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Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 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
291#ifdef _WIN32
166#include "ev_win32.c" 292# include "ev_win32.c"
293#endif
167 294
168/*****************************************************************************/ 295/*****************************************************************************/
169 296
170static void (*syserr_cb)(const char *msg); 297static void (*syserr_cb)(const char *msg);
171 298
299void
172void ev_set_syserr_cb (void (*cb)(const char *msg)) 300ev_set_syserr_cb (void (*cb)(const char *msg))
173{ 301{
174 syserr_cb = cb; 302 syserr_cb = cb;
175} 303}
176 304
177static void 305static void noinline
178syserr (const char *msg) 306syserr (const char *msg)
179{ 307{
180 if (!msg) 308 if (!msg)
181 msg = "(libev) system error"; 309 msg = "(libev) system error";
182 310
… …
189 } 317 }
190} 318}
191 319
192static void *(*alloc)(void *ptr, long size); 320static void *(*alloc)(void *ptr, long size);
193 321
322void
194void ev_set_allocator (void *(*cb)(void *ptr, long size)) 323ev_set_allocator (void *(*cb)(void *ptr, long size))
195{ 324{
196 alloc = cb; 325 alloc = cb;
197} 326}
198 327
199static void * 328inline_speed void *
200ev_realloc (void *ptr, long size) 329ev_realloc (void *ptr, long size)
201{ 330{
202 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 331 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
203 332
204 if (!ptr && size) 333 if (!ptr && size)
… …
218typedef struct 347typedef struct
219{ 348{
220 WL head; 349 WL head;
221 unsigned char events; 350 unsigned char events;
222 unsigned char reify; 351 unsigned char reify;
352#if EV_SELECT_IS_WINSOCKET
353 SOCKET handle;
354#endif
223} ANFD; 355} ANFD;
224 356
225typedef struct 357typedef struct
226{ 358{
227 W w; 359 W w;
228 int events; 360 int events;
229} ANPENDING; 361} ANPENDING;
230 362
363#if EV_USE_INOTIFY
364typedef struct
365{
366 WL head;
367} ANFS;
368#endif
369
231#if EV_MULTIPLICITY 370#if EV_MULTIPLICITY
232 371
233 struct ev_loop 372 struct ev_loop
234 { 373 {
235 ev_tstamp ev_rt_now; 374 ev_tstamp ev_rt_now;
375 #define ev_rt_now ((loop)->ev_rt_now)
236 #define VAR(name,decl) decl; 376 #define VAR(name,decl) decl;
237 #include "ev_vars.h" 377 #include "ev_vars.h"
238 #undef VAR 378 #undef VAR
239 }; 379 };
240 #include "ev_wrap.h" 380 #include "ev_wrap.h"
241 381
242 struct ev_loop default_loop_struct; 382 static struct ev_loop default_loop_struct;
243 static struct ev_loop *default_loop; 383 struct ev_loop *ev_default_loop_ptr;
244 384
245#else 385#else
246 386
247 ev_tstamp ev_rt_now; 387 ev_tstamp ev_rt_now;
248 #define VAR(name,decl) static decl; 388 #define VAR(name,decl) static decl;
249 #include "ev_vars.h" 389 #include "ev_vars.h"
250 #undef VAR 390 #undef VAR
251 391
252 static int default_loop; 392 static int ev_default_loop_ptr;
253 393
254#endif 394#endif
255 395
256/*****************************************************************************/ 396/*****************************************************************************/
257 397
… …
267 gettimeofday (&tv, 0); 407 gettimeofday (&tv, 0);
268 return tv.tv_sec + tv.tv_usec * 1e-6; 408 return tv.tv_sec + tv.tv_usec * 1e-6;
269#endif 409#endif
270} 410}
271 411
272inline ev_tstamp 412ev_tstamp inline_size
273get_clock (void) 413get_clock (void)
274{ 414{
275#if EV_USE_MONOTONIC 415#if EV_USE_MONOTONIC
276 if (expect_true (have_monotonic)) 416 if (expect_true (have_monotonic))
277 { 417 {
… …
290{ 430{
291 return ev_rt_now; 431 return ev_rt_now;
292} 432}
293#endif 433#endif
294 434
295#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}
296 489
297#define array_needsize(type,base,cur,cnt,init) \ 490#define array_needsize(type,base,cur,cnt,init) \
298 if (expect_false ((cnt) > cur)) \ 491 if (expect_false ((cnt) > (cur))) \
299 { \ 492 { \
300 int newcnt = cur; \ 493 int ocur_ = (cur); \
301 do \ 494 (base) = (type *)array_realloc \
302 { \ 495 (sizeof (type), (base), &(cur), (cnt)); \
303 newcnt = array_roundsize (type, newcnt << 1); \ 496 init ((base) + (ocur_), (cur) - ocur_); \
304 } \
305 while ((cnt) > newcnt); \
306 \
307 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
308 init (base + cur, newcnt - cur); \
309 cur = newcnt; \
310 } 497 }
311 498
499#if 0
312#define array_slim(type,stem) \ 500#define array_slim(type,stem) \
313 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 501 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
314 { \ 502 { \
315 stem ## max = array_roundsize (stem ## cnt >> 1); \ 503 stem ## max = array_roundsize (stem ## cnt >> 1); \
316 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 504 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 505 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318 } 506 }
319 507#endif
320/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322#define array_free_microshit(stem) \
323 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324 508
325#define array_free(stem, idx) \ 509#define array_free(stem, idx) \
326 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;
327 511
328/*****************************************************************************/ 512/*****************************************************************************/
329 513
330static 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
331anfds_init (ANFD *base, int count) 543anfds_init (ANFD *base, int count)
332{ 544{
333 while (count--) 545 while (count--)
334 { 546 {
335 base->head = 0; 547 base->head = 0;
… …
338 550
339 ++base; 551 ++base;
340 } 552 }
341} 553}
342 554
343void 555void inline_speed
344ev_feed_event (EV_P_ void *w, int revents)
345{
346 W w_ = (W)w;
347
348 if (w_->pending)
349 {
350 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
351 return;
352 }
353
354 w_->pending = ++pendingcnt [ABSPRI (w_)];
355 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
356 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358}
359
360static void
361queue_events (EV_P_ W *events, int eventcnt, int type)
362{
363 int i;
364
365 for (i = 0; i < eventcnt; ++i)
366 ev_feed_event (EV_A_ events [i], type);
367}
368
369inline void
370fd_event (EV_P_ int fd, int revents) 556fd_event (EV_P_ int fd, int revents)
371{ 557{
372 ANFD *anfd = anfds + fd; 558 ANFD *anfd = anfds + fd;
373 struct ev_io *w; 559 ev_io *w;
374 560
375 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)
376 { 562 {
377 int ev = w->events & revents; 563 int ev = w->events & revents;
378 564
379 if (ev) 565 if (ev)
380 ev_feed_event (EV_A_ (W)w, ev); 566 ev_feed_event (EV_A_ (W)w, ev);
… …
382} 568}
383 569
384void 570void
385ev_feed_fd_event (EV_P_ int fd, int revents) 571ev_feed_fd_event (EV_P_ int fd, int revents)
386{ 572{
573 if (fd >= 0 && fd < anfdmax)
387 fd_event (EV_A_ fd, revents); 574 fd_event (EV_A_ fd, revents);
388} 575}
389 576
390/*****************************************************************************/ 577void inline_size
391
392static void
393fd_reify (EV_P) 578fd_reify (EV_P)
394{ 579{
395 int i; 580 int i;
396 581
397 for (i = 0; i < fdchangecnt; ++i) 582 for (i = 0; i < fdchangecnt; ++i)
398 { 583 {
399 int fd = fdchanges [i]; 584 int fd = fdchanges [i];
400 ANFD *anfd = anfds + fd; 585 ANFD *anfd = anfds + fd;
401 struct ev_io *w; 586 ev_io *w;
402 587
403 int events = 0; 588 unsigned char events = 0;
404 589
405 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)
406 events |= w->events; 591 events |= (unsigned char)w->events;
407 592
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
408 anfd->reify = 0; 606 anfd->reify = 0;
409
410 method_modify (EV_A_ fd, anfd->events, events);
411 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 }
412 } 612 }
413 613
414 fdchangecnt = 0; 614 fdchangecnt = 0;
415} 615}
416 616
417static void 617void inline_size
418fd_change (EV_P_ int fd) 618fd_change (EV_P_ int fd, int flags)
419{ 619{
420 if (anfds [fd].reify) 620 unsigned char reify = anfds [fd].reify;
421 return;
422
423 anfds [fd].reify = 1; 621 anfds [fd].reify |= flags;
424 622
623 if (expect_true (!reify))
624 {
425 ++fdchangecnt; 625 ++fdchangecnt;
426 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 626 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427 fdchanges [fdchangecnt - 1] = fd; 627 fdchanges [fdchangecnt - 1] = fd;
628 }
428} 629}
429 630
430static void 631void inline_speed
431fd_kill (EV_P_ int fd) 632fd_kill (EV_P_ int fd)
432{ 633{
433 struct ev_io *w; 634 ev_io *w;
434 635
435 while ((w = (struct ev_io *)anfds [fd].head)) 636 while ((w = (ev_io *)anfds [fd].head))
436 { 637 {
437 ev_io_stop (EV_A_ w); 638 ev_io_stop (EV_A_ w);
438 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);
439 } 640 }
440} 641}
441 642
442static int 643int inline_size
443fd_valid (int fd) 644fd_valid (int fd)
444{ 645{
445#ifdef WIN32 646#ifdef _WIN32
446 return !!win32_get_osfhandle (fd); 647 return _get_osfhandle (fd) != -1;
447#else 648#else
448 return fcntl (fd, F_GETFD) != -1; 649 return fcntl (fd, F_GETFD) != -1;
449#endif 650#endif
450} 651}
451 652
452/* called on EBADF to verify fds */ 653/* called on EBADF to verify fds */
453static void 654static void noinline
454fd_ebadf (EV_P) 655fd_ebadf (EV_P)
455{ 656{
456 int fd; 657 int fd;
457 658
458 for (fd = 0; fd < anfdmax; ++fd) 659 for (fd = 0; fd < anfdmax; ++fd)
… …
460 if (!fd_valid (fd) == -1 && errno == EBADF) 661 if (!fd_valid (fd) == -1 && errno == EBADF)
461 fd_kill (EV_A_ fd); 662 fd_kill (EV_A_ fd);
462} 663}
463 664
464/* 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 */
465static void 666static void noinline
466fd_enomem (EV_P) 667fd_enomem (EV_P)
467{ 668{
468 int fd; 669 int fd;
469 670
470 for (fd = anfdmax; fd--; ) 671 for (fd = anfdmax; fd--; )
… …
473 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
474 return; 675 return;
475 } 676 }
476} 677}
477 678
478/* 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 */
479static void 680static void noinline
480fd_rearm_all (EV_P) 681fd_rearm_all (EV_P)
481{ 682{
482 int fd; 683 int fd;
483 684
484 /* this should be highly optimised to not do anything but set a flag */
485 for (fd = 0; fd < anfdmax; ++fd) 685 for (fd = 0; fd < anfdmax; ++fd)
486 if (anfds [fd].events) 686 if (anfds [fd].events)
487 { 687 {
488 anfds [fd].events = 0; 688 anfds [fd].events = 0;
489 fd_change (EV_A_ fd); 689 fd_change (EV_A_ fd, EV_IOFDSET | 1);
490 } 690 }
491} 691}
492 692
493/*****************************************************************************/ 693/*****************************************************************************/
494 694
495static void 695void inline_speed
496upheap (WT *heap, int k) 696upheap (WT *heap, int k)
497{ 697{
498 WT w = heap [k]; 698 WT w = heap [k];
499 699
500 while (k && heap [k >> 1]->at > w->at) 700 while (k)
501 { 701 {
702 int p = (k - 1) >> 1;
703
704 if (heap [p]->at <= w->at)
705 break;
706
502 heap [k] = heap [k >> 1]; 707 heap [k] = heap [p];
503 ((W)heap [k])->active = k + 1; 708 ((W)heap [k])->active = k + 1;
504 k >>= 1; 709 k = p;
505 } 710 }
506 711
507 heap [k] = w; 712 heap [k] = w;
508 ((W)heap [k])->active = k + 1; 713 ((W)heap [k])->active = k + 1;
509
510} 714}
511 715
512static void 716void inline_speed
513downheap (WT *heap, int N, int k) 717downheap (WT *heap, int N, int k)
514{ 718{
515 WT w = heap [k]; 719 WT w = heap [k];
516 720
517 while (k < (N >> 1)) 721 for (;;)
518 { 722 {
519 int j = k << 1; 723 int c = (k << 1) + 1;
520 724
521 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 725 if (c >= N)
522 ++j;
523
524 if (w->at <= heap [j]->at)
525 break; 726 break;
526 727
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
527 heap [k] = heap [j]; 734 heap [k] = heap [c];
528 ((W)heap [k])->active = k + 1; 735 ((W)heap [k])->active = k + 1;
736
529 k = j; 737 k = c;
530 } 738 }
531 739
532 heap [k] = w; 740 heap [k] = w;
533 ((W)heap [k])->active = k + 1; 741 ((W)heap [k])->active = k + 1;
534} 742}
535 743
536inline void 744void inline_size
537adjustheap (WT *heap, int N, int k, ev_tstamp at) 745adjustheap (WT *heap, int N, int k)
538{ 746{
539 ev_tstamp old_at = heap [k]->at; 747 upheap (heap, k);
540 heap [k]->at = at;
541
542 if (old_at < at)
543 downheap (heap, N, k); 748 downheap (heap, N, k);
544 else
545 upheap (heap, k);
546} 749}
547 750
548/*****************************************************************************/ 751/*****************************************************************************/
549 752
550typedef struct 753typedef struct
… …
556static ANSIG *signals; 759static ANSIG *signals;
557static int signalmax; 760static int signalmax;
558 761
559static int sigpipe [2]; 762static int sigpipe [2];
560static sig_atomic_t volatile gotsig; 763static sig_atomic_t volatile gotsig;
561static struct ev_io sigev; 764static ev_io sigev;
562 765
563static void 766void inline_size
564signals_init (ANSIG *base, int count) 767signals_init (ANSIG *base, int count)
565{ 768{
566 while (count--) 769 while (count--)
567 { 770 {
568 base->head = 0; 771 base->head = 0;
… …
573} 776}
574 777
575static void 778static void
576sighandler (int signum) 779sighandler (int signum)
577{ 780{
578#if WIN32 781#if _WIN32
579 signal (signum, sighandler); 782 signal (signum, sighandler);
580#endif 783#endif
581 784
582 signals [signum - 1].gotsig = 1; 785 signals [signum - 1].gotsig = 1;
583 786
584 if (!gotsig) 787 if (!gotsig)
585 { 788 {
586 int old_errno = errno; 789 int old_errno = errno;
587 gotsig = 1; 790 gotsig = 1;
588#ifdef WIN32
589 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590#else
591 write (sigpipe [1], &signum, 1); 791 write (sigpipe [1], &signum, 1);
592#endif
593 errno = old_errno; 792 errno = old_errno;
594 } 793 }
595} 794}
596 795
597void 796void noinline
598ev_feed_signal_event (EV_P_ int signum) 797ev_feed_signal_event (EV_P_ int signum)
599{ 798{
600 WL w; 799 WL w;
601 800
602#if EV_MULTIPLICITY 801#if EV_MULTIPLICITY
603 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));
604#endif 803#endif
605 804
606 --signum; 805 --signum;
607 806
608 if (signum < 0 || signum >= signalmax) 807 if (signum < 0 || signum >= signalmax)
… …
613 for (w = signals [signum].head; w; w = w->next) 812 for (w = signals [signum].head; w; w = w->next)
614 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615} 814}
616 815
617static void 816static void
618sigcb (EV_P_ struct ev_io *iow, int revents) 817sigcb (EV_P_ ev_io *iow, int revents)
619{ 818{
620 int signum; 819 int signum;
621 820
622#ifdef WIN32
623 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624#else
625 read (sigpipe [0], &revents, 1); 821 read (sigpipe [0], &revents, 1);
626#endif
627 gotsig = 0; 822 gotsig = 0;
628 823
629 for (signum = signalmax; signum--; ) 824 for (signum = signalmax; signum--; )
630 if (signals [signum].gotsig) 825 if (signals [signum].gotsig)
631 ev_feed_signal_event (EV_A_ signum + 1); 826 ev_feed_signal_event (EV_A_ signum + 1);
632} 827}
633 828
634static 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
635siginit (EV_P) 842siginit (EV_P)
636{ 843{
637#ifndef WIN32 844 fd_intern (sigpipe [0]);
638 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 845 fd_intern (sigpipe [1]);
639 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
640
641 /* rather than sort out wether we really need nb, set it */
642 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
643 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
644#endif
645 846
646 ev_io_set (&sigev, sigpipe [0], EV_READ); 847 ev_io_set (&sigev, sigpipe [0], EV_READ);
647 ev_io_start (EV_A_ &sigev); 848 ev_io_start (EV_A_ &sigev);
648 ev_unref (EV_A); /* child watcher should not keep loop alive */ 849 ev_unref (EV_A); /* child watcher should not keep loop alive */
649} 850}
650 851
651/*****************************************************************************/ 852/*****************************************************************************/
652 853
653static struct ev_child *childs [PID_HASHSIZE]; 854static WL childs [EV_PID_HASHSIZE];
654 855
655#ifndef WIN32 856#ifndef _WIN32
656 857
657static 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}
658 874
659#ifndef WCONTINUED 875#ifndef WCONTINUED
660# define WCONTINUED 0 876# define WCONTINUED 0
661#endif 877#endif
662 878
663static void 879static void
664child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
665{
666 struct ev_child *w;
667
668 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
669 if (w->pid == pid || !w->pid)
670 {
671 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
672 w->rpid = pid;
673 w->rstatus = status;
674 ev_feed_event (EV_A_ (W)w, EV_CHILD);
675 }
676}
677
678static void
679childcb (EV_P_ struct ev_signal *sw, int revents) 880childcb (EV_P_ ev_signal *sw, int revents)
680{ 881{
681 int pid, status; 882 int pid, status;
682 883
884 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
683 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 885 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
684 { 886 if (!WCONTINUED
887 || errno != EINVAL
888 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
889 return;
890
685 /* 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 */
686 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 893 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687 894
688 child_reap (EV_A_ sw, pid, pid, status); 895 child_reap (EV_A_ sw, pid, pid, status);
896 if (EV_PID_HASHSIZE > 1)
689 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 */
690 }
691} 898}
692 899
693#endif 900#endif
694 901
695/*****************************************************************************/ 902/*****************************************************************************/
696 903
904#if EV_USE_PORT
905# include "ev_port.c"
906#endif
697#if EV_USE_KQUEUE 907#if EV_USE_KQUEUE
698# include "ev_kqueue.c" 908# include "ev_kqueue.c"
699#endif 909#endif
700#if EV_USE_EPOLL 910#if EV_USE_EPOLL
701# include "ev_epoll.c" 911# include "ev_epoll.c"
… …
718{ 928{
719 return EV_VERSION_MINOR; 929 return EV_VERSION_MINOR;
720} 930}
721 931
722/* 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 */
723static int 933int inline_size
724enable_secure (void) 934enable_secure (void)
725{ 935{
726#ifdef WIN32 936#ifdef _WIN32
727 return 0; 937 return 0;
728#else 938#else
729 return getuid () != geteuid () 939 return getuid () != geteuid ()
730 || getgid () != getegid (); 940 || getgid () != getegid ();
731#endif 941#endif
732} 942}
733 943
734int 944unsigned int
735ev_method (EV_P) 945ev_supported_backends (void)
736{ 946{
737 return method; 947 unsigned int flags = 0;
738}
739 948
740static void 949 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
741loop_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)
742{ 960{
743 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)
744 { 1016 {
745#if EV_USE_MONOTONIC 1017#if EV_USE_MONOTONIC
746 { 1018 {
747 struct timespec ts; 1019 struct timespec ts;
748 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1020 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
753 ev_rt_now = ev_time (); 1025 ev_rt_now = ev_time ();
754 mn_now = get_clock (); 1026 mn_now = get_clock ();
755 now_floor = mn_now; 1027 now_floor = mn_now;
756 rtmn_diff = ev_rt_now - mn_now; 1028 rtmn_diff = ev_rt_now - mn_now;
757 1029
758 if (methods == EVMETHOD_AUTO) 1030 io_blocktime = 0.;
759 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"))
760 methods = atoi (getenv ("LIBEV_METHODS")); 1042 flags = atoi (getenv ("LIBEV_FLAGS"));
761 else
762 methods = EVMETHOD_ANY;
763 1043
764 method = 0; 1044 if (!(flags & 0x0000ffffUL))
1045 flags |= ev_recommended_backends ();
1046
1047 backend = 0;
1048 backend_fd = -1;
765#if EV_USE_WIN32 1049#if EV_USE_INOTIFY
766 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);
767#endif 1055#endif
768#if EV_USE_KQUEUE 1056#if EV_USE_KQUEUE
769 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1057 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770#endif 1058#endif
771#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
772 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1060 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773#endif 1061#endif
774#if EV_USE_POLL 1062#if EV_USE_POLL
775 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1063 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776#endif 1064#endif
777#if EV_USE_SELECT 1065#if EV_USE_SELECT
778 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1066 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779#endif 1067#endif
780 1068
781 ev_init (&sigev, sigcb); 1069 ev_init (&sigev, sigcb);
782 ev_set_priority (&sigev, EV_MAXPRI); 1070 ev_set_priority (&sigev, EV_MAXPRI);
783 } 1071 }
784} 1072}
785 1073
786void 1074static void noinline
787loop_destroy (EV_P) 1075loop_destroy (EV_P)
788{ 1076{
789 int i; 1077 int i;
790 1078
791#if EV_USE_WIN32 1079#if EV_USE_INOTIFY
792 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);
793#endif 1089#endif
794#if EV_USE_KQUEUE 1090#if EV_USE_KQUEUE
795 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1091 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796#endif 1092#endif
797#if EV_USE_EPOLL 1093#if EV_USE_EPOLL
798 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1094 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799#endif 1095#endif
800#if EV_USE_POLL 1096#if EV_USE_POLL
801 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1097 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802#endif 1098#endif
803#if EV_USE_SELECT 1099#if EV_USE_SELECT
804 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1100 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805#endif 1101#endif
806 1102
807 for (i = NUMPRI; i--; ) 1103 for (i = NUMPRI; i--; )
1104 {
808 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;
809 1112
810 /* have to use the microsoft-never-gets-it-right macro */ 1113 /* have to use the microsoft-never-gets-it-right macro */
811 array_free_microshit (fdchange); 1114 array_free (fdchange, EMPTY);
812 array_free_microshit (timer); 1115 array_free (timer, EMPTY);
813#if EV_PERIODICS 1116#if EV_PERIODIC_ENABLE
814 array_free_microshit (periodic); 1117 array_free (periodic, EMPTY);
815#endif 1118#endif
816 array_free_microshit (idle); 1119#if EV_FORK_ENABLE
817 array_free_microshit (prepare); 1120 array_free (fork, EMPTY);
818 array_free_microshit (check); 1121#endif
1122 array_free (prepare, EMPTY);
1123 array_free (check, EMPTY);
819 1124
820 method = 0; 1125 backend = 0;
821} 1126}
822 1127
823static void 1128void inline_size infy_fork (EV_P);
1129
1130void inline_size
824loop_fork (EV_P) 1131loop_fork (EV_P)
825{ 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
826#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1140 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
828#endif 1141#endif
829#if EV_USE_KQUEUE 1142#if EV_USE_INOTIFY
830 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1143 infy_fork (EV_A);
831#endif 1144#endif
832 1145
833 if (ev_is_active (&sigev)) 1146 if (ev_is_active (&sigev))
834 { 1147 {
835 /* default loop */ 1148 /* default loop */
… …
848 postfork = 0; 1161 postfork = 0;
849} 1162}
850 1163
851#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
852struct ev_loop * 1165struct ev_loop *
853ev_loop_new (int methods) 1166ev_loop_new (unsigned int flags)
854{ 1167{
855 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));
856 1169
857 memset (loop, 0, sizeof (struct ev_loop)); 1170 memset (loop, 0, sizeof (struct ev_loop));
858 1171
859 loop_init (EV_A_ methods); 1172 loop_init (EV_A_ flags);
860 1173
861 if (ev_method (EV_A)) 1174 if (ev_backend (EV_A))
862 return loop; 1175 return loop;
863 1176
864 return 0; 1177 return 0;
865} 1178}
866 1179
… …
879 1192
880#endif 1193#endif
881 1194
882#if EV_MULTIPLICITY 1195#if EV_MULTIPLICITY
883struct ev_loop * 1196struct ev_loop *
1197ev_default_loop_init (unsigned int flags)
884#else 1198#else
885int 1199int
1200ev_default_loop (unsigned int flags)
886#endif 1201#endif
887ev_default_loop (int methods)
888{ 1202{
889 if (sigpipe [0] == sigpipe [1]) 1203 if (sigpipe [0] == sigpipe [1])
890 if (pipe (sigpipe)) 1204 if (pipe (sigpipe))
891 return 0; 1205 return 0;
892 1206
893 if (!default_loop) 1207 if (!ev_default_loop_ptr)
894 { 1208 {
895#if EV_MULTIPLICITY 1209#if EV_MULTIPLICITY
896 struct ev_loop *loop = default_loop = &default_loop_struct; 1210 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897#else 1211#else
898 default_loop = 1; 1212 ev_default_loop_ptr = 1;
899#endif 1213#endif
900 1214
901 loop_init (EV_A_ methods); 1215 loop_init (EV_A_ flags);
902 1216
903 if (ev_method (EV_A)) 1217 if (ev_backend (EV_A))
904 { 1218 {
905 siginit (EV_A); 1219 siginit (EV_A);
906 1220
907#ifndef WIN32 1221#ifndef _WIN32
908 ev_signal_init (&childev, childcb, SIGCHLD); 1222 ev_signal_init (&childev, childcb, SIGCHLD);
909 ev_set_priority (&childev, EV_MAXPRI); 1223 ev_set_priority (&childev, EV_MAXPRI);
910 ev_signal_start (EV_A_ &childev); 1224 ev_signal_start (EV_A_ &childev);
911 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1225 ev_unref (EV_A); /* child watcher should not keep loop alive */
912#endif 1226#endif
913 } 1227 }
914 else 1228 else
915 default_loop = 0; 1229 ev_default_loop_ptr = 0;
916 } 1230 }
917 1231
918 return default_loop; 1232 return ev_default_loop_ptr;
919} 1233}
920 1234
921void 1235void
922ev_default_destroy (void) 1236ev_default_destroy (void)
923{ 1237{
924#if EV_MULTIPLICITY 1238#if EV_MULTIPLICITY
925 struct ev_loop *loop = default_loop; 1239 struct ev_loop *loop = ev_default_loop_ptr;
926#endif 1240#endif
927 1241
928#ifndef WIN32 1242#ifndef _WIN32
929 ev_ref (EV_A); /* child watcher */ 1243 ev_ref (EV_A); /* child watcher */
930 ev_signal_stop (EV_A_ &childev); 1244 ev_signal_stop (EV_A_ &childev);
931#endif 1245#endif
932 1246
933 ev_ref (EV_A); /* signal watcher */ 1247 ev_ref (EV_A); /* signal watcher */
… …
941 1255
942void 1256void
943ev_default_fork (void) 1257ev_default_fork (void)
944{ 1258{
945#if EV_MULTIPLICITY 1259#if EV_MULTIPLICITY
946 struct ev_loop *loop = default_loop; 1260 struct ev_loop *loop = ev_default_loop_ptr;
947#endif 1261#endif
948 1262
949 if (method) 1263 if (backend)
950 postfork = 1; 1264 postfork = 1;
951} 1265}
952 1266
953/*****************************************************************************/ 1267/*****************************************************************************/
954 1268
955static int 1269void
956any_pending (EV_P) 1270ev_invoke (EV_P_ void *w, int revents)
957{ 1271{
958 int pri; 1272 EV_CB_INVOKE ((W)w, revents);
959
960 for (pri = NUMPRI; pri--; )
961 if (pendingcnt [pri])
962 return 1;
963
964 return 0;
965} 1273}
966 1274
967static void 1275void inline_speed
968call_pending (EV_P) 1276call_pending (EV_P)
969{ 1277{
970 int pri; 1278 int pri;
971 1279
972 for (pri = NUMPRI; pri--; ) 1280 for (pri = NUMPRI; pri--; )
973 while (pendingcnt [pri]) 1281 while (pendingcnt [pri])
974 { 1282 {
975 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1283 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976 1284
977 if (p->w) 1285 if (expect_true (p->w))
978 { 1286 {
1287 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1288
979 p->w->pending = 0; 1289 p->w->pending = 0;
980 EV_CB_INVOKE (p->w, p->events); 1290 EV_CB_INVOKE (p->w, p->events);
981 } 1291 }
982 } 1292 }
983} 1293}
984 1294
985static void 1295void inline_size
986timers_reify (EV_P) 1296timers_reify (EV_P)
987{ 1297{
988 while (timercnt && ((WT)timers [0])->at <= mn_now) 1298 while (timercnt && ((WT)timers [0])->at <= mn_now)
989 { 1299 {
990 struct ev_timer *w = timers [0]; 1300 ev_timer *w = (ev_timer *)timers [0];
991 1301
992 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1302 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
993 1303
994 /* first reschedule or stop timer */ 1304 /* first reschedule or stop timer */
995 if (w->repeat) 1305 if (w->repeat)
996 { 1306 {
997 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.));
998 1308
999 ((WT)w)->at += w->repeat; 1309 ((WT)w)->at += w->repeat;
1000 if (((WT)w)->at < mn_now) 1310 if (((WT)w)->at < mn_now)
1001 ((WT)w)->at = mn_now; 1311 ((WT)w)->at = mn_now;
1002 1312
1003 downheap ((WT *)timers, timercnt, 0); 1313 downheap (timers, timercnt, 0);
1004 } 1314 }
1005 else 1315 else
1006 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1007 1317
1008 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1318 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009 } 1319 }
1010} 1320}
1011 1321
1012#if EV_PERIODICS 1322#if EV_PERIODIC_ENABLE
1013static void 1323void inline_size
1014periodics_reify (EV_P) 1324periodics_reify (EV_P)
1015{ 1325{
1016 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1326 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1017 { 1327 {
1018 struct ev_periodic *w = periodics [0]; 1328 ev_periodic *w = (ev_periodic *)periodics [0];
1019 1329
1020 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1330 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1021 1331
1022 /* first reschedule or stop timer */ 1332 /* first reschedule or stop timer */
1023 if (w->reschedule_cb) 1333 if (w->reschedule_cb)
1024 { 1334 {
1025 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);
1026
1027 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));
1028 downheap ((WT *)periodics, periodiccnt, 0); 1337 downheap (periodics, periodiccnt, 0);
1029 } 1338 }
1030 else if (w->interval) 1339 else if (w->interval)
1031 { 1340 {
1032 ((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;
1033 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));
1034 downheap ((WT *)periodics, periodiccnt, 0); 1344 downheap (periodics, periodiccnt, 0);
1035 } 1345 }
1036 else 1346 else
1037 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1347 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1038 1348
1039 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1349 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1040 } 1350 }
1041} 1351}
1042 1352
1043static void 1353static void noinline
1044periodics_reschedule (EV_P) 1354periodics_reschedule (EV_P)
1045{ 1355{
1046 int i; 1356 int i;
1047 1357
1048 /* adjust periodics after time jump */ 1358 /* adjust periodics after time jump */
1049 for (i = 0; i < periodiccnt; ++i) 1359 for (i = 0; i < periodiccnt; ++i)
1050 { 1360 {
1051 struct ev_periodic *w = periodics [i]; 1361 ev_periodic *w = (ev_periodic *)periodics [i];
1052 1362
1053 if (w->reschedule_cb) 1363 if (w->reschedule_cb)
1054 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1055 else if (w->interval) 1365 else if (w->interval)
1056 ((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;
1057 } 1367 }
1058 1368
1059 /* now rebuild the heap */ 1369 /* now rebuild the heap */
1060 for (i = periodiccnt >> 1; i--; ) 1370 for (i = periodiccnt >> 1; i--; )
1061 downheap ((WT *)periodics, periodiccnt, i); 1371 downheap (periodics, periodiccnt, i);
1062} 1372}
1063#endif 1373#endif
1064 1374
1065inline int 1375#if EV_IDLE_ENABLE
1066time_update_monotonic (EV_P) 1376void inline_size
1377idle_reify (EV_P)
1067{ 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
1068 mn_now = get_clock (); 1408 mn_now = get_clock ();
1069 1409
1410 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1411 /* interpolate in the meantime */
1070 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1412 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1071 { 1413 {
1072 ev_rt_now = rtmn_diff + mn_now; 1414 ev_rt_now = rtmn_diff + mn_now;
1073 return 0; 1415 return;
1074 } 1416 }
1075 else 1417
1076 {
1077 now_floor = mn_now; 1418 now_floor = mn_now;
1078 ev_rt_now = ev_time (); 1419 ev_rt_now = ev_time ();
1079 return 1;
1080 }
1081}
1082 1420
1083static void 1421 /* loop a few times, before making important decisions.
1084time_update (EV_P) 1422 * on the choice of "4": one iteration isn't enough,
1085{ 1423 * in case we get preempted during the calls to
1086 int i; 1424 * ev_time and get_clock. a second call is almost guaranteed
1087 1425 * to succeed in that case, though. and looping a few more times
1088#if EV_USE_MONOTONIC 1426 * doesn't hurt either as we only do this on time-jumps or
1089 if (expect_true (have_monotonic)) 1427 * in the unlikely event of having been preempted here.
1090 { 1428 */
1091 if (time_update_monotonic (EV_A)) 1429 for (i = 4; --i; )
1092 { 1430 {
1093 ev_tstamp odiff = rtmn_diff;
1094
1095 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1096 {
1097 rtmn_diff = ev_rt_now - mn_now; 1431 rtmn_diff = ev_rt_now - mn_now;
1098 1432
1099 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1433 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1100 return; /* all is well */ 1434 return; /* all is well */
1101 1435
1102 ev_rt_now = ev_time (); 1436 ev_rt_now = ev_time ();
1103 mn_now = get_clock (); 1437 mn_now = get_clock ();
1104 now_floor = mn_now; 1438 now_floor = mn_now;
1105 } 1439 }
1106 1440
1107# 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
1108 periodics_reschedule (EV_A); 1455 periodics_reschedule (EV_A);
1109# endif 1456#endif
1110 /* no timer adjustment, as the monotonic clock doesn't jump */
1111 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1112 }
1113 }
1114 else
1115#endif
1116 {
1117 ev_rt_now = ev_time ();
1118
1119 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1120 {
1121#if EV_PERIODICS
1122 periodics_reschedule (EV_A);
1123#endif
1124
1125 /* 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 */
1126 for (i = 0; i < timercnt; ++i) 1458 for (i = 0; i < timercnt; ++i)
1127 ((WT)timers [i])->at += ev_rt_now - mn_now; 1459 ((WT)timers [i])->at += ev_rt_now - mn_now;
1128 } 1460 }
1129 1461
1130 mn_now = ev_rt_now; 1462 mn_now = ev_rt_now;
… …
1146static int loop_done; 1478static int loop_done;
1147 1479
1148void 1480void
1149ev_loop (EV_P_ int flags) 1481ev_loop (EV_P_ int flags)
1150{ 1482{
1151 double block;
1152 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 */
1153 1488
1154 do 1489 do
1155 { 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
1156 /* queue check watchers (and execute them) */ 1510 /* queue prepare watchers (and execute them) */
1157 if (expect_false (preparecnt)) 1511 if (expect_false (preparecnt))
1158 { 1512 {
1159 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1513 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1160 call_pending (EV_A); 1514 call_pending (EV_A);
1161 } 1515 }
1162 1516
1517 if (expect_false (!activecnt))
1518 break;
1519
1163 /* we might have forked, so reify kernel state if necessary */ 1520 /* we might have forked, so reify kernel state if necessary */
1164 if (expect_false (postfork)) 1521 if (expect_false (postfork))
1165 loop_fork (EV_A); 1522 loop_fork (EV_A);
1166 1523
1167 /* update fd-related kernel structures */ 1524 /* update fd-related kernel structures */
1168 fd_reify (EV_A); 1525 fd_reify (EV_A);
1169 1526
1170 /* calculate blocking time */ 1527 /* calculate blocking time */
1528 {
1529 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.;
1171 1531
1172 /* we only need this for !monotonic clock or timers, but as we basically 1532 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1173 always have timers, we just calculate it always */
1174#if EV_USE_MONOTONIC
1175 if (expect_true (have_monotonic))
1176 time_update_monotonic (EV_A);
1177 else
1178#endif
1179 { 1533 {
1180 ev_rt_now = ev_time (); 1534 /* update time to cancel out callback processing overhead */
1181 mn_now = ev_rt_now; 1535 time_update (EV_A_ 1e100);
1182 }
1183 1536
1184 if (flags & EVLOOP_NONBLOCK || idlecnt)
1185 block = 0.;
1186 else
1187 {
1188 block = MAX_BLOCKTIME; 1537 waittime = MAX_BLOCKTIME;
1189 1538
1190 if (timercnt) 1539 if (timercnt)
1191 { 1540 {
1192 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1193 if (block > to) block = to; 1542 if (waittime > to) waittime = to;
1194 } 1543 }
1195 1544
1196#if EV_PERIODICS 1545#if EV_PERIODIC_ENABLE
1197 if (periodiccnt) 1546 if (periodiccnt)
1198 { 1547 {
1199 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;
1200 if (block > to) block = to; 1549 if (waittime > to) waittime = to;
1201 } 1550 }
1202#endif 1551#endif
1203 1552
1204 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 }
1205 } 1566 }
1206 1567
1207 method_poll (EV_A_ block); 1568 ++loop_count;
1569 backend_poll (EV_A_ waittime);
1208 1570
1209 /* update ev_rt_now, do magic */ 1571 /* update ev_rt_now, do magic */
1210 time_update (EV_A); 1572 time_update (EV_A_ waittime + sleeptime);
1573 }
1211 1574
1212 /* queue pending timers and reschedule them */ 1575 /* queue pending timers and reschedule them */
1213 timers_reify (EV_A); /* relative timers called last */ 1576 timers_reify (EV_A); /* relative timers called last */
1214#if EV_PERIODICS 1577#if EV_PERIODIC_ENABLE
1215 periodics_reify (EV_A); /* absolute timers called first */ 1578 periodics_reify (EV_A); /* absolute timers called first */
1216#endif 1579#endif
1217 1580
1581#if EV_IDLE_ENABLE
1218 /* queue idle watchers unless io or timers are pending */ 1582 /* queue idle watchers unless other events are pending */
1219 if (idlecnt && !any_pending (EV_A)) 1583 idle_reify (EV_A);
1220 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1584#endif
1221 1585
1222 /* queue check watchers, to be executed first */ 1586 /* queue check watchers, to be executed first */
1223 if (checkcnt) 1587 if (expect_false (checkcnt))
1224 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1588 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225 1589
1226 call_pending (EV_A); 1590 call_pending (EV_A);
1591
1227 } 1592 }
1228 while (activecnt && !loop_done); 1593 while (expect_true (activecnt && !loop_done));
1229 1594
1230 if (loop_done != 2) 1595 if (loop_done == EVUNLOOP_ONE)
1231 loop_done = 0; 1596 loop_done = EVUNLOOP_CANCEL;
1232} 1597}
1233 1598
1234void 1599void
1235ev_unloop (EV_P_ int how) 1600ev_unloop (EV_P_ int how)
1236{ 1601{
1237 loop_done = how; 1602 loop_done = how;
1238} 1603}
1239 1604
1240/*****************************************************************************/ 1605/*****************************************************************************/
1241 1606
1242inline void 1607void inline_size
1243wlist_add (WL *head, WL elem) 1608wlist_add (WL *head, WL elem)
1244{ 1609{
1245 elem->next = *head; 1610 elem->next = *head;
1246 *head = elem; 1611 *head = elem;
1247} 1612}
1248 1613
1249inline void 1614void inline_size
1250wlist_del (WL *head, WL elem) 1615wlist_del (WL *head, WL elem)
1251{ 1616{
1252 while (*head) 1617 while (*head)
1253 { 1618 {
1254 if (*head == elem) 1619 if (*head == elem)
… …
1259 1624
1260 head = &(*head)->next; 1625 head = &(*head)->next;
1261 } 1626 }
1262} 1627}
1263 1628
1264inline void 1629void inline_speed
1265ev_clear_pending (EV_P_ W w) 1630clear_pending (EV_P_ W w)
1266{ 1631{
1267 if (w->pending) 1632 if (w->pending)
1268 { 1633 {
1269 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1634 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1270 w->pending = 0; 1635 w->pending = 0;
1271 } 1636 }
1272} 1637}
1273 1638
1274inline 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
1275ev_start (EV_P_ W w, int active) 1666ev_start (EV_P_ W w, int active)
1276{ 1667{
1277 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1668 pri_adjust (EV_A_ w);
1278 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1279
1280 w->active = active; 1669 w->active = active;
1281 ev_ref (EV_A); 1670 ev_ref (EV_A);
1282} 1671}
1283 1672
1284inline void 1673void inline_size
1285ev_stop (EV_P_ W w) 1674ev_stop (EV_P_ W w)
1286{ 1675{
1287 ev_unref (EV_A); 1676 ev_unref (EV_A);
1288 w->active = 0; 1677 w->active = 0;
1289} 1678}
1290 1679
1291/*****************************************************************************/ 1680/*****************************************************************************/
1292 1681
1293void 1682void noinline
1294ev_io_start (EV_P_ struct ev_io *w) 1683ev_io_start (EV_P_ ev_io *w)
1295{ 1684{
1296 int fd = w->fd; 1685 int fd = w->fd;
1297 1686
1298 if (ev_is_active (w)) 1687 if (expect_false (ev_is_active (w)))
1299 return; 1688 return;
1300 1689
1301 assert (("ev_io_start called with negative fd", fd >= 0)); 1690 assert (("ev_io_start called with negative fd", fd >= 0));
1302 1691
1303 ev_start (EV_A_ (W)w, 1); 1692 ev_start (EV_A_ (W)w, 1);
1304 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1693 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1305 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1694 wlist_add (&anfds[fd].head, (WL)w);
1306 1695
1307 fd_change (EV_A_ fd); 1696 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1697 w->events &= ~EV_IOFDSET;
1308} 1698}
1309 1699
1310void 1700void noinline
1311ev_io_stop (EV_P_ struct ev_io *w) 1701ev_io_stop (EV_P_ ev_io *w)
1312{ 1702{
1313 ev_clear_pending (EV_A_ (W)w); 1703 clear_pending (EV_A_ (W)w);
1314 if (!ev_is_active (w)) 1704 if (expect_false (!ev_is_active (w)))
1315 return; 1705 return;
1316 1706
1317 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));
1318 1708
1319 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1709 wlist_del (&anfds[w->fd].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1710 ev_stop (EV_A_ (W)w);
1321 1711
1322 fd_change (EV_A_ w->fd); 1712 fd_change (EV_A_ w->fd, 1);
1323} 1713}
1324 1714
1325void 1715void noinline
1326ev_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)
1327{ 1759{
1328 if (ev_is_active (w)) 1760 if (ev_is_active (w))
1329 return;
1330
1331 ((WT)w)->at += mn_now;
1332
1333 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1334
1335 ev_start (EV_A_ (W)w, ++timercnt);
1336 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1337 timers [timercnt - 1] = w;
1338 upheap ((WT *)timers, timercnt - 1);
1339
1340 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341}
1342
1343void
1344ev_timer_stop (EV_P_ struct ev_timer *w)
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w))
1348 return;
1349
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351
1352 if (((W)w)->active < timercnt--)
1353 {
1354 timers [((W)w)->active - 1] = timers [timercnt];
1355 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1356 }
1357
1358 ((WT)w)->at -= mn_now;
1359
1360 ev_stop (EV_A_ (W)w);
1361}
1362
1363void
1364ev_timer_again (EV_P_ struct ev_timer *w)
1365{
1366 if (ev_is_active (w))
1367 { 1761 {
1368 if (w->repeat) 1762 if (w->repeat)
1763 {
1764 ((WT)w)->at = mn_now + w->repeat;
1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1765 adjustheap (timers, timercnt, ((W)w)->active - 1);
1766 }
1370 else 1767 else
1371 ev_timer_stop (EV_A_ w); 1768 ev_timer_stop (EV_A_ w);
1372 } 1769 }
1373 else if (w->repeat) 1770 else if (w->repeat)
1771 {
1772 w->at = w->repeat;
1374 ev_timer_start (EV_A_ w); 1773 ev_timer_start (EV_A_ w);
1774 }
1375} 1775}
1376 1776
1377#if EV_PERIODICS 1777#if EV_PERIODIC_ENABLE
1378void 1778void noinline
1379ev_periodic_start (EV_P_ struct ev_periodic *w) 1779ev_periodic_start (EV_P_ ev_periodic *w)
1380{ 1780{
1381 if (ev_is_active (w)) 1781 if (expect_false (ev_is_active (w)))
1382 return; 1782 return;
1383 1783
1384 if (w->reschedule_cb) 1784 if (w->reschedule_cb)
1385 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1785 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386 else if (w->interval) 1786 else if (w->interval)
1387 { 1787 {
1388 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.));
1389 /* 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 */
1390 ((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;
1391 } 1791 }
1792 else
1793 ((WT)w)->at = w->offset;
1392 1794
1393 ev_start (EV_A_ (W)w, ++periodiccnt); 1795 ev_start (EV_A_ (W)w, ++periodiccnt);
1394 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1796 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1395 periodics [periodiccnt - 1] = w; 1797 periodics [periodiccnt - 1] = (WT)w;
1396 upheap ((WT *)periodics, periodiccnt - 1); 1798 upheap (periodics, periodiccnt - 1);
1397 1799
1398 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1800 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1399} 1801}
1400 1802
1401void 1803void noinline
1402ev_periodic_stop (EV_P_ struct ev_periodic *w) 1804ev_periodic_stop (EV_P_ ev_periodic *w)
1403{ 1805{
1404 ev_clear_pending (EV_A_ (W)w); 1806 clear_pending (EV_A_ (W)w);
1405 if (!ev_is_active (w)) 1807 if (expect_false (!ev_is_active (w)))
1406 return; 1808 return;
1407 1809
1408 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1810 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1409 1811
1410 if (((W)w)->active < periodiccnt--) 1812 {
1813 int active = ((W)w)->active;
1814
1815 if (expect_true (--active < --periodiccnt))
1411 { 1816 {
1412 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1817 periodics [active] = periodics [periodiccnt];
1413 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1818 adjustheap (periodics, periodiccnt, active);
1414 } 1819 }
1820 }
1415 1821
1416 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1417} 1823}
1418 1824
1419void 1825void noinline
1420ev_periodic_again (EV_P_ struct ev_periodic *w) 1826ev_periodic_again (EV_P_ ev_periodic *w)
1421{ 1827{
1422 /* TODO: use adjustheap and recalculation */ 1828 /* TODO: use adjustheap and recalculation */
1423 ev_periodic_stop (EV_A_ w); 1829 ev_periodic_stop (EV_A_ w);
1424 ev_periodic_start (EV_A_ w); 1830 ev_periodic_start (EV_A_ w);
1425} 1831}
1426#endif 1832#endif
1427 1833
1428void
1429ev_idle_start (EV_P_ struct ev_idle *w)
1430{
1431 if (ev_is_active (w))
1432 return;
1433
1434 ev_start (EV_A_ (W)w, ++idlecnt);
1435 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1436 idles [idlecnt - 1] = w;
1437}
1438
1439void
1440ev_idle_stop (EV_P_ struct ev_idle *w)
1441{
1442 ev_clear_pending (EV_A_ (W)w);
1443 if (ev_is_active (w))
1444 return;
1445
1446 idles [((W)w)->active - 1] = idles [--idlecnt];
1447 ev_stop (EV_A_ (W)w);
1448}
1449
1450void
1451ev_prepare_start (EV_P_ struct ev_prepare *w)
1452{
1453 if (ev_is_active (w))
1454 return;
1455
1456 ev_start (EV_A_ (W)w, ++preparecnt);
1457 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1458 prepares [preparecnt - 1] = w;
1459}
1460
1461void
1462ev_prepare_stop (EV_P_ struct ev_prepare *w)
1463{
1464 ev_clear_pending (EV_A_ (W)w);
1465 if (ev_is_active (w))
1466 return;
1467
1468 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1469 ev_stop (EV_A_ (W)w);
1470}
1471
1472void
1473ev_check_start (EV_P_ struct ev_check *w)
1474{
1475 if (ev_is_active (w))
1476 return;
1477
1478 ev_start (EV_A_ (W)w, ++checkcnt);
1479 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1480 checks [checkcnt - 1] = w;
1481}
1482
1483void
1484ev_check_stop (EV_P_ struct ev_check *w)
1485{
1486 ev_clear_pending (EV_A_ (W)w);
1487 if (!ev_is_active (w))
1488 return;
1489
1490 checks [((W)w)->active - 1] = checks [--checkcnt];
1491 ev_stop (EV_A_ (W)w);
1492}
1493
1494#ifndef SA_RESTART 1834#ifndef SA_RESTART
1495# define SA_RESTART 0 1835# define SA_RESTART 0
1496#endif 1836#endif
1497 1837
1498void 1838void noinline
1499ev_signal_start (EV_P_ struct ev_signal *w) 1839ev_signal_start (EV_P_ ev_signal *w)
1500{ 1840{
1501#if EV_MULTIPLICITY 1841#if EV_MULTIPLICITY
1502 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));
1503#endif 1843#endif
1504 if (ev_is_active (w)) 1844 if (expect_false (ev_is_active (w)))
1505 return; 1845 return;
1506 1846
1507 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));
1508 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
1509 ev_start (EV_A_ (W)w, 1); 1863 ev_start (EV_A_ (W)w, 1);
1510 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1864 wlist_add (&signals [w->signum - 1].head, (WL)w);
1512 1865
1513 if (!((WL)w)->next) 1866 if (!((WL)w)->next)
1514 { 1867 {
1515#if WIN32 1868#if _WIN32
1516 signal (w->signum, sighandler); 1869 signal (w->signum, sighandler);
1517#else 1870#else
1518 struct sigaction sa; 1871 struct sigaction sa;
1519 sa.sa_handler = sighandler; 1872 sa.sa_handler = sighandler;
1520 sigfillset (&sa.sa_mask); 1873 sigfillset (&sa.sa_mask);
… …
1522 sigaction (w->signum, &sa, 0); 1875 sigaction (w->signum, &sa, 0);
1523#endif 1876#endif
1524 } 1877 }
1525} 1878}
1526 1879
1527void 1880void noinline
1528ev_signal_stop (EV_P_ struct ev_signal *w) 1881ev_signal_stop (EV_P_ ev_signal *w)
1529{ 1882{
1530 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1531 if (!ev_is_active (w)) 1884 if (expect_false (!ev_is_active (w)))
1532 return; 1885 return;
1533 1886
1534 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1887 wlist_del (&signals [w->signum - 1].head, (WL)w);
1535 ev_stop (EV_A_ (W)w); 1888 ev_stop (EV_A_ (W)w);
1536 1889
1537 if (!signals [w->signum - 1].head) 1890 if (!signals [w->signum - 1].head)
1538 signal (w->signum, SIG_DFL); 1891 signal (w->signum, SIG_DFL);
1539} 1892}
1540 1893
1541void 1894void
1542ev_child_start (EV_P_ struct ev_child *w) 1895ev_child_start (EV_P_ ev_child *w)
1543{ 1896{
1544#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1545 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));
1546#endif 1899#endif
1547 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1548 return; 1901 return;
1549 1902
1550 ev_start (EV_A_ (W)w, 1); 1903 ev_start (EV_A_ (W)w, 1);
1551 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1904 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1552} 1905}
1553 1906
1554void 1907void
1555ev_child_stop (EV_P_ struct ev_child *w) 1908ev_child_stop (EV_P_ ev_child *w)
1556{ 1909{
1557 ev_clear_pending (EV_A_ (W)w); 1910 clear_pending (EV_A_ (W)w);
1558 if (!ev_is_active (w)) 1911 if (expect_false (!ev_is_active (w)))
1559 return; 1912 return;
1560 1913
1561 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1914 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1562 ev_stop (EV_A_ (W)w); 1915 ev_stop (EV_A_ (W)w);
1563} 1916}
1564 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
1565/*****************************************************************************/ 2371/*****************************************************************************/
1566 2372
1567struct ev_once 2373struct ev_once
1568{ 2374{
1569 struct ev_io io; 2375 ev_io io;
1570 struct ev_timer to; 2376 ev_timer to;
1571 void (*cb)(int revents, void *arg); 2377 void (*cb)(int revents, void *arg);
1572 void *arg; 2378 void *arg;
1573}; 2379};
1574 2380
1575static void 2381static void
… …
1584 2390
1585 cb (revents, arg); 2391 cb (revents, arg);
1586} 2392}
1587 2393
1588static void 2394static void
1589once_cb_io (EV_P_ struct ev_io *w, int revents) 2395once_cb_io (EV_P_ ev_io *w, int revents)
1590{ 2396{
1591 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);
1592} 2398}
1593 2399
1594static void 2400static void
1595once_cb_to (EV_P_ struct ev_timer *w, int revents) 2401once_cb_to (EV_P_ ev_timer *w, int revents)
1596{ 2402{
1597 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);
1598} 2404}
1599 2405
1600void 2406void
1601ev_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)
1602{ 2408{
1603 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));
1604 2410
1605 if (!once) 2411 if (expect_false (!once))
2412 {
1606 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2413 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1607 else 2414 return;
1608 { 2415 }
2416
1609 once->cb = cb; 2417 once->cb = cb;
1610 once->arg = arg; 2418 once->arg = arg;
1611 2419
1612 ev_init (&once->io, once_cb_io); 2420 ev_init (&once->io, once_cb_io);
1613 if (fd >= 0) 2421 if (fd >= 0)
1614 { 2422 {
1615 ev_io_set (&once->io, fd, events); 2423 ev_io_set (&once->io, fd, events);
1616 ev_io_start (EV_A_ &once->io); 2424 ev_io_start (EV_A_ &once->io);
1617 } 2425 }
1618 2426
1619 ev_init (&once->to, once_cb_to); 2427 ev_init (&once->to, once_cb_to);
1620 if (timeout >= 0.) 2428 if (timeout >= 0.)
1621 { 2429 {
1622 ev_timer_set (&once->to, timeout, 0.); 2430 ev_timer_set (&once->to, timeout, 0.);
1623 ev_timer_start (EV_A_ &once->to); 2431 ev_timer_start (EV_A_ &once->to);
1624 }
1625 } 2432 }
1626} 2433}
2434
2435#if EV_MULTIPLICITY
2436 #include "ev_wrap.h"
2437#endif
1627 2438
1628#ifdef __cplusplus 2439#ifdef __cplusplus
1629} 2440}
1630#endif 2441#endif
1631 2442

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