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Comparing libev/ev.c (file contents):
Revision 1.88 by root, Sat Nov 10 04:40:27 2007 UTC vs.
Revision 1.172 by root, Sun Dec 9 02:27:44 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
44# ifndef EV_USE_MONOTONIC
40# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
41# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
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
42# endif 57# endif
43 58
59# ifndef EV_USE_SELECT
44# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
45# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
46# endif 65# endif
47 66
67# ifndef EV_USE_POLL
48# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
49# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
50# endif 73# endif
51 74
75# ifndef EV_USE_EPOLL
52# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
54# endif 81# endif
55 82
83# ifndef EV_USE_KQUEUE
56# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57# 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
58# endif 105# endif
59 106
60#endif 107#endif
61 108
62#include <math.h> 109#include <math.h>
… …
71#include <sys/types.h> 118#include <sys/types.h>
72#include <time.h> 119#include <time.h>
73 120
74#include <signal.h> 121#include <signal.h>
75 122
76#ifndef WIN32
77# include <unistd.h>
78# include <sys/time.h>
79# include <sys/wait.h>
80#endif
81/**/
82
83#ifndef EV_USE_MONOTONIC
84# define EV_USE_MONOTONIC 1
85#endif
86
87#ifndef EV_USE_SELECT
88# define EV_USE_SELECT 1
89#endif
90
91#ifndef EV_USE_POLL
92# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93#endif
94
95#ifndef EV_USE_EPOLL
96# define EV_USE_EPOLL 0
97#endif
98
99#ifndef EV_USE_KQUEUE
100# define EV_USE_KQUEUE 0
101#endif
102
103#ifndef EV_USE_WIN32
104# ifdef WIN32
105# define EV_USE_WIN32 0 /* it does not exist, use select */
106# undef EV_USE_SELECT
107# define EV_USE_SELECT 1
108# else
109# define EV_USE_WIN32 0
110# endif
111#endif
112
113#ifndef EV_USE_REALTIME
114# define EV_USE_REALTIME 1
115#endif
116
117/**/
118
119#ifndef CLOCK_MONOTONIC
120# undef EV_USE_MONOTONIC
121# define EV_USE_MONOTONIC 0
122#endif
123
124#ifndef CLOCK_REALTIME
125# undef EV_USE_REALTIME
126# define EV_USE_REALTIME 0
127#endif
128
129/**/
130
131#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
133#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
135
136#ifdef EV_H 123#ifdef EV_H
137# include EV_H 124# include EV_H
138#else 125#else
139# include "ev.h" 126# include "ev.h"
140#endif 127#endif
141 128
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
142#if __GNUC__ >= 3 225#if __GNUC__ >= 3
143# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
144# define inline inline 227# define noinline __attribute__ ((noinline))
145#else 228#else
146# define expect(expr,value) (expr) 229# define expect(expr,value) (expr)
147# define inline static 230# define noinline
231# if __STDC_VERSION__ < 199901L
232# define inline
233# endif
148#endif 234#endif
149 235
150#define expect_false(expr) expect ((expr) != 0, 0) 236#define expect_false(expr) expect ((expr) != 0, 0)
151#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
152 245
153#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154#define ABSPRI(w) ((w)->priority - EV_MINPRI) 247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
155 248
249#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */
251
156typedef struct ev_watcher *W; 252typedef ev_watcher *W;
157typedef struct ev_watcher_list *WL; 253typedef ev_watcher_list *WL;
158typedef struct ev_watcher_time *WT; 254typedef ev_watcher_time *WT;
159 255
160static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161 257
258#ifdef _WIN32
162#include "ev_win32.c" 259# include "ev_win32.c"
260#endif
163 261
164/*****************************************************************************/ 262/*****************************************************************************/
165 263
166static void (*syserr_cb)(const char *msg); 264static void (*syserr_cb)(const char *msg);
167 265
266void
168void ev_set_syserr_cb (void (*cb)(const char *msg)) 267ev_set_syserr_cb (void (*cb)(const char *msg))
169{ 268{
170 syserr_cb = cb; 269 syserr_cb = cb;
171} 270}
172 271
173static void 272static void noinline
174syserr (const char *msg) 273syserr (const char *msg)
175{ 274{
176 if (!msg) 275 if (!msg)
177 msg = "(libev) system error"; 276 msg = "(libev) system error";
178 277
… …
185 } 284 }
186} 285}
187 286
188static void *(*alloc)(void *ptr, long size); 287static void *(*alloc)(void *ptr, long size);
189 288
289void
190void ev_set_allocator (void *(*cb)(void *ptr, long size)) 290ev_set_allocator (void *(*cb)(void *ptr, long size))
191{ 291{
192 alloc = cb; 292 alloc = cb;
193} 293}
194 294
195static void * 295inline_speed void *
196ev_realloc (void *ptr, long size) 296ev_realloc (void *ptr, long size)
197{ 297{
198 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199 299
200 if (!ptr && size) 300 if (!ptr && size)
… …
214typedef struct 314typedef struct
215{ 315{
216 WL head; 316 WL head;
217 unsigned char events; 317 unsigned char events;
218 unsigned char reify; 318 unsigned char reify;
319#if EV_SELECT_IS_WINSOCKET
320 SOCKET handle;
321#endif
219} ANFD; 322} ANFD;
220 323
221typedef struct 324typedef struct
222{ 325{
223 W w; 326 W w;
224 int events; 327 int events;
225} ANPENDING; 328} ANPENDING;
226 329
330#if EV_USE_INOTIFY
331typedef struct
332{
333 WL head;
334} ANFS;
335#endif
336
227#if EV_MULTIPLICITY 337#if EV_MULTIPLICITY
228 338
229 struct ev_loop 339 struct ev_loop
230 { 340 {
231 ev_tstamp ev_rt_now; 341 ev_tstamp ev_rt_now;
342 #define ev_rt_now ((loop)->ev_rt_now)
232 #define VAR(name,decl) decl; 343 #define VAR(name,decl) decl;
233 #include "ev_vars.h" 344 #include "ev_vars.h"
234 #undef VAR 345 #undef VAR
235 }; 346 };
236 #include "ev_wrap.h" 347 #include "ev_wrap.h"
237 348
238 struct ev_loop default_loop_struct; 349 static struct ev_loop default_loop_struct;
239 static struct ev_loop *default_loop; 350 struct ev_loop *ev_default_loop_ptr;
240 351
241#else 352#else
242 353
243 ev_tstamp ev_rt_now; 354 ev_tstamp ev_rt_now;
244 #define VAR(name,decl) static decl; 355 #define VAR(name,decl) static decl;
245 #include "ev_vars.h" 356 #include "ev_vars.h"
246 #undef VAR 357 #undef VAR
247 358
248 static int default_loop; 359 static int ev_default_loop_ptr;
249 360
250#endif 361#endif
251 362
252/*****************************************************************************/ 363/*****************************************************************************/
253 364
254inline ev_tstamp 365ev_tstamp
255ev_time (void) 366ev_time (void)
256{ 367{
257#if EV_USE_REALTIME 368#if EV_USE_REALTIME
258 struct timespec ts; 369 struct timespec ts;
259 clock_gettime (CLOCK_REALTIME, &ts); 370 clock_gettime (CLOCK_REALTIME, &ts);
… …
263 gettimeofday (&tv, 0); 374 gettimeofday (&tv, 0);
264 return tv.tv_sec + tv.tv_usec * 1e-6; 375 return tv.tv_sec + tv.tv_usec * 1e-6;
265#endif 376#endif
266} 377}
267 378
268inline ev_tstamp 379ev_tstamp inline_size
269get_clock (void) 380get_clock (void)
270{ 381{
271#if EV_USE_MONOTONIC 382#if EV_USE_MONOTONIC
272 if (expect_true (have_monotonic)) 383 if (expect_true (have_monotonic))
273 { 384 {
… …
286{ 397{
287 return ev_rt_now; 398 return ev_rt_now;
288} 399}
289#endif 400#endif
290 401
291#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}
292 429
293#define array_needsize(type,base,cur,cnt,init) \ 430#define array_needsize(type,base,cur,cnt,init) \
294 if (expect_false ((cnt) > cur)) \ 431 if (expect_false ((cnt) > (cur))) \
295 { \ 432 { \
296 int newcnt = cur; \ 433 int ocur_ = (cur); \
297 do \ 434 (base) = (type *)array_realloc \
298 { \ 435 (sizeof (type), (base), &(cur), (cnt)); \
299 newcnt = array_roundsize (type, newcnt << 1); \ 436 init ((base) + (ocur_), (cur) - ocur_); \
300 } \
301 while ((cnt) > newcnt); \
302 \
