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Comparing libev/ev.c (file contents):
Revision 1.121 by root, Fri Nov 16 10:37:28 2007 UTC vs.
Revision 1.251 by root, Thu May 22 03:42:34 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
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
37# include "config.h" 49# include "config.h"
50# endif
38 51
39# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 53# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
42# endif 55# endif
43# ifndef EV_USE_REALTIME 56# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
45# endif 58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
46# endif 66# endif
47 67
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
50# endif 74# endif
51 75
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
54# endif 82# endif
55 83
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
58# endif 90# endif
59 91
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
62# endif 98# endif
63 99
64# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
65# define EV_USE_PORT 1 102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
66# endif 106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
67 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
68#endif 132#endif
69 133
70#include <math.h> 134#include <math.h>
71#include <stdlib.h> 135#include <stdlib.h>
72#include <fcntl.h> 136#include <fcntl.h>
… …
79#include <sys/types.h> 143#include <sys/types.h>
80#include <time.h> 144#include <time.h>
81 145
82#include <signal.h> 146#include <signal.h>
83 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
84#ifndef _WIN32 154#ifndef _WIN32
85# include <unistd.h>
86# include <sys/time.h> 155# include <sys/time.h>
87# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
88#else 158#else
89# define WIN32_LEAN_AND_MEAN 159# define WIN32_LEAN_AND_MEAN
90# include <windows.h> 160# include <windows.h>
91# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
92# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
93# endif 163# endif
94#endif 164#endif
95 165
96/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
97 167
98#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
99# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
100#endif 170#endif
101 171
102#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
103# define EV_USE_REALTIME 0 173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
104#endif 178#endif
105 179
106#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
107# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
108#endif 182#endif
… …
114# define EV_USE_POLL 1 188# define EV_USE_POLL 1
115# endif 189# endif
116#endif 190#endif
117 191
118#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
119# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
120#endif 198#endif
121 199
122#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
123# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
124#endif 202#endif
125 203
126#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
127# define EV_USE_PORT 0 205# define EV_USE_PORT 0
128#endif 206#endif
129 207
130/**/ 208#ifndef EV_USE_INOTIFY
131 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
132/* darwin simply cannot be helped */ 210# define EV_USE_INOTIFY 1
133#ifdef __APPLE__ 211# else
134# undef EV_USE_POLL 212# define EV_USE_INOTIFY 0
135# undef EV_USE_KQUEUE
136#endif 213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240#if 0 /* debugging */
241# define EV_VERIFY 3
242# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1
244#endif
245
246#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL
248#endif
249
250#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL
252#endif
253
254#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL
256#endif
257
258/* this block fixes any misconfiguration where we know we run into trouble otherwise */
137 259
138#ifndef CLOCK_MONOTONIC 260#ifndef CLOCK_MONOTONIC
139# undef EV_USE_MONOTONIC 261# undef EV_USE_MONOTONIC
140# define EV_USE_MONOTONIC 0 262# define EV_USE_MONOTONIC 0
141#endif 263#endif
… …
143#ifndef CLOCK_REALTIME 265#ifndef CLOCK_REALTIME
144# undef EV_USE_REALTIME 266# undef EV_USE_REALTIME
145# define EV_USE_REALTIME 0 267# define EV_USE_REALTIME 0
146#endif 268#endif
147 269
270#if !EV_STAT_ENABLE
271# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0
273#endif
274
275#if !EV_USE_NANOSLEEP
276# ifndef _WIN32
277# include <sys/select.h>
278# endif
279#endif
280
281#if EV_USE_INOTIFY
282# include <sys/inotify.h>
283#endif
284
148#if EV_SELECT_IS_WINSOCKET 285#if EV_SELECT_IS_WINSOCKET
149# include <winsock.h> 286# include <winsock.h>
150#endif 287#endif
151 288
289#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h>
292# ifdef __cplusplus
293extern "C" {
294# endif
295int eventfd (unsigned int initval, int flags);
296# ifdef __cplusplus
297}
298# endif
299#endif
300
152/**/ 301/**/
302
303#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
305#else
306# define EV_FREQUENT_CHECK do { } while (0)
307#endif
308
309/*
310 * This is used to avoid floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
153 318
154#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
155#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
156#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
157/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
158 322
159#ifdef EV_H
160# include EV_H
161#else
162# include "ev.h"
163#endif
164
165#if __GNUC__ >= 3 323#if __GNUC__ >= 4
166# define expect(expr,value) __builtin_expect ((expr),(value)) 324# define expect(expr,value) __builtin_expect ((expr),(value))
167# define inline inline 325# define noinline __attribute__ ((noinline))
168#else 326#else
169# define expect(expr,value) (expr) 327# define expect(expr,value) (expr)
170# define inline static 328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif
171#endif 332#endif
172 333
173#define expect_false(expr) expect ((expr) != 0, 0) 334#define expect_false(expr) expect ((expr) != 0, 0)
174#define expect_true(expr) expect ((expr) != 0, 1) 335#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline
337
338#if EV_MINIMAL
339# define inline_speed static noinline
340#else
341# define inline_speed static inline
342#endif
175 343
176#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
177#define ABSPRI(w) ((w)->priority - EV_MINPRI) 345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
178 346
179#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 347#define EMPTY /* required for microsofts broken pseudo-c compiler */
180#define EMPTY2(a,b) /* used to suppress some warnings */ 348#define EMPTY2(a,b) /* used to suppress some warnings */
181 349
182typedef struct ev_watcher *W; 350typedef ev_watcher *W;
183typedef struct ev_watcher_list *WL; 351typedef ev_watcher_list *WL;
184typedef struct ev_watcher_time *WT; 352typedef ev_watcher_time *WT;
185 353
354#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at
356
357#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
186static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
361#endif
187 362
188#ifdef _WIN32 363#ifdef _WIN32
189# include "ev_win32.c" 364# include "ev_win32.c"
190#endif 365#endif
191 366
192/*****************************************************************************/ 367/*****************************************************************************/
193 368
194static void (*syserr_cb)(const char *msg); 369static void (*syserr_cb)(const char *msg);
195 370
371void
196void ev_set_syserr_cb (void (*cb)(const char *msg)) 372ev_set_syserr_cb (void (*cb)(const char *msg))
197{ 373{
198 syserr_cb = cb; 374 syserr_cb = cb;
199} 375}
200 376
201static void 377static void noinline
202syserr (const char *msg) 378syserr (const char *msg)
203{ 379{
204 if (!msg) 380 if (!msg)
205 msg = "(libev) system error"; 381 msg = "(libev) system error";
206 382
… …
211 perror (msg); 387 perror (msg);
212 abort (); 388 abort ();
213 } 389 }
214} 390}
215 391
392static void *
393ev_realloc_emul (void *ptr, long size)
394{
395 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and
397 * the single unix specification, so work around them here.
398 */
399
400 if (size)
401 return realloc (ptr, size);
402
403 free (ptr);
404 return 0;
405}
406
216static void *(*alloc)(void *ptr, long size); 407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
217 408
409void
218void ev_set_allocator (void *(*cb)(void *ptr, long size)) 410ev_set_allocator (void *(*cb)(void *ptr, long size))
219{ 411{
220 alloc = cb; 412 alloc = cb;
221} 413}
222 414
223static void * 415inline_speed void *
224ev_realloc (void *ptr, long size) 416ev_realloc (void *ptr, long size)
225{ 417{
226 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 418 ptr = alloc (ptr, size);
227 419
228 if (!ptr && size) 420 if (!ptr && size)
229 { 421 {
230 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
231 abort (); 423 abort ();
… …
252typedef struct 444typedef struct
253{ 445{
254 W w; 446 W w;
255 int events; 447 int events;
256} ANPENDING; 448} ANPENDING;
449
450#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */
452typedef struct
453{
454 WL head;
455} ANFS;
456#endif
457
458/* Heap Entry */
459#if EV_HEAP_CACHE_AT
460 typedef struct {
461 ev_tstamp at;
462 WT w;
463 } ANHE;
464
465 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else
469 typedef WT ANHE;
470
471 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he)
474#endif
257 475
258#if EV_MULTIPLICITY 476#if EV_MULTIPLICITY
259 477
260 struct ev_loop 478 struct ev_loop
261 { 479 {
… …
295 gettimeofday (&tv, 0); 513 gettimeofday (&tv, 0);
296 return tv.tv_sec + tv.tv_usec * 1e-6; 514 return tv.tv_sec + tv.tv_usec * 1e-6;
297#endif 515#endif
298} 516}
299 517
300inline ev_tstamp 518ev_tstamp inline_size
301get_clock (void) 519get_clock (void)
302{ 520{
303#if EV_USE_MONOTONIC 521#if EV_USE_MONOTONIC
304 if (expect_true (have_monotonic)) 522 if (expect_true (have_monotonic))
305 { 523 {
… …
318{ 536{
319 return ev_rt_now; 537 return ev_rt_now;
320} 538}
321#endif 539#endif
322 540
323#define array_roundsize(type,n) (((n) | 4) & ~3) 541void
542ev_sleep (ev_tstamp delay)
543{
544 if (delay > 0.)
