ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.100 by root, Sun Nov 11 04:02:54 2007 UTC vs.
Revision 1.136 by root, Sat Nov 24 07:14:26 2007 UTC

32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
43# ifndef EV_USE_REALTIME 47# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
45# endif 49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
46# endif 57# endif
47 58
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
58# endif 81# endif
59 82
83# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
62# endif 97# endif
63 98
64#endif 99#endif
65 100
66#include <math.h> 101#include <math.h>
75#include <sys/types.h> 110#include <sys/types.h>
76#include <time.h> 111#include <time.h>
77 112
78#include <signal.h> 113#include <signal.h>
79 114
80#ifndef WIN32 115#ifndef _WIN32
81# include <unistd.h> 116# include <unistd.h>
82# include <sys/time.h> 117# include <sys/time.h>
83# include <sys/wait.h> 118# include <sys/wait.h>
119#else
120# define WIN32_LEAN_AND_MEAN
121# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1
84#endif 124# endif
125#endif
126
85/**/ 127/**/
86 128
87#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1 130# define EV_USE_MONOTONIC 0
131#endif
132
133#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0
89#endif 135#endif
90 136
91#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
93#endif 139#endif
94 140
95#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 142# ifdef _WIN32
143# define EV_USE_POLL 0
144# else
145# define EV_USE_POLL 1
146# endif
97#endif 147#endif
98 148
99#ifndef EV_USE_EPOLL 149#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0 150# define EV_USE_EPOLL 0
101#endif 151#endif
102 152
103#ifndef EV_USE_KQUEUE 153#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0 154# define EV_USE_KQUEUE 0
105#endif 155#endif
106 156
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME 157#ifndef EV_USE_PORT
118# define EV_USE_REALTIME 1 158# define EV_USE_PORT 0
119#endif 159#endif
120 160
121/**/ 161/**/
122 162
123#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
128#ifndef CLOCK_REALTIME 168#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME 169# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0 170# define EV_USE_REALTIME 0
131#endif 171#endif
132 172
173#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h>
175#endif
176
133/**/ 177/**/
134 178
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
139 183
140#ifdef EV_H 184#ifdef EV_H
141# include EV_H 185# include EV_H
142#else 186#else
143# include "ev.h" 187# include "ev.h"
144#endif 188#endif
145 189
146#if __GNUC__ >= 3 190#if __GNUC__ >= 3
147# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 192# define inline static inline
149#else 193#else
150# define expect(expr,value) (expr) 194# define expect(expr,value) (expr)
151# define inline static 195# define inline static
152#endif 196#endif
153 197
155#define expect_true(expr) expect ((expr) != 0, 1) 199#define expect_true(expr) expect ((expr) != 0, 1)
156 200
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 202#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159 203
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */
206
160typedef struct ev_watcher *W; 207typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 208typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 209typedef ev_watcher_time *WT;
163 210
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165 212
166#ifdef WIN32 213#ifdef _WIN32
167# include "ev_win32.c" 214# include "ev_win32.c"
168#endif 215#endif
169 216
170/*****************************************************************************/ 217/*****************************************************************************/
171 218
220typedef struct 267typedef struct
221{ 268{
222 WL head; 269 WL head;
223 unsigned char events; 270 unsigned char events;
224 unsigned char reify; 271 unsigned char reify;
272#if EV_SELECT_IS_WINSOCKET
273 SOCKET handle;
274#endif
225} ANFD; 275} ANFD;
226 276
227typedef struct 277typedef struct
228{ 278{
229 W w; 279 W w;
240 #include "ev_vars.h" 290 #include "ev_vars.h"
241 #undef VAR 291 #undef VAR
242 }; 292 };
243 #include "ev_wrap.h" 293 #include "ev_wrap.h"
244 294
245 struct ev_loop default_loop_struct; 295 static struct ev_loop default_loop_struct;
246 static struct ev_loop *default_loop; 296 struct ev_loop *ev_default_loop_ptr;
247 297
248#else 298#else
249 299
250 ev_tstamp ev_rt_now; 300 ev_tstamp ev_rt_now;
251 #define VAR(name,decl) static decl; 301 #define VAR(name,decl) static decl;
252 #include "ev_vars.h" 302 #include "ev_vars.h"
253 #undef VAR 303 #undef VAR
254 304
255 static int default_loop; 305 static int ev_default_loop_ptr;
256 306
257#endif 307#endif
258 308
259/*****************************************************************************/ 309/*****************************************************************************/
260 310
293{ 343{
294 return ev_rt_now; 344 return ev_rt_now;
295} 345}
296#endif 346#endif
297 347
298#define array_roundsize(type,n) ((n) | 4 & ~3) 348#define array_roundsize(type,n) (((n) | 4) & ~3)
299 349
300#define array_needsize(type,base,cur,cnt,init) \ 350#define array_needsize(type,base,cur,cnt,init) \
301 if (expect_false ((cnt) > cur)) \ 351 if (expect_false ((cnt) > cur)) \
302 { \ 352 { \
303 int newcnt = cur; \ 353 int newcnt = cur; \
318 stem ## max = array_roundsize (stem ## cnt >> 1); \ 368 stem ## max = array_roundsize (stem ## cnt >> 1); \
319 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321 } 371 }
322 372
323/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
324/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
325#define array_free_microshit(stem) \
326 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
327
328#define array_free(stem, idx) \ 373#define array_free(stem, idx) \
329 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
