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Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */
31#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
32# include "config.h" 49# include "config.h"
50# endif
33 51
34# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
55# endif
56# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
37# endif 66# endif
38 67
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
41# endif 74# endif
42 75
43# if HAVE_POLL && HAVE_POLL_H 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
45# endif 82# endif
46 83
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
49# endif 90# endif
50 91
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
52# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
53# endif 98# endif
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
54 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
55#endif 132#endif
56 133
57#include <math.h> 134#include <math.h>
58#include <stdlib.h> 135#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 136#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 137#include <stddef.h>
63 138
64#include <stdio.h> 139#include <stdio.h>
65 140
66#include <assert.h> 141#include <assert.h>
67#include <errno.h> 142#include <errno.h>
68#include <sys/types.h> 143#include <sys/types.h>
144#include <time.h>
145
146#include <signal.h>
147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
69#ifndef WIN32 154#ifndef _WIN32
155# include <sys/time.h>
70# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
158#else
159# define WIN32_LEAN_AND_MEAN
160# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1
71#endif 163# endif
72#include <sys/time.h> 164#endif
73#include <time.h>
74 165
75/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
76 167
77#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
78# define EV_USE_MONOTONIC 1 169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
79#endif 178#endif
80 179
81#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
83#endif 182#endif
84 183
85#ifndef EV_USE_POLL 184#ifndef EV_USE_POLL
86# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
87#endif 190#endif
88 191
89#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
90# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
91#endif 198#endif
92 199
93#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
95#endif 202#endif
96 203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
97#ifndef EV_USE_WIN32 208#ifndef EV_USE_INOTIFY
98# ifdef WIN32 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
99# define EV_USE_WIN32 1 210# define EV_USE_INOTIFY 1
100# else 211# else
101# define EV_USE_WIN32 0 212# define EV_USE_INOTIFY 0
102# endif 213# endif
103#endif 214#endif
104 215
105#ifndef EV_USE_REALTIME 216#ifndef EV_PID_HASHSIZE
106# define EV_USE_REALTIME 1 217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
107#endif 221# endif
222#endif
108 223
109/**/ 224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240#if 0 /* debugging */
241# define EV_VERIFY 1
242# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1
244#endif
245
246#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL
248#endif
249
250#ifndef EV_HEAP_CACHE_AT
251# define EV_HEAP_CACHE_AT !EV_MINIMAL
252#endif
253
254/* this block fixes any misconfiguration where we know we run into trouble otherwise */
110 255
111#ifndef CLOCK_MONOTONIC 256#ifndef CLOCK_MONOTONIC
112# undef EV_USE_MONOTONIC 257# undef EV_USE_MONOTONIC
113# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
114#endif 259#endif
… …
116#ifndef CLOCK_REALTIME 261#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 262# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME 0
119#endif 264#endif
120 265
266#if !EV_STAT_ENABLE
267# undef EV_USE_INOTIFY
268# define EV_USE_INOTIFY 0
269#endif
270
271#if !EV_USE_NANOSLEEP
272# ifndef _WIN32
273# include <sys/select.h>
274# endif
275#endif
276
277#if EV_USE_INOTIFY
278# include <sys/inotify.h>
279#endif
280
281#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h>
283#endif
284
285#if EV_USE_EVENTFD
286/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287# include <stdint.h>
288# ifdef __cplusplus
289extern "C" {
290# endif
291int eventfd (unsigned int initval, int flags);
292# ifdef __cplusplus
293}
294# endif
295#endif
296
121/**/ 297/**/
122 298
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306#else
307# define EV_FREQUENT_CHECK do { } while (0)
308#endif
309
310/*
311 * This is used to avoid floating point rounding problems.
312 * It is added to ev_rt_now when scheduling periodics
313 * to ensure progress, time-wise, even when rounding
314 * errors are against us.
315 * This value is good at least till the year 4000.
316 * Better solutions welcome.
317 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
319
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 320#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 321#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127 323
128#include "ev.h"
129
130#if __GNUC__ >= 3 324#if __GNUC__ >= 4
131# define expect(expr,value) __builtin_expect ((expr),(value)) 325# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 326# define noinline __attribute__ ((noinline))
133#else 327#else
134# define expect(expr,value) (expr) 328# define expect(expr,value) (expr)
135# define inline static 329# define noinline
330# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
331# define inline
332# endif
136#endif 333#endif
137 334
138#define expect_false(expr) expect ((expr) != 0, 0) 335#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 336#define expect_true(expr) expect ((expr) != 0, 1)
337#define inline_size static inline
338
339#if EV_MINIMAL
340# define inline_speed static noinline
341#else
342# define inline_speed static inline
343#endif
140 344
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 347
348#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */
350
144typedef struct ev_watcher *W; 351typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 352typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 353typedef ev_watcher_time *WT;
147 354
355#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at
357
358#if EV_USE_MONOTONIC
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
362#endif
149 363
150#if WIN32 364#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 365# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 366#endif
155 367
156/*****************************************************************************/ 368/*****************************************************************************/
157 369
158static void (*syserr_cb)(void); 370static void (*syserr_cb)(const char *msg);
159 371
160void ev_set_syserr_cb (void (*cb)(void)) 372void
373ev_set_syserr_cb (void (*cb)(const char *msg))
161{ 374{
162 syserr_cb = cb; 375 syserr_cb = cb;
163} 376}
164 377
165static void 378static void noinline
166syserr (void) 379syserr (const char *msg)
167{ 380{
381 if (!msg)
382 msg = "(libev) system error";
383
168 if (syserr_cb) 384 if (syserr_cb)
169 syserr_cb (); 385 syserr_cb (msg);
170 else 386 else
171 { 387 {
172 perror ("libev"); 388 perror (msg);
173 abort (); 389 abort ();
174 } 390 }
175} 391}
176 392
393static void *
394ev_realloc_emul (void *ptr, long size)
395{
396 /* some systems, notably openbsd and darwin, fail to properly
397 * implement realloc (x, 0) (as required by both ansi c-98 and
398 * the single unix specification, so work around them here.
399 */
400
401 if (size)
402 return realloc (ptr, size);
403
404 free (ptr);
405 return 0;
406}
407
177static void *(*alloc)(void *ptr, long size); 408static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
178 409
410void
179void ev_set_allocator (void *(*cb)(void *ptr, long size)) 411ev_set_allocator (void *(*cb)(void *ptr, long size))
180{ 412{
181 alloc = cb; 413 alloc = cb;
182} 414}
183 415
184static void * 416inline_speed void *
185ev_realloc (void *ptr, long size) 417ev_realloc (void *ptr, long size)
186{ 418{
187 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 419 ptr = alloc (ptr, size);
188 420
189 if (!ptr && size) 421 if (!ptr && size)
190 { 422 {
191 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
192 abort (); 424 abort ();
… …
203typedef struct 435typedef struct
204{ 436{
205 WL head; 437 WL head;
206 unsigned char events; 438 unsigned char events;
207 unsigned char reify; 439 unsigned char reify;
440#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle;
442#endif
208} ANFD; 443} ANFD;
209 444
210typedef struct 445typedef struct
211{ 446{
212 W w; 447 W w;
213 int events; 448 int events;
214} ANPENDING; 449} ANPENDING;
215 450
451#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */
453typedef struct
454{
455 WL head;
456} ANFS;
457#endif
458
459/* Heap Entry */
460#if EV_HEAP_CACHE_AT
461 typedef struct {
462 ev_tstamp at;
463 WT w;
464 } ANHE;
465
466 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else
470 typedef WT ANHE;
471
472 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he)
475#endif
476
216#if EV_MULTIPLICITY 477#if EV_MULTIPLICITY
217 478
218struct ev_loop 479 struct ev_loop
219{ 480 {
481 ev_tstamp ev_rt_now;
482 #define ev_rt_now ((loop)->ev_rt_now)
220# define VAR(name,decl) decl; 483 #define VAR(name,decl) decl;
221# include "ev_vars.h" 484 #include "ev_vars.h"
222};
223# undef VAR 485 #undef VAR
486 };
224# include "ev_wrap.h" 487 #include "ev_wrap.h"
488
489 static struct ev_loop default_loop_struct;
490 struct ev_loop *ev_default_loop_ptr;
225 491
226#else 492#else
227 493
494 ev_tstamp ev_rt_now;
228# define VAR(name,decl) static decl; 495 #define VAR(name,decl) static decl;
229# include "ev_vars.h" 496 #include "ev_vars.h"
230# undef VAR 497 #undef VAR
498
499 static int ev_default_loop_ptr;
231 500
232#endif 501#endif
233 502
234/*****************************************************************************/ 503/*****************************************************************************/
235 504
236inline ev_tstamp 505ev_tstamp
237ev_time (void) 506ev_time (void)
238{ 507{
239#if EV_USE_REALTIME 508#if EV_USE_REALTIME
240 struct timespec ts; 509 struct timespec ts;
241 clock_gettime (CLOCK_REALTIME, &ts); 510 clock_gettime (CLOCK_REALTIME, &ts);
… …
245 gettimeofday (&tv, 0); 514 gettimeofday (&tv, 0);
246 return tv.tv_sec + tv.tv_usec * 1e-6; 515 return tv.tv_sec + tv.tv_usec * 1e-6;
247#endif 516#endif
248} 517}
249 518
250inline ev_tstamp 519ev_tstamp inline_size
251get_clock (void) 520get_clock (void)
252{ 521{
253#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
254 if (expect_true (have_monotonic)) 523 if (expect_true (have_monotonic))
255 { 524 {
… …
260#endif 529#endif
261 530
262 return ev_time (); 531 return ev_time ();
263} 532}
264 533
534#if EV_MULTIPLICITY
265ev_tstamp 535ev_tstamp
266ev_now (EV_P) 536ev_now (EV_P)
267{ 537{
268 return rt_now; 538 return ev_rt_now;
269} 539}
540#endif
270 541
271#define array_roundsize(base,n) ((n) | 4 & ~3) 542void
543ev_sleep (ev_tstamp delay)
544{
545 if (delay > 0.)