545 {
546#if EV_USE_NANOSLEEP
547 struct timespec ts;
548
549 ts.tv_sec = (time_t)delay;
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0);
553#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3));
555#else
556 struct timeval tv;
557
558 tv.tv_sec = (time_t)delay;
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560
561 select (0, 0, 0, 0, &tv);
562#endif
563 }
564}
565
566/*****************************************************************************/
567
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569
570int inline_size
571array_nextsize (int elem, int cur, int cnt)
572{
573 int ncur = cur + 1;
574
575 do
576 ncur <<= 1;
577 while (cnt > ncur);
578
579 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
580 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
581 {
582 ncur *= elem;
583 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
584 ncur = ncur - sizeof (void *) * 4;
585 ncur /= elem;
586 }
587
588 return ncur;
589}
590
591static noinline void *
592array_realloc (int elem, void *base, int *cur, int cnt)
593{
594 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur);
596}
324 597
325#define array_needsize(type,base,cur,cnt,init) \ 598#define array_needsize(type,base,cur,cnt,init) \
326 if (expect_false ((cnt) > cur)) \ 599 if (expect_false ((cnt) > (cur))) \
327 { \ 600 { \
328 int newcnt = cur; \ 601 int ocur_ = (cur); \
329 do \ 602 (base) = (type *)array_realloc \
330 { \ 603 (sizeof (type), (base), &(cur), (cnt)); \
331 newcnt = array_roundsize (type, newcnt << 1); \ 604 init ((base) + (ocur_), (cur) - ocur_); \
332 } \
333 while ((cnt) > newcnt); \
334 \
335 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
336 init (base + cur, newcnt - cur); \
337 cur = newcnt; \
338 } 605 }
339 606
607#if 0
340#define array_slim(type,stem) \ 608#define array_slim(type,stem) \
341 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 609 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
342 { \ 610 { \
343 stem ## max = array_roundsize (stem ## cnt >> 1); \ 611 stem ## max = array_roundsize (stem ## cnt >> 1); \
344 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 612 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
345 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
346 } 614 }
615#endif
347 616
348#define array_free(stem, idx) \ 617#define array_free(stem, idx) \
349 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
350 619
351/*****************************************************************************/ 620/*****************************************************************************/
352 621
353static void 622void noinline
623ev_feed_event (EV_P_ void *w, int revents)
624{
625 W w_ = (W)w;
626 int pri = ABSPRI (w_);
627
628 if (expect_false (w_->pending))
629 pendings [pri][w_->pending - 1].events |= revents;
630 else
631 {
632 w_->pending = ++pendingcnt [pri];
633 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
634 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents;
636 }
637}
638
639void inline_speed
640queue_events (EV_P_ W *events, int eventcnt, int type)
641{
642 int i;
643
644 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type);
646}
647
648/*****************************************************************************/
649
650void inline_size
354anfds_init (ANFD *base, int count) 651anfds_init (ANFD *base, int count)
355{ 652{
356 while (count--) 653 while (count--)
357 { 654 {
358 base->head = 0; 655 base->head = 0;
… …
361 658
362 ++base; 659 ++base;
363 } 660 }
364} 661}
365 662
366void 663void inline_speed
367ev_feed_event (EV_P_ void *w, int revents)
368{
369 W w_ = (W)w;
370
371 if (w_->pending)
372 {
373 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
374 return;
375 }
376
377 w_->pending = ++pendingcnt [ABSPRI (w_)];
378 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
379 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
380 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
381}
382
383static void
384queue_events (EV_P_ W *events, int eventcnt, int type)
385{
386 int i;
387
388 for (i = 0; i < eventcnt; ++i)
389 ev_feed_event (EV_A_ events [i], type);
390}
391
392inline void
393fd_event (EV_P_ int fd, int revents) 664fd_event (EV_P_ int fd, int revents)
394{ 665{
395 ANFD *anfd = anfds + fd; 666 ANFD *anfd = anfds + fd;
396 struct ev_io *w; 667 ev_io *w;
397 668
398 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
399 { 670 {
400 int ev = w->events & revents; 671 int ev = w->events & revents;
401 672
402 if (ev) 673 if (ev)
403 ev_feed_event (EV_A_ (W)w, ev); 674 ev_feed_event (EV_A_ (W)w, ev);
… …
405} 676}
406 677
407void 678void
408ev_feed_fd_event (EV_P_ int fd, int revents) 679ev_feed_fd_event (EV_P_ int fd, int revents)
409{ 680{
681 if (fd >= 0 && fd < anfdmax)
410 fd_event (EV_A_ fd, revents); 682 fd_event (EV_A_ fd, revents);
411} 683}
412 684
413/*****************************************************************************/ 685void inline_size
414
415static void
416fd_reify (EV_P) 686fd_reify (EV_P)
417{ 687{
418 int i; 688 int i;
419 689
420 for (i = 0; i < fdchangecnt; ++i) 690 for (i = 0; i < fdchangecnt; ++i)
421 { 691 {
422 int fd = fdchanges [i]; 692 int fd = fdchanges [i];
423 ANFD *anfd = anfds + fd; 693 ANFD *anfd = anfds + fd;
424 struct ev_io *w; 694 ev_io *w;
425 695
426 int events = 0; 696 unsigned char events = 0;
427 697
428 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
429 events |= w->events; 699 events |= (unsigned char)w->events;
430 700
431#if EV_SELECT_IS_WINSOCKET 701#if EV_SELECT_IS_WINSOCKET
432 if (events) 702 if (events)
433 { 703 {
434 unsigned long argp; 704 unsigned long argp;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
435 anfd->handle = _get_osfhandle (fd); 708 anfd->handle = _get_osfhandle (fd);
709 #endif
436 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
437 } 711 }
438#endif 712#endif
439 713
714 {
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
440 anfd->reify = 0; 718 anfd->reify = 0;
441
442 method_modify (EV_A_ fd, anfd->events, events);
443 anfd->events = events; 719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events);
723 }
444 } 724 }
445 725
446 fdchangecnt = 0; 726 fdchangecnt = 0;
447} 727}
448 728
449static void 729void inline_size
450fd_change (EV_P_ int fd) 730fd_change (EV_P_ int fd, int flags)
451{ 731{
452 if (anfds [fd].reify) 732 unsigned char reify = anfds [fd].reify;
453 return;
454
455 anfds [fd].reify = 1; 733 anfds [fd].reify |= flags;
456 734
735 if (expect_true (!reify))
736 {
457 ++fdchangecnt; 737 ++fdchangecnt;
458 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
459 fdchanges [fdchangecnt - 1] = fd; 739 fdchanges [fdchangecnt - 1] = fd;
740 }
460} 741}
461 742
462static void 743void inline_speed
463fd_kill (EV_P_ int fd) 744fd_kill (EV_P_ int fd)
464{ 745{
465 struct ev_io *w; 746 ev_io *w;
466 747
467 while ((w = (struct ev_io *)anfds [fd].head)) 748 while ((w = (ev_io *)anfds [fd].head))
468 { 749 {
469 ev_io_stop (EV_A_ w); 750 ev_io_stop (EV_A_ w);
470 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
471 } 752 }
472} 753}
473 754
474static int 755int inline_size
475fd_valid (int fd) 756fd_valid (int fd)
476{ 757{
477#ifdef _WIN32 758#ifdef _WIN32
478 return _get_osfhandle (fd) != -1; 759 return _get_osfhandle (fd) != -1;
479#else 760#else
480 return fcntl (fd, F_GETFD) != -1; 761 return fcntl (fd, F_GETFD) != -1;
481#endif 762#endif
482} 763}
483 764
484/* called on EBADF to verify fds */ 765/* called on EBADF to verify fds */
485static void 766static void noinline
486fd_ebadf (EV_P) 767fd_ebadf (EV_P)
487{ 768{
488 int fd; 769 int fd;
489 770
490 for (fd = 0; fd < anfdmax; ++fd) 771 for (fd = 0; fd < anfdmax; ++fd)
… …
492 if (!fd_valid (fd) == -1 && errno == EBADF) 773 if (!fd_valid (fd) == -1 && errno == EBADF)
493 fd_kill (EV_A_ fd); 774 fd_kill (EV_A_ fd);
494} 775}
495 776
496/* called on ENOMEM in select/poll to kill some fds and retry */ 777/* called on ENOMEM in select/poll to kill some fds and retry */
497static void 778static void noinline
498fd_enomem (EV_P) 779fd_enomem (EV_P)
499{ 780{
500 int fd; 781 int fd;
501 782
502 for (fd = anfdmax; fd--; ) 783 for (fd = anfdmax; fd--; )
… …
505 fd_kill (EV_A_ fd); 786 fd_kill (EV_A_ fd);
506 return; 787 return;
507 } 788 }
508} 789}
509 790
510/* usually called after fork if method needs to re-arm all fds from scratch */ 791/* usually called after fork if backend needs to re-arm all fds from scratch */
511static void 792static void noinline
512fd_rearm_all (EV_P) 793fd_rearm_all (EV_P)
513{ 794{
514 int fd; 795 int fd;
515 796
516 /* this should be highly optimised to not do anything but set a flag */
517 for (fd = 0; fd < anfdmax; ++fd) 797 for (fd = 0; fd < anfdmax; ++fd)
518 if (anfds [fd].events) 798 if (anfds [fd].events)
519 { 799 {
520 anfds [fd].events = 0; 800 anfds [fd].events = 0;
521 fd_change (EV_A_ fd); 801 fd_change (EV_A_ fd, EV_IOFDSET | 1);
522 } 802 }
523} 803}
524 804
525/*****************************************************************************/ 805/*****************************************************************************/
526 806
527static void 807/*
528upheap (WT *heap, int k) 808 * the heap functions want a real array index. array index 0 uis guaranteed to not
529{ 809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
530 WT w = heap [k]; 810 * the branching factor of the d-tree.
811 */
531 812
532 while (k && heap [k >> 1]->at > w->at) 813/*
533 { 814 * at the moment we allow libev the luxury of two heaps,
534 heap [k] = heap [k >> 1]; 815 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
535 ((W)heap [k])->active = k + 1; 816 * which is more cache-efficient.
536 k >>= 1; 817 * the difference is about 5% with 50000+ watchers.
537 } 818 */
819#if EV_USE_4HEAP
538 820
539 heap [k] = w; 821#define DHEAP 4
540 ((W)heap [k])->active = k + 1; 822#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k))
541 825
542} 826/* away from the root */
543 827void inline_speed
544static void
545downheap (WT *heap, int N, int k) 828downheap (ANHE *heap, int N, int k)
546{ 829{
547 WT w = heap [k]; 830 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0;
548 832
549 while (k < (N >> 1)) 833 for (;;)
550 { 834 {
551 int j = k << 1; 835 ev_tstamp minat;
836 ANHE *minpos;
837 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
552 838
553 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 839 /* find minimum child */
840 if (expect_true (pos + DHEAP - 1 < E))
554 ++j; 841 {
555 842 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
556 if (w->at <= heap [j]->at) 843 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
846 }
847 else if (pos < E)
848 {
849 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
850 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
851 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
852 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
853 }
854 else
557 break; 855 break;
558 856
857 if (ANHE_at (he) <= minat)
858 break;
859
860 heap [k] = *minpos;
861 ev_active (ANHE_w (*minpos)) = k;
862
863 k = minpos - heap;
864 }
865
866 heap [k] = he;
867 ev_active (ANHE_w (he)) = k;
868}
869
870#else /* 4HEAP */
871
872#define HEAP0 1
873#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p))
