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

Comparing libev/ev.c (file contents):
Revision 1.144 by root, Tue Nov 27 08:11:52 2007 UTC vs.
Revision 1.274 by root, Thu Nov 20 00:35:10 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 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
50# endif
51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
41# endif 62# endif
42 63
43# if HAVE_CLOCK_GETTIME 64# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 65# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 66# define EV_USE_MONOTONIC 1
… …
51# ifndef EV_USE_MONOTONIC 72# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 73# define EV_USE_MONOTONIC 0
53# endif 74# endif
54# ifndef EV_USE_REALTIME 75# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 76# define EV_USE_REALTIME 0
77# endif
78# endif
79
80# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1
83# else
84# define EV_USE_NANOSLEEP 0
56# endif 85# endif
57# endif 86# endif
58 87
59# ifndef EV_USE_SELECT 88# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 89# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 123# else
95# define EV_USE_PORT 0 124# define EV_USE_PORT 0
96# endif 125# endif
97# endif 126# endif
98 127
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1
131# else
132# define EV_USE_INOTIFY 0
133# endif
134# endif
135
136# ifndef EV_USE_EVENTFD
137# if HAVE_EVENTFD
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif
142# endif
143
99#endif 144#endif
100 145
101#include <math.h> 146#include <math.h>
102#include <stdlib.h> 147#include <stdlib.h>
103#include <fcntl.h> 148#include <fcntl.h>
… …
109#include <errno.h> 154#include <errno.h>
110#include <sys/types.h> 155#include <sys/types.h>
111#include <time.h> 156#include <time.h>
112 157
113#include <signal.h> 158#include <signal.h>
159
160#ifdef EV_H
161# include EV_H
162#else
163# include "ev.h"
164#endif
114 165
115#ifndef _WIN32 166#ifndef _WIN32
116# include <sys/time.h> 167# include <sys/time.h>
117# include <sys/wait.h> 168# include <sys/wait.h>
118# include <unistd.h> 169# include <unistd.h>
119#else 170#else
171# include <io.h>
120# define WIN32_LEAN_AND_MEAN 172# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 173# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 174# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 175# define EV_SELECT_IS_WINSOCKET 1
124# endif 176# endif
125#endif 177#endif
126 178
127/**/ 179/* this block tries to deduce configuration from header-defined symbols and defaults */
180
181#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1
184# else
185# define EV_USE_CLOCK_SYSCALL 0
186# endif
187#endif
128 188
129#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1
192# else
130# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
194# endif
131#endif 195#endif
132 196
133#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME 0
199#endif
200
201#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1
204# else
205# define EV_USE_NANOSLEEP 0
206# endif
135#endif 207#endif
136 208
137#ifndef EV_USE_SELECT 209#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 210# define EV_USE_SELECT 1
139#endif 211#endif
… …
145# define EV_USE_POLL 1 217# define EV_USE_POLL 1
146# endif 218# endif
147#endif 219#endif
148 220
149#ifndef EV_USE_EPOLL 221#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1
224# else
150# define EV_USE_EPOLL 0 225# define EV_USE_EPOLL 0
226# endif
151#endif 227#endif
152 228
153#ifndef EV_USE_KQUEUE 229#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 230# define EV_USE_KQUEUE 0
155#endif 231#endif
156 232
157#ifndef EV_USE_PORT 233#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 234# define EV_USE_PORT 0
159#endif 235#endif
160 236
161/**/ 237#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1
240# else
241# define EV_USE_INOTIFY 0
242# endif
243#endif
244
245#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif
252
253#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif
260
261#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1
264# else
265# define EV_USE_EVENTFD 0
266# endif
267#endif
268
269#if 0 /* debugging */
270# define EV_VERIFY 3
271# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1
273#endif
274
275#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL
277#endif
278
279#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL
281#endif
282
283#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL
285#endif
286
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 288
163#ifndef CLOCK_MONOTONIC 289#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 290# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 291# define EV_USE_MONOTONIC 0
166#endif 292#endif
… …
168#ifndef CLOCK_REALTIME 294#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 295# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 296# define EV_USE_REALTIME 0
171#endif 297#endif
172 298
299#if !EV_STAT_ENABLE
300# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0
302#endif
303
304#if !EV_USE_NANOSLEEP
305# ifndef _WIN32
306# include <sys/select.h>
307# endif
308#endif
309
310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
313# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318# endif
319#endif
320
173#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 322# include <winsock.h>
175#endif 323#endif
176 324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h>
337# ifdef __cplusplus
338extern "C" {
339# endif
340int eventfd (unsigned int initval, int flags);
341# ifdef __cplusplus
342}
343# endif
344#endif
345
177/**/ 346/**/
347
348#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
350#else
351# define EV_FREQUENT_CHECK do { } while (0)
352#endif
353
354/*
355 * This is used to avoid floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 363
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 367
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 368#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 369# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 370# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 371#else
201# define expect(expr,value) (expr) 372# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif
205#endif 377#endif
206 378
207#define expect_false(expr) expect ((expr) != 0, 0) 379#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 380#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline
382
383#if EV_MINIMAL
384# define inline_speed static noinline
385#else
386# define inline_speed static inline
387#endif
209 388
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 391
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 392#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 393#define EMPTY2(a,b) /* used to suppress some warnings */
215 394
216typedef ev_watcher *W; 395typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 396typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
219 398
399#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at
401
402#if EV_USE_MONOTONIC
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 405static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
406#endif
221 407
222#ifdef _WIN32 408#ifdef _WIN32
223# include "ev_win32.c" 409# include "ev_win32.c"
224#endif 410#endif
225 411
… …
232{ 418{
233 syserr_cb = cb; 419 syserr_cb = cb;
234} 420}
235 421
236static void noinline 422static void noinline
237syserr (const char *msg) 423ev_syserr (const char *msg)
238{ 424{
239 if (!msg) 425 if (!msg)
240 msg = "(libev) system error"; 426 msg = "(libev) system error";
241 427
242 if (syserr_cb) 428 if (syserr_cb)
… …
246 perror (msg); 432 perror (msg);
247 abort (); 433 abort ();
248 } 434 }
249} 435}
250 436
437static void *
438ev_realloc_emul (void *ptr, long size)
439{
440 /* some systems, notably openbsd and darwin, fail to properly
441 * implement realloc (x, 0) (as required by both ansi c-98 and
442 * the single unix specification, so work around them here.
443 */
444
445 if (size)
446 return realloc (ptr, size);
447
448 free (ptr);
449 return 0;
450}
451
251static void *(*alloc)(void *ptr, long size); 452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
252 453
253void 454void
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 455ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 456{
256 alloc = cb; 457 alloc = cb;
257} 458}
258 459
259static void * 460inline_speed void *
260ev_realloc (void *ptr, long size) 461ev_realloc (void *ptr, long size)
261{ 462{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 463 ptr = alloc (ptr, size);
263 464
264 if (!ptr && size) 465 if (!ptr && size)
265 { 466 {
266 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
267 abort (); 468 abort ();
… …
278typedef struct 479typedef struct
279{ 480{
280 WL head; 481 WL head;
281 unsigned char events; 482 unsigned char events;
282 unsigned char reify; 483 unsigned char reify;
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused;
486#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif
283#if EV_SELECT_IS_WINSOCKET 489#if EV_SELECT_IS_WINSOCKET
284 SOCKET handle; 490 SOCKET handle;
285#endif 491#endif
286} ANFD; 492} ANFD;
287 493
288typedef struct 494typedef struct
289{ 495{
290 W w; 496 W w;
291 int events; 497 int events;
292} ANPENDING; 498} ANPENDING;
499
500#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */
502typedef struct
503{
504 WL head;
505} ANFS;
506#endif
507
508/* Heap Entry */
509#if EV_HEAP_CACHE_AT
510 typedef struct {
511 ev_tstamp at;
512 WT w;
513 } ANHE;
514
515 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else
519 typedef WT ANHE;
520
521 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he)
524#endif
293 525
294#if EV_MULTIPLICITY 526#if EV_MULTIPLICITY
295 527
296 struct ev_loop 528 struct ev_loop
297 { 529 {
… …
354{ 586{
355 return ev_rt_now; 587 return ev_rt_now;
356} 588}
357#endif 589#endif
358 590
359#define array_roundsize(type,n) (((n) | 4) & ~3) 591void
592ev_sleep (ev_tstamp delay)
593{
594 if (delay > 0.)
595 {
596#if EV_USE_NANOSLEEP
597 struct timespec ts;
598
599 ts.tv_sec = (time_t)delay;
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0);
603#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3));
605#else
606 struct timeval tv;
607
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */
614 select (0, 0, 0, 0, &tv);
615#endif
616 }
617}
618
619/*****************************************************************************/
620
621#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622
623int inline_size
624array_nextsize (int elem, int cur, int cnt)
625{
626 int ncur = cur + 1;
627
628 do
629 ncur <<= 1;
630 while (cnt > ncur);
631
632 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
633 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
634 {
635 ncur *= elem;
636 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
637 ncur = ncur - sizeof (void *) * 4;
638 ncur /= elem;
639 }
640
641 return ncur;
642}
643
644static noinline void *
645array_realloc (int elem, void *base, int *cur, int cnt)
646{
647 *cur = array_nextsize (elem, *cur, cnt);
648 return ev_realloc (base, elem * *cur);
649}
650
651#define array_init_zero(base,count) \
652 memset ((void *)(base), 0, sizeof (*(base)) * (count))
360 653
361#define array_needsize(type,base,cur,cnt,init) \ 654#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 655 if (expect_false ((cnt) > (cur))) \
363 { \ 656 { \
364 int newcnt = cur; \ 657 int ocur_ = (cur); \
365 do \ 658 (base) = (type *)array_realloc \
366 { \ 659 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 660 init ((base) + (ocur_), (cur) - ocur_); \
368 } \
369 while ((cnt) > newcnt); \
370 \
371 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372 init (base + cur, newcnt - cur); \
373 cur = newcnt; \
374 } 661 }
375 662
663#if 0
376#define array_slim(type,stem) \ 664#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 665 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 666 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 667 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 668 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 669 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 670 }
671#endif
383 672
384#define array_free(stem, idx) \ 673#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 674 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386 675
387/*****************************************************************************/ 676/*****************************************************************************/
388 677
389void noinline 678void noinline
390ev_feed_event (EV_P_ void *w, int revents) 679ev_feed_event (EV_P_ void *w, int revents)
391{ 680{
392 W w_ = (W)w; 681 W w_ = (W)w;
682 int pri = ABSPRI (w_);
393 683
394 if (expect_false (w_->pending)) 684 if (expect_false (w_->pending))
685 pendings [pri][w_->pending - 1].events |= revents;
686 else
395 { 687 {
688 w_->pending = ++pendingcnt [pri];
689 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
690 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 691 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 692 }
399
400 w_->pending = ++pendingcnt [ABSPRI (w_)];
401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404} 693}
405 694
406void inline_size 695void inline_speed
407queue_events (EV_P_ W *events, int eventcnt, int type) 696queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 697{
409 int i; 698 int i;
410 699
411 for (i = 0; i < eventcnt; ++i) 700 for (i = 0; i < eventcnt; ++i)
412 ev_feed_event (EV_A_ events [i], type); 701 ev_feed_event (EV_A_ events [i], type);
413} 702}
414 703
415/*****************************************************************************/ 704/*****************************************************************************/
416 705
417void inline_size
418anfds_init (ANFD *base, int count)
419{
420 while (count--)
421 {
422 base->head = 0;
423 base->events = EV_NONE;
424 base->reify = 0;
425
426 ++base;
427 }
428}
429
430void inline_speed 706void inline_speed
431fd_event (EV_P_ int fd, int revents) 707fd_event (EV_P_ int fd, int revents)
432{ 708{
433 ANFD *anfd = anfds + fd; 709 ANFD *anfd = anfds + fd;
434 ev_io *w; 710 ev_io *w;
… …
443} 719}
444 720
445void 721void
446ev_feed_fd_event (EV_P_ int fd, int revents) 722ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 723{
724 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 725 fd_event (EV_A_ fd, revents);
449} 726}
450 727
451void inline_size 728void inline_size
452fd_reify (EV_P) 729fd_reify (EV_P)
453{ 730{
… …
457 { 734 {
458 int fd = fdchanges [i]; 735 int fd = fdchanges [i];
459 ANFD *anfd = anfds + fd; 736 ANFD *anfd = anfds + fd;
460 ev_io *w; 737 ev_io *w;
461 738
462 int events = 0; 739 unsigned char events = 0;
463 740
464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465 events |= w->events; 742 events |= (unsigned char)w->events;
466 743
467#if EV_SELECT_IS_WINSOCKET 744#if EV_SELECT_IS_WINSOCKET
468 if (events) 745 if (events)
469 { 746 {
470 unsigned long argp; 747 unsigned long arg;
748 #ifdef EV_FD_TO_WIN32_HANDLE
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750 #else
471 anfd->handle = _get_osfhandle (fd); 751 anfd->handle = _get_osfhandle (fd);
752 #endif
472 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 753 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
473 } 754 }
474#endif 755#endif
475 756
757 {
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
476 anfd->reify = 0; 761 anfd->reify = 0;
477
478 backend_modify (EV_A_ fd, anfd->events, events);
479 anfd->events = events; 762 anfd->events = events;
763
764 if (o_events != events || o_reify & EV_IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events);
766 }
480 } 767 }
481 768
482 fdchangecnt = 0; 769 fdchangecnt = 0;
483} 770}
484 771
485void inline_size 772void inline_size
486fd_change (EV_P_ int fd) 773fd_change (EV_P_ int fd, int flags)
487{ 774{
488 if (expect_false (anfds [fd].reify)) 775 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 776 anfds [fd].reify |= flags;
492 777
778 if (expect_true (!reify))
779 {
493 ++fdchangecnt; 780 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 782 fdchanges [fdchangecnt - 1] = fd;
783 }
496} 784}
497 785
498void inline_speed 786void inline_speed
499fd_kill (EV_P_ int fd) 787fd_kill (EV_P_ int fd)
500{ 788{
… …
523{ 811{
524 int fd; 812 int fd;
525 813
526 for (fd = 0; fd < anfdmax; ++fd) 814 for (fd = 0; fd < anfdmax; ++fd)
527 if (anfds [fd].events) 815 if (anfds [fd].events)
528 if (!fd_valid (fd) == -1 && errno == EBADF) 816 if (!fd_valid (fd) && errno == EBADF)
529 fd_kill (EV_A_ fd); 817 fd_kill (EV_A_ fd);
530} 818}
531 819
532/* called on ENOMEM in select/poll to kill some fds and retry */ 820/* called on ENOMEM in select/poll to kill some fds and retry */
533static void noinline 821static void noinline
… …
547static void noinline 835static void noinline
548fd_rearm_all (EV_P) 836fd_rearm_all (EV_P)
549{ 837{
550 int fd; 838 int fd;
551 839
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 840 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 841 if (anfds [fd].events)
555 { 842 {
556 anfds [fd].events = 0; 843 anfds [fd].events = 0;
844 anfds [fd].emask = 0;
557 fd_change (EV_A_ fd); 845 fd_change (EV_A_ fd, EV_IOFDSET | 1);
558 } 846 }
559} 847}
560 848
561/*****************************************************************************/ 849/*****************************************************************************/
562 850
851/*
852 * the heap functions want a real array index. array index 0 uis guaranteed to not
853 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
854 * the branching factor of the d-tree.