303 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
304 init (base + cur, newcnt - cur); \
305 cur = newcnt; \
306 } 437 }
307 438
439#if 0
308#define array_slim(type,stem) \ 440#define array_slim(type,stem) \
309 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 441 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310 { \ 442 { \
311 stem ## max = array_roundsize (stem ## cnt >> 1); \ 443 stem ## max = array_roundsize (stem ## cnt >> 1); \
312 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 444 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314 } 446 }
315 447#endif
316/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318#define array_free_microshit(stem) \
319 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320 448
321#define array_free(stem, idx) \ 449#define array_free(stem, idx) \
322 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;
323 451
324/*****************************************************************************/ 452/*****************************************************************************/
325 453
326static 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
327anfds_init (ANFD *base, int count) 483anfds_init (ANFD *base, int count)
328{ 484{
329 while (count--) 485 while (count--)
330 { 486 {
331 base->head = 0; 487 base->head = 0;
… …
334 490
335 ++base; 491 ++base;
336 } 492 }
337} 493}
338 494
339void 495void inline_speed
340ev_feed_event (EV_P_ void *w, int revents)
341{
342 W w_ = (W)w;
343
344 if (w_->pending)
345 {
346 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
347 return;
348 }
349
350 w_->pending = ++pendingcnt [ABSPRI (w_)];
351 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354}
355
356static void
357queue_events (EV_P_ W *events, int eventcnt, int type)
358{
359 int i;
360
361 for (i = 0; i < eventcnt; ++i)
362 ev_feed_event (EV_A_ events [i], type);
363}
364
365inline void
366fd_event (EV_P_ int fd, int revents) 496fd_event (EV_P_ int fd, int revents)
367{ 497{
368 ANFD *anfd = anfds + fd; 498 ANFD *anfd = anfds + fd;
369 struct ev_io *w; 499 ev_io *w;
370 500
371 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)
372 { 502 {
373 int ev = w->events & revents; 503 int ev = w->events & revents;
374 504
375 if (ev) 505 if (ev)
376 ev_feed_event (EV_A_ (W)w, ev); 506 ev_feed_event (EV_A_ (W)w, ev);
… …
378} 508}
379 509
380void 510void
381ev_feed_fd_event (EV_P_ int fd, int revents) 511ev_feed_fd_event (EV_P_ int fd, int revents)
382{ 512{
513 if (fd >= 0 && fd < anfdmax)
383 fd_event (EV_A_ fd, revents); 514 fd_event (EV_A_ fd, revents);
384} 515}
385 516
386/*****************************************************************************/ 517void inline_size
387
388static void
389fd_reify (EV_P) 518fd_reify (EV_P)
390{ 519{
391 int i; 520 int i;
392 521
393 for (i = 0; i < fdchangecnt; ++i) 522 for (i = 0; i < fdchangecnt; ++i)
394 { 523 {
395 int fd = fdchanges [i]; 524 int fd = fdchanges [i];
396 ANFD *anfd = anfds + fd; 525 ANFD *anfd = anfds + fd;
397 struct ev_io *w; 526 ev_io *w;
398 527
399 int events = 0; 528 int events = 0;
400 529
401 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)
402 events |= w->events; 531 events |= w->events;
403 532
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
404 anfd->reify = 0; 542 anfd->reify = 0;
405 543
406 method_modify (EV_A_ fd, anfd->events, events); 544 backend_modify (EV_A_ fd, anfd->events, events);
407 anfd->events = events; 545 anfd->events = events;
408 } 546 }
409 547
410 fdchangecnt = 0; 548 fdchangecnt = 0;
411} 549}
412 550
413static void 551void inline_size
414fd_change (EV_P_ int fd) 552fd_change (EV_P_ int fd)
415{ 553{
416 if (anfds [fd].reify) 554 if (expect_false (anfds [fd].reify))
417 return; 555 return;
418 556
419 anfds [fd].reify = 1; 557 anfds [fd].reify = 1;
420 558
421 ++fdchangecnt; 559 ++fdchangecnt;
422 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423 fdchanges [fdchangecnt - 1] = fd; 561 fdchanges [fdchangecnt - 1] = fd;
424} 562}
425 563
426static void 564void inline_speed
427fd_kill (EV_P_ int fd) 565fd_kill (EV_P_ int fd)
428{ 566{
429 struct ev_io *w; 567 ev_io *w;
430 568
431 while ((w = (struct ev_io *)anfds [fd].head)) 569 while ((w = (ev_io *)anfds [fd].head))
432 { 570 {
433 ev_io_stop (EV_A_ w); 571 ev_io_stop (EV_A_ w);
434 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);
435 } 573 }
436} 574}
437 575
438static int 576int inline_size
439fd_valid (int fd) 577fd_valid (int fd)
440{ 578{
441#ifdef WIN32 579#ifdef _WIN32
442 return !!win32_get_osfhandle (fd); 580 return _get_osfhandle (fd) != -1;
443#else 581#else
444 return fcntl (fd, F_GETFD) != -1; 582 return fcntl (fd, F_GETFD) != -1;
445#endif 583#endif
446} 584}
447 585
448/* called on EBADF to verify fds */ 586/* called on EBADF to verify fds */
449static void 587static void noinline
450fd_ebadf (EV_P) 588fd_ebadf (EV_P)
451{ 589{
452 int fd; 590 int fd;
453 591
454 for (fd = 0; fd < anfdmax; ++fd) 592 for (fd = 0; fd < anfdmax; ++fd)
… …
456 if (!fd_valid (fd) == -1 && errno == EBADF) 594 if (!fd_valid (fd) == -1 && errno == EBADF)
457 fd_kill (EV_A_ fd); 595 fd_kill (EV_A_ fd);
458} 596}
459 597
460/* 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 */
461static void 599static void noinline
462fd_enomem (EV_P) 600fd_enomem (EV_P)
463{ 601{
464 int fd; 602 int fd;
465 603
466 for (fd = anfdmax; fd--; ) 604 for (fd = anfdmax; fd--; )
… …
469 fd_kill (EV_A_ fd); 607 fd_kill (EV_A_ fd);
470 return; 608 return;
471 } 609 }
472} 610}
473 611
474/* 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 */
475static void 613static void noinline
476fd_rearm_all (EV_P) 614fd_rearm_all (EV_P)
477{ 615{
478 int fd; 616 int fd;
479 617
480 /* this should be highly optimised to not do anything but set a flag */
481 for (fd = 0; fd < anfdmax; ++fd) 618 for (fd = 0; fd < anfdmax; ++fd)
482 if (anfds [fd].events) 619 if (anfds [fd].events)
483 { 620 {
484 anfds [fd].events = 0; 621 anfds [fd].events = 0;
485 fd_change (EV_A_ fd); 622 fd_change (EV_A_ fd);
486 } 623 }
487} 624}
488 625
489/*****************************************************************************/ 626/*****************************************************************************/
490 627
491static void 628void inline_speed
492upheap (WT *heap, int k) 629upheap (WT *heap, int k)
493{ 630{
494 WT w = heap [k]; 631 WT w = heap [k];
495 632
496 while (k && heap [k >> 1]->at > w->at) 633 while (k && heap [k >> 1]->at > w->at)
… …
503 heap [k] = w; 640 heap [k] = w;
504 ((W)heap [k])->active = k + 1; 641 ((W)heap [k])->active = k + 1;
505 642
506} 643}
507 644
508static void 645void inline_speed
509downheap (WT *heap, int N, int k) 646downheap (WT *heap, int N, int k)
510{ 647{
511 WT w = heap [k]; 648 WT w = heap [k];
512 649
513 while (k < (N >> 1)) 650 while (k < (N >> 1))
… …
527 664
528 heap [k] = w; 665 heap [k] = w;
529 ((W)heap [k])->active = k + 1; 666 ((W)heap [k])->active = k + 1;
530} 667}
531 668
532inline void 669void inline_size
533adjustheap (WT *heap, int N, int k, ev_tstamp at) 670adjustheap (WT *heap, int N, int k)
534{ 671{
535 ev_tstamp old_at = heap [k]->at; 672 upheap (heap, k);
536 heap [k]->at = at;
537
538 if (old_at < at)
539 downheap (heap, N, k); 673 downheap (heap, N, k);
540 else
541 upheap (heap, k);
542} 674}
543 675
544/*****************************************************************************/ 676/*****************************************************************************/
545 677
546typedef struct 678typedef struct
… …
552static ANSIG *signals; 684static ANSIG *signals;
553static int signalmax; 685static int signalmax;
554 686
555static int sigpipe [2]; 687static int sigpipe [2];
556static sig_atomic_t volatile gotsig; 688static sig_atomic_t volatile gotsig;
557static struct ev_io sigev; 689static ev_io sigev;
558 690
559static void 691void inline_size
560signals_init (ANSIG *base, int count) 692signals_init (ANSIG *base, int count)
561{ 693{
