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Comparing libev/ev.c (file contents):
Revision 1.138 by root, Sat Nov 24 09:48:38 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 2007 UTC

51# ifndef EV_USE_MONOTONIC 51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 52# define EV_USE_MONOTONIC 0
53# endif 53# endif
54# ifndef EV_USE_REALTIME 54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 55# define EV_USE_REALTIME 0
56# endif
57# endif
58
59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
56# endif 64# endif
57# endif 65# endif
58 66
59# ifndef EV_USE_SELECT 67# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 68# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# else 102# else
95# define EV_USE_PORT 0 103# define EV_USE_PORT 0
96# endif 104# endif
97# endif 105# endif
98 106
107# ifndef EV_USE_INOTIFY
108# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
109# define EV_USE_INOTIFY 1
110# else
111# define EV_USE_INOTIFY 0
112# endif
113# endif
114
99#endif 115#endif
100 116
101#include <math.h> 117#include <math.h>
102#include <stdlib.h> 118#include <stdlib.h>
103#include <fcntl.h> 119#include <fcntl.h>
110#include <sys/types.h> 126#include <sys/types.h>
111#include <time.h> 127#include <time.h>
112 128
113#include <signal.h> 129#include <signal.h>
114 130
131#ifdef EV_H
132# include EV_H
133#else
134# include "ev.h"
135#endif
136
115#ifndef _WIN32 137#ifndef _WIN32
116# include <unistd.h>
117# include <sys/time.h> 138# include <sys/time.h>
118# include <sys/wait.h> 139# include <sys/wait.h>
140# include <unistd.h>
119#else 141#else
120# define WIN32_LEAN_AND_MEAN 142# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 143# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 144# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 145# define EV_SELECT_IS_WINSOCKET 1
132 154
133#ifndef EV_USE_REALTIME 155#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 156# define EV_USE_REALTIME 0
135#endif 157#endif
136 158
159#ifndef EV_USE_NANOSLEEP
160# define EV_USE_NANOSLEEP 0
161#endif
162
137#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
139#endif 165#endif
140 166
141#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
156 182
157#ifndef EV_USE_PORT 183#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 184# define EV_USE_PORT 0
159#endif 185#endif
160 186
187#ifndef EV_USE_INOTIFY
188# define EV_USE_INOTIFY 0
189#endif
190
191#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL
193# define EV_PID_HASHSIZE 1
194# else
195# define EV_PID_HASHSIZE 16
196# endif
197#endif
198
199#ifndef EV_INOTIFY_HASHSIZE
200# if EV_MINIMAL
201# define EV_INOTIFY_HASHSIZE 1
202# else
203# define EV_INOTIFY_HASHSIZE 16
204# endif
205#endif
206
161/**/ 207/**/
162 208
163#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 210# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 211# define EV_USE_MONOTONIC 0
168#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
171#endif 217#endif
172 218
219#if !EV_STAT_ENABLE
220# undef EV_USE_INOTIFY
221# define EV_USE_INOTIFY 0
222#endif
223
224#if !EV_USE_NANOSLEEP
225# ifndef _WIN32
226# include <sys/select.h>
227# endif
228#endif
229
230#if EV_USE_INOTIFY
231# include <sys/inotify.h>
232#endif
233
173#if EV_SELECT_IS_WINSOCKET 234#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 235# include <winsock.h>
175#endif 236#endif
176 237
177/**/ 238/**/
178 239
240/*
241 * This is used to avoid floating point rounding problems.
242 * It is added to ev_rt_now when scheduling periodics
243 * to ensure progress, time-wise, even when rounding
244 * errors are against us.
245 * This value is good at least till the year 4000.
246 * Better solutions welcome.
247 */
248#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
249
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 253
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 254#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline static inline 256# define noinline __attribute__ ((noinline))
193#else 257#else
194# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
195# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
196#endif 263#endif
197 264
198#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
199#define expect_true(expr) expect ((expr) != 0, 1) 266#define expect_true(expr) expect ((expr) != 0, 1)
267#define inline_size static inline
268
269#if EV_MINIMAL
270# define inline_speed static noinline
271#else
272# define inline_speed static inline
273#endif
200 274
201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203 277
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 278#define EMPTY /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */ 279#define EMPTY2(a,b) /* used to suppress some warnings */
206 280
207typedef ev_watcher *W; 281typedef ev_watcher *W;
208typedef ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
209typedef ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
210 284
285#if EV_USE_MONOTONIC
286/* sig_atomic_t is used to avoid per-thread variables or locking but still */
287/* giving it a reasonably high chance of working on typical architetcures */
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 288static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
289#endif
212 290
213#ifdef _WIN32 291#ifdef _WIN32
214# include "ev_win32.c" 292# include "ev_win32.c"
215#endif 293#endif
216 294
217/*****************************************************************************/ 295/*****************************************************************************/
218 296
219static void (*syserr_cb)(const char *msg); 297static void (*syserr_cb)(const char *msg);
220 298
299void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 300ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 301{
223 syserr_cb = cb; 302 syserr_cb = cb;
224} 303}
225 304
226static void 305static void noinline
227syserr (const char *msg) 306syserr (const char *msg)
228{ 307{
229 if (!msg) 308 if (!msg)
230 msg = "(libev) system error"; 309 msg = "(libev) system error";
231 310
238 } 317 }
239} 318}
240 319
241static void *(*alloc)(void *ptr, long size); 320static void *(*alloc)(void *ptr, long size);
242 321
322void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 323ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 324{
245 alloc = cb; 325 alloc = cb;
246} 326}
247 327
248static void * 328inline_speed void *
249ev_realloc (void *ptr, long size) 329ev_realloc (void *ptr, long size)
250{ 330{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 331 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252 332
253 if (!ptr && size) 333 if (!ptr && size)
277typedef struct 357typedef struct
278{ 358{
279 W w; 359 W w;
280 int events; 360 int events;
281} ANPENDING; 361} ANPENDING;
362
363#if EV_USE_INOTIFY
364typedef struct
365{
366 WL head;
367} ANFS;
368#endif
282 369
283#if EV_MULTIPLICITY 370#if EV_MULTIPLICITY
284 371
285 struct ev_loop 372 struct ev_loop
286 { 373 {
320 gettimeofday (&tv, 0); 407 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 408 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 409#endif
323} 410}
324 411
325inline ev_tstamp 412ev_tstamp inline_size
326get_clock (void) 413get_clock (void)
327{ 414{
328#if EV_USE_MONOTONIC 415#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 416 if (expect_true (have_monotonic))
330 { 417 {
343{ 430{
344 return ev_rt_now; 431 return ev_rt_now;
345} 432}
346#endif 433#endif
347 434
348#define array_roundsize(type,n) (((n) | 4) & ~3) 435void
436ev_sleep (ev_tstamp delay)
437{
438 if (delay > 0.)
439 {
440#if EV_USE_NANOSLEEP
441 struct timespec ts;
442
443 ts.tv_sec = (time_t)delay;
444 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
445
446 nanosleep (&ts, 0);
447#elif defined(_WIN32)
448 Sleep (delay * 1e3);
449#else
450 struct timeval tv;
451
452 tv.tv_sec = (time_t)delay;
453 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
454
455 select (0, 0, 0, 0, &tv);
456#endif
457 }
458}
459
460/*****************************************************************************/
461
462int inline_size
463array_nextsize (int elem, int cur, int cnt)
464{
465 int ncur = cur + 1;
466
467 do
468 ncur <<= 1;
469 while (cnt > ncur);
470
471 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
472 if (elem * ncur > 4096)
473 {
474 ncur *= elem;
475 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
476 ncur = ncur - sizeof (void *) * 4;
477 ncur /= elem;
478 }
479
480 return ncur;
481}
482
483static noinline void *
484array_realloc (int elem, void *base, int *cur, int cnt)
485{
486 *cur = array_nextsize (elem, *cur, cnt);
487 return ev_realloc (base, elem * *cur);
488}
349 489
350#define array_needsize(type,base,cur,cnt,init) \ 490#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 491 if (expect_false ((cnt) > (cur))) \
352 { \ 492 { \
353 int newcnt = cur; \ 493 int ocur_ = (cur); \
354 do \ 494 (base) = (type *)array_realloc \
355 { \ 495 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 496 init ((base) + (ocur_), (cur) - ocur_); \
357 } \
358 while ((cnt) > newcnt); \
359 \
360 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361 init (base + cur, newcnt - cur); \
362 cur = newcnt; \
363 } 497 }
364 498
499#if 0
365#define array_slim(type,stem) \ 500#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 501 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 502 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 503 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 504 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 505 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 506 }
507#endif
372 508
373#define array_free(stem, idx) \ 509#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 510 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 511
376/*****************************************************************************/ 512/*****************************************************************************/
377 513
378static void 514void noinline
515ev_feed_event (EV_P_ void *w, int revents)
516{
517 W w_ = (W)w;
518 int pri = ABSPRI (w_);
519
520 if (expect_false (w_->pending))
521 pendings [pri][w_->pending - 1].events |= revents;
522 else
523 {
524 w_->pending = ++pendingcnt [pri];
525 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
526 pendings [pri][w_->pending - 1].w = w_;
527 pendings [pri][w_->pending - 1].events = revents;
528 }
529}
530
531void inline_speed
532queue_events (EV_P_ W *events, int eventcnt, int type)
533{
534 int i;
535
536 for (i = 0; i < eventcnt; ++i)
537 ev_feed_event (EV_A_ events [i], type);
538}
539
540/*****************************************************************************/
541
542void inline_size
379anfds_init (ANFD *base, int count) 543anfds_init (ANFD *base, int count)
380{ 544{
381 while (count--) 545 while (count--)
382 { 546 {
383 base->head = 0; 547 base->head = 0;
386 550
387 ++base; 551 ++base;
388 } 552 }
389} 553}
390 554
391void 555void inline_speed
392ev_feed_event (EV_P_ void *w, int revents)
393{
394 W w_ = (W)w;
395
396 if (expect_false (w_->pending))
397 {
398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399 return;
400 }
401
402 w_->pending = ++pendingcnt [ABSPRI (w_)];
403 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406}
407
408static void
409queue_events (EV_P_ W *events, int eventcnt, int type)
410{
411 int i;
412
413 for (i = 0; i < eventcnt; ++i)
414 ev_feed_event (EV_A_ events [i], type);
415}
416
417inline void
418fd_event (EV_P_ int fd, int revents) 556fd_event (EV_P_ int fd, int revents)
419{ 557{
420 ANFD *anfd = anfds + fd; 558 ANFD *anfd = anfds + fd;
421 ev_io *w; 559 ev_io *w;
422 560
430} 568}
431 569
432void 570void
433ev_feed_fd_event (EV_P_ int fd, int revents) 571ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 572{
573 if (fd >= 0 && fd < anfdmax)
435 fd_event (EV_A_ fd, revents); 574 fd_event (EV_A_ fd, revents);
436} 575}
437 576
438/*****************************************************************************/ 577void inline_size
439
440inline void
441fd_reify (EV_P) 578fd_reify (EV_P)
442{ 579{
443 int i; 580 int i;
444 581
445 for (i = 0; i < fdchangecnt; ++i) 582 for (i = 0; i < fdchangecnt; ++i)
446 { 583 {
447 int fd = fdchanges [i]; 584 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 585 ANFD *anfd = anfds + fd;
449 ev_io *w; 586 ev_io *w;
450 587
451 int events = 0; 588 unsigned char events = 0;
452 589
453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 590 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454 events |= w->events; 591 events |= (unsigned char)w->events;
455 592
456#if EV_SELECT_IS_WINSOCKET 593#if EV_SELECT_IS_WINSOCKET
457 if (events) 594 if (events)
458 { 595 {
459 unsigned long argp; 596 unsigned long argp;
460 anfd->handle = _get_osfhandle (fd); 597 anfd->handle = _get_osfhandle (fd);
461 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 598 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
462 } 599 }
463#endif 600#endif
464 601
602 {
603 unsigned char o_events = anfd->events;
604 unsigned char o_reify = anfd->reify;
605
465 anfd->reify = 0; 606 anfd->reify = 0;
466
467 backend_modify (EV_A_ fd, anfd->events, events);
468 anfd->events = events; 607 anfd->events = events;
608
609 if (o_events != events || o_reify & EV_IOFDSET)
610 backend_modify (EV_A_ fd, o_events, events);
611 }
469 } 612 }
470 613
471 fdchangecnt = 0; 614 fdchangecnt = 0;
472} 615}
473 616
474static void 617void inline_size
475fd_change (EV_P_ int fd) 618fd_change (EV_P_ int fd, int flags)
476{ 619{
477 if (expect_false (anfds [fd].reify)) 620 unsigned char reify = anfds [fd].reify;
478 return;
479
480 anfds [fd].reify = 1; 621 anfds [fd].reify |= flags;
481 622
623 if (expect_true (!reify))
624 {
482 ++fdchangecnt; 625 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 626 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 627 fdchanges [fdchangecnt - 1] = fd;
628 }
485} 629}
486 630
487static void 631void inline_speed
488fd_kill (EV_P_ int fd) 632fd_kill (EV_P_ int fd)
489{ 633{
490 ev_io *w; 634 ev_io *w;
491 635
492 while ((w = (ev_io *)anfds [fd].head)) 636 while ((w = (ev_io *)anfds [fd].head))
494 ev_io_stop (EV_A_ w); 638 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 639 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 640 }
497} 641}
498 642
499inline int 643int inline_size
500fd_valid (int fd) 644fd_valid (int fd)
501{ 645{
502#ifdef _WIN32 646#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 647 return _get_osfhandle (fd) != -1;
504#else 648#else
505 return fcntl (fd, F_GETFD) != -1; 649 return fcntl (fd, F_GETFD) != -1;
506#endif 650#endif
507} 651}
508 652
509/* called on EBADF to verify fds */ 653/* called on EBADF to verify fds */
510static void 654static void noinline
511fd_ebadf (EV_P) 655fd_ebadf (EV_P)
512{ 656{
513 int fd; 657 int fd;
514 658
515 for (fd = 0; fd < anfdmax; ++fd) 659 for (fd = 0; fd < anfdmax; ++fd)
517 if (!fd_valid (fd) == -1 && errno == EBADF) 661 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 662 fd_kill (EV_A_ fd);
519} 663}
520 664
521/* called on ENOMEM in select/poll to kill some fds and retry */ 665/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 666static void noinline
523fd_enomem (EV_P) 667fd_enomem (EV_P)
524{ 668{
525 int fd; 669 int fd;
526 670
527 for (fd = anfdmax; fd--; ) 671 for (fd = anfdmax; fd--; )
531 return; 675 return;
532 } 676 }
533} 677}
534 678
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 679/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 680static void noinline
537fd_rearm_all (EV_P) 681fd_rearm_all (EV_P)
538{ 682{
539 int fd; 683 int fd;
540 684
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 685 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 686 if (anfds [fd].events)
544 { 687 {
545 anfds [fd].events = 0; 688 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 689 fd_change (EV_A_ fd, EV_IOFDSET | 1);
547 } 690 }
548} 691}
549 692
550/*****************************************************************************/ 693/*****************************************************************************/
551 694
552static void 695void inline_speed
553upheap (WT *heap, int k) 696upheap (WT *heap, int k)
554{ 697{
555 WT w = heap [k]; 698 WT w = heap [k];
556 699
557 while (k && heap [k >> 1]->at > w->at) 700 while (k)
558 { 701 {
702 int p = (k - 1) >> 1;
703
704 if (heap [p]->at <= w->at)
705 break;
706
559 heap [k] = heap [k >> 1]; 707 heap [k] = heap [p];
560 ((W)heap [k])->active = k + 1; 708 ((W)heap [k])->active = k + 1;
561 k >>= 1; 709 k = p;
562 } 710 }
563 711
564 heap [k] = w; 712 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 713 ((W)heap [k])->active = k + 1;
566
567} 714}
568 715
569static void 716void inline_speed
570downheap (WT *heap, int N, int k) 717downheap (WT *heap, int N, int k)
571{ 718{
572 WT w = heap [k]; 719 WT w = heap [k];
573 720
574 while (k < (N >> 1)) 721 for (;;)
575 { 722 {
576 int j = k << 1; 723 int c = (k << 1) + 1;
577 724
578 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 725 if (c >= N)
579 ++j;
580
581 if (w->at <= heap [j]->at)
582 break; 726 break;
583 727
728 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
729 ? 1 : 0;
730
731 if (w->at <= heap [c]->at)
732 break;
733
584 heap [k] = heap [j]; 734 heap [k] = heap [c];
585 ((W)heap [k])->active = k + 1; 735 ((W)heap [k])->active = k + 1;
736
586 k = j; 737 k = c;
587 } 738 }
588 739
589 heap [k] = w; 740 heap [k] = w;
590 ((W)heap [k])->active = k + 1; 741 ((W)heap [k])->active = k + 1;
591} 742}
592 743
593inline void 744void inline_size
594adjustheap (WT *heap, int N, int k) 745adjustheap (WT *heap, int N, int k)
595{ 746{
596 upheap (heap, k); 747 upheap (heap, k);
597 downheap (heap, N, k); 748 downheap (heap, N, k);
598} 749}
610 761
611static int sigpipe [2]; 762static int sigpipe [2];
612static sig_atomic_t volatile gotsig; 763static sig_atomic_t volatile gotsig;
613static ev_io sigev; 764static ev_io sigev;
614 765
615static void 766void inline_size
616signals_init (ANSIG *base, int count) 767signals_init (ANSIG *base, int count)
617{ 768{
618 while (count--) 769 while (count--)
619 { 770 {
620 base->head = 0; 771 base->head = 0;
640 write (sigpipe [1], &signum, 1); 791 write (sigpipe [1], &signum, 1);
641 errno = old_errno; 792 errno = old_errno;
642 } 793 }
643} 794}
644 795
645void 796void noinline
646ev_feed_signal_event (EV_P_ int signum) 797ev_feed_signal_event (EV_P_ int signum)
647{ 798{
648 WL w; 799 WL w;
649 800
650#if EV_MULTIPLICITY 801#if EV_MULTIPLICITY
673 for (signum = signalmax; signum--; ) 824 for (signum = signalmax; signum--; )
674 if (signals [signum].gotsig) 825 if (signals [signum].gotsig)
675 ev_feed_signal_event (EV_A_ signum + 1); 826 ev_feed_signal_event (EV_A_ signum + 1);
676} 827}
677 828
678static void 829void inline_speed
679fd_intern (int fd) 830fd_intern (int fd)
680{ 831{
681#ifdef _WIN32 832#ifdef _WIN32
682 int arg = 1; 833 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 834 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 836 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 837 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 838#endif
688} 839}
689 840
690static void 841static void noinline
691siginit (EV_P) 842siginit (EV_P)
692{ 843{
693 fd_intern (sigpipe [0]); 844 fd_intern (sigpipe [0]);
694 fd_intern (sigpipe [1]); 845 fd_intern (sigpipe [1]);
695 846
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 849 ev_unref (EV_A); /* child watcher should not keep loop alive */
699} 850}
700 851
701/*****************************************************************************/ 852/*****************************************************************************/
702 853
703static ev_child *childs [PID_HASHSIZE]; 854static WL childs [EV_PID_HASHSIZE];
704 855
705#ifndef _WIN32 856#ifndef _WIN32
706 857
707static ev_signal childev; 858static ev_signal childev;
859
860void inline_speed
861child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
862{
863 ev_child *w;
864
865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
866 if (w->pid == pid || !w->pid)
867 {
868 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
869 w->rpid = pid;
870 w->rstatus = status;
871 ev_feed_event (EV_A_ (W)w, EV_CHILD);
872 }
873}
708 874
709#ifndef WCONTINUED 875#ifndef WCONTINUED
710# define WCONTINUED 0 876# define WCONTINUED 0
711#endif 877#endif
712 878
713static void 879static void
714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
715{
716 ev_child *w;
717
718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
719 if (w->pid == pid || !w->pid)
720 {
721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722 w->rpid = pid;
723 w->rstatus = status;
724 ev_feed_event (EV_A_ (W)w, EV_CHILD);
725 }
726}
727
728static void
729childcb (EV_P_ ev_signal *sw, int revents) 880childcb (EV_P_ ev_signal *sw, int revents)
730{ 881{
731 int pid, status; 882 int pid, status;
732 883
884 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 885 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 886 if (!WCONTINUED
887 || errno != EINVAL
888 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
889 return;
890
735 /* make sure we are called again until all childs have been reaped */ 891 /* make sure we are called again until all childs have been reaped */
736 /* we need to do it this way so that the callback gets called before we continue */ 892 /* we need to do it this way so that the callback gets called before we continue */
737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 893 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 894
739 child_reap (EV_A_ sw, pid, pid, status); 895 child_reap (EV_A_ sw, pid, pid, status);
896 if (EV_PID_HASHSIZE > 1)
740 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 897 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741 }
742} 898}
743 899
744#endif 900#endif
745 901
746/*****************************************************************************/ 902/*****************************************************************************/
772{ 928{
773 return EV_VERSION_MINOR; 929 return EV_VERSION_MINOR;
774} 930}
775 931
776/* return true if we are running with elevated privileges and should ignore env variables */ 932/* return true if we are running with elevated privileges and should ignore env variables */
777static int 933int inline_size
778enable_secure (void) 934enable_secure (void)
779{ 935{
780#ifdef _WIN32 936#ifdef _WIN32
781 return 0; 937 return 0;
782#else 938#else
818} 974}
819 975
820unsigned int 976unsigned int
821ev_embeddable_backends (void) 977ev_embeddable_backends (void)
822{ 978{
823 return EVBACKEND_EPOLL 979 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
824 | EVBACKEND_KQUEUE 980
825 | EVBACKEND_PORT; 981 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
982 /* please fix it and tell me how to detect the fix */
983 flags &= ~EVBACKEND_EPOLL;
984
985 return flags;
826} 986}
827 987
828unsigned int 988unsigned int
829ev_backend (EV_P) 989ev_backend (EV_P)
830{ 990{
831 return backend; 991 return backend;
832} 992}
833 993
834static void 994unsigned int
995ev_loop_count (EV_P)
996{
997 return loop_count;
998}
999
1000void
1001ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 io_blocktime = interval;
1004}
1005
1006void
1007ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1008{
1009 timeout_blocktime = interval;
1010}
1011
1012static void noinline
835loop_init (EV_P_ unsigned int flags) 1013loop_init (EV_P_ unsigned int flags)
836{ 1014{
837 if (!backend) 1015 if (!backend)
838 { 1016 {
839#if EV_USE_MONOTONIC 1017#if EV_USE_MONOTONIC
847 ev_rt_now = ev_time (); 1025 ev_rt_now = ev_time ();
848 mn_now = get_clock (); 1026 mn_now = get_clock ();
849 now_floor = mn_now; 1027 now_floor = mn_now;
850 rtmn_diff = ev_rt_now - mn_now; 1028 rtmn_diff = ev_rt_now - mn_now;
851 1029
1030 io_blocktime = 0.;
1031 timeout_blocktime = 0.;
1032
1033 /* pid check not overridable via env */
1034#ifndef _WIN32
1035 if (flags & EVFLAG_FORKCHECK)
1036 curpid = getpid ();
1037#endif
1038
852 if (!(flags & EVFLAG_NOENV) 1039 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure () 1040 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS")) 1041 && getenv ("LIBEV_FLAGS"))
855 flags = atoi (getenv ("LIBEV_FLAGS")); 1042 flags = atoi (getenv ("LIBEV_FLAGS"));
856 1043
857 if (!(flags & 0x0000ffffUL)) 1044 if (!(flags & 0x0000ffffUL))
858 flags |= ev_recommended_backends (); 1045 flags |= ev_recommended_backends ();
859 1046
860 backend = 0; 1047 backend = 0;
1048 backend_fd = -1;
1049#if EV_USE_INOTIFY
1050 fs_fd = -2;
1051#endif
1052
861#if EV_USE_PORT 1053#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 1055#endif
864#if EV_USE_KQUEUE 1056#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1057 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
877 ev_init (&sigev, sigcb); 1069 ev_init (&sigev, sigcb);
878 ev_set_priority (&sigev, EV_MAXPRI); 1070 ev_set_priority (&sigev, EV_MAXPRI);
879 } 1071 }
880} 1072}
881 1073
882static void 1074static void noinline
883loop_destroy (EV_P) 1075loop_destroy (EV_P)
884{ 1076{
885 int i; 1077 int i;
1078
1079#if EV_USE_INOTIFY
1080 if (fs_fd >= 0)
1081 close (fs_fd);
1082#endif
1083
1084 if (backend_fd >= 0)
1085 close (backend_fd);
886 1086
887#if EV_USE_PORT 1087#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1088 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 1089#endif
890#if EV_USE_KQUEUE 1090#if EV_USE_KQUEUE
899#if EV_USE_SELECT 1099#if EV_USE_SELECT
900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1100 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901#endif 1101#endif
902 1102
903 for (i = NUMPRI; i--; ) 1103 for (i = NUMPRI; i--; )
1104 {
904 array_free (pending, [i]); 1105 array_free (pending, [i]);
1106#if EV_IDLE_ENABLE
1107 array_free (idle, [i]);
1108#endif
1109 }
1110
1111 ev_free (anfds); anfdmax = 0;
905 1112
906 /* have to use the microsoft-never-gets-it-right macro */ 1113 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 1114 array_free (fdchange, EMPTY);
908 array_free (timer, EMPTY0); 1115 array_free (timer, EMPTY);
909#if EV_PERIODICS 1116#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 1117 array_free (periodic, EMPTY);
911#endif 1118#endif
1119#if EV_FORK_ENABLE
912 array_free (idle, EMPTY0); 1120 array_free (fork, EMPTY);
1121#endif
913 array_free (prepare, EMPTY0); 1122 array_free (prepare, EMPTY);
914 array_free (check, EMPTY0); 1123 array_free (check, EMPTY);
915 1124
916 backend = 0; 1125 backend = 0;
917} 1126}
918 1127
919static void 1128void inline_size infy_fork (EV_P);
1129
1130void inline_size
920loop_fork (EV_P) 1131loop_fork (EV_P)
921{ 1132{
922#if EV_USE_PORT 1133#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1134 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 1135#endif
925#if EV_USE_KQUEUE 1136#if EV_USE_KQUEUE
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1137 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 1138#endif
928#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1140 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1141#endif
1142#if EV_USE_INOTIFY
1143 infy_fork (EV_A);
930#endif 1144#endif
931 1145
932 if (ev_is_active (&sigev)) 1146 if (ev_is_active (&sigev))
933 { 1147 {
934 /* default loop */ 1148 /* default loop */
1050 postfork = 1; 1264 postfork = 1;
1051} 1265}
1052 1266
1053/*****************************************************************************/ 1267/*****************************************************************************/
1054 1268
1055static int 1269void
1056any_pending (EV_P) 1270ev_invoke (EV_P_ void *w, int revents)
1057{ 1271{
1058 int pri; 1272 EV_CB_INVOKE ((W)w, revents);
1059
1060 for (pri = NUMPRI; pri--; )
1061 if (pendingcnt [pri])
1062 return 1;
1063
1064 return 0;
1065} 1273}
1066 1274
1067inline void 1275void inline_speed
1068call_pending (EV_P) 1276call_pending (EV_P)
1069{ 1277{
1070 int pri; 1278 int pri;
1071 1279
1072 for (pri = NUMPRI; pri--; ) 1280 for (pri = NUMPRI; pri--; )
1074 { 1282 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1283 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1284
1077 if (expect_true (p->w)) 1285 if (expect_true (p->w))
1078 { 1286 {
1287 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1288
1079 p->w->pending = 0; 1289 p->w->pending = 0;
1080 EV_CB_INVOKE (p->w, p->events); 1290 EV_CB_INVOKE (p->w, p->events);
1081 } 1291 }
1082 } 1292 }
1083} 1293}
1084 1294
1085inline void 1295void inline_size
1086timers_reify (EV_P) 1296timers_reify (EV_P)
1087{ 1297{
1088 while (timercnt && ((WT)timers [0])->at <= mn_now) 1298 while (timercnt && ((WT)timers [0])->at <= mn_now)
1089 { 1299 {
1090 ev_timer *w = timers [0]; 1300 ev_timer *w = (ev_timer *)timers [0];
1091 1301
1092 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1302 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1093 1303
1094 /* first reschedule or stop timer */ 1304 /* first reschedule or stop timer */
1095 if (w->repeat) 1305 if (w->repeat)
1096 { 1306 {
1097 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1307 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1098 1308
1099 ((WT)w)->at += w->repeat; 1309 ((WT)w)->at += w->repeat;
1100 if (((WT)w)->at < mn_now) 1310 if (((WT)w)->at < mn_now)
1101 ((WT)w)->at = mn_now; 1311 ((WT)w)->at = mn_now;
1102 1312
1103 downheap ((WT *)timers, timercnt, 0); 1313 downheap (timers, timercnt, 0);
1104 } 1314 }
1105 else 1315 else
1106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1107 1317
1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1318 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1109 } 1319 }
1110} 1320}
1111 1321
1112#if EV_PERIODICS 1322#if EV_PERIODIC_ENABLE
1113inline void 1323void inline_size
1114periodics_reify (EV_P) 1324periodics_reify (EV_P)
1115{ 1325{
1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1326 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1117 { 1327 {
1118 ev_periodic *w = periodics [0]; 1328 ev_periodic *w = (ev_periodic *)periodics [0];
1119 1329
1120 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1330 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1121 1331
1122 /* first reschedule or stop timer */ 1332 /* first reschedule or stop timer */
1123 if (w->reschedule_cb) 1333 if (w->reschedule_cb)
1124 { 1334 {
1125 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1335 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1126 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1336 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1127 downheap ((WT *)periodics, periodiccnt, 0); 1337 downheap (periodics, periodiccnt, 0);
1128 } 1338 }
1129 else if (w->interval) 1339 else if (w->interval)
1130 { 1340 {
1131 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1341 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1342 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1132 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1343 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1133 downheap ((WT *)periodics, periodiccnt, 0); 1344 downheap (periodics, periodiccnt, 0);
1134 } 1345 }
1135 else 1346 else
1136 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1347 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1137 1348
1138 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1349 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1139 } 1350 }
1140} 1351}
1141 1352
1142static void 1353static void noinline
1143periodics_reschedule (EV_P) 1354periodics_reschedule (EV_P)
1144{ 1355{
1145 int i; 1356 int i;
1146 1357
1147 /* adjust periodics after time jump */ 1358 /* adjust periodics after time jump */
1148 for (i = 0; i < periodiccnt; ++i) 1359 for (i = 0; i < periodiccnt; ++i)
1149 { 1360 {
1150 ev_periodic *w = periodics [i]; 1361 ev_periodic *w = (ev_periodic *)periodics [i];
1151 1362
1152 if (w->reschedule_cb) 1363 if (w->reschedule_cb)
1153 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1154 else if (w->interval) 1365 else if (w->interval)
1155 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1366 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1156 } 1367 }
1157 1368
1158 /* now rebuild the heap */ 1369 /* now rebuild the heap */
1159 for (i = periodiccnt >> 1; i--; ) 1370 for (i = periodiccnt >> 1; i--; )
1160 downheap ((WT *)periodics, periodiccnt, i); 1371 downheap (periodics, periodiccnt, i);
1161} 1372}
1162#endif 1373#endif
1163 1374
1164inline int 1375#if EV_IDLE_ENABLE
1165time_update_monotonic (EV_P) 1376void inline_size
1377idle_reify (EV_P)
1166{ 1378{
1379 if (expect_false (idleall))
1380 {
1381 int pri;
1382
1383 for (pri = NUMPRI; pri--; )
1384 {
1385 if (pendingcnt [pri])
1386 break;
1387
1388 if (idlecnt [pri])
1389 {
1390 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1391 break;
1392 }
1393 }
1394 }
1395}
1396#endif
1397
1398void inline_speed
1399time_update (EV_P_ ev_tstamp max_block)
1400{
1401 int i;
1402
1403#if EV_USE_MONOTONIC
1404 if (expect_true (have_monotonic))
1405 {
1406 ev_tstamp odiff = rtmn_diff;
1407
1167 mn_now = get_clock (); 1408 mn_now = get_clock ();
1168 1409
1410 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1411 /* interpolate in the meantime */
1169 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1412 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1170 { 1413 {
1171 ev_rt_now = rtmn_diff + mn_now; 1414 ev_rt_now = rtmn_diff + mn_now;
1172 return 0; 1415 return;
1173 } 1416 }
1174 else 1417
1175 {
1176 now_floor = mn_now; 1418 now_floor = mn_now;
1177 ev_rt_now = ev_time (); 1419 ev_rt_now = ev_time ();
1178 return 1;
1179 }
1180}
1181 1420
1182inline void 1421 /* loop a few times, before making important decisions.
1183time_update (EV_P) 1422 * on the choice of "4": one iteration isn't enough,
1184{ 1423 * in case we get preempted during the calls to
1185 int i; 1424 * ev_time and get_clock. a second call is almost guaranteed
1186 1425 * to succeed in that case, though. and looping a few more times
1187#if EV_USE_MONOTONIC 1426 * doesn't hurt either as we only do this on time-jumps or
1188 if (expect_true (have_monotonic)) 1427 * in the unlikely event of having been preempted here.
1189 { 1428 */
1190 if (time_update_monotonic (EV_A)) 1429 for (i = 4; --i; )
1191 { 1430 {
1192 ev_tstamp odiff = rtmn_diff;
1193
1194 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1195 {
1196 rtmn_diff = ev_rt_now - mn_now; 1431 rtmn_diff = ev_rt_now - mn_now;
1197 1432
1198 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1433 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1199 return; /* all is well */ 1434 return; /* all is well */
1200 1435
1201 ev_rt_now = ev_time (); 1436 ev_rt_now = ev_time ();
1202 mn_now = get_clock (); 1437 mn_now = get_clock ();
1203 now_floor = mn_now; 1438 now_floor = mn_now;
1204 } 1439 }
1205 1440
1206# if EV_PERIODICS 1441# if EV_PERIODIC_ENABLE
1442 periodics_reschedule (EV_A);
1443# endif
1444 /* no timer adjustment, as the monotonic clock doesn't jump */
1445 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1446 }
1447 else
1448#endif
1449 {
1450 ev_rt_now = ev_time ();
1451
1452 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1453 {
1454#if EV_PERIODIC_ENABLE
1207 periodics_reschedule (EV_A); 1455 periodics_reschedule (EV_A);
1208# endif 1456#endif
1209 /* no timer adjustment, as the monotonic clock doesn't jump */
1210 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1211 }
1212 }
1213 else
1214#endif
1215 {
1216 ev_rt_now = ev_time ();
1217
1218 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1219 {
1220#if EV_PERIODICS
1221 periodics_reschedule (EV_A);
1222#endif
1223
1224 /* adjust timers. this is easy, as the offset is the same for all */ 1457 /* adjust timers. this is easy, as the offset is the same for all of them */
1225 for (i = 0; i < timercnt; ++i) 1458 for (i = 0; i < timercnt; ++i)
1226 ((WT)timers [i])->at += ev_rt_now - mn_now; 1459 ((WT)timers [i])->at += ev_rt_now - mn_now;
1227 } 1460 }
1228 1461
1229 mn_now = ev_rt_now; 1462 mn_now = ev_rt_now;
1249{ 1482{
1250 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1483 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1251 ? EVUNLOOP_ONE 1484 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL; 1485 : EVUNLOOP_CANCEL;
1253 1486
1254 while (activecnt) 1487 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1488
1489 do
1255 { 1490 {
1491#ifndef _WIN32
1492 if (expect_false (curpid)) /* penalise the forking check even more */
1493 if (expect_false (getpid () != curpid))
1494 {
1495 curpid = getpid ();
1496 postfork = 1;
1497 }
1498#endif
1499
1500#if EV_FORK_ENABLE
1501 /* we might have forked, so queue fork handlers */
1502 if (expect_false (postfork))
1503 if (forkcnt)
1504 {
1505 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1506 call_pending (EV_A);
1507 }
1508#endif
1509
1256 /* queue check watchers (and execute them) */ 1510 /* queue prepare watchers (and execute them) */
1257 if (expect_false (preparecnt)) 1511 if (expect_false (preparecnt))
1258 { 1512 {
1259 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1513 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1260 call_pending (EV_A); 1514 call_pending (EV_A);
1261 } 1515 }
1262 1516
1517 if (expect_false (!activecnt))
1518 break;
1519
1263 /* we might have forked, so reify kernel state if necessary */ 1520 /* we might have forked, so reify kernel state if necessary */
1264 if (expect_false (postfork)) 1521 if (expect_false (postfork))
1265 loop_fork (EV_A); 1522 loop_fork (EV_A);
1266 1523
1267 /* update fd-related kernel structures */ 1524 /* update fd-related kernel structures */
1268 fd_reify (EV_A); 1525 fd_reify (EV_A);
1269 1526
1270 /* calculate blocking time */ 1527 /* calculate blocking time */
1271 { 1528 {
1272 double block; 1529 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.;
1273 1531
1274 if (flags & EVLOOP_NONBLOCK || idlecnt) 1532 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1275 block = 0.; /* do not block at all */
1276 else
1277 { 1533 {
1278 /* update time to cancel out callback processing overhead */ 1534 /* update time to cancel out callback processing overhead */
1279#if EV_USE_MONOTONIC
1280 if (expect_true (have_monotonic))
1281 time_update_monotonic (EV_A); 1535 time_update (EV_A_ 1e100);
1282 else
1283#endif
1284 {
1285 ev_rt_now = ev_time ();
1286 mn_now = ev_rt_now;
1287 }
1288 1536
1289 block = MAX_BLOCKTIME; 1537 waittime = MAX_BLOCKTIME;
1290 1538
1291 if (timercnt) 1539 if (timercnt)
1292 { 1540 {
1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1294 if (block > to) block = to; 1542 if (waittime > to) waittime = to;
1295 } 1543 }
1296 1544
1297#if EV_PERIODICS 1545#if EV_PERIODIC_ENABLE
1298 if (periodiccnt) 1546 if (periodiccnt)
1299 { 1547 {
1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1548 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1301 if (block > to) block = to; 1549 if (waittime > to) waittime = to;
1302 } 1550 }
1303#endif 1551#endif
1304 1552
1305 if (expect_false (block < 0.)) block = 0.; 1553 if (expect_false (waittime < timeout_blocktime))
1554 waittime = timeout_blocktime;
1555
1556 sleeptime = waittime - backend_fudge;
1557
1558 if (expect_true (sleeptime > io_blocktime))
1559 sleeptime = io_blocktime;
1560
1561 if (sleeptime)
1562 {
1563 ev_sleep (sleeptime);
1564 waittime -= sleeptime;
1565 }
1306 } 1566 }
1307 1567
1568 ++loop_count;
1308 backend_poll (EV_A_ block); 1569 backend_poll (EV_A_ waittime);
1570
1571 /* update ev_rt_now, do magic */
1572 time_update (EV_A_ waittime + sleeptime);
1309 } 1573 }
1310
1311 /* update ev_rt_now, do magic */
1312 time_update (EV_A);
1313 1574
1314 /* queue pending timers and reschedule them */ 1575 /* queue pending timers and reschedule them */
1315 timers_reify (EV_A); /* relative timers called last */ 1576 timers_reify (EV_A); /* relative timers called last */
1316#if EV_PERIODICS 1577#if EV_PERIODIC_ENABLE
1317 periodics_reify (EV_A); /* absolute timers called first */ 1578 periodics_reify (EV_A); /* absolute timers called first */
1318#endif 1579#endif
1319 1580
1581#if EV_IDLE_ENABLE
1320 /* queue idle watchers unless other events are pending */ 1582 /* queue idle watchers unless other events are pending */
1321 if (idlecnt && !any_pending (EV_A)) 1583 idle_reify (EV_A);
1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1584#endif
1323 1585
1324 /* queue check watchers, to be executed first */ 1586 /* queue check watchers, to be executed first */
1325 if (expect_false (checkcnt)) 1587 if (expect_false (checkcnt))
1326 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1588 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327 1589
1328 call_pending (EV_A); 1590 call_pending (EV_A);
1329 1591
1330 if (expect_false (loop_done))
1331 break;
1332 } 1592 }
1593 while (expect_true (activecnt && !loop_done));
1333 1594
1334 if (loop_done == EVUNLOOP_ONE) 1595 if (loop_done == EVUNLOOP_ONE)
1335 loop_done = EVUNLOOP_CANCEL; 1596 loop_done = EVUNLOOP_CANCEL;
1336} 1597}
1337 1598
1341 loop_done = how; 1602 loop_done = how;
1342} 1603}
1343 1604
1344/*****************************************************************************/ 1605/*****************************************************************************/
1345 1606
1346inline void 1607void inline_size
1347wlist_add (WL *head, WL elem) 1608wlist_add (WL *head, WL elem)
1348{ 1609{
1349 elem->next = *head; 1610 elem->next = *head;
1350 *head = elem; 1611 *head = elem;
1351} 1612}
1352 1613
1353inline void 1614void inline_size
1354wlist_del (WL *head, WL elem) 1615wlist_del (WL *head, WL elem)
1355{ 1616{
1356 while (*head) 1617 while (*head)
1357 { 1618 {
1358 if (*head == elem) 1619 if (*head == elem)
1363 1624
1364 head = &(*head)->next; 1625 head = &(*head)->next;
1365 } 1626 }
1366} 1627}
1367 1628
1368inline void 1629void inline_speed
1369ev_clear_pending (EV_P_ W w) 1630clear_pending (EV_P_ W w)
1370{ 1631{
1371 if (w->pending) 1632 if (w->pending)
1372 { 1633 {
1373 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1634 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374 w->pending = 0; 1635 w->pending = 0;
1375 } 1636 }
1376} 1637}
1377 1638
1378inline void 1639int
1640ev_clear_pending (EV_P_ void *w)
1641{
1642 W w_ = (W)w;
1643 int pending = w_->pending;
1644
1645 if (expect_true (pending))
1646 {
1647 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1648 w_->pending = 0;
1649 p->w = 0;
1650 return p->events;
1651 }
1652 else
1653 return 0;
1654}
1655
1656void inline_size
1657pri_adjust (EV_P_ W w)
1658{
1659 int pri = w->priority;
1660 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1661 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1662 w->priority = pri;
1663}
1664
1665void inline_speed
1379ev_start (EV_P_ W w, int active) 1666ev_start (EV_P_ W w, int active)
1380{ 1667{
1381 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1668 pri_adjust (EV_A_ w);
1382 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384 w->active = active; 1669 w->active = active;
1385 ev_ref (EV_A); 1670 ev_ref (EV_A);
1386} 1671}
1387 1672
1388inline void 1673void inline_size
1389ev_stop (EV_P_ W w) 1674ev_stop (EV_P_ W w)
1390{ 1675{
1391 ev_unref (EV_A); 1676 ev_unref (EV_A);
1392 w->active = 0; 1677 w->active = 0;
1393} 1678}
1394 1679
1395/*****************************************************************************/ 1680/*****************************************************************************/
1396 1681
1397void 1682void noinline
1398ev_io_start (EV_P_ ev_io *w) 1683ev_io_start (EV_P_ ev_io *w)
1399{ 1684{
1400 int fd = w->fd; 1685 int fd = w->fd;
1401 1686
1402 if (expect_false (ev_is_active (w))) 1687 if (expect_false (ev_is_active (w)))
1404 1689
1405 assert (("ev_io_start called with negative fd", fd >= 0)); 1690 assert (("ev_io_start called with negative fd", fd >= 0));
1406 1691
1407 ev_start (EV_A_ (W)w, 1); 1692 ev_start (EV_A_ (W)w, 1);
1408 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1693 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1694 wlist_add (&anfds[fd].head, (WL)w);
1410 1695
1411 fd_change (EV_A_ fd); 1696 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1697 w->events &= ~EV_IOFDSET;
1412} 1698}
1413 1699
1414void 1700void noinline
1415ev_io_stop (EV_P_ ev_io *w) 1701ev_io_stop (EV_P_ ev_io *w)
1416{ 1702{
1417 ev_clear_pending (EV_A_ (W)w); 1703 clear_pending (EV_A_ (W)w);
1418 if (expect_false (!ev_is_active (w))) 1704 if (expect_false (!ev_is_active (w)))
1419 return; 1705 return;
1420 1706
1421 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1707 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422 1708
1423 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1709 wlist_del (&anfds[w->fd].head, (WL)w);
1424 ev_stop (EV_A_ (W)w); 1710 ev_stop (EV_A_ (W)w);
1425 1711
1426 fd_change (EV_A_ w->fd); 1712 fd_change (EV_A_ w->fd, 1);
1427} 1713}
1428 1714
1429void 1715void noinline
1430ev_timer_start (EV_P_ ev_timer *w) 1716ev_timer_start (EV_P_ ev_timer *w)
1431{ 1717{
1432 if (expect_false (ev_is_active (w))) 1718 if (expect_false (ev_is_active (w)))
1433 return; 1719 return;
1434 1720
1435 ((WT)w)->at += mn_now; 1721 ((WT)w)->at += mn_now;
1436 1722
1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1723 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438 1724
1439 ev_start (EV_A_ (W)w, ++timercnt); 1725 ev_start (EV_A_ (W)w, ++timercnt);
1440 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1726 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1441 timers [timercnt - 1] = w; 1727 timers [timercnt - 1] = (WT)w;
1442 upheap ((WT *)timers, timercnt - 1); 1728 upheap (timers, timercnt - 1);
1443 1729
1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1730 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1445} 1731}
1446 1732
1447void 1733void noinline
1448ev_timer_stop (EV_P_ ev_timer *w) 1734ev_timer_stop (EV_P_ ev_timer *w)
1449{ 1735{
1450 ev_clear_pending (EV_A_ (W)w); 1736 clear_pending (EV_A_ (W)w);
1451 if (expect_false (!ev_is_active (w))) 1737 if (expect_false (!ev_is_active (w)))
1452 return; 1738 return;
1453 1739
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1740 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1455 1741
1742 {
1743 int active = ((W)w)->active;
1744
1456 if (expect_true (((W)w)->active < timercnt--)) 1745 if (expect_true (--active < --timercnt))
1457 { 1746 {
1458 timers [((W)w)->active - 1] = timers [timercnt]; 1747 timers [active] = timers [timercnt];
1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1748 adjustheap (timers, timercnt, active);
1460 } 1749 }
1750 }
1461 1751
1462 ((WT)w)->at -= mn_now; 1752 ((WT)w)->at -= mn_now;
1463 1753
1464 ev_stop (EV_A_ (W)w); 1754 ev_stop (EV_A_ (W)w);
1465} 1755}
1466 1756
1467void 1757void noinline
1468ev_timer_again (EV_P_ ev_timer *w) 1758ev_timer_again (EV_P_ ev_timer *w)
1469{ 1759{
1470 if (ev_is_active (w)) 1760 if (ev_is_active (w))
1471 { 1761 {
1472 if (w->repeat) 1762 if (w->repeat)
1473 { 1763 {
1474 ((WT)w)->at = mn_now + w->repeat; 1764 ((WT)w)->at = mn_now + w->repeat;
1475 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1765 adjustheap (timers, timercnt, ((W)w)->active - 1);
1476 } 1766 }
1477 else 1767 else
1478 ev_timer_stop (EV_A_ w); 1768 ev_timer_stop (EV_A_ w);
1479 } 1769 }
1480 else if (w->repeat) 1770 else if (w->repeat)
1482 w->at = w->repeat; 1772 w->at = w->repeat;
1483 ev_timer_start (EV_A_ w); 1773 ev_timer_start (EV_A_ w);
1484 } 1774 }
1485} 1775}
1486 1776
1487#if EV_PERIODICS 1777#if EV_PERIODIC_ENABLE
1488void 1778void noinline
1489ev_periodic_start (EV_P_ ev_periodic *w) 1779ev_periodic_start (EV_P_ ev_periodic *w)
1490{ 1780{
1491 if (expect_false (ev_is_active (w))) 1781 if (expect_false (ev_is_active (w)))
1492 return; 1782 return;
1493 1783
1495 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1785 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1496 else if (w->interval) 1786 else if (w->interval)
1497 { 1787 {
1498 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1788 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1499 /* this formula differs from the one in periodic_reify because we do not always round up */ 1789 /* this formula differs from the one in periodic_reify because we do not always round up */
1500 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1790 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501 } 1791 }
1792 else
1793 ((WT)w)->at = w->offset;
1502 1794
1503 ev_start (EV_A_ (W)w, ++periodiccnt); 1795 ev_start (EV_A_ (W)w, ++periodiccnt);
1504 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1796 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1505 periodics [periodiccnt - 1] = w; 1797 periodics [periodiccnt - 1] = (WT)w;
1506 upheap ((WT *)periodics, periodiccnt - 1); 1798 upheap (periodics, periodiccnt - 1);
1507 1799
1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1800 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509} 1801}
1510 1802
1511void 1803void noinline
1512ev_periodic_stop (EV_P_ ev_periodic *w) 1804ev_periodic_stop (EV_P_ ev_periodic *w)
1513{ 1805{
1514 ev_clear_pending (EV_A_ (W)w); 1806 clear_pending (EV_A_ (W)w);
1515 if (expect_false (!ev_is_active (w))) 1807 if (expect_false (!ev_is_active (w)))
1516 return; 1808 return;
1517 1809
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1810 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1519 1811
1812 {
1813 int active = ((W)w)->active;
1814
1520 if (expect_true (((W)w)->active < periodiccnt--)) 1815 if (expect_true (--active < --periodiccnt))
1521 { 1816 {
1522 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1817 periodics [active] = periodics [periodiccnt];
1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1818 adjustheap (periodics, periodiccnt, active);
1524 } 1819 }
1820 }
1525 1821
1526 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1527} 1823}
1528 1824
1529void 1825void noinline
1530ev_periodic_again (EV_P_ ev_periodic *w) 1826ev_periodic_again (EV_P_ ev_periodic *w)
1531{ 1827{
1532 /* TODO: use adjustheap and recalculation */ 1828 /* TODO: use adjustheap and recalculation */
1533 ev_periodic_stop (EV_A_ w); 1829 ev_periodic_stop (EV_A_ w);
1534 ev_periodic_start (EV_A_ w); 1830 ev_periodic_start (EV_A_ w);
1535} 1831}
1536#endif 1832#endif
1537 1833
1538void
1539ev_idle_start (EV_P_ ev_idle *w)
1540{
1541 if (expect_false (ev_is_active (w)))
1542 return;
1543
1544 ev_start (EV_A_ (W)w, ++idlecnt);
1545 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546 idles [idlecnt - 1] = w;
1547}
1548
1549void
1550ev_idle_stop (EV_P_ ev_idle *w)
1551{
1552 ev_clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w)))
1554 return;
1555
1556 idles [((W)w)->active - 1] = idles [--idlecnt];
1557 ev_stop (EV_A_ (W)w);
1558}
1559
1560void
1561ev_prepare_start (EV_P_ ev_prepare *w)
1562{
1563 if (expect_false (ev_is_active (w)))
1564 return;
1565
1566 ev_start (EV_A_ (W)w, ++preparecnt);
1567 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568 prepares [preparecnt - 1] = w;
1569}
1570
1571void
1572ev_prepare_stop (EV_P_ ev_prepare *w)
1573{
1574 ev_clear_pending (EV_A_ (W)w);
1575 if (expect_false (!ev_is_active (w)))
1576 return;
1577
1578 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579 ev_stop (EV_A_ (W)w);
1580}
1581
1582void
1583ev_check_start (EV_P_ ev_check *w)
1584{
1585 if (expect_false (ev_is_active (w)))
1586 return;
1587
1588 ev_start (EV_A_ (W)w, ++checkcnt);
1589 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590 checks [checkcnt - 1] = w;
1591}
1592
1593void
1594ev_check_stop (EV_P_ ev_check *w)
1595{
1596 ev_clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w)))
1598 return;
1599
1600 checks [((W)w)->active - 1] = checks [--checkcnt];
1601 ev_stop (EV_A_ (W)w);
1602}
1603
1604#ifndef SA_RESTART 1834#ifndef SA_RESTART
1605# define SA_RESTART 0 1835# define SA_RESTART 0
1606#endif 1836#endif
1607 1837
1608void 1838void noinline
1609ev_signal_start (EV_P_ ev_signal *w) 1839ev_signal_start (EV_P_ ev_signal *w)
1610{ 1840{
1611#if EV_MULTIPLICITY 1841#if EV_MULTIPLICITY
1612 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1842 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613#endif 1843#endif
1614 if (expect_false (ev_is_active (w))) 1844 if (expect_false (ev_is_active (w)))
1615 return; 1845 return;
1616 1846
1617 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1847 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1618 1848
1849 {
1850#ifndef _WIN32
1851 sigset_t full, prev;
1852 sigfillset (&full);
1853 sigprocmask (SIG_SETMASK, &full, &prev);
1854#endif
1855
1856 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1857
1858#ifndef _WIN32
1859 sigprocmask (SIG_SETMASK, &prev, 0);
1860#endif
1861 }
1862
1619 ev_start (EV_A_ (W)w, 1); 1863 ev_start (EV_A_ (W)w, 1);
1620 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1621 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1864 wlist_add (&signals [w->signum - 1].head, (WL)w);
1622 1865
1623 if (!((WL)w)->next) 1866 if (!((WL)w)->next)
1624 { 1867 {
1625#if _WIN32 1868#if _WIN32
1626 signal (w->signum, sighandler); 1869 signal (w->signum, sighandler);
1632 sigaction (w->signum, &sa, 0); 1875 sigaction (w->signum, &sa, 0);
1633#endif 1876#endif
1634 } 1877 }
1635} 1878}
1636 1879
1637void 1880void noinline
1638ev_signal_stop (EV_P_ ev_signal *w) 1881ev_signal_stop (EV_P_ ev_signal *w)
1639{ 1882{
1640 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w))) 1884 if (expect_false (!ev_is_active (w)))
1642 return; 1885 return;
1643 1886
1644 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1887 wlist_del (&signals [w->signum - 1].head, (WL)w);
1645 ev_stop (EV_A_ (W)w); 1888 ev_stop (EV_A_ (W)w);
1646 1889
1647 if (!signals [w->signum - 1].head) 1890 if (!signals [w->signum - 1].head)
1648 signal (w->signum, SIG_DFL); 1891 signal (w->signum, SIG_DFL);
1649} 1892}
1656#endif 1899#endif
1657 if (expect_false (ev_is_active (w))) 1900 if (expect_false (ev_is_active (w)))
1658 return; 1901 return;
1659 1902
1660 ev_start (EV_A_ (W)w, 1); 1903 ev_start (EV_A_ (W)w, 1);
1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1904 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662} 1905}
1663 1906
1664void 1907void
1665ev_child_stop (EV_P_ ev_child *w) 1908ev_child_stop (EV_P_ ev_child *w)
1666{ 1909{
1667 ev_clear_pending (EV_A_ (W)w); 1910 clear_pending (EV_A_ (W)w);
1668 if (expect_false (!ev_is_active (w))) 1911 if (expect_false (!ev_is_active (w)))
1669 return; 1912 return;
1670 1913
1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1914 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672 ev_stop (EV_A_ (W)w); 1915 ev_stop (EV_A_ (W)w);
1673} 1916}
1674 1917
1675#if EV_MULTIPLICITY 1918#if EV_STAT_ENABLE
1919
1920# ifdef _WIN32
1921# undef lstat
1922# define lstat(a,b) _stati64 (a,b)
1923# endif
1924
1925#define DEF_STAT_INTERVAL 5.0074891
1926#define MIN_STAT_INTERVAL 0.1074891
1927
1928static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1929
1930#if EV_USE_INOTIFY
1931# define EV_INOTIFY_BUFSIZE 8192
1932
1933static void noinline
1934infy_add (EV_P_ ev_stat *w)
1935{
1936 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);
1937
1938 if (w->wd < 0)
1939 {
1940 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1941
1942 /* monitor some parent directory for speedup hints */
1943 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1944 {
1945 char path [4096];
1946 strcpy (path, w->path);
1947
1948 do
1949 {
1950 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1951 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1952
1953 char *pend = strrchr (path, '/');
1954
1955 if (!pend)
1956 break; /* whoops, no '/', complain to your admin */
1957
1958 *pend = 0;
1959 w->wd = inotify_add_watch (fs_fd, path, mask);
1960 }
1961 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1962 }
1963 }
1964 else
1965 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1966
1967 if (w->wd >= 0)
1968 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1969}
1970
1971static void noinline
1972infy_del (EV_P_ ev_stat *w)
1973{
1974 int slot;
1975 int wd = w->wd;
1976
1977 if (wd < 0)
1978 return;
1979
1980 w->wd = -2;
1981 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1982 wlist_del (&fs_hash [slot].head, (WL)w);
1983
1984 /* remove this watcher, if others are watching it, they will rearm */
1985 inotify_rm_watch (fs_fd, wd);
1986}
1987
1988static void noinline
1989infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1990{
1991 if (slot < 0)
1992 /* overflow, need to check for all hahs slots */
1993 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1994 infy_wd (EV_A_ slot, wd, ev);
1995 else
1996 {
1997 WL w_;
1998
1999 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2000 {
2001 ev_stat *w = (ev_stat *)w_;
2002 w_ = w_->next; /* lets us remove this watcher and all before it */
2003
2004 if (w->wd == wd || wd == -1)
2005 {
2006 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2007 {
2008 w->wd = -1;
2009 infy_add (EV_A_ w); /* re-add, no matter what */
2010 }
2011
2012 stat_timer_cb (EV_A_ &w->timer, 0);
2013 }
2014 }
2015 }
2016}
2017
2018static void
2019infy_cb (EV_P_ ev_io *w, int revents)
2020{
2021 char buf [EV_INOTIFY_BUFSIZE];
2022 struct inotify_event *ev = (struct inotify_event *)buf;
2023 int ofs;
2024 int len = read (fs_fd, buf, sizeof (buf));
2025
2026 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2027 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2028}
2029
2030void inline_size
2031infy_init (EV_P)
2032{
2033 if (fs_fd != -2)
2034 return;
2035
2036 fs_fd = inotify_init ();
2037
2038 if (fs_fd >= 0)
2039 {
2040 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2041 ev_set_priority (&fs_w, EV_MAXPRI);
2042 ev_io_start (EV_A_ &fs_w);
2043 }
2044}
2045
2046void inline_size
2047infy_fork (EV_P)
2048{
2049 int slot;
2050
2051 if (fs_fd < 0)
2052 return;
2053
2054 close (fs_fd);
2055 fs_fd = inotify_init ();
2056
2057 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2058 {
2059 WL w_ = fs_hash [slot].head;
2060 fs_hash [slot].head = 0;
2061
2062 while (w_)
2063 {
2064 ev_stat *w = (ev_stat *)w_;
2065 w_ = w_->next; /* lets us add this watcher */
2066
2067 w->wd = -1;
2068
2069 if (fs_fd >= 0)
2070 infy_add (EV_A_ w); /* re-add, no matter what */
2071 else
2072 ev_timer_start (EV_A_ &w->timer);
2073 }
2074
2075 }
2076}
2077
2078#endif
2079
1676void 2080void
2081ev_stat_stat (EV_P_ ev_stat *w)
2082{
2083 if (lstat (w->path, &w->attr) < 0)
2084 w->attr.st_nlink = 0;
2085 else if (!w->attr.st_nlink)
2086 w->attr.st_nlink = 1;
2087}
2088
2089static void noinline
2090stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2091{
2092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2093
2094 /* we copy this here each the time so that */
2095 /* prev has the old value when the callback gets invoked */
2096 w->prev = w->attr;
2097 ev_stat_stat (EV_A_ w);
2098
2099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2100 if (
2101 w->prev.st_dev != w->attr.st_dev
2102 || w->prev.st_ino != w->attr.st_ino
2103 || w->prev.st_mode != w->attr.st_mode
2104 || w->prev.st_nlink != w->attr.st_nlink
2105 || w->prev.st_uid != w->attr.st_uid
2106 || w->prev.st_gid != w->attr.st_gid
2107 || w->prev.st_rdev != w->attr.st_rdev
2108 || w->prev.st_size != w->attr.st_size
2109 || w->prev.st_atime != w->attr.st_atime
2110 || w->prev.st_mtime != w->attr.st_mtime
2111 || w->prev.st_ctime != w->attr.st_ctime
2112 ) {
2113 #if EV_USE_INOTIFY
2114 infy_del (EV_A_ w);
2115 infy_add (EV_A_ w);
2116 ev_stat_stat (EV_A_ w); /* avoid race... */
2117 #endif
2118
2119 ev_feed_event (EV_A_ w, EV_STAT);
2120 }
2121}
2122
2123void
2124ev_stat_start (EV_P_ ev_stat *w)
2125{
2126 if (expect_false (ev_is_active (w)))
2127 return;
2128
2129 /* since we use memcmp, we need to clear any padding data etc. */
2130 memset (&w->prev, 0, sizeof (ev_statdata));
2131 memset (&w->attr, 0, sizeof (ev_statdata));
2132
2133 ev_stat_stat (EV_A_ w);
2134
2135 if (w->interval < MIN_STAT_INTERVAL)
2136 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2137
2138 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2139 ev_set_priority (&w->timer, ev_priority (w));
2140
2141#if EV_USE_INOTIFY
2142 infy_init (EV_A);
2143
2144 if (fs_fd >= 0)
2145 infy_add (EV_A_ w);
2146 else
2147#endif
2148 ev_timer_start (EV_A_ &w->timer);
2149
2150 ev_start (EV_A_ (W)w, 1);
2151}
2152
2153void
2154ev_stat_stop (EV_P_ ev_stat *w)
2155{
2156 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w)))
2158 return;
2159
2160#if EV_USE_INOTIFY
2161 infy_del (EV_A_ w);
2162#endif
2163 ev_timer_stop (EV_A_ &w->timer);
2164
2165 ev_stop (EV_A_ (W)w);
2166}
2167#endif
2168
2169#if EV_IDLE_ENABLE
2170void
2171ev_idle_start (EV_P_ ev_idle *w)
2172{
2173 if (expect_false (ev_is_active (w)))
2174 return;
2175
2176 pri_adjust (EV_A_ (W)w);
2177
2178 {
2179 int active = ++idlecnt [ABSPRI (w)];
2180
2181 ++idleall;
2182 ev_start (EV_A_ (W)w, active);
2183
2184 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2185 idles [ABSPRI (w)][active - 1] = w;
2186 }
2187}
2188
2189void
2190ev_idle_stop (EV_P_ ev_idle *w)
2191{
2192 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w)))
2194 return;
2195
2196 {
2197 int active = ((W)w)->active;
2198
2199 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2200 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2201
2202 ev_stop (EV_A_ (W)w);
2203 --idleall;
2204 }
2205}
2206#endif
2207
2208void
2209ev_prepare_start (EV_P_ ev_prepare *w)
2210{
2211 if (expect_false (ev_is_active (w)))
2212 return;
2213
2214 ev_start (EV_A_ (W)w, ++preparecnt);
2215 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2216 prepares [preparecnt - 1] = w;
2217}
2218
2219void
2220ev_prepare_stop (EV_P_ ev_prepare *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226 {
2227 int active = ((W)w)->active;
2228 prepares [active - 1] = prepares [--preparecnt];
2229 ((W)prepares [active - 1])->active = active;
2230 }
2231
2232 ev_stop (EV_A_ (W)w);
2233}
2234
2235void
2236ev_check_start (EV_P_ ev_check *w)
2237{
2238 if (expect_false (ev_is_active (w)))
2239 return;
2240
2241 ev_start (EV_A_ (W)w, ++checkcnt);
2242 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2243 checks [checkcnt - 1] = w;
2244}
2245
2246void
2247ev_check_stop (EV_P_ ev_check *w)
2248{
2249 clear_pending (EV_A_ (W)w);
2250 if (expect_false (!ev_is_active (w)))
2251 return;
2252
2253 {
2254 int active = ((W)w)->active;
2255 checks [active - 1] = checks [--checkcnt];
2256 ((W)checks [active - 1])->active = active;
2257 }
2258
2259 ev_stop (EV_A_ (W)w);
2260}
2261
2262#if EV_EMBED_ENABLE
2263void noinline
1677ev_embed_sweep (EV_P_ ev_embed *w) 2264ev_embed_sweep (EV_P_ ev_embed *w)
1678{ 2265{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK); 2266 ev_loop (w->other, EVLOOP_NONBLOCK);
1680} 2267}
1681 2268
1682static void 2269static void
1683embed_cb (EV_P_ ev_io *io, int revents) 2270embed_io_cb (EV_P_ ev_io *io, int revents)
1684{ 2271{
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2272 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686 2273
1687 if (ev_cb (w)) 2274 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2275 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else 2276 else
1690 ev_embed_sweep (loop, w); 2277 ev_loop (w->other, EVLOOP_NONBLOCK);
1691} 2278}
2279
2280static void
2281embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2282{
2283 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2284
2285 {
2286 struct ev_loop *loop = w->other;
2287
2288 while (fdchangecnt)
2289 {
2290 fd_reify (EV_A);
2291 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2292 }
2293 }
2294}
2295
2296#if 0
2297static void
2298embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2299{
2300 ev_idle_stop (EV_A_ idle);
2301}
2302#endif
1692 2303
1693void 2304void
1694ev_embed_start (EV_P_ ev_embed *w) 2305ev_embed_start (EV_P_ ev_embed *w)
1695{ 2306{
1696 if (expect_false (ev_is_active (w))) 2307 if (expect_false (ev_is_active (w)))
1697 return; 2308 return;
1698 2309
1699 { 2310 {
1700 struct ev_loop *loop = w->loop; 2311 struct ev_loop *loop = w->other;
1701 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2312 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2313 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1703 } 2314 }
1704 2315
1705 ev_set_priority (&w->io, ev_priority (w)); 2316 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io); 2317 ev_io_start (EV_A_ &w->io);
2318
2319 ev_prepare_init (&w->prepare, embed_prepare_cb);
2320 ev_set_priority (&w->prepare, EV_MINPRI);
2321 ev_prepare_start (EV_A_ &w->prepare);
2322
2323 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2324
1707 ev_start (EV_A_ (W)w, 1); 2325 ev_start (EV_A_ (W)w, 1);
1708} 2326}
1709 2327
1710void 2328void
1711ev_embed_stop (EV_P_ ev_embed *w) 2329ev_embed_stop (EV_P_ ev_embed *w)
1712{ 2330{
1713 ev_clear_pending (EV_A_ (W)w); 2331 clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w))) 2332 if (expect_false (!ev_is_active (w)))
1715 return; 2333 return;
1716 2334
1717 ev_io_stop (EV_A_ &w->io); 2335 ev_io_stop (EV_A_ &w->io);
2336 ev_prepare_stop (EV_A_ &w->prepare);
2337
2338 ev_stop (EV_A_ (W)w);
2339}
2340#endif
2341
2342#if EV_FORK_ENABLE
2343void
2344ev_fork_start (EV_P_ ev_fork *w)
2345{
2346 if (expect_false (ev_is_active (w)))
2347 return;
2348
2349 ev_start (EV_A_ (W)w, ++forkcnt);
2350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2351 forks [forkcnt - 1] = w;
2352}
2353
2354void
2355ev_fork_stop (EV_P_ ev_fork *w)
2356{
2357 clear_pending (EV_A_ (W)w);
2358 if (expect_false (!ev_is_active (w)))
2359 return;
2360
2361 {
2362 int active = ((W)w)->active;
2363 forks [active - 1] = forks [--forkcnt];
2364 ((W)forks [active - 1])->active = active;
2365 }
2366
1718 ev_stop (EV_A_ (W)w); 2367 ev_stop (EV_A_ (W)w);
1719} 2368}
1720#endif 2369#endif
1721 2370
1722/*****************************************************************************/ 2371/*****************************************************************************/
1781 ev_timer_set (&once->to, timeout, 0.); 2430 ev_timer_set (&once->to, timeout, 0.);
1782 ev_timer_start (EV_A_ &once->to); 2431 ev_timer_start (EV_A_ &once->to);
1783 } 2432 }
1784} 2433}
1785 2434
2435#if EV_MULTIPLICITY
2436 #include "ev_wrap.h"
2437#endif
2438
1786#ifdef __cplusplus 2439#ifdef __cplusplus
1787} 2440}
1788#endif 2441#endif
1789 2442

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