855 */
856
857/*
858 * at the moment we allow libev the luxury of two heaps,
859 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
860 * which is more cache-efficient.
861 * the difference is about 5% with 50000+ watchers.
862 */
863#if EV_USE_4HEAP
864
865#define DHEAP 4
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k))
869
870/* away from the root */
563void inline_speed 871void inline_speed
564upheap (WT *heap, int k) 872downheap (ANHE *heap, int N, int k)
565{ 873{
566 WT w = heap [k]; 874 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0;
567 876
568 while (k && heap [k >> 1]->at > w->at) 877 for (;;)
569 {
570 heap [k] = heap [k >> 1];
571 ((W)heap [k])->active = k + 1;
572 k >>= 1;
573 } 878 {
879 ev_tstamp minat;
880 ANHE *minpos;
881 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
574 882
883 /* find minimum child */
884 if (expect_true (pos + DHEAP - 1 < E))
885 {
886 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
887 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
888 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
889 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
890 }
891 else if (pos < E)
892 {
893 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
894 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
895 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
896 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
897 }
898 else
899 break;
900
901 if (ANHE_at (he) <= minat)
902 break;
903
904 heap [k] = *minpos;
905 ev_active (ANHE_w (*minpos)) = k;
906
907 k = minpos - heap;
908 }
909
575 heap [k] = w; 910 heap [k] = he;
576 ((W)heap [k])->active = k + 1; 911 ev_active (ANHE_w (he)) = k;
577
578} 912}
579 913
914#else /* 4HEAP */
915
916#define HEAP0 1
917#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p))
919
920/* away from the root */
580void inline_speed 921void inline_speed
581downheap (WT *heap, int N, int k) 922downheap (ANHE *heap, int N, int k)
582{ 923{
583 WT w = heap [k]; 924 ANHE he = heap [k];
584 925
585 while (k < (N >> 1)) 926 for (;;)
586 { 927 {
587 int j = k << 1; 928 int c = k << 1;
588 929
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 930 if (c > N + HEAP0 - 1)
590 ++j;
591
592 if (w->at <= heap [j]->at)
593 break; 931 break;
594 932
933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
934 ? 1 : 0;
935
936 if (ANHE_at (he) <= ANHE_at (heap [c]))
937 break;
938
595 heap [k] = heap [j]; 939 heap [k] = heap [c];
596 ((W)heap [k])->active = k + 1; 940 ev_active (ANHE_w (heap [k])) = k;
941
597 k = j; 942 k = c;
598 } 943 }
599 944
600 heap [k] = w; 945 heap [k] = he;
601 ((W)heap [k])->active = k + 1; 946 ev_active (ANHE_w (he)) = k;
947}
948#endif
949
950/* towards the root */
951void inline_speed
952upheap (ANHE *heap, int k)
953{
954 ANHE he = heap [k];
955
956 for (;;)
957 {
958 int p = HPARENT (k);
959
960 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
961 break;
962
963 heap [k] = heap [p];
964 ev_active (ANHE_w (heap [k])) = k;
965 k = p;
966 }
967
968 heap [k] = he;
969 ev_active (ANHE_w (he)) = k;
602} 970}
603 971
604void inline_size 972void inline_size
605adjustheap (WT *heap, int N, int k) 973adjustheap (ANHE *heap, int N, int k)
606{ 974{
975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
607 upheap (heap, k); 976 upheap (heap, k);
977 else
608 downheap (heap, N, k); 978 downheap (heap, N, k);
979}
980
981/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size
983reheap (ANHE *heap, int N)
984{
985 int i;
986
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
988 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
989 for (i = 0; i < N; ++i)
990 upheap (heap, i + HEAP0);
609} 991}
610 992
611/*****************************************************************************/ 993/*****************************************************************************/
612 994
613typedef struct 995typedef struct
614{ 996{
615 WL head; 997 WL head;
616 sig_atomic_t volatile gotsig; 998 EV_ATOMIC_T gotsig;
617} ANSIG; 999} ANSIG;
618 1000
619static ANSIG *signals; 1001static ANSIG *signals;
620static int signalmax; 1002static int signalmax;
621 1003
622static int sigpipe [2]; 1004static EV_ATOMIC_T gotsig;
623static sig_atomic_t volatile gotsig;
624static ev_io sigev;
625 1005
1006/*****************************************************************************/
1007
626void inline_size 1008void inline_speed
627signals_init (ANSIG *base, int count)
628{
629 while (count--)
630 {
631 base->head = 0;
632 base->gotsig = 0;
633
634 ++base;
635 }
636}
637
638static void
639sighandler (int signum)
640{
641#if _WIN32
642 signal (signum, sighandler);
643#endif
644
645 signals [signum - 1].gotsig = 1;
646
647 if (!gotsig)
648 {
649 int old_errno = errno;
650 gotsig = 1;
651 write (sigpipe [1], &signum, 1);
652 errno = old_errno;
653 }
654}
655
656void noinline
657ev_feed_signal_event (EV_P_ int signum)
658{
659 WL w;
660
661#if EV_MULTIPLICITY
662 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
663#endif
664
665 --signum;
666
667 if (signum < 0 || signum >= signalmax)
668 return;
669
670 signals [signum].gotsig = 0;
671
672 for (w = signals [signum].head; w; w = w->next)
673 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
674}
675
676static void
677sigcb (EV_P_ ev_io *iow, int revents)
678{
679 int signum;
680
681 read (sigpipe [0], &revents, 1);
682 gotsig = 0;
683
684 for (signum = signalmax; signum--; )
685 if (signals [signum].gotsig)
686 ev_feed_signal_event (EV_A_ signum + 1);
687}
688
689void inline_size
690fd_intern (int fd) 1009fd_intern (int fd)
691{ 1010{
692#ifdef _WIN32 1011#ifdef _WIN32
693 int arg = 1; 1012 unsigned long arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
695#else 1014#else
696 fcntl (fd, F_SETFD, FD_CLOEXEC); 1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
697 fcntl (fd, F_SETFL, O_NONBLOCK); 1016 fcntl (fd, F_SETFL, O_NONBLOCK);
698#endif 1017#endif
699} 1018}
700 1019
701static void noinline 1020static void noinline
702siginit (EV_P) 1021evpipe_init (EV_P)
703{ 1022{
1023 if (!ev_is_active (&pipeev))
1024 {
1025#if EV_USE_EVENTFD
1026 if ((evfd = eventfd (0, 0)) >= 0)
1027 {
1028 evpipe [0] = -1;
1029 fd_intern (evfd);
1030 ev_io_set (&pipeev, evfd, EV_READ);
1031 }
1032 else
1033#endif
1034 {
1035 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe");
1037
704 fd_intern (sigpipe [0]); 1038 fd_intern (evpipe [0]);
705 fd_intern (sigpipe [1]); 1039 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ);
1041 }
706 1042
707 ev_io_set (&sigev, sigpipe [0], EV_READ);
708 ev_io_start (EV_A_ &sigev); 1043 ev_io_start (EV_A_ &pipeev);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1044 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 }
1046}
1047
1048void inline_size
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{
1051 if (!*flag)
1052 {
1053 int old_errno = errno; /* save errno because write might clobber it */
1054
1055 *flag = 1;
1056
1057#if EV_USE_EVENTFD
1058 if (evfd >= 0)
1059 {
1060 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t));
1062 }
1063 else
1064#endif
1065 write (evpipe [1], &old_errno, 1);
1066
1067 errno = old_errno;
1068 }
1069}
1070
1071static void
1072pipecb (EV_P_ ev_io *iow, int revents)
1073{
1074#if EV_USE_EVENTFD
1075 if (evfd >= 0)
1076 {
1077 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t));
1079 }
1080 else
1081#endif
1082 {
1083 char dummy;
1084 read (evpipe [0], &dummy, 1);
1085 }
1086
1087 if (gotsig && ev_is_default_loop (EV_A))
1088 {
1089 int signum;
1090 gotsig = 0;
1091
1092 for (signum = signalmax; signum--; )
1093 if (signals [signum].gotsig)
1094 ev_feed_signal_event (EV_A_ signum + 1);
1095 }
1096
1097#if EV_ASYNC_ENABLE
1098 if (gotasync)
1099 {
1100 int i;
1101 gotasync = 0;
1102
1103 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent)
1105 {
1106 asyncs [i]->sent = 0;
1107 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1108 }
1109 }
1110#endif
710} 1111}
711 1112
712/*****************************************************************************/ 1113/*****************************************************************************/
713 1114
1115static void
1116ev_sighandler (int signum)
1117{
1118#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct;
1120#endif
1121
1122#if _WIN32
1123 signal (signum, ev_sighandler);
1124#endif
1125
1126 signals [signum - 1].gotsig = 1;
1127 evpipe_write (EV_A_ &gotsig);
1128}
1129
1130void noinline
1131ev_feed_signal_event (EV_P_ int signum)
1132{
1133 WL w;
1134
1135#if EV_MULTIPLICITY
1136 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1137#endif
1138
1139 --signum;
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return;
1143
1144 signals [signum].gotsig = 0;
1145
1146 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148}
1149
1150/*****************************************************************************/
1151
714static ev_child *childs [PID_HASHSIZE]; 1152static WL childs [EV_PID_HASHSIZE];
715 1153
716#ifndef _WIN32 1154#ifndef _WIN32
717 1155
718static ev_signal childev; 1156static ev_signal childev;
719 1157
1158#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0
1160#endif
1161
720void inline_speed 1162void inline_speed
721child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1163child_reap (EV_P_ int chain, int pid, int status)
722{ 1164{
723 ev_child *w; 1165 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
724 1167
725 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 {
726 if (w->pid == pid || !w->pid) 1170 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1)))
727 { 1172 {
728 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
729 w->rpid = pid; 1174 w->rpid = pid;
730 w->rstatus = status; 1175 w->rstatus = status;
731 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1176 ev_feed_event (EV_A_ (W)w, EV_CHILD);
732 } 1177 }
1178 }
733} 1179}
734 1180
735#ifndef WCONTINUED 1181#ifndef WCONTINUED
736# define WCONTINUED 0 1182# define WCONTINUED 0
737#endif 1183#endif
… …
746 if (!WCONTINUED 1192 if (!WCONTINUED
747 || errno != EINVAL 1193 || errno != EINVAL
748 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1194 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
749 return; 1195 return;
750 1196
