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Comparing libev/ev.c (file contents):
Revision 1.101 by root, Sun Nov 11 04:04:23 2007 UTC vs.
Revision 1.179 by root, Tue Dec 11 21:04:40 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 && 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
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 123#ifdef EV_H
141# include EV_H 124# include EV_H
142#else 125#else
143# include "ev.h" 126# include "ev.h"
144#endif 127#endif
145 128
129#ifndef _WIN32
130# include <sys/time.h>
131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
138# endif
139#endif
140
141/**/
142
143#ifndef EV_USE_MONOTONIC
144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
149#endif
150
151#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1
153#endif
154
155#ifndef EV_USE_POLL
156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
161#endif
162
163#ifndef EV_USE_EPOLL
164# define EV_USE_EPOLL 0
165#endif
166
167#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0
169#endif
170
171#ifndef EV_USE_PORT
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
193#endif
194
195/**/
196
197#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0
200#endif
201
202#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0
205#endif
206
207#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
219/**/
220
221/*
222 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding
225 * errors are against us.
226 * This value is good at least till the year 4000.
227 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
230
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234
146#if __GNUC__ >= 3 235#if __GNUC__ >= 3
147# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 237# define noinline __attribute__ ((noinline))
149#else 238#else
150# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
151# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
152#endif 244#endif
153 245
154#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
155#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
156 255
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
160typedef struct ev_watcher *W; 262typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
163 265
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165 267
166#ifdef WIN32 268#ifdef _WIN32
167# include "ev_win32.c" 269# include "ev_win32.c"
168#endif 270#endif
169 271
170/*****************************************************************************/ 272/*****************************************************************************/
171 273
172static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
173 275
276void
174void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
175{ 278{
176 syserr_cb = cb; 279 syserr_cb = cb;
177} 280}
178 281
179static void 282static void noinline
180syserr (const char *msg) 283syserr (const char *msg)
181{ 284{
182 if (!msg) 285 if (!msg)
183 msg = "(libev) system error"; 286 msg = "(libev) system error";
184 287
… …
191 } 294 }
192} 295}
193 296
194static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
195 298
299void
196void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
197{ 301{
198 alloc = cb; 302 alloc = cb;
199} 303}
200 304
201static void * 305inline_speed void *
202ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
203{ 307{
204 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205 309
206 if (!ptr && size) 310 if (!ptr && size)
… …
220typedef struct 324typedef struct
221{ 325{
222 WL head; 326 WL head;
223 unsigned char events; 327 unsigned char events;
224 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
225} ANFD; 332} ANFD;
226 333
227typedef struct 334typedef struct
228{ 335{
229 W w; 336 W w;
230 int events; 337 int events;
231} ANPENDING; 338} ANPENDING;
339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
232 346
233#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
234 348
235 struct ev_loop 349 struct ev_loop
236 { 350 {
… …
240 #include "ev_vars.h" 354 #include "ev_vars.h"
241 #undef VAR 355 #undef VAR
242 }; 356 };
243 #include "ev_wrap.h" 357 #include "ev_wrap.h"
244 358
245 struct ev_loop default_loop_struct; 359 static struct ev_loop default_loop_struct;
246 static struct ev_loop *default_loop; 360 struct ev_loop *ev_default_loop_ptr;
247 361
248#else 362#else
249 363
250 ev_tstamp ev_rt_now; 364 ev_tstamp ev_rt_now;
251 #define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
252 #include "ev_vars.h" 366 #include "ev_vars.h"
253 #undef VAR 367 #undef VAR
254 368
255 static int default_loop; 369 static int ev_default_loop_ptr;
256 370
257#endif 371#endif
258 372
259/*****************************************************************************/ 373/*****************************************************************************/
260 374
… …
270 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
271 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
272#endif 386#endif
273} 387}
274 388
275inline ev_tstamp 389ev_tstamp inline_size
276get_clock (void) 390get_clock (void)
277{ 391{
278#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
279 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
280 { 394 {
… …
293{ 407{
294 return ev_rt_now; 408 return ev_rt_now;
295} 409}
296#endif 410#endif
297 411
298#define array_roundsize(type,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
416
417 do
418 ncur <<= 1;
419 while (cnt > ncur);
420
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096)
423 {
424 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
426 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem;
428 }
429
430 return ncur;
431}
432
433static noinline void *
434array_realloc (int elem, void *base, int *cur, int cnt)
435{
436 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur);
438}
299 439
300#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
301 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
302 { \ 442 { \
303 int newcnt = cur; \ 443 int ocur_ = (cur); \
304 do \ 444 (base) = (type *)array_realloc \
305 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
306 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
307 } \
308 while ((cnt) > newcnt); \
309 \
310 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
311 init (base + cur, newcnt - cur); \
312 cur = newcnt; \
313 } 447 }
314 448
449#if 0
315#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
316 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
317 { \ 452 { \
318 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
319 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321 } 456 }
322 457#endif
323/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
324/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
325#define array_free_microshit(stem) \
326 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
327 458
328#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
329 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
330 461
331/*****************************************************************************/ 462/*****************************************************************************/
332 463
333static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_speed
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
334anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
335{ 494{
336 while (count--) 495 while (count--)
337 { 496 {
338 base->head = 0; 497 base->head = 0;
… …
341 500
342 ++base; 501 ++base;
343 } 502 }
344} 503}
345 504
346void 505void inline_speed
347ev_feed_event (EV_P_ void *w, int revents)
348{
349 W w_ = (W)w;
350
351 if (w_->pending)
352 {
353 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
354 return;
355 }
356
357 w_->pending = ++pendingcnt [ABSPRI (w_)];
358 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
359 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
360 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
361}
362
363static void
364queue_events (EV_P_ W *events, int eventcnt, int type)
365{
366 int i;
367
368 for (i = 0; i < eventcnt; ++i)
369 ev_feed_event (EV_A_ events [i], type);
370}
371
372inline void
373fd_event (EV_P_ int fd, int revents) 506fd_event (EV_P_ int fd, int revents)
374{ 507{
375 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
376 struct ev_io *w; 509 ev_io *w;
377 510
378 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 511 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
379 { 512 {
380 int ev = w->events & revents; 513 int ev = w->events & revents;
381 514
382 if (ev) 515 if (ev)
383 ev_feed_event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
… …
385} 518}
386 519
387void 520void
388ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
389{ 522{
523 if (fd >= 0 && fd < anfdmax)
390 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
391} 525}
392 526
393/*****************************************************************************/ 527void inline_size
394
395static void
396fd_reify (EV_P) 528fd_reify (EV_P)
397{ 529{
398 int i; 530 int i;
399 531
400 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
401 { 533 {
402 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
403 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
404 struct ev_io *w; 536 ev_io *w;
405 537
406 int events = 0; 538 int events = 0;
407 539
408 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409 events |= w->events; 541 events |= w->events;
410 542
543#if EV_SELECT_IS_WINSOCKET
544 if (events)
545 {
546 unsigned long argp;
547 anfd->handle = _get_osfhandle (fd);
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549 }
550#endif
551
411 anfd->reify = 0; 552 anfd->reify = 0;
412 553
413 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
414 anfd->events = events; 555 anfd->events = events;
415 } 556 }
416 557
417 fdchangecnt = 0; 558 fdchangecnt = 0;
418} 559}
419 560
420static void 561void inline_size
421fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
422{ 563{
423 if (anfds [fd].reify) 564 if (expect_false (anfds [fd].reify))
424 return; 565 return;
425 566
426 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
427 568
428 ++fdchangecnt; 569 ++fdchangecnt;
429 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
430 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
431} 572}
432 573
433static void 574void inline_speed
434fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
435{ 576{
436 struct ev_io *w; 577 ev_io *w;
437 578
438 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
439 { 580 {
440 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
441 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
442 } 583 }
443} 584}
444 585
445static int 586int inline_size
446fd_valid (int fd) 587fd_valid (int fd)
447{ 588{
448#ifdef WIN32 589#ifdef _WIN32
449 return !!win32_get_osfhandle (fd); 590 return _get_osfhandle (fd) != -1;
450#else 591#else
451 return fcntl (fd, F_GETFD) != -1; 592 return fcntl (fd, F_GETFD) != -1;
452#endif 593#endif
453} 594}
454 595
455/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
456static void 597static void noinline
457fd_ebadf (EV_P) 598fd_ebadf (EV_P)
458{ 599{
459 int fd; 600 int fd;
460 601
461 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
… …
463 if (!fd_valid (fd) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
464 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
465} 606}
466 607
467/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
468static void 609static void noinline
469fd_enomem (EV_P) 610fd_enomem (EV_P)
470{ 611{
471 int fd; 612 int fd;
472 613
473 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
476 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
477 return; 618 return;
478 } 619 }
479} 620}
480 621
481/* usually called after fork if method needs to re-arm all fds from scratch */ 622/* usually called after fork if backend needs to re-arm all fds from scratch */
482static void 623static void noinline
483fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
484{ 625{
485 int fd; 626 int fd;
486 627
487 /* this should be highly optimised to not do anything but set a flag */
488 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
489 if (anfds [fd].events) 629 if (anfds [fd].events)
490 { 630 {
491 anfds [fd].events = 0; 631 anfds [fd].events = 0;
492 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
493 } 633 }
494} 634}
495 635
496/*****************************************************************************/ 636/*****************************************************************************/
497 637
498static void 638void inline_speed
499upheap (WT *heap, int k) 639upheap (WT *heap, int k)
500{ 640{
501 WT w = heap [k]; 641 WT w = heap [k];
502 642
503 while (k && heap [k >> 1]->at > w->at) 643 while (k)
504 { 644 {
645 int p = (k - 1) >> 1;
646
647 if (heap [p]->at <= w->at)
648 break;
649
505 heap [k] = heap [k >> 1]; 650 heap [k] = heap [p];
506 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
507 k >>= 1; 652 k = p;
508 } 653 }
509 654
510 heap [k] = w; 655 heap [k] = w;
511 ((W)heap [k])->active = k + 1; 656 ((W)heap [k])->active = k + 1;
512 657
513} 658}
514 659
515static void 660void inline_speed
516downheap (WT *heap, int N, int k) 661downheap (WT *heap, int N, int k)
517{ 662{
518 WT w = heap [k]; 663 WT w = heap [k];
519 664
520 while (k < (N >> 1)) 665 for (;;)
521 { 666 {
522 int j = k << 1; 667 int c = (k << 1) + 1;
523 668
524 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 669 if (c >= N)
525 ++j;
526
527 if (w->at <= heap [j]->at)
528 break; 670 break;
529 671
672 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673 ? 1 : 0;
674
675 if (w->at <= heap [c]->at)
676 break;
677
530 heap [k] = heap [j]; 678 heap [k] = heap [c];
531 ((W)heap [k])->active = k + 1; 679 ((W)heap [k])->active = k + 1;
680
532 k = j; 681 k = c;
533 } 682 }
534 683
535 heap [k] = w; 684 heap [k] = w;
536 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
537} 686}
538 687
539inline void 688void inline_size
540adjustheap (WT *heap, int N, int k) 689adjustheap (WT *heap, int N, int k)
541{ 690{
542 upheap (heap, k); 691 upheap (heap, k);
543 downheap (heap, N, k); 692 downheap (heap, N, k);
544} 693}
… …
554static ANSIG *signals; 703static ANSIG *signals;
555static int signalmax; 704static int signalmax;
556 705
557static int sigpipe [2]; 706static int sigpipe [2];
558static sig_atomic_t volatile gotsig; 707static sig_atomic_t volatile gotsig;
559static struct ev_io sigev; 708static ev_io sigev;
560 709
561static void 710void inline_size
562signals_init (ANSIG *base, int count) 711signals_init (ANSIG *base, int count)
563{ 712{
564 while (count--) 713 while (count--)
565 { 714 {
566 base->head = 0; 715 base->head = 0;
… …
571} 720}
572 721
573static void 722static void
574sighandler (int signum) 723sighandler (int signum)
575{ 724{
576#if WIN32 725#if _WIN32
577 signal (signum, sighandler); 726 signal (signum, sighandler);
578#endif 727#endif
579 728
580 signals [signum - 1].gotsig = 1; 729 signals [signum - 1].gotsig = 1;
581 730
582 if (!gotsig) 731 if (!gotsig)
583 { 732 {
584 int old_errno = errno; 733 int old_errno = errno;
585 gotsig = 1; 734 gotsig = 1;
586#ifdef WIN32
587 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588#else
589 write (sigpipe [1], &signum, 1); 735 write (sigpipe [1], &signum, 1);
590#endif
591 errno = old_errno; 736 errno = old_errno;
592 } 737 }
593} 738}
594 739
595void 740void noinline
596ev_feed_signal_event (EV_P_ int signum) 741ev_feed_signal_event (EV_P_ int signum)
597{ 742{
598 WL w; 743 WL w;
599 744
600#if EV_MULTIPLICITY 745#if EV_MULTIPLICITY
601 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 746 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
602#endif 747#endif
603 748
604 --signum; 749 --signum;
605 750
606 if (signum < 0 || signum >= signalmax) 751 if (signum < 0 || signum >= signalmax)
… …
611 for (w = signals [signum].head; w; w = w->next) 756 for (w = signals [signum].head; w; w = w->next)
612 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 757 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613} 758}
614 759
615static void 760static void
616sigcb (EV_P_ struct ev_io *iow, int revents) 761sigcb (EV_P_ ev_io *iow, int revents)
617{ 762{
618 int signum; 763 int signum;
619 764
620#ifdef WIN32
621 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622#else
623 read (sigpipe [0], &revents, 1); 765 read (sigpipe [0], &revents, 1);
624#endif
625 gotsig = 0; 766 gotsig = 0;
626 767
627 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
628 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
629 ev_feed_signal_event (EV_A_ signum + 1); 770 ev_feed_signal_event (EV_A_ signum + 1);
630} 771}
631 772
632static void 773void inline_speed
774fd_intern (int fd)
775{
776#ifdef _WIN32
777 int arg = 1;
778 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779#else
780 fcntl (fd, F_SETFD, FD_CLOEXEC);
781 fcntl (fd, F_SETFL, O_NONBLOCK);
782#endif
783}
784
785static void noinline
633siginit (EV_P) 786siginit (EV_P)
634{ 787{
635#ifndef WIN32 788 fd_intern (sigpipe [0]);
636 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 789 fd_intern (sigpipe [1]);
637 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
638
639 /* rather than sort out wether we really need nb, set it */
640 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
641 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
642#endif
643 790
644 ev_io_set (&sigev, sigpipe [0], EV_READ); 791 ev_io_set (&sigev, sigpipe [0], EV_READ);
645 ev_io_start (EV_A_ &sigev); 792 ev_io_start (EV_A_ &sigev);
646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 793 ev_unref (EV_A); /* child watcher should not keep loop alive */
647} 794}
648 795
649/*****************************************************************************/ 796/*****************************************************************************/
650 797
651static struct ev_child *childs [PID_HASHSIZE]; 798static ev_child *childs [EV_PID_HASHSIZE];
652 799
653#ifndef WIN32 800#ifndef _WIN32
654 801
655static struct ev_signal childev; 802static ev_signal childev;
803
804void inline_speed
805child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
806{
807 ev_child *w;
808
809 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
810 if (w->pid == pid || !w->pid)
811 {
812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
813 w->rpid = pid;
814 w->rstatus = status;
815 ev_feed_event (EV_A_ (W)w, EV_CHILD);
816 }
817}
656 818
657#ifndef WCONTINUED 819#ifndef WCONTINUED
658# define WCONTINUED 0 820# define WCONTINUED 0
659#endif 821#endif
660 822
661static void 823static void
662child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
663{
664 struct ev_child *w;
665
666 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
667 if (w->pid == pid || !w->pid)
668 {
669 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
670 w->rpid = pid;
671 w->rstatus = status;
672 ev_feed_event (EV_A_ (W)w, EV_CHILD);
673 }
674}
675
676static void
677childcb (EV_P_ struct ev_signal *sw, int revents) 824childcb (EV_P_ ev_signal *sw, int revents)
678{ 825{
679 int pid, status; 826 int pid, status;
680 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
681 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
682 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
683 /* make sure we are called again until all childs have been reaped */ 835 /* make sure we are called again until all childs have been reaped */
836 /* we need to do it this way so that the callback gets called before we continue */
684 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
685 838
686 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
687 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 841 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
688 }
689} 842}
690 843
691#endif 844#endif
692 845
693/*****************************************************************************/ 846/*****************************************************************************/
694 847
848#if EV_USE_PORT
849# include "ev_port.c"
850#endif
695#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
696# include "ev_kqueue.c" 852# include "ev_kqueue.c"
697#endif 853#endif
698#if EV_USE_EPOLL 854#if EV_USE_EPOLL
699# include "ev_epoll.c" 855# include "ev_epoll.c"
… …
716{ 872{
717 return EV_VERSION_MINOR; 873 return EV_VERSION_MINOR;
718} 874}
719 875
720/* return true if we are running with elevated privileges and should ignore env variables */ 876/* return true if we are running with elevated privileges and should ignore env variables */
721static int 877int inline_size
722enable_secure (void) 878enable_secure (void)
723{ 879{
724#ifdef WIN32 880#ifdef _WIN32
725 return 0; 881 return 0;
726#else 882#else
727 return getuid () != geteuid () 883 return getuid () != geteuid ()
728 || getgid () != getegid (); 884 || getgid () != getegid ();
729#endif 885#endif
730} 886}
731 887
732int 888unsigned int
733ev_method (EV_P) 889ev_supported_backends (void)
734{ 890{
735 return method; 891 unsigned int flags = 0;
736}
737 892
738static void 893 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
739loop_init (EV_P_ int methods) 894 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
895 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
897 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
898
899 return flags;
900}
901
902unsigned int
903ev_recommended_backends (void)
740{ 904{
741 if (!method) 905 unsigned int flags = ev_supported_backends ();
906
907#ifndef __NetBSD__
908 /* kqueue is borked on everything but netbsd apparently */
909 /* it usually doesn't work correctly on anything but sockets and pipes */
910 flags &= ~EVBACKEND_KQUEUE;
911#endif
912#ifdef __APPLE__
913 // flags &= ~EVBACKEND_KQUEUE; for documentation
914 flags &= ~EVBACKEND_POLL;
915#endif
916
917 return flags;
918}
919
920unsigned int
921ev_embeddable_backends (void)
922{
923 return EVBACKEND_EPOLL
924 | EVBACKEND_KQUEUE
925 | EVBACKEND_PORT;
926}
927
928unsigned int
929ev_backend (EV_P)
930{
931 return backend;
932}
933
934unsigned int
935ev_loop_count (EV_P)
936{
937 return loop_count;
938}
939
940static void noinline
941loop_init (EV_P_ unsigned int flags)
942{
943 if (!backend)
742 { 944 {
743#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
744 { 946 {
745 struct timespec ts; 947 struct timespec ts;
746 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 948 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
751 ev_rt_now = ev_time (); 953 ev_rt_now = ev_time ();
752 mn_now = get_clock (); 954 mn_now = get_clock ();
753 now_floor = mn_now; 955 now_floor = mn_now;
754 rtmn_diff = ev_rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
755 957
756 if (methods == EVMETHOD_AUTO) 958 /* pid check not overridable via env */
757 if (!enable_secure () && getenv ("LIBEV_METHODS")) 959#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid ();
962#endif
963
964 if (!(flags & EVFLAG_NOENV)
965 && !enable_secure ()
966 && getenv ("LIBEV_FLAGS"))
758 methods = atoi (getenv ("LIBEV_METHODS")); 967 flags = atoi (getenv ("LIBEV_FLAGS"));
759 else
760 methods = EVMETHOD_ANY;
761 968
762 method = 0; 969 if (!(flags & 0x0000ffffUL))
970 flags |= ev_recommended_backends ();
971
972 backend = 0;
973 backend_fd = -1;
763#if EV_USE_WIN32 974#if EV_USE_INOTIFY
764 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 975 fs_fd = -2;
976#endif
977
978#if EV_USE_PORT
979 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
765#endif 980#endif
766#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
767 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
768#endif 983#endif
769#if EV_USE_EPOLL 984#if EV_USE_EPOLL
770 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 985 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
771#endif 986#endif
772#if EV_USE_POLL 987#if EV_USE_POLL
773 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
774#endif 989#endif
775#if EV_USE_SELECT 990#if EV_USE_SELECT
776 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
777#endif 992#endif
778 993
779 ev_init (&sigev, sigcb); 994 ev_init (&sigev, sigcb);
780 ev_set_priority (&sigev, EV_MAXPRI); 995 ev_set_priority (&sigev, EV_MAXPRI);
781 } 996 }
782} 997}
783 998
784void 999static void noinline
785loop_destroy (EV_P) 1000loop_destroy (EV_P)
786{ 1001{
787 int i; 1002 int i;
788 1003
789#if EV_USE_WIN32 1004#if EV_USE_INOTIFY
790 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1005 if (fs_fd >= 0)
1006 close (fs_fd);
1007#endif
1008
1009 if (backend_fd >= 0)
1010 close (backend_fd);
1011
1012#if EV_USE_PORT
1013 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
791#endif 1014#endif
792#if EV_USE_KQUEUE 1015#if EV_USE_KQUEUE
793 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1016 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
794#endif 1017#endif
795#if EV_USE_EPOLL 1018#if EV_USE_EPOLL
796 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1019 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
797#endif 1020#endif
798#if EV_USE_POLL 1021#if EV_USE_POLL
799 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1022 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
800#endif 1023#endif
801#if EV_USE_SELECT 1024#if EV_USE_SELECT
802 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
803#endif 1026#endif
804 1027
805 for (i = NUMPRI; i--; ) 1028 for (i = NUMPRI; i--; )
1029 {
806 array_free (pending, [i]); 1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
807 1035
808 /* have to use the microsoft-never-gets-it-right macro */ 1036 /* have to use the microsoft-never-gets-it-right macro */
809 array_free_microshit (fdchange); 1037 array_free (fdchange, EMPTY);
810 array_free_microshit (timer); 1038 array_free (timer, EMPTY);
811#if EV_PERIODICS 1039#if EV_PERIODIC_ENABLE
812 array_free_microshit (periodic); 1040 array_free (periodic, EMPTY);
813#endif 1041#endif
814 array_free_microshit (idle); 1042 array_free (prepare, EMPTY);
815 array_free_microshit (prepare); 1043 array_free (check, EMPTY);
816 array_free_microshit (check);
817 1044
818 method = 0; 1045 backend = 0;
819} 1046}
820 1047
821static void 1048void inline_size infy_fork (EV_P);
1049
1050void inline_size
822loop_fork (EV_P) 1051loop_fork (EV_P)
823{ 1052{
1053#if EV_USE_PORT
1054 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055#endif
1056#if EV_USE_KQUEUE
1057 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1058#endif
824#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
825 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
826#endif 1061#endif
827#if EV_USE_KQUEUE 1062#if EV_USE_INOTIFY
828 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1063 infy_fork (EV_A);
829#endif 1064#endif
830 1065
831 if (ev_is_active (&sigev)) 1066 if (ev_is_active (&sigev))
832 { 1067 {
833 /* default loop */ 1068 /* default loop */
… …
846 postfork = 0; 1081 postfork = 0;
847} 1082}
848 1083
849#if EV_MULTIPLICITY 1084#if EV_MULTIPLICITY
850struct ev_loop * 1085struct ev_loop *
851ev_loop_new (int methods) 1086ev_loop_new (unsigned int flags)
852{ 1087{
853 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1088 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854 1089
855 memset (loop, 0, sizeof (struct ev_loop)); 1090 memset (loop, 0, sizeof (struct ev_loop));
856 1091
857 loop_init (EV_A_ methods); 1092 loop_init (EV_A_ flags);
858 1093
859 if (ev_method (EV_A)) 1094 if (ev_backend (EV_A))
860 return loop; 1095 return loop;
861 1096
862 return 0; 1097 return 0;
863} 1098}
864 1099
… …
877 1112
878#endif 1113#endif
879 1114
880#if EV_MULTIPLICITY 1115#if EV_MULTIPLICITY
881struct ev_loop * 1116struct ev_loop *
1117ev_default_loop_init (unsigned int flags)
882#else 1118#else
883int 1119int
1120ev_default_loop (unsigned int flags)
884#endif 1121#endif
885ev_default_loop (int methods)
886{ 1122{
887 if (sigpipe [0] == sigpipe [1]) 1123 if (sigpipe [0] == sigpipe [1])
888 if (pipe (sigpipe)) 1124 if (pipe (sigpipe))
889 return 0; 1125 return 0;
890 1126
891 if (!default_loop) 1127 if (!ev_default_loop_ptr)
892 { 1128 {
893#if EV_MULTIPLICITY 1129#if EV_MULTIPLICITY
894 struct ev_loop *loop = default_loop = &default_loop_struct; 1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
895#else 1131#else
896 default_loop = 1; 1132 ev_default_loop_ptr = 1;
897#endif 1133#endif
898 1134
899 loop_init (EV_A_ methods); 1135 loop_init (EV_A_ flags);
900 1136
901 if (ev_method (EV_A)) 1137 if (ev_backend (EV_A))
902 { 1138 {
903 siginit (EV_A); 1139 siginit (EV_A);
904 1140
905#ifndef WIN32 1141#ifndef _WIN32
906 ev_signal_init (&childev, childcb, SIGCHLD); 1142 ev_signal_init (&childev, childcb, SIGCHLD);
907 ev_set_priority (&childev, EV_MAXPRI); 1143 ev_set_priority (&childev, EV_MAXPRI);
908 ev_signal_start (EV_A_ &childev); 1144 ev_signal_start (EV_A_ &childev);
909 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1145 ev_unref (EV_A); /* child watcher should not keep loop alive */
910#endif 1146#endif
911 } 1147 }
912 else 1148 else
913 default_loop = 0; 1149 ev_default_loop_ptr = 0;
914 } 1150 }
915 1151
916 return default_loop; 1152 return ev_default_loop_ptr;
917} 1153}
918 1154
919void 1155void
920ev_default_destroy (void) 1156ev_default_destroy (void)
921{ 1157{
922#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
923 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
924#endif 1160#endif
925 1161
926#ifndef WIN32 1162#ifndef _WIN32
927 ev_ref (EV_A); /* child watcher */ 1163 ev_ref (EV_A); /* child watcher */
928 ev_signal_stop (EV_A_ &childev); 1164 ev_signal_stop (EV_A_ &childev);
929#endif 1165#endif
930 1166
931 ev_ref (EV_A); /* signal watcher */ 1167 ev_ref (EV_A); /* signal watcher */
… …
939 1175
940void 1176void
941ev_default_fork (void) 1177ev_default_fork (void)
942{ 1178{
943#if EV_MULTIPLICITY 1179#if EV_MULTIPLICITY
944 struct ev_loop *loop = default_loop; 1180 struct ev_loop *loop = ev_default_loop_ptr;
945#endif 1181#endif
946 1182
947 if (method) 1183 if (backend)
948 postfork = 1; 1184 postfork = 1;
949} 1185}
950 1186
951/*****************************************************************************/ 1187/*****************************************************************************/
952 1188
953static int 1189void
954any_pending (EV_P) 1190ev_invoke (EV_P_ void *w, int revents)
955{ 1191{
956 int pri; 1192 EV_CB_INVOKE ((W)w, revents);
957
958 for (pri = NUMPRI; pri--; )
959 if (pendingcnt [pri])
960 return 1;
961
962 return 0;
963} 1193}
964 1194
965static void 1195void inline_speed
966call_pending (EV_P) 1196call_pending (EV_P)
967{ 1197{
968 int pri; 1198 int pri;
969 1199
970 for (pri = NUMPRI; pri--; ) 1200 for (pri = NUMPRI; pri--; )
971 while (pendingcnt [pri]) 1201 while (pendingcnt [pri])
972 { 1202 {
973 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
974 1204
975 if (p->w) 1205 if (expect_true (p->w))
976 { 1206 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
977 p->w->pending = 0; 1209 p->w->pending = 0;
978 EV_CB_INVOKE (p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
979 } 1211 }
980 } 1212 }
981} 1213}
982 1214
983static void 1215void inline_size
984timers_reify (EV_P) 1216timers_reify (EV_P)
985{ 1217{
986 while (timercnt && ((WT)timers [0])->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
987 { 1219 {
988 struct ev_timer *w = timers [0]; 1220 ev_timer *w = timers [0];
989 1221
990 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
991 1223
992 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
993 if (w->repeat) 1225 if (w->repeat)
994 { 1226 {
995 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1227 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1005 1237
1006 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1007 } 1239 }
1008} 1240}
1009 1241
1010#if EV_PERIODICS 1242#if EV_PERIODIC_ENABLE
1011static void 1243void inline_size
1012periodics_reify (EV_P) 1244periodics_reify (EV_P)
1013{ 1245{
1014 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1015 { 1247 {
1016 struct ev_periodic *w = periodics [0]; 1248 ev_periodic *w = periodics [0];
1017 1249
1018 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1019 1251
1020 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
1021 if (w->reschedule_cb) 1253 if (w->reschedule_cb)
1022 { 1254 {
1023 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1024
1025 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026 downheap ((WT *)periodics, periodiccnt, 0); 1257 downheap ((WT *)periodics, periodiccnt, 0);
1027 } 1258 }
1028 else if (w->interval) 1259 else if (w->interval)
1029 { 1260 {
1030 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1261 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1031 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1263 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1032 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap ((WT *)periodics, periodiccnt, 0);
1033 } 1265 }
1034 else 1266 else
1035 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1036 1268
1037 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1038 } 1270 }
1039} 1271}
1040 1272
1041static void 1273static void noinline
1042periodics_reschedule (EV_P) 1274periodics_reschedule (EV_P)
1043{ 1275{
1044 int i; 1276 int i;
1045 1277
1046 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
1047 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
1048 { 1280 {
1049 struct ev_periodic *w = periodics [i]; 1281 ev_periodic *w = periodics [i];
1050 1282
1051 if (w->reschedule_cb) 1283 if (w->reschedule_cb)
1052 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1053 else if (w->interval) 1285 else if (w->interval)
1054 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1055 } 1287 }
1056 1288
1057 /* now rebuild the heap */ 1289 /* now rebuild the heap */
1058 for (i = periodiccnt >> 1; i--; ) 1290 for (i = periodiccnt >> 1; i--; )
1059 downheap ((WT *)periodics, periodiccnt, i); 1291 downheap ((WT *)periodics, periodiccnt, i);
1060} 1292}
1061#endif 1293#endif
1062 1294
1063inline int 1295#if EV_IDLE_ENABLE
1064time_update_monotonic (EV_P) 1296void inline_size
1297idle_reify (EV_P)
1065{ 1298{
1299 if (expect_false (idleall))
1300 {
1301 int pri;
1302
1303 for (pri = NUMPRI; pri--; )
1304 {
1305 if (pendingcnt [pri])
1306 break;
1307
1308 if (idlecnt [pri])
1309 {
1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311 break;
1312 }
1313 }
1314 }
1315}
1316#endif
1317
1318void inline_speed
1319time_update (EV_P_ ev_tstamp max_block)
1320{
1321 int i;
1322
1323#if EV_USE_MONOTONIC
1324 if (expect_true (have_monotonic))
1325 {
1326 ev_tstamp odiff = rtmn_diff;
1327
1066 mn_now = get_clock (); 1328 mn_now = get_clock ();
1067 1329
1330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1331 /* interpolate in the meantime */
1068 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1069 { 1333 {
1070 ev_rt_now = rtmn_diff + mn_now; 1334 ev_rt_now = rtmn_diff + mn_now;
1071 return 0; 1335 return;
1072 } 1336 }
1073 else 1337
1074 {
1075 now_floor = mn_now; 1338 now_floor = mn_now;
1076 ev_rt_now = ev_time (); 1339 ev_rt_now = ev_time ();
1077 return 1;
1078 }
1079}
1080 1340
1081static void 1341 /* loop a few times, before making important decisions.
1082time_update (EV_P) 1342 * on the choice of "4": one iteration isn't enough,
1083{ 1343 * in case we get preempted during the calls to
1084 int i; 1344 * ev_time and get_clock. a second call is almost guaranteed
1085 1345 * to succeed in that case, though. and looping a few more times
1086#if EV_USE_MONOTONIC 1346 * doesn't hurt either as we only do this on time-jumps or
1087 if (expect_true (have_monotonic)) 1347 * in the unlikely event of having been preempted here.
1088 { 1348 */
1089 if (time_update_monotonic (EV_A)) 1349 for (i = 4; --i; )
1090 { 1350 {
1091 ev_tstamp odiff = rtmn_diff;
1092
1093 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1094 {
1095 rtmn_diff = ev_rt_now - mn_now; 1351 rtmn_diff = ev_rt_now - mn_now;
1096 1352
1097 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1098 return; /* all is well */ 1354 return; /* all is well */
1099 1355
1100 ev_rt_now = ev_time (); 1356 ev_rt_now = ev_time ();
1101 mn_now = get_clock (); 1357 mn_now = get_clock ();
1102 now_floor = mn_now; 1358 now_floor = mn_now;
1103 } 1359 }
1104 1360
1105# if EV_PERIODICS 1361# if EV_PERIODIC_ENABLE
1362 periodics_reschedule (EV_A);
1363# endif
1364 /* no timer adjustment, as the monotonic clock doesn't jump */
1365 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1366 }
1367 else
1368#endif
1369 {
1370 ev_rt_now = ev_time ();
1371
1372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373 {
1374#if EV_PERIODIC_ENABLE
1106 periodics_reschedule (EV_A); 1375 periodics_reschedule (EV_A);
1107# endif 1376#endif
1108 /* no timer adjustment, as the monotonic clock doesn't jump */
1109 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1110 }
1111 }
1112 else
1113#endif
1114 {
1115 ev_rt_now = ev_time ();
1116
1117 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1118 {
1119#if EV_PERIODICS
1120 periodics_reschedule (EV_A);
1121#endif
1122
1123 /* adjust timers. this is easy, as the offset is the same for all */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
1124 for (i = 0; i < timercnt; ++i) 1378 for (i = 0; i < timercnt; ++i)
1125 ((WT)timers [i])->at += ev_rt_now - mn_now; 1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
1126 } 1380 }
1127 1381
1128 mn_now = ev_rt_now; 1382 mn_now = ev_rt_now;
… …
1144static int loop_done; 1398static int loop_done;
1145 1399
1146void 1400void
1147ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
1148{ 1402{
1149 double block;
1150 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1404 ? EVUNLOOP_ONE
1405 : EVUNLOOP_CANCEL;
1406
1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1151 1408
1152 do 1409 do
1153 { 1410 {
1411#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid))
1414 {
1415 curpid = getpid ();
1416 postfork = 1;
1417 }
1418#endif
1419
1420#if EV_FORK_ENABLE
1421 /* we might have forked, so queue fork handlers */
1422 if (expect_false (postfork))
1423 if (forkcnt)
1424 {
1425 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426 call_pending (EV_A);
1427 }
1428#endif
1429
1154 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
1155 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
1156 { 1432 {
1157 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1158 call_pending (EV_A); 1434 call_pending (EV_A);
1159 } 1435 }
1160 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1161 /* we might have forked, so reify kernel state if necessary */ 1440 /* we might have forked, so reify kernel state if necessary */
1162 if (expect_false (postfork)) 1441 if (expect_false (postfork))
1163 loop_fork (EV_A); 1442 loop_fork (EV_A);
1164 1443
1165 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
1166 fd_reify (EV_A); 1445 fd_reify (EV_A);
1167 1446
1168 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
1169 1450
1170 /* we only need this for !monotonic clock or timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1171 always have timers, we just calculate it always */ 1452 block = 0.; /* do not block at all */
1172#if EV_USE_MONOTONIC
1173 if (expect_true (have_monotonic))
1174 time_update_monotonic (EV_A);
1175 else 1453 else
1176#endif
1177 { 1454 {
1178 ev_rt_now = ev_time (); 1455 /* update time to cancel out callback processing overhead */
1179 mn_now = ev_rt_now; 1456 time_update (EV_A_ 1e100);
1180 }
1181 1457
1182 if (flags & EVLOOP_NONBLOCK || idlecnt)
1183 block = 0.;
1184 else
1185 {
1186 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
1187 1459
1188 if (timercnt) 1460 if (timercnt)
1189 { 1461 {
1190 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1191 if (block > to) block = to; 1463 if (block > to) block = to;
1192 } 1464 }
1193 1465
1194#if EV_PERIODICS 1466#if EV_PERIODIC_ENABLE
1195 if (periodiccnt) 1467 if (periodiccnt)
1196 { 1468 {
1197 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1198 if (block > to) block = to; 1470 if (block > to) block = to;
1199 } 1471 }
1200#endif 1472#endif
1201 1473
1202 if (block < 0.) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
1203 } 1475 }
1204 1476
1477 ++loop_count;
1205 method_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
1206 1479
1207 /* update ev_rt_now, do magic */ 1480 /* update ev_rt_now, do magic */
1208 time_update (EV_A); 1481 time_update (EV_A_ block);
1482 }
1209 1483
1210 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
1211 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1212#if EV_PERIODICS 1486#if EV_PERIODIC_ENABLE
1213 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1214#endif 1488#endif
1215 1489
1490#if EV_IDLE_ENABLE
1216 /* queue idle watchers unless io or timers are pending */ 1491 /* queue idle watchers unless other events are pending */
1217 if (idlecnt && !any_pending (EV_A)) 1492 idle_reify (EV_A);
1218 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
1219 1494
1220 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
1221 if (checkcnt) 1496 if (expect_false (checkcnt))
1222 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1223 1498
1224 call_pending (EV_A); 1499 call_pending (EV_A);
1500
1225 } 1501 }
1226 while (activecnt && !loop_done); 1502 while (expect_true (activecnt && !loop_done));
1227 1503
1228 if (loop_done != 2) 1504 if (loop_done == EVUNLOOP_ONE)
1229 loop_done = 0; 1505 loop_done = EVUNLOOP_CANCEL;
1230} 1506}
1231 1507
1232void 1508void
1233ev_unloop (EV_P_ int how) 1509ev_unloop (EV_P_ int how)
1234{ 1510{
1235 loop_done = how; 1511 loop_done = how;
1236} 1512}
1237 1513
1238/*****************************************************************************/ 1514/*****************************************************************************/
1239 1515
1240inline void 1516void inline_size
1241wlist_add (WL *head, WL elem) 1517wlist_add (WL *head, WL elem)
1242{ 1518{
1243 elem->next = *head; 1519 elem->next = *head;
1244 *head = elem; 1520 *head = elem;
1245} 1521}
1246 1522
1247inline void 1523void inline_size
1248wlist_del (WL *head, WL elem) 1524wlist_del (WL *head, WL elem)
1249{ 1525{
1250 while (*head) 1526 while (*head)
1251 { 1527 {
1252 if (*head == elem) 1528 if (*head == elem)
… …
1257 1533
1258 head = &(*head)->next; 1534 head = &(*head)->next;
1259 } 1535 }
1260} 1536}
1261 1537
1262inline void 1538void inline_speed
1263ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
1264{ 1540{
1265 if (w->pending) 1541 if (w->pending)
1266 { 1542 {
1267 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1268 w->pending = 0; 1544 w->pending = 0;
1269 } 1545 }
1270} 1546}
1271 1547
1272inline void 1548int
1549ev_clear_pending (EV_P_ void *w)
1550{
1551 W w_ = (W)w;
1552 int pending = w_->pending;
1553
1554 if (expect_true (pending))
1555 {
1556 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1557 w_->pending = 0;
1558 p->w = 0;
1559 return p->events;
1560 }
1561 else
1562 return 0;
1563}
1564
1565void inline_size
1566pri_adjust (EV_P_ W w)
1567{
1568 int pri = w->priority;
1569 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571 w->priority = pri;
1572}
1573
1574void inline_speed
1273ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
1274{ 1576{
1275 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
1276 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1277
1278 w->active = active; 1578 w->active = active;
1279 ev_ref (EV_A); 1579 ev_ref (EV_A);
1280} 1580}
1281 1581
1282inline void 1582void inline_size
1283ev_stop (EV_P_ W w) 1583ev_stop (EV_P_ W w)
1284{ 1584{
1285 ev_unref (EV_A); 1585 ev_unref (EV_A);
1286 w->active = 0; 1586 w->active = 0;
1287} 1587}
1288 1588
1289/*****************************************************************************/ 1589/*****************************************************************************/
1290 1590
1291void 1591void noinline
1292ev_io_start (EV_P_ struct ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
1293{ 1593{
1294 int fd = w->fd; 1594 int fd = w->fd;
1295 1595
1296 if (ev_is_active (w)) 1596 if (expect_false (ev_is_active (w)))
1297 return; 1597 return;
1298 1598
1299 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
1300 1600
1301 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
… …
1303 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1304 1604
1305 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd);
1306} 1606}
1307 1607
1308void 1608void noinline
1309ev_io_stop (EV_P_ struct ev_io *w) 1609ev_io_stop (EV_P_ ev_io *w)
1310{ 1610{
1311 ev_clear_pending (EV_A_ (W)w); 1611 clear_pending (EV_A_ (W)w);
1312 if (!ev_is_active (w)) 1612 if (expect_false (!ev_is_active (w)))
1313 return; 1613 return;
1314 1614
1315 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1615 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316 1616
1317 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1617 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1318 ev_stop (EV_A_ (W)w); 1618 ev_stop (EV_A_ (W)w);
1319 1619
1320 fd_change (EV_A_ w->fd); 1620 fd_change (EV_A_ w->fd);
1321} 1621}
1322 1622
1323void 1623void noinline
1324ev_timer_start (EV_P_ struct ev_timer *w) 1624ev_timer_start (EV_P_ ev_timer *w)
1325{ 1625{
1326 if (ev_is_active (w)) 1626 if (expect_false (ev_is_active (w)))
1327 return; 1627 return;
1328 1628
1329 ((WT)w)->at += mn_now; 1629 ((WT)w)->at += mn_now;
1330 1630
1331 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1631 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1332 1632
1333 ev_start (EV_A_ (W)w, ++timercnt); 1633 ev_start (EV_A_ (W)w, ++timercnt);
1334 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1634 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1335 timers [timercnt - 1] = w; 1635 timers [timercnt - 1] = w;
1336 upheap ((WT *)timers, timercnt - 1); 1636 upheap ((WT *)timers, timercnt - 1);
1337 1637
1638 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1639}
1640
1641void noinline
1642ev_timer_stop (EV_P_ ev_timer *w)
1643{
1644 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w)))
1646 return;
1647
1338 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1648 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1339}
1340 1649
1341void 1650 {
1342ev_timer_stop (EV_P_ struct ev_timer *w) 1651 int active = ((W)w)->active;
1343{
1344 ev_clear_pending (EV_A_ (W)w);
1345 if (!ev_is_active (w))
1346 return;
1347 1652
1348 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1653 if (expect_true (--active < --timercnt))
1349
1350 if (((W)w)->active < timercnt--)
1351 { 1654 {
1352 timers [((W)w)->active - 1] = timers [timercnt]; 1655 timers [active] = timers [timercnt];
1353 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1656 adjustheap ((WT *)timers, timercnt, active);
1354 } 1657 }
1658 }
1355 1659
1356 ((WT)w)->at -= mn_now; 1660 ((WT)w)->at -= mn_now;
1357 1661
1358 ev_stop (EV_A_ (W)w); 1662 ev_stop (EV_A_ (W)w);
1359} 1663}
1360 1664
1361void 1665void noinline
1362ev_timer_again (EV_P_ struct ev_timer *w) 1666ev_timer_again (EV_P_ ev_timer *w)
1363{ 1667{
1364 if (ev_is_active (w)) 1668 if (ev_is_active (w))
1365 { 1669 {
1366 if (w->repeat) 1670 if (w->repeat)
1367 { 1671 {
… …
1370 } 1674 }
1371 else 1675 else
1372 ev_timer_stop (EV_A_ w); 1676 ev_timer_stop (EV_A_ w);
1373 } 1677 }
1374 else if (w->repeat) 1678 else if (w->repeat)
1679 {
1680 w->at = w->repeat;
1375 ev_timer_start (EV_A_ w); 1681 ev_timer_start (EV_A_ w);
1682 }
1376} 1683}
1377 1684
1378#if EV_PERIODICS 1685#if EV_PERIODIC_ENABLE
1379void 1686void noinline
1380ev_periodic_start (EV_P_ struct ev_periodic *w) 1687ev_periodic_start (EV_P_ ev_periodic *w)
1381{ 1688{
1382 if (ev_is_active (w)) 1689 if (expect_false (ev_is_active (w)))
1383 return; 1690 return;
1384 1691
1385 if (w->reschedule_cb) 1692 if (w->reschedule_cb)
1386 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1693 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387 else if (w->interval) 1694 else if (w->interval)
1388 { 1695 {
1389 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1696 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1390 /* this formula differs from the one in periodic_reify because we do not always round up */ 1697 /* this formula differs from the one in periodic_reify because we do not always round up */
1391 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1698 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1392 } 1699 }
1700 else
1701 ((WT)w)->at = w->offset;
1393 1702
1394 ev_start (EV_A_ (W)w, ++periodiccnt); 1703 ev_start (EV_A_ (W)w, ++periodiccnt);
1395 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1704 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1396 periodics [periodiccnt - 1] = w; 1705 periodics [periodiccnt - 1] = w;
1397 upheap ((WT *)periodics, periodiccnt - 1); 1706 upheap ((WT *)periodics, periodiccnt - 1);
1398 1707
1708 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1709}
1710
1711void noinline
1712ev_periodic_stop (EV_P_ ev_periodic *w)
1713{
1714 clear_pending (EV_A_ (W)w);
1715 if (expect_false (!ev_is_active (w)))
1716 return;
1717
1399 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1718 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1400}
1401 1719
1402void 1720 {
1403ev_periodic_stop (EV_P_ struct ev_periodic *w) 1721 int active = ((W)w)->active;
1404{
1405 ev_clear_pending (EV_A_ (W)w);
1406 if (!ev_is_active (w))
1407 return;
1408 1722
1409 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1723 if (expect_true (--active < --periodiccnt))
1410
1411 if (((W)w)->active < periodiccnt--)
1412 { 1724 {
1413 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1725 periodics [active] = periodics [periodiccnt];
1414 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1726 adjustheap ((WT *)periodics, periodiccnt, active);
1415 } 1727 }
1728 }
1416 1729
1417 ev_stop (EV_A_ (W)w); 1730 ev_stop (EV_A_ (W)w);
1418} 1731}
1419 1732
1420void 1733void noinline
1421ev_periodic_again (EV_P_ struct ev_periodic *w) 1734ev_periodic_again (EV_P_ ev_periodic *w)
1422{ 1735{
1423 /* TODO: use adjustheap and recalculation */ 1736 /* TODO: use adjustheap and recalculation */
1424 ev_periodic_stop (EV_A_ w); 1737 ev_periodic_stop (EV_A_ w);
1425 ev_periodic_start (EV_A_ w); 1738 ev_periodic_start (EV_A_ w);
1426} 1739}
1427#endif 1740#endif
1428 1741
1429void
1430ev_idle_start (EV_P_ struct ev_idle *w)
1431{
1432 if (ev_is_active (w))
1433 return;
1434
1435 ev_start (EV_A_ (W)w, ++idlecnt);
1436 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1437 idles [idlecnt - 1] = w;
1438}
1439
1440void
1441ev_idle_stop (EV_P_ struct ev_idle *w)
1442{
1443 ev_clear_pending (EV_A_ (W)w);
1444 if (!ev_is_active (w))
1445 return;
1446
1447 idles [((W)w)->active - 1] = idles [--idlecnt];
1448 ev_stop (EV_A_ (W)w);
1449}
1450
1451void
1452ev_prepare_start (EV_P_ struct ev_prepare *w)
1453{
1454 if (ev_is_active (w))
1455 return;
1456
1457 ev_start (EV_A_ (W)w, ++preparecnt);
1458 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1459 prepares [preparecnt - 1] = w;
1460}
1461
1462void
1463ev_prepare_stop (EV_P_ struct ev_prepare *w)
1464{
1465 ev_clear_pending (EV_A_ (W)w);
1466 if (!ev_is_active (w))
1467 return;
1468
1469 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1470 ev_stop (EV_A_ (W)w);
1471}
1472
1473void
1474ev_check_start (EV_P_ struct ev_check *w)
1475{
1476 if (ev_is_active (w))
1477 return;
1478
1479 ev_start (EV_A_ (W)w, ++checkcnt);
1480 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1481 checks [checkcnt - 1] = w;
1482}
1483
1484void
1485ev_check_stop (EV_P_ struct ev_check *w)
1486{
1487 ev_clear_pending (EV_A_ (W)w);
1488 if (!ev_is_active (w))
1489 return;
1490
1491 checks [((W)w)->active - 1] = checks [--checkcnt];
1492 ev_stop (EV_A_ (W)w);
1493}
1494
1495#ifndef SA_RESTART 1742#ifndef SA_RESTART
1496# define SA_RESTART 0 1743# define SA_RESTART 0
1497#endif 1744#endif
1498 1745
1499void 1746void noinline
1500ev_signal_start (EV_P_ struct ev_signal *w) 1747ev_signal_start (EV_P_ ev_signal *w)
1501{ 1748{
1502#if EV_MULTIPLICITY 1749#if EV_MULTIPLICITY
1503 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1750 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1504#endif 1751#endif
1505 if (ev_is_active (w)) 1752 if (expect_false (ev_is_active (w)))
1506 return; 1753 return;
1507 1754
1508 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1755 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1509 1756
1510 ev_start (EV_A_ (W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
1511 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1758 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1512 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1759 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1513 1760
1514 if (!((WL)w)->next) 1761 if (!((WL)w)->next)
1515 { 1762 {
1516#if WIN32 1763#if _WIN32
1517 signal (w->signum, sighandler); 1764 signal (w->signum, sighandler);
1518#else 1765#else
1519 struct sigaction sa; 1766 struct sigaction sa;
1520 sa.sa_handler = sighandler; 1767 sa.sa_handler = sighandler;
1521 sigfillset (&sa.sa_mask); 1768 sigfillset (&sa.sa_mask);
… …
1523 sigaction (w->signum, &sa, 0); 1770 sigaction (w->signum, &sa, 0);
1524#endif 1771#endif
1525 } 1772 }
1526} 1773}
1527 1774
1528void 1775void noinline
1529ev_signal_stop (EV_P_ struct ev_signal *w) 1776ev_signal_stop (EV_P_ ev_signal *w)
1530{ 1777{
1531 ev_clear_pending (EV_A_ (W)w); 1778 clear_pending (EV_A_ (W)w);
1532 if (!ev_is_active (w)) 1779 if (expect_false (!ev_is_active (w)))
1533 return; 1780 return;
1534 1781
1535 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1782 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1536 ev_stop (EV_A_ (W)w); 1783 ev_stop (EV_A_ (W)w);
1537 1784
1538 if (!signals [w->signum - 1].head) 1785 if (!signals [w->signum - 1].head)
1539 signal (w->signum, SIG_DFL); 1786 signal (w->signum, SIG_DFL);
1540} 1787}
1541 1788
1542void 1789void
1543ev_child_start (EV_P_ struct ev_child *w) 1790ev_child_start (EV_P_ ev_child *w)
1544{ 1791{
1545#if EV_MULTIPLICITY 1792#if EV_MULTIPLICITY
1546 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1793 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1547#endif 1794#endif
1548 if (ev_is_active (w)) 1795 if (expect_false (ev_is_active (w)))
1549 return; 1796 return;
1550 1797
1551 ev_start (EV_A_ (W)w, 1); 1798 ev_start (EV_A_ (W)w, 1);
1552 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1799 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1553} 1800}
1554 1801
1555void 1802void
1556ev_child_stop (EV_P_ struct ev_child *w) 1803ev_child_stop (EV_P_ ev_child *w)
1557{ 1804{
1558 ev_clear_pending (EV_A_ (W)w); 1805 clear_pending (EV_A_ (W)w);
1559 if (!ev_is_active (w)) 1806 if (expect_false (!ev_is_active (w)))
1560 return; 1807 return;
1561 1808
1562 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1809 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1563 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1564} 1811}
1565 1812
1813#if EV_STAT_ENABLE
1814
1815# ifdef _WIN32
1816# undef lstat
1817# define lstat(a,b) _stati64 (a,b)
1818# endif
1819
1820#define DEF_STAT_INTERVAL 5.0074891
1821#define MIN_STAT_INTERVAL 0.1074891
1822
1823static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1824
1825#if EV_USE_INOTIFY
1826# define EV_INOTIFY_BUFSIZE 8192
1827
1828static void noinline
1829infy_add (EV_P_ ev_stat *w)
1830{
1831 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);
1832
1833 if (w->wd < 0)
1834 {
1835 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1836
1837 /* monitor some parent directory for speedup hints */
1838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1839 {
1840 char path [4096];
1841 strcpy (path, w->path);
1842
1843 do
1844 {
1845 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1846 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1847
1848 char *pend = strrchr (path, '/');
1849
1850 if (!pend)
1851 break; /* whoops, no '/', complain to your admin */
1852
1853 *pend = 0;
1854 w->wd = inotify_add_watch (fs_fd, path, mask);
1855 }
1856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1857 }
1858 }
1859 else
1860 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1861
1862 if (w->wd >= 0)
1863 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1864}
1865
1866static void noinline
1867infy_del (EV_P_ ev_stat *w)
1868{
1869 int slot;
1870 int wd = w->wd;
1871
1872 if (wd < 0)
1873 return;
1874
1875 w->wd = -2;
1876 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1877 wlist_del (&fs_hash [slot].head, (WL)w);
1878
1879 /* remove this watcher, if others are watching it, they will rearm */
1880 inotify_rm_watch (fs_fd, wd);
1881}
1882
1883static void noinline
1884infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1885{
1886 if (slot < 0)
1887 /* overflow, need to check for all hahs slots */
1888 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1889 infy_wd (EV_A_ slot, wd, ev);
1890 else
1891 {
1892 WL w_;
1893
1894 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1895 {
1896 ev_stat *w = (ev_stat *)w_;
1897 w_ = w_->next; /* lets us remove this watcher and all before it */
1898
1899 if (w->wd == wd || wd == -1)
1900 {
1901 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1902 {
1903 w->wd = -1;
1904 infy_add (EV_A_ w); /* re-add, no matter what */
1905 }
1906
1907 stat_timer_cb (EV_A_ &w->timer, 0);
1908 }
1909 }
1910 }
1911}
1912
1913static void
1914infy_cb (EV_P_ ev_io *w, int revents)
1915{
1916 char buf [EV_INOTIFY_BUFSIZE];
1917 struct inotify_event *ev = (struct inotify_event *)buf;
1918 int ofs;
1919 int len = read (fs_fd, buf, sizeof (buf));
1920
1921 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1922 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1923}
1924
1925void inline_size
1926infy_init (EV_P)
1927{
1928 if (fs_fd != -2)
1929 return;
1930
1931 fs_fd = inotify_init ();
1932
1933 if (fs_fd >= 0)
1934 {
1935 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1936 ev_set_priority (&fs_w, EV_MAXPRI);
1937 ev_io_start (EV_A_ &fs_w);
1938 }
1939}
1940
1941void inline_size
1942infy_fork (EV_P)
1943{
1944 int slot;
1945
1946 if (fs_fd < 0)
1947 return;
1948
1949 close (fs_fd);
1950 fs_fd = inotify_init ();
1951
1952 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1953 {
1954 WL w_ = fs_hash [slot].head;
1955 fs_hash [slot].head = 0;
1956
1957 while (w_)
1958 {
1959 ev_stat *w = (ev_stat *)w_;
1960 w_ = w_->next; /* lets us add this watcher */
1961
1962 w->wd = -1;
1963
1964 if (fs_fd >= 0)
1965 infy_add (EV_A_ w); /* re-add, no matter what */
1966 else
1967 ev_timer_start (EV_A_ &w->timer);
1968 }
1969
1970 }
1971}
1972
1973#endif
1974
1975void
1976ev_stat_stat (EV_P_ ev_stat *w)
1977{
1978 if (lstat (w->path, &w->attr) < 0)
1979 w->attr.st_nlink = 0;
1980 else if (!w->attr.st_nlink)
1981 w->attr.st_nlink = 1;
1982}
1983
1984static void noinline
1985stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1986{
1987 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1988
1989 /* we copy this here each the time so that */
1990 /* prev has the old value when the callback gets invoked */
1991 w->prev = w->attr;
1992 ev_stat_stat (EV_A_ w);
1993
1994 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1995 if (
1996 w->prev.st_dev != w->attr.st_dev
1997 || w->prev.st_ino != w->attr.st_ino
1998 || w->prev.st_mode != w->attr.st_mode
1999 || w->prev.st_nlink != w->attr.st_nlink
2000 || w->prev.st_uid != w->attr.st_uid
2001 || w->prev.st_gid != w->attr.st_gid
2002 || w->prev.st_rdev != w->attr.st_rdev
2003 || w->prev.st_size != w->attr.st_size
2004 || w->prev.st_atime != w->attr.st_atime
2005 || w->prev.st_mtime != w->attr.st_mtime
2006 || w->prev.st_ctime != w->attr.st_ctime
2007 ) {
2008 #if EV_USE_INOTIFY
2009 infy_del (EV_A_ w);
2010 infy_add (EV_A_ w);
2011 ev_stat_stat (EV_A_ w); /* avoid race... */
2012 #endif
2013
2014 ev_feed_event (EV_A_ w, EV_STAT);
2015 }
2016}
2017
2018void
2019ev_stat_start (EV_P_ ev_stat *w)
2020{
2021 if (expect_false (ev_is_active (w)))
2022 return;
2023
2024 /* since we use memcmp, we need to clear any padding data etc. */
2025 memset (&w->prev, 0, sizeof (ev_statdata));
2026 memset (&w->attr, 0, sizeof (ev_statdata));
2027
2028 ev_stat_stat (EV_A_ w);
2029
2030 if (w->interval < MIN_STAT_INTERVAL)
2031 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2032
2033 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2034 ev_set_priority (&w->timer, ev_priority (w));
2035
2036#if EV_USE_INOTIFY
2037 infy_init (EV_A);
2038
2039 if (fs_fd >= 0)
2040 infy_add (EV_A_ w);
2041 else
2042#endif
2043 ev_timer_start (EV_A_ &w->timer);
2044
2045 ev_start (EV_A_ (W)w, 1);
2046}
2047
2048void
2049ev_stat_stop (EV_P_ ev_stat *w)
2050{
2051 clear_pending (EV_A_ (W)w);
2052 if (expect_false (!ev_is_active (w)))
2053 return;
2054
2055#if EV_USE_INOTIFY
2056 infy_del (EV_A_ w);
2057#endif
2058 ev_timer_stop (EV_A_ &w->timer);
2059
2060 ev_stop (EV_A_ (W)w);
2061}
2062#endif
2063
2064#if EV_IDLE_ENABLE
2065void
2066ev_idle_start (EV_P_ ev_idle *w)
2067{
2068 if (expect_false (ev_is_active (w)))
2069 return;
2070
2071 pri_adjust (EV_A_ (W)w);
2072
2073 {
2074 int active = ++idlecnt [ABSPRI (w)];
2075
2076 ++idleall;
2077 ev_start (EV_A_ (W)w, active);
2078
2079 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2080 idles [ABSPRI (w)][active - 1] = w;
2081 }
2082}
2083
2084void
2085ev_idle_stop (EV_P_ ev_idle *w)
2086{
2087 clear_pending (EV_A_ (W)w);
2088 if (expect_false (!ev_is_active (w)))
2089 return;
2090
2091 {
2092 int active = ((W)w)->active;
2093
2094 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2095 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2096
2097 ev_stop (EV_A_ (W)w);
2098 --idleall;
2099 }
2100}
2101#endif
2102
2103void
2104ev_prepare_start (EV_P_ ev_prepare *w)
2105{
2106 if (expect_false (ev_is_active (w)))
2107 return;
2108
2109 ev_start (EV_A_ (W)w, ++preparecnt);
2110 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2111 prepares [preparecnt - 1] = w;
2112}
2113
2114void
2115ev_prepare_stop (EV_P_ ev_prepare *w)
2116{
2117 clear_pending (EV_A_ (W)w);
2118 if (expect_false (!ev_is_active (w)))
2119 return;
2120
2121 {
2122 int active = ((W)w)->active;
2123 prepares [active - 1] = prepares [--preparecnt];
2124 ((W)prepares [active - 1])->active = active;
2125 }
2126
2127 ev_stop (EV_A_ (W)w);
2128}
2129
2130void
2131ev_check_start (EV_P_ ev_check *w)
2132{
2133 if (expect_false (ev_is_active (w)))
2134 return;
2135
2136 ev_start (EV_A_ (W)w, ++checkcnt);
2137 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2138 checks [checkcnt - 1] = w;
2139}
2140
2141void
2142ev_check_stop (EV_P_ ev_check *w)
2143{
2144 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w)))
2146 return;
2147
2148 {
2149 int active = ((W)w)->active;
2150 checks [active - 1] = checks [--checkcnt];
2151 ((W)checks [active - 1])->active = active;
2152 }
2153
2154 ev_stop (EV_A_ (W)w);
2155}
2156
2157#if EV_EMBED_ENABLE
2158void noinline
2159ev_embed_sweep (EV_P_ ev_embed *w)
2160{
2161 ev_loop (w->loop, EVLOOP_NONBLOCK);
2162}
2163
2164static void
2165embed_cb (EV_P_ ev_io *io, int revents)
2166{
2167 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2168
2169 if (ev_cb (w))
2170 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2171 else
2172 ev_embed_sweep (loop, w);
2173}
2174
2175void
2176ev_embed_start (EV_P_ ev_embed *w)
2177{
2178 if (expect_false (ev_is_active (w)))
2179 return;
2180
2181 {
2182 struct ev_loop *loop = w->loop;
2183 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2184 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2185 }
2186
2187 ev_set_priority (&w->io, ev_priority (w));
2188 ev_io_start (EV_A_ &w->io);
2189
2190 ev_start (EV_A_ (W)w, 1);
2191}
2192
2193void
2194ev_embed_stop (EV_P_ ev_embed *w)
2195{
2196 clear_pending (EV_A_ (W)w);
2197 if (expect_false (!ev_is_active (w)))
2198 return;
2199
2200 ev_io_stop (EV_A_ &w->io);
2201
2202 ev_stop (EV_A_ (W)w);
2203}
2204#endif
2205
2206#if EV_FORK_ENABLE
2207void
2208ev_fork_start (EV_P_ ev_fork *w)
2209{
2210 if (expect_false (ev_is_active (w)))
2211 return;
2212
2213 ev_start (EV_A_ (W)w, ++forkcnt);
2214 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2215 forks [forkcnt - 1] = w;
2216}
2217
2218void
2219ev_fork_stop (EV_P_ ev_fork *w)
2220{
2221 clear_pending (EV_A_ (W)w);
2222 if (expect_false (!ev_is_active (w)))
2223 return;
2224
2225 {
2226 int active = ((W)w)->active;
2227 forks [active - 1] = forks [--forkcnt];
2228 ((W)forks [active - 1])->active = active;
2229 }
2230
2231 ev_stop (EV_A_ (W)w);
2232}
2233#endif
2234
1566/*****************************************************************************/ 2235/*****************************************************************************/
1567 2236
1568struct ev_once 2237struct ev_once
1569{ 2238{
1570 struct ev_io io; 2239 ev_io io;
1571 struct ev_timer to; 2240 ev_timer to;
1572 void (*cb)(int revents, void *arg); 2241 void (*cb)(int revents, void *arg);
1573 void *arg; 2242 void *arg;
1574}; 2243};
1575 2244
1576static void 2245static void
… …
1585 2254
1586 cb (revents, arg); 2255 cb (revents, arg);
1587} 2256}
1588 2257
1589static void 2258static void
1590once_cb_io (EV_P_ struct ev_io *w, int revents) 2259once_cb_io (EV_P_ ev_io *w, int revents)
1591{ 2260{
1592 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1593} 2262}
1594 2263
1595static void 2264static void
1596once_cb_to (EV_P_ struct ev_timer *w, int revents) 2265once_cb_to (EV_P_ ev_timer *w, int revents)
1597{ 2266{
1598 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2267 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1599} 2268}
1600 2269
1601void 2270void
1602ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1603{ 2272{
1604 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1605 2274
1606 if (!once) 2275 if (expect_false (!once))
2276 {
1607 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1608 else 2278 return;
1609 { 2279 }
2280
1610 once->cb = cb; 2281 once->cb = cb;
1611 once->arg = arg; 2282 once->arg = arg;
1612 2283
1613 ev_init (&once->io, once_cb_io); 2284 ev_init (&once->io, once_cb_io);
1614 if (fd >= 0) 2285 if (fd >= 0)
1615 { 2286 {
1616 ev_io_set (&once->io, fd, events); 2287 ev_io_set (&once->io, fd, events);
1617 ev_io_start (EV_A_ &once->io); 2288 ev_io_start (EV_A_ &once->io);
1618 } 2289 }
1619 2290
1620 ev_init (&once->to, once_cb_to); 2291 ev_init (&once->to, once_cb_to);
1621 if (timeout >= 0.) 2292 if (timeout >= 0.)
1622 { 2293 {
1623 ev_timer_set (&once->to, timeout, 0.); 2294 ev_timer_set (&once->to, timeout, 0.);
1624 ev_timer_start (EV_A_ &once->to); 2295 ev_timer_start (EV_A_ &once->to);
1625 }
1626 } 2296 }
1627} 2297}
1628 2298
1629#ifdef __cplusplus 2299#ifdef __cplusplus
1630} 2300}

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