562 while (count--) 694 while (count--)
563 { 695 {
564 base->head = 0; 696 base->head = 0;
… …
569} 701}
570 702
571static void 703static void
572sighandler (int signum) 704sighandler (int signum)
573{ 705{
574#if WIN32 706#if _WIN32
575 signal (signum, sighandler); 707 signal (signum, sighandler);
576#endif 708#endif
577 709
578 signals [signum - 1].gotsig = 1; 710 signals [signum - 1].gotsig = 1;
579 711
580 if (!gotsig) 712 if (!gotsig)
581 { 713 {
582 int old_errno = errno; 714 int old_errno = errno;
583 gotsig = 1; 715 gotsig = 1;
584#ifdef WIN32
585 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586#else
587 write (sigpipe [1], &signum, 1); 716 write (sigpipe [1], &signum, 1);
588#endif
589 errno = old_errno; 717 errno = old_errno;
590 } 718 }
591} 719}
592 720
593void 721void noinline
594ev_feed_signal_event (EV_P_ int signum) 722ev_feed_signal_event (EV_P_ int signum)
595{ 723{
596 WL w; 724 WL w;
597 725
598#if EV_MULTIPLICITY 726#if EV_MULTIPLICITY
599 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));
600#endif 728#endif
601 729
602 --signum; 730 --signum;
603 731
604 if (signum < 0 || signum >= signalmax) 732 if (signum < 0 || signum >= signalmax)
… …
609 for (w = signals [signum].head; w; w = w->next) 737 for (w = signals [signum].head; w; w = w->next)
610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 738 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611} 739}
612 740
613static void 741static void
614sigcb (EV_P_ struct ev_io *iow, int revents) 742sigcb (EV_P_ ev_io *iow, int revents)
615{ 743{
616 int signum; 744 int signum;
617 745
618#ifdef WIN32
619 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620#else
621 read (sigpipe [0], &revents, 1); 746 read (sigpipe [0], &revents, 1);
622#endif
623 gotsig = 0; 747 gotsig = 0;
624 748
625 for (signum = signalmax; signum--; ) 749 for (signum = signalmax; signum--; )
626 if (signals [signum].gotsig) 750 if (signals [signum].gotsig)
627 ev_feed_signal_event (EV_A_ signum + 1); 751 ev_feed_signal_event (EV_A_ signum + 1);
628} 752}
629 753
630static 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
631siginit (EV_P) 767siginit (EV_P)
632{ 768{
633#ifndef WIN32 769 fd_intern (sigpipe [0]);
634 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 770 fd_intern (sigpipe [1]);
635 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637 /* rather than sort out wether we really need nb, set it */
638 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640#endif
641 771
642 ev_io_set (&sigev, sigpipe [0], EV_READ); 772 ev_io_set (&sigev, sigpipe [0], EV_READ);
643 ev_io_start (EV_A_ &sigev); 773 ev_io_start (EV_A_ &sigev);
644 ev_unref (EV_A); /* child watcher should not keep loop alive */ 774 ev_unref (EV_A); /* child watcher should not keep loop alive */
645} 775}
646 776
647/*****************************************************************************/ 777/*****************************************************************************/
648 778
649static struct ev_child *childs [PID_HASHSIZE]; 779static ev_child *childs [EV_PID_HASHSIZE];
650 780
651#ifndef WIN32 781#ifndef _WIN32
652 782
653static 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}
654 799
655#ifndef WCONTINUED 800#ifndef WCONTINUED
656# define WCONTINUED 0 801# define WCONTINUED 0
657#endif 802#endif
658 803
659static void 804static void
660child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
661{
662 struct ev_child *w;
663
664 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
665 if (w->pid == pid || !w->pid)
666 {
667 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668 w->rpid = pid;
669 w->rstatus = status;
670 ev_feed_event (EV_A_ (W)w, EV_CHILD);
671 }
672}
673
674static void
675childcb (EV_P_ struct ev_signal *sw, int revents) 805childcb (EV_P_ ev_signal *sw, int revents)
676{ 806{
677 int pid, status; 807 int pid, status;
678 808
809 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 810 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680 { 811 if (!WCONTINUED
812 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return;
815
681 /* 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 */
682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683 819
684 child_reap (EV_A_ sw, pid, pid, status); 820 child_reap (EV_A_ sw, pid, pid, status);
821 if (EV_PID_HASHSIZE > 1)
685 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 */
686 }
687} 823}
688 824
689#endif 825#endif
690 826
691/*****************************************************************************/ 827/*****************************************************************************/
692 828
829#if EV_USE_PORT
830# include "ev_port.c"
831#endif
693#if EV_USE_KQUEUE 832#if EV_USE_KQUEUE
694# include "ev_kqueue.c" 833# include "ev_kqueue.c"
695#endif 834#endif
696#if EV_USE_EPOLL 835#if EV_USE_EPOLL
697# include "ev_epoll.c" 836# include "ev_epoll.c"
… …
714{ 853{
715 return EV_VERSION_MINOR; 854 return EV_VERSION_MINOR;
716} 855}
717 856
718/* 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 */
719static int 858int inline_size
720enable_secure (void) 859enable_secure (void)
721{ 860{
722#ifdef WIN32 861#ifdef _WIN32
723 return 0; 862 return 0;
724#else 863#else
725 return getuid () != geteuid () 864 return getuid () != geteuid ()
726 || getgid () != getegid (); 865 || getgid () != getegid ();
727#endif 866#endif
728} 867}
729 868
730int 869unsigned int
731ev_method (EV_P) 870ev_supported_backends (void)
732{ 871{
733 return method; 872 unsigned int flags = 0;
734}
735 873
736static void 874 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737loop_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)
738{ 885{
739 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)
740 { 925 {
741#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
742 { 927 {
743 struct timespec ts; 928 struct timespec ts;
744 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 929 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
749 ev_rt_now = ev_time (); 934 ev_rt_now = ev_time ();
750 mn_now = get_clock (); 935 mn_now = get_clock ();
751 now_floor = mn_now; 936 now_floor = mn_now;
752 rtmn_diff = ev_rt_now - mn_now; 937 rtmn_diff = ev_rt_now - mn_now;
753 938
754 if (methods == EVMETHOD_AUTO) 939 /* pid check not overridable via env */
755 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"))
756 methods = atoi (getenv ("LIBEV_METHODS")); 948 flags = atoi (getenv ("LIBEV_FLAGS"));
757 else
758 methods = EVMETHOD_ANY;
759 949
760 method = 0; 950 if (!(flags & 0x0000ffffUL))
951 flags |= ev_recommended_backends ();
952
953 backend = 0;
954 backend_fd = -1;
761#if EV_USE_WIN32 955#if EV_USE_INOTIFY
762 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);
763#endif 961#endif
764#if EV_USE_KQUEUE 962#if EV_USE_KQUEUE
765 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766#endif 964#endif
767#if EV_USE_EPOLL 965#if EV_USE_EPOLL
768 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769#endif 967#endif
770#if EV_USE_POLL 968#if EV_USE_POLL
771 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772#endif 970#endif
773#if EV_USE_SELECT 971#if EV_USE_SELECT
774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775#endif 973#endif
776 974
777 ev_init (&sigev, sigcb); 975 ev_init (&sigev, sigcb);
778 ev_set_priority (&sigev, EV_MAXPRI); 976 ev_set_priority (&sigev, EV_MAXPRI);
779 } 977 }
780} 978}
781 979
782void 980static void noinline
783loop_destroy (EV_P) 981loop_destroy (EV_P)
784{ 982{
785 int i; 983 int i;
786 984
787#if EV_USE_WIN32 985#if EV_USE_INOTIFY
788 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);
789#endif 995#endif
790#if EV_USE_KQUEUE 996#if EV_USE_KQUEUE
791 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792#endif 998#endif
793#if EV_USE_EPOLL 999#if EV_USE_EPOLL
794 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1000 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795#endif 1001#endif
796#if EV_USE_POLL 1002#if EV_USE_POLL
797 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1003 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798#endif 1004#endif
799#if EV_USE_SELECT 1005#if EV_USE_SELECT
800 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1006 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801#endif 1007#endif
802 1008
803 for (i = NUMPRI; i--; ) 1009 for (i = NUMPRI; i--; )
1010 {
804 array_free (pending, [i]); 1011 array_free (pending, [i]);
1012#if EV_IDLE_ENABLE
1013 array_free (idle, [i]);
1014#endif
1015 }
805 1016
806 /* have to use the microsoft-never-gets-it-right macro */ 1017 /* have to use the microsoft-never-gets-it-right macro */
807 array_free_microshit (fdchange); 1018 array_free (fdchange, EMPTY);
808 array_free_microshit (timer); 1019 array_free (timer, EMPTY);
809 array_free_microshit (periodic); 1020#if EV_PERIODIC_ENABLE
810 array_free_microshit (idle); 1021 array_free (periodic, EMPTY);
811 array_free_microshit (prepare); 1022#endif
812 array_free_microshit (check); 1023 array_free (prepare, EMPTY);
1024 array_free (check, EMPTY);
813 1025
814 method = 0; 1026 backend = 0;
815} 1027}
816 1028
817static void 1029void inline_size infy_fork (EV_P);
1030
1031void inline_size
818loop_fork (EV_P) 1032loop_fork (EV_P)
819{ 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
820#if EV_USE_EPOLL 1040#if EV_USE_EPOLL
821 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1041 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822#endif 1042#endif
823#if EV_USE_KQUEUE 1043#if EV_USE_INOTIFY
824 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1044 infy_fork (EV_A);
825#endif 1045#endif
826 1046
827 if (ev_is_active (&sigev)) 1047 if (ev_is_active (&sigev))
828 { 1048 {
829 /* default loop */ 1049 /* default loop */
… …
842 postfork = 0; 1062 postfork = 0;
843} 1063}
844 1064
845#if EV_MULTIPLICITY 1065#if EV_MULTIPLICITY
846struct ev_loop * 1066struct ev_loop *
847ev_loop_new (int methods) 1067ev_loop_new (unsigned int flags)
848{ 1068{
849 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));
850 1070
851 memset (loop, 0, sizeof (struct ev_loop)); 1071 memset (loop, 0, sizeof (struct ev_loop));
852 1072
853 loop_init (EV_A_ methods); 1073 loop_init (EV_A_ flags);
854 1074
855 if (ev_method (EV_A)) 1075 if (ev_backend (EV_A))
856 return loop; 1076 return loop;
857 1077
858 return 0; 1078 return 0;
859} 1079}
860 1080
… …
873 1093
874#endif 1094#endif
875 1095
876#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
877struct ev_loop * 1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
878#else 1099#else
879int 1100int
1101ev_default_loop (unsigned int flags)
880#endif 1102#endif
881ev_default_loop (int methods)
882{ 1103{
883 if (sigpipe [0] == sigpipe [1]) 1104 if (sigpipe [0] == sigpipe [1])
884 if (pipe (sigpipe)) 1105 if (pipe (sigpipe))
885 return 0; 1106 return 0;
886 1107
887 if (!default_loop) 1108 if (!ev_default_loop_ptr)
888 { 1109 {
889#if EV_MULTIPLICITY 1110#if EV_MULTIPLICITY
890 struct ev_loop *loop = default_loop = &default_loop_struct; 1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891#else 1112#else
892 default_loop = 1; 1113 ev_default_loop_ptr = 1;
893#endif 1114#endif
894 1115
895 loop_init (EV_A_ methods); 1116 loop_init (EV_A_ flags);
896 1117
897 if (ev_method (EV_A)) 1118 if (ev_backend (EV_A))
898 { 1119 {
899 siginit (EV_A); 1120 siginit (EV_A);
900 1121
901#ifndef WIN32 1122#ifndef _WIN32
902 ev_signal_init (&childev, childcb, SIGCHLD); 1123 ev_signal_init (&childev, childcb, SIGCHLD);
903 ev_set_priority (&childev, EV_MAXPRI); 1124 ev_set_priority (&childev, EV_MAXPRI);
904 ev_signal_start (EV_A_ &childev); 1125 ev_signal_start (EV_A_ &childev);
905 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1126 ev_unref (EV_A); /* child watcher should not keep loop alive */
906#endif 1127#endif
907 } 1128 }
908 else 1129 else
909 default_loop = 0; 1130 ev_default_loop_ptr = 0;
910 } 1131 }
911 1132
912 return default_loop; 1133 return ev_default_loop_ptr;
913} 1134}
914 1135
915void 1136void
916ev_default_destroy (void) 1137ev_default_destroy (void)
917{ 1138{
918#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
919 struct ev_loop *loop = default_loop; 1140 struct ev_loop *loop = ev_default_loop_ptr;
920#endif 1141#endif
921 1142
922#ifndef WIN32 1143#ifndef _WIN32
923 ev_ref (EV_A); /* child watcher */ 1144 ev_ref (EV_A); /* child watcher */
924 ev_signal_stop (EV_A_ &childev); 1145 ev_signal_stop (EV_A_ &childev);
925#endif 1146#endif
926 1147
927 ev_ref (EV_A); /* signal watcher */ 1148 ev_ref (EV_A); /* signal watcher */
… …
935 1156
936void 1157void
937ev_default_fork (void) 1158ev_default_fork (void)
938{ 1159{
939#if EV_MULTIPLICITY 1160#if EV_MULTIPLICITY
940 struct ev_loop *loop = default_loop; 1161 struct ev_loop *loop = ev_default_loop_ptr;
941#endif 1162#endif
942 1163
943 if (method) 1164 if (backend)
944 postfork = 1; 1165 postfork = 1;
945} 1166}
946 1167
947/*****************************************************************************/ 1168/*****************************************************************************/
948 1169
949static int 1170void
950any_pending (EV_P) 1171ev_invoke (EV_P_ void *w, int revents)
951{ 1172{
952 int pri; 1173 EV_CB_INVOKE ((W)w, revents);
953
954 for (pri = NUMPRI; pri--; )
955 if (pendingcnt [pri])
956 return 1;
957
958 return 0;
959} 1174}
960 1175
961static void 1176void inline_speed
962call_pending (EV_P) 1177call_pending (EV_P)
963{ 1178{
964 int pri; 1179 int pri;
965 1180
966 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
967 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
968 { 1183 {
969 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970 1185
971 if (p->w) 1186 if (expect_true (p->w))
972 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
973 p->w->pending = 0; 1190 p->w->pending = 0;
974 EV_CB_INVOKE (p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
975 } 1192 }
976 } 1193 }
977} 1194}
978 1195
979static void 1196void inline_size
980timers_reify (EV_P) 1197timers_reify (EV_P)
981{ 1198{
982 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
983 { 1200 {
984 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
985 1202
986 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987 1204
988 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
989 if (w->repeat) 1206 if (w->repeat)
990 { 1207 {
991 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.));
1209
992 ((WT)w)->at = mn_now + w->repeat; 1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
993 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
994 } 1215 }
995 else 1216 else
996 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997 1218
998 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
999 } 1220 }
1000} 1221}
1001 1222
1002static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
1003periodics_reify (EV_P) 1225periodics_reify (EV_P)
1004{ 1226{
1005 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1006 { 1228 {
1007 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
1008 1230
1009 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1010 1232
1011 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
1012 if (w->reschedule_cb) 1234 if (w->reschedule_cb)
1013 { 1235 {
1014 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 + 0.0001);
1015
1016 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));
1017 downheap ((WT *)periodics, periodiccnt, 0); 1238 downheap ((WT *)periodics, periodiccnt, 0);
1018 } 1239 }
1019 else if (w->interval) 1240 else if (w->interval)
1020 { 1241 {
… …
1027 1248
1028 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1029 } 1250 }
1030} 1251}
1031 1252
1032static void 1253static void noinline
1033periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
1034{ 1255{
1035 int i; 1256 int i;
1036 1257
1037 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
1038 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
1039 { 1260 {
1040 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
1041 1262
1042 if (w->reschedule_cb) 1263 if (w->reschedule_cb)
1043 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1044 else if (w->interval) 1265 else if (w->interval)
1045 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
… …
1047 1268
1048 /* now rebuild the heap */ 1269 /* now rebuild the heap */
1049 for (i = periodiccnt >> 1; i--; ) 1270 for (i = periodiccnt >> 1; i--; )
1050 downheap ((WT *)periodics, periodiccnt, i); 1271 downheap ((WT *)periodics, periodiccnt, i);
1051} 1272}
1273#endif
1052 1274
1053inline 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
1054time_update_monotonic (EV_P) 1299time_update_monotonic (EV_P)
1055{ 1300{
1056 mn_now = get_clock (); 1301 mn_now = get_clock ();
1057 1302
1058 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
… …
1066 ev_rt_now = ev_time (); 1311 ev_rt_now = ev_time ();
1067 return 1; 1312 return 1;
1068 } 1313 }
1069} 1314}
1070 1315
1071static void 1316void inline_size
1072time_update (EV_P) 1317time_update (EV_P)
1073{ 1318{
1074 int i; 1319 int i;
1075 1320
1076#if EV_USE_MONOTONIC 1321#if EV_USE_MONOTONIC
… …
1078 { 1323 {
1079 if (time_update_monotonic (EV_A)) 1324 if (time_update_monotonic (EV_A))
1080 { 1325 {
1081 ev_tstamp odiff = rtmn_diff; 1326 ev_tstamp odiff = rtmn_diff;
1082 1327
1083 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; )
1084 { 1337 {
1085 rtmn_diff = ev_rt_now - mn_now; 1338 rtmn_diff = ev_rt_now - mn_now;
1086 1339
1087 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1088 return; /* all is well */ 1341 return; /* all is well */
… …
1090 ev_rt_now = ev_time (); 1343 ev_rt_now = ev_time ();
1091 mn_now = get_clock (); 1344 mn_now = get_clock ();
1092 now_floor = mn_now; 1345 now_floor = mn_now;
1093 } 1346 }
1094 1347
1348# if EV_PERIODIC_ENABLE
1095 periodics_reschedule (EV_A); 1349 periodics_reschedule (EV_A);
1350# endif
1096 /* no timer adjustment, as the monotonic clock doesn't jump */ 1351 /* no timer adjustment, as the monotonic clock doesn't jump */
1097 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098 } 1353 }
1099 } 1354 }
1100 else 1355 else
… …
1102 { 1357 {
1103 ev_rt_now = ev_time (); 1358 ev_rt_now = ev_time ();
1104 1359
1105 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))
1106 { 1361 {
1362#if EV_PERIODIC_ENABLE
1107 periodics_reschedule (EV_A); 1363 periodics_reschedule (EV_A);
1364#endif
1108 1365
1109 /* 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 */
1110 for (i = 0; i < timercnt; ++i) 1367 for (i = 0; i < timercnt; ++i)
1111 ((WT)timers [i])->at += ev_rt_now - mn_now; 1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
1112 } 1369 }
1113 1370
1114 mn_now = ev_rt_now; 1371 mn_now = ev_rt_now;
… …
1130static int loop_done; 1387static int loop_done;
1131 1388
1132void 1389void
1133ev_loop (EV_P_ int flags) 1390ev_loop (EV_P_ int flags)
1134{ 1391{
1135 double block;
1136 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 */
1137 1397
1138 do 1398 do
1139 { 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
1140 /* queue check watchers (and execute them) */ 1419 /* queue prepare watchers (and execute them) */
1141 if (expect_false (preparecnt)) 1420 if (expect_false (preparecnt))
1142 { 1421 {
1143 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1144 call_pending (EV_A); 1423 call_pending (EV_A);
1145 } 1424 }
1146 1425
1426 if (expect_false (!activecnt))
1427 break;
1428
1147 /* we might have forked, so reify kernel state if necessary */ 1429 /* we might have forked, so reify kernel state if necessary */
1148 if (expect_false (postfork)) 1430 if (expect_false (postfork))
1149 loop_fork (EV_A); 1431 loop_fork (EV_A);
1150 1432
1151 /* update fd-related kernel structures */ 1433 /* update fd-related kernel structures */
1152 fd_reify (EV_A); 1434 fd_reify (EV_A);
1153 1435
1154 /* calculate blocking time */ 1436 /* calculate blocking time */
1437 {
1438 ev_tstamp block;
1155 1439
1156 /* we only need this for !monotonic clock or timers, but as we basically 1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1157 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 */
1158#if EV_USE_MONOTONIC 1445#if EV_USE_MONOTONIC
1159 if (expect_true (have_monotonic)) 1446 if (expect_true (have_monotonic))
1160 time_update_monotonic (EV_A); 1447 time_update_monotonic (EV_A);
1161 else 1448 else
1162#endif 1449#endif
1163 { 1450 {
1164 ev_rt_now = ev_time (); 1451 ev_rt_now = ev_time ();
1165 mn_now = ev_rt_now; 1452 mn_now = ev_rt_now;
1166 } 1453 }
1167 1454
1168 if (flags & EVLOOP_NONBLOCK || idlecnt)
1169 block = 0.;
1170 else
1171 {
1172 block = MAX_BLOCKTIME; 1455 block = MAX_BLOCKTIME;
1173 1456
1174 if (timercnt) 1457 if (timercnt)
1175 { 1458 {
1176 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1177 if (block > to) block = to; 1460 if (block > to) block = to;
1178 } 1461 }
1179 1462
1463#if EV_PERIODIC_ENABLE
1180 if (periodiccnt) 1464 if (periodiccnt)
1181 { 1465 {
1182 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;
1183 if (block > to) block = to; 1467 if (block > to) block = to;
1184 } 1468 }
1469#endif
1185 1470
1186 if (block < 0.) block = 0.; 1471 if (expect_false (block < 0.)) block = 0.;
1187 } 1472 }
1188 1473
1474 ++loop_count;
1189 method_poll (EV_A_ block); 1475 backend_poll (EV_A_ block);
1476 }
1190 1477
1191 /* update ev_rt_now, do magic */ 1478 /* update ev_rt_now, do magic */
1192 time_update (EV_A); 1479 time_update (EV_A);
1193 1480
1194 /* queue pending timers and reschedule them */ 1481 /* queue pending timers and reschedule them */
1195 timers_reify (EV_A); /* relative timers called last */ 1482 timers_reify (EV_A); /* relative timers called last */
1483#if EV_PERIODIC_ENABLE
1196 periodics_reify (EV_A); /* absolute timers called first */ 1484 periodics_reify (EV_A); /* absolute timers called first */
1485#endif
1197 1486
1487#if EV_IDLE_ENABLE
1198 /* queue idle watchers unless io or timers are pending */ 1488 /* queue idle watchers unless other events are pending */
1199 if (idlecnt && !any_pending (EV_A)) 1489 idle_reify (EV_A);
1200 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1490#endif
1201 1491
1202 /* queue check watchers, to be executed first */ 1492 /* queue check watchers, to be executed first */
1203 if (checkcnt) 1493 if (expect_false (checkcnt))
1204 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1205 1495
1206 call_pending (EV_A); 1496 call_pending (EV_A);
1497
1207 } 1498 }
1208 while (activecnt && !loop_done); 1499 while (expect_true (activecnt && !loop_done));
1209 1500
1210 if (loop_done != 2) 1501 if (loop_done == EVUNLOOP_ONE)
1211 loop_done = 0; 1502 loop_done = EVUNLOOP_CANCEL;
1212} 1503}
1213 1504
1214void 1505void
1215ev_unloop (EV_P_ int how) 1506ev_unloop (EV_P_ int how)
1216{ 1507{
1217 loop_done = how; 1508 loop_done = how;
1218} 1509}
1219 1510
1220/*****************************************************************************/ 1511/*****************************************************************************/
1221 1512
1222inline void 1513void inline_size
1223wlist_add (WL *head, WL elem) 1514wlist_add (WL *head, WL elem)
1224{ 1515{
1225 elem->next = *head; 1516 elem->next = *head;
1226 *head = elem; 1517 *head = elem;
1227} 1518}
1228 1519
1229inline void 1520void inline_size
1230wlist_del (WL *head, WL elem) 1521wlist_del (WL *head, WL elem)
1231{ 1522{
1232 while (*head) 1523 while (*head)
1233 { 1524 {
1234 if (*head == elem) 1525 if (*head == elem)
… …
1239 1530
1240 head = &(*head)->next; 1531 head = &(*head)->next;
1241 } 1532 }
1242} 1533}
1243 1534
1244inline void 1535void inline_speed
1245ev_clear_pending (EV_P_ W w) 1536clear_pending (EV_P_ W w)
1246{ 1537{
1247 if (w->pending) 1538 if (w->pending)
1248 { 1539 {
