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

Comparing libev/ev.c (file contents):
Revision 1.90 by root, Sun Nov 11 00:05:59 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 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
254inline ev_tstamp 396ev_tstamp
255ev_time (void) 397ev_time (void)
256{ 398{
257#if EV_USE_REALTIME 399#if EV_USE_REALTIME
258 struct timespec ts; 400 struct timespec ts;
259 clock_gettime (CLOCK_REALTIME, &ts); 401 clock_gettime (CLOCK_REALTIME, &ts);
… …
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 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
978
979 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
980 /* please fix it and tell me how to detect the fix */
981 flags &= ~EVBACKEND_EPOLL;
982
983 return flags;
984}
985
986unsigned int
987ev_backend (EV_P)
988{
989 return backend;
990}
991
992unsigned int
993ev_loop_count (EV_P)
994{
995 return loop_count;
996}
997
998void
999ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1000{
1001 io_blocktime = interval;
1002}
1003
1004void
1005ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1006{
1007 timeout_blocktime = interval;
1008}
1009
1010static void noinline
1011loop_init (EV_P_ unsigned int flags)
1012{
1013 if (!backend)
740 { 1014 {
741#if EV_USE_MONOTONIC 1015#if EV_USE_MONOTONIC
742 { 1016 {
743 struct timespec ts; 1017 struct timespec ts;
744 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1018 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
749 ev_rt_now = ev_time (); 1023 ev_rt_now = ev_time ();
750 mn_now = get_clock (); 1024 mn_now = get_clock ();
751 now_floor = mn_now; 1025 now_floor = mn_now;
752 rtmn_diff = ev_rt_now - mn_now; 1026 rtmn_diff = ev_rt_now - mn_now;
753 1027
754 if (methods == EVMETHOD_AUTO) 1028 io_blocktime = 0.;
755 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1029 timeout_blocktime = 0.;
1030
1031 /* pid check not overridable via env */
1032#ifndef _WIN32
1033 if (flags & EVFLAG_FORKCHECK)
1034 curpid = getpid ();
1035#endif
1036
1037 if (!(flags & EVFLAG_NOENV)
1038 && !enable_secure ()
1039 && getenv ("LIBEV_FLAGS"))
756 methods = atoi (getenv ("LIBEV_METHODS")); 1040 flags = atoi (getenv ("LIBEV_FLAGS"));
757 else
758 methods = EVMETHOD_ANY;
759 1041
760 method = 0; 1042 if (!(flags & 0x0000ffffUL))
1043 flags |= ev_recommended_backends ();
1044
1045 backend = 0;
1046 backend_fd = -1;
761#if EV_USE_WIN32 1047#if EV_USE_INOTIFY
762 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1048 fs_fd = -2;
1049#endif
1050
1051#if EV_USE_PORT
1052 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763#endif 1053#endif
764#if EV_USE_KQUEUE 1054#if EV_USE_KQUEUE
765 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1055 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766#endif 1056#endif
767#if EV_USE_EPOLL 1057#if EV_USE_EPOLL
768 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1058 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769#endif 1059#endif
770#if EV_USE_POLL 1060#if EV_USE_POLL
771 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1061 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772#endif 1062#endif
773#if EV_USE_SELECT 1063#if EV_USE_SELECT
774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1064 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775#endif 1065#endif
776 1066
777 ev_init (&sigev, sigcb); 1067 ev_init (&sigev, sigcb);
778 ev_set_priority (&sigev, EV_MAXPRI); 1068 ev_set_priority (&sigev, EV_MAXPRI);
779 } 1069 }
780} 1070}
781 1071
782void 1072static void noinline
783loop_destroy (EV_P) 1073loop_destroy (EV_P)
784{ 1074{
785 int i; 1075 int i;
786 1076
787#if EV_USE_WIN32 1077#if EV_USE_INOTIFY
788 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1078 if (fs_fd >= 0)
1079 close (fs_fd);
1080#endif
1081
1082 if (backend_fd >= 0)
1083 close (backend_fd);
1084
1085#if EV_USE_PORT
1086 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789#endif 1087#endif
790#if EV_USE_KQUEUE 1088#if EV_USE_KQUEUE
791 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1089 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792#endif 1090#endif
793#if EV_USE_EPOLL 1091#if EV_USE_EPOLL
794 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1092 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795#endif 1093#endif
796#if EV_USE_POLL 1094#if EV_USE_POLL
797 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1095 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798#endif 1096#endif
799#if EV_USE_SELECT 1097#if EV_USE_SELECT
800 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1098 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801#endif 1099#endif
802 1100
803 for (i = NUMPRI; i--; ) 1101 for (i = NUMPRI; i--; )
1102 {
804 array_free (pending, [i]); 1103 array_free (pending, [i]);
1104#if EV_IDLE_ENABLE
1105 array_free (idle, [i]);
1106#endif
1107 }
1108
1109 ev_free (anfds); anfdmax = 0;
805 1110
806 /* have to use the microsoft-never-gets-it-right macro */ 1111 /* have to use the microsoft-never-gets-it-right macro */
807 array_free_microshit (fdchange); 1112 array_free (fdchange, EMPTY);
808 array_free_microshit (timer); 1113 array_free (timer, EMPTY);
809 array_free_microshit (periodic); 1114#if EV_PERIODIC_ENABLE
810 array_free_microshit (idle); 1115 array_free (periodic, EMPTY);
811 array_free_microshit (prepare); 1116#endif
812 array_free_microshit (check); 1117#if EV_FORK_ENABLE
1118 array_free (fork, EMPTY);
1119#endif
1120 array_free (prepare, EMPTY);
1121 array_free (check, EMPTY);
813 1122
814 method = 0; 1123 backend = 0;
815} 1124}
816 1125
817static void 1126void inline_size infy_fork (EV_P);
1127
1128void inline_size
818loop_fork (EV_P) 1129loop_fork (EV_P)
819{ 1130{
1131#if EV_USE_PORT
1132 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1133#endif
1134#if EV_USE_KQUEUE
1135 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1136#endif
820#if EV_USE_EPOLL 1137#if EV_USE_EPOLL
821 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1138 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822#endif 1139#endif
823#if EV_USE_KQUEUE 1140#if EV_USE_INOTIFY
824 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1141 infy_fork (EV_A);
825#endif 1142#endif
826 1143
827 if (ev_is_active (&sigev)) 1144 if (ev_is_active (&sigev))
828 { 1145 {
829 /* default loop */ 1146 /* default loop */
… …
842 postfork = 0; 1159 postfork = 0;
843} 1160}
844 1161
845#if EV_MULTIPLICITY 1162#if EV_MULTIPLICITY
846struct ev_loop * 1163struct ev_loop *
847ev_loop_new (int methods) 1164ev_loop_new (unsigned int flags)
848{ 1165{
849 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1166 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
850 1167
851 memset (loop, 0, sizeof (struct ev_loop)); 1168 memset (loop, 0, sizeof (struct ev_loop));
852 1169
853 loop_init (EV_A_ methods); 1170 loop_init (EV_A_ flags);
854 1171
855 if (ev_method (EV_A)) 1172 if (ev_backend (EV_A))
856 return loop; 1173 return loop;
857 1174
858 return 0; 1175 return 0;
859} 1176}
860 1177
… …
873 1190
874#endif 1191#endif
875 1192
876#if EV_MULTIPLICITY 1193#if EV_MULTIPLICITY
877struct ev_loop * 1194struct ev_loop *
1195ev_default_loop_init (unsigned int flags)
878#else 1196#else
879int 1197int
1198ev_default_loop (unsigned int flags)
880#endif 1199#endif
881ev_default_loop (int methods)
882{ 1200{
883 if (sigpipe [0] == sigpipe [1]) 1201 if (sigpipe [0] == sigpipe [1])
884 if (pipe (sigpipe)) 1202 if (pipe (sigpipe))
885 return 0; 1203 return 0;
886 1204
887 if (!default_loop) 1205 if (!ev_default_loop_ptr)
888 { 1206 {
889#if EV_MULTIPLICITY 1207#if EV_MULTIPLICITY
890 struct ev_loop *loop = default_loop = &default_loop_struct; 1208 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891#else 1209#else
892 default_loop = 1; 1210 ev_default_loop_ptr = 1;
893#endif 1211#endif
894 1212
895 loop_init (EV_A_ methods); 1213 loop_init (EV_A_ flags);
896 1214
897 if (ev_method (EV_A)) 1215 if (ev_backend (EV_A))
898 { 1216 {
899 siginit (EV_A); 1217 siginit (EV_A);
900 1218
901#ifndef WIN32 1219#ifndef _WIN32
902 ev_signal_init (&childev, childcb, SIGCHLD); 1220 ev_signal_init (&childev, childcb, SIGCHLD);
903 ev_set_priority (&childev, EV_MAXPRI); 1221 ev_set_priority (&childev, EV_MAXPRI);
904 ev_signal_start (EV_A_ &childev); 1222 ev_signal_start (EV_A_ &childev);
905 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1223 ev_unref (EV_A); /* child watcher should not keep loop alive */
906#endif 1224#endif
907 } 1225 }
908 else 1226 else
909 default_loop = 0; 1227 ev_default_loop_ptr = 0;
910 } 1228 }
911 1229
912 return default_loop; 1230 return ev_default_loop_ptr;
913} 1231}
914 1232
915void 1233void
916ev_default_destroy (void) 1234ev_default_destroy (void)
917{ 1235{
918#if EV_MULTIPLICITY 1236#if EV_MULTIPLICITY
919 struct ev_loop *loop = default_loop; 1237 struct ev_loop *loop = ev_default_loop_ptr;
920#endif 1238#endif
921 1239
922#ifndef WIN32 1240#ifndef _WIN32
923 ev_ref (EV_A); /* child watcher */ 1241 ev_ref (EV_A); /* child watcher */
924 ev_signal_stop (EV_A_ &childev); 1242 ev_signal_stop (EV_A_ &childev);
925#endif 1243#endif
926 1244
927 ev_ref (EV_A); /* signal watcher */ 1245 ev_ref (EV_A); /* signal watcher */
… …
935 1253
936void 1254void
937ev_default_fork (void) 1255ev_default_fork (void)
938{ 1256{
939#if EV_MULTIPLICITY 1257#if EV_MULTIPLICITY
940 struct ev_loop *loop = default_loop; 1258 struct ev_loop *loop = ev_default_loop_ptr;
941#endif 1259#endif
942 1260
943 if (method) 1261 if (backend)
944 postfork = 1; 1262 postfork = 1;
945} 1263}
946 1264
947/*****************************************************************************/ 1265/*****************************************************************************/
948 1266
949static int 1267void
950any_pending (EV_P) 1268ev_invoke (EV_P_ void *w, int revents)
951{ 1269{
952 int pri; 1270 EV_CB_INVOKE ((W)w, revents);
953
954 for (pri = NUMPRI; pri--; )
955 if (pendingcnt [pri])
956 return 1;
957
958 return 0;
959} 1271}
960 1272
961static void 1273void inline_speed
962call_pending (EV_P) 1274call_pending (EV_P)
963{ 1275{
964 int pri; 1276 int pri;
965 1277
966 for (pri = NUMPRI; pri--; ) 1278 for (pri = NUMPRI; pri--; )
967 while (pendingcnt [pri]) 1279 while (pendingcnt [pri])
968 { 1280 {
969 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1281 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970 1282
971 if (p->w) 1283 if (expect_true (p->w))
972 { 1284 {
1285 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1286
973 p->w->pending = 0; 1287 p->w->pending = 0;
974 EV_CB_INVOKE (p->w, p->events); 1288 EV_CB_INVOKE (p->w, p->events);
975 } 1289 }
976 } 1290 }
977} 1291}
978 1292
979static void 1293void inline_size
980timers_reify (EV_P) 1294timers_reify (EV_P)
981{ 1295{
982 while (timercnt && ((WT)timers [0])->at <= mn_now) 1296 while (timercnt && ((WT)timers [0])->at <= mn_now)
983 { 1297 {
984 struct ev_timer *w = timers [0]; 1298 ev_timer *w = (ev_timer *)timers [0];
985 1299
986 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1300 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987 1301
988 /* first reschedule or stop timer */ 1302 /* first reschedule or stop timer */
989 if (w->repeat) 1303 if (w->repeat)
990 { 1304 {
991 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1305 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
992 1306
993 ((WT)w)->at += w->repeat; 1307 ((WT)w)->at += w->repeat;
994 if (((WT)w)->at < mn_now) 1308 if (((WT)w)->at < mn_now)
995 ((WT)w)->at = mn_now; 1309 ((WT)w)->at = mn_now;
996 1310
997 downheap ((WT *)timers, timercnt, 0); 1311 downheap (timers, timercnt, 0);
998 } 1312 }
999 else 1313 else
1000 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1314 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1001 1315
1002 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1316 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1003 } 1317 }
1004} 1318}
1005 1319
1006static void 1320#if EV_PERIODIC_ENABLE
1321void inline_size
1007periodics_reify (EV_P) 1322periodics_reify (EV_P)
1008{ 1323{
1009 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1324 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1010 { 1325 {
1011 struct ev_periodic *w = periodics [0]; 1326 ev_periodic *w = (ev_periodic *)periodics [0];
1012 1327
1013 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1328 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1014 1329
1015 /* first reschedule or stop timer */ 1330 /* first reschedule or stop timer */
1016 if (w->reschedule_cb) 1331 if (w->reschedule_cb)
1017 { 1332 {
1018 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1333 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1019
1020 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1334 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1021 downheap ((WT *)periodics, periodiccnt, 0); 1335 downheap (periodics, periodiccnt, 0);
1022 } 1336 }
1023 else if (w->interval) 1337 else if (w->interval)
1024 { 1338 {
1025 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1339 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1340 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1026 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1341 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1027 downheap ((WT *)periodics, periodiccnt, 0); 1342 downheap (periodics, periodiccnt, 0);
1028 } 1343 }
1029 else 1344 else
1030 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1345 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1031 1346
1032 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1347 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1033 } 1348 }
1034} 1349}
1035 1350
1036static void 1351static void noinline
1037periodics_reschedule (EV_P) 1352periodics_reschedule (EV_P)
1038{ 1353{
1039 int i; 1354 int i;
1040 1355
1041 /* adjust periodics after time jump */ 1356 /* adjust periodics after time jump */
1042 for (i = 0; i < periodiccnt; ++i) 1357 for (i = 0; i < periodiccnt; ++i)
1043 { 1358 {
1044 struct ev_periodic *w = periodics [i]; 1359 ev_periodic *w = (ev_periodic *)periodics [i];
1045 1360
1046 if (w->reschedule_cb) 1361 if (w->reschedule_cb)
1047 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1362 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1048 else if (w->interval) 1363 else if (w->interval)
1049 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1364 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1050 } 1365 }
1051 1366
1052 /* now rebuild the heap */ 1367 /* now rebuild the heap */
1053 for (i = periodiccnt >> 1; i--; ) 1368 for (i = periodiccnt >> 1; i--; )
1054 downheap ((WT *)periodics, periodiccnt, i); 1369 downheap (periodics, periodiccnt, i);
1055} 1370}
1371#endif
1056 1372
1057inline int 1373#if EV_IDLE_ENABLE
1058time_update_monotonic (EV_P) 1374void inline_size
1375idle_reify (EV_P)
1059{ 1376{
1377 if (expect_false (idleall))
1378 {
1379 int pri;
1380
1381 for (pri = NUMPRI; pri--; )
1382 {
1383 if (pendingcnt [pri])
1384 break;
1385
1386 if (idlecnt [pri])
1387 {
1388 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1389 break;
1390 }
1391 }
1392 }
1393}
1394#endif
1395
1396void inline_speed
1397time_update (EV_P_ ev_tstamp max_block)
1398{
1399 int i;
1400
1401#if EV_USE_MONOTONIC
1402 if (expect_true (have_monotonic))
1403 {
1404 ev_tstamp odiff = rtmn_diff;
1405
1060 mn_now = get_clock (); 1406 mn_now = get_clock ();
1061 1407
1408 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1409 /* interpolate in the meantime */
1062 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1410 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1063 { 1411 {
1064 ev_rt_now = rtmn_diff + mn_now; 1412 ev_rt_now = rtmn_diff + mn_now;
1065 return 0; 1413 return;
1066 } 1414 }
1067 else 1415
1068 {
1069 now_floor = mn_now; 1416 now_floor = mn_now;
1070 ev_rt_now = ev_time (); 1417 ev_rt_now = ev_time ();
1071 return 1;
1072 }
1073}
1074 1418
1075static void 1419 /* loop a few times, before making important decisions.
1076time_update (EV_P) 1420 * on the choice of "4": one iteration isn't enough,
1077{ 1421 * in case we get preempted during the calls to
1078 int i; 1422 * ev_time and get_clock. a second call is almost guaranteed
1079 1423 * to succeed in that case, though. and looping a few more times
1080#if EV_USE_MONOTONIC 1424 * doesn't hurt either as we only do this on time-jumps or
1081 if (expect_true (have_monotonic)) 1425 * in the unlikely event of having been preempted here.
1082 { 1426 */
1083 if (time_update_monotonic (EV_A)) 1427 for (i = 4; --i; )
1084 { 1428 {
1085 ev_tstamp odiff = rtmn_diff;
1086
1087 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1088 {
1089 rtmn_diff = ev_rt_now - mn_now; 1429 rtmn_diff = ev_rt_now - mn_now;
1090 1430
1091 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1431 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1092 return; /* all is well */ 1432 return; /* all is well */
1093 1433
1094 ev_rt_now = ev_time (); 1434 ev_rt_now = ev_time ();
1095 mn_now = get_clock (); 1435 mn_now = get_clock ();
1096 now_floor = mn_now; 1436 now_floor = mn_now;
1097 } 1437 }
1098 1438
1439# if EV_PERIODIC_ENABLE
1440 periodics_reschedule (EV_A);
1441# endif
1442 /* no timer adjustment, as the monotonic clock doesn't jump */
1443 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1444 }
1445 else
1446#endif
1447 {
1448 ev_rt_now = ev_time ();
1449
1450 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1451 {
1452#if EV_PERIODIC_ENABLE
1099 periodics_reschedule (EV_A); 1453 periodics_reschedule (EV_A);
1100 /* no timer adjustment, as the monotonic clock doesn't jump */
1101 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1102 }
1103 }
1104 else
1105#endif 1454#endif
1106 {
1107 ev_rt_now = ev_time ();
1108
1109 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1110 {
1111 periodics_reschedule (EV_A);
1112
1113 /* adjust timers. this is easy, as the offset is the same for all */ 1455 /* adjust timers. this is easy, as the offset is the same for all of them */
1114 for (i = 0; i < timercnt; ++i) 1456 for (i = 0; i < timercnt; ++i)
1115 ((WT)timers [i])->at += ev_rt_now - mn_now; 1457 ((WT)timers [i])->at += ev_rt_now - mn_now;
1116 } 1458 }
1117 1459
1118 mn_now = ev_rt_now; 1460 mn_now = ev_rt_now;
… …
1134static int loop_done; 1476static int loop_done;
1135 1477
1136void 1478void
1137ev_loop (EV_P_ int flags) 1479ev_loop (EV_P_ int flags)
1138{ 1480{
1139 double block;
1140 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1481 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1482 ? EVUNLOOP_ONE
1483 : EVUNLOOP_CANCEL;
1484
1485 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1141 1486
1142 do 1487 do
1143 { 1488 {
1489#ifndef _WIN32
1490 if (expect_false (curpid)) /* penalise the forking check even more */
1491 if (expect_false (getpid () != curpid))
1492 {
1493 curpid = getpid ();
1494 postfork = 1;
1495 }
1496#endif
1497
1498#if EV_FORK_ENABLE
1499 /* we might have forked, so queue fork handlers */
1500 if (expect_false (postfork))
1501 if (forkcnt)
1502 {
1503 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1504 call_pending (EV_A);
1505 }
1506#endif
1507
1144 /* queue check watchers (and execute them) */ 1508 /* queue prepare watchers (and execute them) */
1145 if (expect_false (preparecnt)) 1509 if (expect_false (preparecnt))
1146 { 1510 {
1147 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1511 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1148 call_pending (EV_A); 1512 call_pending (EV_A);
1149 } 1513 }
1150 1514
1515 if (expect_false (!activecnt))
1516 break;
1517
1151 /* we might have forked, so reify kernel state if necessary */ 1518 /* we might have forked, so reify kernel state if necessary */
1152 if (expect_false (postfork)) 1519 if (expect_false (postfork))
1153 loop_fork (EV_A); 1520 loop_fork (EV_A);
1154 1521
1155 /* update fd-related kernel structures */ 1522 /* update fd-related kernel structures */
1156 fd_reify (EV_A); 1523 fd_reify (EV_A);
1157 1524
1158 /* calculate blocking time */ 1525 /* calculate blocking time */
1526 {
1527 ev_tstamp waittime = 0.;
1528 ev_tstamp sleeptime = 0.;
1159 1529
1160 /* we only need this for !monotonic clock or timers, but as we basically 1530 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1161 always have timers, we just calculate it always */
1162#if EV_USE_MONOTONIC
1163 if (expect_true (have_monotonic))
1164 time_update_monotonic (EV_A);
1165 else
1166#endif
1167 { 1531 {
1168 ev_rt_now = ev_time (); 1532 /* update time to cancel out callback processing overhead */
1169 mn_now = ev_rt_now; 1533 time_update (EV_A_ 1e100);
1170 }
1171 1534
1172 if (flags & EVLOOP_NONBLOCK || idlecnt)
1173 block = 0.;
1174 else
1175 {
1176 block = MAX_BLOCKTIME; 1535 waittime = MAX_BLOCKTIME;
1177 1536
1178 if (timercnt) 1537 if (timercnt)
1179 { 1538 {
1180 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1539 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1181 if (block > to) block = to; 1540 if (waittime > to) waittime = to;
1182 } 1541 }
1183 1542
1543#if EV_PERIODIC_ENABLE
1184 if (periodiccnt) 1544 if (periodiccnt)
1185 { 1545 {
1186 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1546 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1187 if (block > to) block = to; 1547 if (waittime > to) waittime = to;
1188 } 1548 }
1549#endif
1189 1550
1190 if (block < 0.) block = 0.; 1551 if (expect_false (waittime < timeout_blocktime))
1552 waittime = timeout_blocktime;
1553
1554 sleeptime = waittime - backend_fudge;
1555
1556 if (expect_true (sleeptime > io_blocktime))
1557 sleeptime = io_blocktime;
1558
1559 if (sleeptime)
1560 {
1561 ev_sleep (sleeptime);
1562 waittime -= sleeptime;
1563 }
1191 } 1564 }
1192 1565
1193 method_poll (EV_A_ block); 1566 ++loop_count;
1567 backend_poll (EV_A_ waittime);
1194 1568
1195 /* update ev_rt_now, do magic */ 1569 /* update ev_rt_now, do magic */
1196 time_update (EV_A); 1570 time_update (EV_A_ waittime + sleeptime);
1571 }
1197 1572
1198 /* queue pending timers and reschedule them */ 1573 /* queue pending timers and reschedule them */
1199 timers_reify (EV_A); /* relative timers called last */ 1574 timers_reify (EV_A); /* relative timers called last */
1575#if EV_PERIODIC_ENABLE
1200 periodics_reify (EV_A); /* absolute timers called first */ 1576 periodics_reify (EV_A); /* absolute timers called first */
1577#endif
1201 1578
1579#if EV_IDLE_ENABLE
1202 /* queue idle watchers unless io or timers are pending */ 1580 /* queue idle watchers unless other events are pending */
1203 if (idlecnt && !any_pending (EV_A)) 1581 idle_reify (EV_A);
1204 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1582#endif
1205 1583
1206 /* queue check watchers, to be executed first */ 1584 /* queue check watchers, to be executed first */
1207 if (checkcnt) 1585 if (expect_false (checkcnt))
1208 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1586 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1209 1587
1210 call_pending (EV_A); 1588 call_pending (EV_A);
1589
1211 } 1590 }
1212 while (activecnt && !loop_done); 1591 while (expect_true (activecnt && !loop_done));
1213 1592
1214 if (loop_done != 2) 1593 if (loop_done == EVUNLOOP_ONE)
1215 loop_done = 0; 1594 loop_done = EVUNLOOP_CANCEL;
1216} 1595}
1217 1596
1218void 1597void
1219ev_unloop (EV_P_ int how) 1598ev_unloop (EV_P_ int how)
1220{ 1599{
1221 loop_done = how; 1600 loop_done = how;
1222} 1601}
1223 1602
1224/*****************************************************************************/ 1603/*****************************************************************************/
1225 1604
1226inline void 1605void inline_size
1227wlist_add (WL *head, WL elem) 1606wlist_add (WL *head, WL elem)
1228{ 1607{
1229 elem->next = *head; 1608 elem->next = *head;
1230 *head = elem; 1609 *head = elem;
1231} 1610}
1232 1611
1233inline void 1612void inline_size
1234wlist_del (WL *head, WL elem) 1613wlist_del (WL *head, WL elem)
1235{ 1614{
1236 while (*head) 1615 while (*head)
1237 { 1616 {
1238 if (*head == elem) 1617 if (*head == elem)
… …
1243 1622
1244 head = &(*head)->next; 1623 head = &(*head)->next;
1245 } 1624 }
1246} 1625}
1247 1626
1248inline void 1627void inline_speed
1249ev_clear_pending (EV_P_ W w) 1628clear_pending (EV_P_ W w)
1250{ 1629{
1251 if (w->pending) 1630 if (w->pending)
1252 { 1631 {
1253 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1632 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1254 w->pending = 0; 1633 w->pending = 0;
1255 } 1634 }
1256} 1635}
1257 1636
1258inline void 1637int
1638ev_clear_pending (EV_P_ void *w)
1639{
1640 W w_ = (W)w;
1641 int pending = w_->pending;
1642
1643 if (expect_true (pending))
1644 {
1645 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1646 w_->pending = 0;
1647 p->w = 0;
1648 return p->events;
1649 }
1650 else
1651 return 0;
1652}
1653
1654void inline_size
1655pri_adjust (EV_P_ W w)
1656{
1657 int pri = w->priority;
1658 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1659 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1660 w->priority = pri;
1661}
1662
1663void inline_speed
1259ev_start (EV_P_ W w, int active) 1664ev_start (EV_P_ W w, int active)
1260{ 1665{
1261 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1666 pri_adjust (EV_A_ w);
1262 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1263
1264 w->active = active; 1667 w->active = active;
1265 ev_ref (EV_A); 1668 ev_ref (EV_A);
1266} 1669}
1267 1670
1268inline void 1671void inline_size
1269ev_stop (EV_P_ W w) 1672ev_stop (EV_P_ W w)
1270{ 1673{
1271 ev_unref (EV_A); 1674 ev_unref (EV_A);
1272 w->active = 0; 1675 w->active = 0;
1273} 1676}
1274 1677
1275/*****************************************************************************/ 1678/*****************************************************************************/
1276 1679
1277void 1680void noinline
1278ev_io_start (EV_P_ struct ev_io *w) 1681ev_io_start (EV_P_ ev_io *w)
1279{ 1682{
1280 int fd = w->fd; 1683 int fd = w->fd;
1281 1684
1282 if (ev_is_active (w)) 1685 if (expect_false (ev_is_active (w)))
1283 return; 1686 return;
1284 1687
1285 assert (("ev_io_start called with negative fd", fd >= 0)); 1688 assert (("ev_io_start called with negative fd", fd >= 0));
1286 1689
1287 ev_start (EV_A_ (W)w, 1); 1690 ev_start (EV_A_ (W)w, 1);
1288 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1691 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1289 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1692 wlist_add (&anfds[fd].head, (WL)w);
1290 1693
1291 fd_change (EV_A_ fd); 1694 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1695 w->events &= ~EV_IOFDSET;
1292} 1696}
1293 1697
1294void 1698void noinline
1295ev_io_stop (EV_P_ struct ev_io *w) 1699ev_io_stop (EV_P_ ev_io *w)
1296{ 1700{
1297 ev_clear_pending (EV_A_ (W)w); 1701 clear_pending (EV_A_ (W)w);
1298 if (!ev_is_active (w)) 1702 if (expect_false (!ev_is_active (w)))
1299 return; 1703 return;
1300 1704
1301 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1705 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1302 1706
1303 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1707 wlist_del (&anfds[w->fd].head, (WL)w);
1304 ev_stop (EV_A_ (W)w); 1708 ev_stop (EV_A_ (W)w);
1305 1709
1306 fd_change (EV_A_ w->fd); 1710 fd_change (EV_A_ w->fd, 1);
1307} 1711}
1308 1712
1309void 1713void noinline
1310ev_timer_start (EV_P_ struct ev_timer *w) 1714ev_timer_start (EV_P_ ev_timer *w)
1715{
1716 if (expect_false (ev_is_active (w)))
1717 return;
1718
1719 ((WT)w)->at += mn_now;
1720
1721 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1722
1723 ev_start (EV_A_ (W)w, ++timercnt);
1724 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1725 timers [timercnt - 1] = (WT)w;
1726 upheap (timers, timercnt - 1);
1727
1728 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1729}
1730
1731void noinline
1732ev_timer_stop (EV_P_ ev_timer *w)
1733{
1734 clear_pending (EV_A_ (W)w);
1735 if (expect_false (!ev_is_active (w)))
1736 return;
1737
1738 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1739
1740 {
1741 int active = ((W)w)->active;
1742
1743 if (expect_true (--active < --timercnt))
1744 {
1745 timers [active] = timers [timercnt];
1746 adjustheap (timers, timercnt, active);
1747 }
1748 }
1749
1750 ((WT)w)->at -= mn_now;
1751
1752 ev_stop (EV_A_ (W)w);
1753}
1754
1755void noinline
1756ev_timer_again (EV_P_ ev_timer *w)
1311{ 1757{
1312 if (ev_is_active (w)) 1758 if (ev_is_active (w))
1313 return;
1314
1315 ((WT)w)->at += mn_now;
1316
1317 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1318
1319 ev_start (EV_A_ (W)w, ++timercnt);
1320 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1321 timers [timercnt - 1] = w;
1322 upheap ((WT *)timers, timercnt - 1);
1323
1324 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1325}
1326
1327void
1328ev_timer_stop (EV_P_ struct ev_timer *w)
1329{
1330 ev_clear_pending (EV_A_ (W)w);
1331 if (!ev_is_active (w))
1332 return;
1333
1334 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1335
1336 if (((W)w)->active < timercnt--)
1337 {
1338 timers [((W)w)->active - 1] = timers [timercnt];
1339 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1340 }
1341
1342 ((WT)w)->at = w->repeat;
1343
1344 ev_stop (EV_A_ (W)w);
1345}
1346
1347void
1348ev_timer_again (EV_P_ struct ev_timer *w)
1349{
1350 if (ev_is_active (w))
1351 { 1759 {
1352 if (w->repeat) 1760 if (w->repeat)
1761 {
1762 ((WT)w)->at = mn_now + w->repeat;
1353 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1763 adjustheap (timers, timercnt, ((W)w)->active - 1);
1764 }
1354 else 1765 else
1355 ev_timer_stop (EV_A_ w); 1766 ev_timer_stop (EV_A_ w);
1356 } 1767 }
1357 else if (w->repeat) 1768 else if (w->repeat)
1769 {
1770 w->at = w->repeat;
1358 ev_timer_start (EV_A_ w); 1771 ev_timer_start (EV_A_ w);
1772 }
1359} 1773}
1360 1774
1361void 1775#if EV_PERIODIC_ENABLE
1776void noinline
1362ev_periodic_start (EV_P_ struct ev_periodic *w) 1777ev_periodic_start (EV_P_ ev_periodic *w)
1363{ 1778{
1364 if (ev_is_active (w)) 1779 if (expect_false (ev_is_active (w)))
1365 return; 1780 return;
1366 1781
1367 if (w->reschedule_cb) 1782 if (w->reschedule_cb)
1368 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1783 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1369 else if (w->interval) 1784 else if (w->interval)
1370 { 1785 {
1371 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1786 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1372 /* this formula differs from the one in periodic_reify because we do not always round up */ 1787 /* this formula differs from the one in periodic_reify because we do not always round up */
1373 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1788 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1374 } 1789 }
1790 else
1791 ((WT)w)->at = w->offset;
1375 1792
1376 ev_start (EV_A_ (W)w, ++periodiccnt); 1793 ev_start (EV_A_ (W)w, ++periodiccnt);
1377 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1794 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1378 periodics [periodiccnt - 1] = w; 1795 periodics [periodiccnt - 1] = (WT)w;
1379 upheap ((WT *)periodics, periodiccnt - 1); 1796 upheap (periodics, periodiccnt - 1);
1380 1797
1381 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1798 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1382} 1799}
1383 1800
1384void 1801void noinline
1385ev_periodic_stop (EV_P_ struct ev_periodic *w) 1802ev_periodic_stop (EV_P_ ev_periodic *w)
1386{ 1803{
1387 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1388 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1389 return; 1806 return;
1390 1807
1391 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1808 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1392 1809
1393 if (((W)w)->active < periodiccnt--) 1810 {
1811 int active = ((W)w)->active;
1812
1813 if (expect_true (--active < --periodiccnt))
1394 { 1814 {
1395 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1815 periodics [active] = periodics [periodiccnt];
1396 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1816 adjustheap (periodics, periodiccnt, active);
1397 } 1817 }
1818 }
1398 1819
1399 ev_stop (EV_A_ (W)w); 1820 ev_stop (EV_A_ (W)w);
1400} 1821}
1401 1822
1402void 1823void noinline
1403ev_periodic_again (EV_P_ struct ev_periodic *w) 1824ev_periodic_again (EV_P_ ev_periodic *w)
1404{ 1825{
1405 /* TODO: use adjustheap and recalculation */ 1826 /* TODO: use adjustheap and recalculation */
1406 ev_periodic_stop (EV_A_ w); 1827 ev_periodic_stop (EV_A_ w);
1407 ev_periodic_start (EV_A_ w); 1828 ev_periodic_start (EV_A_ w);
1408} 1829}
1409 1830#endif
1410void
1411ev_idle_start (EV_P_ struct ev_idle *w)
1412{
1413 if (ev_is_active (w))
1414 return;
1415
1416 ev_start (EV_A_ (W)w, ++idlecnt);
1417 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1418 idles [idlecnt - 1] = w;
1419}
1420
1421void
1422ev_idle_stop (EV_P_ struct ev_idle *w)
1423{
1424 ev_clear_pending (EV_A_ (W)w);
1425 if (ev_is_active (w))
1426 return;
1427
1428 idles [((W)w)->active - 1] = idles [--idlecnt];
1429 ev_stop (EV_A_ (W)w);
1430}
1431
1432void
1433ev_prepare_start (EV_P_ struct ev_prepare *w)
1434{
1435 if (ev_is_active (w))
1436 return;
1437
1438 ev_start (EV_A_ (W)w, ++preparecnt);
1439 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1440 prepares [preparecnt - 1] = w;
1441}
1442
1443void
1444ev_prepare_stop (EV_P_ struct ev_prepare *w)
1445{
1446 ev_clear_pending (EV_A_ (W)w);
1447 if (ev_is_active (w))
1448 return;
1449
1450 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1451 ev_stop (EV_A_ (W)w);
1452}
1453
1454void
1455ev_check_start (EV_P_ struct ev_check *w)
1456{
1457 if (ev_is_active (w))
1458 return;
1459
1460 ev_start (EV_A_ (W)w, ++checkcnt);
1461 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1462 checks [checkcnt - 1] = w;
1463}
1464
1465void
1466ev_check_stop (EV_P_ struct ev_check *w)
1467{
1468 ev_clear_pending (EV_A_ (W)w);
1469 if (ev_is_active (w))
1470 return;
1471
1472 checks [((W)w)->active - 1] = checks [--checkcnt];
1473 ev_stop (EV_A_ (W)w);
1474}
1475 1831
1476#ifndef SA_RESTART 1832#ifndef SA_RESTART
1477# define SA_RESTART 0 1833# define SA_RESTART 0
1478#endif 1834#endif
1479 1835
1480void 1836void noinline
1481ev_signal_start (EV_P_ struct ev_signal *w) 1837ev_signal_start (EV_P_ ev_signal *w)
1482{ 1838{
1483#if EV_MULTIPLICITY 1839#if EV_MULTIPLICITY
1484 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1840 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1485#endif 1841#endif
1486 if (ev_is_active (w)) 1842 if (expect_false (ev_is_active (w)))
1487 return; 1843 return;
1488 1844
1489 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1845 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1490 1846
1847 {
1848#ifndef _WIN32
1849 sigset_t full, prev;
1850 sigfillset (&full);
1851 sigprocmask (SIG_SETMASK, &full, &prev);
1852#endif
1853
1854 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1855
1856#ifndef _WIN32
1857 sigprocmask (SIG_SETMASK, &prev, 0);
1858#endif
1859 }
1860
1491 ev_start (EV_A_ (W)w, 1); 1861 ev_start (EV_A_ (W)w, 1);
1492 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1493 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1862 wlist_add (&signals [w->signum - 1].head, (WL)w);
1494 1863
1495 if (!((WL)w)->next) 1864 if (!((WL)w)->next)
1496 { 1865 {
1497#if WIN32 1866#if _WIN32
1498 signal (w->signum, sighandler); 1867 signal (w->signum, sighandler);
1499#else 1868#else
1500 struct sigaction sa; 1869 struct sigaction sa;
1501 sa.sa_handler = sighandler; 1870 sa.sa_handler = sighandler;
1502 sigfillset (&sa.sa_mask); 1871 sigfillset (&sa.sa_mask);
… …
1504 sigaction (w->signum, &sa, 0); 1873 sigaction (w->signum, &sa, 0);
1505#endif 1874#endif
1506 } 1875 }
1507} 1876}
1508 1877
1509void 1878void noinline
1510ev_signal_stop (EV_P_ struct ev_signal *w) 1879ev_signal_stop (EV_P_ ev_signal *w)
1511{ 1880{
1512 ev_clear_pending (EV_A_ (W)w); 1881 clear_pending (EV_A_ (W)w);
1513 if (!ev_is_active (w)) 1882 if (expect_false (!ev_is_active (w)))
1514 return; 1883 return;
1515 1884
1516 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1885 wlist_del (&signals [w->signum - 1].head, (WL)w);
1517 ev_stop (EV_A_ (W)w); 1886 ev_stop (EV_A_ (W)w);
1518 1887
1519 if (!signals [w->signum - 1].head) 1888 if (!signals [w->signum - 1].head)
1520 signal (w->signum, SIG_DFL); 1889 signal (w->signum, SIG_DFL);
1521} 1890}
1522 1891
1523void 1892void
1524ev_child_start (EV_P_ struct ev_child *w) 1893ev_child_start (EV_P_ ev_child *w)
1525{ 1894{
1526#if EV_MULTIPLICITY 1895#if EV_MULTIPLICITY
1527 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1896 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1528#endif 1897#endif
1529 if (ev_is_active (w)) 1898 if (expect_false (ev_is_active (w)))
1530 return; 1899 return;
1531 1900
1532 ev_start (EV_A_ (W)w, 1); 1901 ev_start (EV_A_ (W)w, 1);
1533 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1902 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1534} 1903}
1535 1904
1536void 1905void
1537ev_child_stop (EV_P_ struct ev_child *w) 1906ev_child_stop (EV_P_ ev_child *w)
1538{ 1907{
1539 ev_clear_pending (EV_A_ (W)w); 1908 clear_pending (EV_A_ (W)w);
1540 if (ev_is_active (w)) 1909 if (expect_false (!ev_is_active (w)))
1541 return; 1910 return;
1542 1911
1543 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1912 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1544 ev_stop (EV_A_ (W)w); 1913 ev_stop (EV_A_ (W)w);
1545} 1914}
1546 1915
1916#if EV_STAT_ENABLE
1917
1918# ifdef _WIN32
1919# undef lstat
1920# define lstat(a,b) _stati64 (a,b)
1921# endif
1922
1923#define DEF_STAT_INTERVAL 5.0074891
1924#define MIN_STAT_INTERVAL 0.1074891
1925
1926static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1927
1928#if EV_USE_INOTIFY
1929# define EV_INOTIFY_BUFSIZE 8192
1930
1931static void noinline
1932infy_add (EV_P_ ev_stat *w)
1933{
1934 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);
1935
1936 if (w->wd < 0)
1937 {
1938 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1939
1940 /* monitor some parent directory for speedup hints */
1941 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1942 {
1943 char path [4096];
1944 strcpy (path, w->path);
1945
1946 do
1947 {
1948 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1949 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1950
1951 char *pend = strrchr (path, '/');
1952
1953 if (!pend)
1954 break; /* whoops, no '/', complain to your admin */
1955
1956 *pend = 0;
1957 w->wd = inotify_add_watch (fs_fd, path, mask);
1958 }
1959 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1960 }
1961 }
1962 else
1963 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1964
1965 if (w->wd >= 0)
1966 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1967}
1968
1969static void noinline
1970infy_del (EV_P_ ev_stat *w)
1971{
1972 int slot;
1973 int wd = w->wd;
1974
1975 if (wd < 0)
1976 return;
1977
1978 w->wd = -2;
1979 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1980 wlist_del (&fs_hash [slot].head, (WL)w);
1981
1982 /* remove this watcher, if others are watching it, they will rearm */
1983 inotify_rm_watch (fs_fd, wd);
1984}
1985
1986static void noinline
1987infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1988{
1989 if (slot < 0)
1990 /* overflow, need to check for all hahs slots */
1991 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1992 infy_wd (EV_A_ slot, wd, ev);
1993 else
1994 {
1995 WL w_;
1996
1997 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1998 {
1999 ev_stat *w = (ev_stat *)w_;
2000 w_ = w_->next; /* lets us remove this watcher and all before it */
2001
2002 if (w->wd == wd || wd == -1)
2003 {
2004 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2005 {
2006 w->wd = -1;
2007 infy_add (EV_A_ w); /* re-add, no matter what */
2008 }
2009
2010 stat_timer_cb (EV_A_ &w->timer, 0);
2011 }
2012 }
2013 }
2014}
2015
2016static void
2017infy_cb (EV_P_ ev_io *w, int revents)
2018{
2019 char buf [EV_INOTIFY_BUFSIZE];
2020 struct inotify_event *ev = (struct inotify_event *)buf;
2021 int ofs;
2022 int len = read (fs_fd, buf, sizeof (buf));
2023
2024 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2025 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2026}
2027
2028void inline_size
2029infy_init (EV_P)
2030{
2031 if (fs_fd != -2)
2032 return;
2033
2034 fs_fd = inotify_init ();
2035
2036 if (fs_fd >= 0)
2037 {
2038 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2039 ev_set_priority (&fs_w, EV_MAXPRI);
2040 ev_io_start (EV_A_ &fs_w);
2041 }
2042}
2043
2044void inline_size
2045infy_fork (EV_P)
2046{
2047 int slot;
2048
2049 if (fs_fd < 0)
2050 return;
2051
2052 close (fs_fd);
2053 fs_fd = inotify_init ();
2054
2055 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2056 {
2057 WL w_ = fs_hash [slot].head;
2058 fs_hash [slot].head = 0;
2059
2060 while (w_)
2061 {
2062 ev_stat *w = (ev_stat *)w_;
2063 w_ = w_->next; /* lets us add this watcher */
2064
2065 w->wd = -1;
2066
2067 if (fs_fd >= 0)
2068 infy_add (EV_A_ w); /* re-add, no matter what */
2069 else
2070 ev_timer_start (EV_A_ &w->timer);
2071 }
2072
2073 }
2074}
2075
2076#endif
2077
2078void
2079ev_stat_stat (EV_P_ ev_stat *w)
2080{
2081 if (lstat (w->path, &w->attr) < 0)
2082 w->attr.st_nlink = 0;
2083 else if (!w->attr.st_nlink)
2084 w->attr.st_nlink = 1;
2085}
2086
2087static void noinline
2088stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2089{
2090 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2091
2092 /* we copy this here each the time so that */
2093 /* prev has the old value when the callback gets invoked */
2094 w->prev = w->attr;
2095 ev_stat_stat (EV_A_ w);
2096
2097 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2098 if (
2099 w->prev.st_dev != w->attr.st_dev
2100 || w->prev.st_ino != w->attr.st_ino
2101 || w->prev.st_mode != w->attr.st_mode
2102 || w->prev.st_nlink != w->attr.st_nlink
2103 || w->prev.st_uid != w->attr.st_uid
2104 || w->prev.st_gid != w->attr.st_gid
2105 || w->prev.st_rdev != w->attr.st_rdev
2106 || w->prev.st_size != w->attr.st_size
2107 || w->prev.st_atime != w->attr.st_atime
2108 || w->prev.st_mtime != w->attr.st_mtime
2109 || w->prev.st_ctime != w->attr.st_ctime
2110 ) {
2111 #if EV_USE_INOTIFY
2112 infy_del (EV_A_ w);
2113 infy_add (EV_A_ w);
2114 ev_stat_stat (EV_A_ w); /* avoid race... */
2115 #endif
2116
2117 ev_feed_event (EV_A_ w, EV_STAT);
2118 }
2119}
2120
2121void
2122ev_stat_start (EV_P_ ev_stat *w)
2123{
2124 if (expect_false (ev_is_active (w)))
2125 return;
2126
2127 /* since we use memcmp, we need to clear any padding data etc. */
2128 memset (&w->prev, 0, sizeof (ev_statdata));
2129 memset (&w->attr, 0, sizeof (ev_statdata));
2130
2131 ev_stat_stat (EV_A_ w);
2132
2133 if (w->interval < MIN_STAT_INTERVAL)
2134 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2135
2136 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2137 ev_set_priority (&w->timer, ev_priority (w));
2138
2139#if EV_USE_INOTIFY
2140 infy_init (EV_A);
2141
2142 if (fs_fd >= 0)
2143 infy_add (EV_A_ w);
2144 else
2145#endif
2146 ev_timer_start (EV_A_ &w->timer);
2147
2148 ev_start (EV_A_ (W)w, 1);
2149}
2150
2151void
2152ev_stat_stop (EV_P_ ev_stat *w)
2153{
2154 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w)))
2156 return;
2157
2158#if EV_USE_INOTIFY
2159 infy_del (EV_A_ w);
2160#endif
2161 ev_timer_stop (EV_A_ &w->timer);
2162
2163 ev_stop (EV_A_ (W)w);
2164}
2165#endif
2166
2167#if EV_IDLE_ENABLE
2168void
2169ev_idle_start (EV_P_ ev_idle *w)
2170{
2171 if (expect_false (ev_is_active (w)))
2172 return;
2173
2174 pri_adjust (EV_A_ (W)w);
2175
2176 {
2177 int active = ++idlecnt [ABSPRI (w)];
2178
2179 ++idleall;
2180 ev_start (EV_A_ (W)w, active);
2181
2182 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2183 idles [ABSPRI (w)][active - 1] = w;
2184 }
2185}
2186
2187void
2188ev_idle_stop (EV_P_ ev_idle *w)
2189{
2190 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w)))
2192 return;
2193
2194 {
2195 int active = ((W)w)->active;
2196
2197 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2198 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2199
2200 ev_stop (EV_A_ (W)w);
2201 --idleall;
2202 }
2203}
2204#endif
2205
2206void
2207ev_prepare_start (EV_P_ ev_prepare *w)
2208{
2209 if (expect_false (ev_is_active (w)))
2210 return;
2211
2212 ev_start (EV_A_ (W)w, ++preparecnt);
2213 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2214 prepares [preparecnt - 1] = w;
2215}
2216
2217void
2218ev_prepare_stop (EV_P_ ev_prepare *w)
2219{
2220 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w)))
2222 return;
2223
2224 {
2225 int active = ((W)w)->active;
2226 prepares [active - 1] = prepares [--preparecnt];
2227 ((W)prepares [active - 1])->active = active;
2228 }
2229
2230 ev_stop (EV_A_ (W)w);
2231}
2232
2233void
2234ev_check_start (EV_P_ ev_check *w)
2235{
2236 if (expect_false (ev_is_active (w)))
2237 return;
2238
2239 ev_start (EV_A_ (W)w, ++checkcnt);
2240 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2241 checks [checkcnt - 1] = w;
2242}
2243
2244void
2245ev_check_stop (EV_P_ ev_check *w)
2246{
2247 clear_pending (EV_A_ (W)w);
2248 if (expect_false (!ev_is_active (w)))
2249 return;
2250
2251 {
2252 int active = ((W)w)->active;
2253 checks [active - 1] = checks [--checkcnt];
2254 ((W)checks [active - 1])->active = active;
2255 }
2256
2257 ev_stop (EV_A_ (W)w);
2258}
2259
2260#if EV_EMBED_ENABLE
2261void noinline
2262ev_embed_sweep (EV_P_ ev_embed *w)
2263{
2264 ev_loop (w->other, EVLOOP_NONBLOCK);
2265}
2266
2267static void
2268embed_io_cb (EV_P_ ev_io *io, int revents)
2269{
2270 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2271
2272 if (ev_cb (w))
2273 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2274 else
2275 ev_loop (w->other, EVLOOP_NONBLOCK);
2276}
2277
2278static void
2279embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2280{
2281 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2282
2283 {
2284 struct ev_loop *loop = w->other;
2285
2286 while (fdchangecnt)
2287 {
2288 fd_reify (EV_A);
2289 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2290 }
2291 }
2292}
2293
2294#if 0
2295static void
2296embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2297{
2298 ev_idle_stop (EV_A_ idle);
2299}
2300#endif
2301
2302void
2303ev_embed_start (EV_P_ ev_embed *w)
2304{
2305 if (expect_false (ev_is_active (w)))
2306 return;
2307
2308 {
2309 struct ev_loop *loop = w->other;
2310 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2311 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2312 }
2313
2314 ev_set_priority (&w->io, ev_priority (w));
2315 ev_io_start (EV_A_ &w->io);
2316
2317 ev_prepare_init (&w->prepare, embed_prepare_cb);
2318 ev_set_priority (&w->prepare, EV_MINPRI);
2319 ev_prepare_start (EV_A_ &w->prepare);
2320
2321 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2322
2323 ev_start (EV_A_ (W)w, 1);
2324}
2325
2326void
2327ev_embed_stop (EV_P_ ev_embed *w)
2328{
2329 clear_pending (EV_A_ (W)w);
2330 if (expect_false (!ev_is_active (w)))
2331 return;
2332
2333 ev_io_stop (EV_A_ &w->io);
2334 ev_prepare_stop (EV_A_ &w->prepare);
2335
2336 ev_stop (EV_A_ (W)w);
2337}
2338#endif
2339
2340#if EV_FORK_ENABLE
2341void
2342ev_fork_start (EV_P_ ev_fork *w)
2343{
2344 if (expect_false (ev_is_active (w)))
2345 return;
2346
2347 ev_start (EV_A_ (W)w, ++forkcnt);
2348 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2349 forks [forkcnt - 1] = w;
2350}
2351
2352void
2353ev_fork_stop (EV_P_ ev_fork *w)
2354{
2355 clear_pending (EV_A_ (W)w);
2356 if (expect_false (!ev_is_active (w)))
2357 return;
2358
2359 {
2360 int active = ((W)w)->active;
2361 forks [active - 1] = forks [--forkcnt];
2362 ((W)forks [active - 1])->active = active;
2363 }
2364
2365 ev_stop (EV_A_ (W)w);
2366}
2367#endif
2368
1547/*****************************************************************************/ 2369/*****************************************************************************/
1548 2370
1549struct ev_once 2371struct ev_once
1550{ 2372{
1551 struct ev_io io; 2373 ev_io io;
1552 struct ev_timer to; 2374 ev_timer to;
1553 void (*cb)(int revents, void *arg); 2375 void (*cb)(int revents, void *arg);
1554 void *arg; 2376 void *arg;
1555}; 2377};
1556 2378
1557static void 2379static void
… …
1566 2388
1567 cb (revents, arg); 2389 cb (revents, arg);
1568} 2390}
1569 2391
1570static void 2392static void
1571once_cb_io (EV_P_ struct ev_io *w, int revents) 2393once_cb_io (EV_P_ ev_io *w, int revents)
1572{ 2394{
1573 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2395 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1574} 2396}
1575 2397
1576static void 2398static void
1577once_cb_to (EV_P_ struct ev_timer *w, int revents) 2399once_cb_to (EV_P_ ev_timer *w, int revents)
1578{ 2400{
1579 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2401 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1580} 2402}
1581 2403
1582void 2404void
1583ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2405ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1584{ 2406{
1585 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2407 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1586 2408
1587 if (!once) 2409 if (expect_false (!once))
2410 {
1588 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2411 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1589 else 2412 return;
1590 { 2413 }
2414
1591 once->cb = cb; 2415 once->cb = cb;
1592 once->arg = arg; 2416 once->arg = arg;
1593 2417
1594 ev_init (&once->io, once_cb_io); 2418 ev_init (&once->io, once_cb_io);
1595 if (fd >= 0) 2419 if (fd >= 0)
1596 { 2420 {
1597 ev_io_set (&once->io, fd, events); 2421 ev_io_set (&once->io, fd, events);
1598 ev_io_start (EV_A_ &once->io); 2422 ev_io_start (EV_A_ &once->io);
1599 } 2423 }
1600 2424
1601 ev_init (&once->to, once_cb_to); 2425 ev_init (&once->to, once_cb_to);
1602 if (timeout >= 0.) 2426 if (timeout >= 0.)
1603 { 2427 {
1604 ev_timer_set (&once->to, timeout, 0.); 2428 ev_timer_set (&once->to, timeout, 0.);
1605 ev_timer_start (EV_A_ &once->to); 2429 ev_timer_start (EV_A_ &once->to);
1606 }
1607 } 2430 }
1608} 2431}
2432
2433#if EV_MULTIPLICITY
2434 #include "ev_wrap.h"
2435#endif
1609 2436
1610#ifdef __cplusplus 2437#ifdef __cplusplus
1611} 2438}
1612#endif 2439#endif
1613 2440

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines