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Comparing libev/ev.c (file contents):
Revision 1.111 by root, Mon Nov 12 06:34:49 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
43# ifndef EV_USE_REALTIME 47# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
45# endif 49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
46# endif 57# endif
47 58
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
58# endif 81# endif
59 82
83# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
62# endif 97# endif
63 98
64#endif 99#endif
65 100
66#include <math.h> 101#include <math.h>
76#include <time.h> 111#include <time.h>
77 112
78#include <signal.h> 113#include <signal.h>
79 114
80#ifndef _WIN32 115#ifndef _WIN32
81# include <unistd.h>
82# include <sys/time.h> 116# include <sys/time.h>
83# include <sys/wait.h> 117# include <sys/wait.h>
118# include <unistd.h>
84#else 119#else
85# define WIN32_LEAN_AND_MEAN 120# define WIN32_LEAN_AND_MEAN
86# include <windows.h> 121# include <windows.h>
87# ifndef EV_SELECT_IS_WINSOCKET 122# ifndef EV_SELECT_IS_WINSOCKET
88# define EV_SELECT_IS_WINSOCKET 1 123# define EV_SELECT_IS_WINSOCKET 1
90#endif 125#endif
91 126
92/**/ 127/**/
93 128
94#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
95# define EV_USE_MONOTONIC 1 130# define EV_USE_MONOTONIC 0
131#endif
132
133#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0
96#endif 135#endif
97 136
98#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
99# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
101#endif 139#endif
102 140
103#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
104# ifdef _WIN32 142# ifdef _WIN32
105# define EV_USE_POLL 0 143# define EV_USE_POLL 0
114 152
115#ifndef EV_USE_KQUEUE 153#ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE 0 154# define EV_USE_KQUEUE 0
117#endif 155#endif
118 156
119#ifndef EV_USE_REALTIME 157#ifndef EV_USE_PORT
120# define EV_USE_REALTIME 1 158# define EV_USE_PORT 0
121#endif 159#endif
122 160
123/**/ 161/**/
124
125/* darwin simply cannot be helped */
126#ifdef __APPLE__
127# undef EV_USE_POLL
128# undef EV_USE_KQUEUE
129#endif
130 162
131#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
132# undef EV_USE_MONOTONIC 164# undef EV_USE_MONOTONIC
133# define EV_USE_MONOTONIC 0 165# define EV_USE_MONOTONIC 0
134#endif 166#endif
143#endif 175#endif
144 176
145/**/ 177/**/
146 178
147#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
148#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
149#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
151 183
152#ifdef EV_H 184#ifdef EV_H
153# include EV_H 185# include EV_H
154#else 186#else
155# include "ev.h" 187# include "ev.h"
156#endif 188#endif
157 189
158#if __GNUC__ >= 3 190#if __GNUC__ >= 3
159# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
160# define inline inline 194# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
161#else 200#else
162# define expect(expr,value) (expr) 201# define expect(expr,value) (expr)
163# define inline static 202# define inline_speed static
203# define inline_minimal static
204# define noinline
164#endif 205#endif
165 206
166#define expect_false(expr) expect ((expr) != 0, 0) 207#define expect_false(expr) expect ((expr) != 0, 0)
167#define expect_true(expr) expect ((expr) != 0, 1) 208#define expect_true(expr) expect ((expr) != 0, 1)
168 209
169#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170#define ABSPRI(w) ((w)->priority - EV_MINPRI) 211#define ABSPRI(w) ((w)->priority - EV_MINPRI)
171 212
172#define EMPTY /* required for microsofts broken pseudo-c compiler */ 213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */
173 215
174typedef struct ev_watcher *W; 216typedef ev_watcher *W;
175typedef struct ev_watcher_list *WL; 217typedef ev_watcher_list *WL;
176typedef struct ev_watcher_time *WT; 218typedef ev_watcher_time *WT;
177 219
178static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
179 221
180#ifdef _WIN32 222#ifdef _WIN32
181# include "ev_win32.c" 223# include "ev_win32.c"
257 #include "ev_vars.h" 299 #include "ev_vars.h"
258 #undef VAR 300 #undef VAR
259 }; 301 };
260 #include "ev_wrap.h" 302 #include "ev_wrap.h"
261 303
262 struct ev_loop default_loop_struct; 304 static struct ev_loop default_loop_struct;
263 static struct ev_loop *default_loop; 305 struct ev_loop *ev_default_loop_ptr;
264 306
265#else 307#else
266 308
267 ev_tstamp ev_rt_now; 309 ev_tstamp ev_rt_now;
268 #define VAR(name,decl) static decl; 310 #define VAR(name,decl) static decl;
269 #include "ev_vars.h" 311 #include "ev_vars.h"
270 #undef VAR 312 #undef VAR
271 313
272 static int default_loop; 314 static int ev_default_loop_ptr;
273 315
274#endif 316#endif
275 317
276/*****************************************************************************/ 318/*****************************************************************************/
277 319
278ev_tstamp 320ev_tstamp noinline
279ev_time (void) 321ev_time (void)
280{ 322{
281#if EV_USE_REALTIME 323#if EV_USE_REALTIME
282 struct timespec ts; 324 struct timespec ts;
283 clock_gettime (CLOCK_REALTIME, &ts); 325 clock_gettime (CLOCK_REALTIME, &ts);
287 gettimeofday (&tv, 0); 329 gettimeofday (&tv, 0);
288 return tv.tv_sec + tv.tv_usec * 1e-6; 330 return tv.tv_sec + tv.tv_usec * 1e-6;
289#endif 331#endif
290} 332}
291 333
292inline ev_tstamp 334ev_tstamp inline_size
293get_clock (void) 335get_clock (void)
294{ 336{
295#if EV_USE_MONOTONIC 337#if EV_USE_MONOTONIC
296 if (expect_true (have_monotonic)) 338 if (expect_true (have_monotonic))
297 { 339 {
340#define array_free(stem, idx) \ 382#define array_free(stem, idx) \
341 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
342 384
343/*****************************************************************************/ 385/*****************************************************************************/
344 386
345static void 387void inline_size
346anfds_init (ANFD *base, int count) 388anfds_init (ANFD *base, int count)
347{ 389{
348 while (count--) 390 while (count--)
349 { 391 {
350 base->head = 0; 392 base->head = 0;
353 395
354 ++base; 396 ++base;
355 } 397 }
356} 398}
357 399
358void 400void noinline
359ev_feed_event (EV_P_ void *w, int revents) 401ev_feed_event (EV_P_ void *w, int revents)
360{ 402{
361 W w_ = (W)w; 403 W w_ = (W)w;
362 404
363 if (w_->pending) 405 if (expect_false (w_->pending))
364 { 406 {
365 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 407 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
366 return; 408 return;
367 } 409 }
368 410
369 w_->pending = ++pendingcnt [ABSPRI (w_)]; 411 w_->pending = ++pendingcnt [ABSPRI (w_)];
370 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); 412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