751 /* make sure we are called again until all childs have been reaped */ 1197 /* make sure we are called again until all children have been reaped */
752 /* we need to do it this way so that the callback gets called before we continue */ 1198 /* we need to do it this way so that the callback gets called before we continue */
753 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754 1200
755 child_reap (EV_A_ sw, pid, pid, status); 1201 child_reap (EV_A_ pid, pid, status);
1202 if (EV_PID_HASHSIZE > 1)
756 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757} 1204}
758 1205
759#endif 1206#endif
760 1207
761/*****************************************************************************/ 1208/*****************************************************************************/
… …
833} 1280}
834 1281
835unsigned int 1282unsigned int
836ev_embeddable_backends (void) 1283ev_embeddable_backends (void)
837{ 1284{
838 return EVBACKEND_EPOLL 1285 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
839 | EVBACKEND_KQUEUE 1286
840 | EVBACKEND_PORT; 1287 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1288 /* please fix it and tell me how to detect the fix */
1289 flags &= ~EVBACKEND_EPOLL;
1290
1291 return flags;
841} 1292}
842 1293
843unsigned int 1294unsigned int
844ev_backend (EV_P) 1295ev_backend (EV_P)
845{ 1296{
846 return backend; 1297 return backend;
847} 1298}
848 1299
849static void 1300unsigned int
1301ev_loop_count (EV_P)
1302{
1303 return loop_count;
1304}
1305
1306void
1307ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308{
1309 io_blocktime = interval;
1310}
1311
1312void
1313ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314{
1315 timeout_blocktime = interval;
1316}
1317
1318static void noinline
850loop_init (EV_P_ unsigned int flags) 1319loop_init (EV_P_ unsigned int flags)
851{ 1320{
852 if (!backend) 1321 if (!backend)
853 { 1322 {
854#if EV_USE_MONOTONIC 1323#if EV_USE_MONOTONIC
… …
857 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1326 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
858 have_monotonic = 1; 1327 have_monotonic = 1;
859 } 1328 }
860#endif 1329#endif
861 1330
862 ev_rt_now = ev_time (); 1331 ev_rt_now = ev_time ();
863 mn_now = get_clock (); 1332 mn_now = get_clock ();
864 now_floor = mn_now; 1333 now_floor = mn_now;
865 rtmn_diff = ev_rt_now - mn_now; 1334 rtmn_diff = ev_rt_now - mn_now;
1335
1336 io_blocktime = 0.;
1337 timeout_blocktime = 0.;
1338 backend = 0;
1339 backend_fd = -1;
1340 gotasync = 0;
1341#if EV_USE_INOTIFY
1342 fs_fd = -2;
1343#endif
1344
1345 /* pid check not overridable via env */
1346#ifndef _WIN32
1347 if (flags & EVFLAG_FORKCHECK)
1348 curpid = getpid ();
1349#endif
866 1350
867 if (!(flags & EVFLAG_NOENV) 1351 if (!(flags & EVFLAG_NOENV)
868 && !enable_secure () 1352 && !enable_secure ()
869 && getenv ("LIBEV_FLAGS")) 1353 && getenv ("LIBEV_FLAGS"))
870 flags = atoi (getenv ("LIBEV_FLAGS")); 1354 flags = atoi (getenv ("LIBEV_FLAGS"));
871 1355
872 if (!(flags & 0x0000ffffUL)) 1356 if (!(flags & 0x0000ffffU))
873 flags |= ev_recommended_backends (); 1357 flags |= ev_recommended_backends ();
874 1358
875 backend = 0;
876#if EV_USE_PORT 1359#if EV_USE_PORT
877 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1360 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878#endif 1361#endif
879#if EV_USE_KQUEUE 1362#if EV_USE_KQUEUE
880 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1363 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
887#endif 1370#endif
888#if EV_USE_SELECT 1371#if EV_USE_SELECT
889 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1372 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
890#endif 1373#endif
891 1374
892 ev_init (&sigev, sigcb); 1375 ev_init (&pipeev, pipecb);
893 ev_set_priority (&sigev, EV_MAXPRI); 1376 ev_set_priority (&pipeev, EV_MAXPRI);
894 } 1377 }
895} 1378}
896 1379
897static void 1380static void noinline
898loop_destroy (EV_P) 1381loop_destroy (EV_P)
899{ 1382{
900 int i; 1383 int i;
1384
1385 if (ev_is_active (&pipeev))
1386 {
1387 ev_ref (EV_A); /* signal watcher */
1388 ev_io_stop (EV_A_ &pipeev);
1389
1390#if EV_USE_EVENTFD
1391 if (evfd >= 0)
1392 close (evfd);
1393#endif
1394
1395 if (evpipe [0] >= 0)
1396 {
1397 close (evpipe [0]);
1398 close (evpipe [1]);
1399 }
1400 }
1401
1402#if EV_USE_INOTIFY
1403 if (fs_fd >= 0)
1404 close (fs_fd);
1405#endif
1406
1407 if (backend_fd >= 0)
1408 close (backend_fd);
901 1409
902#if EV_USE_PORT 1410#if EV_USE_PORT
903 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1411 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904#endif 1412#endif
905#if EV_USE_KQUEUE 1413#if EV_USE_KQUEUE
… …
914#if EV_USE_SELECT 1422#if EV_USE_SELECT
915 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1423 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916#endif 1424#endif
917 1425
918 for (i = NUMPRI; i--; ) 1426 for (i = NUMPRI; i--; )
1427 {
919 array_free (pending, [i]); 1428 array_free (pending, [i]);
1429#if EV_IDLE_ENABLE
1430 array_free (idle, [i]);
1431#endif
1432 }
1433
1434 ev_free (anfds); anfdmax = 0;
920 1435
921 /* have to use the microsoft-never-gets-it-right macro */ 1436 /* have to use the microsoft-never-gets-it-right macro */
922 array_free (fdchange, EMPTY0); 1437 array_free (fdchange, EMPTY);
923 array_free (timer, EMPTY0); 1438 array_free (timer, EMPTY);
924#if EV_PERIODIC_ENABLE 1439#if EV_PERIODIC_ENABLE
925 array_free (periodic, EMPTY0); 1440 array_free (periodic, EMPTY);
926#endif 1441#endif
1442#if EV_FORK_ENABLE
927 array_free (idle, EMPTY0); 1443 array_free (fork, EMPTY);
1444#endif
928 array_free (prepare, EMPTY0); 1445 array_free (prepare, EMPTY);
929 array_free (check, EMPTY0); 1446 array_free (check, EMPTY);
1447#if EV_ASYNC_ENABLE
1448 array_free (async, EMPTY);
1449#endif
930 1450
931 backend = 0; 1451 backend = 0;
932} 1452}
933 1453
934static void 1454#if EV_USE_INOTIFY
1455void inline_size infy_fork (EV_P);
1456#endif
1457
1458void inline_size
935loop_fork (EV_P) 1459loop_fork (EV_P)
936{ 1460{
937#if EV_USE_PORT 1461#if EV_USE_PORT
938 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1462 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939#endif 1463#endif
… …
941 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1465 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942#endif 1466#endif
943#if EV_USE_EPOLL 1467#if EV_USE_EPOLL
944 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1468 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
945#endif 1469#endif
1470#if EV_USE_INOTIFY
1471 infy_fork (EV_A);
1472#endif
946 1473
947 if (ev_is_active (&sigev)) 1474 if (ev_is_active (&pipeev))
948 { 1475 {
949 /* default loop */ 1476 /* this "locks" the handlers against writing to the pipe */
1477 /* while we modify the fd vars */
1478 gotsig = 1;
1479#if EV_ASYNC_ENABLE
1480 gotasync = 1;
1481#endif
950 1482
951 ev_ref (EV_A); 1483 ev_ref (EV_A);
952 ev_io_stop (EV_A_ &sigev); 1484 ev_io_stop (EV_A_ &pipeev);
1485
1486#if EV_USE_EVENTFD
1487 if (evfd >= 0)
1488 close (evfd);
1489#endif
1490
1491 if (evpipe [0] >= 0)
1492 {
953 close (sigpipe [0]); 1493 close (evpipe [0]);
954 close (sigpipe [1]); 1494 close (evpipe [1]);
1495 }
955 1496
956 while (pipe (sigpipe))
957 syserr ("(libev) error creating pipe");
958
959 siginit (EV_A); 1497 evpipe_init (EV_A);
1498 /* now iterate over everything, in case we missed something */
1499 pipecb (EV_A_ &pipeev, EV_READ);
960 } 1500 }
961 1501
962 postfork = 0; 1502 postfork = 0;
963} 1503}
964 1504
965#if EV_MULTIPLICITY 1505#if EV_MULTIPLICITY
1506
966struct ev_loop * 1507struct ev_loop *
967ev_loop_new (unsigned int flags) 1508ev_loop_new (unsigned int flags)
968{ 1509{
969 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1510 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
970 1511
… …
986} 1527}
987 1528
988void 1529void
989ev_loop_fork (EV_P) 1530ev_loop_fork (EV_P)
990{ 1531{
991 postfork = 1; 1532 postfork = 1; /* must be in line with ev_default_fork */
992} 1533}
993 1534
1535#if EV_VERIFY
1536static void noinline
1537verify_watcher (EV_P_ W w)
1538{
1539 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540
1541 if (w->pending)
1542 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543}
1544
1545static void noinline
1546verify_heap (EV_P_ ANHE *heap, int N)
1547{
1548 int i;
1549
1550 for (i = HEAP0; i < N + HEAP0; ++i)
1551 {
1552 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1553 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1554 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555
1556 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557 }
1558}
1559
1560static void noinline
1561array_verify (EV_P_ W *ws, int cnt)
1562{
1563 while (cnt--)
1564 {
1565 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566 verify_watcher (EV_A_ ws [cnt]);
1567 }
1568}
1569#endif
1570
1571void
1572ev_loop_verify (EV_P)
1573{
1574#if EV_VERIFY
1575 int i;
1576 WL w;
1577
1578 assert (activecnt >= -1);
1579
1580 assert (fdchangemax >= fdchangecnt);
1581 for (i = 0; i < fdchangecnt; ++i)
1582 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1583
1584 assert (anfdmax >= 0);
1585 for (i = 0; i < anfdmax; ++i)
1586 for (w = anfds [i].head; w; w = w->next)
1587 {
1588 verify_watcher (EV_A_ (W)w);
1589 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1590 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591 }
1592
1593 assert (timermax >= timercnt);
1594 verify_heap (EV_A_ timers, timercnt);
1595
1596#if EV_PERIODIC_ENABLE
1597 assert (periodicmax >= periodiccnt);
1598 verify_heap (EV_A_ periodics, periodiccnt);
1599#endif
1600
1601 for (i = NUMPRI; i--; )
1602 {
1603 assert (pendingmax [i] >= pendingcnt [i]);
1604#if EV_IDLE_ENABLE
1605 assert (idleall >= 0);
1606 assert (idlemax [i] >= idlecnt [i]);
1607 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1608#endif
1609 }
1610
1611#if EV_FORK_ENABLE
1612 assert (forkmax >= forkcnt);
1613 array_verify (EV_A_ (W *)forks, forkcnt);
1614#endif
1615
1616#if EV_ASYNC_ENABLE
1617 assert (asyncmax >= asynccnt);
1618 array_verify (EV_A_ (W *)asyncs, asynccnt);
1619#endif
1620
1621 assert (preparemax >= preparecnt);
1622 array_verify (EV_A_ (W *)prepares, preparecnt);
1623
1624 assert (checkmax >= checkcnt);
1625 array_verify (EV_A_ (W *)checks, checkcnt);
1626
1627# if 0
1628 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1629 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
994#endif 1630# endif
1631#endif
1632}
1633
1634#endif /* multiplicity */
995 1635
996#if EV_MULTIPLICITY 1636#if EV_MULTIPLICITY
997struct ev_loop * 1637struct ev_loop *
998ev_default_loop_init (unsigned int flags) 1638ev_default_loop_init (unsigned int flags)
999#else 1639#else
1000int 1640int
1001ev_default_loop (unsigned int flags) 1641ev_default_loop (unsigned int flags)
1002#endif 1642#endif
1003{ 1643{
1004 if (sigpipe [0] == sigpipe [1])
1005 if (pipe (sigpipe))
1006 return 0;
1007
1008 if (!ev_default_loop_ptr) 1644 if (!ev_default_loop_ptr)
1009 { 1645 {
1010#if EV_MULTIPLICITY 1646#if EV_MULTIPLICITY
1011 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1647 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1012#else 1648#else
… …
1015 1651
1016 loop_init (EV_A_ flags); 1652 loop_init (EV_A_ flags);
1017 1653
1018 if (ev_backend (EV_A)) 1654 if (ev_backend (EV_A))
1019 { 1655 {
1020 siginit (EV_A);
1021
1022#ifndef _WIN32 1656#ifndef _WIN32
1023 ev_signal_init (&childev, childcb, SIGCHLD); 1657 ev_signal_init (&childev, childcb, SIGCHLD);
1024 ev_set_priority (&childev, EV_MAXPRI); 1658 ev_set_priority (&childev, EV_MAXPRI);
1025 ev_signal_start (EV_A_ &childev); 1659 ev_signal_start (EV_A_ &childev);
1026 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1660 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1038{ 1672{
1039#if EV_MULTIPLICITY 1673#if EV_MULTIPLICITY
1040 struct ev_loop *loop = ev_default_loop_ptr; 1674 struct ev_loop *loop = ev_default_loop_ptr;
1041#endif 1675#endif
1042 1676
1677 ev_default_loop_ptr = 0;
1678
1043#ifndef _WIN32 1679#ifndef _WIN32
1044 ev_ref (EV_A); /* child watcher */ 1680 ev_ref (EV_A); /* child watcher */
1045 ev_signal_stop (EV_A_ &childev); 1681 ev_signal_stop (EV_A_ &childev);
1046#endif 1682#endif
1047 1683
1048 ev_ref (EV_A); /* signal watcher */
1049 ev_io_stop (EV_A_ &sigev);
1050
1051 close (sigpipe [0]); sigpipe [0] = 0;
1052 close (sigpipe [1]); sigpipe [1] = 0;
1053
1054 loop_destroy (EV_A); 1684 loop_destroy (EV_A);
1055} 1685}
1056 1686
1057void 1687void
1058ev_default_fork (void) 1688ev_default_fork (void)
1059{ 1689{
1060#if EV_MULTIPLICITY 1690#if EV_MULTIPLICITY
1061 struct ev_loop *loop = ev_default_loop_ptr; 1691 struct ev_loop *loop = ev_default_loop_ptr;
1062#endif 1692#endif
1063 1693
1064 if (backend) 1694 postfork = 1; /* must be in line with ev_loop_fork */
1065 postfork = 1;
1066} 1695}
1067 1696
1068/*****************************************************************************/ 1697/*****************************************************************************/
1069 1698
1070int inline_size 1699void
1071any_pending (EV_P) 1700ev_invoke (EV_P_ void *w, int revents)
1072{ 1701{
1073 int pri; 1702 EV_CB_INVOKE ((W)w, revents);
1074
1075 for (pri = NUMPRI; pri--; )
1076 if (pendingcnt [pri])
1077 return 1;
1078
1079 return 0;
1080} 1703}
1081 1704
1082void inline_speed 1705void inline_speed
1083call_pending (EV_P) 1706call_pending (EV_P)
1084{ 1707{
… …
1089 { 1712 {
1090 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1713 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091 1714
1092 if (expect_true (p->w)) 1715 if (expect_true (p->w))
1093 { 1716 {
1094 assert (("non-pending watcher on pending list", p->w->pending)); 1717 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1095 1718
1096 p->w->pending = 0; 1719 p->w->pending = 0;
1097 EV_CB_INVOKE (p->w, p->events); 1720 EV_CB_INVOKE (p->w, p->events);
1721 EV_FREQUENT_CHECK;
1098 } 1722 }
1099 } 1723 }
1100} 1724}
1101 1725
1726#if EV_IDLE_ENABLE
1727void inline_size
1728idle_reify (EV_P)
1729{
1730 if (expect_false (idleall))
1731 {
1732 int pri;
1733
1734 for (pri = NUMPRI; pri--; )
1735 {
1736 if (pendingcnt [pri])
1737 break;
1738
1739 if (idlecnt [pri])
1740 {
1741 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1742 break;
1743 }
1744 }
1745 }
1746}
1747#endif
1748
1102void inline_size 1749void inline_size
1103timers_reify (EV_P) 1750timers_reify (EV_P)
1104{ 1751{
1752 EV_FREQUENT_CHECK;
1753
1105 while (timercnt && ((WT)timers [0])->at <= mn_now) 1754 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1106 { 1755 {
1107 ev_timer *w = timers [0]; 1756 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1108 1757
1109 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1758 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1110 1759
1111 /* first reschedule or stop timer */ 1760 /* first reschedule or stop timer */
1112 if (w->repeat) 1761 if (w->repeat)
1113 { 1762 {
1763 ev_at (w) += w->repeat;
1764 if (ev_at (w) < mn_now)
1765 ev_at (w) = mn_now;
1766
1114 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1767 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115 1768
1116 ((WT)w)->at += w->repeat; 1769 ANHE_at_cache (timers [HEAP0]);
1117 if (((WT)w)->at < mn_now)
1118 ((WT)w)->at = mn_now;
1119
1120 downheap ((WT *)timers, timercnt, 0); 1770 downheap (timers, timercnt, HEAP0);
1121 } 1771 }
1122 else 1772 else
1123 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1773 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124 1774
1775 EV_FREQUENT_CHECK;
1125 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1776 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1126 } 1777 }
1127} 1778}
1128 1779
1129#if EV_PERIODIC_ENABLE 1780#if EV_PERIODIC_ENABLE
1130void inline_size 1781void inline_size
1131periodics_reify (EV_P) 1782periodics_reify (EV_P)
1132{ 1783{
1784 EV_FREQUENT_CHECK;
1785
1133 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1134 { 1787 {
1135 ev_periodic *w = periodics [0]; 1788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1136 1789
1137 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1790 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1138 1791
1139 /* first reschedule or stop timer */ 1792 /* first reschedule or stop timer */
1140 if (w->reschedule_cb) 1793 if (w->reschedule_cb)
1141 { 1794 {
1142 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1795 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796
1143 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1797 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798
1799 ANHE_at_cache (periodics [HEAP0]);
1144 downheap ((WT *)periodics, periodiccnt, 0); 1800 downheap (periodics, periodiccnt, HEAP0);
1145 } 1801 }
1146 else if (w->interval) 1802 else if (w->interval)
1147 { 1803 {
1148 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1804 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1149 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1805 /* if next trigger time is not sufficiently in the future, put it there */
1806 /* this might happen because of floating point inexactness */
1807 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808 {
1809 ev_at (w) += w->interval;
1810
1811 /* if interval is unreasonably low we might still have a time in the past */
1812 /* so correct this. this will make the periodic very inexact, but the user */
1813 /* has effectively asked to get triggered more often than possible */
1814 if (ev_at (w) < ev_rt_now)
1815 ev_at (w) = ev_rt_now;
1816 }
1817
1818 ANHE_at_cache (periodics [HEAP0]);
1150 downheap ((WT *)periodics, periodiccnt, 0); 1819 downheap (periodics, periodiccnt, HEAP0);
1151 } 1820 }
1152 else 1821 else
1153 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1822 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154 1823
1824 EV_FREQUENT_CHECK;
1155 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1825 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1156 } 1826 }
1157} 1827}
1158 1828
1159static void noinline 1829static void noinline
1160periodics_reschedule (EV_P) 1830periodics_reschedule (EV_P)
1161{ 1831{
1162 int i; 1832 int i;
1163 1833
1164 /* adjust periodics after time jump */ 1834 /* adjust periodics after time jump */
1165 for (i = 0; i < periodiccnt; ++i) 1835 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1166 { 1836 {
1167 ev_periodic *w = periodics [i]; 1837 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1168 1838
1169 if (w->reschedule_cb) 1839 if (w->reschedule_cb)
1170 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1840 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1171 else if (w->interval) 1841 else if (w->interval)
1172 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1842 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1843
1844 ANHE_at_cache (periodics [i]);
1845 }
1846
1847 reheap (periodics, periodiccnt);
1848}
1849#endif
1850
1851void inline_speed
1852time_update (EV_P_ ev_tstamp max_block)
1853{
1854 int i;
1855
1856#if EV_USE_MONOTONIC
1857 if (expect_true (have_monotonic))
1173 } 1858 {
1859 ev_tstamp odiff = rtmn_diff;
1174 1860
1175 /* now rebuild the heap */
1176 for (i = periodiccnt >> 1; i--; )
1177 downheap ((WT *)periodics, periodiccnt, i);
1178}
1179#endif
1180
1181int inline_size
1182time_update_monotonic (EV_P)
1183{
1184 mn_now = get_clock (); 1861 mn_now = get_clock ();
1185 1862
1863 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1864 /* interpolate in the meantime */
1186 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1865 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187 { 1866 {
1188 ev_rt_now = rtmn_diff + mn_now; 1867 ev_rt_now = rtmn_diff + mn_now;
1189 return 0; 1868 return;
1190 } 1869 }
1191 else 1870
1192 {
1193 now_floor = mn_now; 1871 now_floor = mn_now;
1194 ev_rt_now = ev_time (); 1872 ev_rt_now = ev_time ();
1195 return 1;
1196 }
1197}
1198 1873
1199void inline_size 1874 /* loop a few times, before making important decisions.
1200time_update (EV_P) 1875 * on the choice of "4": one iteration isn't enough,
1201{ 1876 * in case we get preempted during the calls to
1202 int i; 1877 * ev_time and get_clock. a second call is almost guaranteed
1203 1878 * to succeed in that case, though. and looping a few more times
1204#if EV_USE_MONOTONIC 1879 * doesn't hurt either as we only do this on time-jumps or
1205 if (expect_true (have_monotonic)) 1880 * in the unlikely event of having been preempted here.