546 {
547#if EV_USE_NANOSLEEP
548 struct timespec ts;
272 549
550 ts.tv_sec = (time_t)delay;
551 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
552
553 nanosleep (&ts, 0);
554#elif defined(_WIN32)
555 Sleep ((unsigned long)(delay * 1e3));
556#else
557 struct timeval tv;
558
559 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561
562 select (0, 0, 0, 0, &tv);
563#endif
564 }
565}
566
567/*****************************************************************************/
568
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570
571int inline_size
572array_nextsize (int elem, int cur, int cnt)
573{
574 int ncur = cur + 1;
575
576 do
577 ncur <<= 1;
578 while (cnt > ncur);
579
580 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
581 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
582 {
583 ncur *= elem;
584 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
585 ncur = ncur - sizeof (void *) * 4;
586 ncur /= elem;
587 }
588
589 return ncur;
590}
591
592static noinline void *
593array_realloc (int elem, void *base, int *cur, int cnt)
594{
595 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur);
597}
598
273#define array_needsize(base,cur,cnt,init) \ 599#define array_needsize(type,base,cur,cnt,init) \
274 if (expect_false ((cnt) > cur)) \ 600 if (expect_false ((cnt) > (cur))) \
275 { \ 601 { \
276 int newcnt = cur; \ 602 int ocur_ = (cur); \
277 do \ 603 (base) = (type *)array_realloc \
278 { \ 604 (sizeof (type), (base), &(cur), (cnt)); \
279 newcnt = array_roundsize (base, newcnt << 1); \ 605 init ((base) + (ocur_), (cur) - ocur_); \
280 } \
281 while ((cnt) > newcnt); \
282 \
283 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
284 init (base + cur, newcnt - cur); \
285 cur = newcnt; \
286 } 606 }
287 607
608#if 0
288#define array_slim(stem) \ 609#define array_slim(type,stem) \
289 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 610 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290 { \ 611 { \
291 stem ## max = array_roundsize (stem ## cnt >> 1); \ 612 stem ## max = array_roundsize (stem ## cnt >> 1); \
292 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 613 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
293 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294 } 615 }
616#endif
295 617
296#define array_free(stem, idx) \ 618#define array_free(stem, idx) \
297 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
298 620
299/*****************************************************************************/ 621/*****************************************************************************/
300 622
301static void 623void noinline
624ev_feed_event (EV_P_ void *w, int revents)
625{
626 W w_ = (W)w;
627 int pri = ABSPRI (w_);
628
629 if (expect_false (w_->pending))
630 pendings [pri][w_->pending - 1].events |= revents;
631 else
632 {
633 w_->pending = ++pendingcnt [pri];
634 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
635 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents;
637 }
638}
639
640void inline_speed
641queue_events (EV_P_ W *events, int eventcnt, int type)
642{
643 int i;
644
645 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type);
647}
648
649/*****************************************************************************/
650
651void inline_size
302anfds_init (ANFD *base, int count) 652anfds_init (ANFD *base, int count)
303{ 653{
304 while (count--) 654 while (count--)
305 { 655 {
306 base->head = 0; 656 base->head = 0;
… …
309 659
310 ++base; 660 ++base;
311 } 661 }
312} 662}
313 663
314static void 664void inline_speed
315event (EV_P_ W w, int events)
316{
317 if (w->pending)
318 {
319 pendings [ABSPRI (w)][w->pending - 1].events |= events;
320 return;
321 }
322
323 w->pending = ++pendingcnt [ABSPRI (w)];
324 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
325 pendings [ABSPRI (w)][w->pending - 1].w = w;
326 pendings [ABSPRI (w)][w->pending - 1].events = events;
327}
328
329static void
330queue_events (EV_P_ W *events, int eventcnt, int type)
331{
332 int i;
333
334 for (i = 0; i < eventcnt; ++i)
335 event (EV_A_ events [i], type);
336}
337
338static void
339fd_event (EV_P_ int fd, int events) 665fd_event (EV_P_ int fd, int revents)
340{ 666{
341 ANFD *anfd = anfds + fd; 667 ANFD *anfd = anfds + fd;
342 struct ev_io *w; 668 ev_io *w;
343 669
344 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 670 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
345 { 671 {
346 int ev = w->events & events; 672 int ev = w->events & revents;
347 673
348 if (ev) 674 if (ev)
349 event (EV_A_ (W)w, ev); 675 ev_feed_event (EV_A_ (W)w, ev);
350 } 676 }
351} 677}
352 678
353/*****************************************************************************/ 679void
680ev_feed_fd_event (EV_P_ int fd, int revents)
681{
682 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents);
684}
354 685
355static void 686void inline_size
356fd_reify (EV_P) 687fd_reify (EV_P)
357{ 688{
358 int i; 689 int i;
359 690
360 for (i = 0; i < fdchangecnt; ++i) 691 for (i = 0; i < fdchangecnt; ++i)
361 { 692 {
362 int fd = fdchanges [i]; 693 int fd = fdchanges [i];
363 ANFD *anfd = anfds + fd; 694 ANFD *anfd = anfds + fd;
364 struct ev_io *w; 695 ev_io *w;
365 696
366 int events = 0; 697 unsigned char events = 0;
367 698
368 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 699 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
369 events |= w->events; 700 events |= (unsigned char)w->events;
370 701
702#if EV_SELECT_IS_WINSOCKET
703 if (events)
704 {
705 unsigned long argp;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
709 anfd->handle = _get_osfhandle (fd);
710 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
712 }
713#endif
714
715 {
716 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify;
718
371 anfd->reify = 0; 719 anfd->reify = 0;
372
373 method_modify (EV_A_ fd, anfd->events, events);
374 anfd->events = events; 720 anfd->events = events;
721
722 if (o_events != events || o_reify & EV_IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events);
724 }
375 } 725 }
376 726
377 fdchangecnt = 0; 727 fdchangecnt = 0;
378} 728}
379 729
380static void 730void inline_size
381fd_change (EV_P_ int fd) 731fd_change (EV_P_ int fd, int flags)
382{ 732{
383 if (anfds [fd].reify || fdchangecnt < 0) 733 unsigned char reify = anfds [fd].reify;
384 return;
385
386 anfds [fd].reify = 1; 734 anfds [fd].reify |= flags;
387 735
736 if (expect_true (!reify))
737 {
388 ++fdchangecnt; 738 ++fdchangecnt;
389 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390 fdchanges [fdchangecnt - 1] = fd; 740 fdchanges [fdchangecnt - 1] = fd;
741 }
391} 742}
392 743
393static void 744void inline_speed
394fd_kill (EV_P_ int fd) 745fd_kill (EV_P_ int fd)
395{ 746{
396 struct ev_io *w; 747 ev_io *w;
397 748
398 while ((w = (struct ev_io *)anfds [fd].head)) 749 while ((w = (ev_io *)anfds [fd].head))
399 { 750 {
400 ev_io_stop (EV_A_ w); 751 ev_io_stop (EV_A_ w);
401 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
402 } 753 }
754}
755
756int inline_size
757fd_valid (int fd)
758{
759#ifdef _WIN32
760 return _get_osfhandle (fd) != -1;
761#else
762 return fcntl (fd, F_GETFD) != -1;
763#endif
403} 764}
404 765
405/* called on EBADF to verify fds */ 766/* called on EBADF to verify fds */
406static void 767static void noinline
407fd_ebadf (EV_P) 768fd_ebadf (EV_P)
408{ 769{
409 int fd; 770 int fd;
410 771
411 for (fd = 0; fd < anfdmax; ++fd) 772 for (fd = 0; fd < anfdmax; ++fd)
412 if (anfds [fd].events) 773 if (anfds [fd].events)
413 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 774 if (!fd_valid (fd) == -1 && errno == EBADF)
414 fd_kill (EV_A_ fd); 775 fd_kill (EV_A_ fd);
415} 776}
416 777
417/* called on ENOMEM in select/poll to kill some fds and retry */ 778/* called on ENOMEM in select/poll to kill some fds and retry */
418static void 779static void noinline
419fd_enomem (EV_P) 780fd_enomem (EV_P)
420{ 781{
421 int fd; 782 int fd;
422 783
423 for (fd = anfdmax; fd--; ) 784 for (fd = anfdmax; fd--; )
… …
426 fd_kill (EV_A_ fd); 787 fd_kill (EV_A_ fd);
427 return; 788 return;
428 } 789 }
429} 790}
430 791
431/* susually called after fork if method needs to re-arm all fds from scratch */ 792/* usually called after fork if backend needs to re-arm all fds from scratch */
432static void 793static void noinline
433fd_rearm_all (EV_P) 794fd_rearm_all (EV_P)
434{ 795{
435 int fd; 796 int fd;
436 797
437 /* this should be highly optimised to not do anything but set a flag */
438 for (fd = 0; fd < anfdmax; ++fd) 798 for (fd = 0; fd < anfdmax; ++fd)
439 if (anfds [fd].events) 799 if (anfds [fd].events)
440 { 800 {
441 anfds [fd].events = 0; 801 anfds [fd].events = 0;
442 fd_change (EV_A_ fd); 802 fd_change (EV_A_ fd, EV_IOFDSET | 1);
443 } 803 }
444} 804}
445 805
446/*****************************************************************************/ 806/*****************************************************************************/
447 807
808/*
809 * the heap functions want a real array index. array index 0 uis guaranteed to not
810 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
811 * the branching factor of the d-tree.
812 */
813
814/*
815 * at the moment we allow libev the luxury of two heaps,
816 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
817 * which is more cache-efficient.
818 * the difference is about 5% with 50000+ watchers.
819 */
820#if EV_USE_4HEAP
821
822#define DHEAP 4
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k))
826
827/* away from the root */
828void inline_speed
829downheap (ANHE *heap, int N, int k)
830{
831 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0;
833
834 for (;;)
835 {
836 ev_tstamp minat;
837 ANHE *minpos;
838 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
839
840 /* find minimum child */
841 if (expect_true (pos + DHEAP - 1 < E))
842 {
843 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
846 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
847 }
848 else if (pos < E)
849 {
850 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
851 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
852 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
853 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
854 }
855 else
856 break;
857
858 if (ANHE_at (he) <= minat)
859 break;
860
861 heap [k] = *minpos;
862 ev_active (ANHE_w (*minpos)) = k;
863
864 k = minpos - heap;
865 }
866
867 heap [k] = he;
868 ev_active (ANHE_w (he)) = k;
869}
870
871#else /* 4HEAP */
872
873#define HEAP0 1
874#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p))
876
877/* away from the root */
878void inline_speed
879downheap (ANHE *heap, int N, int k)
880{
881 ANHE he = heap [k];
882
883 for (;;)
884 {
885 int c = k << 1;
886
887 if (c > N + HEAP0 - 1)
888 break;
889
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0;
892
893 if (ANHE_at (he) <= ANHE_at (heap [c]))
894 break;
895
896 heap [k] = heap [c];
897 ev_active (ANHE_w (heap [k])) = k;
898
899 k = c;
900 }
901
902 heap [k] = he;
903 ev_active (ANHE_w (he)) = k;
904}
905#endif
906
907/* towards the root */
908void inline_speed
909upheap (ANHE *heap, int k)
910{
911 ANHE he = heap [k];
912
913 for (;;)
914 {
915 int p = HPARENT (k);
916
917 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
918 break;
919
920 heap [k] = heap [p];
921 ev_active (ANHE_w (heap [k])) = k;
922 k = p;
923 }
924
925 heap [k] = he;
926 ev_active (ANHE_w (he)) = k;
927}
928
929void inline_size
930adjustheap (ANHE *heap, int N, int k)
931{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
933 upheap (heap, k);
934 else
935 downheap (heap, N, k);
936}
937
938/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size
940reheap (ANHE *heap, int N)
941{
942 int i;
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0);
947}
948
949#if EV_VERIFY
448static void 950static void
449upheap (WT *heap, int k) 951checkheap (ANHE *heap, int N)
450{ 952{
451 WT w = heap [k]; 953 int i;
452 954
453 while (k && heap [k >> 1]->at > w->at) 955 for (i = HEAP0; i < N + HEAP0; ++i)
454 {
455 heap [k] = heap [k >> 1];
456 ((W)heap [k])->active = k + 1;
457 k >>= 1;
458 } 956 {
459 957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
460 heap [k] = w; 958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
461 ((W)heap [k])->active = k + 1; 959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
462
463}
464
465static void
466downheap (WT *heap, int N, int k)
467{
468 WT w = heap [k];
469
470 while (k < (N >> 1))
471 { 960 }
472 int j = k << 1;
473
474 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
475 ++j;
476
477 if (w->at <= heap [j]->at)
478 break;
479
480 heap [k] = heap [j];
481 ((W)heap [k])->active = k + 1;
482 k = j;
483 }
484
485 heap [k] = w;
486 ((W)heap [k])->active = k + 1;
487} 961}
962#endif
488 963
489/*****************************************************************************/ 964/*****************************************************************************/
490 965
491typedef struct 966typedef struct
492{ 967{
493 WL head; 968 WL head;
494 sig_atomic_t volatile gotsig; 969 EV_ATOMIC_T gotsig;
495} ANSIG; 970} ANSIG;
496 971
497static ANSIG *signals; 972static ANSIG *signals;
498static int signalmax; 973static int signalmax;
499 974
500static int sigpipe [2]; 975static EV_ATOMIC_T gotsig;
501static sig_atomic_t volatile gotsig;
502static struct ev_io sigev;
503 976
504static void 977void inline_size
505signals_init (ANSIG *base, int count) 978signals_init (ANSIG *base, int count)
506{ 979{
507 while (count--) 980 while (count--)
508 { 981 {
509 base->head = 0; 982 base->head = 0;
… …
511 984
512 ++base; 985 ++base;
513 } 986 }
514} 987}
515 988
989/*****************************************************************************/
990
991void inline_speed
992fd_intern (int fd)
993{
994#ifdef _WIN32
995 int arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif
1001}
1002
1003static void noinline
1004evpipe_init (EV_P)
1005{
1006 if (!ev_is_active (&pipeev))
1007 {
1008#if EV_USE_EVENTFD
1009 if ((evfd = eventfd (0, 0)) >= 0)
1010 {
1011 evpipe [0] = -1;
1012 fd_intern (evfd);
1013 ev_io_set (&pipeev, evfd, EV_READ);
1014 }
1015 else
1016#endif
1017 {
1018 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe");
1020
1021 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ);
1024 }
1025
1026 ev_io_start (EV_A_ &pipeev);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 }
1029}
1030
1031void inline_size
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{
1034 if (!*flag)
1035 {
1036 int old_errno = errno; /* save errno because write might clobber it */
1037
1038 *flag = 1;
1039
1040#if EV_USE_EVENTFD
1041 if (evfd >= 0)
1042 {
1043 uint64_t counter = 1;
1044 write (evfd, &counter, sizeof (uint64_t));
1045 }
1046 else
1047#endif
1048 write (evpipe [1], &old_errno, 1);
1049
1050 errno = old_errno;
1051 }
1052}
1053
516static void 1054static void
1055pipecb (EV_P_ ev_io *iow, int revents)
1056{
1057#if EV_USE_EVENTFD
1058 if (evfd >= 0)
1059 {
1060 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t));
1062 }
1063 else
1064#endif
1065 {
1066 char dummy;
1067 read (evpipe [0], &dummy, 1);
1068 }
1069
1070 if (gotsig && ev_is_default_loop (EV_A))
1071 {
1072 int signum;
1073 gotsig = 0;
1074
1075 for (signum = signalmax; signum--; )
1076 if (signals [signum].gotsig)
1077 ev_feed_signal_event (EV_A_ signum + 1);
1078 }
1079
1080#if EV_ASYNC_ENABLE
1081 if (gotasync)
1082 {
1083 int i;
1084 gotasync = 0;
1085
1086 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent)
1088 {
1089 asyncs [i]->sent = 0;
1090 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1091 }
1092 }
1093#endif
1094}
1095
1096/*****************************************************************************/
1097
1098static void
517sighandler (int signum) 1099ev_sighandler (int signum)
518{ 1100{
1101#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct;
1103#endif
1104
519#if WIN32 1105#if _WIN32
520 signal (signum, sighandler); 1106 signal (signum, ev_sighandler);
521#endif 1107#endif
522 1108
523 signals [signum - 1].gotsig = 1; 1109 signals [signum - 1].gotsig = 1;
524 1110 evpipe_write (EV_A_ &gotsig);
525 if (!gotsig)
526 {
527 int old_errno = errno;
528 gotsig = 1;
529 write (sigpipe [1], &signum, 1);
530 errno = old_errno;
531 }
532} 1111}
533 1112
534static void 1113void noinline
535sigcb (EV_P_ struct ev_io *iow, int revents) 1114ev_feed_signal_event (EV_P_ int signum)
536{ 1115{
537 WL w; 1116 WL w;
1117
1118#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120#endif
1121
538 int signum; 1122 --signum;
539 1123
540 read (sigpipe [0], &revents, 1); 1124 if (signum < 0 || signum >= signalmax)
541 gotsig = 0; 1125 return;
542 1126
543 for (signum = signalmax; signum--; )
544 if (signals [signum].gotsig)
545 {
546 signals [signum].gotsig = 0; 1127 signals [signum].gotsig = 0;
547 1128
548 for (w = signals [signum].head; w; w = w->next) 1129 for (w = signals [signum].head; w; w = w->next)
549 event (EV_A_ (W)w, EV_SIGNAL); 1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
550 }
551}
552
553static void
554siginit (EV_P)
555{
556#ifndef WIN32
557 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
558 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560 /* rather than sort out wether we really need nb, set it */
561 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563#endif
564
565 ev_io_set (&sigev, sigpipe [0], EV_READ);
566 ev_io_start (EV_A_ &sigev);
567 ev_unref (EV_A); /* child watcher should not keep loop alive */
568} 1131}
569 1132
570/*****************************************************************************/ 1133/*****************************************************************************/
571 1134
1135static WL childs [EV_PID_HASHSIZE];
1136
572#ifndef WIN32 1137#ifndef _WIN32
573 1138
574static struct ev_child *childs [PID_HASHSIZE];
575static struct ev_signal childev; 1139static ev_signal childev;
1140
1141#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0
1143#endif
1144
1145void inline_speed
1146child_reap (EV_P_ int chain, int pid, int status)
1147{
1148 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150
1151 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1152 {
1153 if ((w->pid == pid || !w->pid)
1154 && (!traced || (w->flags & 1)))
1155 {
1156 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1157 w->rpid = pid;
1158 w->rstatus = status;
1159 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1160 }
1161 }
1162}
576 1163
577#ifndef WCONTINUED 1164#ifndef WCONTINUED
578# define WCONTINUED 0 1165# define WCONTINUED 0
579#endif 1166#endif
580 1167
581static void 1168static void
582child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
583{
584 struct ev_child *w;
585
586 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
587 if (w->pid == pid || !w->pid)
588 {
589 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
590 w->rpid = pid;
591 w->rstatus = status;
592 event (EV_A_ (W)w, EV_CHILD);
593 }
594}
595
596static void
597childcb (EV_P_ struct ev_signal *sw, int revents) 1169childcb (EV_P_ ev_signal *sw, int revents)
598{ 1170{
599 int pid, status; 1171 int pid, status;
600 1172
1173 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
601 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1174 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
602 { 1175 if (!WCONTINUED
1176 || errno != EINVAL
1177 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1178 return;
1179
603 /* make sure we are called again until all childs have been reaped */ 1180 /* make sure we are called again until all children have been reaped */
1181 /* we need to do it this way so that the callback gets called before we continue */
604 event (EV_A_ (W)sw, EV_SIGNAL); 1182 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605 1183