1249 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1540 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1250 w->pending = 0; 1541 w->pending = 0;
1251 } 1542 }
1252} 1543}
1253 1544
1254inline 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
1255ev_start (EV_P_ W w, int active) 1572ev_start (EV_P_ W w, int active)
1256{ 1573{
1257 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1574 pri_adjust (EV_A_ w);
1258 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1259
1260 w->active = active; 1575 w->active = active;
1261 ev_ref (EV_A); 1576 ev_ref (EV_A);
1262} 1577}
1263 1578
1264inline void 1579void inline_size
1265ev_stop (EV_P_ W w) 1580ev_stop (EV_P_ W w)
1266{ 1581{
1267 ev_unref (EV_A); 1582 ev_unref (EV_A);
1268 w->active = 0; 1583 w->active = 0;
1269} 1584}
1270 1585
1271/*****************************************************************************/ 1586/*****************************************************************************/
1272 1587
1273void 1588void noinline
1274ev_io_start (EV_P_ struct ev_io *w) 1589ev_io_start (EV_P_ ev_io *w)
1275{ 1590{
1276 int fd = w->fd; 1591 int fd = w->fd;
1277 1592
1278 if (ev_is_active (w)) 1593 if (expect_false (ev_is_active (w)))
1279 return; 1594 return;
1280 1595
1281 assert (("ev_io_start called with negative fd", fd >= 0)); 1596 assert (("ev_io_start called with negative fd", fd >= 0));
1282 1597
1283 ev_start (EV_A_ (W)w, 1); 1598 ev_start (EV_A_ (W)w, 1);
… …
1285 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1600 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1286 1601
1287 fd_change (EV_A_ fd); 1602 fd_change (EV_A_ fd);
1288} 1603}
1289 1604
1290void 1605void noinline
1291ev_io_stop (EV_P_ struct ev_io *w) 1606ev_io_stop (EV_P_ ev_io *w)
1292{ 1607{
1293 ev_clear_pending (EV_A_ (W)w); 1608 clear_pending (EV_A_ (W)w);
1294 if (!ev_is_active (w)) 1609 if (expect_false (!ev_is_active (w)))
1295 return; 1610 return;
1611
1612 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1296 1613
1297 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1614 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1298 ev_stop (EV_A_ (W)w); 1615 ev_stop (EV_A_ (W)w);
1299 1616
1300 fd_change (EV_A_ w->fd); 1617 fd_change (EV_A_ w->fd);
1301} 1618}
1302 1619
1303void 1620void noinline
1304ev_timer_start (EV_P_ struct ev_timer *w) 1621ev_timer_start (EV_P_ ev_timer *w)
1305{ 1622{
1306 if (ev_is_active (w)) 1623 if (expect_false (ev_is_active (w)))
1307 return; 1624 return;
1308 1625
1309 ((WT)w)->at += mn_now; 1626 ((WT)w)->at += mn_now;
1310 1627
1311 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.));
1312 1629
1313 ev_start (EV_A_ (W)w, ++timercnt); 1630 ev_start (EV_A_ (W)w, ++timercnt);
1314 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1631 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1315 timers [timercnt - 1] = w; 1632 timers [timercnt - 1] = w;
1316 upheap ((WT *)timers, timercnt - 1); 1633 upheap ((WT *)timers, timercnt - 1);
1317 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
1318 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1645 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1319}
1320 1646
1321void 1647 {
1322ev_timer_stop (EV_P_ struct ev_timer *w) 1648 int active = ((W)w)->active;
1323{
1324 ev_clear_pending (EV_A_ (W)w);
1325 if (!ev_is_active (w))
1326 return;
1327 1649
1328 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1650 if (expect_true (--active < --timercnt))
1329
1330 if (((W)w)->active < timercnt--)
1331 { 1651 {
1332 timers [((W)w)->active - 1] = timers [timercnt]; 1652 timers [active] = timers [timercnt];
1333 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1653 adjustheap ((WT *)timers, timercnt, active);
1334 } 1654 }
1655 }
1335 1656
1336 ((WT)w)->at = w->repeat; 1657 ((WT)w)->at -= mn_now;
1337 1658
1338 ev_stop (EV_A_ (W)w); 1659 ev_stop (EV_A_ (W)w);
1339} 1660}
1340 1661
1341void 1662void noinline
1342ev_timer_again (EV_P_ struct ev_timer *w) 1663ev_timer_again (EV_P_ ev_timer *w)
1343{ 1664{
1344 if (ev_is_active (w)) 1665 if (ev_is_active (w))
1345 { 1666 {
1346 if (w->repeat) 1667 if (w->repeat)
1668 {
1669 ((WT)w)->at = mn_now + w->repeat;
1347 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1670 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1671 }
1348 else 1672 else
1349 ev_timer_stop (EV_A_ w); 1673 ev_timer_stop (EV_A_ w);
1350 } 1674 }
1351 else if (w->repeat) 1675 else if (w->repeat)
1676 {
1677 w->at = w->repeat;
1352 ev_timer_start (EV_A_ w); 1678 ev_timer_start (EV_A_ w);
1679 }
1353} 1680}
1354 1681
1355void 1682#if EV_PERIODIC_ENABLE
1683void noinline
1356ev_periodic_start (EV_P_ struct ev_periodic *w) 1684ev_periodic_start (EV_P_ ev_periodic *w)
1357{ 1685{
1358 if (ev_is_active (w)) 1686 if (expect_false (ev_is_active (w)))
1359 return; 1687 return;
1360 1688
1361 if (w->reschedule_cb) 1689 if (w->reschedule_cb)
1362 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1690 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1363 else if (w->interval) 1691 else if (w->interval)
… …
1366 /* 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 */
1367 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1695 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1368 } 1696 }
1369 1697
1370 ev_start (EV_A_ (W)w, ++periodiccnt); 1698 ev_start (EV_A_ (W)w, ++periodiccnt);
1371 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1699 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1372 periodics [periodiccnt - 1] = w; 1700 periodics [periodiccnt - 1] = w;
1373 upheap ((WT *)periodics, periodiccnt - 1); 1701 upheap ((WT *)periodics, periodiccnt - 1);
1374 1702
1703 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1704}
1705
1706void noinline
1707ev_periodic_stop (EV_P_ ev_periodic *w)
1708{
1709 clear_pending (EV_A_ (W)w);
1710 if (expect_false (!ev_is_active (w)))
1711 return;
1712
1375 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1713 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1376}
1377 1714
1378void 1715 {
1379ev_periodic_stop (EV_P_ struct ev_periodic *w) 1716 int active = ((W)w)->active;
1380{
1381 ev_clear_pending (EV_A_ (W)w);
1382 if (!ev_is_active (w))
1383 return;
1384 1717
1385 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1718 if (expect_true (--active < --periodiccnt))
1386
1387 if (((W)w)->active < periodiccnt--)
1388 { 1719 {
1389 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1720 periodics [active] = periodics [periodiccnt];
1390 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1721 adjustheap ((WT *)periodics, periodiccnt, active);
1391 } 1722 }
1723 }
1392 1724
1393 ev_stop (EV_A_ (W)w); 1725 ev_stop (EV_A_ (W)w);
1394} 1726}
1395 1727
1396void 1728void noinline
1397ev_periodic_again (EV_P_ struct ev_periodic *w) 1729ev_periodic_again (EV_P_ ev_periodic *w)
1398{ 1730{
1399 /* TODO: use adjustheap and recalculation */ 1731 /* TODO: use adjustheap and recalculation */
1400 ev_periodic_stop (EV_A_ w); 1732 ev_periodic_stop (EV_A_ w);
1401 ev_periodic_start (EV_A_ w); 1733 ev_periodic_start (EV_A_ w);
1402} 1734}
1403 1735#endif
1404void
1405ev_idle_start (EV_P_ struct ev_idle *w)
1406{
1407 if (ev_is_active (w))
1408 return;
1409
1410 ev_start (EV_A_ (W)w, ++idlecnt);
1411 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1412 idles [idlecnt - 1] = w;
1413}
1414
1415void
1416ev_idle_stop (EV_P_ struct ev_idle *w)
1417{
1418 ev_clear_pending (EV_A_ (W)w);
1419 if (ev_is_active (w))
1420 return;
1421
1422 idles [((W)w)->active - 1] = idles [--idlecnt];
1423 ev_stop (EV_A_ (W)w);
1424}
1425
1426void
1427ev_prepare_start (EV_P_ struct ev_prepare *w)
1428{
1429 if (ev_is_active (w))
1430 return;
1431
1432 ev_start (EV_A_ (W)w, ++preparecnt);
1433 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1434 prepares [preparecnt - 1] = w;
1435}
1436
1437void
1438ev_prepare_stop (EV_P_ struct ev_prepare *w)
1439{
1440 ev_clear_pending (EV_A_ (W)w);
1441 if (ev_is_active (w))
1442 return;
1443
1444 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1445 ev_stop (EV_A_ (W)w);
1446}
1447
1448void
1449ev_check_start (EV_P_ struct ev_check *w)
1450{
1451 if (ev_is_active (w))
1452 return;
1453
1454 ev_start (EV_A_ (W)w, ++checkcnt);
1455 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1456 checks [checkcnt - 1] = w;
1457}
1458
1459void
1460ev_check_stop (EV_P_ struct ev_check *w)
1461{
1462 ev_clear_pending (EV_A_ (W)w);
1463 if (ev_is_active (w))
1464 return;
1465
1466 checks [((W)w)->active - 1] = checks [--checkcnt];
1467 ev_stop (EV_A_ (W)w);
1468}
1469 1736
1470#ifndef SA_RESTART 1737#ifndef SA_RESTART
1471# define SA_RESTART 0 1738# define SA_RESTART 0
1472#endif 1739#endif
1473 1740
1474void 1741void noinline
1475ev_signal_start (EV_P_ struct ev_signal *w) 1742ev_signal_start (EV_P_ ev_signal *w)
1476{ 1743{
1477#if EV_MULTIPLICITY 1744#if EV_MULTIPLICITY
1478 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1745 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1479#endif 1746#endif
1480 if (ev_is_active (w)) 1747 if (expect_false (ev_is_active (w)))
1481 return; 1748 return;
1482 1749
1483 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1750 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1484 1751
1485 ev_start (EV_A_ (W)w, 1); 1752 ev_start (EV_A_ (W)w, 1);
1486 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1753 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1487 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1754 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1488 1755
1489 if (!((WL)w)->next) 1756 if (!((WL)w)->next)
1490 { 1757 {
1491#if WIN32 1758#if _WIN32
1492 signal (w->signum, sighandler); 1759 signal (w->signum, sighandler);
1493#else 1760#else
1494 struct sigaction sa; 1761 struct sigaction sa;
1495 sa.sa_handler = sighandler; 1762 sa.sa_handler = sighandler;
1496 sigfillset (&sa.sa_mask); 1763 sigfillset (&sa.sa_mask);
… …
1498 sigaction (w->signum, &sa, 0); 1765 sigaction (w->signum, &sa, 0);
1499#endif 1766#endif
1500 } 1767 }
1501} 1768}
1502 1769
1503void 1770void noinline
1504ev_signal_stop (EV_P_ struct ev_signal *w) 1771ev_signal_stop (EV_P_ ev_signal *w)
1505{ 1772{
1506 ev_clear_pending (EV_A_ (W)w); 1773 clear_pending (EV_A_ (W)w);
1507 if (!ev_is_active (w)) 1774 if (expect_false (!ev_is_active (w)))
1508 return; 1775 return;
1509 1776
1510 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1777 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1511 ev_stop (EV_A_ (W)w); 1778 ev_stop (EV_A_ (W)w);
1512 1779
1513 if (!signals [w->signum - 1].head) 1780 if (!signals [w->signum - 1].head)
1514 signal (w->signum, SIG_DFL); 1781 signal (w->signum, SIG_DFL);
1515} 1782}
1516 1783
1517void 1784void
1518ev_child_start (EV_P_ struct ev_child *w) 1785ev_child_start (EV_P_ ev_child *w)
1519{ 1786{
1520#if EV_MULTIPLICITY 1787#if EV_MULTIPLICITY
1521 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1788 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522#endif 1789#endif
1523 if (ev_is_active (w)) 1790 if (expect_false (ev_is_active (w)))
1524 return; 1791 return;
1525 1792
1526 ev_start (EV_A_ (W)w, 1); 1793 ev_start (EV_A_ (W)w, 1);
1527 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1794 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1528} 1795}
1529 1796
1530void 1797void
1531ev_child_stop (EV_P_ struct ev_child *w) 1798ev_child_stop (EV_P_ ev_child *w)
1532{ 1799{
1533 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1534 if (ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
1535 return; 1802 return;
1536 1803
1537 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1804 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1538 ev_stop (EV_A_ (W)w); 1805 ev_stop (EV_A_ (W)w);
1539} 1806}
1540 1807
1808#if EV_STAT_ENABLE
1809
1810# ifdef _WIN32
1811# undef lstat
1812# define lstat(a,b) _stati64 (a,b)
1813# endif
1814
1815#define DEF_STAT_INTERVAL 5.0074891
1816#define MIN_STAT_INTERVAL 0.1074891
1817
1818static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1819
1820#if EV_USE_INOTIFY
1821# define EV_INOTIFY_BUFSIZE 8192
1822
1823static void noinline
1824infy_add (EV_P_ ev_stat *w)
1825{
1826 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);
1827
1828 if (w->wd < 0)
1829 {
1830 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1831
1832 /* monitor some parent directory for speedup hints */
1833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1834 {
1835 char path [4096];
1836 strcpy (path, w->path);
1837
1838 do
1839 {
1840 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1841 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1842
1843 char *pend = strrchr (path, '/');
1844
1845 if (!pend)
1846 break; /* whoops, no '/', complain to your admin */
1847
1848 *pend = 0;
1849 w->wd = inotify_add_watch (fs_fd, path, mask);
1850 }
1851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1852 }
1853 }
1854 else
1855 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1856
1857 if (w->wd >= 0)
1858 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1859}
1860
1861static void noinline
1862infy_del (EV_P_ ev_stat *w)
1863{
1864 int slot;
1865 int wd = w->wd;
1866
1867 if (wd < 0)
1868 return;
1869
1870 w->wd = -2;
1871 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1872 wlist_del (&fs_hash [slot].head, (WL)w);
1873
1874 /* remove this watcher, if others are watching it, they will rearm */
1875 inotify_rm_watch (fs_fd, wd);
1876}
1877
1878static void noinline
1879infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1880{
1881 if (slot < 0)
1882 /* overflow, need to check for all hahs slots */
1883 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1884 infy_wd (EV_A_ slot, wd, ev);
1885 else
1886 {
1887 WL w_;
1888
1889 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1890 {
1891 ev_stat *w = (ev_stat *)w_;
1892 w_ = w_->next; /* lets us remove this watcher and all before it */
1893
1894 if (w->wd == wd || wd == -1)
1895 {
1896 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1897 {
1898 w->wd = -1;
1899 infy_add (EV_A_ w); /* re-add, no matter what */
1900 }
1901
1902 stat_timer_cb (EV_A_ &w->timer, 0);
1903 }
1904 }
1905 }
1906}
1907
1908static void
1909infy_cb (EV_P_ ev_io *w, int revents)
1910{
1911 char buf [EV_INOTIFY_BUFSIZE];
1912 struct inotify_event *ev = (struct inotify_event *)buf;
1913 int ofs;
1914 int len = read (fs_fd, buf, sizeof (buf));
1915
1916 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1917 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1918}
1919
1920void inline_size
1921infy_init (EV_P)
1922{
1923 if (fs_fd != -2)
1924 return;
1925
1926 fs_fd = inotify_init ();
1927
1928 if (fs_fd >= 0)
1929 {
1930 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1931 ev_set_priority (&fs_w, EV_MAXPRI);
1932 ev_io_start (EV_A_ &fs_w);
1933 }
1934}
1935
1936void inline_size
1937infy_fork (EV_P)
1938{
1939 int slot;
1940
1941 if (fs_fd < 0)
1942 return;
1943
1944 close (fs_fd);
1945 fs_fd = inotify_init ();
1946
1947 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1948 {
1949 WL w_ = fs_hash [slot].head;
1950 fs_hash [slot].head = 0;
1951
1952 while (w_)
1953 {
1954 ev_stat *w = (ev_stat *)w_;
1955 w_ = w_->next; /* lets us add this watcher */
1956
1957 w->wd = -1;
1958
1959 if (fs_fd >= 0)
1960 infy_add (EV_A_ w); /* re-add, no matter what */
1961 else
1962 ev_timer_start (EV_A_ &w->timer);
1963 }
1964
1965 }
1966}
1967
1968#endif
1969
1970void
1971ev_stat_stat (EV_P_ ev_stat *w)
1972{
1973 if (lstat (w->path, &w->attr) < 0)
1974 w->attr.st_nlink = 0;
1975 else if (!w->attr.st_nlink)
1976 w->attr.st_nlink = 1;
1977}
1978
1979static void noinline
1980stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1981{
1982 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1983
1984 /* we copy this here each the time so that */
1985 /* prev has the old value when the callback gets invoked */
1986 w->prev = w->attr;
1987 ev_stat_stat (EV_A_ w);
1988
1989 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1990 if (
1991 w->prev.st_dev != w->attr.st_dev
1992 || w->prev.st_ino != w->attr.st_ino
1993 || w->prev.st_mode != w->attr.st_mode
1994 || w->prev.st_nlink != w->attr.st_nlink
1995 || w->prev.st_uid != w->attr.st_uid
1996 || w->prev.st_gid != w->attr.st_gid
1997 || w->prev.st_rdev != w->attr.st_rdev
1998 || w->prev.st_size != w->attr.st_size
1999 || w->prev.st_atime != w->attr.st_atime
2000 || w->prev.st_mtime != w->attr.st_mtime
2001 || w->prev.st_ctime != w->attr.st_ctime
2002 ) {
2003 #if EV_USE_INOTIFY
2004 infy_del (EV_A_ w);
2005 infy_add (EV_A_ w);
2006 ev_stat_stat (EV_A_ w); /* avoid race... */
2007 #endif
2008
2009 ev_feed_event (EV_A_ w, EV_STAT);
2010 }
2011}
2012
2013void
2014ev_stat_start (EV_P_ ev_stat *w)
2015{
2016 if (expect_false (ev_is_active (w)))
2017 return;
2018
2019 /* since we use memcmp, we need to clear any padding data etc. */
2020 memset (&w->prev, 0, sizeof (ev_statdata));
2021 memset (&w->attr, 0, sizeof (ev_statdata));
2022
2023 ev_stat_stat (EV_A_ w);
2024
2025 if (w->interval < MIN_STAT_INTERVAL)
2026 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2027
2028 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2029 ev_set_priority (&w->timer, ev_priority (w));
2030
2031#if EV_USE_INOTIFY
2032 infy_init (EV_A);
2033
2034 if (fs_fd >= 0)
2035 infy_add (EV_A_ w);
2036 else
2037#endif
2038 ev_timer_start (EV_A_ &w->timer);
2039
2040 ev_start (EV_A_ (W)w, 1);
2041}
2042
2043void
2044ev_stat_stop (EV_P_ ev_stat *w)
2045{
2046 clear_pending (EV_A_ (W)w);
2047 if (expect_false (!ev_is_active (w)))
2048 return;
2049
2050#if EV_USE_INOTIFY
2051 infy_del (EV_A_ w);
2052#endif
2053 ev_timer_stop (EV_A_ &w->timer);
2054
2055 ev_stop (EV_A_ (W)w);
2056}
2057#endif
2058
2059#if EV_IDLE_ENABLE
2060void
2061ev_idle_start (EV_P_ ev_idle *w)
2062{
2063 if (expect_false (ev_is_active (w)))
2064 return;
2065
2066 pri_adjust (EV_A_ (W)w);
2067
2068 {
2069 int active = ++idlecnt [ABSPRI (w)];
2070
2071 ++idleall;
2072 ev_start (EV_A_ (W)w, active);
2073
2074 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2075 idles [ABSPRI (w)][active - 1] = w;
2076 }
2077}
2078
2079void
2080ev_idle_stop (EV_P_ ev_idle *w)
2081{
2082 clear_pending (EV_A_ (W)w);
2083 if (expect_false (!ev_is_active (w)))
2084 return;
2085
2086 {
2087 int active = ((W)w)->active;
2088
2089 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2090 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2091
2092 ev_stop (EV_A_ (W)w);
2093 --idleall;
2094 }
2095}
2096#endif
2097
2098void
2099ev_prepare_start (EV_P_ ev_prepare *w)
2100{
2101 if (expect_false (ev_is_active (w)))
2102 return;
2103
2104 ev_start (EV_A_ (W)w, ++preparecnt);
2105 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2106 prepares [preparecnt - 1] = w;
2107}
2108
2109void
2110ev_prepare_stop (EV_P_ ev_prepare *w)
2111{
2112 clear_pending (EV_A_ (W)w);
2113 if (expect_false (!ev_is_active (w)))
2114 return;
2115
2116 {
2117 int active = ((W)w)->active;
2118 prepares [active - 1] = prepares [--preparecnt];
2119 ((W)prepares [active - 1])->active = active;
2120 }
2121
2122 ev_stop (EV_A_ (W)w);
2123}
2124
2125void
2126ev_check_start (EV_P_ ev_check *w)
2127{
2128 if (expect_false (ev_is_active (w)))
2129 return;
2130
2131 ev_start (EV_A_ (W)w, ++checkcnt);
2132 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2133 checks [checkcnt - 1] = w;
2134}
2135
2136void
2137ev_check_stop (EV_P_ ev_check *w)
2138{
2139 clear_pending (EV_A_ (W)w);
2140 if (expect_false (!ev_is_active (w)))
2141 return;
2142
2143 {
2144 int active = ((W)w)->active;
2145 checks [active - 1] = checks [--checkcnt];
2146 ((W)checks [active - 1])->active = active;
2147 }
2148
2149 ev_stop (EV_A_ (W)w);
2150}
2151
2152#if EV_EMBED_ENABLE
2153void noinline
2154ev_embed_sweep (EV_P_ ev_embed *w)
2155{
2156 ev_loop (w->loop, EVLOOP_NONBLOCK);
2157}
2158
2159static void
2160embed_cb (EV_P_ ev_io *io, int revents)
2161{
2162 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2163
2164 if (ev_cb (w))
2165 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2166 else
2167 ev_embed_sweep (loop, w);
2168}
2169
2170void
2171ev_embed_start (EV_P_ ev_embed *w)
2172{
2173 if (expect_false (ev_is_active (w)))
2174 return;
2175
2176 {
2177 struct ev_loop *loop = w->loop;
2178 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2179 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2180 }
2181
2182 ev_set_priority (&w->io, ev_priority (w));
2183 ev_io_start (EV_A_ &w->io);
2184
2185 ev_start (EV_A_ (W)w, 1);
2186}
2187
2188void
2189ev_embed_stop (EV_P_ ev_embed *w)
2190{
2191 clear_pending (EV_A_ (W)w);
2192 if (expect_false (!ev_is_active (w)))
2193 return;
2194
2195 ev_io_stop (EV_A_ &w->io);
2196
2197 ev_stop (EV_A_ (W)w);
2198}
2199#endif
2200
2201#if EV_FORK_ENABLE
2202void
2203ev_fork_start (EV_P_ ev_fork *w)
2204{
2205 if (expect_false (ev_is_active (w)))
2206 return;
2207
2208 ev_start (EV_A_ (W)w, ++forkcnt);
2209 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2210 forks [forkcnt - 1] = w;
2211}
2212
2213void
2214ev_fork_stop (EV_P_ ev_fork *w)
2215{
2216 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w)))
2218 return;
2219
2220 {
2221 int active = ((W)w)->active;
2222 forks [active - 1] = forks [--forkcnt];
2223 ((W)forks [active - 1])->active = active;
2224 }
2225
2226 ev_stop (EV_A_ (W)w);
2227}
2228#endif
2229
1541/*****************************************************************************/ 2230/*****************************************************************************/
1542 2231
1543struct ev_once 2232struct ev_once
1544{ 2233{
1545 struct ev_io io; 2234 ev_io io;
1546 struct ev_timer to; 2235 ev_timer to;
1547 void (*cb)(int revents, void *arg); 2236 void (*cb)(int revents, void *arg);
1548 void *arg; 2237 void *arg;
1549}; 2238};
1550 2239
1551static void 2240static void
… …
1560 2249
1561 cb (revents, arg); 2250 cb (revents, arg);
1562} 2251}
1563 2252
1564static void 2253static void
1565once_cb_io (EV_P_ struct ev_io *w, int revents) 2254once_cb_io (EV_P_ ev_io *w, int revents)
1566{ 2255{
1567 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2256 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1568} 2257}
1569 2258
1570static void 2259static void
1571once_cb_to (EV_P_ struct ev_timer *w, int revents) 2260once_cb_to (EV_P_ ev_timer *w, int revents)
1572{ 2261{
1573 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2262 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1574} 2263}
1575 2264
1576void 2265void
1577ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2266ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1578{ 2267{
1579 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2268 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1580 2269
1581 if (!once) 2270 if (expect_false (!once))
2271 {
1582 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2272 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1583 else 2273 return;
1584 { 2274 }
2275
1585 once->cb = cb; 2276 once->cb = cb;
1586 once->arg = arg; 2277 once->arg = arg;
1587 2278
1588 ev_init (&once->io, once_cb_io); 2279 ev_init (&once->io, once_cb_io);
1589 if (fd >= 0) 2280 if (fd >= 0)
1590 { 2281 {
1591 ev_io_set (&once->io, fd, events); 2282 ev_io_set (&once->io, fd, events);
1592 ev_io_start (EV_A_ &once->io); 2283 ev_io_start (EV_A_ &once->io);
1593 } 2284 }
1594 2285
1595 ev_init (&once->to, once_cb_to); 2286 ev_init (&once->to, once_cb_to);
1596 if (timeout >= 0.) 2287 if (timeout >= 0.)
1597 { 2288 {
1598 ev_timer_set (&once->to, timeout, 0.); 2289 ev_timer_set (&once->to, timeout, 0.);
1599 ev_timer_start (EV_A_ &once->to); 2290 ev_timer_start (EV_A_ &once->to);
1600 }
1601 } 2291 }
1602} 2292}
1603 2293
1604#ifdef __cplusplus 2294#ifdef __cplusplus
1605} 2295}

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