875
876/* away from the root */
877void inline_speed
878downheap (ANHE *heap, int N, int k)
879{
880 ANHE he = heap [k];
881
882 for (;;)
883 {
884 int c = k << 1;
885
886 if (c > N + HEAP0 - 1)
887 break;
888
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0;
891
892 if (ANHE_at (he) <= ANHE_at (heap [c]))
893 break;
894
559 heap [k] = heap [j]; 895 heap [k] = heap [c];
560 ((W)heap [k])->active = k + 1; 896 ev_active (ANHE_w (heap [k])) = k;
897
561 k = j; 898 k = c;
562 } 899 }
563 900
564 heap [k] = w; 901 heap [k] = he;
565 ((W)heap [k])->active = k + 1; 902 ev_active (ANHE_w (he)) = k;
566} 903}
904#endif
567 905
568inline void 906/* towards the root */
907void inline_speed
908upheap (ANHE *heap, int k)
909{
910 ANHE he = heap [k];
911
912 for (;;)
913 {
914 int p = HPARENT (k);
915
916 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
917 break;
918
919 heap [k] = heap [p];
920 ev_active (ANHE_w (heap [k])) = k;
921 k = p;
922 }
923
924 heap [k] = he;
925 ev_active (ANHE_w (he)) = k;
926}
927
928void inline_size
569adjustheap (WT *heap, int N, int k) 929adjustheap (ANHE *heap, int N, int k)
570{ 930{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
571 upheap (heap, k); 932 upheap (heap, k);
933 else
572 downheap (heap, N, k); 934 downheap (heap, N, k);
935}
936
937/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size
939reheap (ANHE *heap, int N)
940{
941 int i;
942
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0);
573} 947}
574 948
575/*****************************************************************************/ 949/*****************************************************************************/
576 950
577typedef struct 951typedef struct
578{ 952{
579 WL head; 953 WL head;
580 sig_atomic_t volatile gotsig; 954 EV_ATOMIC_T gotsig;
581} ANSIG; 955} ANSIG;
582 956
583static ANSIG *signals; 957static ANSIG *signals;
584static int signalmax; 958static int signalmax;
585 959
586static int sigpipe [2]; 960static EV_ATOMIC_T gotsig;
587static sig_atomic_t volatile gotsig;
588static struct ev_io sigev;
589 961
590static void 962void inline_size
591signals_init (ANSIG *base, int count) 963signals_init (ANSIG *base, int count)
592{ 964{
593 while (count--) 965 while (count--)
594 { 966 {
595 base->head = 0; 967 base->head = 0;
… …
597 969
598 ++base; 970 ++base;
599 } 971 }
600} 972}
601 973
602static void 974/*****************************************************************************/
603sighandler (int signum)
604{
605#if _WIN32
606 signal (signum, sighandler);
607#endif
608 975
609 signals [signum - 1].gotsig = 1; 976void inline_speed
610
611 if (!gotsig)
612 {
613 int old_errno = errno;
614 gotsig = 1;
615 write (sigpipe [1], &signum, 1);
616 errno = old_errno;
617 }
618}
619
620void
621ev_feed_signal_event (EV_P_ int signum)
622{
623 WL w;
624
625#if EV_MULTIPLICITY
626 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
627#endif
628
629 --signum;
630
631 if (signum < 0 || signum >= signalmax)
632 return;
633
634 signals [signum].gotsig = 0;
635
636 for (w = signals [signum].head; w; w = w->next)
637 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
638}
639
640static void
641sigcb (EV_P_ struct ev_io *iow, int revents)
642{
643 int signum;
644
645 read (sigpipe [0], &revents, 1);
646 gotsig = 0;
647
648 for (signum = signalmax; signum--; )
649 if (signals [signum].gotsig)
650 ev_feed_signal_event (EV_A_ signum + 1);
651}
652
653inline void
654fd_intern (int fd) 977fd_intern (int fd)
655{ 978{
656#ifdef _WIN32 979#ifdef _WIN32
657 int arg = 1; 980 int arg = 1;
658 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
660 fcntl (fd, F_SETFD, FD_CLOEXEC); 983 fcntl (fd, F_SETFD, FD_CLOEXEC);
661 fcntl (fd, F_SETFL, O_NONBLOCK); 984 fcntl (fd, F_SETFL, O_NONBLOCK);
662#endif 985#endif
663} 986}
664 987
988static void noinline
989evpipe_init (EV_P)
990{
991 if (!ev_is_active (&pipeev))
992 {
993#if EV_USE_EVENTFD
994 if ((evfd = eventfd (0, 0)) >= 0)
995 {
996 evpipe [0] = -1;
997 fd_intern (evfd);
998 ev_io_set (&pipeev, evfd, EV_READ);
999 }
1000 else
1001#endif
1002 {
1003 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe");
1005
1006 fd_intern (evpipe [0]);
1007 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ);
1009 }
1010
1011 ev_io_start (EV_A_ &pipeev);
1012 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 }
1014}
1015
1016void inline_size
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{
1019 if (!*flag)
1020 {
1021 int old_errno = errno; /* save errno because write might clobber it */
1022
1023 *flag = 1;
1024
1025#if EV_USE_EVENTFD
1026 if (evfd >= 0)
1027 {
1028 uint64_t counter = 1;
1029 write (evfd, &counter, sizeof (uint64_t));
1030 }
1031 else
1032#endif
1033 write (evpipe [1], &old_errno, 1);
1034
1035 errno = old_errno;
1036 }
1037}
1038
665static void 1039static void
666siginit (EV_P) 1040pipecb (EV_P_ ev_io *iow, int revents)
667{ 1041{
668 fd_intern (sigpipe [0]); 1042#if EV_USE_EVENTFD
669 fd_intern (sigpipe [1]); 1043 if (evfd >= 0)
1044 {
1045 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t));
1047 }
1048 else
1049#endif
1050 {
1051 char dummy;
1052 read (evpipe [0], &dummy, 1);
1053 }
670 1054
671 ev_io_set (&sigev, sigpipe [0], EV_READ); 1055 if (gotsig && ev_is_default_loop (EV_A))
672 ev_io_start (EV_A_ &sigev); 1056 {
673 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1057 int signum;
1058 gotsig = 0;
1059
1060 for (signum = signalmax; signum--; )
1061 if (signals [signum].gotsig)
1062 ev_feed_signal_event (EV_A_ signum + 1);
1063 }
1064
1065#if EV_ASYNC_ENABLE
1066 if (gotasync)
1067 {
1068 int i;
1069 gotasync = 0;
1070
1071 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent)
1073 {
1074 asyncs [i]->sent = 0;
1075 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1076 }
1077 }
1078#endif
674} 1079}
675 1080
676/*****************************************************************************/ 1081/*****************************************************************************/
677 1082
678static struct ev_child *childs [PID_HASHSIZE]; 1083static void
1084ev_sighandler (int signum)
1085{
1086#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct;
1088#endif
1089
1090#if _WIN32
1091 signal (signum, ev_sighandler);
1092#endif
1093
1094 signals [signum - 1].gotsig = 1;
1095 evpipe_write (EV_A_ &gotsig);
1096}
1097
1098void noinline
1099ev_feed_signal_event (EV_P_ int signum)
1100{
1101 WL w;
1102
1103#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1105#endif
1106
1107 --signum;
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return;
1111
1112 signals [signum].gotsig = 0;
1113
1114 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116}
1117
1118/*****************************************************************************/
1119
1120static WL childs [EV_PID_HASHSIZE];
679 1121
680#ifndef _WIN32 1122#ifndef _WIN32
681 1123
682static struct ev_signal childev; 1124static ev_signal childev;
1125
1126#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0
1128#endif
1129
1130void inline_speed
1131child_reap (EV_P_ int chain, int pid, int status)
1132{
1133 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135
1136 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1137 {
1138 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1)))
1140 {
1141 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1142 w->rpid = pid;
1143 w->rstatus = status;
1144 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1145 }
1146 }
1147}
683 1148
684#ifndef WCONTINUED 1149#ifndef WCONTINUED
685# define WCONTINUED 0 1150# define WCONTINUED 0
686#endif 1151#endif
687 1152
688static void 1153static void
689child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
690{
691 struct ev_child *w;
692
693 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
694 if (w->pid == pid || !w->pid)
695 {
696 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
697 w->rpid = pid;
698 w->rstatus = status;
699 ev_feed_event (EV_A_ (W)w, EV_CHILD);
700 }
701}
702
703static void
704childcb (EV_P_ struct ev_signal *sw, int revents) 1154childcb (EV_P_ ev_signal *sw, int revents)
705{ 1155{
706 int pid, status; 1156 int pid, status;
707 1157
1158 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
708 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1159 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
709 { 1160 if (!WCONTINUED
1161 || errno != EINVAL
1162 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1163 return;
1164
710 /* make sure we are called again until all childs have been reaped */ 1165 /* make sure we are called again until all children have been reaped */
1166 /* we need to do it this way so that the callback gets called before we continue */
711 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
712 1168
713 child_reap (EV_A_ sw, pid, pid, status); 1169 child_reap (EV_A_ pid, pid, status);
1170 if (EV_PID_HASHSIZE > 1)
714 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1171 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
715 }
716} 1172}
717 1173
718#endif 1174#endif
719 1175
720/*****************************************************************************/ 1176/*****************************************************************************/
… …
746{ 1202{
747 return EV_VERSION_MINOR; 1203 return EV_VERSION_MINOR;
748} 1204}
749 1205
750/* return true if we are running with elevated privileges and should ignore env variables */ 1206/* return true if we are running with elevated privileges and should ignore env variables */
751static int 1207int inline_size
752enable_secure (void) 1208enable_secure (void)
753{ 1209{
754#ifdef _WIN32 1210#ifdef _WIN32
755 return 0; 1211 return 0;
756#else 1212#else
… …
758 || getgid () != getegid (); 1214 || getgid () != getegid ();
759#endif 1215#endif
760} 1216}
761 1217
762unsigned int 1218unsigned int
763ev_method (EV_P) 1219ev_supported_backends (void)
764{ 1220{
765 return method; 1221 unsigned int flags = 0;
766}
767 1222
768static void 1223 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1224 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1225 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1226 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1227 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1228
1229 return flags;
1230}
1231
1232unsigned int
1233ev_recommended_backends (void)
1234{
1235 unsigned int flags = ev_supported_backends ();
1236
1237#ifndef __NetBSD__
1238 /* kqueue is borked on everything but netbsd apparently */
1239 /* it usually doesn't work correctly on anything but sockets and pipes */
1240 flags &= ~EVBACKEND_KQUEUE;
1241#endif
1242#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation
1244 flags &= ~EVBACKEND_POLL;
1245#endif
1246
1247 return flags;
1248}
1249
1250unsigned int
1251ev_embeddable_backends (void)
1252{
1253 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1254
1255 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1256 /* please fix it and tell me how to detect the fix */
1257 flags &= ~EVBACKEND_EPOLL;
1258
1259 return flags;
1260}
1261
1262unsigned int
1263ev_backend (EV_P)
1264{
1265 return backend;
1266}
1267
1268unsigned int
1269ev_loop_count (EV_P)
1270{
1271 return loop_count;
1272}
1273
