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Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 2007 UTC vs.
Revision 1.174 by root, Tue Dec 11 03:18:33 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#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
224
146#if __GNUC__ >= 3 225#if __GNUC__ >= 3
147# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 227# define noinline __attribute__ ((noinline))
149#else 228#else
150# define expect(expr,value) (expr) 229# define expect(expr,value) (expr)
151# define inline static 230# define noinline
231# if __STDC_VERSION__ < 199901L
232# define inline
233# endif
152#endif 234#endif
153 235
154#define expect_false(expr) expect ((expr) != 0, 0) 236#define expect_false(expr) expect ((expr) != 0, 0)
155#define expect_true(expr) expect ((expr) != 0, 1) 237#define expect_true(expr) expect ((expr) != 0, 1)
238#define inline_size static inline
239
240#if EV_MINIMAL
241# define inline_speed static noinline
242#else
243# define inline_speed static inline
244#endif
156 245
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 248
249#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */
251
160typedef struct ev_watcher *W; 252typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 253typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 254typedef ev_watcher_time *WT;
163 255
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165 257
258#ifdef _WIN32
166#include "ev_win32.c" 259# include "ev_win32.c"
260#endif
167 261
168/*****************************************************************************/ 262/*****************************************************************************/
169 263
170static void (*syserr_cb)(const char *msg); 264static void (*syserr_cb)(const char *msg);
171 265
266void
172void ev_set_syserr_cb (void (*cb)(const char *msg)) 267ev_set_syserr_cb (void (*cb)(const char *msg))
173{ 268{
174 syserr_cb = cb; 269 syserr_cb = cb;
175} 270}
176 271
177static void 272static void noinline
178syserr (const char *msg) 273syserr (const char *msg)
179{ 274{
180 if (!msg) 275 if (!msg)
181 msg = "(libev) system error"; 276 msg = "(libev) system error";
182 277
… …
189 } 284 }
190} 285}
191 286
192static void *(*alloc)(void *ptr, long size); 287static void *(*alloc)(void *ptr, long size);
193 288
289void
194void ev_set_allocator (void *(*cb)(void *ptr, long size)) 290ev_set_allocator (void *(*cb)(void *ptr, long size))
195{ 291{
196 alloc = cb; 292 alloc = cb;
197} 293}
198 294
199static void * 295inline_speed void *
200ev_realloc (void *ptr, long size) 296ev_realloc (void *ptr, long size)
201{ 297{
202 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
203 299
204 if (!ptr && size) 300 if (!ptr && size)
… …
218typedef struct 314typedef struct
219{ 315{
220 WL head; 316 WL head;
221 unsigned char events; 317 unsigned char events;
222 unsigned char reify; 318 unsigned char reify;
319#if EV_SELECT_IS_WINSOCKET
320 SOCKET handle;
321#endif
223} ANFD; 322} ANFD;
224 323
225typedef struct 324typedef struct
226{ 325{
227 W w; 326 W w;
228 int events; 327 int events;
229} ANPENDING; 328} ANPENDING;
230 329
330#if EV_USE_INOTIFY
331typedef struct
332{
333 WL head;
334} ANFS;
335#endif
336
231#if EV_MULTIPLICITY 337#if EV_MULTIPLICITY
232 338
233 struct ev_loop 339 struct ev_loop
234 { 340 {
235 ev_tstamp ev_rt_now; 341 ev_tstamp ev_rt_now;
342 #define ev_rt_now ((loop)->ev_rt_now)
236 #define VAR(name,decl) decl; 343 #define VAR(name,decl) decl;
237 #include "ev_vars.h" 344 #include "ev_vars.h"
238 #undef VAR 345 #undef VAR
239 }; 346 };
240 #include "ev_wrap.h" 347 #include "ev_wrap.h"
241 348
242 struct ev_loop default_loop_struct; 349 static struct ev_loop default_loop_struct;
243 static struct ev_loop *default_loop; 350 struct ev_loop *ev_default_loop_ptr;
244 351
245#else 352#else
246 353
247 ev_tstamp ev_rt_now; 354 ev_tstamp ev_rt_now;
248 #define VAR(name,decl) static decl; 355 #define VAR(name,decl) static decl;
249 #include "ev_vars.h" 356 #include "ev_vars.h"
250 #undef VAR 357 #undef VAR
251 358
252 static int default_loop; 359 static int ev_default_loop_ptr;
253 360
254#endif 361#endif
255 362
256/*****************************************************************************/ 363/*****************************************************************************/
257 364
… …
267 gettimeofday (&tv, 0); 374 gettimeofday (&tv, 0);
268 return tv.tv_sec + tv.tv_usec * 1e-6; 375 return tv.tv_sec + tv.tv_usec * 1e-6;
269#endif 376#endif
270} 377}
271 378
272inline ev_tstamp 379ev_tstamp inline_size
273get_clock (void) 380get_clock (void)
274{ 381{
275#if EV_USE_MONOTONIC 382#if EV_USE_MONOTONIC
276 if (expect_true (have_monotonic)) 383 if (expect_true (have_monotonic))
277 { 384 {
… …
290{ 397{
291 return ev_rt_now; 398 return ev_rt_now;
292} 399}
293#endif 400#endif
294 401
295#define array_roundsize(type,n) ((n) | 4 & ~3) 402int inline_size
403array_nextsize (int elem, int cur, int cnt)
404{
405 int ncur = cur + 1;
406
407 do
408 ncur <<= 1;
409 while (cnt > ncur);
410
411 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
412 if (elem * ncur > 4096)
413 {
414 ncur *= elem;
415 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
416 ncur = ncur - sizeof (void *) * 4;
417 ncur /= elem;
418 }
419
420 return ncur;
421}
422
423static noinline void *
424array_realloc (int elem, void *base, int *cur, int cnt)
425{
426 *cur = array_nextsize (elem, *cur, cnt);
427 return ev_realloc (base, elem * *cur);
428}
296 429
297#define array_needsize(type,base,cur,cnt,init) \ 430#define array_needsize(type,base,cur,cnt,init) \
298 if (expect_false ((cnt) > cur)) \ 431 if (expect_false ((cnt) > (cur))) \
299 { \ 432 { \
300 int newcnt = cur; \ 433 int ocur_ = (cur); \
301 do \ 434 (base) = (type *)array_realloc \
302 { \ 435 (sizeof (type), (base), &(cur), (cnt)); \
303 newcnt = array_roundsize (type, newcnt << 1); \ 436 init ((base) + (ocur_), (cur) - ocur_); \
304 } \
305 while ((cnt) > newcnt); \
306 \
307 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
308 init (base + cur, newcnt - cur); \
309 cur = newcnt; \
310 } 437 }
311 438
439#if 0
312#define array_slim(type,stem) \ 440#define array_slim(type,stem) \
313 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 441 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
314 { \ 442 { \
315 stem ## max = array_roundsize (stem ## cnt >> 1); \ 443 stem ## max = array_roundsize (stem ## cnt >> 1); \
316 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 444 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318 } 446 }
319 447#endif
320/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322#define array_free_microshit(stem) \
323 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324 448
325#define array_free(stem, idx) \ 449#define array_free(stem, idx) \
326 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 450 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
327 451
328/*****************************************************************************/ 452/*****************************************************************************/
329 453
330static void 454void noinline
455ev_feed_event (EV_P_ void *w, int revents)
456{
457 W w_ = (W)w;
458 int pri = ABSPRI (w_);
459
460 if (expect_false (w_->pending))
461 pendings [pri][w_->pending - 1].events |= revents;
462 else
463 {
464 w_->pending = ++pendingcnt [pri];
465 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
466 pendings [pri][w_->pending - 1].w = w_;
467 pendings [pri][w_->pending - 1].events = revents;
468 }
469}
470
471void inline_size
472queue_events (EV_P_ W *events, int eventcnt, int type)
473{
474 int i;
475
476 for (i = 0; i < eventcnt; ++i)
477 ev_feed_event (EV_A_ events [i], type);
478}
479
480/*****************************************************************************/
481
482void inline_size
331anfds_init (ANFD *base, int count) 483anfds_init (ANFD *base, int count)
332{ 484{
333 while (count--) 485 while (count--)
334 { 486 {
335 base->head = 0; 487 base->head = 0;
… …
338 490
339 ++base; 491 ++base;
340 } 492 }
341} 493}
342 494
343void 495void inline_speed
344ev_feed_event (EV_P_ void *w, int revents)
345{
346 W w_ = (W)w;
347
348 if (w_->pending)
349 {
350 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
351 return;
352 }
353
354 w_->pending = ++pendingcnt [ABSPRI (w_)];
355 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
356 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358}
359
360static void
361queue_events (EV_P_ W *events, int eventcnt, int type)
362{
363 int i;
364
365 for (i = 0; i < eventcnt; ++i)
366 ev_feed_event (EV_A_ events [i], type);
367}
368
369inline void
370fd_event (EV_P_ int fd, int revents) 496fd_event (EV_P_ int fd, int revents)
371{ 497{
372 ANFD *anfd = anfds + fd; 498 ANFD *anfd = anfds + fd;
373 struct ev_io *w; 499 ev_io *w;
374 500
375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 501 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