606 child_reap (EV_A_ sw, pid, pid, status); 1184 child_reap (EV_A_ pid, pid, status);
1185 if (EV_PID_HASHSIZE > 1)
607 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1186 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
608 }
609} 1187}
610 1188
611#endif 1189#endif
612 1190
613/*****************************************************************************/ 1191/*****************************************************************************/
614 1192
1193#if EV_USE_PORT
1194# include "ev_port.c"
1195#endif
615#if EV_USE_KQUEUE 1196#if EV_USE_KQUEUE
616# include "ev_kqueue.c" 1197# include "ev_kqueue.c"
617#endif 1198#endif
618#if EV_USE_EPOLL 1199#if EV_USE_EPOLL
619# include "ev_epoll.c" 1200# include "ev_epoll.c"
… …
636{ 1217{
637 return EV_VERSION_MINOR; 1218 return EV_VERSION_MINOR;
638} 1219}
639 1220
640/* return true if we are running with elevated privileges and should ignore env variables */ 1221/* return true if we are running with elevated privileges and should ignore env variables */
641static int 1222int inline_size
642enable_secure (void) 1223enable_secure (void)
643{ 1224{
644#ifdef WIN32 1225#ifdef _WIN32
645 return 0; 1226 return 0;
646#else 1227#else
647 return getuid () != geteuid () 1228 return getuid () != geteuid ()
648 || getgid () != getegid (); 1229 || getgid () != getegid ();
649#endif 1230#endif
650} 1231}
651 1232
652int 1233unsigned int
653ev_method (EV_P) 1234ev_supported_backends (void)
654{ 1235{
655 return method; 1236 unsigned int flags = 0;
656}
657 1237
658static void 1238 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
659loop_init (EV_P_ int methods) 1239 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1240 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1241 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1242 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1243
1244 return flags;
1245}
1246
1247unsigned int
1248ev_recommended_backends (void)
660{ 1249{
661 if (!method) 1250 unsigned int flags = ev_supported_backends ();
1251
1252#ifndef __NetBSD__
1253 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE;
1256#endif
1257#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation
1259 flags &= ~EVBACKEND_POLL;
1260#endif
1261
1262 return flags;
1263}
1264
1265unsigned int
1266ev_embeddable_backends (void)
1267{
1268 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1269
1270 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1271 /* please fix it and tell me how to detect the fix */
1272 flags &= ~EVBACKEND_EPOLL;
1273
1274 return flags;
1275}
1276
1277unsigned int
1278ev_backend (EV_P)
1279{
1280 return backend;
1281}
1282
1283unsigned int
1284ev_loop_count (EV_P)
1285{
1286 return loop_count;
1287}
1288
1289void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{
1292 io_blocktime = interval;
1293}
1294
1295void
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{
1298 timeout_blocktime = interval;
1299}
1300
1301static void noinline
1302loop_init (EV_P_ unsigned int flags)
1303{
1304 if (!backend)
662 { 1305 {
663#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
664 { 1307 {
665 struct timespec ts; 1308 struct timespec ts;
666 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667 have_monotonic = 1; 1310 have_monotonic = 1;
668 } 1311 }
669#endif 1312#endif
670 1313
671 rt_now = ev_time (); 1314 ev_rt_now = ev_time ();
672 mn_now = get_clock (); 1315 mn_now = get_clock ();
673 now_floor = mn_now; 1316 now_floor = mn_now;
674 rtmn_diff = rt_now - mn_now; 1317 rtmn_diff = ev_rt_now - mn_now;
675 1318
676 if (methods == EVMETHOD_AUTO) 1319 io_blocktime = 0.;
677 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1320 timeout_blocktime = 0.;
1321 backend = 0;
1322 backend_fd = -1;
1323 gotasync = 0;
1324#if EV_USE_INOTIFY
1325 fs_fd = -2;
1326#endif
1327
1328 /* pid check not overridable via env */
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif
1333
1334 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS"))
678 methods = atoi (getenv ("LIBEV_METHODS")); 1337 flags = atoi (getenv ("LIBEV_FLAGS"));
679 else
680 methods = EVMETHOD_ANY;
681 1338
682 method = 0; 1339 if (!(flags & 0x0000ffffU))
683#if EV_USE_WIN32 1340 flags |= ev_recommended_backends ();
684 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1341
1342#if EV_USE_PORT
1343 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
685#endif 1344#endif
686#if EV_USE_KQUEUE 1345#if EV_USE_KQUEUE
687 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1346 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
688#endif 1347#endif
689#if EV_USE_EPOLL 1348#if EV_USE_EPOLL
690 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1349 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
691#endif 1350#endif
692#if EV_USE_POLL 1351#if EV_USE_POLL
693 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1352 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
694#endif 1353#endif
695#if EV_USE_SELECT 1354#if EV_USE_SELECT
696 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
697#endif 1356#endif
698 }
699}
700 1357
701void 1358 ev_init (&pipeev, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI);
1360 }
1361}
1362
1363static void noinline
702loop_destroy (EV_P) 1364loop_destroy (EV_P)
703{ 1365{
704 int i; 1366 int i;
705 1367
1368 if (ev_is_active (&pipeev))
1369 {
1370 ev_ref (EV_A); /* signal watcher */
1371 ev_io_stop (EV_A_ &pipeev);
1372
1373#if EV_USE_EVENTFD
1374 if (evfd >= 0)
1375 close (evfd);
1376#endif
1377
1378 if (evpipe [0] >= 0)
1379 {
1380 close (evpipe [0]);
1381 close (evpipe [1]);
1382 }
1383 }
1384
706#if EV_USE_WIN32 1385#if EV_USE_INOTIFY
707 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1386 if (fs_fd >= 0)
1387 close (fs_fd);
1388#endif
1389
1390 if (backend_fd >= 0)
1391 close (backend_fd);
1392
1393#if EV_USE_PORT
1394 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
708#endif 1395#endif
709#if EV_USE_KQUEUE 1396#if EV_USE_KQUEUE
710 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1397 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
711#endif 1398#endif
712#if EV_USE_EPOLL 1399#if EV_USE_EPOLL
713 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1400 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
714#endif 1401#endif
715#if EV_USE_POLL 1402#if EV_USE_POLL
716 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1403 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
717#endif 1404#endif
718#if EV_USE_SELECT 1405#if EV_USE_SELECT
719 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1406 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
720#endif 1407#endif
721 1408
722 for (i = NUMPRI; i--; ) 1409 for (i = NUMPRI; i--; )
1410 {
723 array_free (pending, [i]); 1411 array_free (pending, [i]);
1412#if EV_IDLE_ENABLE
1413 array_free (idle, [i]);
1414#endif
1415 }
724 1416
1417 ev_free (anfds); anfdmax = 0;
1418
1419 /* have to use the microsoft-never-gets-it-right macro */
725 array_free (fdchange, ); 1420 array_free (fdchange, EMPTY);
726 array_free (timer, ); 1421 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE
727 array_free (periodic, ); 1423 array_free (periodic, EMPTY);
728 array_free (idle, ); 1424#endif
1425#if EV_FORK_ENABLE
1426 array_free (fork, EMPTY);
1427#endif
729 array_free (prepare, ); 1428 array_free (prepare, EMPTY);
730 array_free (check, ); 1429 array_free (check, EMPTY);
1430#if EV_ASYNC_ENABLE
1431 array_free (async, EMPTY);
1432#endif
731 1433
732 method = 0; 1434 backend = 0;
733 /*TODO*/
734} 1435}
735 1436
736void 1437#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P);
1439#endif
1440
1441void inline_size
737loop_fork (EV_P) 1442loop_fork (EV_P)
738{ 1443{
739 /*TODO*/ 1444#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif
1447#if EV_USE_KQUEUE
1448 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1449#endif
740#if EV_USE_EPOLL 1450#if EV_USE_EPOLL
741 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1451 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742#endif 1452#endif
743#if EV_USE_KQUEUE 1453#if EV_USE_INOTIFY
744 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1454 infy_fork (EV_A);
745#endif 1455#endif
1456
1457 if (ev_is_active (&pipeev))
1458 {
1459 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */
1461 gotsig = 1;
1462#if EV_ASYNC_ENABLE
1463 gotasync = 1;
1464#endif
1465
1466 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev);
1468
1469#if EV_USE_EVENTFD
1470 if (evfd >= 0)
1471 close (evfd);
1472#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1479
1480 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ);
1483 }
1484
1485 postfork = 0;
746} 1486}
747 1487
748#if EV_MULTIPLICITY 1488#if EV_MULTIPLICITY
749struct ev_loop * 1489struct ev_loop *
750ev_loop_new (int methods) 1490ev_loop_new (unsigned int flags)
751{ 1491{
752 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
753 1493
754 memset (loop, 0, sizeof (struct ev_loop)); 1494 memset (loop, 0, sizeof (struct ev_loop));
755 1495
756 loop_init (EV_A_ methods); 1496 loop_init (EV_A_ flags);
757 1497
758 if (ev_method (EV_A)) 1498 if (ev_backend (EV_A))
759 return loop; 1499 return loop;
760 1500
761 return 0; 1501 return 0;
762} 1502}
763 1503
… …
769} 1509}
770 1510
771void 1511void
772ev_loop_fork (EV_P) 1512ev_loop_fork (EV_P)
773{ 1513{
774 loop_fork (EV_A); 1514 postfork = 1; /* must be in line with ev_default_fork */
775} 1515}
1516
1517#if EV_VERIFY
1518static void
1519array_check (W **ws, int cnt)
1520{
1521 while (cnt--)
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1523}
1524
1525static void
1526ev_loop_verify (EV_P)
1527{
1528 int i;
1529
1530 checkheap (timers, timercnt);
1531#if EV_PERIODIC_ENABLE
1532 checkheap (periodics, periodiccnt);
1533#endif
1534
1535#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; )
1537 array_check ((W **)idles [i], idlecnt [i]);
1538#endif
1539#if EV_FORK_ENABLE
1540 array_check ((W **)forks, forkcnt);
1541#endif
1542 array_check ((W **)prepares, preparecnt);
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE
1545 array_check ((W **)asyncs, asynccnt);
1546#endif
1547}
1548#endif
776 1549
777#endif 1550#endif
778 1551
779#if EV_MULTIPLICITY 1552#if EV_MULTIPLICITY
780struct ev_loop default_loop_struct;
781static struct ev_loop *default_loop;
782
783struct ev_loop * 1553struct ev_loop *
1554ev_default_loop_init (unsigned int flags)
784#else 1555#else
785static int default_loop;
