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Comparing libev/ev.c (file contents):
Revision 1.78 by root, Thu Nov 8 21:08:56 2007 UTC vs.
Revision 1.133 by root, Fri Nov 23 11:32:22 2007 UTC

26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
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
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# 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
53# endif 97# endif
54 98
55#endif 99#endif
56 100
57#include <math.h> 101#include <math.h>
66#include <sys/types.h> 110#include <sys/types.h>
67#include <time.h> 111#include <time.h>
68 112
69#include <signal.h> 113#include <signal.h>
70 114
71#ifndef WIN32 115#ifndef _WIN32
72# include <unistd.h> 116# include <unistd.h>
73# include <sys/time.h> 117# include <sys/time.h>
74# 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
75#endif 124# endif
125#endif
126
76/**/ 127/**/
77 128
78#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
79# 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
80#endif 135#endif
81 136
82#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
84#endif 139#endif
85 140
86#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
87# 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
88#endif 147#endif
89 148
90#ifndef EV_USE_EPOLL 149#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 150# define EV_USE_EPOLL 0
92#endif 151#endif
93 152
94#ifndef EV_USE_KQUEUE 153#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 154# define EV_USE_KQUEUE 0
96#endif 155#endif
97 156
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME 157#ifndef EV_USE_PORT
109# define EV_USE_REALTIME 1 158# define EV_USE_PORT 0
110#endif 159#endif
111 160
112/**/ 161/**/
113 162
114#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
119#ifndef CLOCK_REALTIME 168#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 169# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 170# define EV_USE_REALTIME 0
122#endif 171#endif
123 172
173#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h>
175#endif
176
124/**/ 177/**/
125 178
126#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) */
127#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) */
128#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 */
129/*#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 */
130 183
184#ifdef EV_H
185# include EV_H
186#else
131#include "ev.h" 187# include "ev.h"
188#endif
132 189
133#if __GNUC__ >= 3 190#if __GNUC__ >= 3
134# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 192# define inline static inline
136#else 193#else
137# define expect(expr,value) (expr) 194# define expect(expr,value) (expr)
138# define inline static 195# define inline static
139#endif 196#endif
140 197
142#define expect_true(expr) expect ((expr) != 0, 1) 199#define expect_true(expr) expect ((expr) != 0, 1)
143 200
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 202#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146 203
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */
206
147typedef struct ev_watcher *W; 207typedef struct ev_watcher *W;
148typedef struct ev_watcher_list *WL; 208typedef struct ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 209typedef struct ev_watcher_time *WT;
150 210
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152 212
213#ifdef _WIN32
153#include "ev_win32.c" 214# include "ev_win32.c"
215#endif
154 216
155/*****************************************************************************/ 217/*****************************************************************************/
156 218
157static void (*syserr_cb)(const char *msg); 219static void (*syserr_cb)(const char *msg);
158 220
205typedef struct 267typedef struct
206{ 268{
207 WL head; 269 WL head;
208 unsigned char events; 270 unsigned char events;
209 unsigned char reify; 271 unsigned char reify;
272#if EV_SELECT_IS_WINSOCKET
273 SOCKET handle;
274#endif
210} ANFD; 275} ANFD;
211 276
212typedef struct 277typedef struct
213{ 278{
214 W w; 279 W w;
215 int events; 280 int events;
216} ANPENDING; 281} ANPENDING;
217 282
218#if EV_MULTIPLICITY 283#if EV_MULTIPLICITY
219 284
220struct ev_loop 285 struct ev_loop
221{ 286 {
287 ev_tstamp ev_rt_now;
288 #define ev_rt_now ((loop)->ev_rt_now)
222# define VAR(name,decl) decl; 289 #define VAR(name,decl) decl;
223# include "ev_vars.h" 290 #include "ev_vars.h"
224};
225# undef VAR 291 #undef VAR
292 };
226# include "ev_wrap.h" 293 #include "ev_wrap.h"
294
295 static struct ev_loop default_loop_struct;
296 struct ev_loop *ev_default_loop_ptr;
227 297
228#else 298#else
229 299
300 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 301 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 302 #include "ev_vars.h"
232# undef VAR 303 #undef VAR
304
305 static int ev_default_loop_ptr;
233 306
234#endif 307#endif
235 308
236/*****************************************************************************/ 309/*****************************************************************************/
237 310
238inline ev_tstamp 311ev_tstamp
239ev_time (void) 312ev_time (void)
240{ 313{
241#if EV_USE_REALTIME 314#if EV_USE_REALTIME
242 struct timespec ts; 315 struct timespec ts;
243 clock_gettime (CLOCK_REALTIME, &ts); 316 clock_gettime (CLOCK_REALTIME, &ts);
262#endif 335#endif
263 336
264 return ev_time (); 337 return ev_time ();
265} 338}
266 339
340#if EV_MULTIPLICITY
267ev_tstamp 341ev_tstamp
268ev_now (EV_P) 342ev_now (EV_P)
269{ 343{
270 return rt_now; 344 return ev_rt_now;
271} 345}
346#endif
272 347
273#define array_roundsize(type,n) ((n) | 4 & ~3) 348#define array_roundsize(type,n) (((n) | 4) & ~3)
274 349
275#define array_needsize(type,base,cur,cnt,init) \ 350#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 351 if (expect_false ((cnt) > cur)) \
277 { \ 352 { \
278 int newcnt = cur; \ 353 int newcnt = cur; \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \ 368 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 } 371 }
297 372
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303#define array_free(stem, idx) \ 373#define array_free(stem, idx) \
304 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;
305 375
306/*****************************************************************************/ 376/*****************************************************************************/
307 377
321void 391void
322ev_feed_event (EV_P_ void *w, int revents) 392ev_feed_event (EV_P_ void *w, int revents)
323{ 393{
324 W w_ = (W)w; 394 W w_ = (W)w;
325 395
326 if (w_->pending) 396 if (expect_false (w_->pending))
327 { 397 {
328 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329 return; 399 return;
330 } 400 }
331 401
332 w_->pending = ++pendingcnt [ABSPRI (w_)]; 402 w_->pending = ++pendingcnt [ABSPRI (w_)];
333 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);
334 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336} 406}
337 407
338static void 408static void
342 412
343 for (i = 0; i < eventcnt; ++i) 413 for (i = 0; i < eventcnt; ++i)
344 ev_feed_event (EV_A_ events [i], type); 414 ev_feed_event (EV_A_ events [i], type);
345} 415}
346 416
347static void 417inline void
348fd_event (EV_P_ int fd, int events) 418fd_event (EV_P_ int fd, int revents)
349{ 419{
350 ANFD *anfd = anfds + fd; 420 ANFD *anfd = anfds + fd;
351 struct ev_io *w; 421 struct ev_io *w;
352 422
353 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 423 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
354 { 424 {
355 int ev = w->events & events; 425 int ev = w->events & revents;
356 426
357 if (ev) 427 if (ev)
358 ev_feed_event (EV_A_ (W)w, ev); 428 ev_feed_event (EV_A_ (W)w, ev);
359 } 429 }
360} 430}
361 431
432void
433ev_feed_fd_event (EV_P_ int fd, int revents)
434{
435 fd_event (EV_A_ fd, revents);
436}
437
362/*****************************************************************************/ 438/*****************************************************************************/
363 439
364static void 440inline void
365fd_reify (EV_P) 441fd_reify (EV_P)
366{ 442{
367 int i; 443 int i;
368 444
369 for (i = 0; i < fdchangecnt; ++i) 445 for (i = 0; i < fdchangecnt; ++i)
375 int events = 0; 451 int events = 0;
376 452
377 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 453 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
378 events |= w->events; 454 events |= w->events;
379 455
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
380 anfd->reify = 0; 465 anfd->reify = 0;
381 466
382 method_modify (EV_A_ fd, anfd->events, events); 467 backend_modify (EV_A_ fd, anfd->events, events);
383 anfd->events = events; 468 anfd->events = events;
384 } 469 }
385 470
386 fdchangecnt = 0; 471 fdchangecnt = 0;
387} 472}
388 473
389static void 474static void
390fd_change (EV_P_ int fd) 475fd_change (EV_P_ int fd)
391{ 476{
392 if (anfds [fd].reify) 477 if (expect_false (anfds [fd].reify))
393 return; 478 return;
394 479
395 anfds [fd].reify = 1; 480 anfds [fd].reify = 1;
396 481
397 ++fdchangecnt; 482 ++fdchangecnt;
398 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
399 fdchanges [fdchangecnt - 1] = fd; 484 fdchanges [fdchangecnt - 1] = fd;
400} 485}
401 486
402static void 487static void
403fd_kill (EV_P_ int fd) 488fd_kill (EV_P_ int fd)
409 ev_io_stop (EV_A_ w); 494 ev_io_stop (EV_A_ w);
410 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);
411 } 496 }
412} 497}
413 498
414static int 499inline int
415fd_valid (int fd) 500fd_valid (int fd)
416{ 501{
417#ifdef WIN32 502#ifdef _WIN32
418 return !!win32_get_osfhandle (fd); 503 return _get_osfhandle (fd) != -1;
419#else 504#else
420 return fcntl (fd, F_GETFD) != -1; 505 return fcntl (fd, F_GETFD) != -1;
421#endif 506#endif
422} 507}
423 508
445 fd_kill (EV_A_ fd); 530 fd_kill (EV_A_ fd);
446 return; 531 return;
447 } 532 }
448} 533}
449 534
450/* 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 */
451static void 536static void
452fd_rearm_all (EV_P) 537fd_rearm_all (EV_P)
453{ 538{
454 int fd; 539 int fd;
455 540
503 588
504 heap [k] = w; 589 heap [k] = w;
505 ((W)heap [k])->active = k + 1; 590 ((W)heap [k])->active = k + 1;
506} 591}
507 592
593inline void
594adjustheap (WT *heap, int N, int k)
595{
596 upheap (heap, k);
597 downheap (heap, N, k);
598}
599
508/*****************************************************************************/ 600/*****************************************************************************/
509 601
510typedef struct 602typedef struct
511{ 603{
512 WL head; 604 WL head;
533} 625}
534 626
535static void 627static void
536sighandler (int signum) 628sighandler (int signum)
537{ 629{
538#if WIN32 630#if _WIN32
539 signal (signum, sighandler); 631 signal (signum, sighandler);
540#endif 632#endif
541 633
542 signals [signum - 1].gotsig = 1; 634 signals [signum - 1].gotsig = 1;
543 635
544 if (!gotsig) 636 if (!gotsig)
545 { 637 {
546 int old_errno = errno; 638 int old_errno = errno;
547 gotsig = 1; 639 gotsig = 1;
548#ifdef WIN32
549 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
550#else
551 write (sigpipe [1], &signum, 1); 640 write (sigpipe [1], &signum, 1);
552#endif
553 errno = old_errno; 641 errno = old_errno;
554 } 642 }
555} 643}
556 644
645void
646ev_feed_signal_event (EV_P_ int signum)
647{
648 WL w;
649
650#if EV_MULTIPLICITY
651 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
652#endif
653
654 --signum;
655
656 if (signum < 0 || signum >= signalmax)
657 return;
658
659 signals [signum].gotsig = 0;
660
661 for (w = signals [signum].head; w; w = w->next)
662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
663}
664
557static void 665static void
558sigcb (EV_P_ struct ev_io *iow, int revents) 666sigcb (EV_P_ struct ev_io *iow, int revents)
559{ 667{
560 WL w;
561 int signum; 668 int signum;
562 669
563#ifdef WIN32
564 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
565#else
566 read (sigpipe [0], &revents, 1); 670 read (sigpipe [0], &revents, 1);
567#endif
568 gotsig = 0; 671 gotsig = 0;
569 672
570 for (signum = signalmax; signum--; ) 673 for (signum = signalmax; signum--; )
571 if (signals [signum].gotsig) 674 if (signals [signum].gotsig)
572 { 675 ev_feed_signal_event (EV_A_ signum + 1);
573 signals [signum].gotsig = 0; 676}
574 677
575 for (w = signals [signum].head; w; w = w->next) 678static void
576 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 679fd_intern (int fd)
577 } 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
578} 688}
579 689
580static void 690static void
581siginit (EV_P) 691siginit (EV_P)
582{ 692{
583#ifndef WIN32 693 fd_intern (sigpipe [0]);
584 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 694 fd_intern (sigpipe [1]);
585 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
586
587 /* rather than sort out wether we really need nb, set it */
588 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
589 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
590#endif
591 695
592 ev_io_set (&sigev, sigpipe [0], EV_READ); 696 ev_io_set (&sigev, sigpipe [0], EV_READ);
593 ev_io_start (EV_A_ &sigev); 697 ev_io_start (EV_A_ &sigev);
594 ev_unref (EV_A); /* child watcher should not keep loop alive */ 698 ev_unref (EV_A); /* child watcher should not keep loop alive */
595} 699}
596 700
597/*****************************************************************************/ 701/*****************************************************************************/
598 702
599static struct ev_child *childs [PID_HASHSIZE]; 703static struct ev_child *childs [PID_HASHSIZE];
600 704
601#ifndef WIN32 705#ifndef _WIN32
602 706
603static struct ev_signal childev; 707static struct ev_signal childev;
604 708
605#ifndef WCONTINUED 709#ifndef WCONTINUED
606# define WCONTINUED 0 710# define WCONTINUED 0
627 int pid, status; 731 int pid, status;
628 732
629 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
630 { 734 {
631 /* 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 */
632 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
633 738
634 child_reap (EV_A_ sw, pid, pid, status); 739 child_reap (EV_A_ sw, pid, pid, status);
635 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 */
636 } 741 }
637} 742}
638 743
639#endif 744#endif
640 745
641/*****************************************************************************/ 746/*****************************************************************************/
642 747
748#if EV_USE_PORT
749# include "ev_port.c"
750#endif
643#if EV_USE_KQUEUE 751#if EV_USE_KQUEUE
644# include "ev_kqueue.c" 752# include "ev_kqueue.c"
645#endif 753#endif
646#if EV_USE_EPOLL 754#if EV_USE_EPOLL
647# include "ev_epoll.c" 755# include "ev_epoll.c"
667 775
668/* 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 */
669static int 777static int
670enable_secure (void) 778enable_secure (void)
671{ 779{
672#ifdef WIN32 780#ifdef _WIN32
673 return 0; 781 return 0;
674#else 782#else
675 return getuid () != geteuid () 783 return getuid () != geteuid ()
676 || getgid () != getegid (); 784 || getgid () != getegid ();
677#endif 785#endif
678} 786}
679 787
680int 788unsigned int
681ev_method (EV_P) 789ev_supported_backends (void)
682{ 790{
683 return method; 791 unsigned int flags = 0;
684}
685 792
686static void 793 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
687loop_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)
688{ 804{
689 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_backend (EV_P)
822{
823 return backend;
824}
825
826static void
827loop_init (EV_P_ unsigned int flags)
828{
829 if (!backend)
690 { 830 {
691#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
692 { 832 {
693 struct timespec ts; 833 struct timespec ts;
694 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 834 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
695 have_monotonic = 1; 835 have_monotonic = 1;
696 } 836 }
697#endif 837#endif
698 838
699 rt_now = ev_time (); 839 ev_rt_now = ev_time ();
700 mn_now = get_clock (); 840 mn_now = get_clock ();
701 now_floor = mn_now; 841 now_floor = mn_now;
702 rtmn_diff = rt_now - mn_now; 842 rtmn_diff = ev_rt_now - mn_now;
703 843
704 if (methods == EVMETHOD_AUTO) 844 if (!(flags & EVFLAG_NOENV)
705 if (!enable_secure () && getenv ("LIBEV_METHODS")) 845 && !enable_secure ()
846 && getenv ("LIBEV_FLAGS"))
706 methods = atoi (getenv ("LIBEV_METHODS")); 847 flags = atoi (getenv ("LIBEV_FLAGS"));
707 else
708 methods = EVMETHOD_ANY;
709 848
710 method = 0; 849 if (!(flags & 0x0000ffffUL))
711#if EV_USE_WIN32 850 flags |= ev_recommended_backends ();
712 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 851
852 backend = 0;
853#if EV_USE_PORT
854 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
713#endif 855#endif
714#if EV_USE_KQUEUE 856#if EV_USE_KQUEUE
715 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 857 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
716#endif 858#endif
717#if EV_USE_EPOLL 859#if EV_USE_EPOLL
718 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 860 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
719#endif 861#endif
720#if EV_USE_POLL 862#if EV_USE_POLL
721 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 863 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
722#endif 864#endif
723#if EV_USE_SELECT 865#if EV_USE_SELECT
724 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 866 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
725#endif 867#endif
726 868
727 ev_watcher_init (&sigev, sigcb); 869 ev_init (&sigev, sigcb);
728 ev_set_priority (&sigev, EV_MAXPRI); 870 ev_set_priority (&sigev, EV_MAXPRI);
729 } 871 }
730} 872}
731 873
732void 874static void
733loop_destroy (EV_P) 875loop_destroy (EV_P)
734{ 876{
735 int i; 877 int i;
736 878
737#if EV_USE_WIN32 879#if EV_USE_PORT
738 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 880 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
739#endif 881#endif
740#if EV_USE_KQUEUE 882#if EV_USE_KQUEUE
741 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 883 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
742#endif 884#endif
743#if EV_USE_EPOLL 885#if EV_USE_EPOLL
744 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 886 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
745#endif 887#endif
746#if EV_USE_POLL 888#if EV_USE_POLL
747 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 889 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
748#endif 890#endif
749#if EV_USE_SELECT 891#if EV_USE_SELECT
750 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 892 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
751#endif 893#endif
752 894
753 for (i = NUMPRI; i--; ) 895 for (i = NUMPRI; i--; )
754 array_free (pending, [i]); 896 array_free (pending, [i]);
755 897
756 /* have to use the microsoft-never-gets-it-right macro */ 898 /* have to use the microsoft-never-gets-it-right macro */
757 array_free_microshit (fdchange); 899 array_free (fdchange, EMPTY0);
758 array_free_microshit (timer); 900 array_free (timer, EMPTY0);
759 array_free_microshit (periodic); 901#if EV_PERIODICS
760 array_free_microshit (idle); 902 array_free (periodic, EMPTY0);
761 array_free_microshit (prepare); 903#endif
762 array_free_microshit (check); 904 array_free (idle, EMPTY0);
905 array_free (prepare, EMPTY0);
906 array_free (check, EMPTY0);
763 907
764 method = 0; 908 backend = 0;
765} 909}
766 910
767static void 911static void
768loop_fork (EV_P) 912loop_fork (EV_P)
769{ 913{
914#if EV_USE_PORT
915 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
916#endif
917#if EV_USE_KQUEUE
918 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
919#endif
770#if EV_USE_EPOLL 920#if EV_USE_EPOLL
771 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 921 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
772#endif
773#if EV_USE_KQUEUE
774 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
775#endif 922#endif
776 923
777 if (ev_is_active (&sigev)) 924 if (ev_is_active (&sigev))
778 { 925 {
779 /* default loop */ 926 /* default loop */
792 postfork = 0; 939 postfork = 0;
793} 940}
794 941
795#if EV_MULTIPLICITY 942#if EV_MULTIPLICITY
796struct ev_loop * 943struct ev_loop *
797ev_loop_new (int methods) 944ev_loop_new (unsigned int flags)
798{ 945{
799 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 946 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
800 947
801 memset (loop, 0, sizeof (struct ev_loop)); 948 memset (loop, 0, sizeof (struct ev_loop));
802 949
803 loop_init (EV_A_ methods); 950 loop_init (EV_A_ flags);
804 951
805 if (ev_method (EV_A)) 952 if (ev_backend (EV_A))
806 return loop; 953 return loop;
807 954
808 return 0; 955 return 0;
809} 956}
810 957
822} 969}
823 970
824#endif 971#endif
825 972
826#if EV_MULTIPLICITY 973#if EV_MULTIPLICITY
827struct ev_loop default_loop_struct;
828static struct ev_loop *default_loop;
829
830struct ev_loop * 974struct ev_loop *
975ev_default_loop_init (unsigned int flags)
831#else 976#else
832static int default_loop;
833
834int 977int
978ev_default_loop (unsigned int flags)
835#endif 979#endif
836ev_default_loop (int methods)
837{ 980{
838 if (sigpipe [0] == sigpipe [1]) 981 if (sigpipe [0] == sigpipe [1])
839 if (pipe (sigpipe)) 982 if (pipe (sigpipe))
840 return 0; 983 return 0;
841 984
842 if (!default_loop) 985 if (!ev_default_loop_ptr)
843 { 986 {
844#if EV_MULTIPLICITY 987#if EV_MULTIPLICITY
845 struct ev_loop *loop = default_loop = &default_loop_struct; 988 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
846#else 989#else
847 default_loop = 1; 990 ev_default_loop_ptr = 1;
848#endif 991#endif
849 992
850 loop_init (EV_A_ methods); 993 loop_init (EV_A_ flags);
851 994
852 if (ev_method (EV_A)) 995 if (ev_backend (EV_A))
853 { 996 {
854 siginit (EV_A); 997 siginit (EV_A);
855 998
856#ifndef WIN32 999#ifndef _WIN32
857 ev_signal_init (&childev, childcb, SIGCHLD); 1000 ev_signal_init (&childev, childcb, SIGCHLD);
858 ev_set_priority (&childev, EV_MAXPRI); 1001 ev_set_priority (&childev, EV_MAXPRI);
859 ev_signal_start (EV_A_ &childev); 1002 ev_signal_start (EV_A_ &childev);
860 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1003 ev_unref (EV_A); /* child watcher should not keep loop alive */
861#endif 1004#endif
862 } 1005 }
863 else 1006 else
864 default_loop = 0; 1007 ev_default_loop_ptr = 0;
865 } 1008 }
866 1009
867 return default_loop; 1010 return ev_default_loop_ptr;
868} 1011}
869 1012
870void 1013void
871ev_default_destroy (void) 1014ev_default_destroy (void)
872{ 1015{
873#if EV_MULTIPLICITY 1016#if EV_MULTIPLICITY
874 struct ev_loop *loop = default_loop; 1017 struct ev_loop *loop = ev_default_loop_ptr;
875#endif 1018#endif
876 1019
877#ifndef WIN32 1020#ifndef _WIN32
878 ev_ref (EV_A); /* child watcher */ 1021 ev_ref (EV_A); /* child watcher */
879 ev_signal_stop (EV_A_ &childev); 1022 ev_signal_stop (EV_A_ &childev);
880#endif 1023#endif
881 1024
882 ev_ref (EV_A); /* signal watcher */ 1025 ev_ref (EV_A); /* signal watcher */
890 1033
891void 1034void
892ev_default_fork (void) 1035ev_default_fork (void)
893{ 1036{
894#if EV_MULTIPLICITY 1037#if EV_MULTIPLICITY
895 struct ev_loop *loop = default_loop; 1038 struct ev_loop *loop = ev_default_loop_ptr;
896#endif 1039#endif
897 1040
898 if (method) 1041 if (backend)
899 postfork = 1; 1042 postfork = 1;
900} 1043}
901 1044
902/*****************************************************************************/ 1045/*****************************************************************************/
903 1046
911 return 1; 1054 return 1;
912 1055
913 return 0; 1056 return 0;
914} 1057}
915 1058
916static void 1059inline void
917call_pending (EV_P) 1060call_pending (EV_P)
918{ 1061{
919 int pri; 1062 int pri;
920 1063
921 for (pri = NUMPRI; pri--; ) 1064 for (pri = NUMPRI; pri--; )
922 while (pendingcnt [pri]) 1065 while (pendingcnt [pri])
923 { 1066 {
924 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1067 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
925 1068
926 if (p->w) 1069 if (expect_true (p->w))
927 { 1070 {
928 p->w->pending = 0; 1071 p->w->pending = 0;
929 p->w->cb (EV_A_ p->w, p->events); 1072 EV_CB_INVOKE (p->w, p->events);
930 } 1073 }
931 } 1074 }
932} 1075}
933 1076
934static void 1077inline void
935timers_reify (EV_P) 1078timers_reify (EV_P)
936{ 1079{
937 while (timercnt && ((WT)timers [0])->at <= mn_now) 1080 while (timercnt && ((WT)timers [0])->at <= mn_now)
938 { 1081 {
939 struct ev_timer *w = timers [0]; 1082 struct ev_timer *w = timers [0];
942 1085
943 /* first reschedule or stop timer */ 1086 /* first reschedule or stop timer */
944 if (w->repeat) 1087 if (w->repeat)
945 { 1088 {
946 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1089 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1090
947 ((WT)w)->at = mn_now + w->repeat; 1091 ((WT)w)->at += w->repeat;
1092 if (((WT)w)->at < mn_now)
1093 ((WT)w)->at = mn_now;
1094
948 downheap ((WT *)timers, timercnt, 0); 1095 downheap ((WT *)timers, timercnt, 0);
949 } 1096 }
950 else 1097 else
951 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1098 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
952 1099
953 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1100 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
954 } 1101 }
955} 1102}
956 1103
957static void 1104#if EV_PERIODICS
1105inline void
958periodics_reify (EV_P) 1106periodics_reify (EV_P)
959{ 1107{
960 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1108 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
961 { 1109 {
962 struct ev_periodic *w = periodics [0]; 1110 struct ev_periodic *w = periodics [0];
963 1111
964 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1112 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
965 1113
966 /* first reschedule or stop timer */ 1114 /* first reschedule or stop timer */
967 if (w->reschedule_cb) 1115 if (w->reschedule_cb)
968 { 1116 {
969 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1117 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
970
971 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1118 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
972 downheap ((WT *)periodics, periodiccnt, 0); 1119 downheap ((WT *)periodics, periodiccnt, 0);
973 } 1120 }
974 else if (w->interval) 1121 else if (w->interval)
975 { 1122 {
976 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1123 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
977 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1124 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
978 downheap ((WT *)periodics, periodiccnt, 0); 1125 downheap ((WT *)periodics, periodiccnt, 0);
979 } 1126 }
980 else 1127 else
981 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1128 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
982 1129
993 for (i = 0; i < periodiccnt; ++i) 1140 for (i = 0; i < periodiccnt; ++i)
994 { 1141 {
995 struct ev_periodic *w = periodics [i]; 1142 struct ev_periodic *w = periodics [i];
996 1143
997 if (w->reschedule_cb) 1144 if (w->reschedule_cb)
998 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1145 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
999 else if (w->interval) 1146 else if (w->interval)
1000 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1147 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1001 } 1148 }
1002 1149
1003 /* now rebuild the heap */ 1150 /* now rebuild the heap */
1004 for (i = periodiccnt >> 1; i--; ) 1151 for (i = periodiccnt >> 1; i--; )
1005 downheap ((WT *)periodics, periodiccnt, i); 1152 downheap ((WT *)periodics, periodiccnt, i);
1006} 1153}
1154#endif
1007 1155
1008inline int 1156inline int
1009time_update_monotonic (EV_P) 1157time_update_monotonic (EV_P)
1010{ 1158{
1011 mn_now = get_clock (); 1159 mn_now = get_clock ();
1012 1160
1013 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1161 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1014 { 1162 {
1015 rt_now = rtmn_diff + mn_now; 1163 ev_rt_now = rtmn_diff + mn_now;
1016 return 0; 1164 return 0;
1017 } 1165 }
1018 else 1166 else
1019 { 1167 {
1020 now_floor = mn_now; 1168 now_floor = mn_now;
1021 rt_now = ev_time (); 1169 ev_rt_now = ev_time ();
1022 return 1; 1170 return 1;
1023 } 1171 }
1024} 1172}
1025 1173
1026static void 1174inline void
1027time_update (EV_P) 1175time_update (EV_P)
1028{ 1176{
1029 int i; 1177 int i;
1030 1178
1031#if EV_USE_MONOTONIC 1179#if EV_USE_MONOTONIC
1035 { 1183 {
1036 ev_tstamp odiff = rtmn_diff; 1184 ev_tstamp odiff = rtmn_diff;
1037 1185
1038 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1186 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1039 { 1187 {
1040 rtmn_diff = rt_now - mn_now; 1188 rtmn_diff = ev_rt_now - mn_now;
1041 1189
1042 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1190 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1043 return; /* all is well */ 1191 return; /* all is well */
1044 1192
1045 rt_now = ev_time (); 1193 ev_rt_now = ev_time ();
1046 mn_now = get_clock (); 1194 mn_now = get_clock ();
1047 now_floor = mn_now; 1195 now_floor = mn_now;
1048 } 1196 }
1049 1197
1198# if EV_PERIODICS
1050 periodics_reschedule (EV_A); 1199 periodics_reschedule (EV_A);
1200# endif
1051 /* no timer adjustment, as the monotonic clock doesn't jump */ 1201 /* no timer adjustment, as the monotonic clock doesn't jump */
1052 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1202 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1053 } 1203 }
1054 } 1204 }
1055 else 1205 else
1056#endif 1206#endif
1057 { 1207 {
1058 rt_now = ev_time (); 1208 ev_rt_now = ev_time ();
1059 1209
1060 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1210 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1061 { 1211 {
1212#if EV_PERIODICS
1062 periodics_reschedule (EV_A); 1213 periodics_reschedule (EV_A);
1214#endif
1063 1215
1064 /* adjust timers. this is easy, as the offset is the same for all */ 1216 /* adjust timers. this is easy, as the offset is the same for all */
1065 for (i = 0; i < timercnt; ++i) 1217 for (i = 0; i < timercnt; ++i)
1066 ((WT)timers [i])->at += rt_now - mn_now; 1218 ((WT)timers [i])->at += ev_rt_now - mn_now;
1067 } 1219 }
1068 1220
1069 mn_now = rt_now; 1221 mn_now = ev_rt_now;
1070 } 1222 }
1071} 1223}
1072 1224
1073void 1225void
1074ev_ref (EV_P) 1226ev_ref (EV_P)
1088ev_loop (EV_P_ int flags) 1240ev_loop (EV_P_ int flags)
1089{ 1241{
1090 double block; 1242 double block;
1091 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1243 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1092 1244
1093 do 1245 while (activecnt)
1094 { 1246 {
1095 /* queue check watchers (and execute them) */ 1247 /* queue check watchers (and execute them) */
1096 if (expect_false (preparecnt)) 1248 if (expect_false (preparecnt))
1097 { 1249 {
1098 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1114 if (expect_true (have_monotonic)) 1266 if (expect_true (have_monotonic))
1115 time_update_monotonic (EV_A); 1267 time_update_monotonic (EV_A);
1116 else 1268 else
1117#endif 1269#endif
1118 { 1270 {
1119 rt_now = ev_time (); 1271 ev_rt_now = ev_time ();
1120 mn_now = rt_now; 1272 mn_now = ev_rt_now;
1121 } 1273 }
1122 1274
1123 if (flags & EVLOOP_NONBLOCK || idlecnt) 1275 if (flags & EVLOOP_NONBLOCK || idlecnt)
1124 block = 0.; 1276 block = 0.;
1125 else 1277 else
1126 { 1278 {
1127 block = MAX_BLOCKTIME; 1279 block = MAX_BLOCKTIME;
1128 1280
1129 if (timercnt) 1281 if (timercnt)
1130 { 1282 {
1131 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1283 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1132 if (block > to) block = to; 1284 if (block > to) block = to;
1133 } 1285 }
1134 1286
1287#if EV_PERIODICS
1135 if (periodiccnt) 1288 if (periodiccnt)
1136 { 1289 {
1137 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1290 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1138 if (block > to) block = to; 1291 if (block > to) block = to;
1139 } 1292 }
1293#endif
1140 1294
1141 if (block < 0.) block = 0.; 1295 if (expect_false (block < 0.)) block = 0.;
1142 } 1296 }
1143 1297
1144 method_poll (EV_A_ block); 1298 backend_poll (EV_A_ block);
1145 1299
1146 /* update rt_now, do magic */ 1300 /* update ev_rt_now, do magic */
1147 time_update (EV_A); 1301 time_update (EV_A);
1148 1302
1149 /* queue pending timers and reschedule them */ 1303 /* queue pending timers and reschedule them */
1150 timers_reify (EV_A); /* relative timers called last */ 1304 timers_reify (EV_A); /* relative timers called last */
1305#if EV_PERIODICS
1151 periodics_reify (EV_A); /* absolute timers called first */ 1306 periodics_reify (EV_A); /* absolute timers called first */
1307#endif
1152 1308
1153 /* queue idle watchers unless io or timers are pending */ 1309 /* queue idle watchers unless io or timers are pending */
1154 if (idlecnt && !any_pending (EV_A)) 1310 if (idlecnt && !any_pending (EV_A))
1155 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1311 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1156 1312
1157 /* queue check watchers, to be executed first */ 1313 /* queue check watchers, to be executed first */
1158 if (checkcnt) 1314 if (expect_false (checkcnt))
1159 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1315 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1160 1316
1161 call_pending (EV_A); 1317 call_pending (EV_A);
1318
1319 if (expect_false (loop_done))
1320 break;
1162 } 1321 }
1163 while (activecnt && !loop_done);
1164 1322
1165 if (loop_done != 2) 1323 if (loop_done != 2)
1166 loop_done = 0; 1324 loop_done = 0;
1167} 1325}
1168 1326
1228void 1386void
1229ev_io_start (EV_P_ struct ev_io *w) 1387ev_io_start (EV_P_ struct ev_io *w)
1230{ 1388{
1231 int fd = w->fd; 1389 int fd = w->fd;
1232 1390
1233 if (ev_is_active (w)) 1391 if (expect_false (ev_is_active (w)))
1234 return; 1392 return;
1235 1393
1236 assert (("ev_io_start called with negative fd", fd >= 0)); 1394 assert (("ev_io_start called with negative fd", fd >= 0));
1237 1395
1238 ev_start (EV_A_ (W)w, 1); 1396 ev_start (EV_A_ (W)w, 1);
1244 1402
1245void 1403void
1246ev_io_stop (EV_P_ struct ev_io *w) 1404ev_io_stop (EV_P_ struct ev_io *w)
1247{ 1405{
1248 ev_clear_pending (EV_A_ (W)w); 1406 ev_clear_pending (EV_A_ (W)w);
1249 if (!ev_is_active (w)) 1407 if (expect_false (!ev_is_active (w)))
1250 return; 1408 return;
1409
1410 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1251 1411
1252 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1412 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1253 ev_stop (EV_A_ (W)w); 1413 ev_stop (EV_A_ (W)w);
1254 1414
1255 fd_change (EV_A_ w->fd); 1415 fd_change (EV_A_ w->fd);
1256} 1416}
1257 1417
1258void 1418void
1259ev_timer_start (EV_P_ struct ev_timer *w) 1419ev_timer_start (EV_P_ struct ev_timer *w)
1260{ 1420{
1261 if (ev_is_active (w)) 1421 if (expect_false (ev_is_active (w)))
1262 return; 1422 return;
1263 1423
1264 ((WT)w)->at += mn_now; 1424 ((WT)w)->at += mn_now;
1265 1425
1266 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1426 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1267 1427
1268 ev_start (EV_A_ (W)w, ++timercnt); 1428 ev_start (EV_A_ (W)w, ++timercnt);
1269 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1429 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1270 timers [timercnt - 1] = w; 1430 timers [timercnt - 1] = w;
1271 upheap ((WT *)timers, timercnt - 1); 1431 upheap ((WT *)timers, timercnt - 1);
1272 1432
1273 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1433 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1274} 1434}
1275 1435
1276void 1436void
1277ev_timer_stop (EV_P_ struct ev_timer *w) 1437ev_timer_stop (EV_P_ struct ev_timer *w)
1278{ 1438{
1279 ev_clear_pending (EV_A_ (W)w); 1439 ev_clear_pending (EV_A_ (W)w);
1280 if (!ev_is_active (w)) 1440 if (expect_false (!ev_is_active (w)))
1281 return; 1441 return;
1282 1442
1283 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1443 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1284 1444
1285 if (((W)w)->active < timercnt--) 1445 if (expect_true (((W)w)->active < timercnt--))
1286 { 1446 {
1287 timers [((W)w)->active - 1] = timers [timercnt]; 1447 timers [((W)w)->active - 1] = timers [timercnt];
1288 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1448 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1289 } 1449 }
1290 1450
1291 ((WT)w)->at = w->repeat; 1451 ((WT)w)->at -= mn_now;
1292 1452
1293 ev_stop (EV_A_ (W)w); 1453 ev_stop (EV_A_ (W)w);
1294} 1454}
1295 1455
1296void 1456void
1299 if (ev_is_active (w)) 1459 if (ev_is_active (w))
1300 { 1460 {
1301 if (w->repeat) 1461 if (w->repeat)
1302 { 1462 {
1303 ((WT)w)->at = mn_now + w->repeat; 1463 ((WT)w)->at = mn_now + w->repeat;
1304 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1464 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1305 } 1465 }
1306 else 1466 else
1307 ev_timer_stop (EV_A_ w); 1467 ev_timer_stop (EV_A_ w);
1308 } 1468 }
1309 else if (w->repeat) 1469 else if (w->repeat)
1470 {
1471 w->at = w->repeat;
1310 ev_timer_start (EV_A_ w); 1472 ev_timer_start (EV_A_ w);
1473 }
1311} 1474}
1312 1475
1476#if EV_PERIODICS
1313void 1477void
1314ev_periodic_start (EV_P_ struct ev_periodic *w) 1478ev_periodic_start (EV_P_ struct ev_periodic *w)
1315{ 1479{
1316 if (ev_is_active (w)) 1480 if (expect_false (ev_is_active (w)))
1317 return; 1481 return;
1318 1482
1319 if (w->reschedule_cb) 1483 if (w->reschedule_cb)
1320 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1484 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1321 else if (w->interval) 1485 else if (w->interval)
1322 { 1486 {
1323 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1487 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1324 /* this formula differs from the one in periodic_reify because we do not always round up */ 1488 /* this formula differs from the one in periodic_reify because we do not always round up */
1325 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1489 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1326 } 1490 }
1327 1491
1328 ev_start (EV_A_ (W)w, ++periodiccnt); 1492 ev_start (EV_A_ (W)w, ++periodiccnt);
1329 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1493 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1330 periodics [periodiccnt - 1] = w; 1494 periodics [periodiccnt - 1] = w;
1331 upheap ((WT *)periodics, periodiccnt - 1); 1495 upheap ((WT *)periodics, periodiccnt - 1);
1332 1496
1333 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1497 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1334} 1498}
1335 1499
1336void 1500void
1337ev_periodic_stop (EV_P_ struct ev_periodic *w) 1501ev_periodic_stop (EV_P_ struct ev_periodic *w)
1338{ 1502{
1339 ev_clear_pending (EV_A_ (W)w); 1503 ev_clear_pending (EV_A_ (W)w);
1340 if (!ev_is_active (w)) 1504 if (expect_false (!ev_is_active (w)))
1341 return; 1505 return;
1342 1506
1343 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1507 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1344 1508
1345 if (((W)w)->active < periodiccnt--) 1509 if (expect_true (((W)w)->active < periodiccnt--))
1346 { 1510 {
1347 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1511 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1348 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1512 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1349 } 1513 }
1350 1514
1351 ev_stop (EV_A_ (W)w); 1515 ev_stop (EV_A_ (W)w);
1352} 1516}
1353 1517
1354void 1518void
1355ev_periodic_again (EV_P_ struct ev_periodic *w) 1519ev_periodic_again (EV_P_ struct ev_periodic *w)
1356{ 1520{
1521 /* TODO: use adjustheap and recalculation */
1357 ev_periodic_stop (EV_A_ w); 1522 ev_periodic_stop (EV_A_ w);
1358 ev_periodic_start (EV_A_ w); 1523 ev_periodic_start (EV_A_ w);
1359} 1524}
1525#endif
1360 1526
1361void 1527void
1362ev_idle_start (EV_P_ struct ev_idle *w) 1528ev_idle_start (EV_P_ struct ev_idle *w)
1363{ 1529{
1364 if (ev_is_active (w)) 1530 if (expect_false (ev_is_active (w)))
1365 return; 1531 return;
1366 1532
1367 ev_start (EV_A_ (W)w, ++idlecnt); 1533 ev_start (EV_A_ (W)w, ++idlecnt);
1368 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); 1534 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1369 idles [idlecnt - 1] = w; 1535 idles [idlecnt - 1] = w;
1370} 1536}
1371 1537
1372void 1538void
1373ev_idle_stop (EV_P_ struct ev_idle *w) 1539ev_idle_stop (EV_P_ struct ev_idle *w)
1374{ 1540{
1375 ev_clear_pending (EV_A_ (W)w); 1541 ev_clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 1542 if (expect_false (!ev_is_active (w)))
1377 return; 1543 return;
1378 1544
1379 idles [((W)w)->active - 1] = idles [--idlecnt]; 1545 idles [((W)w)->active - 1] = idles [--idlecnt];
1380 ev_stop (EV_A_ (W)w); 1546 ev_stop (EV_A_ (W)w);
1381} 1547}
1382 1548
1383void 1549void
1384ev_prepare_start (EV_P_ struct ev_prepare *w) 1550ev_prepare_start (EV_P_ struct ev_prepare *w)
1385{ 1551{
1386 if (ev_is_active (w)) 1552 if (expect_false (ev_is_active (w)))
1387 return; 1553 return;
1388 1554
1389 ev_start (EV_A_ (W)w, ++preparecnt); 1555 ev_start (EV_A_ (W)w, ++preparecnt);
1390 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); 1556 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1391 prepares [preparecnt - 1] = w; 1557 prepares [preparecnt - 1] = w;
1392} 1558}
1393 1559
1394void 1560void
1395ev_prepare_stop (EV_P_ struct ev_prepare *w) 1561ev_prepare_stop (EV_P_ struct ev_prepare *w)
1396{ 1562{
1397 ev_clear_pending (EV_A_ (W)w); 1563 ev_clear_pending (EV_A_ (W)w);
1398 if (ev_is_active (w)) 1564 if (expect_false (!ev_is_active (w)))
1399 return; 1565 return;
1400 1566
1401 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1567 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1402 ev_stop (EV_A_ (W)w); 1568 ev_stop (EV_A_ (W)w);
1403} 1569}
1404 1570
1405void 1571void
1406ev_check_start (EV_P_ struct ev_check *w) 1572ev_check_start (EV_P_ struct ev_check *w)
1407{ 1573{
1408 if (ev_is_active (w)) 1574 if (expect_false (ev_is_active (w)))
1409 return; 1575 return;
1410 1576
1411 ev_start (EV_A_ (W)w, ++checkcnt); 1577 ev_start (EV_A_ (W)w, ++checkcnt);
1412 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); 1578 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1413 checks [checkcnt - 1] = w; 1579 checks [checkcnt - 1] = w;
1414} 1580}
1415 1581
1416void 1582void
1417ev_check_stop (EV_P_ struct ev_check *w) 1583ev_check_stop (EV_P_ struct ev_check *w)
1418{ 1584{
1419 ev_clear_pending (EV_A_ (W)w); 1585 ev_clear_pending (EV_A_ (W)w);
1420 if (ev_is_active (w)) 1586 if (expect_false (!ev_is_active (w)))
1421 return; 1587 return;
1422 1588
1423 checks [((W)w)->active - 1] = checks [--checkcnt]; 1589 checks [((W)w)->active - 1] = checks [--checkcnt];
1424 ev_stop (EV_A_ (W)w); 1590 ev_stop (EV_A_ (W)w);
1425} 1591}
1430 1596
1431void 1597void
1432ev_signal_start (EV_P_ struct ev_signal *w) 1598ev_signal_start (EV_P_ struct ev_signal *w)
1433{ 1599{
1434#if EV_MULTIPLICITY 1600#if EV_MULTIPLICITY
1435 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1601 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1436#endif 1602#endif
1437 if (ev_is_active (w)) 1603 if (expect_false (ev_is_active (w)))
1438 return; 1604 return;
1439 1605
1440 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1606 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1441 1607
1442 ev_start (EV_A_ (W)w, 1); 1608 ev_start (EV_A_ (W)w, 1);
1443 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1609 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1444 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1610 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1445 1611
1446 if (!((WL)w)->next) 1612 if (!((WL)w)->next)
1447 { 1613 {
1448#if WIN32 1614#if _WIN32
1449 signal (w->signum, sighandler); 1615 signal (w->signum, sighandler);
1450#else 1616#else
1451 struct sigaction sa; 1617 struct sigaction sa;
1452 sa.sa_handler = sighandler; 1618 sa.sa_handler = sighandler;
1453 sigfillset (&sa.sa_mask); 1619 sigfillset (&sa.sa_mask);
1459 1625
1460void 1626void
1461ev_signal_stop (EV_P_ struct ev_signal *w) 1627ev_signal_stop (EV_P_ struct ev_signal *w)
1462{ 1628{
1463 ev_clear_pending (EV_A_ (W)w); 1629 ev_clear_pending (EV_A_ (W)w);
1464 if (!ev_is_active (w)) 1630 if (expect_false (!ev_is_active (w)))
1465 return; 1631 return;
1466 1632
1467 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1633 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1468 ev_stop (EV_A_ (W)w); 1634 ev_stop (EV_A_ (W)w);
1469 1635
1473 1639
1474void 1640void
1475ev_child_start (EV_P_ struct ev_child *w) 1641ev_child_start (EV_P_ struct ev_child *w)
1476{ 1642{
1477#if EV_MULTIPLICITY 1643#if EV_MULTIPLICITY
1478 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1644 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1479#endif 1645#endif
1480 if (ev_is_active (w)) 1646 if (expect_false (ev_is_active (w)))
1481 return; 1647 return;
1482 1648
1483 ev_start (EV_A_ (W)w, 1); 1649 ev_start (EV_A_ (W)w, 1);
1484 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1650 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1485} 1651}
1486 1652
1487void 1653void
1488ev_child_stop (EV_P_ struct ev_child *w) 1654ev_child_stop (EV_P_ struct ev_child *w)
1489{ 1655{
1490 ev_clear_pending (EV_A_ (W)w); 1656 ev_clear_pending (EV_A_ (W)w);
1491 if (ev_is_active (w)) 1657 if (expect_false (!ev_is_active (w)))
1492 return; 1658 return;
1493 1659
1494 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1660 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1495 ev_stop (EV_A_ (W)w); 1661 ev_stop (EV_A_ (W)w);
1496} 1662}
1533void 1699void
1534ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1700ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1535{ 1701{
1536 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1702 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1537 1703
1538 if (!once) 1704 if (expect_false (!once))
1705 {
1539 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1706 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1540 else 1707 return;
1541 { 1708 }
1709
1542 once->cb = cb; 1710 once->cb = cb;
1543 once->arg = arg; 1711 once->arg = arg;
1544 1712
1545 ev_watcher_init (&once->io, once_cb_io); 1713 ev_init (&once->io, once_cb_io);
1546 if (fd >= 0) 1714 if (fd >= 0)
1547 { 1715 {
1548 ev_io_set (&once->io, fd, events); 1716 ev_io_set (&once->io, fd, events);
1549 ev_io_start (EV_A_ &once->io); 1717 ev_io_start (EV_A_ &once->io);
1550 } 1718 }
1551 1719
1552 ev_watcher_init (&once->to, once_cb_to); 1720 ev_init (&once->to, once_cb_to);
1553 if (timeout >= 0.) 1721 if (timeout >= 0.)
1554 { 1722 {
1555 ev_timer_set (&once->to, timeout, 0.); 1723 ev_timer_set (&once->to, timeout, 0.);
1556 ev_timer_start (EV_A_ &once->to); 1724 ev_timer_start (EV_A_ &once->to);
1557 }
1558 } 1725 }
1559} 1726}
1560 1727
1728#ifdef __cplusplus
1729}
1730#endif
1731

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