1274void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{
1277 io_blocktime = interval;
1278}
1279
1280void
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{
1283 timeout_blocktime = interval;
1284}
1285
1286static void noinline
769loop_init (EV_P_ unsigned int flags) 1287loop_init (EV_P_ unsigned int flags)
770{ 1288{
771 if (!method) 1289 if (!backend)
772 { 1290 {
773#if EV_USE_MONOTONIC 1291#if EV_USE_MONOTONIC
774 { 1292 {
775 struct timespec ts; 1293 struct timespec ts;
776 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
777 have_monotonic = 1; 1295 have_monotonic = 1;
778 } 1296 }
779#endif 1297#endif
780 1298
781 ev_rt_now = ev_time (); 1299 ev_rt_now = ev_time ();
782 mn_now = get_clock (); 1300 mn_now = get_clock ();
783 now_floor = mn_now; 1301 now_floor = mn_now;
784 rtmn_diff = ev_rt_now - mn_now; 1302 rtmn_diff = ev_rt_now - mn_now;
785 1303
786 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1304 io_blocktime = 0.;
1305 timeout_blocktime = 0.;
1306 backend = 0;
1307 backend_fd = -1;
1308 gotasync = 0;
1309#if EV_USE_INOTIFY
1310 fs_fd = -2;
1311#endif
1312
1313 /* pid check not overridable via env */
1314#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK)
1316 curpid = getpid ();
1317#endif
1318
1319 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS"))
787 flags = atoi (getenv ("LIBEV_FLAGS")); 1322 flags = atoi (getenv ("LIBEV_FLAGS"));
788 1323
789 if (!(flags & 0x0000ffff)) 1324 if (!(flags & 0x0000ffffU))
790 flags |= 0x0000ffff; 1325 flags |= ev_recommended_backends ();
791 1326
792 method = 0;
793#if EV_USE_PORT 1327#if EV_USE_PORT
794 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1328 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
795#endif 1329#endif
796#if EV_USE_KQUEUE 1330#if EV_USE_KQUEUE
797 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1331 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
798#endif 1332#endif
799#if EV_USE_EPOLL 1333#if EV_USE_EPOLL
800 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1334 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
801#endif 1335#endif
802#if EV_USE_POLL 1336#if EV_USE_POLL
803 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1337 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
804#endif 1338#endif
805#if EV_USE_SELECT 1339#if EV_USE_SELECT
806 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
807#endif 1341#endif
808 1342
809 ev_init (&sigev, sigcb); 1343 ev_init (&pipeev, pipecb);
810 ev_set_priority (&sigev, EV_MAXPRI); 1344 ev_set_priority (&pipeev, EV_MAXPRI);
811 } 1345 }
812} 1346}
813 1347
814void 1348static void noinline
815loop_destroy (EV_P) 1349loop_destroy (EV_P)
816{ 1350{
817 int i; 1351 int i;
818 1352
1353 if (ev_is_active (&pipeev))
1354 {
1355 ev_ref (EV_A); /* signal watcher */
1356 ev_io_stop (EV_A_ &pipeev);
1357
1358#if EV_USE_EVENTFD
1359 if (evfd >= 0)
1360 close (evfd);
1361#endif
1362
1363 if (evpipe [0] >= 0)
1364 {
1365 close (evpipe [0]);
1366 close (evpipe [1]);
1367 }
1368 }
1369
1370#if EV_USE_INOTIFY
1371 if (fs_fd >= 0)
1372 close (fs_fd);
1373#endif
1374
1375 if (backend_fd >= 0)
1376 close (backend_fd);
1377
819#if EV_USE_PORT 1378#if EV_USE_PORT
820 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
821#endif 1380#endif
822#if EV_USE_KQUEUE 1381#if EV_USE_KQUEUE
823 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
824#endif 1383#endif
825#if EV_USE_EPOLL 1384#if EV_USE_EPOLL
826 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1385 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
827#endif 1386#endif
828#if EV_USE_POLL 1387#if EV_USE_POLL
829 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1388 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
830#endif 1389#endif
831#if EV_USE_SELECT 1390#if EV_USE_SELECT
832 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1391 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
833#endif 1392#endif
834 1393
835 for (i = NUMPRI; i--; ) 1394 for (i = NUMPRI; i--; )
1395 {
836 array_free (pending, [i]); 1396 array_free (pending, [i]);
1397#if EV_IDLE_ENABLE
1398 array_free (idle, [i]);
1399#endif
1400 }
1401
1402 ev_free (anfds); anfdmax = 0;
837 1403
838 /* have to use the microsoft-never-gets-it-right macro */ 1404 /* have to use the microsoft-never-gets-it-right macro */
839 array_free (fdchange, EMPTY0); 1405 array_free (fdchange, EMPTY);
840 array_free (timer, EMPTY0); 1406 array_free (timer, EMPTY);
841#if EV_PERIODICS 1407#if EV_PERIODIC_ENABLE
842 array_free (periodic, EMPTY0); 1408 array_free (periodic, EMPTY);
843#endif 1409#endif
1410#if EV_FORK_ENABLE
844 array_free (idle, EMPTY0); 1411 array_free (fork, EMPTY);
1412#endif
845 array_free (prepare, EMPTY0); 1413 array_free (prepare, EMPTY);
846 array_free (check, EMPTY0); 1414 array_free (check, EMPTY);
1415#if EV_ASYNC_ENABLE
1416 array_free (async, EMPTY);
1417#endif
847 1418
848 method = 0; 1419 backend = 0;
849} 1420}
850 1421
851static void 1422#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P);
1424#endif
1425
1426void inline_size
852loop_fork (EV_P) 1427loop_fork (EV_P)
853{ 1428{
854#if EV_USE_PORT 1429#if EV_USE_PORT
855 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
856#endif 1431#endif
857#if EV_USE_KQUEUE 1432#if EV_USE_KQUEUE
858 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1433 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
859#endif 1434#endif
860#if EV_USE_EPOLL 1435#if EV_USE_EPOLL
861 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1436 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
862#endif 1437#endif
1438#if EV_USE_INOTIFY
1439 infy_fork (EV_A);
1440#endif
863 1441
864 if (ev_is_active (&sigev)) 1442 if (ev_is_active (&pipeev))
865 { 1443 {
866 /* default loop */ 1444 /* this "locks" the handlers against writing to the pipe */
1445 /* while we modify the fd vars */
1446 gotsig = 1;
1447#if EV_ASYNC_ENABLE
1448 gotasync = 1;
1449#endif
867 1450
868 ev_ref (EV_A); 1451 ev_ref (EV_A);
869 ev_io_stop (EV_A_ &sigev); 1452 ev_io_stop (EV_A_ &pipeev);
1453
1454#if EV_USE_EVENTFD
1455 if (evfd >= 0)
1456 close (evfd);
1457#endif
1458
1459 if (evpipe [0] >= 0)
1460 {
870 close (sigpipe [0]); 1461 close (evpipe [0]);
871 close (sigpipe [1]); 1462 close (evpipe [1]);
1463 }
872 1464
873 while (pipe (sigpipe))
874 syserr ("(libev) error creating pipe");
875
876 siginit (EV_A); 1465 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ);
877 } 1468 }
878 1469
879 postfork = 0; 1470 postfork = 0;
880} 1471}
1472
1473#if EV_MULTIPLICITY
1474
1475struct ev_loop *
1476ev_loop_new (unsigned int flags)
1477{
1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1479
1480 memset (loop, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags);
1483
1484 if (ev_backend (EV_A))
1485 return loop;
1486
1487 return 0;
1488}
1489
1490void
1491ev_loop_destroy (EV_P)
1492{
1493 loop_destroy (EV_A);
1494 ev_free (loop);
1495}
1496
1497void
1498ev_loop_fork (EV_P)
1499{
1500 postfork = 1; /* must be in line with ev_default_fork */
1501}
1502
1503#if EV_VERIFY
1504void noinline
1505verify_watcher (EV_P_ W w)
1506{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508
1509 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511}
1512
1513static void noinline
1514verify_heap (EV_P_ ANHE *heap, int N)
1515{
1516 int i;
1517
1518 for (i = HEAP0; i < N + HEAP0; ++i)
1519 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 }
1526}
1527
1528static void noinline
1529array_verify (EV_P_ W *ws, int cnt)
1530{
1531 while (cnt--)
1532 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]);
1535 }
1536}
1537#endif
1538
1539void
1540ev_loop_verify (EV_P)
1541{
1542#if EV_VERIFY
1543 int i;
1544 WL w;
1545
1546 assert (activecnt >= -1);
1547
1548 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1551
1552 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next)
1555 {
1556 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 }
1560
1561 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt);
1563
1564#if EV_PERIODIC_ENABLE
1565 assert (periodicmax >= periodiccnt);
1566 verify_heap (EV_A_ periodics, periodiccnt);
1567#endif
1568
1569 for (i = NUMPRI; i--; )
1570 {
1571 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE
1573 assert (idlemax [i] >= idlecnt [i]);
1574 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575#endif
1576 }
1577
1578#if EV_FORK_ENABLE
1579 assert (forkmax >= forkcnt);
1580 array_verify (EV_A_ (W *)forks, forkcnt);
1581#endif
1582
1583#if EV_ASYNC_ENABLE
1584 assert (asyncmax >= asynccnt);
1585 array_verify (EV_A_ (W *)asyncs, asynccnt);
1586#endif
1587
1588 assert (preparemax >= preparecnt);
1589 array_verify (EV_A_ (W *)prepares, preparecnt);
1590
1591 assert (checkmax >= checkcnt);
1592 array_verify (EV_A_ (W *)checks, checkcnt);
1593
1594# if 0
1595 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1596 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1597# endif
1598#endif
1599}
1600
1601#endif /* multiplicity */
881 1602
882#if EV_MULTIPLICITY 1603#if EV_MULTIPLICITY
883struct ev_loop * 1604struct ev_loop *
884ev_loop_new (unsigned int flags)
885{
886 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
887
888 memset (loop, 0, sizeof (struct ev_loop));
889
890 loop_init (EV_A_ flags);
891
892 if (ev_method (EV_A))
893 return loop;
894
895 return 0;
896}
897
898void
899ev_loop_destroy (EV_P)
900{
901 loop_destroy (EV_A);
902 ev_free (loop);
903}
904
905void
906ev_loop_fork (EV_P)
907{
908 postfork = 1;
909}
910
911#endif
912
913#if EV_MULTIPLICITY
914struct ev_loop *
915ev_default_loop_ (unsigned int flags) 1605ev_default_loop_init (unsigned int flags)
916#else 1606#else
917int 1607int
918ev_default_loop (unsigned int flags) 1608ev_default_loop (unsigned int flags)
919#endif 1609#endif
920{ 1610{
921 if (sigpipe [0] == sigpipe [1])
922 if (pipe (sigpipe))
923 return 0;
924
925 if (!ev_default_loop_ptr) 1611 if (!ev_default_loop_ptr)
926 { 1612 {
927#if EV_MULTIPLICITY 1613#if EV_MULTIPLICITY
928 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1614 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
929#else 1615#else
930 ev_default_loop_ptr = 1; 1616 ev_default_loop_ptr = 1;
931#endif 1617#endif
932 1618
933 loop_init (EV_A_ flags); 1619 loop_init (EV_A_ flags);
934 1620
935 if (ev_method (EV_A)) 1621 if (ev_backend (EV_A))
936 { 1622 {
937 siginit (EV_A);
938
939#ifndef _WIN32 1623#ifndef _WIN32
940 ev_signal_init (&childev, childcb, SIGCHLD); 1624 ev_signal_init (&childev, childcb, SIGCHLD);
941 ev_set_priority (&childev, EV_MAXPRI); 1625 ev_set_priority (&childev, EV_MAXPRI);
942 ev_signal_start (EV_A_ &childev); 1626 ev_signal_start (EV_A_ &childev);
943 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1627 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
960#ifndef _WIN32 1644#ifndef _WIN32
961 ev_ref (EV_A); /* child watcher */ 1645 ev_ref (EV_A); /* child watcher */
962 ev_signal_stop (EV_A_ &childev); 1646 ev_signal_stop (EV_A_ &childev);
963#endif 1647#endif
964 1648
965 ev_ref (EV_A); /* signal watcher */
966 ev_io_stop (EV_A_ &sigev);
967
968 close (sigpipe [0]); sigpipe [0] = 0;
969 close (sigpipe [1]); sigpipe [1] = 0;
970
971 loop_destroy (EV_A); 1649 loop_destroy (EV_A);
972} 1650}
973 1651
974void 1652void
975ev_default_fork (void) 1653ev_default_fork (void)
976{ 1654{
