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Comparing libev/ev.c (file contents):
Revision 1.164 by root, Fri Dec 7 16:44:10 2007 UTC vs.
Revision 1.278 by root, Tue Jan 6 19:46:56 2009 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) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
50# endif
51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
41# endif 62# endif
42 63
43# if HAVE_CLOCK_GETTIME 64# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 65# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 66# define EV_USE_MONOTONIC 1
… …
51# ifndef EV_USE_MONOTONIC 72# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 73# define EV_USE_MONOTONIC 0
53# endif 74# endif
54# ifndef EV_USE_REALTIME 75# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 76# define EV_USE_REALTIME 0
77# endif
78# endif
79
80# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1
83# else
84# define EV_USE_NANOSLEEP 0
56# endif 85# endif
57# endif 86# endif
58 87
59# ifndef EV_USE_SELECT 88# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 89# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 131# else
103# define EV_USE_INOTIFY 0 132# define EV_USE_INOTIFY 0
104# endif 133# endif
105# endif 134# endif
106 135
136# ifndef EV_USE_EVENTFD
137# if HAVE_EVENTFD
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif
142# endif
143
107#endif 144#endif
108 145
109#include <math.h> 146#include <math.h>
110#include <stdlib.h> 147#include <stdlib.h>
111#include <fcntl.h> 148#include <fcntl.h>
… …
129#ifndef _WIN32 166#ifndef _WIN32
130# include <sys/time.h> 167# include <sys/time.h>
131# include <sys/wait.h> 168# include <sys/wait.h>
132# include <unistd.h> 169# include <unistd.h>
133#else 170#else
171# include <io.h>
134# define WIN32_LEAN_AND_MEAN 172# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 173# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 174# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 175# define EV_SELECT_IS_WINSOCKET 1
138# endif 176# endif
139#endif 177#endif
140 178
141/**/ 179/* this block tries to deduce configuration from header-defined symbols and defaults */
180
181#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1
184# else
185# define EV_USE_CLOCK_SYSCALL 0
186# endif
187#endif
142 188
143#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1
192# else
144# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
194# endif
145#endif 195#endif
146 196
147#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME 0
199#endif
200
201#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1
204# else
205# define EV_USE_NANOSLEEP 0
206# endif
149#endif 207#endif
150 208
151#ifndef EV_USE_SELECT 209#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 210# define EV_USE_SELECT 1
153#endif 211#endif
… …
159# define EV_USE_POLL 1 217# define EV_USE_POLL 1
160# endif 218# endif
161#endif 219#endif
162 220
163#ifndef EV_USE_EPOLL 221#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1
224# else
164# define EV_USE_EPOLL 0 225# define EV_USE_EPOLL 0
226# endif
165#endif 227#endif
166 228
167#ifndef EV_USE_KQUEUE 229#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 230# define EV_USE_KQUEUE 0
169#endif 231#endif
… …
171#ifndef EV_USE_PORT 233#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 234# define EV_USE_PORT 0
173#endif 235#endif
174 236
175#ifndef EV_USE_INOTIFY 237#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1
240# else
176# define EV_USE_INOTIFY 0 241# define EV_USE_INOTIFY 0
242# endif
177#endif 243#endif
178 244
179#ifndef EV_PID_HASHSIZE 245#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 246# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 247# define EV_PID_HASHSIZE 1
… …
190# else 256# else
191# define EV_INOTIFY_HASHSIZE 16 257# define EV_INOTIFY_HASHSIZE 16
192# endif 258# endif
193#endif 259#endif
194 260
195/**/ 261#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1
264# else
265# define EV_USE_EVENTFD 0
266# endif
267#endif
268
269#if 0 /* debugging */
270# define EV_VERIFY 3
271# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1
273#endif
274
275#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL
277#endif
278
279#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL
281#endif
282
283#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL
285#endif
286
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 288
197#ifndef CLOCK_MONOTONIC 289#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 290# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 291# define EV_USE_MONOTONIC 0
200#endif 292#endif
… …
202#ifndef CLOCK_REALTIME 294#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 295# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 296# define EV_USE_REALTIME 0
205#endif 297#endif
206 298
299#if !EV_STAT_ENABLE
300# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0
302#endif
303
304#if !EV_USE_NANOSLEEP
305# ifndef _WIN32
306# include <sys/select.h>
307# endif
308#endif
309
310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
313# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318# endif
319#endif
320
207#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 322# include <winsock.h>
209#endif 323#endif
210 324
211#if !EV_STAT_ENABLE 325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
212# define EV_USE_INOTIFY 0 331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h>
337# ifdef __cplusplus
338extern "C" {
213#endif 339# endif
214 340int eventfd (unsigned int initval, int flags);
215#if EV_USE_INOTIFY 341# ifdef __cplusplus
216# include <sys/inotify.h> 342}
343# endif
217#endif 344#endif
218 345
219/**/ 346/**/
347
348#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
350#else
351# define EV_FREQUENT_CHECK do { } while (0)
352#endif
353
354/*
355 * This is used to avoid floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220 363
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224 367
225#if __GNUC__ >= 3 368#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 369# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline)) 370# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
235#else 371#else
236# define expect(expr,value) (expr) 372# define expect(expr,value) (expr)
237# define inline_speed static
238# define inline_size static
239# define noinline 373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif
240#endif 377#endif
241 378
242#define expect_false(expr) expect ((expr) != 0, 0) 379#define expect_false(expr) expect ((expr) != 0, 0)
243#define expect_true(expr) expect ((expr) != 0, 1) 380#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline
382
383#if EV_MINIMAL
384# define inline_speed static noinline
385#else
386# define inline_speed static inline
387#endif
244 388
245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247 391
248#define EMPTY /* required for microsofts broken pseudo-c compiler */ 392#define EMPTY /* required for microsofts broken pseudo-c compiler */
… …
250 394
251typedef ev_watcher *W; 395typedef ev_watcher *W;
252typedef ev_watcher_list *WL; 396typedef ev_watcher_list *WL;
253typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
254 398
399#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at
401
402#if EV_USE_MONOTONIC
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 405static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
406#endif
256 407
257#ifdef _WIN32 408#ifdef _WIN32
258# include "ev_win32.c" 409# include "ev_win32.c"
259#endif 410#endif
260 411
… …
267{ 418{
268 syserr_cb = cb; 419 syserr_cb = cb;
269} 420}
270 421
271static void noinline 422static void noinline
272syserr (const char *msg) 423ev_syserr (const char *msg)
273{ 424{
274 if (!msg) 425 if (!msg)
275 msg = "(libev) system error"; 426 msg = "(libev) system error";
276 427
277 if (syserr_cb) 428 if (syserr_cb)
… …
281 perror (msg); 432 perror (msg);
282 abort (); 433 abort ();
283 } 434 }
284} 435}
285 436
437static void *
438ev_realloc_emul (void *ptr, long size)
439{
440 /* some systems, notably openbsd and darwin, fail to properly
441 * implement realloc (x, 0) (as required by both ansi c-98 and
442 * the single unix specification, so work around them here.
443 */
444
445 if (size)
446 return realloc (ptr, size);
447
448 free (ptr);
449 return 0;
450}
451
286static void *(*alloc)(void *ptr, long size); 452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287 453
288void 454void
289ev_set_allocator (void *(*cb)(void *ptr, long size)) 455ev_set_allocator (void *(*cb)(void *ptr, long size))
290{ 456{
291 alloc = cb; 457 alloc = cb;
292} 458}
293 459
294inline_speed void * 460inline_speed void *
295ev_realloc (void *ptr, long size) 461ev_realloc (void *ptr, long size)
296{ 462{
297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 463 ptr = alloc (ptr, size);
298 464
299 if (!ptr && size) 465 if (!ptr && size)
300 { 466 {
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302 abort (); 468 abort ();
… …
313typedef struct 479typedef struct
314{ 480{
315 WL head; 481 WL head;
316 unsigned char events; 482 unsigned char events;
317 unsigned char reify; 483 unsigned char reify;
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused;
486#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif
318#if EV_SELECT_IS_WINSOCKET 489#if EV_SELECT_IS_WINSOCKET
319 SOCKET handle; 490 SOCKET handle;
320#endif 491#endif
321} ANFD; 492} ANFD;
322 493
… …
325 W w; 496 W w;
326 int events; 497 int events;
327} ANPENDING; 498} ANPENDING;
328 499
329#if EV_USE_INOTIFY 500#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */
330typedef struct 502typedef struct
331{ 503{
332 WL head; 504 WL head;
333} ANFS; 505} ANFS;
506#endif
507
508/* Heap Entry */
509#if EV_HEAP_CACHE_AT
510 typedef struct {
511 ev_tstamp at;
512 WT w;
513 } ANHE;
514
515 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else
519 typedef WT ANHE;
520
521 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he)
334#endif 524#endif
335 525
336#if EV_MULTIPLICITY 526#if EV_MULTIPLICITY
337 527
338 struct ev_loop 528 struct ev_loop
… …
396{ 586{
397 return ev_rt_now; 587 return ev_rt_now;
398} 588}
399#endif 589#endif
400 590
591void
592ev_sleep (ev_tstamp delay)
593{
594 if (delay > 0.)
595 {
596#if EV_USE_NANOSLEEP
597 struct timespec ts;
598
599 ts.tv_sec = (time_t)delay;
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0);
603#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3));
605#else
606 struct timeval tv;
607
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */
614 select (0, 0, 0, 0, &tv);
615#endif
616 }
617}
618
619/*****************************************************************************/
620
621#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622
401int inline_size 623int inline_size
402array_nextsize (int elem, int cur, int cnt) 624array_nextsize (int elem, int cur, int cnt)
403{ 625{
404 int ncur = cur + 1; 626 int ncur = cur + 1;
405 627
406 do 628 do
407 ncur <<= 1; 629 ncur <<= 1;
408 while (cnt > ncur); 630 while (cnt > ncur);
409 631
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 632 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096) 633 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412 { 634 {
413 ncur *= elem; 635 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 636 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415 ncur = ncur - sizeof (void *) * 4; 637 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem; 638 ncur /= elem;
417 } 639 }
418 640
419 return ncur; 641 return ncur;
420} 642}
421 643
422inline_speed void * 644static noinline void *
423array_realloc (int elem, void *base, int *cur, int cnt) 645array_realloc (int elem, void *base, int *cur, int cnt)
424{ 646{
425 *cur = array_nextsize (elem, *cur, cnt); 647 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur); 648 return ev_realloc (base, elem * *cur);
427} 649}
650
651#define array_init_zero(base,count) \
652 memset ((void *)(base), 0, sizeof (*(base)) * (count))
428 653
429#define array_needsize(type,base,cur,cnt,init) \ 654#define array_needsize(type,base,cur,cnt,init) \
430 if (expect_false ((cnt) > (cur))) \ 655 if (expect_false ((cnt) > (cur))) \
431 { \ 656 { \
432 int ocur_ = (cur); \ 657 int ocur_ = (cur); \
… …
452 677
453void noinline 678void noinline
454ev_feed_event (EV_P_ void *w, int revents) 679ev_feed_event (EV_P_ void *w, int revents)
455{ 680{
456 W w_ = (W)w; 681 W w_ = (W)w;
682 int pri = ABSPRI (w_);
457 683
458 if (expect_false (w_->pending)) 684 if (expect_false (w_->pending))
685 pendings [pri][w_->pending - 1].events |= revents;
686 else
459 { 687 {
688 w_->pending = ++pendingcnt [pri];
689 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
690 pendings [pri][w_->pending - 1].w = w_;
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 691 pendings [pri][w_->pending - 1].events = revents;
461 return;
462 } 692 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468} 693}
469 694
470void inline_size 695void inline_speed
471queue_events (EV_P_ W *events, int eventcnt, int type) 696queue_events (EV_P_ W *events, int eventcnt, int type)
472{ 697{
473 int i; 698 int i;
474 699
475 for (i = 0; i < eventcnt; ++i) 700 for (i = 0; i < eventcnt; ++i)
476 ev_feed_event (EV_A_ events [i], type); 701 ev_feed_event (EV_A_ events [i], type);
477} 702}
478 703
479/*****************************************************************************/ 704/*****************************************************************************/
480 705
481void inline_size
482anfds_init (ANFD *base, int count)
483{
484 while (count--)
485 {
486 base->head = 0;
487 base->events = EV_NONE;
488 base->reify = 0;
489
490 ++base;
491 }
492}
493
494void inline_speed 706void inline_speed
495fd_event (EV_P_ int fd, int revents) 707fd_event (EV_P_ int fd, int revents)
496{ 708{
497 ANFD *anfd = anfds + fd; 709 ANFD *anfd = anfds + fd;
498 ev_io *w; 710 ev_io *w;
… …
507} 719}
508 720
509void 721void
510ev_feed_fd_event (EV_P_ int fd, int revents) 722ev_feed_fd_event (EV_P_ int fd, int revents)
511{ 723{
724 if (fd >= 0 && fd < anfdmax)
512 fd_event (EV_A_ fd, revents); 725 fd_event (EV_A_ fd, revents);
513} 726}
514 727
515void inline_size 728void inline_size
516fd_reify (EV_P) 729fd_reify (EV_P)
517{ 730{
… …
521 { 734 {
522 int fd = fdchanges [i]; 735 int fd = fdchanges [i];
523 ANFD *anfd = anfds + fd; 736 ANFD *anfd = anfds + fd;
524 ev_io *w; 737 ev_io *w;
525 738
526 int events = 0; 739 unsigned char events = 0;
527 740
528 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
529 events |= w->events; 742 events |= (unsigned char)w->events;
530 743
531#if EV_SELECT_IS_WINSOCKET 744#if EV_SELECT_IS_WINSOCKET
532 if (events) 745 if (events)
533 { 746 {
534 unsigned long argp; 747 unsigned long arg;
748 #ifdef EV_FD_TO_WIN32_HANDLE
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750 #else
535 anfd->handle = _get_osfhandle (fd); 751 anfd->handle = _get_osfhandle (fd);
752 #endif
536 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 753 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
537 } 754 }
538#endif 755#endif
539 756
757 {
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
540 anfd->reify = 0; 761 anfd->reify = 0;
541
542 backend_modify (EV_A_ fd, anfd->events, events);
543 anfd->events = events; 762 anfd->events = events;
763
764 if (o_events != events || o_reify & EV_IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events);
766 }
544 } 767 }
545 768
546 fdchangecnt = 0; 769 fdchangecnt = 0;
547} 770}
548 771
549void inline_size 772void inline_size
550fd_change (EV_P_ int fd) 773fd_change (EV_P_ int fd, int flags)
551{ 774{
552 if (expect_false (anfds [fd].reify)) 775 unsigned char reify = anfds [fd].reify;
553 return;
554
555 anfds [fd].reify = 1; 776 anfds [fd].reify |= flags;
556 777
778 if (expect_true (!reify))
779 {
557 ++fdchangecnt; 780 ++fdchangecnt;
558 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559 fdchanges [fdchangecnt - 1] = fd; 782 fdchanges [fdchangecnt - 1] = fd;
783 }
560} 784}
561 785
562void inline_speed 786void inline_speed
563fd_kill (EV_P_ int fd) 787fd_kill (EV_P_ int fd)
564{ 788{
… …
587{ 811{
588 int fd; 812 int fd;
589 813
590 for (fd = 0; fd < anfdmax; ++fd) 814 for (fd = 0; fd < anfdmax; ++fd)
591 if (anfds [fd].events) 815 if (anfds [fd].events)
592 if (!fd_valid (fd) == -1 && errno == EBADF) 816 if (!fd_valid (fd) && errno == EBADF)
593 fd_kill (EV_A_ fd); 817 fd_kill (EV_A_ fd);
594} 818}
595 819
596/* called on ENOMEM in select/poll to kill some fds and retry */ 820/* called on ENOMEM in select/poll to kill some fds and retry */
597static void noinline 821static void noinline
… …
615 839
616 for (fd = 0; fd < anfdmax; ++fd) 840 for (fd = 0; fd < anfdmax; ++fd)
617 if (anfds [fd].events) 841 if (anfds [fd].events)
618 { 842 {
619 anfds [fd].events = 0; 843 anfds [fd].events = 0;
844 anfds [fd].emask = 0;
620 fd_change (EV_A_ fd); 845 fd_change (EV_A_ fd, EV_IOFDSET | 1);
621 } 846 }
622} 847}
623 848
624/*****************************************************************************/ 849/*****************************************************************************/
625 850
851/*
852 * the heap functions want a real array index. array index 0 uis guaranteed to not
853 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
854 * the branching factor of the d-tree.
855 */
856
857/*
858 * at the moment we allow libev the luxury of two heaps,
859 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
860 * which is more cache-efficient.
861 * the difference is about 5% with 50000+ watchers.
862 */
863#if EV_USE_4HEAP
864
865#define DHEAP 4
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k))
869
870/* away from the root */
626void inline_speed 871void inline_speed
627upheap (WT *heap, int k) 872downheap (ANHE *heap, int N, int k)
628{ 873{
629 WT w = heap [k]; 874 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0;
630 876
631 while (k && heap [k >> 1]->at > w->at) 877 for (;;)
632 {
633 heap [k] = heap [k >> 1];
634 ((W)heap [k])->active = k + 1;
635 k >>= 1;
636 } 878 {
879 ev_tstamp minat;
880 ANHE *minpos;
881 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
637 882
883 /* find minimum child */
884 if (expect_true (pos + DHEAP - 1 < E))
885 {
886 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
887 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
888 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
889 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
890 }
891 else if (pos < E)
892 {
893 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
894 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
895 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
896 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
897 }
898 else
899 break;
900
901 if (ANHE_at (he) <= minat)
902 break;
903
904 heap [k] = *minpos;
905 ev_active (ANHE_w (*minpos)) = k;
906
907 k = minpos - heap;
908 }
909
638 heap [k] = w; 910 heap [k] = he;
639 ((W)heap [k])->active = k + 1; 911 ev_active (ANHE_w (he)) = k;
640
641} 912}
642 913
914#else /* 4HEAP */
915
916#define HEAP0 1
917#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p))
919
920/* away from the root */
643void inline_speed 921void inline_speed
644downheap (WT *heap, int N, int k) 922downheap (ANHE *heap, int N, int k)
645{ 923{
646 WT w = heap [k]; 924 ANHE he = heap [k];
647 925
648 while (k < (N >> 1)) 926 for (;;)
649 { 927 {
650 int j = k << 1; 928 int c = k << 1;
651 929
652 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 930 if (c > N + HEAP0 - 1)
653 ++j;
654
655 if (w->at <= heap [j]->at)
656 break; 931 break;
657 932
933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
934 ? 1 : 0;
935
936 if (ANHE_at (he) <= ANHE_at (heap [c]))
937 break;
938
658 heap [k] = heap [j]; 939 heap [k] = heap [c];
659 ((W)heap [k])->active = k + 1; 940 ev_active (ANHE_w (heap [k])) = k;
941
660 k = j; 942 k = c;
661 } 943 }
662 944
663 heap [k] = w; 945 heap [k] = he;
664 ((W)heap [k])->active = k + 1; 946 ev_active (ANHE_w (he)) = k;
947}
948#endif
949
950/* towards the root */
951void inline_speed
952upheap (ANHE *heap, int k)
953{
954 ANHE he = heap [k];
955
956 for (;;)
957 {
958 int p = HPARENT (k);
959
960 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
961 break;
962
963 heap [k] = heap [p];
964 ev_active (ANHE_w (heap [k])) = k;
965 k = p;
966 }
967
968 heap [k] = he;
969 ev_active (ANHE_w (he)) = k;
665} 970}
666 971
667void inline_size 972void inline_size
668adjustheap (WT *heap, int N, int k) 973adjustheap (ANHE *heap, int N, int k)
669{ 974{
975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
670 upheap (heap, k); 976 upheap (heap, k);
977 else
671 downheap (heap, N, k); 978 downheap (heap, N, k);
979}
980
981/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size
983reheap (ANHE *heap, int N)
984{
985 int i;
986
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
988 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
989 for (i = 0; i < N; ++i)
990 upheap (heap, i + HEAP0);
672} 991}
673 992
674/*****************************************************************************/ 993/*****************************************************************************/
675 994
676typedef struct 995typedef struct
677{ 996{
678 WL head; 997 WL head;
679 sig_atomic_t volatile gotsig; 998 EV_ATOMIC_T gotsig;
680} ANSIG; 999} ANSIG;
681 1000
682static ANSIG *signals; 1001static ANSIG *signals;
683static int signalmax; 1002static int signalmax;
684 1003
685static int sigpipe [2]; 1004static EV_ATOMIC_T gotsig;
686static sig_atomic_t volatile gotsig;
687static ev_io sigev;
688 1005
1006/*****************************************************************************/
1007
689void inline_size 1008void inline_speed
690signals_init (ANSIG *base, int count)
691{
692 while (count--)
693 {
694 base->head = 0;
695 base->gotsig = 0;
696
697 ++base;
698 }
699}
700
701static void
702sighandler (int signum)
703{
704#if _WIN32
705 signal (signum, sighandler);
706#endif
707
708 signals [signum - 1].gotsig = 1;
709
710 if (!gotsig)
711 {
712 int old_errno = errno;
713 gotsig = 1;
714 write (sigpipe [1], &signum, 1);
715 errno = old_errno;
716 }
717}
718
719void noinline
720ev_feed_signal_event (EV_P_ int signum)
721{
722 WL w;
723
724#if EV_MULTIPLICITY
725 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726#endif
727
728 --signum;
729
730 if (signum < 0 || signum >= signalmax)
731 return;
732
733 signals [signum].gotsig = 0;
734
735 for (w = signals [signum].head; w; w = w->next)
736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737}
738
739static void
740sigcb (EV_P_ ev_io *iow, int revents)
741{
742 int signum;
743
