854
954void 1855void
955ev_loop (EV_P_ int flags) 1856ev_loop (EV_P_ int flags)
956{ 1857{
957 double block; 1858 loop_done = EVUNLOOP_CANCEL;
958 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1859
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
959 1861
960 do 1862 do
961 { 1863 {
1864#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid))
1867 {
1868 curpid = getpid ();
1869 postfork = 1;
1870 }
1871#endif
1872
1873#if EV_FORK_ENABLE
1874 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork))
1876 if (forkcnt)
1877 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A);
1880 }
1881#endif
1882
962 /* queue check watchers (and execute them) */ 1883 /* queue prepare watchers (and execute them) */
963 if (expect_false (preparecnt)) 1884 if (expect_false (preparecnt))
964 { 1885 {
965 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966 call_pending (EV_A); 1887 call_pending (EV_A);
967 } 1888 }
968 1889
1890 if (expect_false (!activecnt))
1891 break;
1892
1893 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork))
1895 loop_fork (EV_A);
1896
969 /* update fd-related kernel structures */ 1897 /* update fd-related kernel structures */
970 fd_reify (EV_A); 1898 fd_reify (EV_A);
971 1899
972 /* calculate blocking time */ 1900 /* calculate blocking time */
1901 {
1902 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.;
973 1904
974 /* we only need this for !monotonic clockor timers, but as we basically 1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
975 always have timers, we just calculate it always */
976#if EV_USE_MONOTONIC
977 if (expect_true (have_monotonic))
978 time_update_monotonic (EV_A);
979 else
980#endif
981 { 1906 {
982 rt_now = ev_time (); 1907 /* update time to cancel out callback processing overhead */
983 mn_now = rt_now; 1908 time_update (EV_A_ 1e100);
984 }
985 1909
986 if (flags & EVLOOP_NONBLOCK || idlecnt)
987 block = 0.;
988 else
989 {
990 block = MAX_BLOCKTIME; 1910 waittime = MAX_BLOCKTIME;
991 1911
992 if (timercnt) 1912 if (timercnt)
993 { 1913 {
994 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1914 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
995 if (block > to) block = to; 1915 if (waittime > to) waittime = to;
996 } 1916 }
997 1917
1918#if EV_PERIODIC_ENABLE
998 if (periodiccnt) 1919 if (periodiccnt)
999 { 1920 {
1000 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1001 if (block > to) block = to; 1922 if (waittime > to) waittime = to;
1002 } 1923 }
1924#endif
1003 1925
1004 if (block < 0.) block = 0.; 1926 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime;
1928
1929 sleeptime = waittime - backend_fudge;
1930
1931 if (expect_true (sleeptime > io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 {
1936 ev_sleep (sleeptime);
1937 waittime -= sleeptime;
1938 }
1005 } 1939 }
1006 1940
1007 method_poll (EV_A_ block); 1941 ++loop_count;
1942 backend_poll (EV_A_ waittime);
1008 1943
1009 /* update rt_now, do magic */ 1944 /* update ev_rt_now, do magic */
1010 time_update (EV_A); 1945 time_update (EV_A_ waittime + sleeptime);
1946 }
1011 1947
1012 /* queue pending timers and reschedule them */ 1948 /* queue pending timers and reschedule them */
1013 timers_reify (EV_A); /* relative timers called last */ 1949 timers_reify (EV_A); /* relative timers called last */
1950#if EV_PERIODIC_ENABLE
1014 periodics_reify (EV_A); /* absolute timers called first */ 1951 periodics_reify (EV_A); /* absolute timers called first */
1952#endif
1015 1953
1954#if EV_IDLE_ENABLE
1016 /* queue idle watchers unless io or timers are pending */ 1955 /* queue idle watchers unless other events are pending */
1017 if (!pendingcnt) 1956 idle_reify (EV_A);
1018 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1957#endif
1019 1958
1020 /* queue check watchers, to be executed first */ 1959 /* queue check watchers, to be executed first */
1021 if (checkcnt) 1960 if (expect_false (checkcnt))
