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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.193 by root, Sat Dec 22 05:47:58 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
41# endif 65# endif
42 66
43# if HAVE_POLL && HAVE_POLL_H 67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
45# endif 73# endif
46 74
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
49# endif 81# endif
50 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
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# 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
53# endif 113# endif
54 114
55#endif 115#endif
56 116
57#include <math.h> 117#include <math.h>
… …
66#include <sys/types.h> 126#include <sys/types.h>
67#include <time.h> 127#include <time.h>
68 128
69#include <signal.h> 129#include <signal.h>
70 130
131#ifdef EV_H
132# include EV_H
133#else
134# include "ev.h"
135#endif
136
71#ifndef WIN32 137#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 138# include <sys/time.h>
74# include <sys/wait.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
75#endif 146# endif
147#endif
148
76/**/ 149/**/
77 150
78#ifndef EV_USE_MONOTONIC 151#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1 152# 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
80#endif 161#endif
81 162
82#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
84#endif 165#endif
85 166
86#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 168# ifdef _WIN32
169# define EV_USE_POLL 0
170# else
171# define EV_USE_POLL 1
172# endif
88#endif 173#endif
89 174
90#ifndef EV_USE_EPOLL 175#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 176# define EV_USE_EPOLL 0
92#endif 177#endif
93 178
94#ifndef EV_USE_KQUEUE 179#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 180# define EV_USE_KQUEUE 0
96#endif 181#endif
97 182
183#ifndef EV_USE_PORT
184# define EV_USE_PORT 0
185#endif
186
98#ifndef EV_USE_WIN32 187#ifndef EV_USE_INOTIFY
99# ifdef WIN32 188# define EV_USE_INOTIFY 0
100# define EV_USE_WIN32 0 /* it does not exist, use select */ 189#endif
101# undef EV_USE_SELECT 190
102# define EV_USE_SELECT 1 191#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL
193# define EV_PID_HASHSIZE 1
103# else 194# else
104# define EV_USE_WIN32 0 195# define EV_PID_HASHSIZE 16
105# endif 196# endif
106#endif 197#endif
107 198
108#ifndef EV_USE_REALTIME 199#ifndef EV_INOTIFY_HASHSIZE
109# define EV_USE_REALTIME 1 200# if EV_MINIMAL
201# define EV_INOTIFY_HASHSIZE 1
202# else
203# define EV_INOTIFY_HASHSIZE 16
204# endif
110#endif 205#endif
111 206
112/**/ 207/**/
113 208
114#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
… …
119#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
122#endif 217#endif
123 218
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
124/**/ 238/**/
125 239
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
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130 253
131#include "ev.h"
132
133#if __GNUC__ >= 3 254#if __GNUC__ >= 4
134# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 256# define noinline __attribute__ ((noinline))
136#else 257#else
137# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
138# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
139#endif 263#endif
140 264
141#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
142#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
143 274
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 277
278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
280
147typedef struct ev_watcher *W; 281typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
150 284
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 285static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152 286
287#ifdef _WIN32
153#include "ev_win32.c" 288# include "ev_win32.c"
289#endif
154 290
155/*****************************************************************************/ 291/*****************************************************************************/
156 292
157static void (*syserr_cb)(const char *msg); 293static void (*syserr_cb)(const char *msg);
158 294
295void
159void ev_set_syserr_cb (void (*cb)(const char *msg)) 296ev_set_syserr_cb (void (*cb)(const char *msg))
160{ 297{
161 syserr_cb = cb; 298 syserr_cb = cb;
162} 299}
163 300
164static void 301static void noinline
165syserr (const char *msg) 302syserr (const char *msg)
166{ 303{
167 if (!msg) 304 if (!msg)
168 msg = "(libev) system error"; 305 msg = "(libev) system error";
169 306
… …
176 } 313 }
177} 314}
178 315
179static void *(*alloc)(void *ptr, long size); 316static void *(*alloc)(void *ptr, long size);
180 317
318void
181void ev_set_allocator (void *(*cb)(void *ptr, long size)) 319ev_set_allocator (void *(*cb)(void *ptr, long size))
182{ 320{
183 alloc = cb; 321 alloc = cb;
184} 322}
185 323
186static void * 324inline_speed void *
187ev_realloc (void *ptr, long size) 325ev_realloc (void *ptr, long size)
188{ 326{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 327 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190 328
191 if (!ptr && size) 329 if (!ptr && size)
… …
205typedef struct 343typedef struct
206{ 344{
207 WL head; 345 WL head;
208 unsigned char events; 346 unsigned char events;
209 unsigned char reify; 347 unsigned char reify;
348#if EV_SELECT_IS_WINSOCKET
349 SOCKET handle;
350#endif
210} ANFD; 351} ANFD;
211 352
212typedef struct 353typedef struct
213{ 354{
214 W w; 355 W w;
215 int events; 356 int events;
216} ANPENDING; 357} ANPENDING;
217 358
359#if EV_USE_INOTIFY
360typedef struct
361{
362 WL head;
363} ANFS;
364#endif
365
218#if EV_MULTIPLICITY 366#if EV_MULTIPLICITY
219 367
220struct ev_loop 368 struct ev_loop
221{ 369 {
370 ev_tstamp ev_rt_now;
371 #define ev_rt_now ((loop)->ev_rt_now)
222# define VAR(name,decl) decl; 372 #define VAR(name,decl) decl;
223# include "ev_vars.h" 373 #include "ev_vars.h"
224};
225# undef VAR 374 #undef VAR
375 };
226# include "ev_wrap.h" 376 #include "ev_wrap.h"
377
378 static struct ev_loop default_loop_struct;
379 struct ev_loop *ev_default_loop_ptr;
227 380
228#else 381#else
229 382
383 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 384 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 385 #include "ev_vars.h"
232# undef VAR 386 #undef VAR
387
388 static int ev_default_loop_ptr;
233 389
234#endif 390#endif
235 391
236/*****************************************************************************/ 392/*****************************************************************************/
237 393
238inline ev_tstamp 394ev_tstamp
239ev_time (void) 395ev_time (void)
240{ 396{
241#if EV_USE_REALTIME 397#if EV_USE_REALTIME
242 struct timespec ts; 398 struct timespec ts;
243 clock_gettime (CLOCK_REALTIME, &ts); 399 clock_gettime (CLOCK_REALTIME, &ts);
… …
247 gettimeofday (&tv, 0); 403 gettimeofday (&tv, 0);
248 return tv.tv_sec + tv.tv_usec * 1e-6; 404 return tv.tv_sec + tv.tv_usec * 1e-6;
249#endif 405#endif
250} 406}
251 407
252inline ev_tstamp 408ev_tstamp inline_size
253get_clock (void) 409get_clock (void)
254{ 410{
255#if EV_USE_MONOTONIC 411#if EV_USE_MONOTONIC
256 if (expect_true (have_monotonic)) 412 if (expect_true (have_monotonic))
257 { 413 {
… …
262#endif 418#endif
263 419
264 return ev_time (); 420 return ev_time ();
265} 421}
266 422
423#if EV_MULTIPLICITY
267ev_tstamp 424ev_tstamp
268ev_now (EV_P) 425ev_now (EV_P)
269{ 426{
270 return rt_now; 427 return ev_rt_now;
271} 428}
429#endif
272 430
273#define array_roundsize(type,n) ((n) | 4 & ~3) 431void
432ev_sleep (ev_tstamp delay)
433{
434 if (delay > 0.)
435 {
436#if EV_USE_NANOSLEEP
437 struct timespec ts;
438
439 ts.tv_sec = (time_t)delay;
440 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
441
442 nanosleep (&ts, 0);
443#elif defined(_WIN32)
444 Sleep (delay * 1e3);
445#else
446 struct timeval tv;
447
448 tv.tv_sec = (time_t)delay;
449 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
450
451 select (0, 0, 0, 0, &tv);
452#endif
453 }
454}
455
456/*****************************************************************************/
457
458int inline_size
459array_nextsize (int elem, int cur, int cnt)
460{
461 int ncur = cur + 1;
462
463 do
464 ncur <<= 1;
465 while (cnt > ncur);
466
467 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
468 if (elem * ncur > 4096)
469 {
470 ncur *= elem;
471 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
472 ncur = ncur - sizeof (void *) * 4;
473 ncur /= elem;
474 }
475
476 return ncur;
477}
478
479static noinline void *
480array_realloc (int elem, void *base, int *cur, int cnt)
481{
482 *cur = array_nextsize (elem, *cur, cnt);
483 return ev_realloc (base, elem * *cur);
484}
274 485
275#define array_needsize(type,base,cur,cnt,init) \ 486#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 487 if (expect_false ((cnt) > (cur))) \
277 { \ 488 { \
278 int newcnt = cur; \ 489 int ocur_ = (cur); \
279 do \ 490 (base) = (type *)array_realloc \
280 { \ 491 (sizeof (type), (base), &(cur), (cnt)); \
281 newcnt = array_roundsize (type, newcnt << 1); \ 492 init ((base) + (ocur_), (cur) - ocur_); \
282 } \
283 while ((cnt) > newcnt); \
284 \
285 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286 init (base + cur, newcnt - cur); \
287 cur = newcnt; \
288 } 493 }
289 494
495#if 0
290#define array_slim(type,stem) \ 496#define array_slim(type,stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 497 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \ 498 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \ 499 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 500 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 501 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 } 502 }
297 503#endif
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302 504
303#define array_free(stem, idx) \ 505#define array_free(stem, idx) \
304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 506 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305 507
306/*****************************************************************************/ 508/*****************************************************************************/
307 509
308static void 510void noinline
511ev_feed_event (EV_P_ void *w, int revents)
512{
513 W w_ = (W)w;
514 int pri = ABSPRI (w_);
515
516 if (expect_false (w_->pending))
517 pendings [pri][w_->pending - 1].events |= revents;
518 else
519 {
520 w_->pending = ++pendingcnt [pri];
521 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
522 pendings [pri][w_->pending - 1].w = w_;
523 pendings [pri][w_->pending - 1].events = revents;
524 }
525}
526
527void inline_speed
528queue_events (EV_P_ W *events, int eventcnt, int type)
529{
530 int i;
531
532 for (i = 0; i < eventcnt; ++i)
533 ev_feed_event (EV_A_ events [i], type);
534}
535
536/*****************************************************************************/
537
538void inline_size
309anfds_init (ANFD *base, int count) 539anfds_init (ANFD *base, int count)
310{ 540{
311 while (count--) 541 while (count--)
312 { 542 {
313 base->head = 0; 543 base->head = 0;
… …
316 546
317 ++base; 547 ++base;
318 } 548 }
319} 549}
320 550
321void 551void inline_speed
322ev_feed_event (EV_P_ void *w, int revents)
323{
324 W w_ = (W)w;
325
326 if (w_->pending)
327 {
328 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329 return;
330 }
331
332 w_->pending = ++pendingcnt [ABSPRI (w_)];
333 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336}
337
338static void
339queue_events (EV_P_ W *events, int eventcnt, int type)
340{
341 int i;
342
343 for (i = 0; i < eventcnt; ++i)
344 ev_feed_event (EV_A_ events [i], type);
345}
346
347inline void
348fd_event (EV_P_ int fd, int revents) 552fd_event (EV_P_ int fd, int revents)
349{ 553{
350 ANFD *anfd = anfds + fd; 554 ANFD *anfd = anfds + fd;
351 struct ev_io *w; 555 ev_io *w;
352 556
353 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 557 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
354 { 558 {
355 int ev = w->events & revents; 559 int ev = w->events & revents;
356 560
357 if (ev) 561 if (ev)
358 ev_feed_event (EV_A_ (W)w, ev); 562 ev_feed_event (EV_A_ (W)w, ev);
… …
360} 564}
361 565
362void 566void
363ev_feed_fd_event (EV_P_ int fd, int revents) 567ev_feed_fd_event (EV_P_ int fd, int revents)
364{ 568{
569 if (fd >= 0 && fd < anfdmax)
365 fd_event (EV_A_ fd, revents); 570 fd_event (EV_A_ fd, revents);
366} 571}
367 572
368/*****************************************************************************/ 573void inline_size
369
370static void
371fd_reify (EV_P) 574fd_reify (EV_P)
372{ 575{
373 int i; 576 int i;
374 577
375 for (i = 0; i < fdchangecnt; ++i) 578 for (i = 0; i < fdchangecnt; ++i)
376 { 579 {
377 int fd = fdchanges [i]; 580 int fd = fdchanges [i];
378 ANFD *anfd = anfds + fd; 581 ANFD *anfd = anfds + fd;
379 struct ev_io *w; 582 ev_io *w;
380 583
381 int events = 0; 584 unsigned char events = 0;
382 585
383 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 586 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
384 events |= w->events; 587 events |= (unsigned char)w->events;
385 588
589#if EV_SELECT_IS_WINSOCKET
590 if (events)
591 {
592 unsigned long argp;
593 anfd->handle = _get_osfhandle (fd);
594 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
595 }
596#endif
597
598 {
599 unsigned char o_events = anfd->events;
600 unsigned char o_reify = anfd->reify;
601
386 anfd->reify = 0; 602 anfd->reify = 0;
387
388 method_modify (EV_A_ fd, anfd->events, events);
389 anfd->events = events; 603 anfd->events = events;
604
605 if (o_events != events || o_reify & EV_IOFDSET)
606 backend_modify (EV_A_ fd, o_events, events);
607 }
390 } 608 }
391 609
392 fdchangecnt = 0; 610 fdchangecnt = 0;
393} 611}
394 612
395static void 613void inline_size
396fd_change (EV_P_ int fd) 614fd_change (EV_P_ int fd, int flags)
397{ 615{
398 if (anfds [fd].reify) 616 unsigned char reify = anfds [fd].reify;
399 return;
400
401 anfds [fd].reify = 1; 617 anfds [fd].reify |= flags;
402 618
619 if (expect_true (!reify))
620 {
403 ++fdchangecnt; 621 ++fdchangecnt;
404 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405 fdchanges [fdchangecnt - 1] = fd; 623 fdchanges [fdchangecnt - 1] = fd;
624 }
406} 625}
407 626
408static void 627void inline_speed
409fd_kill (EV_P_ int fd) 628fd_kill (EV_P_ int fd)
410{ 629{
411 struct ev_io *w; 630 ev_io *w;
412 631
413 while ((w = (struct ev_io *)anfds [fd].head)) 632 while ((w = (ev_io *)anfds [fd].head))
414 { 633 {
415 ev_io_stop (EV_A_ w); 634 ev_io_stop (EV_A_ w);
416 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 635 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
417 } 636 }
418} 637}
419 638
420static int 639int inline_size
421fd_valid (int fd) 640fd_valid (int fd)
422{ 641{
423#ifdef WIN32 642#ifdef _WIN32
424 return !!win32_get_osfhandle (fd); 643 return _get_osfhandle (fd) != -1;
425#else 644#else
426 return fcntl (fd, F_GETFD) != -1; 645 return fcntl (fd, F_GETFD) != -1;
427#endif 646#endif
428} 647}
429 648
430/* called on EBADF to verify fds */ 649/* called on EBADF to verify fds */
431static void 650static void noinline
432fd_ebadf (EV_P) 651fd_ebadf (EV_P)
433{ 652{
434 int fd; 653 int fd;
435 654
436 for (fd = 0; fd < anfdmax; ++fd) 655 for (fd = 0; fd < anfdmax; ++fd)
… …
438 if (!fd_valid (fd) == -1 && errno == EBADF) 657 if (!fd_valid (fd) == -1 && errno == EBADF)
439 fd_kill (EV_A_ fd); 658 fd_kill (EV_A_ fd);
440} 659}
441 660
442/* called on ENOMEM in select/poll to kill some fds and retry */ 661/* called on ENOMEM in select/poll to kill some fds and retry */
443static void 662static void noinline
444fd_enomem (EV_P) 663fd_enomem (EV_P)
445{ 664{
446 int fd; 665 int fd;
447 666
448 for (fd = anfdmax; fd--; ) 667 for (fd = anfdmax; fd--; )
… …
451 fd_kill (EV_A_ fd); 670 fd_kill (EV_A_ fd);
452 return; 671 return;
453 } 672 }
454} 673}
455 674
456/* usually called after fork if method needs to re-arm all fds from scratch */ 675/* usually called after fork if backend needs to re-arm all fds from scratch */
457static void 676static void noinline
458fd_rearm_all (EV_P) 677fd_rearm_all (EV_P)
459{ 678{
460 int fd; 679 int fd;
461 680
462 /* this should be highly optimised to not do anything but set a flag */
463 for (fd = 0; fd < anfdmax; ++fd) 681 for (fd = 0; fd < anfdmax; ++fd)
464 if (anfds [fd].events) 682 if (anfds [fd].events)
465 { 683 {
466 anfds [fd].events = 0; 684 anfds [fd].events = 0;
467 fd_change (EV_A_ fd); 685 fd_change (EV_A_ fd, EV_IOFDSET | 1);
468 } 686 }
469} 687}
470 688
471/*****************************************************************************/ 689/*****************************************************************************/
472 690
473static void 691void inline_speed
474upheap (WT *heap, int k) 692upheap (WT *heap, int k)
475{ 693{
476 WT w = heap [k]; 694 WT w = heap [k];
477 695
478 while (k && heap [k >> 1]->at > w->at) 696 while (k)
479 { 697 {
698 int p = (k - 1) >> 1;
699
700 if (heap [p]->at <= w->at)
701 break;
702
480 heap [k] = heap [k >> 1]; 703 heap [k] = heap [p];
481 ((W)heap [k])->active = k + 1; 704 ((W)heap [k])->active = k + 1;
482 k >>= 1; 705 k = p;
483 } 706 }
484 707
485 heap [k] = w; 708 heap [k] = w;
486 ((W)heap [k])->active = k + 1; 709 ((W)heap [k])->active = k + 1;
487
488} 710}
489 711
490static void 712void inline_speed
491downheap (WT *heap, int N, int k) 713downheap (WT *heap, int N, int k)
492{ 714{
493 WT w = heap [k]; 715 WT w = heap [k];
494 716
495 while (k < (N >> 1)) 717 for (;;)
496 { 718 {
497 int j = k << 1; 719 int c = (k << 1) + 1;
498 720
499 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 721 if (c >= N)
500 ++j;
501
502 if (w->at <= heap [j]->at)
503 break; 722 break;
504 723
724 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
725 ? 1 : 0;
726
727 if (w->at <= heap [c]->at)
728 break;
729
505 heap [k] = heap [j]; 730 heap [k] = heap [c];
506 ((W)heap [k])->active = k + 1; 731 ((W)heap [k])->active = k + 1;
732
507 k = j; 733 k = c;
508 } 734 }
509 735
510 heap [k] = w; 736 heap [k] = w;
511 ((W)heap [k])->active = k + 1; 737 ((W)heap [k])->active = k + 1;
738}
739
740void inline_size
741adjustheap (WT *heap, int N, int k)
742{
743 upheap (heap, k);
744 downheap (heap, N, k);
512} 745}
513 746
514/*****************************************************************************/ 747/*****************************************************************************/
515 748
516typedef struct 749typedef struct
… …
522static ANSIG *signals; 755static ANSIG *signals;
523static int signalmax; 756static int signalmax;
524 757
525static int sigpipe [2]; 758static int sigpipe [2];
526static sig_atomic_t volatile gotsig; 759static sig_atomic_t volatile gotsig;
527static struct ev_io sigev; 760static ev_io sigev;
528 761
529static void 762void inline_size
530signals_init (ANSIG *base, int count) 763signals_init (ANSIG *base, int count)
531{ 764{
532 while (count--) 765 while (count--)
533 { 766 {
534 base->head = 0; 767 base->head = 0;
… …
539} 772}
540 773
541static void 774static void
542sighandler (int signum) 775sighandler (int signum)
543{ 776{
544#if WIN32 777#if _WIN32
545 signal (signum, sighandler); 778 signal (signum, sighandler);
546#endif 779#endif
547 780
548 signals [signum - 1].gotsig = 1; 781 signals [signum - 1].gotsig = 1;
549 782
550 if (!gotsig) 783 if (!gotsig)
551 { 784 {
552 int old_errno = errno; 785 int old_errno = errno;
553 gotsig = 1; 786 gotsig = 1;
554#ifdef WIN32
555 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556#else
557 write (sigpipe [1], &signum, 1); 787 write (sigpipe [1], &signum, 1);
558#endif
559 errno = old_errno; 788 errno = old_errno;
560 } 789 }
561} 790}
562 791
563void 792void noinline
564ev_feed_signal_event (EV_P_ int signum) 793ev_feed_signal_event (EV_P_ int signum)
565{ 794{
795 WL w;
796
566#if EV_MULTIPLICITY 797#if EV_MULTIPLICITY
567 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 798 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568#endif 799#endif
569 800
570 --signum; 801 --signum;
571 802
572 if (signum < 0 || signum >= signalmax) 803 if (signum < 0 || signum >= signalmax)
… …
577 for (w = signals [signum].head; w; w = w->next) 808 for (w = signals [signum].head; w; w = w->next)
578 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 809 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579} 810}
580 811
581static void 812static void
582sigcb (EV_P_ struct ev_io *iow, int revents) 813sigcb (EV_P_ ev_io *iow, int revents)
583{ 814{
584 WL w;
585 int signum; 815 int signum;
586 816
587#ifdef WIN32
588 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589#else
590 read (sigpipe [0], &revents, 1); 817 read (sigpipe [0], &revents, 1);
591#endif
592 gotsig = 0; 818 gotsig = 0;
593 819
594 for (signum = signalmax; signum--; ) 820 for (signum = signalmax; signum--; )
595 if (signals [signum].gotsig) 821 if (signals [signum].gotsig)
596 sigevent (EV_A_ signum + 1); 822 ev_feed_signal_event (EV_A_ signum + 1);
597} 823}
598 824
599static void 825void inline_speed
826fd_intern (int fd)
827{
828#ifdef _WIN32
829 int arg = 1;
830 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
831#else
832 fcntl (fd, F_SETFD, FD_CLOEXEC);
833 fcntl (fd, F_SETFL, O_NONBLOCK);
834#endif
835}
836
837static void noinline
600siginit (EV_P) 838siginit (EV_P)
601{ 839{
602#ifndef WIN32 840 fd_intern (sigpipe [0]);
603 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 841 fd_intern (sigpipe [1]);
604 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606 /* rather than sort out wether we really need nb, set it */
607 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609#endif
610 842
611 ev_io_set (&sigev, sigpipe [0], EV_READ); 843 ev_io_set (&sigev, sigpipe [0], EV_READ);
612 ev_io_start (EV_A_ &sigev); 844 ev_io_start (EV_A_ &sigev);
613 ev_unref (EV_A); /* child watcher should not keep loop alive */ 845 ev_unref (EV_A); /* child watcher should not keep loop alive */
614} 846}
615 847
616/*****************************************************************************/ 848/*****************************************************************************/
617 849
618static struct ev_child *childs [PID_HASHSIZE]; 850static WL childs [EV_PID_HASHSIZE];
619 851
620#ifndef WIN32 852#ifndef _WIN32
621 853
622static struct ev_signal childev; 854static ev_signal childev;
855
856void inline_speed
857child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
858{
859 ev_child *w;
860
861 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
862 if (w->pid == pid || !w->pid)
863 {
864 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
865 w->rpid = pid;
866 w->rstatus = status;
867 ev_feed_event (EV_A_ (W)w, EV_CHILD);
868 }
869}
623 870
624#ifndef WCONTINUED 871#ifndef WCONTINUED
625# define WCONTINUED 0 872# define WCONTINUED 0
626#endif 873#endif
627 874
628static void 875static void
629child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
630{
631 struct ev_child *w;
632
633 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
634 if (w->pid == pid || !w->pid)
635 {
636 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
637 w->rpid = pid;
638 w->rstatus = status;
639 ev_feed_event (EV_A_ (W)w, EV_CHILD);
640 }
641}
642
643static void
644childcb (EV_P_ struct ev_signal *sw, int revents) 876childcb (EV_P_ ev_signal *sw, int revents)
645{ 877{
646 int pid, status; 878 int pid, status;
647 879
880 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
648 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 881 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
649 { 882 if (!WCONTINUED
883 || errno != EINVAL
884 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
885 return;
886
650 /* make sure we are called again until all childs have been reaped */ 887 /* make sure we are called again until all childs have been reaped */
888 /* we need to do it this way so that the callback gets called before we continue */
651 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 889 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652 890
653 child_reap (EV_A_ sw, pid, pid, status); 891 child_reap (EV_A_ sw, pid, pid, status);
892 if (EV_PID_HASHSIZE > 1)
654 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 893 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
655 }
656} 894}
657 895
658#endif 896#endif
659 897
660/*****************************************************************************/ 898/*****************************************************************************/
661 899
900#if EV_USE_PORT
901# include "ev_port.c"
902#endif
662#if EV_USE_KQUEUE 903#if EV_USE_KQUEUE
663# include "ev_kqueue.c" 904# include "ev_kqueue.c"
664#endif 905#endif
665#if EV_USE_EPOLL 906#if EV_USE_EPOLL
666# include "ev_epoll.c" 907# include "ev_epoll.c"
… …
683{ 924{
684 return EV_VERSION_MINOR; 925 return EV_VERSION_MINOR;
685} 926}
686 927
687/* return true if we are running with elevated privileges and should ignore env variables */ 928/* return true if we are running with elevated privileges and should ignore env variables */
688static int 929int inline_size
689enable_secure (void) 930enable_secure (void)
690{ 931{
691#ifdef WIN32 932#ifdef _WIN32
692 return 0; 933 return 0;
693#else 934#else
694 return getuid () != geteuid () 935 return getuid () != geteuid ()
695 || getgid () != getegid (); 936 || getgid () != getegid ();
696#endif 937#endif
697} 938}
698 939
699int 940unsigned int
700ev_method (EV_P) 941ev_supported_backends (void)
701{ 942{
702 return method; 943 unsigned int flags = 0;
703}
704 944
705static void 945 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
706loop_init (EV_P_ int methods) 946 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
947 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
948 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
949 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
950
951 return flags;
952}
953
954unsigned int
955ev_recommended_backends (void)
707{ 956{
708 if (!method) 957 unsigned int flags = ev_supported_backends ();
958
959#ifndef __NetBSD__
960 /* kqueue is borked on everything but netbsd apparently */
961 /* it usually doesn't work correctly on anything but sockets and pipes */
962 flags &= ~EVBACKEND_KQUEUE;
963#endif
964#ifdef __APPLE__
965 // flags &= ~EVBACKEND_KQUEUE; for documentation
966 flags &= ~EVBACKEND_POLL;
967#endif
968
969 return flags;
970}
971
972unsigned int
973ev_embeddable_backends (void)
974{
975 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
976 return EVBACKEND_KQUEUE
977 | EVBACKEND_PORT;
978}
979
980unsigned int
981ev_backend (EV_P)
982{
983 return backend;
984}
985
986unsigned int
987ev_loop_count (EV_P)
988{
989 return loop_count;
990}
991
992void
993ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
994{
995 io_blocktime = interval;
996}
997
998void
999ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1000{
1001 timeout_blocktime = interval;
1002}
1003
1004static void noinline
1005loop_init (EV_P_ unsigned int flags)
1006{
1007 if (!backend)
709 { 1008 {
710#if EV_USE_MONOTONIC 1009#if EV_USE_MONOTONIC
711 { 1010 {
712 struct timespec ts; 1011 struct timespec ts;
713 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1012 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714 have_monotonic = 1; 1013 have_monotonic = 1;
715 } 1014 }
716#endif 1015#endif
717 1016
718 rt_now = ev_time (); 1017 ev_rt_now = ev_time ();
719 mn_now = get_clock (); 1018 mn_now = get_clock ();
720 now_floor = mn_now; 1019 now_floor = mn_now;
721 rtmn_diff = rt_now - mn_now; 1020 rtmn_diff = ev_rt_now - mn_now;
722 1021
723 if (methods == EVMETHOD_AUTO) 1022 io_blocktime = 0.;
724 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1023 timeout_blocktime = 0.;
1024
1025 /* pid check not overridable via env */
1026#ifndef _WIN32
1027 if (flags & EVFLAG_FORKCHECK)
1028 curpid = getpid ();
1029#endif
1030
1031 if (!(flags & EVFLAG_NOENV)
1032 && !enable_secure ()
1033 && getenv ("LIBEV_FLAGS"))
725 methods = atoi (getenv ("LIBEV_METHODS")); 1034 flags = atoi (getenv ("LIBEV_FLAGS"));
726 else
727 methods = EVMETHOD_ANY;
728 1035
729 method = 0; 1036 if (!(flags & 0x0000ffffUL))
1037 flags |= ev_recommended_backends ();
1038
1039 backend = 0;
1040 backend_fd = -1;
730#if EV_USE_WIN32 1041#if EV_USE_INOTIFY
731 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1042 fs_fd = -2;
1043#endif
1044
1045#if EV_USE_PORT
1046 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
732#endif 1047#endif
733#if EV_USE_KQUEUE 1048#if EV_USE_KQUEUE
734 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1049 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735#endif 1050#endif
736#if EV_USE_EPOLL 1051#if EV_USE_EPOLL
737 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1052 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738#endif 1053#endif
739#if EV_USE_POLL 1054#if EV_USE_POLL
740 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1055 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741#endif 1056#endif
742#if EV_USE_SELECT 1057#if EV_USE_SELECT
743 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1058 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744#endif 1059#endif
745 1060
746 ev_watcher_init (&sigev, sigcb); 1061 ev_init (&sigev, sigcb);
747 ev_set_priority (&sigev, EV_MAXPRI); 1062 ev_set_priority (&sigev, EV_MAXPRI);
748 } 1063 }
749} 1064}
750 1065
751void 1066static void noinline
752loop_destroy (EV_P) 1067loop_destroy (EV_P)
753{ 1068{
754 int i; 1069 int i;
755 1070
756#if EV_USE_WIN32 1071#if EV_USE_INOTIFY
757 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1072 if (fs_fd >= 0)
1073 close (fs_fd);
1074#endif
1075
1076 if (backend_fd >= 0)
1077 close (backend_fd);
1078
1079#if EV_USE_PORT
1080 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758#endif 1081#endif
759#if EV_USE_KQUEUE 1082#if EV_USE_KQUEUE
760 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1083 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761#endif 1084#endif
762#if EV_USE_EPOLL 1085#if EV_USE_EPOLL
763 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1086 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764#endif 1087#endif
765#if EV_USE_POLL 1088#if EV_USE_POLL
766 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1089 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767#endif 1090#endif
768#if EV_USE_SELECT 1091#if EV_USE_SELECT
769 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1092 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770#endif 1093#endif
771 1094
772 for (i = NUMPRI; i--; ) 1095 for (i = NUMPRI; i--; )
1096 {
773 array_free (pending, [i]); 1097 array_free (pending, [i]);
1098#if EV_IDLE_ENABLE
1099 array_free (idle, [i]);
1100#endif
1101 }
1102
1103 ev_free (anfds); anfdmax = 0;
774 1104
775 /* have to use the microsoft-never-gets-it-right macro */ 1105 /* have to use the microsoft-never-gets-it-right macro */
776 array_free_microshit (fdchange); 1106 array_free (fdchange, EMPTY);
777 array_free_microshit (timer); 1107 array_free (timer, EMPTY);
778 array_free_microshit (periodic); 1108#if EV_PERIODIC_ENABLE
779 array_free_microshit (idle); 1109 array_free (periodic, EMPTY);
780 array_free_microshit (prepare); 1110#endif
781 array_free_microshit (check); 1111#if EV_FORK_ENABLE
1112 array_free (fork, EMPTY);
1113#endif
1114 array_free (prepare, EMPTY);
1115 array_free (check, EMPTY);
782 1116
783 method = 0; 1117 backend = 0;
784} 1118}
785 1119
786static void 1120void inline_size infy_fork (EV_P);
1121
1122void inline_size
787loop_fork (EV_P) 1123loop_fork (EV_P)
788{ 1124{
1125#if EV_USE_PORT
1126 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1127#endif
1128#if EV_USE_KQUEUE
1129 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1130#endif
789#if EV_USE_EPOLL 1131#if EV_USE_EPOLL
790 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1132 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791#endif 1133#endif
792#if EV_USE_KQUEUE 1134#if EV_USE_INOTIFY
793 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1135 infy_fork (EV_A);
794#endif 1136#endif
795 1137
796 if (ev_is_active (&sigev)) 1138 if (ev_is_active (&sigev))
797 { 1139 {
798 /* default loop */ 1140 /* default loop */
… …
811 postfork = 0; 1153 postfork = 0;
812} 1154}
813 1155
814#if EV_MULTIPLICITY 1156#if EV_MULTIPLICITY
815struct ev_loop * 1157struct ev_loop *
816ev_loop_new (int methods) 1158ev_loop_new (unsigned int flags)
817{ 1159{
818 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1160 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
819 1161
820 memset (loop, 0, sizeof (struct ev_loop)); 1162 memset (loop, 0, sizeof (struct ev_loop));
821 1163
822 loop_init (EV_A_ methods); 1164 loop_init (EV_A_ flags);
823 1165
824 if (ev_method (EV_A)) 1166 if (ev_backend (EV_A))
825 return loop; 1167 return loop;
826 1168
827 return 0; 1169 return 0;
828} 1170}
829 1171
… …
841} 1183}
842 1184
843#endif 1185#endif
844 1186
845#if EV_MULTIPLICITY 1187#if EV_MULTIPLICITY
846struct ev_loop default_loop_struct;
847static struct ev_loop *default_loop;
848
849struct ev_loop * 1188struct ev_loop *
1189ev_default_loop_init (unsigned int flags)
850#else 1190#else
851static int default_loop;
852
853int 1191int
1192ev_default_loop (unsigned int flags)
854#endif 1193#endif
855ev_default_loop (int methods)
856{ 1194{
857 if (sigpipe [0] == sigpipe [1]) 1195 if (sigpipe [0] == sigpipe [1])
858 if (pipe (sigpipe)) 1196 if (pipe (sigpipe))
859 return 0; 1197 return 0;
860 1198
861 if (!default_loop) 1199 if (!ev_default_loop_ptr)
862 { 1200 {
863#if EV_MULTIPLICITY 1201#if EV_MULTIPLICITY
864 struct ev_loop *loop = default_loop = &default_loop_struct; 1202 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865#else 1203#else
866 default_loop = 1; 1204 ev_default_loop_ptr = 1;
867#endif 1205#endif
868 1206
869 loop_init (EV_A_ methods); 1207 loop_init (EV_A_ flags);
870 1208
871 if (ev_method (EV_A)) 1209 if (ev_backend (EV_A))
872 { 1210 {
873 siginit (EV_A); 1211 siginit (EV_A);
874 1212
875#ifndef WIN32 1213#ifndef _WIN32
876 ev_signal_init (&childev, childcb, SIGCHLD); 1214 ev_signal_init (&childev, childcb, SIGCHLD);
877 ev_set_priority (&childev, EV_MAXPRI); 1215 ev_set_priority (&childev, EV_MAXPRI);
878 ev_signal_start (EV_A_ &childev); 1216 ev_signal_start (EV_A_ &childev);
879 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1217 ev_unref (EV_A); /* child watcher should not keep loop alive */
880#endif 1218#endif
881 } 1219 }
882 else 1220 else
883 default_loop = 0; 1221 ev_default_loop_ptr = 0;
884 } 1222 }
885 1223
886 return default_loop; 1224 return ev_default_loop_ptr;
887} 1225}
888 1226
889void 1227void
890ev_default_destroy (void) 1228ev_default_destroy (void)
891{ 1229{
892#if EV_MULTIPLICITY 1230#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop; 1231 struct ev_loop *loop = ev_default_loop_ptr;
894#endif 1232#endif
895 1233
896#ifndef WIN32 1234#ifndef _WIN32
897 ev_ref (EV_A); /* child watcher */ 1235 ev_ref (EV_A); /* child watcher */
898 ev_signal_stop (EV_A_ &childev); 1236 ev_signal_stop (EV_A_ &childev);
899#endif 1237#endif
900 1238
901 ev_ref (EV_A); /* signal watcher */ 1239 ev_ref (EV_A); /* signal watcher */
… …
909 1247
910void 1248void
911ev_default_fork (void) 1249ev_default_fork (void)
912{ 1250{
913#if EV_MULTIPLICITY 1251#if EV_MULTIPLICITY
914 struct ev_loop *loop = default_loop; 1252 struct ev_loop *loop = ev_default_loop_ptr;
915#endif 1253#endif
916 1254
917 if (method) 1255 if (backend)
918 postfork = 1; 1256 postfork = 1;
919} 1257}
920 1258
921/*****************************************************************************/ 1259/*****************************************************************************/
922 1260
923static int 1261void
924any_pending (EV_P) 1262ev_invoke (EV_P_ void *w, int revents)
925{ 1263{
926 int pri; 1264 EV_CB_INVOKE ((W)w, revents);
927
928 for (pri = NUMPRI; pri--; )
929 if (pendingcnt [pri])
930 return 1;
931
932 return 0;
933} 1265}
934 1266
935static void 1267void inline_speed
936call_pending (EV_P) 1268call_pending (EV_P)
937{ 1269{
938 int pri; 1270 int pri;
939 1271
940 for (pri = NUMPRI; pri--; ) 1272 for (pri = NUMPRI; pri--; )
941 while (pendingcnt [pri]) 1273 while (pendingcnt [pri])
942 { 1274 {
943 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1275 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944 1276
945 if (p->w) 1277 if (expect_true (p->w))
946 { 1278 {
1279 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1280
947 p->w->pending = 0; 1281 p->w->pending = 0;
948 p->w->cb (EV_A_ p->w, p->events); 1282 EV_CB_INVOKE (p->w, p->events);
949 } 1283 }
950 } 1284 }
951} 1285}
952 1286
953static void 1287void inline_size
954timers_reify (EV_P) 1288timers_reify (EV_P)
955{ 1289{
956 while (timercnt && ((WT)timers [0])->at <= mn_now) 1290 while (timercnt && ((WT)timers [0])->at <= mn_now)
957 { 1291 {
958 struct ev_timer *w = timers [0]; 1292 ev_timer *w = (ev_timer *)timers [0];
959 1293
960 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1294 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
961 1295
962 /* first reschedule or stop timer */ 1296 /* first reschedule or stop timer */
963 if (w->repeat) 1297 if (w->repeat)
964 { 1298 {
965 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1299 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1300
966 ((WT)w)->at = mn_now + w->repeat; 1301 ((WT)w)->at += w->repeat;
1302 if (((WT)w)->at < mn_now)
1303 ((WT)w)->at = mn_now;
1304
967 downheap ((WT *)timers, timercnt, 0); 1305 downheap (timers, timercnt, 0);
968 } 1306 }
969 else 1307 else
970 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1308 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971 1309
972 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1310 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973 } 1311 }
974} 1312}
975 1313
976static void 1314#if EV_PERIODIC_ENABLE
1315void inline_size
977periodics_reify (EV_P) 1316periodics_reify (EV_P)
978{ 1317{
979 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1318 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980 { 1319 {
981 struct ev_periodic *w = periodics [0]; 1320 ev_periodic *w = (ev_periodic *)periodics [0];
982 1321
983 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1322 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
984 1323
985 /* first reschedule or stop timer */ 1324 /* first reschedule or stop timer */
986 if (w->reschedule_cb) 1325 if (w->reschedule_cb)
987 { 1326 {
988 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1327 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
989
990 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1328 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991 downheap ((WT *)periodics, periodiccnt, 0); 1329 downheap (periodics, periodiccnt, 0);
992 } 1330 }
993 else if (w->interval) 1331 else if (w->interval)
994 { 1332 {
995 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1333 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1334 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
996 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1335 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997 downheap ((WT *)periodics, periodiccnt, 0); 1336 downheap (periodics, periodiccnt, 0);
998 } 1337 }
999 else 1338 else
1000 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1339 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001 1340
1002 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1341 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1003 } 1342 }
1004} 1343}
1005 1344
1006static void 1345static void noinline
1007periodics_reschedule (EV_P) 1346periodics_reschedule (EV_P)
1008{ 1347{
1009 int i; 1348 int i;
1010 1349
1011 /* adjust periodics after time jump */ 1350 /* adjust periodics after time jump */
1012 for (i = 0; i < periodiccnt; ++i) 1351 for (i = 0; i < periodiccnt; ++i)
1013 { 1352 {
1014 struct ev_periodic *w = periodics [i]; 1353 ev_periodic *w = (ev_periodic *)periodics [i];
1015 1354
1016 if (w->reschedule_cb) 1355 if (w->reschedule_cb)
1017 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1356 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018 else if (w->interval) 1357 else if (w->interval)
1019 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1358 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1020 } 1359 }
1021 1360
1022 /* now rebuild the heap */ 1361 /* now rebuild the heap */
1023 for (i = periodiccnt >> 1; i--; ) 1362 for (i = periodiccnt >> 1; i--; )
1024 downheap ((WT *)periodics, periodiccnt, i); 1363 downheap (periodics, periodiccnt, i);
1025} 1364}
1365#endif
1026 1366
1027inline int 1367#if EV_IDLE_ENABLE
1028time_update_monotonic (EV_P) 1368void inline_size
1369idle_reify (EV_P)
1029{ 1370{
1030 mn_now = get_clock (); 1371 if (expect_false (idleall))
1031
1032 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033 {
1034 rt_now = rtmn_diff + mn_now;
1035 return 0;
1036 } 1372 {
1037 else 1373 int pri;
1374
1375 for (pri = NUMPRI; pri--; )
1376 {
1377 if (pendingcnt [pri])
1378 break;
1379
1380 if (idlecnt [pri])
1381 {
1382 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1383 break;
1384 }
1385 }
1038 { 1386 }
1039 now_floor = mn_now;
1040 rt_now = ev_time ();
1041 return 1;
1042 }
1043} 1387}
1388#endif
1044 1389
1045static void 1390void inline_speed
1046time_update (EV_P) 1391time_update (EV_P_ ev_tstamp max_block)
1047{ 1392{
1048 int i; 1393 int i;
1049 1394
1050#if EV_USE_MONOTONIC 1395#if EV_USE_MONOTONIC
1051 if (expect_true (have_monotonic)) 1396 if (expect_true (have_monotonic))
1052 { 1397 {
1053 if (time_update_monotonic (EV_A)) 1398 ev_tstamp odiff = rtmn_diff;
1399
1400 mn_now = get_clock ();
1401
1402 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1403 /* interpolate in the meantime */
1404 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1054 { 1405 {
1055 ev_tstamp odiff = rtmn_diff; 1406 ev_rt_now = rtmn_diff + mn_now;
1407 return;
1408 }
1056 1409
1410 now_floor = mn_now;
1411 ev_rt_now = ev_time ();
1412
1057 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1413 /* loop a few times, before making important decisions.
1414 * on the choice of "4": one iteration isn't enough,
1415 * in case we get preempted during the calls to
1416 * ev_time and get_clock. a second call is almost guaranteed
1417 * to succeed in that case, though. and looping a few more times
1418 * doesn't hurt either as we only do this on time-jumps or
1419 * in the unlikely event of having been preempted here.
1420 */
1421 for (i = 4; --i; )
1058 { 1422 {
1059 rtmn_diff = rt_now - mn_now; 1423 rtmn_diff = ev_rt_now - mn_now;
1060 1424
1061 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1425 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062 return; /* all is well */ 1426 return; /* all is well */
1063 1427
1064 rt_now = ev_time (); 1428 ev_rt_now = ev_time ();
1065 mn_now = get_clock (); 1429 mn_now = get_clock ();
1066 now_floor = mn_now; 1430 now_floor = mn_now;
1067 } 1431 }
1068 1432
1433# if EV_PERIODIC_ENABLE
1434 periodics_reschedule (EV_A);
1435# endif
1436 /* no timer adjustment, as the monotonic clock doesn't jump */
1437 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1438 }
1439 else
1440#endif
1441 {
1442 ev_rt_now = ev_time ();
1443
1444 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1445 {
1446#if EV_PERIODIC_ENABLE
1069 periodics_reschedule (EV_A); 1447 periodics_reschedule (EV_A);
1070 /* no timer adjustment, as the monotonic clock doesn't jump */ 1448#endif
1071 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1449 /* adjust timers. this is easy, as the offset is the same for all of them */
1450 for (i = 0; i < timercnt; ++i)
1451 ((WT)timers [i])->at += ev_rt_now - mn_now;
1072 } 1452 }
1073 }
1074 else
1075#endif
1076 {
1077 rt_now = ev_time ();
1078 1453
1079 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080 {
1081 periodics_reschedule (EV_A);
1082
1083 /* adjust timers. this is easy, as the offset is the same for all */
1084 for (i = 0; i < timercnt; ++i)
1085 ((WT)timers [i])->at += rt_now - mn_now;
1086 }
1087
1088 mn_now = rt_now; 1454 mn_now = ev_rt_now;
1089 } 1455 }
1090} 1456}
1091 1457
1092void 1458void
1093ev_ref (EV_P) 1459ev_ref (EV_P)
… …
1104static int loop_done; 1470static int loop_done;
1105 1471
1106void 1472void
1107ev_loop (EV_P_ int flags) 1473ev_loop (EV_P_ int flags)
1108{ 1474{
1109 double block;
1110 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1475 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1476 ? EVUNLOOP_ONE
1477 : EVUNLOOP_CANCEL;
1478
1479 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1111 1480
1112 do 1481 do
1113 { 1482 {
1483#ifndef _WIN32
1484 if (expect_false (curpid)) /* penalise the forking check even more */
1485 if (expect_false (getpid () != curpid))
1486 {
1487 curpid = getpid ();
1488 postfork = 1;
1489 }
1490#endif
1491
1492#if EV_FORK_ENABLE
1493 /* we might have forked, so queue fork handlers */
1494 if (expect_false (postfork))
1495 if (forkcnt)
1496 {
1497 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1498 call_pending (EV_A);
1499 }
1500#endif
1501
1114 /* queue check watchers (and execute them) */ 1502 /* queue prepare watchers (and execute them) */
1115 if (expect_false (preparecnt)) 1503 if (expect_false (preparecnt))
1116 { 1504 {
1117 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1505 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1118 call_pending (EV_A); 1506 call_pending (EV_A);
1119 } 1507 }
1120 1508
1509 if (expect_false (!activecnt))
1510 break;
1511
1121 /* we might have forked, so reify kernel state if necessary */ 1512 /* we might have forked, so reify kernel state if necessary */
1122 if (expect_false (postfork)) 1513 if (expect_false (postfork))
1123 loop_fork (EV_A); 1514 loop_fork (EV_A);
1124 1515
1125 /* update fd-related kernel structures */ 1516 /* update fd-related kernel structures */
1126 fd_reify (EV_A); 1517 fd_reify (EV_A);
1127 1518
1128 /* calculate blocking time */ 1519 /* calculate blocking time */
1520 {
1521 ev_tstamp waittime = 0.;
1522 ev_tstamp sleeptime = 0.;
1129 1523
1130 /* we only need this for !monotonic clock or timers, but as we basically 1524 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1131 always have timers, we just calculate it always */
1132#if EV_USE_MONOTONIC
1133 if (expect_true (have_monotonic))
1134 time_update_monotonic (EV_A);
1135 else
1136#endif
1137 { 1525 {
1138 rt_now = ev_time (); 1526 /* update time to cancel out callback processing overhead */
1139 mn_now = rt_now; 1527 time_update (EV_A_ 1e100);
1140 }
1141 1528
1142 if (flags & EVLOOP_NONBLOCK || idlecnt)
1143 block = 0.;
1144 else
1145 {
1146 block = MAX_BLOCKTIME; 1529 waittime = MAX_BLOCKTIME;
1147 1530
1148 if (timercnt) 1531 if (timercnt)
1149 { 1532 {
1150 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1533 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151 if (block > to) block = to; 1534 if (waittime > to) waittime = to;
1152 } 1535 }
1153 1536
1537#if EV_PERIODIC_ENABLE
1154 if (periodiccnt) 1538 if (periodiccnt)
1155 { 1539 {
1156 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1540 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157 if (block > to) block = to; 1541 if (waittime > to) waittime = to;
1158 } 1542 }
1543#endif
1159 1544
1160 if (block < 0.) block = 0.; 1545 if (expect_false (waittime < timeout_blocktime))
1546 waittime = timeout_blocktime;
1547
1548 sleeptime = waittime - backend_fudge;
1549
1550 if (expect_true (sleeptime > io_blocktime))
1551 sleeptime = io_blocktime;
1552
1553 if (sleeptime)
1554 {
1555 ev_sleep (sleeptime);
1556 waittime -= sleeptime;
1557 }
1161 } 1558 }
1162 1559
1163 method_poll (EV_A_ block); 1560 ++loop_count;
1561 backend_poll (EV_A_ waittime);
1164 1562
1165 /* update rt_now, do magic */ 1563 /* update ev_rt_now, do magic */
1166 time_update (EV_A); 1564 time_update (EV_A_ waittime + sleeptime);
1565 }
1167 1566
1168 /* queue pending timers and reschedule them */ 1567 /* queue pending timers and reschedule them */
1169 timers_reify (EV_A); /* relative timers called last */ 1568 timers_reify (EV_A); /* relative timers called last */
1569#if EV_PERIODIC_ENABLE
1170 periodics_reify (EV_A); /* absolute timers called first */ 1570 periodics_reify (EV_A); /* absolute timers called first */
1571#endif
1171 1572
1573#if EV_IDLE_ENABLE
1172 /* queue idle watchers unless io or timers are pending */ 1574 /* queue idle watchers unless other events are pending */
1173 if (idlecnt && !any_pending (EV_A)) 1575 idle_reify (EV_A);
1174 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1576#endif
1175 1577
1176 /* queue check watchers, to be executed first */ 1578 /* queue check watchers, to be executed first */
1177 if (checkcnt) 1579 if (expect_false (checkcnt))
1178 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1580 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179 1581
1180 call_pending (EV_A); 1582 call_pending (EV_A);
1583
1181 } 1584 }
1182 while (activecnt && !loop_done); 1585 while (expect_true (activecnt && !loop_done));
1183 1586
1184 if (loop_done != 2) 1587 if (loop_done == EVUNLOOP_ONE)
1185 loop_done = 0; 1588 loop_done = EVUNLOOP_CANCEL;
1186} 1589}
1187 1590
1188void 1591void
1189ev_unloop (EV_P_ int how) 1592ev_unloop (EV_P_ int how)
1190{ 1593{
1191 loop_done = how; 1594 loop_done = how;
1192} 1595}
1193 1596
1194/*****************************************************************************/ 1597/*****************************************************************************/
1195 1598
1196inline void 1599void inline_size
1197wlist_add (WL *head, WL elem) 1600wlist_add (WL *head, WL elem)
1198{ 1601{
1199 elem->next = *head; 1602 elem->next = *head;
1200 *head = elem; 1603 *head = elem;
1201} 1604}
1202 1605
1203inline void 1606void inline_size
1204wlist_del (WL *head, WL elem) 1607wlist_del (WL *head, WL elem)
1205{ 1608{
1206 while (*head) 1609 while (*head)
1207 { 1610 {
1208 if (*head == elem) 1611 if (*head == elem)
… …
1213 1616
1214 head = &(*head)->next; 1617 head = &(*head)->next;
1215 } 1618 }
1216} 1619}
1217 1620
1218inline void 1621void inline_speed
1219ev_clear_pending (EV_P_ W w) 1622clear_pending (EV_P_ W w)
1220{ 1623{
1221 if (w->pending) 1624 if (w->pending)
1222 { 1625 {
1223 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1626 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1224 w->pending = 0; 1627 w->pending = 0;
1225 } 1628 }
1226} 1629}
1227 1630
1228inline void 1631int
1632ev_clear_pending (EV_P_ void *w)
1633{
1634 W w_ = (W)w;
1635 int pending = w_->pending;
1636
1637 if (expect_true (pending))
1638 {
1639 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1640 w_->pending = 0;
1641 p->w = 0;
1642 return p->events;
1643 }
1644 else
1645 return 0;
1646}
1647
1648void inline_size
1649pri_adjust (EV_P_ W w)
1650{
1651 int pri = w->priority;
1652 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1653 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1654 w->priority = pri;
1655}
1656
1657void inline_speed
1229ev_start (EV_P_ W w, int active) 1658ev_start (EV_P_ W w, int active)
1230{ 1659{
1231 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1660 pri_adjust (EV_A_ w);
1232 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1233
1234 w->active = active; 1661 w->active = active;
1235 ev_ref (EV_A); 1662 ev_ref (EV_A);
1236} 1663}
1237 1664
1238inline void 1665void inline_size
1239ev_stop (EV_P_ W w) 1666ev_stop (EV_P_ W w)
1240{ 1667{
1241 ev_unref (EV_A); 1668 ev_unref (EV_A);
1242 w->active = 0; 1669 w->active = 0;
1243} 1670}
1244 1671
1245/*****************************************************************************/ 1672/*****************************************************************************/
1246 1673
1247void 1674void noinline
1248ev_io_start (EV_P_ struct ev_io *w) 1675ev_io_start (EV_P_ ev_io *w)
1249{ 1676{
1250 int fd = w->fd; 1677 int fd = w->fd;
1251 1678
1252 if (ev_is_active (w)) 1679 if (expect_false (ev_is_active (w)))
1253 return; 1680 return;
1254 1681
1255 assert (("ev_io_start called with negative fd", fd >= 0)); 1682 assert (("ev_io_start called with negative fd", fd >= 0));
1256 1683
1257 ev_start (EV_A_ (W)w, 1); 1684 ev_start (EV_A_ (W)w, 1);
1258 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1685 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1259 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1686 wlist_add (&anfds[fd].head, (WL)w);
1260 1687
1261 fd_change (EV_A_ fd); 1688 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1689 w->events &= ~EV_IOFDSET;
1262} 1690}
1263 1691
1264void 1692void noinline
1265ev_io_stop (EV_P_ struct ev_io *w) 1693ev_io_stop (EV_P_ ev_io *w)
1266{ 1694{
1267 ev_clear_pending (EV_A_ (W)w); 1695 clear_pending (EV_A_ (W)w);
1268 if (!ev_is_active (w)) 1696 if (expect_false (!ev_is_active (w)))
1269 return; 1697 return;
1270 1698
1699 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1700
1271 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1701 wlist_del (&anfds[w->fd].head, (WL)w);
1272 ev_stop (EV_A_ (W)w); 1702 ev_stop (EV_A_ (W)w);
1273 1703
1274 fd_change (EV_A_ w->fd); 1704 fd_change (EV_A_ w->fd, 1);
1275} 1705}
1276 1706
1277void 1707void noinline
1278ev_timer_start (EV_P_ struct ev_timer *w) 1708ev_timer_start (EV_P_ ev_timer *w)
1279{ 1709{
1280 if (ev_is_active (w)) 1710 if (expect_false (ev_is_active (w)))
1281 return; 1711 return;
1282 1712
1283 ((WT)w)->at += mn_now; 1713 ((WT)w)->at += mn_now;
1284 1714
1285 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1715 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286 1716
1287 ev_start (EV_A_ (W)w, ++timercnt); 1717 ev_start (EV_A_ (W)w, ++timercnt);
1288 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1718 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1289 timers [timercnt - 1] = w; 1719 timers [timercnt - 1] = (WT)w;
1290 upheap ((WT *)timers, timercnt - 1); 1720 upheap (timers, timercnt - 1);
1291 1721
1292 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1722 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1293} 1723}
1294 1724
1295void 1725void noinline
1296ev_timer_stop (EV_P_ struct ev_timer *w) 1726ev_timer_stop (EV_P_ ev_timer *w)
1297{ 1727{
1298 ev_clear_pending (EV_A_ (W)w); 1728 clear_pending (EV_A_ (W)w);
1299 if (!ev_is_active (w)) 1729 if (expect_false (!ev_is_active (w)))
1300 return; 1730 return;
1301 1731
1302 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1732 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1303 1733
1304 if (((W)w)->active < timercnt--) 1734 {
1735 int active = ((W)w)->active;
1736
1737 if (expect_true (--active < --timercnt))
1305 { 1738 {
1306 timers [((W)w)->active - 1] = timers [timercnt]; 1739 timers [active] = timers [timercnt];
1307 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1740 adjustheap (timers, timercnt, active);
1308 } 1741 }
1742 }
1309 1743
1310 ((WT)w)->at = w->repeat; 1744 ((WT)w)->at -= mn_now;
1311 1745
1312 ev_stop (EV_A_ (W)w); 1746 ev_stop (EV_A_ (W)w);
1313} 1747}
1314 1748
1315void 1749void noinline
1316ev_timer_again (EV_P_ struct ev_timer *w) 1750ev_timer_again (EV_P_ ev_timer *w)
1317{ 1751{
1318 if (ev_is_active (w)) 1752 if (ev_is_active (w))
1319 { 1753 {
1320 if (w->repeat) 1754 if (w->repeat)
1321 { 1755 {
1322 ((WT)w)->at = mn_now + w->repeat; 1756 ((WT)w)->at = mn_now + w->repeat;
1323 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1757 adjustheap (timers, timercnt, ((W)w)->active - 1);
1324 } 1758 }
1325 else 1759 else
1326 ev_timer_stop (EV_A_ w); 1760 ev_timer_stop (EV_A_ w);
1327 } 1761 }
1328 else if (w->repeat) 1762 else if (w->repeat)
1763 {
1764 w->at = w->repeat;
1329 ev_timer_start (EV_A_ w); 1765 ev_timer_start (EV_A_ w);
1766 }
1330} 1767}
1331 1768
1332void 1769#if EV_PERIODIC_ENABLE
1770void noinline
1333ev_periodic_start (EV_P_ struct ev_periodic *w) 1771ev_periodic_start (EV_P_ ev_periodic *w)
1334{ 1772{
1335 if (ev_is_active (w)) 1773 if (expect_false (ev_is_active (w)))
1336 return; 1774 return;
1337 1775
1338 if (w->reschedule_cb) 1776 if (w->reschedule_cb)
1339 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1777 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340 else if (w->interval) 1778 else if (w->interval)
1341 { 1779 {
1342 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1780 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343 /* this formula differs from the one in periodic_reify because we do not always round up */ 1781 /* this formula differs from the one in periodic_reify because we do not always round up */
1344 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1782 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1345 } 1783 }
1784 else
1785 ((WT)w)->at = w->offset;
1346 1786
1347 ev_start (EV_A_ (W)w, ++periodiccnt); 1787 ev_start (EV_A_ (W)w, ++periodiccnt);
1348 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1788 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1349 periodics [periodiccnt - 1] = w; 1789 periodics [periodiccnt - 1] = (WT)w;
1350 upheap ((WT *)periodics, periodiccnt - 1); 1790 upheap (periodics, periodiccnt - 1);
1351 1791
1352 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1792 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1353} 1793}
1354 1794
1355void 1795void noinline
1356ev_periodic_stop (EV_P_ struct ev_periodic *w) 1796ev_periodic_stop (EV_P_ ev_periodic *w)
1357{ 1797{
1358 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1359 if (!ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1360 return; 1800 return;
1361 1801
1362 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1802 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1363 1803
1364 if (((W)w)->active < periodiccnt--) 1804 {
1805 int active = ((W)w)->active;
1806
1807 if (expect_true (--active < --periodiccnt))
1365 { 1808 {
1366 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1809 periodics [active] = periodics [periodiccnt];
1367 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1810 adjustheap (periodics, periodiccnt, active);
1368 } 1811 }
1812 }
1369 1813
1370 ev_stop (EV_A_ (W)w); 1814 ev_stop (EV_A_ (W)w);
1371} 1815}
1372 1816
1373void 1817void noinline
1374ev_periodic_again (EV_P_ struct ev_periodic *w) 1818ev_periodic_again (EV_P_ ev_periodic *w)
1375{ 1819{
1820 /* TODO: use adjustheap and recalculation */
1376 ev_periodic_stop (EV_A_ w); 1821 ev_periodic_stop (EV_A_ w);
1377 ev_periodic_start (EV_A_ w); 1822 ev_periodic_start (EV_A_ w);
1378} 1823}
1379 1824#endif
1380void
1381ev_idle_start (EV_P_ struct ev_idle *w)
1382{
1383 if (ev_is_active (w))
1384 return;
1385
1386 ev_start (EV_A_ (W)w, ++idlecnt);
1387 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1388 idles [idlecnt - 1] = w;
1389}
1390
1391void
1392ev_idle_stop (EV_P_ struct ev_idle *w)
1393{
1394 ev_clear_pending (EV_A_ (W)w);
1395 if (ev_is_active (w))
1396 return;
1397
1398 idles [((W)w)->active - 1] = idles [--idlecnt];
1399 ev_stop (EV_A_ (W)w);
1400}
1401
1402void
1403ev_prepare_start (EV_P_ struct ev_prepare *w)
1404{
1405 if (ev_is_active (w))
1406 return;
1407
1408 ev_start (EV_A_ (W)w, ++preparecnt);
1409 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1410 prepares [preparecnt - 1] = w;
1411}
1412
1413void
1414ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415{
1416 ev_clear_pending (EV_A_ (W)w);
1417 if (ev_is_active (w))
1418 return;
1419
1420 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421 ev_stop (EV_A_ (W)w);
1422}
1423
1424void
1425ev_check_start (EV_P_ struct ev_check *w)
1426{
1427 if (ev_is_active (w))
1428 return;
1429
1430 ev_start (EV_A_ (W)w, ++checkcnt);
1431 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1432 checks [checkcnt - 1] = w;
1433}
1434
1435void
1436ev_check_stop (EV_P_ struct ev_check *w)
1437{
1438 ev_clear_pending (EV_A_ (W)w);
1439 if (ev_is_active (w))
1440 return;
1441
1442 checks [((W)w)->active - 1] = checks [--checkcnt];
1443 ev_stop (EV_A_ (W)w);
1444}
1445 1825
1446#ifndef SA_RESTART 1826#ifndef SA_RESTART
1447# define SA_RESTART 0 1827# define SA_RESTART 0
1448#endif 1828#endif
1449 1829
1450void 1830void noinline
1451ev_signal_start (EV_P_ struct ev_signal *w) 1831ev_signal_start (EV_P_ ev_signal *w)
1452{ 1832{
1453#if EV_MULTIPLICITY 1833#if EV_MULTIPLICITY
1454 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1834 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455#endif 1835#endif
1456 if (ev_is_active (w)) 1836 if (expect_false (ev_is_active (w)))
1457 return; 1837 return;
1458 1838
1459 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1839 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460 1840
1841 {
1842#ifndef _WIN32
1843 sigset_t full, prev;
1844 sigfillset (&full);
1845 sigprocmask (SIG_SETMASK, &full, &prev);
1846#endif
1847
1848 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1849
1850#ifndef _WIN32
1851 sigprocmask (SIG_SETMASK, &prev, 0);
1852#endif
1853 }
1854
1461 ev_start (EV_A_ (W)w, 1); 1855 ev_start (EV_A_ (W)w, 1);
1462 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1856 wlist_add (&signals [w->signum - 1].head, (WL)w);
1464 1857
1465 if (!((WL)w)->next) 1858 if (!((WL)w)->next)
1466 { 1859 {
1467#if WIN32 1860#if _WIN32
1468 signal (w->signum, sighandler); 1861 signal (w->signum, sighandler);
1469#else 1862#else
1470 struct sigaction sa; 1863 struct sigaction sa;
1471 sa.sa_handler = sighandler; 1864 sa.sa_handler = sighandler;
1472 sigfillset (&sa.sa_mask); 1865 sigfillset (&sa.sa_mask);
… …
1474 sigaction (w->signum, &sa, 0); 1867 sigaction (w->signum, &sa, 0);
1475#endif 1868#endif
1476 } 1869 }
1477} 1870}
1478 1871
1479void 1872void noinline
1480ev_signal_stop (EV_P_ struct ev_signal *w) 1873ev_signal_stop (EV_P_ ev_signal *w)
1481{ 1874{
1482 ev_clear_pending (EV_A_ (W)w); 1875 clear_pending (EV_A_ (W)w);
1483 if (!ev_is_active (w)) 1876 if (expect_false (!ev_is_active (w)))
1484 return; 1877 return;
1485 1878
1486 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1879 wlist_del (&signals [w->signum - 1].head, (WL)w);
1487 ev_stop (EV_A_ (W)w); 1880 ev_stop (EV_A_ (W)w);
1488 1881
1489 if (!signals [w->signum - 1].head) 1882 if (!signals [w->signum - 1].head)
1490 signal (w->signum, SIG_DFL); 1883 signal (w->signum, SIG_DFL);
1491} 1884}
1492 1885
1493void 1886void
1494ev_child_start (EV_P_ struct ev_child *w) 1887ev_child_start (EV_P_ ev_child *w)
1495{ 1888{
1496#if EV_MULTIPLICITY 1889#if EV_MULTIPLICITY
1497 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1890 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498#endif 1891#endif
1499 if (ev_is_active (w)) 1892 if (expect_false (ev_is_active (w)))
1500 return; 1893 return;
1501 1894
1502 ev_start (EV_A_ (W)w, 1); 1895 ev_start (EV_A_ (W)w, 1);
1503 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1896 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1504} 1897}
1505 1898
1506void 1899void
1507ev_child_stop (EV_P_ struct ev_child *w) 1900ev_child_stop (EV_P_ ev_child *w)
1508{ 1901{
1509 ev_clear_pending (EV_A_ (W)w); 1902 clear_pending (EV_A_ (W)w);
1510 if (ev_is_active (w)) 1903 if (expect_false (!ev_is_active (w)))
1511 return; 1904 return;
1512 1905
1513 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1906 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1514 ev_stop (EV_A_ (W)w); 1907 ev_stop (EV_A_ (W)w);
1515} 1908}
1516 1909
1910#if EV_STAT_ENABLE
1911
1912# ifdef _WIN32
1913# undef lstat
1914# define lstat(a,b) _stati64 (a,b)
1915# endif
1916
1917#define DEF_STAT_INTERVAL 5.0074891
1918#define MIN_STAT_INTERVAL 0.1074891
1919
1920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1921
1922#if EV_USE_INOTIFY
1923# define EV_INOTIFY_BUFSIZE 8192
1924
1925static void noinline
1926infy_add (EV_P_ ev_stat *w)
1927{
1928 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);
1929
1930 if (w->wd < 0)
1931 {
1932 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1933
1934 /* monitor some parent directory for speedup hints */
1935 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1936 {
1937 char path [4096];
1938 strcpy (path, w->path);
1939
1940 do
1941 {
1942 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1943 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1944
1945 char *pend = strrchr (path, '/');
1946
1947 if (!pend)
1948 break; /* whoops, no '/', complain to your admin */
1949
1950 *pend = 0;
1951 w->wd = inotify_add_watch (fs_fd, path, mask);
1952 }
1953 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1954 }
1955 }
1956 else
1957 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1958
1959 if (w->wd >= 0)
1960 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1961}
1962
1963static void noinline
1964infy_del (EV_P_ ev_stat *w)
1965{
1966 int slot;
1967 int wd = w->wd;
1968
1969 if (wd < 0)
1970 return;
1971
1972 w->wd = -2;
1973 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1974 wlist_del (&fs_hash [slot].head, (WL)w);
1975
1976 /* remove this watcher, if others are watching it, they will rearm */
1977 inotify_rm_watch (fs_fd, wd);
1978}
1979
1980static void noinline
1981infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1982{
1983 if (slot < 0)
1984 /* overflow, need to check for all hahs slots */
1985 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1986 infy_wd (EV_A_ slot, wd, ev);
1987 else
1988 {
1989 WL w_;
1990
1991 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1992 {
1993 ev_stat *w = (ev_stat *)w_;
1994 w_ = w_->next; /* lets us remove this watcher and all before it */
1995
1996 if (w->wd == wd || wd == -1)
1997 {
1998 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1999 {
2000 w->wd = -1;
2001 infy_add (EV_A_ w); /* re-add, no matter what */
2002 }
2003
2004 stat_timer_cb (EV_A_ &w->timer, 0);
2005 }
2006 }
2007 }
2008}
2009
2010static void
2011infy_cb (EV_P_ ev_io *w, int revents)
2012{
2013 char buf [EV_INOTIFY_BUFSIZE];
2014 struct inotify_event *ev = (struct inotify_event *)buf;
2015 int ofs;
2016 int len = read (fs_fd, buf, sizeof (buf));
2017
2018 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2019 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2020}
2021
2022void inline_size
2023infy_init (EV_P)
2024{
2025 if (fs_fd != -2)
2026 return;
2027
2028 fs_fd = inotify_init ();
2029
2030 if (fs_fd >= 0)
2031 {
2032 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2033 ev_set_priority (&fs_w, EV_MAXPRI);
2034 ev_io_start (EV_A_ &fs_w);
2035 }
2036}
2037
2038void inline_size
2039infy_fork (EV_P)
2040{
2041 int slot;
2042
2043 if (fs_fd < 0)
2044 return;
2045
2046 close (fs_fd);
2047 fs_fd = inotify_init ();
2048
2049 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2050 {
2051 WL w_ = fs_hash [slot].head;
2052 fs_hash [slot].head = 0;
2053
2054 while (w_)
2055 {
2056 ev_stat *w = (ev_stat *)w_;
2057 w_ = w_->next; /* lets us add this watcher */
2058
2059 w->wd = -1;
2060
2061 if (fs_fd >= 0)
2062 infy_add (EV_A_ w); /* re-add, no matter what */
2063 else
2064 ev_timer_start (EV_A_ &w->timer);
2065 }
2066
2067 }
2068}
2069
2070#endif
2071
2072void
2073ev_stat_stat (EV_P_ ev_stat *w)
2074{
2075 if (lstat (w->path, &w->attr) < 0)
2076 w->attr.st_nlink = 0;
2077 else if (!w->attr.st_nlink)
2078 w->attr.st_nlink = 1;
2079}
2080
2081static void noinline
2082stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2083{
2084 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2085
2086 /* we copy this here each the time so that */
2087 /* prev has the old value when the callback gets invoked */
2088 w->prev = w->attr;
2089 ev_stat_stat (EV_A_ w);
2090
2091 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2092 if (
2093 w->prev.st_dev != w->attr.st_dev
2094 || w->prev.st_ino != w->attr.st_ino
2095 || w->prev.st_mode != w->attr.st_mode
2096 || w->prev.st_nlink != w->attr.st_nlink
2097 || w->prev.st_uid != w->attr.st_uid
2098 || w->prev.st_gid != w->attr.st_gid
2099 || w->prev.st_rdev != w->attr.st_rdev
2100 || w->prev.st_size != w->attr.st_size
2101 || w->prev.st_atime != w->attr.st_atime
2102 || w->prev.st_mtime != w->attr.st_mtime
2103 || w->prev.st_ctime != w->attr.st_ctime
2104 ) {
2105 #if EV_USE_INOTIFY
2106 infy_del (EV_A_ w);
2107 infy_add (EV_A_ w);
2108 ev_stat_stat (EV_A_ w); /* avoid race... */
2109 #endif
2110
2111 ev_feed_event (EV_A_ w, EV_STAT);
2112 }
2113}
2114
2115void
2116ev_stat_start (EV_P_ ev_stat *w)
2117{
2118 if (expect_false (ev_is_active (w)))
2119 return;
2120
2121 /* since we use memcmp, we need to clear any padding data etc. */
2122 memset (&w->prev, 0, sizeof (ev_statdata));
2123 memset (&w->attr, 0, sizeof (ev_statdata));
2124
2125 ev_stat_stat (EV_A_ w);
2126
2127 if (w->interval < MIN_STAT_INTERVAL)
2128 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2129
2130 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2131 ev_set_priority (&w->timer, ev_priority (w));
2132
2133#if EV_USE_INOTIFY
2134 infy_init (EV_A);
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w);
2138 else
2139#endif
2140 ev_timer_start (EV_A_ &w->timer);
2141
2142 ev_start (EV_A_ (W)w, 1);
2143}
2144
2145void
2146ev_stat_stop (EV_P_ ev_stat *w)
2147{
2148 clear_pending (EV_A_ (W)w);
2149 if (expect_false (!ev_is_active (w)))
2150 return;
2151
2152#if EV_USE_INOTIFY
2153 infy_del (EV_A_ w);
2154#endif
2155 ev_timer_stop (EV_A_ &w->timer);
2156
2157 ev_stop (EV_A_ (W)w);
2158}
2159#endif
2160
2161#if EV_IDLE_ENABLE
2162void
2163ev_idle_start (EV_P_ ev_idle *w)
2164{
2165 if (expect_false (ev_is_active (w)))
2166 return;
2167
2168 pri_adjust (EV_A_ (W)w);
2169
2170 {
2171 int active = ++idlecnt [ABSPRI (w)];
2172
2173 ++idleall;
2174 ev_start (EV_A_ (W)w, active);
2175
2176 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2177 idles [ABSPRI (w)][active - 1] = w;
2178 }
2179}
2180
2181void
2182ev_idle_stop (EV_P_ ev_idle *w)
2183{
2184 clear_pending (EV_A_ (W)w);
2185 if (expect_false (!ev_is_active (w)))
2186 return;
2187
2188 {
2189 int active = ((W)w)->active;
2190
2191 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2192 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2193
2194 ev_stop (EV_A_ (W)w);
2195 --idleall;
2196 }
2197}
2198#endif
2199
2200void
2201ev_prepare_start (EV_P_ ev_prepare *w)
2202{
2203 if (expect_false (ev_is_active (w)))
2204 return;
2205
2206 ev_start (EV_A_ (W)w, ++preparecnt);
2207 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2208 prepares [preparecnt - 1] = w;
2209}
2210
2211void
2212ev_prepare_stop (EV_P_ ev_prepare *w)
2213{
2214 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w)))
2216 return;
2217
2218 {
2219 int active = ((W)w)->active;
2220 prepares [active - 1] = prepares [--preparecnt];
2221 ((W)prepares [active - 1])->active = active;
2222 }
2223
2224 ev_stop (EV_A_ (W)w);
2225}
2226
2227void
2228ev_check_start (EV_P_ ev_check *w)
2229{
2230 if (expect_false (ev_is_active (w)))
2231 return;
2232
2233 ev_start (EV_A_ (W)w, ++checkcnt);
2234 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2235 checks [checkcnt - 1] = w;
2236}
2237
2238void
2239ev_check_stop (EV_P_ ev_check *w)
2240{
2241 clear_pending (EV_A_ (W)w);
2242 if (expect_false (!ev_is_active (w)))
2243 return;
2244
2245 {
2246 int active = ((W)w)->active;
2247 checks [active - 1] = checks [--checkcnt];
2248 ((W)checks [active - 1])->active = active;
2249 }
2250
2251 ev_stop (EV_A_ (W)w);
2252}
2253
2254#if EV_EMBED_ENABLE
2255void noinline
2256ev_embed_sweep (EV_P_ ev_embed *w)
2257{
2258 ev_loop (w->other, EVLOOP_NONBLOCK);
2259}
2260
2261static void
2262embed_io_cb (EV_P_ ev_io *io, int revents)
2263{
2264 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2265
2266 if (ev_cb (w))
2267 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2268 else
2269 ev_embed_sweep (loop, w);
2270}
2271
2272static void
2273embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2274{
2275 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2276
2277 fd_reify (w->other);
2278}
2279
2280void
2281ev_embed_start (EV_P_ ev_embed *w)
2282{
2283 if (expect_false (ev_is_active (w)))
2284 return;
2285
2286 {
2287 struct ev_loop *loop = w->other;
2288 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2289 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2290 }
2291
2292 ev_set_priority (&w->io, ev_priority (w));
2293 ev_io_start (EV_A_ &w->io);
2294
2295 ev_prepare_init (&w->prepare, embed_prepare_cb);
2296 ev_set_priority (&w->prepare, EV_MINPRI);
2297 ev_prepare_start (EV_A_ &w->prepare);
2298
2299 ev_start (EV_A_ (W)w, 1);
2300}
2301
2302void
2303ev_embed_stop (EV_P_ ev_embed *w)
2304{
2305 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w)))
2307 return;
2308
2309 ev_io_stop (EV_A_ &w->io);
2310 ev_prepare_stop (EV_A_ &w->prepare);
2311
2312 ev_stop (EV_A_ (W)w);
2313}
2314#endif
2315
2316#if EV_FORK_ENABLE
2317void
2318ev_fork_start (EV_P_ ev_fork *w)
2319{
2320 if (expect_false (ev_is_active (w)))
2321 return;
2322
2323 ev_start (EV_A_ (W)w, ++forkcnt);
2324 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2325 forks [forkcnt - 1] = w;
2326}
2327
2328void
2329ev_fork_stop (EV_P_ ev_fork *w)
2330{
2331 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w)))
2333 return;
2334
2335 {
2336 int active = ((W)w)->active;
2337 forks [active - 1] = forks [--forkcnt];
2338 ((W)forks [active - 1])->active = active;
2339 }
2340
2341 ev_stop (EV_A_ (W)w);
2342}
2343#endif
2344
1517/*****************************************************************************/ 2345/*****************************************************************************/
1518 2346
1519struct ev_once 2347struct ev_once
1520{ 2348{
1521 struct ev_io io; 2349 ev_io io;
1522 struct ev_timer to; 2350 ev_timer to;
1523 void (*cb)(int revents, void *arg); 2351 void (*cb)(int revents, void *arg);
1524 void *arg; 2352 void *arg;
1525}; 2353};
1526 2354
1527static void 2355static void
… …
1536 2364
1537 cb (revents, arg); 2365 cb (revents, arg);
1538} 2366}
1539 2367
1540static void 2368static void
1541once_cb_io (EV_P_ struct ev_io *w, int revents) 2369once_cb_io (EV_P_ ev_io *w, int revents)
1542{ 2370{
1543 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2371 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1544} 2372}
1545 2373
1546static void 2374static void
1547once_cb_to (EV_P_ struct ev_timer *w, int revents) 2375once_cb_to (EV_P_ ev_timer *w, int revents)
1548{ 2376{
1549 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2377 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1550} 2378}
1551 2379
1552void 2380void
1553ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2381ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1554{ 2382{
1555 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2383 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1556 2384
1557 if (!once) 2385 if (expect_false (!once))
2386 {
1558 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2387 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1559 else 2388 return;
1560 { 2389 }
2390
1561 once->cb = cb; 2391 once->cb = cb;
1562 once->arg = arg; 2392 once->arg = arg;
1563 2393
1564 ev_watcher_init (&once->io, once_cb_io); 2394 ev_init (&once->io, once_cb_io);
1565 if (fd >= 0) 2395 if (fd >= 0)
1566 { 2396 {
1567 ev_io_set (&once->io, fd, events); 2397 ev_io_set (&once->io, fd, events);
1568 ev_io_start (EV_A_ &once->io); 2398 ev_io_start (EV_A_ &once->io);
1569 } 2399 }
1570 2400
1571 ev_watcher_init (&once->to, once_cb_to); 2401 ev_init (&once->to, once_cb_to);
1572 if (timeout >= 0.) 2402 if (timeout >= 0.)
1573 { 2403 {
1574 ev_timer_set (&once->to, timeout, 0.); 2404 ev_timer_set (&once->to, timeout, 0.);
1575 ev_timer_start (EV_A_ &once->to); 2405 ev_timer_start (EV_A_ &once->to);
1576 }
1577 } 2406 }
1578} 2407}
1579 2408
2409#if EV_MULTIPLICITY
2410 #include "ev_wrap.h"
2411#endif
2412
2413#ifdef __cplusplus
2414}
2415#endif
2416

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