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Comparing libev/ev.c (file contents):
Revision 1.108 by root, Mon Nov 12 05:40:55 2007 UTC vs.
Revision 1.185 by root, Fri Dec 14 18:22:30 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_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 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_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
58# endif 81# endif
59 82
83# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
62# endif 105# endif
63 106
64#endif 107#endif
65 108
66#include <math.h> 109#include <math.h>
… …
75#include <sys/types.h> 118#include <sys/types.h>
76#include <time.h> 119#include <time.h>
77 120
78#include <signal.h> 121#include <signal.h>
79 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
80#ifndef _WIN32 129#ifndef _WIN32
81# include <unistd.h>
82# include <sys/time.h> 130# include <sys/time.h>
83# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
84#else 133#else
85# define WIN32_LEAN_AND_MEAN 134# define WIN32_LEAN_AND_MEAN
86# include <windows.h> 135# include <windows.h>
87# ifndef EV_SELECT_IS_WINSOCKET 136# ifndef EV_SELECT_IS_WINSOCKET
88# define EV_SELECT_IS_WINSOCKET 1 137# define EV_SELECT_IS_WINSOCKET 1
… …
90#endif 139#endif
91 140
92/**/ 141/**/
93 142
94#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
95# define EV_USE_MONOTONIC 1 144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
96#endif 149#endif
97 150
98#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
99# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
101#endif 153#endif
102 154
103#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
104# ifdef _WIN32 156# ifdef _WIN32
105# define EV_USE_POLL 0 157# define EV_USE_POLL 0
… …
114 166
115#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
117#endif 169#endif
118 170
119#ifndef EV_USE_REALTIME 171#ifndef EV_USE_PORT
120# define EV_USE_REALTIME 1 172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
121#endif 193#endif
122 194
123/**/ 195/**/
124
125/* darwin simply cannot be helped */
126#ifdef __APPLE__
127# undef EV_USE_POLL
128# undef EV_USE_KQUEUE
129#endif
130 196
131#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
132# undef EV_USE_MONOTONIC 198# undef EV_USE_MONOTONIC
133# define EV_USE_MONOTONIC 0 199# define EV_USE_MONOTONIC 0
134#endif 200#endif
… …
136#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
137# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
138# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
139#endif 205#endif
140 206
207#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0
210#endif
211
212#if EV_USE_INOTIFY
213# include <sys/inotify.h>
214#endif
215
141#if EV_SELECT_IS_WINSOCKET 216#if EV_SELECT_IS_WINSOCKET
142# include <winsock.h> 217# include <winsock.h>
143#endif 218#endif
144 219
145/**/ 220/**/
146 221
222/*
223 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding
226 * errors are against us.
227 * This value is good at least till the year 4000.
228 * Better solutions welcome.
229 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231
147#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
148#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
149#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
151 235
152#ifdef EV_H
153# include EV_H
154#else
155# include "ev.h"
156#endif
157
158#if __GNUC__ >= 3 236#if __GNUC__ >= 4
159# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
160# define inline inline 238# define noinline __attribute__ ((noinline))
161#else 239#else
162# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
163# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
164#endif 245#endif
165 246
166#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
167#define expect_true(expr) expect ((expr) != 0, 1) 248#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline
250
251#if EV_MINIMAL
252# define inline_speed static noinline
253#else
254# define inline_speed static inline
255#endif
168 256
169#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
171 259
172#define EMPTY /* required for microsofts broken pseudo-c compiler */ 260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
173 262
174typedef struct ev_watcher *W; 263typedef ev_watcher *W;
175typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
176typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
177 266
178static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
179 268
180#ifdef _WIN32 269#ifdef _WIN32
181# include "ev_win32.c" 270# include "ev_win32.c"
… …
183 272
184/*****************************************************************************/ 273/*****************************************************************************/
185 274
186static void (*syserr_cb)(const char *msg); 275static void (*syserr_cb)(const char *msg);
187 276
277void
188void ev_set_syserr_cb (void (*cb)(const char *msg)) 278ev_set_syserr_cb (void (*cb)(const char *msg))
189{ 279{
190 syserr_cb = cb; 280 syserr_cb = cb;
191} 281}
192 282
193static void 283static void noinline
194syserr (const char *msg) 284syserr (const char *msg)
195{ 285{
196 if (!msg) 286 if (!msg)
197 msg = "(libev) system error"; 287 msg = "(libev) system error";
198 288
… …
205 } 295 }
206} 296}
207 297
208static void *(*alloc)(void *ptr, long size); 298static void *(*alloc)(void *ptr, long size);
209 299
300void
210void ev_set_allocator (void *(*cb)(void *ptr, long size)) 301ev_set_allocator (void *(*cb)(void *ptr, long size))
211{ 302{
212 alloc = cb; 303 alloc = cb;
213} 304}
214 305
215static void * 306inline_speed void *
216ev_realloc (void *ptr, long size) 307ev_realloc (void *ptr, long size)
217{ 308{
218 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
219 310
220 if (!ptr && size) 311 if (!ptr && size)
… …
244typedef struct 335typedef struct
245{ 336{
246 W w; 337 W w;
247 int events; 338 int events;
248} ANPENDING; 339} ANPENDING;
340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
249 347
250#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
251 349
252 struct ev_loop 350 struct ev_loop
253 { 351 {
… …
257 #include "ev_vars.h" 355 #include "ev_vars.h"
258 #undef VAR 356 #undef VAR
259 }; 357 };
260 #include "ev_wrap.h" 358 #include "ev_wrap.h"
261 359
262 struct ev_loop default_loop_struct; 360 static struct ev_loop default_loop_struct;
263 static struct ev_loop *default_loop; 361 struct ev_loop *ev_default_loop_ptr;
264 362
265#else 363#else
266 364
267 ev_tstamp ev_rt_now; 365 ev_tstamp ev_rt_now;
268 #define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
269 #include "ev_vars.h" 367 #include "ev_vars.h"
270 #undef VAR 368 #undef VAR
271 369
272 static int default_loop; 370 static int ev_default_loop_ptr;
273 371
274#endif 372#endif
275 373
276/*****************************************************************************/ 374/*****************************************************************************/
277 375
… …
287 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
288 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
289#endif 387#endif
290} 388}
291 389
292inline ev_tstamp 390ev_tstamp inline_size
293get_clock (void) 391get_clock (void)
294{ 392{
295#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
296 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
297 { 395 {
… …
310{ 408{
311 return ev_rt_now; 409 return ev_rt_now;
312} 410}
313#endif 411#endif
314 412
315#define array_roundsize(type,n) (((n) | 4) & ~3) 413int inline_size
414array_nextsize (int elem, int cur, int cnt)
415{
416 int ncur = cur + 1;
417
418 do
419 ncur <<= 1;
420 while (cnt > ncur);
421
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096)
424 {
425 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
427 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem;
429 }
430
431 return ncur;
432}
433
434static noinline void *
435array_realloc (int elem, void *base, int *cur, int cnt)
436{
437 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur);
439}
316 440
317#define array_needsize(type,base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
318 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
319 { \ 443 { \
320 int newcnt = cur; \ 444 int ocur_ = (cur); \
321 do \ 445 (base) = (type *)array_realloc \
322 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
323 newcnt = array_roundsize (type, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
324 } \
325 while ((cnt) > newcnt); \
326 \
327 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
328 init (base + cur, newcnt - cur); \
329 cur = newcnt; \
330 } 448 }
331 449
450#if 0
332#define array_slim(type,stem) \ 451#define array_slim(type,stem) \
333 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
334 { \ 453 { \
335 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
336 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
337 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
338 } 457 }
458#endif
339 459
340#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
341 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
342 462
343/*****************************************************************************/ 463/*****************************************************************************/
344 464
345static void 465void noinline
466ev_feed_event (EV_P_ void *w, int revents)
467{
468 W w_ = (W)w;
469 int pri = ABSPRI (w_);
470
471 if (expect_false (w_->pending))
472 pendings [pri][w_->pending - 1].events |= revents;
473 else
474 {
475 w_->pending = ++pendingcnt [pri];
476 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
477 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents;
479 }
480}
481
482void inline_speed
483queue_events (EV_P_ W *events, int eventcnt, int type)
484{
485 int i;
486
487 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type);
489}
490
491/*****************************************************************************/
492
493void inline_size
346anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
347{ 495{
348 while (count--) 496 while (count--)
349 { 497 {
350 base->head = 0; 498 base->head = 0;
… …
353 501
354 ++base; 502 ++base;
355 } 503 }
356} 504}
357 505
358void 506void inline_speed
359ev_feed_event (EV_P_ void *w, int revents)
360{
361 W w_ = (W)w;
362
363 if (w_->pending)
364 {
365 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
366 return;
367 }
368
369 w_->pending = ++pendingcnt [ABSPRI (w_)];
370 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
371 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
372 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
373}
374
375static void
376queue_events (EV_P_ W *events, int eventcnt, int type)
377{
378 int i;
379
380 for (i = 0; i < eventcnt; ++i)
381 ev_feed_event (EV_A_ events [i], type);
382}
383
384inline void
385fd_event (EV_P_ int fd, int revents) 507fd_event (EV_P_ int fd, int revents)
386{ 508{
387 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 510 ev_io *w;
389 511
390 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
391 { 513 {
392 int ev = w->events & revents; 514 int ev = w->events & revents;
393 515
394 if (ev) 516 if (ev)
395 ev_feed_event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
… …
397} 519}
398 520
399void 521void
400ev_feed_fd_event (EV_P_ int fd, int revents) 522ev_feed_fd_event (EV_P_ int fd, int revents)
401{ 523{
524 if (fd >= 0 && fd < anfdmax)
402 fd_event (EV_A_ fd, revents); 525 fd_event (EV_A_ fd, revents);
403} 526}
404 527
405/*****************************************************************************/ 528void inline_size
406
407static void
408fd_reify (EV_P) 529fd_reify (EV_P)
409{ 530{
410 int i; 531 int i;
411 532
412 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
413 { 534 {
414 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
415 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
416 struct ev_io *w; 537 ev_io *w;
417 538
418 int events = 0; 539 unsigned char events = 0;
419 540
420 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
421 events |= w->events; 542 events |= (unsigned char)w->events;
422 543
423#if EV_SELECT_IS_WINSOCKET 544#if EV_SELECT_IS_WINSOCKET
424 if (events) 545 if (events)
425 { 546 {
426 unsigned long argp; 547 unsigned long argp;
427 anfd->handle = _get_osfhandle (fd); 548 anfd->handle = _get_osfhandle (fd);
428 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
429 } 550 }
430#endif 551#endif
431 552
553 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
432 anfd->reify = 0; 557 anfd->reify = 0;
433
434 method_modify (EV_A_ fd, anfd->events, events);
435 anfd->events = events; 558 anfd->events = events;
559
560 if (o_events != events || o_reify & EV_IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events);
562 }
436 } 563 }
437 564
438 fdchangecnt = 0; 565 fdchangecnt = 0;
439} 566}
440 567
441static void 568void inline_size
442fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
443{ 570{
444 if (anfds [fd].reify) 571 unsigned char reify = anfds [fd].reify;
445 return;
446
447 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
448 573
574 if (expect_true (!reify))
575 {
449 ++fdchangecnt; 576 ++fdchangecnt;
450 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
451 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
452} 580}
453 581
454static void 582void inline_speed
455fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
456{ 584{
457 struct ev_io *w; 585 ev_io *w;
458 586
459 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
460 { 588 {
461 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
462 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
463 } 591 }
464} 592}
465 593
466static int 594int inline_size
467fd_valid (int fd) 595fd_valid (int fd)
468{ 596{
469#ifdef _WIN32 597#ifdef _WIN32
470 return _get_osfhandle (fd) != -1; 598 return _get_osfhandle (fd) != -1;
471#else 599#else
472 return fcntl (fd, F_GETFD) != -1; 600 return fcntl (fd, F_GETFD) != -1;
473#endif 601#endif
474} 602}
475 603
476/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
477static void 605static void noinline
478fd_ebadf (EV_P) 606fd_ebadf (EV_P)
479{ 607{
480 int fd; 608 int fd;
481 609
482 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
… …
484 if (!fd_valid (fd) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
485 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
486} 614}
487 615
488/* called on ENOMEM in select/poll to kill some fds and retry */ 616/* called on ENOMEM in select/poll to kill some fds and retry */
489static void 617static void noinline
490fd_enomem (EV_P) 618fd_enomem (EV_P)
491{ 619{
492 int fd; 620 int fd;
493 621
494 for (fd = anfdmax; fd--; ) 622 for (fd = anfdmax; fd--; )
… …
497 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
498 return; 626 return;
499 } 627 }
500} 628}
501 629
502/* usually called after fork if method needs to re-arm all fds from scratch */ 630/* usually called after fork if backend needs to re-arm all fds from scratch */
503static void 631static void noinline
504fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
505{ 633{
506 int fd; 634 int fd;
507 635
508 /* this should be highly optimised to not do anything but set a flag */
509 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
510 if (anfds [fd].events) 637 if (anfds [fd].events)
511 { 638 {
512 anfds [fd].events = 0; 639 anfds [fd].events = 0;
513 fd_change (EV_A_ fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
514 } 641 }
515} 642}
516 643
517/*****************************************************************************/ 644/*****************************************************************************/
518 645
519static void 646void inline_speed
520upheap (WT *heap, int k) 647upheap (WT *heap, int k)
521{ 648{
522 WT w = heap [k]; 649 WT w = heap [k];
523 650
524 while (k && heap [k >> 1]->at > w->at) 651 while (k)
525 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
526 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
527 ((W)heap [k])->active = k + 1; 659 ((W)heap [k])->active = k + 1;
528 k >>= 1; 660 k = p;
529 } 661 }
530 662
531 heap [k] = w; 663 heap [k] = w;
532 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
533
534} 665}
535 666
536static void 667void inline_speed
537downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
538{ 669{
539 WT w = heap [k]; 670 WT w = heap [k];
540 671
541 while (k < (N >> 1)) 672 for (;;)
542 { 673 {
543 int j = k << 1; 674 int c = (k << 1) + 1;
544 675
545 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
546 ++j;
547
548 if (w->at <= heap [j]->at)
549 break; 677 break;
550 678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
551 heap [k] = heap [j]; 685 heap [k] = heap [c];
552 ((W)heap [k])->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
553 k = j; 688 k = c;
554 } 689 }
555 690
556 heap [k] = w; 691 heap [k] = w;
557 ((W)heap [k])->active = k + 1; 692 ((W)heap [k])->active = k + 1;
558} 693}
559 694
560inline void 695void inline_size
561adjustheap (WT *heap, int N, int k) 696adjustheap (WT *heap, int N, int k)
562{ 697{
563 upheap (heap, k); 698 upheap (heap, k);
564 downheap (heap, N, k); 699 downheap (heap, N, k);
565} 700}
… …
575static ANSIG *signals; 710static ANSIG *signals;
576static int signalmax; 711static int signalmax;
577 712
578static int sigpipe [2]; 713static int sigpipe [2];
579static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
580static struct ev_io sigev; 715static ev_io sigev;
581 716
582static void 717void inline_size
583signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
584{ 719{
585 while (count--) 720 while (count--)
586 { 721 {
587 base->head = 0; 722 base->head = 0;
… …
607 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
608 errno = old_errno; 743 errno = old_errno;
609 } 744 }
610} 745}
611 746
612void 747void noinline
613ev_feed_signal_event (EV_P_ int signum) 748ev_feed_signal_event (EV_P_ int signum)
614{ 749{
615 WL w; 750 WL w;
616 751
617#if EV_MULTIPLICITY 752#if EV_MULTIPLICITY
618 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
619#endif 754#endif
620 755
621 --signum; 756 --signum;
622 757
623 if (signum < 0 || signum >= signalmax) 758 if (signum < 0 || signum >= signalmax)
… …
628 for (w = signals [signum].head; w; w = w->next) 763 for (w = signals [signum].head; w; w = w->next)
629 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
630} 765}
631 766
632static void 767static void
633sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
634{ 769{
635 int signum; 770 int signum;
636 771
637 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
638 gotsig = 0; 773 gotsig = 0;
… …
640 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
641 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
642 ev_feed_signal_event (EV_A_ signum + 1); 777 ev_feed_signal_event (EV_A_ signum + 1);
643} 778}
644 779
645inline void 780void inline_speed
646fd_intern (int fd) 781fd_intern (int fd)
647{ 782{
648#ifdef _WIN32 783#ifdef _WIN32
649 int arg = 1; 784 int arg = 1;
650 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
652 fcntl (fd, F_SETFD, FD_CLOEXEC); 787 fcntl (fd, F_SETFD, FD_CLOEXEC);
653 fcntl (fd, F_SETFL, O_NONBLOCK); 788 fcntl (fd, F_SETFL, O_NONBLOCK);
654#endif 789#endif
655} 790}
656 791
657static void 792static void noinline
658siginit (EV_P) 793siginit (EV_P)
659{ 794{
660 fd_intern (sigpipe [0]); 795 fd_intern (sigpipe [0]);
661 fd_intern (sigpipe [1]); 796 fd_intern (sigpipe [1]);
662 797
… …
665 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
666} 801}
667 802
668/*****************************************************************************/ 803/*****************************************************************************/
669 804
670static struct ev_child *childs [PID_HASHSIZE]; 805static WL childs [EV_PID_HASHSIZE];
671 806
672#ifndef _WIN32 807#ifndef _WIN32
673 808
674static struct ev_signal childev; 809static ev_signal childev;
810
811void inline_speed
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813{
814 ev_child *w;
815
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
817 if (w->pid == pid || !w->pid)
818 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
820 w->rpid = pid;
821 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 }
824}
675 825
676#ifndef WCONTINUED 826#ifndef WCONTINUED
677# define WCONTINUED 0 827# define WCONTINUED 0
678#endif 828#endif
679 829
680static void 830static void
681child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
682{
683 struct ev_child *w;
684
685 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
686 if (w->pid == pid || !w->pid)
687 {
688 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
689 w->rpid = pid;
690 w->rstatus = status;
691 ev_feed_event (EV_A_ (W)w, EV_CHILD);
692 }
693}
694
695static void
696childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
697{ 832{
698 int pid, status; 833 int pid, status;
699 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
700 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
701 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
702 /* make sure we are called again until all childs have been reaped */ 842 /* make sure we are called again until all childs have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */
703 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
704 845
705 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
706 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
707 }
708} 849}
709 850
710#endif 851#endif
711 852
712/*****************************************************************************/ 853/*****************************************************************************/
713 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
714#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
715# include "ev_kqueue.c" 859# include "ev_kqueue.c"
716#endif 860#endif
717#if EV_USE_EPOLL 861#if EV_USE_EPOLL
718# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
735{ 879{
736 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
737} 881}
738 882
739/* return true if we are running with elevated privileges and should ignore env variables */ 883/* return true if we are running with elevated privileges and should ignore env variables */
740static int 884int inline_size
741enable_secure (void) 885enable_secure (void)
742{ 886{
743#ifdef _WIN32 887#ifdef _WIN32
744 return 0; 888 return 0;
745#else 889#else
746 return getuid () != geteuid () 890 return getuid () != geteuid ()
747 || getgid () != getegid (); 891 || getgid () != getegid ();
748#endif 892#endif
749} 893}
750 894
751int 895unsigned int
752ev_method (EV_P) 896ev_supported_backends (void)
753{ 897{
754 return method; 898 unsigned int flags = 0;
755}
756 899
757static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
901 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
902 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
903 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
904 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
905
906 return flags;
907}
908
909unsigned int
910ev_recommended_backends (void)
911{
912 unsigned int flags = ev_supported_backends ();
913
914#ifndef __NetBSD__
915 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE;
918#endif
919#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation
921 flags &= ~EVBACKEND_POLL;
922#endif
923
924 return flags;
925}
926
927unsigned int
928ev_embeddable_backends (void)
929{
930 return EVBACKEND_EPOLL
931 | EVBACKEND_KQUEUE
932 | EVBACKEND_PORT;
933}
934
935unsigned int
936ev_backend (EV_P)
937{
938 return backend;
939}
940
941unsigned int
942ev_loop_count (EV_P)
943{
944 return loop_count;
945}
946
947static void noinline
758loop_init (EV_P_ unsigned int flags) 948loop_init (EV_P_ unsigned int flags)
759{ 949{
760 if (!method) 950 if (!backend)
761 { 951 {
762#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
763 { 953 {
764 struct timespec ts; 954 struct timespec ts;
765 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
770 ev_rt_now = ev_time (); 960 ev_rt_now = ev_time ();
771 mn_now = get_clock (); 961 mn_now = get_clock ();
772 now_floor = mn_now; 962 now_floor = mn_now;
773 rtmn_diff = ev_rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
774 964
775 if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 965 /* pid check not overridable via env */
966#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid ();
969#endif
970
971 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS"))
776 flags = atoi (getenv ("LIBEV_FLAGS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
777 975
778 if (!(flags & 0x0000ffff)) 976 if (!(flags & 0x0000ffffUL))
779 flags |= 0x0000ffff; 977 flags |= ev_recommended_backends ();
780 978
781 method = 0; 979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984
985#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif
782#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
783 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
784#endif 990#endif
785#if EV_USE_EPOLL 991#if EV_USE_EPOLL
786 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
787#endif 993#endif
788#if EV_USE_POLL 994#if EV_USE_POLL
789 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
790#endif 996#endif
791#if EV_USE_SELECT 997#if EV_USE_SELECT
792 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
793#endif 999#endif
794 1000
795 ev_init (&sigev, sigcb); 1001 ev_init (&sigev, sigcb);
796 ev_set_priority (&sigev, EV_MAXPRI); 1002 ev_set_priority (&sigev, EV_MAXPRI);
797 } 1003 }
798} 1004}
799 1005
800void 1006static void noinline
801loop_destroy (EV_P) 1007loop_destroy (EV_P)
802{ 1008{
803 int i; 1009 int i;
804 1010
1011#if EV_USE_INOTIFY
1012 if (fs_fd >= 0)
1013 close (fs_fd);
1014#endif
1015
1016 if (backend_fd >= 0)
1017 close (backend_fd);
1018
1019#if EV_USE_PORT
1020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1021#endif
805#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
806 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
807#endif 1024#endif
808#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
809 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
810#endif 1027#endif
811#if EV_USE_POLL 1028#if EV_USE_POLL
812 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
813#endif 1030#endif
814#if EV_USE_SELECT 1031#if EV_USE_SELECT
815 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
816#endif 1033#endif
817 1034
818 for (i = NUMPRI; i--; ) 1035 for (i = NUMPRI; i--; )
1036 {
819 array_free (pending, [i]); 1037 array_free (pending, [i]);
1038#if EV_IDLE_ENABLE
1039 array_free (idle, [i]);
1040#endif
1041 }
820 1042
821 /* have to use the microsoft-never-gets-it-right macro */ 1043 /* have to use the microsoft-never-gets-it-right macro */
822 array_free (fdchange, EMPTY); 1044 array_free (fdchange, EMPTY);
823 array_free (timer, EMPTY); 1045 array_free (timer, EMPTY);
824#if EV_PERIODICS 1046#if EV_PERIODIC_ENABLE
825 array_free (periodic, EMPTY); 1047 array_free (periodic, EMPTY);
826#endif 1048#endif
827 array_free (idle, EMPTY);
828 array_free (prepare, EMPTY); 1049 array_free (prepare, EMPTY);
829 array_free (check, EMPTY); 1050 array_free (check, EMPTY);
830 1051
831 method = 0; 1052 backend = 0;
832} 1053}
833 1054
834static void 1055void inline_size infy_fork (EV_P);
1056
1057void inline_size
835loop_fork (EV_P) 1058loop_fork (EV_P)
836{ 1059{
1060#if EV_USE_PORT
1061 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1062#endif
1063#if EV_USE_KQUEUE
1064 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1065#endif
837#if EV_USE_EPOLL 1066#if EV_USE_EPOLL
838 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1067 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
839#endif 1068#endif
840#if EV_USE_KQUEUE 1069#if EV_USE_INOTIFY
841 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1070 infy_fork (EV_A);
842#endif 1071#endif
843 1072
844 if (ev_is_active (&sigev)) 1073 if (ev_is_active (&sigev))
845 { 1074 {
846 /* default loop */ 1075 /* default loop */
… …
867 1096
868 memset (loop, 0, sizeof (struct ev_loop)); 1097 memset (loop, 0, sizeof (struct ev_loop));
869 1098
870 loop_init (EV_A_ flags); 1099 loop_init (EV_A_ flags);
871 1100
872 if (ev_method (EV_A)) 1101 if (ev_backend (EV_A))
873 return loop; 1102 return loop;
874 1103
875 return 0; 1104 return 0;
876} 1105}
877 1106
… …
890 1119
891#endif 1120#endif
892 1121
893#if EV_MULTIPLICITY 1122#if EV_MULTIPLICITY
894struct ev_loop * 1123struct ev_loop *
1124ev_default_loop_init (unsigned int flags)
895#else 1125#else
896int 1126int
897#endif
898ev_default_loop (unsigned int methods) 1127ev_default_loop (unsigned int flags)
1128#endif
899{ 1129{
900 if (sigpipe [0] == sigpipe [1]) 1130 if (sigpipe [0] == sigpipe [1])
901 if (pipe (sigpipe)) 1131 if (pipe (sigpipe))
902 return 0; 1132 return 0;
903 1133
904 if (!default_loop) 1134 if (!ev_default_loop_ptr)
905 { 1135 {
906#if EV_MULTIPLICITY 1136#if EV_MULTIPLICITY
907 struct ev_loop *loop = default_loop = &default_loop_struct; 1137 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
908#else 1138#else
909 default_loop = 1; 1139 ev_default_loop_ptr = 1;
910#endif 1140#endif
911 1141
912 loop_init (EV_A_ methods); 1142 loop_init (EV_A_ flags);
913 1143
914 if (ev_method (EV_A)) 1144 if (ev_backend (EV_A))
915 { 1145 {
916 siginit (EV_A); 1146 siginit (EV_A);
917 1147
918#ifndef _WIN32 1148#ifndef _WIN32
919 ev_signal_init (&childev, childcb, SIGCHLD); 1149 ev_signal_init (&childev, childcb, SIGCHLD);
… …
921 ev_signal_start (EV_A_ &childev); 1151 ev_signal_start (EV_A_ &childev);
922 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1152 ev_unref (EV_A); /* child watcher should not keep loop alive */
923#endif 1153#endif
924 } 1154 }
925 else 1155 else
926 default_loop = 0; 1156 ev_default_loop_ptr = 0;
927 } 1157 }
928 1158
929 return default_loop; 1159 return ev_default_loop_ptr;
930} 1160}
931 1161
932void 1162void
933ev_default_destroy (void) 1163ev_default_destroy (void)
934{ 1164{
935#if EV_MULTIPLICITY 1165#if EV_MULTIPLICITY
936 struct ev_loop *loop = default_loop; 1166 struct ev_loop *loop = ev_default_loop_ptr;
937#endif 1167#endif
938 1168
939#ifndef _WIN32 1169#ifndef _WIN32
940 ev_ref (EV_A); /* child watcher */ 1170 ev_ref (EV_A); /* child watcher */
941 ev_signal_stop (EV_A_ &childev); 1171 ev_signal_stop (EV_A_ &childev);
… …
952 1182
953void 1183void
954ev_default_fork (void) 1184ev_default_fork (void)
955{ 1185{
956#if EV_MULTIPLICITY 1186#if EV_MULTIPLICITY
957 struct ev_loop *loop = default_loop; 1187 struct ev_loop *loop = ev_default_loop_ptr;
958#endif 1188#endif
959 1189
960 if (method) 1190 if (backend)
961 postfork = 1; 1191 postfork = 1;
962} 1192}
963 1193
964/*****************************************************************************/ 1194/*****************************************************************************/
965 1195
966static int 1196void
967any_pending (EV_P) 1197ev_invoke (EV_P_ void *w, int revents)
968{ 1198{
969 int pri; 1199 EV_CB_INVOKE ((W)w, revents);
970
971 for (pri = NUMPRI; pri--; )
972 if (pendingcnt [pri])
973 return 1;
974
975 return 0;
976} 1200}
977 1201
978static void 1202void inline_speed
979call_pending (EV_P) 1203call_pending (EV_P)
980{ 1204{
981 int pri; 1205 int pri;
982 1206
983 for (pri = NUMPRI; pri--; ) 1207 for (pri = NUMPRI; pri--; )
984 while (pendingcnt [pri]) 1208 while (pendingcnt [pri])
985 { 1209 {
986 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1210 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
987 1211
988 if (p->w) 1212 if (expect_true (p->w))
989 { 1213 {
1214 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1215
990 p->w->pending = 0; 1216 p->w->pending = 0;
991 EV_CB_INVOKE (p->w, p->events); 1217 EV_CB_INVOKE (p->w, p->events);
992 } 1218 }
993 } 1219 }
994} 1220}
995 1221
996static void 1222void inline_size
997timers_reify (EV_P) 1223timers_reify (EV_P)
998{ 1224{
999 while (timercnt && ((WT)timers [0])->at <= mn_now) 1225 while (timercnt && ((WT)timers [0])->at <= mn_now)
1000 { 1226 {
1001 struct ev_timer *w = timers [0]; 1227 ev_timer *w = (ev_timer *)timers [0];
1002 1228
1003 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1229 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1004 1230
1005 /* first reschedule or stop timer */ 1231 /* first reschedule or stop timer */
1006 if (w->repeat) 1232 if (w->repeat)
1007 { 1233 {
1008 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1234 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1009 1235
1010 ((WT)w)->at += w->repeat; 1236 ((WT)w)->at += w->repeat;
1011 if (((WT)w)->at < mn_now) 1237 if (((WT)w)->at < mn_now)
1012 ((WT)w)->at = mn_now; 1238 ((WT)w)->at = mn_now;
1013 1239
1014 downheap ((WT *)timers, timercnt, 0); 1240 downheap (timers, timercnt, 0);
1015 } 1241 }
1016 else 1242 else
1017 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1243 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1244
1019 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1245 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1020 } 1246 }
1021} 1247}
1022 1248
1023#if EV_PERIODICS 1249#if EV_PERIODIC_ENABLE
1024static void 1250void inline_size
1025periodics_reify (EV_P) 1251periodics_reify (EV_P)
1026{ 1252{
1027 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1253 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1028 { 1254 {
1029 struct ev_periodic *w = periodics [0]; 1255 ev_periodic *w = (ev_periodic *)periodics [0];
1030 1256
1031 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1257 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1032 1258
1033 /* first reschedule or stop timer */ 1259 /* first reschedule or stop timer */
1034 if (w->reschedule_cb) 1260 if (w->reschedule_cb)
1035 { 1261 {
1036 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1262 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1037 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1263 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1038 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap (periodics, periodiccnt, 0);
1039 } 1265 }
1040 else if (w->interval) 1266 else if (w->interval)
1041 { 1267 {
1042 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1268 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1269 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1043 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1270 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1044 downheap ((WT *)periodics, periodiccnt, 0); 1271 downheap (periodics, periodiccnt, 0);
1045 } 1272 }
1046 else 1273 else
1047 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1274 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1048 1275
1049 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1276 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1050 } 1277 }
1051} 1278}
1052 1279
1053static void 1280static void noinline
1054periodics_reschedule (EV_P) 1281periodics_reschedule (EV_P)
1055{ 1282{
1056 int i; 1283 int i;
1057 1284
1058 /* adjust periodics after time jump */ 1285 /* adjust periodics after time jump */
1059 for (i = 0; i < periodiccnt; ++i) 1286 for (i = 0; i < periodiccnt; ++i)
1060 { 1287 {
1061 struct ev_periodic *w = periodics [i]; 1288 ev_periodic *w = (ev_periodic *)periodics [i];
1062 1289
1063 if (w->reschedule_cb) 1290 if (w->reschedule_cb)
1064 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1291 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1065 else if (w->interval) 1292 else if (w->interval)
1066 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1293 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1067 } 1294 }
1068 1295
1069 /* now rebuild the heap */ 1296 /* now rebuild the heap */
1070 for (i = periodiccnt >> 1; i--; ) 1297 for (i = periodiccnt >> 1; i--; )
1071 downheap ((WT *)periodics, periodiccnt, i); 1298 downheap (periodics, periodiccnt, i);
1072} 1299}
1073#endif 1300#endif
1074 1301
1075inline int 1302#if EV_IDLE_ENABLE
1076time_update_monotonic (EV_P) 1303void inline_size
1304idle_reify (EV_P)
1077{ 1305{
1306 if (expect_false (idleall))
1307 {
1308 int pri;
1309
1310 for (pri = NUMPRI; pri--; )
1311 {
1312 if (pendingcnt [pri])
1313 break;
1314
1315 if (idlecnt [pri])
1316 {
1317 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1318 break;
1319 }
1320 }
1321 }
1322}
1323#endif
1324
1325void inline_speed
1326time_update (EV_P_ ev_tstamp max_block)
1327{
1328 int i;
1329
1330#if EV_USE_MONOTONIC
1331 if (expect_true (have_monotonic))
1332 {
1333 ev_tstamp odiff = rtmn_diff;
1334
1078 mn_now = get_clock (); 1335 mn_now = get_clock ();
1079 1336
1337 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1338 /* interpolate in the meantime */
1080 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1339 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1081 { 1340 {
1082 ev_rt_now = rtmn_diff + mn_now; 1341 ev_rt_now = rtmn_diff + mn_now;
1083 return 0; 1342 return;
1084 } 1343 }
1085 else 1344
1086 {
1087 now_floor = mn_now; 1345 now_floor = mn_now;
1088 ev_rt_now = ev_time (); 1346 ev_rt_now = ev_time ();
1089 return 1;
1090 }
1091}
1092 1347
1093static void 1348 /* loop a few times, before making important decisions.
1094time_update (EV_P) 1349 * on the choice of "4": one iteration isn't enough,
1095{ 1350 * in case we get preempted during the calls to
1096 int i; 1351 * ev_time and get_clock. a second call is almost guaranteed
1097 1352 * to succeed in that case, though. and looping a few more times
1098#if EV_USE_MONOTONIC 1353 * doesn't hurt either as we only do this on time-jumps or
1099 if (expect_true (have_monotonic)) 1354 * in the unlikely event of having been preempted here.
1100 { 1355 */
1101 if (time_update_monotonic (EV_A)) 1356 for (i = 4; --i; )
1102 { 1357 {
1103 ev_tstamp odiff = rtmn_diff;
1104
1105 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1106 {
1107 rtmn_diff = ev_rt_now - mn_now; 1358 rtmn_diff = ev_rt_now - mn_now;
1108 1359
1109 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1360 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1110 return; /* all is well */ 1361 return; /* all is well */
1111 1362
1112 ev_rt_now = ev_time (); 1363 ev_rt_now = ev_time ();
1113 mn_now = get_clock (); 1364 mn_now = get_clock ();
1114 now_floor = mn_now; 1365 now_floor = mn_now;
1115 } 1366 }
1116 1367
1117# if EV_PERIODICS 1368# if EV_PERIODIC_ENABLE
1369 periodics_reschedule (EV_A);
1370# endif
1371 /* no timer adjustment, as the monotonic clock doesn't jump */
1372 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373 }
1374 else
1375#endif
1376 {
1377 ev_rt_now = ev_time ();
1378
1379 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1380 {
1381#if EV_PERIODIC_ENABLE
1118 periodics_reschedule (EV_A); 1382 periodics_reschedule (EV_A);
1119# endif 1383#endif
1120 /* no timer adjustment, as the monotonic clock doesn't jump */
1121 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1122 }
1123 }
1124 else
1125#endif
1126 {
1127 ev_rt_now = ev_time ();
1128
1129 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1130 {
1131#if EV_PERIODICS
1132 periodics_reschedule (EV_A);
1133#endif
1134
1135 /* adjust timers. this is easy, as the offset is the same for all */ 1384 /* adjust timers. this is easy, as the offset is the same for all of them */
1136 for (i = 0; i < timercnt; ++i) 1385 for (i = 0; i < timercnt; ++i)
1137 ((WT)timers [i])->at += ev_rt_now - mn_now; 1386 ((WT)timers [i])->at += ev_rt_now - mn_now;
1138 } 1387 }
1139 1388
1140 mn_now = ev_rt_now; 1389 mn_now = ev_rt_now;
… …
1156static int loop_done; 1405static int loop_done;
1157 1406
1158void 1407void
1159ev_loop (EV_P_ int flags) 1408ev_loop (EV_P_ int flags)
1160{ 1409{
1161 double block;
1162 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1410 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1411 ? EVUNLOOP_ONE
1412 : EVUNLOOP_CANCEL;
1413
1414 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1163 1415
1164 do 1416 do
1165 { 1417 {
1418#ifndef _WIN32
1419 if (expect_false (curpid)) /* penalise the forking check even more */
1420 if (expect_false (getpid () != curpid))
1421 {
1422 curpid = getpid ();
1423 postfork = 1;
1424 }
1425#endif
1426
1427#if EV_FORK_ENABLE
1428 /* we might have forked, so queue fork handlers */
1429 if (expect_false (postfork))
1430 if (forkcnt)
1431 {
1432 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1433 call_pending (EV_A);
1434 }
1435#endif
1436
1166 /* queue check watchers (and execute them) */ 1437 /* queue prepare watchers (and execute them) */
1167 if (expect_false (preparecnt)) 1438 if (expect_false (preparecnt))
1168 { 1439 {
1169 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1440 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1170 call_pending (EV_A); 1441 call_pending (EV_A);
1171 } 1442 }
1172 1443
1444 if (expect_false (!activecnt))
1445 break;
1446
1173 /* we might have forked, so reify kernel state if necessary */ 1447 /* we might have forked, so reify kernel state if necessary */
1174 if (expect_false (postfork)) 1448 if (expect_false (postfork))
1175 loop_fork (EV_A); 1449 loop_fork (EV_A);
1176 1450
1177 /* update fd-related kernel structures */ 1451 /* update fd-related kernel structures */
1178 fd_reify (EV_A); 1452 fd_reify (EV_A);
1179 1453
1180 /* calculate blocking time */ 1454 /* calculate blocking time */
1455 {
1456 ev_tstamp block;
1181 1457
1182 /* we only need this for !monotonic clock or timers, but as we basically 1458 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1183 always have timers, we just calculate it always */ 1459 block = 0.; /* do not block at all */
1184#if EV_USE_MONOTONIC
1185 if (expect_true (have_monotonic))
1186 time_update_monotonic (EV_A);
1187 else 1460 else
1188#endif
1189 { 1461 {
1190 ev_rt_now = ev_time (); 1462 /* update time to cancel out callback processing overhead */
1191 mn_now = ev_rt_now; 1463 time_update (EV_A_ 1e100);
1192 }
1193 1464
1194 if (flags & EVLOOP_NONBLOCK || idlecnt)
1195 block = 0.;
1196 else
1197 {
1198 block = MAX_BLOCKTIME; 1465 block = MAX_BLOCKTIME;
1199 1466
1200 if (timercnt) 1467 if (timercnt)
1201 { 1468 {
1202 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1469 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1203 if (block > to) block = to; 1470 if (block > to) block = to;
1204 } 1471 }
1205 1472
1206#if EV_PERIODICS 1473#if EV_PERIODIC_ENABLE
1207 if (periodiccnt) 1474 if (periodiccnt)
1208 { 1475 {
1209 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1476 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1210 if (block > to) block = to; 1477 if (block > to) block = to;
1211 } 1478 }
1212#endif 1479#endif
1213 1480
1214 if (block < 0.) block = 0.; 1481 if (expect_false (block < 0.)) block = 0.;
1215 } 1482 }
1216 1483
1484 ++loop_count;
1217 method_poll (EV_A_ block); 1485 backend_poll (EV_A_ block);
1218 1486
1219 /* update ev_rt_now, do magic */ 1487 /* update ev_rt_now, do magic */
1220 time_update (EV_A); 1488 time_update (EV_A_ block);
1489 }
1221 1490
1222 /* queue pending timers and reschedule them */ 1491 /* queue pending timers and reschedule them */
1223 timers_reify (EV_A); /* relative timers called last */ 1492 timers_reify (EV_A); /* relative timers called last */
1224#if EV_PERIODICS 1493#if EV_PERIODIC_ENABLE
1225 periodics_reify (EV_A); /* absolute timers called first */ 1494 periodics_reify (EV_A); /* absolute timers called first */
1226#endif 1495#endif
1227 1496
1497#if EV_IDLE_ENABLE
1228 /* queue idle watchers unless io or timers are pending */ 1498 /* queue idle watchers unless other events are pending */
1229 if (idlecnt && !any_pending (EV_A)) 1499 idle_reify (EV_A);
1230 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1500#endif
1231 1501
1232 /* queue check watchers, to be executed first */ 1502 /* queue check watchers, to be executed first */
1233 if (checkcnt) 1503 if (expect_false (checkcnt))
1234 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1504 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1235 1505
1236 call_pending (EV_A); 1506 call_pending (EV_A);
1507
1237 } 1508 }
1238 while (activecnt && !loop_done); 1509 while (expect_true (activecnt && !loop_done));
1239 1510
1240 if (loop_done != 2) 1511 if (loop_done == EVUNLOOP_ONE)
1241 loop_done = 0; 1512 loop_done = EVUNLOOP_CANCEL;
1242} 1513}
1243 1514
1244void 1515void
1245ev_unloop (EV_P_ int how) 1516ev_unloop (EV_P_ int how)
1246{ 1517{
1247 loop_done = how; 1518 loop_done = how;
1248} 1519}
1249 1520
1250/*****************************************************************************/ 1521/*****************************************************************************/
1251 1522
1252inline void 1523void inline_size
1253wlist_add (WL *head, WL elem) 1524wlist_add (WL *head, WL elem)
1254{ 1525{
1255 elem->next = *head; 1526 elem->next = *head;
1256 *head = elem; 1527 *head = elem;
1257} 1528}
1258 1529
1259inline void 1530void inline_size
1260wlist_del (WL *head, WL elem) 1531wlist_del (WL *head, WL elem)
1261{ 1532{
1262 while (*head) 1533 while (*head)
1263 { 1534 {
1264 if (*head == elem) 1535 if (*head == elem)
… …
1269 1540
1270 head = &(*head)->next; 1541 head = &(*head)->next;
1271 } 1542 }
1272} 1543}
1273 1544
1274inline void 1545void inline_speed
1275ev_clear_pending (EV_P_ W w) 1546clear_pending (EV_P_ W w)
1276{ 1547{
1277 if (w->pending) 1548 if (w->pending)
1278 { 1549 {
1279 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1550 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1280 w->pending = 0; 1551 w->pending = 0;
1281 } 1552 }
1282} 1553}
1283 1554
1284inline void 1555int
1556ev_clear_pending (EV_P_ void *w)
1557{
1558 W w_ = (W)w;
1559 int pending = w_->pending;
1560
1561 if (expect_true (pending))
1562 {
1563 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1564 w_->pending = 0;
1565 p->w = 0;
1566 return p->events;
1567 }
1568 else
1569 return 0;
1570}
1571
1572void inline_size
1573pri_adjust (EV_P_ W w)
1574{
1575 int pri = w->priority;
1576 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1577 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1578 w->priority = pri;
1579}
1580
1581void inline_speed
1285ev_start (EV_P_ W w, int active) 1582ev_start (EV_P_ W w, int active)
1286{ 1583{
1287 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1584 pri_adjust (EV_A_ w);
1288 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1289
1290 w->active = active; 1585 w->active = active;
1291 ev_ref (EV_A); 1586 ev_ref (EV_A);
1292} 1587}
1293 1588
1294inline void 1589void inline_size
1295ev_stop (EV_P_ W w) 1590ev_stop (EV_P_ W w)
1296{ 1591{
1297 ev_unref (EV_A); 1592 ev_unref (EV_A);
1298 w->active = 0; 1593 w->active = 0;
1299} 1594}
1300 1595
1301/*****************************************************************************/ 1596/*****************************************************************************/
1302 1597
1303void 1598void noinline
1304ev_io_start (EV_P_ struct ev_io *w) 1599ev_io_start (EV_P_ ev_io *w)
1305{ 1600{
1306 int fd = w->fd; 1601 int fd = w->fd;
1307 1602
1308 if (ev_is_active (w)) 1603 if (expect_false (ev_is_active (w)))
1309 return; 1604 return;
1310 1605
1311 assert (("ev_io_start called with negative fd", fd >= 0)); 1606 assert (("ev_io_start called with negative fd", fd >= 0));
1312 1607
1313 ev_start (EV_A_ (W)w, 1); 1608 ev_start (EV_A_ (W)w, 1);
1314 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1609 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1315 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1610 wlist_add (&anfds[fd].head, (WL)w);
1316 1611
1317 fd_change (EV_A_ fd); 1612 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1613 w->events &= ~EV_IOFDSET;
1318} 1614}
1319 1615
1320void 1616void noinline
1321ev_io_stop (EV_P_ struct ev_io *w) 1617ev_io_stop (EV_P_ ev_io *w)
1322{ 1618{
1323 ev_clear_pending (EV_A_ (W)w); 1619 clear_pending (EV_A_ (W)w);
1324 if (!ev_is_active (w)) 1620 if (expect_false (!ev_is_active (w)))
1325 return; 1621 return;
1326 1622
1327 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1623 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1328 1624
1329 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1625 wlist_del (&anfds[w->fd].head, (WL)w);
1330 ev_stop (EV_A_ (W)w); 1626 ev_stop (EV_A_ (W)w);
1331 1627
1332 fd_change (EV_A_ w->fd); 1628 fd_change (EV_A_ w->fd, 1);
1333} 1629}
1334 1630
1335void 1631void noinline
1336ev_timer_start (EV_P_ struct ev_timer *w) 1632ev_timer_start (EV_P_ ev_timer *w)
1337{ 1633{
1338 if (ev_is_active (w)) 1634 if (expect_false (ev_is_active (w)))
1339 return; 1635 return;
1340 1636
1341 ((WT)w)->at += mn_now; 1637 ((WT)w)->at += mn_now;
1342 1638
1343 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1639 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1344 1640
1345 ev_start (EV_A_ (W)w, ++timercnt); 1641 ev_start (EV_A_ (W)w, ++timercnt);
1346 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1642 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1347 timers [timercnt - 1] = w; 1643 timers [timercnt - 1] = (WT)w;
1348 upheap ((WT *)timers, timercnt - 1); 1644 upheap (timers, timercnt - 1);
1349 1645
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1646 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1351} 1647}
1352 1648
1353void 1649void noinline
1354ev_timer_stop (EV_P_ struct ev_timer *w) 1650ev_timer_stop (EV_P_ ev_timer *w)
1355{ 1651{
1356 ev_clear_pending (EV_A_ (W)w); 1652 clear_pending (EV_A_ (W)w);
1357 if (!ev_is_active (w)) 1653 if (expect_false (!ev_is_active (w)))
1358 return; 1654 return;
1359 1655
1360 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1656 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1361 1657
1362 if (((W)w)->active < timercnt--) 1658 {
1659 int active = ((W)w)->active;
1660
1661 if (expect_true (--active < --timercnt))
1363 { 1662 {
1364 timers [((W)w)->active - 1] = timers [timercnt]; 1663 timers [active] = timers [timercnt];
1365 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1664 adjustheap (timers, timercnt, active);
1366 } 1665 }
1666 }
1367 1667
1368 ((WT)w)->at -= mn_now; 1668 ((WT)w)->at -= mn_now;
1369 1669
1370 ev_stop (EV_A_ (W)w); 1670 ev_stop (EV_A_ (W)w);
1371} 1671}
1372 1672
1373void 1673void noinline
1374ev_timer_again (EV_P_ struct ev_timer *w) 1674ev_timer_again (EV_P_ ev_timer *w)
1375{ 1675{
1376 if (ev_is_active (w)) 1676 if (ev_is_active (w))
1377 { 1677 {
1378 if (w->repeat) 1678 if (w->repeat)
1379 { 1679 {
1380 ((WT)w)->at = mn_now + w->repeat; 1680 ((WT)w)->at = mn_now + w->repeat;
1381 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1681 adjustheap (timers, timercnt, ((W)w)->active - 1);
1382 } 1682 }
1383 else 1683 else
1384 ev_timer_stop (EV_A_ w); 1684 ev_timer_stop (EV_A_ w);
1385 } 1685 }
1386 else if (w->repeat) 1686 else if (w->repeat)
1687 {
1688 w->at = w->repeat;
1387 ev_timer_start (EV_A_ w); 1689 ev_timer_start (EV_A_ w);
1690 }
1388} 1691}
1389 1692
1390#if EV_PERIODICS 1693#if EV_PERIODIC_ENABLE
1391void 1694void noinline
1392ev_periodic_start (EV_P_ struct ev_periodic *w) 1695ev_periodic_start (EV_P_ ev_periodic *w)
1393{ 1696{
1394 if (ev_is_active (w)) 1697 if (expect_false (ev_is_active (w)))
1395 return; 1698 return;
1396 1699
1397 if (w->reschedule_cb) 1700 if (w->reschedule_cb)
1398 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1701 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1399 else if (w->interval) 1702 else if (w->interval)
1400 { 1703 {
1401 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1704 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1402 /* this formula differs from the one in periodic_reify because we do not always round up */ 1705 /* this formula differs from the one in periodic_reify because we do not always round up */
1403 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1706 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1404 } 1707 }
1708 else
1709 ((WT)w)->at = w->offset;
1405 1710
1406 ev_start (EV_A_ (W)w, ++periodiccnt); 1711 ev_start (EV_A_ (W)w, ++periodiccnt);
1407 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1712 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1408 periodics [periodiccnt - 1] = w; 1713 periodics [periodiccnt - 1] = (WT)w;
1409 upheap ((WT *)periodics, periodiccnt - 1); 1714 upheap (periodics, periodiccnt - 1);
1410 1715
1411 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1716 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1412} 1717}
1413 1718
1414void 1719void noinline
1415ev_periodic_stop (EV_P_ struct ev_periodic *w) 1720ev_periodic_stop (EV_P_ ev_periodic *w)
1416{ 1721{
1417 ev_clear_pending (EV_A_ (W)w); 1722 clear_pending (EV_A_ (W)w);
1418 if (!ev_is_active (w)) 1723 if (expect_false (!ev_is_active (w)))
1419 return; 1724 return;
1420 1725
1421 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1726 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1422 1727
1423 if (((W)w)->active < periodiccnt--) 1728 {
1729 int active = ((W)w)->active;
1730
1731 if (expect_true (--active < --periodiccnt))
1424 { 1732 {
1425 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1733 periodics [active] = periodics [periodiccnt];
1426 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1734 adjustheap (periodics, periodiccnt, active);
1427 } 1735 }
1736 }
1428 1737
1429 ev_stop (EV_A_ (W)w); 1738 ev_stop (EV_A_ (W)w);
1430} 1739}
1431 1740
1432void 1741void noinline
1433ev_periodic_again (EV_P_ struct ev_periodic *w) 1742ev_periodic_again (EV_P_ ev_periodic *w)
1434{ 1743{
1435 /* TODO: use adjustheap and recalculation */ 1744 /* TODO: use adjustheap and recalculation */
1436 ev_periodic_stop (EV_A_ w); 1745 ev_periodic_stop (EV_A_ w);
1437 ev_periodic_start (EV_A_ w); 1746 ev_periodic_start (EV_A_ w);
1438} 1747}
1439#endif 1748#endif
1440 1749
1441void
1442ev_idle_start (EV_P_ struct ev_idle *w)
1443{
1444 if (ev_is_active (w))
1445 return;
1446
1447 ev_start (EV_A_ (W)w, ++idlecnt);
1448 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1449 idles [idlecnt - 1] = w;
1450}
1451
1452void
1453ev_idle_stop (EV_P_ struct ev_idle *w)
1454{
1455 ev_clear_pending (EV_A_ (W)w);
1456 if (!ev_is_active (w))
1457 return;
1458
1459 idles [((W)w)->active - 1] = idles [--idlecnt];
1460 ev_stop (EV_A_ (W)w);
1461}
1462
1463void
1464ev_prepare_start (EV_P_ struct ev_prepare *w)
1465{
1466 if (ev_is_active (w))
1467 return;
1468
1469 ev_start (EV_A_ (W)w, ++preparecnt);
1470 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1471 prepares [preparecnt - 1] = w;
1472}
1473
1474void
1475ev_prepare_stop (EV_P_ struct ev_prepare *w)
1476{
1477 ev_clear_pending (EV_A_ (W)w);
1478 if (!ev_is_active (w))
1479 return;
1480
1481 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1482 ev_stop (EV_A_ (W)w);
1483}
1484
1485void
1486ev_check_start (EV_P_ struct ev_check *w)
1487{
1488 if (ev_is_active (w))
1489 return;
1490
1491 ev_start (EV_A_ (W)w, ++checkcnt);
1492 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1493 checks [checkcnt - 1] = w;
1494}
1495
1496void
1497ev_check_stop (EV_P_ struct ev_check *w)
1498{
1499 ev_clear_pending (EV_A_ (W)w);
1500 if (!ev_is_active (w))
1501 return;
1502
1503 checks [((W)w)->active - 1] = checks [--checkcnt];
1504 ev_stop (EV_A_ (W)w);
1505}
1506
1507#ifndef SA_RESTART 1750#ifndef SA_RESTART
1508# define SA_RESTART 0 1751# define SA_RESTART 0
1509#endif 1752#endif
1510 1753
1511void 1754void noinline
1512ev_signal_start (EV_P_ struct ev_signal *w) 1755ev_signal_start (EV_P_ ev_signal *w)
1513{ 1756{
1514#if EV_MULTIPLICITY 1757#if EV_MULTIPLICITY
1515 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1758 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1516#endif 1759#endif
1517 if (ev_is_active (w)) 1760 if (expect_false (ev_is_active (w)))
1518 return; 1761 return;
1519 1762
1520 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1763 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1521 1764
1765 {
1766#ifndef _WIN32
1767 sigset_t full, prev;
1768 sigfillset (&full);
1769 sigprocmask (SIG_SETMASK, &full, &prev);
1770#endif
1771
1772 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1773
1774#ifndef _WIN32
1775 sigprocmask (SIG_SETMASK, &prev, 0);
1776#endif
1777 }
1778
1522 ev_start (EV_A_ (W)w, 1); 1779 ev_start (EV_A_ (W)w, 1);
1523 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1524 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1780 wlist_add (&signals [w->signum - 1].head, (WL)w);
1525 1781
1526 if (!((WL)w)->next) 1782 if (!((WL)w)->next)
1527 { 1783 {
1528#if _WIN32 1784#if _WIN32
1529 signal (w->signum, sighandler); 1785 signal (w->signum, sighandler);
… …
1535 sigaction (w->signum, &sa, 0); 1791 sigaction (w->signum, &sa, 0);
1536#endif 1792#endif
1537 } 1793 }
1538} 1794}
1539 1795
1540void 1796void noinline
1541ev_signal_stop (EV_P_ struct ev_signal *w) 1797ev_signal_stop (EV_P_ ev_signal *w)
1542{ 1798{
1543 ev_clear_pending (EV_A_ (W)w); 1799 clear_pending (EV_A_ (W)w);
1544 if (!ev_is_active (w)) 1800 if (expect_false (!ev_is_active (w)))
1545 return; 1801 return;
1546 1802
1547 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1803 wlist_del (&signals [w->signum - 1].head, (WL)w);
1548 ev_stop (EV_A_ (W)w); 1804 ev_stop (EV_A_ (W)w);
1549 1805
1550 if (!signals [w->signum - 1].head) 1806 if (!signals [w->signum - 1].head)
1551 signal (w->signum, SIG_DFL); 1807 signal (w->signum, SIG_DFL);
1552} 1808}
1553 1809
1554void 1810void
1555ev_child_start (EV_P_ struct ev_child *w) 1811ev_child_start (EV_P_ ev_child *w)
1556{ 1812{
1557#if EV_MULTIPLICITY 1813#if EV_MULTIPLICITY
1558 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1814 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1559#endif 1815#endif
1560 if (ev_is_active (w)) 1816 if (expect_false (ev_is_active (w)))
1561 return; 1817 return;
1562 1818
1563 ev_start (EV_A_ (W)w, 1); 1819 ev_start (EV_A_ (W)w, 1);
1564 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1565} 1821}
1566 1822
1567void 1823void
1568ev_child_stop (EV_P_ struct ev_child *w) 1824ev_child_stop (EV_P_ ev_child *w)
1569{ 1825{
1570 ev_clear_pending (EV_A_ (W)w); 1826 clear_pending (EV_A_ (W)w);
1571 if (!ev_is_active (w)) 1827 if (expect_false (!ev_is_active (w)))
1572 return; 1828 return;
1573 1829
1574 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1830 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1575 ev_stop (EV_A_ (W)w); 1831 ev_stop (EV_A_ (W)w);
1576} 1832}
1577 1833
1834#if EV_STAT_ENABLE
1835
1836# ifdef _WIN32
1837# undef lstat
1838# define lstat(a,b) _stati64 (a,b)
1839# endif
1840
1841#define DEF_STAT_INTERVAL 5.0074891
1842#define MIN_STAT_INTERVAL 0.1074891
1843
1844static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1845
1846#if EV_USE_INOTIFY
1847# define EV_INOTIFY_BUFSIZE 8192
1848
1849static void noinline
1850infy_add (EV_P_ ev_stat *w)
1851{
1852 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);
1853
1854 if (w->wd < 0)
1855 {
1856 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1857
1858 /* monitor some parent directory for speedup hints */
1859 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1860 {
1861 char path [4096];
1862 strcpy (path, w->path);
1863
1864 do
1865 {
1866 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1867 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1868
1869 char *pend = strrchr (path, '/');
1870
1871 if (!pend)
1872 break; /* whoops, no '/', complain to your admin */
1873
1874 *pend = 0;
1875 w->wd = inotify_add_watch (fs_fd, path, mask);
1876 }
1877 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1878 }
1879 }
1880 else
1881 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1882
1883 if (w->wd >= 0)
1884 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1885}
1886
1887static void noinline
1888infy_del (EV_P_ ev_stat *w)
1889{
1890 int slot;
1891 int wd = w->wd;
1892
1893 if (wd < 0)
1894 return;
1895
1896 w->wd = -2;
1897 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1898 wlist_del (&fs_hash [slot].head, (WL)w);
1899
1900 /* remove this watcher, if others are watching it, they will rearm */
1901 inotify_rm_watch (fs_fd, wd);
1902}
1903
1904static void noinline
1905infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1906{
1907 if (slot < 0)
1908 /* overflow, need to check for all hahs slots */
1909 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1910 infy_wd (EV_A_ slot, wd, ev);
1911 else
1912 {
1913 WL w_;
1914
1915 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1916 {
1917 ev_stat *w = (ev_stat *)w_;
1918 w_ = w_->next; /* lets us remove this watcher and all before it */
1919
1920 if (w->wd == wd || wd == -1)
1921 {
1922 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1923 {
1924 w->wd = -1;
1925 infy_add (EV_A_ w); /* re-add, no matter what */
1926 }
1927
1928 stat_timer_cb (EV_A_ &w->timer, 0);
1929 }
1930 }
1931 }
1932}
1933
1934static void
1935infy_cb (EV_P_ ev_io *w, int revents)
1936{
1937 char buf [EV_INOTIFY_BUFSIZE];
1938 struct inotify_event *ev = (struct inotify_event *)buf;
1939 int ofs;
1940 int len = read (fs_fd, buf, sizeof (buf));
1941
1942 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1943 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1944}
1945
1946void inline_size
1947infy_init (EV_P)
1948{
1949 if (fs_fd != -2)
1950 return;
1951
1952 fs_fd = inotify_init ();
1953
1954 if (fs_fd >= 0)
1955 {
1956 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1957 ev_set_priority (&fs_w, EV_MAXPRI);
1958 ev_io_start (EV_A_ &fs_w);
1959 }
1960}
1961
1962void inline_size
1963infy_fork (EV_P)
1964{
1965 int slot;
1966
1967 if (fs_fd < 0)
1968 return;
1969
1970 close (fs_fd);
1971 fs_fd = inotify_init ();
1972
1973 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1974 {
1975 WL w_ = fs_hash [slot].head;
1976 fs_hash [slot].head = 0;
1977
1978 while (w_)
1979 {
1980 ev_stat *w = (ev_stat *)w_;
1981 w_ = w_->next; /* lets us add this watcher */
1982
1983 w->wd = -1;
1984
1985 if (fs_fd >= 0)
1986 infy_add (EV_A_ w); /* re-add, no matter what */
1987 else
1988 ev_timer_start (EV_A_ &w->timer);
1989 }
1990
1991 }
1992}
1993
1994#endif
1995
1996void
1997ev_stat_stat (EV_P_ ev_stat *w)
1998{
1999 if (lstat (w->path, &w->attr) < 0)
2000 w->attr.st_nlink = 0;
2001 else if (!w->attr.st_nlink)
2002 w->attr.st_nlink = 1;
2003}
2004
2005static void noinline
2006stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2007{
2008 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2009
2010 /* we copy this here each the time so that */
2011 /* prev has the old value when the callback gets invoked */
2012 w->prev = w->attr;
2013 ev_stat_stat (EV_A_ w);
2014
2015 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2016 if (
2017 w->prev.st_dev != w->attr.st_dev
2018 || w->prev.st_ino != w->attr.st_ino
2019 || w->prev.st_mode != w->attr.st_mode
2020 || w->prev.st_nlink != w->attr.st_nlink
2021 || w->prev.st_uid != w->attr.st_uid
2022 || w->prev.st_gid != w->attr.st_gid
2023 || w->prev.st_rdev != w->attr.st_rdev
2024 || w->prev.st_size != w->attr.st_size
2025 || w->prev.st_atime != w->attr.st_atime
2026 || w->prev.st_mtime != w->attr.st_mtime
2027 || w->prev.st_ctime != w->attr.st_ctime
2028 ) {
2029 #if EV_USE_INOTIFY
2030 infy_del (EV_A_ w);
2031 infy_add (EV_A_ w);
2032 ev_stat_stat (EV_A_ w); /* avoid race... */
2033 #endif
2034
2035 ev_feed_event (EV_A_ w, EV_STAT);
2036 }
2037}
2038
2039void
2040ev_stat_start (EV_P_ ev_stat *w)
2041{
2042 if (expect_false (ev_is_active (w)))
2043 return;
2044
2045 /* since we use memcmp, we need to clear any padding data etc. */
2046 memset (&w->prev, 0, sizeof (ev_statdata));
2047 memset (&w->attr, 0, sizeof (ev_statdata));
2048
2049 ev_stat_stat (EV_A_ w);
2050
2051 if (w->interval < MIN_STAT_INTERVAL)
2052 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2053
2054 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2055 ev_set_priority (&w->timer, ev_priority (w));
2056
2057#if EV_USE_INOTIFY
2058 infy_init (EV_A);
2059
2060 if (fs_fd >= 0)
2061 infy_add (EV_A_ w);
2062 else
2063#endif
2064 ev_timer_start (EV_A_ &w->timer);
2065
2066 ev_start (EV_A_ (W)w, 1);
2067}
2068
2069void
2070ev_stat_stop (EV_P_ ev_stat *w)
2071{
2072 clear_pending (EV_A_ (W)w);
2073 if (expect_false (!ev_is_active (w)))
2074 return;
2075
2076#if EV_USE_INOTIFY
2077 infy_del (EV_A_ w);
2078#endif
2079 ev_timer_stop (EV_A_ &w->timer);
2080
2081 ev_stop (EV_A_ (W)w);
2082}
2083#endif
2084
2085#if EV_IDLE_ENABLE
2086void
2087ev_idle_start (EV_P_ ev_idle *w)
2088{
2089 if (expect_false (ev_is_active (w)))
2090 return;
2091
2092 pri_adjust (EV_A_ (W)w);
2093
2094 {
2095 int active = ++idlecnt [ABSPRI (w)];
2096
2097 ++idleall;
2098 ev_start (EV_A_ (W)w, active);
2099
2100 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2101 idles [ABSPRI (w)][active - 1] = w;
2102 }
2103}
2104
2105void
2106ev_idle_stop (EV_P_ ev_idle *w)
2107{
2108 clear_pending (EV_A_ (W)w);
2109 if (expect_false (!ev_is_active (w)))
2110 return;
2111
2112 {
2113 int active = ((W)w)->active;
2114
2115 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2116 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2117
2118 ev_stop (EV_A_ (W)w);
2119 --idleall;
2120 }
2121}
2122#endif
2123
2124void
2125ev_prepare_start (EV_P_ ev_prepare *w)
2126{
2127 if (expect_false (ev_is_active (w)))
2128 return;
2129
2130 ev_start (EV_A_ (W)w, ++preparecnt);
2131 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2132 prepares [preparecnt - 1] = w;
2133}
2134
2135void
2136ev_prepare_stop (EV_P_ ev_prepare *w)
2137{
2138 clear_pending (EV_A_ (W)w);
2139 if (expect_false (!ev_is_active (w)))
2140 return;
2141
2142 {
2143 int active = ((W)w)->active;
2144 prepares [active - 1] = prepares [--preparecnt];
2145 ((W)prepares [active - 1])->active = active;
2146 }
2147
2148 ev_stop (EV_A_ (W)w);
2149}
2150
2151void
2152ev_check_start (EV_P_ ev_check *w)
2153{
2154 if (expect_false (ev_is_active (w)))
2155 return;
2156
2157 ev_start (EV_A_ (W)w, ++checkcnt);
2158 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2159 checks [checkcnt - 1] = w;
2160}
2161
2162void
2163ev_check_stop (EV_P_ ev_check *w)
2164{
2165 clear_pending (EV_A_ (W)w);
2166 if (expect_false (!ev_is_active (w)))
2167 return;
2168
2169 {
2170 int active = ((W)w)->active;
2171 checks [active - 1] = checks [--checkcnt];
2172 ((W)checks [active - 1])->active = active;
2173 }
2174
2175 ev_stop (EV_A_ (W)w);
2176}
2177
2178#if EV_EMBED_ENABLE
2179void noinline
2180ev_embed_sweep (EV_P_ ev_embed *w)
2181{
2182 ev_loop (w->loop, EVLOOP_NONBLOCK);
2183}
2184
2185static void
2186embed_cb (EV_P_ ev_io *io, int revents)
2187{
2188 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2189
2190 if (ev_cb (w))
2191 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2192 else
2193 ev_embed_sweep (loop, w);
2194}
2195
2196void
2197ev_embed_start (EV_P_ ev_embed *w)
2198{
2199 if (expect_false (ev_is_active (w)))
2200 return;
2201
2202 {
2203 struct ev_loop *loop = w->loop;
2204 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2205 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2206 }
2207
2208 ev_set_priority (&w->io, ev_priority (w));
2209 ev_io_start (EV_A_ &w->io);
2210
2211 ev_start (EV_A_ (W)w, 1);
2212}
2213
2214void
2215ev_embed_stop (EV_P_ ev_embed *w)
2216{
2217 clear_pending (EV_A_ (W)w);
2218 if (expect_false (!ev_is_active (w)))
2219 return;
2220
2221 ev_io_stop (EV_A_ &w->io);
2222
2223 ev_stop (EV_A_ (W)w);
2224}
2225#endif
2226
2227#if EV_FORK_ENABLE
2228void
2229ev_fork_start (EV_P_ ev_fork *w)
2230{
2231 if (expect_false (ev_is_active (w)))
2232 return;
2233
2234 ev_start (EV_A_ (W)w, ++forkcnt);
2235 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2236 forks [forkcnt - 1] = w;
2237}
2238
2239void
2240ev_fork_stop (EV_P_ ev_fork *w)
2241{
2242 clear_pending (EV_A_ (W)w);
2243 if (expect_false (!ev_is_active (w)))
2244 return;
2245
2246 {
2247 int active = ((W)w)->active;
2248 forks [active - 1] = forks [--forkcnt];
2249 ((W)forks [active - 1])->active = active;
2250 }
2251
2252 ev_stop (EV_A_ (W)w);
2253}
2254#endif
2255
1578/*****************************************************************************/ 2256/*****************************************************************************/
1579 2257
1580struct ev_once 2258struct ev_once
1581{ 2259{
1582 struct ev_io io; 2260 ev_io io;
1583 struct ev_timer to; 2261 ev_timer to;
1584 void (*cb)(int revents, void *arg); 2262 void (*cb)(int revents, void *arg);
1585 void *arg; 2263 void *arg;
1586}; 2264};
1587 2265
1588static void 2266static void
… …
1597 2275
1598 cb (revents, arg); 2276 cb (revents, arg);
1599} 2277}
1600 2278
1601static void 2279static void
1602once_cb_io (EV_P_ struct ev_io *w, int revents) 2280once_cb_io (EV_P_ ev_io *w, int revents)
1603{ 2281{
1604 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2282 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1605} 2283}
1606 2284
1607static void 2285static void
1608once_cb_to (EV_P_ struct ev_timer *w, int revents) 2286once_cb_to (EV_P_ ev_timer *w, int revents)
1609{ 2287{
1610 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2288 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1611} 2289}
1612 2290
1613void 2291void
1614ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2292ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1615{ 2293{
1616 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2294 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1617 2295
1618 if (!once) 2296 if (expect_false (!once))
2297 {
1619 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2298 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1620 else 2299 return;
1621 { 2300 }
2301
1622 once->cb = cb; 2302 once->cb = cb;
1623 once->arg = arg; 2303 once->arg = arg;
1624 2304
1625 ev_init (&once->io, once_cb_io); 2305 ev_init (&once->io, once_cb_io);
1626 if (fd >= 0) 2306 if (fd >= 0)
1627 { 2307 {
1628 ev_io_set (&once->io, fd, events); 2308 ev_io_set (&once->io, fd, events);
1629 ev_io_start (EV_A_ &once->io); 2309 ev_io_start (EV_A_ &once->io);
1630 } 2310 }
1631 2311
1632 ev_init (&once->to, once_cb_to); 2312 ev_init (&once->to, once_cb_to);
1633 if (timeout >= 0.) 2313 if (timeout >= 0.)
1634 { 2314 {
1635 ev_timer_set (&once->to, timeout, 0.); 2315 ev_timer_set (&once->to, timeout, 0.);
1636 ev_timer_start (EV_A_ &once->to); 2316 ev_timer_start (EV_A_ &once->to);
1637 }
1638 } 2317 }
1639} 2318}
1640 2319
1641#ifdef __cplusplus 2320#ifdef __cplusplus
1642} 2321}

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