744 read (sigpipe [0], &revents, 1);
745 gotsig = 0;
746
747 for (signum = signalmax; signum--; )
748 if (signals [signum].gotsig)
749 ev_feed_signal_event (EV_A_ signum + 1);
750}
751
752void inline_size
753fd_intern (int fd) 1009fd_intern (int fd)
754{ 1010{
755#ifdef _WIN32 1011#ifdef _WIN32
756 int arg = 1; 1012 unsigned long arg = 1;
757 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
758#else 1014#else
759 fcntl (fd, F_SETFD, FD_CLOEXEC); 1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
760 fcntl (fd, F_SETFL, O_NONBLOCK); 1016 fcntl (fd, F_SETFL, O_NONBLOCK);
761#endif 1017#endif
762} 1018}
763 1019
764static void noinline 1020static void noinline
765siginit (EV_P) 1021evpipe_init (EV_P)
766{ 1022{
1023 if (!ev_is_active (&pipeev))
1024 {
1025#if EV_USE_EVENTFD
1026 if ((evfd = eventfd (0, 0)) >= 0)
1027 {
1028 evpipe [0] = -1;
1029 fd_intern (evfd);
1030 ev_io_set (&pipeev, evfd, EV_READ);
1031 }
1032 else
1033#endif
1034 {
1035 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe");
1037
767 fd_intern (sigpipe [0]); 1038 fd_intern (evpipe [0]);
768 fd_intern (sigpipe [1]); 1039 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ);
1041 }
769 1042
770 ev_io_set (&sigev, sigpipe [0], EV_READ);
771 ev_io_start (EV_A_ &sigev); 1043 ev_io_start (EV_A_ &pipeev);
772 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1044 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 }
1046}
1047
1048void inline_size
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{
1051 if (!*flag)
1052 {
1053 int old_errno = errno; /* save errno because write might clobber it */
1054
1055 *flag = 1;
1056
1057#if EV_USE_EVENTFD
1058 if (evfd >= 0)
1059 {
1060 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t));
1062 }
1063 else
1064#endif
1065 write (evpipe [1], &old_errno, 1);
1066
1067 errno = old_errno;
1068 }
1069}
1070
1071static void
1072pipecb (EV_P_ ev_io *iow, int revents)
1073{
1074#if EV_USE_EVENTFD
1075 if (evfd >= 0)
1076 {
1077 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t));
1079 }
1080 else
1081#endif
1082 {
1083 char dummy;
1084 read (evpipe [0], &dummy, 1);
1085 }
1086
1087 if (gotsig && ev_is_default_loop (EV_A))
1088 {
1089 int signum;
1090 gotsig = 0;
1091
1092 for (signum = signalmax; signum--; )
1093 if (signals [signum].gotsig)
1094 ev_feed_signal_event (EV_A_ signum + 1);
1095 }
1096
1097#if EV_ASYNC_ENABLE
1098 if (gotasync)
1099 {
1100 int i;
1101 gotasync = 0;
1102
1103 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent)
1105 {
1106 asyncs [i]->sent = 0;
1107 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1108 }
1109 }
1110#endif
773} 1111}
774 1112
775/*****************************************************************************/ 1113/*****************************************************************************/
776 1114
1115static void
1116ev_sighandler (int signum)
1117{
1118#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct;
1120#endif
1121
1122#if _WIN32
1123 signal (signum, ev_sighandler);
1124#endif
1125
1126 signals [signum - 1].gotsig = 1;
1127 evpipe_write (EV_A_ &gotsig);
1128}
1129
1130void noinline
1131ev_feed_signal_event (EV_P_ int signum)
1132{
1133 WL w;
1134
1135#if EV_MULTIPLICITY
1136 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1137#endif
1138
1139 --signum;
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return;
1143
1144 signals [signum].gotsig = 0;
1145
1146 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148}
1149
1150/*****************************************************************************/
1151
777static ev_child *childs [EV_PID_HASHSIZE]; 1152static WL childs [EV_PID_HASHSIZE];
778 1153
779#ifndef _WIN32 1154#ifndef _WIN32
780 1155
781static ev_signal childev; 1156static ev_signal childev;
782 1157
1158#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0
1160#endif
1161
783void inline_speed 1162void inline_speed
784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1163child_reap (EV_P_ int chain, int pid, int status)
785{ 1164{
786 ev_child *w; 1165 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
787 1167
788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 {
789 if (w->pid == pid || !w->pid) 1170 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1)))
790 { 1172 {
791 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
792 w->rpid = pid; 1174 w->rpid = pid;
793 w->rstatus = status; 1175 w->rstatus = status;
794 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1176 ev_feed_event (EV_A_ (W)w, EV_CHILD);
795 } 1177 }
1178 }
796} 1179}
797 1180
798#ifndef WCONTINUED 1181#ifndef WCONTINUED
799# define WCONTINUED 0 1182# define WCONTINUED 0
800#endif 1183#endif
… …
809 if (!WCONTINUED 1192 if (!WCONTINUED
810 || errno != EINVAL 1193 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1194 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return; 1195 return;
813 1196
814 /* make sure we are called again until all childs have been reaped */ 1197 /* make sure we are called again until all children have been reaped */
815 /* we need to do it this way so that the callback gets called before we continue */ 1198 /* we need to do it this way so that the callback gets called before we continue */
816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817 1200
818 child_reap (EV_A_ sw, pid, pid, status); 1201 child_reap (EV_A_ pid, pid, status);
819 if (EV_PID_HASHSIZE > 1) 1202 if (EV_PID_HASHSIZE > 1)
820 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
821} 1204}
822 1205
823#endif 1206#endif
824 1207
825/*****************************************************************************/ 1208/*****************************************************************************/
… …
887 /* kqueue is borked on everything but netbsd apparently */ 1270 /* kqueue is borked on everything but netbsd apparently */
888 /* it usually doesn't work correctly on anything but sockets and pipes */ 1271 /* it usually doesn't work correctly on anything but sockets and pipes */
889 flags &= ~EVBACKEND_KQUEUE; 1272 flags &= ~EVBACKEND_KQUEUE;
890#endif 1273#endif
891#ifdef __APPLE__ 1274#ifdef __APPLE__
892 // flags &= ~EVBACKEND_KQUEUE; for documentation 1275 /* only select works correctly on that "unix-certified" platform */
893 flags &= ~EVBACKEND_POLL; 1276 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1277 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
894#endif 1278#endif
895 1279
896 return flags; 1280 return flags;
897} 1281}
898 1282
899unsigned int 1283unsigned int
900ev_embeddable_backends (void) 1284ev_embeddable_backends (void)
901{ 1285{
902 return EVBACKEND_EPOLL 1286 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
903 | EVBACKEND_KQUEUE 1287
904 | EVBACKEND_PORT; 1288 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1289 /* please fix it and tell me how to detect the fix */
1290 flags &= ~EVBACKEND_EPOLL;
1291
1292 return flags;
905} 1293}
906 1294
907unsigned int 1295unsigned int
908ev_backend (EV_P) 1296ev_backend (EV_P)
909{ 1297{
… …
912 1300
913unsigned int 1301unsigned int
914ev_loop_count (EV_P) 1302ev_loop_count (EV_P)
915{ 1303{
916 return loop_count; 1304 return loop_count;
1305}
1306
1307void
1308ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1309{
1310 io_blocktime = interval;
1311}
1312
1313void
1314ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1315{
1316 timeout_blocktime = interval;
917} 1317}
918 1318
919static void noinline 1319static void noinline
920loop_init (EV_P_ unsigned int flags) 1320loop_init (EV_P_ unsigned int flags)
921{ 1321{
… …
927 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1327 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928 have_monotonic = 1; 1328 have_monotonic = 1;
929 } 1329 }
930#endif 1330#endif
931 1331
932 ev_rt_now = ev_time (); 1332 ev_rt_now = ev_time ();
933 mn_now = get_clock (); 1333 mn_now = get_clock ();
934 now_floor = mn_now; 1334 now_floor = mn_now;
935 rtmn_diff = ev_rt_now - mn_now; 1335 rtmn_diff = ev_rt_now - mn_now;
1336
1337 io_blocktime = 0.;
1338 timeout_blocktime = 0.;
1339 backend = 0;
1340 backend_fd = -1;
1341 gotasync = 0;
1342#if EV_USE_INOTIFY
1343 fs_fd = -2;
1344#endif
936 1345
937 /* pid check not overridable via env */ 1346 /* pid check not overridable via env */
938#ifndef _WIN32 1347#ifndef _WIN32
939 if (flags & EVFLAG_FORKCHECK) 1348 if (flags & EVFLAG_FORKCHECK)
940 curpid = getpid (); 1349 curpid = getpid ();
… …
943 if (!(flags & EVFLAG_NOENV) 1352 if (!(flags & EVFLAG_NOENV)
944 && !enable_secure () 1353 && !enable_secure ()
945 && getenv ("LIBEV_FLAGS")) 1354 && getenv ("LIBEV_FLAGS"))
946 flags = atoi (getenv ("LIBEV_FLAGS")); 1355 flags = atoi (getenv ("LIBEV_FLAGS"));
947 1356
948 if (!(flags & 0x0000ffffUL)) 1357 if (!(flags & 0x0000ffffU))
949 flags |= ev_recommended_backends (); 1358 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
953#if EV_USE_INOTIFY
954 fs_fd = -2;
955#endif
956 1359
957#if EV_USE_PORT 1360#if EV_USE_PORT
958 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1361 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959#endif 1362#endif
960#if EV_USE_KQUEUE 1363#if EV_USE_KQUEUE
… …
968#endif 1371#endif
969#if EV_USE_SELECT 1372#if EV_USE_SELECT
970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1373 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971#endif 1374#endif
972 1375
973 ev_init (&sigev, sigcb); 1376 ev_init (&pipeev, pipecb);
974 ev_set_priority (&sigev, EV_MAXPRI); 1377 ev_set_priority (&pipeev, EV_MAXPRI);
975 } 1378 }
976} 1379}
977 1380
978static void noinline 1381static void noinline
979loop_destroy (EV_P) 1382loop_destroy (EV_P)
980{ 1383{
981 int i; 1384 int i;
1385
1386 if (ev_is_active (&pipeev))
1387 {
1388 ev_ref (EV_A); /* signal watcher */
1389 ev_io_stop (EV_A_ &pipeev);
1390
1391#if EV_USE_EVENTFD
1392 if (evfd >= 0)
1393 close (evfd);
1394#endif
1395
1396 if (evpipe [0] >= 0)
1397 {
1398 close (evpipe [0]);
1399 close (evpipe [1]);
1400 }
1401 }
982 1402
983#if EV_USE_INOTIFY 1403#if EV_USE_INOTIFY
984 if (fs_fd >= 0) 1404 if (fs_fd >= 0)
985 close (fs_fd); 1405 close (fs_fd);
986#endif 1406#endif
… …
1009 array_free (pending, [i]); 1429 array_free (pending, [i]);
1010#if EV_IDLE_ENABLE 1430#if EV_IDLE_ENABLE
1011 array_free (idle, [i]); 1431 array_free (idle, [i]);
1012#endif 1432#endif
1013 } 1433 }
1434
1435 ev_free (anfds); anfdmax = 0;
1014 1436
1015 /* have to use the microsoft-never-gets-it-right macro */ 1437 /* have to use the microsoft-never-gets-it-right macro */
1016 array_free (fdchange, EMPTY); 1438 array_free (fdchange, EMPTY);
1017 array_free (timer, EMPTY); 1439 array_free (timer, EMPTY);
1018#if EV_PERIODIC_ENABLE 1440#if EV_PERIODIC_ENABLE
1019 array_free (periodic, EMPTY); 1441 array_free (periodic, EMPTY);
1020#endif 1442#endif
1443#if EV_FORK_ENABLE
1444 array_free (fork, EMPTY);
1445#endif
1021 array_free (prepare, EMPTY); 1446 array_free (prepare, EMPTY);
1022 array_free (check, EMPTY); 1447 array_free (check, EMPTY);
1448#if EV_ASYNC_ENABLE
1449 array_free (async, EMPTY);
1450#endif
1023 1451
1024 backend = 0; 1452 backend = 0;
1025} 1453}
1026 1454
1455#if EV_USE_INOTIFY
1027void inline_size infy_fork (EV_P); 1456void inline_size infy_fork (EV_P);
1457#endif
1028 1458
1029void inline_size 1459void inline_size
1030loop_fork (EV_P) 1460loop_fork (EV_P)
1031{ 1461{
1032#if EV_USE_PORT 1462#if EV_USE_PORT
… …
1040#endif 1470#endif
1041#if EV_USE_INOTIFY 1471#if EV_USE_INOTIFY
1042 infy_fork (EV_A); 1472 infy_fork (EV_A);
1043#endif 1473#endif
1044 1474
1045 if (ev_is_active (&sigev)) 1475 if (ev_is_active (&pipeev))
1046 { 1476 {
1047 /* default loop */ 1477 /* this "locks" the handlers against writing to the pipe */
1478 /* while we modify the fd vars */
1479 gotsig = 1;
1480#if EV_ASYNC_ENABLE
1481 gotasync = 1;
1482#endif
1048 1483
1049 ev_ref (EV_A); 1484 ev_ref (EV_A);
1050 ev_io_stop (EV_A_ &sigev); 1485 ev_io_stop (EV_A_ &pipeev);
1486
1487#if EV_USE_EVENTFD
1488 if (evfd >= 0)
1489 close (evfd);
1490#endif
1491
1492 if (evpipe [0] >= 0)
1493 {
1051 close (sigpipe [0]); 1494 close (evpipe [0]);
1052 close (sigpipe [1]); 1495 close (evpipe [1]);
1496 }
1053 1497
1054 while (pipe (sigpipe))
1055 syserr ("(libev) error creating pipe");
1056
1057 siginit (EV_A); 1498 evpipe_init (EV_A);
1499 /* now iterate over everything, in case we missed something */
1500 pipecb (EV_A_ &pipeev, EV_READ);
1058 } 1501 }
1059 1502
1060 postfork = 0; 1503 postfork = 0;
1061} 1504}
1062 1505
1063#if EV_MULTIPLICITY 1506#if EV_MULTIPLICITY
1507
1064struct ev_loop * 1508struct ev_loop *
1065ev_loop_new (unsigned int flags) 1509ev_loop_new (unsigned int flags)
1066{ 1510{
1067 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1511 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1068 1512
… …
1084} 1528}
1085 1529
1086void 1530void
1087ev_loop_fork (EV_P) 1531ev_loop_fork (EV_P)
1088{ 1532{
1089 postfork = 1; 1533 postfork = 1; /* must be in line with ev_default_fork */
1090} 1534}
1091 1535
1536#if EV_VERIFY
1537static void noinline
1538verify_watcher (EV_P_ W w)
1539{
1540 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1541
1542 if (w->pending)
1543 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1544}
1545
1546static void noinline
1547verify_heap (EV_P_ ANHE *heap, int N)
1548{
1549 int i;
1550
1551 for (i = HEAP0; i < N + HEAP0; ++i)
1552 {
1553 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1554 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1555 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1556
1557 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1558 }
1559}
1560
1561static void noinline
1562array_verify (EV_P_ W *ws, int cnt)
1563{
1564 while (cnt--)
1565 {
1566 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1567 verify_watcher (EV_A_ ws [cnt]);
1568 }
1569}
1570#endif
1571
1572void
1573ev_loop_verify (EV_P)
1574{
1575#if EV_VERIFY
1576 int i;
1577 WL w;
1578
1579 assert (activecnt >= -1);
1580
1581 assert (fdchangemax >= fdchangecnt);
1582 for (i = 0; i < fdchangecnt; ++i)
1583 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1584
1585 assert (anfdmax >= 0);
1586 for (i = 0; i < anfdmax; ++i)
1587 for (w = anfds [i].head; w; w = w->next)
1588 {
1589 verify_watcher (EV_A_ (W)w);
1590 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1591 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1592 }
1593
1594 assert (timermax >= timercnt);
1595 verify_heap (EV_A_ timers, timercnt);
1596
1597#if EV_PERIODIC_ENABLE
1598 assert (periodicmax >= periodiccnt);
1599 verify_heap (EV_A_ periodics, periodiccnt);
1600#endif
1601
1602 for (i = NUMPRI; i--; )
1603 {
1604 assert (pendingmax [i] >= pendingcnt [i]);
1605#if EV_IDLE_ENABLE
1606 assert (idleall >= 0);
1607 assert (idlemax [i] >= idlecnt [i]);
1608 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1609#endif
1610 }
1611
1612#if EV_FORK_ENABLE
1613 assert (forkmax >= forkcnt);
1614 array_verify (EV_A_ (W *)forks, forkcnt);
1615#endif
1616
1617#if EV_ASYNC_ENABLE
1618 assert (asyncmax >= asynccnt);
1619 array_verify (EV_A_ (W *)asyncs, asynccnt);
1620#endif
1621
1622 assert (preparemax >= preparecnt);
1623 array_verify (EV_A_ (W *)prepares, preparecnt);
1624
1625 assert (checkmax >= checkcnt);
1626 array_verify (EV_A_ (W *)checks, checkcnt);
1627
1628# if 0
1629 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1630 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1092#endif 1631# endif
1632#endif
1633}
1634
1635#endif /* multiplicity */
1093 1636
1094#if EV_MULTIPLICITY 1637#if EV_MULTIPLICITY
1095struct ev_loop * 1638struct ev_loop *
1096ev_default_loop_init (unsigned int flags) 1639ev_default_loop_init (unsigned int flags)
1097#else 1640#else
1098int 1641int
1099ev_default_loop (unsigned int flags) 1642ev_default_loop (unsigned int flags)
1100#endif 1643#endif
1101{ 1644{
1102 if (sigpipe [0] == sigpipe [1])
1103 if (pipe (sigpipe))
1104 return 0;
1105
1106 if (!ev_default_loop_ptr) 1645 if (!ev_default_loop_ptr)
1107 { 1646 {
1108#if EV_MULTIPLICITY 1647#if EV_MULTIPLICITY
1109 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1648 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1110#else 1649#else
… …
1113 1652
1114 loop_init (EV_A_ flags); 1653 loop_init (EV_A_ flags);
1115 1654
1116 if (ev_backend (EV_A)) 1655 if (ev_backend (EV_A))
1117 { 1656 {
1118 siginit (EV_A);
1119
1120#ifndef _WIN32 1657#ifndef _WIN32
1121 ev_signal_init (&childev, childcb, SIGCHLD); 1658 ev_signal_init (&childev, childcb, SIGCHLD);
1122 ev_set_priority (&childev, EV_MAXPRI); 1659 ev_set_priority (&childev, EV_MAXPRI);
1123 ev_signal_start (EV_A_ &childev); 1660 ev_signal_start (EV_A_ &childev);
1124 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1661 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1136{ 1673{
1137#if EV_MULTIPLICITY 1674#if EV_MULTIPLICITY
1138 struct ev_loop *loop = ev_default_loop_ptr; 1675 struct ev_loop *loop = ev_default_loop_ptr;
1139#endif 1676#endif
1140 1677
1678 ev_default_loop_ptr = 0;
1679
1141#ifndef _WIN32 1680#ifndef _WIN32
1142 ev_ref (EV_A); /* child watcher */ 1681 ev_ref (EV_A); /* child watcher */
1143 ev_signal_stop (EV_A_ &childev); 1682 ev_signal_stop (EV_A_ &childev);
1144#endif 1683#endif
1145 1684
1146 ev_ref (EV_A); /* signal watcher */
1147 ev_io_stop (EV_A_ &sigev);
1148
1149 close (sigpipe [0]); sigpipe [0] = 0;
1150 close (sigpipe [1]); sigpipe [1] = 0;
1151
1152 loop_destroy (EV_A); 1685 loop_destroy (EV_A);
1153} 1686}
1154 1687
1155void 1688void
1156ev_default_fork (void) 1689ev_default_fork (void)
1157{ 1690{
1158#if EV_MULTIPLICITY 1691#if EV_MULTIPLICITY
1159 struct ev_loop *loop = ev_default_loop_ptr; 1692 struct ev_loop *loop = ev_default_loop_ptr;
1160#endif 1693#endif
1161 1694
1162 if (backend) 1695 postfork = 1; /* must be in line with ev_loop_fork */
1163 postfork = 1;
1164} 1696}
1165 1697
1166/*****************************************************************************/ 1698/*****************************************************************************/
1699
1700void
1701ev_invoke (EV_P_ void *w, int revents)
1702{
1703 EV_CB_INVOKE ((W)w, revents);
1704}
1167 1705
1168void inline_speed 1706void inline_speed
1169call_pending (EV_P) 1707call_pending (EV_P)
1170{ 1708{
1171 int pri; 1709 int pri;
… …
1175 { 1713 {
1176 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1714 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1177 1715
1178 if (expect_true (p->w)) 1716 if (expect_true (p->w))
1179 { 1717 {
1180 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1718 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1181 1719
1182 p->w->pending = 0; 1720 p->w->pending = 0;
1183 EV_CB_INVOKE (p->w, p->events); 1721 EV_CB_INVOKE (p->w, p->events);
1722 EV_FREQUENT_CHECK;
1184 } 1723 }
1185 } 1724 }
1186} 1725}
1187
1188void inline_size
1189timers_reify (EV_P)
1190{
1191 while (timercnt && ((WT)timers [0])->at <= mn_now)
1192 {
1193 ev_timer *w = timers [0];
1194
1195 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1196
1197 /* first reschedule or stop timer */
1198 if (w->repeat)
1199 {
1200 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1201
1202 ((WT)w)->at += w->repeat;
1203 if (((WT)w)->at < mn_now)
1204 ((WT)w)->at = mn_now;
1205
1206 downheap ((WT *)timers, timercnt, 0);
1207 }
1208 else
1209 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1210
1211 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1212 }
1213}
1214
1215#if EV_PERIODIC_ENABLE
1216void inline_size
1217periodics_reify (EV_P)
1218{
1219 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1220 {
1221 ev_periodic *w = periodics [0];
1222
1223 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1224
1225 /* first reschedule or stop timer */
1226 if (w->reschedule_cb)
1227 {
1228 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1229 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1230 downheap ((WT *)periodics, periodiccnt, 0);
1231 }
1232 else if (w->interval)
1233 {
1234 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1235 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1236 downheap ((WT *)periodics, periodiccnt, 0);
1237 }
1238 else
1239 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1240
1241 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1242 }
1243}
1244
1245static void noinline
1246periodics_reschedule (EV_P)
1247{
1248 int i;
1249
1250 /* adjust periodics after time jump */
1251 for (i = 0; i < periodiccnt; ++i)
1252 {
1253 ev_periodic *w = periodics [i];
1254
1255 if (w->reschedule_cb)
1256 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1257 else if (w->interval)
1258 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1259 }
1260
1261 /* now rebuild the heap */
1262 for (i = periodiccnt >> 1; i--; )
1263 downheap ((WT *)periodics, periodiccnt, i);
1264}
1265#endif
1266 1726
1267#if EV_IDLE_ENABLE 1727#if EV_IDLE_ENABLE
1268void inline_size 1728void inline_size
1269idle_reify (EV_P) 1729idle_reify (EV_P)
1270{ 1730{
1271 if (expect_false (!idleall)) 1731 if (expect_false (idleall))
1272 { 1732 {
1273 int pri; 1733 int pri;
1274 1734
1275 for (pri = NUMPRI; pri--; ) 1735 for (pri = NUMPRI; pri--; )
1276 { 1736 {
… …
1285 } 1745 }
1286 } 1746 }
1287} 1747}
1288#endif 1748#endif
1289 1749
1290int inline_size 1750void inline_size
1291time_update_monotonic (EV_P) 1751timers_reify (EV_P)
1292{ 1752{
1753 EV_FREQUENT_CHECK;
1754
1755 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1756 {
1757 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1758
1759 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1760
1761 /* first reschedule or stop timer */
1762 if (w->repeat)
1763 {
1764 ev_at (w) += w->repeat;
1765 if (ev_at (w) < mn_now)
1766 ev_at (w) = mn_now;
1767
1768 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1769
1770 ANHE_at_cache (timers [HEAP0]);
1771 downheap (timers, timercnt, HEAP0);
1772 }
1773 else
1774 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1775
1776 EV_FREQUENT_CHECK;
1777 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1778 }
1779}
1780
1781#if EV_PERIODIC_ENABLE
1782void inline_size
1783periodics_reify (EV_P)
1784{
1785 EV_FREQUENT_CHECK;
1786
1787 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1788 {
1789 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1790
1791 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1792
1793 /* first reschedule or stop timer */
1794 if (w->reschedule_cb)
1795 {
1796 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1797
1798 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1799
1800 ANHE_at_cache (periodics [HEAP0]);
1801 downheap (periodics, periodiccnt, HEAP0);
1802 }
1803 else if (w->interval)
1804 {
1805 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1806 /* if next trigger time is not sufficiently in the future, put it there */
1807 /* this might happen because of floating point inexactness */
1808 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1809 {
1810 ev_at (w) += w->interval;
1811
1812 /* if interval is unreasonably low we might still have a time in the past */
1813 /* so correct this. this will make the periodic very inexact, but the user */
1814 /* has effectively asked to get triggered more often than possible */
1815 if (ev_at (w) < ev_rt_now)
1816 ev_at (w) = ev_rt_now;
1817 }
1818
1819 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0);
1821 }
1822 else
1823 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1824
1825 EV_FREQUENT_CHECK;
1826 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1827 }
1828}
1829
1830static void noinline
1831periodics_reschedule (EV_P)
1832{
1833 int i;
1834
1835 /* adjust periodics after time jump */
1836 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1837 {
1838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1839
1840 if (w->reschedule_cb)
1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1842 else if (w->interval)
1843 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1844
1845 ANHE_at_cache (periodics [i]);
1846 }
1847
1848 reheap (periodics, periodiccnt);
1849}
1850#endif
1851
1852void inline_speed
1853time_update (EV_P_ ev_tstamp max_block)
1854{
1855 int i;
1856
1857#if EV_USE_MONOTONIC
1858 if (expect_true (have_monotonic))
1859 {
1860 ev_tstamp odiff = rtmn_diff;
1861
1293 mn_now = get_clock (); 1862 mn_now = get_clock ();
1294 1863
1864 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1865 /* interpolate in the meantime */
1295 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1866 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1296 { 1867 {
1297 ev_rt_now = rtmn_diff + mn_now; 1868 ev_rt_now = rtmn_diff + mn_now;
1298 return 0; 1869 return;
1299 } 1870 }
1300 else 1871
1301 {
1302 now_floor = mn_now; 1872 now_floor = mn_now;
1303 ev_rt_now = ev_time (); 1873 ev_rt_now = ev_time ();
1304 return 1;
1305 }
1306}
1307 1874
1308void inline_size 1875 /* loop a few times, before making important decisions.
1309time_update (EV_P) 1876 * on the choice of "4": one iteration isn't enough,
1310{ 1877 * in case we get preempted during the calls to
1311 int i; 1878 * ev_time and get_clock. a second call is almost guaranteed
1312 1879 * to succeed in that case, though. and looping a few more times
1313#if EV_USE_MONOTONIC 1880 * doesn't hurt either as we only do this on time-jumps or
1314 if (expect_true (have_monotonic)) 1881 * in the unlikely event of having been preempted here.
1315 { 1882 */
1316 if (time_update_monotonic (EV_A)) 1883 for (i = 4; --i; )
1317 { 1884 {
1318 ev_tstamp odiff = rtmn_diff;
1319
1320 /* loop a few times, before making important decisions.
1321 * on the choice of "4": one iteration isn't enough,
1322 * in case we get preempted during the calls to
1323 * ev_time and get_clock. a second call is almost guaranteed
1324 * to succeed in that case, though. and looping a few more times
1325 * doesn't hurt either as we only do this on time-jumps or
1326 * in the unlikely event of having been preempted here.
1327 */
1328 for (i = 4; --i; )
1329 {
1330 rtmn_diff = ev_rt_now - mn_now; 1885 rtmn_diff = ev_rt_now - mn_now;
1331 1886
1332 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1887 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1333 return; /* all is well */ 1888 return; /* all is well */
1334 1889
1335 ev_rt_now = ev_time (); 1890 ev_rt_now = ev_time ();
1336 mn_now = get_clock (); 1891 mn_now = get_clock ();
1337 now_floor = mn_now; 1892 now_floor = mn_now;
1338 } 1893 }
1339 1894
1340# if EV_PERIODIC_ENABLE 1895# if EV_PERIODIC_ENABLE
1341 periodics_reschedule (EV_A); 1896 periodics_reschedule (EV_A);
1342# endif 1897# endif
1343 /* no timer adjustment, as the monotonic clock doesn't jump */ 1898 /* no timer adjustment, as the monotonic clock doesn't jump */
1344 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1899 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1345 }
1346 } 1900 }
1347 else 1901 else
1348#endif 1902#endif
1349 { 1903 {
1350 ev_rt_now = ev_time (); 1904 ev_rt_now = ev_time ();
1351 1905
1352 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1906 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1353 { 1907 {
1354#if EV_PERIODIC_ENABLE 1908#if EV_PERIODIC_ENABLE
1355 periodics_reschedule (EV_A); 1909 periodics_reschedule (EV_A);
1356#endif 1910#endif
1357
1358 /* adjust timers. this is easy, as the offset is the same for all of them */ 1911 /* adjust timers. this is easy, as the offset is the same for all of them */
1359 for (i = 0; i < timercnt; ++i) 1912 for (i = 0; i < timercnt; ++i)
1913 {
1914 ANHE *he = timers + i + HEAP0;
1360 ((WT)timers [i])->at += ev_rt_now - mn_now; 1915 ANHE_w (*he)->at += ev_rt_now - mn_now;
1916 ANHE_at_cache (*he);
1917 }
1361 } 1918 }
1362 1919
1363 mn_now = ev_rt_now; 1920 mn_now = ev_rt_now;
1364 } 1921 }
1365} 1922}
… …
1374ev_unref (EV_P) 1931ev_unref (EV_P)
1375{ 1932{
1376 --activecnt; 1933 --activecnt;
1377} 1934}
1378 1935
1936void
1937ev_now_update (EV_P)
1938{
1939 time_update (EV_A_ 1e100);
1940}
1941
1379static int loop_done; 1942static int loop_done;
1380 1943
1381void 1944void
1382ev_loop (EV_P_ int flags) 1945ev_loop (EV_P_ int flags)
1383{ 1946{
1384 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1947 loop_done = EVUNLOOP_CANCEL;
1385 ? EVUNLOOP_ONE
1386 : EVUNLOOP_CANCEL;
1387 1948
1388 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1949 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1389 1950
1390 do 1951 do
1391 { 1952 {
1953#if EV_VERIFY >= 2
1954 ev_loop_verify (EV_A);
1955#endif
1956
1392#ifndef _WIN32 1957#ifndef _WIN32
1393 if (expect_false (curpid)) /* penalise the forking check even more */ 1958 if (expect_false (curpid)) /* penalise the forking check even more */
1394 if (expect_false (getpid () != curpid)) 1959 if (expect_false (getpid () != curpid))
1395 { 1960 {
1396 curpid = getpid (); 1961 curpid = getpid ();
… …
1406 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1971 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1407 call_pending (EV_A); 1972 call_pending (EV_A);
1408 } 1973 }
1409#endif 1974#endif
1410 1975
1411 /* queue check watchers (and execute them) */ 1976 /* queue prepare watchers (and execute them) */
1412 if (expect_false (preparecnt)) 1977 if (expect_false (preparecnt))
1413 { 1978 {
1414 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1415 call_pending (EV_A); 1980 call_pending (EV_A);
1416 } 1981 }
… …
1425 /* update fd-related kernel structures */ 1990 /* update fd-related kernel structures */
1426 fd_reify (EV_A); 1991 fd_reify (EV_A);
1427 1992
1428 /* calculate blocking time */ 1993 /* calculate blocking time */
1429 { 1994 {
1430 ev_tstamp block; 1995 ev_tstamp waittime = 0.;
1996 ev_tstamp sleeptime = 0.;
1431 1997
1432 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1998 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1433 block = 0.; /* do not block at all */
1434 else
1435 { 1999 {
1436 /* update time to cancel out callback processing overhead */ 2000 /* update time to cancel out callback processing overhead */
1437#if EV_USE_MONOTONIC
1438 if (expect_true (have_monotonic))
1439 time_update_monotonic (EV_A); 2001 time_update (EV_A_ 1e100);
1440 else
1441#endif
1442 {
1443 ev_rt_now = ev_time ();
1444 mn_now = ev_rt_now;
1445 }
1446 2002
1447 block = MAX_BLOCKTIME; 2003 waittime = MAX_BLOCKTIME;
1448 2004
1449 if (timercnt) 2005 if (timercnt)
1450 { 2006 {
1451 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2007 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1452 if (block > to) block = to; 2008 if (waittime > to) waittime = to;
1453 } 2009 }
1454 2010
1455#if EV_PERIODIC_ENABLE 2011#if EV_PERIODIC_ENABLE
1456 if (periodiccnt) 2012 if (periodiccnt)
1457 { 2013 {
1458 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2014 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1459 if (block > to) block = to; 2015 if (waittime > to) waittime = to;
1460 } 2016 }
1461#endif 2017#endif
1462 2018
1463 if (expect_false (block < 0.)) block = 0.; 2019 if (expect_false (waittime < timeout_blocktime))
2020 waittime = timeout_blocktime;
2021
2022 sleeptime = waittime - backend_fudge;
2023
2024 if (expect_true (sleeptime > io_blocktime))
2025 sleeptime = io_blocktime;
2026
2027 if (sleeptime)
2028 {
2029 ev_sleep (sleeptime);
2030 waittime -= sleeptime;
2031 }
1464 } 2032 }
1465 2033
1466 ++loop_count; 2034 ++loop_count;
1467 backend_poll (EV_A_ block); 2035 backend_poll (EV_A_ waittime);
2036
2037 /* update ev_rt_now, do magic */
2038 time_update (EV_A_ waittime + sleeptime);
1468 } 2039 }
1469
1470 /* update ev_rt_now, do magic */
1471 time_update (EV_A);
1472 2040
1473 /* queue pending timers and reschedule them */ 2041 /* queue pending timers and reschedule them */
1474 timers_reify (EV_A); /* relative timers called last */ 2042 timers_reify (EV_A); /* relative timers called last */
1475#if EV_PERIODIC_ENABLE 2043#if EV_PERIODIC_ENABLE
1476 periodics_reify (EV_A); /* absolute timers called first */ 2044 periodics_reify (EV_A); /* absolute timers called first */
… …
1484 /* queue check watchers, to be executed first */ 2052 /* queue check watchers, to be executed first */
1485 if (expect_false (checkcnt)) 2053 if (expect_false (checkcnt))
1486 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1487 2055
1488 call_pending (EV_A); 2056 call_pending (EV_A);
1489
1490 } 2057 }
1491 while (expect_true (activecnt && !loop_done)); 2058 while (expect_true (
2059 activecnt
2060 && !loop_done
2061 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2062 ));
1492 2063
1493 if (loop_done == EVUNLOOP_ONE) 2064 if (loop_done == EVUNLOOP_ONE)
1494 loop_done = EVUNLOOP_CANCEL; 2065 loop_done = EVUNLOOP_CANCEL;
1495} 2066}
1496 2067
… …
1523 head = &(*head)->next; 2094 head = &(*head)->next;
1524 } 2095 }
1525} 2096}
1526 2097
1527void inline_speed 2098void inline_speed
1528ev_clear_pending (EV_P_ W w) 2099clear_pending (EV_P_ W w)
1529{ 2100{
1530 if (w->pending) 2101 if (w->pending)
1531 { 2102 {
1532 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2103 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1533 w->pending = 0; 2104 w->pending = 0;
1534 } 2105 }
2106}
2107
2108int
2109ev_clear_pending (EV_P_ void *w)
2110{
2111 W w_ = (W)w;
2112 int pending = w_->pending;
2113
2114 if (expect_true (pending))
2115 {
2116 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2117 w_->pending = 0;
2118 p->w = 0;
2119 return p->events;
2120 }
2121 else
2122 return 0;
1535} 2123}
1536 2124
1537void inline_size 2125void inline_size
1538pri_adjust (EV_P_ W w) 2126pri_adjust (EV_P_ W w)
1539{ 2127{
… …
1558 w->active = 0; 2146 w->active = 0;
1559} 2147}
1560 2148
1561/*****************************************************************************/ 2149/*****************************************************************************/
1562 2150
1563void 2151void noinline
1564ev_io_start (EV_P_ ev_io *w) 2152ev_io_start (EV_P_ ev_io *w)
1565{ 2153{
1566 int fd = w->fd; 2154 int fd = w->fd;
1567 2155
1568 if (expect_false (ev_is_active (w))) 2156 if (expect_false (ev_is_active (w)))
1569 return; 2157 return;
1570 2158
1571 assert (("ev_io_start called with negative fd", fd >= 0)); 2159 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2160 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
2161
2162 EV_FREQUENT_CHECK;
1572 2163
1573 ev_start (EV_A_ (W)w, 1); 2164 ev_start (EV_A_ (W)w, 1);
1574 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2165 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1575 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2166 wlist_add (&anfds[fd].head, (WL)w);
1576 2167
1577 fd_change (EV_A_ fd); 2168 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1578} 2169 w->events &= ~EV_IOFDSET;
1579 2170
1580void 2171 EV_FREQUENT_CHECK;
2172}
2173
2174void noinline
1581ev_io_stop (EV_P_ ev_io *w) 2175ev_io_stop (EV_P_ ev_io *w)
1582{ 2176{
1583 ev_clear_pending (EV_A_ (W)w); 2177 clear_pending (EV_A_ (W)w);
1584 if (expect_false (!ev_is_active (w))) 2178 if (expect_false (!ev_is_active (w)))
1585 return; 2179 return;
1586 2180
1587 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2181 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1588 2182
2183 EV_FREQUENT_CHECK;
2184
1589 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2185 wlist_del (&anfds[w->fd].head, (WL)w);
1590 ev_stop (EV_A_ (W)w); 2186 ev_stop (EV_A_ (W)w);
1591 2187
1592 fd_change (EV_A_ w->fd); 2188 fd_change (EV_A_ w->fd, 1);
1593}
1594 2189
1595void 2190 EV_FREQUENT_CHECK;
2191}
2192
2193void noinline
1596ev_timer_start (EV_P_ ev_timer *w) 2194ev_timer_start (EV_P_ ev_timer *w)
1597{ 2195{
1598 if (expect_false (ev_is_active (w))) 2196 if (expect_false (ev_is_active (w)))
1599 return; 2197 return;
1600 2198
1601 ((WT)w)->at += mn_now; 2199 ev_at (w) += mn_now;
1602 2200
1603 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2201 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1604 2202
2203 EV_FREQUENT_CHECK;
2204
2205 ++timercnt;
1605 ev_start (EV_A_ (W)w, ++timercnt); 2206 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1606 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2207 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1607 timers [timercnt - 1] = w; 2208 ANHE_w (timers [ev_active (w)]) = (WT)w;
1608 upheap ((WT *)timers, timercnt - 1); 2209 ANHE_at_cache (timers [ev_active (w)]);
2210 upheap (timers, ev_active (w));
1609 2211
2212 EV_FREQUENT_CHECK;
2213
1610 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2214 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1611} 2215}
1612 2216
1613void 2217void noinline
1614ev_timer_stop (EV_P_ ev_timer *w) 2218ev_timer_stop (EV_P_ ev_timer *w)
1615{ 2219{
1616 ev_clear_pending (EV_A_ (W)w); 2220 clear_pending (EV_A_ (W)w);
1617 if (expect_false (!ev_is_active (w))) 2221 if (expect_false (!ev_is_active (w)))
1618 return; 2222 return;
1619 2223
1620 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2224 EV_FREQUENT_CHECK;
1621 2225
1622 { 2226 {
1623 int active = ((W)w)->active; 2227 int active = ev_active (w);
1624 2228
2229 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2230
2231 --timercnt;
2232
1625 if (expect_true (--active < --timercnt)) 2233 if (expect_true (active < timercnt + HEAP0))
1626 { 2234 {
1627 timers [active] = timers [timercnt]; 2235 timers [active] = timers [timercnt + HEAP0];
1628 adjustheap ((WT *)timers, timercnt, active); 2236 adjustheap (timers, timercnt, active);
1629 } 2237 }
1630 } 2238 }
1631 2239
1632 ((WT)w)->at -= mn_now; 2240 EV_FREQUENT_CHECK;
2241
2242 ev_at (w) -= mn_now;
1633 2243
1634 ev_stop (EV_A_ (W)w); 2244 ev_stop (EV_A_ (W)w);
1635} 2245}
1636 2246
1637void 2247void noinline
1638ev_timer_again (EV_P_ ev_timer *w) 2248ev_timer_again (EV_P_ ev_timer *w)
1639{ 2249{
2250 EV_FREQUENT_CHECK;
2251
1640 if (ev_is_active (w)) 2252 if (ev_is_active (w))
1641 { 2253 {
1642 if (w->repeat) 2254 if (w->repeat)
1643 { 2255 {
1644 ((WT)w)->at = mn_now + w->repeat; 2256 ev_at (w) = mn_now + w->repeat;
2257 ANHE_at_cache (timers [ev_active (w)]);
1645 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2258 adjustheap (timers, timercnt, ev_active (w));
1646 } 2259 }
1647 else 2260 else
1648 ev_timer_stop (EV_A_ w); 2261 ev_timer_stop (EV_A_ w);
1649 } 2262 }
1650 else if (w->repeat) 2263 else if (w->repeat)
1651 { 2264 {
1652 w->at = w->repeat; 2265 ev_at (w) = w->repeat;
1653 ev_timer_start (EV_A_ w); 2266 ev_timer_start (EV_A_ w);
1654 } 2267 }
2268
2269 EV_FREQUENT_CHECK;
1655} 2270}
1656 2271
1657#if EV_PERIODIC_ENABLE 2272#if EV_PERIODIC_ENABLE
1658void 2273void noinline
1659ev_periodic_start (EV_P_ ev_periodic *w) 2274ev_periodic_start (EV_P_ ev_periodic *w)
1660{ 2275{
1661 if (expect_false (ev_is_active (w))) 2276 if (expect_false (ev_is_active (w)))
1662 return; 2277 return;
1663 2278
1664 if (w->reschedule_cb) 2279 if (w->reschedule_cb)
1665 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2280 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1666 else if (w->interval) 2281 else if (w->interval)
1667 { 2282 {
1668 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2283 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1669 /* this formula differs from the one in periodic_reify because we do not always round up */ 2284 /* this formula differs from the one in periodic_reify because we do not always round up */
1670 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2285 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1671 } 2286 }
2287 else
2288 ev_at (w) = w->offset;
1672 2289
2290 EV_FREQUENT_CHECK;
2291
2292 ++periodiccnt;
1673 ev_start (EV_A_ (W)w, ++periodiccnt); 2293 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1674 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2294 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1675 periodics [periodiccnt - 1] = w; 2295 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1676 upheap ((WT *)periodics, periodiccnt - 1); 2296 ANHE_at_cache (periodics [ev_active (w)]);
2297 upheap (periodics, ev_active (w));
1677 2298
2299 EV_FREQUENT_CHECK;
2300
1678 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2301 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1679} 2302}
1680 2303
1681void 2304void noinline
1682ev_periodic_stop (EV_P_ ev_periodic *w) 2305ev_periodic_stop (EV_P_ ev_periodic *w)
1683{ 2306{
1684 ev_clear_pending (EV_A_ (W)w); 2307 clear_pending (EV_A_ (W)w);
1685 if (expect_false (!ev_is_active (w))) 2308 if (expect_false (!ev_is_active (w)))
1686 return; 2309 return;
1687 2310
1688 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2311 EV_FREQUENT_CHECK;
1689 2312
1690 { 2313 {
1691 int active = ((W)w)->active; 2314 int active = ev_active (w);
1692 2315
2316 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2317
2318 --periodiccnt;
2319
1693 if (expect_true (--active < --periodiccnt)) 2320 if (expect_true (active < periodiccnt + HEAP0))
1694 { 2321 {
1695 periodics [active] = periodics [periodiccnt]; 2322 periodics [active] = periodics [periodiccnt + HEAP0];
1696 adjustheap ((WT *)periodics, periodiccnt, active); 2323 adjustheap (periodics, periodiccnt, active);
1697 } 2324 }
1698 } 2325 }
1699 2326
2327 EV_FREQUENT_CHECK;
2328
1700 ev_stop (EV_A_ (W)w); 2329 ev_stop (EV_A_ (W)w);
1701} 2330}
1702 2331
1703void 2332void noinline
1704ev_periodic_again (EV_P_ ev_periodic *w) 2333ev_periodic_again (EV_P_ ev_periodic *w)
1705{ 2334{
1706 /* TODO: use adjustheap and recalculation */ 2335 /* TODO: use adjustheap and recalculation */
1707 ev_periodic_stop (EV_A_ w); 2336 ev_periodic_stop (EV_A_ w);
1708 ev_periodic_start (EV_A_ w); 2337 ev_periodic_start (EV_A_ w);
… …
1711 2340
1712#ifndef SA_RESTART 2341#ifndef SA_RESTART
1713# define SA_RESTART 0 2342# define SA_RESTART 0
1714#endif 2343#endif
1715 2344
1716void 2345void noinline
1717ev_signal_start (EV_P_ ev_signal *w) 2346ev_signal_start (EV_P_ ev_signal *w)
1718{ 2347{
1719#if EV_MULTIPLICITY 2348#if EV_MULTIPLICITY
1720 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2349 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1721#endif 2350#endif
1722 if (expect_false (ev_is_active (w))) 2351 if (expect_false (ev_is_active (w)))
1723 return; 2352 return;
1724 2353
1725 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2354 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2355
2356 evpipe_init (EV_A);
2357
2358 EV_FREQUENT_CHECK;
2359
2360 {
2361#ifndef _WIN32
2362 sigset_t full, prev;
2363 sigfillset (&full);
2364 sigprocmask (SIG_SETMASK, &full, &prev);
2365#endif
2366
2367 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2368
2369#ifndef _WIN32
2370 sigprocmask (SIG_SETMASK, &prev, 0);
2371#endif
2372 }
1726 2373
1727 ev_start (EV_A_ (W)w, 1); 2374 ev_start (EV_A_ (W)w, 1);
1728 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1729 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2375 wlist_add (&signals [w->signum - 1].head, (WL)w);
1730 2376
1731 if (!((WL)w)->next) 2377 if (!((WL)w)->next)
1732 { 2378 {
1733#if _WIN32 2379#if _WIN32
1734 signal (w->signum, sighandler); 2380 signal (w->signum, ev_sighandler);
1735#else 2381#else
1736 struct sigaction sa; 2382 struct sigaction sa;
1737 sa.sa_handler = sighandler; 2383 sa.sa_handler = ev_sighandler;
1738 sigfillset (&sa.sa_mask); 2384 sigfillset (&sa.sa_mask);
1739 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2385 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1740 sigaction (w->signum, &sa, 0); 2386 sigaction (w->signum, &sa, 0);
1741#endif 2387#endif
1742 } 2388 }
1743}
1744 2389
1745void 2390 EV_FREQUENT_CHECK;
2391}
2392
2393void noinline
1746ev_signal_stop (EV_P_ ev_signal *w) 2394ev_signal_stop (EV_P_ ev_signal *w)
1747{ 2395{
1748 ev_clear_pending (EV_A_ (W)w); 2396 clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w))) 2397 if (expect_false (!ev_is_active (w)))
1750 return; 2398 return;
1751 2399
2400 EV_FREQUENT_CHECK;
2401
1752 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2402 wlist_del (&signals [w->signum - 1].head, (WL)w);
1753 ev_stop (EV_A_ (W)w); 2403 ev_stop (EV_A_ (W)w);
1754 2404
1755 if (!signals [w->signum - 1].head) 2405 if (!signals [w->signum - 1].head)
1756 signal (w->signum, SIG_DFL); 2406 signal (w->signum, SIG_DFL);
2407
2408 EV_FREQUENT_CHECK;
1757} 2409}
1758 2410
1759void 2411void
1760ev_child_start (EV_P_ ev_child *w) 2412ev_child_start (EV_P_ ev_child *w)
1761{ 2413{
1762#if EV_MULTIPLICITY 2414#if EV_MULTIPLICITY
1763 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif 2416#endif
1765 if (expect_false (ev_is_active (w))) 2417 if (expect_false (ev_is_active (w)))
1766 return; 2418 return;
1767 2419
2420 EV_FREQUENT_CHECK;
2421
1768 ev_start (EV_A_ (W)w, 1); 2422 ev_start (EV_A_ (W)w, 1);
1769 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2423 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2424
2425 EV_FREQUENT_CHECK;
1770} 2426}
1771 2427
1772void 2428void
1773ev_child_stop (EV_P_ ev_child *w) 2429ev_child_stop (EV_P_ ev_child *w)
1774{ 2430{
1775 ev_clear_pending (EV_A_ (W)w); 2431 clear_pending (EV_A_ (W)w);
1776 if (expect_false (!ev_is_active (w))) 2432 if (expect_false (!ev_is_active (w)))
1777 return; 2433 return;
1778 2434
2435 EV_FREQUENT_CHECK;
2436
1779 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2437 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1780 ev_stop (EV_A_ (W)w); 2438 ev_stop (EV_A_ (W)w);
2439
2440 EV_FREQUENT_CHECK;
1781} 2441}
1782 2442
1783#if EV_STAT_ENABLE 2443#if EV_STAT_ENABLE
1784 2444
1785# ifdef _WIN32 2445# ifdef _WIN32
1786# undef lstat 2446# undef lstat
1787# define lstat(a,b) _stati64 (a,b) 2447# define lstat(a,b) _stati64 (a,b)
1788# endif 2448# endif
1789 2449
1790#define DEF_STAT_INTERVAL 5.0074891 2450#define DEF_STAT_INTERVAL 5.0074891
2451#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1791#define MIN_STAT_INTERVAL 0.1074891 2452#define MIN_STAT_INTERVAL 0.1074891
1792 2453
1793static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2454static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1794 2455
1795#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
1796# define EV_INOTIFY_BUFSIZE 8192 2457# define EV_INOTIFY_BUFSIZE 8192
… …
1800{ 2461{
1801 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2462 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);
1802 2463
1803 if (w->wd < 0) 2464 if (w->wd < 0)
1804 { 2465 {
2466 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1805 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2467 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1806 2468
1807 /* monitor some parent directory for speedup hints */ 2469 /* monitor some parent directory for speedup hints */
2470 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2471 /* but an efficiency issue only */
1808 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2472 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1809 { 2473 {
1810 char path [4096]; 2474 char path [4096];
1811 strcpy (path, w->path); 2475 strcpy (path, w->path);
1812 2476
… …
1815 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2479 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1816 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2480 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1817 2481
1818 char *pend = strrchr (path, '/'); 2482 char *pend = strrchr (path, '/');
1819 2483
1820 if (!pend) 2484 if (!pend || pend == path)
1821 break; /* whoops, no '/', complain to your admin */ 2485 break;
1822 2486
1823 *pend = 0; 2487 *pend = 0;
1824 w->wd = inotify_add_watch (fs_fd, path, mask); 2488 w->wd = inotify_add_watch (fs_fd, path, mask);
1825 } 2489 }
1826 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2490 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1827 } 2491 }
1828 } 2492 }
1829 else
1830 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1831 2493
1832 if (w->wd >= 0) 2494 if (w->wd >= 0)
2495 {
1833 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2496 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2497
2498 /* now local changes will be tracked by inotify, but remote changes won't */
2499 /* unless the filesystem it known to be local, we therefore still poll */
2500 /* also do poll on <2.6.25, but with normal frequency */
2501 struct statfs sfs;
2502
2503 if (fs_2625 && !statfs (w->path, &sfs))
2504 if (sfs.f_type == 0x1373 /* devfs */
2505 || sfs.f_type == 0xEF53 /* ext2/3 */
2506 || sfs.f_type == 0x3153464a /* jfs */
2507 || sfs.f_type == 0x52654973 /* reiser3 */
2508 || sfs.f_type == 0x01021994 /* tempfs */
2509 || sfs.f_type == 0x58465342 /* xfs */)
2510 return;
2511
2512 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2513 ev_timer_again (EV_A_ &w->timer);
2514 }
1834} 2515}
1835 2516
1836static void noinline 2517static void noinline
1837infy_del (EV_P_ ev_stat *w) 2518infy_del (EV_P_ ev_stat *w)
1838{ 2519{
… …
1852 2533
1853static void noinline 2534static void noinline
1854infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2535infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1855{ 2536{
1856 if (slot < 0) 2537 if (slot < 0)
1857 /* overflow, need to check for all hahs slots */ 2538 /* overflow, need to check for all hash slots */
1858 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2539 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1859 infy_wd (EV_A_ slot, wd, ev); 2540 infy_wd (EV_A_ slot, wd, ev);
1860 else 2541 else
1861 { 2542 {
1862 WL w_; 2543 WL w_;
… …
1868 2549
1869 if (w->wd == wd || wd == -1) 2550 if (w->wd == wd || wd == -1)
1870 { 2551 {
1871 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2552 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1872 { 2553 {
2554 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1873 w->wd = -1; 2555 w->wd = -1;
1874 infy_add (EV_A_ w); /* re-add, no matter what */ 2556 infy_add (EV_A_ w); /* re-add, no matter what */
1875 } 2557 }
1876 2558
1877 stat_timer_cb (EV_A_ &w->timer, 0); 2559 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1891 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2573 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1892 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1893} 2575}
1894 2576
1895void inline_size 2577void inline_size
2578check_2625 (EV_P)
2579{
2580 /* kernels < 2.6.25 are borked
2581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2582 */
2583 struct utsname buf;
2584 int major, minor, micro;
2585
2586 if (uname (&buf))
2587 return;
2588
2589 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2590 return;
2591
2592 if (major < 2
2593 || (major == 2 && minor < 6)
2594 || (major == 2 && minor == 6 && micro < 25))
2595 return;
2596
2597 fs_2625 = 1;
2598}
2599
2600void inline_size
1896infy_init (EV_P) 2601infy_init (EV_P)
1897{ 2602{
1898 if (fs_fd != -2) 2603 if (fs_fd != -2)
1899 return; 2604 return;
2605
2606 fs_fd = -1;
2607
2608 check_2625 (EV_A);
1900 2609
1901 fs_fd = inotify_init (); 2610 fs_fd = inotify_init ();
1902 2611
1903 if (fs_fd >= 0) 2612 if (fs_fd >= 0)
1904 { 2613 {
… …
1932 w->wd = -1; 2641 w->wd = -1;
1933 2642
1934 if (fs_fd >= 0) 2643 if (fs_fd >= 0)
1935 infy_add (EV_A_ w); /* re-add, no matter what */ 2644 infy_add (EV_A_ w); /* re-add, no matter what */
1936 else 2645 else
1937 ev_timer_start (EV_A_ &w->timer); 2646 ev_timer_again (EV_A_ &w->timer);
1938 } 2647 }
1939
1940 } 2648 }
1941} 2649}
1942 2650
2651#endif
2652
2653#ifdef _WIN32
2654# define EV_LSTAT(p,b) _stati64 (p, b)
2655#else
2656# define EV_LSTAT(p,b) lstat (p, b)
1943#endif 2657#endif
1944 2658
1945void 2659void
1946ev_stat_stat (EV_P_ ev_stat *w) 2660ev_stat_stat (EV_P_ ev_stat *w)
1947{ 2661{
… …
1974 || w->prev.st_atime != w->attr.st_atime 2688 || w->prev.st_atime != w->attr.st_atime
1975 || w->prev.st_mtime != w->attr.st_mtime 2689 || w->prev.st_mtime != w->attr.st_mtime
1976 || w->prev.st_ctime != w->attr.st_ctime 2690 || w->prev.st_ctime != w->attr.st_ctime
1977 ) { 2691 ) {
1978 #if EV_USE_INOTIFY 2692 #if EV_USE_INOTIFY
2693 if (fs_fd >= 0)
2694 {
1979 infy_del (EV_A_ w); 2695 infy_del (EV_A_ w);
1980 infy_add (EV_A_ w); 2696 infy_add (EV_A_ w);
1981 ev_stat_stat (EV_A_ w); /* avoid race... */ 2697 ev_stat_stat (EV_A_ w); /* avoid race... */
2698 }
1982 #endif 2699 #endif
1983 2700
1984 ev_feed_event (EV_A_ w, EV_STAT); 2701 ev_feed_event (EV_A_ w, EV_STAT);
1985 } 2702 }
1986} 2703}
… …
1989ev_stat_start (EV_P_ ev_stat *w) 2706ev_stat_start (EV_P_ ev_stat *w)
1990{ 2707{
1991 if (expect_false (ev_is_active (w))) 2708 if (expect_false (ev_is_active (w)))
1992 return; 2709 return;
1993 2710
1994 /* since we use memcmp, we need to clear any padding data etc. */
1995 memset (&w->prev, 0, sizeof (ev_statdata));
1996 memset (&w->attr, 0, sizeof (ev_statdata));
1997
1998 ev_stat_stat (EV_A_ w); 2711 ev_stat_stat (EV_A_ w);
1999 2712
2713 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2000 if (w->interval < MIN_STAT_INTERVAL) 2714 w->interval = MIN_STAT_INTERVAL;
2001 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2002 2715
2003 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2716 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2004 ev_set_priority (&w->timer, ev_priority (w)); 2717 ev_set_priority (&w->timer, ev_priority (w));
2005 2718
2006#if EV_USE_INOTIFY 2719#if EV_USE_INOTIFY
2007 infy_init (EV_A); 2720 infy_init (EV_A);
2008 2721
2009 if (fs_fd >= 0) 2722 if (fs_fd >= 0)
2010 infy_add (EV_A_ w); 2723 infy_add (EV_A_ w);
2011 else 2724 else
2012#endif 2725#endif
2013 ev_timer_start (EV_A_ &w->timer); 2726 ev_timer_again (EV_A_ &w->timer);
2014 2727
2015 ev_start (EV_A_ (W)w, 1); 2728 ev_start (EV_A_ (W)w, 1);
2729
2730 EV_FREQUENT_CHECK;
2016} 2731}
2017 2732
2018void 2733void
2019ev_stat_stop (EV_P_ ev_stat *w) 2734ev_stat_stop (EV_P_ ev_stat *w)
2020{ 2735{
2021 ev_clear_pending (EV_A_ (W)w); 2736 clear_pending (EV_A_ (W)w);
2022 if (expect_false (!ev_is_active (w))) 2737 if (expect_false (!ev_is_active (w)))
2023 return; 2738 return;
2024 2739
2740 EV_FREQUENT_CHECK;
2741
2025#if EV_USE_INOTIFY 2742#if EV_USE_INOTIFY
2026 infy_del (EV_A_ w); 2743 infy_del (EV_A_ w);
2027#endif 2744#endif
2028 ev_timer_stop (EV_A_ &w->timer); 2745 ev_timer_stop (EV_A_ &w->timer);
2029 2746
2030 ev_stop (EV_A_ (W)w); 2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
2031} 2750}
2032#endif 2751#endif
2033 2752
2034#if EV_IDLE_ENABLE 2753#if EV_IDLE_ENABLE
2035void 2754void
… …
2037{ 2756{
2038 if (expect_false (ev_is_active (w))) 2757 if (expect_false (ev_is_active (w)))
2039 return; 2758 return;
2040 2759
2041 pri_adjust (EV_A_ (W)w); 2760 pri_adjust (EV_A_ (W)w);
2761
2762 EV_FREQUENT_CHECK;
2042 2763
2043 { 2764 {
2044 int active = ++idlecnt [ABSPRI (w)]; 2765 int active = ++idlecnt [ABSPRI (w)];
2045 2766
2046 ++idleall; 2767 ++idleall;
2047 ev_start (EV_A_ (W)w, active); 2768 ev_start (EV_A_ (W)w, active);
2048 2769
2049 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2770 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2050 idles [ABSPRI (w)][active - 1] = w; 2771 idles [ABSPRI (w)][active - 1] = w;
2051 } 2772 }
2773
2774 EV_FREQUENT_CHECK;
2052} 2775}
2053 2776
2054void 2777void
2055ev_idle_stop (EV_P_ ev_idle *w) 2778ev_idle_stop (EV_P_ ev_idle *w)
2056{ 2779{
2057 ev_clear_pending (EV_A_ (W)w); 2780 clear_pending (EV_A_ (W)w);
2058 if (expect_false (!ev_is_active (w))) 2781 if (expect_false (!ev_is_active (w)))
2059 return; 2782 return;
2060 2783
2784 EV_FREQUENT_CHECK;
2785
2061 { 2786 {
2062 int active = ((W)w)->active; 2787 int active = ev_active (w);
2063 2788
2064 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2789 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2065 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2790 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2066 2791
2067 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2068 --idleall; 2793 --idleall;
2069 } 2794 }
2795
2796 EV_FREQUENT_CHECK;
2070} 2797}
2071#endif 2798#endif
2072 2799
2073void 2800void
2074ev_prepare_start (EV_P_ ev_prepare *w) 2801ev_prepare_start (EV_P_ ev_prepare *w)
2075{ 2802{
2076 if (expect_false (ev_is_active (w))) 2803 if (expect_false (ev_is_active (w)))
2077 return; 2804 return;
2805
2806 EV_FREQUENT_CHECK;
2078 2807
2079 ev_start (EV_A_ (W)w, ++preparecnt); 2808 ev_start (EV_A_ (W)w, ++preparecnt);
2080 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2809 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2081 prepares [preparecnt - 1] = w; 2810 prepares [preparecnt - 1] = w;
2811
2812 EV_FREQUENT_CHECK;
2082} 2813}
2083 2814
2084void 2815void
2085ev_prepare_stop (EV_P_ ev_prepare *w) 2816ev_prepare_stop (EV_P_ ev_prepare *w)
2086{ 2817{
2087 ev_clear_pending (EV_A_ (W)w); 2818 clear_pending (EV_A_ (W)w);
2088 if (expect_false (!ev_is_active (w))) 2819 if (expect_false (!ev_is_active (w)))
2089 return; 2820 return;
2090 2821
2822 EV_FREQUENT_CHECK;
2823
2091 { 2824 {
2092 int active = ((W)w)->active; 2825 int active = ev_active (w);
2826
2093 prepares [active - 1] = prepares [--preparecnt]; 2827 prepares [active - 1] = prepares [--preparecnt];
2094 ((W)prepares [active - 1])->active = active; 2828 ev_active (prepares [active - 1]) = active;
2095 } 2829 }
2096 2830
2097 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2832
2833 EV_FREQUENT_CHECK;
2098} 2834}
2099 2835
2100void 2836void
2101ev_check_start (EV_P_ ev_check *w) 2837ev_check_start (EV_P_ ev_check *w)
2102{ 2838{
2103 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
2104 return; 2840 return;
2841
2842 EV_FREQUENT_CHECK;
2105 2843
2106 ev_start (EV_A_ (W)w, ++checkcnt); 2844 ev_start (EV_A_ (W)w, ++checkcnt);
2107 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2845 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2108 checks [checkcnt - 1] = w; 2846 checks [checkcnt - 1] = w;
2847
2848 EV_FREQUENT_CHECK;
2109} 2849}
2110 2850
2111void 2851void
2112ev_check_stop (EV_P_ ev_check *w) 2852ev_check_stop (EV_P_ ev_check *w)
2113{ 2853{
2114 ev_clear_pending (EV_A_ (W)w); 2854 clear_pending (EV_A_ (W)w);
2115 if (expect_false (!ev_is_active (w))) 2855 if (expect_false (!ev_is_active (w)))
2116 return; 2856 return;
2117 2857
2858 EV_FREQUENT_CHECK;
2859
2118 { 2860 {
2119 int active = ((W)w)->active; 2861 int active = ev_active (w);
2862
2120 checks [active - 1] = checks [--checkcnt]; 2863 checks [active - 1] = checks [--checkcnt];
2121 ((W)checks [active - 1])->active = active; 2864 ev_active (checks [active - 1]) = active;
2122 } 2865 }
2123 2866
2124 ev_stop (EV_A_ (W)w); 2867 ev_stop (EV_A_ (W)w);
2868
2869 EV_FREQUENT_CHECK;
2125} 2870}
2126 2871
2127#if EV_EMBED_ENABLE 2872#if EV_EMBED_ENABLE
2128void noinline 2873void noinline
2129ev_embed_sweep (EV_P_ ev_embed *w) 2874ev_embed_sweep (EV_P_ ev_embed *w)
2130{ 2875{
2131 ev_loop (w->loop, EVLOOP_NONBLOCK); 2876 ev_loop (w->other, EVLOOP_NONBLOCK);
2132} 2877}
2133 2878
2134static void 2879static void
2135embed_cb (EV_P_ ev_io *io, int revents) 2880embed_io_cb (EV_P_ ev_io *io, int revents)
2136{ 2881{
2137 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2882 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2138 2883
2139 if (ev_cb (w)) 2884 if (ev_cb (w))
2140 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2885 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2141 else 2886 else
2142 ev_embed_sweep (loop, w); 2887 ev_loop (w->other, EVLOOP_NONBLOCK);
2143} 2888}
2889
2890static void
2891embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2892{
2893 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2894
2895 {
2896 struct ev_loop *loop = w->other;
2897
2898 while (fdchangecnt)
2899 {
2900 fd_reify (EV_A);
2901 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2902 }
2903 }
2904}
2905
2906static void
2907embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2908{
2909 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2910
2911 ev_embed_stop (EV_A_ w);
2912
2913 {
2914 struct ev_loop *loop = w->other;
2915
2916 ev_loop_fork (EV_A);
2917 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2918 }
2919
2920 ev_embed_start (EV_A_ w);
2921}
2922
2923#if 0
2924static void
2925embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2926{
2927 ev_idle_stop (EV_A_ idle);
2928}
2929#endif
2144 2930
2145void 2931void
2146ev_embed_start (EV_P_ ev_embed *w) 2932ev_embed_start (EV_P_ ev_embed *w)
2147{ 2933{
2148 if (expect_false (ev_is_active (w))) 2934 if (expect_false (ev_is_active (w)))
2149 return; 2935 return;
2150 2936
2151 { 2937 {
2152 struct ev_loop *loop = w->loop; 2938 struct ev_loop *loop = w->other;
2153 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2939 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2154 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2940 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2155 } 2941 }
2942
2943 EV_FREQUENT_CHECK;
2156 2944
2157 ev_set_priority (&w->io, ev_priority (w)); 2945 ev_set_priority (&w->io, ev_priority (w));
2158 ev_io_start (EV_A_ &w->io); 2946 ev_io_start (EV_A_ &w->io);
2159 2947
2948 ev_prepare_init (&w->prepare, embed_prepare_cb);
2949 ev_set_priority (&w->prepare, EV_MINPRI);
2950 ev_prepare_start (EV_A_ &w->prepare);
2951
2952 ev_fork_init (&w->fork, embed_fork_cb);
2953 ev_fork_start (EV_A_ &w->fork);
2954
2955 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2956
2160 ev_start (EV_A_ (W)w, 1); 2957 ev_start (EV_A_ (W)w, 1);
2958
2959 EV_FREQUENT_CHECK;
2161} 2960}
2162 2961
2163void 2962void
2164ev_embed_stop (EV_P_ ev_embed *w) 2963ev_embed_stop (EV_P_ ev_embed *w)
2165{ 2964{
2166 ev_clear_pending (EV_A_ (W)w); 2965 clear_pending (EV_A_ (W)w);
2167 if (expect_false (!ev_is_active (w))) 2966 if (expect_false (!ev_is_active (w)))
2168 return; 2967 return;
2169 2968
2969 EV_FREQUENT_CHECK;
2970
2170 ev_io_stop (EV_A_ &w->io); 2971 ev_io_stop (EV_A_ &w->io);
2972 ev_prepare_stop (EV_A_ &w->prepare);
2973 ev_fork_stop (EV_A_ &w->fork);
2171 2974
2172 ev_stop (EV_A_ (W)w); 2975 EV_FREQUENT_CHECK;
2173} 2976}
2174#endif 2977#endif
2175 2978
2176#if EV_FORK_ENABLE 2979#if EV_FORK_ENABLE
2177void 2980void
2178ev_fork_start (EV_P_ ev_fork *w) 2981ev_fork_start (EV_P_ ev_fork *w)
2179{ 2982{
2180 if (expect_false (ev_is_active (w))) 2983 if (expect_false (ev_is_active (w)))
2181 return; 2984 return;
2985
2986 EV_FREQUENT_CHECK;
2182 2987
2183 ev_start (EV_A_ (W)w, ++forkcnt); 2988 ev_start (EV_A_ (W)w, ++forkcnt);
2184 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 2989 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2185 forks [forkcnt - 1] = w; 2990 forks [forkcnt - 1] = w;
2991
2992 EV_FREQUENT_CHECK;
2186} 2993}
2187 2994
2188void 2995void
2189ev_fork_stop (EV_P_ ev_fork *w) 2996ev_fork_stop (EV_P_ ev_fork *w)
2190{ 2997{
2191 ev_clear_pending (EV_A_ (W)w); 2998 clear_pending (EV_A_ (W)w);
2192 if (expect_false (!ev_is_active (w))) 2999 if (expect_false (!ev_is_active (w)))
2193 return; 3000 return;
2194 3001
3002 EV_FREQUENT_CHECK;
3003
2195 { 3004 {
2196 int active = ((W)w)->active; 3005 int active = ev_active (w);
3006
2197 forks [active - 1] = forks [--forkcnt]; 3007 forks [active - 1] = forks [--forkcnt];
2198 ((W)forks [active - 1])->active = active; 3008 ev_active (forks [active - 1]) = active;
2199 } 3009 }
2200 3010
2201 ev_stop (EV_A_ (W)w); 3011 ev_stop (EV_A_ (W)w);
3012
3013 EV_FREQUENT_CHECK;
3014}
3015#endif
3016
3017#if EV_ASYNC_ENABLE
3018void
3019ev_async_start (EV_P_ ev_async *w)
3020{
3021 if (expect_false (ev_is_active (w)))
3022 return;
3023
3024 evpipe_init (EV_A);
3025
3026 EV_FREQUENT_CHECK;
3027
3028 ev_start (EV_A_ (W)w, ++asynccnt);
3029 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3030 asyncs [asynccnt - 1] = w;
3031
3032 EV_FREQUENT_CHECK;
3033}
3034
3035void
3036ev_async_stop (EV_P_ ev_async *w)
3037{
3038 clear_pending (EV_A_ (W)w);
3039 if (expect_false (!ev_is_active (w)))
3040 return;
3041
3042 EV_FREQUENT_CHECK;
3043
3044 {
3045 int active = ev_active (w);
3046
3047 asyncs [active - 1] = asyncs [--asynccnt];
3048 ev_active (asyncs [active - 1]) = active;
3049 }
3050
3051 ev_stop (EV_A_ (W)w);
3052
3053 EV_FREQUENT_CHECK;
3054}
3055
3056void
3057ev_async_send (EV_P_ ev_async *w)
3058{
3059 w->sent = 1;
3060 evpipe_write (EV_A_ &gotasync);
2202} 3061}
2203#endif 3062#endif
2204 3063
2205/*****************************************************************************/ 3064/*****************************************************************************/
2206 3065
… …
2216once_cb (EV_P_ struct ev_once *once, int revents) 3075once_cb (EV_P_ struct ev_once *once, int revents)
2217{ 3076{
2218 void (*cb)(int revents, void *arg) = once->cb; 3077 void (*cb)(int revents, void *arg) = once->cb;
2219 void *arg = once->arg; 3078 void *arg = once->arg;
2220 3079
2221 ev_io_stop (EV_A_ &once->io); 3080 ev_io_stop (EV_A_ &once->io);
2222 ev_timer_stop (EV_A_ &once->to); 3081 ev_timer_stop (EV_A_ &once->to);
2223 ev_free (once); 3082 ev_free (once);
2224 3083
2225 cb (revents, arg); 3084 cb (revents, arg);
2226} 3085}
2227 3086
2228static void 3087static void
2229once_cb_io (EV_P_ ev_io *w, int revents) 3088once_cb_io (EV_P_ ev_io *w, int revents)
2230{ 3089{
2231 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3090 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3091
3092 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2232} 3093}
2233 3094
2234static void 3095static void
2235once_cb_to (EV_P_ ev_timer *w, int revents) 3096once_cb_to (EV_P_ ev_timer *w, int revents)
2236{ 3097{
2237 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3098 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3099
3100 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2238} 3101}
2239 3102
2240void 3103void
2241ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3104ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2242{ 3105{
… …
2264 ev_timer_set (&once->to, timeout, 0.); 3127 ev_timer_set (&once->to, timeout, 0.);
2265 ev_timer_start (EV_A_ &once->to); 3128 ev_timer_start (EV_A_ &once->to);
2266 } 3129 }
2267} 3130}
2268 3131
3132#if EV_MULTIPLICITY
3133 #include "ev_wrap.h"
3134#endif
3135
2269#ifdef __cplusplus 3136#ifdef __cplusplus
2270} 3137}
2271#endif 3138#endif
2272 3139

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