371 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
372 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
373} 415}
374 416
375static void 417static void
379 421
380 for (i = 0; i < eventcnt; ++i) 422 for (i = 0; i < eventcnt; ++i)
381 ev_feed_event (EV_A_ events [i], type); 423 ev_feed_event (EV_A_ events [i], type);
382} 424}
383 425
384inline void 426void inline_speed
385fd_event (EV_P_ int fd, int revents) 427fd_event (EV_P_ int fd, int revents)
386{ 428{
387 ANFD *anfd = anfds + fd; 429 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 430 ev_io *w;
389 431
390 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 432 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
391 { 433 {
392 int ev = w->events & revents; 434 int ev = w->events & revents;
393 435
394 if (ev) 436 if (ev)
395 ev_feed_event (EV_A_ (W)w, ev); 437 ev_feed_event (EV_A_ (W)w, ev);
402 fd_event (EV_A_ fd, revents); 444 fd_event (EV_A_ fd, revents);
403} 445}
404 446
405/*****************************************************************************/ 447/*****************************************************************************/
406 448
407static void 449void inline_size
408fd_reify (EV_P) 450fd_reify (EV_P)
409{ 451{
410 int i; 452 int i;
411 453
412 for (i = 0; i < fdchangecnt; ++i) 454 for (i = 0; i < fdchangecnt; ++i)
413 { 455 {
414 int fd = fdchanges [i]; 456 int fd = fdchanges [i];
415 ANFD *anfd = anfds + fd; 457 ANFD *anfd = anfds + fd;
416 struct ev_io *w; 458 ev_io *w;
417 459
418 int events = 0; 460 int events = 0;
419 461
420 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 462 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
421 events |= w->events; 463 events |= w->events;
422 464
423#if EV_SELECT_IS_WINSOCKET 465#if EV_SELECT_IS_WINSOCKET
424 if (events) 466 if (events)
425 { 467 {
429 } 471 }
430#endif 472#endif
431 473
432 anfd->reify = 0; 474 anfd->reify = 0;
433 475
434 method_modify (EV_A_ fd, anfd->events, events); 476 backend_modify (EV_A_ fd, anfd->events, events);
435 anfd->events = events; 477 anfd->events = events;
436 } 478 }
437 479
438 fdchangecnt = 0; 480 fdchangecnt = 0;
439} 481}
440 482
441static void 483void inline_size
442fd_change (EV_P_ int fd) 484fd_change (EV_P_ int fd)
443{ 485{
444 if (anfds [fd].reify) 486 if (expect_false (anfds [fd].reify))
445 return; 487 return;
446 488
447 anfds [fd].reify = 1; 489 anfds [fd].reify = 1;
448 490
449 ++fdchangecnt; 491 ++fdchangecnt;
450 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 492 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
451 fdchanges [fdchangecnt - 1] = fd; 493 fdchanges [fdchangecnt - 1] = fd;
452} 494}
453 495
454static void 496void inline_speed
455fd_kill (EV_P_ int fd) 497fd_kill (EV_P_ int fd)
456{ 498{
457 struct ev_io *w; 499 ev_io *w;
458 500
459 while ((w = (struct ev_io *)anfds [fd].head)) 501 while ((w = (ev_io *)anfds [fd].head))
460 { 502 {
461 ev_io_stop (EV_A_ w); 503 ev_io_stop (EV_A_ w);
462 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 504 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
463 } 505 }
464} 506}
465 507
466static int 508int inline_size
467fd_valid (int fd) 509fd_valid (int fd)
468{ 510{
469#ifdef _WIN32 511#ifdef _WIN32
470 return _get_osfhandle (fd) != -1; 512 return _get_osfhandle (fd) != -1;
471#else 513#else
472 return fcntl (fd, F_GETFD) != -1; 514 return fcntl (fd, F_GETFD) != -1;
473#endif 515#endif
474} 516}
475 517
476/* called on EBADF to verify fds */ 518/* called on EBADF to verify fds */
477static void 519static void noinline
478fd_ebadf (EV_P) 520fd_ebadf (EV_P)
479{ 521{
480 int fd; 522 int fd;
481 523
482 for (fd = 0; fd < anfdmax; ++fd) 524 for (fd = 0; fd < anfdmax; ++fd)
484 if (!fd_valid (fd) == -1 && errno == EBADF) 526 if (!fd_valid (fd) == -1 && errno == EBADF)
485 fd_kill (EV_A_ fd); 527 fd_kill (EV_A_ fd);
486} 528}
487 529
488/* called on ENOMEM in select/poll to kill some fds and retry */ 530/* called on ENOMEM in select/poll to kill some fds and retry */
489static void 531static void noinline
490fd_enomem (EV_P) 532fd_enomem (EV_P)
491{ 533{
492 int fd; 534 int fd;
493 535
494 for (fd = anfdmax; fd--; ) 536 for (fd = anfdmax; fd--; )
497 fd_kill (EV_A_ fd); 539 fd_kill (EV_A_ fd);
498 return; 540 return;
499 } 541 }
500} 542}
501 543
502/* usually called after fork if method needs to re-arm all fds from scratch */ 544/* usually called after fork if backend needs to re-arm all fds from scratch */
503static void 545static void noinline
504fd_rearm_all (EV_P) 546fd_rearm_all (EV_P)
505{ 547{
506 int fd; 548 int fd;
507 549
508 /* this should be highly optimised to not do anything but set a flag */ 550 /* this should be highly optimised to not do anything but set a flag */
514 } 556 }
515} 557}
516 558
517/*****************************************************************************/ 559/*****************************************************************************/
518 560
519static void 561void inline_speed
520upheap (WT *heap, int k) 562upheap (WT *heap, int k)
521{ 563{
522 WT w = heap [k]; 564 WT w = heap [k];
523 565
524 while (k && heap [k >> 1]->at > w->at) 566 while (k && heap [k >> 1]->at > w->at)
531 heap [k] = w; 573 heap [k] = w;
532 ((W)heap [k])->active = k + 1; 574 ((W)heap [k])->active = k + 1;
533 575
534} 576}
535 577
536static void 578void inline_speed
537downheap (WT *heap, int N, int k) 579downheap (WT *heap, int N, int k)
538{ 580{
539 WT w = heap [k]; 581 WT w = heap [k];
540 582
541 while (k < (N >> 1)) 583 while (k < (N >> 1))
555 597
556 heap [k] = w; 598 heap [k] = w;
557 ((W)heap [k])->active = k + 1; 599 ((W)heap [k])->active = k + 1;
558} 600}
559 601
560inline void 602void inline_size
561adjustheap (WT *heap, int N, int k) 603adjustheap (WT *heap, int N, int k)
562{ 604{
563 upheap (heap, k); 605 upheap (heap, k);
564 downheap (heap, N, k); 606 downheap (heap, N, k);
565} 607}
575static ANSIG *signals; 617static ANSIG *signals;
576static int signalmax; 618static int signalmax;
577 619
578static int sigpipe [2]; 620static int sigpipe [2];
579static sig_atomic_t volatile gotsig; 621static sig_atomic_t volatile gotsig;
580static struct ev_io sigev; 622static ev_io sigev;
581 623
582static void 624void inline_size
583signals_init (ANSIG *base, int count) 625signals_init (ANSIG *base, int count)
584{ 626{
585 while (count--) 627 while (count--)
586 { 628 {
587 base->head = 0; 629 base->head = 0;
607 write (sigpipe [1], &signum, 1); 649 write (sigpipe [1], &signum, 1);
608 errno = old_errno; 650 errno = old_errno;
609 } 651 }
610} 652}
611 653
612void 654void noinline
613ev_feed_signal_event (EV_P_ int signum) 655ev_feed_signal_event (EV_P_ int signum)
614{ 656{
615 WL w; 657 WL w;
616 658
617#if EV_MULTIPLICITY 659#if EV_MULTIPLICITY
618 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 660 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
619#endif 661#endif
620 662
621 --signum; 663 --signum;
622 664
623 if (signum < 0 || signum >= signalmax) 665 if (signum < 0 || signum >= signalmax)
628 for (w = signals [signum].head; w; w = w->next) 670 for (w = signals [signum].head; w; w = w->next)
629 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 671 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
630} 672}
631 673
632static void 674static void
633sigcb (EV_P_ struct ev_io *iow, int revents) 675sigcb (EV_P_ ev_io *iow, int revents)
634{ 676{
635 int signum; 677 int signum;
636 678
637 read (sigpipe [0], &revents, 1); 679 read (sigpipe [0], &revents, 1);
638 gotsig = 0; 680 gotsig = 0;
640 for (signum = signalmax; signum--; ) 682 for (signum = signalmax; signum--; )
641 if (signals [signum].gotsig) 683 if (signals [signum].gotsig)
642 ev_feed_signal_event (EV_A_ signum + 1); 684 ev_feed_signal_event (EV_A_ signum + 1);
643} 685}
644 686
645inline void 687void inline_size
646fd_intern (int fd) 688fd_intern (int fd)
647{ 689{
648#ifdef _WIN32 690#ifdef _WIN32
649 int arg = 1; 691 int arg = 1;
650 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 692 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
652 fcntl (fd, F_SETFD, FD_CLOEXEC); 694 fcntl (fd, F_SETFD, FD_CLOEXEC);
653 fcntl (fd, F_SETFL, O_NONBLOCK); 695 fcntl (fd, F_SETFL, O_NONBLOCK);
654#endif 696#endif
655} 697}
656 698
657static void 699static void noinline
658siginit (EV_P) 700siginit (EV_P)
659{ 701{
660 fd_intern (sigpipe [0]); 702 fd_intern (sigpipe [0]);
661 fd_intern (sigpipe [1]); 703 fd_intern (sigpipe [1]);
662 704
665 ev_unref (EV_A); /* child watcher should not keep loop alive */ 707 ev_unref (EV_A); /* child watcher should not keep loop alive */
666} 708}
667 709
668/*****************************************************************************/ 710/*****************************************************************************/
669 711
670static struct ev_child *childs [PID_HASHSIZE]; 712static ev_child *childs [PID_HASHSIZE];
671 713
672#ifndef _WIN32 714#ifndef _WIN32
673 715
674static struct ev_signal childev; 716static ev_signal childev;
675 717
676#ifndef WCONTINUED 718#ifndef WCONTINUED
677# define WCONTINUED 0 719# define WCONTINUED 0
678#endif 720#endif
679 721
680static void 722void inline_speed
681child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
682{ 724{
683 struct ev_child *w; 725 ev_child *w;
684 726
685 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
686 if (w->pid == pid || !w->pid) 728 if (w->pid == pid || !w->pid)
687 { 729 {
688 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
689 w->rpid = pid; 731 w->rpid = pid;
690 w->rstatus = status; 732 w->rstatus = status;
691 ev_feed_event (EV_A_ (W)w, EV_CHILD); 733 ev_feed_event (EV_A_ (W)w, EV_CHILD);
692 } 734 }
693} 735}
694 736
695static void 737static void
696childcb (EV_P_ struct ev_signal *sw, int revents) 738childcb (EV_P_ ev_signal *sw, int revents)
697{ 739{
698 int pid, status; 740 int pid, status;
699 741
700 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
701 { 743 {
702 /* make sure we are called again until all childs have been reaped */ 744 /* make sure we are called again until all childs have been reaped */
745 /* we need to do it this way so that the callback gets called before we continue */
703 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
704 747
705 child_reap (EV_A_ sw, pid, pid, status); 748 child_reap (EV_A_ sw, pid, pid, status);
706 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 749 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
707 } 750 }
708} 751}
709 752
710#endif 753#endif
711 754
712/*****************************************************************************/ 755/*****************************************************************************/
713 756
757#if EV_USE_PORT
758# include "ev_port.c"
759#endif
714#if EV_USE_KQUEUE 760#if EV_USE_KQUEUE
715# include "ev_kqueue.c" 761# include "ev_kqueue.c"
716#endif 762#endif
717#if EV_USE_EPOLL 763#if EV_USE_EPOLL
718# include "ev_epoll.c" 764# include "ev_epoll.c"
735{ 781{
736 return EV_VERSION_MINOR; 782 return EV_VERSION_MINOR;
737} 783}
738 784
739/* return true if we are running with elevated privileges and should ignore env variables */ 785/* return true if we are running with elevated privileges and should ignore env variables */
740static int 786int inline_size
741enable_secure (void) 787enable_secure (void)
742{ 788{
743#ifdef _WIN32 789#ifdef _WIN32
744 return 0; 790 return 0;
745#else 791#else
747 || getgid () != getegid (); 793 || getgid () != getegid ();
748#endif 794#endif
749} 795}
750 796
751unsigned int 797unsigned int
752ev_method (EV_P) 798ev_supported_backends (void)
753{ 799{
754 return method; 800 unsigned int flags = 0;
801
802 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
803 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
804 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
805 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
806 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
807
808 return flags;
809}
810
811unsigned int
812ev_recommended_backends (void)
813{
814 unsigned int flags = ev_supported_backends ();
815
816#ifndef __NetBSD__
817 /* kqueue is borked on everything but netbsd apparently */
818 /* it usually doesn't work correctly on anything but sockets and pipes */
819 flags &= ~EVBACKEND_KQUEUE;
820#endif
821#ifdef __APPLE__
822 // flags &= ~EVBACKEND_KQUEUE; for documentation
823 flags &= ~EVBACKEND_POLL;
824#endif
825
826 return flags;
827}
828
829unsigned int
830ev_embeddable_backends (void)
831{
832 return EVBACKEND_EPOLL
833 | EVBACKEND_KQUEUE
834 | EVBACKEND_PORT;
835}
836
837unsigned int
838ev_backend (EV_P)
839{
840 return backend;
755} 841}
756 842
757static void 843static void
758loop_init (EV_P_ unsigned int flags) 844loop_init (EV_P_ unsigned int flags)
759{ 845{
760 if (!method) 846 if (!backend)
761 { 847 {
762#if EV_USE_MONOTONIC 848#if EV_USE_MONOTONIC
763 { 849 {
764 struct timespec ts; 850 struct timespec ts;
765 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 851 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
770 ev_rt_now = ev_time (); 856 ev_rt_now = ev_time ();
771 mn_now = get_clock (); 857 mn_now = get_clock ();
772 now_floor = mn_now; 858 now_floor = mn_now;
773 rtmn_diff = ev_rt_now - mn_now; 859 rtmn_diff = ev_rt_now - mn_now;
774 860
775 if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 861 if (!(flags & EVFLAG_NOENV)
862 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS"))
776 flags = atoi (getenv ("LIBEV_FLAGS")); 864 flags = atoi (getenv ("LIBEV_FLAGS"));
777 865
778 if (!(flags & 0x0000ffff)) 866 if (!(flags & 0x0000ffffUL))
779 flags |= 0x0000ffff; 867 flags |= ev_recommended_backends ();
780 868
781 method = 0; 869 backend = 0;
870#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif
782#if EV_USE_KQUEUE 873#if EV_USE_KQUEUE
783 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
784#endif 875#endif
785#if EV_USE_EPOLL 876#if EV_USE_EPOLL
786 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 877 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
787#endif 878#endif
788#if EV_USE_POLL 879#if EV_USE_POLL
789 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 880 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
790#endif 881#endif
791#if EV_USE_SELECT 882#if EV_USE_SELECT
792 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 883 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
793#endif 884#endif
794 885
795 ev_init (&sigev, sigcb); 886 ev_init (&sigev, sigcb);
796 ev_set_priority (&sigev, EV_MAXPRI); 887 ev_set_priority (&sigev, EV_MAXPRI);
797 } 888 }
798} 889}
799 890
800void 891static void
801loop_destroy (EV_P) 892loop_destroy (EV_P)
802{ 893{
803 int i; 894 int i;
804 895
896#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif
805#if EV_USE_KQUEUE 899#if EV_USE_KQUEUE
806 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
807#endif 901#endif
808#if EV_USE_EPOLL 902#if EV_USE_EPOLL
809 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 903 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
810#endif 904#endif
811#if EV_USE_POLL 905#if EV_USE_POLL
812 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 906 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
813#endif 907#endif
814#if EV_USE_SELECT 908#if EV_USE_SELECT
815 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 909 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
816#endif 910#endif
817 911
818 for (i = NUMPRI; i--; ) 912 for (i = NUMPRI; i--; )
819 array_free (pending, [i]); 913 array_free (pending, [i]);
820 914
821 /* have to use the microsoft-never-gets-it-right macro */ 915 /* have to use the microsoft-never-gets-it-right macro */
822 array_free (fdchange, EMPTY); 916 array_free (fdchange, EMPTY0);
823 array_free (timer, EMPTY); 917 array_free (timer, EMPTY0);
824#if EV_PERIODICS 918#if EV_PERIODIC_ENABLE
825 array_free (periodic, EMPTY); 919 array_free (periodic, EMPTY0);
826#endif 920#endif
827 array_free (idle, EMPTY); 921 array_free (idle, EMPTY0);
828 array_free (prepare, EMPTY); 922 array_free (prepare, EMPTY0);
829 array_free (check, EMPTY); 923 array_free (check, EMPTY0);
830 924
831 method = 0; 925 backend = 0;
832} 926}
833 927
834static void 928static void
835loop_fork (EV_P) 929loop_fork (EV_P)
836{ 930{
931#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif
934#if EV_USE_KQUEUE
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif
837#if EV_USE_EPOLL 937#if EV_USE_EPOLL
838 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
839#endif
840#if EV_USE_KQUEUE
841 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
842#endif 939#endif
843 940
844 if (ev_is_active (&sigev)) 941 if (ev_is_active (&sigev))
845 { 942 {
846 /* default loop */ 943 /* default loop */
867 964
868 memset (loop, 0, sizeof (struct ev_loop)); 965 memset (loop, 0, sizeof (struct ev_loop));
869 966
870 loop_init (EV_A_ flags); 967 loop_init (EV_A_ flags);
871 968
872 if (ev_method (EV_A)) 969 if (ev_backend (EV_A))
873 return loop; 970 return loop;
874 971
875 return 0; 972 return 0;
876} 973}
877 974
890 987
891#endif 988#endif
892 989
893#if EV_MULTIPLICITY 990#if EV_MULTIPLICITY
894struct ev_loop * 991struct ev_loop *
992ev_default_loop_init (unsigned int flags)
895#else 993#else
896int 994int
897#endif
898ev_default_loop (unsigned int flags) 995ev_default_loop (unsigned int flags)
996#endif
899{ 997{
900 if (sigpipe [0] == sigpipe [1]) 998 if (sigpipe [0] == sigpipe [1])
901 if (pipe (sigpipe)) 999 if (pipe (sigpipe))
902 return 0; 1000 return 0;
903 1001
904 if (!default_loop) 1002 if (!ev_default_loop_ptr)
905 { 1003 {
906#if EV_MULTIPLICITY 1004#if EV_MULTIPLICITY
907 struct ev_loop *loop = default_loop = &default_loop_struct; 1005 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
908#else 1006#else
909 default_loop = 1; 1007 ev_default_loop_ptr = 1;
910#endif 1008#endif
911 1009
912 loop_init (EV_A_ flags); 1010 loop_init (EV_A_ flags);
913 1011
914 if (ev_method (EV_A)) 1012 if (ev_backend (EV_A))
915 { 1013 {
916 siginit (EV_A); 1014 siginit (EV_A);
917 1015
918#ifndef _WIN32 1016#ifndef _WIN32
919 ev_signal_init (&childev, childcb, SIGCHLD); 1017 ev_signal_init (&childev, childcb, SIGCHLD);
921 ev_signal_start (EV_A_ &childev); 1019 ev_signal_start (EV_A_ &childev);
922 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1020 ev_unref (EV_A); /* child watcher should not keep loop alive */
923#endif 1021#endif
924 } 1022 }
925 else 1023 else
926 default_loop = 0; 1024 ev_default_loop_ptr = 0;
927 } 1025 }
928 1026
929 return default_loop; 1027 return ev_default_loop_ptr;
930} 1028}
931 1029
932void 1030void
933ev_default_destroy (void) 1031ev_default_destroy (void)
934{ 1032{
935#if EV_MULTIPLICITY 1033#if EV_MULTIPLICITY
936 struct ev_loop *loop = default_loop; 1034 struct ev_loop *loop = ev_default_loop_ptr;
937#endif 1035#endif
938 1036
939#ifndef _WIN32 1037#ifndef _WIN32
940 ev_ref (EV_A); /* child watcher */ 1038 ev_ref (EV_A); /* child watcher */
941 ev_signal_stop (EV_A_ &childev); 1039 ev_signal_stop (EV_A_ &childev);
952 1050
953void 1051void
954ev_default_fork (void) 1052ev_default_fork (void)
955{ 1053{
956#if EV_MULTIPLICITY 1054#if EV_MULTIPLICITY
957 struct ev_loop *loop = default_loop; 1055 struct ev_loop *loop = ev_default_loop_ptr;
958#endif 1056#endif
959 1057
960 if (method) 1058 if (backend)
961 postfork = 1; 1059 postfork = 1;
962} 1060}
963 1061
964/*****************************************************************************/ 1062/*****************************************************************************/
965 1063
966static int 1064int inline_size
967any_pending (EV_P) 1065any_pending (EV_P)
968{ 1066{
969 int pri; 1067 int pri;
970 1068
971 for (pri = NUMPRI; pri--; ) 1069 for (pri = NUMPRI; pri--; )
973 return 1; 1071 return 1;
974 1072
975 return 0; 1073 return 0;
976} 1074}
977 1075
978static void 1076void inline_speed
979call_pending (EV_P) 1077call_pending (EV_P)
980{ 1078{
981 int pri; 1079 int pri;
982 1080
983 for (pri = NUMPRI; pri--; ) 1081 for (pri = NUMPRI; pri--; )
984 while (pendingcnt [pri]) 1082 while (pendingcnt [pri])
985 { 1083 {
986 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
987 1085
988 if (p->w) 1086 if (expect_true (p->w))
989 { 1087 {
1088 assert (("non-pending watcher on pending list", p->w->pending));
1089
990 p->w->pending = 0; 1090 p->w->pending = 0;
991 EV_CB_INVOKE (p->w, p->events); 1091 EV_CB_INVOKE (p->w, p->events);
992 } 1092 }
993 } 1093 }
994} 1094}
995 1095
996static void 1096void inline_size
997timers_reify (EV_P) 1097timers_reify (EV_P)
998{ 1098{
999 while (timercnt && ((WT)timers [0])->at <= mn_now) 1099 while (timercnt && ((WT)timers [0])->at <= mn_now)
1000 { 1100 {
1001 struct ev_timer *w = timers [0]; 1101 ev_timer *w = timers [0];
1002 1102
1003 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1103 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1004 1104
1005 /* first reschedule or stop timer */ 1105 /* first reschedule or stop timer */
1006 if (w->repeat) 1106 if (w->repeat)
1018 1118
1019 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1119 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1020 } 1120 }
1021} 1121}
1022 1122
1023#if EV_PERIODICS 1123#if EV_PERIODIC_ENABLE
1024static void 1124void inline_size
1025periodics_reify (EV_P) 1125periodics_reify (EV_P)
1026{ 1126{
1027 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1028 { 1128 {
1029 struct ev_periodic *w = periodics [0]; 1129 ev_periodic *w = periodics [0];
1030 1130
1031 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1131 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1032 1132
1033 /* first reschedule or stop timer */ 1133 /* first reschedule or stop timer */
1034 if (w->reschedule_cb) 1134 if (w->reschedule_cb)
1048 1148
1049 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1149 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1050 } 1150 }
1051} 1151}
1052 1152
1053static void 1153static void noinline
1054periodics_reschedule (EV_P) 1154periodics_reschedule (EV_P)
1055{ 1155{
1056 int i; 1156 int i;
1057 1157
1058 /* adjust periodics after time jump */ 1158 /* adjust periodics after time jump */
1059 for (i = 0; i < periodiccnt; ++i) 1159 for (i = 0; i < periodiccnt; ++i)
1060 { 1160 {
1061 struct ev_periodic *w = periodics [i]; 1161 ev_periodic *w = periodics [i];
1062 1162
1063 if (w->reschedule_cb) 1163 if (w->reschedule_cb)
1064 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1164 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1065 else if (w->interval) 1165 else if (w->interval)
1066 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1166 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1070 for (i = periodiccnt >> 1; i--; ) 1170 for (i = periodiccnt >> 1; i--; )
1071 downheap ((WT *)periodics, periodiccnt, i); 1171 downheap ((WT *)periodics, periodiccnt, i);
1072} 1172}
1073#endif 1173#endif
1074 1174
1075inline int 1175int inline_size
1076time_update_monotonic (EV_P) 1176time_update_monotonic (EV_P)
1077{ 1177{
1078 mn_now = get_clock (); 1178 mn_now = get_clock ();
1079 1179
1080 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1088 ev_rt_now = ev_time (); 1188 ev_rt_now = ev_time ();
1089 return 1; 1189 return 1;
1090 } 1190 }
1091} 1191}
1092 1192
1093static void 1193void inline_size
1094time_update (EV_P) 1194time_update (EV_P)
1095{ 1195{
1096 int i; 1196 int i;
1097 1197
1098#if EV_USE_MONOTONIC 1198#if EV_USE_MONOTONIC
1100 { 1200 {
1101 if (time_update_monotonic (EV_A)) 1201 if (time_update_monotonic (EV_A))
1102 { 1202 {
1103 ev_tstamp odiff = rtmn_diff; 1203 ev_tstamp odiff = rtmn_diff;
1104 1204
1105 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1205 /* loop a few times, before making important decisions.
1206 * on the choice of "4": one iteration isn't enough,
1207 * in case we get preempted during the calls to
1208 * ev_time and get_clock. a second call is almost guarenteed
1209 * to succeed in that case, though. and looping a few more times
1210 * doesn't hurt either as we only do this on time-jumps or
1211 * in the unlikely event of getting preempted here.
1212 */
1213 for (i = 4; --i; )
1106 { 1214 {
1107 rtmn_diff = ev_rt_now - mn_now; 1215 rtmn_diff = ev_rt_now - mn_now;
1108 1216
1109 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1217 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1110 return; /* all is well */ 1218 return; /* all is well */
1112 ev_rt_now = ev_time (); 1220 ev_rt_now = ev_time ();
1113 mn_now = get_clock (); 1221 mn_now = get_clock ();
1114 now_floor = mn_now; 1222 now_floor = mn_now;
1115 } 1223 }
1116 1224
1117# if EV_PERIODICS 1225# if EV_PERIODIC_ENABLE
1118 periodics_reschedule (EV_A); 1226 periodics_reschedule (EV_A);
1119# endif 1227# endif
1120 /* no timer adjustment, as the monotonic clock doesn't jump */ 1228 /* no timer adjustment, as the monotonic clock doesn't jump */
1121 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1229 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1122 } 1230 }
1126 { 1234 {
1127 ev_rt_now = ev_time (); 1235 ev_rt_now = ev_time ();
1128 1236
1129 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1237 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1130 { 1238 {
1131#if EV_PERIODICS 1239#if EV_PERIODIC_ENABLE
1132 periodics_reschedule (EV_A); 1240 periodics_reschedule (EV_A);
1133#endif 1241#endif
1134 1242
1135 /* adjust timers. this is easy, as the offset is the same for all */ 1243 /* adjust timers. this is easy, as the offset is the same for all */
1136 for (i = 0; i < timercnt; ++i) 1244 for (i = 0; i < timercnt; ++i)
1156static int loop_done; 1264static int loop_done;
1157 1265
1158void 1266void
1159ev_loop (EV_P_ int flags) 1267ev_loop (EV_P_ int flags)
1160{ 1268{
1161 double block;
1162 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL;
1163 1272
1164 do 1273 while (activecnt)
1165 { 1274 {
1166 /* queue check watchers (and execute them) */ 1275 /* queue check watchers (and execute them) */
1167 if (expect_false (preparecnt)) 1276 if (expect_false (preparecnt))
1168 { 1277 {
1169 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1176 1285
1177 /* update fd-related kernel structures */ 1286 /* update fd-related kernel structures */
1178 fd_reify (EV_A); 1287 fd_reify (EV_A);
1179 1288
1180 /* calculate blocking time */ 1289 /* calculate blocking time */
1290 {
1291 double block;
1181 1292
1182 /* we only need this for !monotonic clock or timers, but as we basically 1293 if (flags & EVLOOP_NONBLOCK || idlecnt)
1183 always have timers, we just calculate it always */ 1294 block = 0.; /* do not block at all */
1295 else
1296 {
1297 /* update time to cancel out callback processing overhead */
1184#if EV_USE_MONOTONIC 1298#if EV_USE_MONOTONIC
1185 if (expect_true (have_monotonic)) 1299 if (expect_true (have_monotonic))
1186 time_update_monotonic (EV_A); 1300 time_update_monotonic (EV_A);
1187 else 1301 else
1188#endif 1302#endif
1189 { 1303 {
1190 ev_rt_now = ev_time (); 1304 ev_rt_now = ev_time ();
1191 mn_now = ev_rt_now; 1305 mn_now = ev_rt_now;
1192 } 1306 }
1193 1307
1194 if (flags & EVLOOP_NONBLOCK || idlecnt)
1195 block = 0.;
1196 else
1197 {
1198 block = MAX_BLOCKTIME; 1308 block = MAX_BLOCKTIME;
1199 1309
1200 if (timercnt) 1310 if (timercnt)
1201 { 1311 {
1202 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1312 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1203 if (block > to) block = to; 1313 if (block > to) block = to;
1204 } 1314 }
1205 1315
1206#if EV_PERIODICS 1316#if EV_PERIODIC_ENABLE
1207 if (periodiccnt) 1317 if (periodiccnt)
1208 { 1318 {
1209 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1319 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1210 if (block > to) block = to; 1320 if (block > to) block = to;
1211 } 1321 }
1212#endif 1322#endif
1213 1323
1214 if (block < 0.) block = 0.; 1324 if (expect_false (block < 0.)) block = 0.;
1215 } 1325 }
1216 1326
1217 method_poll (EV_A_ block); 1327 backend_poll (EV_A_ block);
1328 }
1218 1329
1219 /* update ev_rt_now, do magic */ 1330 /* update ev_rt_now, do magic */
1220 time_update (EV_A); 1331 time_update (EV_A);
1221 1332
1222 /* queue pending timers and reschedule them */ 1333 /* queue pending timers and reschedule them */
1223 timers_reify (EV_A); /* relative timers called last */ 1334 timers_reify (EV_A); /* relative timers called last */
1224#if EV_PERIODICS 1335#if EV_PERIODIC_ENABLE
1225 periodics_reify (EV_A); /* absolute timers called first */ 1336 periodics_reify (EV_A); /* absolute timers called first */
1226#endif 1337#endif
1227 1338
1228 /* queue idle watchers unless io or timers are pending */ 1339 /* queue idle watchers unless other events are pending */
1229 if (idlecnt && !any_pending (EV_A)) 1340 if (idlecnt && !any_pending (EV_A))
1230 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1341 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1231 1342
1232 /* queue check watchers, to be executed first */ 1343 /* queue check watchers, to be executed first */
1233 if (checkcnt) 1344 if (expect_false (checkcnt))
1234 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1235 1346
1236 call_pending (EV_A); 1347 call_pending (EV_A);
1237 }
1238 while (activecnt && !loop_done);
1239 1348
1240 if (loop_done != 2) 1349 if (expect_false (loop_done))
1241 loop_done = 0; 1350 break;
1351 }
1352
1353 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL;
1242} 1355}
1243 1356
1244void 1357void
1245ev_unloop (EV_P_ int how) 1358ev_unloop (EV_P_ int how)
1246{ 1359{
1247 loop_done = how; 1360 loop_done = how;
1248} 1361}
1249 1362
1250/*****************************************************************************/ 1363/*****************************************************************************/
1251 1364
1252inline void 1365void inline_size
1253wlist_add (WL *head, WL elem) 1366wlist_add (WL *head, WL elem)
1254{ 1367{
1255 elem->next = *head; 1368 elem->next = *head;
1256 *head = elem; 1369 *head = elem;
1257} 1370}
1258 1371
1259inline void 1372void inline_size
1260wlist_del (WL *head, WL elem) 1373wlist_del (WL *head, WL elem)
1261{ 1374{
1262 while (*head) 1375 while (*head)
1263 { 1376 {
1264 if (*head == elem) 1377 if (*head == elem)
1269 1382
1270 head = &(*head)->next; 1383 head = &(*head)->next;
1271 } 1384 }
1272} 1385}
1273 1386
1274inline void 1387void inline_speed
1275ev_clear_pending (EV_P_ W w) 1388ev_clear_pending (EV_P_ W w)
1276{ 1389{
1277 if (w->pending) 1390 if (w->pending)
1278 { 1391 {
1279 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1392 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1280 w->pending = 0; 1393 w->pending = 0;
1281 } 1394 }
1282} 1395}
1283 1396
1284inline void 1397void inline_speed
1285ev_start (EV_P_ W w, int active) 1398ev_start (EV_P_ W w, int active)
1286{ 1399{
1287 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1400 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1288 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1401 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1289 1402
1290 w->active = active; 1403 w->active = active;
1291 ev_ref (EV_A); 1404 ev_ref (EV_A);
1292} 1405}
1293 1406
1294inline void 1407void inline_size
1295ev_stop (EV_P_ W w) 1408ev_stop (EV_P_ W w)
1296{ 1409{
1297 ev_unref (EV_A); 1410 ev_unref (EV_A);
1298 w->active = 0; 1411 w->active = 0;
1299} 1412}
1300 1413
1301/*****************************************************************************/ 1414/*****************************************************************************/
1302 1415
1303void 1416void
1304ev_io_start (EV_P_ struct ev_io *w) 1417ev_io_start (EV_P_ ev_io *w)
1305{ 1418{
1306 int fd = w->fd; 1419 int fd = w->fd;
1307 1420
1308 if (ev_is_active (w)) 1421 if (expect_false (ev_is_active (w)))
1309 return; 1422 return;
1310 1423
1311 assert (("ev_io_start called with negative fd", fd >= 0)); 1424 assert (("ev_io_start called with negative fd", fd >= 0));
1312 1425
1313 ev_start (EV_A_ (W)w, 1); 1426 ev_start (EV_A_ (W)w, 1);
1316 1429
1317 fd_change (EV_A_ fd); 1430 fd_change (EV_A_ fd);
1318} 1431}
1319 1432
1320void 1433void
1321ev_io_stop (EV_P_ struct ev_io *w) 1434ev_io_stop (EV_P_ ev_io *w)
1322{ 1435{
1323 ev_clear_pending (EV_A_ (W)w); 1436 ev_clear_pending (EV_A_ (W)w);
1324 if (!ev_is_active (w)) 1437 if (expect_false (!ev_is_active (w)))
1325 return; 1438 return;
1326 1439
1327 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1440 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1328 1441
1329 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1442 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1331 1444
1332 fd_change (EV_A_ w->fd); 1445 fd_change (EV_A_ w->fd);
1333} 1446}
1334 1447
1335void 1448void
1336ev_timer_start (EV_P_ struct ev_timer *w) 1449ev_timer_start (EV_P_ ev_timer *w)
1337{ 1450{
1338 if (ev_is_active (w)) 1451 if (expect_false (ev_is_active (w)))
1339 return; 1452 return;
1340 1453
1341 ((WT)w)->at += mn_now; 1454 ((WT)w)->at += mn_now;
1342 1455
1343 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1456 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1344 1457
1345 ev_start (EV_A_ (W)w, ++timercnt); 1458 ev_start (EV_A_ (W)w, ++timercnt);
1346 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1347 timers [timercnt - 1] = w; 1460 timers [timercnt - 1] = w;
1348 upheap ((WT *)timers, timercnt - 1); 1461 upheap ((WT *)timers, timercnt - 1);
1349 1462
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351} 1464}
1352 1465
1353void 1466void
1354ev_timer_stop (EV_P_ struct ev_timer *w) 1467ev_timer_stop (EV_P_ ev_timer *w)
1355{ 1468{
1356 ev_clear_pending (EV_A_ (W)w); 1469 ev_clear_pending (EV_A_ (W)w);
1357 if (!ev_is_active (w)) 1470 if (expect_false (!ev_is_active (w)))
1358 return; 1471 return;
1359 1472
1360 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1361 1474
1362 if (((W)w)->active < timercnt--) 1475 if (expect_true (((W)w)->active < timercnt--))
1363 { 1476 {
1364 timers [((W)w)->active - 1] = timers [timercnt]; 1477 timers [((W)w)->active - 1] = timers [timercnt];
1365 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1366 } 1479 }
1367 1480
1369 1482
1370 ev_stop (EV_A_ (W)w); 1483 ev_stop (EV_A_ (W)w);
1371} 1484}
1372 1485
1373void 1486void
1374ev_timer_again (EV_P_ struct ev_timer *w) 1487ev_timer_again (EV_P_ ev_timer *w)
1375{ 1488{
1376 if (ev_is_active (w)) 1489 if (ev_is_active (w))
1377 { 1490 {
1378 if (w->repeat) 1491 if (w->repeat)
1379 { 1492 {
1382 } 1495 }
1383 else 1496 else
1384 ev_timer_stop (EV_A_ w); 1497 ev_timer_stop (EV_A_ w);
1385 } 1498 }
1386 else if (w->repeat) 1499 else if (w->repeat)
1500 {
1501 w->at = w->repeat;
1387 ev_timer_start (EV_A_ w); 1502 ev_timer_start (EV_A_ w);
1503 }
1388} 1504}
1389 1505
1390#if EV_PERIODICS 1506#if EV_PERIODIC_ENABLE
1391void 1507void
1392ev_periodic_start (EV_P_ struct ev_periodic *w) 1508ev_periodic_start (EV_P_ ev_periodic *w)
1393{ 1509{
1394 if (ev_is_active (w)) 1510 if (expect_false (ev_is_active (w)))
1395 return; 1511 return;
1396 1512
1397 if (w->reschedule_cb) 1513 if (w->reschedule_cb)
1398 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1514 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1399 else if (w->interval) 1515 else if (w->interval)
1402 /* this formula differs from the one in periodic_reify because we do not always round up */ 1518 /* this formula differs from the one in periodic_reify because we do not always round up */
1403 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1519 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1404 } 1520 }
1405 1521
1406 ev_start (EV_A_ (W)w, ++periodiccnt); 1522 ev_start (EV_A_ (W)w, ++periodiccnt);
1407 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1408 periodics [periodiccnt - 1] = w; 1524 periodics [periodiccnt - 1] = w;
1409 upheap ((WT *)periodics, periodiccnt - 1); 1525 upheap ((WT *)periodics, periodiccnt - 1);
1410 1526
1411 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1412} 1528}
1413 1529
1414void 1530void
1415ev_periodic_stop (EV_P_ struct ev_periodic *w) 1531ev_periodic_stop (EV_P_ ev_periodic *w)
1416{ 1532{
1417 ev_clear_pending (EV_A_ (W)w); 1533 ev_clear_pending (EV_A_ (W)w);
1418 if (!ev_is_active (w)) 1534 if (expect_false (!ev_is_active (w)))
1419 return; 1535 return;
1420 1536
1421 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1422 1538
1423 if (((W)w)->active < periodiccnt--) 1539 if (expect_true (((W)w)->active < periodiccnt--))
1424 { 1540 {
1425 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1541 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1426 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1427 } 1543 }
1428 1544
1429 ev_stop (EV_A_ (W)w); 1545 ev_stop (EV_A_ (W)w);
1430} 1546}
1431 1547
1432void 1548void
1433ev_periodic_again (EV_P_ struct ev_periodic *w) 1549ev_periodic_again (EV_P_ ev_periodic *w)
1434{ 1550{
1435 /* TODO: use adjustheap and recalculation */ 1551 /* TODO: use adjustheap and recalculation */
1436 ev_periodic_stop (EV_A_ w); 1552 ev_periodic_stop (EV_A_ w);
1437 ev_periodic_start (EV_A_ w); 1553 ev_periodic_start (EV_A_ w);
1438} 1554}
1439#endif 1555#endif
1440 1556
1441void 1557void
1442ev_idle_start (EV_P_ struct ev_idle *w) 1558ev_idle_start (EV_P_ ev_idle *w)
1443{ 1559{
1444 if (ev_is_active (w)) 1560 if (expect_false (ev_is_active (w)))
1445 return; 1561 return;
1446 1562
1447 ev_start (EV_A_ (W)w, ++idlecnt); 1563 ev_start (EV_A_ (W)w, ++idlecnt);
1448 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); 1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1449 idles [idlecnt - 1] = w; 1565 idles [idlecnt - 1] = w;
1450} 1566}
1451 1567
1452void 1568void
1453ev_idle_stop (EV_P_ struct ev_idle *w) 1569ev_idle_stop (EV_P_ ev_idle *w)
1454{ 1570{
1455 ev_clear_pending (EV_A_ (W)w); 1571 ev_clear_pending (EV_A_ (W)w);
1456 if (!ev_is_active (w)) 1572 if (expect_false (!ev_is_active (w)))
1457 return; 1573 return;
1458 1574
1575 {
1576 int active = ((W)w)->active;
1459 idles [((W)w)->active - 1] = idles [--idlecnt]; 1577 idles [active - 1] = idles [--idlecnt];
1578 ((W)idles [active - 1])->active = active;
1579 }
1580
1460 ev_stop (EV_A_ (W)w); 1581 ev_stop (EV_A_ (W)w);
1461} 1582}
1462 1583
1463void 1584void
1464ev_prepare_start (EV_P_ struct ev_prepare *w) 1585ev_prepare_start (EV_P_ ev_prepare *w)
1465{ 1586{
1466 if (ev_is_active (w)) 1587 if (expect_false (ev_is_active (w)))
1467 return; 1588 return;
1468 1589
1469 ev_start (EV_A_ (W)w, ++preparecnt); 1590 ev_start (EV_A_ (W)w, ++preparecnt);
1470 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); 1591 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1471 prepares [preparecnt - 1] = w; 1592 prepares [preparecnt - 1] = w;
1472} 1593}
1473 1594
1474void 1595void
1475ev_prepare_stop (EV_P_ struct ev_prepare *w) 1596ev_prepare_stop (EV_P_ ev_prepare *w)
1476{ 1597{
1477 ev_clear_pending (EV_A_ (W)w); 1598 ev_clear_pending (EV_A_ (W)w);
1478 if (!ev_is_active (w)) 1599 if (expect_false (!ev_is_active (w)))
1479 return; 1600 return;
1480 1601
1602 {
1603 int active = ((W)w)->active;
1481 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1604 prepares [active - 1] = prepares [--preparecnt];
1605 ((W)prepares [active - 1])->active = active;
1606 }
1607
1482 ev_stop (EV_A_ (W)w); 1608 ev_stop (EV_A_ (W)w);
1483} 1609}
1484 1610
1485void 1611void
1486ev_check_start (EV_P_ struct ev_check *w) 1612ev_check_start (EV_P_ ev_check *w)
1487{ 1613{
1488 if (ev_is_active (w)) 1614 if (expect_false (ev_is_active (w)))
1489 return; 1615 return;
1490 1616
1491 ev_start (EV_A_ (W)w, ++checkcnt); 1617 ev_start (EV_A_ (W)w, ++checkcnt);
1492 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); 1618 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1493 checks [checkcnt - 1] = w; 1619 checks [checkcnt - 1] = w;
1494} 1620}
1495 1621
1496void 1622void
1497ev_check_stop (EV_P_ struct ev_check *w) 1623ev_check_stop (EV_P_ ev_check *w)
1498{ 1624{
1499 ev_clear_pending (EV_A_ (W)w); 1625 ev_clear_pending (EV_A_ (W)w);
1500 if (!ev_is_active (w)) 1626 if (expect_false (!ev_is_active (w)))
1501 return; 1627 return;
1502 1628
1629 {
1630 int active = ((W)w)->active;
1503 checks [((W)w)->active - 1] = checks [--checkcnt]; 1631 checks [active - 1] = checks [--checkcnt];
1632 ((W)checks [active - 1])->active = active;
1633 }
1634
1504 ev_stop (EV_A_ (W)w); 1635 ev_stop (EV_A_ (W)w);
1505} 1636}
1506 1637
1507#ifndef SA_RESTART 1638#ifndef SA_RESTART
1508# define SA_RESTART 0 1639# define SA_RESTART 0
1509#endif 1640#endif
1510 1641
1511void 1642void
1512ev_signal_start (EV_P_ struct ev_signal *w) 1643ev_signal_start (EV_P_ ev_signal *w)
1513{ 1644{
1514#if EV_MULTIPLICITY 1645#if EV_MULTIPLICITY
1515 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1646 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1516#endif 1647#endif
1517 if (ev_is_active (w)) 1648 if (expect_false (ev_is_active (w)))
1518 return; 1649 return;
1519 1650
1520 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1651 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1521 1652
1522 ev_start (EV_A_ (W)w, 1); 1653 ev_start (EV_A_ (W)w, 1);
1536#endif 1667#endif
1537 } 1668 }
1538} 1669}
1539 1670
1540void 1671void
1541ev_signal_stop (EV_P_ struct ev_signal *w) 1672ev_signal_stop (EV_P_ ev_signal *w)
1542{ 1673{
1543 ev_clear_pending (EV_A_ (W)w); 1674 ev_clear_pending (EV_A_ (W)w);
1544 if (!ev_is_active (w)) 1675 if (expect_false (!ev_is_active (w)))
1545 return; 1676 return;
1546 1677
1547 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1678 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1548 ev_stop (EV_A_ (W)w); 1679 ev_stop (EV_A_ (W)w);
1549 1680
1550 if (!signals [w->signum - 1].head) 1681 if (!signals [w->signum - 1].head)
1551 signal (w->signum, SIG_DFL); 1682 signal (w->signum, SIG_DFL);
1552} 1683}
1553 1684
1554void 1685void
1555ev_child_start (EV_P_ struct ev_child *w) 1686ev_child_start (EV_P_ ev_child *w)
1556{ 1687{
1557#if EV_MULTIPLICITY 1688#if EV_MULTIPLICITY
1558 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1689 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1559#endif 1690#endif
1560 if (ev_is_active (w)) 1691 if (expect_false (ev_is_active (w)))
1561 return; 1692 return;
1562 1693
1563 ev_start (EV_A_ (W)w, 1); 1694 ev_start (EV_A_ (W)w, 1);
1564 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1565} 1696}
1566 1697
1567void 1698void
1568ev_child_stop (EV_P_ struct ev_child *w) 1699ev_child_stop (EV_P_ ev_child *w)
1569{ 1700{
1570 ev_clear_pending (EV_A_ (W)w); 1701 ev_clear_pending (EV_A_ (W)w);
1571 if (!ev_is_active (w)) 1702 if (expect_false (!ev_is_active (w)))
1572 return; 1703 return;
1573 1704
1574 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1575 ev_stop (EV_A_ (W)w); 1706 ev_stop (EV_A_ (W)w);
1576} 1707}
1577 1708
1709#if EV_EMBED_ENABLE
1710void noinline
1711ev_embed_sweep (EV_P_ ev_embed *w)
1712{
1713 ev_loop (w->loop, EVLOOP_NONBLOCK);
1714}
1715
1716static void
1717embed_cb (EV_P_ ev_io *io, int revents)
1718{
1719 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1720
1721 if (ev_cb (w))
1722 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1723 else
1724 ev_embed_sweep (loop, w);
1725}
1726
1727void
1728ev_embed_start (EV_P_ ev_embed *w)
1729{
1730 if (expect_false (ev_is_active (w)))
1731 return;
1732
1733 {
1734 struct ev_loop *loop = w->loop;
1735 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1737 }
1738
1739 ev_set_priority (&w->io, ev_priority (w));
1740 ev_io_start (EV_A_ &w->io);
1741
1742 ev_start (EV_A_ (W)w, 1);
1743}
1744
1745void
1746ev_embed_stop (EV_P_ ev_embed *w)
1747{
1748 ev_clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w)))
1750 return;
1751
1752 ev_io_stop (EV_A_ &w->io);
1753
1754 ev_stop (EV_A_ (W)w);
1755}
1756#endif
1757
1758#if EV_STAT_ENABLE
1759
1760# ifdef _WIN32
1761# define lstat(a,b) stat(a,b)
1762# endif
1763
1764void
1765ev_stat_stat (EV_P_ ev_stat *w)
1766{
1767 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1;
1771}
1772
1773static void
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w);
1782
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784 ev_feed_event (EV_A_ w, EV_STAT);
1785}
1786
1787void
1788ev_stat_start (EV_P_ ev_stat *w)
1789{
1790 if (expect_false (ev_is_active (w)))
1791 return;
1792
1793 /* since we use memcmp, we need to clear any padding data etc. */
1794 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797 ev_stat_stat (EV_A_ w);
1798
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w));
1801 ev_timer_start (EV_A_ &w->timer);
1802
1803 ev_start (EV_A_ (W)w, 1);
1804}
1805
1806void
1807ev_stat_stop (EV_P_ ev_stat *w)
1808{
1809 ev_clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w)))
1811 return;
1812
1813 ev_timer_stop (EV_A_ &w->timer);
1814
1815 ev_stop (EV_A_ (W)w);
1816}
1817#endif
1818
1578/*****************************************************************************/ 1819/*****************************************************************************/
1579 1820
1580struct ev_once 1821struct ev_once
1581{ 1822{
1582 struct ev_io io; 1823 ev_io io;
1583 struct ev_timer to; 1824 ev_timer to;
1584 void (*cb)(int revents, void *arg); 1825 void (*cb)(int revents, void *arg);
1585 void *arg; 1826 void *arg;
1586}; 1827};
1587 1828
1588static void 1829static void
1597 1838
1598 cb (revents, arg); 1839 cb (revents, arg);
1599} 1840}
1600 1841
1601static void 1842static void
1602once_cb_io (EV_P_ struct ev_io *w, int revents) 1843once_cb_io (EV_P_ ev_io *w, int revents)
1603{ 1844{
1604 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1845 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1605} 1846}
1606 1847
1607static void 1848static void
1608once_cb_to (EV_P_ struct ev_timer *w, int revents) 1849once_cb_to (EV_P_ ev_timer *w, int revents)
1609{ 1850{
1610 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1851 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1611} 1852}
1612 1853
1613void 1854void
1614ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1855ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1615{ 1856{
1616 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1857 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1617 1858
1618 if (!once) 1859 if (expect_false (!once))
1860 {
1619 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1861 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1620 else 1862 return;
1621 { 1863 }
1864
1622 once->cb = cb; 1865 once->cb = cb;
1623 once->arg = arg; 1866 once->arg = arg;
1624 1867
1625 ev_init (&once->io, once_cb_io); 1868 ev_init (&once->io, once_cb_io);
1626 if (fd >= 0) 1869 if (fd >= 0)
1627 { 1870 {
1628 ev_io_set (&once->io, fd, events); 1871 ev_io_set (&once->io, fd, events);
1629 ev_io_start (EV_A_ &once->io); 1872 ev_io_start (EV_A_ &once->io);
1630 } 1873 }
1631 1874
1632 ev_init (&once->to, once_cb_to); 1875 ev_init (&once->to, once_cb_to);
1633 if (timeout >= 0.) 1876 if (timeout >= 0.)
1634 { 1877 {
1635 ev_timer_set (&once->to, timeout, 0.); 1878 ev_timer_set (&once->to, timeout, 0.);
1636 ev_timer_start (EV_A_ &once->to); 1879 ev_timer_start (EV_A_ &once->to);
1637 }
1638 } 1880 }
1639} 1881}
1640 1882
1641#ifdef __cplusplus 1883#ifdef __cplusplus
1642} 1884}

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