376 { 502 {
377 int ev = w->events & revents; 503 int ev = w->events & revents;
378 504
379 if (ev) 505 if (ev)
380 ev_feed_event (EV_A_ (W)w, ev); 506 ev_feed_event (EV_A_ (W)w, ev);
… …
382} 508}
383 509
384void 510void
385ev_feed_fd_event (EV_P_ int fd, int revents) 511ev_feed_fd_event (EV_P_ int fd, int revents)
386{ 512{
513 if (fd >= 0 && fd < anfdmax)
387 fd_event (EV_A_ fd, revents); 514 fd_event (EV_A_ fd, revents);
388} 515}
389 516
390/*****************************************************************************/ 517void inline_size
391
392static void
393fd_reify (EV_P) 518fd_reify (EV_P)
394{ 519{
395 int i; 520 int i;
396 521
397 for (i = 0; i < fdchangecnt; ++i) 522 for (i = 0; i < fdchangecnt; ++i)
398 { 523 {
399 int fd = fdchanges [i]; 524 int fd = fdchanges [i];
400 ANFD *anfd = anfds + fd; 525 ANFD *anfd = anfds + fd;
401 struct ev_io *w; 526 ev_io *w;
402 527
403 int events = 0; 528 int events = 0;
404 529
405 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 530 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
406 events |= w->events; 531 events |= w->events;
407 532
533#if EV_SELECT_IS_WINSOCKET
534 if (events)
535 {
536 unsigned long argp;
537 anfd->handle = _get_osfhandle (fd);
538 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
539 }
540#endif
541
408 anfd->reify = 0; 542 anfd->reify = 0;
409 543
410 method_modify (EV_A_ fd, anfd->events, events); 544 backend_modify (EV_A_ fd, anfd->events, events);
411 anfd->events = events; 545 anfd->events = events;
412 } 546 }
413 547
414 fdchangecnt = 0; 548 fdchangecnt = 0;
415} 549}
416 550
417static void 551void inline_size
418fd_change (EV_P_ int fd) 552fd_change (EV_P_ int fd)
419{ 553{
420 if (anfds [fd].reify) 554 if (expect_false (anfds [fd].reify))
421 return; 555 return;
422 556
423 anfds [fd].reify = 1; 557 anfds [fd].reify = 1;
424 558
425 ++fdchangecnt; 559 ++fdchangecnt;
426 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427 fdchanges [fdchangecnt - 1] = fd; 561 fdchanges [fdchangecnt - 1] = fd;
428} 562}
429 563
430static void 564void inline_speed
431fd_kill (EV_P_ int fd) 565fd_kill (EV_P_ int fd)
432{ 566{
433 struct ev_io *w; 567 ev_io *w;
434 568
435 while ((w = (struct ev_io *)anfds [fd].head)) 569 while ((w = (ev_io *)anfds [fd].head))
436 { 570 {
437 ev_io_stop (EV_A_ w); 571 ev_io_stop (EV_A_ w);
438 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 572 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
439 } 573 }
440} 574}
441 575
442static int 576int inline_size
443fd_valid (int fd) 577fd_valid (int fd)
444{ 578{
445#ifdef WIN32 579#ifdef _WIN32
446 return !!win32_get_osfhandle (fd); 580 return _get_osfhandle (fd) != -1;
447#else 581#else
448 return fcntl (fd, F_GETFD) != -1; 582 return fcntl (fd, F_GETFD) != -1;
449#endif 583#endif
450} 584}
451 585
452/* called on EBADF to verify fds */ 586/* called on EBADF to verify fds */
453static void 587static void noinline
454fd_ebadf (EV_P) 588fd_ebadf (EV_P)
455{ 589{
456 int fd; 590 int fd;
457 591
458 for (fd = 0; fd < anfdmax; ++fd) 592 for (fd = 0; fd < anfdmax; ++fd)
… …
460 if (!fd_valid (fd) == -1 && errno == EBADF) 594 if (!fd_valid (fd) == -1 && errno == EBADF)
461 fd_kill (EV_A_ fd); 595 fd_kill (EV_A_ fd);
462} 596}
463 597
464/* called on ENOMEM in select/poll to kill some fds and retry */ 598/* called on ENOMEM in select/poll to kill some fds and retry */
465static void 599static void noinline
466fd_enomem (EV_P) 600fd_enomem (EV_P)
467{ 601{
468 int fd; 602 int fd;
469 603
470 for (fd = anfdmax; fd--; ) 604 for (fd = anfdmax; fd--; )
… …
473 fd_kill (EV_A_ fd); 607 fd_kill (EV_A_ fd);
474 return; 608 return;
475 } 609 }
476} 610}
477 611
478/* usually called after fork if method needs to re-arm all fds from scratch */ 612/* usually called after fork if backend needs to re-arm all fds from scratch */
479static void 613static void noinline
480fd_rearm_all (EV_P) 614fd_rearm_all (EV_P)
481{ 615{
482 int fd; 616 int fd;
483 617
484 /* this should be highly optimised to not do anything but set a flag */
485 for (fd = 0; fd < anfdmax; ++fd) 618 for (fd = 0; fd < anfdmax; ++fd)
486 if (anfds [fd].events) 619 if (anfds [fd].events)
487 { 620 {
488 anfds [fd].events = 0; 621 anfds [fd].events = 0;
489 fd_change (EV_A_ fd); 622 fd_change (EV_A_ fd);
490 } 623 }
491} 624}
492 625
493/*****************************************************************************/ 626/*****************************************************************************/
494 627
495static void 628void inline_speed
496upheap (WT *heap, int k) 629upheap (WT *heap, int k)
497{ 630{
498 WT w = heap [k]; 631 WT w = heap [k];
499 632
500 while (k && heap [k >> 1]->at > w->at) 633 while (k && heap [k >> 1]->at > w->at)
… …
507 heap [k] = w; 640 heap [k] = w;
508 ((W)heap [k])->active = k + 1; 641 ((W)heap [k])->active = k + 1;
509 642
510} 643}
511 644
512static void 645void inline_speed
513downheap (WT *heap, int N, int k) 646downheap (WT *heap, int N, int k)
514{ 647{
515 WT w = heap [k]; 648 WT w = heap [k];
516 649
517 while (k < (N >> 1)) 650 while (k < (N >> 1))
… …
531 664
532 heap [k] = w; 665 heap [k] = w;
533 ((W)heap [k])->active = k + 1; 666 ((W)heap [k])->active = k + 1;
534} 667}
535 668
536inline void 669void inline_size
537adjustheap (WT *heap, int N, int k, ev_tstamp at) 670adjustheap (WT *heap, int N, int k)
538{ 671{
539 ev_tstamp old_at = heap [k]->at; 672 upheap (heap, k);
540 heap [k]->at = at;
541
542 if (old_at < at)
543 downheap (heap, N, k); 673 downheap (heap, N, k);
544 else
545 upheap (heap, k);
546} 674}
547 675
548/*****************************************************************************/ 676/*****************************************************************************/
549 677
550typedef struct 678typedef struct
… …
556static ANSIG *signals; 684static ANSIG *signals;
557static int signalmax; 685static int signalmax;
558 686
559static int sigpipe [2]; 687static int sigpipe [2];
560static sig_atomic_t volatile gotsig; 688static sig_atomic_t volatile gotsig;
561static struct ev_io sigev; 689static ev_io sigev;
562 690
563static void 691void inline_size
564signals_init (ANSIG *base, int count) 692signals_init (ANSIG *base, int count)
565{ 693{
566 while (count--) 694 while (count--)
567 { 695 {
568 base->head = 0; 696 base->head = 0;
… …
573} 701}
574 702
575static void 703static void
576sighandler (int signum) 704sighandler (int signum)
577{ 705{
578#if WIN32 706#if _WIN32
579 signal (signum, sighandler); 707 signal (signum, sighandler);
580#endif 708#endif
581 709
582 signals [signum - 1].gotsig = 1; 710 signals [signum - 1].gotsig = 1;
583 711
584 if (!gotsig) 712 if (!gotsig)
585 { 713 {
586 int old_errno = errno; 714 int old_errno = errno;
587 gotsig = 1; 715 gotsig = 1;
588#ifdef WIN32
589 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590#else
591 write (sigpipe [1], &signum, 1); 716 write (sigpipe [1], &signum, 1);
592#endif
593 errno = old_errno; 717 errno = old_errno;
594 } 718 }
595} 719}
596 720
597void 721void noinline
598ev_feed_signal_event (EV_P_ int signum) 722ev_feed_signal_event (EV_P_ int signum)
599{ 723{
600 WL w; 724 WL w;
601 725
602#if EV_MULTIPLICITY 726#if EV_MULTIPLICITY
603 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 727 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
604#endif 728#endif
605 729
606 --signum; 730 --signum;
607 731
608 if (signum < 0 || signum >= signalmax) 732 if (signum < 0 || signum >= signalmax)
… …
613 for (w = signals [signum].head; w; w = w->next) 737 for (w = signals [signum].head; w; w = w->next)
614 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 738 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615} 739}
616 740
617static void 741static void
618sigcb (EV_P_ struct ev_io *iow, int revents) 742sigcb (EV_P_ ev_io *iow, int revents)
619{ 743{
620 int signum; 744 int signum;
621 745
622#ifdef WIN32
623 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624#else
625 read (sigpipe [0], &revents, 1); 746 read (sigpipe [0], &revents, 1);
626#endif
627 gotsig = 0; 747 gotsig = 0;
628 748
629 for (signum = signalmax; signum--; ) 749 for (signum = signalmax; signum--; )
630 if (signals [signum].gotsig) 750 if (signals [signum].gotsig)
631 ev_feed_signal_event (EV_A_ signum + 1); 751 ev_feed_signal_event (EV_A_ signum + 1);
632} 752}
633 753
634static void 754void inline_speed
755fd_intern (int fd)
756{
757#ifdef _WIN32
758 int arg = 1;
759 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
760#else
761 fcntl (fd, F_SETFD, FD_CLOEXEC);
762 fcntl (fd, F_SETFL, O_NONBLOCK);
763#endif
764}
765
766static void noinline
635siginit (EV_P) 767siginit (EV_P)
636{ 768{
637#ifndef WIN32 769 fd_intern (sigpipe [0]);
638 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 770 fd_intern (sigpipe [1]);
639 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
640
641 /* rather than sort out wether we really need nb, set it */
642 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
643 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
644#endif
645 771
646 ev_io_set (&sigev, sigpipe [0], EV_READ); 772 ev_io_set (&sigev, sigpipe [0], EV_READ);
647 ev_io_start (EV_A_ &sigev); 773 ev_io_start (EV_A_ &sigev);
648 ev_unref (EV_A); /* child watcher should not keep loop alive */ 774 ev_unref (EV_A); /* child watcher should not keep loop alive */
649} 775}
650 776
651/*****************************************************************************/ 777/*****************************************************************************/
652 778
653static struct ev_child *childs [PID_HASHSIZE]; 779static ev_child *childs [EV_PID_HASHSIZE];
654 780
655#ifndef WIN32 781#ifndef _WIN32
656 782
657static struct ev_signal childev; 783static ev_signal childev;
784
785void inline_speed
786child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
787{
788 ev_child *w;
789
790 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
791 if (w->pid == pid || !w->pid)
792 {
793 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
794 w->rpid = pid;
795 w->rstatus = status;
796 ev_feed_event (EV_A_ (W)w, EV_CHILD);
797 }
798}
658 799
659#ifndef WCONTINUED 800#ifndef WCONTINUED
660# define WCONTINUED 0 801# define WCONTINUED 0
661#endif 802#endif
662 803
663static void 804static void
664child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
665{
666 struct ev_child *w;
667
668 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
669 if (w->pid == pid || !w->pid)
670 {
671 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
672 w->rpid = pid;
673 w->rstatus = status;
674 ev_feed_event (EV_A_ (W)w, EV_CHILD);
675 }
676}
677
678static void
679childcb (EV_P_ struct ev_signal *sw, int revents) 805childcb (EV_P_ ev_signal *sw, int revents)
680{ 806{
681 int pid, status; 807 int pid, status;
682 808
809 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
683 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 810 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
684 { 811 if (!WCONTINUED
812 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return;
815
685 /* make sure we are called again until all childs have been reaped */ 816 /* make sure we are called again until all childs have been reaped */
817 /* we need to do it this way so that the callback gets called before we continue */
686 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687 819
688 child_reap (EV_A_ sw, pid, pid, status); 820 child_reap (EV_A_ sw, pid, pid, status);
821 if (EV_PID_HASHSIZE > 1)
689 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 822 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
690 }
691} 823}
692 824
693#endif 825#endif
694 826
695/*****************************************************************************/ 827/*****************************************************************************/
696 828
829#if EV_USE_PORT
830# include "ev_port.c"
831#endif
697#if EV_USE_KQUEUE 832#if EV_USE_KQUEUE
698# include "ev_kqueue.c" 833# include "ev_kqueue.c"
699#endif 834#endif
700#if EV_USE_EPOLL 835#if EV_USE_EPOLL
701# include "ev_epoll.c" 836# include "ev_epoll.c"
… …
718{ 853{
719 return EV_VERSION_MINOR; 854 return EV_VERSION_MINOR;
720} 855}
721 856
722/* return true if we are running with elevated privileges and should ignore env variables */ 857/* return true if we are running with elevated privileges and should ignore env variables */
723static int 858int inline_size
724enable_secure (void) 859enable_secure (void)
725{ 860{
726#ifdef WIN32 861#ifdef _WIN32
727 return 0; 862 return 0;
728#else 863#else
729 return getuid () != geteuid () 864 return getuid () != geteuid ()
730 || getgid () != getegid (); 865 || getgid () != getegid ();
731#endif 866#endif
732} 867}
733 868
734int 869unsigned int
735ev_method (EV_P) 870ev_supported_backends (void)
736{ 871{
737 return method; 872 unsigned int flags = 0;
738}
739 873
740static void 874 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
741loop_init (EV_P_ int methods) 875 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
876 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
877 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
878 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
879
880 return flags;
881}
882
883unsigned int
884ev_recommended_backends (void)
742{ 885{
743 if (!method) 886 unsigned int flags = ev_supported_backends ();
887
888#ifndef __NetBSD__
889 /* kqueue is borked on everything but netbsd apparently */
890 /* it usually doesn't work correctly on anything but sockets and pipes */
891 flags &= ~EVBACKEND_KQUEUE;
892#endif
893#ifdef __APPLE__
894 // flags &= ~EVBACKEND_KQUEUE; for documentation
895 flags &= ~EVBACKEND_POLL;
896#endif
897
898 return flags;
899}
900
901unsigned int
902ev_embeddable_backends (void)
903{
904 return EVBACKEND_EPOLL
905 | EVBACKEND_KQUEUE
906 | EVBACKEND_PORT;
907}
908
909unsigned int
910ev_backend (EV_P)
911{
912 return backend;
913}
914
915unsigned int
916ev_loop_count (EV_P)
917{
918 return loop_count;
919}
920
921static void noinline
922loop_init (EV_P_ unsigned int flags)
923{
924 if (!backend)
744 { 925 {
745#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
746 { 927 {
747 struct timespec ts; 928 struct timespec ts;
748 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 929 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
753 ev_rt_now = ev_time (); 934 ev_rt_now = ev_time ();
754 mn_now = get_clock (); 935 mn_now = get_clock ();
755 now_floor = mn_now; 936 now_floor = mn_now;
756 rtmn_diff = ev_rt_now - mn_now; 937 rtmn_diff = ev_rt_now - mn_now;
757 938
758 if (methods == EVMETHOD_AUTO) 939 /* pid check not overridable via env */
759 if (!enable_secure () && getenv ("LIBEV_METHODS")) 940#ifndef _WIN32
941 if (flags & EVFLAG_FORKCHECK)
942 curpid = getpid ();
943#endif
944
945 if (!(flags & EVFLAG_NOENV)
946 && !enable_secure ()
947 && getenv ("LIBEV_FLAGS"))
760 methods = atoi (getenv ("LIBEV_METHODS")); 948 flags = atoi (getenv ("LIBEV_FLAGS"));
761 else
762 methods = EVMETHOD_ANY;
763 949
764 method = 0; 950 if (!(flags & 0x0000ffffUL))
951 flags |= ev_recommended_backends ();
952
953 backend = 0;
954 backend_fd = -1;
765#if EV_USE_WIN32 955#if EV_USE_INOTIFY
766 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 956 fs_fd = -2;
957#endif
958
959#if EV_USE_PORT
960 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
767#endif 961#endif
768#if EV_USE_KQUEUE 962#if EV_USE_KQUEUE
769 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770#endif 964#endif
771#if EV_USE_EPOLL 965#if EV_USE_EPOLL
772 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773#endif 967#endif
774#if EV_USE_POLL 968#if EV_USE_POLL
775 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776#endif 970#endif
777#if EV_USE_SELECT 971#if EV_USE_SELECT
778 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779#endif 973#endif
780 974
781 ev_init (&sigev, sigcb); 975 ev_init (&sigev, sigcb);
782 ev_set_priority (&sigev, EV_MAXPRI); 976 ev_set_priority (&sigev, EV_MAXPRI);
783 } 977 }
784} 978}
785 979
786void 980static void noinline
787loop_destroy (EV_P) 981loop_destroy (EV_P)
788{ 982{
789 int i; 983 int i;
790 984
791#if EV_USE_WIN32 985#if EV_USE_INOTIFY
792 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 986 if (fs_fd >= 0)
987 close (fs_fd);
988#endif
989
990 if (backend_fd >= 0)
991 close (backend_fd);
992
993#if EV_USE_PORT
994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
793#endif 995#endif
794#if EV_USE_KQUEUE 996#if EV_USE_KQUEUE
795 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796#endif 998#endif
797#if EV_USE_EPOLL 999#if EV_USE_EPOLL
798 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1000 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799#endif 1001#endif
800#if EV_USE_POLL 1002#if EV_USE_POLL
801 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1003 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802#endif 1004#endif
803#if EV_USE_SELECT 1005#if EV_USE_SELECT
804 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1006 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805#endif 1007#endif
806 1008
807 for (i = NUMPRI; i--; ) 1009 for (i = NUMPRI; i--; )
1010 {
808 array_free (pending, [i]); 1011 array_free (pending, [i]);
1012#if EV_IDLE_ENABLE
1013 array_free (idle, [i]);
1014#endif
1015 }
809 1016
810 /* have to use the microsoft-never-gets-it-right macro */ 1017 /* have to use the microsoft-never-gets-it-right macro */
811 array_free_microshit (fdchange); 1018 array_free (fdchange, EMPTY);
812 array_free_microshit (timer); 1019 array_free (timer, EMPTY);
813#if EV_PERIODICS 1020#if EV_PERIODIC_ENABLE
814 array_free_microshit (periodic); 1021 array_free (periodic, EMPTY);
815#endif 1022#endif
816 array_free_microshit (idle); 1023 array_free (prepare, EMPTY);
817 array_free_microshit (prepare); 1024 array_free (check, EMPTY);
818 array_free_microshit (check);
819 1025
820 method = 0; 1026 backend = 0;
821} 1027}
822 1028
823static void 1029void inline_size infy_fork (EV_P);
1030
1031void inline_size
824loop_fork (EV_P) 1032loop_fork (EV_P)
825{ 1033{
1034#if EV_USE_PORT
1035 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1036#endif
1037#if EV_USE_KQUEUE
1038 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1039#endif
826#if EV_USE_EPOLL 1040#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1041 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
828#endif 1042#endif
829#if EV_USE_KQUEUE 1043#if EV_USE_INOTIFY
830 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1044 infy_fork (EV_A);
831#endif 1045#endif
832 1046
833 if (ev_is_active (&sigev)) 1047 if (ev_is_active (&sigev))
834 { 1048 {
835 /* default loop */ 1049 /* default loop */
… …
848 postfork = 0; 1062 postfork = 0;
849} 1063}
850 1064
851#if EV_MULTIPLICITY 1065#if EV_MULTIPLICITY
852struct ev_loop * 1066struct ev_loop *
853ev_loop_new (int methods) 1067ev_loop_new (unsigned int flags)
854{ 1068{
855 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1069 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
856 1070
857 memset (loop, 0, sizeof (struct ev_loop)); 1071 memset (loop, 0, sizeof (struct ev_loop));
858 1072
859 loop_init (EV_A_ methods); 1073 loop_init (EV_A_ flags);
860 1074
861 if (ev_method (EV_A)) 1075 if (ev_backend (EV_A))
862 return loop; 1076 return loop;
863 1077
864 return 0; 1078 return 0;
865} 1079}
866 1080
… …
879 1093
880#endif 1094#endif
881 1095
882#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
883struct ev_loop * 1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
884#else 1099#else
885int 1100int
1101ev_default_loop (unsigned int flags)
886#endif 1102#endif
887ev_default_loop (int methods)
888{ 1103{
889 if (sigpipe [0] == sigpipe [1]) 1104 if (sigpipe [0] == sigpipe [1])
890 if (pipe (sigpipe)) 1105 if (pipe (sigpipe))
891 return 0; 1106 return 0;
892 1107
893 if (!default_loop) 1108 if (!ev_default_loop_ptr)
894 { 1109 {
895#if EV_MULTIPLICITY 1110#if EV_MULTIPLICITY
896 struct ev_loop *loop = default_loop = &default_loop_struct; 1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897#else 1112#else
898 default_loop = 1; 1113 ev_default_loop_ptr = 1;
899#endif 1114#endif
900 1115
901 loop_init (EV_A_ methods); 1116 loop_init (EV_A_ flags);
902 1117
903 if (ev_method (EV_A)) 1118 if (ev_backend (EV_A))
904 { 1119 {
905 siginit (EV_A); 1120 siginit (EV_A);
906 1121
907#ifndef WIN32 1122#ifndef _WIN32
908 ev_signal_init (&childev, childcb, SIGCHLD); 1123 ev_signal_init (&childev, childcb, SIGCHLD);
909 ev_set_priority (&childev, EV_MAXPRI); 1124 ev_set_priority (&childev, EV_MAXPRI);
910 ev_signal_start (EV_A_ &childev); 1125 ev_signal_start (EV_A_ &childev);
911 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1126 ev_unref (EV_A); /* child watcher should not keep loop alive */
912#endif 1127#endif
913 } 1128 }
914 else 1129 else
915 default_loop = 0; 1130 ev_default_loop_ptr = 0;
916 } 1131 }
917 1132
918 return default_loop; 1133 return ev_default_loop_ptr;
919} 1134}
920 1135
921void 1136void
922ev_default_destroy (void) 1137ev_default_destroy (void)
923{ 1138{
924#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
925 struct ev_loop *loop = default_loop; 1140 struct ev_loop *loop = ev_default_loop_ptr;
926#endif 1141#endif
927 1142
928#ifndef WIN32 1143#ifndef _WIN32
929 ev_ref (EV_A); /* child watcher */ 1144 ev_ref (EV_A); /* child watcher */
930 ev_signal_stop (EV_A_ &childev); 1145 ev_signal_stop (EV_A_ &childev);
931#endif 1146#endif
932 1147
933 ev_ref (EV_A); /* signal watcher */ 1148 ev_ref (EV_A); /* signal watcher */
… …
941 1156
942void 1157void
943ev_default_fork (void) 1158ev_default_fork (void)
944{ 1159{
945#if EV_MULTIPLICITY 1160#if EV_MULTIPLICITY
946 struct ev_loop *loop = default_loop; 1161 struct ev_loop *loop = ev_default_loop_ptr;
947#endif 1162#endif
948 1163
949 if (method) 1164 if (backend)
950 postfork = 1; 1165 postfork = 1;
951} 1166}
952 1167
953/*****************************************************************************/ 1168/*****************************************************************************/
954 1169
955static int 1170void
956any_pending (EV_P) 1171ev_invoke (EV_P_ void *w, int revents)
957{ 1172{
958 int pri; 1173 EV_CB_INVOKE ((W)w, revents);
959
960 for (pri = NUMPRI; pri--; )
961 if (pendingcnt [pri])
962 return 1;
963
964 return 0;
965} 1174}
966 1175
967static void 1176void inline_speed
968call_pending (EV_P) 1177call_pending (EV_P)
969{ 1178{
970 int pri; 1179 int pri;
971 1180
972 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
973 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
974 { 1183 {
975 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976 1185
977 if (p->w) 1186 if (expect_true (p->w))
978 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
979 p->w->pending = 0; 1190 p->w->pending = 0;
980 EV_CB_INVOKE (p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
981 } 1192 }
982 } 1193 }
983} 1194}
984 1195
985static void 1196void inline_size
986timers_reify (EV_P) 1197timers_reify (EV_P)
987{ 1198{
988 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
989 { 1200 {
990 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
991 1202
992 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
993 1204
994 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
995 if (w->repeat) 1206 if (w->repeat)
996 { 1207 {
997 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1007 1218
1008 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009 } 1220 }
1010} 1221}
1011 1222
1012#if EV_PERIODICS 1223#if EV_PERIODIC_ENABLE
1013static void 1224void inline_size
1014periodics_reify (EV_P) 1225periodics_reify (EV_P)
1015{ 1226{
1016 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1017 { 1228 {
1018 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
1019 1230
1020 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1021 1232
1022 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
1023 if (w->reschedule_cb) 1234 if (w->reschedule_cb)
1024 { 1235 {
1025 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */);
1026
1027 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1028 downheap ((WT *)periodics, periodiccnt, 0); 1238 downheap ((WT *)periodics, periodiccnt, 0);
1029 } 1239 }
1030 else if (w->interval) 1240 else if (w->interval)
1031 { 1241 {
1032 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval;
1033 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1034 downheap ((WT *)periodics, periodiccnt, 0); 1244 downheap ((WT *)periodics, periodiccnt, 0);
1035 } 1245 }
1036 else 1246 else
1037 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1038 1248
1039 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1040 } 1250 }
1041} 1251}
1042 1252
1043static void 1253static void noinline
1044periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
1045{ 1255{
1046 int i; 1256 int i;
1047 1257
1048 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
1049 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
1050 { 1260 {
1051 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
1052 1262
1053 if (w->reschedule_cb) 1263 if (w->reschedule_cb)
1054 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1055 else if (w->interval) 1265 else if (w->interval)
1056 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1266 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1057 } 1267 }
1058 1268
1059 /* now rebuild the heap */ 1269 /* now rebuild the heap */
1060 for (i = periodiccnt >> 1; i--; ) 1270 for (i = periodiccnt >> 1; i--; )
1061 downheap ((WT *)periodics, periodiccnt, i); 1271 downheap ((WT *)periodics, periodiccnt, i);
1062} 1272}
1063#endif 1273#endif
1064 1274
1065inline int 1275#if EV_IDLE_ENABLE
1276void inline_size
1277idle_reify (EV_P)
1278{
1279 if (expect_false (idleall))
1280 {
1281 int pri;
1282
1283 for (pri = NUMPRI; pri--; )
1284 {
1285 if (pendingcnt [pri])
1286 break;
1287
1288 if (idlecnt [pri])
1289 {
1290 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1291 break;
1292 }
1293 }
1294 }
1295}
1296#endif
1297
1298int inline_size
1066time_update_monotonic (EV_P) 1299time_update_monotonic (EV_P)
1067{ 1300{
1068 mn_now = get_clock (); 1301 mn_now = get_clock ();
1069 1302
1070 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
… …
1078 ev_rt_now = ev_time (); 1311 ev_rt_now = ev_time ();
1079 return 1; 1312 return 1;
1080 } 1313 }
1081} 1314}
1082 1315
1083static void 1316void inline_size
1084time_update (EV_P) 1317time_update (EV_P)
1085{ 1318{
1086 int i; 1319 int i;
1087 1320
1088#if EV_USE_MONOTONIC 1321#if EV_USE_MONOTONIC
… …
1090 { 1323 {
1091 if (time_update_monotonic (EV_A)) 1324 if (time_update_monotonic (EV_A))
1092 { 1325 {
1093 ev_tstamp odiff = rtmn_diff; 1326 ev_tstamp odiff = rtmn_diff;
1094 1327
1095 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1328 /* loop a few times, before making important decisions.
1329 * on the choice of "4": one iteration isn't enough,
1330 * in case we get preempted during the calls to
1331 * ev_time and get_clock. a second call is almost guaranteed
1332 * to succeed in that case, though. and looping a few more times
1333 * doesn't hurt either as we only do this on time-jumps or
1334 * in the unlikely event of having been preempted here.
1335 */
1336 for (i = 4; --i; )
1096 { 1337 {
1097 rtmn_diff = ev_rt_now - mn_now; 1338 rtmn_diff = ev_rt_now - mn_now;
1098 1339
1099 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1100 return; /* all is well */ 1341 return; /* all is well */
… …
1102 ev_rt_now = ev_time (); 1343 ev_rt_now = ev_time ();
1103 mn_now = get_clock (); 1344 mn_now = get_clock ();
1104 now_floor = mn_now; 1345 now_floor = mn_now;
1105 } 1346 }
1106 1347
1107# if EV_PERIODICS 1348# if EV_PERIODIC_ENABLE
1108 periodics_reschedule (EV_A); 1349 periodics_reschedule (EV_A);
1109# endif 1350# endif
1110 /* no timer adjustment, as the monotonic clock doesn't jump */ 1351 /* no timer adjustment, as the monotonic clock doesn't jump */
1111 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1112 } 1353 }
… …
1116 { 1357 {
1117 ev_rt_now = ev_time (); 1358 ev_rt_now = ev_time ();
1118 1359
1119 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1360 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1120 { 1361 {
1121#if EV_PERIODICS 1362#if EV_PERIODIC_ENABLE
1122 periodics_reschedule (EV_A); 1363 periodics_reschedule (EV_A);
1123#endif 1364#endif
1124 1365
1125 /* adjust timers. this is easy, as the offset is the same for all */ 1366 /* adjust timers. this is easy, as the offset is the same for all of them */
1126 for (i = 0; i < timercnt; ++i) 1367 for (i = 0; i < timercnt; ++i)
1127 ((WT)timers [i])->at += ev_rt_now - mn_now; 1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
1128 } 1369 }
1129 1370
1130 mn_now = ev_rt_now; 1371 mn_now = ev_rt_now;
… …
1146static int loop_done; 1387static int loop_done;
1147 1388
1148void 1389void
1149ev_loop (EV_P_ int flags) 1390ev_loop (EV_P_ int flags)
1150{ 1391{
1151 double block;
1152 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1392 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1393 ? EVUNLOOP_ONE
1394 : EVUNLOOP_CANCEL;
1395
1396 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1153 1397
1154 do 1398 do
1155 { 1399 {
1400#ifndef _WIN32
1401 if (expect_false (curpid)) /* penalise the forking check even more */
1402 if (expect_false (getpid () != curpid))
1403 {
1404 curpid = getpid ();
1405 postfork = 1;
1406 }
1407#endif
1408
1409#if EV_FORK_ENABLE
1410 /* we might have forked, so queue fork handlers */
1411 if (expect_false (postfork))
1412 if (forkcnt)
1413 {
1414 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1415 call_pending (EV_A);
1416 }
1417#endif
1418
1156 /* queue check watchers (and execute them) */ 1419 /* queue prepare watchers (and execute them) */
1157 if (expect_false (preparecnt)) 1420 if (expect_false (preparecnt))
1158 { 1421 {
1159 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1160 call_pending (EV_A); 1423 call_pending (EV_A);
1161 } 1424 }
1162 1425
1426 if (expect_false (!activecnt))
1427 break;
1428
1163 /* we might have forked, so reify kernel state if necessary */ 1429 /* we might have forked, so reify kernel state if necessary */
1164 if (expect_false (postfork)) 1430 if (expect_false (postfork))
1165 loop_fork (EV_A); 1431 loop_fork (EV_A);
1166 1432
1167 /* update fd-related kernel structures */ 1433 /* update fd-related kernel structures */
1168 fd_reify (EV_A); 1434 fd_reify (EV_A);
1169 1435
1170 /* calculate blocking time */ 1436 /* calculate blocking time */
1437 {
1438 ev_tstamp block;
1171 1439
1172 /* we only need this for !monotonic clock or timers, but as we basically 1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1173 always have timers, we just calculate it always */ 1441 block = 0.; /* do not block at all */
1442 else
1443 {
1444 /* update time to cancel out callback processing overhead */
1174#if EV_USE_MONOTONIC 1445#if EV_USE_MONOTONIC
1175 if (expect_true (have_monotonic)) 1446 if (expect_true (have_monotonic))
1176 time_update_monotonic (EV_A); 1447 time_update_monotonic (EV_A);
1177 else 1448 else
1178#endif 1449#endif
1179 { 1450 {
1180 ev_rt_now = ev_time (); 1451 ev_rt_now = ev_time ();
1181 mn_now = ev_rt_now; 1452 mn_now = ev_rt_now;
1182 } 1453 }
1183 1454
1184 if (flags & EVLOOP_NONBLOCK || idlecnt)
1185 block = 0.;
1186 else
1187 {
1188 block = MAX_BLOCKTIME; 1455 block = MAX_BLOCKTIME;
1189 1456
1190 if (timercnt) 1457 if (timercnt)
1191 { 1458 {
1192 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1193 if (block > to) block = to; 1460 if (block > to) block = to;
1194 } 1461 }
1195 1462
1196#if EV_PERIODICS 1463#if EV_PERIODIC_ENABLE
1197 if (periodiccnt) 1464 if (periodiccnt)
1198 { 1465 {
1199 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1466 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1200 if (block > to) block = to; 1467 if (block > to) block = to;
1201 } 1468 }
1202#endif 1469#endif
1203 1470
1204 if (block < 0.) block = 0.; 1471 if (expect_false (block < 0.)) block = 0.;
1205 } 1472 }
1206 1473
1474 ++loop_count;
1207 method_poll (EV_A_ block); 1475 backend_poll (EV_A_ block);
1476 }
1208 1477
1209 /* update ev_rt_now, do magic */ 1478 /* update ev_rt_now, do magic */
1210 time_update (EV_A); 1479 time_update (EV_A);
1211 1480
1212 /* queue pending timers and reschedule them */ 1481 /* queue pending timers and reschedule them */
1213 timers_reify (EV_A); /* relative timers called last */ 1482 timers_reify (EV_A); /* relative timers called last */
1214#if EV_PERIODICS 1483#if EV_PERIODIC_ENABLE
1215 periodics_reify (EV_A); /* absolute timers called first */ 1484 periodics_reify (EV_A); /* absolute timers called first */
1216#endif 1485#endif
1217 1486
1487#if EV_IDLE_ENABLE
1218 /* queue idle watchers unless io or timers are pending */ 1488 /* queue idle watchers unless other events are pending */
1219 if (idlecnt && !any_pending (EV_A)) 1489 idle_reify (EV_A);
1220 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1490#endif
1221 1491
1222 /* queue check watchers, to be executed first */ 1492 /* queue check watchers, to be executed first */
1223 if (checkcnt) 1493 if (expect_false (checkcnt))
1224 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225 1495
1226 call_pending (EV_A); 1496 call_pending (EV_A);
1497
1227 } 1498 }
1228 while (activecnt && !loop_done); 1499 while (expect_true (activecnt && !loop_done));
1229 1500
1230 if (loop_done != 2) 1501 if (loop_done == EVUNLOOP_ONE)
1231 loop_done = 0; 1502 loop_done = EVUNLOOP_CANCEL;
1232} 1503}
1233 1504
1234void 1505void
1235ev_unloop (EV_P_ int how) 1506ev_unloop (EV_P_ int how)
1236{ 1507{
1237 loop_done = how; 1508 loop_done = how;
1238} 1509}
1239 1510
1240/*****************************************************************************/ 1511/*****************************************************************************/
1241 1512
1242inline void 1513void inline_size
1243wlist_add (WL *head, WL elem) 1514wlist_add (WL *head, WL elem)
1244{ 1515{
1245 elem->next = *head; 1516 elem->next = *head;
1246 *head = elem; 1517 *head = elem;
1247} 1518}
1248 1519
1249inline void 1520void inline_size
1250wlist_del (WL *head, WL elem) 1521wlist_del (WL *head, WL elem)
1251{ 1522{
1252 while (*head) 1523 while (*head)
1253 { 1524 {
1254 if (*head == elem) 1525 if (*head == elem)
… …
1259 1530
1260 head = &(*head)->next; 1531 head = &(*head)->next;
1261 } 1532 }
1262} 1533}
1263 1534
1264inline void 1535void inline_speed
1265ev_clear_pending (EV_P_ W w) 1536clear_pending (EV_P_ W w)
1266{ 1537{
1267 if (w->pending) 1538 if (w->pending)
1268 { 1539 {
1269 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1540 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1270 w->pending = 0; 1541 w->pending = 0;
1271 } 1542 }
1272} 1543}
1273 1544
1274inline void 1545int
1546ev_clear_pending (EV_P_ void *w)
1547{
1548 W w_ = (W)w;
1549 int pending = w_->pending;
1550
1551 if (expect_true (pending))
1552 {
1553 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1554 w_->pending = 0;
1555 p->w = 0;
1556 return p->events;
1557 }
1558 else
1559 return 0;
1560}
1561
1562void inline_size
1563pri_adjust (EV_P_ W w)
1564{
1565 int pri = w->priority;
1566 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1567 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1568 w->priority = pri;
1569}
1570
1571void inline_speed
1275ev_start (EV_P_ W w, int active) 1572ev_start (EV_P_ W w, int active)
1276{ 1573{
1277 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1574 pri_adjust (EV_A_ w);
1278 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1279
1280 w->active = active; 1575 w->active = active;
1281 ev_ref (EV_A); 1576 ev_ref (EV_A);
1282} 1577}
1283 1578
1284inline void 1579void inline_size
1285ev_stop (EV_P_ W w) 1580ev_stop (EV_P_ W w)
1286{ 1581{
1287 ev_unref (EV_A); 1582 ev_unref (EV_A);
1288 w->active = 0; 1583 w->active = 0;
1289} 1584}
1290 1585
1291/*****************************************************************************/ 1586/*****************************************************************************/
1292 1587
1293void 1588void noinline
1294ev_io_start (EV_P_ struct ev_io *w) 1589ev_io_start (EV_P_ ev_io *w)
1295{ 1590{
1296 int fd = w->fd; 1591 int fd = w->fd;
1297 1592
1298 if (ev_is_active (w)) 1593 if (expect_false (ev_is_active (w)))
1299 return; 1594 return;
1300 1595
1301 assert (("ev_io_start called with negative fd", fd >= 0)); 1596 assert (("ev_io_start called with negative fd", fd >= 0));
1302 1597
1303 ev_start (EV_A_ (W)w, 1); 1598 ev_start (EV_A_ (W)w, 1);
… …
1305 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1600 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1306 1601
1307 fd_change (EV_A_ fd); 1602 fd_change (EV_A_ fd);
1308} 1603}
1309 1604
1310void 1605void noinline
1311ev_io_stop (EV_P_ struct ev_io *w) 1606ev_io_stop (EV_P_ ev_io *w)
1312{ 1607{
1313 ev_clear_pending (EV_A_ (W)w); 1608 clear_pending (EV_A_ (W)w);
1314 if (!ev_is_active (w)) 1609 if (expect_false (!ev_is_active (w)))
1315 return; 1610 return;
1316 1611
1317 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1612 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1318 1613
1319 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1614 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1615 ev_stop (EV_A_ (W)w);
1321 1616
1322 fd_change (EV_A_ w->fd); 1617 fd_change (EV_A_ w->fd);
1323} 1618}
1324 1619
1325void 1620void noinline
1326ev_timer_start (EV_P_ struct ev_timer *w) 1621ev_timer_start (EV_P_ ev_timer *w)
1327{ 1622{
1328 if (ev_is_active (w)) 1623 if (expect_false (ev_is_active (w)))
1329 return; 1624 return;
1330 1625
1331 ((WT)w)->at += mn_now; 1626 ((WT)w)->at += mn_now;
1332 1627
1333 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1628 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1334 1629
1335 ev_start (EV_A_ (W)w, ++timercnt); 1630 ev_start (EV_A_ (W)w, ++timercnt);
1336 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1631 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1337 timers [timercnt - 1] = w; 1632 timers [timercnt - 1] = w;
1338 upheap ((WT *)timers, timercnt - 1); 1633 upheap ((WT *)timers, timercnt - 1);
1339 1634
1635 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1636}
1637
1638void noinline
1639ev_timer_stop (EV_P_ ev_timer *w)
1640{
1641 clear_pending (EV_A_ (W)w);
1642 if (expect_false (!ev_is_active (w)))
1643 return;
1644
1340 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1645 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341}
1342 1646
1343void 1647 {
1344ev_timer_stop (EV_P_ struct ev_timer *w) 1648 int active = ((W)w)->active;
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w))
1348 return;
1349 1649
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1650 if (expect_true (--active < --timercnt))
1351
1352 if (((W)w)->active < timercnt--)
1353 { 1651 {
1354 timers [((W)w)->active - 1] = timers [timercnt]; 1652 timers [active] = timers [timercnt];
1355 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1653 adjustheap ((WT *)timers, timercnt, active);
1356 } 1654 }
1655 }
1357 1656
1358 ((WT)w)->at -= mn_now; 1657 ((WT)w)->at -= mn_now;
1359 1658
1360 ev_stop (EV_A_ (W)w); 1659 ev_stop (EV_A_ (W)w);
1361} 1660}
1362 1661
1363void 1662void noinline
1364ev_timer_again (EV_P_ struct ev_timer *w) 1663ev_timer_again (EV_P_ ev_timer *w)
1365{ 1664{
1366 if (ev_is_active (w)) 1665 if (ev_is_active (w))
1367 { 1666 {
1368 if (w->repeat) 1667 if (w->repeat)
1668 {
1669 ((WT)w)->at = mn_now + w->repeat;
1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1670 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1671 }
1370 else 1672 else
1371 ev_timer_stop (EV_A_ w); 1673 ev_timer_stop (EV_A_ w);
1372 } 1674 }
1373 else if (w->repeat) 1675 else if (w->repeat)
1676 {
1677 w->at = w->repeat;
1374 ev_timer_start (EV_A_ w); 1678 ev_timer_start (EV_A_ w);
1679 }
1375} 1680}
1376 1681
1377#if EV_PERIODICS 1682#if EV_PERIODIC_ENABLE
1378void 1683void noinline
1379ev_periodic_start (EV_P_ struct ev_periodic *w) 1684ev_periodic_start (EV_P_ ev_periodic *w)
1380{ 1685{
1381 if (ev_is_active (w)) 1686 if (expect_false (ev_is_active (w)))
1382 return; 1687 return;
1383 1688
1384 if (w->reschedule_cb) 1689 if (w->reschedule_cb)
1385 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1690 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386 else if (w->interval) 1691 else if (w->interval)
1387 { 1692 {
1388 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1693 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1389 /* this formula differs from the one in periodic_reify because we do not always round up */ 1694 /* this formula differs from the one in periodic_reify because we do not always round up */
1390 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1695 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1391 } 1696 }
1697 else
1698 ((WT)w)->at = w->offset;
1392 1699
1393 ev_start (EV_A_ (W)w, ++periodiccnt); 1700 ev_start (EV_A_ (W)w, ++periodiccnt);
1394 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1701 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1395 periodics [periodiccnt - 1] = w; 1702 periodics [periodiccnt - 1] = w;
1396 upheap ((WT *)periodics, periodiccnt - 1); 1703 upheap ((WT *)periodics, periodiccnt - 1);
1397 1704
1705 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1706}
1707
1708void noinline
1709ev_periodic_stop (EV_P_ ev_periodic *w)
1710{
1711 clear_pending (EV_A_ (W)w);
1712 if (expect_false (!ev_is_active (w)))
1713 return;
1714
1398 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1715 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1399}
1400 1716
1401void 1717 {
1402ev_periodic_stop (EV_P_ struct ev_periodic *w) 1718 int active = ((W)w)->active;
1403{
1404 ev_clear_pending (EV_A_ (W)w);
1405 if (!ev_is_active (w))
1406 return;
1407 1719
1408 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1720 if (expect_true (--active < --periodiccnt))
1409
1410 if (((W)w)->active < periodiccnt--)
1411 { 1721 {
1412 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1722 periodics [active] = periodics [periodiccnt];
1413 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1723 adjustheap ((WT *)periodics, periodiccnt, active);
1414 } 1724 }
1725 }
1415 1726
1416 ev_stop (EV_A_ (W)w); 1727 ev_stop (EV_A_ (W)w);
1417} 1728}
1418 1729
1419void 1730void noinline
1420ev_periodic_again (EV_P_ struct ev_periodic *w) 1731ev_periodic_again (EV_P_ ev_periodic *w)
1421{ 1732{
1422 /* TODO: use adjustheap and recalculation */ 1733 /* TODO: use adjustheap and recalculation */
1423 ev_periodic_stop (EV_A_ w); 1734 ev_periodic_stop (EV_A_ w);
1424 ev_periodic_start (EV_A_ w); 1735 ev_periodic_start (EV_A_ w);
1425} 1736}
1426#endif 1737#endif
1427 1738
1428void
1429ev_idle_start (EV_P_ struct ev_idle *w)
1430{
1431 if (ev_is_active (w))
1432 return;
1433
1434 ev_start (EV_A_ (W)w, ++idlecnt);
1435 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1436 idles [idlecnt - 1] = w;
1437}
1438
1439void
1440ev_idle_stop (EV_P_ struct ev_idle *w)
1441{
1442 ev_clear_pending (EV_A_ (W)w);
1443 if (ev_is_active (w))
1444 return;
1445
1446 idles [((W)w)->active - 1] = idles [--idlecnt];
1447 ev_stop (EV_A_ (W)w);
1448}
1449
1450void
1451ev_prepare_start (EV_P_ struct ev_prepare *w)
1452{
1453 if (ev_is_active (w))
1454 return;
1455
1456 ev_start (EV_A_ (W)w, ++preparecnt);
1457 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1458 prepares [preparecnt - 1] = w;
1459}
1460
1461void
1462ev_prepare_stop (EV_P_ struct ev_prepare *w)
1463{
1464 ev_clear_pending (EV_A_ (W)w);
1465 if (ev_is_active (w))
1466 return;
1467
1468 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1469 ev_stop (EV_A_ (W)w);
1470}
1471
1472void
1473ev_check_start (EV_P_ struct ev_check *w)
1474{
1475 if (ev_is_active (w))
1476 return;
1477
1478 ev_start (EV_A_ (W)w, ++checkcnt);
1479 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1480 checks [checkcnt - 1] = w;
1481}
1482
1483void
1484ev_check_stop (EV_P_ struct ev_check *w)
1485{
1486 ev_clear_pending (EV_A_ (W)w);
1487 if (!ev_is_active (w))
1488 return;
1489
1490 checks [((W)w)->active - 1] = checks [--checkcnt];
1491 ev_stop (EV_A_ (W)w);
1492}
1493
1494#ifndef SA_RESTART 1739#ifndef SA_RESTART
1495# define SA_RESTART 0 1740# define SA_RESTART 0
1496#endif 1741#endif
1497 1742
1498void 1743void noinline
1499ev_signal_start (EV_P_ struct ev_signal *w) 1744ev_signal_start (EV_P_ ev_signal *w)
1500{ 1745{
1501#if EV_MULTIPLICITY 1746#if EV_MULTIPLICITY
1502 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1747 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503#endif 1748#endif
1504 if (ev_is_active (w)) 1749 if (expect_false (ev_is_active (w)))
1505 return; 1750 return;
1506 1751
1507 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1752 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1508 1753
1509 ev_start (EV_A_ (W)w, 1); 1754 ev_start (EV_A_ (W)w, 1);
1510 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1755 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1756 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1512 1757
1513 if (!((WL)w)->next) 1758 if (!((WL)w)->next)
1514 { 1759 {
1515#if WIN32 1760#if _WIN32
1516 signal (w->signum, sighandler); 1761 signal (w->signum, sighandler);
1517#else 1762#else
1518 struct sigaction sa; 1763 struct sigaction sa;
1519 sa.sa_handler = sighandler; 1764 sa.sa_handler = sighandler;
1520 sigfillset (&sa.sa_mask); 1765 sigfillset (&sa.sa_mask);
… …
1522 sigaction (w->signum, &sa, 0); 1767 sigaction (w->signum, &sa, 0);
1523#endif 1768#endif
1524 } 1769 }
1525} 1770}
1526 1771
1527void 1772void noinline
1528ev_signal_stop (EV_P_ struct ev_signal *w) 1773ev_signal_stop (EV_P_ ev_signal *w)
1529{ 1774{
1530 ev_clear_pending (EV_A_ (W)w); 1775 clear_pending (EV_A_ (W)w);
1531 if (!ev_is_active (w)) 1776 if (expect_false (!ev_is_active (w)))
1532 return; 1777 return;
1533 1778
1534 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1779 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1535 ev_stop (EV_A_ (W)w); 1780 ev_stop (EV_A_ (W)w);
1536 1781
1537 if (!signals [w->signum - 1].head) 1782 if (!signals [w->signum - 1].head)
1538 signal (w->signum, SIG_DFL); 1783 signal (w->signum, SIG_DFL);
1539} 1784}
1540 1785
1541void 1786void
1542ev_child_start (EV_P_ struct ev_child *w) 1787ev_child_start (EV_P_ ev_child *w)
1543{ 1788{
1544#if EV_MULTIPLICITY 1789#if EV_MULTIPLICITY
1545 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1790 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1546#endif 1791#endif
1547 if (ev_is_active (w)) 1792 if (expect_false (ev_is_active (w)))
1548 return; 1793 return;
1549 1794
1550 ev_start (EV_A_ (W)w, 1); 1795 ev_start (EV_A_ (W)w, 1);
1551 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1796 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1552} 1797}
1553 1798
1554void 1799void
1555ev_child_stop (EV_P_ struct ev_child *w) 1800ev_child_stop (EV_P_ ev_child *w)
1556{ 1801{
1557 ev_clear_pending (EV_A_ (W)w); 1802 clear_pending (EV_A_ (W)w);
1558 if (!ev_is_active (w)) 1803 if (expect_false (!ev_is_active (w)))
1559 return; 1804 return;
1560 1805
1561 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1806 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1562 ev_stop (EV_A_ (W)w); 1807 ev_stop (EV_A_ (W)w);
1563} 1808}
1564 1809
1810#if EV_STAT_ENABLE
1811
1812# ifdef _WIN32
1813# undef lstat
1814# define lstat(a,b) _stati64 (a,b)
1815# endif
1816
1817#define DEF_STAT_INTERVAL 5.0074891
1818#define MIN_STAT_INTERVAL 0.1074891
1819
1820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1821
1822#if EV_USE_INOTIFY
1823# define EV_INOTIFY_BUFSIZE 8192
1824
1825static void noinline
1826infy_add (EV_P_ ev_stat *w)
1827{
1828 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);
1829
1830 if (w->wd < 0)
1831 {
1832 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1833
1834 /* monitor some parent directory for speedup hints */
1835 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1836 {
1837 char path [4096];
1838 strcpy (path, w->path);
1839
1840 do
1841 {
1842 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1843 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1844
1845 char *pend = strrchr (path, '/');
1846
1847 if (!pend)
1848 break; /* whoops, no '/', complain to your admin */
1849
1850 *pend = 0;
1851 w->wd = inotify_add_watch (fs_fd, path, mask);
1852 }
1853 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1854 }
1855 }
1856 else
1857 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1858
1859 if (w->wd >= 0)
1860 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1861}
1862
1863static void noinline
1864infy_del (EV_P_ ev_stat *w)
1865{
1866 int slot;
1867 int wd = w->wd;
1868
1869 if (wd < 0)
1870 return;
1871
1872 w->wd = -2;
1873 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1874 wlist_del (&fs_hash [slot].head, (WL)w);
1875
1876 /* remove this watcher, if others are watching it, they will rearm */
1877 inotify_rm_watch (fs_fd, wd);
1878}
1879
1880static void noinline
1881infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1882{
1883 if (slot < 0)
1884 /* overflow, need to check for all hahs slots */
1885 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1886 infy_wd (EV_A_ slot, wd, ev);
1887 else
1888 {
1889 WL w_;
1890
1891 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1892 {
1893 ev_stat *w = (ev_stat *)w_;
1894 w_ = w_->next; /* lets us remove this watcher and all before it */
1895
1896 if (w->wd == wd || wd == -1)
1897 {
1898 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1899 {
1900 w->wd = -1;
1901 infy_add (EV_A_ w); /* re-add, no matter what */
1902 }
1903
1904 stat_timer_cb (EV_A_ &w->timer, 0);
1905 }
1906 }
1907 }
1908}
1909
1910static void
1911infy_cb (EV_P_ ev_io *w, int revents)
1912{
1913 char buf [EV_INOTIFY_BUFSIZE];
1914 struct inotify_event *ev = (struct inotify_event *)buf;
1915 int ofs;
1916 int len = read (fs_fd, buf, sizeof (buf));
1917
1918 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1919 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1920}
1921
1922void inline_size
1923infy_init (EV_P)
1924{
1925 if (fs_fd != -2)
1926 return;
1927
1928 fs_fd = inotify_init ();
1929
1930 if (fs_fd >= 0)
1931 {
1932 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1933 ev_set_priority (&fs_w, EV_MAXPRI);
1934 ev_io_start (EV_A_ &fs_w);
1935 }
1936}
1937
1938void inline_size
1939infy_fork (EV_P)
1940{
1941 int slot;
1942
1943 if (fs_fd < 0)
1944 return;
1945
1946 close (fs_fd);
1947 fs_fd = inotify_init ();
1948
1949 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1950 {
1951 WL w_ = fs_hash [slot].head;
1952 fs_hash [slot].head = 0;
1953
1954 while (w_)
1955 {
1956 ev_stat *w = (ev_stat *)w_;
1957 w_ = w_->next; /* lets us add this watcher */
1958
1959 w->wd = -1;
1960
1961 if (fs_fd >= 0)
1962 infy_add (EV_A_ w); /* re-add, no matter what */
1963 else
1964 ev_timer_start (EV_A_ &w->timer);
1965 }
1966
1967 }
1968}
1969
1970#endif
1971
1972void
1973ev_stat_stat (EV_P_ ev_stat *w)
1974{
1975 if (lstat (w->path, &w->attr) < 0)
1976 w->attr.st_nlink = 0;
1977 else if (!w->attr.st_nlink)
1978 w->attr.st_nlink = 1;
1979}
1980
1981static void noinline
1982stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1983{
1984 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1985
1986 /* we copy this here each the time so that */
1987 /* prev has the old value when the callback gets invoked */
1988 w->prev = w->attr;
1989 ev_stat_stat (EV_A_ w);
1990
1991 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1992 if (
1993 w->prev.st_dev != w->attr.st_dev
1994 || w->prev.st_ino != w->attr.st_ino
1995 || w->prev.st_mode != w->attr.st_mode
1996 || w->prev.st_nlink != w->attr.st_nlink
1997 || w->prev.st_uid != w->attr.st_uid
1998 || w->prev.st_gid != w->attr.st_gid
1999 || w->prev.st_rdev != w->attr.st_rdev
2000 || w->prev.st_size != w->attr.st_size
2001 || w->prev.st_atime != w->attr.st_atime
2002 || w->prev.st_mtime != w->attr.st_mtime
2003 || w->prev.st_ctime != w->attr.st_ctime
2004 ) {
2005 #if EV_USE_INOTIFY
2006 infy_del (EV_A_ w);
2007 infy_add (EV_A_ w);
2008 ev_stat_stat (EV_A_ w); /* avoid race... */
2009 #endif
2010
2011 ev_feed_event (EV_A_ w, EV_STAT);
2012 }
2013}
2014
2015void
2016ev_stat_start (EV_P_ ev_stat *w)
2017{
2018 if (expect_false (ev_is_active (w)))
2019 return;
2020
2021 /* since we use memcmp, we need to clear any padding data etc. */
2022 memset (&w->prev, 0, sizeof (ev_statdata));
2023 memset (&w->attr, 0, sizeof (ev_statdata));
2024
2025 ev_stat_stat (EV_A_ w);
2026
2027 if (w->interval < MIN_STAT_INTERVAL)
2028 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2029
2030 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2031 ev_set_priority (&w->timer, ev_priority (w));
2032
2033#if EV_USE_INOTIFY
2034 infy_init (EV_A);
2035
2036 if (fs_fd >= 0)
2037 infy_add (EV_A_ w);
2038 else
2039#endif
2040 ev_timer_start (EV_A_ &w->timer);
2041
2042 ev_start (EV_A_ (W)w, 1);
2043}
2044
2045void
2046ev_stat_stop (EV_P_ ev_stat *w)
2047{
2048 clear_pending (EV_A_ (W)w);
2049 if (expect_false (!ev_is_active (w)))
2050 return;
2051
2052#if EV_USE_INOTIFY
2053 infy_del (EV_A_ w);
2054#endif
2055 ev_timer_stop (EV_A_ &w->timer);
2056
2057 ev_stop (EV_A_ (W)w);
2058}
2059#endif
2060
2061#if EV_IDLE_ENABLE
2062void
2063ev_idle_start (EV_P_ ev_idle *w)
2064{
2065 if (expect_false (ev_is_active (w)))
2066 return;
2067
2068 pri_adjust (EV_A_ (W)w);
2069
2070 {
2071 int active = ++idlecnt [ABSPRI (w)];
2072
2073 ++idleall;
2074 ev_start (EV_A_ (W)w, active);
2075
2076 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2077 idles [ABSPRI (w)][active - 1] = w;
2078 }
2079}
2080
2081void
2082ev_idle_stop (EV_P_ ev_idle *w)
2083{
2084 clear_pending (EV_A_ (W)w);
2085 if (expect_false (!ev_is_active (w)))
2086 return;
2087
2088 {
2089 int active = ((W)w)->active;
2090
2091 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2092 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2093
2094 ev_stop (EV_A_ (W)w);
2095 --idleall;
2096 }
2097}
2098#endif
2099
2100void
2101ev_prepare_start (EV_P_ ev_prepare *w)
2102{
2103 if (expect_false (ev_is_active (w)))
2104 return;
2105
2106 ev_start (EV_A_ (W)w, ++preparecnt);
2107 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2108 prepares [preparecnt - 1] = w;
2109}
2110
2111void
2112ev_prepare_stop (EV_P_ ev_prepare *w)
2113{
2114 clear_pending (EV_A_ (W)w);
2115 if (expect_false (!ev_is_active (w)))
2116 return;
2117
2118 {
2119 int active = ((W)w)->active;
2120 prepares [active - 1] = prepares [--preparecnt];
2121 ((W)prepares [active - 1])->active = active;
2122 }
2123
2124 ev_stop (EV_A_ (W)w);
2125}
2126
2127void
2128ev_check_start (EV_P_ ev_check *w)
2129{
2130 if (expect_false (ev_is_active (w)))
2131 return;
2132
2133 ev_start (EV_A_ (W)w, ++checkcnt);
2134 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2135 checks [checkcnt - 1] = w;
2136}
2137
2138void
2139ev_check_stop (EV_P_ ev_check *w)
2140{
2141 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w)))
2143 return;
2144
2145 {
2146 int active = ((W)w)->active;
2147 checks [active - 1] = checks [--checkcnt];
2148 ((W)checks [active - 1])->active = active;
2149 }
2150
2151 ev_stop (EV_A_ (W)w);
2152}
2153
2154#if EV_EMBED_ENABLE
2155void noinline
2156ev_embed_sweep (EV_P_ ev_embed *w)
2157{
2158 ev_loop (w->loop, EVLOOP_NONBLOCK);
2159}
2160
2161static void
2162embed_cb (EV_P_ ev_io *io, int revents)
2163{
2164 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2165
2166 if (ev_cb (w))
2167 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2168 else
2169 ev_embed_sweep (loop, w);
2170}
2171
2172void
2173ev_embed_start (EV_P_ ev_embed *w)
2174{
2175 if (expect_false (ev_is_active (w)))
2176 return;
2177
2178 {
2179 struct ev_loop *loop = w->loop;
2180 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2181 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2182 }
2183
2184 ev_set_priority (&w->io, ev_priority (w));
2185 ev_io_start (EV_A_ &w->io);
2186
2187 ev_start (EV_A_ (W)w, 1);
2188}
2189
2190void
2191ev_embed_stop (EV_P_ ev_embed *w)
2192{
2193 clear_pending (EV_A_ (W)w);
2194 if (expect_false (!ev_is_active (w)))
2195 return;
2196
2197 ev_io_stop (EV_A_ &w->io);
2198
2199 ev_stop (EV_A_ (W)w);
2200}
2201#endif
2202
2203#if EV_FORK_ENABLE
2204void
2205ev_fork_start (EV_P_ ev_fork *w)
2206{
2207 if (expect_false (ev_is_active (w)))
2208 return;
2209
2210 ev_start (EV_A_ (W)w, ++forkcnt);
2211 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2212 forks [forkcnt - 1] = w;
2213}
2214
2215void
2216ev_fork_stop (EV_P_ ev_fork *w)
2217{
2218 clear_pending (EV_A_ (W)w);
2219 if (expect_false (!ev_is_active (w)))
2220 return;
2221
2222 {
2223 int active = ((W)w)->active;
2224 forks [active - 1] = forks [--forkcnt];
2225 ((W)forks [active - 1])->active = active;
2226 }
2227
2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
1565/*****************************************************************************/ 2232/*****************************************************************************/
1566 2233
1567struct ev_once 2234struct ev_once
1568{ 2235{
1569 struct ev_io io; 2236 ev_io io;
1570 struct ev_timer to; 2237 ev_timer to;
1571 void (*cb)(int revents, void *arg); 2238 void (*cb)(int revents, void *arg);
1572 void *arg; 2239 void *arg;
1573}; 2240};
1574 2241
1575static void 2242static void
… …
1584 2251
1585 cb (revents, arg); 2252 cb (revents, arg);
1586} 2253}
1587 2254
1588static void 2255static void
1589once_cb_io (EV_P_ struct ev_io *w, int revents) 2256once_cb_io (EV_P_ ev_io *w, int revents)
1590{ 2257{
1591 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1592} 2259}
1593 2260
1594static void 2261static void
1595once_cb_to (EV_P_ struct ev_timer *w, int revents) 2262once_cb_to (EV_P_ ev_timer *w, int revents)
1596{ 2263{
1597 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2264 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1598} 2265}
1599 2266
1600void 2267void
1601ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2268ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1602{ 2269{
1603 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2270 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1604 2271
1605 if (!once) 2272 if (expect_false (!once))
2273 {
1606 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2274 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1607 else 2275 return;
1608 { 2276 }
2277
1609 once->cb = cb; 2278 once->cb = cb;
1610 once->arg = arg; 2279 once->arg = arg;
1611 2280
1612 ev_init (&once->io, once_cb_io); 2281 ev_init (&once->io, once_cb_io);
1613 if (fd >= 0) 2282 if (fd >= 0)
1614 { 2283 {
1615 ev_io_set (&once->io, fd, events); 2284 ev_io_set (&once->io, fd, events);
1616 ev_io_start (EV_A_ &once->io); 2285 ev_io_start (EV_A_ &once->io);
1617 } 2286 }
1618 2287
1619 ev_init (&once->to, once_cb_to); 2288 ev_init (&once->to, once_cb_to);
1620 if (timeout >= 0.) 2289 if (timeout >= 0.)
1621 { 2290 {
1622 ev_timer_set (&once->to, timeout, 0.); 2291 ev_timer_set (&once->to, timeout, 0.);
1623 ev_timer_start (EV_A_ &once->to); 2292 ev_timer_start (EV_A_ &once->to);
1624 }
1625 } 2293 }
1626} 2294}
1627 2295
1628#ifdef __cplusplus 2296#ifdef __cplusplus
1629} 2297}

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