977#if EV_MULTIPLICITY 1655#if EV_MULTIPLICITY
978 struct ev_loop *loop = ev_default_loop_ptr; 1656 struct ev_loop *loop = ev_default_loop_ptr;
979#endif 1657#endif
980 1658
981 if (method) 1659 if (backend)
982 postfork = 1; 1660 postfork = 1; /* must be in line with ev_loop_fork */
983} 1661}
984 1662
985/*****************************************************************************/ 1663/*****************************************************************************/
986 1664
987static int 1665void
988any_pending (EV_P) 1666ev_invoke (EV_P_ void *w, int revents)
989{ 1667{
990 int pri; 1668 EV_CB_INVOKE ((W)w, revents);
991
992 for (pri = NUMPRI; pri--; )
993 if (pendingcnt [pri])
994 return 1;
995
996 return 0;
997} 1669}
998 1670
999static void 1671void inline_speed
1000call_pending (EV_P) 1672call_pending (EV_P)
1001{ 1673{
1002 int pri; 1674 int pri;
1003 1675
1004 for (pri = NUMPRI; pri--; ) 1676 for (pri = NUMPRI; pri--; )
1005 while (pendingcnt [pri]) 1677 while (pendingcnt [pri])
1006 { 1678 {
1007 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1679 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1008 1680
1009 if (p->w) 1681 if (expect_true (p->w))
1010 { 1682 {
1683 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1684
1011 p->w->pending = 0; 1685 p->w->pending = 0;
1012 EV_CB_INVOKE (p->w, p->events); 1686 EV_CB_INVOKE (p->w, p->events);
1687 EV_FREQUENT_CHECK;
1013 } 1688 }
1014 } 1689 }
1015} 1690}
1016 1691
1017static void 1692#if EV_IDLE_ENABLE
1693void inline_size
1694idle_reify (EV_P)
1695{
1696 if (expect_false (idleall))
1697 {
1698 int pri;
1699
1700 for (pri = NUMPRI; pri--; )
1701 {
1702 if (pendingcnt [pri])
1703 break;
1704
1705 if (idlecnt [pri])
1706 {
1707 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1708 break;
1709 }
1710 }
1711 }
1712}
1713#endif
1714
1715void inline_size
1018timers_reify (EV_P) 1716timers_reify (EV_P)
1019{ 1717{
1718 EV_FREQUENT_CHECK;
1719
1020 while (timercnt && ((WT)timers [0])->at <= mn_now) 1720 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1021 { 1721 {
1022 struct ev_timer *w = timers [0]; 1722 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1023 1723
1024 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1724 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1025 1725
1026 /* first reschedule or stop timer */ 1726 /* first reschedule or stop timer */
1027 if (w->repeat) 1727 if (w->repeat)
1028 { 1728 {
1729 ev_at (w) += w->repeat;
1730 if (ev_at (w) < mn_now)
1731 ev_at (w) = mn_now;
1732
1029 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1733 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1030 1734
1031 ((WT)w)->at += w->repeat; 1735 ANHE_at_cache (timers [HEAP0]);
1032 if (((WT)w)->at < mn_now)
1033 ((WT)w)->at = mn_now;
1034
1035 downheap ((WT *)timers, timercnt, 0); 1736 downheap (timers, timercnt, HEAP0);
1036 } 1737 }
1037 else 1738 else
1038 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1739 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1039 1740
1741 EV_FREQUENT_CHECK;
1040 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1742 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1041 } 1743 }
1042} 1744}
1043 1745
1044#if EV_PERIODICS 1746#if EV_PERIODIC_ENABLE
1045static void 1747void inline_size
1046periodics_reify (EV_P) 1748periodics_reify (EV_P)
1047{ 1749{
1750 EV_FREQUENT_CHECK;
1751
1048 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1752 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1049 { 1753 {
1050 struct ev_periodic *w = periodics [0]; 1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1051 1755
1052 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1756 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1053 1757
1054 /* first reschedule or stop timer */ 1758 /* first reschedule or stop timer */
1055 if (w->reschedule_cb) 1759 if (w->reschedule_cb)
1056 { 1760 {
1057 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1761 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762
1058 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1763 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764
1765 ANHE_at_cache (periodics [HEAP0]);
1059 downheap ((WT *)periodics, periodiccnt, 0); 1766 downheap (periodics, periodiccnt, HEAP0);
1060 } 1767 }
1061 else if (w->interval) 1768 else if (w->interval)
1062 { 1769 {
1063 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1770 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1064 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1771 /* if next trigger time is not sufficiently in the future, put it there */
1772 /* this might happen because of floating point inexactness */
1773 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774 {
1775 ev_at (w) += w->interval;
1776
1777 /* if interval is unreasonably low we might still have a time in the past */
1778 /* so correct this. this will make the periodic very inexact, but the user */
1779 /* has effectively asked to get triggered more often than possible */
1780 if (ev_at (w) < ev_rt_now)
1781 ev_at (w) = ev_rt_now;
1782 }
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1065 downheap ((WT *)periodics, periodiccnt, 0); 1785 downheap (periodics, periodiccnt, HEAP0);
1066 } 1786 }
1067 else 1787 else
1068 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1788 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1069 1789
1790 EV_FREQUENT_CHECK;
1070 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1791 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1071 } 1792 }
1072} 1793}
1073 1794
1074static void 1795static void noinline
1075periodics_reschedule (EV_P) 1796periodics_reschedule (EV_P)
1076{ 1797{
1077 int i; 1798 int i;
1078 1799
1079 /* adjust periodics after time jump */ 1800 /* adjust periodics after time jump */
1080 for (i = 0; i < periodiccnt; ++i) 1801 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1081 { 1802 {
1082 struct ev_periodic *w = periodics [i]; 1803 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1083 1804
1084 if (w->reschedule_cb) 1805 if (w->reschedule_cb)
1085 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1806 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1086 else if (w->interval) 1807 else if (w->interval)
1087 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1808 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1809
1810 ANHE_at_cache (periodics [i]);
1811 }
1812
1813 reheap (periodics, periodiccnt);
1814}
1815#endif
1816
1817void inline_speed
1818time_update (EV_P_ ev_tstamp max_block)
1819{
1820 int i;
1821
1822#if EV_USE_MONOTONIC
1823 if (expect_true (have_monotonic))
1088 } 1824 {
1825 ev_tstamp odiff = rtmn_diff;
1089 1826
1090 /* now rebuild the heap */
1091 for (i = periodiccnt >> 1; i--; )
1092 downheap ((WT *)periodics, periodiccnt, i);
1093}
1094#endif
1095
1096inline int
1097time_update_monotonic (EV_P)
1098{
1099 mn_now = get_clock (); 1827 mn_now = get_clock ();
1100 1828
1829 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1830 /* interpolate in the meantime */
1101 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1831 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1102 { 1832 {
1103 ev_rt_now = rtmn_diff + mn_now; 1833 ev_rt_now = rtmn_diff + mn_now;
1104 return 0; 1834 return;
1105 } 1835 }
1106 else 1836
1107 {
1108 now_floor = mn_now; 1837 now_floor = mn_now;
1109 ev_rt_now = ev_time (); 1838 ev_rt_now = ev_time ();
1110 return 1;
1111 }
1112}
1113 1839
1114static void 1840 /* loop a few times, before making important decisions.
1115time_update (EV_P) 1841 * on the choice of "4": one iteration isn't enough,
1116{ 1842 * in case we get preempted during the calls to
1117 int i; 1843 * ev_time and get_clock. a second call is almost guaranteed
1118 1844 * to succeed in that case, though. and looping a few more times
1119#if EV_USE_MONOTONIC 1845 * doesn't hurt either as we only do this on time-jumps or
1120 if (expect_true (have_monotonic)) 1846 * in the unlikely event of having been preempted here.
1121 { 1847 */
1122 if (time_update_monotonic (EV_A)) 1848 for (i = 4; --i; )
1123 { 1849 {
1124 ev_tstamp odiff = rtmn_diff; 1850 rtmn_diff = ev_rt_now - mn_now;
1125 1851
1126 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1852 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1853 return; /* all is well */
1854
1855 ev_rt_now = ev_time ();
1856 mn_now = get_clock ();
1857 now_floor = mn_now;
1858 }
1859
1860# if EV_PERIODIC_ENABLE
1861 periodics_reschedule (EV_A);
1862# endif
1863 /* no timer adjustment, as the monotonic clock doesn't jump */
1864 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865 }
1866 else
1867#endif
1868 {
1869 ev_rt_now = ev_time ();
1870
1871 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872 {
1873#if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A);
1875#endif
1876 /* adjust timers. this is easy, as the offset is the same for all of them */
1877 for (i = 0; i < timercnt; ++i)
1127 { 1878 {
1128 rtmn_diff = ev_rt_now - mn_now; 1879 ANHE *he = timers + i + HEAP0;
1129 1880 ANHE_w (*he)->at += ev_rt_now - mn_now;
1130 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1881 ANHE_at_cache (*he);
1131 return; /* all is well */
1132
1133 ev_rt_now = ev_time ();
1134 mn_now = get_clock ();
1135 now_floor = mn_now;
1136 } 1882 }
1137
1138# if EV_PERIODICS
1139 periodics_reschedule (EV_A);
1140# endif
1141 /* no timer adjustment, as the monotonic clock doesn't jump */
1142 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1143 } 1883 }
1144 }
1145 else
1146#endif
1147 {
1148 ev_rt_now = ev_time ();
1149
1150 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1151 {
1152#if EV_PERIODICS
1153 periodics_reschedule (EV_A);
1154#endif
1155
1156 /* adjust timers. this is easy, as the offset is the same for all */
1157 for (i = 0; i < timercnt; ++i)
1158 ((WT)timers [i])->at += ev_rt_now - mn_now;
1159 }
1160 1884
1161 mn_now = ev_rt_now; 1885 mn_now = ev_rt_now;
1162 } 1886 }
1163} 1887}
1164 1888
… …
1177static int loop_done; 1901static int loop_done;
1178 1902
1179void 1903void
1180ev_loop (EV_P_ int flags) 1904ev_loop (EV_P_ int flags)
1181{ 1905{
1182 double block; 1906 loop_done = EVUNLOOP_CANCEL;
1183 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1184 1907
1185 while (activecnt) 1908 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1909
1910 do
1186 { 1911 {
1912#if EV_VERIFY >= 2
1913 ev_loop_verify (EV_A);
1914#endif
1915
1916#ifndef _WIN32
1917 if (expect_false (curpid)) /* penalise the forking check even more */
1918 if (expect_false (getpid () != curpid))
1919 {
1920 curpid = getpid ();
1921 postfork = 1;
1922 }
1923#endif
1924
1925#if EV_FORK_ENABLE
1926 /* we might have forked, so queue fork handlers */
1927 if (expect_false (postfork))
1928 if (forkcnt)
1929 {
1930 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931 call_pending (EV_A);
1932 }
1933#endif
1934
1187 /* queue check watchers (and execute them) */ 1935 /* queue prepare watchers (and execute them) */
1188 if (expect_false (preparecnt)) 1936 if (expect_false (preparecnt))
1189 { 1937 {
1190 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1191 call_pending (EV_A); 1939 call_pending (EV_A);
1192 } 1940 }
1193 1941
1942 if (expect_false (!activecnt))
1943 break;
1944
1194 /* we might have forked, so reify kernel state if necessary */ 1945 /* we might have forked, so reify kernel state if necessary */
1195 if (expect_false (postfork)) 1946 if (expect_false (postfork))
1196 loop_fork (EV_A); 1947 loop_fork (EV_A);
1197 1948
1198 /* update fd-related kernel structures */ 1949 /* update fd-related kernel structures */
1199 fd_reify (EV_A); 1950 fd_reify (EV_A);
1200 1951
1201 /* calculate blocking time */ 1952 /* calculate blocking time */
1953 {
1954 ev_tstamp waittime = 0.;
1955 ev_tstamp sleeptime = 0.;
1202 1956
1203 /* we only need this for !monotonic clock or timers, but as we basically 1957 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1204 always have timers, we just calculate it always */
1205#if EV_USE_MONOTONIC
1206 if (expect_true (have_monotonic))
1207 time_update_monotonic (EV_A);
1208 else
1209#endif
1210 { 1958 {
1211 ev_rt_now = ev_time (); 1959 /* update time to cancel out callback processing overhead */
1212 mn_now = ev_rt_now; 1960 time_update (EV_A_ 1e100);
1213 }
1214 1961
1215 if (flags & EVLOOP_NONBLOCK || idlecnt)
1216 block = 0.;
1217 else
1218 {
1219 block = MAX_BLOCKTIME; 1962 waittime = MAX_BLOCKTIME;
1220 1963
1221 if (timercnt) 1964 if (timercnt)
1222 { 1965 {
1223 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1966 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1224 if (block > to) block = to; 1967 if (waittime > to) waittime = to;
1225 } 1968 }
1226 1969
1227#if EV_PERIODICS 1970#if EV_PERIODIC_ENABLE
1228 if (periodiccnt) 1971 if (periodiccnt)
1229 { 1972 {
1230 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1973 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1231 if (block > to) block = to; 1974 if (waittime > to) waittime = to;
1232 } 1975 }
1233#endif 1976#endif
1234 1977
1235 if (block < 0.) block = 0.; 1978 if (expect_false (waittime < timeout_blocktime))
1979 waittime = timeout_blocktime;
1980
1981 sleeptime = waittime - backend_fudge;
1982
1983 if (expect_true (sleeptime > io_blocktime))
1984 sleeptime = io_blocktime;
1985
1986 if (sleeptime)
1987 {
1988 ev_sleep (sleeptime);
1989 waittime -= sleeptime;
1990 }
1236 } 1991 }
1237 1992
1238 method_poll (EV_A_ block); 1993 ++loop_count;
1994 backend_poll (EV_A_ waittime);
1239 1995
1240 /* update ev_rt_now, do magic */ 1996 /* update ev_rt_now, do magic */
1241 time_update (EV_A); 1997 time_update (EV_A_ waittime + sleeptime);
1998 }
1242 1999
1243 /* queue pending timers and reschedule them */ 2000 /* queue pending timers and reschedule them */
1244 timers_reify (EV_A); /* relative timers called last */ 2001 timers_reify (EV_A); /* relative timers called last */
1245#if EV_PERIODICS 2002#if EV_PERIODIC_ENABLE
1246 periodics_reify (EV_A); /* absolute timers called first */ 2003 periodics_reify (EV_A); /* absolute timers called first */
1247#endif 2004#endif
1248 2005
2006#if EV_IDLE_ENABLE
1249 /* queue idle watchers unless io or timers are pending */ 2007 /* queue idle watchers unless other events are pending */
1250 if (idlecnt && !any_pending (EV_A)) 2008 idle_reify (EV_A);
1251 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2009#endif
1252 2010
1253 /* queue check watchers, to be executed first */ 2011 /* queue check watchers, to be executed first */
1254 if (checkcnt) 2012 if (expect_false (checkcnt))
1255 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2013 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1256 2014
1257 call_pending (EV_A); 2015 call_pending (EV_A);
1258
1259 if (loop_done)
1260 break;
1261 } 2016 }
2017 while (expect_true (
2018 activecnt
2019 && !loop_done
2020 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2021 ));
1262 2022
1263 if (loop_done != 2) 2023 if (loop_done == EVUNLOOP_ONE)
1264 loop_done = 0; 2024 loop_done = EVUNLOOP_CANCEL;
1265} 2025}
1266 2026
1267void 2027void
1268ev_unloop (EV_P_ int how) 2028ev_unloop (EV_P_ int how)
1269{ 2029{
1270 loop_done = how; 2030 loop_done = how;
1271} 2031}
1272 2032
1273/*****************************************************************************/ 2033/*****************************************************************************/
1274 2034
1275inline void 2035void inline_size
1276wlist_add (WL *head, WL elem) 2036wlist_add (WL *head, WL elem)
1277{ 2037{
1278 elem->next = *head; 2038 elem->next = *head;
1279 *head = elem; 2039 *head = elem;
1280} 2040}
1281 2041
1282inline void 2042void inline_size
1283wlist_del (WL *head, WL elem) 2043wlist_del (WL *head, WL elem)
1284{ 2044{
1285 while (*head) 2045 while (*head)
1286 { 2046 {
1287 if (*head == elem) 2047 if (*head == elem)
… …
1292 2052
1293 head = &(*head)->next; 2053 head = &(*head)->next;
1294 } 2054 }
1295} 2055}
1296 2056
1297inline void 2057void inline_speed
1298ev_clear_pending (EV_P_ W w) 2058clear_pending (EV_P_ W w)
1299{ 2059{
1300 if (w->pending) 2060 if (w->pending)
1301 { 2061 {
1302 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2062 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1303 w->pending = 0; 2063 w->pending = 0;
1304 } 2064 }
1305} 2065}
1306 2066
1307inline void 2067int
2068ev_clear_pending (EV_P_ void *w)
2069{
2070 W w_ = (W)w;
2071 int pending = w_->pending;
2072
2073 if (expect_true (pending))
2074 {
2075 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2076 w_->pending = 0;
2077 p->w = 0;
2078 return p->events;
2079 }
2080 else
2081 return 0;
2082}
2083
2084void inline_size
2085pri_adjust (EV_P_ W w)
2086{
2087 int pri = w->priority;
2088 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090 w->priority = pri;
2091}
2092
2093void inline_speed
1308ev_start (EV_P_ W w, int active) 2094ev_start (EV_P_ W w, int active)
1309{ 2095{
1310 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2096 pri_adjust (EV_A_ w);
1311 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1312
1313 w->active = active; 2097 w->active = active;
1314 ev_ref (EV_A); 2098 ev_ref (EV_A);
1315} 2099}
1316 2100
1317inline void 2101void inline_size
1318ev_stop (EV_P_ W w) 2102ev_stop (EV_P_ W w)
1319{ 2103{
1320 ev_unref (EV_A); 2104 ev_unref (EV_A);
1321 w->active = 0; 2105 w->active = 0;
1322} 2106}
1323 2107
1324/*****************************************************************************/ 2108/*****************************************************************************/
1325 2109
1326void 2110void noinline
1327ev_io_start (EV_P_ struct ev_io *w) 2111ev_io_start (EV_P_ ev_io *w)
1328{ 2112{
1329 int fd = w->fd; 2113 int fd = w->fd;
1330 2114
1331 if (ev_is_active (w)) 2115 if (expect_false (ev_is_active (w)))
1332 return; 2116 return;
1333 2117
1334 assert (("ev_io_start called with negative fd", fd >= 0)); 2118 assert (("ev_io_start called with negative fd", fd >= 0));
2119
2120 EV_FREQUENT_CHECK;
1335 2121
1336 ev_start (EV_A_ (W)w, 1); 2122 ev_start (EV_A_ (W)w, 1);
1337 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2123 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1338 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2124 wlist_add (&anfds[fd].head, (WL)w);
1339 2125
1340 fd_change (EV_A_ fd); 2126 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1341} 2127 w->events &= ~EV_IOFDSET;
1342 2128
1343void 2129 EV_FREQUENT_CHECK;
2130}
2131
2132void noinline
1344ev_io_stop (EV_P_ struct ev_io *w) 2133ev_io_stop (EV_P_ ev_io *w)
1345{ 2134{
1346 ev_clear_pending (EV_A_ (W)w); 2135 clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w)) 2136 if (expect_false (!ev_is_active (w)))
1348 return; 2137 return;
1349 2138
1350 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2139 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1351 2140
2141 EV_FREQUENT_CHECK;
2142
1352 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2143 wlist_del (&anfds[w->fd].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 2144 ev_stop (EV_A_ (W)w);
1354 2145
1355 fd_change (EV_A_ w->fd); 2146 fd_change (EV_A_ w->fd, 1);
1356}
1357 2147
1358void 2148 EV_FREQUENT_CHECK;
2149}
2150
2151void noinline
1359ev_timer_start (EV_P_ struct ev_timer *w) 2152ev_timer_start (EV_P_ ev_timer *w)
1360{ 2153{
1361 if (ev_is_active (w)) 2154 if (expect_false (ev_is_active (w)))
1362 return; 2155 return;
1363 2156
1364 ((WT)w)->at += mn_now; 2157 ev_at (w) += mn_now;
1365 2158
1366 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2159 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1367 2160
2161 EV_FREQUENT_CHECK;
2162
2163 ++timercnt;
1368 ev_start (EV_A_ (W)w, ++timercnt); 2164 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1369 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 2165 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1370 timers [timercnt - 1] = w; 2166 ANHE_w (timers [ev_active (w)]) = (WT)w;
1371 upheap ((WT *)timers, timercnt - 1); 2167 ANHE_at_cache (timers [ev_active (w)]);
2168 upheap (timers, ev_active (w));
1372 2169
2170 EV_FREQUENT_CHECK;
2171
1373 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2172 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1374} 2173}
1375 2174
1376void 2175void noinline
1377ev_timer_stop (EV_P_ struct ev_timer *w) 2176ev_timer_stop (EV_P_ ev_timer *w)
1378{ 2177{
1379 ev_clear_pending (EV_A_ (W)w); 2178 clear_pending (EV_A_ (W)w);
1380 if (!ev_is_active (w)) 2179 if (expect_false (!ev_is_active (w)))
1381 return; 2180 return;
1382 2181
2182 EV_FREQUENT_CHECK;
2183
2184 {
2185 int active = ev_active (w);
2186
1383 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2187 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1384 2188
1385 if (((W)w)->active < timercnt--) 2189 --timercnt;
2190
2191 if (expect_true (active < timercnt + HEAP0))
1386 { 2192 {
1387 timers [((W)w)->active - 1] = timers [timercnt]; 2193 timers [active] = timers [timercnt + HEAP0];
1388 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2194 adjustheap (timers, timercnt, active);
1389 } 2195 }
2196 }
1390 2197
1391 ((WT)w)->at -= mn_now; 2198 EV_FREQUENT_CHECK;
2199
2200 ev_at (w) -= mn_now;
1392 2201
1393 ev_stop (EV_A_ (W)w); 2202 ev_stop (EV_A_ (W)w);
1394} 2203}
1395 2204
1396void 2205void noinline
1397ev_timer_again (EV_P_ struct ev_timer *w) 2206ev_timer_again (EV_P_ ev_timer *w)
1398{ 2207{
2208 EV_FREQUENT_CHECK;
2209
1399 if (ev_is_active (w)) 2210 if (ev_is_active (w))
1400 { 2211 {
1401 if (w->repeat) 2212 if (w->repeat)
1402 { 2213 {
1403 ((WT)w)->at = mn_now + w->repeat; 2214 ev_at (w) = mn_now + w->repeat;
2215 ANHE_at_cache (timers [ev_active (w)]);
1404 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2216 adjustheap (timers, timercnt, ev_active (w));
1405 } 2217 }
1406 else 2218 else
1407 ev_timer_stop (EV_A_ w); 2219 ev_timer_stop (EV_A_ w);
1408 } 2220 }
1409 else if (w->repeat) 2221 else if (w->repeat)
1410 { 2222 {
1411 w->at = w->repeat; 2223 ev_at (w) = w->repeat;
1412 ev_timer_start (EV_A_ w); 2224 ev_timer_start (EV_A_ w);
1413 } 2225 }
1414}
1415 2226
2227 EV_FREQUENT_CHECK;
2228}
2229
1416#if EV_PERIODICS 2230#if EV_PERIODIC_ENABLE
1417void 2231void noinline
1418ev_periodic_start (EV_P_ struct ev_periodic *w) 2232ev_periodic_start (EV_P_ ev_periodic *w)
1419{ 2233{
1420 if (ev_is_active (w)) 2234 if (expect_false (ev_is_active (w)))
1421 return; 2235 return;
1422 2236
1423 if (w->reschedule_cb) 2237 if (w->reschedule_cb)
1424 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2238 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1425 else if (w->interval) 2239 else if (w->interval)
1426 { 2240 {
1427 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2241 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1428 /* this formula differs from the one in periodic_reify because we do not always round up */ 2242 /* this formula differs from the one in periodic_reify because we do not always round up */
1429 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2243 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1430 } 2244 }
2245 else
2246 ev_at (w) = w->offset;
1431 2247
2248 EV_FREQUENT_CHECK;
2249
2250 ++periodiccnt;
1432 ev_start (EV_A_ (W)w, ++periodiccnt); 2251 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1433 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2252 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1434 periodics [periodiccnt - 1] = w; 2253 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1435 upheap ((WT *)periodics, periodiccnt - 1); 2254 ANHE_at_cache (periodics [ev_active (w)]);
2255 upheap (periodics, ev_active (w));
1436 2256
2257 EV_FREQUENT_CHECK;
2258
1437 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2259 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1438} 2260}
1439 2261
1440void 2262void noinline
1441ev_periodic_stop (EV_P_ struct ev_periodic *w) 2263ev_periodic_stop (EV_P_ ev_periodic *w)
1442{ 2264{
1443 ev_clear_pending (EV_A_ (W)w); 2265 clear_pending (EV_A_ (W)w);
1444 if (!ev_is_active (w)) 2266 if (expect_false (!ev_is_active (w)))
1445 return; 2267 return;
1446 2268
2269 EV_FREQUENT_CHECK;
2270
2271 {
2272 int active = ev_active (w);
2273
1447 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2274 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1448 2275
1449 if (((W)w)->active < periodiccnt--) 2276 --periodiccnt;
2277
2278 if (expect_true (active < periodiccnt + HEAP0))
1450 { 2279 {
1451 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2280 periodics [active] = periodics [periodiccnt + HEAP0];
1452 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2281 adjustheap (periodics, periodiccnt, active);
1453 } 2282 }
2283 }
2284
2285 EV_FREQUENT_CHECK;
1454 2286
1455 ev_stop (EV_A_ (W)w); 2287 ev_stop (EV_A_ (W)w);
1456} 2288}
1457 2289
1458void 2290void noinline
1459ev_periodic_again (EV_P_ struct ev_periodic *w) 2291ev_periodic_again (EV_P_ ev_periodic *w)
1460{ 2292{
1461 /* TODO: use adjustheap and recalculation */ 2293 /* TODO: use adjustheap and recalculation */
1462 ev_periodic_stop (EV_A_ w); 2294 ev_periodic_stop (EV_A_ w);
1463 ev_periodic_start (EV_A_ w); 2295 ev_periodic_start (EV_A_ w);
1464} 2296}
1465#endif 2297#endif
1466 2298
1467void
1468ev_idle_start (EV_P_ struct ev_idle *w)
1469{
1470 if (ev_is_active (w))
1471 return;
1472
1473 ev_start (EV_A_ (W)w, ++idlecnt);
1474 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1475 idles [idlecnt - 1] = w;
1476}
1477
1478void
1479ev_idle_stop (EV_P_ struct ev_idle *w)
1480{
1481 ev_clear_pending (EV_A_ (W)w);
1482 if (!ev_is_active (w))
1483 return;
1484
1485 idles [((W)w)->active - 1] = idles [--idlecnt];
1486 ev_stop (EV_A_ (W)w);
1487}
1488
1489void
1490ev_prepare_start (EV_P_ struct ev_prepare *w)
1491{
1492 if (ev_is_active (w))
1493 return;
1494
1495 ev_start (EV_A_ (W)w, ++preparecnt);
1496 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1497 prepares [preparecnt - 1] = w;
1498}
1499
1500void
1501ev_prepare_stop (EV_P_ struct ev_prepare *w)
1502{
1503 ev_clear_pending (EV_A_ (W)w);
1504 if (!ev_is_active (w))
1505 return;
1506
1507 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1508 ev_stop (EV_A_ (W)w);
1509}
1510
1511void
1512ev_check_start (EV_P_ struct ev_check *w)
1513{
1514 if (ev_is_active (w))
1515 return;
1516
1517 ev_start (EV_A_ (W)w, ++checkcnt);
1518 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1519 checks [checkcnt - 1] = w;
1520}
1521
1522void
1523ev_check_stop (EV_P_ struct ev_check *w)
1524{
1525 ev_clear_pending (EV_A_ (W)w);
1526 if (!ev_is_active (w))
1527 return;
1528
1529 checks [((W)w)->active - 1] = checks [--checkcnt];
1530 ev_stop (EV_A_ (W)w);
1531}
1532
1533#ifndef SA_RESTART 2299#ifndef SA_RESTART
1534# define SA_RESTART 0 2300# define SA_RESTART 0
1535#endif 2301#endif
1536 2302
1537void 2303void noinline
1538ev_signal_start (EV_P_ struct ev_signal *w) 2304ev_signal_start (EV_P_ ev_signal *w)
1539{ 2305{
1540#if EV_MULTIPLICITY 2306#if EV_MULTIPLICITY
1541 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2307 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542#endif 2308#endif
1543 if (ev_is_active (w)) 2309 if (expect_false (ev_is_active (w)))
1544 return; 2310 return;
1545 2311
1546 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2312 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1547 2313
2314 evpipe_init (EV_A);
2315
2316 EV_FREQUENT_CHECK;
2317
2318 {
2319#ifndef _WIN32
2320 sigset_t full, prev;
2321 sigfillset (&full);
2322 sigprocmask (SIG_SETMASK, &full, &prev);
2323#endif
2324
2325 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2326
2327#ifndef _WIN32
2328 sigprocmask (SIG_SETMASK, &prev, 0);
2329#endif
2330 }
2331
1548 ev_start (EV_A_ (W)w, 1); 2332 ev_start (EV_A_ (W)w, 1);
1549 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1550 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2333 wlist_add (&signals [w->signum - 1].head, (WL)w);
1551 2334
1552 if (!((WL)w)->next) 2335 if (!((WL)w)->next)
1553 { 2336 {
1554#if _WIN32 2337#if _WIN32
1555 signal (w->signum, sighandler); 2338 signal (w->signum, ev_sighandler);
1556#else 2339#else
1557 struct sigaction sa; 2340 struct sigaction sa;
1558 sa.sa_handler = sighandler; 2341 sa.sa_handler = ev_sighandler;
1559 sigfillset (&sa.sa_mask); 2342 sigfillset (&sa.sa_mask);
1560 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2343 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1561 sigaction (w->signum, &sa, 0); 2344 sigaction (w->signum, &sa, 0);
1562#endif 2345#endif
1563 } 2346 }
1564}
1565 2347
1566void 2348 EV_FREQUENT_CHECK;
2349}
2350
2351void noinline
1567ev_signal_stop (EV_P_ struct ev_signal *w) 2352ev_signal_stop (EV_P_ ev_signal *w)
1568{ 2353{
1569 ev_clear_pending (EV_A_ (W)w); 2354 clear_pending (EV_A_ (W)w);
1570 if (!ev_is_active (w)) 2355 if (expect_false (!ev_is_active (w)))
1571 return; 2356 return;
1572 2357
2358 EV_FREQUENT_CHECK;
2359
1573 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2360 wlist_del (&signals [w->signum - 1].head, (WL)w);
1574 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
1575 2362
1576 if (!signals [w->signum - 1].head) 2363 if (!signals [w->signum - 1].head)
1577 signal (w->signum, SIG_DFL); 2364 signal (w->signum, SIG_DFL);
1578}
1579 2365
2366 EV_FREQUENT_CHECK;
2367}
2368
1580void 2369void
1581ev_child_start (EV_P_ struct ev_child *w) 2370ev_child_start (EV_P_ ev_child *w)
1582{ 2371{
1583#if EV_MULTIPLICITY 2372#if EV_MULTIPLICITY
1584 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2373 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1585#endif 2374#endif
1586 if (ev_is_active (w)) 2375 if (expect_false (ev_is_active (w)))
1587 return; 2376 return;
1588 2377
2378 EV_FREQUENT_CHECK;
2379
1589 ev_start (EV_A_ (W)w, 1); 2380 ev_start (EV_A_ (W)w, 1);
1590 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2381 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1591}
1592 2382
2383 EV_FREQUENT_CHECK;
2384}
2385
1593void 2386void
1594ev_child_stop (EV_P_ struct ev_child *w) 2387ev_child_stop (EV_P_ ev_child *w)
1595{ 2388{
1596 ev_clear_pending (EV_A_ (W)w); 2389 clear_pending (EV_A_ (W)w);
1597 if (!ev_is_active (w)) 2390 if (expect_false (!ev_is_active (w)))
1598 return; 2391 return;
1599 2392
2393 EV_FREQUENT_CHECK;
2394
1600 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2395 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1601 ev_stop (EV_A_ (W)w); 2396 ev_stop (EV_A_ (W)w);
2397
2398 EV_FREQUENT_CHECK;
1602} 2399}
2400
2401#if EV_STAT_ENABLE
2402
2403# ifdef _WIN32
2404# undef lstat
2405# define lstat(a,b) _stati64 (a,b)
2406# endif
2407
2408#define DEF_STAT_INTERVAL 5.0074891
2409#define MIN_STAT_INTERVAL 0.1074891
2410
2411static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412
2413#if EV_USE_INOTIFY
2414# define EV_INOTIFY_BUFSIZE 8192
2415
2416static void noinline
2417infy_add (EV_P_ ev_stat *w)
2418{
2419 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);
2420
2421 if (w->wd < 0)
2422 {
2423 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2424
2425 /* monitor some parent directory for speedup hints */
2426 /* note that exceeding the hardcoded limit is not a correctness issue, */
2427 /* but an efficiency issue only */
2428 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429 {
2430 char path [4096];
2431 strcpy (path, w->path);
2432
2433 do
2434 {
2435 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437
2438 char *pend = strrchr (path, '/');
2439
2440 if (!pend)
2441 break; /* whoops, no '/', complain to your admin */
2442
2443 *pend = 0;
2444 w->wd = inotify_add_watch (fs_fd, path, mask);
2445 }
2446 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447 }
2448 }
2449 else
2450 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451
2452 if (w->wd >= 0)
2453 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2454}
2455
2456static void noinline
2457infy_del (EV_P_ ev_stat *w)
2458{
2459 int slot;
2460 int wd = w->wd;
2461
2462 if (wd < 0)
2463 return;
2464
2465 w->wd = -2;
2466 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2467 wlist_del (&fs_hash [slot].head, (WL)w);
2468
2469 /* remove this watcher, if others are watching it, they will rearm */
2470 inotify_rm_watch (fs_fd, wd);
2471}
2472
2473static void noinline
2474infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475{
2476 if (slot < 0)
2477 /* overflow, need to check for all hahs slots */
2478 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2479 infy_wd (EV_A_ slot, wd, ev);
2480 else
2481 {
2482 WL w_;
2483
2484 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2485 {
2486 ev_stat *w = (ev_stat *)w_;
2487 w_ = w_->next; /* lets us remove this watcher and all before it */
2488
2489 if (w->wd == wd || wd == -1)
2490 {
2491 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492 {
2493 w->wd = -1;
2494 infy_add (EV_A_ w); /* re-add, no matter what */
2495 }
2496
2497 stat_timer_cb (EV_A_ &w->timer, 0);
2498 }
2499 }
2500 }
2501}
2502
2503static void
2504infy_cb (EV_P_ ev_io *w, int revents)
2505{
2506 char buf [EV_INOTIFY_BUFSIZE];
2507 struct inotify_event *ev = (struct inotify_event *)buf;
2508 int ofs;
2509 int len = read (fs_fd, buf, sizeof (buf));
2510
2511 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2512 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2513}
2514
2515void inline_size
2516infy_init (EV_P)
2517{
2518 if (fs_fd != -2)
2519 return;
2520
2521 fs_fd = inotify_init ();
2522
2523 if (fs_fd >= 0)
2524 {
2525 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2526 ev_set_priority (&fs_w, EV_MAXPRI);
2527 ev_io_start (EV_A_ &fs_w);
2528 }
2529}
2530
2531void inline_size
2532infy_fork (EV_P)
2533{
2534 int slot;
2535
2536 if (fs_fd < 0)
2537 return;
2538
2539 close (fs_fd);
2540 fs_fd = inotify_init ();
2541
2542 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2543 {
2544 WL w_ = fs_hash [slot].head;
2545 fs_hash [slot].head = 0;
2546
2547 while (w_)
2548 {
2549 ev_stat *w = (ev_stat *)w_;
2550 w_ = w_->next; /* lets us add this watcher */
2551
2552 w->wd = -1;
2553
2554 if (fs_fd >= 0)
2555 infy_add (EV_A_ w); /* re-add, no matter what */
2556 else
2557 ev_timer_start (EV_A_ &w->timer);
2558 }
2559
2560 }
2561}
2562
2563#endif
2564
2565void
2566ev_stat_stat (EV_P_ ev_stat *w)
2567{
2568 if (lstat (w->path, &w->attr) < 0)
2569 w->attr.st_nlink = 0;
2570 else if (!w->attr.st_nlink)
2571 w->attr.st_nlink = 1;
2572}
2573
2574static void noinline
2575stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2576{
2577 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2578
2579 /* we copy this here each the time so that */
2580 /* prev has the old value when the callback gets invoked */
2581 w->prev = w->attr;
2582 ev_stat_stat (EV_A_ w);
2583
2584 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2585 if (
2586 w->prev.st_dev != w->attr.st_dev
2587 || w->prev.st_ino != w->attr.st_ino
2588 || w->prev.st_mode != w->attr.st_mode
2589 || w->prev.st_nlink != w->attr.st_nlink
2590 || w->prev.st_uid != w->attr.st_uid
2591 || w->prev.st_gid != w->attr.st_gid
2592 || w->prev.st_rdev != w->attr.st_rdev
2593 || w->prev.st_size != w->attr.st_size
2594 || w->prev.st_atime != w->attr.st_atime
2595 || w->prev.st_mtime != w->attr.st_mtime
2596 || w->prev.st_ctime != w->attr.st_ctime
2597 ) {
2598 #if EV_USE_INOTIFY
2599 infy_del (EV_A_ w);
2600 infy_add (EV_A_ w);
2601 ev_stat_stat (EV_A_ w); /* avoid race... */
2602 #endif
2603
2604 ev_feed_event (EV_A_ w, EV_STAT);
2605 }
2606}
2607
2608void
2609ev_stat_start (EV_P_ ev_stat *w)
2610{
2611 if (expect_false (ev_is_active (w)))
2612 return;
2613
2614 /* since we use memcmp, we need to clear any padding data etc. */
2615 memset (&w->prev, 0, sizeof (ev_statdata));
2616 memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618 ev_stat_stat (EV_A_ w);
2619
2620 if (w->interval < MIN_STAT_INTERVAL)
2621 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622
2623 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2624 ev_set_priority (&w->timer, ev_priority (w));
2625
2626#if EV_USE_INOTIFY
2627 infy_init (EV_A);
2628
2629 if (fs_fd >= 0)
2630 infy_add (EV_A_ w);
2631 else
2632#endif
2633 ev_timer_start (EV_A_ &w->timer);
2634
2635 ev_start (EV_A_ (W)w, 1);
2636
2637 EV_FREQUENT_CHECK;
2638}
2639
2640void
2641ev_stat_stop (EV_P_ ev_stat *w)
2642{
2643 clear_pending (EV_A_ (W)w);
2644 if (expect_false (!ev_is_active (w)))
2645 return;
2646
2647 EV_FREQUENT_CHECK;
2648
2649#if EV_USE_INOTIFY
2650 infy_del (EV_A_ w);
2651#endif
2652 ev_timer_stop (EV_A_ &w->timer);
2653
2654 ev_stop (EV_A_ (W)w);
2655
2656 EV_FREQUENT_CHECK;
2657}
2658#endif
2659
2660#if EV_IDLE_ENABLE
2661void
2662ev_idle_start (EV_P_ ev_idle *w)
2663{
2664 if (expect_false (ev_is_active (w)))
2665 return;
2666
2667 pri_adjust (EV_A_ (W)w);
2668
2669 EV_FREQUENT_CHECK;
2670
2671 {
2672 int active = ++idlecnt [ABSPRI (w)];
2673
2674 ++idleall;
2675 ev_start (EV_A_ (W)w, active);
2676
2677 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2678 idles [ABSPRI (w)][active - 1] = w;
2679 }
2680
2681 EV_FREQUENT_CHECK;
2682}
2683
2684void
2685ev_idle_stop (EV_P_ ev_idle *w)
2686{
2687 clear_pending (EV_A_ (W)w);
2688 if (expect_false (!ev_is_active (w)))
2689 return;
2690
2691 EV_FREQUENT_CHECK;
2692
2693 {
2694 int active = ev_active (w);
2695
2696 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2697 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2698
2699 ev_stop (EV_A_ (W)w);
2700 --idleall;
2701 }
2702
2703 EV_FREQUENT_CHECK;
2704}
2705#endif
2706
2707void
2708ev_prepare_start (EV_P_ ev_prepare *w)
2709{
2710 if (expect_false (ev_is_active (w)))
2711 return;
2712
2713 EV_FREQUENT_CHECK;
2714
2715 ev_start (EV_A_ (W)w, ++preparecnt);
2716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2717 prepares [preparecnt - 1] = w;
2718
2719 EV_FREQUENT_CHECK;
2720}
2721
2722void
2723ev_prepare_stop (EV_P_ ev_prepare *w)
2724{
2725 clear_pending (EV_A_ (W)w);
2726 if (expect_false (!ev_is_active (w)))
2727 return;
2728
2729 EV_FREQUENT_CHECK;
2730
2731 {
2732 int active = ev_active (w);
2733
2734 prepares [active - 1] = prepares [--preparecnt];
2735 ev_active (prepares [active - 1]) = active;
2736 }
2737
2738 ev_stop (EV_A_ (W)w);
2739
2740 EV_FREQUENT_CHECK;
2741}
2742
2743void
2744ev_check_start (EV_P_ ev_check *w)
2745{
2746 if (expect_false (ev_is_active (w)))
2747 return;
2748
2749 EV_FREQUENT_CHECK;
2750
2751 ev_start (EV_A_ (W)w, ++checkcnt);
2752 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2753 checks [checkcnt - 1] = w;
2754
2755 EV_FREQUENT_CHECK;
2756}
2757
2758void
2759ev_check_stop (EV_P_ ev_check *w)
2760{
2761 clear_pending (EV_A_ (W)w);
2762 if (expect_false (!ev_is_active (w)))
2763 return;
2764
2765 EV_FREQUENT_CHECK;
2766
2767 {
2768 int active = ev_active (w);
2769
2770 checks [active - 1] = checks [--checkcnt];
2771 ev_active (checks [active - 1]) = active;
2772 }
2773
2774 ev_stop (EV_A_ (W)w);
2775
2776 EV_FREQUENT_CHECK;
2777}
2778
2779#if EV_EMBED_ENABLE
2780void noinline
2781ev_embed_sweep (EV_P_ ev_embed *w)
2782{
2783 ev_loop (w->other, EVLOOP_NONBLOCK);
2784}
2785
2786static void
2787embed_io_cb (EV_P_ ev_io *io, int revents)
2788{
2789 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2790
2791 if (ev_cb (w))
2792 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2793 else
2794 ev_loop (w->other, EVLOOP_NONBLOCK);
2795}
2796
2797static void
2798embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2799{
2800 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2801
2802 {
2803 struct ev_loop *loop = w->other;
2804
2805 while (fdchangecnt)
2806 {
2807 fd_reify (EV_A);
2808 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2809 }
2810 }
2811}
2812
2813#if 0
2814static void
2815embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2816{
2817 ev_idle_stop (EV_A_ idle);
2818}
2819#endif
2820
2821void
2822ev_embed_start (EV_P_ ev_embed *w)
2823{
2824 if (expect_false (ev_is_active (w)))
2825 return;
2826
2827 {
2828 struct ev_loop *loop = w->other;
2829 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831 }
2832
2833 EV_FREQUENT_CHECK;
2834
2835 ev_set_priority (&w->io, ev_priority (w));
2836 ev_io_start (EV_A_ &w->io);
2837
2838 ev_prepare_init (&w->prepare, embed_prepare_cb);
2839 ev_set_priority (&w->prepare, EV_MINPRI);
2840 ev_prepare_start (EV_A_ &w->prepare);
2841
2842 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843
2844 ev_start (EV_A_ (W)w, 1);
2845
2846 EV_FREQUENT_CHECK;
2847}
2848
2849void
2850ev_embed_stop (EV_P_ ev_embed *w)
2851{
2852 clear_pending (EV_A_ (W)w);
2853 if (expect_false (!ev_is_active (w)))
2854 return;
2855
2856 EV_FREQUENT_CHECK;
2857
2858 ev_io_stop (EV_A_ &w->io);
2859 ev_prepare_stop (EV_A_ &w->prepare);
2860
2861 ev_stop (EV_A_ (W)w);
2862
2863 EV_FREQUENT_CHECK;
2864}
2865#endif
2866
2867#if EV_FORK_ENABLE
2868void
2869ev_fork_start (EV_P_ ev_fork *w)
2870{
2871 if (expect_false (ev_is_active (w)))
2872 return;
2873
2874 EV_FREQUENT_CHECK;
2875
2876 ev_start (EV_A_ (W)w, ++forkcnt);
2877 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2878 forks [forkcnt - 1] = w;
2879
2880 EV_FREQUENT_CHECK;
2881}
2882
2883void
2884ev_fork_stop (EV_P_ ev_fork *w)
2885{
2886 clear_pending (EV_A_ (W)w);
2887 if (expect_false (!ev_is_active (w)))
2888 return;
2889
2890 EV_FREQUENT_CHECK;
2891
2892 {
2893 int active = ev_active (w);
2894
2895 forks [active - 1] = forks [--forkcnt];
2896 ev_active (forks [active - 1]) = active;
2897 }
2898
2899 ev_stop (EV_A_ (W)w);
2900
2901 EV_FREQUENT_CHECK;
2902}
2903#endif
2904
2905#if EV_ASYNC_ENABLE
2906void
2907ev_async_start (EV_P_ ev_async *w)
2908{
2909 if (expect_false (ev_is_active (w)))
2910 return;
2911
2912 evpipe_init (EV_A);
2913
2914 EV_FREQUENT_CHECK;
2915
2916 ev_start (EV_A_ (W)w, ++asynccnt);
2917 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2918 asyncs [asynccnt - 1] = w;
2919
2920 EV_FREQUENT_CHECK;
2921}
2922
2923void
2924ev_async_stop (EV_P_ ev_async *w)
2925{
2926 clear_pending (EV_A_ (W)w);
2927 if (expect_false (!ev_is_active (w)))
2928 return;
2929
2930 EV_FREQUENT_CHECK;
2931
2932 {
2933 int active = ev_active (w);
2934
2935 asyncs [active - 1] = asyncs [--asynccnt];
2936 ev_active (asyncs [active - 1]) = active;
2937 }
2938
2939 ev_stop (EV_A_ (W)w);
2940
2941 EV_FREQUENT_CHECK;
2942}
2943
2944void
2945ev_async_send (EV_P_ ev_async *w)
2946{
2947 w->sent = 1;
2948 evpipe_write (EV_A_ &gotasync);
2949}
2950#endif
1603 2951
1604/*****************************************************************************/ 2952/*****************************************************************************/
1605 2953
1606struct ev_once 2954struct ev_once
1607{ 2955{
1608 struct ev_io io; 2956 ev_io io;
1609 struct ev_timer to; 2957 ev_timer to;
1610 void (*cb)(int revents, void *arg); 2958 void (*cb)(int revents, void *arg);
1611 void *arg; 2959 void *arg;
1612}; 2960};
1613 2961
1614static void 2962static void
… …
1623 2971
1624 cb (revents, arg); 2972 cb (revents, arg);
1625} 2973}
1626 2974
1627static void 2975static void
1628once_cb_io (EV_P_ struct ev_io *w, int revents) 2976once_cb_io (EV_P_ ev_io *w, int revents)
1629{ 2977{
1630 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2978 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1631} 2979}
1632 2980
1633static void 2981static void
1634once_cb_to (EV_P_ struct ev_timer *w, int revents) 2982once_cb_to (EV_P_ ev_timer *w, int revents)
1635{ 2983{
1636 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2984 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1637} 2985}
1638 2986
1639void 2987void
1640ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2988ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1641{ 2989{
1642 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2990 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1643 2991
1644 if (!once) 2992 if (expect_false (!once))
2993 {
1645 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2994 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1646 else 2995 return;
1647 { 2996 }
2997
1648 once->cb = cb; 2998 once->cb = cb;
1649 once->arg = arg; 2999 once->arg = arg;
1650 3000
1651 ev_init (&once->io, once_cb_io); 3001 ev_init (&once->io, once_cb_io);
1652 if (fd >= 0) 3002 if (fd >= 0)
1653 { 3003 {
1654 ev_io_set (&once->io, fd, events); 3004 ev_io_set (&once->io, fd, events);
1655 ev_io_start (EV_A_ &once->io); 3005 ev_io_start (EV_A_ &once->io);
1656 } 3006 }
1657 3007
1658 ev_init (&once->to, once_cb_to); 3008 ev_init (&once->to, once_cb_to);
1659 if (timeout >= 0.) 3009 if (timeout >= 0.)
1660 { 3010 {
1661 ev_timer_set (&once->to, timeout, 0.); 3011 ev_timer_set (&once->to, timeout, 0.);
1662 ev_timer_start (EV_A_ &once->to); 3012 ev_timer_start (EV_A_ &once->to);
1663 }
1664 } 3013 }
1665} 3014}
3015
3016#if EV_MULTIPLICITY
3017 #include "ev_wrap.h"
3018#endif
1666 3019
1667#ifdef __cplusplus 3020#ifdef __cplusplus
1668} 3021}
1669#endif 3022#endif
1670 3023

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