1206 { 1881 */
1207 if (time_update_monotonic (EV_A)) 1882 for (i = 4; --i; )
1208 { 1883 {
1209 ev_tstamp odiff = rtmn_diff;
1210
1211 /* loop a few times, before making important decisions.
1212 * on the choice of "4": one iteration isn't enough,
1213 * in case we get preempted during the calls to
1214 * ev_time and get_clock. a second call is almost guarenteed
1215 * to succeed in that case, though. and looping a few more times
1216 * doesn't hurt either as we only do this on time-jumps or
1217 * in the unlikely event of getting preempted here.
1218 */
1219 for (i = 4; --i; )
1220 {
1221 rtmn_diff = ev_rt_now - mn_now; 1884 rtmn_diff = ev_rt_now - mn_now;
1222 1885
1223 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1886 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1224 return; /* all is well */ 1887 return; /* all is well */
1225 1888
1226 ev_rt_now = ev_time (); 1889 ev_rt_now = ev_time ();
1227 mn_now = get_clock (); 1890 mn_now = get_clock ();
1228 now_floor = mn_now; 1891 now_floor = mn_now;
1229 } 1892 }
1230 1893
1231# if EV_PERIODIC_ENABLE 1894# if EV_PERIODIC_ENABLE
1232 periodics_reschedule (EV_A); 1895 periodics_reschedule (EV_A);
1233# endif 1896# endif
1234 /* no timer adjustment, as the monotonic clock doesn't jump */ 1897 /* no timer adjustment, as the monotonic clock doesn't jump */
1235 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1898 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236 }
1237 } 1899 }
1238 else 1900 else
1239#endif 1901#endif
1240 { 1902 {
1241 ev_rt_now = ev_time (); 1903 ev_rt_now = ev_time ();
1242 1904
1243 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1905 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244 { 1906 {
1245#if EV_PERIODIC_ENABLE 1907#if EV_PERIODIC_ENABLE
1246 periodics_reschedule (EV_A); 1908 periodics_reschedule (EV_A);
1247#endif 1909#endif
1248
1249 /* adjust timers. this is easy, as the offset is the same for all */ 1910 /* adjust timers. this is easy, as the offset is the same for all of them */
1250 for (i = 0; i < timercnt; ++i) 1911 for (i = 0; i < timercnt; ++i)
1912 {
1913 ANHE *he = timers + i + HEAP0;
1251 ((WT)timers [i])->at += ev_rt_now - mn_now; 1914 ANHE_w (*he)->at += ev_rt_now - mn_now;
1915 ANHE_at_cache (*he);
1916 }
1252 } 1917 }
1253 1918
1254 mn_now = ev_rt_now; 1919 mn_now = ev_rt_now;
1255 } 1920 }
1256} 1921}
… …
1265ev_unref (EV_P) 1930ev_unref (EV_P)
1266{ 1931{
1267 --activecnt; 1932 --activecnt;
1268} 1933}
1269 1934
1935void
1936ev_now_update (EV_P)
1937{
1938 time_update (EV_A_ 1e100);
1939}
1940
1270static int loop_done; 1941static int loop_done;
1271 1942
1272void 1943void
1273ev_loop (EV_P_ int flags) 1944ev_loop (EV_P_ int flags)
1274{ 1945{
1275 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1946 loop_done = EVUNLOOP_CANCEL;
1276 ? EVUNLOOP_ONE
1277 : EVUNLOOP_CANCEL;
1278 1947
1279 while (activecnt) 1948 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1949
1950 do
1280 { 1951 {
1952#if EV_VERIFY >= 2
1953 ev_loop_verify (EV_A);
1954#endif
1955
1956#ifndef _WIN32
1957 if (expect_false (curpid)) /* penalise the forking check even more */
1958 if (expect_false (getpid () != curpid))
1959 {
1960 curpid = getpid ();
1961 postfork = 1;
1962 }
1963#endif
1964
1965#if EV_FORK_ENABLE
1966 /* we might have forked, so queue fork handlers */
1967 if (expect_false (postfork))
1968 if (forkcnt)
1969 {
1970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971 call_pending (EV_A);
1972 }
1973#endif
1974
1281 /* queue check watchers (and execute them) */ 1975 /* queue prepare watchers (and execute them) */
1282 if (expect_false (preparecnt)) 1976 if (expect_false (preparecnt))
1283 { 1977 {
1284 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1978 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1285 call_pending (EV_A); 1979 call_pending (EV_A);
1286 } 1980 }
1287 1981
1982 if (expect_false (!activecnt))
1983 break;
1984
1288 /* we might have forked, so reify kernel state if necessary */ 1985 /* we might have forked, so reify kernel state if necessary */
1289 if (expect_false (postfork)) 1986 if (expect_false (postfork))
1290 loop_fork (EV_A); 1987 loop_fork (EV_A);
1291 1988
1292 /* update fd-related kernel structures */ 1989 /* update fd-related kernel structures */
1293 fd_reify (EV_A); 1990 fd_reify (EV_A);
1294 1991
1295 /* calculate blocking time */ 1992 /* calculate blocking time */
1296 { 1993 {
1297 double block; 1994 ev_tstamp waittime = 0.;
1995 ev_tstamp sleeptime = 0.;
1298 1996
1299 if (flags & EVLOOP_NONBLOCK || idlecnt) 1997 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1300 block = 0.; /* do not block at all */
1301 else
1302 { 1998 {
1303 /* update time to cancel out callback processing overhead */ 1999 /* update time to cancel out callback processing overhead */
1304#if EV_USE_MONOTONIC
1305 if (expect_true (have_monotonic))
1306 time_update_monotonic (EV_A); 2000 time_update (EV_A_ 1e100);
1307 else
1308#endif
1309 {
1310 ev_rt_now = ev_time ();
1311 mn_now = ev_rt_now;
1312 }
1313 2001
1314 block = MAX_BLOCKTIME; 2002 waittime = MAX_BLOCKTIME;
1315 2003
1316 if (timercnt) 2004 if (timercnt)
1317 { 2005 {
1318 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2006 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1319 if (block > to) block = to; 2007 if (waittime > to) waittime = to;
1320 } 2008 }
1321 2009
1322#if EV_PERIODIC_ENABLE 2010#if EV_PERIODIC_ENABLE
1323 if (periodiccnt) 2011 if (periodiccnt)
1324 { 2012 {
1325 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2013 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1326 if (block > to) block = to; 2014 if (waittime > to) waittime = to;
1327 } 2015 }
1328#endif 2016#endif
1329 2017
1330 if (expect_false (block < 0.)) block = 0.; 2018 if (expect_false (waittime < timeout_blocktime))
2019 waittime = timeout_blocktime;
2020
2021 sleeptime = waittime - backend_fudge;
2022
2023 if (expect_true (sleeptime > io_blocktime))
2024 sleeptime = io_blocktime;
2025
2026 if (sleeptime)
2027 {
2028 ev_sleep (sleeptime);
2029 waittime -= sleeptime;
2030 }
1331 } 2031 }
1332 2032
2033 ++loop_count;
1333 backend_poll (EV_A_ block); 2034 backend_poll (EV_A_ waittime);
2035
2036 /* update ev_rt_now, do magic */
2037 time_update (EV_A_ waittime + sleeptime);
1334 } 2038 }
1335
1336 /* update ev_rt_now, do magic */
1337 time_update (EV_A);
1338 2039
1339 /* queue pending timers and reschedule them */ 2040 /* queue pending timers and reschedule them */
1340 timers_reify (EV_A); /* relative timers called last */ 2041 timers_reify (EV_A); /* relative timers called last */
1341#if EV_PERIODIC_ENABLE 2042#if EV_PERIODIC_ENABLE
1342 periodics_reify (EV_A); /* absolute timers called first */ 2043 periodics_reify (EV_A); /* absolute timers called first */
1343#endif 2044#endif
1344 2045
2046#if EV_IDLE_ENABLE
1345 /* queue idle watchers unless other events are pending */ 2047 /* queue idle watchers unless other events are pending */
1346 if (idlecnt && !any_pending (EV_A)) 2048 idle_reify (EV_A);
1347 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2049#endif
1348 2050
1349 /* queue check watchers, to be executed first */ 2051 /* queue check watchers, to be executed first */
1350 if (expect_false (checkcnt)) 2052 if (expect_false (checkcnt))
1351 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1352 2054
1353 call_pending (EV_A); 2055 call_pending (EV_A);
1354
1355 if (expect_false (loop_done))
1356 break;
1357 } 2056 }
2057 while (expect_true (
2058 activecnt
2059 && !loop_done
2060 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2061 ));
1358 2062
1359 if (loop_done == EVUNLOOP_ONE) 2063 if (loop_done == EVUNLOOP_ONE)
1360 loop_done = EVUNLOOP_CANCEL; 2064 loop_done = EVUNLOOP_CANCEL;
1361} 2065}
1362 2066
… …
1389 head = &(*head)->next; 2093 head = &(*head)->next;
1390 } 2094 }
1391} 2095}
1392 2096
1393void inline_speed 2097void inline_speed
1394ev_clear_pending (EV_P_ W w) 2098clear_pending (EV_P_ W w)
1395{ 2099{
1396 if (w->pending) 2100 if (w->pending)
1397 { 2101 {
1398 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2102 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1399 w->pending = 0; 2103 w->pending = 0;
1400 } 2104 }
1401} 2105}
1402 2106
2107int
2108ev_clear_pending (EV_P_ void *w)
2109{
2110 W w_ = (W)w;
2111 int pending = w_->pending;
2112
2113 if (expect_true (pending))
2114 {
2115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2116 w_->pending = 0;
2117 p->w = 0;
2118 return p->events;
2119 }
2120 else
2121 return 0;
2122}
2123
2124void inline_size
2125pri_adjust (EV_P_ W w)
2126{
2127 int pri = w->priority;
2128 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130 w->priority = pri;
2131}
2132
1403void inline_speed 2133void inline_speed
1404ev_start (EV_P_ W w, int active) 2134ev_start (EV_P_ W w, int active)
1405{ 2135{
1406 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2136 pri_adjust (EV_A_ w);
1407 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1408
1409 w->active = active; 2137 w->active = active;
1410 ev_ref (EV_A); 2138 ev_ref (EV_A);
1411} 2139}
1412 2140
1413void inline_size 2141void inline_size
… …
1417 w->active = 0; 2145 w->active = 0;
1418} 2146}
1419 2147
1420/*****************************************************************************/ 2148/*****************************************************************************/
1421 2149
1422void 2150void noinline
1423ev_io_start (EV_P_ ev_io *w) 2151ev_io_start (EV_P_ ev_io *w)
1424{ 2152{
1425 int fd = w->fd; 2153 int fd = w->fd;
1426 2154
1427 if (expect_false (ev_is_active (w))) 2155 if (expect_false (ev_is_active (w)))
1428 return; 2156 return;
1429 2157
1430 assert (("ev_io_start called with negative fd", fd >= 0)); 2158 assert (("ev_io_start called with negative fd", fd >= 0));
2159 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
2160
2161 EV_FREQUENT_CHECK;
1431 2162
1432 ev_start (EV_A_ (W)w, 1); 2163 ev_start (EV_A_ (W)w, 1);
1433 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1434 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2165 wlist_add (&anfds[fd].head, (WL)w);
1435 2166
1436 fd_change (EV_A_ fd); 2167 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1437} 2168 w->events &= ~EV_IOFDSET;
1438 2169
1439void 2170 EV_FREQUENT_CHECK;
2171}
2172
2173void noinline
1440ev_io_stop (EV_P_ ev_io *w) 2174ev_io_stop (EV_P_ ev_io *w)
1441{ 2175{
1442 ev_clear_pending (EV_A_ (W)w); 2176 clear_pending (EV_A_ (W)w);
1443 if (expect_false (!ev_is_active (w))) 2177 if (expect_false (!ev_is_active (w)))
1444 return; 2178 return;
1445 2179
1446 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2180 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1447 2181
2182 EV_FREQUENT_CHECK;
2183
1448 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2184 wlist_del (&anfds[w->fd].head, (WL)w);
1449 ev_stop (EV_A_ (W)w); 2185 ev_stop (EV_A_ (W)w);
1450 2186
1451 fd_change (EV_A_ w->fd); 2187 fd_change (EV_A_ w->fd, 1);
1452}
1453 2188
1454void 2189 EV_FREQUENT_CHECK;
2190}
2191
2192void noinline
1455ev_timer_start (EV_P_ ev_timer *w) 2193ev_timer_start (EV_P_ ev_timer *w)
1456{ 2194{
1457 if (expect_false (ev_is_active (w))) 2195 if (expect_false (ev_is_active (w)))
1458 return; 2196 return;
1459 2197
1460 ((WT)w)->at += mn_now; 2198 ev_at (w) += mn_now;
1461 2199
1462 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2200 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1463 2201
2202 EV_FREQUENT_CHECK;
2203
2204 ++timercnt;
1464 ev_start (EV_A_ (W)w, ++timercnt); 2205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1465 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2206 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1466 timers [timercnt - 1] = w; 2207 ANHE_w (timers [ev_active (w)]) = (WT)w;
1467 upheap ((WT *)timers, timercnt - 1); 2208 ANHE_at_cache (timers [ev_active (w)]);
2209 upheap (timers, ev_active (w));
1468 2210
2211 EV_FREQUENT_CHECK;
2212
1469 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2213 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1470} 2214}
1471 2215
1472void 2216void noinline
1473ev_timer_stop (EV_P_ ev_timer *w) 2217ev_timer_stop (EV_P_ ev_timer *w)
1474{ 2218{
1475 ev_clear_pending (EV_A_ (W)w); 2219 clear_pending (EV_A_ (W)w);
1476 if (expect_false (!ev_is_active (w))) 2220 if (expect_false (!ev_is_active (w)))
1477 return; 2221 return;
1478 2222
2223 EV_FREQUENT_CHECK;
2224
2225 {
2226 int active = ev_active (w);
2227
1479 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2228 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1480 2229
2230 --timercnt;
2231
1481 if (expect_true (((W)w)->active < timercnt--)) 2232 if (expect_true (active < timercnt + HEAP0))
1482 { 2233 {
1483 timers [((W)w)->active - 1] = timers [timercnt]; 2234 timers [active] = timers [timercnt + HEAP0];
1484 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2235 adjustheap (timers, timercnt, active);
1485 } 2236 }
2237 }
1486 2238
1487 ((WT)w)->at -= mn_now; 2239 EV_FREQUENT_CHECK;
2240
2241 ev_at (w) -= mn_now;
1488 2242
1489 ev_stop (EV_A_ (W)w); 2243 ev_stop (EV_A_ (W)w);
1490} 2244}
1491 2245
1492void 2246void noinline
1493ev_timer_again (EV_P_ ev_timer *w) 2247ev_timer_again (EV_P_ ev_timer *w)
1494{ 2248{
2249 EV_FREQUENT_CHECK;
2250
1495 if (ev_is_active (w)) 2251 if (ev_is_active (w))
1496 { 2252 {
1497 if (w->repeat) 2253 if (w->repeat)
1498 { 2254 {
1499 ((WT)w)->at = mn_now + w->repeat; 2255 ev_at (w) = mn_now + w->repeat;
2256 ANHE_at_cache (timers [ev_active (w)]);
1500 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2257 adjustheap (timers, timercnt, ev_active (w));
1501 } 2258 }
1502 else 2259 else
1503 ev_timer_stop (EV_A_ w); 2260 ev_timer_stop (EV_A_ w);
1504 } 2261 }
1505 else if (w->repeat) 2262 else if (w->repeat)
1506 { 2263 {
1507 w->at = w->repeat; 2264 ev_at (w) = w->repeat;
1508 ev_timer_start (EV_A_ w); 2265 ev_timer_start (EV_A_ w);
1509 } 2266 }
2267
2268 EV_FREQUENT_CHECK;
1510} 2269}
1511 2270
1512#if EV_PERIODIC_ENABLE 2271#if EV_PERIODIC_ENABLE
1513void 2272void noinline
1514ev_periodic_start (EV_P_ ev_periodic *w) 2273ev_periodic_start (EV_P_ ev_periodic *w)
1515{ 2274{
1516 if (expect_false (ev_is_active (w))) 2275 if (expect_false (ev_is_active (w)))
1517 return; 2276 return;
1518 2277
1519 if (w->reschedule_cb) 2278 if (w->reschedule_cb)
1520 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2279 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1521 else if (w->interval) 2280 else if (w->interval)
1522 { 2281 {
1523 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2282 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1524 /* this formula differs from the one in periodic_reify because we do not always round up */ 2283 /* this formula differs from the one in periodic_reify because we do not always round up */
1525 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2284 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1526 } 2285 }
2286 else
2287 ev_at (w) = w->offset;
1527 2288
2289 EV_FREQUENT_CHECK;
2290
2291 ++periodiccnt;
1528 ev_start (EV_A_ (W)w, ++periodiccnt); 2292 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1529 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2293 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1530 periodics [periodiccnt - 1] = w; 2294 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1531 upheap ((WT *)periodics, periodiccnt - 1); 2295 ANHE_at_cache (periodics [ev_active (w)]);
2296 upheap (periodics, ev_active (w));
1532 2297
2298 EV_FREQUENT_CHECK;
2299
1533 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2300 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1534} 2301}
1535 2302
1536void 2303void noinline
1537ev_periodic_stop (EV_P_ ev_periodic *w) 2304ev_periodic_stop (EV_P_ ev_periodic *w)
1538{ 2305{
1539 ev_clear_pending (EV_A_ (W)w); 2306 clear_pending (EV_A_ (W)w);
1540 if (expect_false (!ev_is_active (w))) 2307 if (expect_false (!ev_is_active (w)))
1541 return; 2308 return;
1542 2309
2310 EV_FREQUENT_CHECK;
2311
2312 {
2313 int active = ev_active (w);
2314
1543 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2315 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1544 2316
2317 --periodiccnt;
2318
1545 if (expect_true (((W)w)->active < periodiccnt--)) 2319 if (expect_true (active < periodiccnt + HEAP0))
1546 { 2320 {
1547 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2321 periodics [active] = periodics [periodiccnt + HEAP0];
1548 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2322 adjustheap (periodics, periodiccnt, active);
1549 } 2323 }
2324 }
2325
2326 EV_FREQUENT_CHECK;
1550 2327
1551 ev_stop (EV_A_ (W)w); 2328 ev_stop (EV_A_ (W)w);
1552} 2329}
1553 2330
1554void 2331void noinline
1555ev_periodic_again (EV_P_ ev_periodic *w) 2332ev_periodic_again (EV_P_ ev_periodic *w)
1556{ 2333{
1557 /* TODO: use adjustheap and recalculation */ 2334 /* TODO: use adjustheap and recalculation */
1558 ev_periodic_stop (EV_A_ w); 2335 ev_periodic_stop (EV_A_ w);
1559 ev_periodic_start (EV_A_ w); 2336 ev_periodic_start (EV_A_ w);
… …
1562 2339
1563#ifndef SA_RESTART 2340#ifndef SA_RESTART
1564# define SA_RESTART 0 2341# define SA_RESTART 0
1565#endif 2342#endif
1566 2343
1567void 2344void noinline
1568ev_signal_start (EV_P_ ev_signal *w) 2345ev_signal_start (EV_P_ ev_signal *w)
1569{ 2346{
1570#if EV_MULTIPLICITY 2347#if EV_MULTIPLICITY
1571 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2348 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1572#endif 2349#endif
1573 if (expect_false (ev_is_active (w))) 2350 if (expect_false (ev_is_active (w)))
1574 return; 2351 return;
1575 2352
1576 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2353 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1577 2354
2355 evpipe_init (EV_A);
2356
2357 EV_FREQUENT_CHECK;
2358
2359 {
2360#ifndef _WIN32
2361 sigset_t full, prev;
2362 sigfillset (&full);
2363 sigprocmask (SIG_SETMASK, &full, &prev);
2364#endif
2365
2366 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2367
2368#ifndef _WIN32
2369 sigprocmask (SIG_SETMASK, &prev, 0);
2370#endif
2371 }
2372
1578 ev_start (EV_A_ (W)w, 1); 2373 ev_start (EV_A_ (W)w, 1);
1579 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1580 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2374 wlist_add (&signals [w->signum - 1].head, (WL)w);
1581 2375
1582 if (!((WL)w)->next) 2376 if (!((WL)w)->next)
1583 { 2377 {
1584#if _WIN32 2378#if _WIN32
1585 signal (w->signum, sighandler); 2379 signal (w->signum, ev_sighandler);
1586#else 2380#else
1587 struct sigaction sa; 2381 struct sigaction sa;
1588 sa.sa_handler = sighandler; 2382 sa.sa_handler = ev_sighandler;
1589 sigfillset (&sa.sa_mask); 2383 sigfillset (&sa.sa_mask);
1590 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2384 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1591 sigaction (w->signum, &sa, 0); 2385 sigaction (w->signum, &sa, 0);
1592#endif 2386#endif
1593 } 2387 }
1594}
1595 2388
1596void 2389 EV_FREQUENT_CHECK;
2390}
2391
2392void noinline
1597ev_signal_stop (EV_P_ ev_signal *w) 2393ev_signal_stop (EV_P_ ev_signal *w)
1598{ 2394{
1599 ev_clear_pending (EV_A_ (W)w); 2395 clear_pending (EV_A_ (W)w);
1600 if (expect_false (!ev_is_active (w))) 2396 if (expect_false (!ev_is_active (w)))
1601 return; 2397 return;
1602 2398
2399 EV_FREQUENT_CHECK;
2400
1603 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2401 wlist_del (&signals [w->signum - 1].head, (WL)w);
1604 ev_stop (EV_A_ (W)w); 2402 ev_stop (EV_A_ (W)w);
1605 2403
1606 if (!signals [w->signum - 1].head) 2404 if (!signals [w->signum - 1].head)
1607 signal (w->signum, SIG_DFL); 2405 signal (w->signum, SIG_DFL);
2406
2407 EV_FREQUENT_CHECK;
1608} 2408}
1609 2409
1610void 2410void
1611ev_child_start (EV_P_ ev_child *w) 2411ev_child_start (EV_P_ ev_child *w)
1612{ 2412{
… …
1614 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2414 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1615#endif 2415#endif
1616 if (expect_false (ev_is_active (w))) 2416 if (expect_false (ev_is_active (w)))
1617 return; 2417 return;
1618 2418
2419 EV_FREQUENT_CHECK;
2420
1619 ev_start (EV_A_ (W)w, 1); 2421 ev_start (EV_A_ (W)w, 1);
1620 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2422 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2423
2424 EV_FREQUENT_CHECK;
1621} 2425}
1622 2426
1623void 2427void
1624ev_child_stop (EV_P_ ev_child *w) 2428ev_child_stop (EV_P_ ev_child *w)
1625{ 2429{
1626 ev_clear_pending (EV_A_ (W)w); 2430 clear_pending (EV_A_ (W)w);
1627 if (expect_false (!ev_is_active (w))) 2431 if (expect_false (!ev_is_active (w)))
1628 return; 2432 return;
1629 2433
2434 EV_FREQUENT_CHECK;
2435
1630 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2436 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1631 ev_stop (EV_A_ (W)w); 2437 ev_stop (EV_A_ (W)w);
2438
2439 EV_FREQUENT_CHECK;
1632} 2440}
1633 2441
1634#if EV_STAT_ENABLE 2442#if EV_STAT_ENABLE
1635 2443
1636# ifdef _WIN32 2444# ifdef _WIN32
2445# undef lstat
1637# define lstat(a,b) stat(a,b) 2446# define lstat(a,b) _stati64 (a,b)
1638# endif 2447# endif
1639 2448
1640#define DEF_STAT_INTERVAL 5.0074891 2449#define DEF_STAT_INTERVAL 5.0074891
2450#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1641#define MIN_STAT_INTERVAL 0.1074891 2451#define MIN_STAT_INTERVAL 0.1074891
2452
2453static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2454
2455#if EV_USE_INOTIFY
2456# define EV_INOTIFY_BUFSIZE 8192
2457
2458static void noinline
2459infy_add (EV_P_ ev_stat *w)
2460{
2461 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);
2462
2463 if (w->wd < 0)
2464 {
2465 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2466 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2467
2468 /* monitor some parent directory for speedup hints */
2469 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2470 /* but an efficiency issue only */
2471 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2472 {
2473 char path [4096];
2474 strcpy (path, w->path);
2475
2476 do
2477 {
2478 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2479 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2480
2481 char *pend = strrchr (path, '/');
2482
2483 if (!pend)
2484 break; /* whoops, no '/', complain to your admin */
2485
2486 *pend = 0;
2487 w->wd = inotify_add_watch (fs_fd, path, mask);
2488 }
2489 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2490 }
2491 }
2492 else
2493 {
2494 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2495
2496 /* now local changes will be tracked by inotify, but remote changes won't */
2497 /* unless the filesystem it known to be local, we therefore still poll */
2498 /* also do poll on <2.6.25, but with normal frequency */
2499 struct statfs sfs;
2500
2501 if (fs_2625 && !statfs (w->path, &sfs))
2502 if (sfs.f_type == 0x1373 /* devfs */
2503 || sfs.f_type == 0xEF53 /* ext2/3 */
2504 || sfs.f_type == 0x3153464a /* jfs */
2505 || sfs.f_type == 0x52654973 /* reiser3 */
2506 || sfs.f_type == 0x01021994 /* tempfs */
2507 || sfs.f_type == 0x58465342 /* xfs */)
2508 return;
2509
2510 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2511 ev_timer_again (EV_A_ &w->timer);
2512 }
2513}
2514
2515static void noinline
2516infy_del (EV_P_ ev_stat *w)
2517{
2518 int slot;
2519 int wd = w->wd;
2520
2521 if (wd < 0)
2522 return;
2523
2524 w->wd = -2;
2525 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2526 wlist_del (&fs_hash [slot].head, (WL)w);
2527
2528 /* remove this watcher, if others are watching it, they will rearm */
2529 inotify_rm_watch (fs_fd, wd);
2530}
2531
2532static void noinline
2533infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2534{
2535 if (slot < 0)
2536 /* overflow, need to check for all hash slots */
2537 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2538 infy_wd (EV_A_ slot, wd, ev);
2539 else
2540 {
2541 WL w_;
2542
2543 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2544 {
2545 ev_stat *w = (ev_stat *)w_;
2546 w_ = w_->next; /* lets us remove this watcher and all before it */
2547
2548 if (w->wd == wd || wd == -1)
2549 {
2550 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2551 {
2552 w->wd = -1;
2553 infy_add (EV_A_ w); /* re-add, no matter what */
2554 }
2555
2556 stat_timer_cb (EV_A_ &w->timer, 0);
2557 }
2558 }
2559 }
2560}
2561
2562static void
2563infy_cb (EV_P_ ev_io *w, int revents)
2564{
2565 char buf [EV_INOTIFY_BUFSIZE];
2566 struct inotify_event *ev = (struct inotify_event *)buf;
2567 int ofs;
2568 int len = read (fs_fd, buf, sizeof (buf));
2569
2570 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2572}
2573
2574void inline_size
2575check_2625 (EV_P)
2576{
2577 /* kernels < 2.6.25 are borked
2578 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2579 */
2580 struct utsname buf;
2581 int major, minor, micro;
2582
2583 if (uname (&buf))
2584 return;
2585
2586 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2587 return;
2588
2589 if (major < 2
2590 || (major == 2 && minor < 6)
2591 || (major == 2 && minor == 6 && micro < 25))
2592 return;
2593
2594 fs_2625 = 1;
2595}
2596
2597void inline_size
2598infy_init (EV_P)
2599{
2600 if (fs_fd != -2)
2601 return;
2602
2603 fs_fd = -1;
2604
2605 check_2625 (EV_A);
2606
2607 fs_fd = inotify_init ();
2608
2609 if (fs_fd >= 0)
2610 {
2611 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2612 ev_set_priority (&fs_w, EV_MAXPRI);
2613 ev_io_start (EV_A_ &fs_w);
2614 }
2615}
2616
2617void inline_size
2618infy_fork (EV_P)
2619{
2620 int slot;
2621
2622 if (fs_fd < 0)
2623 return;
2624
2625 close (fs_fd);
2626 fs_fd = inotify_init ();
2627
2628 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2629 {
2630 WL w_ = fs_hash [slot].head;
2631 fs_hash [slot].head = 0;
2632
2633 while (w_)
2634 {
2635 ev_stat *w = (ev_stat *)w_;
2636 w_ = w_->next; /* lets us add this watcher */
2637
2638 w->wd = -1;
2639
2640 if (fs_fd >= 0)
2641 infy_add (EV_A_ w); /* re-add, no matter what */
2642 else
2643 ev_timer_again (EV_A_ &w->timer);
2644 }
2645 }
2646}
2647
2648#endif
2649
2650#ifdef _WIN32
2651# define EV_LSTAT(p,b) _stati64 (p, b)
2652#else
2653# define EV_LSTAT(p,b) lstat (p, b)
2654#endif
1642 2655
1643void 2656void
1644ev_stat_stat (EV_P_ ev_stat *w) 2657ev_stat_stat (EV_P_ ev_stat *w)
1645{ 2658{
1646 if (lstat (w->path, &w->attr) < 0) 2659 if (lstat (w->path, &w->attr) < 0)
1647 w->attr.st_nlink = 0; 2660 w->attr.st_nlink = 0;
1648 else if (!w->attr.st_nlink) 2661 else if (!w->attr.st_nlink)
1649 w->attr.st_nlink = 1; 2662 w->attr.st_nlink = 1;
1650} 2663}
1651 2664
1652static void 2665static void noinline
1653stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2666stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1654{ 2667{
1655 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2668 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1656 2669
1657 /* we copy this here each the time so that */ 2670 /* we copy this here each the time so that */
1658 /* prev has the old value when the callback gets invoked */ 2671 /* prev has the old value when the callback gets invoked */
1659 w->prev = w->attr; 2672 w->prev = w->attr;
1660 ev_stat_stat (EV_A_ w); 2673 ev_stat_stat (EV_A_ w);
1661 2674
1662 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2675 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2676 if (
2677 w->prev.st_dev != w->attr.st_dev
2678 || w->prev.st_ino != w->attr.st_ino
2679 || w->prev.st_mode != w->attr.st_mode
2680 || w->prev.st_nlink != w->attr.st_nlink
2681 || w->prev.st_uid != w->attr.st_uid
2682 || w->prev.st_gid != w->attr.st_gid
2683 || w->prev.st_rdev != w->attr.st_rdev
2684 || w->prev.st_size != w->attr.st_size
2685 || w->prev.st_atime != w->attr.st_atime
2686 || w->prev.st_mtime != w->attr.st_mtime
2687 || w->prev.st_ctime != w->attr.st_ctime
2688 ) {
2689 #if EV_USE_INOTIFY
2690 if (fs_fd >= 0)
2691 {
2692 infy_del (EV_A_ w);
2693 infy_add (EV_A_ w);
2694 ev_stat_stat (EV_A_ w); /* avoid race... */
2695 }
2696 #endif
2697
1663 ev_feed_event (EV_A_ w, EV_STAT); 2698 ev_feed_event (EV_A_ w, EV_STAT);
2699 }
1664} 2700}
1665 2701
1666void 2702void
1667ev_stat_start (EV_P_ ev_stat *w) 2703ev_stat_start (EV_P_ ev_stat *w)
1668{ 2704{
1669 if (expect_false (ev_is_active (w))) 2705 if (expect_false (ev_is_active (w)))
1670 return; 2706 return;
1671 2707
1672 /* since we use memcmp, we need to clear any padding data etc. */
1673 memset (&w->prev, 0, sizeof (ev_statdata));
1674 memset (&w->attr, 0, sizeof (ev_statdata));
1675
1676 ev_stat_stat (EV_A_ w); 2708 ev_stat_stat (EV_A_ w);
1677 2709
2710 if (w->interval < MIN_STAT_INTERVAL && w->interval)
1678 if (w->interval < MIN_STAT_INTERVAL) 2711 w->interval = MIN_STAT_INTERVAL;
1679 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1680 2712
1681 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2713 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1682 ev_set_priority (&w->timer, ev_priority (w)); 2714 ev_set_priority (&w->timer, ev_priority (w));
2715
2716#if EV_USE_INOTIFY
2717 infy_init (EV_A);
2718
2719 if (fs_fd >= 0)
2720 infy_add (EV_A_ w);
2721 else
2722#endif
1683 ev_timer_start (EV_A_ &w->timer); 2723 ev_timer_again (EV_A_ &w->timer);
1684 2724
1685 ev_start (EV_A_ (W)w, 1); 2725 ev_start (EV_A_ (W)w, 1);
2726
2727 EV_FREQUENT_CHECK;
1686} 2728}
1687 2729
1688void 2730void
1689ev_stat_stop (EV_P_ ev_stat *w) 2731ev_stat_stop (EV_P_ ev_stat *w)
1690{ 2732{
1691 ev_clear_pending (EV_A_ (W)w); 2733 clear_pending (EV_A_ (W)w);
1692 if (expect_false (!ev_is_active (w))) 2734 if (expect_false (!ev_is_active (w)))
1693 return; 2735 return;
1694 2736
2737 EV_FREQUENT_CHECK;
2738
2739#if EV_USE_INOTIFY
2740 infy_del (EV_A_ w);
2741#endif
1695 ev_timer_stop (EV_A_ &w->timer); 2742 ev_timer_stop (EV_A_ &w->timer);
1696 2743
1697 ev_stop (EV_A_ (W)w); 2744 ev_stop (EV_A_ (W)w);
1698}
1699#endif
1700 2745
2746 EV_FREQUENT_CHECK;
2747}
2748#endif
2749
2750#if EV_IDLE_ENABLE
1701void 2751void
1702ev_idle_start (EV_P_ ev_idle *w) 2752ev_idle_start (EV_P_ ev_idle *w)
1703{ 2753{
1704 if (expect_false (ev_is_active (w))) 2754 if (expect_false (ev_is_active (w)))
1705 return; 2755 return;
1706 2756
2757 pri_adjust (EV_A_ (W)w);
2758
2759 EV_FREQUENT_CHECK;
2760
2761 {
2762 int active = ++idlecnt [ABSPRI (w)];
2763
2764 ++idleall;
1707 ev_start (EV_A_ (W)w, ++idlecnt); 2765 ev_start (EV_A_ (W)w, active);
2766
1708 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2767 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1709 idles [idlecnt - 1] = w; 2768 idles [ABSPRI (w)][active - 1] = w;
2769 }
2770
2771 EV_FREQUENT_CHECK;
1710} 2772}
1711 2773
1712void 2774void
1713ev_idle_stop (EV_P_ ev_idle *w) 2775ev_idle_stop (EV_P_ ev_idle *w)
1714{ 2776{
1715 ev_clear_pending (EV_A_ (W)w); 2777 clear_pending (EV_A_ (W)w);
1716 if (expect_false (!ev_is_active (w))) 2778 if (expect_false (!ev_is_active (w)))
1717 return; 2779 return;
1718 2780
2781 EV_FREQUENT_CHECK;
2782
1719 { 2783 {
1720 int active = ((W)w)->active; 2784 int active = ev_active (w);
1721 idles [active - 1] = idles [--idlecnt]; 2785
1722 ((W)idles [active - 1])->active = active; 2786 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2787 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2788
2789 ev_stop (EV_A_ (W)w);
2790 --idleall;
1723 } 2791 }
1724 2792
1725 ev_stop (EV_A_ (W)w); 2793 EV_FREQUENT_CHECK;
1726} 2794}
2795#endif
1727 2796
1728void 2797void
1729ev_prepare_start (EV_P_ ev_prepare *w) 2798ev_prepare_start (EV_P_ ev_prepare *w)
1730{ 2799{
1731 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
1732 return; 2801 return;
2802
2803 EV_FREQUENT_CHECK;
1733 2804
1734 ev_start (EV_A_ (W)w, ++preparecnt); 2805 ev_start (EV_A_ (W)w, ++preparecnt);
1735 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2806 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1736 prepares [preparecnt - 1] = w; 2807 prepares [preparecnt - 1] = w;
2808
2809 EV_FREQUENT_CHECK;
1737} 2810}
1738 2811
1739void 2812void
1740ev_prepare_stop (EV_P_ ev_prepare *w) 2813ev_prepare_stop (EV_P_ ev_prepare *w)
1741{ 2814{
1742 ev_clear_pending (EV_A_ (W)w); 2815 clear_pending (EV_A_ (W)w);
1743 if (expect_false (!ev_is_active (w))) 2816 if (expect_false (!ev_is_active (w)))
1744 return; 2817 return;
1745 2818
2819 EV_FREQUENT_CHECK;
2820
1746 { 2821 {
1747 int active = ((W)w)->active; 2822 int active = ev_active (w);
2823
1748 prepares [active - 1] = prepares [--preparecnt]; 2824 prepares [active - 1] = prepares [--preparecnt];
1749 ((W)prepares [active - 1])->active = active; 2825 ev_active (prepares [active - 1]) = active;
1750 } 2826 }
1751 2827
1752 ev_stop (EV_A_ (W)w); 2828 ev_stop (EV_A_ (W)w);
2829
2830 EV_FREQUENT_CHECK;
1753} 2831}
1754 2832
1755void 2833void
1756ev_check_start (EV_P_ ev_check *w) 2834ev_check_start (EV_P_ ev_check *w)
1757{ 2835{
1758 if (expect_false (ev_is_active (w))) 2836 if (expect_false (ev_is_active (w)))
1759 return; 2837 return;
2838
2839 EV_FREQUENT_CHECK;
1760 2840
1761 ev_start (EV_A_ (W)w, ++checkcnt); 2841 ev_start (EV_A_ (W)w, ++checkcnt);
1762 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2842 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1763 checks [checkcnt - 1] = w; 2843 checks [checkcnt - 1] = w;
2844
2845 EV_FREQUENT_CHECK;
1764} 2846}
1765 2847
1766void 2848void
1767ev_check_stop (EV_P_ ev_check *w) 2849ev_check_stop (EV_P_ ev_check *w)
1768{ 2850{
1769 ev_clear_pending (EV_A_ (W)w); 2851 clear_pending (EV_A_ (W)w);
1770 if (expect_false (!ev_is_active (w))) 2852 if (expect_false (!ev_is_active (w)))
1771 return; 2853 return;
1772 2854
2855 EV_FREQUENT_CHECK;
2856
1773 { 2857 {
1774 int active = ((W)w)->active; 2858 int active = ev_active (w);
2859
1775 checks [active - 1] = checks [--checkcnt]; 2860 checks [active - 1] = checks [--checkcnt];
1776 ((W)checks [active - 1])->active = active; 2861 ev_active (checks [active - 1]) = active;
1777 } 2862 }
1778 2863
1779 ev_stop (EV_A_ (W)w); 2864 ev_stop (EV_A_ (W)w);
2865
2866 EV_FREQUENT_CHECK;
1780} 2867}
1781 2868
1782#if EV_EMBED_ENABLE 2869#if EV_EMBED_ENABLE
1783void noinline 2870void noinline
1784ev_embed_sweep (EV_P_ ev_embed *w) 2871ev_embed_sweep (EV_P_ ev_embed *w)
1785{ 2872{
1786 ev_loop (w->loop, EVLOOP_NONBLOCK); 2873 ev_loop (w->other, EVLOOP_NONBLOCK);
1787} 2874}
1788 2875
1789static void 2876static void
1790embed_cb (EV_P_ ev_io *io, int revents) 2877embed_io_cb (EV_P_ ev_io *io, int revents)
1791{ 2878{
1792 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2879 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1793 2880
1794 if (ev_cb (w)) 2881 if (ev_cb (w))
1795 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2882 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1796 else 2883 else
1797 ev_embed_sweep (loop, w); 2884 ev_loop (w->other, EVLOOP_NONBLOCK);
1798} 2885}
2886
2887static void
2888embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2889{
2890 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2891
2892 {
2893 struct ev_loop *loop = w->other;
2894
2895 while (fdchangecnt)
2896 {
2897 fd_reify (EV_A);
2898 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2899 }
2900 }
2901}
2902
2903static void
2904embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2905{
2906 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2907
2908 {
2909 struct ev_loop *loop = w->other;
2910
2911 ev_loop_fork (EV_A);
2912 }
2913}
2914
2915#if 0
2916static void
2917embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2918{
2919 ev_idle_stop (EV_A_ idle);
2920}
2921#endif
1799 2922
1800void 2923void
1801ev_embed_start (EV_P_ ev_embed *w) 2924ev_embed_start (EV_P_ ev_embed *w)
1802{ 2925{
1803 if (expect_false (ev_is_active (w))) 2926 if (expect_false (ev_is_active (w)))
1804 return; 2927 return;
1805 2928
1806 { 2929 {
1807 struct ev_loop *loop = w->loop; 2930 struct ev_loop *loop = w->other;
1808 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2931 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1809 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2932 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1810 } 2933 }
2934
2935 EV_FREQUENT_CHECK;
1811 2936
1812 ev_set_priority (&w->io, ev_priority (w)); 2937 ev_set_priority (&w->io, ev_priority (w));
1813 ev_io_start (EV_A_ &w->io); 2938 ev_io_start (EV_A_ &w->io);
1814 2939
2940 ev_prepare_init (&w->prepare, embed_prepare_cb);
2941 ev_set_priority (&w->prepare, EV_MINPRI);
2942 ev_prepare_start (EV_A_ &w->prepare);
2943
2944 ev_fork_init (&w->fork, embed_fork_cb);
2945 ev_fork_start (EV_A_ &w->fork);
2946
2947 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2948
1815 ev_start (EV_A_ (W)w, 1); 2949 ev_start (EV_A_ (W)w, 1);
2950
2951 EV_FREQUENT_CHECK;
1816} 2952}
1817 2953
1818void 2954void
1819ev_embed_stop (EV_P_ ev_embed *w) 2955ev_embed_stop (EV_P_ ev_embed *w)
1820{ 2956{
1821 ev_clear_pending (EV_A_ (W)w); 2957 clear_pending (EV_A_ (W)w);
1822 if (expect_false (!ev_is_active (w))) 2958 if (expect_false (!ev_is_active (w)))
1823 return; 2959 return;
1824 2960
2961 EV_FREQUENT_CHECK;
2962
1825 ev_io_stop (EV_A_ &w->io); 2963 ev_io_stop (EV_A_ &w->io);
2964 ev_prepare_stop (EV_A_ &w->prepare);
2965 ev_fork_stop (EV_A_ &w->fork);
2966
2967 EV_FREQUENT_CHECK;
2968}
2969#endif
2970
2971#if EV_FORK_ENABLE
2972void
2973ev_fork_start (EV_P_ ev_fork *w)
2974{
2975 if (expect_false (ev_is_active (w)))
2976 return;
2977
2978 EV_FREQUENT_CHECK;
2979
2980 ev_start (EV_A_ (W)w, ++forkcnt);
2981 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2982 forks [forkcnt - 1] = w;
2983
2984 EV_FREQUENT_CHECK;
2985}
2986
2987void
2988ev_fork_stop (EV_P_ ev_fork *w)
2989{
2990 clear_pending (EV_A_ (W)w);
2991 if (expect_false (!ev_is_active (w)))
2992 return;
2993
2994 EV_FREQUENT_CHECK;
2995
2996 {
2997 int active = ev_active (w);
2998
2999 forks [active - 1] = forks [--forkcnt];
3000 ev_active (forks [active - 1]) = active;
3001 }
1826 3002
1827 ev_stop (EV_A_ (W)w); 3003 ev_stop (EV_A_ (W)w);
3004
3005 EV_FREQUENT_CHECK;
3006}
3007#endif
3008
3009#if EV_ASYNC_ENABLE
3010void
3011ev_async_start (EV_P_ ev_async *w)
3012{
3013 if (expect_false (ev_is_active (w)))
3014 return;
3015
3016 evpipe_init (EV_A);
3017
3018 EV_FREQUENT_CHECK;
3019
3020 ev_start (EV_A_ (W)w, ++asynccnt);
3021 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3022 asyncs [asynccnt - 1] = w;
3023
3024 EV_FREQUENT_CHECK;
3025}
3026
3027void
3028ev_async_stop (EV_P_ ev_async *w)
3029{
3030 clear_pending (EV_A_ (W)w);
3031 if (expect_false (!ev_is_active (w)))
3032 return;
3033
3034 EV_FREQUENT_CHECK;
3035
3036 {
3037 int active = ev_active (w);
3038
3039 asyncs [active - 1] = asyncs [--asynccnt];
3040 ev_active (asyncs [active - 1]) = active;
3041 }
3042
3043 ev_stop (EV_A_ (W)w);
3044
3045 EV_FREQUENT_CHECK;
3046}
3047
3048void
3049ev_async_send (EV_P_ ev_async *w)
3050{
3051 w->sent = 1;
3052 evpipe_write (EV_A_ &gotasync);
1828} 3053}
1829#endif 3054#endif
1830 3055
1831/*****************************************************************************/ 3056/*****************************************************************************/
1832 3057
… …
1842once_cb (EV_P_ struct ev_once *once, int revents) 3067once_cb (EV_P_ struct ev_once *once, int revents)
1843{ 3068{
1844 void (*cb)(int revents, void *arg) = once->cb; 3069 void (*cb)(int revents, void *arg) = once->cb;
1845 void *arg = once->arg; 3070 void *arg = once->arg;
1846 3071
1847 ev_io_stop (EV_A_ &once->io); 3072 ev_io_stop (EV_A_ &once->io);
1848 ev_timer_stop (EV_A_ &once->to); 3073 ev_timer_stop (EV_A_ &once->to);
1849 ev_free (once); 3074 ev_free (once);
1850 3075
1851 cb (revents, arg); 3076 cb (revents, arg);
1852} 3077}
1853 3078
1854static void 3079static void
1855once_cb_io (EV_P_ ev_io *w, int revents) 3080once_cb_io (EV_P_ ev_io *w, int revents)
1856{ 3081{
1857 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3082 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3083
3084 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1858} 3085}
1859 3086
1860static void 3087static void
1861once_cb_to (EV_P_ ev_timer *w, int revents) 3088once_cb_to (EV_P_ ev_timer *w, int revents)
1862{ 3089{
1863 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3090 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3091
3092 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1864} 3093}
1865 3094
1866void 3095void
1867ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3096ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1868{ 3097{
… …
1890 ev_timer_set (&once->to, timeout, 0.); 3119 ev_timer_set (&once->to, timeout, 0.);
1891 ev_timer_start (EV_A_ &once->to); 3120 ev_timer_start (EV_A_ &once->to);
1892 } 3121 }
1893} 3122}
1894 3123
3124#if EV_MULTIPLICITY
3125 #include "ev_wrap.h"
3126#endif
3127
1895#ifdef __cplusplus 3128#ifdef __cplusplus
1896} 3129}
1897#endif 3130#endif
1898 3131

Diff Legend

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