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Comparing libev/ev.c (file contents):
Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC vs.
Revision 1.194 by root, Sat Dec 22 07:03:31 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) && !defined (__APPLE__) 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_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
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) && !defined (__APPLE__) 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
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
131#ifdef EV_H
132# include EV_H
133#else
134# include "ev.h"
135#endif
136
80#ifndef _WIN32 137#ifndef _WIN32
81# include <unistd.h>
82# include <sys/time.h> 138# include <sys/time.h>
83# include <sys/wait.h> 139# include <sys/wait.h>
140# include <unistd.h>
84#else 141#else
85# define WIN32_LEAN_AND_MEAN 142# define WIN32_LEAN_AND_MEAN
86# include <windows.h> 143# include <windows.h>
87# ifndef EV_SELECT_IS_WINSOCKET 144# ifndef EV_SELECT_IS_WINSOCKET
88# define EV_SELECT_IS_WINSOCKET 1 145# define EV_SELECT_IS_WINSOCKET 1
… …
90#endif 147#endif
91 148
92/**/ 149/**/
93 150
94#ifndef EV_USE_MONOTONIC 151#ifndef EV_USE_MONOTONIC
95# 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
96#endif 161#endif
97 162
98#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
99# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
101#endif 165#endif
102 166
103#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
104# ifdef _WIN32 168# ifdef _WIN32
105# define EV_USE_POLL 0 169# define EV_USE_POLL 0
… …
114 178
115#ifndef EV_USE_KQUEUE 179#ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE 0 180# define EV_USE_KQUEUE 0
117#endif 181#endif
118 182
119#ifndef EV_USE_REALTIME 183#ifndef EV_USE_PORT
120# define EV_USE_REALTIME 1 184# 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
121#endif 205#endif
122 206
123/**/ 207/**/
124 208
125#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
… …
130#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
131# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
132# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
133#endif 217#endif
134 218
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
135#if EV_SELECT_IS_WINSOCKET 234#if EV_SELECT_IS_WINSOCKET
136# include <winsock.h> 235# include <winsock.h>
137#endif 236#endif
138 237
139/**/ 238/**/
140 239
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
141#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) */
142#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) */
143#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
144/*#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 */
145 253
146#ifdef EV_H
147# include EV_H
148#else
149# include "ev.h"
150#endif
151
152#if __GNUC__ >= 3 254#if __GNUC__ >= 4
153# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
154# define inline inline 256# define noinline __attribute__ ((noinline))
155#else 257#else
156# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
157# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
158#endif 263#endif
159 264
160#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
161#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
162 274
163#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
164#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
165 277
166#define EMPTY /* required for microsofts broken pseudo-c compiler */ 278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
167 280
168typedef struct ev_watcher *W; 281typedef ev_watcher *W;
169typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
170typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
171 284
285/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */
172static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
173 288
174#ifdef _WIN32 289#ifdef _WIN32
175# include "ev_win32.c" 290# include "ev_win32.c"
176#endif 291#endif
177 292
178/*****************************************************************************/ 293/*****************************************************************************/
179 294
180static void (*syserr_cb)(const char *msg); 295static void (*syserr_cb)(const char *msg);
181 296
297void
182void ev_set_syserr_cb (void (*cb)(const char *msg)) 298ev_set_syserr_cb (void (*cb)(const char *msg))
183{ 299{
184 syserr_cb = cb; 300 syserr_cb = cb;
185} 301}
186 302
187static void 303static void noinline
188syserr (const char *msg) 304syserr (const char *msg)
189{ 305{
190 if (!msg) 306 if (!msg)
191 msg = "(libev) system error"; 307 msg = "(libev) system error";
192 308
… …
199 } 315 }
200} 316}
201 317
202static void *(*alloc)(void *ptr, long size); 318static void *(*alloc)(void *ptr, long size);
203 319
320void
204void ev_set_allocator (void *(*cb)(void *ptr, long size)) 321ev_set_allocator (void *(*cb)(void *ptr, long size))
205{ 322{
206 alloc = cb; 323 alloc = cb;
207} 324}
208 325
209static void * 326inline_speed void *
210ev_realloc (void *ptr, long size) 327ev_realloc (void *ptr, long size)
211{ 328{
212 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 329 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
213 330
214 if (!ptr && size) 331 if (!ptr && size)
… …
238typedef struct 355typedef struct
239{ 356{
240 W w; 357 W w;
241 int events; 358 int events;
242} ANPENDING; 359} ANPENDING;
360
361#if EV_USE_INOTIFY
362typedef struct
363{
364 WL head;
365} ANFS;
366#endif
243 367
244#if EV_MULTIPLICITY 368#if EV_MULTIPLICITY
245 369
246 struct ev_loop 370 struct ev_loop
247 { 371 {
… …
251 #include "ev_vars.h" 375 #include "ev_vars.h"
252 #undef VAR 376 #undef VAR
253 }; 377 };
254 #include "ev_wrap.h" 378 #include "ev_wrap.h"
255 379
256 struct ev_loop default_loop_struct; 380 static struct ev_loop default_loop_struct;
257 static struct ev_loop *default_loop; 381 struct ev_loop *ev_default_loop_ptr;
258 382
259#else 383#else
260 384
261 ev_tstamp ev_rt_now; 385 ev_tstamp ev_rt_now;
262 #define VAR(name,decl) static decl; 386 #define VAR(name,decl) static decl;
263 #include "ev_vars.h" 387 #include "ev_vars.h"
264 #undef VAR 388 #undef VAR
265 389
266 static int default_loop; 390 static int ev_default_loop_ptr;
267 391
268#endif 392#endif
269 393
270/*****************************************************************************/ 394/*****************************************************************************/
271 395
… …
281 gettimeofday (&tv, 0); 405 gettimeofday (&tv, 0);
282 return tv.tv_sec + tv.tv_usec * 1e-6; 406 return tv.tv_sec + tv.tv_usec * 1e-6;
283#endif 407#endif
284} 408}
285 409
286inline ev_tstamp 410ev_tstamp inline_size
287get_clock (void) 411get_clock (void)
288{ 412{
289#if EV_USE_MONOTONIC 413#if EV_USE_MONOTONIC
290 if (expect_true (have_monotonic)) 414 if (expect_true (have_monotonic))
291 { 415 {
… …
304{ 428{
305 return ev_rt_now; 429 return ev_rt_now;
306} 430}
307#endif 431#endif
308 432
309#define array_roundsize(type,n) ((n) | 4 & ~3) 433void
434ev_sleep (ev_tstamp delay)
435{
436 if (delay > 0.)
437 {
438#if EV_USE_NANOSLEEP
439 struct timespec ts;
440
441 ts.tv_sec = (time_t)delay;
442 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443
444 nanosleep (&ts, 0);
445#elif defined(_WIN32)
446 Sleep (delay * 1e3);
447#else
448 struct timeval tv;
449
450 tv.tv_sec = (time_t)delay;
451 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452
453 select (0, 0, 0, 0, &tv);
454#endif
455 }
456}
457
458/*****************************************************************************/
459
460int inline_size
461array_nextsize (int elem, int cur, int cnt)
462{
463 int ncur = cur + 1;
464
465 do
466 ncur <<= 1;
467 while (cnt > ncur);
468
469 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
470 if (elem * ncur > 4096)
471 {
472 ncur *= elem;
473 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
474 ncur = ncur - sizeof (void *) * 4;
475 ncur /= elem;
476 }
477
478 return ncur;
479}
480
481static noinline void *
482array_realloc (int elem, void *base, int *cur, int cnt)
483{
484 *cur = array_nextsize (elem, *cur, cnt);
485 return ev_realloc (base, elem * *cur);
486}
310 487
311#define array_needsize(type,base,cur,cnt,init) \ 488#define array_needsize(type,base,cur,cnt,init) \
312 if (expect_false ((cnt) > cur)) \ 489 if (expect_false ((cnt) > (cur))) \
313 { \ 490 { \
314 int newcnt = cur; \ 491 int ocur_ = (cur); \
315 do \ 492 (base) = (type *)array_realloc \
316 { \ 493 (sizeof (type), (base), &(cur), (cnt)); \
317 newcnt = array_roundsize (type, newcnt << 1); \ 494 init ((base) + (ocur_), (cur) - ocur_); \
318 } \
319 while ((cnt) > newcnt); \
320 \
321 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
322 init (base + cur, newcnt - cur); \
323 cur = newcnt; \
324 } 495 }
325 496
497#if 0
326#define array_slim(type,stem) \ 498#define array_slim(type,stem) \
327 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 499 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
328 { \ 500 { \
329 stem ## max = array_roundsize (stem ## cnt >> 1); \ 501 stem ## max = array_roundsize (stem ## cnt >> 1); \
330 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 502 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
331 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 503 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
332 } 504 }
505#endif
333 506
334#define array_free(stem, idx) \ 507#define array_free(stem, idx) \
335 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 508 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
336 509
337/*****************************************************************************/ 510/*****************************************************************************/
338 511
339static void 512void noinline
513ev_feed_event (EV_P_ void *w, int revents)
514{
515 W w_ = (W)w;
516 int pri = ABSPRI (w_);
517
518 if (expect_false (w_->pending))
519 pendings [pri][w_->pending - 1].events |= revents;
520 else
521 {
522 w_->pending = ++pendingcnt [pri];
523 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
524 pendings [pri][w_->pending - 1].w = w_;
525 pendings [pri][w_->pending - 1].events = revents;
526 }
527}
528
529void inline_speed
530queue_events (EV_P_ W *events, int eventcnt, int type)
531{
532 int i;
533
534 for (i = 0; i < eventcnt; ++i)
535 ev_feed_event (EV_A_ events [i], type);
536}
537
538/*****************************************************************************/
539
540void inline_size
340anfds_init (ANFD *base, int count) 541anfds_init (ANFD *base, int count)
341{ 542{
342 while (count--) 543 while (count--)
343 { 544 {
344 base->head = 0; 545 base->head = 0;
… …
347 548
348 ++base; 549 ++base;
349 } 550 }
350} 551}
351 552
352void 553void inline_speed
353ev_feed_event (EV_P_ void *w, int revents)
354{
355 W w_ = (W)w;
356
357 if (w_->pending)
358 {
359 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
360 return;
361 }
362
363 w_->pending = ++pendingcnt [ABSPRI (w_)];
364 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
365 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
366 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
367}
368
369static void
370queue_events (EV_P_ W *events, int eventcnt, int type)
371{
372 int i;
373
374 for (i = 0; i < eventcnt; ++i)
375 ev_feed_event (EV_A_ events [i], type);
376}
377
378inline void
379fd_event (EV_P_ int fd, int revents) 554fd_event (EV_P_ int fd, int revents)
380{ 555{
381 ANFD *anfd = anfds + fd; 556 ANFD *anfd = anfds + fd;
382 struct ev_io *w; 557 ev_io *w;
383 558
384 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 559 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
385 { 560 {
386 int ev = w->events & revents; 561 int ev = w->events & revents;
387 562
388 if (ev) 563 if (ev)
389 ev_feed_event (EV_A_ (W)w, ev); 564 ev_feed_event (EV_A_ (W)w, ev);
… …
391} 566}
392 567
393void 568void
394ev_feed_fd_event (EV_P_ int fd, int revents) 569ev_feed_fd_event (EV_P_ int fd, int revents)
395{ 570{
571 if (fd >= 0 && fd < anfdmax)
396 fd_event (EV_A_ fd, revents); 572 fd_event (EV_A_ fd, revents);
397} 573}
398 574
399/*****************************************************************************/ 575void inline_size
400
401static void
402fd_reify (EV_P) 576fd_reify (EV_P)
403{ 577{
404 int i; 578 int i;
405 579
406 for (i = 0; i < fdchangecnt; ++i) 580 for (i = 0; i < fdchangecnt; ++i)
407 { 581 {
408 int fd = fdchanges [i]; 582 int fd = fdchanges [i];
409 ANFD *anfd = anfds + fd; 583 ANFD *anfd = anfds + fd;
410 struct ev_io *w; 584 ev_io *w;
411 585
412 int events = 0; 586 unsigned char events = 0;
413 587
414 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 588 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
415 events |= w->events; 589 events |= (unsigned char)w->events;
416 590
417#if EV_SELECT_IS_WINSOCKET 591#if EV_SELECT_IS_WINSOCKET
418 if (events) 592 if (events)
419 { 593 {
420 unsigned long argp; 594 unsigned long argp;
421 anfd->handle = _get_osfhandle (fd); 595 anfd->handle = _get_osfhandle (fd);
422 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
423 } 597 }
424#endif 598#endif
425 599
600 {
601 unsigned char o_events = anfd->events;
602 unsigned char o_reify = anfd->reify;
603
426 anfd->reify = 0; 604 anfd->reify = 0;
427
428 method_modify (EV_A_ fd, anfd->events, events);
429 anfd->events = events; 605 anfd->events = events;
606
607 if (o_events != events || o_reify & EV_IOFDSET)
608 backend_modify (EV_A_ fd, o_events, events);
609 }
430 } 610 }
431 611
432 fdchangecnt = 0; 612 fdchangecnt = 0;
433} 613}
434 614
435static void 615void inline_size
436fd_change (EV_P_ int fd) 616fd_change (EV_P_ int fd, int flags)
437{ 617{
438 if (anfds [fd].reify) 618 unsigned char reify = anfds [fd].reify;
439 return;
440
441 anfds [fd].reify = 1; 619 anfds [fd].reify |= flags;
442 620
621 if (expect_true (!reify))
622 {
443 ++fdchangecnt; 623 ++fdchangecnt;
444 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 624 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
445 fdchanges [fdchangecnt - 1] = fd; 625 fdchanges [fdchangecnt - 1] = fd;
626 }
446} 627}
447 628
448static void 629void inline_speed
449fd_kill (EV_P_ int fd) 630fd_kill (EV_P_ int fd)
450{ 631{
451 struct ev_io *w; 632 ev_io *w;
452 633
453 while ((w = (struct ev_io *)anfds [fd].head)) 634 while ((w = (ev_io *)anfds [fd].head))
454 { 635 {
455 ev_io_stop (EV_A_ w); 636 ev_io_stop (EV_A_ w);
456 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 637 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
457 } 638 }
458} 639}
459 640
460static int 641int inline_size
461fd_valid (int fd) 642fd_valid (int fd)
462{ 643{
463#ifdef _WIN32 644#ifdef _WIN32
464 return _get_osfhandle (fd) != -1; 645 return _get_osfhandle (fd) != -1;
465#else 646#else
466 return fcntl (fd, F_GETFD) != -1; 647 return fcntl (fd, F_GETFD) != -1;
467#endif 648#endif
468} 649}
469 650
470/* called on EBADF to verify fds */ 651/* called on EBADF to verify fds */
471static void 652static void noinline
472fd_ebadf (EV_P) 653fd_ebadf (EV_P)
473{ 654{
474 int fd; 655 int fd;
475 656
476 for (fd = 0; fd < anfdmax; ++fd) 657 for (fd = 0; fd < anfdmax; ++fd)
… …
478 if (!fd_valid (fd) == -1 && errno == EBADF) 659 if (!fd_valid (fd) == -1 && errno == EBADF)
479 fd_kill (EV_A_ fd); 660 fd_kill (EV_A_ fd);
480} 661}
481 662
482/* called on ENOMEM in select/poll to kill some fds and retry */ 663/* called on ENOMEM in select/poll to kill some fds and retry */
483static void 664static void noinline
484fd_enomem (EV_P) 665fd_enomem (EV_P)
485{ 666{
486 int fd; 667 int fd;
487 668
488 for (fd = anfdmax; fd--; ) 669 for (fd = anfdmax; fd--; )
… …
491 fd_kill (EV_A_ fd); 672 fd_kill (EV_A_ fd);
492 return; 673 return;
493 } 674 }
494} 675}
495 676
496/* usually called after fork if method needs to re-arm all fds from scratch */ 677/* usually called after fork if backend needs to re-arm all fds from scratch */
497static void 678static void noinline
498fd_rearm_all (EV_P) 679fd_rearm_all (EV_P)
499{ 680{
500 int fd; 681 int fd;
501 682
502 /* this should be highly optimised to not do anything but set a flag */
503 for (fd = 0; fd < anfdmax; ++fd) 683 for (fd = 0; fd < anfdmax; ++fd)
504 if (anfds [fd].events) 684 if (anfds [fd].events)
505 { 685 {
506 anfds [fd].events = 0; 686 anfds [fd].events = 0;
507 fd_change (EV_A_ fd); 687 fd_change (EV_A_ fd, EV_IOFDSET | 1);
508 } 688 }
509} 689}
510 690
511/*****************************************************************************/ 691/*****************************************************************************/
512 692
513static void 693void inline_speed
514upheap (WT *heap, int k) 694upheap (WT *heap, int k)
515{ 695{
516 WT w = heap [k]; 696 WT w = heap [k];
517 697
518 while (k && heap [k >> 1]->at > w->at) 698 while (k)
519 { 699 {
700 int p = (k - 1) >> 1;
701
702 if (heap [p]->at <= w->at)
703 break;
704
520 heap [k] = heap [k >> 1]; 705 heap [k] = heap [p];
521 ((W)heap [k])->active = k + 1; 706 ((W)heap [k])->active = k + 1;
522 k >>= 1; 707 k = p;
523 } 708 }
524 709
525 heap [k] = w; 710 heap [k] = w;
526 ((W)heap [k])->active = k + 1; 711 ((W)heap [k])->active = k + 1;
527
528} 712}
529 713
530static void 714void inline_speed
531downheap (WT *heap, int N, int k) 715downheap (WT *heap, int N, int k)
532{ 716{
533 WT w = heap [k]; 717 WT w = heap [k];
534 718
535 while (k < (N >> 1)) 719 for (;;)
536 { 720 {
537 int j = k << 1; 721 int c = (k << 1) + 1;
538 722
539 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 723 if (c >= N)
540 ++j;
541
542 if (w->at <= heap [j]->at)
543 break; 724 break;
544 725
726 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
727 ? 1 : 0;
728
729 if (w->at <= heap [c]->at)
730 break;
731
545 heap [k] = heap [j]; 732 heap [k] = heap [c];
546 ((W)heap [k])->active = k + 1; 733 ((W)heap [k])->active = k + 1;
734
547 k = j; 735 k = c;
548 } 736 }
549 737
550 heap [k] = w; 738 heap [k] = w;
551 ((W)heap [k])->active = k + 1; 739 ((W)heap [k])->active = k + 1;
552} 740}
553 741
554inline void 742void inline_size
555adjustheap (WT *heap, int N, int k) 743adjustheap (WT *heap, int N, int k)
556{ 744{
557 upheap (heap, k); 745 upheap (heap, k);
558 downheap (heap, N, k); 746 downheap (heap, N, k);
559} 747}
… …
569static ANSIG *signals; 757static ANSIG *signals;
570static int signalmax; 758static int signalmax;
571 759
572static int sigpipe [2]; 760static int sigpipe [2];
573static sig_atomic_t volatile gotsig; 761static sig_atomic_t volatile gotsig;
574static struct ev_io sigev; 762static ev_io sigev;
575 763
576static void 764void inline_size
577signals_init (ANSIG *base, int count) 765signals_init (ANSIG *base, int count)
578{ 766{
579 while (count--) 767 while (count--)
580 { 768 {
581 base->head = 0; 769 base->head = 0;
… …
601 write (sigpipe [1], &signum, 1); 789 write (sigpipe [1], &signum, 1);
602 errno = old_errno; 790 errno = old_errno;
603 } 791 }
604} 792}
605 793
606void 794void noinline
607ev_feed_signal_event (EV_P_ int signum) 795ev_feed_signal_event (EV_P_ int signum)
608{ 796{
609 WL w; 797 WL w;
610 798
611#if EV_MULTIPLICITY 799#if EV_MULTIPLICITY
612 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 800 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
613#endif 801#endif
614 802
615 --signum; 803 --signum;
616 804
617 if (signum < 0 || signum >= signalmax) 805 if (signum < 0 || signum >= signalmax)
… …
622 for (w = signals [signum].head; w; w = w->next) 810 for (w = signals [signum].head; w; w = w->next)
623 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 811 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
624} 812}
625 813
626static void 814static void
627sigcb (EV_P_ struct ev_io *iow, int revents) 815sigcb (EV_P_ ev_io *iow, int revents)
628{ 816{
629 int signum; 817 int signum;
630 818
631 read (sigpipe [0], &revents, 1); 819 read (sigpipe [0], &revents, 1);
632 gotsig = 0; 820 gotsig = 0;
… …
634 for (signum = signalmax; signum--; ) 822 for (signum = signalmax; signum--; )
635 if (signals [signum].gotsig) 823 if (signals [signum].gotsig)
636 ev_feed_signal_event (EV_A_ signum + 1); 824 ev_feed_signal_event (EV_A_ signum + 1);
637} 825}
638 826
639inline void 827void inline_speed
640fd_intern (int fd) 828fd_intern (int fd)
641{ 829{
642#ifdef _WIN32 830#ifdef _WIN32
643 int arg = 1; 831 int arg = 1;
644 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
646 fcntl (fd, F_SETFD, FD_CLOEXEC); 834 fcntl (fd, F_SETFD, FD_CLOEXEC);
647 fcntl (fd, F_SETFL, O_NONBLOCK); 835 fcntl (fd, F_SETFL, O_NONBLOCK);
648#endif 836#endif
649} 837}
650 838
651static void 839static void noinline
652siginit (EV_P) 840siginit (EV_P)
653{ 841{
654 fd_intern (sigpipe [0]); 842 fd_intern (sigpipe [0]);
655 fd_intern (sigpipe [1]); 843 fd_intern (sigpipe [1]);
656 844
… …
659 ev_unref (EV_A); /* child watcher should not keep loop alive */ 847 ev_unref (EV_A); /* child watcher should not keep loop alive */
660} 848}
661 849
662/*****************************************************************************/ 850/*****************************************************************************/
663 851
664static struct ev_child *childs [PID_HASHSIZE]; 852static WL childs [EV_PID_HASHSIZE];
665 853
666#ifndef _WIN32 854#ifndef _WIN32
667 855
668static struct ev_signal childev; 856static ev_signal childev;
857
858void inline_speed
859child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
860{
861 ev_child *w;
862
863 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
864 if (w->pid == pid || !w->pid)
865 {
866 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
867 w->rpid = pid;
868 w->rstatus = status;
869 ev_feed_event (EV_A_ (W)w, EV_CHILD);
870 }
871}
669 872
670#ifndef WCONTINUED 873#ifndef WCONTINUED
671# define WCONTINUED 0 874# define WCONTINUED 0
672#endif 875#endif
673 876
674static void 877static void
675child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
676{
677 struct ev_child *w;
678
679 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
680 if (w->pid == pid || !w->pid)
681 {
682 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
683 w->rpid = pid;
684 w->rstatus = status;
685 ev_feed_event (EV_A_ (W)w, EV_CHILD);
686 }
687}
688
689static void
690childcb (EV_P_ struct ev_signal *sw, int revents) 878childcb (EV_P_ ev_signal *sw, int revents)
691{ 879{
692 int pid, status; 880 int pid, status;
693 881
882 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
694 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 883 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
695 { 884 if (!WCONTINUED
885 || errno != EINVAL
886 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887 return;
888
696 /* make sure we are called again until all childs have been reaped */ 889 /* make sure we are called again until all childs have been reaped */
890 /* we need to do it this way so that the callback gets called before we continue */
697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 891 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
698 892
699 child_reap (EV_A_ sw, pid, pid, status); 893 child_reap (EV_A_ sw, pid, pid, status);
894 if (EV_PID_HASHSIZE > 1)
700 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 895 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
701 }
702} 896}
703 897
704#endif 898#endif
705 899
706/*****************************************************************************/ 900/*****************************************************************************/
707 901
902#if EV_USE_PORT
903# include "ev_port.c"
904#endif
708#if EV_USE_KQUEUE 905#if EV_USE_KQUEUE
709# include "ev_kqueue.c" 906# include "ev_kqueue.c"
710#endif 907#endif
711#if EV_USE_EPOLL 908#if EV_USE_EPOLL
712# include "ev_epoll.c" 909# include "ev_epoll.c"
… …
729{ 926{
730 return EV_VERSION_MINOR; 927 return EV_VERSION_MINOR;
731} 928}
732 929
733/* return true if we are running with elevated privileges and should ignore env variables */ 930/* return true if we are running with elevated privileges and should ignore env variables */
734static int 931int inline_size
735enable_secure (void) 932enable_secure (void)
736{ 933{
737#ifdef _WIN32 934#ifdef _WIN32
738 return 0; 935 return 0;
739#else 936#else
740 return getuid () != geteuid () 937 return getuid () != geteuid ()
741 || getgid () != getegid (); 938 || getgid () != getegid ();
742#endif 939#endif
743} 940}
744 941
745int 942unsigned int
746ev_method (EV_P) 943ev_supported_backends (void)
747{ 944{
748 return method; 945 unsigned int flags = 0;
749}
750 946
751static void 947 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
752loop_init (EV_P_ int methods) 948 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
949 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
950 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
951 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
952
953 return flags;
954}
955
956unsigned int
957ev_recommended_backends (void)
753{ 958{
754 if (!method) 959 unsigned int flags = ev_supported_backends ();
960
961#ifndef __NetBSD__
962 /* kqueue is borked on everything but netbsd apparently */
963 /* it usually doesn't work correctly on anything but sockets and pipes */
964 flags &= ~EVBACKEND_KQUEUE;
965#endif
966#ifdef __APPLE__
967 // flags &= ~EVBACKEND_KQUEUE; for documentation
968 flags &= ~EVBACKEND_POLL;
969#endif
970
971 return flags;
972}
973
974unsigned int
975ev_embeddable_backends (void)
976{
977 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
978 return EVBACKEND_KQUEUE
979 | EVBACKEND_PORT;
980}
981
982unsigned int
983ev_backend (EV_P)
984{
985 return backend;
986}
987
988unsigned int
989ev_loop_count (EV_P)
990{
991 return loop_count;
992}
993
994void
995ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
996{
997 io_blocktime = interval;
998}
999
1000void
1001ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 timeout_blocktime = interval;
1004}
1005
1006static void noinline
1007loop_init (EV_P_ unsigned int flags)
1008{
1009 if (!backend)
755 { 1010 {
756#if EV_USE_MONOTONIC 1011#if EV_USE_MONOTONIC
757 { 1012 {
758 struct timespec ts; 1013 struct timespec ts;
759 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1014 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
764 ev_rt_now = ev_time (); 1019 ev_rt_now = ev_time ();
765 mn_now = get_clock (); 1020 mn_now = get_clock ();
766 now_floor = mn_now; 1021 now_floor = mn_now;
767 rtmn_diff = ev_rt_now - mn_now; 1022 rtmn_diff = ev_rt_now - mn_now;
768 1023
769 if (methods == EVMETHOD_AUTO) 1024 io_blocktime = 0.;
770 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1025 timeout_blocktime = 0.;
1026
1027 /* pid check not overridable via env */
1028#ifndef _WIN32
1029 if (flags & EVFLAG_FORKCHECK)
1030 curpid = getpid ();
1031#endif
1032
1033 if (!(flags & EVFLAG_NOENV)
1034 && !enable_secure ()
1035 && getenv ("LIBEV_FLAGS"))
771 methods = atoi (getenv ("LIBEV_METHODS")); 1036 flags = atoi (getenv ("LIBEV_FLAGS"));
772 else
773 methods = EVMETHOD_ANY;
774 1037
775 method = 0; 1038 if (!(flags & 0x0000ffffUL))
1039 flags |= ev_recommended_backends ();
1040
1041 backend = 0;
1042 backend_fd = -1;
1043#if EV_USE_INOTIFY
1044 fs_fd = -2;
1045#endif
1046
1047#if EV_USE_PORT
1048 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1049#endif
776#if EV_USE_KQUEUE 1050#if EV_USE_KQUEUE
777 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1051 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
778#endif 1052#endif
779#if EV_USE_EPOLL 1053#if EV_USE_EPOLL
780 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1054 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
781#endif 1055#endif
782#if EV_USE_POLL 1056#if EV_USE_POLL
783 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1057 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
784#endif 1058#endif
785#if EV_USE_SELECT 1059#if EV_USE_SELECT
786 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1060 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
787#endif 1061#endif
788 1062
789 ev_init (&sigev, sigcb); 1063 ev_init (&sigev, sigcb);
790 ev_set_priority (&sigev, EV_MAXPRI); 1064 ev_set_priority (&sigev, EV_MAXPRI);
791 } 1065 }
792} 1066}
793 1067
794void 1068static void noinline
795loop_destroy (EV_P) 1069loop_destroy (EV_P)
796{ 1070{
797 int i; 1071 int i;
798 1072
1073#if EV_USE_INOTIFY
1074 if (fs_fd >= 0)
1075 close (fs_fd);
1076#endif
1077
1078 if (backend_fd >= 0)
1079 close (backend_fd);
1080
1081#if EV_USE_PORT
1082 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1083#endif
799#if EV_USE_KQUEUE 1084#if EV_USE_KQUEUE
800 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1085 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
801#endif 1086#endif
802#if EV_USE_EPOLL 1087#if EV_USE_EPOLL
803 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1088 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
804#endif 1089#endif
805#if EV_USE_POLL 1090#if EV_USE_POLL
806 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1091 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
807#endif 1092#endif
808#if EV_USE_SELECT 1093#if EV_USE_SELECT
809 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1094 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
810#endif 1095#endif
811 1096
812 for (i = NUMPRI; i--; ) 1097 for (i = NUMPRI; i--; )
1098 {
813 array_free (pending, [i]); 1099 array_free (pending, [i]);
1100#if EV_IDLE_ENABLE
1101 array_free (idle, [i]);
1102#endif
1103 }
1104
1105 ev_free (anfds); anfdmax = 0;
814 1106
815 /* have to use the microsoft-never-gets-it-right macro */ 1107 /* have to use the microsoft-never-gets-it-right macro */
816 array_free (fdchange, EMPTY); 1108 array_free (fdchange, EMPTY);
817 array_free (timer, EMPTY); 1109 array_free (timer, EMPTY);
818#if EV_PERIODICS 1110#if EV_PERIODIC_ENABLE
819 array_free (periodic, EMPTY); 1111 array_free (periodic, EMPTY);
820#endif 1112#endif
1113#if EV_FORK_ENABLE
821 array_free (idle, EMPTY); 1114 array_free (fork, EMPTY);
1115#endif
822 array_free (prepare, EMPTY); 1116 array_free (prepare, EMPTY);
823 array_free (check, EMPTY); 1117 array_free (check, EMPTY);
824 1118
825 method = 0; 1119 backend = 0;
826} 1120}
827 1121
828static void 1122void inline_size infy_fork (EV_P);
1123
1124void inline_size
829loop_fork (EV_P) 1125loop_fork (EV_P)
830{ 1126{
1127#if EV_USE_PORT
1128 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1129#endif
1130#if EV_USE_KQUEUE
1131 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1132#endif
831#if EV_USE_EPOLL 1133#if EV_USE_EPOLL
832 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1134 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
833#endif 1135#endif
834#if EV_USE_KQUEUE 1136#if EV_USE_INOTIFY
835 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1137 infy_fork (EV_A);
836#endif 1138#endif
837 1139
838 if (ev_is_active (&sigev)) 1140 if (ev_is_active (&sigev))
839 { 1141 {
840 /* default loop */ 1142 /* default loop */
… …
853 postfork = 0; 1155 postfork = 0;
854} 1156}
855 1157
856#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
857struct ev_loop * 1159struct ev_loop *
858ev_loop_new (int methods) 1160ev_loop_new (unsigned int flags)
859{ 1161{
860 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1162 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
861 1163
862 memset (loop, 0, sizeof (struct ev_loop)); 1164 memset (loop, 0, sizeof (struct ev_loop));
863 1165
864 loop_init (EV_A_ methods); 1166 loop_init (EV_A_ flags);
865 1167
866 if (ev_method (EV_A)) 1168 if (ev_backend (EV_A))
867 return loop; 1169 return loop;
868 1170
869 return 0; 1171 return 0;
870} 1172}
871 1173
… …
884 1186
885#endif 1187#endif
886 1188
887#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
888struct ev_loop * 1190struct ev_loop *
1191ev_default_loop_init (unsigned int flags)
889#else 1192#else
890int 1193int
1194ev_default_loop (unsigned int flags)
891#endif 1195#endif
892ev_default_loop (int methods)
893{ 1196{
894 if (sigpipe [0] == sigpipe [1]) 1197 if (sigpipe [0] == sigpipe [1])
895 if (pipe (sigpipe)) 1198 if (pipe (sigpipe))
896 return 0; 1199 return 0;
897 1200
898 if (!default_loop) 1201 if (!ev_default_loop_ptr)
899 { 1202 {
900#if EV_MULTIPLICITY 1203#if EV_MULTIPLICITY
901 struct ev_loop *loop = default_loop = &default_loop_struct; 1204 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
902#else 1205#else
903 default_loop = 1; 1206 ev_default_loop_ptr = 1;
904#endif 1207#endif
905 1208
906 loop_init (EV_A_ methods); 1209 loop_init (EV_A_ flags);
907 1210
908 if (ev_method (EV_A)) 1211 if (ev_backend (EV_A))
909 { 1212 {
910 siginit (EV_A); 1213 siginit (EV_A);
911 1214
912#ifndef _WIN32 1215#ifndef _WIN32
913 ev_signal_init (&childev, childcb, SIGCHLD); 1216 ev_signal_init (&childev, childcb, SIGCHLD);
… …
915 ev_signal_start (EV_A_ &childev); 1218 ev_signal_start (EV_A_ &childev);
916 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1219 ev_unref (EV_A); /* child watcher should not keep loop alive */
917#endif 1220#endif
918 } 1221 }
919 else 1222 else
920 default_loop = 0; 1223 ev_default_loop_ptr = 0;
921 } 1224 }
922 1225
923 return default_loop; 1226 return ev_default_loop_ptr;
924} 1227}
925 1228
926void 1229void
927ev_default_destroy (void) 1230ev_default_destroy (void)
928{ 1231{
929#if EV_MULTIPLICITY 1232#if EV_MULTIPLICITY
930 struct ev_loop *loop = default_loop; 1233 struct ev_loop *loop = ev_default_loop_ptr;
931#endif 1234#endif
932 1235
933#ifndef _WIN32 1236#ifndef _WIN32
934 ev_ref (EV_A); /* child watcher */ 1237 ev_ref (EV_A); /* child watcher */
935 ev_signal_stop (EV_A_ &childev); 1238 ev_signal_stop (EV_A_ &childev);
… …
946 1249
947void 1250void
948ev_default_fork (void) 1251ev_default_fork (void)
949{ 1252{
950#if EV_MULTIPLICITY 1253#if EV_MULTIPLICITY
951 struct ev_loop *loop = default_loop; 1254 struct ev_loop *loop = ev_default_loop_ptr;
952#endif 1255#endif
953 1256
954 if (method) 1257 if (backend)
955 postfork = 1; 1258 postfork = 1;
956} 1259}
957 1260
958/*****************************************************************************/ 1261/*****************************************************************************/
959 1262
960static int 1263void
961any_pending (EV_P) 1264ev_invoke (EV_P_ void *w, int revents)
962{ 1265{
963 int pri; 1266 EV_CB_INVOKE ((W)w, revents);
964
965 for (pri = NUMPRI; pri--; )
966 if (pendingcnt [pri])
967 return 1;
968
969 return 0;
970} 1267}
971 1268
972static void 1269void inline_speed
973call_pending (EV_P) 1270call_pending (EV_P)
974{ 1271{
975 int pri; 1272 int pri;
976 1273
977 for (pri = NUMPRI; pri--; ) 1274 for (pri = NUMPRI; pri--; )
978 while (pendingcnt [pri]) 1275 while (pendingcnt [pri])
979 { 1276 {
980 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1277 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
981 1278
982 if (p->w) 1279 if (expect_true (p->w))
983 { 1280 {
1281 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1282
984 p->w->pending = 0; 1283 p->w->pending = 0;
985 EV_CB_INVOKE (p->w, p->events); 1284 EV_CB_INVOKE (p->w, p->events);
986 } 1285 }
987 } 1286 }
988} 1287}
989 1288
990static void 1289void inline_size
991timers_reify (EV_P) 1290timers_reify (EV_P)
992{ 1291{
993 while (timercnt && ((WT)timers [0])->at <= mn_now) 1292 while (timercnt && ((WT)timers [0])->at <= mn_now)
994 { 1293 {
995 struct ev_timer *w = timers [0]; 1294 ev_timer *w = (ev_timer *)timers [0];
996 1295
997 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1296 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
998 1297
999 /* first reschedule or stop timer */ 1298 /* first reschedule or stop timer */
1000 if (w->repeat) 1299 if (w->repeat)
1001 { 1300 {
1002 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1301 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1003 1302
1004 ((WT)w)->at += w->repeat; 1303 ((WT)w)->at += w->repeat;
1005 if (((WT)w)->at < mn_now) 1304 if (((WT)w)->at < mn_now)
1006 ((WT)w)->at = mn_now; 1305 ((WT)w)->at = mn_now;
1007 1306
1008 downheap ((WT *)timers, timercnt, 0); 1307 downheap (timers, timercnt, 0);
1009 } 1308 }
1010 else 1309 else
1011 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1310 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1012 1311
1013 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1312 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1014 } 1313 }
1015} 1314}
1016 1315
1017#if EV_PERIODICS 1316#if EV_PERIODIC_ENABLE
1018static void 1317void inline_size
1019periodics_reify (EV_P) 1318periodics_reify (EV_P)
1020{ 1319{
1021 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1320 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1022 { 1321 {
1023 struct ev_periodic *w = periodics [0]; 1322 ev_periodic *w = (ev_periodic *)periodics [0];
1024 1323
1025 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1324 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1026 1325
1027 /* first reschedule or stop timer */ 1326 /* first reschedule or stop timer */
1028 if (w->reschedule_cb) 1327 if (w->reschedule_cb)
1029 { 1328 {
1030 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1329 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1031
1032 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1330 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1033 downheap ((WT *)periodics, periodiccnt, 0); 1331 downheap (periodics, periodiccnt, 0);
1034 } 1332 }
1035 else if (w->interval) 1333 else if (w->interval)
1036 { 1334 {
1037 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1335 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1336 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1038 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1337 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1039 downheap ((WT *)periodics, periodiccnt, 0); 1338 downheap (periodics, periodiccnt, 0);
1040 } 1339 }
1041 else 1340 else
1042 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1341 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1043 1342
1044 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1343 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1045 } 1344 }
1046} 1345}
1047 1346
1048static void 1347static void noinline
1049periodics_reschedule (EV_P) 1348periodics_reschedule (EV_P)
1050{ 1349{
1051 int i; 1350 int i;
1052 1351
1053 /* adjust periodics after time jump */ 1352 /* adjust periodics after time jump */
1054 for (i = 0; i < periodiccnt; ++i) 1353 for (i = 0; i < periodiccnt; ++i)
1055 { 1354 {
1056 struct ev_periodic *w = periodics [i]; 1355 ev_periodic *w = (ev_periodic *)periodics [i];
1057 1356
1058 if (w->reschedule_cb) 1357 if (w->reschedule_cb)
1059 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1358 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1060 else if (w->interval) 1359 else if (w->interval)
1061 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1360 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1062 } 1361 }
1063 1362
1064 /* now rebuild the heap */ 1363 /* now rebuild the heap */
1065 for (i = periodiccnt >> 1; i--; ) 1364 for (i = periodiccnt >> 1; i--; )
1066 downheap ((WT *)periodics, periodiccnt, i); 1365 downheap (periodics, periodiccnt, i);
1067} 1366}
1068#endif 1367#endif
1069 1368
1070inline int 1369#if EV_IDLE_ENABLE
1071time_update_monotonic (EV_P) 1370void inline_size
1371idle_reify (EV_P)
1072{ 1372{
1373 if (expect_false (idleall))
1374 {
1375 int pri;
1376
1377 for (pri = NUMPRI; pri--; )
1378 {
1379 if (pendingcnt [pri])
1380 break;
1381
1382 if (idlecnt [pri])
1383 {
1384 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1385 break;
1386 }
1387 }
1388 }
1389}
1390#endif
1391
1392void inline_speed
1393time_update (EV_P_ ev_tstamp max_block)
1394{
1395 int i;
1396
1397#if EV_USE_MONOTONIC
1398 if (expect_true (have_monotonic))
1399 {
1400 ev_tstamp odiff = rtmn_diff;
1401
1073 mn_now = get_clock (); 1402 mn_now = get_clock ();
1074 1403
1404 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1405 /* interpolate in the meantime */
1075 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1406 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1076 { 1407 {
1077 ev_rt_now = rtmn_diff + mn_now; 1408 ev_rt_now = rtmn_diff + mn_now;
1078 return 0; 1409 return;
1079 } 1410 }
1080 else 1411
1081 {
1082 now_floor = mn_now; 1412 now_floor = mn_now;
1083 ev_rt_now = ev_time (); 1413 ev_rt_now = ev_time ();
1084 return 1;
1085 }
1086}
1087 1414
1088static void 1415 /* loop a few times, before making important decisions.
1089time_update (EV_P) 1416 * on the choice of "4": one iteration isn't enough,
1090{ 1417 * in case we get preempted during the calls to
1091 int i; 1418 * ev_time and get_clock. a second call is almost guaranteed
1092 1419 * to succeed in that case, though. and looping a few more times
1093#if EV_USE_MONOTONIC 1420 * doesn't hurt either as we only do this on time-jumps or
1094 if (expect_true (have_monotonic)) 1421 * in the unlikely event of having been preempted here.
1095 { 1422 */
1096 if (time_update_monotonic (EV_A)) 1423 for (i = 4; --i; )
1097 { 1424 {
1098 ev_tstamp odiff = rtmn_diff;
1099
1100 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1101 {
1102 rtmn_diff = ev_rt_now - mn_now; 1425 rtmn_diff = ev_rt_now - mn_now;
1103 1426
1104 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1427 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1105 return; /* all is well */ 1428 return; /* all is well */
1106 1429
1107 ev_rt_now = ev_time (); 1430 ev_rt_now = ev_time ();
1108 mn_now = get_clock (); 1431 mn_now = get_clock ();
1109 now_floor = mn_now; 1432 now_floor = mn_now;
1110 } 1433 }
1111 1434
1112# if EV_PERIODICS 1435# if EV_PERIODIC_ENABLE
1436 periodics_reschedule (EV_A);
1437# endif
1438 /* no timer adjustment, as the monotonic clock doesn't jump */
1439 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1440 }
1441 else
1442#endif
1443 {
1444 ev_rt_now = ev_time ();
1445
1446 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1447 {
1448#if EV_PERIODIC_ENABLE
1113 periodics_reschedule (EV_A); 1449 periodics_reschedule (EV_A);
1114# endif 1450#endif
1115 /* no timer adjustment, as the monotonic clock doesn't jump */
1116 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1117 }
1118 }
1119 else
1120#endif
1121 {
1122 ev_rt_now = ev_time ();
1123
1124 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1125 {
1126#if EV_PERIODICS
1127 periodics_reschedule (EV_A);
1128#endif
1129
1130 /* adjust timers. this is easy, as the offset is the same for all */ 1451 /* adjust timers. this is easy, as the offset is the same for all of them */
1131 for (i = 0; i < timercnt; ++i) 1452 for (i = 0; i < timercnt; ++i)
1132 ((WT)timers [i])->at += ev_rt_now - mn_now; 1453 ((WT)timers [i])->at += ev_rt_now - mn_now;
1133 } 1454 }
1134 1455
1135 mn_now = ev_rt_now; 1456 mn_now = ev_rt_now;
… …
1151static int loop_done; 1472static int loop_done;
1152 1473
1153void 1474void
1154ev_loop (EV_P_ int flags) 1475ev_loop (EV_P_ int flags)
1155{ 1476{
1156 double block;
1157 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1477 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1478 ? EVUNLOOP_ONE
1479 : EVUNLOOP_CANCEL;
1480
1481 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1158 1482
1159 do 1483 do
1160 { 1484 {
1485#ifndef _WIN32
1486 if (expect_false (curpid)) /* penalise the forking check even more */
1487 if (expect_false (getpid () != curpid))
1488 {
1489 curpid = getpid ();
1490 postfork = 1;
1491 }
1492#endif
1493
1494#if EV_FORK_ENABLE
1495 /* we might have forked, so queue fork handlers */
1496 if (expect_false (postfork))
1497 if (forkcnt)
1498 {
1499 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1500 call_pending (EV_A);
1501 }
1502#endif
1503
1161 /* queue check watchers (and execute them) */ 1504 /* queue prepare watchers (and execute them) */
1162 if (expect_false (preparecnt)) 1505 if (expect_false (preparecnt))
1163 { 1506 {
1164 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1507 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1165 call_pending (EV_A); 1508 call_pending (EV_A);
1166 } 1509 }
1167 1510
1511 if (expect_false (!activecnt))
1512 break;
1513
1168 /* we might have forked, so reify kernel state if necessary */ 1514 /* we might have forked, so reify kernel state if necessary */
1169 if (expect_false (postfork)) 1515 if (expect_false (postfork))
1170 loop_fork (EV_A); 1516 loop_fork (EV_A);
1171 1517
1172 /* update fd-related kernel structures */ 1518 /* update fd-related kernel structures */
1173 fd_reify (EV_A); 1519 fd_reify (EV_A);
1174 1520
1175 /* calculate blocking time */ 1521 /* calculate blocking time */
1522 {
1523 ev_tstamp waittime = 0.;
1524 ev_tstamp sleeptime = 0.;
1176 1525
1177 /* we only need this for !monotonic clock or timers, but as we basically 1526 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1178 always have timers, we just calculate it always */
1179#if EV_USE_MONOTONIC
1180 if (expect_true (have_monotonic))
1181 time_update_monotonic (EV_A);
1182 else
1183#endif
1184 { 1527 {
1185 ev_rt_now = ev_time (); 1528 /* update time to cancel out callback processing overhead */
1186 mn_now = ev_rt_now; 1529 time_update (EV_A_ 1e100);
1187 }
1188 1530
1189 if (flags & EVLOOP_NONBLOCK || idlecnt)
1190 block = 0.;
1191 else
1192 {
1193 block = MAX_BLOCKTIME; 1531 waittime = MAX_BLOCKTIME;
1194 1532
1195 if (timercnt) 1533 if (timercnt)
1196 { 1534 {
1197 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1535 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1198 if (block > to) block = to; 1536 if (waittime > to) waittime = to;
1199 } 1537 }
1200 1538
1201#if EV_PERIODICS 1539#if EV_PERIODIC_ENABLE
1202 if (periodiccnt) 1540 if (periodiccnt)
1203 { 1541 {
1204 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1542 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1205 if (block > to) block = to; 1543 if (waittime > to) waittime = to;
1206 } 1544 }
1207#endif 1545#endif
1208 1546
1209 if (block < 0.) block = 0.; 1547 if (expect_false (waittime < timeout_blocktime))
1548 waittime = timeout_blocktime;
1549
1550 sleeptime = waittime - backend_fudge;
1551
1552 if (expect_true (sleeptime > io_blocktime))
1553 sleeptime = io_blocktime;
1554
1555 if (sleeptime)
1556 {
1557 ev_sleep (sleeptime);
1558 waittime -= sleeptime;
1559 }
1210 } 1560 }
1211 1561
1212 method_poll (EV_A_ block); 1562 ++loop_count;
1563 backend_poll (EV_A_ waittime);
1213 1564
1214 /* update ev_rt_now, do magic */ 1565 /* update ev_rt_now, do magic */
1215 time_update (EV_A); 1566 time_update (EV_A_ waittime + sleeptime);
1567 }
1216 1568
1217 /* queue pending timers and reschedule them */ 1569 /* queue pending timers and reschedule them */
1218 timers_reify (EV_A); /* relative timers called last */ 1570 timers_reify (EV_A); /* relative timers called last */
1219#if EV_PERIODICS 1571#if EV_PERIODIC_ENABLE
1220 periodics_reify (EV_A); /* absolute timers called first */ 1572 periodics_reify (EV_A); /* absolute timers called first */
1221#endif 1573#endif
1222 1574
1575#if EV_IDLE_ENABLE
1223 /* queue idle watchers unless io or timers are pending */ 1576 /* queue idle watchers unless other events are pending */
1224 if (idlecnt && !any_pending (EV_A)) 1577 idle_reify (EV_A);
1225 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1578#endif
1226 1579
1227 /* queue check watchers, to be executed first */ 1580 /* queue check watchers, to be executed first */
1228 if (checkcnt) 1581 if (expect_false (checkcnt))
1229 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1582 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1230 1583
1231 call_pending (EV_A); 1584 call_pending (EV_A);
1585
1232 } 1586 }
1233 while (activecnt && !loop_done); 1587 while (expect_true (activecnt && !loop_done));
1234 1588
1235 if (loop_done != 2) 1589 if (loop_done == EVUNLOOP_ONE)
1236 loop_done = 0; 1590 loop_done = EVUNLOOP_CANCEL;
1237} 1591}
1238 1592
1239void 1593void
1240ev_unloop (EV_P_ int how) 1594ev_unloop (EV_P_ int how)
1241{ 1595{
1242 loop_done = how; 1596 loop_done = how;
1243} 1597}
1244 1598
1245/*****************************************************************************/ 1599/*****************************************************************************/
1246 1600
1247inline void 1601void inline_size
1248wlist_add (WL *head, WL elem) 1602wlist_add (WL *head, WL elem)
1249{ 1603{
1250 elem->next = *head; 1604 elem->next = *head;
1251 *head = elem; 1605 *head = elem;
1252} 1606}
1253 1607
1254inline void 1608void inline_size
1255wlist_del (WL *head, WL elem) 1609wlist_del (WL *head, WL elem)
1256{ 1610{
1257 while (*head) 1611 while (*head)
1258 { 1612 {
1259 if (*head == elem) 1613 if (*head == elem)
… …
1264 1618
1265 head = &(*head)->next; 1619 head = &(*head)->next;
1266 } 1620 }
1267} 1621}
1268 1622
1269inline void 1623void inline_speed
1270ev_clear_pending (EV_P_ W w) 1624clear_pending (EV_P_ W w)
1271{ 1625{
1272 if (w->pending) 1626 if (w->pending)
1273 { 1627 {
1274 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1628 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1275 w->pending = 0; 1629 w->pending = 0;
1276 } 1630 }
1277} 1631}
1278 1632
1279inline void 1633int
1634ev_clear_pending (EV_P_ void *w)
1635{
1636 W w_ = (W)w;
1637 int pending = w_->pending;
1638
1639 if (expect_true (pending))
1640 {
1641 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1642 w_->pending = 0;
1643 p->w = 0;
1644 return p->events;
1645 }
1646 else
1647 return 0;
1648}
1649
1650void inline_size
1651pri_adjust (EV_P_ W w)
1652{
1653 int pri = w->priority;
1654 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1655 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1656 w->priority = pri;
1657}
1658
1659void inline_speed
1280ev_start (EV_P_ W w, int active) 1660ev_start (EV_P_ W w, int active)
1281{ 1661{
1282 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1662 pri_adjust (EV_A_ w);
1283 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1284
1285 w->active = active; 1663 w->active = active;
1286 ev_ref (EV_A); 1664 ev_ref (EV_A);
1287} 1665}
1288 1666
1289inline void 1667void inline_size
1290ev_stop (EV_P_ W w) 1668ev_stop (EV_P_ W w)
1291{ 1669{
1292 ev_unref (EV_A); 1670 ev_unref (EV_A);
1293 w->active = 0; 1671 w->active = 0;
1294} 1672}
1295 1673
1296/*****************************************************************************/ 1674/*****************************************************************************/
1297 1675
1298void 1676void noinline
1299ev_io_start (EV_P_ struct ev_io *w) 1677ev_io_start (EV_P_ ev_io *w)
1300{ 1678{
1301 int fd = w->fd; 1679 int fd = w->fd;
1302 1680
1303 if (ev_is_active (w)) 1681 if (expect_false (ev_is_active (w)))
1304 return; 1682 return;
1305 1683
1306 assert (("ev_io_start called with negative fd", fd >= 0)); 1684 assert (("ev_io_start called with negative fd", fd >= 0));
1307 1685
1308 ev_start (EV_A_ (W)w, 1); 1686 ev_start (EV_A_ (W)w, 1);
1309 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1687 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1310 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1688 wlist_add (&anfds[fd].head, (WL)w);
1311 1689
1312 fd_change (EV_A_ fd); 1690 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1691 w->events &= ~EV_IOFDSET;
1313} 1692}
1314 1693
1315void 1694void noinline
1316ev_io_stop (EV_P_ struct ev_io *w) 1695ev_io_stop (EV_P_ ev_io *w)
1317{ 1696{
1318 ev_clear_pending (EV_A_ (W)w); 1697 clear_pending (EV_A_ (W)w);
1319 if (!ev_is_active (w)) 1698 if (expect_false (!ev_is_active (w)))
1320 return; 1699 return;
1321 1700
1322 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1701 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1323 1702
1324 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1703 wlist_del (&anfds[w->fd].head, (WL)w);
1325 ev_stop (EV_A_ (W)w); 1704 ev_stop (EV_A_ (W)w);
1326 1705
1327 fd_change (EV_A_ w->fd); 1706 fd_change (EV_A_ w->fd, 1);
1328} 1707}
1329 1708
1330void 1709void noinline
1331ev_timer_start (EV_P_ struct ev_timer *w) 1710ev_timer_start (EV_P_ ev_timer *w)
1332{ 1711{
1333 if (ev_is_active (w)) 1712 if (expect_false (ev_is_active (w)))
1334 return; 1713 return;
1335 1714
1336 ((WT)w)->at += mn_now; 1715 ((WT)w)->at += mn_now;
1337 1716
1338 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1717 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1339 1718
1340 ev_start (EV_A_ (W)w, ++timercnt); 1719 ev_start (EV_A_ (W)w, ++timercnt);
1341 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1720 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1342 timers [timercnt - 1] = w; 1721 timers [timercnt - 1] = (WT)w;
1343 upheap ((WT *)timers, timercnt - 1); 1722 upheap (timers, timercnt - 1);
1344 1723
1345 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1724 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1346} 1725}
1347 1726
1348void 1727void noinline
1349ev_timer_stop (EV_P_ struct ev_timer *w) 1728ev_timer_stop (EV_P_ ev_timer *w)
1350{ 1729{
1351 ev_clear_pending (EV_A_ (W)w); 1730 clear_pending (EV_A_ (W)w);
1352 if (!ev_is_active (w)) 1731 if (expect_false (!ev_is_active (w)))
1353 return; 1732 return;
1354 1733
1355 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1734 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1356 1735
1357 if (((W)w)->active < timercnt--) 1736 {
1737 int active = ((W)w)->active;
1738
1739 if (expect_true (--active < --timercnt))
1358 { 1740 {
1359 timers [((W)w)->active - 1] = timers [timercnt]; 1741 timers [active] = timers [timercnt];
1360 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1742 adjustheap (timers, timercnt, active);
1361 } 1743 }
1744 }
1362 1745
1363 ((WT)w)->at -= mn_now; 1746 ((WT)w)->at -= mn_now;
1364 1747
1365 ev_stop (EV_A_ (W)w); 1748 ev_stop (EV_A_ (W)w);
1366} 1749}
1367 1750
1368void 1751void noinline
1369ev_timer_again (EV_P_ struct ev_timer *w) 1752ev_timer_again (EV_P_ ev_timer *w)
1370{ 1753{
1371 if (ev_is_active (w)) 1754 if (ev_is_active (w))
1372 { 1755 {
1373 if (w->repeat) 1756 if (w->repeat)
1374 { 1757 {
1375 ((WT)w)->at = mn_now + w->repeat; 1758 ((WT)w)->at = mn_now + w->repeat;
1376 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1759 adjustheap (timers, timercnt, ((W)w)->active - 1);
1377 } 1760 }
1378 else 1761 else
1379 ev_timer_stop (EV_A_ w); 1762 ev_timer_stop (EV_A_ w);
1380 } 1763 }
1381 else if (w->repeat) 1764 else if (w->repeat)
1765 {
1766 w->at = w->repeat;
1382 ev_timer_start (EV_A_ w); 1767 ev_timer_start (EV_A_ w);
1768 }
1383} 1769}
1384 1770
1385#if EV_PERIODICS 1771#if EV_PERIODIC_ENABLE
1386void 1772void noinline
1387ev_periodic_start (EV_P_ struct ev_periodic *w) 1773ev_periodic_start (EV_P_ ev_periodic *w)
1388{ 1774{
1389 if (ev_is_active (w)) 1775 if (expect_false (ev_is_active (w)))
1390 return; 1776 return;
1391 1777
1392 if (w->reschedule_cb) 1778 if (w->reschedule_cb)
1393 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1779 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1394 else if (w->interval) 1780 else if (w->interval)
1395 { 1781 {
1396 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1782 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1397 /* this formula differs from the one in periodic_reify because we do not always round up */ 1783 /* this formula differs from the one in periodic_reify because we do not always round up */
1398 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1784 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1399 } 1785 }
1786 else
1787 ((WT)w)->at = w->offset;
1400 1788
1401 ev_start (EV_A_ (W)w, ++periodiccnt); 1789 ev_start (EV_A_ (W)w, ++periodiccnt);
1402 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1790 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1403 periodics [periodiccnt - 1] = w; 1791 periodics [periodiccnt - 1] = (WT)w;
1404 upheap ((WT *)periodics, periodiccnt - 1); 1792 upheap (periodics, periodiccnt - 1);
1405 1793
1406 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1794 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1407} 1795}
1408 1796
1409void 1797void noinline
1410ev_periodic_stop (EV_P_ struct ev_periodic *w) 1798ev_periodic_stop (EV_P_ ev_periodic *w)
1411{ 1799{
1412 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1413 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
1414 return; 1802 return;
1415 1803
1416 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1804 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1417 1805
1418 if (((W)w)->active < periodiccnt--) 1806 {
1807 int active = ((W)w)->active;
1808
1809 if (expect_true (--active < --periodiccnt))
1419 { 1810 {
1420 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1811 periodics [active] = periodics [periodiccnt];
1421 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1812 adjustheap (periodics, periodiccnt, active);
1422 } 1813 }
1814 }
1423 1815
1424 ev_stop (EV_A_ (W)w); 1816 ev_stop (EV_A_ (W)w);
1425} 1817}
1426 1818
1427void 1819void noinline
1428ev_periodic_again (EV_P_ struct ev_periodic *w) 1820ev_periodic_again (EV_P_ ev_periodic *w)
1429{ 1821{
1430 /* TODO: use adjustheap and recalculation */ 1822 /* TODO: use adjustheap and recalculation */
1431 ev_periodic_stop (EV_A_ w); 1823 ev_periodic_stop (EV_A_ w);
1432 ev_periodic_start (EV_A_ w); 1824 ev_periodic_start (EV_A_ w);
1433} 1825}
1434#endif 1826#endif
1435 1827
1436void
1437ev_idle_start (EV_P_ struct ev_idle *w)
1438{
1439 if (ev_is_active (w))
1440 return;
1441
1442 ev_start (EV_A_ (W)w, ++idlecnt);
1443 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1444 idles [idlecnt - 1] = w;
1445}
1446
1447void
1448ev_idle_stop (EV_P_ struct ev_idle *w)
1449{
1450 ev_clear_pending (EV_A_ (W)w);
1451 if (!ev_is_active (w))
1452 return;
1453
1454 idles [((W)w)->active - 1] = idles [--idlecnt];
1455 ev_stop (EV_A_ (W)w);
1456}
1457
1458void
1459ev_prepare_start (EV_P_ struct ev_prepare *w)
1460{
1461 if (ev_is_active (w))
1462 return;
1463
1464 ev_start (EV_A_ (W)w, ++preparecnt);
1465 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1466 prepares [preparecnt - 1] = w;
1467}
1468
1469void
1470ev_prepare_stop (EV_P_ struct ev_prepare *w)
1471{
1472 ev_clear_pending (EV_A_ (W)w);
1473 if (!ev_is_active (w))
1474 return;
1475
1476 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1477 ev_stop (EV_A_ (W)w);
1478}
1479
1480void
1481ev_check_start (EV_P_ struct ev_check *w)
1482{
1483 if (ev_is_active (w))
1484 return;
1485
1486 ev_start (EV_A_ (W)w, ++checkcnt);
1487 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1488 checks [checkcnt - 1] = w;
1489}
1490
1491void
1492ev_check_stop (EV_P_ struct ev_check *w)
1493{
1494 ev_clear_pending (EV_A_ (W)w);
1495 if (!ev_is_active (w))
1496 return;
1497
1498 checks [((W)w)->active - 1] = checks [--checkcnt];
1499 ev_stop (EV_A_ (W)w);
1500}
1501
1502#ifndef SA_RESTART 1828#ifndef SA_RESTART
1503# define SA_RESTART 0 1829# define SA_RESTART 0
1504#endif 1830#endif
1505 1831
1506void 1832void noinline
1507ev_signal_start (EV_P_ struct ev_signal *w) 1833ev_signal_start (EV_P_ ev_signal *w)
1508{ 1834{
1509#if EV_MULTIPLICITY 1835#if EV_MULTIPLICITY
1510 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1836 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1511#endif 1837#endif
1512 if (ev_is_active (w)) 1838 if (expect_false (ev_is_active (w)))
1513 return; 1839 return;
1514 1840
1515 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1841 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1516 1842
1843 {
1844#ifndef _WIN32
1845 sigset_t full, prev;
1846 sigfillset (&full);
1847 sigprocmask (SIG_SETMASK, &full, &prev);
1848#endif
1849
1850 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1851
1852#ifndef _WIN32
1853 sigprocmask (SIG_SETMASK, &prev, 0);
1854#endif
1855 }
1856
1517 ev_start (EV_A_ (W)w, 1); 1857 ev_start (EV_A_ (W)w, 1);
1518 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1519 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1858 wlist_add (&signals [w->signum - 1].head, (WL)w);
1520 1859
1521 if (!((WL)w)->next) 1860 if (!((WL)w)->next)
1522 { 1861 {
1523#if _WIN32 1862#if _WIN32
1524 signal (w->signum, sighandler); 1863 signal (w->signum, sighandler);
… …
1530 sigaction (w->signum, &sa, 0); 1869 sigaction (w->signum, &sa, 0);
1531#endif 1870#endif
1532 } 1871 }
1533} 1872}
1534 1873
1535void 1874void noinline
1536ev_signal_stop (EV_P_ struct ev_signal *w) 1875ev_signal_stop (EV_P_ ev_signal *w)
1537{ 1876{
1538 ev_clear_pending (EV_A_ (W)w); 1877 clear_pending (EV_A_ (W)w);
1539 if (!ev_is_active (w)) 1878 if (expect_false (!ev_is_active (w)))
1540 return; 1879 return;
1541 1880
1542 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1881 wlist_del (&signals [w->signum - 1].head, (WL)w);
1543 ev_stop (EV_A_ (W)w); 1882 ev_stop (EV_A_ (W)w);
1544 1883
1545 if (!signals [w->signum - 1].head) 1884 if (!signals [w->signum - 1].head)
1546 signal (w->signum, SIG_DFL); 1885 signal (w->signum, SIG_DFL);
1547} 1886}
1548 1887
1549void 1888void
1550ev_child_start (EV_P_ struct ev_child *w) 1889ev_child_start (EV_P_ ev_child *w)
1551{ 1890{
1552#if EV_MULTIPLICITY 1891#if EV_MULTIPLICITY
1553 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1892 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1554#endif 1893#endif
1555 if (ev_is_active (w)) 1894 if (expect_false (ev_is_active (w)))
1556 return; 1895 return;
1557 1896
1558 ev_start (EV_A_ (W)w, 1); 1897 ev_start (EV_A_ (W)w, 1);
1559 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1898 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1560} 1899}
1561 1900
1562void 1901void
1563ev_child_stop (EV_P_ struct ev_child *w) 1902ev_child_stop (EV_P_ ev_child *w)
1564{ 1903{
1565 ev_clear_pending (EV_A_ (W)w); 1904 clear_pending (EV_A_ (W)w);
1566 if (!ev_is_active (w)) 1905 if (expect_false (!ev_is_active (w)))
1567 return; 1906 return;
1568 1907
1569 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1908 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1570 ev_stop (EV_A_ (W)w); 1909 ev_stop (EV_A_ (W)w);
1571} 1910}
1572 1911
1912#if EV_STAT_ENABLE
1913
1914# ifdef _WIN32
1915# undef lstat
1916# define lstat(a,b) _stati64 (a,b)
1917# endif
1918
1919#define DEF_STAT_INTERVAL 5.0074891
1920#define MIN_STAT_INTERVAL 0.1074891
1921
1922static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1923
1924#if EV_USE_INOTIFY
1925# define EV_INOTIFY_BUFSIZE 8192
1926
1927static void noinline
1928infy_add (EV_P_ ev_stat *w)
1929{
1930 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);
1931
1932 if (w->wd < 0)
1933 {
1934 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1935
1936 /* monitor some parent directory for speedup hints */
1937 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1938 {
1939 char path [4096];
1940 strcpy (path, w->path);
1941
1942 do
1943 {
1944 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1945 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1946
1947 char *pend = strrchr (path, '/');
1948
1949 if (!pend)
1950 break; /* whoops, no '/', complain to your admin */
1951
1952 *pend = 0;
1953 w->wd = inotify_add_watch (fs_fd, path, mask);
1954 }
1955 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1956 }
1957 }
1958 else
1959 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1960
1961 if (w->wd >= 0)
1962 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1963}
1964
1965static void noinline
1966infy_del (EV_P_ ev_stat *w)
1967{
1968 int slot;
1969 int wd = w->wd;
1970
1971 if (wd < 0)
1972 return;
1973
1974 w->wd = -2;
1975 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1976 wlist_del (&fs_hash [slot].head, (WL)w);
1977
1978 /* remove this watcher, if others are watching it, they will rearm */
1979 inotify_rm_watch (fs_fd, wd);
1980}
1981
1982static void noinline
1983infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1984{
1985 if (slot < 0)
1986 /* overflow, need to check for all hahs slots */
1987 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1988 infy_wd (EV_A_ slot, wd, ev);
1989 else
1990 {
1991 WL w_;
1992
1993 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1994 {
1995 ev_stat *w = (ev_stat *)w_;
1996 w_ = w_->next; /* lets us remove this watcher and all before it */
1997
1998 if (w->wd == wd || wd == -1)
1999 {
2000 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2001 {
2002 w->wd = -1;
2003 infy_add (EV_A_ w); /* re-add, no matter what */
2004 }
2005
2006 stat_timer_cb (EV_A_ &w->timer, 0);
2007 }
2008 }
2009 }
2010}
2011
2012static void
2013infy_cb (EV_P_ ev_io *w, int revents)
2014{
2015 char buf [EV_INOTIFY_BUFSIZE];
2016 struct inotify_event *ev = (struct inotify_event *)buf;
2017 int ofs;
2018 int len = read (fs_fd, buf, sizeof (buf));
2019
2020 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2021 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2022}
2023
2024void inline_size
2025infy_init (EV_P)
2026{
2027 if (fs_fd != -2)
2028 return;
2029
2030 fs_fd = inotify_init ();
2031
2032 if (fs_fd >= 0)
2033 {
2034 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2035 ev_set_priority (&fs_w, EV_MAXPRI);
2036 ev_io_start (EV_A_ &fs_w);
2037 }
2038}
2039
2040void inline_size
2041infy_fork (EV_P)
2042{
2043 int slot;
2044
2045 if (fs_fd < 0)
2046 return;
2047
2048 close (fs_fd);
2049 fs_fd = inotify_init ();
2050
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 {
2053 WL w_ = fs_hash [slot].head;
2054 fs_hash [slot].head = 0;
2055
2056 while (w_)
2057 {
2058 ev_stat *w = (ev_stat *)w_;
2059 w_ = w_->next; /* lets us add this watcher */
2060
2061 w->wd = -1;
2062
2063 if (fs_fd >= 0)
2064 infy_add (EV_A_ w); /* re-add, no matter what */
2065 else
2066 ev_timer_start (EV_A_ &w->timer);
2067 }
2068
2069 }
2070}
2071
2072#endif
2073
2074void
2075ev_stat_stat (EV_P_ ev_stat *w)
2076{
2077 if (lstat (w->path, &w->attr) < 0)
2078 w->attr.st_nlink = 0;
2079 else if (!w->attr.st_nlink)
2080 w->attr.st_nlink = 1;
2081}
2082
2083static void noinline
2084stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2085{
2086 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2087
2088 /* we copy this here each the time so that */
2089 /* prev has the old value when the callback gets invoked */
2090 w->prev = w->attr;
2091 ev_stat_stat (EV_A_ w);
2092
2093 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2094 if (
2095 w->prev.st_dev != w->attr.st_dev
2096 || w->prev.st_ino != w->attr.st_ino
2097 || w->prev.st_mode != w->attr.st_mode
2098 || w->prev.st_nlink != w->attr.st_nlink
2099 || w->prev.st_uid != w->attr.st_uid
2100 || w->prev.st_gid != w->attr.st_gid
2101 || w->prev.st_rdev != w->attr.st_rdev
2102 || w->prev.st_size != w->attr.st_size
2103 || w->prev.st_atime != w->attr.st_atime
2104 || w->prev.st_mtime != w->attr.st_mtime
2105 || w->prev.st_ctime != w->attr.st_ctime
2106 ) {
2107 #if EV_USE_INOTIFY
2108 infy_del (EV_A_ w);
2109 infy_add (EV_A_ w);
2110 ev_stat_stat (EV_A_ w); /* avoid race... */
2111 #endif
2112
2113 ev_feed_event (EV_A_ w, EV_STAT);
2114 }
2115}
2116
2117void
2118ev_stat_start (EV_P_ ev_stat *w)
2119{
2120 if (expect_false (ev_is_active (w)))
2121 return;
2122
2123 /* since we use memcmp, we need to clear any padding data etc. */
2124 memset (&w->prev, 0, sizeof (ev_statdata));
2125 memset (&w->attr, 0, sizeof (ev_statdata));
2126
2127 ev_stat_stat (EV_A_ w);
2128
2129 if (w->interval < MIN_STAT_INTERVAL)
2130 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2131
2132 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2133 ev_set_priority (&w->timer, ev_priority (w));
2134
2135#if EV_USE_INOTIFY
2136 infy_init (EV_A);
2137
2138 if (fs_fd >= 0)
2139 infy_add (EV_A_ w);
2140 else
2141#endif
2142 ev_timer_start (EV_A_ &w->timer);
2143
2144 ev_start (EV_A_ (W)w, 1);
2145}
2146
2147void
2148ev_stat_stop (EV_P_ ev_stat *w)
2149{
2150 clear_pending (EV_A_ (W)w);
2151 if (expect_false (!ev_is_active (w)))
2152 return;
2153
2154#if EV_USE_INOTIFY
2155 infy_del (EV_A_ w);
2156#endif
2157 ev_timer_stop (EV_A_ &w->timer);
2158
2159 ev_stop (EV_A_ (W)w);
2160}
2161#endif
2162
2163#if EV_IDLE_ENABLE
2164void
2165ev_idle_start (EV_P_ ev_idle *w)
2166{
2167 if (expect_false (ev_is_active (w)))
2168 return;
2169
2170 pri_adjust (EV_A_ (W)w);
2171
2172 {
2173 int active = ++idlecnt [ABSPRI (w)];
2174
2175 ++idleall;
2176 ev_start (EV_A_ (W)w, active);
2177
2178 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2179 idles [ABSPRI (w)][active - 1] = w;
2180 }
2181}
2182
2183void
2184ev_idle_stop (EV_P_ ev_idle *w)
2185{
2186 clear_pending (EV_A_ (W)w);
2187 if (expect_false (!ev_is_active (w)))
2188 return;
2189
2190 {
2191 int active = ((W)w)->active;
2192
2193 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2194 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2195
2196 ev_stop (EV_A_ (W)w);
2197 --idleall;
2198 }
2199}
2200#endif
2201
2202void
2203ev_prepare_start (EV_P_ ev_prepare *w)
2204{
2205 if (expect_false (ev_is_active (w)))
2206 return;
2207
2208 ev_start (EV_A_ (W)w, ++preparecnt);
2209 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2210 prepares [preparecnt - 1] = w;
2211}
2212
2213void
2214ev_prepare_stop (EV_P_ ev_prepare *w)
2215{
2216 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w)))
2218 return;
2219
2220 {
2221 int active = ((W)w)->active;
2222 prepares [active - 1] = prepares [--preparecnt];
2223 ((W)prepares [active - 1])->active = active;
2224 }
2225
2226 ev_stop (EV_A_ (W)w);
2227}
2228
2229void
2230ev_check_start (EV_P_ ev_check *w)
2231{
2232 if (expect_false (ev_is_active (w)))
2233 return;
2234
2235 ev_start (EV_A_ (W)w, ++checkcnt);
2236 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2237 checks [checkcnt - 1] = w;
2238}
2239
2240void
2241ev_check_stop (EV_P_ ev_check *w)
2242{
2243 clear_pending (EV_A_ (W)w);
2244 if (expect_false (!ev_is_active (w)))
2245 return;
2246
2247 {
2248 int active = ((W)w)->active;
2249 checks [active - 1] = checks [--checkcnt];
2250 ((W)checks [active - 1])->active = active;
2251 }
2252
2253 ev_stop (EV_A_ (W)w);
2254}
2255
2256#if EV_EMBED_ENABLE
2257void noinline
2258ev_embed_sweep (EV_P_ ev_embed *w)
2259{
2260 ev_loop (w->other, EVLOOP_NONBLOCK);
2261}
2262
2263static void
2264embed_io_cb (EV_P_ ev_io *io, int revents)
2265{
2266 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2267
2268 if (ev_cb (w))
2269 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2270 else
2271 ev_embed_sweep (loop, w);
2272}
2273
2274static void
2275embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276{
2277 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278
2279 fd_reify (w->other);
2280}
2281
2282void
2283ev_embed_start (EV_P_ ev_embed *w)
2284{
2285 if (expect_false (ev_is_active (w)))
2286 return;
2287
2288 {
2289 struct ev_loop *loop = w->other;
2290 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2291 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2292 }
2293
2294 ev_set_priority (&w->io, ev_priority (w));
2295 ev_io_start (EV_A_ &w->io);
2296
2297 ev_prepare_init (&w->prepare, embed_prepare_cb);
2298 ev_set_priority (&w->prepare, EV_MINPRI);
2299 ev_prepare_start (EV_A_ &w->prepare);
2300
2301 ev_start (EV_A_ (W)w, 1);
2302}
2303
2304void
2305ev_embed_stop (EV_P_ ev_embed *w)
2306{
2307 clear_pending (EV_A_ (W)w);
2308 if (expect_false (!ev_is_active (w)))
2309 return;
2310
2311 ev_io_stop (EV_A_ &w->io);
2312 ev_prepare_stop (EV_A_ &w->prepare);
2313
2314 ev_stop (EV_A_ (W)w);
2315}
2316#endif
2317
2318#if EV_FORK_ENABLE
2319void
2320ev_fork_start (EV_P_ ev_fork *w)
2321{
2322 if (expect_false (ev_is_active (w)))
2323 return;
2324
2325 ev_start (EV_A_ (W)w, ++forkcnt);
2326 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2327 forks [forkcnt - 1] = w;
2328}
2329
2330void
2331ev_fork_stop (EV_P_ ev_fork *w)
2332{
2333 clear_pending (EV_A_ (W)w);
2334 if (expect_false (!ev_is_active (w)))
2335 return;
2336
2337 {
2338 int active = ((W)w)->active;
2339 forks [active - 1] = forks [--forkcnt];
2340 ((W)forks [active - 1])->active = active;
2341 }
2342
2343 ev_stop (EV_A_ (W)w);
2344}
2345#endif
2346
1573/*****************************************************************************/ 2347/*****************************************************************************/
1574 2348
1575struct ev_once 2349struct ev_once
1576{ 2350{
1577 struct ev_io io; 2351 ev_io io;
1578 struct ev_timer to; 2352 ev_timer to;
1579 void (*cb)(int revents, void *arg); 2353 void (*cb)(int revents, void *arg);
1580 void *arg; 2354 void *arg;
1581}; 2355};
1582 2356
1583static void 2357static void
… …
1592 2366
1593 cb (revents, arg); 2367 cb (revents, arg);
1594} 2368}
1595 2369
1596static void 2370static void
1597once_cb_io (EV_P_ struct ev_io *w, int revents) 2371once_cb_io (EV_P_ ev_io *w, int revents)
1598{ 2372{
1599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2373 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1600} 2374}
1601 2375
1602static void 2376static void
1603once_cb_to (EV_P_ struct ev_timer *w, int revents) 2377once_cb_to (EV_P_ ev_timer *w, int revents)
1604{ 2378{
1605 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2379 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1606} 2380}
1607 2381
1608void 2382void
1609ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2383ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1610{ 2384{
1611 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2385 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1612 2386
1613 if (!once) 2387 if (expect_false (!once))
2388 {
1614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2389 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1615 else 2390 return;
1616 { 2391 }
2392
1617 once->cb = cb; 2393 once->cb = cb;
1618 once->arg = arg; 2394 once->arg = arg;
1619 2395
1620 ev_init (&once->io, once_cb_io); 2396 ev_init (&once->io, once_cb_io);
1621 if (fd >= 0) 2397 if (fd >= 0)
1622 { 2398 {
1623 ev_io_set (&once->io, fd, events); 2399 ev_io_set (&once->io, fd, events);
1624 ev_io_start (EV_A_ &once->io); 2400 ev_io_start (EV_A_ &once->io);
1625 } 2401 }
1626 2402
1627 ev_init (&once->to, once_cb_to); 2403 ev_init (&once->to, once_cb_to);
1628 if (timeout >= 0.) 2404 if (timeout >= 0.)
1629 { 2405 {
1630 ev_timer_set (&once->to, timeout, 0.); 2406 ev_timer_set (&once->to, timeout, 0.);
1631 ev_timer_start (EV_A_ &once->to); 2407 ev_timer_start (EV_A_ &once->to);
1632 }
1633 } 2408 }
1634} 2409}
2410
2411#if EV_MULTIPLICITY
2412 #include "ev_wrap.h"
2413#endif
1635 2414
1636#ifdef __cplusplus 2415#ifdef __cplusplus
1637} 2416}
1638#endif 2417#endif
1639 2418

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