1022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1023 1962
1024 call_pending (EV_A); 1963 call_pending (EV_A);
1025 } 1964 }
1026 while (activecnt && !loop_done); 1965 while (expect_true (
1966 activecnt
1967 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 ));
1027 1970
1028 if (loop_done != 2) 1971 if (loop_done == EVUNLOOP_ONE)
1029 loop_done = 0; 1972 loop_done = EVUNLOOP_CANCEL;
1030} 1973}
1031 1974
1032void 1975void
1033ev_unloop (EV_P_ int how) 1976ev_unloop (EV_P_ int how)
1034{ 1977{
1035 loop_done = how; 1978 loop_done = how;
1036} 1979}
1037 1980
1038/*****************************************************************************/ 1981/*****************************************************************************/
1039 1982
1040inline void 1983void inline_size
1041wlist_add (WL *head, WL elem) 1984wlist_add (WL *head, WL elem)
1042{ 1985{
1043 elem->next = *head; 1986 elem->next = *head;
1044 *head = elem; 1987 *head = elem;
1045} 1988}
1046 1989
1047inline void 1990void inline_size
1048wlist_del (WL *head, WL elem) 1991wlist_del (WL *head, WL elem)
1049{ 1992{
1050 while (*head) 1993 while (*head)
1051 { 1994 {
1052 if (*head == elem) 1995 if (*head == elem)
… …
1057 2000
1058 head = &(*head)->next; 2001 head = &(*head)->next;
1059 } 2002 }
1060} 2003}
1061 2004
1062inline void 2005void inline_speed
1063ev_clear_pending (EV_P_ W w) 2006clear_pending (EV_P_ W w)
1064{ 2007{
1065 if (w->pending) 2008 if (w->pending)
1066 { 2009 {
1067 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2010 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1068 w->pending = 0; 2011 w->pending = 0;
1069 } 2012 }
1070} 2013}
1071 2014
1072inline void 2015int
2016ev_clear_pending (EV_P_ void *w)
2017{
2018 W w_ = (W)w;
2019 int pending = w_->pending;
2020
2021 if (expect_true (pending))
2022 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2024 w_->pending = 0;
2025 p->w = 0;
2026 return p->events;
2027 }
2028 else
2029 return 0;
2030}
2031
2032void inline_size
2033pri_adjust (EV_P_ W w)
2034{
2035 int pri = w->priority;
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri;
2039}
2040
2041void inline_speed
1073ev_start (EV_P_ W w, int active) 2042ev_start (EV_P_ W w, int active)
1074{ 2043{
1075 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2044 pri_adjust (EV_A_ w);
1076 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1077
1078 w->active = active; 2045 w->active = active;
1079 ev_ref (EV_A); 2046 ev_ref (EV_A);
1080} 2047}
1081 2048
1082inline void 2049void inline_size
1083ev_stop (EV_P_ W w) 2050ev_stop (EV_P_ W w)
1084{ 2051{
1085 ev_unref (EV_A); 2052 ev_unref (EV_A);
1086 w->active = 0; 2053 w->active = 0;
1087} 2054}
1088 2055
1089/*****************************************************************************/ 2056/*****************************************************************************/
1090 2057
1091void 2058void noinline
1092ev_io_start (EV_P_ struct ev_io *w) 2059ev_io_start (EV_P_ ev_io *w)
1093{ 2060{
1094 int fd = w->fd; 2061 int fd = w->fd;
1095 2062
1096 if (ev_is_active (w)) 2063 if (expect_false (ev_is_active (w)))
1097 return; 2064 return;
1098 2065
1099 assert (("ev_io_start called with negative fd", fd >= 0)); 2066 assert (("ev_io_start called with negative fd", fd >= 0));
1100 2067
2068 EV_FREQUENT_CHECK;
2069
1101 ev_start (EV_A_ (W)w, 1); 2070 ev_start (EV_A_ (W)w, 1);
1102 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2072 wlist_add (&anfds[fd].head, (WL)w);
1104 2073
1105 fd_change (EV_A_ fd); 2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1106} 2075 w->events &= ~EV_IOFDSET;
1107 2076
1108void 2077 EV_FREQUENT_CHECK;
2078}
2079
2080void noinline
1109ev_io_stop (EV_P_ struct ev_io *w) 2081ev_io_stop (EV_P_ ev_io *w)
1110{ 2082{
1111 ev_clear_pending (EV_A_ (W)w); 2083 clear_pending (EV_A_ (W)w);
1112 if (!ev_is_active (w)) 2084 if (expect_false (!ev_is_active (w)))
1113 return; 2085 return;
1114 2086
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088
2089 EV_FREQUENT_CHECK;
2090
1115 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2091 wlist_del (&anfds[w->fd].head, (WL)w);
1116 ev_stop (EV_A_ (W)w); 2092 ev_stop (EV_A_ (W)w);
1117 2093
1118 fd_change (EV_A_ w->fd); 2094 fd_change (EV_A_ w->fd, 1);
1119}
1120 2095
1121void 2096 EV_FREQUENT_CHECK;
2097}
2098
2099void noinline
1122ev_timer_start (EV_P_ struct ev_timer *w) 2100ev_timer_start (EV_P_ ev_timer *w)
1123{ 2101{
1124 if (ev_is_active (w)) 2102 if (expect_false (ev_is_active (w)))
1125 return; 2103 return;
1126 2104
1127 ((WT)w)->at += mn_now; 2105 ev_at (w) += mn_now;
1128 2106
1129 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1130 2108
2109 EV_FREQUENT_CHECK;
2110
2111 ++timercnt;
1131 ev_start (EV_A_ (W)w, ++timercnt); 2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1132 array_needsize (timers, timermax, timercnt, ); 2113 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1133 timers [timercnt - 1] = w; 2114 ANHE_w (timers [ev_active (w)]) = (WT)w;
1134 upheap ((WT *)timers, timercnt - 1); 2115 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w));
1135 2117
2118 EV_FREQUENT_CHECK;
2119
1136 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1137} 2121}
1138 2122
1139void 2123void noinline
1140ev_timer_stop (EV_P_ struct ev_timer *w) 2124ev_timer_stop (EV_P_ ev_timer *w)
1141{ 2125{
1142 ev_clear_pending (EV_A_ (W)w); 2126 clear_pending (EV_A_ (W)w);
1143 if (!ev_is_active (w)) 2127 if (expect_false (!ev_is_active (w)))
1144 return; 2128 return;
1145 2129
2130 EV_FREQUENT_CHECK;
2131
2132 {
2133 int active = ev_active (w);
2134
1146 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1147 2136
1148 if (((W)w)->active < timercnt--) 2137 --timercnt;
2138
2139 if (expect_true (active < timercnt + HEAP0))
1149 { 2140 {
1150 timers [((W)w)->active - 1] = timers [timercnt]; 2141 timers [active] = timers [timercnt + HEAP0];
1151 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2142 adjustheap (timers, timercnt, active);
1152 } 2143 }
2144 }
1153 2145
1154 ((WT)w)->at = w->repeat; 2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now;
1155 2149
1156 ev_stop (EV_A_ (W)w); 2150 ev_stop (EV_A_ (W)w);
1157} 2151}
1158 2152
1159void 2153void noinline
1160ev_timer_again (EV_P_ struct ev_timer *w) 2154ev_timer_again (EV_P_ ev_timer *w)
1161{ 2155{
2156 EV_FREQUENT_CHECK;
2157
1162 if (ev_is_active (w)) 2158 if (ev_is_active (w))
1163 { 2159 {
1164 if (w->repeat) 2160 if (w->repeat)
1165 { 2161 {
1166 ((WT)w)->at = mn_now + w->repeat; 2162 ev_at (w) = mn_now + w->repeat;
1167 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2163 ANHE_at_cache (timers [ev_active (w)]);
2164 adjustheap (timers, timercnt, ev_active (w));
1168 } 2165 }
1169 else 2166 else
1170 ev_timer_stop (EV_A_ w); 2167 ev_timer_stop (EV_A_ w);
1171 } 2168 }
1172 else if (w->repeat) 2169 else if (w->repeat)
2170 {
2171 ev_at (w) = w->repeat;
1173 ev_timer_start (EV_A_ w); 2172 ev_timer_start (EV_A_ w);
1174} 2173 }
1175 2174
1176void 2175 EV_FREQUENT_CHECK;
2176}
2177
2178#if EV_PERIODIC_ENABLE
2179void noinline
1177ev_periodic_start (EV_P_ struct ev_periodic *w) 2180ev_periodic_start (EV_P_ ev_periodic *w)
1178{ 2181{
1179 if (ev_is_active (w)) 2182 if (expect_false (ev_is_active (w)))
1180 return; 2183 return;
1181 2184
2185 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval)
2188 {
1182 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1183
1184 /* this formula differs from the one in periodic_reify because we do not always round up */ 2190 /* this formula differs from the one in periodic_reify because we do not always round up */
1185 if (w->interval)
1186 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 }
2193 else
2194 ev_at (w) = w->offset;
1187 2195
2196 EV_FREQUENT_CHECK;
2197
2198 ++periodiccnt;
1188 ev_start (EV_A_ (W)w, ++periodiccnt); 2199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1189 array_needsize (periodics, periodicmax, periodiccnt, ); 2200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1190 periodics [periodiccnt - 1] = w; 2201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1191 upheap ((WT *)periodics, periodiccnt - 1); 2202 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w));
1192 2204
2205 EV_FREQUENT_CHECK;
2206
1193 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1194} 2208}
1195 2209
1196void 2210void noinline
1197ev_periodic_stop (EV_P_ struct ev_periodic *w) 2211ev_periodic_stop (EV_P_ ev_periodic *w)
1198{ 2212{
1199 ev_clear_pending (EV_A_ (W)w); 2213 clear_pending (EV_A_ (W)w);
1200 if (!ev_is_active (w)) 2214 if (expect_false (!ev_is_active (w)))
1201 return; 2215 return;
1202 2216
2217 EV_FREQUENT_CHECK;
2218
2219 {
2220 int active = ev_active (w);
2221
1203 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1204 2223
1205 if (((W)w)->active < periodiccnt--) 2224 --periodiccnt;
2225
2226 if (expect_true (active < periodiccnt + HEAP0))
1206 { 2227 {
1207 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2228 periodics [active] = periodics [periodiccnt + HEAP0];
1208 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2229 adjustheap (periodics, periodiccnt, active);
1209 } 2230 }
2231 }
2232
2233 EV_FREQUENT_CHECK;
1210 2234
1211 ev_stop (EV_A_ (W)w); 2235 ev_stop (EV_A_ (W)w);
1212} 2236}
1213 2237
1214void 2238void noinline
1215ev_idle_start (EV_P_ struct ev_idle *w) 2239ev_periodic_again (EV_P_ ev_periodic *w)
1216{ 2240{
1217 if (ev_is_active (w)) 2241 /* TODO: use adjustheap and recalculation */
1218 return;
1219
1220 ev_start (EV_A_ (W)w, ++idlecnt);
1221 array_needsize (idles, idlemax, idlecnt, );
1222 idles [idlecnt - 1] = w;
1223}
1224
1225void
1226ev_idle_stop (EV_P_ struct ev_idle *w)
1227{
1228 ev_clear_pending (EV_A_ (W)w);
1229 if (ev_is_active (w))
1230 return;
1231
1232 idles [((W)w)->active - 1] = idles [--idlecnt];
1233 ev_stop (EV_A_ (W)w); 2242 ev_periodic_stop (EV_A_ w);
2243 ev_periodic_start (EV_A_ w);
1234} 2244}
1235 2245#endif
1236void
1237ev_prepare_start (EV_P_ struct ev_prepare *w)
1238{
1239 if (ev_is_active (w))
1240 return;
1241
1242 ev_start (EV_A_ (W)w, ++preparecnt);
1243 array_needsize (prepares, preparemax, preparecnt, );
1244 prepares [preparecnt - 1] = w;
1245}
1246
1247void
1248ev_prepare_stop (EV_P_ struct ev_prepare *w)
1249{
1250 ev_clear_pending (EV_A_ (W)w);
1251 if (ev_is_active (w))
1252 return;
1253
1254 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1255 ev_stop (EV_A_ (W)w);
1256}
1257
1258void
1259ev_check_start (EV_P_ struct ev_check *w)
1260{
1261 if (ev_is_active (w))
1262 return;
1263
1264 ev_start (EV_A_ (W)w, ++checkcnt);
1265 array_needsize (checks, checkmax, checkcnt, );
1266 checks [checkcnt - 1] = w;
1267}
1268
1269void
1270ev_check_stop (EV_P_ struct ev_check *w)
1271{
1272 ev_clear_pending (EV_A_ (W)w);
1273 if (ev_is_active (w))
1274 return;
1275
1276 checks [((W)w)->active - 1] = checks [--checkcnt];
1277 ev_stop (EV_A_ (W)w);
1278}
1279 2246
1280#ifndef SA_RESTART 2247#ifndef SA_RESTART
1281# define SA_RESTART 0 2248# define SA_RESTART 0
1282#endif 2249#endif
1283 2250
1284void 2251void noinline
1285ev_signal_start (EV_P_ struct ev_signal *w) 2252ev_signal_start (EV_P_ ev_signal *w)
1286{ 2253{
1287#if EV_MULTIPLICITY 2254#if EV_MULTIPLICITY
1288 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1289#endif 2256#endif
1290 if (ev_is_active (w)) 2257 if (expect_false (ev_is_active (w)))
1291 return; 2258 return;
1292 2259
1293 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1294 2261
2262 evpipe_init (EV_A);
2263
2264 EV_FREQUENT_CHECK;
2265
2266 {
2267#ifndef _WIN32
2268 sigset_t full, prev;
2269 sigfillset (&full);
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2274
2275#ifndef _WIN32
2276 sigprocmask (SIG_SETMASK, &prev, 0);
2277#endif
2278 }
2279
1295 ev_start (EV_A_ (W)w, 1); 2280 ev_start (EV_A_ (W)w, 1);
1296 array_needsize (signals, signalmax, w->signum, signals_init);
1297 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2281 wlist_add (&signals [w->signum - 1].head, (WL)w);
1298 2282
1299 if (!((WL)w)->next) 2283 if (!((WL)w)->next)
1300 { 2284 {
2285#if _WIN32
2286 signal (w->signum, ev_sighandler);
2287#else
1301 struct sigaction sa; 2288 struct sigaction sa;
1302 sa.sa_handler = sighandler; 2289 sa.sa_handler = ev_sighandler;
1303 sigfillset (&sa.sa_mask); 2290 sigfillset (&sa.sa_mask);
1304 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1305 sigaction (w->signum, &sa, 0); 2292 sigaction (w->signum, &sa, 0);
2293#endif
1306 } 2294 }
1307}
1308 2295
1309void 2296 EV_FREQUENT_CHECK;
2297}
2298
2299void noinline
1310ev_signal_stop (EV_P_ struct ev_signal *w) 2300ev_signal_stop (EV_P_ ev_signal *w)
1311{ 2301{
1312 ev_clear_pending (EV_A_ (W)w); 2302 clear_pending (EV_A_ (W)w);
1313 if (!ev_is_active (w)) 2303 if (expect_false (!ev_is_active (w)))
1314 return; 2304 return;
1315 2305
2306 EV_FREQUENT_CHECK;
2307
1316 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2308 wlist_del (&signals [w->signum - 1].head, (WL)w);
1317 ev_stop (EV_A_ (W)w); 2309 ev_stop (EV_A_ (W)w);
1318 2310
1319 if (!signals [w->signum - 1].head) 2311 if (!signals [w->signum - 1].head)
1320 signal (w->signum, SIG_DFL); 2312 signal (w->signum, SIG_DFL);
1321}
1322 2313
2314 EV_FREQUENT_CHECK;
2315}
2316
1323void 2317void
1324ev_child_start (EV_P_ struct ev_child *w) 2318ev_child_start (EV_P_ ev_child *w)
1325{ 2319{
1326#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
1327 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1328#endif 2322#endif
1329 if (ev_is_active (w)) 2323 if (expect_false (ev_is_active (w)))
1330 return; 2324 return;
1331 2325
2326 EV_FREQUENT_CHECK;
2327
1332 ev_start (EV_A_ (W)w, 1); 2328 ev_start (EV_A_ (W)w, 1);
1333 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2329 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1334}
1335 2330
2331 EV_FREQUENT_CHECK;
2332}
2333
1336void 2334void
1337ev_child_stop (EV_P_ struct ev_child *w) 2335ev_child_stop (EV_P_ ev_child *w)
1338{ 2336{
1339 ev_clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1340 if (ev_is_active (w)) 2338 if (expect_false (!ev_is_active (w)))
1341 return; 2339 return;
1342 2340
2341 EV_FREQUENT_CHECK;
2342
1343 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2343 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1344 ev_stop (EV_A_ (W)w); 2344 ev_stop (EV_A_ (W)w);
2345
2346 EV_FREQUENT_CHECK;
1345} 2347}
2348
2349#if EV_STAT_ENABLE
2350
2351# ifdef _WIN32
2352# undef lstat
2353# define lstat(a,b) _stati64 (a,b)
2354# endif
2355
2356#define DEF_STAT_INTERVAL 5.0074891
2357#define MIN_STAT_INTERVAL 0.1074891
2358
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360
2361#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192
2363
2364static void noinline
2365infy_add (EV_P_ ev_stat *w)
2366{
2367 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);
2368
2369 if (w->wd < 0)
2370 {
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372
2373 /* monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */
2375 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 {
2378 char path [4096];
2379 strcpy (path, w->path);
2380
2381 do
2382 {
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385
2386 char *pend = strrchr (path, '/');
2387
2388 if (!pend)
2389 break; /* whoops, no '/', complain to your admin */
2390
2391 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 }
2396 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399
2400 if (w->wd >= 0)
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2402}
2403
2404static void noinline
2405infy_del (EV_P_ ev_stat *w)
2406{
2407 int slot;
2408 int wd = w->wd;
2409
2410 if (wd < 0)
2411 return;
2412
2413 w->wd = -2;
2414 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2415 wlist_del (&fs_hash [slot].head, (WL)w);
2416
2417 /* remove this watcher, if others are watching it, they will rearm */
2418 inotify_rm_watch (fs_fd, wd);
2419}
2420
2421static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{
2424 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427 infy_wd (EV_A_ slot, wd, ev);
2428 else
2429 {
2430 WL w_;
2431
2432 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2433 {
2434 ev_stat *w = (ev_stat *)w_;
2435 w_ = w_->next; /* lets us remove this watcher and all before it */
2436
2437 if (w->wd == wd || wd == -1)
2438 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 {
2441 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */
2443 }
2444
2445 stat_timer_cb (EV_A_ &w->timer, 0);
2446 }
2447 }
2448 }
2449}
2450
2451static void
2452infy_cb (EV_P_ ev_io *w, int revents)
2453{
2454 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf));
2458
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461}
2462
2463void inline_size
2464infy_init (EV_P)
2465{
2466 if (fs_fd != -2)
2467 return;
2468
2469 fs_fd = inotify_init ();
2470
2471 if (fs_fd >= 0)
2472 {
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w);
2476 }
2477}
2478
2479void inline_size
2480infy_fork (EV_P)
2481{
2482 int slot;
2483
2484 if (fs_fd < 0)
2485 return;
2486
2487 close (fs_fd);
2488 fs_fd = inotify_init ();
2489
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2491 {
2492 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0;
2494
2495 while (w_)
2496 {
2497 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us add this watcher */
2499
2500 w->wd = -1;
2501
2502 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else
2505 ev_timer_start (EV_A_ &w->timer);
2506 }
2507
2508 }
2509}
2510
2511#endif
2512
2513void
2514ev_stat_stat (EV_P_ ev_stat *w)
2515{
2516 if (lstat (w->path, &w->attr) < 0)
2517 w->attr.st_nlink = 0;
2518 else if (!w->attr.st_nlink)
2519 w->attr.st_nlink = 1;
2520}
2521
2522static void noinline
2523stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524{
2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526
2527 /* we copy this here each the time so that */
2528 /* prev has the old value when the callback gets invoked */
2529 w->prev = w->attr;
2530 ev_stat_stat (EV_A_ w);
2531
2532 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533 if (
2534 w->prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime
2545 ) {
2546 #if EV_USE_INOTIFY
2547 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */
2550 #endif
2551
2552 ev_feed_event (EV_A_ w, EV_STAT);
2553 }
2554}
2555
2556void
2557ev_stat_start (EV_P_ ev_stat *w)
2558{
2559 if (expect_false (ev_is_active (w)))
2560 return;
2561
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w);
2567
2568 if (w->interval < MIN_STAT_INTERVAL)
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2572 ev_set_priority (&w->timer, ev_priority (w));
2573
2574#if EV_USE_INOTIFY
2575 infy_init (EV_A);
2576
2577 if (fs_fd >= 0)
2578 infy_add (EV_A_ w);
2579 else
2580#endif
2581 ev_timer_start (EV_A_ &w->timer);
2582
2583 ev_start (EV_A_ (W)w, 1);
2584
2585 EV_FREQUENT_CHECK;
2586}
2587
2588void
2589ev_stat_stop (EV_P_ ev_stat *w)
2590{
2591 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w)))
2593 return;
2594
2595 EV_FREQUENT_CHECK;
2596
2597#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w);
2599#endif
2600 ev_timer_stop (EV_A_ &w->timer);
2601
2602 ev_stop (EV_A_ (W)w);
2603
2604 EV_FREQUENT_CHECK;
2605}
2606#endif
2607
2608#if EV_IDLE_ENABLE
2609void
2610ev_idle_start (EV_P_ ev_idle *w)
2611{
2612 if (expect_false (ev_is_active (w)))
2613 return;
2614
2615 pri_adjust (EV_A_ (W)w);
2616
2617 EV_FREQUENT_CHECK;
2618
2619 {
2620 int active = ++idlecnt [ABSPRI (w)];
2621
2622 ++idleall;
2623 ev_start (EV_A_ (W)w, active);
2624
2625 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2626 idles [ABSPRI (w)][active - 1] = w;
2627 }
2628
2629 EV_FREQUENT_CHECK;
2630}
2631
2632void
2633ev_idle_stop (EV_P_ ev_idle *w)
2634{
2635 clear_pending (EV_A_ (W)w);
2636 if (expect_false (!ev_is_active (w)))
2637 return;
2638
2639 EV_FREQUENT_CHECK;
2640
2641 {
2642 int active = ev_active (w);
2643
2644 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2645 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2646
2647 ev_stop (EV_A_ (W)w);
2648 --idleall;
2649 }
2650
2651 EV_FREQUENT_CHECK;
2652}
2653#endif
2654
2655void
2656ev_prepare_start (EV_P_ ev_prepare *w)
2657{
2658 if (expect_false (ev_is_active (w)))
2659 return;
2660
2661 EV_FREQUENT_CHECK;
2662
2663 ev_start (EV_A_ (W)w, ++preparecnt);
2664 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2665 prepares [preparecnt - 1] = w;
2666
2667 EV_FREQUENT_CHECK;
2668}
2669
2670void
2671ev_prepare_stop (EV_P_ ev_prepare *w)
2672{
2673 clear_pending (EV_A_ (W)w);
2674 if (expect_false (!ev_is_active (w)))
2675 return;
2676
2677 EV_FREQUENT_CHECK;
2678
2679 {
2680 int active = ev_active (w);
2681
2682 prepares [active - 1] = prepares [--preparecnt];
2683 ev_active (prepares [active - 1]) = active;
2684 }
2685
2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2689}
2690
2691void
2692ev_check_start (EV_P_ ev_check *w)
2693{
2694 if (expect_false (ev_is_active (w)))
2695 return;
2696
2697 EV_FREQUENT_CHECK;
2698
2699 ev_start (EV_A_ (W)w, ++checkcnt);
2700 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2701 checks [checkcnt - 1] = w;
2702
2703 EV_FREQUENT_CHECK;
2704}
2705
2706void
2707ev_check_stop (EV_P_ ev_check *w)
2708{
2709 clear_pending (EV_A_ (W)w);
2710 if (expect_false (!ev_is_active (w)))
2711 return;
2712
2713 EV_FREQUENT_CHECK;
2714
2715 {
2716 int active = ev_active (w);
2717
2718 checks [active - 1] = checks [--checkcnt];
2719 ev_active (checks [active - 1]) = active;
2720 }
2721
2722 ev_stop (EV_A_ (W)w);
2723
2724 EV_FREQUENT_CHECK;
2725}
2726
2727#if EV_EMBED_ENABLE
2728void noinline
2729ev_embed_sweep (EV_P_ ev_embed *w)
2730{
2731 ev_loop (w->other, EVLOOP_NONBLOCK);
2732}
2733
2734static void
2735embed_io_cb (EV_P_ ev_io *io, int revents)
2736{
2737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2738
2739 if (ev_cb (w))
2740 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2741 else
2742 ev_loop (w->other, EVLOOP_NONBLOCK);
2743}
2744
2745static void
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749
2750 {
2751 struct ev_loop *loop = w->other;
2752
2753 while (fdchangecnt)
2754 {
2755 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 }
2758 }
2759}
2760
2761#if 0
2762static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{
2765 ev_idle_stop (EV_A_ idle);
2766}
2767#endif
2768
2769void
2770ev_embed_start (EV_P_ ev_embed *w)
2771{
2772 if (expect_false (ev_is_active (w)))
2773 return;
2774
2775 {
2776 struct ev_loop *loop = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 }
2780
2781 EV_FREQUENT_CHECK;
2782
2783 ev_set_priority (&w->io, ev_priority (w));
2784 ev_io_start (EV_A_ &w->io);
2785
2786 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare);
2789
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791
2792 ev_start (EV_A_ (W)w, 1);
2793
2794 EV_FREQUENT_CHECK;
2795}
2796
2797void
2798ev_embed_stop (EV_P_ ev_embed *w)
2799{
2800 clear_pending (EV_A_ (W)w);
2801 if (expect_false (!ev_is_active (w)))
2802 return;
2803
2804 EV_FREQUENT_CHECK;
2805
2806 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare);
2808
2809 ev_stop (EV_A_ (W)w);
2810
2811 EV_FREQUENT_CHECK;
2812}
2813#endif
2814
2815#if EV_FORK_ENABLE
2816void
2817ev_fork_start (EV_P_ ev_fork *w)
2818{
2819 if (expect_false (ev_is_active (w)))
2820 return;
2821
2822 EV_FREQUENT_CHECK;
2823
2824 ev_start (EV_A_ (W)w, ++forkcnt);
2825 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2826 forks [forkcnt - 1] = w;
2827
2828 EV_FREQUENT_CHECK;
2829}
2830
2831void
2832ev_fork_stop (EV_P_ ev_fork *w)
2833{
2834 clear_pending (EV_A_ (W)w);
2835 if (expect_false (!ev_is_active (w)))
2836 return;
2837
2838 EV_FREQUENT_CHECK;
2839
2840 {
2841 int active = ev_active (w);
2842
2843 forks [active - 1] = forks [--forkcnt];
2844 ev_active (forks [active - 1]) = active;
2845 }
2846
2847 ev_stop (EV_A_ (W)w);
2848
2849 EV_FREQUENT_CHECK;
2850}
2851#endif
2852
2853#if EV_ASYNC_ENABLE
2854void
2855ev_async_start (EV_P_ ev_async *w)
2856{
2857 if (expect_false (ev_is_active (w)))
2858 return;
2859
2860 evpipe_init (EV_A);
2861
2862 EV_FREQUENT_CHECK;
2863
2864 ev_start (EV_A_ (W)w, ++asynccnt);
2865 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2866 asyncs [asynccnt - 1] = w;
2867
2868 EV_FREQUENT_CHECK;
2869}
2870
2871void
2872ev_async_stop (EV_P_ ev_async *w)
2873{
2874 clear_pending (EV_A_ (W)w);
2875 if (expect_false (!ev_is_active (w)))
2876 return;
2877
2878 EV_FREQUENT_CHECK;
2879
2880 {
2881 int active = ev_active (w);
2882
2883 asyncs [active - 1] = asyncs [--asynccnt];
2884 ev_active (asyncs [active - 1]) = active;
2885 }
2886
2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2890}
2891
2892void
2893ev_async_send (EV_P_ ev_async *w)
2894{
2895 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync);
2897}
2898#endif
1346 2899
1347/*****************************************************************************/ 2900/*****************************************************************************/
1348 2901
1349struct ev_once 2902struct ev_once
1350{ 2903{
1351 struct ev_io io; 2904 ev_io io;
1352 struct ev_timer to; 2905 ev_timer to;
1353 void (*cb)(int revents, void *arg); 2906 void (*cb)(int revents, void *arg);
1354 void *arg; 2907 void *arg;
1355}; 2908};
1356 2909
1357static void 2910static void
… …
1360 void (*cb)(int revents, void *arg) = once->cb; 2913 void (*cb)(int revents, void *arg) = once->cb;
1361 void *arg = once->arg; 2914 void *arg = once->arg;
1362 2915
1363 ev_io_stop (EV_A_ &once->io); 2916 ev_io_stop (EV_A_ &once->io);
1364 ev_timer_stop (EV_A_ &once->to); 2917 ev_timer_stop (EV_A_ &once->to);
1365 free (once); 2918 ev_free (once);
1366 2919
1367 cb (revents, arg); 2920 cb (revents, arg);
1368} 2921}
1369 2922
1370static void 2923static void
1371once_cb_io (EV_P_ struct ev_io *w, int revents) 2924once_cb_io (EV_P_ ev_io *w, int revents)
1372{ 2925{
1373 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1374} 2927}
1375 2928
1376static void 2929static void
1377once_cb_to (EV_P_ struct ev_timer *w, int revents) 2930once_cb_to (EV_P_ ev_timer *w, int revents)
1378{ 2931{
1379 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1380} 2933}
1381 2934
1382void 2935void
1383ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1384{ 2937{
1385 struct ev_once *once = malloc (sizeof (struct ev_once)); 2938 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1386 2939
1387 if (!once) 2940 if (expect_false (!once))
2941 {
1388 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2942 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1389 else 2943 return;
1390 { 2944 }
2945
1391 once->cb = cb; 2946 once->cb = cb;
1392 once->arg = arg; 2947 once->arg = arg;
1393 2948
1394 ev_watcher_init (&once->io, once_cb_io); 2949 ev_init (&once->io, once_cb_io);
1395 if (fd >= 0) 2950 if (fd >= 0)
1396 { 2951 {
1397 ev_io_set (&once->io, fd, events); 2952 ev_io_set (&once->io, fd, events);
1398 ev_io_start (EV_A_ &once->io); 2953 ev_io_start (EV_A_ &once->io);
1399 } 2954 }
1400 2955
1401 ev_watcher_init (&once->to, once_cb_to); 2956 ev_init (&once->to, once_cb_to);
1402 if (timeout >= 0.) 2957 if (timeout >= 0.)
1403 { 2958 {
1404 ev_timer_set (&once->to, timeout, 0.); 2959 ev_timer_set (&once->to, timeout, 0.);
1405 ev_timer_start (EV_A_ &once->to); 2960 ev_timer_start (EV_A_ &once->to);
1406 }
1407 } 2961 }
1408} 2962}
1409 2963
2964#if EV_MULTIPLICITY
2965 #include "ev_wrap.h"
2966#endif
2967
2968#ifdef __cplusplus
2969}
2970#endif
2971

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines