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Comparing libev/ev.c (file contents):
Revision 1.90 by root, Sun Nov 11 00:05:59 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 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#if EV_USE_MONOTONIC
286/* sig_atomic_t is used to avoid per-thread variables or locking but still */
287/* giving it a reasonably high chance of working on typical architetcures */
160static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 288static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
289#endif
161 290
291#ifdef _WIN32
162#include "ev_win32.c" 292# include "ev_win32.c"
293#endif
163 294
164/*****************************************************************************/ 295/*****************************************************************************/
165 296
166static void (*syserr_cb)(const char *msg); 297static void (*syserr_cb)(const char *msg);
167 298
299void
168void ev_set_syserr_cb (void (*cb)(const char *msg)) 300ev_set_syserr_cb (void (*cb)(const char *msg))
169{ 301{
170 syserr_cb = cb; 302 syserr_cb = cb;
171} 303}
172 304
173static void 305static void noinline
174syserr (const char *msg) 306syserr (const char *msg)
175{ 307{
176 if (!msg) 308 if (!msg)
177 msg = "(libev) system error"; 309 msg = "(libev) system error";
178 310
… …
185 } 317 }
186} 318}
187 319
188static void *(*alloc)(void *ptr, long size); 320static void *(*alloc)(void *ptr, long size);
189 321
322void
190void ev_set_allocator (void *(*cb)(void *ptr, long size)) 323ev_set_allocator (void *(*cb)(void *ptr, long size))
191{ 324{
192 alloc = cb; 325 alloc = cb;
193} 326}
194 327
195static void * 328inline_speed void *
196ev_realloc (void *ptr, long size) 329ev_realloc (void *ptr, long size)
197{ 330{
198 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 331 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199 332
200 if (!ptr && size) 333 if (!ptr && size)
… …
214typedef struct 347typedef struct
215{ 348{
216 WL head; 349 WL head;
217 unsigned char events; 350 unsigned char events;
218 unsigned char reify; 351 unsigned char reify;
352#if EV_SELECT_IS_WINSOCKET
353 SOCKET handle;
354#endif
219} ANFD; 355} ANFD;
220 356
221typedef struct 357typedef struct
222{ 358{
223 W w; 359 W w;
224 int events; 360 int events;
225} ANPENDING; 361} ANPENDING;
226 362
363#if EV_USE_INOTIFY
364typedef struct
365{
366 WL head;
367} ANFS;
368#endif
369
227#if EV_MULTIPLICITY 370#if EV_MULTIPLICITY
228 371
229 struct ev_loop 372 struct ev_loop
230 { 373 {
231 ev_tstamp ev_rt_now; 374 ev_tstamp ev_rt_now;
375 #define ev_rt_now ((loop)->ev_rt_now)
232 #define VAR(name,decl) decl; 376 #define VAR(name,decl) decl;
233 #include "ev_vars.h" 377 #include "ev_vars.h"
234 #undef VAR 378 #undef VAR
235 }; 379 };
236 #include "ev_wrap.h" 380 #include "ev_wrap.h"
237 381
238 struct ev_loop default_loop_struct; 382 static struct ev_loop default_loop_struct;
239 static struct ev_loop *default_loop; 383 struct ev_loop *ev_default_loop_ptr;
240 384
241#else 385#else
242 386
243 ev_tstamp ev_rt_now; 387 ev_tstamp ev_rt_now;
244 #define VAR(name,decl) static decl; 388 #define VAR(name,decl) static decl;
245 #include "ev_vars.h" 389 #include "ev_vars.h"
246 #undef VAR 390 #undef VAR
247 391
248 static int default_loop; 392 static int ev_default_loop_ptr;
249 393
250#endif 394#endif
251 395
252/*****************************************************************************/ 396/*****************************************************************************/
253 397
254inline ev_tstamp 398ev_tstamp
255ev_time (void) 399ev_time (void)
256{ 400{
257#if EV_USE_REALTIME 401#if EV_USE_REALTIME
258 struct timespec ts; 402 struct timespec ts;
259 clock_gettime (CLOCK_REALTIME, &ts); 403 clock_gettime (CLOCK_REALTIME, &ts);
… …
263 gettimeofday (&tv, 0); 407 gettimeofday (&tv, 0);
264 return tv.tv_sec + tv.tv_usec * 1e-6; 408 return tv.tv_sec + tv.tv_usec * 1e-6;
265#endif 409#endif
266} 410}
267 411
268inline ev_tstamp 412ev_tstamp inline_size
269get_clock (void) 413get_clock (void)
270{ 414{
271#if EV_USE_MONOTONIC 415#if EV_USE_MONOTONIC
272 if (expect_true (have_monotonic)) 416 if (expect_true (have_monotonic))
273 { 417 {
… …
286{ 430{
287 return ev_rt_now; 431 return ev_rt_now;
288} 432}
289#endif 433#endif
290 434
291#define array_roundsize(type,n) ((n) | 4 & ~3) 435void
436ev_sleep (ev_tstamp delay)
437{
438 if (delay > 0.)
439 {
440#if EV_USE_NANOSLEEP
441 struct timespec ts;
442
443 ts.tv_sec = (time_t)delay;
444 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
445
446 nanosleep (&ts, 0);
447#elif defined(_WIN32)
448 Sleep (delay * 1e3);
449#else
450 struct timeval tv;
451
452 tv.tv_sec = (time_t)delay;
453 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
454
455 select (0, 0, 0, 0, &tv);
456#endif
457 }
458}
459
460/*****************************************************************************/
461
462int inline_size
463array_nextsize (int elem, int cur, int cnt)
464{
465 int ncur = cur + 1;
466
467 do
468 ncur <<= 1;
469 while (cnt > ncur);
470
471 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
472 if (elem * ncur > 4096)
473 {
474 ncur *= elem;
475 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
476 ncur = ncur - sizeof (void *) * 4;
477 ncur /= elem;
478 }
479
480 return ncur;
481}
482
483static noinline void *
484array_realloc (int elem, void *base, int *cur, int cnt)
485{
486 *cur = array_nextsize (elem, *cur, cnt);
487 return ev_realloc (base, elem * *cur);
488}
292 489
293#define array_needsize(type,base,cur,cnt,init) \ 490#define array_needsize(type,base,cur,cnt,init) \
294 if (expect_false ((cnt) > cur)) \ 491 if (expect_false ((cnt) > (cur))) \
295 { \ 492 { \
296 int newcnt = cur; \ 493 int ocur_ = (cur); \
297 do \ 494 (base) = (type *)array_realloc \
298 { \ 495 (sizeof (type), (base), &(cur), (cnt)); \
299 newcnt = array_roundsize (type, newcnt << 1); \ 496 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 } 497 }
307 498
499#if 0
308#define array_slim(type,stem) \ 500#define array_slim(type,stem) \
309 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 501 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310 { \ 502 { \
311 stem ## max = array_roundsize (stem ## cnt >> 1); \ 503 stem ## max = array_roundsize (stem ## cnt >> 1); \
312 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 504 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 505 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314 } 506 }
315 507#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;
320 508
321#define array_free(stem, idx) \ 509#define array_free(stem, idx) \
322 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 510 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
323 511
324/*****************************************************************************/ 512/*****************************************************************************/
325 513
326static void 514void noinline
515ev_feed_event (EV_P_ void *w, int revents)
516{
517 W w_ = (W)w;
518 int pri = ABSPRI (w_);
519
520 if (expect_false (w_->pending))
521 pendings [pri][w_->pending - 1].events |= revents;
522 else
523 {
524 w_->pending = ++pendingcnt [pri];
525 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
526 pendings [pri][w_->pending - 1].w = w_;
527 pendings [pri][w_->pending - 1].events = revents;
528 }
529}
530
531void inline_speed
532queue_events (EV_P_ W *events, int eventcnt, int type)
533{
534 int i;
535
536 for (i = 0; i < eventcnt; ++i)
537 ev_feed_event (EV_A_ events [i], type);
538}
539
540/*****************************************************************************/
541
542void inline_size
327anfds_init (ANFD *base, int count) 543anfds_init (ANFD *base, int count)
328{ 544{
329 while (count--) 545 while (count--)
330 { 546 {
331 base->head = 0; 547 base->head = 0;
… …
334 550
335 ++base; 551 ++base;
336 } 552 }
337} 553}
338 554
339void 555void 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) 556fd_event (EV_P_ int fd, int revents)
367{ 557{
368 ANFD *anfd = anfds + fd; 558 ANFD *anfd = anfds + fd;
369 struct ev_io *w; 559 ev_io *w;
370 560
371 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 561 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
372 { 562 {
373 int ev = w->events & revents; 563 int ev = w->events & revents;
374 564
375 if (ev) 565 if (ev)
376 ev_feed_event (EV_A_ (W)w, ev); 566 ev_feed_event (EV_A_ (W)w, ev);
… …
378} 568}
379 569
380void 570void
381ev_feed_fd_event (EV_P_ int fd, int revents) 571ev_feed_fd_event (EV_P_ int fd, int revents)
382{ 572{
573 if (fd >= 0 && fd < anfdmax)
383 fd_event (EV_A_ fd, revents); 574 fd_event (EV_A_ fd, revents);
384} 575}
385 576
386/*****************************************************************************/ 577void inline_size
387
388static void
389fd_reify (EV_P) 578fd_reify (EV_P)
390{ 579{
391 int i; 580 int i;
392 581
393 for (i = 0; i < fdchangecnt; ++i) 582 for (i = 0; i < fdchangecnt; ++i)
394 { 583 {
395 int fd = fdchanges [i]; 584 int fd = fdchanges [i];
396 ANFD *anfd = anfds + fd; 585 ANFD *anfd = anfds + fd;
397 struct ev_io *w; 586 ev_io *w;
398 587
399 int events = 0; 588 unsigned char events = 0;
400 589
401 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 590 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
402 events |= w->events; 591 events |= (unsigned char)w->events;
403 592
593#if EV_SELECT_IS_WINSOCKET
594 if (events)
595 {
596 unsigned long argp;
597 anfd->handle = _get_osfhandle (fd);
598 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
599 }
600#endif
601
602 {
603 unsigned char o_events = anfd->events;
604 unsigned char o_reify = anfd->reify;
605
404 anfd->reify = 0; 606 anfd->reify = 0;
405
406 method_modify (EV_A_ fd, anfd->events, events);
407 anfd->events = events; 607 anfd->events = events;
608
609 if (o_events != events || o_reify & EV_IOFDSET)
610 backend_modify (EV_A_ fd, o_events, events);
611 }
408 } 612 }
409 613
410 fdchangecnt = 0; 614 fdchangecnt = 0;
411} 615}
412 616
413static void 617void inline_size
414fd_change (EV_P_ int fd) 618fd_change (EV_P_ int fd, int flags)
415{ 619{
416 if (anfds [fd].reify) 620 unsigned char reify = anfds [fd].reify;
417 return;
418
419 anfds [fd].reify = 1; 621 anfds [fd].reify |= flags;
420 622
623 if (expect_true (!reify))
624 {
421 ++fdchangecnt; 625 ++fdchangecnt;
422 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 626 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423 fdchanges [fdchangecnt - 1] = fd; 627 fdchanges [fdchangecnt - 1] = fd;
628 }
424} 629}
425 630
426static void 631void inline_speed
427fd_kill (EV_P_ int fd) 632fd_kill (EV_P_ int fd)
428{ 633{
429 struct ev_io *w; 634 ev_io *w;
430 635
431 while ((w = (struct ev_io *)anfds [fd].head)) 636 while ((w = (ev_io *)anfds [fd].head))
432 { 637 {
433 ev_io_stop (EV_A_ w); 638 ev_io_stop (EV_A_ w);
434 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 639 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
435 } 640 }
436} 641}
437 642
438static int 643int inline_size
439fd_valid (int fd) 644fd_valid (int fd)
440{ 645{
441#ifdef WIN32 646#ifdef _WIN32
442 return !!win32_get_osfhandle (fd); 647 return _get_osfhandle (fd) != -1;
443#else 648#else
444 return fcntl (fd, F_GETFD) != -1; 649 return fcntl (fd, F_GETFD) != -1;
445#endif 650#endif
446} 651}
447 652
448/* called on EBADF to verify fds */ 653/* called on EBADF to verify fds */
449static void 654static void noinline
450fd_ebadf (EV_P) 655fd_ebadf (EV_P)
451{ 656{
452 int fd; 657 int fd;
453 658
454 for (fd = 0; fd < anfdmax; ++fd) 659 for (fd = 0; fd < anfdmax; ++fd)
… …
456 if (!fd_valid (fd) == -1 && errno == EBADF) 661 if (!fd_valid (fd) == -1 && errno == EBADF)
457 fd_kill (EV_A_ fd); 662 fd_kill (EV_A_ fd);
458} 663}
459 664
460/* called on ENOMEM in select/poll to kill some fds and retry */ 665/* called on ENOMEM in select/poll to kill some fds and retry */
461static void 666static void noinline
462fd_enomem (EV_P) 667fd_enomem (EV_P)
463{ 668{
464 int fd; 669 int fd;
465 670
466 for (fd = anfdmax; fd--; ) 671 for (fd = anfdmax; fd--; )
… …
469 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
470 return; 675 return;
471 } 676 }
472} 677}
473 678
474/* usually called after fork if method needs to re-arm all fds from scratch */ 679/* usually called after fork if backend needs to re-arm all fds from scratch */
475static void 680static void noinline
476fd_rearm_all (EV_P) 681fd_rearm_all (EV_P)
477{ 682{
478 int fd; 683 int fd;
479 684
480 /* this should be highly optimised to not do anything but set a flag */
481 for (fd = 0; fd < anfdmax; ++fd) 685 for (fd = 0; fd < anfdmax; ++fd)
482 if (anfds [fd].events) 686 if (anfds [fd].events)
483 { 687 {
484 anfds [fd].events = 0; 688 anfds [fd].events = 0;
485 fd_change (EV_A_ fd); 689 fd_change (EV_A_ fd, EV_IOFDSET | 1);
486 } 690 }
487} 691}
488 692
489/*****************************************************************************/ 693/*****************************************************************************/
490 694
491static void 695void inline_speed
492upheap (WT *heap, int k) 696upheap (WT *heap, int k)
493{ 697{
494 WT w = heap [k]; 698 WT w = heap [k];
495 699
496 while (k && heap [k >> 1]->at > w->at) 700 while (k)
497 { 701 {
702 int p = (k - 1) >> 1;
703
704 if (heap [p]->at <= w->at)
705 break;
706
498 heap [k] = heap [k >> 1]; 707 heap [k] = heap [p];
499 ((W)heap [k])->active = k + 1; 708 ((W)heap [k])->active = k + 1;
500 k >>= 1; 709 k = p;
501 } 710 }
502 711
503 heap [k] = w; 712 heap [k] = w;
504 ((W)heap [k])->active = k + 1; 713 ((W)heap [k])->active = k + 1;
505
506} 714}
507 715
508static void 716void inline_speed
509downheap (WT *heap, int N, int k) 717downheap (WT *heap, int N, int k)
510{ 718{
511 WT w = heap [k]; 719 WT w = heap [k];
512 720
513 while (k < (N >> 1)) 721 for (;;)
514 { 722 {
515 int j = k << 1; 723 int c = (k << 1) + 1;
516 724
517 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 725 if (c >= N)
518 ++j;
519
520 if (w->at <= heap [j]->at)
521 break; 726 break;
522 727
728 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
729 ? 1 : 0;
730
731 if (w->at <= heap [c]->at)
732 break;
733
523 heap [k] = heap [j]; 734 heap [k] = heap [c];
524 ((W)heap [k])->active = k + 1; 735 ((W)heap [k])->active = k + 1;
736
525 k = j; 737 k = c;
526 } 738 }
527 739
528 heap [k] = w; 740 heap [k] = w;
529 ((W)heap [k])->active = k + 1; 741 ((W)heap [k])->active = k + 1;
530} 742}
531 743
532inline void 744void inline_size
533adjustheap (WT *heap, int N, int k, ev_tstamp at) 745adjustheap (WT *heap, int N, int k)
534{ 746{
535 ev_tstamp old_at = heap [k]->at; 747 upheap (heap, k);
536 heap [k]->at = at;
537
538 if (old_at < at)
539 downheap (heap, N, k); 748 downheap (heap, N, k);
540 else
541 upheap (heap, k);
542} 749}
543 750
544/*****************************************************************************/ 751/*****************************************************************************/
545 752
546typedef struct 753typedef struct
… …
552static ANSIG *signals; 759static ANSIG *signals;
553static int signalmax; 760static int signalmax;
554 761
555static int sigpipe [2]; 762static int sigpipe [2];
556static sig_atomic_t volatile gotsig; 763static sig_atomic_t volatile gotsig;
557static struct ev_io sigev; 764static ev_io sigev;
558 765
559static void 766void inline_size
560signals_init (ANSIG *base, int count) 767signals_init (ANSIG *base, int count)
561{ 768{
562 while (count--) 769 while (count--)
563 { 770 {
564 base->head = 0; 771 base->head = 0;
… …
569} 776}
570 777
571static void 778static void
572sighandler (int signum) 779sighandler (int signum)
573{ 780{
574#if WIN32 781#if _WIN32
575 signal (signum, sighandler); 782 signal (signum, sighandler);
576#endif 783#endif
577 784
578 signals [signum - 1].gotsig = 1; 785 signals [signum - 1].gotsig = 1;
579 786
580 if (!gotsig) 787 if (!gotsig)
581 { 788 {
582 int old_errno = errno; 789 int old_errno = errno;
583 gotsig = 1; 790 gotsig = 1;
584#ifdef WIN32
585 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586#else
587 write (sigpipe [1], &signum, 1); 791 write (sigpipe [1], &signum, 1);
588#endif
589 errno = old_errno; 792 errno = old_errno;
590 } 793 }
591} 794}
592 795
593void 796void noinline
594ev_feed_signal_event (EV_P_ int signum) 797ev_feed_signal_event (EV_P_ int signum)
595{ 798{
596 WL w; 799 WL w;
597 800
598#if EV_MULTIPLICITY 801#if EV_MULTIPLICITY
599 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 802 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600#endif 803#endif
601 804
602 --signum; 805 --signum;
603 806
604 if (signum < 0 || signum >= signalmax) 807 if (signum < 0 || signum >= signalmax)
… …
609 for (w = signals [signum].head; w; w = w->next) 812 for (w = signals [signum].head; w; w = w->next)
610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611} 814}
612 815
613static void 816static void
614sigcb (EV_P_ struct ev_io *iow, int revents) 817sigcb (EV_P_ ev_io *iow, int revents)
615{ 818{
616 int signum; 819 int signum;
617 820
618#ifdef WIN32
619 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620#else
621 read (sigpipe [0], &revents, 1); 821 read (sigpipe [0], &revents, 1);
622#endif
623 gotsig = 0; 822 gotsig = 0;
624 823
625 for (signum = signalmax; signum--; ) 824 for (signum = signalmax; signum--; )
626 if (signals [signum].gotsig) 825 if (signals [signum].gotsig)
627 ev_feed_signal_event (EV_A_ signum + 1); 826 ev_feed_signal_event (EV_A_ signum + 1);
628} 827}
629 828
630static void 829void inline_speed
830fd_intern (int fd)
831{
832#ifdef _WIN32
833 int arg = 1;
834 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
835#else
836 fcntl (fd, F_SETFD, FD_CLOEXEC);
837 fcntl (fd, F_SETFL, O_NONBLOCK);
838#endif
839}
840
841static void noinline
631siginit (EV_P) 842siginit (EV_P)
632{ 843{
633#ifndef WIN32 844 fd_intern (sigpipe [0]);
634 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 845 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
641 846
642 ev_io_set (&sigev, sigpipe [0], EV_READ); 847 ev_io_set (&sigev, sigpipe [0], EV_READ);
643 ev_io_start (EV_A_ &sigev); 848 ev_io_start (EV_A_ &sigev);
644 ev_unref (EV_A); /* child watcher should not keep loop alive */ 849 ev_unref (EV_A); /* child watcher should not keep loop alive */
645} 850}
646 851
647/*****************************************************************************/ 852/*****************************************************************************/
648 853
649static struct ev_child *childs [PID_HASHSIZE]; 854static WL childs [EV_PID_HASHSIZE];
650 855
651#ifndef WIN32 856#ifndef _WIN32
652 857
653static struct ev_signal childev; 858static ev_signal childev;
859
860void inline_speed
861child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
862{
863 ev_child *w;
864
865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
866 if (w->pid == pid || !w->pid)
867 {
868 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
869 w->rpid = pid;
870 w->rstatus = status;
871 ev_feed_event (EV_A_ (W)w, EV_CHILD);
872 }
873}
654 874
655#ifndef WCONTINUED 875#ifndef WCONTINUED
656# define WCONTINUED 0 876# define WCONTINUED 0
657#endif 877#endif
658 878
659static void 879static 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) 880childcb (EV_P_ ev_signal *sw, int revents)
676{ 881{
677 int pid, status; 882 int pid, status;
678 883
884 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 885 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680 { 886 if (!WCONTINUED
887 || errno != EINVAL
888 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
889 return;
890
681 /* make sure we are called again until all childs have been reaped */ 891 /* make sure we are called again until all childs have been reaped */
892 /* 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); 893 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683 894
684 child_reap (EV_A_ sw, pid, pid, status); 895 child_reap (EV_A_ sw, pid, pid, status);
896 if (EV_PID_HASHSIZE > 1)
685 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 897 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686 }
687} 898}
688 899
689#endif 900#endif
690 901
691/*****************************************************************************/ 902/*****************************************************************************/
692 903
904#if EV_USE_PORT
905# include "ev_port.c"
906#endif
693#if EV_USE_KQUEUE 907#if EV_USE_KQUEUE
694# include "ev_kqueue.c" 908# include "ev_kqueue.c"
695#endif 909#endif
696#if EV_USE_EPOLL 910#if EV_USE_EPOLL
697# include "ev_epoll.c" 911# include "ev_epoll.c"
… …
714{ 928{
715 return EV_VERSION_MINOR; 929 return EV_VERSION_MINOR;
716} 930}
717 931
718/* return true if we are running with elevated privileges and should ignore env variables */ 932/* return true if we are running with elevated privileges and should ignore env variables */
719static int 933int inline_size
720enable_secure (void) 934enable_secure (void)
721{ 935{
722#ifdef WIN32 936#ifdef _WIN32
723 return 0; 937 return 0;
724#else 938#else
725 return getuid () != geteuid () 939 return getuid () != geteuid ()
726 || getgid () != getegid (); 940 || getgid () != getegid ();
727#endif 941#endif
728} 942}
729 943
730int 944unsigned int
731ev_method (EV_P) 945ev_supported_backends (void)
732{ 946{
733 return method; 947 unsigned int flags = 0;
734}
735 948
736static void 949 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737loop_init (EV_P_ int methods) 950 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
951 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
952 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
953 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
954
955 return flags;
956}
957
958unsigned int
959ev_recommended_backends (void)
738{ 960{
739 if (!method) 961 unsigned int flags = ev_supported_backends ();
962
963#ifndef __NetBSD__
964 /* kqueue is borked on everything but netbsd apparently */
965 /* it usually doesn't work correctly on anything but sockets and pipes */
966 flags &= ~EVBACKEND_KQUEUE;
967#endif
968#ifdef __APPLE__
969 // flags &= ~EVBACKEND_KQUEUE; for documentation
970 flags &= ~EVBACKEND_POLL;
971#endif
972
973 return flags;
974}
975
976unsigned int
977ev_embeddable_backends (void)
978{
979 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
980
981 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
982 /* please fix it and tell me how to detect the fix */
983 flags &= ~EVBACKEND_EPOLL;
984
985 return flags;
986}
987
988unsigned int
989ev_backend (EV_P)
990{
991 return backend;
992}
993
994unsigned int
995ev_loop_count (EV_P)
996{
997 return loop_count;
998}
999
1000void
1001ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 io_blocktime = interval;
1004}
1005
1006void
1007ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1008{
1009 timeout_blocktime = interval;
1010}
1011
1012static void noinline
1013loop_init (EV_P_ unsigned int flags)
1014{
1015 if (!backend)
740 { 1016 {
741#if EV_USE_MONOTONIC 1017#if EV_USE_MONOTONIC
742 { 1018 {
743 struct timespec ts; 1019 struct timespec ts;
744 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1020 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
749 ev_rt_now = ev_time (); 1025 ev_rt_now = ev_time ();
750 mn_now = get_clock (); 1026 mn_now = get_clock ();
751 now_floor = mn_now; 1027 now_floor = mn_now;
752 rtmn_diff = ev_rt_now - mn_now; 1028 rtmn_diff = ev_rt_now - mn_now;
753 1029
754 if (methods == EVMETHOD_AUTO) 1030 io_blocktime = 0.;
755 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1031 timeout_blocktime = 0.;
1032
1033 /* pid check not overridable via env */
1034#ifndef _WIN32
1035 if (flags & EVFLAG_FORKCHECK)
1036 curpid = getpid ();
1037#endif
1038
1039 if (!(flags & EVFLAG_NOENV)
1040 && !enable_secure ()
1041 && getenv ("LIBEV_FLAGS"))
756 methods = atoi (getenv ("LIBEV_METHODS")); 1042 flags = atoi (getenv ("LIBEV_FLAGS"));
757 else
758 methods = EVMETHOD_ANY;
759 1043
760 method = 0; 1044 if (!(flags & 0x0000ffffUL))
1045 flags |= ev_recommended_backends ();
1046
1047 backend = 0;
1048 backend_fd = -1;
761#if EV_USE_WIN32 1049#if EV_USE_INOTIFY
762 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1050 fs_fd = -2;
1051#endif
1052
1053#if EV_USE_PORT
1054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763#endif 1055#endif
764#if EV_USE_KQUEUE 1056#if EV_USE_KQUEUE
765 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1057 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766#endif 1058#endif
767#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
768 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1060 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769#endif 1061#endif
770#if EV_USE_POLL 1062#if EV_USE_POLL
771 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1063 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772#endif 1064#endif
773#if EV_USE_SELECT 1065#if EV_USE_SELECT
774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1066 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775#endif 1067#endif
776 1068
777 ev_init (&sigev, sigcb); 1069 ev_init (&sigev, sigcb);
778 ev_set_priority (&sigev, EV_MAXPRI); 1070 ev_set_priority (&sigev, EV_MAXPRI);
779 } 1071 }
780} 1072}
781 1073
782void 1074static void noinline
783loop_destroy (EV_P) 1075loop_destroy (EV_P)
784{ 1076{
785 int i; 1077 int i;
786 1078
787#if EV_USE_WIN32 1079#if EV_USE_INOTIFY
788 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1080 if (fs_fd >= 0)
1081 close (fs_fd);
1082#endif
1083
1084 if (backend_fd >= 0)
1085 close (backend_fd);
1086
1087#if EV_USE_PORT
1088 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789#endif 1089#endif
790#if EV_USE_KQUEUE 1090#if EV_USE_KQUEUE
791 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1091 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792#endif 1092#endif
793#if EV_USE_EPOLL 1093#if EV_USE_EPOLL
794 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1094 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795#endif 1095#endif
796#if EV_USE_POLL 1096#if EV_USE_POLL
797 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1097 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798#endif 1098#endif
799#if EV_USE_SELECT 1099#if EV_USE_SELECT
800 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1100 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801#endif 1101#endif
802 1102
803 for (i = NUMPRI; i--; ) 1103 for (i = NUMPRI; i--; )
1104 {
804 array_free (pending, [i]); 1105 array_free (pending, [i]);
1106#if EV_IDLE_ENABLE
1107 array_free (idle, [i]);
1108#endif
1109 }
1110
1111 ev_free (anfds); anfdmax = 0;
805 1112
806 /* have to use the microsoft-never-gets-it-right macro */ 1113 /* have to use the microsoft-never-gets-it-right macro */
807 array_free_microshit (fdchange); 1114 array_free (fdchange, EMPTY);
808 array_free_microshit (timer); 1115 array_free (timer, EMPTY);
809 array_free_microshit (periodic); 1116#if EV_PERIODIC_ENABLE
810 array_free_microshit (idle); 1117 array_free (periodic, EMPTY);
811 array_free_microshit (prepare); 1118#endif
812 array_free_microshit (check); 1119#if EV_FORK_ENABLE
1120 array_free (fork, EMPTY);
1121#endif
1122 array_free (prepare, EMPTY);
1123 array_free (check, EMPTY);
813 1124
814 method = 0; 1125 backend = 0;
815} 1126}
816 1127
817static void 1128void inline_size infy_fork (EV_P);
1129
1130void inline_size
818loop_fork (EV_P) 1131loop_fork (EV_P)
819{ 1132{
1133#if EV_USE_PORT
1134 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1135#endif
1136#if EV_USE_KQUEUE
1137 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1138#endif
820#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
821 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1140 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822#endif 1141#endif
823#if EV_USE_KQUEUE 1142#if EV_USE_INOTIFY
824 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1143 infy_fork (EV_A);
825#endif 1144#endif
826 1145
827 if (ev_is_active (&sigev)) 1146 if (ev_is_active (&sigev))
828 { 1147 {
829 /* default loop */ 1148 /* default loop */
… …
842 postfork = 0; 1161 postfork = 0;
843} 1162}
844 1163
845#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
846struct ev_loop * 1165struct ev_loop *
847ev_loop_new (int methods) 1166ev_loop_new (unsigned int flags)
848{ 1167{
849 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1168 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
850 1169
851 memset (loop, 0, sizeof (struct ev_loop)); 1170 memset (loop, 0, sizeof (struct ev_loop));
852 1171
853 loop_init (EV_A_ methods); 1172 loop_init (EV_A_ flags);
854 1173
855 if (ev_method (EV_A)) 1174 if (ev_backend (EV_A))
856 return loop; 1175 return loop;
857 1176
858 return 0; 1177 return 0;
859} 1178}
860 1179
… …
873 1192
874#endif 1193#endif
875 1194
876#if EV_MULTIPLICITY 1195#if EV_MULTIPLICITY
877struct ev_loop * 1196struct ev_loop *
1197ev_default_loop_init (unsigned int flags)
878#else 1198#else
879int 1199int
1200ev_default_loop (unsigned int flags)
880#endif 1201#endif
881ev_default_loop (int methods)
882{ 1202{
883 if (sigpipe [0] == sigpipe [1]) 1203 if (sigpipe [0] == sigpipe [1])
884 if (pipe (sigpipe)) 1204 if (pipe (sigpipe))
885 return 0; 1205 return 0;
886 1206
887 if (!default_loop) 1207 if (!ev_default_loop_ptr)
888 { 1208 {
889#if EV_MULTIPLICITY 1209#if EV_MULTIPLICITY
890 struct ev_loop *loop = default_loop = &default_loop_struct; 1210 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891#else 1211#else
892 default_loop = 1; 1212 ev_default_loop_ptr = 1;
893#endif 1213#endif
894 1214
895 loop_init (EV_A_ methods); 1215 loop_init (EV_A_ flags);
896 1216
897 if (ev_method (EV_A)) 1217 if (ev_backend (EV_A))
898 { 1218 {
899 siginit (EV_A); 1219 siginit (EV_A);
900 1220
901#ifndef WIN32 1221#ifndef _WIN32
902 ev_signal_init (&childev, childcb, SIGCHLD); 1222 ev_signal_init (&childev, childcb, SIGCHLD);
903 ev_set_priority (&childev, EV_MAXPRI); 1223 ev_set_priority (&childev, EV_MAXPRI);
904 ev_signal_start (EV_A_ &childev); 1224 ev_signal_start (EV_A_ &childev);
905 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1225 ev_unref (EV_A); /* child watcher should not keep loop alive */
906#endif 1226#endif
907 } 1227 }
908 else 1228 else
909 default_loop = 0; 1229 ev_default_loop_ptr = 0;
910 } 1230 }
911 1231
912 return default_loop; 1232 return ev_default_loop_ptr;
913} 1233}
914 1234
915void 1235void
916ev_default_destroy (void) 1236ev_default_destroy (void)
917{ 1237{
918#if EV_MULTIPLICITY 1238#if EV_MULTIPLICITY
919 struct ev_loop *loop = default_loop; 1239 struct ev_loop *loop = ev_default_loop_ptr;
920#endif 1240#endif
921 1241
922#ifndef WIN32 1242#ifndef _WIN32
923 ev_ref (EV_A); /* child watcher */ 1243 ev_ref (EV_A); /* child watcher */
924 ev_signal_stop (EV_A_ &childev); 1244 ev_signal_stop (EV_A_ &childev);
925#endif 1245#endif
926 1246
927 ev_ref (EV_A); /* signal watcher */ 1247 ev_ref (EV_A); /* signal watcher */
… …
935 1255
936void 1256void
937ev_default_fork (void) 1257ev_default_fork (void)
938{ 1258{
939#if EV_MULTIPLICITY 1259#if EV_MULTIPLICITY
940 struct ev_loop *loop = default_loop; 1260 struct ev_loop *loop = ev_default_loop_ptr;
941#endif 1261#endif
942 1262
943 if (method) 1263 if (backend)
944 postfork = 1; 1264 postfork = 1;
945} 1265}
946 1266
947/*****************************************************************************/ 1267/*****************************************************************************/
948 1268
949static int 1269void
950any_pending (EV_P) 1270ev_invoke (EV_P_ void *w, int revents)
951{ 1271{
952 int pri; 1272 EV_CB_INVOKE ((W)w, revents);
953
954 for (pri = NUMPRI; pri--; )
955 if (pendingcnt [pri])
956 return 1;
957
958 return 0;
959} 1273}
960 1274
961static void 1275void inline_speed
962call_pending (EV_P) 1276call_pending (EV_P)
963{ 1277{
964 int pri; 1278 int pri;
965 1279
966 for (pri = NUMPRI; pri--; ) 1280 for (pri = NUMPRI; pri--; )
967 while (pendingcnt [pri]) 1281 while (pendingcnt [pri])
968 { 1282 {
969 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1283 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970 1284
971 if (p->w) 1285 if (expect_true (p->w))
972 { 1286 {
1287 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1288
973 p->w->pending = 0; 1289 p->w->pending = 0;
974 EV_CB_INVOKE (p->w, p->events); 1290 EV_CB_INVOKE (p->w, p->events);
975 } 1291 }
976 } 1292 }
977} 1293}
978 1294
979static void 1295void inline_size
980timers_reify (EV_P) 1296timers_reify (EV_P)
981{ 1297{
982 while (timercnt && ((WT)timers [0])->at <= mn_now) 1298 while (timercnt && ((WT)timers [0])->at <= mn_now)
983 { 1299 {
984 struct ev_timer *w = timers [0]; 1300 ev_timer *w = (ev_timer *)timers [0];
985 1301
986 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1302 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987 1303
988 /* first reschedule or stop timer */ 1304 /* first reschedule or stop timer */
989 if (w->repeat) 1305 if (w->repeat)
990 { 1306 {
991 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1307 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
992 1308
993 ((WT)w)->at += w->repeat; 1309 ((WT)w)->at += w->repeat;
994 if (((WT)w)->at < mn_now) 1310 if (((WT)w)->at < mn_now)
995 ((WT)w)->at = mn_now; 1311 ((WT)w)->at = mn_now;
996 1312
997 downheap ((WT *)timers, timercnt, 0); 1313 downheap (timers, timercnt, 0);
998 } 1314 }
999 else 1315 else
1000 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1001 1317
1002 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1318 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1003 } 1319 }
1004} 1320}
1005 1321
1006static void 1322#if EV_PERIODIC_ENABLE
1323void inline_size
1007periodics_reify (EV_P) 1324periodics_reify (EV_P)
1008{ 1325{
1009 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1326 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1010 { 1327 {
1011 struct ev_periodic *w = periodics [0]; 1328 ev_periodic *w = (ev_periodic *)periodics [0];
1012 1329
1013 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1330 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1014 1331
1015 /* first reschedule or stop timer */ 1332 /* first reschedule or stop timer */
1016 if (w->reschedule_cb) 1333 if (w->reschedule_cb)
1017 { 1334 {
1018 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1335 ((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)); 1336 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1021 downheap ((WT *)periodics, periodiccnt, 0); 1337 downheap (periodics, periodiccnt, 0);
1022 } 1338 }
1023 else if (w->interval) 1339 else if (w->interval)
1024 { 1340 {
1025 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1341 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1342 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)); 1343 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); 1344 downheap (periodics, periodiccnt, 0);
1028 } 1345 }
1029 else 1346 else
1030 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1347 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1031 1348
1032 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1349 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1033 } 1350 }
1034} 1351}
1035 1352
1036static void 1353static void noinline
1037periodics_reschedule (EV_P) 1354periodics_reschedule (EV_P)
1038{ 1355{
1039 int i; 1356 int i;
1040 1357
1041 /* adjust periodics after time jump */ 1358 /* adjust periodics after time jump */
1042 for (i = 0; i < periodiccnt; ++i) 1359 for (i = 0; i < periodiccnt; ++i)
1043 { 1360 {
1044 struct ev_periodic *w = periodics [i]; 1361 ev_periodic *w = (ev_periodic *)periodics [i];
1045 1362
1046 if (w->reschedule_cb) 1363 if (w->reschedule_cb)
1047 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1048 else if (w->interval) 1365 else if (w->interval)
1049 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1366 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1050 } 1367 }
1051 1368
1052 /* now rebuild the heap */ 1369 /* now rebuild the heap */
1053 for (i = periodiccnt >> 1; i--; ) 1370 for (i = periodiccnt >> 1; i--; )
1054 downheap ((WT *)periodics, periodiccnt, i); 1371 downheap (periodics, periodiccnt, i);
1055} 1372}
1373#endif
1056 1374
1057inline int 1375#if EV_IDLE_ENABLE
1058time_update_monotonic (EV_P) 1376void inline_size
1377idle_reify (EV_P)
1059{ 1378{
1379 if (expect_false (idleall))
1380 {
1381 int pri;
1382
1383 for (pri = NUMPRI; pri--; )
1384 {
1385 if (pendingcnt [pri])
1386 break;
1387
1388 if (idlecnt [pri])
1389 {
1390 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1391 break;
1392 }
1393 }
1394 }
1395}
1396#endif
1397
1398void inline_speed
1399time_update (EV_P_ ev_tstamp max_block)
1400{
1401 int i;
1402
1403#if EV_USE_MONOTONIC
1404 if (expect_true (have_monotonic))
1405 {
1406 ev_tstamp odiff = rtmn_diff;
1407
1060 mn_now = get_clock (); 1408 mn_now = get_clock ();
1061 1409
1410 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1411 /* interpolate in the meantime */
1062 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1412 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1063 { 1413 {
1064 ev_rt_now = rtmn_diff + mn_now; 1414 ev_rt_now = rtmn_diff + mn_now;
1065 return 0; 1415 return;
1066 } 1416 }
1067 else 1417
1068 {
1069 now_floor = mn_now; 1418 now_floor = mn_now;
1070 ev_rt_now = ev_time (); 1419 ev_rt_now = ev_time ();
1071 return 1;
1072 }
1073}
1074 1420
1075static void 1421 /* loop a few times, before making important decisions.
1076time_update (EV_P) 1422 * on the choice of "4": one iteration isn't enough,
1077{ 1423 * in case we get preempted during the calls to
1078 int i; 1424 * ev_time and get_clock. a second call is almost guaranteed
1079 1425 * to succeed in that case, though. and looping a few more times
1080#if EV_USE_MONOTONIC 1426 * doesn't hurt either as we only do this on time-jumps or
1081 if (expect_true (have_monotonic)) 1427 * in the unlikely event of having been preempted here.
1082 { 1428 */
1083 if (time_update_monotonic (EV_A)) 1429 for (i = 4; --i; )
1084 { 1430 {
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; 1431 rtmn_diff = ev_rt_now - mn_now;
1090 1432
1091 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1433 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1092 return; /* all is well */ 1434 return; /* all is well */
1093 1435
1094 ev_rt_now = ev_time (); 1436 ev_rt_now = ev_time ();
1095 mn_now = get_clock (); 1437 mn_now = get_clock ();
1096 now_floor = mn_now; 1438 now_floor = mn_now;
1097 } 1439 }
1098 1440
1441# if EV_PERIODIC_ENABLE
1442 periodics_reschedule (EV_A);
1443# endif
1444 /* no timer adjustment, as the monotonic clock doesn't jump */
1445 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1446 }
1447 else
1448#endif
1449 {
1450 ev_rt_now = ev_time ();
1451
1452 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1453 {
1454#if EV_PERIODIC_ENABLE
1099 periodics_reschedule (EV_A); 1455 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 1456#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 */ 1457 /* adjust timers. this is easy, as the offset is the same for all of them */
1114 for (i = 0; i < timercnt; ++i) 1458 for (i = 0; i < timercnt; ++i)
1115 ((WT)timers [i])->at += ev_rt_now - mn_now; 1459 ((WT)timers [i])->at += ev_rt_now - mn_now;
1116 } 1460 }
1117 1461
1118 mn_now = ev_rt_now; 1462 mn_now = ev_rt_now;
… …
1134static int loop_done; 1478static int loop_done;
1135 1479
1136void 1480void
1137ev_loop (EV_P_ int flags) 1481ev_loop (EV_P_ int flags)
1138{ 1482{
1139 double block;
1140 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1483 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1484 ? EVUNLOOP_ONE
1485 : EVUNLOOP_CANCEL;
1486
1487 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1141 1488
1142 do 1489 do
1143 { 1490 {
1491#ifndef _WIN32
1492 if (expect_false (curpid)) /* penalise the forking check even more */
1493 if (expect_false (getpid () != curpid))
1494 {
1495 curpid = getpid ();
1496 postfork = 1;
1497 }
1498#endif
1499
1500#if EV_FORK_ENABLE
1501 /* we might have forked, so queue fork handlers */
1502 if (expect_false (postfork))
1503 if (forkcnt)
1504 {
1505 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1506 call_pending (EV_A);
1507 }
1508#endif
1509
1144 /* queue check watchers (and execute them) */ 1510 /* queue prepare watchers (and execute them) */
1145 if (expect_false (preparecnt)) 1511 if (expect_false (preparecnt))
1146 { 1512 {
1147 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1513 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1148 call_pending (EV_A); 1514 call_pending (EV_A);
1149 } 1515 }
1150 1516
1517 if (expect_false (!activecnt))
1518 break;
1519
1151 /* we might have forked, so reify kernel state if necessary */ 1520 /* we might have forked, so reify kernel state if necessary */
1152 if (expect_false (postfork)) 1521 if (expect_false (postfork))
1153 loop_fork (EV_A); 1522 loop_fork (EV_A);
1154 1523
1155 /* update fd-related kernel structures */ 1524 /* update fd-related kernel structures */
1156 fd_reify (EV_A); 1525 fd_reify (EV_A);
1157 1526
1158 /* calculate blocking time */ 1527 /* calculate blocking time */
1528 {
1529 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.;
1159 1531
1160 /* we only need this for !monotonic clock or timers, but as we basically 1532 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 { 1533 {
1168 ev_rt_now = ev_time (); 1534 /* update time to cancel out callback processing overhead */
1169 mn_now = ev_rt_now; 1535 time_update (EV_A_ 1e100);
1170 }
1171 1536
1172 if (flags & EVLOOP_NONBLOCK || idlecnt)
1173 block = 0.;
1174 else
1175 {
1176 block = MAX_BLOCKTIME; 1537 waittime = MAX_BLOCKTIME;
1177 1538
1178 if (timercnt) 1539 if (timercnt)
1179 { 1540 {
1180 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1181 if (block > to) block = to; 1542 if (waittime > to) waittime = to;
1182 } 1543 }
1183 1544
1545#if EV_PERIODIC_ENABLE
1184 if (periodiccnt) 1546 if (periodiccnt)
1185 { 1547 {
1186 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1548 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1187 if (block > to) block = to; 1549 if (waittime > to) waittime = to;
1188 } 1550 }
1551#endif
1189 1552
1190 if (block < 0.) block = 0.; 1553 if (expect_false (waittime < timeout_blocktime))
1554 waittime = timeout_blocktime;
1555
1556 sleeptime = waittime - backend_fudge;
1557
1558 if (expect_true (sleeptime > io_blocktime))
1559 sleeptime = io_blocktime;
1560
1561 if (sleeptime)
1562 {
1563 ev_sleep (sleeptime);
1564 waittime -= sleeptime;
1565 }
1191 } 1566 }
1192 1567
1193 method_poll (EV_A_ block); 1568 ++loop_count;
1569 backend_poll (EV_A_ waittime);
1194 1570
1195 /* update ev_rt_now, do magic */ 1571 /* update ev_rt_now, do magic */
1196 time_update (EV_A); 1572 time_update (EV_A_ waittime + sleeptime);
1573 }
1197 1574
1198 /* queue pending timers and reschedule them */ 1575 /* queue pending timers and reschedule them */
1199 timers_reify (EV_A); /* relative timers called last */ 1576 timers_reify (EV_A); /* relative timers called last */
1577#if EV_PERIODIC_ENABLE
1200 periodics_reify (EV_A); /* absolute timers called first */ 1578 periodics_reify (EV_A); /* absolute timers called first */
1579#endif
1201 1580
1581#if EV_IDLE_ENABLE
1202 /* queue idle watchers unless io or timers are pending */ 1582 /* queue idle watchers unless other events are pending */
1203 if (idlecnt && !any_pending (EV_A)) 1583 idle_reify (EV_A);
1204 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1584#endif
1205 1585
1206 /* queue check watchers, to be executed first */ 1586 /* queue check watchers, to be executed first */
1207 if (checkcnt) 1587 if (expect_false (checkcnt))
1208 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1588 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1209 1589
1210 call_pending (EV_A); 1590 call_pending (EV_A);
1591
1211 } 1592 }
1212 while (activecnt && !loop_done); 1593 while (expect_true (activecnt && !loop_done));
1213 1594
1214 if (loop_done != 2) 1595 if (loop_done == EVUNLOOP_ONE)
1215 loop_done = 0; 1596 loop_done = EVUNLOOP_CANCEL;
1216} 1597}
1217 1598
1218void 1599void
1219ev_unloop (EV_P_ int how) 1600ev_unloop (EV_P_ int how)
1220{ 1601{
1221 loop_done = how; 1602 loop_done = how;
1222} 1603}
1223 1604
1224/*****************************************************************************/ 1605/*****************************************************************************/
1225 1606
1226inline void 1607void inline_size
1227wlist_add (WL *head, WL elem) 1608wlist_add (WL *head, WL elem)
1228{ 1609{
1229 elem->next = *head; 1610 elem->next = *head;
1230 *head = elem; 1611 *head = elem;
1231} 1612}
1232 1613
1233inline void 1614void inline_size
1234wlist_del (WL *head, WL elem) 1615wlist_del (WL *head, WL elem)
1235{ 1616{
1236 while (*head) 1617 while (*head)
1237 { 1618 {
1238 if (*head == elem) 1619 if (*head == elem)
… …
1243 1624
1244 head = &(*head)->next; 1625 head = &(*head)->next;
1245 } 1626 }
1246} 1627}
1247 1628
1248inline void 1629void inline_speed
1249ev_clear_pending (EV_P_ W w) 1630clear_pending (EV_P_ W w)
1250{ 1631{
1251 if (w->pending) 1632 if (w->pending)
1252 { 1633 {
1253 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1634 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1254 w->pending = 0; 1635 w->pending = 0;
1255 } 1636 }
1256} 1637}
1257 1638
1258inline void 1639int
1640ev_clear_pending (EV_P_ void *w)
1641{
1642 W w_ = (W)w;
1643 int pending = w_->pending;
1644
1645 if (expect_true (pending))
1646 {
1647 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1648 w_->pending = 0;
1649 p->w = 0;
1650 return p->events;
1651 }
1652 else
1653 return 0;
1654}
1655
1656void inline_size
1657pri_adjust (EV_P_ W w)
1658{
1659 int pri = w->priority;
1660 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1661 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1662 w->priority = pri;
1663}
1664
1665void inline_speed
1259ev_start (EV_P_ W w, int active) 1666ev_start (EV_P_ W w, int active)
1260{ 1667{
1261 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1668 pri_adjust (EV_A_ w);
1262 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1263
1264 w->active = active; 1669 w->active = active;
1265 ev_ref (EV_A); 1670 ev_ref (EV_A);
1266} 1671}
1267 1672
1268inline void 1673void inline_size
1269ev_stop (EV_P_ W w) 1674ev_stop (EV_P_ W w)
1270{ 1675{
1271 ev_unref (EV_A); 1676 ev_unref (EV_A);
1272 w->active = 0; 1677 w->active = 0;
1273} 1678}
1274 1679
1275/*****************************************************************************/ 1680/*****************************************************************************/
1276 1681
1277void 1682void noinline
1278ev_io_start (EV_P_ struct ev_io *w) 1683ev_io_start (EV_P_ ev_io *w)
1279{ 1684{
1280 int fd = w->fd; 1685 int fd = w->fd;
1281 1686
1282 if (ev_is_active (w)) 1687 if (expect_false (ev_is_active (w)))
1283 return; 1688 return;
1284 1689
1285 assert (("ev_io_start called with negative fd", fd >= 0)); 1690 assert (("ev_io_start called with negative fd", fd >= 0));
1286 1691
1287 ev_start (EV_A_ (W)w, 1); 1692 ev_start (EV_A_ (W)w, 1);
1288 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1693 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1289 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1694 wlist_add (&anfds[fd].head, (WL)w);
1290 1695
1291 fd_change (EV_A_ fd); 1696 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1697 w->events &= ~EV_IOFDSET;
1292} 1698}
1293 1699
1294void 1700void noinline
1295ev_io_stop (EV_P_ struct ev_io *w) 1701ev_io_stop (EV_P_ ev_io *w)
1296{ 1702{
1297 ev_clear_pending (EV_A_ (W)w); 1703 clear_pending (EV_A_ (W)w);
1298 if (!ev_is_active (w)) 1704 if (expect_false (!ev_is_active (w)))
1299 return; 1705 return;
1300 1706
1301 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1707 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1302 1708
1303 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1709 wlist_del (&anfds[w->fd].head, (WL)w);
1304 ev_stop (EV_A_ (W)w); 1710 ev_stop (EV_A_ (W)w);
1305 1711
1306 fd_change (EV_A_ w->fd); 1712 fd_change (EV_A_ w->fd, 1);
1307} 1713}
1308 1714
1309void 1715void noinline
1310ev_timer_start (EV_P_ struct ev_timer *w) 1716ev_timer_start (EV_P_ ev_timer *w)
1717{
1718 if (expect_false (ev_is_active (w)))
1719 return;
1720
1721 ((WT)w)->at += mn_now;
1722
1723 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1724
1725 ev_start (EV_A_ (W)w, ++timercnt);
1726 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1727 timers [timercnt - 1] = (WT)w;
1728 upheap (timers, timercnt - 1);
1729
1730 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1731}
1732
1733void noinline
1734ev_timer_stop (EV_P_ ev_timer *w)
1735{
1736 clear_pending (EV_A_ (W)w);
1737 if (expect_false (!ev_is_active (w)))
1738 return;
1739
1740 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1741
1742 {
1743 int active = ((W)w)->active;
1744
1745 if (expect_true (--active < --timercnt))
1746 {
1747 timers [active] = timers [timercnt];
1748 adjustheap (timers, timercnt, active);
1749 }
1750 }
1751
1752 ((WT)w)->at -= mn_now;
1753
1754 ev_stop (EV_A_ (W)w);
1755}
1756
1757void noinline
1758ev_timer_again (EV_P_ ev_timer *w)
1311{ 1759{
1312 if (ev_is_active (w)) 1760 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 { 1761 {
1352 if (w->repeat) 1762 if (w->repeat)
1763 {
1764 ((WT)w)->at = mn_now + w->repeat;
1353 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1765 adjustheap (timers, timercnt, ((W)w)->active - 1);
1766 }
1354 else 1767 else
1355 ev_timer_stop (EV_A_ w); 1768 ev_timer_stop (EV_A_ w);
1356 } 1769 }
1357 else if (w->repeat) 1770 else if (w->repeat)
1771 {
1772 w->at = w->repeat;
1358 ev_timer_start (EV_A_ w); 1773 ev_timer_start (EV_A_ w);
1774 }
1359} 1775}
1360 1776
1361void 1777#if EV_PERIODIC_ENABLE
1778void noinline
1362ev_periodic_start (EV_P_ struct ev_periodic *w) 1779ev_periodic_start (EV_P_ ev_periodic *w)
1363{ 1780{
1364 if (ev_is_active (w)) 1781 if (expect_false (ev_is_active (w)))
1365 return; 1782 return;
1366 1783
1367 if (w->reschedule_cb) 1784 if (w->reschedule_cb)
1368 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1785 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1369 else if (w->interval) 1786 else if (w->interval)
1370 { 1787 {
1371 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1788 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 */ 1789 /* 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; 1790 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1374 } 1791 }
1792 else
1793 ((WT)w)->at = w->offset;
1375 1794
1376 ev_start (EV_A_ (W)w, ++periodiccnt); 1795 ev_start (EV_A_ (W)w, ++periodiccnt);
1377 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1796 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1378 periodics [periodiccnt - 1] = w; 1797 periodics [periodiccnt - 1] = (WT)w;
1379 upheap ((WT *)periodics, periodiccnt - 1); 1798 upheap (periodics, periodiccnt - 1);
1380 1799
1381 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1800 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1382} 1801}
1383 1802
1384void 1803void noinline
1385ev_periodic_stop (EV_P_ struct ev_periodic *w) 1804ev_periodic_stop (EV_P_ ev_periodic *w)
1386{ 1805{
1387 ev_clear_pending (EV_A_ (W)w); 1806 clear_pending (EV_A_ (W)w);
1388 if (!ev_is_active (w)) 1807 if (expect_false (!ev_is_active (w)))
1389 return; 1808 return;
1390 1809
1391 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1810 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1392 1811
1393 if (((W)w)->active < periodiccnt--) 1812 {
1813 int active = ((W)w)->active;
1814
1815 if (expect_true (--active < --periodiccnt))
1394 { 1816 {
1395 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1817 periodics [active] = periodics [periodiccnt];
1396 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1818 adjustheap (periodics, periodiccnt, active);
1397 } 1819 }
1820 }
1398 1821
1399 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1400} 1823}
1401 1824
1402void 1825void noinline
1403ev_periodic_again (EV_P_ struct ev_periodic *w) 1826ev_periodic_again (EV_P_ ev_periodic *w)
1404{ 1827{
1405 /* TODO: use adjustheap and recalculation */ 1828 /* TODO: use adjustheap and recalculation */
1406 ev_periodic_stop (EV_A_ w); 1829 ev_periodic_stop (EV_A_ w);
1407 ev_periodic_start (EV_A_ w); 1830 ev_periodic_start (EV_A_ w);
1408} 1831}
1409 1832#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 1833
1476#ifndef SA_RESTART 1834#ifndef SA_RESTART
1477# define SA_RESTART 0 1835# define SA_RESTART 0
1478#endif 1836#endif
1479 1837
1480void 1838void noinline
1481ev_signal_start (EV_P_ struct ev_signal *w) 1839ev_signal_start (EV_P_ ev_signal *w)
1482{ 1840{
1483#if EV_MULTIPLICITY 1841#if EV_MULTIPLICITY
1484 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1842 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1485#endif 1843#endif
1486 if (ev_is_active (w)) 1844 if (expect_false (ev_is_active (w)))
1487 return; 1845 return;
1488 1846
1489 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1847 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1490 1848
1849 {
1850#ifndef _WIN32
1851 sigset_t full, prev;
1852 sigfillset (&full);
1853 sigprocmask (SIG_SETMASK, &full, &prev);
1854#endif
1855
1856 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1857
1858#ifndef _WIN32
1859 sigprocmask (SIG_SETMASK, &prev, 0);
1860#endif
1861 }
1862
1491 ev_start (EV_A_ (W)w, 1); 1863 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); 1864 wlist_add (&signals [w->signum - 1].head, (WL)w);
1494 1865
1495 if (!((WL)w)->next) 1866 if (!((WL)w)->next)
1496 { 1867 {
1497#if WIN32 1868#if _WIN32
1498 signal (w->signum, sighandler); 1869 signal (w->signum, sighandler);
1499#else 1870#else
1500 struct sigaction sa; 1871 struct sigaction sa;
1501 sa.sa_handler = sighandler; 1872 sa.sa_handler = sighandler;
1502 sigfillset (&sa.sa_mask); 1873 sigfillset (&sa.sa_mask);
… …
1504 sigaction (w->signum, &sa, 0); 1875 sigaction (w->signum, &sa, 0);
1505#endif 1876#endif
1506 } 1877 }
1507} 1878}
1508 1879
1509void 1880void noinline
1510ev_signal_stop (EV_P_ struct ev_signal *w) 1881ev_signal_stop (EV_P_ ev_signal *w)
1511{ 1882{
1512 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1513 if (!ev_is_active (w)) 1884 if (expect_false (!ev_is_active (w)))
1514 return; 1885 return;
1515 1886
1516 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1887 wlist_del (&signals [w->signum - 1].head, (WL)w);
1517 ev_stop (EV_A_ (W)w); 1888 ev_stop (EV_A_ (W)w);
1518 1889
1519 if (!signals [w->signum - 1].head) 1890 if (!signals [w->signum - 1].head)
1520 signal (w->signum, SIG_DFL); 1891 signal (w->signum, SIG_DFL);
1521} 1892}
1522 1893
1523void 1894void
1524ev_child_start (EV_P_ struct ev_child *w) 1895ev_child_start (EV_P_ ev_child *w)
1525{ 1896{
1526#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1527 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1898 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1528#endif 1899#endif
1529 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1530 return; 1901 return;
1531 1902
1532 ev_start (EV_A_ (W)w, 1); 1903 ev_start (EV_A_ (W)w, 1);
1533 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1904 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1534} 1905}
1535 1906
1536void 1907void
1537ev_child_stop (EV_P_ struct ev_child *w) 1908ev_child_stop (EV_P_ ev_child *w)
1538{ 1909{
1539 ev_clear_pending (EV_A_ (W)w); 1910 clear_pending (EV_A_ (W)w);
1540 if (ev_is_active (w)) 1911 if (expect_false (!ev_is_active (w)))
1541 return; 1912 return;
1542 1913
1543 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1914 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1544 ev_stop (EV_A_ (W)w); 1915 ev_stop (EV_A_ (W)w);
1545} 1916}
1546 1917
1918#if EV_STAT_ENABLE
1919
1920# ifdef _WIN32
1921# undef lstat
1922# define lstat(a,b) _stati64 (a,b)
1923# endif
1924
1925#define DEF_STAT_INTERVAL 5.0074891
1926#define MIN_STAT_INTERVAL 0.1074891
1927
1928static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1929
1930#if EV_USE_INOTIFY
1931# define EV_INOTIFY_BUFSIZE 8192
1932
1933static void noinline
1934infy_add (EV_P_ ev_stat *w)
1935{
1936 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);
1937
1938 if (w->wd < 0)
1939 {
1940 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1941
1942 /* monitor some parent directory for speedup hints */
1943 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1944 {
1945 char path [4096];
1946 strcpy (path, w->path);
1947
1948 do
1949 {
1950 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1951 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1952
1953 char *pend = strrchr (path, '/');
1954
1955 if (!pend)
1956 break; /* whoops, no '/', complain to your admin */
1957
1958 *pend = 0;
1959 w->wd = inotify_add_watch (fs_fd, path, mask);
1960 }
1961 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1962 }
1963 }
1964 else
1965 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1966
1967 if (w->wd >= 0)
1968 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1969}
1970
1971static void noinline
1972infy_del (EV_P_ ev_stat *w)
1973{
1974 int slot;
1975 int wd = w->wd;
1976
1977 if (wd < 0)
1978 return;
1979
1980 w->wd = -2;
1981 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1982 wlist_del (&fs_hash [slot].head, (WL)w);
1983
1984 /* remove this watcher, if others are watching it, they will rearm */
1985 inotify_rm_watch (fs_fd, wd);
1986}
1987
1988static void noinline
1989infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1990{
1991 if (slot < 0)
1992 /* overflow, need to check for all hahs slots */
1993 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1994 infy_wd (EV_A_ slot, wd, ev);
1995 else
1996 {
1997 WL w_;
1998
1999 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2000 {
2001 ev_stat *w = (ev_stat *)w_;
2002 w_ = w_->next; /* lets us remove this watcher and all before it */
2003
2004 if (w->wd == wd || wd == -1)
2005 {
2006 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2007 {
2008 w->wd = -1;
2009 infy_add (EV_A_ w); /* re-add, no matter what */
2010 }
2011
2012 stat_timer_cb (EV_A_ &w->timer, 0);
2013 }
2014 }
2015 }
2016}
2017
2018static void
2019infy_cb (EV_P_ ev_io *w, int revents)
2020{
2021 char buf [EV_INOTIFY_BUFSIZE];
2022 struct inotify_event *ev = (struct inotify_event *)buf;
2023 int ofs;
2024 int len = read (fs_fd, buf, sizeof (buf));
2025
2026 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2027 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2028}
2029
2030void inline_size
2031infy_init (EV_P)
2032{
2033 if (fs_fd != -2)
2034 return;
2035
2036 fs_fd = inotify_init ();
2037
2038 if (fs_fd >= 0)
2039 {
2040 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2041 ev_set_priority (&fs_w, EV_MAXPRI);
2042 ev_io_start (EV_A_ &fs_w);
2043 }
2044}
2045
2046void inline_size
2047infy_fork (EV_P)
2048{
2049 int slot;
2050
2051 if (fs_fd < 0)
2052 return;
2053
2054 close (fs_fd);
2055 fs_fd = inotify_init ();
2056
2057 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2058 {
2059 WL w_ = fs_hash [slot].head;
2060 fs_hash [slot].head = 0;
2061
2062 while (w_)
2063 {
2064 ev_stat *w = (ev_stat *)w_;
2065 w_ = w_->next; /* lets us add this watcher */
2066
2067 w->wd = -1;
2068
2069 if (fs_fd >= 0)
2070 infy_add (EV_A_ w); /* re-add, no matter what */
2071 else
2072 ev_timer_start (EV_A_ &w->timer);
2073 }
2074
2075 }
2076}
2077
2078#endif
2079
2080void
2081ev_stat_stat (EV_P_ ev_stat *w)
2082{
2083 if (lstat (w->path, &w->attr) < 0)
2084 w->attr.st_nlink = 0;
2085 else if (!w->attr.st_nlink)
2086 w->attr.st_nlink = 1;
2087}
2088
2089static void noinline
2090stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2091{
2092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2093
2094 /* we copy this here each the time so that */
2095 /* prev has the old value when the callback gets invoked */
2096 w->prev = w->attr;
2097 ev_stat_stat (EV_A_ w);
2098
2099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2100 if (
2101 w->prev.st_dev != w->attr.st_dev
2102 || w->prev.st_ino != w->attr.st_ino
2103 || w->prev.st_mode != w->attr.st_mode
2104 || w->prev.st_nlink != w->attr.st_nlink
2105 || w->prev.st_uid != w->attr.st_uid
2106 || w->prev.st_gid != w->attr.st_gid
2107 || w->prev.st_rdev != w->attr.st_rdev
2108 || w->prev.st_size != w->attr.st_size
2109 || w->prev.st_atime != w->attr.st_atime
2110 || w->prev.st_mtime != w->attr.st_mtime
2111 || w->prev.st_ctime != w->attr.st_ctime
2112 ) {
2113 #if EV_USE_INOTIFY
2114 infy_del (EV_A_ w);
2115 infy_add (EV_A_ w);
2116 ev_stat_stat (EV_A_ w); /* avoid race... */
2117 #endif
2118
2119 ev_feed_event (EV_A_ w, EV_STAT);
2120 }
2121}
2122
2123void
2124ev_stat_start (EV_P_ ev_stat *w)
2125{
2126 if (expect_false (ev_is_active (w)))
2127 return;
2128
2129 /* since we use memcmp, we need to clear any padding data etc. */
2130 memset (&w->prev, 0, sizeof (ev_statdata));
2131 memset (&w->attr, 0, sizeof (ev_statdata));
2132
2133 ev_stat_stat (EV_A_ w);
2134
2135 if (w->interval < MIN_STAT_INTERVAL)
2136 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2137
2138 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2139 ev_set_priority (&w->timer, ev_priority (w));
2140
2141#if EV_USE_INOTIFY
2142 infy_init (EV_A);
2143
2144 if (fs_fd >= 0)
2145 infy_add (EV_A_ w);
2146 else
2147#endif
2148 ev_timer_start (EV_A_ &w->timer);
2149
2150 ev_start (EV_A_ (W)w, 1);
2151}
2152
2153void
2154ev_stat_stop (EV_P_ ev_stat *w)
2155{
2156 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w)))
2158 return;
2159
2160#if EV_USE_INOTIFY
2161 infy_del (EV_A_ w);
2162#endif
2163 ev_timer_stop (EV_A_ &w->timer);
2164
2165 ev_stop (EV_A_ (W)w);
2166}
2167#endif
2168
2169#if EV_IDLE_ENABLE
2170void
2171ev_idle_start (EV_P_ ev_idle *w)
2172{
2173 if (expect_false (ev_is_active (w)))
2174 return;
2175
2176 pri_adjust (EV_A_ (W)w);
2177
2178 {
2179 int active = ++idlecnt [ABSPRI (w)];
2180
2181 ++idleall;
2182 ev_start (EV_A_ (W)w, active);
2183
2184 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2185 idles [ABSPRI (w)][active - 1] = w;
2186 }
2187}
2188
2189void
2190ev_idle_stop (EV_P_ ev_idle *w)
2191{
2192 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w)))
2194 return;
2195
2196 {
2197 int active = ((W)w)->active;
2198
2199 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2200 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2201
2202 ev_stop (EV_A_ (W)w);
2203 --idleall;
2204 }
2205}
2206#endif
2207
2208void
2209ev_prepare_start (EV_P_ ev_prepare *w)
2210{
2211 if (expect_false (ev_is_active (w)))
2212 return;
2213
2214 ev_start (EV_A_ (W)w, ++preparecnt);
2215 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2216 prepares [preparecnt - 1] = w;
2217}
2218
2219void
2220ev_prepare_stop (EV_P_ ev_prepare *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226 {
2227 int active = ((W)w)->active;
2228 prepares [active - 1] = prepares [--preparecnt];
2229 ((W)prepares [active - 1])->active = active;
2230 }
2231
2232 ev_stop (EV_A_ (W)w);
2233}
2234
2235void
2236ev_check_start (EV_P_ ev_check *w)
2237{
2238 if (expect_false (ev_is_active (w)))
2239 return;
2240
2241 ev_start (EV_A_ (W)w, ++checkcnt);
2242 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2243 checks [checkcnt - 1] = w;
2244}
2245
2246void
2247ev_check_stop (EV_P_ ev_check *w)
2248{
2249 clear_pending (EV_A_ (W)w);
2250 if (expect_false (!ev_is_active (w)))
2251 return;
2252
2253 {
2254 int active = ((W)w)->active;
2255 checks [active - 1] = checks [--checkcnt];
2256 ((W)checks [active - 1])->active = active;
2257 }
2258
2259 ev_stop (EV_A_ (W)w);
2260}
2261
2262#if EV_EMBED_ENABLE
2263void noinline
2264ev_embed_sweep (EV_P_ ev_embed *w)
2265{
2266 ev_loop (w->other, EVLOOP_NONBLOCK);
2267}
2268
2269static void
2270embed_io_cb (EV_P_ ev_io *io, int revents)
2271{
2272 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2273
2274 if (ev_cb (w))
2275 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2276 else
2277 ev_loop (w->other, EVLOOP_NONBLOCK);
2278}
2279
2280static void
2281embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2282{
2283 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2284
2285 {
2286 struct ev_loop *loop = w->other;
2287
2288 while (fdchangecnt)
2289 {
2290 fd_reify (EV_A);
2291 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2292 }
2293 }
2294}
2295
2296#if 0
2297static void
2298embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2299{
2300 ev_idle_stop (EV_A_ idle);
2301}
2302#endif
2303
2304void
2305ev_embed_start (EV_P_ ev_embed *w)
2306{
2307 if (expect_false (ev_is_active (w)))
2308 return;
2309
2310 {
2311 struct ev_loop *loop = w->other;
2312 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2313 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2314 }
2315
2316 ev_set_priority (&w->io, ev_priority (w));
2317 ev_io_start (EV_A_ &w->io);
2318
2319 ev_prepare_init (&w->prepare, embed_prepare_cb);
2320 ev_set_priority (&w->prepare, EV_MINPRI);
2321 ev_prepare_start (EV_A_ &w->prepare);
2322
2323 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2324
2325 ev_start (EV_A_ (W)w, 1);
2326}
2327
2328void
2329ev_embed_stop (EV_P_ ev_embed *w)
2330{
2331 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w)))
2333 return;
2334
2335 ev_io_stop (EV_A_ &w->io);
2336 ev_prepare_stop (EV_A_ &w->prepare);
2337
2338 ev_stop (EV_A_ (W)w);
2339}
2340#endif
2341
2342#if EV_FORK_ENABLE
2343void
2344ev_fork_start (EV_P_ ev_fork *w)
2345{
2346 if (expect_false (ev_is_active (w)))
2347 return;
2348
2349 ev_start (EV_A_ (W)w, ++forkcnt);
2350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2351 forks [forkcnt - 1] = w;
2352}
2353
2354void
2355ev_fork_stop (EV_P_ ev_fork *w)
2356{
2357 clear_pending (EV_A_ (W)w);
2358 if (expect_false (!ev_is_active (w)))
2359 return;
2360
2361 {
2362 int active = ((W)w)->active;
2363 forks [active - 1] = forks [--forkcnt];
2364 ((W)forks [active - 1])->active = active;
2365 }
2366
2367 ev_stop (EV_A_ (W)w);
2368}
2369#endif
2370
1547/*****************************************************************************/ 2371/*****************************************************************************/
1548 2372
1549struct ev_once 2373struct ev_once
1550{ 2374{
1551 struct ev_io io; 2375 ev_io io;
1552 struct ev_timer to; 2376 ev_timer to;
1553 void (*cb)(int revents, void *arg); 2377 void (*cb)(int revents, void *arg);
1554 void *arg; 2378 void *arg;
1555}; 2379};
1556 2380
1557static void 2381static void
… …
1566 2390
1567 cb (revents, arg); 2391 cb (revents, arg);
1568} 2392}
1569 2393
1570static void 2394static void
1571once_cb_io (EV_P_ struct ev_io *w, int revents) 2395once_cb_io (EV_P_ ev_io *w, int revents)
1572{ 2396{
1573 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2397 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1574} 2398}
1575 2399
1576static void 2400static void
1577once_cb_to (EV_P_ struct ev_timer *w, int revents) 2401once_cb_to (EV_P_ ev_timer *w, int revents)
1578{ 2402{
1579 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2403 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1580} 2404}
1581 2405
1582void 2406void
1583ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2407ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1584{ 2408{
1585 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2409 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1586 2410
1587 if (!once) 2411 if (expect_false (!once))
2412 {
1588 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2413 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1589 else 2414 return;
1590 { 2415 }
2416
1591 once->cb = cb; 2417 once->cb = cb;
1592 once->arg = arg; 2418 once->arg = arg;
1593 2419
1594 ev_init (&once->io, once_cb_io); 2420 ev_init (&once->io, once_cb_io);
1595 if (fd >= 0) 2421 if (fd >= 0)
1596 { 2422 {
1597 ev_io_set (&once->io, fd, events); 2423 ev_io_set (&once->io, fd, events);
1598 ev_io_start (EV_A_ &once->io); 2424 ev_io_start (EV_A_ &once->io);
1599 } 2425 }
1600 2426
1601 ev_init (&once->to, once_cb_to); 2427 ev_init (&once->to, once_cb_to);
1602 if (timeout >= 0.) 2428 if (timeout >= 0.)
1603 { 2429 {
1604 ev_timer_set (&once->to, timeout, 0.); 2430 ev_timer_set (&once->to, timeout, 0.);
1605 ev_timer_start (EV_A_ &once->to); 2431 ev_timer_start (EV_A_ &once->to);
1606 }
1607 } 2432 }
1608} 2433}
2434
2435#if EV_MULTIPLICITY
2436 #include "ev_wrap.h"
2437#endif
1609 2438
1610#ifdef __cplusplus 2439#ifdef __cplusplus
1611} 2440}
1612#endif 2441#endif
1613 2442

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