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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 1.192 by root, Fri Dec 21 07:55:29 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) && !defined (__APPLE__) 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
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) && !defined (__APPLE__) 83# ifndef 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/**/
124 196
125#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
130#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
131# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
132# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
133#endif 205#endif
134 206
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
135#if EV_SELECT_IS_WINSOCKET 216#if EV_SELECT_IS_WINSOCKET
136# include <winsock.h> 217# include <winsock.h>
137#endif 218#endif
138 219
139/**/ 220/**/
140 221
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
141#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) */
142#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) */
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 */ 234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
145 235
146#ifdef EV_H
147# include EV_H
148#else
149# include "ev.h"
150#endif
151
152#if __GNUC__ >= 3 236#if __GNUC__ >= 4
153# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
154# define inline inline 238# define noinline __attribute__ ((noinline))
155#else 239#else
156# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
157# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
158#endif 245#endif
159 246
160#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
161#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
162 256
163#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
164#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
165 259
166#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 */
167 262
168typedef struct ev_watcher *W; 263typedef ev_watcher *W;
169typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
170typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
171 266
172static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
173 268
174#ifdef _WIN32 269#ifdef _WIN32
175# include "ev_win32.c" 270# include "ev_win32.c"
… …
177 272
178/*****************************************************************************/ 273/*****************************************************************************/
179 274
180static void (*syserr_cb)(const char *msg); 275static void (*syserr_cb)(const char *msg);
181 276
277void
182void ev_set_syserr_cb (void (*cb)(const char *msg)) 278ev_set_syserr_cb (void (*cb)(const char *msg))
183{ 279{
184 syserr_cb = cb; 280 syserr_cb = cb;
185} 281}
186 282
187static void 283static void noinline
188syserr (const char *msg) 284syserr (const char *msg)
189{ 285{
190 if (!msg) 286 if (!msg)
191 msg = "(libev) system error"; 287 msg = "(libev) system error";
192 288
… …
199 } 295 }
200} 296}
201 297
202static void *(*alloc)(void *ptr, long size); 298static void *(*alloc)(void *ptr, long size);
203 299
300void
204void ev_set_allocator (void *(*cb)(void *ptr, long size)) 301ev_set_allocator (void *(*cb)(void *ptr, long size))
205{ 302{
206 alloc = cb; 303 alloc = cb;
207} 304}
208 305
209static void * 306inline_speed void *
210ev_realloc (void *ptr, long size) 307ev_realloc (void *ptr, long size)
211{ 308{
212 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
213 310
214 if (!ptr && size) 311 if (!ptr && size)
… …
238typedef struct 335typedef struct
239{ 336{
240 W w; 337 W w;
241 int events; 338 int events;
242} ANPENDING; 339} ANPENDING;
340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
243 347
244#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
245 349
246 struct ev_loop 350 struct ev_loop
247 { 351 {
… …
251 #include "ev_vars.h" 355 #include "ev_vars.h"
252 #undef VAR 356 #undef VAR
253 }; 357 };
254 #include "ev_wrap.h" 358 #include "ev_wrap.h"
255 359
256 struct ev_loop default_loop_struct; 360 static struct ev_loop default_loop_struct;
257 static struct ev_loop *default_loop; 361 struct ev_loop *ev_default_loop_ptr;
258 362
259#else 363#else
260 364
261 ev_tstamp ev_rt_now; 365 ev_tstamp ev_rt_now;
262 #define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
263 #include "ev_vars.h" 367 #include "ev_vars.h"
264 #undef VAR 368 #undef VAR
265 369
266 static int default_loop; 370 static int ev_default_loop_ptr;
267 371
268#endif 372#endif
269 373
270/*****************************************************************************/ 374/*****************************************************************************/
271 375
… …
281 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
282 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
283#endif 387#endif
284} 388}
285 389
286inline ev_tstamp 390ev_tstamp inline_size
287get_clock (void) 391get_clock (void)
288{ 392{
289#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
290 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
291 { 395 {
… …
304{ 408{
305 return ev_rt_now; 409 return ev_rt_now;
306} 410}
307#endif 411#endif
308 412
309#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}
310 440
311#define array_needsize(type,base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
312 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
313 { \ 443 { \
314 int newcnt = cur; \ 444 int ocur_ = (cur); \
315 do \ 445 (base) = (type *)array_realloc \
316 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
317 newcnt = array_roundsize (type, newcnt << 1); \ 447 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 } 448 }
325 449
450#if 0
326#define array_slim(type,stem) \ 451#define array_slim(type,stem) \
327 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
328 { \ 453 { \
329 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
330 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
331 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
332 } 457 }
458#endif
333 459
334#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
335 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;
336 462
337/*****************************************************************************/ 463/*****************************************************************************/
338 464
339static 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
340anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
341{ 495{
342 while (count--) 496 while (count--)
343 { 497 {
344 base->head = 0; 498 base->head = 0;
… …
347 501
348 ++base; 502 ++base;
349 } 503 }
350} 504}
351 505
352void 506void 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) 507fd_event (EV_P_ int fd, int revents)
380{ 508{
381 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
382 struct ev_io *w; 510 ev_io *w;
383 511
384 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)
385 { 513 {
386 int ev = w->events & revents; 514 int ev = w->events & revents;
387 515
388 if (ev) 516 if (ev)
389 ev_feed_event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
… …
391} 519}
392 520
393void 521void
394ev_feed_fd_event (EV_P_ int fd, int revents) 522ev_feed_fd_event (EV_P_ int fd, int revents)
395{ 523{
524 if (fd >= 0 && fd < anfdmax)
396 fd_event (EV_A_ fd, revents); 525 fd_event (EV_A_ fd, revents);
397} 526}
398 527
399/*****************************************************************************/ 528void inline_size
400
401static void
402fd_reify (EV_P) 529fd_reify (EV_P)
403{ 530{
404 int i; 531 int i;
405 532
406 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
407 { 534 {
408 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
409 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
410 struct ev_io *w; 537 ev_io *w;
411 538
412 int events = 0; 539 unsigned char events = 0;
413 540
414 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)
415 events |= w->events; 542 events |= (unsigned char)w->events;
416 543
417#if EV_SELECT_IS_WINSOCKET 544#if EV_SELECT_IS_WINSOCKET
418 if (events) 545 if (events)
419 { 546 {
420 unsigned long argp; 547 unsigned long argp;
421 anfd->handle = _get_osfhandle (fd); 548 anfd->handle = _get_osfhandle (fd);
422 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));
423 } 550 }
424#endif 551#endif
425 552
553 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
426 anfd->reify = 0; 557 anfd->reify = 0;
427
428 method_modify (EV_A_ fd, anfd->events, events);
429 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 }
430 } 563 }
431 564
432 fdchangecnt = 0; 565 fdchangecnt = 0;
433} 566}
434 567
435static void 568void inline_size
436fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
437{ 570{
438 if (anfds [fd].reify) 571 unsigned char reify = anfds [fd].reify;
439 return;
440
441 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
442 573
574 if (expect_true (!reify))
575 {
443 ++fdchangecnt; 576 ++fdchangecnt;
444 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
445 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
446} 580}
447 581
448static void 582void inline_speed
449fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
450{ 584{
451 struct ev_io *w; 585 ev_io *w;
452 586
453 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
454 { 588 {
455 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
456 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);
457 } 591 }
458} 592}
459 593
460static int 594int inline_size
461fd_valid (int fd) 595fd_valid (int fd)
462{ 596{
463#ifdef _WIN32 597#ifdef _WIN32
464 return _get_osfhandle (fd) != -1; 598 return _get_osfhandle (fd) != -1;
465#else 599#else
466 return fcntl (fd, F_GETFD) != -1; 600 return fcntl (fd, F_GETFD) != -1;
467#endif 601#endif
468} 602}
469 603
470/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
471static void 605static void noinline
472fd_ebadf (EV_P) 606fd_ebadf (EV_P)
473{ 607{
474 int fd; 608 int fd;
475 609
476 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
… …
478 if (!fd_valid (fd) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
479 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
480} 614}
481 615
482/* 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 */
483static void 617static void noinline
484fd_enomem (EV_P) 618fd_enomem (EV_P)
485{ 619{
486 int fd; 620 int fd;
487 621
488 for (fd = anfdmax; fd--; ) 622 for (fd = anfdmax; fd--; )
… …
491 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
492 return; 626 return;
493 } 627 }
494} 628}
495 629
496/* 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 */
497static void 631static void noinline
498fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
499{ 633{
500 int fd; 634 int fd;
501 635
502 /* this should be highly optimised to not do anything but set a flag */
503 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
504 if (anfds [fd].events) 637 if (anfds [fd].events)
505 { 638 {
506 anfds [fd].events = 0; 639 anfds [fd].events = 0;
507 fd_change (EV_A_ fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
508 } 641 }
509} 642}
510 643
511/*****************************************************************************/ 644/*****************************************************************************/
512 645
513static void 646void inline_speed
514upheap (WT *heap, int k) 647upheap (WT *heap, int k)
515{ 648{
516 WT w = heap [k]; 649 WT w = heap [k];
517 650
518 while (k && heap [k >> 1]->at > w->at) 651 while (k)
519 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
520 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
521 ((W)heap [k])->active = k + 1; 659 ((W)heap [k])->active = k + 1;
522 k >>= 1; 660 k = p;
523 } 661 }
524 662
525 heap [k] = w; 663 heap [k] = w;
526 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
527
528} 665}
529 666
530static void 667void inline_speed
531downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
532{ 669{
533 WT w = heap [k]; 670 WT w = heap [k];
534 671
535 while (k < (N >> 1)) 672 for (;;)
536 { 673 {
537 int j = k << 1; 674 int c = (k << 1) + 1;
538 675
539 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
540 ++j;
541
542 if (w->at <= heap [j]->at)
543 break; 677 break;
544 678
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
545 heap [k] = heap [j]; 685 heap [k] = heap [c];
546 ((W)heap [k])->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
547 k = j; 688 k = c;
548 } 689 }
549 690
550 heap [k] = w; 691 heap [k] = w;
551 ((W)heap [k])->active = k + 1; 692 ((W)heap [k])->active = k + 1;
552} 693}
553 694
554inline void 695void inline_size
555adjustheap (WT *heap, int N, int k) 696adjustheap (WT *heap, int N, int k)
556{ 697{
557 upheap (heap, k); 698 upheap (heap, k);
558 downheap (heap, N, k); 699 downheap (heap, N, k);
559} 700}
… …
569static ANSIG *signals; 710static ANSIG *signals;
570static int signalmax; 711static int signalmax;
571 712
572static int sigpipe [2]; 713static int sigpipe [2];
573static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
574static struct ev_io sigev; 715static ev_io sigev;
575 716
576static void 717void inline_size
577signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
578{ 719{
579 while (count--) 720 while (count--)
580 { 721 {
581 base->head = 0; 722 base->head = 0;
… …
601 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
602 errno = old_errno; 743 errno = old_errno;
603 } 744 }
604} 745}
605 746
606void 747void noinline
607ev_feed_signal_event (EV_P_ int signum) 748ev_feed_signal_event (EV_P_ int signum)
608{ 749{
609 WL w; 750 WL w;
610 751
611#if EV_MULTIPLICITY 752#if EV_MULTIPLICITY
612 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));
613#endif 754#endif
614 755
615 --signum; 756 --signum;
616 757
617 if (signum < 0 || signum >= signalmax) 758 if (signum < 0 || signum >= signalmax)
… …
622 for (w = signals [signum].head; w; w = w->next) 763 for (w = signals [signum].head; w; w = w->next)
623 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
624} 765}
625 766
626static void 767static void
627sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
628{ 769{
629 int signum; 770 int signum;
630 771
631 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
632 gotsig = 0; 773 gotsig = 0;
… …
634 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
635 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
636 ev_feed_signal_event (EV_A_ signum + 1); 777 ev_feed_signal_event (EV_A_ signum + 1);
637} 778}
638 779
639inline void 780void inline_speed
640fd_intern (int fd) 781fd_intern (int fd)
641{ 782{
642#ifdef _WIN32 783#ifdef _WIN32
643 int arg = 1; 784 int arg = 1;
644 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
646 fcntl (fd, F_SETFD, FD_CLOEXEC); 787 fcntl (fd, F_SETFD, FD_CLOEXEC);
647 fcntl (fd, F_SETFL, O_NONBLOCK); 788 fcntl (fd, F_SETFL, O_NONBLOCK);
648#endif 789#endif
649} 790}
650 791
651static void 792static void noinline
652siginit (EV_P) 793siginit (EV_P)
653{ 794{
654 fd_intern (sigpipe [0]); 795 fd_intern (sigpipe [0]);
655 fd_intern (sigpipe [1]); 796 fd_intern (sigpipe [1]);
656 797
… …
659 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
660} 801}
661 802
662/*****************************************************************************/ 803/*****************************************************************************/
663 804
664static struct ev_child *childs [PID_HASHSIZE]; 805static WL childs [EV_PID_HASHSIZE];
665 806
666#ifndef _WIN32 807#ifndef _WIN32
667 808
668static 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}
669 825
670#ifndef WCONTINUED 826#ifndef WCONTINUED
671# define WCONTINUED 0 827# define WCONTINUED 0
672#endif 828#endif
673 829
674static void 830static 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) 831childcb (EV_P_ ev_signal *sw, int revents)
691{ 832{
692 int pid, status; 833 int pid, status;
693 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
694 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
695 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
696 /* 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 */
697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
698 845
699 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
700 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 */
701 }
702} 849}
703 850
704#endif 851#endif
705 852
706/*****************************************************************************/ 853/*****************************************************************************/
707 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
708#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
709# include "ev_kqueue.c" 859# include "ev_kqueue.c"
710#endif 860#endif
711#if EV_USE_EPOLL 861#if EV_USE_EPOLL
712# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
729{ 879{
730 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
731} 881}
732 882
733/* 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 */
734static int 884int inline_size
735enable_secure (void) 885enable_secure (void)
736{ 886{
737#ifdef _WIN32 887#ifdef _WIN32
738 return 0; 888 return 0;
739#else 889#else
740 return getuid () != geteuid () 890 return getuid () != geteuid ()
741 || getgid () != getegid (); 891 || getgid () != getegid ();
742#endif 892#endif
743} 893}
744 894
745int 895unsigned int
746ev_method (EV_P) 896ev_supported_backends (void)
747{ 897{
748 return method; 898 unsigned int flags = 0;
749}
750 899
751static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
752loop_init (EV_P_ int methods) 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)
753{ 911{
754 if (!method) 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 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
931 return 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
948loop_init (EV_P_ unsigned int flags)
949{
950 if (!backend)
755 { 951 {
756#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
757 { 953 {
758 struct timespec ts; 954 struct timespec ts;
759 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
764 ev_rt_now = ev_time (); 960 ev_rt_now = ev_time ();
765 mn_now = get_clock (); 961 mn_now = get_clock ();
766 now_floor = mn_now; 962 now_floor = mn_now;
767 rtmn_diff = ev_rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
768 964
769 if (methods == EVMETHOD_AUTO) 965 /* pid check not overridable via env */
770 if (!enable_secure () && getenv ("LIBEV_METHODS")) 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"))
771 methods = atoi (getenv ("LIBEV_METHODS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
772 else
773 methods = EVMETHOD_ANY;
774 975
775 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
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
776#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
777 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
778#endif 990#endif
779#if EV_USE_EPOLL 991#if EV_USE_EPOLL
780 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
781#endif 993#endif
782#if EV_USE_POLL 994#if EV_USE_POLL
783 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
784#endif 996#endif
785#if EV_USE_SELECT 997#if EV_USE_SELECT
786 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
787#endif 999#endif
788 1000
789 ev_init (&sigev, sigcb); 1001 ev_init (&sigev, sigcb);
790 ev_set_priority (&sigev, EV_MAXPRI); 1002 ev_set_priority (&sigev, EV_MAXPRI);
791 } 1003 }
792} 1004}
793 1005
794void 1006static void noinline
795loop_destroy (EV_P) 1007loop_destroy (EV_P)
796{ 1008{
797 int i; 1009 int i;
798 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
799#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
800 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
801#endif 1024#endif
802#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
803 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
804#endif 1027#endif
805#if EV_USE_POLL 1028#if EV_USE_POLL
806 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
807#endif 1030#endif
808#if EV_USE_SELECT 1031#if EV_USE_SELECT
809 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
810#endif 1033#endif
811 1034
812 for (i = NUMPRI; i--; ) 1035 for (i = NUMPRI; i--; )
1036 {
813 array_free (pending, [i]); 1037 array_free (pending, [i]);
1038#if EV_IDLE_ENABLE
1039 array_free (idle, [i]);
1040#endif
1041 }
1042
1043 ev_free (anfds); anfdmax = 0;
814 1044
815 /* have to use the microsoft-never-gets-it-right macro */ 1045 /* have to use the microsoft-never-gets-it-right macro */
816 array_free (fdchange, EMPTY); 1046 array_free (fdchange, EMPTY);
817 array_free (timer, EMPTY); 1047 array_free (timer, EMPTY);
818#if EV_PERIODICS 1048#if EV_PERIODIC_ENABLE
819 array_free (periodic, EMPTY); 1049 array_free (periodic, EMPTY);
820#endif 1050#endif
1051#if EV_FORK_ENABLE
821 array_free (idle, EMPTY); 1052 array_free (fork, EMPTY);
1053#endif
822 array_free (prepare, EMPTY); 1054 array_free (prepare, EMPTY);
823 array_free (check, EMPTY); 1055 array_free (check, EMPTY);
824 1056
825 method = 0; 1057 backend = 0;
826} 1058}
827 1059
828static void 1060void inline_size infy_fork (EV_P);
1061
1062void inline_size
829loop_fork (EV_P) 1063loop_fork (EV_P)
830{ 1064{
1065#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif
1068#if EV_USE_KQUEUE
1069 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1070#endif
831#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
832 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1072 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
833#endif 1073#endif
834#if EV_USE_KQUEUE 1074#if EV_USE_INOTIFY
835 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1075 infy_fork (EV_A);
836#endif 1076#endif
837 1077
838 if (ev_is_active (&sigev)) 1078 if (ev_is_active (&sigev))
839 { 1079 {
840 /* default loop */ 1080 /* default loop */
… …
853 postfork = 0; 1093 postfork = 0;
854} 1094}
855 1095
856#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
857struct ev_loop * 1097struct ev_loop *
858ev_loop_new (int methods) 1098ev_loop_new (unsigned int flags)
859{ 1099{
860 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
861 1101
862 memset (loop, 0, sizeof (struct ev_loop)); 1102 memset (loop, 0, sizeof (struct ev_loop));
863 1103
864 loop_init (EV_A_ methods); 1104 loop_init (EV_A_ flags);
865 1105
866 if (ev_method (EV_A)) 1106 if (ev_backend (EV_A))
867 return loop; 1107 return loop;
868 1108
869 return 0; 1109 return 0;
870} 1110}
871 1111
… …
884 1124
885#endif 1125#endif
886 1126
887#if EV_MULTIPLICITY 1127#if EV_MULTIPLICITY
888struct ev_loop * 1128struct ev_loop *
1129ev_default_loop_init (unsigned int flags)
889#else 1130#else
890int 1131int
1132ev_default_loop (unsigned int flags)
891#endif 1133#endif
892ev_default_loop (int methods)
893{ 1134{
894 if (sigpipe [0] == sigpipe [1]) 1135 if (sigpipe [0] == sigpipe [1])
895 if (pipe (sigpipe)) 1136 if (pipe (sigpipe))
896 return 0; 1137 return 0;
897 1138
898 if (!default_loop) 1139 if (!ev_default_loop_ptr)
899 { 1140 {
900#if EV_MULTIPLICITY 1141#if EV_MULTIPLICITY
901 struct ev_loop *loop = default_loop = &default_loop_struct; 1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
902#else 1143#else
903 default_loop = 1; 1144 ev_default_loop_ptr = 1;
904#endif 1145#endif
905 1146
906 loop_init (EV_A_ methods); 1147 loop_init (EV_A_ flags);
907 1148
908 if (ev_method (EV_A)) 1149 if (ev_backend (EV_A))
909 { 1150 {
910 siginit (EV_A); 1151 siginit (EV_A);
911 1152
912#ifndef _WIN32 1153#ifndef _WIN32
913 ev_signal_init (&childev, childcb, SIGCHLD); 1154 ev_signal_init (&childev, childcb, SIGCHLD);
… …
915 ev_signal_start (EV_A_ &childev); 1156 ev_signal_start (EV_A_ &childev);
916 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1157 ev_unref (EV_A); /* child watcher should not keep loop alive */
917#endif 1158#endif
918 } 1159 }
919 else 1160 else
920 default_loop = 0; 1161 ev_default_loop_ptr = 0;
921 } 1162 }
922 1163
923 return default_loop; 1164 return ev_default_loop_ptr;
924} 1165}
925 1166
926void 1167void
927ev_default_destroy (void) 1168ev_default_destroy (void)
928{ 1169{
929#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
930 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
931#endif 1172#endif
932 1173
933#ifndef _WIN32 1174#ifndef _WIN32
934 ev_ref (EV_A); /* child watcher */ 1175 ev_ref (EV_A); /* child watcher */
935 ev_signal_stop (EV_A_ &childev); 1176 ev_signal_stop (EV_A_ &childev);
… …
946 1187
947void 1188void
948ev_default_fork (void) 1189ev_default_fork (void)
949{ 1190{
950#if EV_MULTIPLICITY 1191#if EV_MULTIPLICITY
951 struct ev_loop *loop = default_loop; 1192 struct ev_loop *loop = ev_default_loop_ptr;
952#endif 1193#endif
953 1194
954 if (method) 1195 if (backend)
955 postfork = 1; 1196 postfork = 1;
956} 1197}
957 1198
958/*****************************************************************************/ 1199/*****************************************************************************/
959 1200
960static int 1201void
961any_pending (EV_P) 1202ev_invoke (EV_P_ void *w, int revents)
962{ 1203{
963 int pri; 1204 EV_CB_INVOKE ((W)w, revents);
964
965 for (pri = NUMPRI; pri--; )
966 if (pendingcnt [pri])
967 return 1;
968
969 return 0;
970} 1205}
971 1206
972static void 1207void inline_speed
973call_pending (EV_P) 1208call_pending (EV_P)
974{ 1209{
975 int pri; 1210 int pri;
976 1211
977 for (pri = NUMPRI; pri--; ) 1212 for (pri = NUMPRI; pri--; )
978 while (pendingcnt [pri]) 1213 while (pendingcnt [pri])
979 { 1214 {
980 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
981 1216
982 if (p->w) 1217 if (expect_true (p->w))
983 { 1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
984 p->w->pending = 0; 1221 p->w->pending = 0;
985 EV_CB_INVOKE (p->w, p->events); 1222 EV_CB_INVOKE (p->w, p->events);
986 } 1223 }
987 } 1224 }
988} 1225}
989 1226
990static void 1227void inline_size
991timers_reify (EV_P) 1228timers_reify (EV_P)
992{ 1229{
993 while (timercnt && ((WT)timers [0])->at <= mn_now) 1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
994 { 1231 {
995 struct ev_timer *w = timers [0]; 1232 ev_timer *w = (ev_timer *)timers [0];
996 1233
997 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
998 1235
999 /* first reschedule or stop timer */ 1236 /* first reschedule or stop timer */
1000 if (w->repeat) 1237 if (w->repeat)
1001 { 1238 {
1002 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1003 1240
1004 ((WT)w)->at += w->repeat; 1241 ((WT)w)->at += w->repeat;
1005 if (((WT)w)->at < mn_now) 1242 if (((WT)w)->at < mn_now)
1006 ((WT)w)->at = mn_now; 1243 ((WT)w)->at = mn_now;
1007 1244
1008 downheap ((WT *)timers, timercnt, 0); 1245 downheap (timers, timercnt, 0);
1009 } 1246 }
1010 else 1247 else
1011 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1012 1249
1013 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1014 } 1251 }
1015} 1252}
1016 1253
1017#if EV_PERIODICS 1254#if EV_PERIODIC_ENABLE
1018static void 1255void inline_size
1019periodics_reify (EV_P) 1256periodics_reify (EV_P)
1020{ 1257{
1021 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1022 { 1259 {
1023 struct ev_periodic *w = periodics [0]; 1260 ev_periodic *w = (ev_periodic *)periodics [0];
1024 1261
1025 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1026 1263
1027 /* first reschedule or stop timer */ 1264 /* first reschedule or stop timer */
1028 if (w->reschedule_cb) 1265 if (w->reschedule_cb)
1029 { 1266 {
1030 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1267 ((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)); 1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1033 downheap ((WT *)periodics, periodiccnt, 0); 1269 downheap (periodics, periodiccnt, 0);
1034 } 1270 }
1035 else if (w->interval) 1271 else if (w->interval)
1036 { 1272 {
1037 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 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)); 1275 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); 1276 downheap (periodics, periodiccnt, 0);
1040 } 1277 }
1041 else 1278 else
1042 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1043 1280
1044 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1045 } 1282 }
1046} 1283}
1047 1284
1048static void 1285static void noinline
1049periodics_reschedule (EV_P) 1286periodics_reschedule (EV_P)
1050{ 1287{
1051 int i; 1288 int i;
1052 1289
1053 /* adjust periodics after time jump */ 1290 /* adjust periodics after time jump */
1054 for (i = 0; i < periodiccnt; ++i) 1291 for (i = 0; i < periodiccnt; ++i)
1055 { 1292 {
1056 struct ev_periodic *w = periodics [i]; 1293 ev_periodic *w = (ev_periodic *)periodics [i];
1057 1294
1058 if (w->reschedule_cb) 1295 if (w->reschedule_cb)
1059 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1060 else if (w->interval) 1297 else if (w->interval)
1061 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1062 } 1299 }
1063 1300
1064 /* now rebuild the heap */ 1301 /* now rebuild the heap */
1065 for (i = periodiccnt >> 1; i--; ) 1302 for (i = periodiccnt >> 1; i--; )
1066 downheap ((WT *)periodics, periodiccnt, i); 1303 downheap (periodics, periodiccnt, i);
1067} 1304}
1068#endif 1305#endif
1069 1306
1070inline int 1307#if EV_IDLE_ENABLE
1071time_update_monotonic (EV_P) 1308void inline_size
1309idle_reify (EV_P)
1072{ 1310{
1311 if (expect_false (idleall))
1312 {
1313 int pri;
1314
1315 for (pri = NUMPRI; pri--; )
1316 {
1317 if (pendingcnt [pri])
1318 break;
1319
1320 if (idlecnt [pri])
1321 {
1322 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1323 break;
1324 }
1325 }
1326 }
1327}
1328#endif
1329
1330void inline_speed
1331time_update (EV_P_ ev_tstamp max_block)
1332{
1333 int i;
1334
1335#if EV_USE_MONOTONIC
1336 if (expect_true (have_monotonic))
1337 {
1338 ev_tstamp odiff = rtmn_diff;
1339
1073 mn_now = get_clock (); 1340 mn_now = get_clock ();
1074 1341
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1343 /* interpolate in the meantime */
1075 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1344 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1076 { 1345 {
1077 ev_rt_now = rtmn_diff + mn_now; 1346 ev_rt_now = rtmn_diff + mn_now;
1078 return 0; 1347 return;
1079 } 1348 }
1080 else 1349
1081 {
1082 now_floor = mn_now; 1350 now_floor = mn_now;
1083 ev_rt_now = ev_time (); 1351 ev_rt_now = ev_time ();
1084 return 1;
1085 }
1086}
1087 1352
1088static void 1353 /* loop a few times, before making important decisions.
1089time_update (EV_P) 1354 * on the choice of "4": one iteration isn't enough,
1090{ 1355 * in case we get preempted during the calls to
1091 int i; 1356 * ev_time and get_clock. a second call is almost guaranteed
1092 1357 * to succeed in that case, though. and looping a few more times
1093#if EV_USE_MONOTONIC 1358 * doesn't hurt either as we only do this on time-jumps or
1094 if (expect_true (have_monotonic)) 1359 * in the unlikely event of having been preempted here.
1095 { 1360 */
1096 if (time_update_monotonic (EV_A)) 1361 for (i = 4; --i; )
1097 { 1362 {
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; 1363 rtmn_diff = ev_rt_now - mn_now;
1103 1364
1104 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1105 return; /* all is well */ 1366 return; /* all is well */
1106 1367
1107 ev_rt_now = ev_time (); 1368 ev_rt_now = ev_time ();
1108 mn_now = get_clock (); 1369 mn_now = get_clock ();
1109 now_floor = mn_now; 1370 now_floor = mn_now;
1110 } 1371 }
1111 1372
1112# if EV_PERIODICS 1373# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A);
1375# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 }
1379 else
1380#endif
1381 {
1382 ev_rt_now = ev_time ();
1383
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 {
1386#if EV_PERIODIC_ENABLE
1113 periodics_reschedule (EV_A); 1387 periodics_reschedule (EV_A);
1114# endif 1388#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 */ 1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1131 for (i = 0; i < timercnt; ++i) 1390 for (i = 0; i < timercnt; ++i)
1132 ((WT)timers [i])->at += ev_rt_now - mn_now; 1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
1133 } 1392 }
1134 1393
1135 mn_now = ev_rt_now; 1394 mn_now = ev_rt_now;
… …
1151static int loop_done; 1410static int loop_done;
1152 1411
1153void 1412void
1154ev_loop (EV_P_ int flags) 1413ev_loop (EV_P_ int flags)
1155{ 1414{
1156 double block;
1157 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1416 ? EVUNLOOP_ONE
1417 : EVUNLOOP_CANCEL;
1418
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1158 1420
1159 do 1421 do
1160 { 1422 {
1423#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid))
1426 {
1427 curpid = getpid ();
1428 postfork = 1;
1429 }
1430#endif
1431
1432#if EV_FORK_ENABLE
1433 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork))
1435 if (forkcnt)
1436 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A);
1439 }
1440#endif
1441
1161 /* queue check watchers (and execute them) */ 1442 /* queue prepare watchers (and execute them) */
1162 if (expect_false (preparecnt)) 1443 if (expect_false (preparecnt))
1163 { 1444 {
1164 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1165 call_pending (EV_A); 1446 call_pending (EV_A);
1166 } 1447 }
1167 1448
1449 if (expect_false (!activecnt))
1450 break;
1451
1168 /* we might have forked, so reify kernel state if necessary */ 1452 /* we might have forked, so reify kernel state if necessary */
1169 if (expect_false (postfork)) 1453 if (expect_false (postfork))
1170 loop_fork (EV_A); 1454 loop_fork (EV_A);
1171 1455
1172 /* update fd-related kernel structures */ 1456 /* update fd-related kernel structures */
1173 fd_reify (EV_A); 1457 fd_reify (EV_A);
1174 1458
1175 /* calculate blocking time */ 1459 /* calculate blocking time */
1460 {
1461 ev_tstamp block;
1176 1462
1177 /* we only need this for !monotonic clock or timers, but as we basically 1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1178 always have timers, we just calculate it always */ 1464 block = 0.; /* do not block at all */
1179#if EV_USE_MONOTONIC
1180 if (expect_true (have_monotonic))
1181 time_update_monotonic (EV_A);
1182 else 1465 else
1183#endif
1184 { 1466 {
1185 ev_rt_now = ev_time (); 1467 /* update time to cancel out callback processing overhead */
1186 mn_now = ev_rt_now; 1468 time_update (EV_A_ 1e100);
1187 }
1188 1469
1189 if (flags & EVLOOP_NONBLOCK || idlecnt)
1190 block = 0.;
1191 else
1192 {
1193 block = MAX_BLOCKTIME; 1470 block = MAX_BLOCKTIME;
1194 1471
1195 if (timercnt) 1472 if (timercnt)
1196 { 1473 {
1197 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1198 if (block > to) block = to; 1475 if (block > to) block = to;
1199 } 1476 }
1200 1477
1201#if EV_PERIODICS 1478#if EV_PERIODIC_ENABLE
1202 if (periodiccnt) 1479 if (periodiccnt)
1203 { 1480 {
1204 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1205 if (block > to) block = to; 1482 if (block > to) block = to;
1206 } 1483 }
1207#endif 1484#endif
1208 1485
1209 if (block < 0.) block = 0.; 1486 if (expect_false (block < 0.)) block = 0.;
1210 } 1487 }
1211 1488
1489 ++loop_count;
1212 method_poll (EV_A_ block); 1490 backend_poll (EV_A_ block);
1213 1491
1214 /* update ev_rt_now, do magic */ 1492 /* update ev_rt_now, do magic */
1215 time_update (EV_A); 1493 time_update (EV_A_ block);
1494 }
1216 1495
1217 /* queue pending timers and reschedule them */ 1496 /* queue pending timers and reschedule them */
1218 timers_reify (EV_A); /* relative timers called last */ 1497 timers_reify (EV_A); /* relative timers called last */
1219#if EV_PERIODICS 1498#if EV_PERIODIC_ENABLE
1220 periodics_reify (EV_A); /* absolute timers called first */ 1499 periodics_reify (EV_A); /* absolute timers called first */
1221#endif 1500#endif
1222 1501
1502#if EV_IDLE_ENABLE
1223 /* queue idle watchers unless io or timers are pending */ 1503 /* queue idle watchers unless other events are pending */
1224 if (idlecnt && !any_pending (EV_A)) 1504 idle_reify (EV_A);
1225 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1505#endif
1226 1506
1227 /* queue check watchers, to be executed first */ 1507 /* queue check watchers, to be executed first */
1228 if (checkcnt) 1508 if (expect_false (checkcnt))
1229 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1230 1510
1231 call_pending (EV_A); 1511 call_pending (EV_A);
1512
1232 } 1513 }
1233 while (activecnt && !loop_done); 1514 while (expect_true (activecnt && !loop_done));
1234 1515
1235 if (loop_done != 2) 1516 if (loop_done == EVUNLOOP_ONE)
1236 loop_done = 0; 1517 loop_done = EVUNLOOP_CANCEL;
1237} 1518}
1238 1519
1239void 1520void
1240ev_unloop (EV_P_ int how) 1521ev_unloop (EV_P_ int how)
1241{ 1522{
1242 loop_done = how; 1523 loop_done = how;
1243} 1524}
1244 1525
1245/*****************************************************************************/ 1526/*****************************************************************************/
1246 1527
1247inline void 1528void inline_size
1248wlist_add (WL *head, WL elem) 1529wlist_add (WL *head, WL elem)
1249{ 1530{
1250 elem->next = *head; 1531 elem->next = *head;
1251 *head = elem; 1532 *head = elem;
1252} 1533}
1253 1534
1254inline void 1535void inline_size
1255wlist_del (WL *head, WL elem) 1536wlist_del (WL *head, WL elem)
1256{ 1537{
1257 while (*head) 1538 while (*head)
1258 { 1539 {
1259 if (*head == elem) 1540 if (*head == elem)
… …
1264 1545
1265 head = &(*head)->next; 1546 head = &(*head)->next;
1266 } 1547 }
1267} 1548}
1268 1549
1269inline void 1550void inline_speed
1270ev_clear_pending (EV_P_ W w) 1551clear_pending (EV_P_ W w)
1271{ 1552{
1272 if (w->pending) 1553 if (w->pending)
1273 { 1554 {
1274 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1555 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1275 w->pending = 0; 1556 w->pending = 0;
1276 } 1557 }
1277} 1558}
1278 1559
1279inline void 1560int
1561ev_clear_pending (EV_P_ void *w)
1562{
1563 W w_ = (W)w;
1564 int pending = w_->pending;
1565
1566 if (expect_true (pending))
1567 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1569 w_->pending = 0;
1570 p->w = 0;
1571 return p->events;
1572 }
1573 else
1574 return 0;
1575}
1576
1577void inline_size
1578pri_adjust (EV_P_ W w)
1579{
1580 int pri = w->priority;
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri;
1584}
1585
1586void inline_speed
1280ev_start (EV_P_ W w, int active) 1587ev_start (EV_P_ W w, int active)
1281{ 1588{
1282 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1589 pri_adjust (EV_A_ w);
1283 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1284
1285 w->active = active; 1590 w->active = active;
1286 ev_ref (EV_A); 1591 ev_ref (EV_A);
1287} 1592}
1288 1593
1289inline void 1594void inline_size
1290ev_stop (EV_P_ W w) 1595ev_stop (EV_P_ W w)
1291{ 1596{
1292 ev_unref (EV_A); 1597 ev_unref (EV_A);
1293 w->active = 0; 1598 w->active = 0;
1294} 1599}
1295 1600
1296/*****************************************************************************/ 1601/*****************************************************************************/
1297 1602
1298void 1603void noinline
1299ev_io_start (EV_P_ struct ev_io *w) 1604ev_io_start (EV_P_ ev_io *w)
1300{ 1605{
1301 int fd = w->fd; 1606 int fd = w->fd;
1302 1607
1303 if (ev_is_active (w)) 1608 if (expect_false (ev_is_active (w)))
1304 return; 1609 return;
1305 1610
1306 assert (("ev_io_start called with negative fd", fd >= 0)); 1611 assert (("ev_io_start called with negative fd", fd >= 0));
1307 1612
1308 ev_start (EV_A_ (W)w, 1); 1613 ev_start (EV_A_ (W)w, 1);
1309 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1310 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1615 wlist_add (&anfds[fd].head, (WL)w);
1311 1616
1312 fd_change (EV_A_ fd); 1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET;
1313} 1619}
1314 1620
1315void 1621void noinline
1316ev_io_stop (EV_P_ struct ev_io *w) 1622ev_io_stop (EV_P_ ev_io *w)
1317{ 1623{
1318 ev_clear_pending (EV_A_ (W)w); 1624 clear_pending (EV_A_ (W)w);
1319 if (!ev_is_active (w)) 1625 if (expect_false (!ev_is_active (w)))
1320 return; 1626 return;
1321 1627
1322 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1323 1629
1324 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1630 wlist_del (&anfds[w->fd].head, (WL)w);
1325 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1326 1632
1327 fd_change (EV_A_ w->fd); 1633 fd_change (EV_A_ w->fd, 1);
1328} 1634}
1329 1635
1330void 1636void noinline
1331ev_timer_start (EV_P_ struct ev_timer *w) 1637ev_timer_start (EV_P_ ev_timer *w)
1332{ 1638{
1333 if (ev_is_active (w)) 1639 if (expect_false (ev_is_active (w)))
1334 return; 1640 return;
1335 1641
1336 ((WT)w)->at += mn_now; 1642 ((WT)w)->at += mn_now;
1337 1643
1338 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1339 1645
1340 ev_start (EV_A_ (W)w, ++timercnt); 1646 ev_start (EV_A_ (W)w, ++timercnt);
1341 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1342 timers [timercnt - 1] = w; 1648 timers [timercnt - 1] = (WT)w;
1343 upheap ((WT *)timers, timercnt - 1); 1649 upheap (timers, timercnt - 1);
1344 1650
1345 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1346} 1652}
1347 1653
1348void 1654void noinline
1349ev_timer_stop (EV_P_ struct ev_timer *w) 1655ev_timer_stop (EV_P_ ev_timer *w)
1350{ 1656{
1351 ev_clear_pending (EV_A_ (W)w); 1657 clear_pending (EV_A_ (W)w);
1352 if (!ev_is_active (w)) 1658 if (expect_false (!ev_is_active (w)))
1353 return; 1659 return;
1354 1660
1355 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1356 1662
1357 if (((W)w)->active < timercnt--) 1663 {
1664 int active = ((W)w)->active;
1665
1666 if (expect_true (--active < --timercnt))
1358 { 1667 {
1359 timers [((W)w)->active - 1] = timers [timercnt]; 1668 timers [active] = timers [timercnt];
1360 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1669 adjustheap (timers, timercnt, active);
1361 } 1670 }
1671 }
1362 1672
1363 ((WT)w)->at -= mn_now; 1673 ((WT)w)->at -= mn_now;
1364 1674
1365 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1366} 1676}
1367 1677
1368void 1678void noinline
1369ev_timer_again (EV_P_ struct ev_timer *w) 1679ev_timer_again (EV_P_ ev_timer *w)
1370{ 1680{
1371 if (ev_is_active (w)) 1681 if (ev_is_active (w))
1372 { 1682 {
1373 if (w->repeat) 1683 if (w->repeat)
1374 { 1684 {
1375 ((WT)w)->at = mn_now + w->repeat; 1685 ((WT)w)->at = mn_now + w->repeat;
1376 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1686 adjustheap (timers, timercnt, ((W)w)->active - 1);
1377 } 1687 }
1378 else 1688 else
1379 ev_timer_stop (EV_A_ w); 1689 ev_timer_stop (EV_A_ w);
1380 } 1690 }
1381 else if (w->repeat) 1691 else if (w->repeat)
1692 {
1693 w->at = w->repeat;
1382 ev_timer_start (EV_A_ w); 1694 ev_timer_start (EV_A_ w);
1695 }
1383} 1696}
1384 1697
1385#if EV_PERIODICS 1698#if EV_PERIODIC_ENABLE
1386void 1699void noinline
1387ev_periodic_start (EV_P_ struct ev_periodic *w) 1700ev_periodic_start (EV_P_ ev_periodic *w)
1388{ 1701{
1389 if (ev_is_active (w)) 1702 if (expect_false (ev_is_active (w)))
1390 return; 1703 return;
1391 1704
1392 if (w->reschedule_cb) 1705 if (w->reschedule_cb)
1393 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1394 else if (w->interval) 1707 else if (w->interval)
1395 { 1708 {
1396 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1709 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 */ 1710 /* 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; 1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1399 } 1712 }
1713 else
1714 ((WT)w)->at = w->offset;
1400 1715
1401 ev_start (EV_A_ (W)w, ++periodiccnt); 1716 ev_start (EV_A_ (W)w, ++periodiccnt);
1402 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1403 periodics [periodiccnt - 1] = w; 1718 periodics [periodiccnt - 1] = (WT)w;
1404 upheap ((WT *)periodics, periodiccnt - 1); 1719 upheap (periodics, periodiccnt - 1);
1405 1720
1406 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1407} 1722}
1408 1723
1409void 1724void noinline
1410ev_periodic_stop (EV_P_ struct ev_periodic *w) 1725ev_periodic_stop (EV_P_ ev_periodic *w)
1411{ 1726{
1412 ev_clear_pending (EV_A_ (W)w); 1727 clear_pending (EV_A_ (W)w);
1413 if (!ev_is_active (w)) 1728 if (expect_false (!ev_is_active (w)))
1414 return; 1729 return;
1415 1730
1416 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1417 1732
1418 if (((W)w)->active < periodiccnt--) 1733 {
1734 int active = ((W)w)->active;
1735
1736 if (expect_true (--active < --periodiccnt))
1419 { 1737 {
1420 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1738 periodics [active] = periodics [periodiccnt];
1421 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1739 adjustheap (periodics, periodiccnt, active);
1422 } 1740 }
1741 }
1423 1742
1424 ev_stop (EV_A_ (W)w); 1743 ev_stop (EV_A_ (W)w);
1425} 1744}
1426 1745
1427void 1746void noinline
1428ev_periodic_again (EV_P_ struct ev_periodic *w) 1747ev_periodic_again (EV_P_ ev_periodic *w)
1429{ 1748{
1430 /* TODO: use adjustheap and recalculation */ 1749 /* TODO: use adjustheap and recalculation */
1431 ev_periodic_stop (EV_A_ w); 1750 ev_periodic_stop (EV_A_ w);
1432 ev_periodic_start (EV_A_ w); 1751 ev_periodic_start (EV_A_ w);
1433} 1752}
1434#endif 1753#endif
1435 1754
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 1755#ifndef SA_RESTART
1503# define SA_RESTART 0 1756# define SA_RESTART 0
1504#endif 1757#endif
1505 1758
1506void 1759void noinline
1507ev_signal_start (EV_P_ struct ev_signal *w) 1760ev_signal_start (EV_P_ ev_signal *w)
1508{ 1761{
1509#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1510 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1511#endif 1764#endif
1512 if (ev_is_active (w)) 1765 if (expect_false (ev_is_active (w)))
1513 return; 1766 return;
1514 1767
1515 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1516 1769
1770 {
1771#ifndef _WIN32
1772 sigset_t full, prev;
1773 sigfillset (&full);
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1778
1779#ifndef _WIN32
1780 sigprocmask (SIG_SETMASK, &prev, 0);
1781#endif
1782 }
1783
1517 ev_start (EV_A_ (W)w, 1); 1784 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); 1785 wlist_add (&signals [w->signum - 1].head, (WL)w);
1520 1786
1521 if (!((WL)w)->next) 1787 if (!((WL)w)->next)
1522 { 1788 {
1523#if _WIN32 1789#if _WIN32
1524 signal (w->signum, sighandler); 1790 signal (w->signum, sighandler);
… …
1530 sigaction (w->signum, &sa, 0); 1796 sigaction (w->signum, &sa, 0);
1531#endif 1797#endif
1532 } 1798 }
1533} 1799}
1534 1800
1535void 1801void noinline
1536ev_signal_stop (EV_P_ struct ev_signal *w) 1802ev_signal_stop (EV_P_ ev_signal *w)
1537{ 1803{
1538 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1539 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1540 return; 1806 return;
1541 1807
1542 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1808 wlist_del (&signals [w->signum - 1].head, (WL)w);
1543 ev_stop (EV_A_ (W)w); 1809 ev_stop (EV_A_ (W)w);
1544 1810
1545 if (!signals [w->signum - 1].head) 1811 if (!signals [w->signum - 1].head)
1546 signal (w->signum, SIG_DFL); 1812 signal (w->signum, SIG_DFL);
1547} 1813}
1548 1814
1549void 1815void
1550ev_child_start (EV_P_ struct ev_child *w) 1816ev_child_start (EV_P_ ev_child *w)
1551{ 1817{
1552#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1553 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1554#endif 1820#endif
1555 if (ev_is_active (w)) 1821 if (expect_false (ev_is_active (w)))
1556 return; 1822 return;
1557 1823
1558 ev_start (EV_A_ (W)w, 1); 1824 ev_start (EV_A_ (W)w, 1);
1559 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1560} 1826}
1561 1827
1562void 1828void
1563ev_child_stop (EV_P_ struct ev_child *w) 1829ev_child_stop (EV_P_ ev_child *w)
1564{ 1830{
1565 ev_clear_pending (EV_A_ (W)w); 1831 clear_pending (EV_A_ (W)w);
1566 if (!ev_is_active (w)) 1832 if (expect_false (!ev_is_active (w)))
1567 return; 1833 return;
1568 1834
1569 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1570 ev_stop (EV_A_ (W)w); 1836 ev_stop (EV_A_ (W)w);
1571} 1837}
1572 1838
1839#if EV_STAT_ENABLE
1840
1841# ifdef _WIN32
1842# undef lstat
1843# define lstat(a,b) _stati64 (a,b)
1844# endif
1845
1846#define DEF_STAT_INTERVAL 5.0074891
1847#define MIN_STAT_INTERVAL 0.1074891
1848
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850
1851#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192
1853
1854static void noinline
1855infy_add (EV_P_ ev_stat *w)
1856{
1857 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);
1858
1859 if (w->wd < 0)
1860 {
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862
1863 /* monitor some parent directory for speedup hints */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 {
1866 char path [4096];
1867 strcpy (path, w->path);
1868
1869 do
1870 {
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873
1874 char *pend = strrchr (path, '/');
1875
1876 if (!pend)
1877 break; /* whoops, no '/', complain to your admin */
1878
1879 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 }
1884 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887
1888 if (w->wd >= 0)
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1890}
1891
1892static void noinline
1893infy_del (EV_P_ ev_stat *w)
1894{
1895 int slot;
1896 int wd = w->wd;
1897
1898 if (wd < 0)
1899 return;
1900
1901 w->wd = -2;
1902 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1903 wlist_del (&fs_hash [slot].head, (WL)w);
1904
1905 /* remove this watcher, if others are watching it, they will rearm */
1906 inotify_rm_watch (fs_fd, wd);
1907}
1908
1909static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{
1912 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev);
1916 else
1917 {
1918 WL w_;
1919
1920 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1921 {
1922 ev_stat *w = (ev_stat *)w_;
1923 w_ = w_->next; /* lets us remove this watcher and all before it */
1924
1925 if (w->wd == wd || wd == -1)
1926 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 {
1929 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */
1931 }
1932
1933 stat_timer_cb (EV_A_ &w->timer, 0);
1934 }
1935 }
1936 }
1937}
1938
1939static void
1940infy_cb (EV_P_ ev_io *w, int revents)
1941{
1942 char buf [EV_INOTIFY_BUFSIZE];
1943 struct inotify_event *ev = (struct inotify_event *)buf;
1944 int ofs;
1945 int len = read (fs_fd, buf, sizeof (buf));
1946
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949}
1950
1951void inline_size
1952infy_init (EV_P)
1953{
1954 if (fs_fd != -2)
1955 return;
1956
1957 fs_fd = inotify_init ();
1958
1959 if (fs_fd >= 0)
1960 {
1961 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1962 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w);
1964 }
1965}
1966
1967void inline_size
1968infy_fork (EV_P)
1969{
1970 int slot;
1971
1972 if (fs_fd < 0)
1973 return;
1974
1975 close (fs_fd);
1976 fs_fd = inotify_init ();
1977
1978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1979 {
1980 WL w_ = fs_hash [slot].head;
1981 fs_hash [slot].head = 0;
1982
1983 while (w_)
1984 {
1985 ev_stat *w = (ev_stat *)w_;
1986 w_ = w_->next; /* lets us add this watcher */
1987
1988 w->wd = -1;
1989
1990 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else
1993 ev_timer_start (EV_A_ &w->timer);
1994 }
1995
1996 }
1997}
1998
1999#endif
2000
2001void
2002ev_stat_stat (EV_P_ ev_stat *w)
2003{
2004 if (lstat (w->path, &w->attr) < 0)
2005 w->attr.st_nlink = 0;
2006 else if (!w->attr.st_nlink)
2007 w->attr.st_nlink = 1;
2008}
2009
2010static void noinline
2011stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2012{
2013 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2014
2015 /* we copy this here each the time so that */
2016 /* prev has the old value when the callback gets invoked */
2017 w->prev = w->attr;
2018 ev_stat_stat (EV_A_ w);
2019
2020 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2021 if (
2022 w->prev.st_dev != w->attr.st_dev
2023 || w->prev.st_ino != w->attr.st_ino
2024 || w->prev.st_mode != w->attr.st_mode
2025 || w->prev.st_nlink != w->attr.st_nlink
2026 || w->prev.st_uid != w->attr.st_uid
2027 || w->prev.st_gid != w->attr.st_gid
2028 || w->prev.st_rdev != w->attr.st_rdev
2029 || w->prev.st_size != w->attr.st_size
2030 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime
2033 ) {
2034 #if EV_USE_INOTIFY
2035 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */
2038 #endif
2039
2040 ev_feed_event (EV_A_ w, EV_STAT);
2041 }
2042}
2043
2044void
2045ev_stat_start (EV_P_ ev_stat *w)
2046{
2047 if (expect_false (ev_is_active (w)))
2048 return;
2049
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w);
2055
2056 if (w->interval < MIN_STAT_INTERVAL)
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2060 ev_set_priority (&w->timer, ev_priority (w));
2061
2062#if EV_USE_INOTIFY
2063 infy_init (EV_A);
2064
2065 if (fs_fd >= 0)
2066 infy_add (EV_A_ w);
2067 else
2068#endif
2069 ev_timer_start (EV_A_ &w->timer);
2070
2071 ev_start (EV_A_ (W)w, 1);
2072}
2073
2074void
2075ev_stat_stop (EV_P_ ev_stat *w)
2076{
2077 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w)))
2079 return;
2080
2081#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w);
2083#endif
2084 ev_timer_stop (EV_A_ &w->timer);
2085
2086 ev_stop (EV_A_ (W)w);
2087}
2088#endif
2089
2090#if EV_IDLE_ENABLE
2091void
2092ev_idle_start (EV_P_ ev_idle *w)
2093{
2094 if (expect_false (ev_is_active (w)))
2095 return;
2096
2097 pri_adjust (EV_A_ (W)w);
2098
2099 {
2100 int active = ++idlecnt [ABSPRI (w)];
2101
2102 ++idleall;
2103 ev_start (EV_A_ (W)w, active);
2104
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w;
2107 }
2108}
2109
2110void
2111ev_idle_stop (EV_P_ ev_idle *w)
2112{
2113 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w)))
2115 return;
2116
2117 {
2118 int active = ((W)w)->active;
2119
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2122
2123 ev_stop (EV_A_ (W)w);
2124 --idleall;
2125 }
2126}
2127#endif
2128
2129void
2130ev_prepare_start (EV_P_ ev_prepare *w)
2131{
2132 if (expect_false (ev_is_active (w)))
2133 return;
2134
2135 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w;
2138}
2139
2140void
2141ev_prepare_stop (EV_P_ ev_prepare *w)
2142{
2143 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w)))
2145 return;
2146
2147 {
2148 int active = ((W)w)->active;
2149 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active;
2151 }
2152
2153 ev_stop (EV_A_ (W)w);
2154}
2155
2156void
2157ev_check_start (EV_P_ ev_check *w)
2158{
2159 if (expect_false (ev_is_active (w)))
2160 return;
2161
2162 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w;
2165}
2166
2167void
2168ev_check_stop (EV_P_ ev_check *w)
2169{
2170 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w)))
2172 return;
2173
2174 {
2175 int active = ((W)w)->active;
2176 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active;
2178 }
2179
2180 ev_stop (EV_A_ (W)w);
2181}
2182
2183#if EV_EMBED_ENABLE
2184void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w)
2186{
2187 ev_loop (w->other, EVLOOP_NONBLOCK);
2188}
2189
2190static void
2191embed_io_cb (EV_P_ ev_io *io, int revents)
2192{
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194
2195 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else
2198 ev_embed_sweep (loop, w);
2199}
2200
2201static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205
2206 fd_reify (w->other);
2207}
2208
2209void
2210ev_embed_start (EV_P_ ev_embed *w)
2211{
2212 if (expect_false (ev_is_active (w)))
2213 return;
2214
2215 {
2216 struct ev_loop *loop = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 }
2220
2221 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io);
2223
2224 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare);
2227
2228 ev_start (EV_A_ (W)w, 1);
2229}
2230
2231void
2232ev_embed_stop (EV_P_ ev_embed *w)
2233{
2234 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w)))
2236 return;
2237
2238 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare);
2240
2241 ev_stop (EV_A_ (W)w);
2242}
2243#endif
2244
2245#if EV_FORK_ENABLE
2246void
2247ev_fork_start (EV_P_ ev_fork *w)
2248{
2249 if (expect_false (ev_is_active (w)))
2250 return;
2251
2252 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w;
2255}
2256
2257void
2258ev_fork_stop (EV_P_ ev_fork *w)
2259{
2260 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w)))
2262 return;
2263
2264 {
2265 int active = ((W)w)->active;
2266 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active;
2268 }
2269
2270 ev_stop (EV_A_ (W)w);
2271}
2272#endif
2273
1573/*****************************************************************************/ 2274/*****************************************************************************/
1574 2275
1575struct ev_once 2276struct ev_once
1576{ 2277{
1577 struct ev_io io; 2278 ev_io io;
1578 struct ev_timer to; 2279 ev_timer to;
1579 void (*cb)(int revents, void *arg); 2280 void (*cb)(int revents, void *arg);
1580 void *arg; 2281 void *arg;
1581}; 2282};
1582 2283
1583static void 2284static void
… …
1592 2293
1593 cb (revents, arg); 2294 cb (revents, arg);
1594} 2295}
1595 2296
1596static void 2297static void
1597once_cb_io (EV_P_ struct ev_io *w, int revents) 2298once_cb_io (EV_P_ ev_io *w, int revents)
1598{ 2299{
1599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1600} 2301}
1601 2302
1602static void 2303static void
1603once_cb_to (EV_P_ struct ev_timer *w, int revents) 2304once_cb_to (EV_P_ ev_timer *w, int revents)
1604{ 2305{
1605 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1606} 2307}
1607 2308
1608void 2309void
1609ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1610{ 2311{
1611 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1612 2313
1613 if (!once) 2314 if (expect_false (!once))
2315 {
1614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1615 else 2317 return;
1616 { 2318 }
2319
1617 once->cb = cb; 2320 once->cb = cb;
1618 once->arg = arg; 2321 once->arg = arg;
1619 2322
1620 ev_init (&once->io, once_cb_io); 2323 ev_init (&once->io, once_cb_io);
1621 if (fd >= 0) 2324 if (fd >= 0)
1622 { 2325 {
1623 ev_io_set (&once->io, fd, events); 2326 ev_io_set (&once->io, fd, events);
1624 ev_io_start (EV_A_ &once->io); 2327 ev_io_start (EV_A_ &once->io);
1625 } 2328 }
1626 2329
1627 ev_init (&once->to, once_cb_to); 2330 ev_init (&once->to, once_cb_to);
1628 if (timeout >= 0.) 2331 if (timeout >= 0.)
1629 { 2332 {
1630 ev_timer_set (&once->to, timeout, 0.); 2333 ev_timer_set (&once->to, timeout, 0.);
1631 ev_timer_start (EV_A_ &once->to); 2334 ev_timer_start (EV_A_ &once->to);
1632 }
1633 } 2335 }
1634} 2336}
2337
2338#if EV_MULTIPLICITY
2339 #include "ev_wrap.h"
2340#endif
1635 2341
1636#ifdef __cplusplus 2342#ifdef __cplusplus
1637} 2343}
1638#endif 2344#endif
1639 2345

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