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Comparing libev/ev.c (file contents):
Revision 1.94 by root, Sun Nov 11 01:29:49 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
44# ifndef EV_USE_MONOTONIC
40# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
41# 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
42# endif 57# endif
43 58
44# if HAVE_SELECT && HAVE_SYS_SELECT_H 59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
45# define EV_USE_SELECT 1 61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
46# endif 65# endif
47 66
48# if HAVE_POLL && HAVE_POLL_H 67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_POLL 1 69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
50# endif 73# endif
51 74
52# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_EPOLL 1 77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
54# endif 81# endif
55 82
83# ifndef EV_USE_EPOLL
84# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
85# define EV_USE_EPOLL 1
86# else
87# define EV_USE_EPOLL 0
88# endif
89# endif
90
91# ifndef EV_USE_KQUEUE
56# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57# define EV_USE_KQUEUE 1 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
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
58# endif 113# endif
59 114
60#endif 115#endif
61 116
62#include <math.h> 117#include <math.h>
… …
71#include <sys/types.h> 126#include <sys/types.h>
72#include <time.h> 127#include <time.h>
73 128
74#include <signal.h> 129#include <signal.h>
75 130
76#ifndef WIN32
77# include <unistd.h>
78# include <sys/time.h>
79# include <sys/wait.h>
80#endif
81/**/
82
83#ifndef EV_USE_MONOTONIC
84# define EV_USE_MONOTONIC 1
85#endif
86
87#ifndef EV_USE_SELECT
88# define EV_USE_SELECT 1
89#endif
90
91#ifndef EV_USE_POLL
92# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93#endif
94
95#ifndef EV_USE_EPOLL
96# define EV_USE_EPOLL 0
97#endif
98
99#ifndef EV_USE_KQUEUE
100# define EV_USE_KQUEUE 0
101#endif
102
103#ifndef EV_USE_WIN32
104# ifdef WIN32
105# define EV_USE_WIN32 0 /* it does not exist, use select */
106# undef EV_USE_SELECT
107# define EV_USE_SELECT 1
108# else
109# define EV_USE_WIN32 0
110# endif
111#endif
112
113#ifndef EV_USE_REALTIME
114# define EV_USE_REALTIME 1
115#endif
116
117/**/
118
119#ifndef CLOCK_MONOTONIC
120# undef EV_USE_MONOTONIC
121# define EV_USE_MONOTONIC 0
122#endif
123
124#ifndef CLOCK_REALTIME
125# undef EV_USE_REALTIME
126# define EV_USE_REALTIME 0
127#endif
128
129/**/
130
131#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
133#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
135
136#ifdef EV_H 131#ifdef EV_H
137# include EV_H 132# include EV_H
138#else 133#else
139# include "ev.h" 134# include "ev.h"
140#endif 135#endif
141 136
137#ifndef _WIN32
138# include <sys/time.h>
139# include <sys/wait.h>
140# include <unistd.h>
141#else
142# define WIN32_LEAN_AND_MEAN
143# include <windows.h>
144# ifndef EV_SELECT_IS_WINSOCKET
145# define EV_SELECT_IS_WINSOCKET 1
146# endif
147#endif
148
149/**/
150
151#ifndef EV_USE_MONOTONIC
152# define EV_USE_MONOTONIC 0
153#endif
154
155#ifndef EV_USE_REALTIME
156# define EV_USE_REALTIME 0
157#endif
158
159#ifndef EV_USE_NANOSLEEP
160# define EV_USE_NANOSLEEP 0
161#endif
162
163#ifndef EV_USE_SELECT
164# define EV_USE_SELECT 1
165#endif
166
167#ifndef EV_USE_POLL
168# ifdef _WIN32
169# define EV_USE_POLL 0
170# else
171# define EV_USE_POLL 1
172# endif
173#endif
174
175#ifndef EV_USE_EPOLL
176# define EV_USE_EPOLL 0
177#endif
178
179#ifndef EV_USE_KQUEUE
180# define EV_USE_KQUEUE 0
181#endif
182
183#ifndef EV_USE_PORT
184# define EV_USE_PORT 0
185#endif
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
207/**/
208
209#ifndef CLOCK_MONOTONIC
210# undef EV_USE_MONOTONIC
211# define EV_USE_MONOTONIC 0
212#endif
213
214#ifndef CLOCK_REALTIME
215# undef EV_USE_REALTIME
216# define EV_USE_REALTIME 0
217#endif
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
234#if EV_SELECT_IS_WINSOCKET
235# include <winsock.h>
236#endif
237
238/**/
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
250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
253
142#if __GNUC__ >= 3 254#if __GNUC__ >= 4
143# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
144# define inline inline 256# define noinline __attribute__ ((noinline))
145#else 257#else
146# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
147# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
148#endif 263#endif
149 264
150#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
151#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
152 274
153#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
155 277
278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
280
156typedef struct ev_watcher *W; 281typedef ev_watcher *W;
157typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
158typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
159 284
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 */
160static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161 288
289#ifdef _WIN32
162#include "ev_win32.c" 290# include "ev_win32.c"
291#endif
163 292
164/*****************************************************************************/ 293/*****************************************************************************/
165 294
166static void (*syserr_cb)(const char *msg); 295static void (*syserr_cb)(const char *msg);
167 296
297void
168void ev_set_syserr_cb (void (*cb)(const char *msg)) 298ev_set_syserr_cb (void (*cb)(const char *msg))
169{ 299{
170 syserr_cb = cb; 300 syserr_cb = cb;
171} 301}
172 302
173static void 303static void noinline
174syserr (const char *msg) 304syserr (const char *msg)
175{ 305{
176 if (!msg) 306 if (!msg)
177 msg = "(libev) system error"; 307 msg = "(libev) system error";
178 308
… …
185 } 315 }
186} 316}
187 317
188static void *(*alloc)(void *ptr, long size); 318static void *(*alloc)(void *ptr, long size);
189 319
320void
190void ev_set_allocator (void *(*cb)(void *ptr, long size)) 321ev_set_allocator (void *(*cb)(void *ptr, long size))
191{ 322{
192 alloc = cb; 323 alloc = cb;
193} 324}
194 325
195static void * 326inline_speed void *
196ev_realloc (void *ptr, long size) 327ev_realloc (void *ptr, long size)
197{ 328{
198 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 329 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199 330
200 if (!ptr && size) 331 if (!ptr && size)
… …
214typedef struct 345typedef struct
215{ 346{
216 WL head; 347 WL head;
217 unsigned char events; 348 unsigned char events;
218 unsigned char reify; 349 unsigned char reify;
350#if EV_SELECT_IS_WINSOCKET
351 SOCKET handle;
352#endif
219} ANFD; 353} ANFD;
220 354
221typedef struct 355typedef struct
222{ 356{
223 W w; 357 W w;
224 int events; 358 int events;
225} ANPENDING; 359} ANPENDING;
226 360
361#if EV_USE_INOTIFY
362typedef struct
363{
364 WL head;
365} ANFS;
366#endif
367
227#if EV_MULTIPLICITY 368#if EV_MULTIPLICITY
228 369
229 struct ev_loop 370 struct ev_loop
230 { 371 {
231 ev_tstamp ev_rt_now; 372 ev_tstamp ev_rt_now;
373 #define ev_rt_now ((loop)->ev_rt_now)
232 #define VAR(name,decl) decl; 374 #define VAR(name,decl) decl;
233 #include "ev_vars.h" 375 #include "ev_vars.h"
234 #undef VAR 376 #undef VAR
235 }; 377 };
236 #include "ev_wrap.h" 378 #include "ev_wrap.h"
237 379
238 struct ev_loop default_loop_struct; 380 static struct ev_loop default_loop_struct;
239 static struct ev_loop *default_loop; 381 struct ev_loop *ev_default_loop_ptr;
240 382
241#else 383#else
242 384
243 ev_tstamp ev_rt_now; 385 ev_tstamp ev_rt_now;
244 #define VAR(name,decl) static decl; 386 #define VAR(name,decl) static decl;
245 #include "ev_vars.h" 387 #include "ev_vars.h"
246 #undef VAR 388 #undef VAR
247 389
248 static int default_loop; 390 static int ev_default_loop_ptr;
249 391
250#endif 392#endif
251 393
252/*****************************************************************************/ 394/*****************************************************************************/
253 395
… …
263 gettimeofday (&tv, 0); 405 gettimeofday (&tv, 0);
264 return tv.tv_sec + tv.tv_usec * 1e-6; 406 return tv.tv_sec + tv.tv_usec * 1e-6;
265#endif 407#endif
266} 408}
267 409
268inline ev_tstamp 410ev_tstamp inline_size
269get_clock (void) 411get_clock (void)
270{ 412{
271#if EV_USE_MONOTONIC 413#if EV_USE_MONOTONIC
272 if (expect_true (have_monotonic)) 414 if (expect_true (have_monotonic))
273 { 415 {
… …
286{ 428{
287 return ev_rt_now; 429 return ev_rt_now;
288} 430}
289#endif 431#endif
290 432
291#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}
292 487
293#define array_needsize(type,base,cur,cnt,init) \ 488#define array_needsize(type,base,cur,cnt,init) \
294 if (expect_false ((cnt) > cur)) \ 489 if (expect_false ((cnt) > (cur))) \
295 { \ 490 { \
296 int newcnt = cur; \ 491 int ocur_ = (cur); \
297 do \ 492 (base) = (type *)array_realloc \
298 { \ 493 (sizeof (type), (base), &(cur), (cnt)); \
299 newcnt = array_roundsize (type, newcnt << 1); \ 494 init ((base) + (ocur_), (cur) - ocur_); \
300 } \
301 while ((cnt) > newcnt); \
302 \
303 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
304 init (base + cur, newcnt - cur); \
305 cur = newcnt; \
306 } 495 }
307 496
497#if 0
308#define array_slim(type,stem) \ 498#define array_slim(type,stem) \
309 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 499 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310 { \ 500 { \
311 stem ## max = array_roundsize (stem ## cnt >> 1); \ 501 stem ## max = array_roundsize (stem ## cnt >> 1); \
312 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 502 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 503 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314 } 504 }
315 505#endif
316/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318#define array_free_microshit(stem) \
319 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320 506
321#define array_free(stem, idx) \ 507#define array_free(stem, idx) \
322 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;
323 509
324/*****************************************************************************/ 510/*****************************************************************************/
325 511
326static 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
327anfds_init (ANFD *base, int count) 541anfds_init (ANFD *base, int count)
328{ 542{
329 while (count--) 543 while (count--)
330 { 544 {
331 base->head = 0; 545 base->head = 0;
… …
334 548
335 ++base; 549 ++base;
336 } 550 }
337} 551}
338 552
339void 553void inline_speed
340ev_feed_event (EV_P_ void *w, int revents)
341{
342 W w_ = (W)w;
343
344 if (w_->pending)
345 {
346 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
347 return;
348 }
349
350 w_->pending = ++pendingcnt [ABSPRI (w_)];
351 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354}
355
356static void
357queue_events (EV_P_ W *events, int eventcnt, int type)
358{
359 int i;
360
361 for (i = 0; i < eventcnt; ++i)
362 ev_feed_event (EV_A_ events [i], type);
363}
364
365inline void
366fd_event (EV_P_ int fd, int revents) 554fd_event (EV_P_ int fd, int revents)
367{ 555{
368 ANFD *anfd = anfds + fd; 556 ANFD *anfd = anfds + fd;
369 struct ev_io *w; 557 ev_io *w;
370 558
371 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)
372 { 560 {
373 int ev = w->events & revents; 561 int ev = w->events & revents;
374 562
375 if (ev) 563 if (ev)
376 ev_feed_event (EV_A_ (W)w, ev); 564 ev_feed_event (EV_A_ (W)w, ev);
… …
378} 566}
379 567
380void 568void
381ev_feed_fd_event (EV_P_ int fd, int revents) 569ev_feed_fd_event (EV_P_ int fd, int revents)
382{ 570{
571 if (fd >= 0 && fd < anfdmax)
383 fd_event (EV_A_ fd, revents); 572 fd_event (EV_A_ fd, revents);
384} 573}
385 574
386/*****************************************************************************/ 575void inline_size
387
388static void
389fd_reify (EV_P) 576fd_reify (EV_P)
390{ 577{
391 int i; 578 int i;
392 579
393 for (i = 0; i < fdchangecnt; ++i) 580 for (i = 0; i < fdchangecnt; ++i)
394 { 581 {
395 int fd = fdchanges [i]; 582 int fd = fdchanges [i];
396 ANFD *anfd = anfds + fd; 583 ANFD *anfd = anfds + fd;
397 struct ev_io *w; 584 ev_io *w;
398 585
399 int events = 0; 586 unsigned char events = 0;
400 587
401 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)
402 events |= w->events; 589 events |= (unsigned char)w->events;
403 590
591#if EV_SELECT_IS_WINSOCKET
592 if (events)
593 {
594 unsigned long argp;
595 anfd->handle = _get_osfhandle (fd);
596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
597 }
598#endif
599
600 {
601 unsigned char o_events = anfd->events;
602 unsigned char o_reify = anfd->reify;
603
404 anfd->reify = 0; 604 anfd->reify = 0;
405
406 method_modify (EV_A_ fd, anfd->events, events);
407 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 }
408 } 610 }
409 611
410 fdchangecnt = 0; 612 fdchangecnt = 0;
411} 613}
412 614
413static void 615void inline_size
414fd_change (EV_P_ int fd) 616fd_change (EV_P_ int fd, int flags)
415{ 617{
416 if (anfds [fd].reify) 618 unsigned char reify = anfds [fd].reify;
417 return;
418
419 anfds [fd].reify = 1; 619 anfds [fd].reify |= flags;
420 620
621 if (expect_true (!reify))
622 {
421 ++fdchangecnt; 623 ++fdchangecnt;
422 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 624 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423 fdchanges [fdchangecnt - 1] = fd; 625 fdchanges [fdchangecnt - 1] = fd;
626 }
424} 627}
425 628
426static void 629void inline_speed
427fd_kill (EV_P_ int fd) 630fd_kill (EV_P_ int fd)
428{ 631{
429 struct ev_io *w; 632 ev_io *w;
430 633
431 while ((w = (struct ev_io *)anfds [fd].head)) 634 while ((w = (ev_io *)anfds [fd].head))
432 { 635 {
433 ev_io_stop (EV_A_ w); 636 ev_io_stop (EV_A_ w);
434 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);
435 } 638 }
436} 639}
437 640
438static int 641int inline_size
439fd_valid (int fd) 642fd_valid (int fd)
440{ 643{
441#ifdef WIN32 644#ifdef _WIN32
442 return !!win32_get_osfhandle (fd); 645 return _get_osfhandle (fd) != -1;
443#else 646#else
444 return fcntl (fd, F_GETFD) != -1; 647 return fcntl (fd, F_GETFD) != -1;
445#endif 648#endif
446} 649}
447 650
448/* called on EBADF to verify fds */ 651/* called on EBADF to verify fds */
449static void 652static void noinline
450fd_ebadf (EV_P) 653fd_ebadf (EV_P)
451{ 654{
452 int fd; 655 int fd;
453 656
454 for (fd = 0; fd < anfdmax; ++fd) 657 for (fd = 0; fd < anfdmax; ++fd)
… …
456 if (!fd_valid (fd) == -1 && errno == EBADF) 659 if (!fd_valid (fd) == -1 && errno == EBADF)
457 fd_kill (EV_A_ fd); 660 fd_kill (EV_A_ fd);
458} 661}
459 662
460/* 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 */
461static void 664static void noinline
462fd_enomem (EV_P) 665fd_enomem (EV_P)
463{ 666{
464 int fd; 667 int fd;
465 668
466 for (fd = anfdmax; fd--; ) 669 for (fd = anfdmax; fd--; )
… …
469 fd_kill (EV_A_ fd); 672 fd_kill (EV_A_ fd);
470 return; 673 return;
471 } 674 }
472} 675}
473 676
474/* 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 */
475static void 678static void noinline
476fd_rearm_all (EV_P) 679fd_rearm_all (EV_P)
477{ 680{
478 int fd; 681 int fd;
479 682
480 /* this should be highly optimised to not do anything but set a flag */
481 for (fd = 0; fd < anfdmax; ++fd) 683 for (fd = 0; fd < anfdmax; ++fd)
482 if (anfds [fd].events) 684 if (anfds [fd].events)
483 { 685 {
484 anfds [fd].events = 0; 686 anfds [fd].events = 0;
485 fd_change (EV_A_ fd); 687 fd_change (EV_A_ fd, EV_IOFDSET | 1);
486 } 688 }
487} 689}
488 690
489/*****************************************************************************/ 691/*****************************************************************************/
490 692
491static void 693void inline_speed
492upheap (WT *heap, int k) 694upheap (WT *heap, int k)
493{ 695{
494 WT w = heap [k]; 696 WT w = heap [k];
495 697
496 while (k && heap [k >> 1]->at > w->at) 698 while (k)
497 { 699 {
700 int p = (k - 1) >> 1;
701
702 if (heap [p]->at <= w->at)
703 break;
704
498 heap [k] = heap [k >> 1]; 705 heap [k] = heap [p];
499 ((W)heap [k])->active = k + 1; 706 ((W)heap [k])->active = k + 1;
500 k >>= 1; 707 k = p;
501 } 708 }
502 709
503 heap [k] = w; 710 heap [k] = w;
504 ((W)heap [k])->active = k + 1; 711 ((W)heap [k])->active = k + 1;
505
506} 712}
507 713
508static void 714void inline_speed
509downheap (WT *heap, int N, int k) 715downheap (WT *heap, int N, int k)
510{ 716{
511 WT w = heap [k]; 717 WT w = heap [k];
512 718
513 while (k < (N >> 1)) 719 for (;;)
514 { 720 {
515 int j = k << 1; 721 int c = (k << 1) + 1;
516 722
517 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 723 if (c >= N)
518 ++j;
519
520 if (w->at <= heap [j]->at)
521 break; 724 break;
522 725
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
523 heap [k] = heap [j]; 732 heap [k] = heap [c];
524 ((W)heap [k])->active = k + 1; 733 ((W)heap [k])->active = k + 1;
734
525 k = j; 735 k = c;
526 } 736 }
527 737
528 heap [k] = w; 738 heap [k] = w;
529 ((W)heap [k])->active = k + 1; 739 ((W)heap [k])->active = k + 1;
530} 740}
531 741
532inline void 742void inline_size
533adjustheap (WT *heap, int N, int k, ev_tstamp at) 743adjustheap (WT *heap, int N, int k)
534{ 744{
535 ev_tstamp old_at = heap [k]->at; 745 upheap (heap, k);
536 heap [k]->at = at;
537
538 if (old_at < at)
539 downheap (heap, N, k); 746 downheap (heap, N, k);
540 else
541 upheap (heap, k);
542} 747}
543 748
544/*****************************************************************************/ 749/*****************************************************************************/
545 750
546typedef struct 751typedef struct
… …
552static ANSIG *signals; 757static ANSIG *signals;
553static int signalmax; 758static int signalmax;
554 759
555static int sigpipe [2]; 760static int sigpipe [2];
556static sig_atomic_t volatile gotsig; 761static sig_atomic_t volatile gotsig;
557static struct ev_io sigev; 762static ev_io sigev;
558 763
559static void 764void inline_size
560signals_init (ANSIG *base, int count) 765signals_init (ANSIG *base, int count)
561{ 766{
562 while (count--) 767 while (count--)
563 { 768 {
564 base->head = 0; 769 base->head = 0;
… …
569} 774}
570 775
571static void 776static void
572sighandler (int signum) 777sighandler (int signum)
573{ 778{
574#if WIN32 779#if _WIN32
575 signal (signum, sighandler); 780 signal (signum, sighandler);
576#endif 781#endif
577 782
578 signals [signum - 1].gotsig = 1; 783 signals [signum - 1].gotsig = 1;
579 784
580 if (!gotsig) 785 if (!gotsig)
581 { 786 {
582 int old_errno = errno; 787 int old_errno = errno;
583 gotsig = 1; 788 gotsig = 1;
584#ifdef WIN32
585 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586#else
587 write (sigpipe [1], &signum, 1); 789 write (sigpipe [1], &signum, 1);
588#endif
589 errno = old_errno; 790 errno = old_errno;
590 } 791 }
591} 792}
592 793
593void 794void noinline
594ev_feed_signal_event (EV_P_ int signum) 795ev_feed_signal_event (EV_P_ int signum)
595{ 796{
596 WL w; 797 WL w;
597 798
598#if EV_MULTIPLICITY 799#if EV_MULTIPLICITY
599 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 800 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600#endif 801#endif
601 802
602 --signum; 803 --signum;
603 804
604 if (signum < 0 || signum >= signalmax) 805 if (signum < 0 || signum >= signalmax)
… …
609 for (w = signals [signum].head; w; w = w->next) 810 for (w = signals [signum].head; w; w = w->next)
610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 811 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611} 812}
612 813
613static void 814static void
614sigcb (EV_P_ struct ev_io *iow, int revents) 815sigcb (EV_P_ ev_io *iow, int revents)
615{ 816{
616 int signum; 817 int signum;
617 818
618#ifdef WIN32
619 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620#else
621 read (sigpipe [0], &revents, 1); 819 read (sigpipe [0], &revents, 1);
622#endif
623 gotsig = 0; 820 gotsig = 0;
624 821
625 for (signum = signalmax; signum--; ) 822 for (signum = signalmax; signum--; )
626 if (signals [signum].gotsig) 823 if (signals [signum].gotsig)
627 ev_feed_signal_event (EV_A_ signum + 1); 824 ev_feed_signal_event (EV_A_ signum + 1);
628} 825}
629 826
630static void 827void inline_speed
828fd_intern (int fd)
829{
830#ifdef _WIN32
831 int arg = 1;
832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
833#else
834 fcntl (fd, F_SETFD, FD_CLOEXEC);
835 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif
837}
838
839static void noinline
631siginit (EV_P) 840siginit (EV_P)
632{ 841{
633#ifndef WIN32 842 fd_intern (sigpipe [0]);
634 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 843 fd_intern (sigpipe [1]);
635 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637 /* rather than sort out wether we really need nb, set it */
638 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640#endif
641 844
642 ev_io_set (&sigev, sigpipe [0], EV_READ); 845 ev_io_set (&sigev, sigpipe [0], EV_READ);
643 ev_io_start (EV_A_ &sigev); 846 ev_io_start (EV_A_ &sigev);
644 ev_unref (EV_A); /* child watcher should not keep loop alive */ 847 ev_unref (EV_A); /* child watcher should not keep loop alive */
645} 848}
646 849
647/*****************************************************************************/ 850/*****************************************************************************/
648 851
649static struct ev_child *childs [PID_HASHSIZE]; 852static WL childs [EV_PID_HASHSIZE];
650 853
651#ifndef WIN32 854#ifndef _WIN32
652 855
653static 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}
654 872
655#ifndef WCONTINUED 873#ifndef WCONTINUED
656# define WCONTINUED 0 874# define WCONTINUED 0
657#endif 875#endif
658 876
659static void 877static void
660child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
661{
662 struct ev_child *w;
663
664 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
665 if (w->pid == pid || !w->pid)
666 {
667 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668 w->rpid = pid;
669 w->rstatus = status;
670 ev_feed_event (EV_A_ (W)w, EV_CHILD);
671 }
672}
673
674static void
675childcb (EV_P_ struct ev_signal *sw, int revents) 878childcb (EV_P_ ev_signal *sw, int revents)
676{ 879{
677 int pid, status; 880 int pid, status;
678 881
882 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 883 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680 { 884 if (!WCONTINUED
885 || errno != EINVAL
886 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887 return;
888
681 /* 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 */
682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 891 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683 892
684 child_reap (EV_A_ sw, pid, pid, status); 893 child_reap (EV_A_ sw, pid, pid, status);
894 if (EV_PID_HASHSIZE > 1)
685 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 */
686 }
687} 896}
688 897
689#endif 898#endif
690 899
691/*****************************************************************************/ 900/*****************************************************************************/
692 901
902#if EV_USE_PORT
903# include "ev_port.c"
904#endif
693#if EV_USE_KQUEUE 905#if EV_USE_KQUEUE
694# include "ev_kqueue.c" 906# include "ev_kqueue.c"
695#endif 907#endif
696#if EV_USE_EPOLL 908#if EV_USE_EPOLL
697# include "ev_epoll.c" 909# include "ev_epoll.c"
… …
714{ 926{
715 return EV_VERSION_MINOR; 927 return EV_VERSION_MINOR;
716} 928}
717 929
718/* 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 */
719static int 931int inline_size
720enable_secure (void) 932enable_secure (void)
721{ 933{
722#ifdef WIN32 934#ifdef _WIN32
723 return 0; 935 return 0;
724#else 936#else
725 return getuid () != geteuid () 937 return getuid () != geteuid ()
726 || getgid () != getegid (); 938 || getgid () != getegid ();
727#endif 939#endif
728} 940}
729 941
730int 942unsigned int
731ev_method (EV_P) 943ev_supported_backends (void)
732{ 944{
733 return method; 945 unsigned int flags = 0;
734}
735 946
736static void 947 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737loop_init (EV_P_ int methods) 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)
738{ 958{
739 if (!method) 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
1007loop_init (EV_P_ unsigned int flags)
1008{
1009 if (!backend)
740 { 1010 {
741#if EV_USE_MONOTONIC 1011#if EV_USE_MONOTONIC
742 { 1012 {
743 struct timespec ts; 1013 struct timespec ts;
744 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1014 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
749 ev_rt_now = ev_time (); 1019 ev_rt_now = ev_time ();
750 mn_now = get_clock (); 1020 mn_now = get_clock ();
751 now_floor = mn_now; 1021 now_floor = mn_now;
752 rtmn_diff = ev_rt_now - mn_now; 1022 rtmn_diff = ev_rt_now - mn_now;
753 1023
754 if (methods == EVMETHOD_AUTO) 1024 io_blocktime = 0.;
755 if (!enable_secure () && getenv ("LIBEV_METHODS")) 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"))
756 methods = atoi (getenv ("LIBEV_METHODS")); 1036 flags = atoi (getenv ("LIBEV_FLAGS"));
757 else
758 methods = EVMETHOD_ANY;
759 1037
760 method = 0; 1038 if (!(flags & 0x0000ffffUL))
1039 flags |= ev_recommended_backends ();
1040
1041 backend = 0;
1042 backend_fd = -1;
761#if EV_USE_WIN32 1043#if EV_USE_INOTIFY
762 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1044 fs_fd = -2;
1045#endif
1046
1047#if EV_USE_PORT
1048 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763#endif 1049#endif
764#if EV_USE_KQUEUE 1050#if EV_USE_KQUEUE
765 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1051 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766#endif 1052#endif
767#if EV_USE_EPOLL 1053#if EV_USE_EPOLL
768 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1054 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769#endif 1055#endif
770#if EV_USE_POLL 1056#if EV_USE_POLL
771 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1057 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772#endif 1058#endif
773#if EV_USE_SELECT 1059#if EV_USE_SELECT
774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1060 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775#endif 1061#endif
776 1062
777 ev_init (&sigev, sigcb); 1063 ev_init (&sigev, sigcb);
778 ev_set_priority (&sigev, EV_MAXPRI); 1064 ev_set_priority (&sigev, EV_MAXPRI);
779 } 1065 }
780} 1066}
781 1067
782void 1068static void noinline
783loop_destroy (EV_P) 1069loop_destroy (EV_P)
784{ 1070{
785 int i; 1071 int i;
786 1072
787#if EV_USE_WIN32 1073#if EV_USE_INOTIFY
788 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1074 if (fs_fd >= 0)
1075 close (fs_fd);
1076#endif
1077
1078 if (backend_fd >= 0)
1079 close (backend_fd);
1080
1081#if EV_USE_PORT
1082 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789#endif 1083#endif
790#if EV_USE_KQUEUE 1084#if EV_USE_KQUEUE
791 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1085 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792#endif 1086#endif
793#if EV_USE_EPOLL 1087#if EV_USE_EPOLL
794 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1088 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795#endif 1089#endif
796#if EV_USE_POLL 1090#if EV_USE_POLL
797 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1091 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798#endif 1092#endif
799#if EV_USE_SELECT 1093#if EV_USE_SELECT
800 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1094 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801#endif 1095#endif
802 1096
803 for (i = NUMPRI; i--; ) 1097 for (i = NUMPRI; i--; )
1098 {
804 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;
805 1106
806 /* have to use the microsoft-never-gets-it-right macro */ 1107 /* have to use the microsoft-never-gets-it-right macro */
807 array_free_microshit (fdchange); 1108 array_free (fdchange, EMPTY);
808 array_free_microshit (timer); 1109 array_free (timer, EMPTY);
809#if EV_PERIODICS 1110#if EV_PERIODIC_ENABLE
810 array_free_microshit (periodic); 1111 array_free (periodic, EMPTY);
811#endif 1112#endif
812 array_free_microshit (idle); 1113#if EV_FORK_ENABLE
813 array_free_microshit (prepare); 1114 array_free (fork, EMPTY);
814 array_free_microshit (check); 1115#endif
1116 array_free (prepare, EMPTY);
1117 array_free (check, EMPTY);
815 1118
816 method = 0; 1119 backend = 0;
817} 1120}
818 1121
819static void 1122void inline_size infy_fork (EV_P);
1123
1124void inline_size
820loop_fork (EV_P) 1125loop_fork (EV_P)
821{ 1126{
1127#if EV_USE_PORT
1128 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1129#endif
1130#if EV_USE_KQUEUE
1131 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1132#endif
822#if EV_USE_EPOLL 1133#if EV_USE_EPOLL
823 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1134 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
824#endif 1135#endif
825#if EV_USE_KQUEUE 1136#if EV_USE_INOTIFY
826 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1137 infy_fork (EV_A);
827#endif 1138#endif
828 1139
829 if (ev_is_active (&sigev)) 1140 if (ev_is_active (&sigev))
830 { 1141 {
831 /* default loop */ 1142 /* default loop */
… …
844 postfork = 0; 1155 postfork = 0;
845} 1156}
846 1157
847#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
848struct ev_loop * 1159struct ev_loop *
849ev_loop_new (int methods) 1160ev_loop_new (unsigned int flags)
850{ 1161{
851 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1162 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
852 1163
853 memset (loop, 0, sizeof (struct ev_loop)); 1164 memset (loop, 0, sizeof (struct ev_loop));
854 1165
855 loop_init (EV_A_ methods); 1166 loop_init (EV_A_ flags);
856 1167
857 if (ev_method (EV_A)) 1168 if (ev_backend (EV_A))
858 return loop; 1169 return loop;
859 1170
860 return 0; 1171 return 0;
861} 1172}
862 1173
… …
875 1186
876#endif 1187#endif
877 1188
878#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
879struct ev_loop * 1190struct ev_loop *
1191ev_default_loop_init (unsigned int flags)
880#else 1192#else
881int 1193int
1194ev_default_loop (unsigned int flags)
882#endif 1195#endif
883ev_default_loop (int methods)
884{ 1196{
885 if (sigpipe [0] == sigpipe [1]) 1197 if (sigpipe [0] == sigpipe [1])
886 if (pipe (sigpipe)) 1198 if (pipe (sigpipe))
887 return 0; 1199 return 0;
888 1200
889 if (!default_loop) 1201 if (!ev_default_loop_ptr)
890 { 1202 {
891#if EV_MULTIPLICITY 1203#if EV_MULTIPLICITY
892 struct ev_loop *loop = default_loop = &default_loop_struct; 1204 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893#else 1205#else
894 default_loop = 1; 1206 ev_default_loop_ptr = 1;
895#endif 1207#endif
896 1208
897 loop_init (EV_A_ methods); 1209 loop_init (EV_A_ flags);
898 1210
899 if (ev_method (EV_A)) 1211 if (ev_backend (EV_A))
900 { 1212 {
901 siginit (EV_A); 1213 siginit (EV_A);
902 1214
903#ifndef WIN32 1215#ifndef _WIN32
904 ev_signal_init (&childev, childcb, SIGCHLD); 1216 ev_signal_init (&childev, childcb, SIGCHLD);
905 ev_set_priority (&childev, EV_MAXPRI); 1217 ev_set_priority (&childev, EV_MAXPRI);
906 ev_signal_start (EV_A_ &childev); 1218 ev_signal_start (EV_A_ &childev);
907 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1219 ev_unref (EV_A); /* child watcher should not keep loop alive */
908#endif 1220#endif
909 } 1221 }
910 else 1222 else
911 default_loop = 0; 1223 ev_default_loop_ptr = 0;
912 } 1224 }
913 1225
914 return default_loop; 1226 return ev_default_loop_ptr;
915} 1227}
916 1228
917void 1229void
918ev_default_destroy (void) 1230ev_default_destroy (void)
919{ 1231{
920#if EV_MULTIPLICITY 1232#if EV_MULTIPLICITY
921 struct ev_loop *loop = default_loop; 1233 struct ev_loop *loop = ev_default_loop_ptr;
922#endif 1234#endif
923 1235
924#ifndef WIN32 1236#ifndef _WIN32
925 ev_ref (EV_A); /* child watcher */ 1237 ev_ref (EV_A); /* child watcher */
926 ev_signal_stop (EV_A_ &childev); 1238 ev_signal_stop (EV_A_ &childev);
927#endif 1239#endif
928 1240
929 ev_ref (EV_A); /* signal watcher */ 1241 ev_ref (EV_A); /* signal watcher */
… …
937 1249
938void 1250void
939ev_default_fork (void) 1251ev_default_fork (void)
940{ 1252{
941#if EV_MULTIPLICITY 1253#if EV_MULTIPLICITY
942 struct ev_loop *loop = default_loop; 1254 struct ev_loop *loop = ev_default_loop_ptr;
943#endif 1255#endif
944 1256
945 if (method) 1257 if (backend)
946 postfork = 1; 1258 postfork = 1;
947} 1259}
948 1260
949/*****************************************************************************/ 1261/*****************************************************************************/
950 1262
951static int 1263void
952any_pending (EV_P) 1264ev_invoke (EV_P_ void *w, int revents)
953{ 1265{
954 int pri; 1266 EV_CB_INVOKE ((W)w, revents);
955
956 for (pri = NUMPRI; pri--; )
957 if (pendingcnt [pri])
958 return 1;
959
960 return 0;
961} 1267}
962 1268
963static void 1269void inline_speed
964call_pending (EV_P) 1270call_pending (EV_P)
965{ 1271{
966 int pri; 1272 int pri;
967 1273
968 for (pri = NUMPRI; pri--; ) 1274 for (pri = NUMPRI; pri--; )
969 while (pendingcnt [pri]) 1275 while (pendingcnt [pri])
970 { 1276 {
971 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1277 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
972 1278
973 if (p->w) 1279 if (expect_true (p->w))
974 { 1280 {
1281 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1282
975 p->w->pending = 0; 1283 p->w->pending = 0;
976 EV_CB_INVOKE (p->w, p->events); 1284 EV_CB_INVOKE (p->w, p->events);
977 } 1285 }
978 } 1286 }
979} 1287}
980 1288
981static void 1289void inline_size
982timers_reify (EV_P) 1290timers_reify (EV_P)
983{ 1291{
984 while (timercnt && ((WT)timers [0])->at <= mn_now) 1292 while (timercnt && ((WT)timers [0])->at <= mn_now)
985 { 1293 {
986 struct ev_timer *w = timers [0]; 1294 ev_timer *w = (ev_timer *)timers [0];
987 1295
988 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1296 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
989 1297
990 /* first reschedule or stop timer */ 1298 /* first reschedule or stop timer */
991 if (w->repeat) 1299 if (w->repeat)
992 { 1300 {
993 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.));
994 1302
995 ((WT)w)->at += w->repeat; 1303 ((WT)w)->at += w->repeat;
996 if (((WT)w)->at < mn_now) 1304 if (((WT)w)->at < mn_now)
997 ((WT)w)->at = mn_now; 1305 ((WT)w)->at = mn_now;
998 1306
999 downheap ((WT *)timers, timercnt, 0); 1307 downheap (timers, timercnt, 0);
1000 } 1308 }
1001 else 1309 else
1002 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1310 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1003 1311
1004 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1312 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1005 } 1313 }
1006} 1314}
1007 1315
1008#if EV_PERIODICS 1316#if EV_PERIODIC_ENABLE
1009static void 1317void inline_size
1010periodics_reify (EV_P) 1318periodics_reify (EV_P)
1011{ 1319{
1012 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1320 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1013 { 1321 {
1014 struct ev_periodic *w = periodics [0]; 1322 ev_periodic *w = (ev_periodic *)periodics [0];
1015 1323
1016 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1324 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1017 1325
1018 /* first reschedule or stop timer */ 1326 /* first reschedule or stop timer */
1019 if (w->reschedule_cb) 1327 if (w->reschedule_cb)
1020 { 1328 {
1021 ev_tstamp at = ((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);
1022
1023 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));
1024 downheap ((WT *)periodics, periodiccnt, 0); 1331 downheap (periodics, periodiccnt, 0);
1025 } 1332 }
1026 else if (w->interval) 1333 else if (w->interval)
1027 { 1334 {
1028 ((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;
1029 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));
1030 downheap ((WT *)periodics, periodiccnt, 0); 1338 downheap (periodics, periodiccnt, 0);
1031 } 1339 }
1032 else 1340 else
1033 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1341 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1034 1342
1035 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1343 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1036 } 1344 }
1037} 1345}
1038 1346
1039static void 1347static void noinline
1040periodics_reschedule (EV_P) 1348periodics_reschedule (EV_P)
1041{ 1349{
1042 int i; 1350 int i;
1043 1351
1044 /* adjust periodics after time jump */ 1352 /* adjust periodics after time jump */
1045 for (i = 0; i < periodiccnt; ++i) 1353 for (i = 0; i < periodiccnt; ++i)
1046 { 1354 {
1047 struct ev_periodic *w = periodics [i]; 1355 ev_periodic *w = (ev_periodic *)periodics [i];
1048 1356
1049 if (w->reschedule_cb) 1357 if (w->reschedule_cb)
1050 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1358 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1051 else if (w->interval) 1359 else if (w->interval)
1052 ((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;
1053 } 1361 }
1054 1362
1055 /* now rebuild the heap */ 1363 /* now rebuild the heap */
1056 for (i = periodiccnt >> 1; i--; ) 1364 for (i = periodiccnt >> 1; i--; )
1057 downheap ((WT *)periodics, periodiccnt, i); 1365 downheap (periodics, periodiccnt, i);
1058} 1366}
1059#endif 1367#endif
1060 1368
1061inline int 1369#if EV_IDLE_ENABLE
1062time_update_monotonic (EV_P) 1370void inline_size
1371idle_reify (EV_P)
1063{ 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
1064 mn_now = get_clock (); 1402 mn_now = get_clock ();
1065 1403
1404 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1405 /* interpolate in the meantime */
1066 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1406 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1067 { 1407 {
1068 ev_rt_now = rtmn_diff + mn_now; 1408 ev_rt_now = rtmn_diff + mn_now;
1069 return 0; 1409 return;
1070 } 1410 }
1071 else 1411
1072 {
1073 now_floor = mn_now; 1412 now_floor = mn_now;
1074 ev_rt_now = ev_time (); 1413 ev_rt_now = ev_time ();
1075 return 1;
1076 }
1077}
1078 1414
1079static void 1415 /* loop a few times, before making important decisions.
1080time_update (EV_P) 1416 * on the choice of "4": one iteration isn't enough,
1081{ 1417 * in case we get preempted during the calls to
1082 int i; 1418 * ev_time and get_clock. a second call is almost guaranteed
1083 1419 * to succeed in that case, though. and looping a few more times
1084#if EV_USE_MONOTONIC 1420 * doesn't hurt either as we only do this on time-jumps or
1085 if (expect_true (have_monotonic)) 1421 * in the unlikely event of having been preempted here.
1086 { 1422 */
1087 if (time_update_monotonic (EV_A)) 1423 for (i = 4; --i; )
1088 { 1424 {
1089 ev_tstamp odiff = rtmn_diff;
1090
1091 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1092 {
1093 rtmn_diff = ev_rt_now - mn_now; 1425 rtmn_diff = ev_rt_now - mn_now;
1094 1426
1095 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1427 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1096 return; /* all is well */ 1428 return; /* all is well */
1097 1429
1098 ev_rt_now = ev_time (); 1430 ev_rt_now = ev_time ();
1099 mn_now = get_clock (); 1431 mn_now = get_clock ();
1100 now_floor = mn_now; 1432 now_floor = mn_now;
1101 } 1433 }
1102 1434
1103# 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
1104 periodics_reschedule (EV_A); 1449 periodics_reschedule (EV_A);
1105# endif 1450#endif
1106 /* no timer adjustment, as the monotonic clock doesn't jump */
1107 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1108 }
1109 }
1110 else
1111#endif
1112 {
1113 ev_rt_now = ev_time ();
1114
1115 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1116 {
1117#if EV_PERIODICS
1118 periodics_reschedule (EV_A);
1119#endif
1120
1121 /* 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 */
1122 for (i = 0; i < timercnt; ++i) 1452 for (i = 0; i < timercnt; ++i)
1123 ((WT)timers [i])->at += ev_rt_now - mn_now; 1453 ((WT)timers [i])->at += ev_rt_now - mn_now;
1124 } 1454 }
1125 1455
1126 mn_now = ev_rt_now; 1456 mn_now = ev_rt_now;
… …
1142static int loop_done; 1472static int loop_done;
1143 1473
1144void 1474void
1145ev_loop (EV_P_ int flags) 1475ev_loop (EV_P_ int flags)
1146{ 1476{
1147 double block;
1148 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1477 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1478 ? EVUNLOOP_ONE
1479 : EVUNLOOP_CANCEL;
1480
1481 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1149 1482
1150 do 1483 do
1151 { 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
1152 /* queue check watchers (and execute them) */ 1504 /* queue prepare watchers (and execute them) */
1153 if (expect_false (preparecnt)) 1505 if (expect_false (preparecnt))
1154 { 1506 {
1155 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1507 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1156 call_pending (EV_A); 1508 call_pending (EV_A);
1157 } 1509 }
1158 1510
1511 if (expect_false (!activecnt))
1512 break;
1513
1159 /* we might have forked, so reify kernel state if necessary */ 1514 /* we might have forked, so reify kernel state if necessary */
1160 if (expect_false (postfork)) 1515 if (expect_false (postfork))
1161 loop_fork (EV_A); 1516 loop_fork (EV_A);
1162 1517
1163 /* update fd-related kernel structures */ 1518 /* update fd-related kernel structures */
1164 fd_reify (EV_A); 1519 fd_reify (EV_A);
1165 1520
1166 /* calculate blocking time */ 1521 /* calculate blocking time */
1522 {
1523 ev_tstamp waittime = 0.;
1524 ev_tstamp sleeptime = 0.;
1167 1525
1168 /* we only need this for !monotonic clock or timers, but as we basically 1526 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1169 always have timers, we just calculate it always */
1170#if EV_USE_MONOTONIC
1171 if (expect_true (have_monotonic))
1172 time_update_monotonic (EV_A);
1173 else
1174#endif
1175 { 1527 {
1176 ev_rt_now = ev_time (); 1528 /* update time to cancel out callback processing overhead */
1177 mn_now = ev_rt_now; 1529 time_update (EV_A_ 1e100);
1178 }
1179 1530
1180 if (flags & EVLOOP_NONBLOCK || idlecnt)
1181 block = 0.;
1182 else
1183 {
1184 block = MAX_BLOCKTIME; 1531 waittime = MAX_BLOCKTIME;
1185 1532
1186 if (timercnt) 1533 if (timercnt)
1187 { 1534 {
1188 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1535 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1189 if (block > to) block = to; 1536 if (waittime > to) waittime = to;
1190 } 1537 }
1191 1538
1192#if EV_PERIODICS 1539#if EV_PERIODIC_ENABLE
1193 if (periodiccnt) 1540 if (periodiccnt)
1194 { 1541 {
1195 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;
1196 if (block > to) block = to; 1543 if (waittime > to) waittime = to;
1197 } 1544 }
1198#endif 1545#endif
1199 1546
1200 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 }
1201 } 1560 }
1202 1561
1203 method_poll (EV_A_ block); 1562 ++loop_count;
1563 backend_poll (EV_A_ waittime);
1204 1564
1205 /* update ev_rt_now, do magic */ 1565 /* update ev_rt_now, do magic */
1206 time_update (EV_A); 1566 time_update (EV_A_ waittime + sleeptime);
1567 }
1207 1568
1208 /* queue pending timers and reschedule them */ 1569 /* queue pending timers and reschedule them */
1209 timers_reify (EV_A); /* relative timers called last */ 1570 timers_reify (EV_A); /* relative timers called last */
1210#if EV_PERIODICS 1571#if EV_PERIODIC_ENABLE
1211 periodics_reify (EV_A); /* absolute timers called first */ 1572 periodics_reify (EV_A); /* absolute timers called first */
1212#endif 1573#endif
1213 1574
1575#if EV_IDLE_ENABLE
1214 /* queue idle watchers unless io or timers are pending */ 1576 /* queue idle watchers unless other events are pending */
1215 if (idlecnt && !any_pending (EV_A)) 1577 idle_reify (EV_A);
1216 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1578#endif
1217 1579
1218 /* queue check watchers, to be executed first */ 1580 /* queue check watchers, to be executed first */
1219 if (checkcnt) 1581 if (expect_false (checkcnt))
1220 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1582 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1221 1583
1222 call_pending (EV_A); 1584 call_pending (EV_A);
1585
1223 } 1586 }
1224 while (activecnt && !loop_done); 1587 while (expect_true (activecnt && !loop_done));
1225 1588
1226 if (loop_done != 2) 1589 if (loop_done == EVUNLOOP_ONE)
1227 loop_done = 0; 1590 loop_done = EVUNLOOP_CANCEL;
1228} 1591}
1229 1592
1230void 1593void
1231ev_unloop (EV_P_ int how) 1594ev_unloop (EV_P_ int how)
1232{ 1595{
1233 loop_done = how; 1596 loop_done = how;
1234} 1597}
1235 1598
1236/*****************************************************************************/ 1599/*****************************************************************************/
1237 1600
1238inline void 1601void inline_size
1239wlist_add (WL *head, WL elem) 1602wlist_add (WL *head, WL elem)
1240{ 1603{
1241 elem->next = *head; 1604 elem->next = *head;
1242 *head = elem; 1605 *head = elem;
1243} 1606}
1244 1607
1245inline void 1608void inline_size
1246wlist_del (WL *head, WL elem) 1609wlist_del (WL *head, WL elem)
1247{ 1610{
1248 while (*head) 1611 while (*head)
1249 { 1612 {
1250 if (*head == elem) 1613 if (*head == elem)
… …
1255 1618
1256 head = &(*head)->next; 1619 head = &(*head)->next;
1257 } 1620 }
1258} 1621}
1259 1622
1260inline void 1623void inline_speed
1261ev_clear_pending (EV_P_ W w) 1624clear_pending (EV_P_ W w)
1262{ 1625{
1263 if (w->pending) 1626 if (w->pending)
1264 { 1627 {
1265 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1628 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1266 w->pending = 0; 1629 w->pending = 0;
1267 } 1630 }
1268} 1631}
1269 1632
1270inline 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
1271ev_start (EV_P_ W w, int active) 1660ev_start (EV_P_ W w, int active)
1272{ 1661{
1273 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1662 pri_adjust (EV_A_ w);
1274 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1275
1276 w->active = active; 1663 w->active = active;
1277 ev_ref (EV_A); 1664 ev_ref (EV_A);
1278} 1665}
1279 1666
1280inline void 1667void inline_size
1281ev_stop (EV_P_ W w) 1668ev_stop (EV_P_ W w)
1282{ 1669{
1283 ev_unref (EV_A); 1670 ev_unref (EV_A);
1284 w->active = 0; 1671 w->active = 0;
1285} 1672}
1286 1673
1287/*****************************************************************************/ 1674/*****************************************************************************/
1288 1675
1289void 1676void noinline
1290ev_io_start (EV_P_ struct ev_io *w) 1677ev_io_start (EV_P_ ev_io *w)
1291{ 1678{
1292 int fd = w->fd; 1679 int fd = w->fd;
1293 1680
1294 if (ev_is_active (w)) 1681 if (expect_false (ev_is_active (w)))
1295 return; 1682 return;
1296 1683
1297 assert (("ev_io_start called with negative fd", fd >= 0)); 1684 assert (("ev_io_start called with negative fd", fd >= 0));
1298 1685
1299 ev_start (EV_A_ (W)w, 1); 1686 ev_start (EV_A_ (W)w, 1);
1300 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1687 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1301 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1688 wlist_add (&anfds[fd].head, (WL)w);
1302 1689
1303 fd_change (EV_A_ fd); 1690 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1691 w->events &= ~EV_IOFDSET;
1304} 1692}
1305 1693
1306void 1694void noinline
1307ev_io_stop (EV_P_ struct ev_io *w) 1695ev_io_stop (EV_P_ ev_io *w)
1308{ 1696{
1309 ev_clear_pending (EV_A_ (W)w); 1697 clear_pending (EV_A_ (W)w);
1310 if (!ev_is_active (w)) 1698 if (expect_false (!ev_is_active (w)))
1311 return; 1699 return;
1312 1700
1313 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));
1314 1702
1315 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1703 wlist_del (&anfds[w->fd].head, (WL)w);
1316 ev_stop (EV_A_ (W)w); 1704 ev_stop (EV_A_ (W)w);
1317 1705
1318 fd_change (EV_A_ w->fd); 1706 fd_change (EV_A_ w->fd, 1);
1319} 1707}
1320 1708
1321void 1709void noinline
1322ev_timer_start (EV_P_ struct ev_timer *w) 1710ev_timer_start (EV_P_ ev_timer *w)
1711{
1712 if (expect_false (ev_is_active (w)))
1713 return;
1714
1715 ((WT)w)->at += mn_now;
1716
1717 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1718
1719 ev_start (EV_A_ (W)w, ++timercnt);
1720 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1721 timers [timercnt - 1] = (WT)w;
1722 upheap (timers, timercnt - 1);
1723
1724 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1725}
1726
1727void noinline
1728ev_timer_stop (EV_P_ ev_timer *w)
1729{
1730 clear_pending (EV_A_ (W)w);
1731 if (expect_false (!ev_is_active (w)))
1732 return;
1733
1734 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1735
1736 {
1737 int active = ((W)w)->active;
1738
1739 if (expect_true (--active < --timercnt))
1740 {
1741 timers [active] = timers [timercnt];
1742 adjustheap (timers, timercnt, active);
1743 }
1744 }
1745
1746 ((WT)w)->at -= mn_now;
1747
1748 ev_stop (EV_A_ (W)w);
1749}
1750
1751void noinline
1752ev_timer_again (EV_P_ ev_timer *w)
1323{ 1753{
1324 if (ev_is_active (w)) 1754 if (ev_is_active (w))
1325 return;
1326
1327 ((WT)w)->at += mn_now;
1328
1329 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1330
1331 ev_start (EV_A_ (W)w, ++timercnt);
1332 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1333 timers [timercnt - 1] = w;
1334 upheap ((WT *)timers, timercnt - 1);
1335
1336 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1337}
1338
1339void
1340ev_timer_stop (EV_P_ struct ev_timer *w)
1341{
1342 ev_clear_pending (EV_A_ (W)w);
1343 if (!ev_is_active (w))
1344 return;
1345
1346 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1347
1348 if (((W)w)->active < timercnt--)
1349 {
1350 timers [((W)w)->active - 1] = timers [timercnt];
1351 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1352 }
1353
1354 ((WT)w)->at -= mn_now;
1355
1356 ev_stop (EV_A_ (W)w);
1357}
1358
1359void
1360ev_timer_again (EV_P_ struct ev_timer *w)
1361{
1362 if (ev_is_active (w))
1363 { 1755 {
1364 if (w->repeat) 1756 if (w->repeat)
1757 {
1758 ((WT)w)->at = mn_now + w->repeat;
1365 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1759 adjustheap (timers, timercnt, ((W)w)->active - 1);
1760 }
1366 else 1761 else
1367 ev_timer_stop (EV_A_ w); 1762 ev_timer_stop (EV_A_ w);
1368 } 1763 }
1369 else if (w->repeat) 1764 else if (w->repeat)
1765 {
1766 w->at = w->repeat;
1370 ev_timer_start (EV_A_ w); 1767 ev_timer_start (EV_A_ w);
1768 }
1371} 1769}
1372 1770
1373#if EV_PERIODICS 1771#if EV_PERIODIC_ENABLE
1374void 1772void noinline
1375ev_periodic_start (EV_P_ struct ev_periodic *w) 1773ev_periodic_start (EV_P_ ev_periodic *w)
1376{ 1774{
1377 if (ev_is_active (w)) 1775 if (expect_false (ev_is_active (w)))
1378 return; 1776 return;
1379 1777
1380 if (w->reschedule_cb) 1778 if (w->reschedule_cb)
1381 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1779 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1382 else if (w->interval) 1780 else if (w->interval)
1383 { 1781 {
1384 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.));
1385 /* 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 */
1386 ((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;
1387 } 1785 }
1786 else
1787 ((WT)w)->at = w->offset;
1388 1788
1389 ev_start (EV_A_ (W)w, ++periodiccnt); 1789 ev_start (EV_A_ (W)w, ++periodiccnt);
1390 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1790 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1391 periodics [periodiccnt - 1] = w; 1791 periodics [periodiccnt - 1] = (WT)w;
1392 upheap ((WT *)periodics, periodiccnt - 1); 1792 upheap (periodics, periodiccnt - 1);
1393 1793
1394 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1794 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1395} 1795}
1396 1796
1397void 1797void noinline
1398ev_periodic_stop (EV_P_ struct ev_periodic *w) 1798ev_periodic_stop (EV_P_ ev_periodic *w)
1399{ 1799{
1400 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1401 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
1402 return; 1802 return;
1403 1803
1404 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1804 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1405 1805
1406 if (((W)w)->active < periodiccnt--) 1806 {
1807 int active = ((W)w)->active;
1808
1809 if (expect_true (--active < --periodiccnt))
1407 { 1810 {
1408 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1811 periodics [active] = periodics [periodiccnt];
1409 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1812 adjustheap (periodics, periodiccnt, active);
1410 } 1813 }
1814 }
1411 1815
1412 ev_stop (EV_A_ (W)w); 1816 ev_stop (EV_A_ (W)w);
1413} 1817}
1414 1818
1415void 1819void noinline
1416ev_periodic_again (EV_P_ struct ev_periodic *w) 1820ev_periodic_again (EV_P_ ev_periodic *w)
1417{ 1821{
1418 /* TODO: use adjustheap and recalculation */ 1822 /* TODO: use adjustheap and recalculation */
1419 ev_periodic_stop (EV_A_ w); 1823 ev_periodic_stop (EV_A_ w);
1420 ev_periodic_start (EV_A_ w); 1824 ev_periodic_start (EV_A_ w);
1421} 1825}
1422#endif 1826#endif
1423 1827
1424void
1425ev_idle_start (EV_P_ struct ev_idle *w)
1426{
1427 if (ev_is_active (w))
1428 return;
1429
1430 ev_start (EV_A_ (W)w, ++idlecnt);
1431 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1432 idles [idlecnt - 1] = w;
1433}
1434
1435void
1436ev_idle_stop (EV_P_ struct ev_idle *w)
1437{
1438 ev_clear_pending (EV_A_ (W)w);
1439 if (!ev_is_active (w))
1440 return;
1441
1442 idles [((W)w)->active - 1] = idles [--idlecnt];
1443 ev_stop (EV_A_ (W)w);
1444}
1445
1446void
1447ev_prepare_start (EV_P_ struct ev_prepare *w)
1448{
1449 if (ev_is_active (w))
1450 return;
1451
1452 ev_start (EV_A_ (W)w, ++preparecnt);
1453 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1454 prepares [preparecnt - 1] = w;
1455}
1456
1457void
1458ev_prepare_stop (EV_P_ struct ev_prepare *w)
1459{
1460 ev_clear_pending (EV_A_ (W)w);
1461 if (!ev_is_active (w))
1462 return;
1463
1464 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1465 ev_stop (EV_A_ (W)w);
1466}
1467
1468void
1469ev_check_start (EV_P_ struct ev_check *w)
1470{
1471 if (ev_is_active (w))
1472 return;
1473
1474 ev_start (EV_A_ (W)w, ++checkcnt);
1475 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1476 checks [checkcnt - 1] = w;
1477}
1478
1479void
1480ev_check_stop (EV_P_ struct ev_check *w)
1481{
1482 ev_clear_pending (EV_A_ (W)w);
1483 if (!ev_is_active (w))
1484 return;
1485
1486 checks [((W)w)->active - 1] = checks [--checkcnt];
1487 ev_stop (EV_A_ (W)w);
1488}
1489
1490#ifndef SA_RESTART 1828#ifndef SA_RESTART
1491# define SA_RESTART 0 1829# define SA_RESTART 0
1492#endif 1830#endif
1493 1831
1494void 1832void noinline
1495ev_signal_start (EV_P_ struct ev_signal *w) 1833ev_signal_start (EV_P_ ev_signal *w)
1496{ 1834{
1497#if EV_MULTIPLICITY 1835#if EV_MULTIPLICITY
1498 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1836 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1499#endif 1837#endif
1500 if (ev_is_active (w)) 1838 if (expect_false (ev_is_active (w)))
1501 return; 1839 return;
1502 1840
1503 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));
1504 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
1505 ev_start (EV_A_ (W)w, 1); 1857 ev_start (EV_A_ (W)w, 1);
1506 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1507 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1858 wlist_add (&signals [w->signum - 1].head, (WL)w);
1508 1859
1509 if (!((WL)w)->next) 1860 if (!((WL)w)->next)
1510 { 1861 {
1511#if WIN32 1862#if _WIN32
1512 signal (w->signum, sighandler); 1863 signal (w->signum, sighandler);
1513#else 1864#else
1514 struct sigaction sa; 1865 struct sigaction sa;
1515 sa.sa_handler = sighandler; 1866 sa.sa_handler = sighandler;
1516 sigfillset (&sa.sa_mask); 1867 sigfillset (&sa.sa_mask);
… …
1518 sigaction (w->signum, &sa, 0); 1869 sigaction (w->signum, &sa, 0);
1519#endif 1870#endif
1520 } 1871 }
1521} 1872}
1522 1873
1523void 1874void noinline
1524ev_signal_stop (EV_P_ struct ev_signal *w) 1875ev_signal_stop (EV_P_ ev_signal *w)
1525{ 1876{
1526 ev_clear_pending (EV_A_ (W)w); 1877 clear_pending (EV_A_ (W)w);
1527 if (!ev_is_active (w)) 1878 if (expect_false (!ev_is_active (w)))
1528 return; 1879 return;
1529 1880
1530 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1881 wlist_del (&signals [w->signum - 1].head, (WL)w);
1531 ev_stop (EV_A_ (W)w); 1882 ev_stop (EV_A_ (W)w);
1532 1883
1533 if (!signals [w->signum - 1].head) 1884 if (!signals [w->signum - 1].head)
1534 signal (w->signum, SIG_DFL); 1885 signal (w->signum, SIG_DFL);
1535} 1886}
1536 1887
1537void 1888void
1538ev_child_start (EV_P_ struct ev_child *w) 1889ev_child_start (EV_P_ ev_child *w)
1539{ 1890{
1540#if EV_MULTIPLICITY 1891#if EV_MULTIPLICITY
1541 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1892 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542#endif 1893#endif
1543 if (ev_is_active (w)) 1894 if (expect_false (ev_is_active (w)))
1544 return; 1895 return;
1545 1896
1546 ev_start (EV_A_ (W)w, 1); 1897 ev_start (EV_A_ (W)w, 1);
1547 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1898 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1548} 1899}
1549 1900
1550void 1901void
1551ev_child_stop (EV_P_ struct ev_child *w) 1902ev_child_stop (EV_P_ ev_child *w)
1552{ 1903{
1553 ev_clear_pending (EV_A_ (W)w); 1904 clear_pending (EV_A_ (W)w);
1554 if (ev_is_active (w)) 1905 if (expect_false (!ev_is_active (w)))
1555 return; 1906 return;
1556 1907
1557 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1908 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1558 ev_stop (EV_A_ (W)w); 1909 ev_stop (EV_A_ (W)w);
1559} 1910}
1560 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
1561/*****************************************************************************/ 2365/*****************************************************************************/
1562 2366
1563struct ev_once 2367struct ev_once
1564{ 2368{
1565 struct ev_io io; 2369 ev_io io;
1566 struct ev_timer to; 2370 ev_timer to;
1567 void (*cb)(int revents, void *arg); 2371 void (*cb)(int revents, void *arg);
1568 void *arg; 2372 void *arg;
1569}; 2373};
1570 2374
1571static void 2375static void
… …
1580 2384
1581 cb (revents, arg); 2385 cb (revents, arg);
1582} 2386}
1583 2387
1584static void 2388static void
1585once_cb_io (EV_P_ struct ev_io *w, int revents) 2389once_cb_io (EV_P_ ev_io *w, int revents)
1586{ 2390{
1587 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);
1588} 2392}
1589 2393
1590static void 2394static void
1591once_cb_to (EV_P_ struct ev_timer *w, int revents) 2395once_cb_to (EV_P_ ev_timer *w, int revents)
1592{ 2396{
1593 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);
1594} 2398}
1595 2399
1596void 2400void
1597ev_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)
1598{ 2402{
1599 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));
1600 2404
1601 if (!once) 2405 if (expect_false (!once))
2406 {
1602 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2407 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1603 else 2408 return;
1604 { 2409 }
2410
1605 once->cb = cb; 2411 once->cb = cb;
1606 once->arg = arg; 2412 once->arg = arg;
1607 2413
1608 ev_init (&once->io, once_cb_io); 2414 ev_init (&once->io, once_cb_io);
1609 if (fd >= 0) 2415 if (fd >= 0)
1610 { 2416 {
1611 ev_io_set (&once->io, fd, events); 2417 ev_io_set (&once->io, fd, events);
1612 ev_io_start (EV_A_ &once->io); 2418 ev_io_start (EV_A_ &once->io);
1613 } 2419 }
1614 2420
1615 ev_init (&once->to, once_cb_to); 2421 ev_init (&once->to, once_cb_to);
1616 if (timeout >= 0.) 2422 if (timeout >= 0.)
1617 { 2423 {
1618 ev_timer_set (&once->to, timeout, 0.); 2424 ev_timer_set (&once->to, timeout, 0.);
1619 ev_timer_start (EV_A_ &once->to); 2425 ev_timer_start (EV_A_ &once->to);
1620 }
1621 } 2426 }
1622} 2427}
2428
2429#if EV_MULTIPLICITY
2430 #include "ev_wrap.h"
2431#endif
1623 2432
1624#ifdef __cplusplus 2433#ifdef __cplusplus
1625} 2434}
1626#endif 2435#endif
1627 2436

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