330 375
331/*****************************************************************************/ 376/*****************************************************************************/
332 377
346void 391void
347ev_feed_event (EV_P_ void *w, int revents) 392ev_feed_event (EV_P_ void *w, int revents)
348{ 393{
349 W w_ = (W)w; 394 W w_ = (W)w;
350 395
351 if (w_->pending) 396 if (expect_false (w_->pending))
352 { 397 {
353 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
354 return; 399 return;
355 } 400 }
356 401
357 w_->pending = ++pendingcnt [ABSPRI (w_)]; 402 w_->pending = ++pendingcnt [ABSPRI (w_)];
358 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); 403 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
359 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
360 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
361} 406}
362 407
363static void 408static void
371 416
372inline void 417inline void
373fd_event (EV_P_ int fd, int revents) 418fd_event (EV_P_ int fd, int revents)
374{ 419{
375 ANFD *anfd = anfds + fd; 420 ANFD *anfd = anfds + fd;
376 struct ev_io *w; 421 ev_io *w;
377 422
378 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 423 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
379 { 424 {
380 int ev = w->events & revents; 425 int ev = w->events & revents;
381 426
382 if (ev) 427 if (ev)
383 ev_feed_event (EV_A_ (W)w, ev); 428 ev_feed_event (EV_A_ (W)w, ev);
390 fd_event (EV_A_ fd, revents); 435 fd_event (EV_A_ fd, revents);
391} 436}
392 437
393/*****************************************************************************/ 438/*****************************************************************************/
394 439
395static void 440inline void
396fd_reify (EV_P) 441fd_reify (EV_P)
397{ 442{
398 int i; 443 int i;
399 444
400 for (i = 0; i < fdchangecnt; ++i) 445 for (i = 0; i < fdchangecnt; ++i)
401 { 446 {
402 int fd = fdchanges [i]; 447 int fd = fdchanges [i];
403 ANFD *anfd = anfds + fd; 448 ANFD *anfd = anfds + fd;
404 struct ev_io *w; 449 ev_io *w;
405 450
406 int events = 0; 451 int events = 0;
407 452
408 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409 events |= w->events; 454 events |= w->events;
410 455
456#if EV_SELECT_IS_WINSOCKET
457 if (events)
458 {
459 unsigned long argp;
460 anfd->handle = _get_osfhandle (fd);
461 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
462 }
463#endif
464
411 anfd->reify = 0; 465 anfd->reify = 0;
412 466
413 method_modify (EV_A_ fd, anfd->events, events); 467 backend_modify (EV_A_ fd, anfd->events, events);
414 anfd->events = events; 468 anfd->events = events;
415 } 469 }
416 470
417 fdchangecnt = 0; 471 fdchangecnt = 0;
418} 472}
419 473
420static void 474static void
421fd_change (EV_P_ int fd) 475fd_change (EV_P_ int fd)
422{ 476{
423 if (anfds [fd].reify) 477 if (expect_false (anfds [fd].reify))
424 return; 478 return;
425 479
426 anfds [fd].reify = 1; 480 anfds [fd].reify = 1;
427 481
428 ++fdchangecnt; 482 ++fdchangecnt;
429 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
430 fdchanges [fdchangecnt - 1] = fd; 484 fdchanges [fdchangecnt - 1] = fd;
431} 485}
432 486
433static void 487static void
434fd_kill (EV_P_ int fd) 488fd_kill (EV_P_ int fd)
435{ 489{
436 struct ev_io *w; 490 ev_io *w;
437 491
438 while ((w = (struct ev_io *)anfds [fd].head)) 492 while ((w = (ev_io *)anfds [fd].head))
439 { 493 {
440 ev_io_stop (EV_A_ w); 494 ev_io_stop (EV_A_ w);
441 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
442 } 496 }
443} 497}
444 498
445static int 499inline int
446fd_valid (int fd) 500fd_valid (int fd)
447{ 501{
448#ifdef WIN32 502#ifdef _WIN32
449 return !!win32_get_osfhandle (fd); 503 return _get_osfhandle (fd) != -1;
450#else 504#else
451 return fcntl (fd, F_GETFD) != -1; 505 return fcntl (fd, F_GETFD) != -1;
452#endif 506#endif
453} 507}
454 508
476 fd_kill (EV_A_ fd); 530 fd_kill (EV_A_ fd);
477 return; 531 return;
478 } 532 }
479} 533}
480 534
481/* usually called after fork if method needs to re-arm all fds from scratch */ 535/* usually called after fork if backend needs to re-arm all fds from scratch */
482static void 536static void
483fd_rearm_all (EV_P) 537fd_rearm_all (EV_P)
484{ 538{
485 int fd; 539 int fd;
486 540
554static ANSIG *signals; 608static ANSIG *signals;
555static int signalmax; 609static int signalmax;
556 610
557static int sigpipe [2]; 611static int sigpipe [2];
558static sig_atomic_t volatile gotsig; 612static sig_atomic_t volatile gotsig;
559static struct ev_io sigev; 613static ev_io sigev;
560 614
561static void 615static void
562signals_init (ANSIG *base, int count) 616signals_init (ANSIG *base, int count)
563{ 617{
564 while (count--) 618 while (count--)
571} 625}
572 626
573static void 627static void
574sighandler (int signum) 628sighandler (int signum)
575{ 629{
576#if WIN32 630#if _WIN32
577 signal (signum, sighandler); 631 signal (signum, sighandler);
578#endif 632#endif
579 633
580 signals [signum - 1].gotsig = 1; 634 signals [signum - 1].gotsig = 1;
581 635
582 if (!gotsig) 636 if (!gotsig)
583 { 637 {
584 int old_errno = errno; 638 int old_errno = errno;
585 gotsig = 1; 639 gotsig = 1;
586#ifdef WIN32
587 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588#else
589 write (sigpipe [1], &signum, 1); 640 write (sigpipe [1], &signum, 1);
590#endif
591 errno = old_errno; 641 errno = old_errno;
592 } 642 }
593} 643}
594 644
595void 645void
596ev_feed_signal_event (EV_P_ int signum) 646ev_feed_signal_event (EV_P_ int signum)
597{ 647{
598 WL w; 648 WL w;
599 649
600#if EV_MULTIPLICITY 650#if EV_MULTIPLICITY
601 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 651 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
602#endif 652#endif
603 653
604 --signum; 654 --signum;
605 655
606 if (signum < 0 || signum >= signalmax) 656 if (signum < 0 || signum >= signalmax)
611 for (w = signals [signum].head; w; w = w->next) 661 for (w = signals [signum].head; w; w = w->next)
612 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613} 663}
614 664
615static void 665static void
616sigcb (EV_P_ struct ev_io *iow, int revents) 666sigcb (EV_P_ ev_io *iow, int revents)
617{ 667{
618 int signum; 668 int signum;
619 669
620#ifdef WIN32
621 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622#else
623 read (sigpipe [0], &revents, 1); 670 read (sigpipe [0], &revents, 1);
624#endif
625 gotsig = 0; 671 gotsig = 0;
626 672
627 for (signum = signalmax; signum--; ) 673 for (signum = signalmax; signum--; )
628 if (signals [signum].gotsig) 674 if (signals [signum].gotsig)
629 ev_feed_signal_event (EV_A_ signum + 1); 675 ev_feed_signal_event (EV_A_ signum + 1);
630} 676}
631 677
632static void 678static void
679fd_intern (int fd)
680{
681#ifdef _WIN32
682 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
684#else
685 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif
688}
689
690static void
633siginit (EV_P) 691siginit (EV_P)
634{ 692{
635#ifndef WIN32 693 fd_intern (sigpipe [0]);
636 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 694 fd_intern (sigpipe [1]);
637 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
638
639 /* rather than sort out wether we really need nb, set it */
640 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
641 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
642#endif
643 695
644 ev_io_set (&sigev, sigpipe [0], EV_READ); 696 ev_io_set (&sigev, sigpipe [0], EV_READ);
645 ev_io_start (EV_A_ &sigev); 697 ev_io_start (EV_A_ &sigev);
646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 698 ev_unref (EV_A); /* child watcher should not keep loop alive */
647} 699}
648 700
649/*****************************************************************************/ 701/*****************************************************************************/
650 702
651static struct ev_child *childs [PID_HASHSIZE]; 703static ev_child *childs [PID_HASHSIZE];
652 704
653#ifndef WIN32 705#ifndef _WIN32
654 706
655static struct ev_signal childev; 707static ev_signal childev;
656 708
657#ifndef WCONTINUED 709#ifndef WCONTINUED
658# define WCONTINUED 0 710# define WCONTINUED 0
659#endif 711#endif
660 712
661static void 713static void
662child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
663{ 715{
664 struct ev_child *w; 716 ev_child *w;
665 717
666 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
667 if (w->pid == pid || !w->pid) 719 if (w->pid == pid || !w->pid)
668 { 720 {
669 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
670 w->rpid = pid; 722 w->rpid = pid;
671 w->rstatus = status; 723 w->rstatus = status;
672 ev_feed_event (EV_A_ (W)w, EV_CHILD); 724 ev_feed_event (EV_A_ (W)w, EV_CHILD);
673 } 725 }
674} 726}
675 727
676static void 728static void
677childcb (EV_P_ struct ev_signal *sw, int revents) 729childcb (EV_P_ ev_signal *sw, int revents)
678{ 730{
679 int pid, status; 731 int pid, status;
680 732
681 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
682 { 734 {
683 /* make sure we are called again until all childs have been reaped */ 735 /* 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 */
684 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
685 738
686 child_reap (EV_A_ sw, pid, pid, status); 739 child_reap (EV_A_ sw, pid, pid, status);
687 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 740 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
688 } 741 }
689} 742}
690 743
691#endif 744#endif
692 745
693/*****************************************************************************/ 746/*****************************************************************************/
694 747
748#if EV_USE_PORT
749# include "ev_port.c"
750#endif
695#if EV_USE_KQUEUE 751#if EV_USE_KQUEUE
696# include "ev_kqueue.c" 752# include "ev_kqueue.c"
697#endif 753#endif
698#if EV_USE_EPOLL 754#if EV_USE_EPOLL
699# include "ev_epoll.c" 755# include "ev_epoll.c"
719 775
720/* return true if we are running with elevated privileges and should ignore env variables */ 776/* return true if we are running with elevated privileges and should ignore env variables */
721static int 777static int
722enable_secure (void) 778enable_secure (void)
723{ 779{
724#ifdef WIN32 780#ifdef _WIN32
725 return 0; 781 return 0;
726#else 782#else
727 return getuid () != geteuid () 783 return getuid () != geteuid ()
728 || getgid () != getegid (); 784 || getgid () != getegid ();
729#endif 785#endif
730} 786}
731 787
732int 788unsigned int
733ev_method (EV_P) 789ev_supported_backends (void)
734{ 790{
735 return method; 791 unsigned int flags = 0;
736}
737 792
738static void 793 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
739loop_init (EV_P_ int methods) 794 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
795 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
796 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
797 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
798
799 return flags;
800}
801
802unsigned int
803ev_recommended_backends (void)
740{ 804{
741 if (!method) 805 unsigned int flags = ev_supported_backends ();
806
807#ifndef __NetBSD__
808 /* kqueue is borked on everything but netbsd apparently */
809 /* it usually doesn't work correctly on anything but sockets and pipes */
810 flags &= ~EVBACKEND_KQUEUE;
811#endif
812#ifdef __APPLE__
813 // flags &= ~EVBACKEND_KQUEUE; for documentation
814 flags &= ~EVBACKEND_POLL;
815#endif
816
817 return flags;
818}
819
820unsigned int
821ev_embeddable_backends (void)
822{
823 return EVBACKEND_EPOLL
824 | EVBACKEND_KQUEUE
825 | EVBACKEND_PORT;
826}
827
828unsigned int
829ev_backend (EV_P)
830{
831 return backend;
832}
833
834static void
835loop_init (EV_P_ unsigned int flags)
836{
837 if (!backend)
742 { 838 {
743#if EV_USE_MONOTONIC 839#if EV_USE_MONOTONIC
744 { 840 {
745 struct timespec ts; 841 struct timespec ts;
746 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 842 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
751 ev_rt_now = ev_time (); 847 ev_rt_now = ev_time ();
752 mn_now = get_clock (); 848 mn_now = get_clock ();
753 now_floor = mn_now; 849 now_floor = mn_now;
754 rtmn_diff = ev_rt_now - mn_now; 850 rtmn_diff = ev_rt_now - mn_now;
755 851
756 if (methods == EVMETHOD_AUTO) 852 if (!(flags & EVFLAG_NOENV)
757 if (!enable_secure () && getenv ("LIBEV_METHODS")) 853 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS"))
758 methods = atoi (getenv ("LIBEV_METHODS")); 855 flags = atoi (getenv ("LIBEV_FLAGS"));
759 else
760 methods = EVMETHOD_ANY;
761 856
762 method = 0; 857 if (!(flags & 0x0000ffffUL))
763#if EV_USE_WIN32 858 flags |= ev_recommended_backends ();
764 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 859
860 backend = 0;
861#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
765#endif 863#endif
766#if EV_USE_KQUEUE 864#if EV_USE_KQUEUE
767 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
768#endif 866#endif
769#if EV_USE_EPOLL 867#if EV_USE_EPOLL
770 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 868 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
771#endif 869#endif
772#if EV_USE_POLL 870#if EV_USE_POLL
773 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 871 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
774#endif 872#endif
775#if EV_USE_SELECT 873#if EV_USE_SELECT
776 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
777#endif 875#endif
778 876
779 ev_init (&sigev, sigcb); 877 ev_init (&sigev, sigcb);
780 ev_set_priority (&sigev, EV_MAXPRI); 878 ev_set_priority (&sigev, EV_MAXPRI);
781 } 879 }
782} 880}
783 881
784void 882static void
785loop_destroy (EV_P) 883loop_destroy (EV_P)
786{ 884{
787 int i; 885 int i;
788 886
789#if EV_USE_WIN32 887#if EV_USE_PORT
790 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
791#endif 889#endif
792#if EV_USE_KQUEUE 890#if EV_USE_KQUEUE
793 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 891 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
794#endif 892#endif
795#if EV_USE_EPOLL 893#if EV_USE_EPOLL
796 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 894 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
797#endif 895#endif
798#if EV_USE_POLL 896#if EV_USE_POLL
799 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 897 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
800#endif 898#endif
801#if EV_USE_SELECT 899#if EV_USE_SELECT
802 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
803#endif 901#endif
804 902
805 for (i = NUMPRI; i--; ) 903 for (i = NUMPRI; i--; )
806 array_free (pending, [i]); 904 array_free (pending, [i]);
807 905
808 /* have to use the microsoft-never-gets-it-right macro */ 906 /* have to use the microsoft-never-gets-it-right macro */
809 array_free_microshit (fdchange); 907 array_free (fdchange, EMPTY0);
810 array_free_microshit (timer); 908 array_free (timer, EMPTY0);
811#if EV_PERIODICS 909#if EV_PERIODICS
812 array_free_microshit (periodic); 910 array_free (periodic, EMPTY0);
813#endif 911#endif
814 array_free_microshit (idle); 912 array_free (idle, EMPTY0);
815 array_free_microshit (prepare); 913 array_free (prepare, EMPTY0);
816 array_free_microshit (check); 914 array_free (check, EMPTY0);
817 915
818 method = 0; 916 backend = 0;
819} 917}
820 918
821static void 919static void
822loop_fork (EV_P) 920loop_fork (EV_P)
823{ 921{
922#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif
925#if EV_USE_KQUEUE
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif
824#if EV_USE_EPOLL 928#if EV_USE_EPOLL
825 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
826#endif
827#if EV_USE_KQUEUE
828 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
829#endif 930#endif
830 931
831 if (ev_is_active (&sigev)) 932 if (ev_is_active (&sigev))
832 { 933 {
833 /* default loop */ 934 /* default loop */
846 postfork = 0; 947 postfork = 0;
847} 948}
848 949
849#if EV_MULTIPLICITY 950#if EV_MULTIPLICITY
850struct ev_loop * 951struct ev_loop *
851ev_loop_new (int methods) 952ev_loop_new (unsigned int flags)
852{ 953{
853 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 954 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854 955
855 memset (loop, 0, sizeof (struct ev_loop)); 956 memset (loop, 0, sizeof (struct ev_loop));
856 957
857 loop_init (EV_A_ methods); 958 loop_init (EV_A_ flags);
858 959
859 if (ev_method (EV_A)) 960 if (ev_backend (EV_A))
860 return loop; 961 return loop;
861 962
862 return 0; 963 return 0;
863} 964}
864 965
877 978
878#endif 979#endif
879 980
880#if EV_MULTIPLICITY 981#if EV_MULTIPLICITY
881struct ev_loop * 982struct ev_loop *
983ev_default_loop_init (unsigned int flags)
882#else 984#else
883int 985int
986ev_default_loop (unsigned int flags)
884#endif 987#endif
885ev_default_loop (int methods)
886{ 988{
887 if (sigpipe [0] == sigpipe [1]) 989 if (sigpipe [0] == sigpipe [1])
888 if (pipe (sigpipe)) 990 if (pipe (sigpipe))
889 return 0; 991 return 0;
890 992
891 if (!default_loop) 993 if (!ev_default_loop_ptr)
892 { 994 {
893#if EV_MULTIPLICITY 995#if EV_MULTIPLICITY
894 struct ev_loop *loop = default_loop = &default_loop_struct; 996 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
895#else 997#else
896 default_loop = 1; 998 ev_default_loop_ptr = 1;
897#endif 999#endif
898 1000
899 loop_init (EV_A_ methods); 1001 loop_init (EV_A_ flags);
900 1002
901 if (ev_method (EV_A)) 1003 if (ev_backend (EV_A))
902 { 1004 {
903 siginit (EV_A); 1005 siginit (EV_A);
904 1006
905#ifndef WIN32 1007#ifndef _WIN32
906 ev_signal_init (&childev, childcb, SIGCHLD); 1008 ev_signal_init (&childev, childcb, SIGCHLD);
907 ev_set_priority (&childev, EV_MAXPRI); 1009 ev_set_priority (&childev, EV_MAXPRI);
908 ev_signal_start (EV_A_ &childev); 1010 ev_signal_start (EV_A_ &childev);
909 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1011 ev_unref (EV_A); /* child watcher should not keep loop alive */
910#endif 1012#endif
911 } 1013 }
912 else 1014 else
913 default_loop = 0; 1015 ev_default_loop_ptr = 0;
914 } 1016 }
915 1017
916 return default_loop; 1018 return ev_default_loop_ptr;
917} 1019}
918 1020
919void 1021void
920ev_default_destroy (void) 1022ev_default_destroy (void)
921{ 1023{
922#if EV_MULTIPLICITY 1024#if EV_MULTIPLICITY
923 struct ev_loop *loop = default_loop; 1025 struct ev_loop *loop = ev_default_loop_ptr;
924#endif 1026#endif
925 1027
926#ifndef WIN32 1028#ifndef _WIN32
927 ev_ref (EV_A); /* child watcher */ 1029 ev_ref (EV_A); /* child watcher */
928 ev_signal_stop (EV_A_ &childev); 1030 ev_signal_stop (EV_A_ &childev);
929#endif 1031#endif
930 1032
931 ev_ref (EV_A); /* signal watcher */ 1033 ev_ref (EV_A); /* signal watcher */
939 1041
940void 1042void
941ev_default_fork (void) 1043ev_default_fork (void)
942{ 1044{
943#if EV_MULTIPLICITY 1045#if EV_MULTIPLICITY
944 struct ev_loop *loop = default_loop; 1046 struct ev_loop *loop = ev_default_loop_ptr;
945#endif 1047#endif
946 1048
947 if (method) 1049 if (backend)
948 postfork = 1; 1050 postfork = 1;
949} 1051}
950 1052
951/*****************************************************************************/ 1053/*****************************************************************************/
952 1054
960 return 1; 1062 return 1;
961 1063
962 return 0; 1064 return 0;
963} 1065}
964 1066
965static void 1067inline void
966call_pending (EV_P) 1068call_pending (EV_P)
967{ 1069{
968 int pri; 1070 int pri;
969 1071
970 for (pri = NUMPRI; pri--; ) 1072 for (pri = NUMPRI; pri--; )
971 while (pendingcnt [pri]) 1073 while (pendingcnt [pri])
972 { 1074 {
973 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
974 1076
975 if (p->w) 1077 if (expect_true (p->w))
976 { 1078 {
977 p->w->pending = 0; 1079 p->w->pending = 0;
978 EV_CB_INVOKE (p->w, p->events); 1080 EV_CB_INVOKE (p->w, p->events);
979 } 1081 }
980 } 1082 }
981} 1083}
982 1084
983static void 1085inline void
984timers_reify (EV_P) 1086timers_reify (EV_P)
985{ 1087{
986 while (timercnt && ((WT)timers [0])->at <= mn_now) 1088 while (timercnt && ((WT)timers [0])->at <= mn_now)
987 { 1089 {
988 struct ev_timer *w = timers [0]; 1090 ev_timer *w = timers [0];
989 1091
990 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1092 assert (("inactive timer on timer heap detected", ev_is_active (w)));
991 1093
992 /* first reschedule or stop timer */ 1094 /* first reschedule or stop timer */
993 if (w->repeat) 1095 if (w->repeat)
1006 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1007 } 1109 }
1008} 1110}
1009 1111
1010#if EV_PERIODICS 1112#if EV_PERIODICS
1011static void 1113inline void
1012periodics_reify (EV_P) 1114periodics_reify (EV_P)
1013{ 1115{
1014 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1015 { 1117 {
1016 struct ev_periodic *w = periodics [0]; 1118 ev_periodic *w = periodics [0];
1017 1119
1018 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1120 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1019 1121
1020 /* first reschedule or stop timer */ 1122 /* first reschedule or stop timer */
1021 if (w->reschedule_cb) 1123 if (w->reschedule_cb)
1022 { 1124 {
1023 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1125 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1024
1025 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1126 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026 downheap ((WT *)periodics, periodiccnt, 0); 1127 downheap ((WT *)periodics, periodiccnt, 0);
1027 } 1128 }
1028 else if (w->interval) 1129 else if (w->interval)
1029 { 1130 {
1044 int i; 1145 int i;
1045 1146
1046 /* adjust periodics after time jump */ 1147 /* adjust periodics after time jump */
1047 for (i = 0; i < periodiccnt; ++i) 1148 for (i = 0; i < periodiccnt; ++i)
1048 { 1149 {
1049 struct ev_periodic *w = periodics [i]; 1150 ev_periodic *w = periodics [i];
1050 1151
1051 if (w->reschedule_cb) 1152 if (w->reschedule_cb)
1052 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1153 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1053 else if (w->interval) 1154 else if (w->interval)
1054 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1155 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1076 ev_rt_now = ev_time (); 1177 ev_rt_now = ev_time ();
1077 return 1; 1178 return 1;
1078 } 1179 }
1079} 1180}
1080 1181
1081static void 1182inline void
1082time_update (EV_P) 1183time_update (EV_P)
1083{ 1184{
1084 int i; 1185 int i;
1085 1186
1086#if EV_USE_MONOTONIC 1187#if EV_USE_MONOTONIC
1144static int loop_done; 1245static int loop_done;
1145 1246
1146void 1247void
1147ev_loop (EV_P_ int flags) 1248ev_loop (EV_P_ int flags)
1148{ 1249{
1149 double block;
1150 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1250 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1251 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL;
1151 1253
1152 do 1254 while (activecnt)
1153 { 1255 {
1154 /* queue check watchers (and execute them) */ 1256 /* queue check watchers (and execute them) */
1155 if (expect_false (preparecnt)) 1257 if (expect_false (preparecnt))
1156 { 1258 {
1157 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1259 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1164 1266
1165 /* update fd-related kernel structures */ 1267 /* update fd-related kernel structures */
1166 fd_reify (EV_A); 1268 fd_reify (EV_A);
1167 1269
1168 /* calculate blocking time */ 1270 /* calculate blocking time */
1271 {
1272 double block;
1169 1273
1170 /* we only need this for !monotonic clock or timers, but as we basically 1274 if (flags & EVLOOP_NONBLOCK || idlecnt)
1171 always have timers, we just calculate it always */ 1275 block = 0.; /* do not block at all */
1276 else
1277 {
1278 /* update time to cancel out callback processing overhead */
1172#if EV_USE_MONOTONIC 1279#if EV_USE_MONOTONIC
1173 if (expect_true (have_monotonic)) 1280 if (expect_true (have_monotonic))
1174 time_update_monotonic (EV_A); 1281 time_update_monotonic (EV_A);
1175 else 1282 else
1176#endif 1283#endif
1177 { 1284 {
1178 ev_rt_now = ev_time (); 1285 ev_rt_now = ev_time ();
1179 mn_now = ev_rt_now; 1286 mn_now = ev_rt_now;
1180 } 1287 }
1181 1288
1182 if (flags & EVLOOP_NONBLOCK || idlecnt)
1183 block = 0.;
1184 else
1185 {
1186 block = MAX_BLOCKTIME; 1289 block = MAX_BLOCKTIME;
1187 1290
1188 if (timercnt) 1291 if (timercnt)
1189 { 1292 {
1190 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1191 if (block > to) block = to; 1294 if (block > to) block = to;
1192 } 1295 }
1193 1296
1194#if EV_PERIODICS 1297#if EV_PERIODICS
1195 if (periodiccnt) 1298 if (periodiccnt)
1196 { 1299 {
1197 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1198 if (block > to) block = to; 1301 if (block > to) block = to;
1199 } 1302 }
1200#endif 1303#endif
1201 1304
1202 if (block < 0.) block = 0.; 1305 if (expect_false (block < 0.)) block = 0.;
1203 } 1306 }
1204 1307
1205 method_poll (EV_A_ block); 1308 backend_poll (EV_A_ block);
1309 }
1206 1310
1207 /* update ev_rt_now, do magic */ 1311 /* update ev_rt_now, do magic */
1208 time_update (EV_A); 1312 time_update (EV_A);
1209 1313
1210 /* queue pending timers and reschedule them */ 1314 /* queue pending timers and reschedule them */
1216 /* queue idle watchers unless io or timers are pending */ 1320 /* queue idle watchers unless io or timers are pending */
1217 if (idlecnt && !any_pending (EV_A)) 1321 if (idlecnt && !any_pending (EV_A))
1218 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1219 1323
1220 /* queue check watchers, to be executed first */ 1324 /* queue check watchers, to be executed first */
1221 if (checkcnt) 1325 if (expect_false (checkcnt))
1222 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1326 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1223 1327
1224 call_pending (EV_A); 1328 call_pending (EV_A);
1225 }
1226 while (activecnt && !loop_done);
1227 1329
1228 if (loop_done != 2) 1330 if (expect_false (loop_done))
1229 loop_done = 0; 1331 break;
1332 }
1333
1334 if (loop_done == EVUNLOOP_ONE)
1335 loop_done = EVUNLOOP_CANCEL;
1230} 1336}
1231 1337
1232void 1338void
1233ev_unloop (EV_P_ int how) 1339ev_unloop (EV_P_ int how)
1234{ 1340{
1287} 1393}
1288 1394
1289/*****************************************************************************/ 1395/*****************************************************************************/
1290 1396
1291void 1397void
1292ev_io_start (EV_P_ struct ev_io *w) 1398ev_io_start (EV_P_ ev_io *w)
1293{ 1399{
1294 int fd = w->fd; 1400 int fd = w->fd;
1295 1401
1296 if (ev_is_active (w)) 1402 if (expect_false (ev_is_active (w)))
1297 return; 1403 return;
1298 1404
1299 assert (("ev_io_start called with negative fd", fd >= 0)); 1405 assert (("ev_io_start called with negative fd", fd >= 0));
1300 1406
1301 ev_start (EV_A_ (W)w, 1); 1407 ev_start (EV_A_ (W)w, 1);
1304 1410
1305 fd_change (EV_A_ fd); 1411 fd_change (EV_A_ fd);
1306} 1412}
1307 1413
1308void 1414void
1309ev_io_stop (EV_P_ struct ev_io *w) 1415ev_io_stop (EV_P_ ev_io *w)
1310{ 1416{
1311 ev_clear_pending (EV_A_ (W)w); 1417 ev_clear_pending (EV_A_ (W)w);
1312 if (!ev_is_active (w)) 1418 if (expect_false (!ev_is_active (w)))
1313 return; 1419 return;
1314 1420
1315 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1421 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316 1422
1317 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1423 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1319 1425
1320 fd_change (EV_A_ w->fd); 1426 fd_change (EV_A_ w->fd);
1321} 1427}
1322 1428
1323void 1429void
1324ev_timer_start (EV_P_ struct ev_timer *w) 1430ev_timer_start (EV_P_ ev_timer *w)
1325{ 1431{
1326 if (ev_is_active (w)) 1432 if (expect_false (ev_is_active (w)))
1327 return; 1433 return;
1328 1434
1329 ((WT)w)->at += mn_now; 1435 ((WT)w)->at += mn_now;
1330 1436
1331 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1332 1438
1333 ev_start (EV_A_ (W)w, ++timercnt); 1439 ev_start (EV_A_ (W)w, ++timercnt);
1334 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1440 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1335 timers [timercnt - 1] = w; 1441 timers [timercnt - 1] = w;
1336 upheap ((WT *)timers, timercnt - 1); 1442 upheap ((WT *)timers, timercnt - 1);
1337 1443
1338 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1339} 1445}
1340 1446
1341void 1447void
1342ev_timer_stop (EV_P_ struct ev_timer *w) 1448ev_timer_stop (EV_P_ ev_timer *w)
1343{ 1449{
1344 ev_clear_pending (EV_A_ (W)w); 1450 ev_clear_pending (EV_A_ (W)w);
1345 if (!ev_is_active (w)) 1451 if (expect_false (!ev_is_active (w)))
1346 return; 1452 return;
1347 1453
1348 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1349 1455
1350 if (((W)w)->active < timercnt--) 1456 if (expect_true (((W)w)->active < timercnt--))
1351 { 1457 {
1352 timers [((W)w)->active - 1] = timers [timercnt]; 1458 timers [((W)w)->active - 1] = timers [timercnt];
1353 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1354 } 1460 }
1355 1461
1357 1463
1358 ev_stop (EV_A_ (W)w); 1464 ev_stop (EV_A_ (W)w);
1359} 1465}
1360 1466
1361void 1467void
1362ev_timer_again (EV_P_ struct ev_timer *w) 1468ev_timer_again (EV_P_ ev_timer *w)
1363{ 1469{
1364 if (ev_is_active (w)) 1470 if (ev_is_active (w))
1365 { 1471 {
1366 if (w->repeat) 1472 if (w->repeat)
1367 { 1473 {
1370 } 1476 }
1371 else 1477 else
1372 ev_timer_stop (EV_A_ w); 1478 ev_timer_stop (EV_A_ w);
1373 } 1479 }
1374 else if (w->repeat) 1480 else if (w->repeat)
1481 {
1482 w->at = w->repeat;
1375 ev_timer_start (EV_A_ w); 1483 ev_timer_start (EV_A_ w);
1484 }
1376} 1485}
1377 1486
1378#if EV_PERIODICS 1487#if EV_PERIODICS
1379void 1488void
1380ev_periodic_start (EV_P_ struct ev_periodic *w) 1489ev_periodic_start (EV_P_ ev_periodic *w)
1381{ 1490{
1382 if (ev_is_active (w)) 1491 if (expect_false (ev_is_active (w)))
1383 return; 1492 return;
1384 1493
1385 if (w->reschedule_cb) 1494 if (w->reschedule_cb)
1386 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1495 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387 else if (w->interval) 1496 else if (w->interval)
1390 /* this formula differs from the one in periodic_reify because we do not always round up */ 1499 /* this formula differs from the one in periodic_reify because we do not always round up */
1391 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1500 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1392 } 1501 }
1393 1502
1394 ev_start (EV_A_ (W)w, ++periodiccnt); 1503 ev_start (EV_A_ (W)w, ++periodiccnt);
1395 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1504 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1396 periodics [periodiccnt - 1] = w; 1505 periodics [periodiccnt - 1] = w;
1397 upheap ((WT *)periodics, periodiccnt - 1); 1506 upheap ((WT *)periodics, periodiccnt - 1);
1398 1507
1399 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1400} 1509}
1401 1510
1402void 1511void
1403ev_periodic_stop (EV_P_ struct ev_periodic *w) 1512ev_periodic_stop (EV_P_ ev_periodic *w)
1404{ 1513{
1405 ev_clear_pending (EV_A_ (W)w); 1514 ev_clear_pending (EV_A_ (W)w);
1406 if (!ev_is_active (w)) 1515 if (expect_false (!ev_is_active (w)))
1407 return; 1516 return;
1408 1517
1409 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1410 1519
1411 if (((W)w)->active < periodiccnt--) 1520 if (expect_true (((W)w)->active < periodiccnt--))
1412 { 1521 {
1413 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1522 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1414 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1415 } 1524 }
1416 1525
1417 ev_stop (EV_A_ (W)w); 1526 ev_stop (EV_A_ (W)w);
1418} 1527}
1419 1528
1420void 1529void
1421ev_periodic_again (EV_P_ struct ev_periodic *w) 1530ev_periodic_again (EV_P_ ev_periodic *w)
1422{ 1531{
1423 /* TODO: use adjustheap and recalculation */ 1532 /* TODO: use adjustheap and recalculation */
1424 ev_periodic_stop (EV_A_ w); 1533 ev_periodic_stop (EV_A_ w);
1425 ev_periodic_start (EV_A_ w); 1534 ev_periodic_start (EV_A_ w);
1426} 1535}
1427#endif 1536#endif
1428 1537
1429void 1538void
1430ev_idle_start (EV_P_ struct ev_idle *w) 1539ev_idle_start (EV_P_ ev_idle *w)
1431{ 1540{
1432 if (ev_is_active (w)) 1541 if (expect_false (ev_is_active (w)))
1433 return; 1542 return;
1434 1543
1435 ev_start (EV_A_ (W)w, ++idlecnt); 1544 ev_start (EV_A_ (W)w, ++idlecnt);
1436 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); 1545 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1437 idles [idlecnt - 1] = w; 1546 idles [idlecnt - 1] = w;
1438} 1547}
1439 1548
1440void 1549void
1441ev_idle_stop (EV_P_ struct ev_idle *w) 1550ev_idle_stop (EV_P_ ev_idle *w)
1442{ 1551{
1443 ev_clear_pending (EV_A_ (W)w); 1552 ev_clear_pending (EV_A_ (W)w);
1444 if (ev_is_active (w)) 1553 if (expect_false (!ev_is_active (w)))
1445 return; 1554 return;
1446 1555
1447 idles [((W)w)->active - 1] = idles [--idlecnt]; 1556 idles [((W)w)->active - 1] = idles [--idlecnt];
1448 ev_stop (EV_A_ (W)w); 1557 ev_stop (EV_A_ (W)w);
1449} 1558}
1450 1559
1451void 1560void
1452ev_prepare_start (EV_P_ struct ev_prepare *w) 1561ev_prepare_start (EV_P_ ev_prepare *w)
1453{ 1562{
1454 if (ev_is_active (w)) 1563 if (expect_false (ev_is_active (w)))
1455 return; 1564 return;
1456 1565
1457 ev_start (EV_A_ (W)w, ++preparecnt); 1566 ev_start (EV_A_ (W)w, ++preparecnt);
1458 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); 1567 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1459 prepares [preparecnt - 1] = w; 1568 prepares [preparecnt - 1] = w;
1460} 1569}
1461 1570
1462void 1571void
1463ev_prepare_stop (EV_P_ struct ev_prepare *w) 1572ev_prepare_stop (EV_P_ ev_prepare *w)
1464{ 1573{
1465 ev_clear_pending (EV_A_ (W)w); 1574 ev_clear_pending (EV_A_ (W)w);
1466 if (!ev_is_active (w)) 1575 if (expect_false (!ev_is_active (w)))
1467 return; 1576 return;
1468 1577
1469 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1578 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1470 ev_stop (EV_A_ (W)w); 1579 ev_stop (EV_A_ (W)w);
1471} 1580}
1472 1581
1473void 1582void
1474ev_check_start (EV_P_ struct ev_check *w) 1583ev_check_start (EV_P_ ev_check *w)
1475{ 1584{
1476 if (ev_is_active (w)) 1585 if (expect_false (ev_is_active (w)))
1477 return; 1586 return;
1478 1587
1479 ev_start (EV_A_ (W)w, ++checkcnt); 1588 ev_start (EV_A_ (W)w, ++checkcnt);
1480 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); 1589 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1481 checks [checkcnt - 1] = w; 1590 checks [checkcnt - 1] = w;
1482} 1591}
1483 1592
1484void 1593void
1485ev_check_stop (EV_P_ struct ev_check *w) 1594ev_check_stop (EV_P_ ev_check *w)
1486{ 1595{
1487 ev_clear_pending (EV_A_ (W)w); 1596 ev_clear_pending (EV_A_ (W)w);
1488 if (!ev_is_active (w)) 1597 if (expect_false (!ev_is_active (w)))
1489 return; 1598 return;
1490 1599
1491 checks [((W)w)->active - 1] = checks [--checkcnt]; 1600 checks [((W)w)->active - 1] = checks [--checkcnt];
1492 ev_stop (EV_A_ (W)w); 1601 ev_stop (EV_A_ (W)w);
1493} 1602}
1495#ifndef SA_RESTART 1604#ifndef SA_RESTART
1496# define SA_RESTART 0 1605# define SA_RESTART 0
1497#endif 1606#endif
1498 1607
1499void 1608void
1500ev_signal_start (EV_P_ struct ev_signal *w) 1609ev_signal_start (EV_P_ ev_signal *w)
1501{ 1610{
1502#if EV_MULTIPLICITY 1611#if EV_MULTIPLICITY
1503 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1612 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1504#endif 1613#endif
1505 if (ev_is_active (w)) 1614 if (expect_false (ev_is_active (w)))
1506 return; 1615 return;
1507 1616
1508 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1617 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1509 1618
1510 ev_start (EV_A_ (W)w, 1); 1619 ev_start (EV_A_ (W)w, 1);
1511 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1620 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1512 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1621 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1513 1622
1514 if (!((WL)w)->next) 1623 if (!((WL)w)->next)
1515 { 1624 {
1516#if WIN32 1625#if _WIN32
1517 signal (w->signum, sighandler); 1626 signal (w->signum, sighandler);
1518#else 1627#else
1519 struct sigaction sa; 1628 struct sigaction sa;
1520 sa.sa_handler = sighandler; 1629 sa.sa_handler = sighandler;
1521 sigfillset (&sa.sa_mask); 1630 sigfillset (&sa.sa_mask);
1524#endif 1633#endif
1525 } 1634 }
1526} 1635}
1527 1636
1528void 1637void
1529ev_signal_stop (EV_P_ struct ev_signal *w) 1638ev_signal_stop (EV_P_ ev_signal *w)
1530{ 1639{
1531 ev_clear_pending (EV_A_ (W)w); 1640 ev_clear_pending (EV_A_ (W)w);
1532 if (!ev_is_active (w)) 1641 if (expect_false (!ev_is_active (w)))
1533 return; 1642 return;
1534 1643
1535 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1644 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1536 ev_stop (EV_A_ (W)w); 1645 ev_stop (EV_A_ (W)w);
1537 1646
1538 if (!signals [w->signum - 1].head) 1647 if (!signals [w->signum - 1].head)
1539 signal (w->signum, SIG_DFL); 1648 signal (w->signum, SIG_DFL);
1540} 1649}
1541 1650
1542void 1651void
1543ev_child_start (EV_P_ struct ev_child *w) 1652ev_child_start (EV_P_ ev_child *w)
1544{ 1653{
1545#if EV_MULTIPLICITY 1654#if EV_MULTIPLICITY
1546 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1655 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1547#endif 1656#endif
1548 if (ev_is_active (w)) 1657 if (expect_false (ev_is_active (w)))
1549 return; 1658 return;
1550 1659
1551 ev_start (EV_A_ (W)w, 1); 1660 ev_start (EV_A_ (W)w, 1);
1552 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1553} 1662}
1554 1663
1555void 1664void
1556ev_child_stop (EV_P_ struct ev_child *w) 1665ev_child_stop (EV_P_ ev_child *w)
1557{ 1666{
1558 ev_clear_pending (EV_A_ (W)w); 1667 ev_clear_pending (EV_A_ (W)w);
1559 if (!ev_is_active (w)) 1668 if (expect_false (!ev_is_active (w)))
1560 return; 1669 return;
1561 1670
1562 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1563 ev_stop (EV_A_ (W)w); 1672 ev_stop (EV_A_ (W)w);
1564} 1673}
1565 1674
1675#if EV_MULTIPLICITY
1676void
1677ev_embed_loop (EV_P_ ev_embed *w)
1678{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK);
1680}
1681
1682static void
1683embed_cb (EV_P_ ev_io *io, int revents)
1684{
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686
1687 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else
1690 ev_embed_loop (loop, w);
1691}
1692
1693void
1694ev_embed_start (EV_P_ ev_embed *w)
1695{
1696 if (expect_false (ev_is_active (w)))
1697 return;
1698
1699 {
1700 struct ev_loop *loop = w->loop;
1701 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1703 }
1704
1705 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io);
1707 ev_start (EV_A_ (W)w, 1);
1708}
1709
1710void
1711ev_embed_stop (EV_P_ ev_embed *w)
1712{
1713 ev_clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w)))
1715 return;
1716
1717 ev_io_stop (EV_A_ &w->io);
1718 ev_stop (EV_A_ (W)w);
1719}
1720#endif
1721
1566/*****************************************************************************/ 1722/*****************************************************************************/
1567 1723
1568struct ev_once 1724struct ev_once
1569{ 1725{
1570 struct ev_io io; 1726 ev_io io;
1571 struct ev_timer to; 1727 ev_timer to;
1572 void (*cb)(int revents, void *arg); 1728 void (*cb)(int revents, void *arg);
1573 void *arg; 1729 void *arg;
1574}; 1730};
1575 1731
1576static void 1732static void
1585 1741
1586 cb (revents, arg); 1742 cb (revents, arg);
1587} 1743}
1588 1744
1589static void 1745static void
1590once_cb_io (EV_P_ struct ev_io *w, int revents) 1746once_cb_io (EV_P_ ev_io *w, int revents)
1591{ 1747{
1592 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1748 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1593} 1749}
1594 1750
1595static void 1751static void
1596once_cb_to (EV_P_ struct ev_timer *w, int revents) 1752once_cb_to (EV_P_ ev_timer *w, int revents)
1597{ 1753{
1598 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1754 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1599} 1755}
1600 1756
1601void 1757void
1602ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1758ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1603{ 1759{
1604 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1760 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1605 1761
1606 if (!once) 1762 if (expect_false (!once))
1763 {
1607 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1764 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1608 else 1765 return;
1609 { 1766 }
1767
1610 once->cb = cb; 1768 once->cb = cb;
1611 once->arg = arg; 1769 once->arg = arg;
1612 1770
1613 ev_init (&once->io, once_cb_io); 1771 ev_init (&once->io, once_cb_io);
1614 if (fd >= 0) 1772 if (fd >= 0)
1615 { 1773 {
1616 ev_io_set (&once->io, fd, events); 1774 ev_io_set (&once->io, fd, events);
1617 ev_io_start (EV_A_ &once->io); 1775 ev_io_start (EV_A_ &once->io);
1618 } 1776 }
1619 1777
1620 ev_init (&once->to, once_cb_to); 1778 ev_init (&once->to, once_cb_to);
1621 if (timeout >= 0.) 1779 if (timeout >= 0.)
1622 { 1780 {
1623 ev_timer_set (&once->to, timeout, 0.); 1781 ev_timer_set (&once->to, timeout, 0.);
1624 ev_timer_start (EV_A_ &once->to); 1782 ev_timer_start (EV_A_ &once->to);
1625 }
1626 } 1783 }
1627} 1784}
1628 1785
1629#ifdef __cplusplus 1786#ifdef __cplusplus
1630} 1787}

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines