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Comparing libev/ev.c (file contents):
Revision 1.137 by root, Sat Nov 24 08:28:10 2007 UTC vs.
Revision 1.195 by root, Sat Dec 22 11:44:51 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/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
212 288
213#ifdef _WIN32 289#ifdef _WIN32
214# include "ev_win32.c" 290# include "ev_win32.c"
215#endif 291#endif
216 292
217/*****************************************************************************/ 293/*****************************************************************************/
218 294
219static void (*syserr_cb)(const char *msg); 295static void (*syserr_cb)(const char *msg);
220 296
297void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 298ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 299{
223 syserr_cb = cb; 300 syserr_cb = cb;
224} 301}
225 302
226static void 303static void noinline
227syserr (const char *msg) 304syserr (const char *msg)
228{ 305{
229 if (!msg) 306 if (!msg)
230 msg = "(libev) system error"; 307 msg = "(libev) system error";
231 308
238 } 315 }
239} 316}
240 317
241static void *(*alloc)(void *ptr, long size); 318static void *(*alloc)(void *ptr, long size);
242 319
320void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 321ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 322{
245 alloc = cb; 323 alloc = cb;
246} 324}
247 325
248static void * 326inline_speed void *
249ev_realloc (void *ptr, long size) 327ev_realloc (void *ptr, long size)
250{ 328{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 329 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252 330
253 if (!ptr && size) 331 if (!ptr && size)
277typedef struct 355typedef struct
278{ 356{
279 W w; 357 W w;
280 int events; 358 int events;
281} ANPENDING; 359} ANPENDING;
360
361#if EV_USE_INOTIFY
362typedef struct
363{
364 WL head;
365} ANFS;
366#endif
282 367
283#if EV_MULTIPLICITY 368#if EV_MULTIPLICITY
284 369
285 struct ev_loop 370 struct ev_loop
286 { 371 {
320 gettimeofday (&tv, 0); 405 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 406 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 407#endif
323} 408}
324 409
325inline ev_tstamp 410ev_tstamp inline_size
326get_clock (void) 411get_clock (void)
327{ 412{
328#if EV_USE_MONOTONIC 413#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 414 if (expect_true (have_monotonic))
330 { 415 {
343{ 428{
344 return ev_rt_now; 429 return ev_rt_now;
345} 430}
346#endif 431#endif
347 432
348#define array_roundsize(type,n) (((n) | 4) & ~3) 433void
434ev_sleep (ev_tstamp delay)
435{
436 if (delay > 0.)
437 {
438#if EV_USE_NANOSLEEP
439 struct timespec ts;
440
441 ts.tv_sec = (time_t)delay;
442 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443
444 nanosleep (&ts, 0);
445#elif defined(_WIN32)
446 Sleep (delay * 1e3);
447#else
448 struct timeval tv;
449
450 tv.tv_sec = (time_t)delay;
451 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452
453 select (0, 0, 0, 0, &tv);
454#endif
455 }
456}
457
458/*****************************************************************************/
459
460int inline_size
461array_nextsize (int elem, int cur, int cnt)
462{
463 int ncur = cur + 1;
464
465 do
466 ncur <<= 1;
467 while (cnt > ncur);
468
469 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
470 if (elem * ncur > 4096)
471 {
472 ncur *= elem;
473 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
474 ncur = ncur - sizeof (void *) * 4;
475 ncur /= elem;
476 }
477
478 return ncur;
479}
480
481static noinline void *
482array_realloc (int elem, void *base, int *cur, int cnt)
483{
484 *cur = array_nextsize (elem, *cur, cnt);
485 return ev_realloc (base, elem * *cur);
486}
349 487
350#define array_needsize(type,base,cur,cnt,init) \ 488#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 489 if (expect_false ((cnt) > (cur))) \
352 { \ 490 { \
353 int newcnt = cur; \ 491 int ocur_ = (cur); \
354 do \ 492 (base) = (type *)array_realloc \
355 { \ 493 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 494 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 } 495 }
364 496
497#if 0
365#define array_slim(type,stem) \ 498#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 499 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 500 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 501 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 502 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 503 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 504 }
505#endif
372 506
373#define array_free(stem, idx) \ 507#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 508 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 509
376/*****************************************************************************/ 510/*****************************************************************************/
377 511
378static void 512void noinline
513ev_feed_event (EV_P_ void *w, int revents)
514{
515 W w_ = (W)w;
516 int pri = ABSPRI (w_);
517
518 if (expect_false (w_->pending))
519 pendings [pri][w_->pending - 1].events |= revents;
520 else
521 {
522 w_->pending = ++pendingcnt [pri];
523 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
524 pendings [pri][w_->pending - 1].w = w_;
525 pendings [pri][w_->pending - 1].events = revents;
526 }
527}
528
529void inline_speed
530queue_events (EV_P_ W *events, int eventcnt, int type)
531{
532 int i;
533
534 for (i = 0; i < eventcnt; ++i)
535 ev_feed_event (EV_A_ events [i], type);
536}
537
538/*****************************************************************************/
539
540void inline_size
379anfds_init (ANFD *base, int count) 541anfds_init (ANFD *base, int count)
380{ 542{
381 while (count--) 543 while (count--)
382 { 544 {
383 base->head = 0; 545 base->head = 0;
386 548
387 ++base; 549 ++base;
388 } 550 }
389} 551}
390 552
391void 553void 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) 554fd_event (EV_P_ int fd, int revents)
419{ 555{
420 ANFD *anfd = anfds + fd; 556 ANFD *anfd = anfds + fd;
421 ev_io *w; 557 ev_io *w;
422 558
430} 566}
431 567
432void 568void
433ev_feed_fd_event (EV_P_ int fd, int revents) 569ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 570{
571 if (fd >= 0 && fd < anfdmax)
435 fd_event (EV_A_ fd, revents); 572 fd_event (EV_A_ fd, revents);
436} 573}
437 574
438/*****************************************************************************/ 575void inline_size
439
440inline void
441fd_reify (EV_P) 576fd_reify (EV_P)
442{ 577{
443 int i; 578 int i;
444 579
445 for (i = 0; i < fdchangecnt; ++i) 580 for (i = 0; i < fdchangecnt; ++i)
446 { 581 {
447 int fd = fdchanges [i]; 582 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 583 ANFD *anfd = anfds + fd;
449 ev_io *w; 584 ev_io *w;
450 585
451 int events = 0; 586 unsigned char events = 0;
452 587
453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 588 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454 events |= w->events; 589 events |= (unsigned char)w->events;
455 590
456#if EV_SELECT_IS_WINSOCKET 591#if EV_SELECT_IS_WINSOCKET
457 if (events) 592 if (events)
458 { 593 {
459 unsigned long argp; 594 unsigned long argp;
460 anfd->handle = _get_osfhandle (fd); 595 anfd->handle = _get_osfhandle (fd);
461 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
462 } 597 }
463#endif 598#endif
464 599
600 {
601 unsigned char o_events = anfd->events;
602 unsigned char o_reify = anfd->reify;
603
465 anfd->reify = 0; 604 anfd->reify = 0;
466
467 backend_modify (EV_A_ fd, anfd->events, events);
468 anfd->events = events; 605 anfd->events = events;
606
607 if (o_events != events || o_reify & EV_IOFDSET)
608 backend_modify (EV_A_ fd, o_events, events);
609 }
469 } 610 }
470 611
471 fdchangecnt = 0; 612 fdchangecnt = 0;
472} 613}
473 614
474static void 615void inline_size
475fd_change (EV_P_ int fd) 616fd_change (EV_P_ int fd, int flags)
476{ 617{
477 if (expect_false (anfds [fd].reify)) 618 unsigned char reify = anfds [fd].reify;
478 return;
479
480 anfds [fd].reify = 1; 619 anfds [fd].reify |= flags;
481 620
621 if (expect_true (!reify))
622 {
482 ++fdchangecnt; 623 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 624 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 625 fdchanges [fdchangecnt - 1] = fd;
626 }
485} 627}
486 628
487static void 629void inline_speed
488fd_kill (EV_P_ int fd) 630fd_kill (EV_P_ int fd)
489{ 631{
490 ev_io *w; 632 ev_io *w;
491 633
492 while ((w = (ev_io *)anfds [fd].head)) 634 while ((w = (ev_io *)anfds [fd].head))
494 ev_io_stop (EV_A_ w); 636 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 637 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 638 }
497} 639}
498 640
499inline int 641int inline_size
500fd_valid (int fd) 642fd_valid (int fd)
501{ 643{
502#ifdef _WIN32 644#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 645 return _get_osfhandle (fd) != -1;
504#else 646#else
505 return fcntl (fd, F_GETFD) != -1; 647 return fcntl (fd, F_GETFD) != -1;
506#endif 648#endif
507} 649}
508 650
509/* called on EBADF to verify fds */ 651/* called on EBADF to verify fds */
510static void 652static void noinline
511fd_ebadf (EV_P) 653fd_ebadf (EV_P)
512{ 654{
513 int fd; 655 int fd;
514 656
515 for (fd = 0; fd < anfdmax; ++fd) 657 for (fd = 0; fd < anfdmax; ++fd)
517 if (!fd_valid (fd) == -1 && errno == EBADF) 659 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 660 fd_kill (EV_A_ fd);
519} 661}
520 662
521/* called on ENOMEM in select/poll to kill some fds and retry */ 663/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 664static void noinline
523fd_enomem (EV_P) 665fd_enomem (EV_P)
524{ 666{
525 int fd; 667 int fd;
526 668
527 for (fd = anfdmax; fd--; ) 669 for (fd = anfdmax; fd--; )
531 return; 673 return;
532 } 674 }
533} 675}
534 676
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 677/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 678static void noinline
537fd_rearm_all (EV_P) 679fd_rearm_all (EV_P)
538{ 680{
539 int fd; 681 int fd;
540 682
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 683 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 684 if (anfds [fd].events)
544 { 685 {
545 anfds [fd].events = 0; 686 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 687 fd_change (EV_A_ fd, EV_IOFDSET | 1);
547 } 688 }
548} 689}
549 690
550/*****************************************************************************/ 691/*****************************************************************************/
551 692
552static void 693void inline_speed
553upheap (WT *heap, int k) 694upheap (WT *heap, int k)
554{ 695{
555 WT w = heap [k]; 696 WT w = heap [k];
556 697
557 while (k && heap [k >> 1]->at > w->at) 698 while (k)
558 { 699 {
700 int p = (k - 1) >> 1;
701
702 if (heap [p]->at <= w->at)
703 break;
704
559 heap [k] = heap [k >> 1]; 705 heap [k] = heap [p];
560 ((W)heap [k])->active = k + 1; 706 ((W)heap [k])->active = k + 1;
561 k >>= 1; 707 k = p;
562 } 708 }
563 709
564 heap [k] = w; 710 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 711 ((W)heap [k])->active = k + 1;
566
567} 712}
568 713
569static void 714void inline_speed
570downheap (WT *heap, int N, int k) 715downheap (WT *heap, int N, int k)
571{ 716{
572 WT w = heap [k]; 717 WT w = heap [k];
573 718
574 while (k < (N >> 1)) 719 for (;;)
575 { 720 {
576 int j = k << 1; 721 int c = (k << 1) + 1;
577 722
578 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 723 if (c >= N)
579 ++j;
580
581 if (w->at <= heap [j]->at)
582 break; 724 break;
583 725
726 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
727 ? 1 : 0;
728
729 if (w->at <= heap [c]->at)
730 break;
731
584 heap [k] = heap [j]; 732 heap [k] = heap [c];
585 ((W)heap [k])->active = k + 1; 733 ((W)heap [k])->active = k + 1;
734
586 k = j; 735 k = c;
587 } 736 }
588 737
589 heap [k] = w; 738 heap [k] = w;
590 ((W)heap [k])->active = k + 1; 739 ((W)heap [k])->active = k + 1;
591} 740}
592 741
593inline void 742void inline_size
594adjustheap (WT *heap, int N, int k) 743adjustheap (WT *heap, int N, int k)
595{ 744{
596 upheap (heap, k); 745 upheap (heap, k);
597 downheap (heap, N, k); 746 downheap (heap, N, k);
598} 747}
610 759
611static int sigpipe [2]; 760static int sigpipe [2];
612static sig_atomic_t volatile gotsig; 761static sig_atomic_t volatile gotsig;
613static ev_io sigev; 762static ev_io sigev;
614 763
615static void 764void inline_size
616signals_init (ANSIG *base, int count) 765signals_init (ANSIG *base, int count)
617{ 766{
618 while (count--) 767 while (count--)
619 { 768 {
620 base->head = 0; 769 base->head = 0;
640 write (sigpipe [1], &signum, 1); 789 write (sigpipe [1], &signum, 1);
641 errno = old_errno; 790 errno = old_errno;
642 } 791 }
643} 792}
644 793
645void 794void noinline
646ev_feed_signal_event (EV_P_ int signum) 795ev_feed_signal_event (EV_P_ int signum)
647{ 796{
648 WL w; 797 WL w;
649 798
650#if EV_MULTIPLICITY 799#if EV_MULTIPLICITY
673 for (signum = signalmax; signum--; ) 822 for (signum = signalmax; signum--; )
674 if (signals [signum].gotsig) 823 if (signals [signum].gotsig)
675 ev_feed_signal_event (EV_A_ signum + 1); 824 ev_feed_signal_event (EV_A_ signum + 1);
676} 825}
677 826
678static void 827void inline_speed
679fd_intern (int fd) 828fd_intern (int fd)
680{ 829{
681#ifdef _WIN32 830#ifdef _WIN32
682 int arg = 1; 831 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 834 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 835 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 836#endif
688} 837}
689 838
690static void 839static void noinline
691siginit (EV_P) 840siginit (EV_P)
692{ 841{
693 fd_intern (sigpipe [0]); 842 fd_intern (sigpipe [0]);
694 fd_intern (sigpipe [1]); 843 fd_intern (sigpipe [1]);
695 844
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 847 ev_unref (EV_A); /* child watcher should not keep loop alive */
699} 848}
700 849
701/*****************************************************************************/ 850/*****************************************************************************/
702 851
703static ev_child *childs [PID_HASHSIZE]; 852static WL childs [EV_PID_HASHSIZE];
704 853
705#ifndef _WIN32 854#ifndef _WIN32
706 855
707static ev_signal childev; 856static ev_signal childev;
857
858void inline_speed
859child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
860{
861 ev_child *w;
862
863 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
864 if (w->pid == pid || !w->pid)
865 {
866 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
867 w->rpid = pid;
868 w->rstatus = status;
869 ev_feed_event (EV_A_ (W)w, EV_CHILD);
870 }
871}
708 872
709#ifndef WCONTINUED 873#ifndef WCONTINUED
710# define WCONTINUED 0 874# define WCONTINUED 0
711#endif 875#endif
712 876
713static void 877static 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) 878childcb (EV_P_ ev_signal *sw, int revents)
730{ 879{
731 int pid, status; 880 int pid, status;
732 881
882 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 883 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 884 if (!WCONTINUED
885 || errno != EINVAL
886 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887 return;
888
735 /* make sure we are called again until all childs have been reaped */ 889 /* 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 */ 890 /* 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); 891 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 892
739 child_reap (EV_A_ sw, pid, pid, status); 893 child_reap (EV_A_ sw, pid, pid, status);
894 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 */ 895 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741 }
742} 896}
743 897
744#endif 898#endif
745 899
746/*****************************************************************************/ 900/*****************************************************************************/
772{ 926{
773 return EV_VERSION_MINOR; 927 return EV_VERSION_MINOR;
774} 928}
775 929
776/* return true if we are running with elevated privileges and should ignore env variables */ 930/* return true if we are running with elevated privileges and should ignore env variables */
777static int 931int inline_size
778enable_secure (void) 932enable_secure (void)
779{ 933{
780#ifdef _WIN32 934#ifdef _WIN32
781 return 0; 935 return 0;
782#else 936#else
818} 972}
819 973
820unsigned int 974unsigned int
821ev_embeddable_backends (void) 975ev_embeddable_backends (void)
822{ 976{
977 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
823 return EVBACKEND_EPOLL 978 return EVBACKEND_KQUEUE
824 | EVBACKEND_KQUEUE
825 | EVBACKEND_PORT; 979 | EVBACKEND_PORT;
826} 980}
827 981
828unsigned int 982unsigned int
829ev_backend (EV_P) 983ev_backend (EV_P)
830{ 984{
831 return backend; 985 return backend;
832} 986}
833 987
834static void 988unsigned int
989ev_loop_count (EV_P)
990{
991 return loop_count;
992}
993
994void
995ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
996{
997 io_blocktime = interval;
998}
999
1000void
1001ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 timeout_blocktime = interval;
1004}
1005
1006static void noinline
835loop_init (EV_P_ unsigned int flags) 1007loop_init (EV_P_ unsigned int flags)
836{ 1008{
837 if (!backend) 1009 if (!backend)
838 { 1010 {
839#if EV_USE_MONOTONIC 1011#if EV_USE_MONOTONIC
847 ev_rt_now = ev_time (); 1019 ev_rt_now = ev_time ();
848 mn_now = get_clock (); 1020 mn_now = get_clock ();
849 now_floor = mn_now; 1021 now_floor = mn_now;
850 rtmn_diff = ev_rt_now - mn_now; 1022 rtmn_diff = ev_rt_now - mn_now;
851 1023
1024 io_blocktime = 0.;
1025 timeout_blocktime = 0.;
1026
1027 /* pid check not overridable via env */
1028#ifndef _WIN32
1029 if (flags & EVFLAG_FORKCHECK)
1030 curpid = getpid ();
1031#endif
1032
852 if (!(flags & EVFLAG_NOENV) 1033 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure () 1034 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS")) 1035 && getenv ("LIBEV_FLAGS"))
855 flags = atoi (getenv ("LIBEV_FLAGS")); 1036 flags = atoi (getenv ("LIBEV_FLAGS"));
856 1037
857 if (!(flags & 0x0000ffffUL)) 1038 if (!(flags & 0x0000ffffUL))
858 flags |= ev_recommended_backends (); 1039 flags |= ev_recommended_backends ();
859 1040
860 backend = 0; 1041 backend = 0;
1042 backend_fd = -1;
1043#if EV_USE_INOTIFY
1044 fs_fd = -2;
1045#endif
1046
861#if EV_USE_PORT 1047#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1048 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 1049#endif
864#if EV_USE_KQUEUE 1050#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1051 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
877 ev_init (&sigev, sigcb); 1063 ev_init (&sigev, sigcb);
878 ev_set_priority (&sigev, EV_MAXPRI); 1064 ev_set_priority (&sigev, EV_MAXPRI);
879 } 1065 }
880} 1066}
881 1067
882static void 1068static void noinline
883loop_destroy (EV_P) 1069loop_destroy (EV_P)
884{ 1070{
885 int i; 1071 int i;
1072
1073#if EV_USE_INOTIFY
1074 if (fs_fd >= 0)
1075 close (fs_fd);
1076#endif
1077
1078 if (backend_fd >= 0)
1079 close (backend_fd);
886 1080
887#if EV_USE_PORT 1081#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1082 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 1083#endif
890#if EV_USE_KQUEUE 1084#if EV_USE_KQUEUE
899#if EV_USE_SELECT 1093#if EV_USE_SELECT
900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1094 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901#endif 1095#endif
902 1096
903 for (i = NUMPRI; i--; ) 1097 for (i = NUMPRI; i--; )
1098 {
904 array_free (pending, [i]); 1099 array_free (pending, [i]);
1100#if EV_IDLE_ENABLE
1101 array_free (idle, [i]);
1102#endif
1103 }
1104
1105 ev_free (anfds); anfdmax = 0;
905 1106
906 /* have to use the microsoft-never-gets-it-right macro */ 1107 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 1108 array_free (fdchange, EMPTY);
908 array_free (timer, EMPTY0); 1109 array_free (timer, EMPTY);
909#if EV_PERIODICS 1110#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 1111 array_free (periodic, EMPTY);
911#endif 1112#endif
1113#if EV_FORK_ENABLE
912 array_free (idle, EMPTY0); 1114 array_free (fork, EMPTY);
1115#endif
913 array_free (prepare, EMPTY0); 1116 array_free (prepare, EMPTY);
914 array_free (check, EMPTY0); 1117 array_free (check, EMPTY);
915 1118
916 backend = 0; 1119 backend = 0;
917} 1120}
918 1121
919static void 1122void inline_size infy_fork (EV_P);
1123
1124void inline_size
920loop_fork (EV_P) 1125loop_fork (EV_P)
921{ 1126{
922#if EV_USE_PORT 1127#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1128 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 1129#endif
925#if EV_USE_KQUEUE 1130#if EV_USE_KQUEUE
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1131 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 1132#endif
928#if EV_USE_EPOLL 1133#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1134 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1135#endif
1136#if EV_USE_INOTIFY
1137 infy_fork (EV_A);
930#endif 1138#endif
931 1139
932 if (ev_is_active (&sigev)) 1140 if (ev_is_active (&sigev))
933 { 1141 {
934 /* default loop */ 1142 /* default loop */
1050 postfork = 1; 1258 postfork = 1;
1051} 1259}
1052 1260
1053/*****************************************************************************/ 1261/*****************************************************************************/
1054 1262
1055static int 1263void
1056any_pending (EV_P) 1264ev_invoke (EV_P_ void *w, int revents)
1057{ 1265{
1058 int pri; 1266 EV_CB_INVOKE ((W)w, revents);
1059
1060 for (pri = NUMPRI; pri--; )
1061 if (pendingcnt [pri])
1062 return 1;
1063
1064 return 0;
1065} 1267}
1066 1268
1067inline void 1269void inline_speed
1068call_pending (EV_P) 1270call_pending (EV_P)
1069{ 1271{
1070 int pri; 1272 int pri;
1071 1273
1072 for (pri = NUMPRI; pri--; ) 1274 for (pri = NUMPRI; pri--; )
1074 { 1276 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1277 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1278
1077 if (expect_true (p->w)) 1279 if (expect_true (p->w))
1078 { 1280 {
1281 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1282
1079 p->w->pending = 0; 1283 p->w->pending = 0;
1080 EV_CB_INVOKE (p->w, p->events); 1284 EV_CB_INVOKE (p->w, p->events);
1081 } 1285 }
1082 } 1286 }
1083} 1287}
1084 1288
1085inline void 1289void inline_size
1086timers_reify (EV_P) 1290timers_reify (EV_P)
1087{ 1291{
1088 while (timercnt && ((WT)timers [0])->at <= mn_now) 1292 while (timercnt && ((WT)timers [0])->at <= mn_now)
1089 { 1293 {
1090 ev_timer *w = timers [0]; 1294 ev_timer *w = (ev_timer *)timers [0];
1091 1295
1092 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1296 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1093 1297
1094 /* first reschedule or stop timer */ 1298 /* first reschedule or stop timer */
1095 if (w->repeat) 1299 if (w->repeat)
1096 { 1300 {
1097 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1301 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1098 1302
1099 ((WT)w)->at += w->repeat; 1303 ((WT)w)->at += w->repeat;
1100 if (((WT)w)->at < mn_now) 1304 if (((WT)w)->at < mn_now)
1101 ((WT)w)->at = mn_now; 1305 ((WT)w)->at = mn_now;
1102 1306
1103 downheap ((WT *)timers, timercnt, 0); 1307 downheap (timers, timercnt, 0);
1104 } 1308 }
1105 else 1309 else
1106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1310 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1107 1311
1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1312 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1109 } 1313 }
1110} 1314}
1111 1315
1112#if EV_PERIODICS 1316#if EV_PERIODIC_ENABLE
1113inline void 1317void inline_size
1114periodics_reify (EV_P) 1318periodics_reify (EV_P)
1115{ 1319{
1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1320 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1117 { 1321 {
1118 ev_periodic *w = periodics [0]; 1322 ev_periodic *w = (ev_periodic *)periodics [0];
1119 1323
1120 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1324 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1121 1325
1122 /* first reschedule or stop timer */ 1326 /* first reschedule or stop timer */
1123 if (w->reschedule_cb) 1327 if (w->reschedule_cb)
1124 { 1328 {
1125 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1329 ((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)); 1330 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1127 downheap ((WT *)periodics, periodiccnt, 0); 1331 downheap (periodics, periodiccnt, 0);
1128 } 1332 }
1129 else if (w->interval) 1333 else if (w->interval)
1130 { 1334 {
1131 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1335 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1336 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)); 1337 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); 1338 downheap (periodics, periodiccnt, 0);
1134 } 1339 }
1135 else 1340 else
1136 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1341 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1137 1342
1138 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1343 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1139 } 1344 }
1140} 1345}
1141 1346
1142static void 1347static void noinline
1143periodics_reschedule (EV_P) 1348periodics_reschedule (EV_P)
1144{ 1349{
1145 int i; 1350 int i;
1146 1351
1147 /* adjust periodics after time jump */ 1352 /* adjust periodics after time jump */
1148 for (i = 0; i < periodiccnt; ++i) 1353 for (i = 0; i < periodiccnt; ++i)
1149 { 1354 {
1150 ev_periodic *w = periodics [i]; 1355 ev_periodic *w = (ev_periodic *)periodics [i];
1151 1356
1152 if (w->reschedule_cb) 1357 if (w->reschedule_cb)
1153 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1358 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1154 else if (w->interval) 1359 else if (w->interval)
1155 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1360 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1156 } 1361 }
1157 1362
1158 /* now rebuild the heap */ 1363 /* now rebuild the heap */
1159 for (i = periodiccnt >> 1; i--; ) 1364 for (i = periodiccnt >> 1; i--; )
1160 downheap ((WT *)periodics, periodiccnt, i); 1365 downheap (periodics, periodiccnt, i);
1161} 1366}
1162#endif 1367#endif
1163 1368
1164inline int 1369#if EV_IDLE_ENABLE
1165time_update_monotonic (EV_P) 1370void inline_size
1371idle_reify (EV_P)
1166{ 1372{
1373 if (expect_false (idleall))
1374 {
1375 int pri;
1376
1377 for (pri = NUMPRI; pri--; )
1378 {
1379 if (pendingcnt [pri])
1380 break;
1381
1382 if (idlecnt [pri])
1383 {
1384 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1385 break;
1386 }
1387 }
1388 }
1389}
1390#endif
1391
1392void inline_speed
1393time_update (EV_P_ ev_tstamp max_block)
1394{
1395 int i;
1396
1397#if EV_USE_MONOTONIC
1398 if (expect_true (have_monotonic))
1399 {
1400 ev_tstamp odiff = rtmn_diff;
1401
1167 mn_now = get_clock (); 1402 mn_now = get_clock ();
1168 1403
1404 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1405 /* interpolate in the meantime */
1169 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1406 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1170 { 1407 {
1171 ev_rt_now = rtmn_diff + mn_now; 1408 ev_rt_now = rtmn_diff + mn_now;
1172 return 0; 1409 return;
1173 } 1410 }
1174 else 1411
1175 {
1176 now_floor = mn_now; 1412 now_floor = mn_now;
1177 ev_rt_now = ev_time (); 1413 ev_rt_now = ev_time ();
1178 return 1;
1179 }
1180}
1181 1414
1182inline void 1415 /* loop a few times, before making important decisions.
1183time_update (EV_P) 1416 * on the choice of "4": one iteration isn't enough,
1184{ 1417 * in case we get preempted during the calls to
1185 int i; 1418 * ev_time and get_clock. a second call is almost guaranteed
1186 1419 * to succeed in that case, though. and looping a few more times
1187#if EV_USE_MONOTONIC 1420 * doesn't hurt either as we only do this on time-jumps or
1188 if (expect_true (have_monotonic)) 1421 * in the unlikely event of having been preempted here.
1189 { 1422 */
1190 if (time_update_monotonic (EV_A)) 1423 for (i = 4; --i; )
1191 { 1424 {
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; 1425 rtmn_diff = ev_rt_now - mn_now;
1197 1426
1198 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1427 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1199 return; /* all is well */ 1428 return; /* all is well */
1200 1429
1201 ev_rt_now = ev_time (); 1430 ev_rt_now = ev_time ();
1202 mn_now = get_clock (); 1431 mn_now = get_clock ();
1203 now_floor = mn_now; 1432 now_floor = mn_now;
1204 } 1433 }
1205 1434
1206# if EV_PERIODICS 1435# if EV_PERIODIC_ENABLE
1436 periodics_reschedule (EV_A);
1437# endif
1438 /* no timer adjustment, as the monotonic clock doesn't jump */
1439 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1440 }
1441 else
1442#endif
1443 {
1444 ev_rt_now = ev_time ();
1445
1446 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1447 {
1448#if EV_PERIODIC_ENABLE
1207 periodics_reschedule (EV_A); 1449 periodics_reschedule (EV_A);
1208# endif 1450#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 */ 1451 /* adjust timers. this is easy, as the offset is the same for all of them */
1225 for (i = 0; i < timercnt; ++i) 1452 for (i = 0; i < timercnt; ++i)
1226 ((WT)timers [i])->at += ev_rt_now - mn_now; 1453 ((WT)timers [i])->at += ev_rt_now - mn_now;
1227 } 1454 }
1228 1455
1229 mn_now = ev_rt_now; 1456 mn_now = ev_rt_now;
1249{ 1476{
1250 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1477 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1251 ? EVUNLOOP_ONE 1478 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL; 1479 : EVUNLOOP_CANCEL;
1253 1480
1254 while (activecnt) 1481 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1482
1483 do
1255 { 1484 {
1485#ifndef _WIN32
1486 if (expect_false (curpid)) /* penalise the forking check even more */
1487 if (expect_false (getpid () != curpid))
1488 {
1489 curpid = getpid ();
1490 postfork = 1;
1491 }
1492#endif
1493
1494#if EV_FORK_ENABLE
1495 /* we might have forked, so queue fork handlers */
1496 if (expect_false (postfork))
1497 if (forkcnt)
1498 {
1499 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1500 call_pending (EV_A);
1501 }
1502#endif
1503
1256 /* queue check watchers (and execute them) */ 1504 /* queue prepare watchers (and execute them) */
1257 if (expect_false (preparecnt)) 1505 if (expect_false (preparecnt))
1258 { 1506 {
1259 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1507 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1260 call_pending (EV_A); 1508 call_pending (EV_A);
1261 } 1509 }
1262 1510
1511 if (expect_false (!activecnt))
1512 break;
1513
1263 /* we might have forked, so reify kernel state if necessary */ 1514 /* we might have forked, so reify kernel state if necessary */
1264 if (expect_false (postfork)) 1515 if (expect_false (postfork))
1265 loop_fork (EV_A); 1516 loop_fork (EV_A);
1266 1517
1267 /* update fd-related kernel structures */ 1518 /* update fd-related kernel structures */
1268 fd_reify (EV_A); 1519 fd_reify (EV_A);
1269 1520
1270 /* calculate blocking time */ 1521 /* calculate blocking time */
1271 { 1522 {
1272 double block; 1523 ev_tstamp waittime = 0.;
1524 ev_tstamp sleeptime = 0.;
1273 1525
1274 if (flags & EVLOOP_NONBLOCK || idlecnt) 1526 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1275 block = 0.; /* do not block at all */
1276 else
1277 { 1527 {
1278 /* update time to cancel out callback processing overhead */ 1528 /* 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); 1529 time_update (EV_A_ 1e100);
1282 else
1283#endif
1284 {
1285 ev_rt_now = ev_time ();
1286 mn_now = ev_rt_now;
1287 }
1288 1530
1289 block = MAX_BLOCKTIME; 1531 waittime = MAX_BLOCKTIME;
1290 1532
1291 if (timercnt) 1533 if (timercnt)
1292 { 1534 {
1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1535 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1294 if (block > to) block = to; 1536 if (waittime > to) waittime = to;
1295 } 1537 }
1296 1538
1297#if EV_PERIODICS 1539#if EV_PERIODIC_ENABLE
1298 if (periodiccnt) 1540 if (periodiccnt)
1299 { 1541 {
1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1542 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1301 if (block > to) block = to; 1543 if (waittime > to) waittime = to;
1302 } 1544 }
1303#endif 1545#endif
1304 1546
1305 if (expect_false (block < 0.)) block = 0.; 1547 if (expect_false (waittime < timeout_blocktime))
1548 waittime = timeout_blocktime;
1549
1550 sleeptime = waittime - backend_fudge;
1551
1552 if (expect_true (sleeptime > io_blocktime))
1553 sleeptime = io_blocktime;
1554
1555 if (sleeptime)
1556 {
1557 ev_sleep (sleeptime);
1558 waittime -= sleeptime;
1559 }
1306 } 1560 }
1307 1561
1562 ++loop_count;
1308 backend_poll (EV_A_ block); 1563 backend_poll (EV_A_ waittime);
1564
1565 /* update ev_rt_now, do magic */
1566 time_update (EV_A_ waittime + sleeptime);
1309 } 1567 }
1310
1311 /* update ev_rt_now, do magic */
1312 time_update (EV_A);
1313 1568
1314 /* queue pending timers and reschedule them */ 1569 /* queue pending timers and reschedule them */
1315 timers_reify (EV_A); /* relative timers called last */ 1570 timers_reify (EV_A); /* relative timers called last */
1316#if EV_PERIODICS 1571#if EV_PERIODIC_ENABLE
1317 periodics_reify (EV_A); /* absolute timers called first */ 1572 periodics_reify (EV_A); /* absolute timers called first */
1318#endif 1573#endif
1319 1574
1575#if EV_IDLE_ENABLE
1320 /* queue idle watchers unless other events are pending */ 1576 /* queue idle watchers unless other events are pending */
1321 if (idlecnt && !any_pending (EV_A)) 1577 idle_reify (EV_A);
1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1578#endif
1323 1579
1324 /* queue check watchers, to be executed first */ 1580 /* queue check watchers, to be executed first */
1325 if (expect_false (checkcnt)) 1581 if (expect_false (checkcnt))
1326 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1582 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327 1583
1328 call_pending (EV_A); 1584 call_pending (EV_A);
1329 1585
1330 if (expect_false (loop_done))
1331 break;
1332 } 1586 }
1587 while (expect_true (activecnt && !loop_done));
1333 1588
1334 if (loop_done == EVUNLOOP_ONE) 1589 if (loop_done == EVUNLOOP_ONE)
1335 loop_done = EVUNLOOP_CANCEL; 1590 loop_done = EVUNLOOP_CANCEL;
1336} 1591}
1337 1592
1341 loop_done = how; 1596 loop_done = how;
1342} 1597}
1343 1598
1344/*****************************************************************************/ 1599/*****************************************************************************/
1345 1600
1346inline void 1601void inline_size
1347wlist_add (WL *head, WL elem) 1602wlist_add (WL *head, WL elem)
1348{ 1603{
1349 elem->next = *head; 1604 elem->next = *head;
1350 *head = elem; 1605 *head = elem;
1351} 1606}
1352 1607
1353inline void 1608void inline_size
1354wlist_del (WL *head, WL elem) 1609wlist_del (WL *head, WL elem)
1355{ 1610{
1356 while (*head) 1611 while (*head)
1357 { 1612 {
1358 if (*head == elem) 1613 if (*head == elem)
1363 1618
1364 head = &(*head)->next; 1619 head = &(*head)->next;
1365 } 1620 }
1366} 1621}
1367 1622
1368inline void 1623void inline_speed
1369ev_clear_pending (EV_P_ W w) 1624clear_pending (EV_P_ W w)
1370{ 1625{
1371 if (w->pending) 1626 if (w->pending)
1372 { 1627 {
1373 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1628 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374 w->pending = 0; 1629 w->pending = 0;
1375 } 1630 }
1376} 1631}
1377 1632
1378inline void 1633int
1634ev_clear_pending (EV_P_ void *w)
1635{
1636 W w_ = (W)w;
1637 int pending = w_->pending;
1638
1639 if (expect_true (pending))
1640 {
1641 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1642 w_->pending = 0;
1643 p->w = 0;
1644 return p->events;
1645 }
1646 else
1647 return 0;
1648}
1649
1650void inline_size
1651pri_adjust (EV_P_ W w)
1652{
1653 int pri = w->priority;
1654 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1655 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1656 w->priority = pri;
1657}
1658
1659void inline_speed
1379ev_start (EV_P_ W w, int active) 1660ev_start (EV_P_ W w, int active)
1380{ 1661{
1381 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1662 pri_adjust (EV_A_ w);
1382 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384 w->active = active; 1663 w->active = active;
1385 ev_ref (EV_A); 1664 ev_ref (EV_A);
1386} 1665}
1387 1666
1388inline void 1667void inline_size
1389ev_stop (EV_P_ W w) 1668ev_stop (EV_P_ W w)
1390{ 1669{
1391 ev_unref (EV_A); 1670 ev_unref (EV_A);
1392 w->active = 0; 1671 w->active = 0;
1393} 1672}
1394 1673
1395/*****************************************************************************/ 1674/*****************************************************************************/
1396 1675
1397void 1676void noinline
1398ev_io_start (EV_P_ ev_io *w) 1677ev_io_start (EV_P_ ev_io *w)
1399{ 1678{
1400 int fd = w->fd; 1679 int fd = w->fd;
1401 1680
1402 if (expect_false (ev_is_active (w))) 1681 if (expect_false (ev_is_active (w)))
1404 1683
1405 assert (("ev_io_start called with negative fd", fd >= 0)); 1684 assert (("ev_io_start called with negative fd", fd >= 0));
1406 1685
1407 ev_start (EV_A_ (W)w, 1); 1686 ev_start (EV_A_ (W)w, 1);
1408 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1687 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1688 wlist_add (&anfds[fd].head, (WL)w);
1410 1689
1411 fd_change (EV_A_ fd); 1690 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1691 w->events &= ~EV_IOFDSET;
1412} 1692}
1413 1693
1414void 1694void noinline
1415ev_io_stop (EV_P_ ev_io *w) 1695ev_io_stop (EV_P_ ev_io *w)
1416{ 1696{
1417 ev_clear_pending (EV_A_ (W)w); 1697 clear_pending (EV_A_ (W)w);
1418 if (expect_false (!ev_is_active (w))) 1698 if (expect_false (!ev_is_active (w)))
1419 return; 1699 return;
1420 1700
1421 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1701 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422 1702
1423 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1703 wlist_del (&anfds[w->fd].head, (WL)w);
1424 ev_stop (EV_A_ (W)w); 1704 ev_stop (EV_A_ (W)w);
1425 1705
1426 fd_change (EV_A_ w->fd); 1706 fd_change (EV_A_ w->fd, 1);
1427} 1707}
1428 1708
1429void 1709void noinline
1430ev_timer_start (EV_P_ ev_timer *w) 1710ev_timer_start (EV_P_ ev_timer *w)
1431{ 1711{
1432 if (expect_false (ev_is_active (w))) 1712 if (expect_false (ev_is_active (w)))
1433 return; 1713 return;
1434 1714
1435 ((WT)w)->at += mn_now; 1715 ((WT)w)->at += mn_now;
1436 1716
1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1717 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438 1718
1439 ev_start (EV_A_ (W)w, ++timercnt); 1719 ev_start (EV_A_ (W)w, ++timercnt);
1440 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1720 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1441 timers [timercnt - 1] = w; 1721 timers [timercnt - 1] = (WT)w;
1442 upheap ((WT *)timers, timercnt - 1); 1722 upheap (timers, timercnt - 1);
1443 1723
1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1724 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1445} 1725}
1446 1726
1447void 1727void noinline
1448ev_timer_stop (EV_P_ ev_timer *w) 1728ev_timer_stop (EV_P_ ev_timer *w)
1449{ 1729{
1450 ev_clear_pending (EV_A_ (W)w); 1730 clear_pending (EV_A_ (W)w);
1451 if (expect_false (!ev_is_active (w))) 1731 if (expect_false (!ev_is_active (w)))
1452 return; 1732 return;
1453 1733
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1734 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1455 1735
1736 {
1737 int active = ((W)w)->active;
1738
1456 if (expect_true (((W)w)->active < timercnt--)) 1739 if (expect_true (--active < --timercnt))
1457 { 1740 {
1458 timers [((W)w)->active - 1] = timers [timercnt]; 1741 timers [active] = timers [timercnt];
1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1742 adjustheap (timers, timercnt, active);
1460 } 1743 }
1744 }
1461 1745
1462 ((WT)w)->at -= mn_now; 1746 ((WT)w)->at -= mn_now;
1463 1747
1464 ev_stop (EV_A_ (W)w); 1748 ev_stop (EV_A_ (W)w);
1465} 1749}
1466 1750
1467void 1751void noinline
1468ev_timer_again (EV_P_ ev_timer *w) 1752ev_timer_again (EV_P_ ev_timer *w)
1469{ 1753{
1470 if (ev_is_active (w)) 1754 if (ev_is_active (w))
1471 { 1755 {
1472 if (w->repeat) 1756 if (w->repeat)
1473 { 1757 {
1474 ((WT)w)->at = mn_now + w->repeat; 1758 ((WT)w)->at = mn_now + w->repeat;
1475 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1759 adjustheap (timers, timercnt, ((W)w)->active - 1);
1476 } 1760 }
1477 else 1761 else
1478 ev_timer_stop (EV_A_ w); 1762 ev_timer_stop (EV_A_ w);
1479 } 1763 }
1480 else if (w->repeat) 1764 else if (w->repeat)
1482 w->at = w->repeat; 1766 w->at = w->repeat;
1483 ev_timer_start (EV_A_ w); 1767 ev_timer_start (EV_A_ w);
1484 } 1768 }
1485} 1769}
1486 1770
1487#if EV_PERIODICS 1771#if EV_PERIODIC_ENABLE
1488void 1772void noinline
1489ev_periodic_start (EV_P_ ev_periodic *w) 1773ev_periodic_start (EV_P_ ev_periodic *w)
1490{ 1774{
1491 if (expect_false (ev_is_active (w))) 1775 if (expect_false (ev_is_active (w)))
1492 return; 1776 return;
1493 1777
1495 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1779 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1496 else if (w->interval) 1780 else if (w->interval)
1497 { 1781 {
1498 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1782 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 */ 1783 /* 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; 1784 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501 } 1785 }
1786 else
1787 ((WT)w)->at = w->offset;
1502 1788
1503 ev_start (EV_A_ (W)w, ++periodiccnt); 1789 ev_start (EV_A_ (W)w, ++periodiccnt);
1504 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1790 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1505 periodics [periodiccnt - 1] = w; 1791 periodics [periodiccnt - 1] = (WT)w;
1506 upheap ((WT *)periodics, periodiccnt - 1); 1792 upheap (periodics, periodiccnt - 1);
1507 1793
1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1794 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509} 1795}
1510 1796
1511void 1797void noinline
1512ev_periodic_stop (EV_P_ ev_periodic *w) 1798ev_periodic_stop (EV_P_ ev_periodic *w)
1513{ 1799{
1514 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1515 if (expect_false (!ev_is_active (w))) 1801 if (expect_false (!ev_is_active (w)))
1516 return; 1802 return;
1517 1803
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1804 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1519 1805
1806 {
1807 int active = ((W)w)->active;
1808
1520 if (expect_true (((W)w)->active < periodiccnt--)) 1809 if (expect_true (--active < --periodiccnt))
1521 { 1810 {
1522 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1811 periodics [active] = periodics [periodiccnt];
1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1812 adjustheap (periodics, periodiccnt, active);
1524 } 1813 }
1814 }
1525 1815
1526 ev_stop (EV_A_ (W)w); 1816 ev_stop (EV_A_ (W)w);
1527} 1817}
1528 1818
1529void 1819void noinline
1530ev_periodic_again (EV_P_ ev_periodic *w) 1820ev_periodic_again (EV_P_ ev_periodic *w)
1531{ 1821{
1532 /* TODO: use adjustheap and recalculation */ 1822 /* TODO: use adjustheap and recalculation */
1533 ev_periodic_stop (EV_A_ w); 1823 ev_periodic_stop (EV_A_ w);
1534 ev_periodic_start (EV_A_ w); 1824 ev_periodic_start (EV_A_ w);
1535} 1825}
1536#endif 1826#endif
1537 1827
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 1828#ifndef SA_RESTART
1605# define SA_RESTART 0 1829# define SA_RESTART 0
1606#endif 1830#endif
1607 1831
1608void 1832void noinline
1609ev_signal_start (EV_P_ ev_signal *w) 1833ev_signal_start (EV_P_ ev_signal *w)
1610{ 1834{
1611#if EV_MULTIPLICITY 1835#if EV_MULTIPLICITY
1612 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1836 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613#endif 1837#endif
1614 if (expect_false (ev_is_active (w))) 1838 if (expect_false (ev_is_active (w)))
1615 return; 1839 return;
1616 1840
1617 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1841 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1618 1842
1843 {
1844#ifndef _WIN32
1845 sigset_t full, prev;
1846 sigfillset (&full);
1847 sigprocmask (SIG_SETMASK, &full, &prev);
1848#endif
1849
1850 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1851
1852#ifndef _WIN32
1853 sigprocmask (SIG_SETMASK, &prev, 0);
1854#endif
1855 }
1856
1619 ev_start (EV_A_ (W)w, 1); 1857 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); 1858 wlist_add (&signals [w->signum - 1].head, (WL)w);
1622 1859
1623 if (!((WL)w)->next) 1860 if (!((WL)w)->next)
1624 { 1861 {
1625#if _WIN32 1862#if _WIN32
1626 signal (w->signum, sighandler); 1863 signal (w->signum, sighandler);
1632 sigaction (w->signum, &sa, 0); 1869 sigaction (w->signum, &sa, 0);
1633#endif 1870#endif
1634 } 1871 }
1635} 1872}
1636 1873
1637void 1874void noinline
1638ev_signal_stop (EV_P_ ev_signal *w) 1875ev_signal_stop (EV_P_ ev_signal *w)
1639{ 1876{
1640 ev_clear_pending (EV_A_ (W)w); 1877 clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w))) 1878 if (expect_false (!ev_is_active (w)))
1642 return; 1879 return;
1643 1880
1644 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1881 wlist_del (&signals [w->signum - 1].head, (WL)w);
1645 ev_stop (EV_A_ (W)w); 1882 ev_stop (EV_A_ (W)w);
1646 1883
1647 if (!signals [w->signum - 1].head) 1884 if (!signals [w->signum - 1].head)
1648 signal (w->signum, SIG_DFL); 1885 signal (w->signum, SIG_DFL);
1649} 1886}
1656#endif 1893#endif
1657 if (expect_false (ev_is_active (w))) 1894 if (expect_false (ev_is_active (w)))
1658 return; 1895 return;
1659 1896
1660 ev_start (EV_A_ (W)w, 1); 1897 ev_start (EV_A_ (W)w, 1);
1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1898 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662} 1899}
1663 1900
1664void 1901void
1665ev_child_stop (EV_P_ ev_child *w) 1902ev_child_stop (EV_P_ ev_child *w)
1666{ 1903{
1667 ev_clear_pending (EV_A_ (W)w); 1904 clear_pending (EV_A_ (W)w);
1668 if (expect_false (!ev_is_active (w))) 1905 if (expect_false (!ev_is_active (w)))
1669 return; 1906 return;
1670 1907
1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1908 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672 ev_stop (EV_A_ (W)w); 1909 ev_stop (EV_A_ (W)w);
1673} 1910}
1674 1911
1675#if EV_MULTIPLICITY 1912#if EV_STAT_ENABLE
1676void 1913
1677ev_embed_loop (EV_P_ ev_embed *w) 1914# ifdef _WIN32
1915# undef lstat
1916# define lstat(a,b) _stati64 (a,b)
1917# endif
1918
1919#define DEF_STAT_INTERVAL 5.0074891
1920#define MIN_STAT_INTERVAL 0.1074891
1921
1922static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1923
1924#if EV_USE_INOTIFY
1925# define EV_INOTIFY_BUFSIZE 8192
1926
1927static void noinline
1928infy_add (EV_P_ ev_stat *w)
1678{ 1929{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK); 1930 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);
1931
1932 if (w->wd < 0)
1933 {
1934 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1935
1936 /* monitor some parent directory for speedup hints */
1937 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1938 {
1939 char path [4096];
1940 strcpy (path, w->path);
1941
1942 do
1943 {
1944 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1945 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1946
1947 char *pend = strrchr (path, '/');
1948
1949 if (!pend)
1950 break; /* whoops, no '/', complain to your admin */
1951
1952 *pend = 0;
1953 w->wd = inotify_add_watch (fs_fd, path, mask);
1954 }
1955 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1956 }
1957 }
1958 else
1959 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1960
1961 if (w->wd >= 0)
1962 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1963}
1964
1965static void noinline
1966infy_del (EV_P_ ev_stat *w)
1967{
1968 int slot;
1969 int wd = w->wd;
1970
1971 if (wd < 0)
1972 return;
1973
1974 w->wd = -2;
1975 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1976 wlist_del (&fs_hash [slot].head, (WL)w);
1977
1978 /* remove this watcher, if others are watching it, they will rearm */
1979 inotify_rm_watch (fs_fd, wd);
1980}
1981
1982static void noinline
1983infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1984{
1985 if (slot < 0)
1986 /* overflow, need to check for all hahs slots */
1987 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1988 infy_wd (EV_A_ slot, wd, ev);
1989 else
1990 {
1991 WL w_;
1992
1993 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1994 {
1995 ev_stat *w = (ev_stat *)w_;
1996 w_ = w_->next; /* lets us remove this watcher and all before it */
1997
1998 if (w->wd == wd || wd == -1)
1999 {
2000 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2001 {
2002 w->wd = -1;
2003 infy_add (EV_A_ w); /* re-add, no matter what */
2004 }
2005
2006 stat_timer_cb (EV_A_ &w->timer, 0);
2007 }
2008 }
2009 }
1680} 2010}
1681 2011
1682static void 2012static void
2013infy_cb (EV_P_ ev_io *w, int revents)
2014{
2015 char buf [EV_INOTIFY_BUFSIZE];
2016 struct inotify_event *ev = (struct inotify_event *)buf;
2017 int ofs;
2018 int len = read (fs_fd, buf, sizeof (buf));
2019
2020 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2021 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2022}
2023
2024void inline_size
2025infy_init (EV_P)
2026{
2027 if (fs_fd != -2)
2028 return;
2029
2030 fs_fd = inotify_init ();
2031
2032 if (fs_fd >= 0)
2033 {
2034 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2035 ev_set_priority (&fs_w, EV_MAXPRI);
2036 ev_io_start (EV_A_ &fs_w);
2037 }
2038}
2039
2040void inline_size
2041infy_fork (EV_P)
2042{
2043 int slot;
2044
2045 if (fs_fd < 0)
2046 return;
2047
2048 close (fs_fd);
2049 fs_fd = inotify_init ();
2050
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 {
2053 WL w_ = fs_hash [slot].head;
2054 fs_hash [slot].head = 0;
2055
2056 while (w_)
2057 {
2058 ev_stat *w = (ev_stat *)w_;
2059 w_ = w_->next; /* lets us add this watcher */
2060
2061 w->wd = -1;
2062
2063 if (fs_fd >= 0)
2064 infy_add (EV_A_ w); /* re-add, no matter what */
2065 else
2066 ev_timer_start (EV_A_ &w->timer);
2067 }
2068
2069 }
2070}
2071
2072#endif
2073
2074void
2075ev_stat_stat (EV_P_ ev_stat *w)
2076{
2077 if (lstat (w->path, &w->attr) < 0)
2078 w->attr.st_nlink = 0;
2079 else if (!w->attr.st_nlink)
2080 w->attr.st_nlink = 1;
2081}
2082
2083static void noinline
2084stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2085{
2086 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2087
2088 /* we copy this here each the time so that */
2089 /* prev has the old value when the callback gets invoked */
2090 w->prev = w->attr;
2091 ev_stat_stat (EV_A_ w);
2092
2093 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2094 if (
2095 w->prev.st_dev != w->attr.st_dev
2096 || w->prev.st_ino != w->attr.st_ino
2097 || w->prev.st_mode != w->attr.st_mode
2098 || w->prev.st_nlink != w->attr.st_nlink
2099 || w->prev.st_uid != w->attr.st_uid
2100 || w->prev.st_gid != w->attr.st_gid
2101 || w->prev.st_rdev != w->attr.st_rdev
2102 || w->prev.st_size != w->attr.st_size
2103 || w->prev.st_atime != w->attr.st_atime
2104 || w->prev.st_mtime != w->attr.st_mtime
2105 || w->prev.st_ctime != w->attr.st_ctime
2106 ) {
2107 #if EV_USE_INOTIFY
2108 infy_del (EV_A_ w);
2109 infy_add (EV_A_ w);
2110 ev_stat_stat (EV_A_ w); /* avoid race... */
2111 #endif
2112
2113 ev_feed_event (EV_A_ w, EV_STAT);
2114 }
2115}
2116
2117void
2118ev_stat_start (EV_P_ ev_stat *w)
2119{
2120 if (expect_false (ev_is_active (w)))
2121 return;
2122
2123 /* since we use memcmp, we need to clear any padding data etc. */
2124 memset (&w->prev, 0, sizeof (ev_statdata));
2125 memset (&w->attr, 0, sizeof (ev_statdata));
2126
2127 ev_stat_stat (EV_A_ w);
2128
2129 if (w->interval < MIN_STAT_INTERVAL)
2130 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2131
2132 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2133 ev_set_priority (&w->timer, ev_priority (w));
2134
2135#if EV_USE_INOTIFY
2136 infy_init (EV_A);
2137
2138 if (fs_fd >= 0)
2139 infy_add (EV_A_ w);
2140 else
2141#endif
2142 ev_timer_start (EV_A_ &w->timer);
2143
2144 ev_start (EV_A_ (W)w, 1);
2145}
2146
2147void
2148ev_stat_stop (EV_P_ ev_stat *w)
2149{
2150 clear_pending (EV_A_ (W)w);
2151 if (expect_false (!ev_is_active (w)))
2152 return;
2153
2154#if EV_USE_INOTIFY
2155 infy_del (EV_A_ w);
2156#endif
2157 ev_timer_stop (EV_A_ &w->timer);
2158
2159 ev_stop (EV_A_ (W)w);
2160}
2161#endif
2162
2163#if EV_IDLE_ENABLE
2164void
2165ev_idle_start (EV_P_ ev_idle *w)
2166{
2167 if (expect_false (ev_is_active (w)))
2168 return;
2169
2170 pri_adjust (EV_A_ (W)w);
2171
2172 {
2173 int active = ++idlecnt [ABSPRI (w)];
2174
2175 ++idleall;
2176 ev_start (EV_A_ (W)w, active);
2177
2178 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2179 idles [ABSPRI (w)][active - 1] = w;
2180 }
2181}
2182
2183void
2184ev_idle_stop (EV_P_ ev_idle *w)
2185{
2186 clear_pending (EV_A_ (W)w);
2187 if (expect_false (!ev_is_active (w)))
2188 return;
2189
2190 {
2191 int active = ((W)w)->active;
2192
2193 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2194 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2195
2196 ev_stop (EV_A_ (W)w);
2197 --idleall;
2198 }
2199}
2200#endif
2201
2202void
2203ev_prepare_start (EV_P_ ev_prepare *w)
2204{
2205 if (expect_false (ev_is_active (w)))
2206 return;
2207
2208 ev_start (EV_A_ (W)w, ++preparecnt);
2209 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2210 prepares [preparecnt - 1] = w;
2211}
2212
2213void
2214ev_prepare_stop (EV_P_ ev_prepare *w)
2215{
2216 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w)))
2218 return;
2219
2220 {
2221 int active = ((W)w)->active;
2222 prepares [active - 1] = prepares [--preparecnt];
2223 ((W)prepares [active - 1])->active = active;
2224 }
2225
2226 ev_stop (EV_A_ (W)w);
2227}
2228
2229void
2230ev_check_start (EV_P_ ev_check *w)
2231{
2232 if (expect_false (ev_is_active (w)))
2233 return;
2234
2235 ev_start (EV_A_ (W)w, ++checkcnt);
2236 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2237 checks [checkcnt - 1] = w;
2238}
2239
2240void
2241ev_check_stop (EV_P_ ev_check *w)
2242{
2243 clear_pending (EV_A_ (W)w);
2244 if (expect_false (!ev_is_active (w)))
2245 return;
2246
2247 {
2248 int active = ((W)w)->active;
2249 checks [active - 1] = checks [--checkcnt];
2250 ((W)checks [active - 1])->active = active;
2251 }
2252
2253 ev_stop (EV_A_ (W)w);
2254}
2255
2256#if EV_EMBED_ENABLE
2257void noinline
2258ev_embed_sweep (EV_P_ ev_embed *w)
2259{
2260 ev_loop (w->other, EVLOOP_NONBLOCK);
2261}
2262
2263static void
1683embed_cb (EV_P_ ev_io *io, int revents) 2264embed_io_cb (EV_P_ ev_io *io, int revents)
1684{ 2265{
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2266 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686 2267
1687 if (ev_cb (w)) 2268 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2269 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else 2270 else
1690 ev_embed_loop (loop, w); 2271 ev_loop (w->other, EVLOOP_NONBLOCK);
1691} 2272}
2273
2274static void
2275embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276{
2277 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278
2279 {
2280 struct ev_loop *loop = w->other;
2281
2282 while (fdchangecnt)
2283 {
2284 fd_reify (EV_A);
2285 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2286 }
2287 }
2288}
2289
2290#if 0
2291static void
2292embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2293{
2294 ev_idle_stop (EV_A_ idle);
2295}
2296#endif
1692 2297
1693void 2298void
1694ev_embed_start (EV_P_ ev_embed *w) 2299ev_embed_start (EV_P_ ev_embed *w)
1695{ 2300{
1696 if (expect_false (ev_is_active (w))) 2301 if (expect_false (ev_is_active (w)))
1697 return; 2302 return;
1698 2303
1699 { 2304 {
1700 struct ev_loop *loop = w->loop; 2305 struct ev_loop *loop = w->other;
1701 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2306 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2307 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1703 } 2308 }
1704 2309
1705 ev_set_priority (&w->io, ev_priority (w)); 2310 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io); 2311 ev_io_start (EV_A_ &w->io);
2312
2313 ev_prepare_init (&w->prepare, embed_prepare_cb);
2314 ev_set_priority (&w->prepare, EV_MINPRI);
2315 ev_prepare_start (EV_A_ &w->prepare);
2316
2317 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2318
1707 ev_start (EV_A_ (W)w, 1); 2319 ev_start (EV_A_ (W)w, 1);
1708} 2320}
1709 2321
1710void 2322void
1711ev_embed_stop (EV_P_ ev_embed *w) 2323ev_embed_stop (EV_P_ ev_embed *w)
1712{ 2324{
1713 ev_clear_pending (EV_A_ (W)w); 2325 clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w))) 2326 if (expect_false (!ev_is_active (w)))
1715 return; 2327 return;
1716 2328
1717 ev_io_stop (EV_A_ &w->io); 2329 ev_io_stop (EV_A_ &w->io);
2330 ev_prepare_stop (EV_A_ &w->prepare);
2331
2332 ev_stop (EV_A_ (W)w);
2333}
2334#endif
2335
2336#if EV_FORK_ENABLE
2337void
2338ev_fork_start (EV_P_ ev_fork *w)
2339{
2340 if (expect_false (ev_is_active (w)))
2341 return;
2342
2343 ev_start (EV_A_ (W)w, ++forkcnt);
2344 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2345 forks [forkcnt - 1] = w;
2346}
2347
2348void
2349ev_fork_stop (EV_P_ ev_fork *w)
2350{
2351 clear_pending (EV_A_ (W)w);
2352 if (expect_false (!ev_is_active (w)))
2353 return;
2354
2355 {
2356 int active = ((W)w)->active;
2357 forks [active - 1] = forks [--forkcnt];
2358 ((W)forks [active - 1])->active = active;
2359 }
2360
1718 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
1719} 2362}
1720#endif 2363#endif
1721 2364
1722/*****************************************************************************/ 2365/*****************************************************************************/
1781 ev_timer_set (&once->to, timeout, 0.); 2424 ev_timer_set (&once->to, timeout, 0.);
1782 ev_timer_start (EV_A_ &once->to); 2425 ev_timer_start (EV_A_ &once->to);
1783 } 2426 }
1784} 2427}
1785 2428
2429#if EV_MULTIPLICITY
2430 #include "ev_wrap.h"
2431#endif
2432
1786#ifdef __cplusplus 2433#ifdef __cplusplus
1787} 2434}
1788#endif 2435#endif
1789 2436

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