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Comparing libev/ev.c (file contents):
Revision 1.119 by root, Fri Nov 16 01:43:52 2007 UTC vs.
Revision 1.195 by root, Sat Dec 22 11:44:51 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_NANOSLEEP
60# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
58# endif 81# endif
59 82
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 83# ifndef EV_USE_EPOLL
84# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61# define EV_USE_KQUEUE 1 85# define EV_USE_EPOLL 1
86# else
87# define EV_USE_EPOLL 0
88# endif
62# endif 89# endif
63 90
64# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 91# ifndef EV_USE_KQUEUE
92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
93# define EV_USE_KQUEUE 1
94# else
95# define EV_USE_KQUEUE 0
96# endif
97# endif
98
99# ifndef EV_USE_PORT
100# if HAVE_PORT_H && HAVE_PORT_CREATE
65# define EV_USE_PORT 1 101# define EV_USE_PORT 1
102# else
103# define EV_USE_PORT 0
104# endif
105# endif
106
107# ifndef EV_USE_INOTIFY
108# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
109# define EV_USE_INOTIFY 1
110# else
111# define EV_USE_INOTIFY 0
112# endif
66# endif 113# endif
67 114
68#endif 115#endif
69 116
70#include <math.h> 117#include <math.h>
… …
79#include <sys/types.h> 126#include <sys/types.h>
80#include <time.h> 127#include <time.h>
81 128
82#include <signal.h> 129#include <signal.h>
83 130
131#ifdef EV_H
132# include EV_H
133#else
134# include "ev.h"
135#endif
136
84#ifndef _WIN32 137#ifndef _WIN32
85# include <unistd.h>
86# include <sys/time.h> 138# include <sys/time.h>
87# include <sys/wait.h> 139# include <sys/wait.h>
140# include <unistd.h>
88#else 141#else
89# define WIN32_LEAN_AND_MEAN 142# define WIN32_LEAN_AND_MEAN
90# include <windows.h> 143# include <windows.h>
91# ifndef EV_SELECT_IS_WINSOCKET 144# ifndef EV_SELECT_IS_WINSOCKET
92# define EV_SELECT_IS_WINSOCKET 1 145# define EV_SELECT_IS_WINSOCKET 1
… …
94#endif 147#endif
95 148
96/**/ 149/**/
97 150
98#ifndef EV_USE_MONOTONIC 151#ifndef EV_USE_MONOTONIC
99# define EV_USE_MONOTONIC 1 152# define EV_USE_MONOTONIC 0
100#endif 153#endif
101 154
102#ifndef EV_USE_REALTIME 155#ifndef EV_USE_REALTIME
103# define EV_USE_REALTIME 1 156# define EV_USE_REALTIME 0
157#endif
158
159#ifndef EV_USE_NANOSLEEP
160# define EV_USE_NANOSLEEP 0
104#endif 161#endif
105 162
106#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
107# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
108# define EV_SELECT_USE_FD_SET 1
109#endif 165#endif
110 166
111#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
112# ifdef _WIN32 168# ifdef _WIN32
113# define EV_USE_POLL 0 169# define EV_USE_POLL 0
… …
126 182
127#ifndef EV_USE_PORT 183#ifndef EV_USE_PORT
128# define EV_USE_PORT 0 184# define EV_USE_PORT 0
129#endif 185#endif
130 186
187#ifndef EV_USE_INOTIFY
188# define EV_USE_INOTIFY 0
189#endif
190
191#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL
193# define EV_PID_HASHSIZE 1
194# else
195# define EV_PID_HASHSIZE 16
196# endif
197#endif
198
199#ifndef EV_INOTIFY_HASHSIZE
200# if EV_MINIMAL
201# define EV_INOTIFY_HASHSIZE 1
202# else
203# define EV_INOTIFY_HASHSIZE 16
204# endif
205#endif
206
131/**/ 207/**/
132
133/* darwin simply cannot be helped */
134#ifdef __APPLE__
135# undef EV_USE_POLL
136# undef EV_USE_KQUEUE
137#endif
138 208
139#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
140# undef EV_USE_MONOTONIC 210# undef EV_USE_MONOTONIC
141# define EV_USE_MONOTONIC 0 211# define EV_USE_MONOTONIC 0
142#endif 212#endif
… …
144#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
145# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
146# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
147#endif 217#endif
148 218
219#if !EV_STAT_ENABLE
220# undef EV_USE_INOTIFY
221# define EV_USE_INOTIFY 0
222#endif
223
224#if !EV_USE_NANOSLEEP
225# ifndef _WIN32
226# include <sys/select.h>
227# endif
228#endif
229
230#if EV_USE_INOTIFY
231# include <sys/inotify.h>
232#endif
233
149#if EV_SELECT_IS_WINSOCKET 234#if EV_SELECT_IS_WINSOCKET
150# include <winsock.h> 235# include <winsock.h>
151#endif 236#endif
152 237
153/**/ 238/**/
154 239
240/*
241 * This is used to avoid floating point rounding problems.
242 * It is added to ev_rt_now when scheduling periodics
243 * to ensure progress, time-wise, even when rounding
244 * errors are against us.
245 * This value is good at least till the year 4000.
246 * Better solutions welcome.
247 */
248#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
249
155#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
156#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
157#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
158/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
159 253
160#ifdef EV_H
161# include EV_H
162#else
163# include "ev.h"
164#endif
165
166#if __GNUC__ >= 3 254#if __GNUC__ >= 4
167# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
168# define inline inline 256# define noinline __attribute__ ((noinline))
169#else 257#else
170# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
171# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
172#endif 263#endif
173 264
174#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
175#define expect_true(expr) expect ((expr) != 0, 1) 266#define expect_true(expr) expect ((expr) != 0, 1)
267#define inline_size static inline
268
269#if EV_MINIMAL
270# define inline_speed static noinline
271#else
272# define inline_speed static inline
273#endif
176 274
177#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
178#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
179 277
180#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 278#define EMPTY /* required for microsofts broken pseudo-c compiler */
181#define EMPTY2(a,b) /* used to suppress some warnings */ 279#define EMPTY2(a,b) /* used to suppress some warnings */
182 280
183typedef struct ev_watcher *W; 281typedef ev_watcher *W;
184typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
185typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
186 284
285/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */
187static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
188 288
189#ifdef _WIN32 289#ifdef _WIN32
190# include "ev_win32.c" 290# include "ev_win32.c"
191#endif 291#endif
192 292
193/*****************************************************************************/ 293/*****************************************************************************/
194 294
195static void (*syserr_cb)(const char *msg); 295static void (*syserr_cb)(const char *msg);
196 296
297void
197void ev_set_syserr_cb (void (*cb)(const char *msg)) 298ev_set_syserr_cb (void (*cb)(const char *msg))
198{ 299{
199 syserr_cb = cb; 300 syserr_cb = cb;
200} 301}
201 302
202static void 303static void noinline
203syserr (const char *msg) 304syserr (const char *msg)
204{ 305{
205 if (!msg) 306 if (!msg)
206 msg = "(libev) system error"; 307 msg = "(libev) system error";
207 308
… …
214 } 315 }
215} 316}
216 317
217static void *(*alloc)(void *ptr, long size); 318static void *(*alloc)(void *ptr, long size);
218 319
320void
219void ev_set_allocator (void *(*cb)(void *ptr, long size)) 321ev_set_allocator (void *(*cb)(void *ptr, long size))
220{ 322{
221 alloc = cb; 323 alloc = cb;
222} 324}
223 325
224static void * 326inline_speed void *
225ev_realloc (void *ptr, long size) 327ev_realloc (void *ptr, long size)
226{ 328{
227 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 329 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
228 330
229 if (!ptr && size) 331 if (!ptr && size)
… …
253typedef struct 355typedef struct
254{ 356{
255 W w; 357 W w;
256 int events; 358 int events;
257} ANPENDING; 359} ANPENDING;
360
361#if EV_USE_INOTIFY
362typedef struct
363{
364 WL head;
365} ANFS;
366#endif
258 367
259#if EV_MULTIPLICITY 368#if EV_MULTIPLICITY
260 369
261 struct ev_loop 370 struct ev_loop
262 { 371 {
… …
296 gettimeofday (&tv, 0); 405 gettimeofday (&tv, 0);
297 return tv.tv_sec + tv.tv_usec * 1e-6; 406 return tv.tv_sec + tv.tv_usec * 1e-6;
298#endif 407#endif
299} 408}
300 409
301inline ev_tstamp 410ev_tstamp inline_size
302get_clock (void) 411get_clock (void)
303{ 412{
304#if EV_USE_MONOTONIC 413#if EV_USE_MONOTONIC
305 if (expect_true (have_monotonic)) 414 if (expect_true (have_monotonic))
306 { 415 {
… …
319{ 428{
320 return ev_rt_now; 429 return ev_rt_now;
321} 430}
322#endif 431#endif
323 432
324#define array_roundsize(type,n) (((n) | 4) & ~3) 433void
434ev_sleep (ev_tstamp delay)
435{
436 if (delay > 0.)
437 {
438#if EV_USE_NANOSLEEP
439 struct timespec ts;
440
441 ts.tv_sec = (time_t)delay;
442 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443
444 nanosleep (&ts, 0);
445#elif defined(_WIN32)
446 Sleep (delay * 1e3);
447#else
448 struct timeval tv;
449
450 tv.tv_sec = (time_t)delay;
451 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452
453 select (0, 0, 0, 0, &tv);
454#endif
455 }
456}
457
458/*****************************************************************************/
459
460int inline_size
461array_nextsize (int elem, int cur, int cnt)
462{
463 int ncur = cur + 1;
464
465 do
466 ncur <<= 1;
467 while (cnt > ncur);
468
469 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
470 if (elem * ncur > 4096)
471 {
472 ncur *= elem;
473 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
474 ncur = ncur - sizeof (void *) * 4;
475 ncur /= elem;
476 }
477
478 return ncur;
479}
480
481static noinline void *
482array_realloc (int elem, void *base, int *cur, int cnt)
483{
484 *cur = array_nextsize (elem, *cur, cnt);
485 return ev_realloc (base, elem * *cur);
486}
325 487
326#define array_needsize(type,base,cur,cnt,init) \ 488#define array_needsize(type,base,cur,cnt,init) \
327 if (expect_false ((cnt) > cur)) \ 489 if (expect_false ((cnt) > (cur))) \
328 { \ 490 { \
329 int newcnt = cur; \ 491 int ocur_ = (cur); \
330 do \ 492 (base) = (type *)array_realloc \
331 { \ 493 (sizeof (type), (base), &(cur), (cnt)); \
332 newcnt = array_roundsize (type, newcnt << 1); \ 494 init ((base) + (ocur_), (cur) - ocur_); \
333 } \
334 while ((cnt) > newcnt); \
335 \
336 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
337 init (base + cur, newcnt - cur); \
338 cur = newcnt; \
339 } 495 }
340 496
497#if 0
341#define array_slim(type,stem) \ 498#define array_slim(type,stem) \
342 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 499 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
343 { \ 500 { \
344 stem ## max = array_roundsize (stem ## cnt >> 1); \ 501 stem ## max = array_roundsize (stem ## cnt >> 1); \
345 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 502 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
346 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 503 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
347 } 504 }
505#endif
348 506
349#define array_free(stem, idx) \ 507#define array_free(stem, idx) \
350 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 508 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
351 509
352/*****************************************************************************/ 510/*****************************************************************************/
353 511
354static void 512void noinline
513ev_feed_event (EV_P_ void *w, int revents)
514{
515 W w_ = (W)w;
516 int pri = ABSPRI (w_);
517
518 if (expect_false (w_->pending))
519 pendings [pri][w_->pending - 1].events |= revents;
520 else
521 {
522 w_->pending = ++pendingcnt [pri];
523 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
524 pendings [pri][w_->pending - 1].w = w_;
525 pendings [pri][w_->pending - 1].events = revents;
526 }
527}
528
529void inline_speed
530queue_events (EV_P_ W *events, int eventcnt, int type)
531{
532 int i;
533
534 for (i = 0; i < eventcnt; ++i)
535 ev_feed_event (EV_A_ events [i], type);
536}
537
538/*****************************************************************************/
539
540void inline_size
355anfds_init (ANFD *base, int count) 541anfds_init (ANFD *base, int count)
356{ 542{
357 while (count--) 543 while (count--)
358 { 544 {
359 base->head = 0; 545 base->head = 0;
… …
362 548
363 ++base; 549 ++base;
364 } 550 }
365} 551}
366 552
367void 553void inline_speed
368ev_feed_event (EV_P_ void *w, int revents)
369{
370 W w_ = (W)w;
371
372 if (w_->pending)
373 {
374 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
375 return;
376 }
377
378 w_->pending = ++pendingcnt [ABSPRI (w_)];
379 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
380 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
381 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
382}
383
384static void
385queue_events (EV_P_ W *events, int eventcnt, int type)
386{
387 int i;
388
389 for (i = 0; i < eventcnt; ++i)
390 ev_feed_event (EV_A_ events [i], type);
391}
392
393inline void
394fd_event (EV_P_ int fd, int revents) 554fd_event (EV_P_ int fd, int revents)
395{ 555{
396 ANFD *anfd = anfds + fd; 556 ANFD *anfd = anfds + fd;
397 struct ev_io *w; 557 ev_io *w;
398 558
399 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 559 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
400 { 560 {
401 int ev = w->events & revents; 561 int ev = w->events & revents;
402 562
403 if (ev) 563 if (ev)
404 ev_feed_event (EV_A_ (W)w, ev); 564 ev_feed_event (EV_A_ (W)w, ev);
… …
406} 566}
407 567
408void 568void
409ev_feed_fd_event (EV_P_ int fd, int revents) 569ev_feed_fd_event (EV_P_ int fd, int revents)
410{ 570{
571 if (fd >= 0 && fd < anfdmax)
411 fd_event (EV_A_ fd, revents); 572 fd_event (EV_A_ fd, revents);
412} 573}
413 574
414/*****************************************************************************/ 575void inline_size
415
416static void
417fd_reify (EV_P) 576fd_reify (EV_P)
418{ 577{
419 int i; 578 int i;
420 579
421 for (i = 0; i < fdchangecnt; ++i) 580 for (i = 0; i < fdchangecnt; ++i)
422 { 581 {
423 int fd = fdchanges [i]; 582 int fd = fdchanges [i];
424 ANFD *anfd = anfds + fd; 583 ANFD *anfd = anfds + fd;
425 struct ev_io *w; 584 ev_io *w;
426 585
427 int events = 0; 586 unsigned char events = 0;
428 587
429 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 588 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
430 events |= w->events; 589 events |= (unsigned char)w->events;
431 590
432#if EV_SELECT_IS_WINSOCKET 591#if EV_SELECT_IS_WINSOCKET
433 if (events) 592 if (events)
434 { 593 {
435 unsigned long argp; 594 unsigned long argp;
436 anfd->handle = _get_osfhandle (fd); 595 anfd->handle = _get_osfhandle (fd);
437 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
438 } 597 }
439#endif 598#endif
440 599
600 {
601 unsigned char o_events = anfd->events;
602 unsigned char o_reify = anfd->reify;
603
441 anfd->reify = 0; 604 anfd->reify = 0;
442
443 method_modify (EV_A_ fd, anfd->events, events);
444 anfd->events = events; 605 anfd->events = events;
606
607 if (o_events != events || o_reify & EV_IOFDSET)
608 backend_modify (EV_A_ fd, o_events, events);
609 }
445 } 610 }
446 611
447 fdchangecnt = 0; 612 fdchangecnt = 0;
448} 613}
449 614
450static void 615void inline_size
451fd_change (EV_P_ int fd) 616fd_change (EV_P_ int fd, int flags)
452{ 617{
453 if (anfds [fd].reify) 618 unsigned char reify = anfds [fd].reify;
454 return;
455
456 anfds [fd].reify = 1; 619 anfds [fd].reify |= flags;
457 620
621 if (expect_true (!reify))
622 {
458 ++fdchangecnt; 623 ++fdchangecnt;
459 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 624 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
460 fdchanges [fdchangecnt - 1] = fd; 625 fdchanges [fdchangecnt - 1] = fd;
626 }
461} 627}
462 628
463static void 629void inline_speed
464fd_kill (EV_P_ int fd) 630fd_kill (EV_P_ int fd)
465{ 631{
466 struct ev_io *w; 632 ev_io *w;
467 633
468 while ((w = (struct ev_io *)anfds [fd].head)) 634 while ((w = (ev_io *)anfds [fd].head))
469 { 635 {
470 ev_io_stop (EV_A_ w); 636 ev_io_stop (EV_A_ w);
471 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 637 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
472 } 638 }
473} 639}
474 640
475static int 641int inline_size
476fd_valid (int fd) 642fd_valid (int fd)
477{ 643{
478#ifdef _WIN32 644#ifdef _WIN32
479 return _get_osfhandle (fd) != -1; 645 return _get_osfhandle (fd) != -1;
480#else 646#else
481 return fcntl (fd, F_GETFD) != -1; 647 return fcntl (fd, F_GETFD) != -1;
482#endif 648#endif
483} 649}
484 650
485/* called on EBADF to verify fds */ 651/* called on EBADF to verify fds */
486static void 652static void noinline
487fd_ebadf (EV_P) 653fd_ebadf (EV_P)
488{ 654{
489 int fd; 655 int fd;
490 656
491 for (fd = 0; fd < anfdmax; ++fd) 657 for (fd = 0; fd < anfdmax; ++fd)
… …
493 if (!fd_valid (fd) == -1 && errno == EBADF) 659 if (!fd_valid (fd) == -1 && errno == EBADF)
494 fd_kill (EV_A_ fd); 660 fd_kill (EV_A_ fd);
495} 661}
496 662
497/* called on ENOMEM in select/poll to kill some fds and retry */ 663/* called on ENOMEM in select/poll to kill some fds and retry */
498static void 664static void noinline
499fd_enomem (EV_P) 665fd_enomem (EV_P)
500{ 666{
501 int fd; 667 int fd;
502 668
503 for (fd = anfdmax; fd--; ) 669 for (fd = anfdmax; fd--; )
… …
506 fd_kill (EV_A_ fd); 672 fd_kill (EV_A_ fd);
507 return; 673 return;
508 } 674 }
509} 675}
510 676
511/* usually called after fork if method needs to re-arm all fds from scratch */ 677/* usually called after fork if backend needs to re-arm all fds from scratch */
512static void 678static void noinline
513fd_rearm_all (EV_P) 679fd_rearm_all (EV_P)
514{ 680{
515 int fd; 681 int fd;
516 682
517 /* this should be highly optimised to not do anything but set a flag */
518 for (fd = 0; fd < anfdmax; ++fd) 683 for (fd = 0; fd < anfdmax; ++fd)
519 if (anfds [fd].events) 684 if (anfds [fd].events)
520 { 685 {
521 anfds [fd].events = 0; 686 anfds [fd].events = 0;
522 fd_change (EV_A_ fd); 687 fd_change (EV_A_ fd, EV_IOFDSET | 1);
523 } 688 }
524} 689}
525 690
526/*****************************************************************************/ 691/*****************************************************************************/
527 692
528static void 693void inline_speed
529upheap (WT *heap, int k) 694upheap (WT *heap, int k)
530{ 695{
531 WT w = heap [k]; 696 WT w = heap [k];
532 697
533 while (k && heap [k >> 1]->at > w->at) 698 while (k)
534 { 699 {
700 int p = (k - 1) >> 1;
701
702 if (heap [p]->at <= w->at)
703 break;
704
535 heap [k] = heap [k >> 1]; 705 heap [k] = heap [p];
536 ((W)heap [k])->active = k + 1; 706 ((W)heap [k])->active = k + 1;
537 k >>= 1; 707 k = p;
538 } 708 }
539 709
540 heap [k] = w; 710 heap [k] = w;
541 ((W)heap [k])->active = k + 1; 711 ((W)heap [k])->active = k + 1;
542
543} 712}
544 713
545static void 714void inline_speed
546downheap (WT *heap, int N, int k) 715downheap (WT *heap, int N, int k)
547{ 716{
548 WT w = heap [k]; 717 WT w = heap [k];
549 718
550 while (k < (N >> 1)) 719 for (;;)
551 { 720 {
552 int j = k << 1; 721 int c = (k << 1) + 1;
553 722
554 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 723 if (c >= N)
555 ++j;
556
557 if (w->at <= heap [j]->at)
558 break; 724 break;
559 725
726 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
727 ? 1 : 0;
728
729 if (w->at <= heap [c]->at)
730 break;
731
560 heap [k] = heap [j]; 732 heap [k] = heap [c];
561 ((W)heap [k])->active = k + 1; 733 ((W)heap [k])->active = k + 1;
734
562 k = j; 735 k = c;
563 } 736 }
564 737
565 heap [k] = w; 738 heap [k] = w;
566 ((W)heap [k])->active = k + 1; 739 ((W)heap [k])->active = k + 1;
567} 740}
568 741
569inline void 742void inline_size
570adjustheap (WT *heap, int N, int k) 743adjustheap (WT *heap, int N, int k)
571{ 744{
572 upheap (heap, k); 745 upheap (heap, k);
573 downheap (heap, N, k); 746 downheap (heap, N, k);
574} 747}
… …
584static ANSIG *signals; 757static ANSIG *signals;
585static int signalmax; 758static int signalmax;
586 759
587static int sigpipe [2]; 760static int sigpipe [2];
588static sig_atomic_t volatile gotsig; 761static sig_atomic_t volatile gotsig;
589static struct ev_io sigev; 762static ev_io sigev;
590 763
591static void 764void inline_size
592signals_init (ANSIG *base, int count) 765signals_init (ANSIG *base, int count)
593{ 766{
594 while (count--) 767 while (count--)
595 { 768 {
596 base->head = 0; 769 base->head = 0;
… …
616 write (sigpipe [1], &signum, 1); 789 write (sigpipe [1], &signum, 1);
617 errno = old_errno; 790 errno = old_errno;
618 } 791 }
619} 792}
620 793
621void 794void noinline
622ev_feed_signal_event (EV_P_ int signum) 795ev_feed_signal_event (EV_P_ int signum)
623{ 796{
624 WL w; 797 WL w;
625 798
626#if EV_MULTIPLICITY 799#if EV_MULTIPLICITY
… …
637 for (w = signals [signum].head; w; w = w->next) 810 for (w = signals [signum].head; w; w = w->next)
638 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 811 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
639} 812}
640 813
641static void 814static void
642sigcb (EV_P_ struct ev_io *iow, int revents) 815sigcb (EV_P_ ev_io *iow, int revents)
643{ 816{
644 int signum; 817 int signum;
645 818
646 read (sigpipe [0], &revents, 1); 819 read (sigpipe [0], &revents, 1);
647 gotsig = 0; 820 gotsig = 0;
… …
649 for (signum = signalmax; signum--; ) 822 for (signum = signalmax; signum--; )
650 if (signals [signum].gotsig) 823 if (signals [signum].gotsig)
651 ev_feed_signal_event (EV_A_ signum + 1); 824 ev_feed_signal_event (EV_A_ signum + 1);
652} 825}
653 826
654inline void 827void inline_speed
655fd_intern (int fd) 828fd_intern (int fd)
656{ 829{
657#ifdef _WIN32 830#ifdef _WIN32
658 int arg = 1; 831 int arg = 1;
659 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
661 fcntl (fd, F_SETFD, FD_CLOEXEC); 834 fcntl (fd, F_SETFD, FD_CLOEXEC);
662 fcntl (fd, F_SETFL, O_NONBLOCK); 835 fcntl (fd, F_SETFL, O_NONBLOCK);
663#endif 836#endif
664} 837}
665 838
666static void 839static void noinline
667siginit (EV_P) 840siginit (EV_P)
668{ 841{
669 fd_intern (sigpipe [0]); 842 fd_intern (sigpipe [0]);
670 fd_intern (sigpipe [1]); 843 fd_intern (sigpipe [1]);
671 844
… …
674 ev_unref (EV_A); /* child watcher should not keep loop alive */ 847 ev_unref (EV_A); /* child watcher should not keep loop alive */
675} 848}
676 849
677/*****************************************************************************/ 850/*****************************************************************************/
678 851
679static struct ev_child *childs [PID_HASHSIZE]; 852static WL childs [EV_PID_HASHSIZE];
680 853
681#ifndef _WIN32 854#ifndef _WIN32
682 855
683static struct ev_signal childev; 856static ev_signal childev;
857
858void inline_speed
859child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
860{
861 ev_child *w;
862
863 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
864 if (w->pid == pid || !w->pid)
865 {
866 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
867 w->rpid = pid;
868 w->rstatus = status;
869 ev_feed_event (EV_A_ (W)w, EV_CHILD);
870 }
871}
684 872
685#ifndef WCONTINUED 873#ifndef WCONTINUED
686# define WCONTINUED 0 874# define WCONTINUED 0
687#endif 875#endif
688 876
689static void 877static void
690child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
691{
692 struct ev_child *w;
693
694 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
695 if (w->pid == pid || !w->pid)
696 {
697 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
698 w->rpid = pid;
699 w->rstatus = status;
700 ev_feed_event (EV_A_ (W)w, EV_CHILD);
701 }
702}
703
704static void
705childcb (EV_P_ struct ev_signal *sw, int revents) 878childcb (EV_P_ ev_signal *sw, int revents)
706{ 879{
707 int pid, status; 880 int pid, status;
708 881
882 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
709 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 883 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
710 { 884 if (!WCONTINUED
885 || errno != EINVAL
886 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887 return;
888
711 /* make sure we are called again until all childs have been reaped */ 889 /* make sure we are called again until all childs have been reaped */
890 /* we need to do it this way so that the callback gets called before we continue */
712 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 891 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
713 892
714 child_reap (EV_A_ sw, pid, pid, status); 893 child_reap (EV_A_ sw, pid, pid, status);
894 if (EV_PID_HASHSIZE > 1)
715 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 895 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
716 }
717} 896}
718 897
719#endif 898#endif
720 899
721/*****************************************************************************/ 900/*****************************************************************************/
… …
747{ 926{
748 return EV_VERSION_MINOR; 927 return EV_VERSION_MINOR;
749} 928}
750 929
751/* return true if we are running with elevated privileges and should ignore env variables */ 930/* return true if we are running with elevated privileges and should ignore env variables */
752static int 931int inline_size
753enable_secure (void) 932enable_secure (void)
754{ 933{
755#ifdef _WIN32 934#ifdef _WIN32
756 return 0; 935 return 0;
757#else 936#else
… …
759 || getgid () != getegid (); 938 || getgid () != getegid ();
760#endif 939#endif
761} 940}
762 941
763unsigned int 942unsigned int
764ev_method (EV_P) 943ev_supported_backends (void)
765{ 944{
766 return method; 945 unsigned int flags = 0;
767}
768 946
769static void 947 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
948 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
949 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
950 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
951 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
952
953 return flags;
954}
955
956unsigned int
957ev_recommended_backends (void)
958{
959 unsigned int flags = ev_supported_backends ();
960
961#ifndef __NetBSD__
962 /* kqueue is borked on everything but netbsd apparently */
963 /* it usually doesn't work correctly on anything but sockets and pipes */
964 flags &= ~EVBACKEND_KQUEUE;
965#endif
966#ifdef __APPLE__
967 // flags &= ~EVBACKEND_KQUEUE; for documentation
968 flags &= ~EVBACKEND_POLL;
969#endif
970
971 return flags;
972}
973
974unsigned int
975ev_embeddable_backends (void)
976{
977 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
978 return EVBACKEND_KQUEUE
979 | EVBACKEND_PORT;
980}
981
982unsigned int
983ev_backend (EV_P)
984{
985 return backend;
986}
987
988unsigned int
989ev_loop_count (EV_P)
990{
991 return loop_count;
992}
993
994void
995ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
996{
997 io_blocktime = interval;
998}
999
1000void
1001ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 timeout_blocktime = interval;
1004}
1005
1006static void noinline
770loop_init (EV_P_ unsigned int flags) 1007loop_init (EV_P_ unsigned int flags)
771{ 1008{
772 if (!method) 1009 if (!backend)
773 { 1010 {
774#if EV_USE_MONOTONIC 1011#if EV_USE_MONOTONIC
775 { 1012 {
776 struct timespec ts; 1013 struct timespec ts;
777 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1014 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
782 ev_rt_now = ev_time (); 1019 ev_rt_now = ev_time ();
783 mn_now = get_clock (); 1020 mn_now = get_clock ();
784 now_floor = mn_now; 1021 now_floor = mn_now;
785 rtmn_diff = ev_rt_now - mn_now; 1022 rtmn_diff = ev_rt_now - mn_now;
786 1023
787 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1024 io_blocktime = 0.;
1025 timeout_blocktime = 0.;
1026
1027 /* pid check not overridable via env */
1028#ifndef _WIN32
1029 if (flags & EVFLAG_FORKCHECK)
1030 curpid = getpid ();
1031#endif
1032
1033 if (!(flags & EVFLAG_NOENV)
1034 && !enable_secure ()
1035 && getenv ("LIBEV_FLAGS"))
788 flags = atoi (getenv ("LIBEV_FLAGS")); 1036 flags = atoi (getenv ("LIBEV_FLAGS"));
789 1037
790 if (!(flags & 0x0000ffff)) 1038 if (!(flags & 0x0000ffffUL))
791 flags |= 0x0000ffff; 1039 flags |= ev_recommended_backends ();
792 1040
793 method = 0; 1041 backend = 0;
1042 backend_fd = -1;
1043#if EV_USE_INOTIFY
1044 fs_fd = -2;
1045#endif
1046
794#if EV_USE_PORT 1047#if EV_USE_PORT
795 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1048 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
796#endif 1049#endif
797#if EV_USE_KQUEUE 1050#if EV_USE_KQUEUE
798 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1051 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
799#endif 1052#endif
800#if EV_USE_EPOLL 1053#if EV_USE_EPOLL
801 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1054 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
802#endif 1055#endif
803#if EV_USE_POLL 1056#if EV_USE_POLL
804 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1057 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
805#endif 1058#endif
806#if EV_USE_SELECT 1059#if EV_USE_SELECT
807 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1060 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
808#endif 1061#endif
809 1062
810 ev_init (&sigev, sigcb); 1063 ev_init (&sigev, sigcb);
811 ev_set_priority (&sigev, EV_MAXPRI); 1064 ev_set_priority (&sigev, EV_MAXPRI);
812 } 1065 }
813} 1066}
814 1067
815void 1068static void noinline
816loop_destroy (EV_P) 1069loop_destroy (EV_P)
817{ 1070{
818 int i; 1071 int i;
819 1072
1073#if EV_USE_INOTIFY
1074 if (fs_fd >= 0)
1075 close (fs_fd);
1076#endif
1077
1078 if (backend_fd >= 0)
1079 close (backend_fd);
1080
820#if EV_USE_PORT 1081#if EV_USE_PORT
821 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1082 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
822#endif 1083#endif
823#if EV_USE_KQUEUE 1084#if EV_USE_KQUEUE
824 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1085 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
825#endif 1086#endif
826#if EV_USE_EPOLL 1087#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1088 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
828#endif 1089#endif
829#if EV_USE_POLL 1090#if EV_USE_POLL
830 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1091 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
831#endif 1092#endif
832#if EV_USE_SELECT 1093#if EV_USE_SELECT
833 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1094 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
834#endif 1095#endif
835 1096
836 for (i = NUMPRI; i--; ) 1097 for (i = NUMPRI; i--; )
1098 {
837 array_free (pending, [i]); 1099 array_free (pending, [i]);
1100#if EV_IDLE_ENABLE
1101 array_free (idle, [i]);
1102#endif
1103 }
1104
1105 ev_free (anfds); anfdmax = 0;
838 1106
839 /* have to use the microsoft-never-gets-it-right macro */ 1107 /* have to use the microsoft-never-gets-it-right macro */
840 array_free (fdchange, EMPTY0); 1108 array_free (fdchange, EMPTY);
841 array_free (timer, EMPTY0); 1109 array_free (timer, EMPTY);
842#if EV_PERIODICS 1110#if EV_PERIODIC_ENABLE
843 array_free (periodic, EMPTY0); 1111 array_free (periodic, EMPTY);
844#endif 1112#endif
1113#if EV_FORK_ENABLE
845 array_free (idle, EMPTY0); 1114 array_free (fork, EMPTY);
1115#endif
846 array_free (prepare, EMPTY0); 1116 array_free (prepare, EMPTY);
847 array_free (check, EMPTY0); 1117 array_free (check, EMPTY);
848 1118
849 method = 0; 1119 backend = 0;
850} 1120}
851 1121
852static void 1122void inline_size infy_fork (EV_P);
1123
1124void inline_size
853loop_fork (EV_P) 1125loop_fork (EV_P)
854{ 1126{
855#if EV_USE_PORT 1127#if EV_USE_PORT
856 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1128 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
857#endif 1129#endif
858#if EV_USE_KQUEUE 1130#if EV_USE_KQUEUE
859 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1131 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
860#endif 1132#endif
861#if EV_USE_EPOLL 1133#if EV_USE_EPOLL
862 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1134 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1135#endif
1136#if EV_USE_INOTIFY
1137 infy_fork (EV_A);
863#endif 1138#endif
864 1139
865 if (ev_is_active (&sigev)) 1140 if (ev_is_active (&sigev))
866 { 1141 {
867 /* default loop */ 1142 /* default loop */
… …
888 1163
889 memset (loop, 0, sizeof (struct ev_loop)); 1164 memset (loop, 0, sizeof (struct ev_loop));
890 1165
891 loop_init (EV_A_ flags); 1166 loop_init (EV_A_ flags);
892 1167
893 if (ev_method (EV_A)) 1168 if (ev_backend (EV_A))
894 return loop; 1169 return loop;
895 1170
896 return 0; 1171 return 0;
897} 1172}
898 1173
… …
911 1186
912#endif 1187#endif
913 1188
914#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
915struct ev_loop * 1190struct ev_loop *
916ev_default_loop_ (unsigned int flags) 1191ev_default_loop_init (unsigned int flags)
917#else 1192#else
918int 1193int
919ev_default_loop (unsigned int flags) 1194ev_default_loop (unsigned int flags)
920#endif 1195#endif
921{ 1196{
… …
931 ev_default_loop_ptr = 1; 1206 ev_default_loop_ptr = 1;
932#endif 1207#endif
933 1208
934 loop_init (EV_A_ flags); 1209 loop_init (EV_A_ flags);
935 1210
936 if (ev_method (EV_A)) 1211 if (ev_backend (EV_A))
937 { 1212 {
938 siginit (EV_A); 1213 siginit (EV_A);
939 1214
940#ifndef _WIN32 1215#ifndef _WIN32
941 ev_signal_init (&childev, childcb, SIGCHLD); 1216 ev_signal_init (&childev, childcb, SIGCHLD);
… …
977{ 1252{
978#if EV_MULTIPLICITY 1253#if EV_MULTIPLICITY
979 struct ev_loop *loop = ev_default_loop_ptr; 1254 struct ev_loop *loop = ev_default_loop_ptr;
980#endif 1255#endif
981 1256
982 if (method) 1257 if (backend)
983 postfork = 1; 1258 postfork = 1;
984} 1259}
985 1260
986/*****************************************************************************/ 1261/*****************************************************************************/
987 1262
988static int 1263void
989any_pending (EV_P) 1264ev_invoke (EV_P_ void *w, int revents)
990{ 1265{
991 int pri; 1266 EV_CB_INVOKE ((W)w, revents);
992
993 for (pri = NUMPRI; pri--; )
994 if (pendingcnt [pri])
995 return 1;
996
997 return 0;
998} 1267}
999 1268
1000static void 1269void inline_speed
1001call_pending (EV_P) 1270call_pending (EV_P)
1002{ 1271{
1003 int pri; 1272 int pri;
1004 1273
1005 for (pri = NUMPRI; pri--; ) 1274 for (pri = NUMPRI; pri--; )
1006 while (pendingcnt [pri]) 1275 while (pendingcnt [pri])
1007 { 1276 {
1008 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1277 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1009 1278
1010 if (p->w) 1279 if (expect_true (p->w))
1011 { 1280 {
1281 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1282
1012 p->w->pending = 0; 1283 p->w->pending = 0;
1013 EV_CB_INVOKE (p->w, p->events); 1284 EV_CB_INVOKE (p->w, p->events);
1014 } 1285 }
1015 } 1286 }
1016} 1287}
1017 1288
1018static void 1289void inline_size
1019timers_reify (EV_P) 1290timers_reify (EV_P)
1020{ 1291{
1021 while (timercnt && ((WT)timers [0])->at <= mn_now) 1292 while (timercnt && ((WT)timers [0])->at <= mn_now)
1022 { 1293 {
1023 struct ev_timer *w = timers [0]; 1294 ev_timer *w = (ev_timer *)timers [0];
1024 1295
1025 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1296 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1026 1297
1027 /* first reschedule or stop timer */ 1298 /* first reschedule or stop timer */
1028 if (w->repeat) 1299 if (w->repeat)
1029 { 1300 {
1030 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1301 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1031 1302
1032 ((WT)w)->at += w->repeat; 1303 ((WT)w)->at += w->repeat;
1033 if (((WT)w)->at < mn_now) 1304 if (((WT)w)->at < mn_now)
1034 ((WT)w)->at = mn_now; 1305 ((WT)w)->at = mn_now;
1035 1306
1036 downheap ((WT *)timers, timercnt, 0); 1307 downheap (timers, timercnt, 0);
1037 } 1308 }
1038 else 1309 else
1039 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1310 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1040 1311
1041 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1312 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1042 } 1313 }
1043} 1314}
1044 1315
1045#if EV_PERIODICS 1316#if EV_PERIODIC_ENABLE
1046static void 1317void inline_size
1047periodics_reify (EV_P) 1318periodics_reify (EV_P)
1048{ 1319{
1049 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1320 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1050 { 1321 {
1051 struct ev_periodic *w = periodics [0]; 1322 ev_periodic *w = (ev_periodic *)periodics [0];
1052 1323
1053 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1324 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1054 1325
1055 /* first reschedule or stop timer */ 1326 /* first reschedule or stop timer */
1056 if (w->reschedule_cb) 1327 if (w->reschedule_cb)
1057 { 1328 {
1058 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1329 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1059 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1330 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1060 downheap ((WT *)periodics, periodiccnt, 0); 1331 downheap (periodics, periodiccnt, 0);
1061 } 1332 }
1062 else if (w->interval) 1333 else if (w->interval)
1063 { 1334 {
1064 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1335 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1336 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1065 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1337 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1066 downheap ((WT *)periodics, periodiccnt, 0); 1338 downheap (periodics, periodiccnt, 0);
1067 } 1339 }
1068 else 1340 else
1069 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1341 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1070 1342
1071 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1343 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1072 } 1344 }
1073} 1345}
1074 1346
1075static void 1347static void noinline
1076periodics_reschedule (EV_P) 1348periodics_reschedule (EV_P)
1077{ 1349{
1078 int i; 1350 int i;
1079 1351
1080 /* adjust periodics after time jump */ 1352 /* adjust periodics after time jump */
1081 for (i = 0; i < periodiccnt; ++i) 1353 for (i = 0; i < periodiccnt; ++i)
1082 { 1354 {
1083 struct ev_periodic *w = periodics [i]; 1355 ev_periodic *w = (ev_periodic *)periodics [i];
1084 1356
1085 if (w->reschedule_cb) 1357 if (w->reschedule_cb)
1086 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1358 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1087 else if (w->interval) 1359 else if (w->interval)
1088 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1360 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1089 } 1361 }
1090 1362
1091 /* now rebuild the heap */ 1363 /* now rebuild the heap */
1092 for (i = periodiccnt >> 1; i--; ) 1364 for (i = periodiccnt >> 1; i--; )
1093 downheap ((WT *)periodics, periodiccnt, i); 1365 downheap (periodics, periodiccnt, i);
1094} 1366}
1095#endif 1367#endif
1096 1368
1097inline int 1369#if EV_IDLE_ENABLE
1098time_update_monotonic (EV_P) 1370void inline_size
1371idle_reify (EV_P)
1099{ 1372{
1373 if (expect_false (idleall))
1374 {
1375 int pri;
1376
1377 for (pri = NUMPRI; pri--; )
1378 {
1379 if (pendingcnt [pri])
1380 break;
1381
1382 if (idlecnt [pri])
1383 {
1384 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1385 break;
1386 }
1387 }
1388 }
1389}
1390#endif
1391
1392void inline_speed
1393time_update (EV_P_ ev_tstamp max_block)
1394{
1395 int i;
1396
1397#if EV_USE_MONOTONIC
1398 if (expect_true (have_monotonic))
1399 {
1400 ev_tstamp odiff = rtmn_diff;
1401
1100 mn_now = get_clock (); 1402 mn_now = get_clock ();
1101 1403
1404 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1405 /* interpolate in the meantime */
1102 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1406 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1103 { 1407 {
1104 ev_rt_now = rtmn_diff + mn_now; 1408 ev_rt_now = rtmn_diff + mn_now;
1105 return 0; 1409 return;
1106 } 1410 }
1107 else 1411
1108 {
1109 now_floor = mn_now; 1412 now_floor = mn_now;
1110 ev_rt_now = ev_time (); 1413 ev_rt_now = ev_time ();
1111 return 1;
1112 }
1113}
1114 1414
1115static void 1415 /* loop a few times, before making important decisions.
1116time_update (EV_P) 1416 * on the choice of "4": one iteration isn't enough,
1117{ 1417 * in case we get preempted during the calls to
1118 int i; 1418 * ev_time and get_clock. a second call is almost guaranteed
1119 1419 * to succeed in that case, though. and looping a few more times
1120#if EV_USE_MONOTONIC 1420 * doesn't hurt either as we only do this on time-jumps or
1121 if (expect_true (have_monotonic)) 1421 * in the unlikely event of having been preempted here.
1122 { 1422 */
1123 if (time_update_monotonic (EV_A)) 1423 for (i = 4; --i; )
1124 { 1424 {
1125 ev_tstamp odiff = rtmn_diff;
1126
1127 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1128 {
1129 rtmn_diff = ev_rt_now - mn_now; 1425 rtmn_diff = ev_rt_now - mn_now;
1130 1426
1131 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1427 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1132 return; /* all is well */ 1428 return; /* all is well */
1133 1429
1134 ev_rt_now = ev_time (); 1430 ev_rt_now = ev_time ();
1135 mn_now = get_clock (); 1431 mn_now = get_clock ();
1136 now_floor = mn_now; 1432 now_floor = mn_now;
1137 } 1433 }
1138 1434
1139# if EV_PERIODICS 1435# if EV_PERIODIC_ENABLE
1436 periodics_reschedule (EV_A);
1437# endif
1438 /* no timer adjustment, as the monotonic clock doesn't jump */
1439 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1440 }
1441 else
1442#endif
1443 {
1444 ev_rt_now = ev_time ();
1445
1446 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1447 {
1448#if EV_PERIODIC_ENABLE
1140 periodics_reschedule (EV_A); 1449 periodics_reschedule (EV_A);
1141# endif 1450#endif
1142 /* no timer adjustment, as the monotonic clock doesn't jump */
1143 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1144 }
1145 }
1146 else
1147#endif
1148 {
1149 ev_rt_now = ev_time ();
1150
1151 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1152 {
1153#if EV_PERIODICS
1154 periodics_reschedule (EV_A);
1155#endif
1156
1157 /* adjust timers. this is easy, as the offset is the same for all */ 1451 /* adjust timers. this is easy, as the offset is the same for all of them */
1158 for (i = 0; i < timercnt; ++i) 1452 for (i = 0; i < timercnt; ++i)
1159 ((WT)timers [i])->at += ev_rt_now - mn_now; 1453 ((WT)timers [i])->at += ev_rt_now - mn_now;
1160 } 1454 }
1161 1455
1162 mn_now = ev_rt_now; 1456 mn_now = ev_rt_now;
… …
1178static int loop_done; 1472static int loop_done;
1179 1473
1180void 1474void
1181ev_loop (EV_P_ int flags) 1475ev_loop (EV_P_ int flags)
1182{ 1476{
1183 double block;
1184 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1477 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1478 ? EVUNLOOP_ONE
1479 : EVUNLOOP_CANCEL;
1185 1480
1186 while (activecnt) 1481 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1482
1483 do
1187 { 1484 {
1485#ifndef _WIN32
1486 if (expect_false (curpid)) /* penalise the forking check even more */
1487 if (expect_false (getpid () != curpid))
1488 {
1489 curpid = getpid ();
1490 postfork = 1;
1491 }
1492#endif
1493
1494#if EV_FORK_ENABLE
1495 /* we might have forked, so queue fork handlers */
1496 if (expect_false (postfork))
1497 if (forkcnt)
1498 {
1499 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1500 call_pending (EV_A);
1501 }
1502#endif
1503
1188 /* queue check watchers (and execute them) */ 1504 /* queue prepare watchers (and execute them) */
1189 if (expect_false (preparecnt)) 1505 if (expect_false (preparecnt))
1190 { 1506 {
1191 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1507 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1192 call_pending (EV_A); 1508 call_pending (EV_A);
1193 } 1509 }
1194 1510
1511 if (expect_false (!activecnt))
1512 break;
1513
1195 /* we might have forked, so reify kernel state if necessary */ 1514 /* we might have forked, so reify kernel state if necessary */
1196 if (expect_false (postfork)) 1515 if (expect_false (postfork))
1197 loop_fork (EV_A); 1516 loop_fork (EV_A);
1198 1517
1199 /* update fd-related kernel structures */ 1518 /* update fd-related kernel structures */
1200 fd_reify (EV_A); 1519 fd_reify (EV_A);
1201 1520
1202 /* calculate blocking time */ 1521 /* calculate blocking time */
1522 {
1523 ev_tstamp waittime = 0.;
1524 ev_tstamp sleeptime = 0.;
1203 1525
1204 /* we only need this for !monotonic clock or timers, but as we basically 1526 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1205 always have timers, we just calculate it always */
1206#if EV_USE_MONOTONIC
1207 if (expect_true (have_monotonic))
1208 time_update_monotonic (EV_A);
1209 else
1210#endif
1211 { 1527 {
1212 ev_rt_now = ev_time (); 1528 /* update time to cancel out callback processing overhead */
1213 mn_now = ev_rt_now; 1529 time_update (EV_A_ 1e100);
1214 }
1215 1530
1216 if (flags & EVLOOP_NONBLOCK || idlecnt)
1217 block = 0.;
1218 else
1219 {
1220 block = MAX_BLOCKTIME; 1531 waittime = MAX_BLOCKTIME;
1221 1532
1222 if (timercnt) 1533 if (timercnt)
1223 { 1534 {
1224 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1535 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1225 if (block > to) block = to; 1536 if (waittime > to) waittime = to;
1226 } 1537 }
1227 1538
1228#if EV_PERIODICS 1539#if EV_PERIODIC_ENABLE
1229 if (periodiccnt) 1540 if (periodiccnt)
1230 { 1541 {
1231 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1542 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1232 if (block > to) block = to; 1543 if (waittime > to) waittime = to;
1233 } 1544 }
1234#endif 1545#endif
1235 1546
1236 if (block < 0.) block = 0.; 1547 if (expect_false (waittime < timeout_blocktime))
1548 waittime = timeout_blocktime;
1549
1550 sleeptime = waittime - backend_fudge;
1551
1552 if (expect_true (sleeptime > io_blocktime))
1553 sleeptime = io_blocktime;
1554
1555 if (sleeptime)
1556 {
1557 ev_sleep (sleeptime);
1558 waittime -= sleeptime;
1559 }
1237 } 1560 }
1238 1561
1239 method_poll (EV_A_ block); 1562 ++loop_count;
1563 backend_poll (EV_A_ waittime);
1240 1564
1241 /* update ev_rt_now, do magic */ 1565 /* update ev_rt_now, do magic */
1242 time_update (EV_A); 1566 time_update (EV_A_ waittime + sleeptime);
1567 }
1243 1568
1244 /* queue pending timers and reschedule them */ 1569 /* queue pending timers and reschedule them */
1245 timers_reify (EV_A); /* relative timers called last */ 1570 timers_reify (EV_A); /* relative timers called last */
1246#if EV_PERIODICS 1571#if EV_PERIODIC_ENABLE
1247 periodics_reify (EV_A); /* absolute timers called first */ 1572 periodics_reify (EV_A); /* absolute timers called first */
1248#endif 1573#endif
1249 1574
1575#if EV_IDLE_ENABLE
1250 /* queue idle watchers unless io or timers are pending */ 1576 /* queue idle watchers unless other events are pending */
1251 if (idlecnt && !any_pending (EV_A)) 1577 idle_reify (EV_A);
1252 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1578#endif
1253 1579
1254 /* queue check watchers, to be executed first */ 1580 /* queue check watchers, to be executed first */
1255 if (checkcnt) 1581 if (expect_false (checkcnt))
1256 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1582 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1257 1583
1258 call_pending (EV_A); 1584 call_pending (EV_A);
1259 1585
1260 if (loop_done)
1261 break;
1262 } 1586 }
1587 while (expect_true (activecnt && !loop_done));
1263 1588
1264 if (loop_done != 2) 1589 if (loop_done == EVUNLOOP_ONE)
1265 loop_done = 0; 1590 loop_done = EVUNLOOP_CANCEL;
1266} 1591}
1267 1592
1268void 1593void
1269ev_unloop (EV_P_ int how) 1594ev_unloop (EV_P_ int how)
1270{ 1595{
1271 loop_done = how; 1596 loop_done = how;
1272} 1597}
1273 1598
1274/*****************************************************************************/ 1599/*****************************************************************************/
1275 1600
1276inline void 1601void inline_size
1277wlist_add (WL *head, WL elem) 1602wlist_add (WL *head, WL elem)
1278{ 1603{
1279 elem->next = *head; 1604 elem->next = *head;
1280 *head = elem; 1605 *head = elem;
1281} 1606}
1282 1607
1283inline void 1608void inline_size
1284wlist_del (WL *head, WL elem) 1609wlist_del (WL *head, WL elem)
1285{ 1610{
1286 while (*head) 1611 while (*head)
1287 { 1612 {
1288 if (*head == elem) 1613 if (*head == elem)
… …
1293 1618
1294 head = &(*head)->next; 1619 head = &(*head)->next;
1295 } 1620 }
1296} 1621}
1297 1622
1298inline void 1623void inline_speed
1299ev_clear_pending (EV_P_ W w) 1624clear_pending (EV_P_ W w)
1300{ 1625{
1301 if (w->pending) 1626 if (w->pending)
1302 { 1627 {
1303 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1628 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1304 w->pending = 0; 1629 w->pending = 0;
1305 } 1630 }
1306} 1631}
1307 1632
1308inline void 1633int
1634ev_clear_pending (EV_P_ void *w)
1635{
1636 W w_ = (W)w;
1637 int pending = w_->pending;
1638
1639 if (expect_true (pending))
1640 {
1641 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1642 w_->pending = 0;
1643 p->w = 0;
1644 return p->events;
1645 }
1646 else
1647 return 0;
1648}
1649
1650void inline_size
1651pri_adjust (EV_P_ W w)
1652{
1653 int pri = w->priority;
1654 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1655 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1656 w->priority = pri;
1657}
1658
1659void inline_speed
1309ev_start (EV_P_ W w, int active) 1660ev_start (EV_P_ W w, int active)
1310{ 1661{
1311 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1662 pri_adjust (EV_A_ w);
1312 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1313
1314 w->active = active; 1663 w->active = active;
1315 ev_ref (EV_A); 1664 ev_ref (EV_A);
1316} 1665}
1317 1666
1318inline void 1667void inline_size
1319ev_stop (EV_P_ W w) 1668ev_stop (EV_P_ W w)
1320{ 1669{
1321 ev_unref (EV_A); 1670 ev_unref (EV_A);
1322 w->active = 0; 1671 w->active = 0;
1323} 1672}
1324 1673
1325/*****************************************************************************/ 1674/*****************************************************************************/
1326 1675
1327void 1676void noinline
1328ev_io_start (EV_P_ struct ev_io *w) 1677ev_io_start (EV_P_ ev_io *w)
1329{ 1678{
1330 int fd = w->fd; 1679 int fd = w->fd;
1331 1680
1332 if (ev_is_active (w)) 1681 if (expect_false (ev_is_active (w)))
1333 return; 1682 return;
1334 1683
1335 assert (("ev_io_start called with negative fd", fd >= 0)); 1684 assert (("ev_io_start called with negative fd", fd >= 0));
1336 1685
1337 ev_start (EV_A_ (W)w, 1); 1686 ev_start (EV_A_ (W)w, 1);
1338 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1687 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1339 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1688 wlist_add (&anfds[fd].head, (WL)w);
1340 1689
1341 fd_change (EV_A_ fd); 1690 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1691 w->events &= ~EV_IOFDSET;
1342} 1692}
1343 1693
1344void 1694void noinline
1345ev_io_stop (EV_P_ struct ev_io *w) 1695ev_io_stop (EV_P_ ev_io *w)
1346{ 1696{
1347 ev_clear_pending (EV_A_ (W)w); 1697 clear_pending (EV_A_ (W)w);
1348 if (!ev_is_active (w)) 1698 if (expect_false (!ev_is_active (w)))
1349 return; 1699 return;
1350 1700
1351 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1701 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1352 1702
1353 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1703 wlist_del (&anfds[w->fd].head, (WL)w);
1354 ev_stop (EV_A_ (W)w); 1704 ev_stop (EV_A_ (W)w);
1355 1705
1356 fd_change (EV_A_ w->fd); 1706 fd_change (EV_A_ w->fd, 1);
1357} 1707}
1358 1708
1359void 1709void noinline
1360ev_timer_start (EV_P_ struct ev_timer *w) 1710ev_timer_start (EV_P_ ev_timer *w)
1361{ 1711{
1362 if (ev_is_active (w)) 1712 if (expect_false (ev_is_active (w)))
1363 return; 1713 return;
1364 1714
1365 ((WT)w)->at += mn_now; 1715 ((WT)w)->at += mn_now;
1366 1716
1367 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1717 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1368 1718
1369 ev_start (EV_A_ (W)w, ++timercnt); 1719 ev_start (EV_A_ (W)w, ++timercnt);
1370 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1720 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1371 timers [timercnt - 1] = w; 1721 timers [timercnt - 1] = (WT)w;
1372 upheap ((WT *)timers, timercnt - 1); 1722 upheap (timers, timercnt - 1);
1373 1723
1374 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1724 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1375} 1725}
1376 1726
1377void 1727void noinline
1378ev_timer_stop (EV_P_ struct ev_timer *w) 1728ev_timer_stop (EV_P_ ev_timer *w)
1379{ 1729{
1380 ev_clear_pending (EV_A_ (W)w); 1730 clear_pending (EV_A_ (W)w);
1381 if (!ev_is_active (w)) 1731 if (expect_false (!ev_is_active (w)))
1382 return; 1732 return;
1383 1733
1384 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1734 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1385 1735
1386 if (((W)w)->active < timercnt--) 1736 {
1737 int active = ((W)w)->active;
1738
1739 if (expect_true (--active < --timercnt))
1387 { 1740 {
1388 timers [((W)w)->active - 1] = timers [timercnt]; 1741 timers [active] = timers [timercnt];
1389 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1742 adjustheap (timers, timercnt, active);
1390 } 1743 }
1744 }
1391 1745
1392 ((WT)w)->at -= mn_now; 1746 ((WT)w)->at -= mn_now;
1393 1747
1394 ev_stop (EV_A_ (W)w); 1748 ev_stop (EV_A_ (W)w);
1395} 1749}
1396 1750
1397void 1751void noinline
1398ev_timer_again (EV_P_ struct ev_timer *w) 1752ev_timer_again (EV_P_ ev_timer *w)
1399{ 1753{
1400 if (ev_is_active (w)) 1754 if (ev_is_active (w))
1401 { 1755 {
1402 if (w->repeat) 1756 if (w->repeat)
1403 { 1757 {
1404 ((WT)w)->at = mn_now + w->repeat; 1758 ((WT)w)->at = mn_now + w->repeat;
1405 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1759 adjustheap (timers, timercnt, ((W)w)->active - 1);
1406 } 1760 }
1407 else 1761 else
1408 ev_timer_stop (EV_A_ w); 1762 ev_timer_stop (EV_A_ w);
1409 } 1763 }
1410 else if (w->repeat) 1764 else if (w->repeat)
… …
1412 w->at = w->repeat; 1766 w->at = w->repeat;
1413 ev_timer_start (EV_A_ w); 1767 ev_timer_start (EV_A_ w);
1414 } 1768 }
1415} 1769}
1416 1770
1417#if EV_PERIODICS 1771#if EV_PERIODIC_ENABLE
1418void 1772void noinline
1419ev_periodic_start (EV_P_ struct ev_periodic *w) 1773ev_periodic_start (EV_P_ ev_periodic *w)
1420{ 1774{
1421 if (ev_is_active (w)) 1775 if (expect_false (ev_is_active (w)))
1422 return; 1776 return;
1423 1777
1424 if (w->reschedule_cb) 1778 if (w->reschedule_cb)
1425 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1779 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1426 else if (w->interval) 1780 else if (w->interval)
1427 { 1781 {
1428 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1782 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1429 /* this formula differs from the one in periodic_reify because we do not always round up */ 1783 /* this formula differs from the one in periodic_reify because we do not always round up */
1430 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1784 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431 } 1785 }
1786 else
1787 ((WT)w)->at = w->offset;
1432 1788
1433 ev_start (EV_A_ (W)w, ++periodiccnt); 1789 ev_start (EV_A_ (W)w, ++periodiccnt);
1434 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1790 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1435 periodics [periodiccnt - 1] = w; 1791 periodics [periodiccnt - 1] = (WT)w;
1436 upheap ((WT *)periodics, periodiccnt - 1); 1792 upheap (periodics, periodiccnt - 1);
1437 1793
1438 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1794 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1439} 1795}
1440 1796
1441void 1797void noinline
1442ev_periodic_stop (EV_P_ struct ev_periodic *w) 1798ev_periodic_stop (EV_P_ ev_periodic *w)
1443{ 1799{
1444 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1445 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
1446 return; 1802 return;
1447 1803
1448 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1804 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1449 1805
1450 if (((W)w)->active < periodiccnt--) 1806 {
1807 int active = ((W)w)->active;
1808
1809 if (expect_true (--active < --periodiccnt))
1451 { 1810 {
1452 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1811 periodics [active] = periodics [periodiccnt];
1453 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1812 adjustheap (periodics, periodiccnt, active);
1454 } 1813 }
1814 }
1455 1815
1456 ev_stop (EV_A_ (W)w); 1816 ev_stop (EV_A_ (W)w);
1457} 1817}
1458 1818
1459void 1819void noinline
1460ev_periodic_again (EV_P_ struct ev_periodic *w) 1820ev_periodic_again (EV_P_ ev_periodic *w)
1461{ 1821{
1462 /* TODO: use adjustheap and recalculation */ 1822 /* TODO: use adjustheap and recalculation */
1463 ev_periodic_stop (EV_A_ w); 1823 ev_periodic_stop (EV_A_ w);
1464 ev_periodic_start (EV_A_ w); 1824 ev_periodic_start (EV_A_ w);
1465} 1825}
1466#endif 1826#endif
1467 1827
1468void
1469ev_idle_start (EV_P_ struct ev_idle *w)
1470{
1471 if (ev_is_active (w))
1472 return;
1473
1474 ev_start (EV_A_ (W)w, ++idlecnt);
1475 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1476 idles [idlecnt - 1] = w;
1477}
1478
1479void
1480ev_idle_stop (EV_P_ struct ev_idle *w)
1481{
1482 ev_clear_pending (EV_A_ (W)w);
1483 if (!ev_is_active (w))
1484 return;
1485
1486 idles [((W)w)->active - 1] = idles [--idlecnt];
1487 ev_stop (EV_A_ (W)w);
1488}
1489
1490void
1491ev_prepare_start (EV_P_ struct ev_prepare *w)
1492{
1493 if (ev_is_active (w))
1494 return;
1495
1496 ev_start (EV_A_ (W)w, ++preparecnt);
1497 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1498 prepares [preparecnt - 1] = w;
1499}
1500
1501void
1502ev_prepare_stop (EV_P_ struct ev_prepare *w)
1503{
1504 ev_clear_pending (EV_A_ (W)w);
1505 if (!ev_is_active (w))
1506 return;
1507
1508 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1509 ev_stop (EV_A_ (W)w);
1510}
1511
1512void
1513ev_check_start (EV_P_ struct ev_check *w)
1514{
1515 if (ev_is_active (w))
1516 return;
1517
1518 ev_start (EV_A_ (W)w, ++checkcnt);
1519 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1520 checks [checkcnt - 1] = w;
1521}
1522
1523void
1524ev_check_stop (EV_P_ struct ev_check *w)
1525{
1526 ev_clear_pending (EV_A_ (W)w);
1527 if (!ev_is_active (w))
1528 return;
1529
1530 checks [((W)w)->active - 1] = checks [--checkcnt];
1531 ev_stop (EV_A_ (W)w);
1532}
1533
1534#ifndef SA_RESTART 1828#ifndef SA_RESTART
1535# define SA_RESTART 0 1829# define SA_RESTART 0
1536#endif 1830#endif
1537 1831
1538void 1832void noinline
1539ev_signal_start (EV_P_ struct ev_signal *w) 1833ev_signal_start (EV_P_ ev_signal *w)
1540{ 1834{
1541#if EV_MULTIPLICITY 1835#if EV_MULTIPLICITY
1542 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1836 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1543#endif 1837#endif
1544 if (ev_is_active (w)) 1838 if (expect_false (ev_is_active (w)))
1545 return; 1839 return;
1546 1840
1547 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1841 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1548 1842
1843 {
1844#ifndef _WIN32
1845 sigset_t full, prev;
1846 sigfillset (&full);
1847 sigprocmask (SIG_SETMASK, &full, &prev);
1848#endif
1849
1850 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1851
1852#ifndef _WIN32
1853 sigprocmask (SIG_SETMASK, &prev, 0);
1854#endif
1855 }
1856
1549 ev_start (EV_A_ (W)w, 1); 1857 ev_start (EV_A_ (W)w, 1);
1550 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1551 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1858 wlist_add (&signals [w->signum - 1].head, (WL)w);
1552 1859
1553 if (!((WL)w)->next) 1860 if (!((WL)w)->next)
1554 { 1861 {
1555#if _WIN32 1862#if _WIN32
1556 signal (w->signum, sighandler); 1863 signal (w->signum, sighandler);
… …
1562 sigaction (w->signum, &sa, 0); 1869 sigaction (w->signum, &sa, 0);
1563#endif 1870#endif
1564 } 1871 }
1565} 1872}
1566 1873
1567void 1874void noinline
1568ev_signal_stop (EV_P_ struct ev_signal *w) 1875ev_signal_stop (EV_P_ ev_signal *w)
1569{ 1876{
1570 ev_clear_pending (EV_A_ (W)w); 1877 clear_pending (EV_A_ (W)w);
1571 if (!ev_is_active (w)) 1878 if (expect_false (!ev_is_active (w)))
1572 return; 1879 return;
1573 1880
1574 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1881 wlist_del (&signals [w->signum - 1].head, (WL)w);
1575 ev_stop (EV_A_ (W)w); 1882 ev_stop (EV_A_ (W)w);
1576 1883
1577 if (!signals [w->signum - 1].head) 1884 if (!signals [w->signum - 1].head)
1578 signal (w->signum, SIG_DFL); 1885 signal (w->signum, SIG_DFL);
1579} 1886}
1580 1887
1581void 1888void
1582ev_child_start (EV_P_ struct ev_child *w) 1889ev_child_start (EV_P_ ev_child *w)
1583{ 1890{
1584#if EV_MULTIPLICITY 1891#if EV_MULTIPLICITY
1585 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1892 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1586#endif 1893#endif
1587 if (ev_is_active (w)) 1894 if (expect_false (ev_is_active (w)))
1588 return; 1895 return;
1589 1896
1590 ev_start (EV_A_ (W)w, 1); 1897 ev_start (EV_A_ (W)w, 1);
1591 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1898 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1592} 1899}
1593 1900
1594void 1901void
1595ev_child_stop (EV_P_ struct ev_child *w) 1902ev_child_stop (EV_P_ ev_child *w)
1596{ 1903{
1597 ev_clear_pending (EV_A_ (W)w); 1904 clear_pending (EV_A_ (W)w);
1598 if (!ev_is_active (w)) 1905 if (expect_false (!ev_is_active (w)))
1599 return; 1906 return;
1600 1907
1601 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1908 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1602 ev_stop (EV_A_ (W)w); 1909 ev_stop (EV_A_ (W)w);
1603} 1910}
1604 1911
1912#if EV_STAT_ENABLE
1913
1914# ifdef _WIN32
1915# undef lstat
1916# define lstat(a,b) _stati64 (a,b)
1917# endif
1918
1919#define DEF_STAT_INTERVAL 5.0074891
1920#define MIN_STAT_INTERVAL 0.1074891
1921
1922static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1923
1924#if EV_USE_INOTIFY
1925# define EV_INOTIFY_BUFSIZE 8192
1926
1927static void noinline
1928infy_add (EV_P_ ev_stat *w)
1929{
1930 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1931
1932 if (w->wd < 0)
1933 {
1934 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1935
1936 /* monitor some parent directory for speedup hints */
1937 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1938 {
1939 char path [4096];
1940 strcpy (path, w->path);
1941
1942 do
1943 {
1944 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1945 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1946
1947 char *pend = strrchr (path, '/');
1948
1949 if (!pend)
1950 break; /* whoops, no '/', complain to your admin */
1951
1952 *pend = 0;
1953 w->wd = inotify_add_watch (fs_fd, path, mask);
1954 }
1955 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1956 }
1957 }
1958 else
1959 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1960
1961 if (w->wd >= 0)
1962 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1963}
1964
1965static void noinline
1966infy_del (EV_P_ ev_stat *w)
1967{
1968 int slot;
1969 int wd = w->wd;
1970
1971 if (wd < 0)
1972 return;
1973
1974 w->wd = -2;
1975 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1976 wlist_del (&fs_hash [slot].head, (WL)w);
1977
1978 /* remove this watcher, if others are watching it, they will rearm */
1979 inotify_rm_watch (fs_fd, wd);
1980}
1981
1982static void noinline
1983infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1984{
1985 if (slot < 0)
1986 /* overflow, need to check for all hahs slots */
1987 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1988 infy_wd (EV_A_ slot, wd, ev);
1989 else
1990 {
1991 WL w_;
1992
1993 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1994 {
1995 ev_stat *w = (ev_stat *)w_;
1996 w_ = w_->next; /* lets us remove this watcher and all before it */
1997
1998 if (w->wd == wd || wd == -1)
1999 {
2000 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2001 {
2002 w->wd = -1;
2003 infy_add (EV_A_ w); /* re-add, no matter what */
2004 }
2005
2006 stat_timer_cb (EV_A_ &w->timer, 0);
2007 }
2008 }
2009 }
2010}
2011
2012static void
2013infy_cb (EV_P_ ev_io *w, int revents)
2014{
2015 char buf [EV_INOTIFY_BUFSIZE];
2016 struct inotify_event *ev = (struct inotify_event *)buf;
2017 int ofs;
2018 int len = read (fs_fd, buf, sizeof (buf));
2019
2020 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2021 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2022}
2023
2024void inline_size
2025infy_init (EV_P)
2026{
2027 if (fs_fd != -2)
2028 return;
2029
2030 fs_fd = inotify_init ();
2031
2032 if (fs_fd >= 0)
2033 {
2034 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2035 ev_set_priority (&fs_w, EV_MAXPRI);
2036 ev_io_start (EV_A_ &fs_w);
2037 }
2038}
2039
2040void inline_size
2041infy_fork (EV_P)
2042{
2043 int slot;
2044
2045 if (fs_fd < 0)
2046 return;
2047
2048 close (fs_fd);
2049 fs_fd = inotify_init ();
2050
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 {
2053 WL w_ = fs_hash [slot].head;
2054 fs_hash [slot].head = 0;
2055
2056 while (w_)
2057 {
2058 ev_stat *w = (ev_stat *)w_;
2059 w_ = w_->next; /* lets us add this watcher */
2060
2061 w->wd = -1;
2062
2063 if (fs_fd >= 0)
2064 infy_add (EV_A_ w); /* re-add, no matter what */
2065 else
2066 ev_timer_start (EV_A_ &w->timer);
2067 }
2068
2069 }
2070}
2071
2072#endif
2073
2074void
2075ev_stat_stat (EV_P_ ev_stat *w)
2076{
2077 if (lstat (w->path, &w->attr) < 0)
2078 w->attr.st_nlink = 0;
2079 else if (!w->attr.st_nlink)
2080 w->attr.st_nlink = 1;
2081}
2082
2083static void noinline
2084stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2085{
2086 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2087
2088 /* we copy this here each the time so that */
2089 /* prev has the old value when the callback gets invoked */
2090 w->prev = w->attr;
2091 ev_stat_stat (EV_A_ w);
2092
2093 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2094 if (
2095 w->prev.st_dev != w->attr.st_dev
2096 || w->prev.st_ino != w->attr.st_ino
2097 || w->prev.st_mode != w->attr.st_mode
2098 || w->prev.st_nlink != w->attr.st_nlink
2099 || w->prev.st_uid != w->attr.st_uid
2100 || w->prev.st_gid != w->attr.st_gid
2101 || w->prev.st_rdev != w->attr.st_rdev
2102 || w->prev.st_size != w->attr.st_size
2103 || w->prev.st_atime != w->attr.st_atime
2104 || w->prev.st_mtime != w->attr.st_mtime
2105 || w->prev.st_ctime != w->attr.st_ctime
2106 ) {
2107 #if EV_USE_INOTIFY
2108 infy_del (EV_A_ w);
2109 infy_add (EV_A_ w);
2110 ev_stat_stat (EV_A_ w); /* avoid race... */
2111 #endif
2112
2113 ev_feed_event (EV_A_ w, EV_STAT);
2114 }
2115}
2116
2117void
2118ev_stat_start (EV_P_ ev_stat *w)
2119{
2120 if (expect_false (ev_is_active (w)))
2121 return;
2122
2123 /* since we use memcmp, we need to clear any padding data etc. */
2124 memset (&w->prev, 0, sizeof (ev_statdata));
2125 memset (&w->attr, 0, sizeof (ev_statdata));
2126
2127 ev_stat_stat (EV_A_ w);
2128
2129 if (w->interval < MIN_STAT_INTERVAL)
2130 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2131
2132 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2133 ev_set_priority (&w->timer, ev_priority (w));
2134
2135#if EV_USE_INOTIFY
2136 infy_init (EV_A);
2137
2138 if (fs_fd >= 0)
2139 infy_add (EV_A_ w);
2140 else
2141#endif
2142 ev_timer_start (EV_A_ &w->timer);
2143
2144 ev_start (EV_A_ (W)w, 1);
2145}
2146
2147void
2148ev_stat_stop (EV_P_ ev_stat *w)
2149{
2150 clear_pending (EV_A_ (W)w);
2151 if (expect_false (!ev_is_active (w)))
2152 return;
2153
2154#if EV_USE_INOTIFY
2155 infy_del (EV_A_ w);
2156#endif
2157 ev_timer_stop (EV_A_ &w->timer);
2158
2159 ev_stop (EV_A_ (W)w);
2160}
2161#endif
2162
2163#if EV_IDLE_ENABLE
2164void
2165ev_idle_start (EV_P_ ev_idle *w)
2166{
2167 if (expect_false (ev_is_active (w)))
2168 return;
2169
2170 pri_adjust (EV_A_ (W)w);
2171
2172 {
2173 int active = ++idlecnt [ABSPRI (w)];
2174
2175 ++idleall;
2176 ev_start (EV_A_ (W)w, active);
2177
2178 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2179 idles [ABSPRI (w)][active - 1] = w;
2180 }
2181}
2182
2183void
2184ev_idle_stop (EV_P_ ev_idle *w)
2185{
2186 clear_pending (EV_A_ (W)w);
2187 if (expect_false (!ev_is_active (w)))
2188 return;
2189
2190 {
2191 int active = ((W)w)->active;
2192
2193 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2194 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2195
2196 ev_stop (EV_A_ (W)w);
2197 --idleall;
2198 }
2199}
2200#endif
2201
2202void
2203ev_prepare_start (EV_P_ ev_prepare *w)
2204{
2205 if (expect_false (ev_is_active (w)))
2206 return;
2207
2208 ev_start (EV_A_ (W)w, ++preparecnt);
2209 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2210 prepares [preparecnt - 1] = w;
2211}
2212
2213void
2214ev_prepare_stop (EV_P_ ev_prepare *w)
2215{
2216 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w)))
2218 return;
2219
2220 {
2221 int active = ((W)w)->active;
2222 prepares [active - 1] = prepares [--preparecnt];
2223 ((W)prepares [active - 1])->active = active;
2224 }
2225
2226 ev_stop (EV_A_ (W)w);
2227}
2228
2229void
2230ev_check_start (EV_P_ ev_check *w)
2231{
2232 if (expect_false (ev_is_active (w)))
2233 return;
2234
2235 ev_start (EV_A_ (W)w, ++checkcnt);
2236 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2237 checks [checkcnt - 1] = w;
2238}
2239
2240void
2241ev_check_stop (EV_P_ ev_check *w)
2242{
2243 clear_pending (EV_A_ (W)w);
2244 if (expect_false (!ev_is_active (w)))
2245 return;
2246
2247 {
2248 int active = ((W)w)->active;
2249 checks [active - 1] = checks [--checkcnt];
2250 ((W)checks [active - 1])->active = active;
2251 }
2252
2253 ev_stop (EV_A_ (W)w);
2254}
2255
2256#if EV_EMBED_ENABLE
2257void noinline
2258ev_embed_sweep (EV_P_ ev_embed *w)
2259{
2260 ev_loop (w->other, EVLOOP_NONBLOCK);
2261}
2262
2263static void
2264embed_io_cb (EV_P_ ev_io *io, int revents)
2265{
2266 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2267
2268 if (ev_cb (w))
2269 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2270 else
2271 ev_loop (w->other, EVLOOP_NONBLOCK);
2272}
2273
2274static void
2275embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276{
2277 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278
2279 {
2280 struct ev_loop *loop = w->other;
2281
2282 while (fdchangecnt)
2283 {
2284 fd_reify (EV_A);
2285 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2286 }
2287 }
2288}
2289
2290#if 0
2291static void
2292embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2293{
2294 ev_idle_stop (EV_A_ idle);
2295}
2296#endif
2297
2298void
2299ev_embed_start (EV_P_ ev_embed *w)
2300{
2301 if (expect_false (ev_is_active (w)))
2302 return;
2303
2304 {
2305 struct ev_loop *loop = w->other;
2306 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2307 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2308 }
2309
2310 ev_set_priority (&w->io, ev_priority (w));
2311 ev_io_start (EV_A_ &w->io);
2312
2313 ev_prepare_init (&w->prepare, embed_prepare_cb);
2314 ev_set_priority (&w->prepare, EV_MINPRI);
2315 ev_prepare_start (EV_A_ &w->prepare);
2316
2317 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2318
2319 ev_start (EV_A_ (W)w, 1);
2320}
2321
2322void
2323ev_embed_stop (EV_P_ ev_embed *w)
2324{
2325 clear_pending (EV_A_ (W)w);
2326 if (expect_false (!ev_is_active (w)))
2327 return;
2328
2329 ev_io_stop (EV_A_ &w->io);
2330 ev_prepare_stop (EV_A_ &w->prepare);
2331
2332 ev_stop (EV_A_ (W)w);
2333}
2334#endif
2335
2336#if EV_FORK_ENABLE
2337void
2338ev_fork_start (EV_P_ ev_fork *w)
2339{
2340 if (expect_false (ev_is_active (w)))
2341 return;
2342
2343 ev_start (EV_A_ (W)w, ++forkcnt);
2344 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2345 forks [forkcnt - 1] = w;
2346}
2347
2348void
2349ev_fork_stop (EV_P_ ev_fork *w)
2350{
2351 clear_pending (EV_A_ (W)w);
2352 if (expect_false (!ev_is_active (w)))
2353 return;
2354
2355 {
2356 int active = ((W)w)->active;
2357 forks [active - 1] = forks [--forkcnt];
2358 ((W)forks [active - 1])->active = active;
2359 }
2360
2361 ev_stop (EV_A_ (W)w);
2362}
2363#endif
2364
1605/*****************************************************************************/ 2365/*****************************************************************************/
1606 2366
1607struct ev_once 2367struct ev_once
1608{ 2368{
1609 struct ev_io io; 2369 ev_io io;
1610 struct ev_timer to; 2370 ev_timer to;
1611 void (*cb)(int revents, void *arg); 2371 void (*cb)(int revents, void *arg);
1612 void *arg; 2372 void *arg;
1613}; 2373};
1614 2374
1615static void 2375static void
… …
1624 2384
1625 cb (revents, arg); 2385 cb (revents, arg);
1626} 2386}
1627 2387
1628static void 2388static void
1629once_cb_io (EV_P_ struct ev_io *w, int revents) 2389once_cb_io (EV_P_ ev_io *w, int revents)
1630{ 2390{
1631 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2391 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1632} 2392}
1633 2393
1634static void 2394static void
1635once_cb_to (EV_P_ struct ev_timer *w, int revents) 2395once_cb_to (EV_P_ ev_timer *w, int revents)
1636{ 2396{
1637 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2397 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1638} 2398}
1639 2399
1640void 2400void
1641ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2401ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1642{ 2402{
1643 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2403 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1644 2404
1645 if (!once) 2405 if (expect_false (!once))
2406 {
1646 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2407 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1647 else 2408 return;
1648 { 2409 }
2410
1649 once->cb = cb; 2411 once->cb = cb;
1650 once->arg = arg; 2412 once->arg = arg;
1651 2413
1652 ev_init (&once->io, once_cb_io); 2414 ev_init (&once->io, once_cb_io);
1653 if (fd >= 0) 2415 if (fd >= 0)
1654 { 2416 {
1655 ev_io_set (&once->io, fd, events); 2417 ev_io_set (&once->io, fd, events);
1656 ev_io_start (EV_A_ &once->io); 2418 ev_io_start (EV_A_ &once->io);
1657 } 2419 }
1658 2420
1659 ev_init (&once->to, once_cb_to); 2421 ev_init (&once->to, once_cb_to);
1660 if (timeout >= 0.) 2422 if (timeout >= 0.)
1661 { 2423 {
1662 ev_timer_set (&once->to, timeout, 0.); 2424 ev_timer_set (&once->to, timeout, 0.);
1663 ev_timer_start (EV_A_ &once->to); 2425 ev_timer_start (EV_A_ &once->to);
1664 }
1665 } 2426 }
1666} 2427}
2428
2429#if EV_MULTIPLICITY
2430 #include "ev_wrap.h"
2431#endif
1667 2432
1668#ifdef __cplusplus 2433#ifdef __cplusplus
1669} 2434}
1670#endif 2435#endif
1671 2436

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