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Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.255 by root, Mon Jun 9 14:11:30 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
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
78# define EV_USE_MONOTONIC 1 170# define EV_USE_MONOTONIC 1
171# else
172# define EV_USE_MONOTONIC 0
173# endif
174#endif
175
176#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0
178#endif
179
180#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1
183# else
184# define EV_USE_NANOSLEEP 0
185# endif
79#endif 186#endif
80 187
81#ifndef EV_USE_SELECT 188#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 189# define EV_USE_SELECT 1
83#endif 190#endif
84 191
85#ifndef EV_USE_POLL 192#ifndef EV_USE_POLL
86# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 193# ifdef _WIN32
194# define EV_USE_POLL 0
195# else
196# define EV_USE_POLL 1
197# endif
87#endif 198#endif
88 199
89#ifndef EV_USE_EPOLL 200#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1
203# else
90# define EV_USE_EPOLL 0 204# define EV_USE_EPOLL 0
205# endif
91#endif 206#endif
92 207
93#ifndef EV_USE_KQUEUE 208#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 209# define EV_USE_KQUEUE 0
95#endif 210#endif
96 211
212#ifndef EV_USE_PORT
213# define EV_USE_PORT 0
214#endif
215
97#ifndef EV_USE_WIN32 216#ifndef EV_USE_INOTIFY
98# ifdef WIN32 217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
99# define EV_USE_WIN32 1 218# define EV_USE_INOTIFY 1
100# else 219# else
101# define EV_USE_WIN32 0 220# define EV_USE_INOTIFY 0
102# endif 221# endif
103#endif 222#endif
104 223
105#ifndef EV_USE_REALTIME 224#ifndef EV_PID_HASHSIZE
106# define EV_USE_REALTIME 1 225# if EV_MINIMAL
226# define EV_PID_HASHSIZE 1
227# else
228# define EV_PID_HASHSIZE 16
107#endif 229# endif
230#endif
108 231
109/**/ 232#ifndef EV_INOTIFY_HASHSIZE
233# if EV_MINIMAL
234# define EV_INOTIFY_HASHSIZE 1
235# else
236# define EV_INOTIFY_HASHSIZE 16
237# endif
238#endif
239
240#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1
243# else
244# define EV_USE_EVENTFD 0
245# endif
246#endif
247
248#if 0 /* debugging */
249# define EV_VERIFY 3
250# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1
252#endif
253
254#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL
256#endif
257
258#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL
260#endif
261
262#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL
264#endif
265
266/* this block fixes any misconfiguration where we know we run into trouble otherwise */
110 267
111#ifndef CLOCK_MONOTONIC 268#ifndef CLOCK_MONOTONIC
112# undef EV_USE_MONOTONIC 269# undef EV_USE_MONOTONIC
113# define EV_USE_MONOTONIC 0 270# define EV_USE_MONOTONIC 0
114#endif 271#endif
… …
116#ifndef CLOCK_REALTIME 273#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 274# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 275# define EV_USE_REALTIME 0
119#endif 276#endif
120 277
278#if !EV_STAT_ENABLE
279# undef EV_USE_INOTIFY
280# define EV_USE_INOTIFY 0
281#endif
282
283#if !EV_USE_NANOSLEEP
284# ifndef _WIN32
285# include <sys/select.h>
286# endif
287#endif
288
289#if EV_USE_INOTIFY
290# include <sys/inotify.h>
291#endif
292
293#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h>
295#endif
296
297#if EV_USE_EVENTFD
298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h>
300# ifdef __cplusplus
301extern "C" {
302# endif
303int eventfd (unsigned int initval, int flags);
304# ifdef __cplusplus
305}
306# endif
307#endif
308
121/**/ 309/**/
122 310
311#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
313#else
314# define EV_FREQUENT_CHECK do { } while (0)
315#endif
316
317/*
318 * This is used to avoid floating point rounding problems.
319 * It is added to ev_rt_now when scheduling periodics
320 * to ensure progress, time-wise, even when rounding
321 * errors are against us.
322 * This value is good at least till the year 4000.
323 * Better solutions welcome.
324 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
326
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 327#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) */ 328#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 */ 329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127 330
128#include "ev.h"
129
130#if __GNUC__ >= 3 331#if __GNUC__ >= 4
131# define expect(expr,value) __builtin_expect ((expr),(value)) 332# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 333# define noinline __attribute__ ((noinline))
133#else 334#else
134# define expect(expr,value) (expr) 335# define expect(expr,value) (expr)
135# define inline static 336# define noinline
337# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
338# define inline
339# endif
136#endif 340#endif
137 341
138#define expect_false(expr) expect ((expr) != 0, 0) 342#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 343#define expect_true(expr) expect ((expr) != 0, 1)
344#define inline_size static inline
345
346#if EV_MINIMAL
347# define inline_speed static noinline
348#else
349# define inline_speed static inline
350#endif
140 351
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 354
355#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */
357
144typedef struct ev_watcher *W; 358typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 359typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 360typedef ev_watcher_time *WT;
147 361
362#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at
364
365#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
369#endif
149 370
150#if WIN32 371#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 372# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 373#endif
155 374
156/*****************************************************************************/ 375/*****************************************************************************/
157 376
377static void (*syserr_cb)(const char *msg);
378
379void
380ev_set_syserr_cb (void (*cb)(const char *msg))
381{
382 syserr_cb = cb;
383}
384
385static void noinline
386syserr (const char *msg)
387{
388 if (!msg)
389 msg = "(libev) system error";
390
391 if (syserr_cb)
392 syserr_cb (msg);
393 else
394 {
395 perror (msg);
396 abort ();
397 }
398}
399
400static void *
401ev_realloc_emul (void *ptr, long size)
402{
403 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and
405 * the single unix specification, so work around them here.
406 */
407
408 if (size)
409 return realloc (ptr, size);
410
411 free (ptr);
412 return 0;
413}
414
415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
416
417void
418ev_set_allocator (void *(*cb)(void *ptr, long size))
419{
420 alloc = cb;
421}
422
423inline_speed void *
424ev_realloc (void *ptr, long size)
425{
426 ptr = alloc (ptr, size);
427
428 if (!ptr && size)
429 {
430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
431 abort ();
432 }
433
434 return ptr;
435}
436
437#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0)
439
440/*****************************************************************************/
441
158typedef struct 442typedef struct
159{ 443{
160 struct ev_watcher_list *head; 444 WL head;
161 unsigned char events; 445 unsigned char events;
162 unsigned char reify; 446 unsigned char reify;
447#if EV_SELECT_IS_WINSOCKET
448 SOCKET handle;
449#endif
163} ANFD; 450} ANFD;
164 451
165typedef struct 452typedef struct
166{ 453{
167 W w; 454 W w;
168 int events; 455 int events;
169} ANPENDING; 456} ANPENDING;
170 457
458#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */
460typedef struct
461{
462 WL head;
463} ANFS;
464#endif
465
466/* Heap Entry */
467#if EV_HEAP_CACHE_AT
468 typedef struct {
469 ev_tstamp at;
470 WT w;
471 } ANHE;
472
473 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else
477 typedef WT ANHE;
478
479 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he)
482#endif
483
171#if EV_MULTIPLICITY 484#if EV_MULTIPLICITY
172 485
173struct ev_loop 486 struct ev_loop
174{ 487 {
488 ev_tstamp ev_rt_now;
489 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 490 #define VAR(name,decl) decl;
176# include "ev_vars.h" 491 #include "ev_vars.h"
177};
178# undef VAR 492 #undef VAR
493 };
179# include "ev_wrap.h" 494 #include "ev_wrap.h"
495
496 static struct ev_loop default_loop_struct;
497 struct ev_loop *ev_default_loop_ptr;
180 498
181#else 499#else
182 500
501 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 502 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 503 #include "ev_vars.h"
185# undef VAR 504 #undef VAR
505
506 static int ev_default_loop_ptr;
186 507
187#endif 508#endif
188 509
189/*****************************************************************************/ 510/*****************************************************************************/
190 511
191inline ev_tstamp 512ev_tstamp
192ev_time (void) 513ev_time (void)
193{ 514{
194#if EV_USE_REALTIME 515#if EV_USE_REALTIME
195 struct timespec ts; 516 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 517 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 521 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 522 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 523#endif
203} 524}
204 525
205inline ev_tstamp 526ev_tstamp inline_size
206get_clock (void) 527get_clock (void)
207{ 528{
208#if EV_USE_MONOTONIC 529#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 530 if (expect_true (have_monotonic))
210 { 531 {
… …
215#endif 536#endif
216 537
217 return ev_time (); 538 return ev_time ();
218} 539}
219 540
541#if EV_MULTIPLICITY
220ev_tstamp 542ev_tstamp
221ev_now (EV_P) 543ev_now (EV_P)
222{ 544{
223 return rt_now; 545 return ev_rt_now;
224} 546}
547#endif
225 548
226#define array_roundsize(base,n) ((n) | 4 & ~3) 549void
550ev_sleep (ev_tstamp delay)
551{
552 if (delay > 0.)
553 {
554#if EV_USE_NANOSLEEP
555 struct timespec ts;
227 556
557 ts.tv_sec = (time_t)delay;
558 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
559
560 nanosleep (&ts, 0);
561#elif defined(_WIN32)
562 Sleep ((unsigned long)(delay * 1e3));
563#else
564 struct timeval tv;
565
566 tv.tv_sec = (time_t)delay;
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568
569 select (0, 0, 0, 0, &tv);
570#endif
571 }
572}
573
574/*****************************************************************************/
575
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577
578int inline_size
579array_nextsize (int elem, int cur, int cnt)
580{
581 int ncur = cur + 1;
582
583 do
584 ncur <<= 1;
585 while (cnt > ncur);
586
587 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
588 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
589 {
590 ncur *= elem;
591 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
592 ncur = ncur - sizeof (void *) * 4;
593 ncur /= elem;
594 }
595
596 return ncur;
597}
598
599static noinline void *
600array_realloc (int elem, void *base, int *cur, int cnt)
601{
602 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur);
604}
605
228#define array_needsize(base,cur,cnt,init) \ 606#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 607 if (expect_false ((cnt) > (cur))) \
230 { \ 608 { \
231 int newcnt = cur; \ 609 int ocur_ = (cur); \
232 do \ 610 (base) = (type *)array_realloc \
233 { \ 611 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 612 init ((base) + (ocur_), (cur) - ocur_); \
235 } \
236 while ((cnt) > newcnt); \
237 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \
239 init (base + cur, newcnt - cur); \
240 cur = newcnt; \
241 } 613 }
242 614
615#if 0
243#define array_slim(stem) \ 616#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 617 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 618 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 619 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 620 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 622 }
623#endif
250 624
251#define array_free(stem, idx) \ 625#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 627
254/*****************************************************************************/ 628/*****************************************************************************/
255 629
256static void 630void noinline
631ev_feed_event (EV_P_ void *w, int revents)
632{
633 W w_ = (W)w;
634 int pri = ABSPRI (w_);
635
636 if (expect_false (w_->pending))
637 pendings [pri][w_->pending - 1].events |= revents;
638 else
639 {
640 w_->pending = ++pendingcnt [pri];
641 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
642 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents;
644 }
645}
646
647void inline_speed
648queue_events (EV_P_ W *events, int eventcnt, int type)
649{
650 int i;
651
652 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type);
654}
655
656/*****************************************************************************/
657
658void inline_size
257anfds_init (ANFD *base, int count) 659anfds_init (ANFD *base, int count)
258{ 660{
259 while (count--) 661 while (count--)
260 { 662 {
261 base->head = 0; 663 base->head = 0;
… …
264 666
265 ++base; 667 ++base;
266 } 668 }
267} 669}
268 670
269static void 671void inline_speed
270event (EV_P_ W w, int events)
271{
272 if (w->pending)
273 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events;
275 return;
276 }
277
278 w->pending = ++pendingcnt [ABSPRI (w)];
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280 pendings [ABSPRI (w)][w->pending - 1].w = w;
281 pendings [ABSPRI (w)][w->pending - 1].events = events;
282}
283
284static void
285queue_events (EV_P_ W *events, int eventcnt, int type)
286{
287 int i;
288
289 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type);
291}
292
293static void
294fd_event (EV_P_ int fd, int events) 672fd_event (EV_P_ int fd, int revents)
295{ 673{
296 ANFD *anfd = anfds + fd; 674 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 675 ev_io *w;
298 676
299 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300 { 678 {
301 int ev = w->events & events; 679 int ev = w->events & revents;
302 680
303 if (ev) 681 if (ev)
304 event (EV_A_ (W)w, ev); 682 ev_feed_event (EV_A_ (W)w, ev);
305 } 683 }
306} 684}
307 685
308/*****************************************************************************/ 686void
687ev_feed_fd_event (EV_P_ int fd, int revents)
688{
689 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents);
691}
309 692
310static void 693void inline_size
311fd_reify (EV_P) 694fd_reify (EV_P)
312{ 695{
313 int i; 696 int i;
314 697
315 for (i = 0; i < fdchangecnt; ++i) 698 for (i = 0; i < fdchangecnt; ++i)
316 { 699 {
317 int fd = fdchanges [i]; 700 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 701 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 702 ev_io *w;
320 703
321 int events = 0; 704 unsigned char events = 0;
322 705
323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 706 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
324 events |= w->events; 707 events |= (unsigned char)w->events;
325 708
709#if EV_SELECT_IS_WINSOCKET
710 if (events)
711 {
712 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
716 anfd->handle = _get_osfhandle (fd);
717 #endif
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719 }
720#endif
721
722 {
723 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify;
725
326 anfd->reify = 0; 726 anfd->reify = 0;
327
328 method_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 727 anfd->events = events;
728
729 if (o_events != events || o_reify & EV_IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events);
731 }
330 } 732 }
331 733
332 fdchangecnt = 0; 734 fdchangecnt = 0;
333} 735}
334 736
335static void 737void inline_size
336fd_change (EV_P_ int fd) 738fd_change (EV_P_ int fd, int flags)
337{ 739{
338 if (anfds [fd].reify || fdchangecnt < 0) 740 unsigned char reify = anfds [fd].reify;
339 return;
340
341 anfds [fd].reify = 1; 741 anfds [fd].reify |= flags;
342 742
743 if (expect_true (!reify))
744 {
343 ++fdchangecnt; 745 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 747 fdchanges [fdchangecnt - 1] = fd;
748 }
346} 749}
347 750
348static void 751void inline_speed
349fd_kill (EV_P_ int fd) 752fd_kill (EV_P_ int fd)
350{ 753{
351 struct ev_io *w; 754 ev_io *w;
352 755
353 while ((w = (struct ev_io *)anfds [fd].head)) 756 while ((w = (ev_io *)anfds [fd].head))
354 { 757 {
355 ev_io_stop (EV_A_ w); 758 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 760 }
761}
762
763int inline_size
764fd_valid (int fd)
765{
766#ifdef _WIN32
767 return _get_osfhandle (fd) != -1;
768#else
769 return fcntl (fd, F_GETFD) != -1;
770#endif
358} 771}
359 772
360/* called on EBADF to verify fds */ 773/* called on EBADF to verify fds */
361static void 774static void noinline
362fd_ebadf (EV_P) 775fd_ebadf (EV_P)
363{ 776{
364 int fd; 777 int fd;
365 778
366 for (fd = 0; fd < anfdmax; ++fd) 779 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 780 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 781 if (!fd_valid (fd) && errno == EBADF)
369 fd_kill (EV_A_ fd); 782 fd_kill (EV_A_ fd);
370} 783}
371 784
372/* called on ENOMEM in select/poll to kill some fds and retry */ 785/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 786static void noinline
374fd_enomem (EV_P) 787fd_enomem (EV_P)
375{ 788{
376 int fd; 789 int fd;
377 790
378 for (fd = anfdmax; fd--; ) 791 for (fd = anfdmax; fd--; )
379 if (anfds [fd].events) 792 if (anfds [fd].events)
380 { 793 {
381 close (fd);
382 fd_kill (EV_A_ fd); 794 fd_kill (EV_A_ fd);
383 return; 795 return;
384 } 796 }
385} 797}
386 798
387/* susually called after fork if method needs to re-arm all fds from scratch */ 799/* usually called after fork if backend needs to re-arm all fds from scratch */
388static void 800static void noinline
389fd_rearm_all (EV_P) 801fd_rearm_all (EV_P)
390{ 802{
391 int fd; 803 int fd;
392 804
393 /* this should be highly optimised to not do anything but set a flag */
394 for (fd = 0; fd < anfdmax; ++fd) 805 for (fd = 0; fd < anfdmax; ++fd)
395 if (anfds [fd].events) 806 if (anfds [fd].events)
396 { 807 {
397 anfds [fd].events = 0; 808 anfds [fd].events = 0;
398 fd_change (EV_A_ fd); 809 fd_change (EV_A_ fd, EV_IOFDSET | 1);
399 } 810 }
400} 811}
401 812
402/*****************************************************************************/ 813/*****************************************************************************/
403 814
404static void 815/*
405upheap (WT *heap, int k) 816 * the heap functions want a real array index. array index 0 uis guaranteed to not
406{ 817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
407 WT w = heap [k]; 818 * the branching factor of the d-tree.
819 */
408 820
409 while (k && heap [k >> 1]->at > w->at) 821/*
410 { 822 * at the moment we allow libev the luxury of two heaps,
411 heap [k] = heap [k >> 1]; 823 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
412 ((W)heap [k])->active = k + 1; 824 * which is more cache-efficient.
413 k >>= 1; 825 * the difference is about 5% with 50000+ watchers.
414 } 826 */
827#if EV_USE_4HEAP
415 828
416 heap [k] = w; 829#define DHEAP 4
417 ((W)heap [k])->active = k + 1; 830#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k))
418 833
419} 834/* away from the root */
420 835void inline_speed
421static void
422downheap (WT *heap, int N, int k) 836downheap (ANHE *heap, int N, int k)
423{ 837{
424 WT w = heap [k]; 838 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0;
425 840
426 while (k < (N >> 1)) 841 for (;;)
427 { 842 {
428 int j = k << 1; 843 ev_tstamp minat;
844 ANHE *minpos;
845 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
429 846
430 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 847 /* find minimum child */
848 if (expect_true (pos + DHEAP - 1 < E))
431 ++j; 849 {
432 850 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
433 if (w->at <= heap [j]->at) 851 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
852 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
853 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
854 }
855 else if (pos < E)
856 {
857 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
858 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
859 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
860 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
861 }
862 else
434 break; 863 break;
435 864
865 if (ANHE_at (he) <= minat)
866 break;
867
868 heap [k] = *minpos;
869 ev_active (ANHE_w (*minpos)) = k;
870
871 k = minpos - heap;
872 }
873
874 heap [k] = he;
875 ev_active (ANHE_w (he)) = k;
876}
877
878#else /* 4HEAP */
879
880#define HEAP0 1
881#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p))
883
884/* away from the root */
885void inline_speed
886downheap (ANHE *heap, int N, int k)
887{
888 ANHE he = heap [k];
889
890 for (;;)
891 {
892 int c = k << 1;
893
894 if (c > N + HEAP0 - 1)
895 break;
896
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0;
899
900 if (ANHE_at (he) <= ANHE_at (heap [c]))
901 break;
902
436 heap [k] = heap [j]; 903 heap [k] = heap [c];
437 ((W)heap [k])->active = k + 1; 904 ev_active (ANHE_w (heap [k])) = k;
905
438 k = j; 906 k = c;
439 } 907 }
440 908
441 heap [k] = w; 909 heap [k] = he;
442 ((W)heap [k])->active = k + 1; 910 ev_active (ANHE_w (he)) = k;
911}
912#endif
913
914/* towards the root */
915void inline_speed
916upheap (ANHE *heap, int k)
917{
918 ANHE he = heap [k];
919
920 for (;;)
921 {
922 int p = HPARENT (k);
923
924 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
925 break;
926
927 heap [k] = heap [p];
928 ev_active (ANHE_w (heap [k])) = k;
929 k = p;
930 }
931
932 heap [k] = he;
933 ev_active (ANHE_w (he)) = k;
934}
935
936void inline_size
937adjustheap (ANHE *heap, int N, int k)
938{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
940 upheap (heap, k);
941 else
942 downheap (heap, N, k);
943}
944
945/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size
947reheap (ANHE *heap, int N)
948{
949 int i;
950
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
952 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
953 for (i = 0; i < N; ++i)
954 upheap (heap, i + HEAP0);
443} 955}
444 956
445/*****************************************************************************/ 957/*****************************************************************************/
446 958
447typedef struct 959typedef struct
448{ 960{
449 struct ev_watcher_list *head; 961 WL head;
450 sig_atomic_t volatile gotsig; 962 EV_ATOMIC_T gotsig;
451} ANSIG; 963} ANSIG;
452 964
453static ANSIG *signals; 965static ANSIG *signals;
454static int signalmax; 966static int signalmax;
455 967
456static int sigpipe [2]; 968static EV_ATOMIC_T gotsig;
457static sig_atomic_t volatile gotsig;
458static struct ev_io sigev;
459 969
460static void 970void inline_size
461signals_init (ANSIG *base, int count) 971signals_init (ANSIG *base, int count)
462{ 972{
463 while (count--) 973 while (count--)
464 { 974 {
465 base->head = 0; 975 base->head = 0;
… …
467 977
468 ++base; 978 ++base;
469 } 979 }
470} 980}
471 981
982/*****************************************************************************/
983
984void inline_speed
985fd_intern (int fd)
986{
987#ifdef _WIN32
988 unsigned long arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif
994}
995
996static void noinline
997evpipe_init (EV_P)
998{
999 if (!ev_is_active (&pipeev))
1000 {
1001#if EV_USE_EVENTFD
1002 if ((evfd = eventfd (0, 0)) >= 0)
1003 {
1004 evpipe [0] = -1;
1005 fd_intern (evfd);
1006 ev_io_set (&pipeev, evfd, EV_READ);
1007 }
1008 else
1009#endif
1010 {
1011 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe");
1013
1014 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ);
1017 }
1018
1019 ev_io_start (EV_A_ &pipeev);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 }
1022}
1023
1024void inline_size
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{
1027 if (!*flag)
1028 {
1029 int old_errno = errno; /* save errno because write might clobber it */
1030
1031 *flag = 1;
1032
1033#if EV_USE_EVENTFD
1034 if (evfd >= 0)
1035 {
1036 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t));
1038 }
1039 else
1040#endif
1041 write (evpipe [1], &old_errno, 1);
1042
1043 errno = old_errno;
1044 }
1045}
1046
472static void 1047static void
1048pipecb (EV_P_ ev_io *iow, int revents)
1049{
1050#if EV_USE_EVENTFD
1051 if (evfd >= 0)
1052 {
1053 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t));
1055 }
1056 else
1057#endif
1058 {
1059 char dummy;
1060 read (evpipe [0], &dummy, 1);
1061 }
1062
1063 if (gotsig && ev_is_default_loop (EV_A))
1064 {
1065 int signum;
1066 gotsig = 0;
1067
1068 for (signum = signalmax; signum--; )
1069 if (signals [signum].gotsig)
1070 ev_feed_signal_event (EV_A_ signum + 1);
1071 }
1072
1073#if EV_ASYNC_ENABLE
1074 if (gotasync)
1075 {
1076 int i;
1077 gotasync = 0;
1078
1079 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent)
1081 {
1082 asyncs [i]->sent = 0;
1083 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1084 }
1085 }
1086#endif
1087}
1088
1089/*****************************************************************************/
1090
1091static void
473sighandler (int signum) 1092ev_sighandler (int signum)
474{ 1093{
1094#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct;
1096#endif
1097
475#if WIN32 1098#if _WIN32
476 signal (signum, sighandler); 1099 signal (signum, ev_sighandler);
477#endif 1100#endif
478 1101
479 signals [signum - 1].gotsig = 1; 1102 signals [signum - 1].gotsig = 1;
480 1103 evpipe_write (EV_A_ &gotsig);
481 if (!gotsig)
482 {
483 int old_errno = errno;
484 gotsig = 1;
485 write (sigpipe [1], &signum, 1);
486 errno = old_errno;
487 }
488} 1104}
489 1105
490static void 1106void noinline
491sigcb (EV_P_ struct ev_io *iow, int revents) 1107ev_feed_signal_event (EV_P_ int signum)
492{ 1108{
493 struct ev_watcher_list *w; 1109 WL w;
1110
1111#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113#endif
1114
494 int signum; 1115 --signum;
495 1116
496 read (sigpipe [0], &revents, 1); 1117 if (signum < 0 || signum >= signalmax)
497 gotsig = 0; 1118 return;
498 1119
499 for (signum = signalmax; signum--; )
500 if (signals [signum].gotsig)
501 {
502 signals [signum].gotsig = 0; 1120 signals [signum].gotsig = 0;
503 1121
504 for (w = signals [signum].head; w; w = w->next) 1122 for (w = signals [signum].head; w; w = w->next)
505 event (EV_A_ (W)w, EV_SIGNAL); 1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
506 }
507}
508
509static void
510siginit (EV_P)
511{
512#ifndef WIN32
513 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
514 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516 /* rather than sort out wether we really need nb, set it */
517 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519#endif
520
521 ev_io_set (&sigev, sigpipe [0], EV_READ);
522 ev_io_start (EV_A_ &sigev);
523 ev_unref (EV_A); /* child watcher should not keep loop alive */
524} 1124}
525 1125
526/*****************************************************************************/ 1126/*****************************************************************************/
527 1127
1128static WL childs [EV_PID_HASHSIZE];
1129
528#ifndef WIN32 1130#ifndef _WIN32
529 1131
530static struct ev_child *childs [PID_HASHSIZE];
531static struct ev_signal childev; 1132static ev_signal childev;
1133
1134#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0
1136#endif
1137
1138void inline_speed
1139child_reap (EV_P_ int chain, int pid, int status)
1140{
1141 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143
1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 {
1146 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1)))
1148 {
1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1150 w->rpid = pid;
1151 w->rstatus = status;
1152 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1153 }
1154 }
1155}
532 1156
533#ifndef WCONTINUED 1157#ifndef WCONTINUED
534# define WCONTINUED 0 1158# define WCONTINUED 0
535#endif 1159#endif
536 1160
537static void 1161static void
538child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
539{
540 struct ev_child *w;
541
542 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
543 if (w->pid == pid || !w->pid)
544 {
545 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
546 w->rpid = pid;
547 w->rstatus = status;
548 event (EV_A_ (W)w, EV_CHILD);
549 }
550}
551
552static void
553childcb (EV_P_ struct ev_signal *sw, int revents) 1162childcb (EV_P_ ev_signal *sw, int revents)
554{ 1163{
555 int pid, status; 1164 int pid, status;
556 1165
1166 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1167 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558 { 1168 if (!WCONTINUED
1169 || errno != EINVAL
1170 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1171 return;
1172
559 /* make sure we are called again until all childs have been reaped */ 1173 /* make sure we are called again until all children have been reaped */
1174 /* we need to do it this way so that the callback gets called before we continue */
560 event (EV_A_ (W)sw, EV_SIGNAL); 1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561 1176
562 child_reap (EV_A_ sw, pid, pid, status); 1177 child_reap (EV_A_ pid, pid, status);
1178 if (EV_PID_HASHSIZE > 1)
563 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564 }
565} 1180}
566 1181
567#endif 1182#endif
568 1183
569/*****************************************************************************/ 1184/*****************************************************************************/
570 1185
1186#if EV_USE_PORT
1187# include "ev_port.c"
1188#endif
571#if EV_USE_KQUEUE 1189#if EV_USE_KQUEUE
572# include "ev_kqueue.c" 1190# include "ev_kqueue.c"
573#endif 1191#endif
574#if EV_USE_EPOLL 1192#if EV_USE_EPOLL
575# include "ev_epoll.c" 1193# include "ev_epoll.c"
… …
592{ 1210{
593 return EV_VERSION_MINOR; 1211 return EV_VERSION_MINOR;
594} 1212}
595 1213
596/* return true if we are running with elevated privileges and should ignore env variables */ 1214/* return true if we are running with elevated privileges and should ignore env variables */
597static int 1215int inline_size
598enable_secure (void) 1216enable_secure (void)
599{ 1217{
600#ifdef WIN32 1218#ifdef _WIN32
601 return 0; 1219 return 0;
602#else 1220#else
603 return getuid () != geteuid () 1221 return getuid () != geteuid ()
604 || getgid () != getegid (); 1222 || getgid () != getegid ();
605#endif 1223#endif
606} 1224}
607 1225
608int 1226unsigned int
609ev_method (EV_P) 1227ev_supported_backends (void)
610{ 1228{
611 return method; 1229 unsigned int flags = 0;
612}
613 1230
614static void 1231 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
615loop_init (EV_P_ int methods) 1232 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1233 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1234 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1235 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1236
1237 return flags;
1238}
1239
1240unsigned int
1241ev_recommended_backends (void)
616{ 1242{
617 if (!method) 1243 unsigned int flags = ev_supported_backends ();
1244
1245#ifndef __NetBSD__
1246 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE;
1249#endif
1250#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation
1252 flags &= ~EVBACKEND_POLL;
1253#endif
1254
1255 return flags;
1256}
1257
1258unsigned int
1259ev_embeddable_backends (void)
1260{
1261 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1262
1263 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1264 /* please fix it and tell me how to detect the fix */
1265 flags &= ~EVBACKEND_EPOLL;
1266
1267 return flags;
1268}
1269
1270unsigned int
1271ev_backend (EV_P)
1272{
1273 return backend;
1274}
1275
1276unsigned int
1277ev_loop_count (EV_P)
1278{
1279 return loop_count;
1280}
1281
1282void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{
1285 io_blocktime = interval;
1286}
1287
1288void
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{
1291 timeout_blocktime = interval;
1292}
1293
1294static void noinline
1295loop_init (EV_P_ unsigned int flags)
1296{
1297 if (!backend)
618 { 1298 {
619#if EV_USE_MONOTONIC 1299#if EV_USE_MONOTONIC
620 { 1300 {
621 struct timespec ts; 1301 struct timespec ts;
622 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623 have_monotonic = 1; 1303 have_monotonic = 1;
624 } 1304 }
625#endif 1305#endif
626 1306
627 rt_now = ev_time (); 1307 ev_rt_now = ev_time ();
628 mn_now = get_clock (); 1308 mn_now = get_clock ();
629 now_floor = mn_now; 1309 now_floor = mn_now;
630 rtmn_diff = rt_now - mn_now; 1310 rtmn_diff = ev_rt_now - mn_now;
631 1311
632 if (methods == EVMETHOD_AUTO) 1312 io_blocktime = 0.;
633 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1313 timeout_blocktime = 0.;
1314 backend = 0;
1315 backend_fd = -1;
1316 gotasync = 0;
1317#if EV_USE_INOTIFY
1318 fs_fd = -2;
1319#endif
1320
1321 /* pid check not overridable via env */
1322#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK)
1324 curpid = getpid ();
1325#endif
1326
1327 if (!(flags & EVFLAG_NOENV)
1328 && !enable_secure ()
1329 && getenv ("LIBEV_FLAGS"))
634 methods = atoi (getenv ("LIBEV_METHODS")); 1330 flags = atoi (getenv ("LIBEV_FLAGS"));
635 else
636 methods = EVMETHOD_ANY;
637 1331
638 method = 0; 1332 if (!(flags & 0x0000ffffU))
639#if EV_USE_WIN32 1333 flags |= ev_recommended_backends ();
640 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1334
1335#if EV_USE_PORT
1336 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
641#endif 1337#endif
642#if EV_USE_KQUEUE 1338#if EV_USE_KQUEUE
643 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1339 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644#endif 1340#endif
645#if EV_USE_EPOLL 1341#if EV_USE_EPOLL
646 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1342 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647#endif 1343#endif
648#if EV_USE_POLL 1344#if EV_USE_POLL
649 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1345 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650#endif 1346#endif
651#if EV_USE_SELECT 1347#if EV_USE_SELECT
652 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653#endif 1349#endif
654 }
655}
656 1350
657void 1351 ev_init (&pipeev, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI);
1353 }
1354}
1355
1356static void noinline
658loop_destroy (EV_P) 1357loop_destroy (EV_P)
659{ 1358{
660 int i; 1359 int i;
661 1360
1361 if (ev_is_active (&pipeev))
1362 {
1363 ev_ref (EV_A); /* signal watcher */
1364 ev_io_stop (EV_A_ &pipeev);
1365
1366#if EV_USE_EVENTFD
1367 if (evfd >= 0)
1368 close (evfd);
1369#endif
1370
1371 if (evpipe [0] >= 0)
1372 {
1373 close (evpipe [0]);
1374 close (evpipe [1]);
1375 }
1376 }
1377
662#if EV_USE_WIN32 1378#if EV_USE_INOTIFY
663 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1379 if (fs_fd >= 0)
1380 close (fs_fd);
1381#endif
1382
1383 if (backend_fd >= 0)
1384 close (backend_fd);
1385
1386#if EV_USE_PORT
1387 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
664#endif 1388#endif
665#if EV_USE_KQUEUE 1389#if EV_USE_KQUEUE
666 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1390 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667#endif 1391#endif
668#if EV_USE_EPOLL 1392#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1393 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670#endif 1394#endif
671#if EV_USE_POLL 1395#if EV_USE_POLL
672 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1396 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673#endif 1397#endif
674#if EV_USE_SELECT 1398#if EV_USE_SELECT
675 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1399 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676#endif 1400#endif
677 1401
678 for (i = NUMPRI; i--; ) 1402 for (i = NUMPRI; i--; )
1403 {
679 array_free (pending, [i]); 1404 array_free (pending, [i]);
1405#if EV_IDLE_ENABLE
1406 array_free (idle, [i]);
1407#endif
1408 }
680 1409
1410 ev_free (anfds); anfdmax = 0;
1411
1412 /* have to use the microsoft-never-gets-it-right macro */
681 array_free (fdchange, ); 1413 array_free (fdchange, EMPTY);
682 array_free (timer, ); 1414 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE
683 array_free (periodic, ); 1416 array_free (periodic, EMPTY);
684 array_free (idle, ); 1417#endif
1418#if EV_FORK_ENABLE
1419 array_free (fork, EMPTY);
1420#endif
685 array_free (prepare, ); 1421 array_free (prepare, EMPTY);
686 array_free (check, ); 1422 array_free (check, EMPTY);
1423#if EV_ASYNC_ENABLE
1424 array_free (async, EMPTY);
1425#endif
687 1426
688 method = 0; 1427 backend = 0;
689 /*TODO*/
690} 1428}
691 1429
692void 1430#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P);
1432#endif
1433
1434void inline_size
693loop_fork (EV_P) 1435loop_fork (EV_P)
694{ 1436{
695 /*TODO*/ 1437#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif
1440#if EV_USE_KQUEUE
1441 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1442#endif
696#if EV_USE_EPOLL 1443#if EV_USE_EPOLL
697 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1444 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1445#endif
1446#if EV_USE_INOTIFY
1447 infy_fork (EV_A);
1448#endif
1449
1450 if (ev_is_active (&pipeev))
1451 {
1452 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */
1454 gotsig = 1;
1455#if EV_ASYNC_ENABLE
1456 gotasync = 1;
1457#endif
1458
1459 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev);
1461
1462#if EV_USE_EVENTFD
1463 if (evfd >= 0)
1464 close (evfd);
1465#endif
1466
1467 if (evpipe [0] >= 0)
1468 {
1469 close (evpipe [0]);
1470 close (evpipe [1]);
1471 }
1472
1473 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ);
1476 }
1477
1478 postfork = 0;
1479}
1480
1481#if EV_MULTIPLICITY
1482
1483struct ev_loop *
1484ev_loop_new (unsigned int flags)
1485{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487
1488 memset (loop, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags);
1491
1492 if (ev_backend (EV_A))
1493 return loop;
1494
1495 return 0;
1496}
1497
1498void
1499ev_loop_destroy (EV_P)
1500{
1501 loop_destroy (EV_A);
1502 ev_free (loop);
1503}
1504
1505void
1506ev_loop_fork (EV_P)
1507{
1508 postfork = 1; /* must be in line with ev_default_fork */
1509}
1510
1511#if EV_VERIFY
1512void noinline
1513verify_watcher (EV_P_ W w)
1514{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516
1517 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519}
1520
1521static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N)
1523{
1524 int i;
1525
1526 for (i = HEAP0; i < N + HEAP0; ++i)
1527 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 }
1534}
1535
1536static void noinline
1537array_verify (EV_P_ W *ws, int cnt)
1538{
1539 while (cnt--)
1540 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]);
1543 }
1544}
1545#endif
1546
1547void
1548ev_loop_verify (EV_P)
1549{
1550#if EV_VERIFY
1551 int i;
1552 WL w;
1553
1554 assert (activecnt >= -1);
1555
1556 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1559
1560 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next)
1563 {
1564 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 }
1568
1569 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt);
1571
1572#if EV_PERIODIC_ENABLE
1573 assert (periodicmax >= periodiccnt);
1574 verify_heap (EV_A_ periodics, periodiccnt);
1575#endif
1576
1577 for (i = NUMPRI; i--; )
1578 {
1579 assert (pendingmax [i] >= pendingcnt [i]);
1580#if EV_IDLE_ENABLE
1581 assert (idleall >= 0);
1582 assert (idlemax [i] >= idlecnt [i]);
1583 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1584#endif
1585 }
1586
1587#if EV_FORK_ENABLE
1588 assert (forkmax >= forkcnt);
1589 array_verify (EV_A_ (W *)forks, forkcnt);
1590#endif
1591
1592#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif
1596
1597 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt);
1599
1600 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt);
1602
1603# if 0
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
698#endif 1606# endif
699#if EV_USE_KQUEUE
700 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
701#endif 1607#endif
702} 1608}
1609
1610#endif /* multiplicity */
703 1611
704#if EV_MULTIPLICITY 1612#if EV_MULTIPLICITY
705struct ev_loop * 1613struct ev_loop *
706ev_loop_new (int methods) 1614ev_default_loop_init (unsigned int flags)
707{ 1615#else
708 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1616int
709 1617ev_default_loop (unsigned int flags)
710 loop_init (EV_A_ methods);
711
712 if (ev_method (EV_A))
713 return loop;
714
715 return 0;
716}
717
718void
719ev_loop_destroy (EV_P)
720{
721 loop_destroy (EV_A);
722 free (loop);
723}
724
725void
726ev_loop_fork (EV_P)
727{
728 loop_fork (EV_A);
729}
730
731#endif 1618#endif
732 1619{
1620 if (!ev_default_loop_ptr)
1621 {
733#if EV_MULTIPLICITY 1622#if EV_MULTIPLICITY
734struct ev_loop default_loop_struct; 1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
735static struct ev_loop *default_loop;
736
737struct ev_loop *
738#else 1624#else
739static int default_loop;
740
741int
742#endif
743ev_default_loop (int methods)
744{
745 if (sigpipe [0] == sigpipe [1])
746 if (pipe (sigpipe))
747 return 0;
748
749 if (!default_loop)
750 {
751#if EV_MULTIPLICITY
752 struct ev_loop *loop = default_loop = &default_loop_struct;
753#else
754 default_loop = 1; 1625 ev_default_loop_ptr = 1;
755#endif 1626#endif
756 1627
757 loop_init (EV_A_ methods); 1628 loop_init (EV_A_ flags);
758 1629
759 if (ev_method (EV_A)) 1630 if (ev_backend (EV_A))
760 { 1631 {
761 ev_watcher_init (&sigev, sigcb);
762 ev_set_priority (&sigev, EV_MAXPRI);
763 siginit (EV_A);
764
765#ifndef WIN32 1632#ifndef _WIN32
766 ev_signal_init (&childev, childcb, SIGCHLD); 1633 ev_signal_init (&childev, childcb, SIGCHLD);
767 ev_set_priority (&childev, EV_MAXPRI); 1634 ev_set_priority (&childev, EV_MAXPRI);
768 ev_signal_start (EV_A_ &childev); 1635 ev_signal_start (EV_A_ &childev);
769 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1636 ev_unref (EV_A); /* child watcher should not keep loop alive */
770#endif 1637#endif
771 } 1638 }
772 else 1639 else
773 default_loop = 0; 1640 ev_default_loop_ptr = 0;
774 } 1641 }
775 1642
776 return default_loop; 1643 return ev_default_loop_ptr;
777} 1644}
778 1645
779void 1646void
780ev_default_destroy (void) 1647ev_default_destroy (void)
781{ 1648{
782#if EV_MULTIPLICITY 1649#if EV_MULTIPLICITY
783 struct ev_loop *loop = default_loop; 1650 struct ev_loop *loop = ev_default_loop_ptr;
784#endif 1651#endif
785 1652
1653#ifndef _WIN32
786 ev_ref (EV_A); /* child watcher */ 1654 ev_ref (EV_A); /* child watcher */
787 ev_signal_stop (EV_A_ &childev); 1655 ev_signal_stop (EV_A_ &childev);
788 1656#endif
789 ev_ref (EV_A); /* signal watcher */
790 ev_io_stop (EV_A_ &sigev);
791
792 close (sigpipe [0]); sigpipe [0] = 0;
793 close (sigpipe [1]); sigpipe [1] = 0;
794 1657
795 loop_destroy (EV_A); 1658 loop_destroy (EV_A);
796} 1659}
797 1660
798void 1661void
799ev_default_fork (void) 1662ev_default_fork (void)
800{ 1663{
801#if EV_MULTIPLICITY 1664#if EV_MULTIPLICITY
802 struct ev_loop *loop = default_loop; 1665 struct ev_loop *loop = ev_default_loop_ptr;
803#endif 1666#endif
804 1667
805 loop_fork (EV_A); 1668 if (backend)
806 1669 postfork = 1; /* must be in line with ev_loop_fork */
807 ev_io_stop (EV_A_ &sigev);
808 close (sigpipe [0]);
809 close (sigpipe [1]);
810 pipe (sigpipe);
811
812 ev_ref (EV_A); /* signal watcher */
813 siginit (EV_A);
814} 1670}
815 1671
816/*****************************************************************************/ 1672/*****************************************************************************/
817 1673
818static void 1674void
1675ev_invoke (EV_P_ void *w, int revents)
1676{
1677 EV_CB_INVOKE ((W)w, revents);
1678}
1679
1680void inline_speed
819call_pending (EV_P) 1681call_pending (EV_P)
820{ 1682{
821 int pri; 1683 int pri;
822 1684
823 for (pri = NUMPRI; pri--; ) 1685 for (pri = NUMPRI; pri--; )
824 while (pendingcnt [pri]) 1686 while (pendingcnt [pri])
825 { 1687 {
826 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827 1689
828 if (p->w) 1690 if (expect_true (p->w))
829 { 1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1693
830 p->w->pending = 0; 1694 p->w->pending = 0;
831 p->w->cb (EV_A_ p->w, p->events); 1695 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK;
832 } 1697 }
833 } 1698 }
834} 1699}
835 1700
836static void 1701#if EV_IDLE_ENABLE
1702void inline_size
1703idle_reify (EV_P)
1704{
1705 if (expect_false (idleall))
1706 {
1707 int pri;
1708
1709 for (pri = NUMPRI; pri--; )
1710 {
1711 if (pendingcnt [pri])
1712 break;
1713
1714 if (idlecnt [pri])
1715 {
1716 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1717 break;
1718 }
1719 }
1720 }
1721}
1722#endif
1723
1724void inline_size
837timers_reify (EV_P) 1725timers_reify (EV_P)
838{ 1726{
1727 EV_FREQUENT_CHECK;
1728
839 while (timercnt && ((WT)timers [0])->at <= mn_now) 1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
840 { 1730 {
841 struct ev_timer *w = timers [0]; 1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
842 1732
843 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
844 1734
845 /* first reschedule or stop timer */ 1735 /* first reschedule or stop timer */
846 if (w->repeat) 1736 if (w->repeat)
847 { 1737 {
1738 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now;
1741
848 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
849 ((WT)w)->at = mn_now + w->repeat; 1743
1744 ANHE_at_cache (timers [HEAP0]);
850 downheap ((WT *)timers, timercnt, 0); 1745 downheap (timers, timercnt, HEAP0);
851 } 1746 }
852 else 1747 else
853 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854 1749
1750 EV_FREQUENT_CHECK;
855 event (EV_A_ (W)w, EV_TIMEOUT); 1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856 } 1752 }
857} 1753}
858 1754
859static void 1755#if EV_PERIODIC_ENABLE
1756void inline_size
860periodics_reify (EV_P) 1757periodics_reify (EV_P)
861{ 1758{
1759 EV_FREQUENT_CHECK;
1760
862 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
863 { 1762 {
864 struct ev_periodic *w = periodics [0]; 1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
865 1764
866 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
867 1766
868 /* first reschedule or stop timer */ 1767 /* first reschedule or stop timer */
869 if (w->interval) 1768 if (w->reschedule_cb)
870 { 1769 {
871 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
872 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1771
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773
1774 ANHE_at_cache (periodics [HEAP0]);
873 downheap ((WT *)periodics, periodiccnt, 0); 1775 downheap (periodics, periodiccnt, HEAP0);
1776 }
1777 else if (w->interval)
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
874 } 1795 }
875 else 1796 else
876 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877 1798
1799 EV_FREQUENT_CHECK;
878 event (EV_A_ (W)w, EV_PERIODIC); 1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879 } 1801 }
880} 1802}
881 1803
882static void 1804static void noinline
883periodics_reschedule (EV_P) 1805periodics_reschedule (EV_P)
884{ 1806{
885 int i; 1807 int i;
886 1808
887 /* adjust periodics after time jump */ 1809 /* adjust periodics after time jump */
888 for (i = 0; i < periodiccnt; ++i) 1810 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
889 { 1811 {
890 struct ev_periodic *w = periodics [i]; 1812 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
891 1813
1814 if (w->reschedule_cb)
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
892 if (w->interval) 1816 else if (w->interval)
1817 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1818
1819 ANHE_at_cache (periodics [i]);
1820 }
1821
1822 reheap (periodics, periodiccnt);
1823}
1824#endif
1825
1826void inline_speed
1827time_update (EV_P_ ev_tstamp max_block)
1828{
1829 int i;
1830
1831#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic))
1833 {
1834 ev_tstamp odiff = rtmn_diff;
1835
1836 mn_now = get_clock ();
1837
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1839 /* interpolate in the meantime */
1840 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
893 { 1841 {
894 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1842 ev_rt_now = rtmn_diff + mn_now;
1843 return;
1844 }
895 1845
896 if (fabs (diff) >= 1e-4) 1846 now_floor = mn_now;
1847 ev_rt_now = ev_time ();
1848
1849 /* loop a few times, before making important decisions.
1850 * on the choice of "4": one iteration isn't enough,
1851 * in case we get preempted during the calls to
1852 * ev_time and get_clock. a second call is almost guaranteed
1853 * to succeed in that case, though. and looping a few more times
1854 * doesn't hurt either as we only do this on time-jumps or
1855 * in the unlikely event of having been preempted here.
1856 */
1857 for (i = 4; --i; )
1858 {
1859 rtmn_diff = ev_rt_now - mn_now;
1860
1861 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1862 return; /* all is well */
1863
1864 ev_rt_now = ev_time ();
1865 mn_now = get_clock ();
1866 now_floor = mn_now;
1867 }
1868
1869# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A);
1871# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 }
1875 else
1876#endif
1877 {
1878 ev_rt_now = ev_time ();
1879
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 {
1882#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A);
1884#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
897 { 1887 {
898 ev_periodic_stop (EV_A_ w); 1888 ANHE *he = timers + i + HEAP0;
899 ev_periodic_start (EV_A_ w); 1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
900 1890 ANHE_at_cache (*he);
901 i = 0; /* restart loop, inefficient, but time jumps should be rare */
902 } 1891 }
903 } 1892 }
904 }
905}
906 1893
907inline int
908time_update_monotonic (EV_P)
909{
910 mn_now = get_clock ();
911
912 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913 {
914 rt_now = rtmn_diff + mn_now;
915 return 0;
916 }
917 else
918 {
919 now_floor = mn_now;
920 rt_now = ev_time ();
921 return 1;
922 }
923}
924
925static void
926time_update (EV_P)
927{
928 int i;
929
930#if EV_USE_MONOTONIC
931 if (expect_true (have_monotonic))
932 {
933 if (time_update_monotonic (EV_A))
934 {
935 ev_tstamp odiff = rtmn_diff;
936
937 for (i = 4; --i; ) /* loop a few times, before making important decisions */
938 {
939 rtmn_diff = rt_now - mn_now;
940
941 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942 return; /* all is well */
943
944 rt_now = ev_time ();
945 mn_now = get_clock ();
946 now_floor = mn_now;
947 }
948
949 periodics_reschedule (EV_A);
950 /* no timer adjustment, as the monotonic clock doesn't jump */
951 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
952 }
953 }
954 else
955#endif
956 {
957 rt_now = ev_time ();
958
959 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960 {
961 periodics_reschedule (EV_A);
962
963 /* adjust timers. this is easy, as the offset is the same for all */
964 for (i = 0; i < timercnt; ++i)
965 ((WT)timers [i])->at += rt_now - mn_now;
966 }
967
968 mn_now = rt_now; 1894 mn_now = ev_rt_now;
969 } 1895 }
970} 1896}
971 1897
972void 1898void
973ev_ref (EV_P) 1899ev_ref (EV_P)
… …
984static int loop_done; 1910static int loop_done;
985 1911
986void 1912void
987ev_loop (EV_P_ int flags) 1913ev_loop (EV_P_ int flags)
988{ 1914{
989 double block; 1915 loop_done = EVUNLOOP_CANCEL;
990 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1916
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
991 1918
992 do 1919 do
993 { 1920 {
1921#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A);
1923#endif
1924
1925#ifndef _WIN32
1926 if (expect_false (curpid)) /* penalise the forking check even more */
1927 if (expect_false (getpid () != curpid))
1928 {
1929 curpid = getpid ();
1930 postfork = 1;
1931 }
1932#endif
1933
1934#if EV_FORK_ENABLE
1935 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork))
1937 if (forkcnt)
1938 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A);
1941 }
1942#endif
1943
994 /* queue check watchers (and execute them) */ 1944 /* queue prepare watchers (and execute them) */
995 if (expect_false (preparecnt)) 1945 if (expect_false (preparecnt))
996 { 1946 {
997 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998 call_pending (EV_A); 1948 call_pending (EV_A);
999 } 1949 }
1000 1950
1951 if (expect_false (!activecnt))
1952 break;
1953
1954 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork))
1956 loop_fork (EV_A);
1957
1001 /* update fd-related kernel structures */ 1958 /* update fd-related kernel structures */
1002 fd_reify (EV_A); 1959 fd_reify (EV_A);
1003 1960
1004 /* calculate blocking time */ 1961 /* calculate blocking time */
1962 {
1963 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.;
1005 1965
1006 /* we only need this for !monotonic clockor timers, but as we basically 1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1007 always have timers, we just calculate it always */
1008#if EV_USE_MONOTONIC
1009 if (expect_true (have_monotonic))
1010 time_update_monotonic (EV_A);
1011 else
1012#endif
1013 { 1967 {
1014 rt_now = ev_time (); 1968 /* update time to cancel out callback processing overhead */
1015 mn_now = rt_now; 1969 time_update (EV_A_ 1e100);
1016 }
1017 1970
1018 if (flags & EVLOOP_NONBLOCK || idlecnt)
1019 block = 0.;
1020 else
1021 {
1022 block = MAX_BLOCKTIME; 1971 waittime = MAX_BLOCKTIME;
1023 1972
1024 if (timercnt) 1973 if (timercnt)
1025 { 1974 {
1026 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1027 if (block > to) block = to; 1976 if (waittime > to) waittime = to;
1028 } 1977 }
1029 1978
1979#if EV_PERIODIC_ENABLE
1030 if (periodiccnt) 1980 if (periodiccnt)
1031 { 1981 {
1032 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1033 if (block > to) block = to; 1983 if (waittime > to) waittime = to;
1034 } 1984 }
1985#endif
1035 1986
1036 if (block < 0.) block = 0.; 1987 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime;
1989
1990 sleeptime = waittime - backend_fudge;
1991
1992 if (expect_true (sleeptime > io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 {
1997 ev_sleep (sleeptime);
1998 waittime -= sleeptime;
1999 }
1037 } 2000 }
1038 2001
1039 method_poll (EV_A_ block); 2002 ++loop_count;
2003 backend_poll (EV_A_ waittime);
1040 2004
1041 /* update rt_now, do magic */ 2005 /* update ev_rt_now, do magic */
1042 time_update (EV_A); 2006 time_update (EV_A_ waittime + sleeptime);
2007 }
1043 2008
1044 /* queue pending timers and reschedule them */ 2009 /* queue pending timers and reschedule them */
1045 timers_reify (EV_A); /* relative timers called last */ 2010 timers_reify (EV_A); /* relative timers called last */
2011#if EV_PERIODIC_ENABLE
1046 periodics_reify (EV_A); /* absolute timers called first */ 2012 periodics_reify (EV_A); /* absolute timers called first */
2013#endif
1047 2014
2015#if EV_IDLE_ENABLE
1048 /* queue idle watchers unless io or timers are pending */ 2016 /* queue idle watchers unless other events are pending */
1049 if (!pendingcnt) 2017 idle_reify (EV_A);
1050 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2018#endif
1051 2019
1052 /* queue check watchers, to be executed first */ 2020 /* queue check watchers, to be executed first */
1053 if (checkcnt) 2021 if (expect_false (checkcnt))
1054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055 2023
1056 call_pending (EV_A); 2024 call_pending (EV_A);
1057 } 2025 }
1058 while (activecnt && !loop_done); 2026 while (expect_true (
2027 activecnt
2028 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 ));
1059 2031
1060 if (loop_done != 2) 2032 if (loop_done == EVUNLOOP_ONE)
1061 loop_done = 0; 2033 loop_done = EVUNLOOP_CANCEL;
1062} 2034}
1063 2035
1064void 2036void
1065ev_unloop (EV_P_ int how) 2037ev_unloop (EV_P_ int how)
1066{ 2038{
1067 loop_done = how; 2039 loop_done = how;
1068} 2040}
1069 2041
1070/*****************************************************************************/ 2042/*****************************************************************************/
1071 2043
1072inline void 2044void inline_size
1073wlist_add (WL *head, WL elem) 2045wlist_add (WL *head, WL elem)
1074{ 2046{
1075 elem->next = *head; 2047 elem->next = *head;
1076 *head = elem; 2048 *head = elem;
1077} 2049}
1078 2050
1079inline void 2051void inline_size
1080wlist_del (WL *head, WL elem) 2052wlist_del (WL *head, WL elem)
1081{ 2053{
1082 while (*head) 2054 while (*head)
1083 { 2055 {
1084 if (*head == elem) 2056 if (*head == elem)
… …
1089 2061
1090 head = &(*head)->next; 2062 head = &(*head)->next;
1091 } 2063 }
1092} 2064}
1093 2065
1094inline void 2066void inline_speed
1095ev_clear_pending (EV_P_ W w) 2067clear_pending (EV_P_ W w)
1096{ 2068{
1097 if (w->pending) 2069 if (w->pending)
1098 { 2070 {
1099 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2071 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100 w->pending = 0; 2072 w->pending = 0;
1101 } 2073 }
1102} 2074}
1103 2075
1104inline void 2076int
2077ev_clear_pending (EV_P_ void *w)
2078{
2079 W w_ = (W)w;
2080 int pending = w_->pending;
2081
2082 if (expect_true (pending))
2083 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2085 w_->pending = 0;
2086 p->w = 0;
2087 return p->events;
2088 }
2089 else
2090 return 0;
2091}
2092
2093void inline_size
2094pri_adjust (EV_P_ W w)
2095{
2096 int pri = w->priority;
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri;
2100}
2101
2102void inline_speed
1105ev_start (EV_P_ W w, int active) 2103ev_start (EV_P_ W w, int active)
1106{ 2104{
1107 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2105 pri_adjust (EV_A_ w);
1108 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109
1110 w->active = active; 2106 w->active = active;
1111 ev_ref (EV_A); 2107 ev_ref (EV_A);
1112} 2108}
1113 2109
1114inline void 2110void inline_size
1115ev_stop (EV_P_ W w) 2111ev_stop (EV_P_ W w)
1116{ 2112{
1117 ev_unref (EV_A); 2113 ev_unref (EV_A);
1118 w->active = 0; 2114 w->active = 0;
1119} 2115}
1120 2116
1121/*****************************************************************************/ 2117/*****************************************************************************/
1122 2118
1123void 2119void noinline
1124ev_io_start (EV_P_ struct ev_io *w) 2120ev_io_start (EV_P_ ev_io *w)
1125{ 2121{
1126 int fd = w->fd; 2122 int fd = w->fd;
1127 2123
1128 if (ev_is_active (w)) 2124 if (expect_false (ev_is_active (w)))
1129 return; 2125 return;
1130 2126
1131 assert (("ev_io_start called with negative fd", fd >= 0)); 2127 assert (("ev_io_start called with negative fd", fd >= 0));
1132 2128
2129 EV_FREQUENT_CHECK;
2130
1133 ev_start (EV_A_ (W)w, 1); 2131 ev_start (EV_A_ (W)w, 1);
1134 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2133 wlist_add (&anfds[fd].head, (WL)w);
1136 2134
1137 fd_change (EV_A_ fd); 2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1138} 2136 w->events &= ~EV_IOFDSET;
1139 2137
1140void 2138 EV_FREQUENT_CHECK;
2139}
2140
2141void noinline
1141ev_io_stop (EV_P_ struct ev_io *w) 2142ev_io_stop (EV_P_ ev_io *w)
1142{ 2143{
1143 ev_clear_pending (EV_A_ (W)w); 2144 clear_pending (EV_A_ (W)w);
1144 if (!ev_is_active (w)) 2145 if (expect_false (!ev_is_active (w)))
1145 return; 2146 return;
1146 2147
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149
2150 EV_FREQUENT_CHECK;
2151
1147 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2152 wlist_del (&anfds[w->fd].head, (WL)w);
1148 ev_stop (EV_A_ (W)w); 2153 ev_stop (EV_A_ (W)w);
1149 2154
1150 fd_change (EV_A_ w->fd); 2155 fd_change (EV_A_ w->fd, 1);
1151}
1152 2156
1153void 2157 EV_FREQUENT_CHECK;
2158}
2159
2160void noinline
1154ev_timer_start (EV_P_ struct ev_timer *w) 2161ev_timer_start (EV_P_ ev_timer *w)
1155{ 2162{
1156 if (ev_is_active (w)) 2163 if (expect_false (ev_is_active (w)))
1157 return; 2164 return;
1158 2165
1159 ((WT)w)->at += mn_now; 2166 ev_at (w) += mn_now;
1160 2167
1161 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162 2169
2170 EV_FREQUENT_CHECK;
2171
2172 ++timercnt;
1163 ev_start (EV_A_ (W)w, ++timercnt); 2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1164 array_needsize (timers, timermax, timercnt, ); 2174 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1165 timers [timercnt - 1] = w; 2175 ANHE_w (timers [ev_active (w)]) = (WT)w;
1166 upheap ((WT *)timers, timercnt - 1); 2176 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w));
1167 2178
2179 EV_FREQUENT_CHECK;
2180
1168 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1169} 2182}
1170 2183
1171void 2184void noinline
1172ev_timer_stop (EV_P_ struct ev_timer *w) 2185ev_timer_stop (EV_P_ ev_timer *w)
1173{ 2186{
1174 ev_clear_pending (EV_A_ (W)w); 2187 clear_pending (EV_A_ (W)w);
1175 if (!ev_is_active (w)) 2188 if (expect_false (!ev_is_active (w)))
1176 return; 2189 return;
1177 2190
2191 EV_FREQUENT_CHECK;
2192
2193 {
2194 int active = ev_active (w);
2195
1178 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1179 2197
1180 if (((W)w)->active < timercnt--) 2198 --timercnt;
2199
2200 if (expect_true (active < timercnt + HEAP0))
1181 { 2201 {
1182 timers [((W)w)->active - 1] = timers [timercnt]; 2202 timers [active] = timers [timercnt + HEAP0];
1183 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2203 adjustheap (timers, timercnt, active);
1184 } 2204 }
2205 }
1185 2206
1186 ((WT)w)->at = w->repeat; 2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now;
1187 2210
1188 ev_stop (EV_A_ (W)w); 2211 ev_stop (EV_A_ (W)w);
1189} 2212}
1190 2213
1191void 2214void noinline
1192ev_timer_again (EV_P_ struct ev_timer *w) 2215ev_timer_again (EV_P_ ev_timer *w)
1193{ 2216{
2217 EV_FREQUENT_CHECK;
2218
1194 if (ev_is_active (w)) 2219 if (ev_is_active (w))
1195 { 2220 {
1196 if (w->repeat) 2221 if (w->repeat)
1197 { 2222 {
1198 ((WT)w)->at = mn_now + w->repeat; 2223 ev_at (w) = mn_now + w->repeat;
1199 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2224 ANHE_at_cache (timers [ev_active (w)]);
2225 adjustheap (timers, timercnt, ev_active (w));
1200 } 2226 }
1201 else 2227 else
1202 ev_timer_stop (EV_A_ w); 2228 ev_timer_stop (EV_A_ w);
1203 } 2229 }
1204 else if (w->repeat) 2230 else if (w->repeat)
2231 {
2232 ev_at (w) = w->repeat;
1205 ev_timer_start (EV_A_ w); 2233 ev_timer_start (EV_A_ w);
1206} 2234 }
1207 2235
1208void 2236 EV_FREQUENT_CHECK;
2237}
2238
2239#if EV_PERIODIC_ENABLE
2240void noinline
1209ev_periodic_start (EV_P_ struct ev_periodic *w) 2241ev_periodic_start (EV_P_ ev_periodic *w)
1210{ 2242{
1211 if (ev_is_active (w)) 2243 if (expect_false (ev_is_active (w)))
1212 return; 2244 return;
1213 2245
2246 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval)
2249 {
1214 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1215
1216 /* this formula differs from the one in periodic_reify because we do not always round up */ 2251 /* this formula differs from the one in periodic_reify because we do not always round up */
1217 if (w->interval)
1218 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 }
2254 else
2255 ev_at (w) = w->offset;
1219 2256
2257 EV_FREQUENT_CHECK;
2258
2259 ++periodiccnt;
1220 ev_start (EV_A_ (W)w, ++periodiccnt); 2260 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1221 array_needsize (periodics, periodicmax, periodiccnt, ); 2261 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1222 periodics [periodiccnt - 1] = w; 2262 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1223 upheap ((WT *)periodics, periodiccnt - 1); 2263 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w));
1224 2265
2266 EV_FREQUENT_CHECK;
2267
1225 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1226} 2269}
1227 2270
1228void 2271void noinline
1229ev_periodic_stop (EV_P_ struct ev_periodic *w) 2272ev_periodic_stop (EV_P_ ev_periodic *w)
1230{ 2273{
1231 ev_clear_pending (EV_A_ (W)w); 2274 clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w)) 2275 if (expect_false (!ev_is_active (w)))
1233 return; 2276 return;
1234 2277
2278 EV_FREQUENT_CHECK;
2279
2280 {
2281 int active = ev_active (w);
2282
1235 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1236 2284
1237 if (((W)w)->active < periodiccnt--) 2285 --periodiccnt;
2286
2287 if (expect_true (active < periodiccnt + HEAP0))
1238 { 2288 {
1239 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2289 periodics [active] = periodics [periodiccnt + HEAP0];
1240 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2290 adjustheap (periodics, periodiccnt, active);
1241 } 2291 }
2292 }
2293
2294 EV_FREQUENT_CHECK;
1242 2295
1243 ev_stop (EV_A_ (W)w); 2296 ev_stop (EV_A_ (W)w);
1244} 2297}
1245 2298
1246void 2299void noinline
1247ev_idle_start (EV_P_ struct ev_idle *w) 2300ev_periodic_again (EV_P_ ev_periodic *w)
1248{ 2301{
1249 if (ev_is_active (w)) 2302 /* TODO: use adjustheap and recalculation */
1250 return;
1251
1252 ev_start (EV_A_ (W)w, ++idlecnt);
1253 array_needsize (idles, idlemax, idlecnt, );
1254 idles [idlecnt - 1] = w;
1255}
1256
1257void
1258ev_idle_stop (EV_P_ struct ev_idle *w)
1259{
1260 ev_clear_pending (EV_A_ (W)w);
1261 if (ev_is_active (w))
1262 return;
1263
1264 idles [((W)w)->active - 1] = idles [--idlecnt];
1265 ev_stop (EV_A_ (W)w); 2303 ev_periodic_stop (EV_A_ w);
2304 ev_periodic_start (EV_A_ w);
1266} 2305}
1267 2306#endif
1268void
1269ev_prepare_start (EV_P_ struct ev_prepare *w)
1270{
1271 if (ev_is_active (w))
1272 return;
1273
1274 ev_start (EV_A_ (W)w, ++preparecnt);
1275 array_needsize (prepares, preparemax, preparecnt, );
1276 prepares [preparecnt - 1] = w;
1277}
1278
1279void
1280ev_prepare_stop (EV_P_ struct ev_prepare *w)
1281{
1282 ev_clear_pending (EV_A_ (W)w);
1283 if (ev_is_active (w))
1284 return;
1285
1286 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1287 ev_stop (EV_A_ (W)w);
1288}
1289
1290void
1291ev_check_start (EV_P_ struct ev_check *w)
1292{
1293 if (ev_is_active (w))
1294 return;
1295
1296 ev_start (EV_A_ (W)w, ++checkcnt);
1297 array_needsize (checks, checkmax, checkcnt, );
1298 checks [checkcnt - 1] = w;
1299}
1300
1301void
1302ev_check_stop (EV_P_ struct ev_check *w)
1303{
1304 ev_clear_pending (EV_A_ (W)w);
1305 if (ev_is_active (w))
1306 return;
1307
1308 checks [((W)w)->active - 1] = checks [--checkcnt];
1309 ev_stop (EV_A_ (W)w);
1310}
1311 2307
1312#ifndef SA_RESTART 2308#ifndef SA_RESTART
1313# define SA_RESTART 0 2309# define SA_RESTART 0
1314#endif 2310#endif
1315 2311
1316void 2312void noinline
1317ev_signal_start (EV_P_ struct ev_signal *w) 2313ev_signal_start (EV_P_ ev_signal *w)
1318{ 2314{
1319#if EV_MULTIPLICITY 2315#if EV_MULTIPLICITY
1320 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321#endif 2317#endif
1322 if (ev_is_active (w)) 2318 if (expect_false (ev_is_active (w)))
1323 return; 2319 return;
1324 2320
1325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1326 2322
2323 evpipe_init (EV_A);
2324
2325 EV_FREQUENT_CHECK;
2326
2327 {
2328#ifndef _WIN32
2329 sigset_t full, prev;
2330 sigfillset (&full);
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2335
2336#ifndef _WIN32
2337 sigprocmask (SIG_SETMASK, &prev, 0);
2338#endif
2339 }
2340
1327 ev_start (EV_A_ (W)w, 1); 2341 ev_start (EV_A_ (W)w, 1);
1328 array_needsize (signals, signalmax, w->signum, signals_init);
1329 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2342 wlist_add (&signals [w->signum - 1].head, (WL)w);
1330 2343
1331 if (!((WL)w)->next) 2344 if (!((WL)w)->next)
1332 { 2345 {
1333#if WIN32 2346#if _WIN32
1334 signal (w->signum, sighandler); 2347 signal (w->signum, ev_sighandler);
1335#else 2348#else
1336 struct sigaction sa; 2349 struct sigaction sa;
1337 sa.sa_handler = sighandler; 2350 sa.sa_handler = ev_sighandler;
1338 sigfillset (&sa.sa_mask); 2351 sigfillset (&sa.sa_mask);
1339 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1340 sigaction (w->signum, &sa, 0); 2353 sigaction (w->signum, &sa, 0);
1341#endif 2354#endif
1342 } 2355 }
1343}
1344 2356
1345void 2357 EV_FREQUENT_CHECK;
2358}
2359
2360void noinline
1346ev_signal_stop (EV_P_ struct ev_signal *w) 2361ev_signal_stop (EV_P_ ev_signal *w)
1347{ 2362{
1348 ev_clear_pending (EV_A_ (W)w); 2363 clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w)) 2364 if (expect_false (!ev_is_active (w)))
1350 return; 2365 return;
1351 2366
2367 EV_FREQUENT_CHECK;
2368
1352 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2369 wlist_del (&signals [w->signum - 1].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 2370 ev_stop (EV_A_ (W)w);
1354 2371
1355 if (!signals [w->signum - 1].head) 2372 if (!signals [w->signum - 1].head)
1356 signal (w->signum, SIG_DFL); 2373 signal (w->signum, SIG_DFL);
1357}
1358 2374
2375 EV_FREQUENT_CHECK;
2376}
2377
1359void 2378void
1360ev_child_start (EV_P_ struct ev_child *w) 2379ev_child_start (EV_P_ ev_child *w)
1361{ 2380{
1362#if EV_MULTIPLICITY 2381#if EV_MULTIPLICITY
1363 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1364#endif 2383#endif
1365 if (ev_is_active (w)) 2384 if (expect_false (ev_is_active (w)))
1366 return; 2385 return;
1367 2386
2387 EV_FREQUENT_CHECK;
2388
1368 ev_start (EV_A_ (W)w, 1); 2389 ev_start (EV_A_ (W)w, 1);
1369 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1370}
1371 2391
2392 EV_FREQUENT_CHECK;
2393}
2394
1372void 2395void
1373ev_child_stop (EV_P_ struct ev_child *w) 2396ev_child_stop (EV_P_ ev_child *w)
1374{ 2397{
1375 ev_clear_pending (EV_A_ (W)w); 2398 clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 2399 if (expect_false (!ev_is_active (w)))
1377 return; 2400 return;
1378 2401
2402 EV_FREQUENT_CHECK;
2403
1379 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1380 ev_stop (EV_A_ (W)w); 2405 ev_stop (EV_A_ (W)w);
2406
2407 EV_FREQUENT_CHECK;
1381} 2408}
2409
2410#if EV_STAT_ENABLE
2411
2412# ifdef _WIN32
2413# undef lstat
2414# define lstat(a,b) _stati64 (a,b)
2415# endif
2416
2417#define DEF_STAT_INTERVAL 5.0074891
2418#define MIN_STAT_INTERVAL 0.1074891
2419
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421
2422#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192
2424
2425static void noinline
2426infy_add (EV_P_ ev_stat *w)
2427{
2428 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);
2429
2430 if (w->wd < 0)
2431 {
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433
2434 /* monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */
2436 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 {
2439 char path [4096];
2440 strcpy (path, w->path);
2441
2442 do
2443 {
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446
2447 char *pend = strrchr (path, '/');
2448
2449 if (!pend)
2450 break; /* whoops, no '/', complain to your admin */
2451
2452 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 }
2457 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460
2461 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2463}
2464
2465static void noinline
2466infy_del (EV_P_ ev_stat *w)
2467{
2468 int slot;
2469 int wd = w->wd;
2470
2471 if (wd < 0)
2472 return;
2473
2474 w->wd = -2;
2475 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2476 wlist_del (&fs_hash [slot].head, (WL)w);
2477
2478 /* remove this watcher, if others are watching it, they will rearm */
2479 inotify_rm_watch (fs_fd, wd);
2480}
2481
2482static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{
2485 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488 infy_wd (EV_A_ slot, wd, ev);
2489 else
2490 {
2491 WL w_;
2492
2493 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2494 {
2495 ev_stat *w = (ev_stat *)w_;
2496 w_ = w_->next; /* lets us remove this watcher and all before it */
2497
2498 if (w->wd == wd || wd == -1)
2499 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 {
2502 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */
2504 }
2505
2506 stat_timer_cb (EV_A_ &w->timer, 0);
2507 }
2508 }
2509 }
2510}
2511
2512static void
2513infy_cb (EV_P_ ev_io *w, int revents)
2514{
2515 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf));
2519
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522}
2523
2524void inline_size
2525infy_init (EV_P)
2526{
2527 if (fs_fd != -2)
2528 return;
2529
2530 fs_fd = inotify_init ();
2531
2532 if (fs_fd >= 0)
2533 {
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w);
2537 }
2538}
2539
2540void inline_size
2541infy_fork (EV_P)
2542{
2543 int slot;
2544
2545 if (fs_fd < 0)
2546 return;
2547
2548 close (fs_fd);
2549 fs_fd = inotify_init ();
2550
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2552 {
2553 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0;
2555
2556 while (w_)
2557 {
2558 ev_stat *w = (ev_stat *)w_;
2559 w_ = w_->next; /* lets us add this watcher */
2560
2561 w->wd = -1;
2562
2563 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else
2566 ev_timer_start (EV_A_ &w->timer);
2567 }
2568
2569 }
2570}
2571
2572#endif
2573
2574#ifdef _WIN32
2575# define EV_LSTAT(p,b) _stati64 (p, b)
2576#else
2577# define EV_LSTAT(p,b) lstat (p, b)
2578#endif
2579
2580void
2581ev_stat_stat (EV_P_ ev_stat *w)
2582{
2583 if (lstat (w->path, &w->attr) < 0)
2584 w->attr.st_nlink = 0;
2585 else if (!w->attr.st_nlink)
2586 w->attr.st_nlink = 1;
2587}
2588
2589static void noinline
2590stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2591{
2592 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2593
2594 /* we copy this here each the time so that */
2595 /* prev has the old value when the callback gets invoked */
2596 w->prev = w->attr;
2597 ev_stat_stat (EV_A_ w);
2598
2599 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2600 if (
2601 w->prev.st_dev != w->attr.st_dev
2602 || w->prev.st_ino != w->attr.st_ino
2603 || w->prev.st_mode != w->attr.st_mode
2604 || w->prev.st_nlink != w->attr.st_nlink
2605 || w->prev.st_uid != w->attr.st_uid
2606 || w->prev.st_gid != w->attr.st_gid
2607 || w->prev.st_rdev != w->attr.st_rdev
2608 || w->prev.st_size != w->attr.st_size
2609 || w->prev.st_atime != w->attr.st_atime
2610 || w->prev.st_mtime != w->attr.st_mtime
2611 || w->prev.st_ctime != w->attr.st_ctime
2612 ) {
2613 #if EV_USE_INOTIFY
2614 infy_del (EV_A_ w);
2615 infy_add (EV_A_ w);
2616 ev_stat_stat (EV_A_ w); /* avoid race... */
2617 #endif
2618
2619 ev_feed_event (EV_A_ w, EV_STAT);
2620 }
2621}
2622
2623void
2624ev_stat_start (EV_P_ ev_stat *w)
2625{
2626 if (expect_false (ev_is_active (w)))
2627 return;
2628
2629 /* since we use memcmp, we need to clear any padding data etc. */
2630 memset (&w->prev, 0, sizeof (ev_statdata));
2631 memset (&w->attr, 0, sizeof (ev_statdata));
2632
2633 ev_stat_stat (EV_A_ w);
2634
2635 if (w->interval < MIN_STAT_INTERVAL)
2636 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2637
2638 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2639 ev_set_priority (&w->timer, ev_priority (w));
2640
2641#if EV_USE_INOTIFY
2642 infy_init (EV_A);
2643
2644 if (fs_fd >= 0)
2645 infy_add (EV_A_ w);
2646 else
2647#endif
2648 ev_timer_start (EV_A_ &w->timer);
2649
2650 ev_start (EV_A_ (W)w, 1);
2651
2652 EV_FREQUENT_CHECK;
2653}
2654
2655void
2656ev_stat_stop (EV_P_ ev_stat *w)
2657{
2658 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w)))
2660 return;
2661
2662 EV_FREQUENT_CHECK;
2663
2664#if EV_USE_INOTIFY
2665 infy_del (EV_A_ w);
2666#endif
2667 ev_timer_stop (EV_A_ &w->timer);
2668
2669 ev_stop (EV_A_ (W)w);
2670
2671 EV_FREQUENT_CHECK;
2672}
2673#endif
2674
2675#if EV_IDLE_ENABLE
2676void
2677ev_idle_start (EV_P_ ev_idle *w)
2678{
2679 if (expect_false (ev_is_active (w)))
2680 return;
2681
2682 pri_adjust (EV_A_ (W)w);
2683
2684 EV_FREQUENT_CHECK;
2685
2686 {
2687 int active = ++idlecnt [ABSPRI (w)];
2688
2689 ++idleall;
2690 ev_start (EV_A_ (W)w, active);
2691
2692 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2693 idles [ABSPRI (w)][active - 1] = w;
2694 }
2695
2696 EV_FREQUENT_CHECK;
2697}
2698
2699void
2700ev_idle_stop (EV_P_ ev_idle *w)
2701{
2702 clear_pending (EV_A_ (W)w);
2703 if (expect_false (!ev_is_active (w)))
2704 return;
2705
2706 EV_FREQUENT_CHECK;
2707
2708 {
2709 int active = ev_active (w);
2710
2711 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2712 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2713
2714 ev_stop (EV_A_ (W)w);
2715 --idleall;
2716 }
2717
2718 EV_FREQUENT_CHECK;
2719}
2720#endif
2721
2722void
2723ev_prepare_start (EV_P_ ev_prepare *w)
2724{
2725 if (expect_false (ev_is_active (w)))
2726 return;
2727
2728 EV_FREQUENT_CHECK;
2729
2730 ev_start (EV_A_ (W)w, ++preparecnt);
2731 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2732 prepares [preparecnt - 1] = w;
2733
2734 EV_FREQUENT_CHECK;
2735}
2736
2737void
2738ev_prepare_stop (EV_P_ ev_prepare *w)
2739{
2740 clear_pending (EV_A_ (W)w);
2741 if (expect_false (!ev_is_active (w)))
2742 return;
2743
2744 EV_FREQUENT_CHECK;
2745
2746 {
2747 int active = ev_active (w);
2748
2749 prepares [active - 1] = prepares [--preparecnt];
2750 ev_active (prepares [active - 1]) = active;
2751 }
2752
2753 ev_stop (EV_A_ (W)w);
2754
2755 EV_FREQUENT_CHECK;
2756}
2757
2758void
2759ev_check_start (EV_P_ ev_check *w)
2760{
2761 if (expect_false (ev_is_active (w)))
2762 return;
2763
2764 EV_FREQUENT_CHECK;
2765
2766 ev_start (EV_A_ (W)w, ++checkcnt);
2767 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2768 checks [checkcnt - 1] = w;
2769
2770 EV_FREQUENT_CHECK;
2771}
2772
2773void
2774ev_check_stop (EV_P_ ev_check *w)
2775{
2776 clear_pending (EV_A_ (W)w);
2777 if (expect_false (!ev_is_active (w)))
2778 return;
2779
2780 EV_FREQUENT_CHECK;
2781
2782 {
2783 int active = ev_active (w);
2784
2785 checks [active - 1] = checks [--checkcnt];
2786 ev_active (checks [active - 1]) = active;
2787 }
2788
2789 ev_stop (EV_A_ (W)w);
2790
2791 EV_FREQUENT_CHECK;
2792}
2793
2794#if EV_EMBED_ENABLE
2795void noinline
2796ev_embed_sweep (EV_P_ ev_embed *w)
2797{
2798 ev_loop (w->other, EVLOOP_NONBLOCK);
2799}
2800
2801static void
2802embed_io_cb (EV_P_ ev_io *io, int revents)
2803{
2804 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2805
2806 if (ev_cb (w))
2807 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2808 else
2809 ev_loop (w->other, EVLOOP_NONBLOCK);
2810}
2811
2812static void
2813embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2814{
2815 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2816
2817 {
2818 struct ev_loop *loop = w->other;
2819
2820 while (fdchangecnt)
2821 {
2822 fd_reify (EV_A);
2823 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2824 }
2825 }
2826}
2827
2828#if 0
2829static void
2830embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2831{
2832 ev_idle_stop (EV_A_ idle);
2833}
2834#endif
2835
2836void
2837ev_embed_start (EV_P_ ev_embed *w)
2838{
2839 if (expect_false (ev_is_active (w)))
2840 return;
2841
2842 {
2843 struct ev_loop *loop = w->other;
2844 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2845 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2846 }
2847
2848 EV_FREQUENT_CHECK;
2849
2850 ev_set_priority (&w->io, ev_priority (w));
2851 ev_io_start (EV_A_ &w->io);
2852
2853 ev_prepare_init (&w->prepare, embed_prepare_cb);
2854 ev_set_priority (&w->prepare, EV_MINPRI);
2855 ev_prepare_start (EV_A_ &w->prepare);
2856
2857 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2858
2859 ev_start (EV_A_ (W)w, 1);
2860
2861 EV_FREQUENT_CHECK;
2862}
2863
2864void
2865ev_embed_stop (EV_P_ ev_embed *w)
2866{
2867 clear_pending (EV_A_ (W)w);
2868 if (expect_false (!ev_is_active (w)))
2869 return;
2870
2871 EV_FREQUENT_CHECK;
2872
2873 ev_io_stop (EV_A_ &w->io);
2874 ev_prepare_stop (EV_A_ &w->prepare);
2875
2876 ev_stop (EV_A_ (W)w);
2877
2878 EV_FREQUENT_CHECK;
2879}
2880#endif
2881
2882#if EV_FORK_ENABLE
2883void
2884ev_fork_start (EV_P_ ev_fork *w)
2885{
2886 if (expect_false (ev_is_active (w)))
2887 return;
2888
2889 EV_FREQUENT_CHECK;
2890
2891 ev_start (EV_A_ (W)w, ++forkcnt);
2892 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2893 forks [forkcnt - 1] = w;
2894
2895 EV_FREQUENT_CHECK;
2896}
2897
2898void
2899ev_fork_stop (EV_P_ ev_fork *w)
2900{
2901 clear_pending (EV_A_ (W)w);
2902 if (expect_false (!ev_is_active (w)))
2903 return;
2904
2905 EV_FREQUENT_CHECK;
2906
2907 {
2908 int active = ev_active (w);
2909
2910 forks [active - 1] = forks [--forkcnt];
2911 ev_active (forks [active - 1]) = active;
2912 }
2913
2914 ev_stop (EV_A_ (W)w);
2915
2916 EV_FREQUENT_CHECK;
2917}
2918#endif
2919
2920#if EV_ASYNC_ENABLE
2921void
2922ev_async_start (EV_P_ ev_async *w)
2923{
2924 if (expect_false (ev_is_active (w)))
2925 return;
2926
2927 evpipe_init (EV_A);
2928
2929 EV_FREQUENT_CHECK;
2930
2931 ev_start (EV_A_ (W)w, ++asynccnt);
2932 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2933 asyncs [asynccnt - 1] = w;
2934
2935 EV_FREQUENT_CHECK;
2936}
2937
2938void
2939ev_async_stop (EV_P_ ev_async *w)
2940{
2941 clear_pending (EV_A_ (W)w);
2942 if (expect_false (!ev_is_active (w)))
2943 return;
2944
2945 EV_FREQUENT_CHECK;
2946
2947 {
2948 int active = ev_active (w);
2949
2950 asyncs [active - 1] = asyncs [--asynccnt];
2951 ev_active (asyncs [active - 1]) = active;
2952 }
2953
2954 ev_stop (EV_A_ (W)w);
2955
2956 EV_FREQUENT_CHECK;
2957}
2958
2959void
2960ev_async_send (EV_P_ ev_async *w)
2961{
2962 w->sent = 1;
2963 evpipe_write (EV_A_ &gotasync);
2964}
2965#endif
1382 2966
1383/*****************************************************************************/ 2967/*****************************************************************************/
1384 2968
1385struct ev_once 2969struct ev_once
1386{ 2970{
1387 struct ev_io io; 2971 ev_io io;
1388 struct ev_timer to; 2972 ev_timer to;
1389 void (*cb)(int revents, void *arg); 2973 void (*cb)(int revents, void *arg);
1390 void *arg; 2974 void *arg;
1391}; 2975};
1392 2976
1393static void 2977static void
… …
1396 void (*cb)(int revents, void *arg) = once->cb; 2980 void (*cb)(int revents, void *arg) = once->cb;
1397 void *arg = once->arg; 2981 void *arg = once->arg;
1398 2982
1399 ev_io_stop (EV_A_ &once->io); 2983 ev_io_stop (EV_A_ &once->io);
1400 ev_timer_stop (EV_A_ &once->to); 2984 ev_timer_stop (EV_A_ &once->to);
1401 free (once); 2985 ev_free (once);
1402 2986
1403 cb (revents, arg); 2987 cb (revents, arg);
1404} 2988}
1405 2989
1406static void 2990static void
1407once_cb_io (EV_P_ struct ev_io *w, int revents) 2991once_cb_io (EV_P_ ev_io *w, int revents)
1408{ 2992{
1409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1410} 2994}
1411 2995
1412static void 2996static void
1413once_cb_to (EV_P_ struct ev_timer *w, int revents) 2997once_cb_to (EV_P_ ev_timer *w, int revents)
1414{ 2998{
1415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2999 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1416} 3000}
1417 3001
1418void 3002void
1419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3003ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1420{ 3004{
1421 struct ev_once *once = malloc (sizeof (struct ev_once)); 3005 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422 3006
1423 if (!once) 3007 if (expect_false (!once))
3008 {
1424 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3009 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1425 else 3010 return;
1426 { 3011 }
3012
1427 once->cb = cb; 3013 once->cb = cb;
1428 once->arg = arg; 3014 once->arg = arg;
1429 3015
1430 ev_watcher_init (&once->io, once_cb_io); 3016 ev_init (&once->io, once_cb_io);
1431 if (fd >= 0) 3017 if (fd >= 0)
1432 { 3018 {
1433 ev_io_set (&once->io, fd, events); 3019 ev_io_set (&once->io, fd, events);
1434 ev_io_start (EV_A_ &once->io); 3020 ev_io_start (EV_A_ &once->io);
1435 } 3021 }
1436 3022
1437 ev_watcher_init (&once->to, once_cb_to); 3023 ev_init (&once->to, once_cb_to);
1438 if (timeout >= 0.) 3024 if (timeout >= 0.)
1439 { 3025 {
1440 ev_timer_set (&once->to, timeout, 0.); 3026 ev_timer_set (&once->to, timeout, 0.);
1441 ev_timer_start (EV_A_ &once->to); 3027 ev_timer_start (EV_A_ &once->to);
1442 }
1443 } 3028 }
1444} 3029}
1445 3030
3031#if EV_MULTIPLICITY
3032 #include "ev_wrap.h"
3033#endif
3034
3035#ifdef __cplusplus
3036}
3037#endif
3038

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