786
787int 1556int
1557ev_default_loop (unsigned int flags)
788#endif 1558#endif
789ev_default_loop (int methods)
790{ 1559{
791 if (sigpipe [0] == sigpipe [1])
792 if (pipe (sigpipe))
793 return 0;
794
795 if (!default_loop) 1560 if (!ev_default_loop_ptr)
796 { 1561 {
797#if EV_MULTIPLICITY 1562#if EV_MULTIPLICITY
798 struct ev_loop *loop = default_loop = &default_loop_struct; 1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799#else 1564#else
800 default_loop = 1; 1565 ev_default_loop_ptr = 1;
801#endif 1566#endif
802 1567
803 loop_init (EV_A_ methods); 1568 loop_init (EV_A_ flags);
804 1569
805 if (ev_method (EV_A)) 1570 if (ev_backend (EV_A))
806 { 1571 {
807 ev_watcher_init (&sigev, sigcb);
808 ev_set_priority (&sigev, EV_MAXPRI);
809 siginit (EV_A);
810
811#ifndef WIN32 1572#ifndef _WIN32
812 ev_signal_init (&childev, childcb, SIGCHLD); 1573 ev_signal_init (&childev, childcb, SIGCHLD);
813 ev_set_priority (&childev, EV_MAXPRI); 1574 ev_set_priority (&childev, EV_MAXPRI);
814 ev_signal_start (EV_A_ &childev); 1575 ev_signal_start (EV_A_ &childev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1576 ev_unref (EV_A); /* child watcher should not keep loop alive */
816#endif 1577#endif
817 } 1578 }
818 else 1579 else
819 default_loop = 0; 1580 ev_default_loop_ptr = 0;
820 } 1581 }
821 1582
822 return default_loop; 1583 return ev_default_loop_ptr;
823} 1584}
824 1585
825void 1586void
826ev_default_destroy (void) 1587ev_default_destroy (void)
827{ 1588{
828#if EV_MULTIPLICITY 1589#if EV_MULTIPLICITY
829 struct ev_loop *loop = default_loop; 1590 struct ev_loop *loop = ev_default_loop_ptr;
830#endif 1591#endif
831 1592
1593#ifndef _WIN32
832 ev_ref (EV_A); /* child watcher */ 1594 ev_ref (EV_A); /* child watcher */
833 ev_signal_stop (EV_A_ &childev); 1595 ev_signal_stop (EV_A_ &childev);
834 1596#endif
835 ev_ref (EV_A); /* signal watcher */
836 ev_io_stop (EV_A_ &sigev);
837
838 close (sigpipe [0]); sigpipe [0] = 0;
839 close (sigpipe [1]); sigpipe [1] = 0;
840 1597
841 loop_destroy (EV_A); 1598 loop_destroy (EV_A);
842} 1599}
843 1600
844void 1601void
845ev_default_fork (void) 1602ev_default_fork (void)
846{ 1603{
847#if EV_MULTIPLICITY 1604#if EV_MULTIPLICITY
848 struct ev_loop *loop = default_loop; 1605 struct ev_loop *loop = ev_default_loop_ptr;
849#endif 1606#endif
850 1607
851 loop_fork (EV_A); 1608 if (backend)
852 1609 postfork = 1; /* must be in line with ev_loop_fork */
853 ev_io_stop (EV_A_ &sigev);
854 close (sigpipe [0]);
855 close (sigpipe [1]);
856 pipe (sigpipe);
857
858 ev_ref (EV_A); /* signal watcher */
859 siginit (EV_A);
860} 1610}
861 1611
862/*****************************************************************************/ 1612/*****************************************************************************/
863 1613
864static void 1614void
1615ev_invoke (EV_P_ void *w, int revents)
1616{
1617 EV_CB_INVOKE ((W)w, revents);
1618}
1619
1620void inline_speed
865call_pending (EV_P) 1621call_pending (EV_P)
866{ 1622{
867 int pri; 1623 int pri;
1624
1625 EV_FREQUENT_CHECK;
868 1626
869 for (pri = NUMPRI; pri--; ) 1627 for (pri = NUMPRI; pri--; )
870 while (pendingcnt [pri]) 1628 while (pendingcnt [pri])
871 { 1629 {
872 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873 1631
874 if (p->w) 1632 if (expect_true (p->w))
875 { 1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
876 p->w->pending = 0; 1636 p->w->pending = 0;
877 p->w->cb (EV_A_ p->w, p->events); 1637 EV_CB_INVOKE (p->w, p->events);
878 } 1638 }
879 } 1639 }
880}
881 1640
882static void 1641 EV_FREQUENT_CHECK;
1642}
1643
1644#if EV_IDLE_ENABLE
1645void inline_size
1646idle_reify (EV_P)
1647{
1648 if (expect_false (idleall))
1649 {
1650 int pri;
1651
1652 for (pri = NUMPRI; pri--; )
1653 {
1654 if (pendingcnt [pri])
1655 break;
1656
1657 if (idlecnt [pri])
1658 {
1659 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1660 break;
1661 }
1662 }
1663 }
1664}
1665#endif
1666
1667void inline_size
883timers_reify (EV_P) 1668timers_reify (EV_P)
884{ 1669{
1670 EV_FREQUENT_CHECK;
1671
885 while (timercnt && ((WT)timers [0])->at <= mn_now) 1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
886 { 1673 {
887 struct ev_timer *w = timers [0]; 1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
888 1675
889 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
890 1677
891 /* first reschedule or stop timer */ 1678 /* first reschedule or stop timer */
892 if (w->repeat) 1679 if (w->repeat)
893 { 1680 {
1681 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now;
1684
894 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
895 ((WT)w)->at = mn_now + w->repeat; 1686
1687 ANHE_at_cache (timers [HEAP0]);
896 downheap ((WT *)timers, timercnt, 0); 1688 downheap (timers, timercnt, HEAP0);
897 } 1689 }
898 else 1690 else
899 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900 1692
1693 EV_FREQUENT_CHECK;
901 event (EV_A_ (W)w, EV_TIMEOUT); 1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902 } 1695 }
903} 1696}
904 1697
905static void 1698#if EV_PERIODIC_ENABLE
1699void inline_size
906periodics_reify (EV_P) 1700periodics_reify (EV_P)
907{ 1701{
1702 EV_FREQUENT_CHECK;
908 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
909 { 1704 {
910 struct ev_periodic *w = periodics [0]; 1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
911 1706
912 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
913 1708
914 /* first reschedule or stop timer */ 1709 /* first reschedule or stop timer */
915 if (w->interval) 1710 if (w->reschedule_cb)
916 { 1711 {
917 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
918 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1713
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715
1716 ANHE_at_cache (periodics [HEAP0]);
919 downheap ((WT *)periodics, periodiccnt, 0); 1717 downheap (periodics, periodiccnt, HEAP0);
1718 EV_FREQUENT_CHECK;
1719 }
1720 else if (w->interval)
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
920 } 1738 }
921 else 1739 else
922 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923 1741
1742 EV_FREQUENT_CHECK;
924 event (EV_A_ (W)w, EV_PERIODIC); 1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925 } 1744 }
926} 1745}
927 1746
928static void 1747static void noinline
929periodics_reschedule (EV_P) 1748periodics_reschedule (EV_P)
930{ 1749{
931 int i; 1750 int i;
932 1751
933 /* adjust periodics after time jump */ 1752 /* adjust periodics after time jump */
934 for (i = 0; i < periodiccnt; ++i) 1753 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
935 { 1754 {
936 struct ev_periodic *w = periodics [i]; 1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
937 1756
1757 if (w->reschedule_cb)
1758 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
938 if (w->interval) 1759 else if (w->interval)
1760 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1761
1762 ANHE_at_cache (periodics [i]);
1763 }
1764
1765 reheap (periodics, periodiccnt);
1766}
1767#endif
1768
1769void inline_speed
1770time_update (EV_P_ ev_tstamp max_block)
1771{
1772 int i;
1773
1774#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic))
1776 {
1777 ev_tstamp odiff = rtmn_diff;
1778
1779 mn_now = get_clock ();
1780
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1782 /* interpolate in the meantime */
1783 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
939 { 1784 {
940 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1785 ev_rt_now = rtmn_diff + mn_now;
1786 return;
1787 }
941 1788
942 if (fabs (diff) >= 1e-4) 1789 now_floor = mn_now;
1790 ev_rt_now = ev_time ();
1791
1792 /* loop a few times, before making important decisions.
1793 * on the choice of "4": one iteration isn't enough,
1794 * in case we get preempted during the calls to
1795 * ev_time and get_clock. a second call is almost guaranteed
1796 * to succeed in that case, though. and looping a few more times
1797 * doesn't hurt either as we only do this on time-jumps or
1798 * in the unlikely event of having been preempted here.
1799 */
1800 for (i = 4; --i; )
1801 {
1802 rtmn_diff = ev_rt_now - mn_now;
1803
1804 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1805 return; /* all is well */
1806
1807 ev_rt_now = ev_time ();
1808 mn_now = get_clock ();
1809 now_floor = mn_now;
1810 }
1811
1812# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A);
1814# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 }
1818 else
1819#endif
1820 {
1821 ev_rt_now = ev_time ();
1822
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 {
1825#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A);
1827#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
943 { 1830 {
944 ev_periodic_stop (EV_A_ w); 1831 ANHE *he = timers + i + HEAP0;
945 ev_periodic_start (EV_A_ w); 1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
946 1833 ANHE_at_cache (*he);
947 i = 0; /* restart loop, inefficient, but time jumps should be rare */
948 } 1834 }
949 } 1835 }
950 }
951}
952 1836
953inline int
954time_update_monotonic (EV_P)
955{
956 mn_now = get_clock ();
957
958 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959 {
960 rt_now = rtmn_diff + mn_now;
961 return 0;
962 }
963 else
964 {
965 now_floor = mn_now;
966 rt_now = ev_time ();
967 return 1;
968 }
969}
970
971static void
972time_update (EV_P)
973{
974 int i;
975
976#if EV_USE_MONOTONIC
977 if (expect_true (have_monotonic))
978 {
979 if (time_update_monotonic (EV_A))
980 {
981 ev_tstamp odiff = rtmn_diff;
982
983 for (i = 4; --i; ) /* loop a few times, before making important decisions */
984 {
985 rtmn_diff = rt_now - mn_now;
986
987 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988 return; /* all is well */
989
990 rt_now = ev_time ();
991 mn_now = get_clock ();
992 now_floor = mn_now;
993 }
994
995 periodics_reschedule (EV_A);
996 /* no timer adjustment, as the monotonic clock doesn't jump */
997 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998 }
999 }
1000 else
1001#endif
1002 {
1003 rt_now = ev_time ();
1004
1005 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006 {
1007 periodics_reschedule (EV_A);
1008
1009 /* adjust timers. this is easy, as the offset is the same for all */
1010 for (i = 0; i < timercnt; ++i)
1011 ((WT)timers [i])->at += rt_now - mn_now;
1012 }
1013
1014 mn_now = rt_now; 1837 mn_now = ev_rt_now;
1015 } 1838 }
1016} 1839}
1017 1840
1018void 1841void
1019ev_ref (EV_P) 1842ev_ref (EV_P)
… …
1030static int loop_done; 1853static int loop_done;
1031 1854
1032void 1855void
1033ev_loop (EV_P_ int flags) 1856ev_loop (EV_P_ int flags)
1034{ 1857{
1035 double block; 1858 loop_done = EVUNLOOP_CANCEL;
1036 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1859
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1037 1861
1038 do 1862 do
1039 { 1863 {
1864#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid))
1867 {
1868 curpid = getpid ();
1869 postfork = 1;
1870 }
1871#endif
1872
1873#if EV_FORK_ENABLE
1874 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork))
1876 if (forkcnt)
1877 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A);
1880 }
1881#endif
1882
1040 /* queue check watchers (and execute them) */ 1883 /* queue prepare watchers (and execute them) */
1041 if (expect_false (preparecnt)) 1884 if (expect_false (preparecnt))
1042 { 1885 {
1043 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044 call_pending (EV_A); 1887 call_pending (EV_A);
1045 } 1888 }
1046 1889
1890 if (expect_false (!activecnt))
1891 break;
1892
1893 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork))
1895 loop_fork (EV_A);
1896
1047 /* update fd-related kernel structures */ 1897 /* update fd-related kernel structures */
1048 fd_reify (EV_A); 1898 fd_reify (EV_A);
1049 1899
1050 /* calculate blocking time */ 1900 /* calculate blocking time */
1901 {
1902 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.;
1051 1904
1052 /* we only need this for !monotonic clockor timers, but as we basically 1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1053 always have timers, we just calculate it always */
1054#if EV_USE_MONOTONIC
1055 if (expect_true (have_monotonic))
1056 time_update_monotonic (EV_A);
1057 else
1058#endif
1059 { 1906 {
1060 rt_now = ev_time (); 1907 /* update time to cancel out callback processing overhead */
1061 mn_now = rt_now; 1908 time_update (EV_A_ 1e100);
1062 }
1063 1909
1064 if (flags & EVLOOP_NONBLOCK || idlecnt)
1065 block = 0.;
1066 else
1067 {
1068 block = MAX_BLOCKTIME; 1910 waittime = MAX_BLOCKTIME;
1069 1911
1070 if (timercnt) 1912 if (timercnt)
1071 { 1913 {
1072 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1914 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1073 if (block > to) block = to; 1915 if (waittime > to) waittime = to;
1074 } 1916 }
1075 1917
1918#if EV_PERIODIC_ENABLE
1076 if (periodiccnt) 1919 if (periodiccnt)
1077 { 1920 {
1078 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1079 if (block > to) block = to; 1922 if (waittime > to) waittime = to;
1080 } 1923 }
1924#endif
1081 1925
1082 if (block < 0.) block = 0.; 1926 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime;
1928
1929 sleeptime = waittime - backend_fudge;
1930
1931 if (expect_true (sleeptime > io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 {
1936 ev_sleep (sleeptime);
1937 waittime -= sleeptime;
1938 }
1083 } 1939 }
1084 1940
1085 method_poll (EV_A_ block); 1941 ++loop_count;
1942 backend_poll (EV_A_ waittime);
1086 1943
1087 /* update rt_now, do magic */ 1944 /* update ev_rt_now, do magic */
1088 time_update (EV_A); 1945 time_update (EV_A_ waittime + sleeptime);
1946 }
1089 1947
1090 /* queue pending timers and reschedule them */ 1948 /* queue pending timers and reschedule them */
1091 timers_reify (EV_A); /* relative timers called last */ 1949 timers_reify (EV_A); /* relative timers called last */
1950#if EV_PERIODIC_ENABLE
1092 periodics_reify (EV_A); /* absolute timers called first */ 1951 periodics_reify (EV_A); /* absolute timers called first */
1952#endif
1093 1953
1954#if EV_IDLE_ENABLE
1094 /* queue idle watchers unless io or timers are pending */ 1955 /* queue idle watchers unless other events are pending */
1095 if (!pendingcnt) 1956 idle_reify (EV_A);
1096 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1957#endif
1097 1958
1098 /* queue check watchers, to be executed first */ 1959 /* queue check watchers, to be executed first */
1099 if (checkcnt) 1960 if (expect_false (checkcnt))
1100 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101 1962
1102 call_pending (EV_A); 1963 call_pending (EV_A);
1103 } 1964 }
1104 while (activecnt && !loop_done); 1965 while (expect_true (
1966 activecnt
1967 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 ));
1105 1970
1106 if (loop_done != 2) 1971 if (loop_done == EVUNLOOP_ONE)
1107 loop_done = 0; 1972 loop_done = EVUNLOOP_CANCEL;
1108} 1973}
1109 1974
1110void 1975void
1111ev_unloop (EV_P_ int how) 1976ev_unloop (EV_P_ int how)
1112{ 1977{
1113 loop_done = how; 1978 loop_done = how;
1114} 1979}
1115 1980
1116/*****************************************************************************/ 1981/*****************************************************************************/
1117 1982
1118inline void 1983void inline_size
1119wlist_add (WL *head, WL elem) 1984wlist_add (WL *head, WL elem)
1120{ 1985{
1121 elem->next = *head; 1986 elem->next = *head;
1122 *head = elem; 1987 *head = elem;
1123} 1988}
1124 1989
1125inline void 1990void inline_size
1126wlist_del (WL *head, WL elem) 1991wlist_del (WL *head, WL elem)
1127{ 1992{
1128 while (*head) 1993 while (*head)
1129 { 1994 {
1130 if (*head == elem) 1995 if (*head == elem)
… …
1135 2000
1136 head = &(*head)->next; 2001 head = &(*head)->next;
1137 } 2002 }
1138} 2003}
1139 2004
1140inline void 2005void inline_speed
1141ev_clear_pending (EV_P_ W w) 2006clear_pending (EV_P_ W w)
1142{ 2007{
1143 if (w->pending) 2008 if (w->pending)
1144 { 2009 {
1145 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2010 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146 w->pending = 0; 2011 w->pending = 0;
1147 } 2012 }
1148} 2013}
1149 2014
1150inline void 2015int
2016ev_clear_pending (EV_P_ void *w)
2017{
2018 W w_ = (W)w;
2019 int pending = w_->pending;
2020
2021 if (expect_true (pending))
2022 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2024 w_->pending = 0;
2025 p->w = 0;
2026 return p->events;
2027 }
2028 else
2029 return 0;
2030}
2031
2032void inline_size
2033pri_adjust (EV_P_ W w)
2034{
2035 int pri = w->priority;
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri;
2039}
2040
2041void inline_speed
1151ev_start (EV_P_ W w, int active) 2042ev_start (EV_P_ W w, int active)
1152{ 2043{
1153 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2044 pri_adjust (EV_A_ w);
1154 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155
1156 w->active = active; 2045 w->active = active;
1157 ev_ref (EV_A); 2046 ev_ref (EV_A);
1158} 2047}
1159 2048
1160inline void 2049void inline_size
1161ev_stop (EV_P_ W w) 2050ev_stop (EV_P_ W w)
1162{ 2051{
1163 ev_unref (EV_A); 2052 ev_unref (EV_A);
1164 w->active = 0; 2053 w->active = 0;
1165} 2054}
1166 2055
1167/*****************************************************************************/ 2056/*****************************************************************************/
1168 2057
1169void 2058void noinline
1170ev_io_start (EV_P_ struct ev_io *w) 2059ev_io_start (EV_P_ ev_io *w)
1171{ 2060{
1172 int fd = w->fd; 2061 int fd = w->fd;
1173 2062
1174 if (ev_is_active (w)) 2063 if (expect_false (ev_is_active (w)))
1175 return; 2064 return;
1176 2065
1177 assert (("ev_io_start called with negative fd", fd >= 0)); 2066 assert (("ev_io_start called with negative fd", fd >= 0));
1178 2067
2068 EV_FREQUENT_CHECK;
2069
1179 ev_start (EV_A_ (W)w, 1); 2070 ev_start (EV_A_ (W)w, 1);
1180 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2072 wlist_add (&anfds[fd].head, (WL)w);
1182 2073
1183 fd_change (EV_A_ fd); 2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1184} 2075 w->events &= ~EV_IOFDSET;
1185 2076
1186void 2077 EV_FREQUENT_CHECK;
2078}
2079
2080void noinline
1187ev_io_stop (EV_P_ struct ev_io *w) 2081ev_io_stop (EV_P_ ev_io *w)
1188{ 2082{
1189 ev_clear_pending (EV_A_ (W)w); 2083 clear_pending (EV_A_ (W)w);
1190 if (!ev_is_active (w)) 2084 if (expect_false (!ev_is_active (w)))
1191 return; 2085 return;
1192 2086
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088
2089 EV_FREQUENT_CHECK;
2090
1193 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2091 wlist_del (&anfds[w->fd].head, (WL)w);
1194 ev_stop (EV_A_ (W)w); 2092 ev_stop (EV_A_ (W)w);
1195 2093
1196 fd_change (EV_A_ w->fd); 2094 fd_change (EV_A_ w->fd, 1);
1197}
1198 2095
1199void 2096 EV_FREQUENT_CHECK;
2097}
2098
2099void noinline
1200ev_timer_start (EV_P_ struct ev_timer *w) 2100ev_timer_start (EV_P_ ev_timer *w)
1201{ 2101{
1202 if (ev_is_active (w)) 2102 if (expect_false (ev_is_active (w)))
1203 return; 2103 return;
1204 2104
1205 ((WT)w)->at += mn_now; 2105 ev_at (w) += mn_now;
1206 2106
1207 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208 2108
2109 EV_FREQUENT_CHECK;
2110
2111 ++timercnt;
1209 ev_start (EV_A_ (W)w, ++timercnt); 2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1210 array_needsize (timers, timermax, timercnt, ); 2113 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1211 timers [timercnt - 1] = w; 2114 ANHE_w (timers [ev_active (w)]) = (WT)w;
1212 upheap ((WT *)timers, timercnt - 1); 2115 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w));
1213 2117
2118 EV_FREQUENT_CHECK;
2119
1214 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1215} 2121}
1216 2122
1217void 2123void noinline
1218ev_timer_stop (EV_P_ struct ev_timer *w) 2124ev_timer_stop (EV_P_ ev_timer *w)
1219{ 2125{
1220 ev_clear_pending (EV_A_ (W)w); 2126 clear_pending (EV_A_ (W)w);
1221 if (!ev_is_active (w)) 2127 if (expect_false (!ev_is_active (w)))
1222 return; 2128 return;
1223 2129
2130 EV_FREQUENT_CHECK;
2131
2132 {
2133 int active = ev_active (w);
2134
1224 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1225 2136
1226 if (((W)w)->active < timercnt--) 2137 --timercnt;
2138
2139 if (expect_true (active < timercnt + HEAP0))
1227 { 2140 {
1228 timers [((W)w)->active - 1] = timers [timercnt]; 2141 timers [active] = timers [timercnt + HEAP0];
1229 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2142 adjustheap (timers, timercnt, active);
1230 } 2143 }
2144 }
1231 2145
1232 ((WT)w)->at = w->repeat; 2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now;
1233 2149
1234 ev_stop (EV_A_ (W)w); 2150 ev_stop (EV_A_ (W)w);
1235} 2151}
1236 2152
1237void 2153void noinline
1238ev_timer_again (EV_P_ struct ev_timer *w) 2154ev_timer_again (EV_P_ ev_timer *w)
1239{ 2155{
2156 EV_FREQUENT_CHECK;
2157
1240 if (ev_is_active (w)) 2158 if (ev_is_active (w))
1241 { 2159 {
1242 if (w->repeat) 2160 if (w->repeat)
1243 { 2161 {
1244 ((WT)w)->at = mn_now + w->repeat; 2162 ev_at (w) = mn_now + w->repeat;
1245 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2163 ANHE_at_cache (timers [ev_active (w)]);
2164 adjustheap (timers, timercnt, ev_active (w));
1246 } 2165 }
1247 else 2166 else
1248 ev_timer_stop (EV_A_ w); 2167 ev_timer_stop (EV_A_ w);
1249 } 2168 }
1250 else if (w->repeat) 2169 else if (w->repeat)
2170 {
2171 ev_at (w) = w->repeat;
1251 ev_timer_start (EV_A_ w); 2172 ev_timer_start (EV_A_ w);
1252} 2173 }
1253 2174
1254void 2175 EV_FREQUENT_CHECK;
2176}
2177
2178#if EV_PERIODIC_ENABLE
2179void noinline
1255ev_periodic_start (EV_P_ struct ev_periodic *w) 2180ev_periodic_start (EV_P_ ev_periodic *w)
1256{ 2181{
1257 if (ev_is_active (w)) 2182 if (expect_false (ev_is_active (w)))
1258 return; 2183 return;
1259 2184
2185 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval)
2188 {
1260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262 /* this formula differs from the one in periodic_reify because we do not always round up */ 2190 /* this formula differs from the one in periodic_reify because we do not always round up */
1263 if (w->interval)
1264 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 }
2193 else
2194 ev_at (w) = w->offset;
1265 2195
2196 EV_FREQUENT_CHECK;
2197
2198 ++periodiccnt;
1266 ev_start (EV_A_ (W)w, ++periodiccnt); 2199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1267 array_needsize (periodics, periodicmax, periodiccnt, ); 2200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1268 periodics [periodiccnt - 1] = w; 2201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1269 upheap ((WT *)periodics, periodiccnt - 1); 2202 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w));
1270 2204
2205 EV_FREQUENT_CHECK;
2206
1271 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1272} 2208}
1273 2209
1274void 2210void noinline
1275ev_periodic_stop (EV_P_ struct ev_periodic *w) 2211ev_periodic_stop (EV_P_ ev_periodic *w)
1276{ 2212{
1277 ev_clear_pending (EV_A_ (W)w); 2213 clear_pending (EV_A_ (W)w);
1278 if (!ev_is_active (w)) 2214 if (expect_false (!ev_is_active (w)))
1279 return; 2215 return;
1280 2216
2217 EV_FREQUENT_CHECK;
2218
2219 {
2220 int active = ev_active (w);
2221
1281 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1282 2223
1283 if (((W)w)->active < periodiccnt--) 2224 --periodiccnt;
2225
2226 if (expect_true (active < periodiccnt + HEAP0))
1284 { 2227 {
1285 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2228 periodics [active] = periodics [periodiccnt + HEAP0];
1286 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2229 adjustheap (periodics, periodiccnt, active);
1287 } 2230 }
2231 }
2232
2233 EV_FREQUENT_CHECK;
1288 2234
1289 ev_stop (EV_A_ (W)w); 2235 ev_stop (EV_A_ (W)w);
1290} 2236}
1291 2237
1292void 2238void noinline
1293ev_idle_start (EV_P_ struct ev_idle *w) 2239ev_periodic_again (EV_P_ ev_periodic *w)
1294{ 2240{
1295 if (ev_is_active (w)) 2241 /* TODO: use adjustheap and recalculation */
1296 return;
1297
1298 ev_start (EV_A_ (W)w, ++idlecnt);
1299 array_needsize (idles, idlemax, idlecnt, );
1300 idles [idlecnt - 1] = w;
1301}
1302
1303void
1304ev_idle_stop (EV_P_ struct ev_idle *w)
1305{
1306 ev_clear_pending (EV_A_ (W)w);
1307 if (ev_is_active (w))
1308 return;
1309
1310 idles [((W)w)->active - 1] = idles [--idlecnt];
1311 ev_stop (EV_A_ (W)w); 2242 ev_periodic_stop (EV_A_ w);
2243 ev_periodic_start (EV_A_ w);
1312} 2244}
1313 2245#endif
1314void
1315ev_prepare_start (EV_P_ struct ev_prepare *w)
1316{
1317 if (ev_is_active (w))
1318 return;
1319
1320 ev_start (EV_A_ (W)w, ++preparecnt);
1321 array_needsize (prepares, preparemax, preparecnt, );
1322 prepares [preparecnt - 1] = w;
1323}
1324
1325void
1326ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327{
1328 ev_clear_pending (EV_A_ (W)w);
1329 if (ev_is_active (w))
1330 return;
1331
1332 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333 ev_stop (EV_A_ (W)w);
1334}
1335
1336void
1337ev_check_start (EV_P_ struct ev_check *w)
1338{
1339 if (ev_is_active (w))
1340 return;
1341
1342 ev_start (EV_A_ (W)w, ++checkcnt);
1343 array_needsize (checks, checkmax, checkcnt, );
1344 checks [checkcnt - 1] = w;
1345}
1346
1347void
1348ev_check_stop (EV_P_ struct ev_check *w)
1349{
1350 ev_clear_pending (EV_A_ (W)w);
1351 if (ev_is_active (w))
1352 return;
1353
1354 checks [((W)w)->active - 1] = checks [--checkcnt];
1355 ev_stop (EV_A_ (W)w);
1356}
1357 2246
1358#ifndef SA_RESTART 2247#ifndef SA_RESTART
1359# define SA_RESTART 0 2248# define SA_RESTART 0
1360#endif 2249#endif
1361 2250
1362void 2251void noinline
1363ev_signal_start (EV_P_ struct ev_signal *w) 2252ev_signal_start (EV_P_ ev_signal *w)
1364{ 2253{
1365#if EV_MULTIPLICITY 2254#if EV_MULTIPLICITY
1366 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367#endif 2256#endif
1368 if (ev_is_active (w)) 2257 if (expect_false (ev_is_active (w)))
1369 return; 2258 return;
1370 2259
1371 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372 2261
2262 evpipe_init (EV_A);
2263
2264 EV_FREQUENT_CHECK;
2265
2266 {
2267#ifndef _WIN32
2268 sigset_t full, prev;
2269 sigfillset (&full);
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2274
2275#ifndef _WIN32
2276 sigprocmask (SIG_SETMASK, &prev, 0);
2277#endif
2278 }
2279
1373 ev_start (EV_A_ (W)w, 1); 2280 ev_start (EV_A_ (W)w, 1);
1374 array_needsize (signals, signalmax, w->signum, signals_init);
1375 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2281 wlist_add (&signals [w->signum - 1].head, (WL)w);
1376 2282
1377 if (!((WL)w)->next) 2283 if (!((WL)w)->next)
1378 { 2284 {
1379#if WIN32 2285#if _WIN32
1380 signal (w->signum, sighandler); 2286 signal (w->signum, ev_sighandler);
1381#else 2287#else
1382 struct sigaction sa; 2288 struct sigaction sa;
1383 sa.sa_handler = sighandler; 2289 sa.sa_handler = ev_sighandler;
1384 sigfillset (&sa.sa_mask); 2290 sigfillset (&sa.sa_mask);
1385 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1386 sigaction (w->signum, &sa, 0); 2292 sigaction (w->signum, &sa, 0);
1387#endif 2293#endif
1388 } 2294 }
1389}
1390 2295
1391void 2296 EV_FREQUENT_CHECK;
2297}
2298
2299void noinline
1392ev_signal_stop (EV_P_ struct ev_signal *w) 2300ev_signal_stop (EV_P_ ev_signal *w)
1393{ 2301{
1394 ev_clear_pending (EV_A_ (W)w); 2302 clear_pending (EV_A_ (W)w);
1395 if (!ev_is_active (w)) 2303 if (expect_false (!ev_is_active (w)))
1396 return; 2304 return;
1397 2305
2306 EV_FREQUENT_CHECK;
2307
1398 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2308 wlist_del (&signals [w->signum - 1].head, (WL)w);
1399 ev_stop (EV_A_ (W)w); 2309 ev_stop (EV_A_ (W)w);
1400 2310
1401 if (!signals [w->signum - 1].head) 2311 if (!signals [w->signum - 1].head)
1402 signal (w->signum, SIG_DFL); 2312 signal (w->signum, SIG_DFL);
1403}
1404 2313
2314 EV_FREQUENT_CHECK;
2315}
2316
1405void 2317void
1406ev_child_start (EV_P_ struct ev_child *w) 2318ev_child_start (EV_P_ ev_child *w)
1407{ 2319{
1408#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
1409 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410#endif 2322#endif
1411 if (ev_is_active (w)) 2323 if (expect_false (ev_is_active (w)))
1412 return; 2324 return;
1413 2325
2326 EV_FREQUENT_CHECK;
2327
1414 ev_start (EV_A_ (W)w, 1); 2328 ev_start (EV_A_ (W)w, 1);
1415 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2329 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1416}
1417 2330
2331 EV_FREQUENT_CHECK;
2332}
2333
1418void 2334void
1419ev_child_stop (EV_P_ struct ev_child *w) 2335ev_child_stop (EV_P_ ev_child *w)
1420{ 2336{
1421 ev_clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1422 if (ev_is_active (w)) 2338 if (expect_false (!ev_is_active (w)))
1423 return; 2339 return;
1424 2340
2341 EV_FREQUENT_CHECK;
2342
1425 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2343 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1426 ev_stop (EV_A_ (W)w); 2344 ev_stop (EV_A_ (W)w);
2345
2346 EV_FREQUENT_CHECK;
1427} 2347}
2348
2349#if EV_STAT_ENABLE
2350
2351# ifdef _WIN32
2352# undef lstat
2353# define lstat(a,b) _stati64 (a,b)
2354# endif
2355
2356#define DEF_STAT_INTERVAL 5.0074891
2357#define MIN_STAT_INTERVAL 0.1074891
2358
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360
2361#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192
2363
2364static void noinline
2365infy_add (EV_P_ ev_stat *w)
2366{
2367 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2368
2369 if (w->wd < 0)
2370 {
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372
2373 /* monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */
2375 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 {
2378 char path [4096];
2379 strcpy (path, w->path);
2380
2381 do
2382 {
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385
2386 char *pend = strrchr (path, '/');
2387
2388 if (!pend)
2389 break; /* whoops, no '/', complain to your admin */
2390
2391 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 }
2396 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399
2400 if (w->wd >= 0)
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2402}
2403
2404static void noinline
2405infy_del (EV_P_ ev_stat *w)
2406{
2407 int slot;
2408 int wd = w->wd;
2409
2410 if (wd < 0)
2411 return;
2412
2413 w->wd = -2;
2414 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2415 wlist_del (&fs_hash [slot].head, (WL)w);
2416
2417 /* remove this watcher, if others are watching it, they will rearm */
2418 inotify_rm_watch (fs_fd, wd);
2419}
2420
2421static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{
2424 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427 infy_wd (EV_A_ slot, wd, ev);
2428 else
2429 {
2430 WL w_;
2431
2432 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2433 {
2434 ev_stat *w = (ev_stat *)w_;
2435 w_ = w_->next; /* lets us remove this watcher and all before it */
2436
2437 if (w->wd == wd || wd == -1)
2438 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 {
2441 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */
2443 }
2444
2445 stat_timer_cb (EV_A_ &w->timer, 0);
2446 }
2447 }
2448 }
2449}
2450
2451static void
2452infy_cb (EV_P_ ev_io *w, int revents)
2453{
2454 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf));
2458
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461}
2462
2463void inline_size
2464infy_init (EV_P)
2465{
2466 if (fs_fd != -2)
2467 return;
2468
2469 fs_fd = inotify_init ();
2470
2471 if (fs_fd >= 0)
2472 {
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w);
2476 }
2477}
2478
2479void inline_size
2480infy_fork (EV_P)
2481{
2482 int slot;
2483
2484 if (fs_fd < 0)
2485 return;
2486
2487 close (fs_fd);
2488 fs_fd = inotify_init ();
2489
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2491 {
2492 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0;
2494
2495 while (w_)
2496 {
2497 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us add this watcher */
2499
2500 w->wd = -1;
2501
2502 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else
2505 ev_timer_start (EV_A_ &w->timer);
2506 }
2507
2508 }
2509}
2510
2511#endif
2512
2513void
2514ev_stat_stat (EV_P_ ev_stat *w)
2515{
2516 if (lstat (w->path, &w->attr) < 0)
2517 w->attr.st_nlink = 0;
2518 else if (!w->attr.st_nlink)
2519 w->attr.st_nlink = 1;
2520}
2521
2522static void noinline
2523stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524{
2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526
2527 /* we copy this here each the time so that */
2528 /* prev has the old value when the callback gets invoked */
2529 w->prev = w->attr;
2530 ev_stat_stat (EV_A_ w);
2531
2532 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533 if (
2534 w->prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime
2545 ) {
2546 #if EV_USE_INOTIFY
2547 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */
2550 #endif
2551
2552 ev_feed_event (EV_A_ w, EV_STAT);
2553 }
2554}
2555
2556void
2557ev_stat_start (EV_P_ ev_stat *w)
2558{
2559 if (expect_false (ev_is_active (w)))
2560 return;
2561
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w);
2567
2568 if (w->interval < MIN_STAT_INTERVAL)
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2572 ev_set_priority (&w->timer, ev_priority (w));
2573
2574#if EV_USE_INOTIFY
2575 infy_init (EV_A);
2576
2577 if (fs_fd >= 0)
2578 infy_add (EV_A_ w);
2579 else
2580#endif
2581 ev_timer_start (EV_A_ &w->timer);
2582
2583 ev_start (EV_A_ (W)w, 1);
2584
2585 EV_FREQUENT_CHECK;
2586}
2587
2588void
2589ev_stat_stop (EV_P_ ev_stat *w)
2590{
2591 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w)))
2593 return;
2594
2595 EV_FREQUENT_CHECK;
2596
2597#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w);
2599#endif
2600 ev_timer_stop (EV_A_ &w->timer);
2601
2602 ev_stop (EV_A_ (W)w);
2603
2604 EV_FREQUENT_CHECK;
2605}
2606#endif
2607
2608#if EV_IDLE_ENABLE
2609void
2610ev_idle_start (EV_P_ ev_idle *w)
2611{
2612 if (expect_false (ev_is_active (w)))
2613 return;
2614
2615 pri_adjust (EV_A_ (W)w);
2616
2617 EV_FREQUENT_CHECK;
2618
2619 {
2620 int active = ++idlecnt [ABSPRI (w)];
2621
2622 ++idleall;
2623 ev_start (EV_A_ (W)w, active);
2624
2625 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2626 idles [ABSPRI (w)][active - 1] = w;
2627 }
2628
2629 EV_FREQUENT_CHECK;
2630}
2631
2632void
2633ev_idle_stop (EV_P_ ev_idle *w)
2634{
2635 clear_pending (EV_A_ (W)w);
2636 if (expect_false (!ev_is_active (w)))
2637 return;
2638
2639 EV_FREQUENT_CHECK;
2640
2641 {
2642 int active = ev_active (w);
2643
2644 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2645 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2646
2647 ev_stop (EV_A_ (W)w);
2648 --idleall;
2649 }
2650
2651 EV_FREQUENT_CHECK;
2652}
2653#endif
2654
2655void
2656ev_prepare_start (EV_P_ ev_prepare *w)
2657{
2658 if (expect_false (ev_is_active (w)))
2659 return;
2660
2661 EV_FREQUENT_CHECK;
2662
2663 ev_start (EV_A_ (W)w, ++preparecnt);
2664 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2665 prepares [preparecnt - 1] = w;
2666
2667 EV_FREQUENT_CHECK;
2668}
2669
2670void
2671ev_prepare_stop (EV_P_ ev_prepare *w)
2672{
2673 clear_pending (EV_A_ (W)w);
2674 if (expect_false (!ev_is_active (w)))
2675 return;
2676
2677 EV_FREQUENT_CHECK;
2678
2679 {
2680 int active = ev_active (w);
2681
2682 prepares [active - 1] = prepares [--preparecnt];
2683 ev_active (prepares [active - 1]) = active;
2684 }
2685
2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2689}
2690
2691void
2692ev_check_start (EV_P_ ev_check *w)
2693{
2694 if (expect_false (ev_is_active (w)))
2695 return;
2696
2697 EV_FREQUENT_CHECK;
2698
2699 ev_start (EV_A_ (W)w, ++checkcnt);
2700 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2701 checks [checkcnt - 1] = w;
2702
2703 EV_FREQUENT_CHECK;
2704}
2705
2706void
2707ev_check_stop (EV_P_ ev_check *w)
2708{
2709 clear_pending (EV_A_ (W)w);
2710 if (expect_false (!ev_is_active (w)))
2711 return;
2712
2713 EV_FREQUENT_CHECK;
2714
2715 {
2716 int active = ev_active (w);
2717
2718 checks [active - 1] = checks [--checkcnt];
2719 ev_active (checks [active - 1]) = active;
2720 }
2721
2722 ev_stop (EV_A_ (W)w);
2723
2724 EV_FREQUENT_CHECK;
2725}
2726
2727#if EV_EMBED_ENABLE
2728void noinline
2729ev_embed_sweep (EV_P_ ev_embed *w)
2730{
2731 ev_loop (w->other, EVLOOP_NONBLOCK);
2732}
2733
2734static void
2735embed_io_cb (EV_P_ ev_io *io, int revents)
2736{
2737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2738
2739 if (ev_cb (w))
2740 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2741 else
2742 ev_loop (w->other, EVLOOP_NONBLOCK);
2743}
2744
2745static void
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749
2750 {
2751 struct ev_loop *loop = w->other;
2752
2753 while (fdchangecnt)
2754 {
2755 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 }
2758 }
2759}
2760
2761#if 0
2762static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{
2765 ev_idle_stop (EV_A_ idle);
2766}
2767#endif
2768
2769void
2770ev_embed_start (EV_P_ ev_embed *w)
2771{
2772 if (expect_false (ev_is_active (w)))
2773 return;
2774
2775 {
2776 struct ev_loop *loop = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 }
2780
2781 EV_FREQUENT_CHECK;
2782
2783 ev_set_priority (&w->io, ev_priority (w));
2784 ev_io_start (EV_A_ &w->io);
2785
2786 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare);
2789
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791
2792 ev_start (EV_A_ (W)w, 1);
2793
2794 EV_FREQUENT_CHECK;
2795}
2796
2797void
2798ev_embed_stop (EV_P_ ev_embed *w)
2799{
2800 clear_pending (EV_A_ (W)w);
2801 if (expect_false (!ev_is_active (w)))
2802 return;
2803
2804 EV_FREQUENT_CHECK;
2805
2806 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare);
2808
2809 ev_stop (EV_A_ (W)w);
2810
2811 EV_FREQUENT_CHECK;
2812}
2813#endif
2814
2815#if EV_FORK_ENABLE
2816void
2817ev_fork_start (EV_P_ ev_fork *w)
2818{
2819 if (expect_false (ev_is_active (w)))
2820 return;
2821
2822 EV_FREQUENT_CHECK;
2823
2824 ev_start (EV_A_ (W)w, ++forkcnt);
2825 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2826 forks [forkcnt - 1] = w;
2827
2828 EV_FREQUENT_CHECK;
2829}
2830
2831void
2832ev_fork_stop (EV_P_ ev_fork *w)
2833{
2834 clear_pending (EV_A_ (W)w);
2835 if (expect_false (!ev_is_active (w)))
2836 return;
2837
2838 EV_FREQUENT_CHECK;
2839
2840 {
2841 int active = ev_active (w);
2842
2843 forks [active - 1] = forks [--forkcnt];
2844 ev_active (forks [active - 1]) = active;
2845 }
2846
2847 ev_stop (EV_A_ (W)w);
2848
2849 EV_FREQUENT_CHECK;
2850}
2851#endif
2852
2853#if EV_ASYNC_ENABLE
2854void
2855ev_async_start (EV_P_ ev_async *w)
2856{
2857 if (expect_false (ev_is_active (w)))
2858 return;
2859
2860 evpipe_init (EV_A);
2861
2862 EV_FREQUENT_CHECK;
2863
2864 ev_start (EV_A_ (W)w, ++asynccnt);
2865 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2866 asyncs [asynccnt - 1] = w;
2867
2868 EV_FREQUENT_CHECK;
2869}
2870
2871void
2872ev_async_stop (EV_P_ ev_async *w)
2873{
2874 clear_pending (EV_A_ (W)w);
2875 if (expect_false (!ev_is_active (w)))
2876 return;
2877
2878 EV_FREQUENT_CHECK;
2879
2880 {
2881 int active = ev_active (w);
2882
2883 asyncs [active - 1] = asyncs [--asynccnt];
2884 ev_active (asyncs [active - 1]) = active;
2885 }
2886
2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2890}
2891
2892void
2893ev_async_send (EV_P_ ev_async *w)
2894{
2895 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync);
2897}
2898#endif
1428 2899
1429/*****************************************************************************/ 2900/*****************************************************************************/
1430 2901
1431struct ev_once 2902struct ev_once
1432{ 2903{
1433 struct ev_io io; 2904 ev_io io;
1434 struct ev_timer to; 2905 ev_timer to;
1435 void (*cb)(int revents, void *arg); 2906 void (*cb)(int revents, void *arg);
1436 void *arg; 2907 void *arg;
1437}; 2908};
1438 2909
1439static void 2910static void
… …
1448 2919
1449 cb (revents, arg); 2920 cb (revents, arg);
1450} 2921}
1451 2922
1452static void 2923static void
1453once_cb_io (EV_P_ struct ev_io *w, int revents) 2924once_cb_io (EV_P_ ev_io *w, int revents)
1454{ 2925{
1455 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1456} 2927}
1457 2928
1458static void 2929static void
1459once_cb_to (EV_P_ struct ev_timer *w, int revents) 2930once_cb_to (EV_P_ ev_timer *w, int revents)
1460{ 2931{
1461 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1462} 2933}
1463 2934
1464void 2935void
1465ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1466{ 2937{
1467 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2938 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468 2939
1469 if (!once) 2940 if (expect_false (!once))
2941 {
1470 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2942 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471 else 2943 return;
1472 { 2944 }
2945
1473 once->cb = cb; 2946 once->cb = cb;
1474 once->arg = arg; 2947 once->arg = arg;
1475 2948
1476 ev_watcher_init (&once->io, once_cb_io); 2949 ev_init (&once->io, once_cb_io);
1477 if (fd >= 0) 2950 if (fd >= 0)
1478 { 2951 {
1479 ev_io_set (&once->io, fd, events); 2952 ev_io_set (&once->io, fd, events);
1480 ev_io_start (EV_A_ &once->io); 2953 ev_io_start (EV_A_ &once->io);
1481 } 2954 }
1482 2955
1483 ev_watcher_init (&once->to, once_cb_to); 2956 ev_init (&once->to, once_cb_to);
1484 if (timeout >= 0.) 2957 if (timeout >= 0.)
1485 { 2958 {
1486 ev_timer_set (&once->to, timeout, 0.); 2959 ev_timer_set (&once->to, timeout, 0.);
1487 ev_timer_start (EV_A_ &once->to); 2960 ev_timer_start (EV_A_ &once->to);
1488 }
1489 } 2961 }
1490} 2962}
1491 2963
2964#if EV_MULTIPLICITY
2965 #include "ev_wrap.h"
2966#endif
2967
2968#ifdef __cplusplus
2969}
2970#endif
2971

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