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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 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
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
43# ifndef EV_USE_REALTIME 47# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
45# endif 49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
46# endif 57# endif
47 58
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
58# endif 81# endif
59 82
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
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# 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
62# endif 113# endif
63 114
64#endif 115#endif
65 116
66#include <math.h> 117#include <math.h>
… …
75#include <sys/types.h> 126#include <sys/types.h>
76#include <time.h> 127#include <time.h>
77 128
78#include <signal.h> 129#include <signal.h>
79 130
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 131#ifdef EV_H
141# include EV_H 132# include EV_H
142#else 133#else
143# include "ev.h" 134# include "ev.h"
144#endif 135#endif
145 136
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
146#if __GNUC__ >= 3 254#if __GNUC__ >= 4
147# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 256# define noinline __attribute__ ((noinline))
149#else 257#else
150# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
151# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
152#endif 263#endif
153 264
154#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
155#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
156 274
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 277
278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
280
160typedef struct ev_watcher *W; 281typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
163 284
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 */
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 288static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
289#endif
165 290
166#ifdef WIN32 291#ifdef _WIN32
167# include "ev_win32.c" 292# include "ev_win32.c"
168#endif 293#endif
169 294
170/*****************************************************************************/ 295/*****************************************************************************/
171 296
172static void (*syserr_cb)(const char *msg); 297static void (*syserr_cb)(const char *msg);
173 298
299void
174void ev_set_syserr_cb (void (*cb)(const char *msg)) 300ev_set_syserr_cb (void (*cb)(const char *msg))
175{ 301{
176 syserr_cb = cb; 302 syserr_cb = cb;
177} 303}
178 304
179static void 305static void noinline
180syserr (const char *msg) 306syserr (const char *msg)
181{ 307{
182 if (!msg) 308 if (!msg)
183 msg = "(libev) system error"; 309 msg = "(libev) system error";
184 310
… …
191 } 317 }
192} 318}
193 319
194static void *(*alloc)(void *ptr, long size); 320static void *(*alloc)(void *ptr, long size);
195 321
322void
196void ev_set_allocator (void *(*cb)(void *ptr, long size)) 323ev_set_allocator (void *(*cb)(void *ptr, long size))
197{ 324{
198 alloc = cb; 325 alloc = cb;
199} 326}
200 327
201static void * 328inline_speed void *
202ev_realloc (void *ptr, long size) 329ev_realloc (void *ptr, long size)
203{ 330{
204 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 331 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205 332
206 if (!ptr && size) 333 if (!ptr && size)
… …
220typedef struct 347typedef struct
221{ 348{
222 WL head; 349 WL head;
223 unsigned char events; 350 unsigned char events;
224 unsigned char reify; 351 unsigned char reify;
352#if EV_SELECT_IS_WINSOCKET
353 SOCKET handle;
354#endif
225} ANFD; 355} ANFD;
226 356
227typedef struct 357typedef struct
228{ 358{
229 W w; 359 W w;
230 int events; 360 int events;
231} ANPENDING; 361} ANPENDING;
232 362
363#if EV_USE_INOTIFY
364typedef struct
365{
366 WL head;
367} ANFS;
368#endif
369
233#if EV_MULTIPLICITY 370#if EV_MULTIPLICITY
234 371
235 struct ev_loop 372 struct ev_loop
236 { 373 {
237 ev_tstamp ev_rt_now; 374 ev_tstamp ev_rt_now;
375 #define ev_rt_now ((loop)->ev_rt_now)
238 #define VAR(name,decl) decl; 376 #define VAR(name,decl) decl;
239 #include "ev_vars.h" 377 #include "ev_vars.h"
240 #undef VAR 378 #undef VAR
241 }; 379 };
242 #include "ev_wrap.h" 380 #include "ev_wrap.h"
243 381
244 struct ev_loop default_loop_struct; 382 static struct ev_loop default_loop_struct;
245 static struct ev_loop *default_loop; 383 struct ev_loop *ev_default_loop_ptr;
246 384
247#else 385#else
248 386
249 ev_tstamp ev_rt_now; 387 ev_tstamp ev_rt_now;
250 #define VAR(name,decl) static decl; 388 #define VAR(name,decl) static decl;
251 #include "ev_vars.h" 389 #include "ev_vars.h"
252 #undef VAR 390 #undef VAR
253 391
254 static int default_loop; 392 static int ev_default_loop_ptr;
255 393
256#endif 394#endif
257 395
258/*****************************************************************************/ 396/*****************************************************************************/
259 397
… …
269 gettimeofday (&tv, 0); 407 gettimeofday (&tv, 0);
270 return tv.tv_sec + tv.tv_usec * 1e-6; 408 return tv.tv_sec + tv.tv_usec * 1e-6;
271#endif 409#endif
272} 410}
273 411
274inline ev_tstamp 412ev_tstamp inline_size
275get_clock (void) 413get_clock (void)
276{ 414{
277#if EV_USE_MONOTONIC 415#if EV_USE_MONOTONIC
278 if (expect_true (have_monotonic)) 416 if (expect_true (have_monotonic))
279 { 417 {
… …
292{ 430{
293 return ev_rt_now; 431 return ev_rt_now;
294} 432}
295#endif 433#endif
296 434
297#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}
298 489
299#define array_needsize(type,base,cur,cnt,init) \ 490#define array_needsize(type,base,cur,cnt,init) \
300 if (expect_false ((cnt) > cur)) \ 491 if (expect_false ((cnt) > (cur))) \
301 { \ 492 { \
302 int newcnt = cur; \ 493 int ocur_ = (cur); \
303 do \ 494 (base) = (type *)array_realloc \
304 { \ 495 (sizeof (type), (base), &(cur), (cnt)); \
305 newcnt = array_roundsize (type, newcnt << 1); \ 496 init ((base) + (ocur_), (cur) - ocur_); \
306 } \
307 while ((cnt) > newcnt); \
308 \
309 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
310 init (base + cur, newcnt - cur); \
311 cur = newcnt; \
312 } 497 }
313 498
499#if 0
314#define array_slim(type,stem) \ 500#define array_slim(type,stem) \
315 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 501 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
316 { \ 502 { \
317 stem ## max = array_roundsize (stem ## cnt >> 1); \ 503 stem ## max = array_roundsize (stem ## cnt >> 1); \
318 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 504 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 505 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320 } 506 }
321 507#endif
322/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324#define array_free_microshit(stem) \
325 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326 508
327#define array_free(stem, idx) \ 509#define array_free(stem, idx) \
328 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;
329 511
330/*****************************************************************************/ 512/*****************************************************************************/
331 513
332static 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
333anfds_init (ANFD *base, int count) 543anfds_init (ANFD *base, int count)
334{ 544{
335 while (count--) 545 while (count--)
336 { 546 {
337 base->head = 0; 547 base->head = 0;
… …
340 550
341 ++base; 551 ++base;
342 } 552 }
343} 553}
344 554
345void 555void inline_speed
346ev_feed_event (EV_P_ void *w, int revents)
347{
348 W w_ = (W)w;
349
350 if (w_->pending)
351 {
352 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353 return;
354 }
355
356 w_->pending = ++pendingcnt [ABSPRI (w_)];
357 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360}
361
362static void
363queue_events (EV_P_ W *events, int eventcnt, int type)
364{
365 int i;
366
367 for (i = 0; i < eventcnt; ++i)
368 ev_feed_event (EV_A_ events [i], type);
369}
370
371inline void
372fd_event (EV_P_ int fd, int revents) 556fd_event (EV_P_ int fd, int revents)
373{ 557{
374 ANFD *anfd = anfds + fd; 558 ANFD *anfd = anfds + fd;
375 struct ev_io *w; 559 ev_io *w;
376 560
377 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)
378 { 562 {
379 int ev = w->events & revents; 563 int ev = w->events & revents;
380 564
381 if (ev) 565 if (ev)
382 ev_feed_event (EV_A_ (W)w, ev); 566 ev_feed_event (EV_A_ (W)w, ev);
… …
384} 568}
385 569
386void 570void
387ev_feed_fd_event (EV_P_ int fd, int revents) 571ev_feed_fd_event (EV_P_ int fd, int revents)
388{ 572{
573 if (fd >= 0 && fd < anfdmax)
389 fd_event (EV_A_ fd, revents); 574 fd_event (EV_A_ fd, revents);
390} 575}
391 576
392/*****************************************************************************/ 577void inline_size
393
394static void
395fd_reify (EV_P) 578fd_reify (EV_P)
396{ 579{
397 int i; 580 int i;
398 581
399 for (i = 0; i < fdchangecnt; ++i) 582 for (i = 0; i < fdchangecnt; ++i)
400 { 583 {
401 int fd = fdchanges [i]; 584 int fd = fdchanges [i];
402 ANFD *anfd = anfds + fd; 585 ANFD *anfd = anfds + fd;
403 struct ev_io *w; 586 ev_io *w;
404 587
405 int events = 0; 588 unsigned char events = 0;
406 589
407 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)
408 events |= w->events; 591 events |= (unsigned char)w->events;
409 592
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
410 anfd->reify = 0; 606 anfd->reify = 0;
411
412 method_modify (EV_A_ fd, anfd->events, events);
413 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 }
414 } 612 }
415 613
416 fdchangecnt = 0; 614 fdchangecnt = 0;
417} 615}
418 616
419static void 617void inline_size
420fd_change (EV_P_ int fd) 618fd_change (EV_P_ int fd, int flags)
421{ 619{
422 if (anfds [fd].reify) 620 unsigned char reify = anfds [fd].reify;
423 return;
424
425 anfds [fd].reify = 1; 621 anfds [fd].reify |= flags;
426 622
623 if (expect_true (!reify))
624 {
427 ++fdchangecnt; 625 ++fdchangecnt;
428 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 626 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429 fdchanges [fdchangecnt - 1] = fd; 627 fdchanges [fdchangecnt - 1] = fd;
628 }
430} 629}
431 630
432static void 631void inline_speed
433fd_kill (EV_P_ int fd) 632fd_kill (EV_P_ int fd)
434{ 633{
435 struct ev_io *w; 634 ev_io *w;
436 635
437 while ((w = (struct ev_io *)anfds [fd].head)) 636 while ((w = (ev_io *)anfds [fd].head))
438 { 637 {
439 ev_io_stop (EV_A_ w); 638 ev_io_stop (EV_A_ w);
440 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);
441 } 640 }
442} 641}
443 642
444static int 643int inline_size
445fd_valid (int fd) 644fd_valid (int fd)
446{ 645{
447#ifdef WIN32 646#ifdef _WIN32
448 return !!win32_get_osfhandle (fd); 647 return _get_osfhandle (fd) != -1;
449#else 648#else
450 return fcntl (fd, F_GETFD) != -1; 649 return fcntl (fd, F_GETFD) != -1;
451#endif 650#endif
452} 651}
453 652
454/* called on EBADF to verify fds */ 653/* called on EBADF to verify fds */
455static void 654static void noinline
456fd_ebadf (EV_P) 655fd_ebadf (EV_P)
457{ 656{
458 int fd; 657 int fd;
459 658
460 for (fd = 0; fd < anfdmax; ++fd) 659 for (fd = 0; fd < anfdmax; ++fd)
… …
462 if (!fd_valid (fd) == -1 && errno == EBADF) 661 if (!fd_valid (fd) == -1 && errno == EBADF)
463 fd_kill (EV_A_ fd); 662 fd_kill (EV_A_ fd);
464} 663}
465 664
466/* 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 */
467static void 666static void noinline
468fd_enomem (EV_P) 667fd_enomem (EV_P)
469{ 668{
470 int fd; 669 int fd;
471 670
472 for (fd = anfdmax; fd--; ) 671 for (fd = anfdmax; fd--; )
… …
475 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
476 return; 675 return;
477 } 676 }
478} 677}
479 678
480/* 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 */
481static void 680static void noinline
482fd_rearm_all (EV_P) 681fd_rearm_all (EV_P)
483{ 682{
484 int fd; 683 int fd;
485 684
486 /* this should be highly optimised to not do anything but set a flag */
487 for (fd = 0; fd < anfdmax; ++fd) 685 for (fd = 0; fd < anfdmax; ++fd)
488 if (anfds [fd].events) 686 if (anfds [fd].events)
489 { 687 {
490 anfds [fd].events = 0; 688 anfds [fd].events = 0;
491 fd_change (EV_A_ fd); 689 fd_change (EV_A_ fd, EV_IOFDSET | 1);
492 } 690 }
493} 691}
494 692
495/*****************************************************************************/ 693/*****************************************************************************/
496 694
497static void 695void inline_speed
498upheap (WT *heap, int k) 696upheap (WT *heap, int k)
499{ 697{
500 WT w = heap [k]; 698 WT w = heap [k];
501 699
502 while (k && heap [k >> 1]->at > w->at) 700 while (k)
503 { 701 {
702 int p = (k - 1) >> 1;
703
704 if (heap [p]->at <= w->at)
705 break;
706
504 heap [k] = heap [k >> 1]; 707 heap [k] = heap [p];
505 ((W)heap [k])->active = k + 1; 708 ((W)heap [k])->active = k + 1;
506 k >>= 1; 709 k = p;
507 } 710 }
508 711
509 heap [k] = w; 712 heap [k] = w;
510 ((W)heap [k])->active = k + 1; 713 ((W)heap [k])->active = k + 1;
511
512} 714}
513 715
514static void 716void inline_speed
515downheap (WT *heap, int N, int k) 717downheap (WT *heap, int N, int k)
516{ 718{
517 WT w = heap [k]; 719 WT w = heap [k];
518 720
519 while (k < (N >> 1)) 721 for (;;)
520 { 722 {
521 int j = k << 1; 723 int c = (k << 1) + 1;
522 724
523 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 725 if (c >= N)
524 ++j;
525
526 if (w->at <= heap [j]->at)
527 break; 726 break;
528 727
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
529 heap [k] = heap [j]; 734 heap [k] = heap [c];
530 ((W)heap [k])->active = k + 1; 735 ((W)heap [k])->active = k + 1;
736
531 k = j; 737 k = c;
532 } 738 }
533 739
534 heap [k] = w; 740 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 741 ((W)heap [k])->active = k + 1;
536} 742}
537 743
538inline void 744void inline_size
539adjustheap (WT *heap, int N, int k, ev_tstamp at) 745adjustheap (WT *heap, int N, int k)
540{ 746{
541 ev_tstamp old_at = heap [k]->at; 747 upheap (heap, k);
542 heap [k]->at = at;
543
544 if (old_at < at)
545 downheap (heap, N, k); 748 downheap (heap, N, k);
546 else
547 upheap (heap, k);
548} 749}
549 750
550/*****************************************************************************/ 751/*****************************************************************************/
551 752
552typedef struct 753typedef struct
… …
558static ANSIG *signals; 759static ANSIG *signals;
559static int signalmax; 760static int signalmax;
560 761
561static int sigpipe [2]; 762static int sigpipe [2];
562static sig_atomic_t volatile gotsig; 763static sig_atomic_t volatile gotsig;
563static struct ev_io sigev; 764static ev_io sigev;
564 765
565static void 766void inline_size
566signals_init (ANSIG *base, int count) 767signals_init (ANSIG *base, int count)
567{ 768{
568 while (count--) 769 while (count--)
569 { 770 {
570 base->head = 0; 771 base->head = 0;
… …
575} 776}
576 777
577static void 778static void
578sighandler (int signum) 779sighandler (int signum)
579{ 780{
580#if WIN32 781#if _WIN32
581 signal (signum, sighandler); 782 signal (signum, sighandler);
582#endif 783#endif
583 784
584 signals [signum - 1].gotsig = 1; 785 signals [signum - 1].gotsig = 1;
585 786
586 if (!gotsig) 787 if (!gotsig)
587 { 788 {
588 int old_errno = errno; 789 int old_errno = errno;
589 gotsig = 1; 790 gotsig = 1;
590#ifdef WIN32
591 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592#else
593 write (sigpipe [1], &signum, 1); 791 write (sigpipe [1], &signum, 1);
594#endif
595 errno = old_errno; 792 errno = old_errno;
596 } 793 }
597} 794}
598 795
599void 796void noinline
600ev_feed_signal_event (EV_P_ int signum) 797ev_feed_signal_event (EV_P_ int signum)
601{ 798{
602 WL w; 799 WL w;
603 800
604#if EV_MULTIPLICITY 801#if EV_MULTIPLICITY
605 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));
606#endif 803#endif
607 804
608 --signum; 805 --signum;
609 806
610 if (signum < 0 || signum >= signalmax) 807 if (signum < 0 || signum >= signalmax)
… …
615 for (w = signals [signum].head; w; w = w->next) 812 for (w = signals [signum].head; w; w = w->next)
616 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617} 814}
618 815
619static void 816static void
620sigcb (EV_P_ struct ev_io *iow, int revents) 817sigcb (EV_P_ ev_io *iow, int revents)
621{ 818{
622 int signum; 819 int signum;
623 820
624#ifdef WIN32
625 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626#else
627 read (sigpipe [0], &revents, 1); 821 read (sigpipe [0], &revents, 1);
628#endif
629 gotsig = 0; 822 gotsig = 0;
630 823
631 for (signum = signalmax; signum--; ) 824 for (signum = signalmax; signum--; )
632 if (signals [signum].gotsig) 825 if (signals [signum].gotsig)
633 ev_feed_signal_event (EV_A_ signum + 1); 826 ev_feed_signal_event (EV_A_ signum + 1);
634} 827}
635 828
636static 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
637siginit (EV_P) 842siginit (EV_P)
638{ 843{
639#ifndef WIN32 844 fd_intern (sigpipe [0]);
640 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 845 fd_intern (sigpipe [1]);
641 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643 /* rather than sort out wether we really need nb, set it */
644 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646#endif
647 846
648 ev_io_set (&sigev, sigpipe [0], EV_READ); 847 ev_io_set (&sigev, sigpipe [0], EV_READ);
649 ev_io_start (EV_A_ &sigev); 848 ev_io_start (EV_A_ &sigev);
650 ev_unref (EV_A); /* child watcher should not keep loop alive */ 849 ev_unref (EV_A); /* child watcher should not keep loop alive */
651} 850}
652 851
653/*****************************************************************************/ 852/*****************************************************************************/
654 853
655static struct ev_child *childs [PID_HASHSIZE]; 854static WL childs [EV_PID_HASHSIZE];
656 855
657#ifndef WIN32 856#ifndef _WIN32
658 857
659static 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}
660 874
661#ifndef WCONTINUED 875#ifndef WCONTINUED
662# define WCONTINUED 0 876# define WCONTINUED 0
663#endif 877#endif
664 878
665static void 879static void
666child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
667{
668 struct ev_child *w;
669
670 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
671 if (w->pid == pid || !w->pid)
672 {
673 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674 w->rpid = pid;
675 w->rstatus = status;
676 ev_feed_event (EV_A_ (W)w, EV_CHILD);
677 }
678}
679
680static void
681childcb (EV_P_ struct ev_signal *sw, int revents) 880childcb (EV_P_ ev_signal *sw, int revents)
682{ 881{
683 int pid, status; 882 int pid, status;
684 883
884 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 885 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686 { 886 if (!WCONTINUED
887 || errno != EINVAL
888 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
889 return;
890
687 /* 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 */
688 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 893 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689 894
690 child_reap (EV_A_ sw, pid, pid, status); 895 child_reap (EV_A_ sw, pid, pid, status);
896 if (EV_PID_HASHSIZE > 1)
691 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 */
692 }
693} 898}
694 899
695#endif 900#endif
696 901
697/*****************************************************************************/ 902/*****************************************************************************/
698 903
904#if EV_USE_PORT
905# include "ev_port.c"
906#endif
699#if EV_USE_KQUEUE 907#if EV_USE_KQUEUE
700# include "ev_kqueue.c" 908# include "ev_kqueue.c"
701#endif 909#endif
702#if EV_USE_EPOLL 910#if EV_USE_EPOLL
703# include "ev_epoll.c" 911# include "ev_epoll.c"
… …
720{ 928{
721 return EV_VERSION_MINOR; 929 return EV_VERSION_MINOR;
722} 930}
723 931
724/* 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 */
725static int 933int inline_size
726enable_secure (void) 934enable_secure (void)
727{ 935{
728#ifdef WIN32 936#ifdef _WIN32
729 return 0; 937 return 0;
730#else 938#else
731 return getuid () != geteuid () 939 return getuid () != geteuid ()
732 || getgid () != getegid (); 940 || getgid () != getegid ();
733#endif 941#endif
734} 942}
735 943
736int 944unsigned int
737ev_method (EV_P) 945ev_supported_backends (void)
738{ 946{
739 return method; 947 unsigned int flags = 0;
740}
741 948
742static void 949 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743loop_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)
744{ 960{
745 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)
746 { 1016 {
747#if EV_USE_MONOTONIC 1017#if EV_USE_MONOTONIC
748 { 1018 {
749 struct timespec ts; 1019 struct timespec ts;
750 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1020 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
755 ev_rt_now = ev_time (); 1025 ev_rt_now = ev_time ();
756 mn_now = get_clock (); 1026 mn_now = get_clock ();
757 now_floor = mn_now; 1027 now_floor = mn_now;
758 rtmn_diff = ev_rt_now - mn_now; 1028 rtmn_diff = ev_rt_now - mn_now;
759 1029
760 if (methods == EVMETHOD_AUTO) 1030 io_blocktime = 0.;
761 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"))
762 methods = atoi (getenv ("LIBEV_METHODS")); 1042 flags = atoi (getenv ("LIBEV_FLAGS"));
763 else
764 methods = EVMETHOD_ANY;
765 1043
766 method = 0; 1044 if (!(flags & 0x0000ffffUL))
1045 flags |= ev_recommended_backends ();
1046
1047 backend = 0;
1048 backend_fd = -1;
767#if EV_USE_WIN32 1049#if EV_USE_INOTIFY
768 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);
769#endif 1055#endif
770#if EV_USE_KQUEUE 1056#if EV_USE_KQUEUE
771 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1057 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772#endif 1058#endif
773#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
774 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1060 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775#endif 1061#endif
776#if EV_USE_POLL 1062#if EV_USE_POLL
777 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1063 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778#endif 1064#endif
779#if EV_USE_SELECT 1065#if EV_USE_SELECT
780 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1066 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781#endif 1067#endif
782 1068
783 ev_init (&sigev, sigcb); 1069 ev_init (&sigev, sigcb);
784 ev_set_priority (&sigev, EV_MAXPRI); 1070 ev_set_priority (&sigev, EV_MAXPRI);
785 } 1071 }
786} 1072}
787 1073
788void 1074static void noinline
789loop_destroy (EV_P) 1075loop_destroy (EV_P)
790{ 1076{
791 int i; 1077 int i;
792 1078
793#if EV_USE_WIN32 1079#if EV_USE_INOTIFY
794 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);
795#endif 1089#endif
796#if EV_USE_KQUEUE 1090#if EV_USE_KQUEUE
797 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1091 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798#endif 1092#endif
799#if EV_USE_EPOLL 1093#if EV_USE_EPOLL
800 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1094 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801#endif 1095#endif
802#if EV_USE_POLL 1096#if EV_USE_POLL
803 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1097 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804#endif 1098#endif
805#if EV_USE_SELECT 1099#if EV_USE_SELECT
806 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1100 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807#endif 1101#endif
808 1102
809 for (i = NUMPRI; i--; ) 1103 for (i = NUMPRI; i--; )
1104 {
810 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;
811 1112
812 /* have to use the microsoft-never-gets-it-right macro */ 1113 /* have to use the microsoft-never-gets-it-right macro */
813 array_free_microshit (fdchange); 1114 array_free (fdchange, EMPTY);
814 array_free_microshit (timer); 1115 array_free (timer, EMPTY);
815#if EV_PERIODICS 1116#if EV_PERIODIC_ENABLE
816 array_free_microshit (periodic); 1117 array_free (periodic, EMPTY);
817#endif 1118#endif
818 array_free_microshit (idle); 1119#if EV_FORK_ENABLE
819 array_free_microshit (prepare); 1120 array_free (fork, EMPTY);
820 array_free_microshit (check); 1121#endif
1122 array_free (prepare, EMPTY);
1123 array_free (check, EMPTY);
821 1124
822 method = 0; 1125 backend = 0;
823} 1126}
824 1127
825static void 1128void inline_size infy_fork (EV_P);
1129
1130void inline_size
826loop_fork (EV_P) 1131loop_fork (EV_P)
827{ 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
828#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
829 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1140 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830#endif 1141#endif
831#if EV_USE_KQUEUE 1142#if EV_USE_INOTIFY
832 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1143 infy_fork (EV_A);
833#endif 1144#endif
834 1145
835 if (ev_is_active (&sigev)) 1146 if (ev_is_active (&sigev))
836 { 1147 {
837 /* default loop */ 1148 /* default loop */
… …
850 postfork = 0; 1161 postfork = 0;
851} 1162}
852 1163
853#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
854struct ev_loop * 1165struct ev_loop *
855ev_loop_new (int methods) 1166ev_loop_new (unsigned int flags)
856{ 1167{
857 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));
858 1169
859 memset (loop, 0, sizeof (struct ev_loop)); 1170 memset (loop, 0, sizeof (struct ev_loop));
860 1171
861 loop_init (EV_A_ methods); 1172 loop_init (EV_A_ flags);
862 1173
863 if (ev_method (EV_A)) 1174 if (ev_backend (EV_A))
864 return loop; 1175 return loop;
865 1176
866 return 0; 1177 return 0;
867} 1178}
868 1179
… …
881 1192
882#endif 1193#endif
883 1194
884#if EV_MULTIPLICITY 1195#if EV_MULTIPLICITY
885struct ev_loop * 1196struct ev_loop *
1197ev_default_loop_init (unsigned int flags)
886#else 1198#else
887int 1199int
1200ev_default_loop (unsigned int flags)
888#endif 1201#endif
889ev_default_loop (int methods)
890{ 1202{
891 if (sigpipe [0] == sigpipe [1]) 1203 if (sigpipe [0] == sigpipe [1])
892 if (pipe (sigpipe)) 1204 if (pipe (sigpipe))
893 return 0; 1205 return 0;
894 1206
895 if (!default_loop) 1207 if (!ev_default_loop_ptr)
896 { 1208 {
897#if EV_MULTIPLICITY 1209#if EV_MULTIPLICITY
898 struct ev_loop *loop = default_loop = &default_loop_struct; 1210 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899#else 1211#else
900 default_loop = 1; 1212 ev_default_loop_ptr = 1;
901#endif 1213#endif
902 1214
903 loop_init (EV_A_ methods); 1215 loop_init (EV_A_ flags);
904 1216
905 if (ev_method (EV_A)) 1217 if (ev_backend (EV_A))
906 { 1218 {
907 siginit (EV_A); 1219 siginit (EV_A);
908 1220
909#ifndef WIN32 1221#ifndef _WIN32
910 ev_signal_init (&childev, childcb, SIGCHLD); 1222 ev_signal_init (&childev, childcb, SIGCHLD);
911 ev_set_priority (&childev, EV_MAXPRI); 1223 ev_set_priority (&childev, EV_MAXPRI);
912 ev_signal_start (EV_A_ &childev); 1224 ev_signal_start (EV_A_ &childev);
913 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1225 ev_unref (EV_A); /* child watcher should not keep loop alive */
914#endif 1226#endif
915 } 1227 }
916 else 1228 else
917 default_loop = 0; 1229 ev_default_loop_ptr = 0;
918 } 1230 }
919 1231
920 return default_loop; 1232 return ev_default_loop_ptr;
921} 1233}
922 1234
923void 1235void
924ev_default_destroy (void) 1236ev_default_destroy (void)
925{ 1237{
926#if EV_MULTIPLICITY 1238#if EV_MULTIPLICITY
927 struct ev_loop *loop = default_loop; 1239 struct ev_loop *loop = ev_default_loop_ptr;
928#endif 1240#endif
929 1241
930#ifndef WIN32 1242#ifndef _WIN32
931 ev_ref (EV_A); /* child watcher */ 1243 ev_ref (EV_A); /* child watcher */
932 ev_signal_stop (EV_A_ &childev); 1244 ev_signal_stop (EV_A_ &childev);
933#endif 1245#endif
934 1246
935 ev_ref (EV_A); /* signal watcher */ 1247 ev_ref (EV_A); /* signal watcher */
… …
943 1255
944void 1256void
945ev_default_fork (void) 1257ev_default_fork (void)
946{ 1258{
947#if EV_MULTIPLICITY 1259#if EV_MULTIPLICITY
948 struct ev_loop *loop = default_loop; 1260 struct ev_loop *loop = ev_default_loop_ptr;
949#endif 1261#endif
950 1262
951 if (method) 1263 if (backend)
952 postfork = 1; 1264 postfork = 1;
953} 1265}
954 1266
955/*****************************************************************************/ 1267/*****************************************************************************/
956 1268
957static int 1269void
958any_pending (EV_P) 1270ev_invoke (EV_P_ void *w, int revents)
959{ 1271{
960 int pri; 1272 EV_CB_INVOKE ((W)w, revents);
961
962 for (pri = NUMPRI; pri--; )
963 if (pendingcnt [pri])
964 return 1;
965
966 return 0;
967} 1273}
968 1274
969static void 1275void inline_speed
970call_pending (EV_P) 1276call_pending (EV_P)
971{ 1277{
972 int pri; 1278 int pri;
973 1279
974 for (pri = NUMPRI; pri--; ) 1280 for (pri = NUMPRI; pri--; )
975 while (pendingcnt [pri]) 1281 while (pendingcnt [pri])
976 { 1282 {
977 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1283 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978 1284
979 if (p->w) 1285 if (expect_true (p->w))
980 { 1286 {
1287 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1288
981 p->w->pending = 0; 1289 p->w->pending = 0;
982 EV_CB_INVOKE (p->w, p->events); 1290 EV_CB_INVOKE (p->w, p->events);
983 } 1291 }
984 } 1292 }
985} 1293}
986 1294
987static void 1295void inline_size
988timers_reify (EV_P) 1296timers_reify (EV_P)
989{ 1297{
990 while (timercnt && ((WT)timers [0])->at <= mn_now) 1298 while (timercnt && ((WT)timers [0])->at <= mn_now)
991 { 1299 {
992 struct ev_timer *w = timers [0]; 1300 ev_timer *w = (ev_timer *)timers [0];
993 1301
994 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1302 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995 1303
996 /* first reschedule or stop timer */ 1304 /* first reschedule or stop timer */
997 if (w->repeat) 1305 if (w->repeat)
998 { 1306 {
999 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.));
1000 1308
1001 ((WT)w)->at += w->repeat; 1309 ((WT)w)->at += w->repeat;
1002 if (((WT)w)->at < mn_now) 1310 if (((WT)w)->at < mn_now)
1003 ((WT)w)->at = mn_now; 1311 ((WT)w)->at = mn_now;
1004 1312
1005 downheap ((WT *)timers, timercnt, 0); 1313 downheap (timers, timercnt, 0);
1006 } 1314 }
1007 else 1315 else
1008 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1009 1317
1010 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1318 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011 } 1319 }
1012} 1320}
1013 1321
1014#if EV_PERIODICS 1322#if EV_PERIODIC_ENABLE
1015static void 1323void inline_size
1016periodics_reify (EV_P) 1324periodics_reify (EV_P)
1017{ 1325{
1018 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1326 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019 { 1327 {
1020 struct ev_periodic *w = periodics [0]; 1328 ev_periodic *w = (ev_periodic *)periodics [0];
1021 1329
1022 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1330 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023 1331
1024 /* first reschedule or stop timer */ 1332 /* first reschedule or stop timer */
1025 if (w->reschedule_cb) 1333 if (w->reschedule_cb)
1026 { 1334 {
1027 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);
1028
1029 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));
1030 downheap ((WT *)periodics, periodiccnt, 0); 1337 downheap (periodics, periodiccnt, 0);
1031 } 1338 }
1032 else if (w->interval) 1339 else if (w->interval)
1033 { 1340 {
1034 ((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;
1035 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));
1036 downheap ((WT *)periodics, periodiccnt, 0); 1344 downheap (periodics, periodiccnt, 0);
1037 } 1345 }
1038 else 1346 else
1039 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1347 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1040 1348
1041 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1349 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042 } 1350 }
1043} 1351}
1044 1352
1045static void 1353static void noinline
1046periodics_reschedule (EV_P) 1354periodics_reschedule (EV_P)
1047{ 1355{
1048 int i; 1356 int i;
1049 1357
1050 /* adjust periodics after time jump */ 1358 /* adjust periodics after time jump */
1051 for (i = 0; i < periodiccnt; ++i) 1359 for (i = 0; i < periodiccnt; ++i)
1052 { 1360 {
1053 struct ev_periodic *w = periodics [i]; 1361 ev_periodic *w = (ev_periodic *)periodics [i];
1054 1362
1055 if (w->reschedule_cb) 1363 if (w->reschedule_cb)
1056 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057 else if (w->interval) 1365 else if (w->interval)
1058 ((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;
1059 } 1367 }
1060 1368
1061 /* now rebuild the heap */ 1369 /* now rebuild the heap */
1062 for (i = periodiccnt >> 1; i--; ) 1370 for (i = periodiccnt >> 1; i--; )
1063 downheap ((WT *)periodics, periodiccnt, i); 1371 downheap (periodics, periodiccnt, i);
1064} 1372}
1065#endif 1373#endif
1066 1374
1067inline int 1375#if EV_IDLE_ENABLE
1068time_update_monotonic (EV_P) 1376void inline_size
1377idle_reify (EV_P)
1069{ 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
1070 mn_now = get_clock (); 1408 mn_now = get_clock ();
1071 1409
1410 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1411 /* interpolate in the meantime */
1072 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1412 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1073 { 1413 {
1074 ev_rt_now = rtmn_diff + mn_now; 1414 ev_rt_now = rtmn_diff + mn_now;
1075 return 0; 1415 return;
1076 } 1416 }
1077 else 1417
1078 {
1079 now_floor = mn_now; 1418 now_floor = mn_now;
1080 ev_rt_now = ev_time (); 1419 ev_rt_now = ev_time ();
1081 return 1;
1082 }
1083}
1084 1420
1085static void 1421 /* loop a few times, before making important decisions.
1086time_update (EV_P) 1422 * on the choice of "4": one iteration isn't enough,
1087{ 1423 * in case we get preempted during the calls to
1088 int i; 1424 * ev_time and get_clock. a second call is almost guaranteed
1089 1425 * to succeed in that case, though. and looping a few more times
1090#if EV_USE_MONOTONIC 1426 * doesn't hurt either as we only do this on time-jumps or
1091 if (expect_true (have_monotonic)) 1427 * in the unlikely event of having been preempted here.
1092 { 1428 */
1093 if (time_update_monotonic (EV_A)) 1429 for (i = 4; --i; )
1094 { 1430 {
1095 ev_tstamp odiff = rtmn_diff;
1096
1097 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1098 {
1099 rtmn_diff = ev_rt_now - mn_now; 1431 rtmn_diff = ev_rt_now - mn_now;
1100 1432
1101 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1433 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102 return; /* all is well */ 1434 return; /* all is well */
1103 1435
1104 ev_rt_now = ev_time (); 1436 ev_rt_now = ev_time ();
1105 mn_now = get_clock (); 1437 mn_now = get_clock ();
1106 now_floor = mn_now; 1438 now_floor = mn_now;
1107 } 1439 }
1108 1440
1109# if EV_PERIODICS 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
1110 periodics_reschedule (EV_A); 1455 periodics_reschedule (EV_A);
1111# endif 1456#endif
1112 /* no timer adjustment, as the monotonic clock doesn't jump */
1113 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114 }
1115 }
1116 else
1117#endif
1118 {
1119 ev_rt_now = ev_time ();
1120
1121 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1122 {
1123#if EV_PERIODICS
1124 periodics_reschedule (EV_A);
1125#endif
1126
1127 /* 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 */
1128 for (i = 0; i < timercnt; ++i) 1458 for (i = 0; i < timercnt; ++i)
1129 ((WT)timers [i])->at += ev_rt_now - mn_now; 1459 ((WT)timers [i])->at += ev_rt_now - mn_now;
1130 } 1460 }
1131 1461
1132 mn_now = ev_rt_now; 1462 mn_now = ev_rt_now;
… …
1148static int loop_done; 1478static int loop_done;
1149 1479
1150void 1480void
1151ev_loop (EV_P_ int flags) 1481ev_loop (EV_P_ int flags)
1152{ 1482{
1153 double block;
1154 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 */
1155 1488
1156 do 1489 do
1157 { 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
1158 /* queue check watchers (and execute them) */ 1510 /* queue prepare watchers (and execute them) */
1159 if (expect_false (preparecnt)) 1511 if (expect_false (preparecnt))
1160 { 1512 {
1161 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1513 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162 call_pending (EV_A); 1514 call_pending (EV_A);
1163 } 1515 }
1164 1516
1517 if (expect_false (!activecnt))
1518 break;
1519
1165 /* we might have forked, so reify kernel state if necessary */ 1520 /* we might have forked, so reify kernel state if necessary */
1166 if (expect_false (postfork)) 1521 if (expect_false (postfork))
1167 loop_fork (EV_A); 1522 loop_fork (EV_A);
1168 1523
1169 /* update fd-related kernel structures */ 1524 /* update fd-related kernel structures */
1170 fd_reify (EV_A); 1525 fd_reify (EV_A);
1171 1526
1172 /* calculate blocking time */ 1527 /* calculate blocking time */
1528 {
1529 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.;
1173 1531
1174 /* we only need this for !monotonic clock or timers, but as we basically 1532 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1175 always have timers, we just calculate it always */
1176#if EV_USE_MONOTONIC
1177 if (expect_true (have_monotonic))
1178 time_update_monotonic (EV_A);
1179 else
1180#endif
1181 { 1533 {
1182 ev_rt_now = ev_time (); 1534 /* update time to cancel out callback processing overhead */
1183 mn_now = ev_rt_now; 1535 time_update (EV_A_ 1e100);
1184 }
1185 1536
1186 if (flags & EVLOOP_NONBLOCK || idlecnt)
1187 block = 0.;
1188 else
1189 {
1190 block = MAX_BLOCKTIME; 1537 waittime = MAX_BLOCKTIME;
1191 1538
1192 if (timercnt) 1539 if (timercnt)
1193 { 1540 {
1194 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195 if (block > to) block = to; 1542 if (waittime > to) waittime = to;
1196 } 1543 }
1197 1544
1198#if EV_PERIODICS 1545#if EV_PERIODIC_ENABLE
1199 if (periodiccnt) 1546 if (periodiccnt)
1200 { 1547 {
1201 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;
1202 if (block > to) block = to; 1549 if (waittime > to) waittime = to;
1203 } 1550 }
1204#endif 1551#endif
1205 1552
1206 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 }
1207 } 1566 }
1208 1567
1209 method_poll (EV_A_ block); 1568 ++loop_count;
1569 backend_poll (EV_A_ waittime);
1210 1570
1211 /* update ev_rt_now, do magic */ 1571 /* update ev_rt_now, do magic */
1212 time_update (EV_A); 1572 time_update (EV_A_ waittime + sleeptime);
1573 }
1213 1574
1214 /* queue pending timers and reschedule them */ 1575 /* queue pending timers and reschedule them */
1215 timers_reify (EV_A); /* relative timers called last */ 1576 timers_reify (EV_A); /* relative timers called last */
1216#if EV_PERIODICS 1577#if EV_PERIODIC_ENABLE
1217 periodics_reify (EV_A); /* absolute timers called first */ 1578 periodics_reify (EV_A); /* absolute timers called first */
1218#endif 1579#endif
1219 1580
1581#if EV_IDLE_ENABLE
1220 /* queue idle watchers unless io or timers are pending */ 1582 /* queue idle watchers unless other events are pending */
1221 if (idlecnt && !any_pending (EV_A)) 1583 idle_reify (EV_A);
1222 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1584#endif
1223 1585
1224 /* queue check watchers, to be executed first */ 1586 /* queue check watchers, to be executed first */
1225 if (checkcnt) 1587 if (expect_false (checkcnt))
1226 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1588 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227 1589
1228 call_pending (EV_A); 1590 call_pending (EV_A);
1591
1229 } 1592 }
1230 while (activecnt && !loop_done); 1593 while (expect_true (activecnt && !loop_done));
1231 1594
1232 if (loop_done != 2) 1595 if (loop_done == EVUNLOOP_ONE)
1233 loop_done = 0; 1596 loop_done = EVUNLOOP_CANCEL;
1234} 1597}
1235 1598
1236void 1599void
1237ev_unloop (EV_P_ int how) 1600ev_unloop (EV_P_ int how)
1238{ 1601{
1239 loop_done = how; 1602 loop_done = how;
1240} 1603}
1241 1604
1242/*****************************************************************************/ 1605/*****************************************************************************/
1243 1606
1244inline void 1607void inline_size
1245wlist_add (WL *head, WL elem) 1608wlist_add (WL *head, WL elem)
1246{ 1609{
1247 elem->next = *head; 1610 elem->next = *head;
1248 *head = elem; 1611 *head = elem;
1249} 1612}
1250 1613
1251inline void 1614void inline_size
1252wlist_del (WL *head, WL elem) 1615wlist_del (WL *head, WL elem)
1253{ 1616{
1254 while (*head) 1617 while (*head)
1255 { 1618 {
1256 if (*head == elem) 1619 if (*head == elem)
… …
1261 1624
1262 head = &(*head)->next; 1625 head = &(*head)->next;
1263 } 1626 }
1264} 1627}
1265 1628
1266inline void 1629void inline_speed
1267ev_clear_pending (EV_P_ W w) 1630clear_pending (EV_P_ W w)
1268{ 1631{
1269 if (w->pending) 1632 if (w->pending)
1270 { 1633 {
1271 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1634 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272 w->pending = 0; 1635 w->pending = 0;
1273 } 1636 }
1274} 1637}
1275 1638
1276inline 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
1277ev_start (EV_P_ W w, int active) 1666ev_start (EV_P_ W w, int active)
1278{ 1667{
1279 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1668 pri_adjust (EV_A_ w);
1280 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281
1282 w->active = active; 1669 w->active = active;
1283 ev_ref (EV_A); 1670 ev_ref (EV_A);
1284} 1671}
1285 1672
1286inline void 1673void inline_size
1287ev_stop (EV_P_ W w) 1674ev_stop (EV_P_ W w)
1288{ 1675{
1289 ev_unref (EV_A); 1676 ev_unref (EV_A);
1290 w->active = 0; 1677 w->active = 0;
1291} 1678}
1292 1679
1293/*****************************************************************************/ 1680/*****************************************************************************/
1294 1681
1295void 1682void noinline
1296ev_io_start (EV_P_ struct ev_io *w) 1683ev_io_start (EV_P_ ev_io *w)
1297{ 1684{
1298 int fd = w->fd; 1685 int fd = w->fd;
1299 1686
1300 if (ev_is_active (w)) 1687 if (expect_false (ev_is_active (w)))
1301 return; 1688 return;
1302 1689
1303 assert (("ev_io_start called with negative fd", fd >= 0)); 1690 assert (("ev_io_start called with negative fd", fd >= 0));
1304 1691
1305 ev_start (EV_A_ (W)w, 1); 1692 ev_start (EV_A_ (W)w, 1);
1306 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1693 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1307 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1694 wlist_add (&anfds[fd].head, (WL)w);
1308 1695
1309 fd_change (EV_A_ fd); 1696 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1697 w->events &= ~EV_IOFDSET;
1310} 1698}
1311 1699
1312void 1700void noinline
1313ev_io_stop (EV_P_ struct ev_io *w) 1701ev_io_stop (EV_P_ ev_io *w)
1314{ 1702{
1315 ev_clear_pending (EV_A_ (W)w); 1703 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1704 if (expect_false (!ev_is_active (w)))
1317 return; 1705 return;
1318 1706
1319 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));
1320 1708
1321 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1709 wlist_del (&anfds[w->fd].head, (WL)w);
1322 ev_stop (EV_A_ (W)w); 1710 ev_stop (EV_A_ (W)w);
1323 1711
1324 fd_change (EV_A_ w->fd); 1712 fd_change (EV_A_ w->fd, 1);
1325} 1713}
1326 1714
1327void 1715void noinline
1328ev_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)
1329{ 1759{
1330 if (ev_is_active (w)) 1760 if (ev_is_active (w))
1331 return;
1332
1333 ((WT)w)->at += mn_now;
1334
1335 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336
1337 ev_start (EV_A_ (W)w, ++timercnt);
1338 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1339 timers [timercnt - 1] = w;
1340 upheap ((WT *)timers, timercnt - 1);
1341
1342 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343}
1344
1345void
1346ev_timer_stop (EV_P_ struct ev_timer *w)
1347{
1348 ev_clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w))
1350 return;
1351
1352 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1353
1354 if (((W)w)->active < timercnt--)
1355 {
1356 timers [((W)w)->active - 1] = timers [timercnt];
1357 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1358 }
1359
1360 ((WT)w)->at -= mn_now;
1361
1362 ev_stop (EV_A_ (W)w);
1363}
1364
1365void
1366ev_timer_again (EV_P_ struct ev_timer *w)
1367{
1368 if (ev_is_active (w))
1369 { 1761 {
1370 if (w->repeat) 1762 if (w->repeat)
1763 {
1764 ((WT)w)->at = mn_now + w->repeat;
1371 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1765 adjustheap (timers, timercnt, ((W)w)->active - 1);
1766 }
1372 else 1767 else
1373 ev_timer_stop (EV_A_ w); 1768 ev_timer_stop (EV_A_ w);
1374 } 1769 }
1375 else if (w->repeat) 1770 else if (w->repeat)
1771 {
1772 w->at = w->repeat;
1376 ev_timer_start (EV_A_ w); 1773 ev_timer_start (EV_A_ w);
1774 }
1377} 1775}
1378 1776
1379#if EV_PERIODICS 1777#if EV_PERIODIC_ENABLE
1380void 1778void noinline
1381ev_periodic_start (EV_P_ struct ev_periodic *w) 1779ev_periodic_start (EV_P_ ev_periodic *w)
1382{ 1780{
1383 if (ev_is_active (w)) 1781 if (expect_false (ev_is_active (w)))
1384 return; 1782 return;
1385 1783
1386 if (w->reschedule_cb) 1784 if (w->reschedule_cb)
1387 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1785 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388 else if (w->interval) 1786 else if (w->interval)
1389 { 1787 {
1390 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.));
1391 /* 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 */
1392 ((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;
1393 } 1791 }
1792 else
1793 ((WT)w)->at = w->offset;
1394 1794
1395 ev_start (EV_A_ (W)w, ++periodiccnt); 1795 ev_start (EV_A_ (W)w, ++periodiccnt);
1396 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1796 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1397 periodics [periodiccnt - 1] = w; 1797 periodics [periodiccnt - 1] = (WT)w;
1398 upheap ((WT *)periodics, periodiccnt - 1); 1798 upheap (periodics, periodiccnt - 1);
1399 1799
1400 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1800 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1401} 1801}
1402 1802
1403void 1803void noinline
1404ev_periodic_stop (EV_P_ struct ev_periodic *w) 1804ev_periodic_stop (EV_P_ ev_periodic *w)
1405{ 1805{
1406 ev_clear_pending (EV_A_ (W)w); 1806 clear_pending (EV_A_ (W)w);
1407 if (!ev_is_active (w)) 1807 if (expect_false (!ev_is_active (w)))
1408 return; 1808 return;
1409 1809
1410 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1810 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1411 1811
1412 if (((W)w)->active < periodiccnt--) 1812 {
1813 int active = ((W)w)->active;
1814
1815 if (expect_true (--active < --periodiccnt))
1413 { 1816 {
1414 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1817 periodics [active] = periodics [periodiccnt];
1415 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1818 adjustheap (periodics, periodiccnt, active);
1416 } 1819 }
1820 }
1417 1821
1418 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1419} 1823}
1420 1824
1421void 1825void noinline
1422ev_periodic_again (EV_P_ struct ev_periodic *w) 1826ev_periodic_again (EV_P_ ev_periodic *w)
1423{ 1827{
1424 /* TODO: use adjustheap and recalculation */ 1828 /* TODO: use adjustheap and recalculation */
1425 ev_periodic_stop (EV_A_ w); 1829 ev_periodic_stop (EV_A_ w);
1426 ev_periodic_start (EV_A_ w); 1830 ev_periodic_start (EV_A_ w);
1427} 1831}
1428#endif 1832#endif
1429 1833
1430void
1431ev_idle_start (EV_P_ struct ev_idle *w)
1432{
1433 if (ev_is_active (w))
1434 return;
1435
1436 ev_start (EV_A_ (W)w, ++idlecnt);
1437 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438 idles [idlecnt - 1] = w;
1439}
1440
1441void
1442ev_idle_stop (EV_P_ struct ev_idle *w)
1443{
1444 ev_clear_pending (EV_A_ (W)w);
1445 if (ev_is_active (w))
1446 return;
1447
1448 idles [((W)w)->active - 1] = idles [--idlecnt];
1449 ev_stop (EV_A_ (W)w);
1450}
1451
1452void
1453ev_prepare_start (EV_P_ struct ev_prepare *w)
1454{
1455 if (ev_is_active (w))
1456 return;
1457
1458 ev_start (EV_A_ (W)w, ++preparecnt);
1459 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460 prepares [preparecnt - 1] = w;
1461}
1462
1463void
1464ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465{
1466 ev_clear_pending (EV_A_ (W)w);
1467 if (ev_is_active (w))
1468 return;
1469
1470 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471 ev_stop (EV_A_ (W)w);
1472}
1473
1474void
1475ev_check_start (EV_P_ struct ev_check *w)
1476{
1477 if (ev_is_active (w))
1478 return;
1479
1480 ev_start (EV_A_ (W)w, ++checkcnt);
1481 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482 checks [checkcnt - 1] = w;
1483}
1484
1485void
1486ev_check_stop (EV_P_ struct ev_check *w)
1487{
1488 ev_clear_pending (EV_A_ (W)w);
1489 if (!ev_is_active (w))
1490 return;
1491
1492 checks [((W)w)->active - 1] = checks [--checkcnt];
1493 ev_stop (EV_A_ (W)w);
1494}
1495
1496#ifndef SA_RESTART 1834#ifndef SA_RESTART
1497# define SA_RESTART 0 1835# define SA_RESTART 0
1498#endif 1836#endif
1499 1837
1500void 1838void noinline
1501ev_signal_start (EV_P_ struct ev_signal *w) 1839ev_signal_start (EV_P_ ev_signal *w)
1502{ 1840{
1503#if EV_MULTIPLICITY 1841#if EV_MULTIPLICITY
1504 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));
1505#endif 1843#endif
1506 if (ev_is_active (w)) 1844 if (expect_false (ev_is_active (w)))
1507 return; 1845 return;
1508 1846
1509 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));
1510 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
1511 ev_start (EV_A_ (W)w, 1); 1863 ev_start (EV_A_ (W)w, 1);
1512 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1864 wlist_add (&signals [w->signum - 1].head, (WL)w);
1514 1865
1515 if (!((WL)w)->next) 1866 if (!((WL)w)->next)
1516 { 1867 {
1517#if WIN32 1868#if _WIN32
1518 signal (w->signum, sighandler); 1869 signal (w->signum, sighandler);
1519#else 1870#else
1520 struct sigaction sa; 1871 struct sigaction sa;
1521 sa.sa_handler = sighandler; 1872 sa.sa_handler = sighandler;
1522 sigfillset (&sa.sa_mask); 1873 sigfillset (&sa.sa_mask);
… …
1524 sigaction (w->signum, &sa, 0); 1875 sigaction (w->signum, &sa, 0);
1525#endif 1876#endif
1526 } 1877 }
1527} 1878}
1528 1879
1529void 1880void noinline
1530ev_signal_stop (EV_P_ struct ev_signal *w) 1881ev_signal_stop (EV_P_ ev_signal *w)
1531{ 1882{
1532 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1533 if (!ev_is_active (w)) 1884 if (expect_false (!ev_is_active (w)))
1534 return; 1885 return;
1535 1886
1536 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1887 wlist_del (&signals [w->signum - 1].head, (WL)w);
1537 ev_stop (EV_A_ (W)w); 1888 ev_stop (EV_A_ (W)w);
1538 1889
1539 if (!signals [w->signum - 1].head) 1890 if (!signals [w->signum - 1].head)
1540 signal (w->signum, SIG_DFL); 1891 signal (w->signum, SIG_DFL);
1541} 1892}
1542 1893
1543void 1894void
1544ev_child_start (EV_P_ struct ev_child *w) 1895ev_child_start (EV_P_ ev_child *w)
1545{ 1896{
1546#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1547 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));
1548#endif 1899#endif
1549 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1550 return; 1901 return;
1551 1902
1552 ev_start (EV_A_ (W)w, 1); 1903 ev_start (EV_A_ (W)w, 1);
1553 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1904 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554} 1905}
1555 1906
1556void 1907void
1557ev_child_stop (EV_P_ struct ev_child *w) 1908ev_child_stop (EV_P_ ev_child *w)
1558{ 1909{
1559 ev_clear_pending (EV_A_ (W)w); 1910 clear_pending (EV_A_ (W)w);
1560 if (!ev_is_active (w)) 1911 if (expect_false (!ev_is_active (w)))
1561 return; 1912 return;
1562 1913
1563 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1914 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564 ev_stop (EV_A_ (W)w); 1915 ev_stop (EV_A_ (W)w);
1565} 1916}
1566 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
1567/*****************************************************************************/ 2371/*****************************************************************************/
1568 2372
1569struct ev_once 2373struct ev_once
1570{ 2374{
1571 struct ev_io io; 2375 ev_io io;
1572 struct ev_timer to; 2376 ev_timer to;
1573 void (*cb)(int revents, void *arg); 2377 void (*cb)(int revents, void *arg);
1574 void *arg; 2378 void *arg;
1575}; 2379};
1576 2380
1577static void 2381static void
… …
1586 2390
1587 cb (revents, arg); 2391 cb (revents, arg);
1588} 2392}
1589 2393
1590static void 2394static void
1591once_cb_io (EV_P_ struct ev_io *w, int revents) 2395once_cb_io (EV_P_ ev_io *w, int revents)
1592{ 2396{
1593 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);
1594} 2398}
1595 2399
1596static void 2400static void
1597once_cb_to (EV_P_ struct ev_timer *w, int revents) 2401once_cb_to (EV_P_ ev_timer *w, int revents)
1598{ 2402{
1599 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);
1600} 2404}
1601 2405
1602void 2406void
1603ev_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)
1604{ 2408{
1605 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));
1606 2410
1607 if (!once) 2411 if (expect_false (!once))
2412 {
1608 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2413 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609 else 2414 return;
1610 { 2415 }
2416
1611 once->cb = cb; 2417 once->cb = cb;
1612 once->arg = arg; 2418 once->arg = arg;
1613 2419
1614 ev_init (&once->io, once_cb_io); 2420 ev_init (&once->io, once_cb_io);
1615 if (fd >= 0) 2421 if (fd >= 0)
1616 { 2422 {
1617 ev_io_set (&once->io, fd, events); 2423 ev_io_set (&once->io, fd, events);
1618 ev_io_start (EV_A_ &once->io); 2424 ev_io_start (EV_A_ &once->io);
1619 } 2425 }
1620 2426
1621 ev_init (&once->to, once_cb_to); 2427 ev_init (&once->to, once_cb_to);
1622 if (timeout >= 0.) 2428 if (timeout >= 0.)
1623 { 2429 {
1624 ev_timer_set (&once->to, timeout, 0.); 2430 ev_timer_set (&once->to, timeout, 0.);
1625 ev_timer_start (EV_A_ &once->to); 2431 ev_timer_start (EV_A_ &once->to);
1626 }
1627 } 2432 }
1628} 2433}
2434
2435#if EV_MULTIPLICITY
2436 #include "ev_wrap.h"
2437#endif
1629 2438
1630#ifdef __cplusplus 2439#ifdef __cplusplus
1631} 2440}
1632#endif 2441#endif
1633 2442

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