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Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.193 by root, Sat Dec 22 05:47:58 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
42
43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
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
57# endif
58
59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
65# endif
66
67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
73# endif
74
75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
81# endif
82
83# ifndef EV_USE_EPOLL
84# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
85# define EV_USE_EPOLL 1
86# else
87# define EV_USE_EPOLL 0
88# endif
89# endif
90
91# ifndef EV_USE_KQUEUE
92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
93# define EV_USE_KQUEUE 1
94# else
95# define EV_USE_KQUEUE 0
96# endif
97# endif
98
99# ifndef EV_USE_PORT
100# if HAVE_PORT_H && HAVE_PORT_CREATE
101# define EV_USE_PORT 1
102# else
103# define EV_USE_PORT 0
104# endif
105# endif
106
107# ifndef EV_USE_INOTIFY
108# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
109# define EV_USE_INOTIFY 1
110# else
111# define EV_USE_INOTIFY 0
112# endif
113# endif
114
33#endif 115#endif
34 116
35#include <math.h> 117#include <math.h>
36#include <stdlib.h> 118#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 119#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 120#include <stddef.h>
41 121
42#include <stdio.h> 122#include <stdio.h>
43 123
44#include <assert.h> 124#include <assert.h>
45#include <errno.h> 125#include <errno.h>
46#include <sys/types.h> 126#include <sys/types.h>
127#include <time.h>
128
129#include <signal.h>
130
131#ifdef EV_H
132# include EV_H
133#else
134# include "ev.h"
135#endif
136
47#ifndef WIN32 137#ifndef _WIN32
138# include <sys/time.h>
48# include <sys/wait.h> 139# include <sys/wait.h>
140# include <unistd.h>
141#else
142# define WIN32_LEAN_AND_MEAN
143# include <windows.h>
144# ifndef EV_SELECT_IS_WINSOCKET
145# define EV_SELECT_IS_WINSOCKET 1
49#endif 146# endif
50#include <sys/time.h> 147#endif
51#include <time.h>
52 148
53/**/ 149/**/
54 150
55#ifndef EV_USE_MONOTONIC 151#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 152# define EV_USE_MONOTONIC 0
153#endif
154
155#ifndef EV_USE_REALTIME
156# define EV_USE_REALTIME 0
157#endif
158
159#ifndef EV_USE_NANOSLEEP
160# define EV_USE_NANOSLEEP 0
57#endif 161#endif
58 162
59#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
61#endif 165#endif
62 166
63#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
64# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 168# ifdef _WIN32
169# define EV_USE_POLL 0
170# else
171# define EV_USE_POLL 1
172# endif
65#endif 173#endif
66 174
67#ifndef EV_USE_EPOLL 175#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 176# define EV_USE_EPOLL 0
69#endif 177#endif
70 178
71#ifndef EV_USE_KQUEUE 179#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 180# define EV_USE_KQUEUE 0
73#endif 181#endif
74 182
75#ifndef EV_USE_REALTIME 183#ifndef EV_USE_PORT
76# define EV_USE_REALTIME 1 184# define EV_USE_PORT 0
185#endif
186
187#ifndef EV_USE_INOTIFY
188# define EV_USE_INOTIFY 0
189#endif
190
191#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL
193# define EV_PID_HASHSIZE 1
194# else
195# define EV_PID_HASHSIZE 16
196# endif
197#endif
198
199#ifndef EV_INOTIFY_HASHSIZE
200# if EV_MINIMAL
201# define EV_INOTIFY_HASHSIZE 1
202# else
203# define EV_INOTIFY_HASHSIZE 16
204# endif
77#endif 205#endif
78 206
79/**/ 207/**/
80 208
81#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
… …
86#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
89#endif 217#endif
90 218
219#if !EV_STAT_ENABLE
220# undef EV_USE_INOTIFY
221# define EV_USE_INOTIFY 0
222#endif
223
224#if !EV_USE_NANOSLEEP
225# ifndef _WIN32
226# include <sys/select.h>
227# endif
228#endif
229
230#if EV_USE_INOTIFY
231# include <sys/inotify.h>
232#endif
233
234#if EV_SELECT_IS_WINSOCKET
235# include <winsock.h>
236#endif
237
91/**/ 238/**/
92 239
240/*
241 * This is used to avoid floating point rounding problems.
242 * It is added to ev_rt_now when scheduling periodics
243 * to ensure progress, time-wise, even when rounding
244 * errors are against us.
245 * This value is good at least till the year 4000.
246 * Better solutions welcome.
247 */
248#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
249
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97 253
98#include "ev.h"
99
100#if __GNUC__ >= 3 254#if __GNUC__ >= 4
101# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 256# define noinline __attribute__ ((noinline))
103#else 257#else
104# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
105# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
106#endif 263#endif
107 264
108#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
109#define expect_true(expr) expect ((expr) != 0, 1) 266#define expect_true(expr) expect ((expr) != 0, 1)
267#define inline_size static inline
268
269#if EV_MINIMAL
270# define inline_speed static noinline
271#else
272# define inline_speed static inline
273#endif
110 274
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113 277
278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
280
114typedef struct ev_watcher *W; 281typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
117 284
118static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 285static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119 286
287#ifdef _WIN32
288# include "ev_win32.c"
289#endif
290
120/*****************************************************************************/ 291/*****************************************************************************/
121 292
293static void (*syserr_cb)(const char *msg);
294
295void
296ev_set_syserr_cb (void (*cb)(const char *msg))
297{
298 syserr_cb = cb;
299}
300
301static void noinline
302syserr (const char *msg)
303{
304 if (!msg)
305 msg = "(libev) system error";
306
307 if (syserr_cb)
308 syserr_cb (msg);
309 else
310 {
311 perror (msg);
312 abort ();
313 }
314}
315
316static void *(*alloc)(void *ptr, long size);
317
318void
319ev_set_allocator (void *(*cb)(void *ptr, long size))
320{
321 alloc = cb;
322}
323
324inline_speed void *
325ev_realloc (void *ptr, long size)
326{
327 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
328
329 if (!ptr && size)
330 {
331 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
332 abort ();
333 }
334
335 return ptr;
336}
337
338#define ev_malloc(size) ev_realloc (0, (size))
339#define ev_free(ptr) ev_realloc ((ptr), 0)
340
341/*****************************************************************************/
342
122typedef struct 343typedef struct
123{ 344{
124 struct ev_watcher_list *head; 345 WL head;
125 unsigned char events; 346 unsigned char events;
126 unsigned char reify; 347 unsigned char reify;
348#if EV_SELECT_IS_WINSOCKET
349 SOCKET handle;
350#endif
127} ANFD; 351} ANFD;
128 352
129typedef struct 353typedef struct
130{ 354{
131 W w; 355 W w;
132 int events; 356 int events;
133} ANPENDING; 357} ANPENDING;
134 358
359#if EV_USE_INOTIFY
360typedef struct
361{
362 WL head;
363} ANFS;
364#endif
365
135#if EV_MULTIPLICITY 366#if EV_MULTIPLICITY
136 367
137struct ev_loop 368 struct ev_loop
138{ 369 {
370 ev_tstamp ev_rt_now;
371 #define ev_rt_now ((loop)->ev_rt_now)
139# define VAR(name,decl) decl; 372 #define VAR(name,decl) decl;
140# include "ev_vars.h" 373 #include "ev_vars.h"
141};
142# undef VAR 374 #undef VAR
375 };
143# include "ev_wrap.h" 376 #include "ev_wrap.h"
377
378 static struct ev_loop default_loop_struct;
379 struct ev_loop *ev_default_loop_ptr;
144 380
145#else 381#else
146 382
383 ev_tstamp ev_rt_now;
147# define VAR(name,decl) static decl; 384 #define VAR(name,decl) static decl;
148# include "ev_vars.h" 385 #include "ev_vars.h"
149# undef VAR 386 #undef VAR
387
388 static int ev_default_loop_ptr;
150 389
151#endif 390#endif
152 391
153/*****************************************************************************/ 392/*****************************************************************************/
154 393
155inline ev_tstamp 394ev_tstamp
156ev_time (void) 395ev_time (void)
157{ 396{
158#if EV_USE_REALTIME 397#if EV_USE_REALTIME
159 struct timespec ts; 398 struct timespec ts;
160 clock_gettime (CLOCK_REALTIME, &ts); 399 clock_gettime (CLOCK_REALTIME, &ts);
… …
164 gettimeofday (&tv, 0); 403 gettimeofday (&tv, 0);
165 return tv.tv_sec + tv.tv_usec * 1e-6; 404 return tv.tv_sec + tv.tv_usec * 1e-6;
166#endif 405#endif
167} 406}
168 407
169inline ev_tstamp 408ev_tstamp inline_size
170get_clock (void) 409get_clock (void)
171{ 410{
172#if EV_USE_MONOTONIC 411#if EV_USE_MONOTONIC
173 if (expect_true (have_monotonic)) 412 if (expect_true (have_monotonic))
174 { 413 {
… …
179#endif 418#endif
180 419
181 return ev_time (); 420 return ev_time ();
182} 421}
183 422
423#if EV_MULTIPLICITY
184ev_tstamp 424ev_tstamp
185ev_now (EV_P) 425ev_now (EV_P)
186{ 426{
187 return rt_now; 427 return ev_rt_now;
188} 428}
429#endif
189 430
190#define array_roundsize(base,n) ((n) | 4 & ~3) 431void
191 432ev_sleep (ev_tstamp delay)
192#define array_needsize(base,cur,cnt,init) \ 433{
193 if (expect_false ((cnt) > cur)) \ 434 if (delay > 0.)
194 { \
195 int newcnt = cur; \
196 do \
197 { \
198 newcnt = array_roundsize (base, newcnt << 1); \
199 } \
200 while ((cnt) > newcnt); \
201 \
202 base = realloc (base, sizeof (*base) * (newcnt)); \
203 init (base + cur, newcnt - cur); \
204 cur = newcnt; \
205 } 435 {
436#if EV_USE_NANOSLEEP
437 struct timespec ts;
438
439 ts.tv_sec = (time_t)delay;
440 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
441
442 nanosleep (&ts, 0);
443#elif defined(_WIN32)
444 Sleep (delay * 1e3);
445#else
446 struct timeval tv;
447
448 tv.tv_sec = (time_t)delay;
449 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
450
451 select (0, 0, 0, 0, &tv);
452#endif
453 }
454}
206 455
207/*****************************************************************************/ 456/*****************************************************************************/
208 457
209static void 458int inline_size
459array_nextsize (int elem, int cur, int cnt)
460{
461 int ncur = cur + 1;
462
463 do
464 ncur <<= 1;
465 while (cnt > ncur);
466
467 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
468 if (elem * ncur > 4096)
469 {
470 ncur *= elem;
471 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
472 ncur = ncur - sizeof (void *) * 4;
473 ncur /= elem;
474 }
475
476 return ncur;
477}
478
479static noinline void *
480array_realloc (int elem, void *base, int *cur, int cnt)
481{
482 *cur = array_nextsize (elem, *cur, cnt);
483 return ev_realloc (base, elem * *cur);
484}
485
486#define array_needsize(type,base,cur,cnt,init) \
487 if (expect_false ((cnt) > (cur))) \
488 { \
489 int ocur_ = (cur); \
490 (base) = (type *)array_realloc \
491 (sizeof (type), (base), &(cur), (cnt)); \
492 init ((base) + (ocur_), (cur) - ocur_); \
493 }
494
495#if 0
496#define array_slim(type,stem) \
497 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
498 { \
499 stem ## max = array_roundsize (stem ## cnt >> 1); \
500 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
501 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
502 }
503#endif
504
505#define array_free(stem, idx) \
506 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
507
508/*****************************************************************************/
509
510void noinline
511ev_feed_event (EV_P_ void *w, int revents)
512{
513 W w_ = (W)w;
514 int pri = ABSPRI (w_);
515
516 if (expect_false (w_->pending))
517 pendings [pri][w_->pending - 1].events |= revents;
518 else
519 {
520 w_->pending = ++pendingcnt [pri];
521 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
522 pendings [pri][w_->pending - 1].w = w_;
523 pendings [pri][w_->pending - 1].events = revents;
524 }
525}
526
527void inline_speed
528queue_events (EV_P_ W *events, int eventcnt, int type)
529{
530 int i;
531
532 for (i = 0; i < eventcnt; ++i)
533 ev_feed_event (EV_A_ events [i], type);
534}
535
536/*****************************************************************************/
537
538void inline_size
210anfds_init (ANFD *base, int count) 539anfds_init (ANFD *base, int count)
211{ 540{
212 while (count--) 541 while (count--)
213 { 542 {
214 base->head = 0; 543 base->head = 0;
… …
217 546
218 ++base; 547 ++base;
219 } 548 }
220} 549}
221 550
222static void 551void inline_speed
223event (EV_P_ W w, int events)
224{
225 if (w->pending)
226 {
227 pendings [ABSPRI (w)][w->pending - 1].events |= events;
228 return;
229 }
230
231 w->pending = ++pendingcnt [ABSPRI (w)];
232 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233 pendings [ABSPRI (w)][w->pending - 1].w = w;
234 pendings [ABSPRI (w)][w->pending - 1].events = events;
235}
236
237static void
238queue_events (EV_P_ W *events, int eventcnt, int type)
239{
240 int i;
241
242 for (i = 0; i < eventcnt; ++i)
243 event (EV_A_ events [i], type);
244}
245
246static void
247fd_event (EV_P_ int fd, int events) 552fd_event (EV_P_ int fd, int revents)
248{ 553{
249 ANFD *anfd = anfds + fd; 554 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 555 ev_io *w;
251 556
252 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 557 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253 { 558 {
254 int ev = w->events & events; 559 int ev = w->events & revents;
255 560
256 if (ev) 561 if (ev)
257 event (EV_A_ (W)w, ev); 562 ev_feed_event (EV_A_ (W)w, ev);
258 } 563 }
259} 564}
260 565
261/*****************************************************************************/ 566void
567ev_feed_fd_event (EV_P_ int fd, int revents)
568{
569 if (fd >= 0 && fd < anfdmax)
570 fd_event (EV_A_ fd, revents);
571}
262 572
263static void 573void inline_size
264fd_reify (EV_P) 574fd_reify (EV_P)
265{ 575{
266 int i; 576 int i;
267 577
268 for (i = 0; i < fdchangecnt; ++i) 578 for (i = 0; i < fdchangecnt; ++i)
269 { 579 {
270 int fd = fdchanges [i]; 580 int fd = fdchanges [i];
271 ANFD *anfd = anfds + fd; 581 ANFD *anfd = anfds + fd;
272 struct ev_io *w; 582 ev_io *w;
273 583
274 int events = 0; 584 unsigned char events = 0;
275 585
276 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 586 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277 events |= w->events; 587 events |= (unsigned char)w->events;
278 588
279 anfd->reify = 0; 589#if EV_SELECT_IS_WINSOCKET
280 590 if (events)
281 if (anfd->events != events)
282 { 591 {
283 method_modify (EV_A_ fd, anfd->events, events); 592 unsigned long argp;
284 anfd->events = events; 593 anfd->handle = _get_osfhandle (fd);
594 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
285 } 595 }
596#endif
597
598 {
599 unsigned char o_events = anfd->events;
600 unsigned char o_reify = anfd->reify;
601
602 anfd->reify = 0;
603 anfd->events = events;
604
605 if (o_events != events || o_reify & EV_IOFDSET)
606 backend_modify (EV_A_ fd, o_events, events);
607 }
286 } 608 }
287 609
288 fdchangecnt = 0; 610 fdchangecnt = 0;
289} 611}
290 612
291static void 613void inline_size
292fd_change (EV_P_ int fd) 614fd_change (EV_P_ int fd, int flags)
293{ 615{
294 if (anfds [fd].reify || fdchangecnt < 0) 616 unsigned char reify = anfds [fd].reify;
295 return;
296
297 anfds [fd].reify = 1; 617 anfds [fd].reify |= flags;
298 618
619 if (expect_true (!reify))
620 {
299 ++fdchangecnt; 621 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301 fdchanges [fdchangecnt - 1] = fd; 623 fdchanges [fdchangecnt - 1] = fd;
624 }
302} 625}
303 626
304static void 627void inline_speed
305fd_kill (EV_P_ int fd) 628fd_kill (EV_P_ int fd)
306{ 629{
307 struct ev_io *w; 630 ev_io *w;
308 631
309 while ((w = (struct ev_io *)anfds [fd].head)) 632 while ((w = (ev_io *)anfds [fd].head))
310 { 633 {
311 ev_io_stop (EV_A_ w); 634 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 635 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 636 }
637}
638
639int inline_size
640fd_valid (int fd)
641{
642#ifdef _WIN32
643 return _get_osfhandle (fd) != -1;
644#else
645 return fcntl (fd, F_GETFD) != -1;
646#endif
314} 647}
315 648
316/* called on EBADF to verify fds */ 649/* called on EBADF to verify fds */
317static void 650static void noinline
318fd_ebadf (EV_P) 651fd_ebadf (EV_P)
319{ 652{
320 int fd; 653 int fd;
321 654
322 for (fd = 0; fd < anfdmax; ++fd) 655 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 656 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 657 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 658 fd_kill (EV_A_ fd);
326} 659}
327 660
328/* called on ENOMEM in select/poll to kill some fds and retry */ 661/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 662static void noinline
330fd_enomem (EV_P) 663fd_enomem (EV_P)
331{ 664{
332 int fd = anfdmax; 665 int fd;
333 666
334 while (fd--) 667 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 668 if (anfds [fd].events)
336 { 669 {
337 close (fd);
338 fd_kill (EV_A_ fd); 670 fd_kill (EV_A_ fd);
339 return; 671 return;
340 } 672 }
341} 673}
342 674
343/* susually called after fork if method needs to re-arm all fds from scratch */ 675/* usually called after fork if backend needs to re-arm all fds from scratch */
344static void 676static void noinline
345fd_rearm_all (EV_P) 677fd_rearm_all (EV_P)
346{ 678{
347 int fd; 679 int fd;
348 680
349 /* this should be highly optimised to not do anything but set a flag */
350 for (fd = 0; fd < anfdmax; ++fd) 681 for (fd = 0; fd < anfdmax; ++fd)
351 if (anfds [fd].events) 682 if (anfds [fd].events)
352 { 683 {
353 anfds [fd].events = 0; 684 anfds [fd].events = 0;
354 fd_change (fd); 685 fd_change (EV_A_ fd, EV_IOFDSET | 1);
355 } 686 }
356} 687}
357 688
358/*****************************************************************************/ 689/*****************************************************************************/
359 690
360static void 691void inline_speed
361upheap (WT *heap, int k) 692upheap (WT *heap, int k)
362{ 693{
363 WT w = heap [k]; 694 WT w = heap [k];
364 695
365 while (k && heap [k >> 1]->at > w->at) 696 while (k)
366 { 697 {
698 int p = (k - 1) >> 1;
699
700 if (heap [p]->at <= w->at)
701 break;
702
367 heap [k] = heap [k >> 1]; 703 heap [k] = heap [p];
368 heap [k]->active = k + 1; 704 ((W)heap [k])->active = k + 1;
369 k >>= 1; 705 k = p;
370 } 706 }
371 707
372 heap [k] = w; 708 heap [k] = w;
373 heap [k]->active = k + 1; 709 ((W)heap [k])->active = k + 1;
374
375} 710}
376 711
377static void 712void inline_speed
378downheap (WT *heap, int N, int k) 713downheap (WT *heap, int N, int k)
379{ 714{
380 WT w = heap [k]; 715 WT w = heap [k];
381 716
382 while (k < (N >> 1)) 717 for (;;)
383 { 718 {
384 int j = k << 1; 719 int c = (k << 1) + 1;
385 720
386 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 721 if (c >= N)
387 ++j;
388
389 if (w->at <= heap [j]->at)
390 break; 722 break;
391 723
724 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
725 ? 1 : 0;
726
727 if (w->at <= heap [c]->at)
728 break;
729
392 heap [k] = heap [j]; 730 heap [k] = heap [c];
393 heap [k]->active = k + 1; 731 ((W)heap [k])->active = k + 1;
732
394 k = j; 733 k = c;
395 } 734 }
396 735
397 heap [k] = w; 736 heap [k] = w;
398 heap [k]->active = k + 1; 737 ((W)heap [k])->active = k + 1;
738}
739
740void inline_size
741adjustheap (WT *heap, int N, int k)
742{
743 upheap (heap, k);
744 downheap (heap, N, k);
399} 745}
400 746
401/*****************************************************************************/ 747/*****************************************************************************/
402 748
403typedef struct 749typedef struct
404{ 750{
405 struct ev_watcher_list *head; 751 WL head;
406 sig_atomic_t volatile gotsig; 752 sig_atomic_t volatile gotsig;
407} ANSIG; 753} ANSIG;
408 754
409static ANSIG *signals; 755static ANSIG *signals;
410static int signalmax; 756static int signalmax;
411 757
412static int sigpipe [2]; 758static int sigpipe [2];
413static sig_atomic_t volatile gotsig; 759static sig_atomic_t volatile gotsig;
414static struct ev_io sigev; 760static ev_io sigev;
415 761
416static void 762void inline_size
417signals_init (ANSIG *base, int count) 763signals_init (ANSIG *base, int count)
418{ 764{
419 while (count--) 765 while (count--)
420 { 766 {
421 base->head = 0; 767 base->head = 0;
… …
426} 772}
427 773
428static void 774static void
429sighandler (int signum) 775sighandler (int signum)
430{ 776{
777#if _WIN32
778 signal (signum, sighandler);
779#endif
780
431 signals [signum - 1].gotsig = 1; 781 signals [signum - 1].gotsig = 1;
432 782
433 if (!gotsig) 783 if (!gotsig)
434 { 784 {
435 int old_errno = errno; 785 int old_errno = errno;
… …
437 write (sigpipe [1], &signum, 1); 787 write (sigpipe [1], &signum, 1);
438 errno = old_errno; 788 errno = old_errno;
439 } 789 }
440} 790}
441 791
792void noinline
793ev_feed_signal_event (EV_P_ int signum)
794{
795 WL w;
796
797#if EV_MULTIPLICITY
798 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
799#endif
800
801 --signum;
802
803 if (signum < 0 || signum >= signalmax)
804 return;
805
806 signals [signum].gotsig = 0;
807
808 for (w = signals [signum].head; w; w = w->next)
809 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
810}
811
442static void 812static void
443sigcb (EV_P_ struct ev_io *iow, int revents) 813sigcb (EV_P_ ev_io *iow, int revents)
444{ 814{
445 struct ev_watcher_list *w;
446 int signum; 815 int signum;
447 816
448 read (sigpipe [0], &revents, 1); 817 read (sigpipe [0], &revents, 1);
449 gotsig = 0; 818 gotsig = 0;
450 819
451 for (signum = signalmax; signum--; ) 820 for (signum = signalmax; signum--; )
452 if (signals [signum].gotsig) 821 if (signals [signum].gotsig)
453 { 822 ev_feed_signal_event (EV_A_ signum + 1);
454 signals [signum].gotsig = 0;
455
456 for (w = signals [signum].head; w; w = w->next)
457 event (EV_A_ (W)w, EV_SIGNAL);
458 }
459} 823}
460 824
461static void 825void inline_speed
826fd_intern (int fd)
827{
828#ifdef _WIN32
829 int arg = 1;
830 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
831#else
832 fcntl (fd, F_SETFD, FD_CLOEXEC);
833 fcntl (fd, F_SETFL, O_NONBLOCK);
834#endif
835}
836
837static void noinline
462siginit (EV_P) 838siginit (EV_P)
463{ 839{
464#ifndef WIN32 840 fd_intern (sigpipe [0]);
465 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 841 fd_intern (sigpipe [1]);
466 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
467
468 /* rather than sort out wether we really need nb, set it */
469 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
470 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
471#endif
472 842
473 ev_io_set (&sigev, sigpipe [0], EV_READ); 843 ev_io_set (&sigev, sigpipe [0], EV_READ);
474 ev_io_start (EV_A_ &sigev); 844 ev_io_start (EV_A_ &sigev);
475 ev_unref (EV_A); /* child watcher should not keep loop alive */ 845 ev_unref (EV_A); /* child watcher should not keep loop alive */
476} 846}
477 847
478/*****************************************************************************/ 848/*****************************************************************************/
479 849
850static WL childs [EV_PID_HASHSIZE];
851
480#ifndef WIN32 852#ifndef _WIN32
481 853
482static struct ev_child *childs [PID_HASHSIZE];
483static struct ev_signal childev; 854static ev_signal childev;
855
856void inline_speed
857child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
858{
859 ev_child *w;
860
861 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
862 if (w->pid == pid || !w->pid)
863 {
864 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
865 w->rpid = pid;
866 w->rstatus = status;
867 ev_feed_event (EV_A_ (W)w, EV_CHILD);
868 }
869}
484 870
485#ifndef WCONTINUED 871#ifndef WCONTINUED
486# define WCONTINUED 0 872# define WCONTINUED 0
487#endif 873#endif
488 874
489static void 875static void
490child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
491{
492 struct ev_child *w;
493
494 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
495 if (w->pid == pid || !w->pid)
496 {
497 w->priority = sw->priority; /* need to do it *now* */
498 w->rpid = pid;
499 w->rstatus = status;
500 event (EV_A_ (W)w, EV_CHILD);
501 }
502}
503
504static void
505childcb (EV_P_ struct ev_signal *sw, int revents) 876childcb (EV_P_ ev_signal *sw, int revents)
506{ 877{
507 int pid, status; 878 int pid, status;
508 879
880 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
509 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 881 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
510 { 882 if (!WCONTINUED
883 || errno != EINVAL
884 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
885 return;
886
511 /* make sure we are called again until all childs have been reaped */ 887 /* make sure we are called again until all childs have been reaped */
888 /* we need to do it this way so that the callback gets called before we continue */
512 event (EV_A_ (W)sw, EV_SIGNAL); 889 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
513 890
514 child_reap (EV_A_ sw, pid, pid, status); 891 child_reap (EV_A_ sw, pid, pid, status);
892 if (EV_PID_HASHSIZE > 1)
515 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 893 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
516 }
517} 894}
518 895
519#endif 896#endif
520 897
521/*****************************************************************************/ 898/*****************************************************************************/
522 899
900#if EV_USE_PORT
901# include "ev_port.c"
902#endif
523#if EV_USE_KQUEUE 903#if EV_USE_KQUEUE
524# include "ev_kqueue.c" 904# include "ev_kqueue.c"
525#endif 905#endif
526#if EV_USE_EPOLL 906#if EV_USE_EPOLL
527# include "ev_epoll.c" 907# include "ev_epoll.c"
… …
544{ 924{
545 return EV_VERSION_MINOR; 925 return EV_VERSION_MINOR;
546} 926}
547 927
548/* return true if we are running with elevated privileges and should ignore env variables */ 928/* return true if we are running with elevated privileges and should ignore env variables */
549static int 929int inline_size
550enable_secure (void) 930enable_secure (void)
551{ 931{
552#ifdef WIN32 932#ifdef _WIN32
553 return 0; 933 return 0;
554#else 934#else
555 return getuid () != geteuid () 935 return getuid () != geteuid ()
556 || getgid () != getegid (); 936 || getgid () != getegid ();
557#endif 937#endif
558} 938}
559 939
560int 940unsigned int
561ev_method (EV_P) 941ev_supported_backends (void)
562{ 942{
563 return method; 943 unsigned int flags = 0;
564}
565 944
566static void 945 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
567loop_init (EV_P_ int methods) 946 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
947 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
948 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
949 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
950
951 return flags;
952}
953
954unsigned int
955ev_recommended_backends (void)
568{ 956{
569 if (!method) 957 unsigned int flags = ev_supported_backends ();
958
959#ifndef __NetBSD__
960 /* kqueue is borked on everything but netbsd apparently */
961 /* it usually doesn't work correctly on anything but sockets and pipes */
962 flags &= ~EVBACKEND_KQUEUE;
963#endif
964#ifdef __APPLE__
965 // flags &= ~EVBACKEND_KQUEUE; for documentation
966 flags &= ~EVBACKEND_POLL;
967#endif
968
969 return flags;
970}
971
972unsigned int
973ev_embeddable_backends (void)
974{
975 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
976 return EVBACKEND_KQUEUE
977 | EVBACKEND_PORT;
978}
979
980unsigned int
981ev_backend (EV_P)
982{
983 return backend;
984}
985
986unsigned int
987ev_loop_count (EV_P)
988{
989 return loop_count;
990}
991
992void
993ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
994{
995 io_blocktime = interval;
996}
997
998void
999ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1000{
1001 timeout_blocktime = interval;
1002}
1003
1004static void noinline
1005loop_init (EV_P_ unsigned int flags)
1006{
1007 if (!backend)
570 { 1008 {
571#if EV_USE_MONOTONIC 1009#if EV_USE_MONOTONIC
572 { 1010 {
573 struct timespec ts; 1011 struct timespec ts;
574 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1012 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
575 have_monotonic = 1; 1013 have_monotonic = 1;
576 } 1014 }
577#endif 1015#endif
578 1016
579 rt_now = ev_time (); 1017 ev_rt_now = ev_time ();
580 mn_now = get_clock (); 1018 mn_now = get_clock ();
581 now_floor = mn_now; 1019 now_floor = mn_now;
582 rtmn_diff = rt_now - mn_now; 1020 rtmn_diff = ev_rt_now - mn_now;
583 1021
584 if (methods == EVMETHOD_AUTO) 1022 io_blocktime = 0.;
585 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1023 timeout_blocktime = 0.;
1024
1025 /* pid check not overridable via env */
1026#ifndef _WIN32
1027 if (flags & EVFLAG_FORKCHECK)
1028 curpid = getpid ();
1029#endif
1030
1031 if (!(flags & EVFLAG_NOENV)
1032 && !enable_secure ()
1033 && getenv ("LIBEV_FLAGS"))
586 methods = atoi (getenv ("LIBEV_METHODS")); 1034 flags = atoi (getenv ("LIBEV_FLAGS"));
587 else
588 methods = EVMETHOD_ANY;
589 1035
590 method = 0; 1036 if (!(flags & 0x0000ffffUL))
1037 flags |= ev_recommended_backends ();
1038
1039 backend = 0;
1040 backend_fd = -1;
1041#if EV_USE_INOTIFY
1042 fs_fd = -2;
1043#endif
1044
1045#if EV_USE_PORT
1046 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1047#endif
591#if EV_USE_KQUEUE 1048#if EV_USE_KQUEUE
592 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1049 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
593#endif 1050#endif
594#if EV_USE_EPOLL 1051#if EV_USE_EPOLL
595 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1052 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
596#endif 1053#endif
597#if EV_USE_POLL 1054#if EV_USE_POLL
598 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1055 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
599#endif 1056#endif
600#if EV_USE_SELECT 1057#if EV_USE_SELECT
601 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1058 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
602#endif 1059#endif
603 }
604}
605 1060
606void 1061 ev_init (&sigev, sigcb);
1062 ev_set_priority (&sigev, EV_MAXPRI);
1063 }
1064}
1065
1066static void noinline
607loop_destroy (EV_P) 1067loop_destroy (EV_P)
608{ 1068{
1069 int i;
1070
1071#if EV_USE_INOTIFY
1072 if (fs_fd >= 0)
1073 close (fs_fd);
1074#endif
1075
1076 if (backend_fd >= 0)
1077 close (backend_fd);
1078
1079#if EV_USE_PORT
1080 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1081#endif
609#if EV_USE_KQUEUE 1082#if EV_USE_KQUEUE
610 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1083 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
611#endif 1084#endif
612#if EV_USE_EPOLL 1085#if EV_USE_EPOLL
613 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1086 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
614#endif 1087#endif
615#if EV_USE_POLL 1088#if EV_USE_POLL
616 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1089 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
617#endif 1090#endif
618#if EV_USE_SELECT 1091#if EV_USE_SELECT
619 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1092 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
620#endif 1093#endif
621 1094
622 method = 0; 1095 for (i = NUMPRI; i--; )
623 /*TODO*/ 1096 {
624} 1097 array_free (pending, [i]);
1098#if EV_IDLE_ENABLE
1099 array_free (idle, [i]);
1100#endif
1101 }
625 1102
626void 1103 ev_free (anfds); anfdmax = 0;
1104
1105 /* have to use the microsoft-never-gets-it-right macro */
1106 array_free (fdchange, EMPTY);
1107 array_free (timer, EMPTY);
1108#if EV_PERIODIC_ENABLE
1109 array_free (periodic, EMPTY);
1110#endif
1111#if EV_FORK_ENABLE
1112 array_free (fork, EMPTY);
1113#endif
1114 array_free (prepare, EMPTY);
1115 array_free (check, EMPTY);
1116
1117 backend = 0;
1118}
1119
1120void inline_size infy_fork (EV_P);
1121
1122void inline_size
627loop_fork (EV_P) 1123loop_fork (EV_P)
628{ 1124{
629 /*TODO*/ 1125#if EV_USE_PORT
1126 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1127#endif
1128#if EV_USE_KQUEUE
1129 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1130#endif
630#if EV_USE_EPOLL 1131#if EV_USE_EPOLL
631 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1132 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
632#endif 1133#endif
633#if EV_USE_KQUEUE 1134#if EV_USE_INOTIFY
634 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1135 infy_fork (EV_A);
635#endif 1136#endif
1137
1138 if (ev_is_active (&sigev))
1139 {
1140 /* default loop */
1141
1142 ev_ref (EV_A);
1143 ev_io_stop (EV_A_ &sigev);
1144 close (sigpipe [0]);
1145 close (sigpipe [1]);
1146
1147 while (pipe (sigpipe))
1148 syserr ("(libev) error creating pipe");
1149
1150 siginit (EV_A);
1151 }
1152
1153 postfork = 0;
636} 1154}
637 1155
638#if EV_MULTIPLICITY 1156#if EV_MULTIPLICITY
639struct ev_loop * 1157struct ev_loop *
640ev_loop_new (int methods) 1158ev_loop_new (unsigned int flags)
641{ 1159{
642 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1160 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
643 1161
1162 memset (loop, 0, sizeof (struct ev_loop));
1163
644 loop_init (EV_A_ methods); 1164 loop_init (EV_A_ flags);
645 1165
646 if (ev_methods (EV_A)) 1166 if (ev_backend (EV_A))
647 return loop; 1167 return loop;
648 1168
649 return 0; 1169 return 0;
650} 1170}
651 1171
652void 1172void
653ev_loop_destroy (EV_P) 1173ev_loop_destroy (EV_P)
654{ 1174{
655 loop_destroy (EV_A); 1175 loop_destroy (EV_A);
656 free (loop); 1176 ev_free (loop);
657} 1177}
658 1178
659void 1179void
660ev_loop_fork (EV_P) 1180ev_loop_fork (EV_P)
661{ 1181{
662 loop_fork (EV_A); 1182 postfork = 1;
663} 1183}
664 1184
665#endif 1185#endif
666 1186
667#if EV_MULTIPLICITY 1187#if EV_MULTIPLICITY
668struct ev_loop default_loop_struct;
669static struct ev_loop *default_loop;
670
671struct ev_loop * 1188struct ev_loop *
1189ev_default_loop_init (unsigned int flags)
672#else 1190#else
673static int default_loop;
674
675int 1191int
1192ev_default_loop (unsigned int flags)
676#endif 1193#endif
677ev_default_loop (int methods)
678{ 1194{
679 if (sigpipe [0] == sigpipe [1]) 1195 if (sigpipe [0] == sigpipe [1])
680 if (pipe (sigpipe)) 1196 if (pipe (sigpipe))
681 return 0; 1197 return 0;
682 1198
683 if (!default_loop) 1199 if (!ev_default_loop_ptr)
684 { 1200 {
685#if EV_MULTIPLICITY 1201#if EV_MULTIPLICITY
686 struct ev_loop *loop = default_loop = &default_loop_struct; 1202 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
687#else 1203#else
688 default_loop = 1; 1204 ev_default_loop_ptr = 1;
689#endif 1205#endif
690 1206
691 loop_init (EV_A_ methods); 1207 loop_init (EV_A_ flags);
692 1208
693 if (ev_method (EV_A)) 1209 if (ev_backend (EV_A))
694 { 1210 {
695 ev_watcher_init (&sigev, sigcb);
696 ev_set_priority (&sigev, EV_MAXPRI);
697 siginit (EV_A); 1211 siginit (EV_A);
698 1212
699#ifndef WIN32 1213#ifndef _WIN32
700 ev_signal_init (&childev, childcb, SIGCHLD); 1214 ev_signal_init (&childev, childcb, SIGCHLD);
701 ev_set_priority (&childev, EV_MAXPRI); 1215 ev_set_priority (&childev, EV_MAXPRI);
702 ev_signal_start (EV_A_ &childev); 1216 ev_signal_start (EV_A_ &childev);
703 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1217 ev_unref (EV_A); /* child watcher should not keep loop alive */
704#endif 1218#endif
705 } 1219 }
706 else 1220 else
707 default_loop = 0; 1221 ev_default_loop_ptr = 0;
708 } 1222 }
709 1223
710 return default_loop; 1224 return ev_default_loop_ptr;
711} 1225}
712 1226
713void 1227void
714ev_default_destroy (void) 1228ev_default_destroy (void)
715{ 1229{
716#if EV_MULTIPLICITY 1230#if EV_MULTIPLICITY
717 struct ev_loop *loop = default_loop; 1231 struct ev_loop *loop = ev_default_loop_ptr;
718#endif 1232#endif
719 1233
1234#ifndef _WIN32
720 ev_ref (EV_A); /* child watcher */ 1235 ev_ref (EV_A); /* child watcher */
721 ev_signal_stop (EV_A_ &childev); 1236 ev_signal_stop (EV_A_ &childev);
1237#endif
722 1238
723 ev_ref (EV_A); /* signal watcher */ 1239 ev_ref (EV_A); /* signal watcher */
724 ev_io_stop (EV_A_ &sigev); 1240 ev_io_stop (EV_A_ &sigev);
725 1241
726 close (sigpipe [0]); sigpipe [0] = 0; 1242 close (sigpipe [0]); sigpipe [0] = 0;
… …
728 1244
729 loop_destroy (EV_A); 1245 loop_destroy (EV_A);
730} 1246}
731 1247
732void 1248void
733ev_default_fork (EV_P) 1249ev_default_fork (void)
734{ 1250{
735 loop_fork (EV_A); 1251#if EV_MULTIPLICITY
1252 struct ev_loop *loop = ev_default_loop_ptr;
1253#endif
736 1254
737 ev_io_stop (EV_A_ &sigev); 1255 if (backend)
738 close (sigpipe [0]); 1256 postfork = 1;
739 close (sigpipe [1]);
740 pipe (sigpipe);
741
742 ev_ref (EV_A); /* signal watcher */
743 siginit (EV_A);
744} 1257}
745 1258
746/*****************************************************************************/ 1259/*****************************************************************************/
747 1260
748static void 1261void
1262ev_invoke (EV_P_ void *w, int revents)
1263{
1264 EV_CB_INVOKE ((W)w, revents);
1265}
1266
1267void inline_speed
749call_pending (EV_P) 1268call_pending (EV_P)
750{ 1269{
751 int pri; 1270 int pri;
752 1271
753 for (pri = NUMPRI; pri--; ) 1272 for (pri = NUMPRI; pri--; )
754 while (pendingcnt [pri]) 1273 while (pendingcnt [pri])
755 { 1274 {
756 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1275 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
757 1276
758 if (p->w) 1277 if (expect_true (p->w))
759 { 1278 {
1279 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1280
760 p->w->pending = 0; 1281 p->w->pending = 0;
761 p->w->cb (EV_A_ p->w, p->events); 1282 EV_CB_INVOKE (p->w, p->events);
762 } 1283 }
763 } 1284 }
764} 1285}
765 1286
766static void 1287void inline_size
767timers_reify (EV_P) 1288timers_reify (EV_P)
768{ 1289{
769 while (timercnt && timers [0]->at <= mn_now) 1290 while (timercnt && ((WT)timers [0])->at <= mn_now)
770 { 1291 {
771 struct ev_timer *w = timers [0]; 1292 ev_timer *w = (ev_timer *)timers [0];
1293
1294 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
772 1295
773 /* first reschedule or stop timer */ 1296 /* first reschedule or stop timer */
774 if (w->repeat) 1297 if (w->repeat)
775 { 1298 {
776 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1299 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1300
777 w->at = mn_now + w->repeat; 1301 ((WT)w)->at += w->repeat;
1302 if (((WT)w)->at < mn_now)
1303 ((WT)w)->at = mn_now;
1304
778 downheap ((WT *)timers, timercnt, 0); 1305 downheap (timers, timercnt, 0);
779 } 1306 }
780 else 1307 else
781 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1308 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
782 1309
783 event (EV_A_ (W)w, EV_TIMEOUT); 1310 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
784 } 1311 }
785} 1312}
786 1313
787static void 1314#if EV_PERIODIC_ENABLE
1315void inline_size
788periodics_reify (EV_P) 1316periodics_reify (EV_P)
789{ 1317{
790 while (periodiccnt && periodics [0]->at <= rt_now) 1318 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
791 { 1319 {
792 struct ev_periodic *w = periodics [0]; 1320 ev_periodic *w = (ev_periodic *)periodics [0];
1321
1322 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
793 1323
794 /* first reschedule or stop timer */ 1324 /* first reschedule or stop timer */
795 if (w->interval) 1325 if (w->reschedule_cb)
796 { 1326 {
1327 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1328 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1329 downheap (periodics, periodiccnt, 0);
1330 }
1331 else if (w->interval)
1332 {
797 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1333 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1334 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
798 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1335 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
799 downheap ((WT *)periodics, periodiccnt, 0); 1336 downheap (periodics, periodiccnt, 0);
800 } 1337 }
801 else 1338 else
802 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1339 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
803 1340
804 event (EV_A_ (W)w, EV_PERIODIC); 1341 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
805 } 1342 }
806} 1343}
807 1344
808static void 1345static void noinline
809periodics_reschedule (EV_P) 1346periodics_reschedule (EV_P)
810{ 1347{
811 int i; 1348 int i;
812 1349
813 /* adjust periodics after time jump */ 1350 /* adjust periodics after time jump */
814 for (i = 0; i < periodiccnt; ++i) 1351 for (i = 0; i < periodiccnt; ++i)
815 { 1352 {
816 struct ev_periodic *w = periodics [i]; 1353 ev_periodic *w = (ev_periodic *)periodics [i];
817 1354
1355 if (w->reschedule_cb)
1356 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
818 if (w->interval) 1357 else if (w->interval)
1358 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1359 }
1360
1361 /* now rebuild the heap */
1362 for (i = periodiccnt >> 1; i--; )
1363 downheap (periodics, periodiccnt, i);
1364}
1365#endif
1366
1367#if EV_IDLE_ENABLE
1368void inline_size
1369idle_reify (EV_P)
1370{
1371 if (expect_false (idleall))
1372 {
1373 int pri;
1374
1375 for (pri = NUMPRI; pri--; )
819 { 1376 {
820 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1377 if (pendingcnt [pri])
1378 break;
821 1379
822 if (fabs (diff) >= 1e-4) 1380 if (idlecnt [pri])
823 { 1381 {
824 ev_periodic_stop (EV_A_ w); 1382 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
825 ev_periodic_start (EV_A_ w); 1383 break;
826
827 i = 0; /* restart loop, inefficient, but time jumps should be rare */
828 } 1384 }
829 } 1385 }
830 } 1386 }
831} 1387}
1388#endif
832 1389
833inline int 1390void inline_speed
834time_update_monotonic (EV_P) 1391time_update (EV_P_ ev_tstamp max_block)
835{
836 mn_now = get_clock ();
837
838 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
839 {
840 rt_now = rtmn_diff + mn_now;
841 return 0;
842 }
843 else
844 {
845 now_floor = mn_now;
846 rt_now = ev_time ();
847 return 1;
848 }
849}
850
851static void
852time_update (EV_P)
853{ 1392{
854 int i; 1393 int i;
855 1394
856#if EV_USE_MONOTONIC 1395#if EV_USE_MONOTONIC
857 if (expect_true (have_monotonic)) 1396 if (expect_true (have_monotonic))
858 { 1397 {
859 if (time_update_monotonic (EV_A)) 1398 ev_tstamp odiff = rtmn_diff;
1399
1400 mn_now = get_clock ();
1401
1402 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1403 /* interpolate in the meantime */
1404 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
860 { 1405 {
861 ev_tstamp odiff = rtmn_diff; 1406 ev_rt_now = rtmn_diff + mn_now;
1407 return;
1408 }
862 1409
1410 now_floor = mn_now;
1411 ev_rt_now = ev_time ();
1412
863 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1413 /* loop a few times, before making important decisions.
1414 * on the choice of "4": one iteration isn't enough,
1415 * in case we get preempted during the calls to
1416 * ev_time and get_clock. a second call is almost guaranteed
1417 * to succeed in that case, though. and looping a few more times
1418 * doesn't hurt either as we only do this on time-jumps or
1419 * in the unlikely event of having been preempted here.
1420 */
1421 for (i = 4; --i; )
864 { 1422 {
865 rtmn_diff = rt_now - mn_now; 1423 rtmn_diff = ev_rt_now - mn_now;
866 1424
867 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1425 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
868 return; /* all is well */ 1426 return; /* all is well */
869 1427
870 rt_now = ev_time (); 1428 ev_rt_now = ev_time ();
871 mn_now = get_clock (); 1429 mn_now = get_clock ();
872 now_floor = mn_now; 1430 now_floor = mn_now;
873 } 1431 }
874 1432
1433# if EV_PERIODIC_ENABLE
1434 periodics_reschedule (EV_A);
1435# endif
1436 /* no timer adjustment, as the monotonic clock doesn't jump */
1437 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1438 }
1439 else
1440#endif
1441 {
1442 ev_rt_now = ev_time ();
1443
1444 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1445 {
1446#if EV_PERIODIC_ENABLE
875 periodics_reschedule (EV_A); 1447 periodics_reschedule (EV_A);
876 /* no timer adjustment, as the monotonic clock doesn't jump */ 1448#endif
877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1449 /* adjust timers. this is easy, as the offset is the same for all of them */
1450 for (i = 0; i < timercnt; ++i)
1451 ((WT)timers [i])->at += ev_rt_now - mn_now;
878 } 1452 }
879 }
880 else
881#endif
882 {
883 rt_now = ev_time ();
884 1453
885 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
886 {
887 periodics_reschedule (EV_A);
888
889 /* adjust timers. this is easy, as the offset is the same for all */
890 for (i = 0; i < timercnt; ++i)
891 timers [i]->at += rt_now - mn_now;
892 }
893
894 mn_now = rt_now; 1454 mn_now = ev_rt_now;
895 } 1455 }
896} 1456}
897 1457
898void 1458void
899ev_ref (EV_P) 1459ev_ref (EV_P)
… …
910static int loop_done; 1470static int loop_done;
911 1471
912void 1472void
913ev_loop (EV_P_ int flags) 1473ev_loop (EV_P_ int flags)
914{ 1474{
915 double block;
916 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1475 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1476 ? EVUNLOOP_ONE
1477 : EVUNLOOP_CANCEL;
1478
1479 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
917 1480
918 do 1481 do
919 { 1482 {
1483#ifndef _WIN32
1484 if (expect_false (curpid)) /* penalise the forking check even more */
1485 if (expect_false (getpid () != curpid))
1486 {
1487 curpid = getpid ();
1488 postfork = 1;
1489 }
1490#endif
1491
1492#if EV_FORK_ENABLE
1493 /* we might have forked, so queue fork handlers */
1494 if (expect_false (postfork))
1495 if (forkcnt)
1496 {
1497 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1498 call_pending (EV_A);
1499 }
1500#endif
1501
920 /* queue check watchers (and execute them) */ 1502 /* queue prepare watchers (and execute them) */
921 if (expect_false (preparecnt)) 1503 if (expect_false (preparecnt))
922 { 1504 {
923 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1505 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
924 call_pending (EV_A); 1506 call_pending (EV_A);
925 } 1507 }
926 1508
1509 if (expect_false (!activecnt))
1510 break;
1511
1512 /* we might have forked, so reify kernel state if necessary */
1513 if (expect_false (postfork))
1514 loop_fork (EV_A);
1515
927 /* update fd-related kernel structures */ 1516 /* update fd-related kernel structures */
928 fd_reify (EV_A); 1517 fd_reify (EV_A);
929 1518
930 /* calculate blocking time */ 1519 /* calculate blocking time */
1520 {
1521 ev_tstamp waittime = 0.;
1522 ev_tstamp sleeptime = 0.;
931 1523
932 /* we only need this for !monotonic clockor timers, but as we basically 1524 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
933 always have timers, we just calculate it always */
934#if EV_USE_MONOTONIC
935 if (expect_true (have_monotonic))
936 time_update_monotonic (EV_A);
937 else
938#endif
939 { 1525 {
940 rt_now = ev_time (); 1526 /* update time to cancel out callback processing overhead */
941 mn_now = rt_now; 1527 time_update (EV_A_ 1e100);
942 }
943 1528
944 if (flags & EVLOOP_NONBLOCK || idlecnt)
945 block = 0.;
946 else
947 {
948 block = MAX_BLOCKTIME; 1529 waittime = MAX_BLOCKTIME;
949 1530
950 if (timercnt) 1531 if (timercnt)
951 { 1532 {
952 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1533 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
953 if (block > to) block = to; 1534 if (waittime > to) waittime = to;
954 } 1535 }
955 1536
1537#if EV_PERIODIC_ENABLE
956 if (periodiccnt) 1538 if (periodiccnt)
957 { 1539 {
958 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1540 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
959 if (block > to) block = to; 1541 if (waittime > to) waittime = to;
960 } 1542 }
1543#endif
961 1544
962 if (block < 0.) block = 0.; 1545 if (expect_false (waittime < timeout_blocktime))
1546 waittime = timeout_blocktime;
1547
1548 sleeptime = waittime - backend_fudge;
1549
1550 if (expect_true (sleeptime > io_blocktime))
1551 sleeptime = io_blocktime;
1552
1553 if (sleeptime)
1554 {
1555 ev_sleep (sleeptime);
1556 waittime -= sleeptime;
1557 }
963 } 1558 }
964 1559
965 method_poll (EV_A_ block); 1560 ++loop_count;
1561 backend_poll (EV_A_ waittime);
966 1562
967 /* update rt_now, do magic */ 1563 /* update ev_rt_now, do magic */
968 time_update (EV_A); 1564 time_update (EV_A_ waittime + sleeptime);
1565 }
969 1566
970 /* queue pending timers and reschedule them */ 1567 /* queue pending timers and reschedule them */
971 timers_reify (EV_A); /* relative timers called last */ 1568 timers_reify (EV_A); /* relative timers called last */
1569#if EV_PERIODIC_ENABLE
972 periodics_reify (EV_A); /* absolute timers called first */ 1570 periodics_reify (EV_A); /* absolute timers called first */
1571#endif
973 1572
1573#if EV_IDLE_ENABLE
974 /* queue idle watchers unless io or timers are pending */ 1574 /* queue idle watchers unless other events are pending */
975 if (!pendingcnt) 1575 idle_reify (EV_A);
976 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1576#endif
977 1577
978 /* queue check watchers, to be executed first */ 1578 /* queue check watchers, to be executed first */
979 if (checkcnt) 1579 if (expect_false (checkcnt))
980 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1580 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
981 1581
982 call_pending (EV_A); 1582 call_pending (EV_A);
1583
983 } 1584 }
984 while (activecnt && !loop_done); 1585 while (expect_true (activecnt && !loop_done));
985 1586
986 if (loop_done != 2) 1587 if (loop_done == EVUNLOOP_ONE)
987 loop_done = 0; 1588 loop_done = EVUNLOOP_CANCEL;
988} 1589}
989 1590
990void 1591void
991ev_unloop (EV_P_ int how) 1592ev_unloop (EV_P_ int how)
992{ 1593{
993 loop_done = how; 1594 loop_done = how;
994} 1595}
995 1596
996/*****************************************************************************/ 1597/*****************************************************************************/
997 1598
998inline void 1599void inline_size
999wlist_add (WL *head, WL elem) 1600wlist_add (WL *head, WL elem)
1000{ 1601{
1001 elem->next = *head; 1602 elem->next = *head;
1002 *head = elem; 1603 *head = elem;
1003} 1604}
1004 1605
1005inline void 1606void inline_size
1006wlist_del (WL *head, WL elem) 1607wlist_del (WL *head, WL elem)
1007{ 1608{
1008 while (*head) 1609 while (*head)
1009 { 1610 {
1010 if (*head == elem) 1611 if (*head == elem)
… …
1015 1616
1016 head = &(*head)->next; 1617 head = &(*head)->next;
1017 } 1618 }
1018} 1619}
1019 1620
1020inline void 1621void inline_speed
1021ev_clear_pending (EV_P_ W w) 1622clear_pending (EV_P_ W w)
1022{ 1623{
1023 if (w->pending) 1624 if (w->pending)
1024 { 1625 {
1025 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1626 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1026 w->pending = 0; 1627 w->pending = 0;
1027 } 1628 }
1028} 1629}
1029 1630
1030inline void 1631int
1632ev_clear_pending (EV_P_ void *w)
1633{
1634 W w_ = (W)w;
1635 int pending = w_->pending;
1636
1637 if (expect_true (pending))
1638 {
1639 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1640 w_->pending = 0;
1641 p->w = 0;
1642 return p->events;
1643 }
1644 else
1645 return 0;
1646}
1647
1648void inline_size
1649pri_adjust (EV_P_ W w)
1650{
1651 int pri = w->priority;
1652 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1653 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1654 w->priority = pri;
1655}
1656
1657void inline_speed
1031ev_start (EV_P_ W w, int active) 1658ev_start (EV_P_ W w, int active)
1032{ 1659{
1033 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1660 pri_adjust (EV_A_ w);
1034 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1035
1036 w->active = active; 1661 w->active = active;
1037 ev_ref (EV_A); 1662 ev_ref (EV_A);
1038} 1663}
1039 1664
1040inline void 1665void inline_size
1041ev_stop (EV_P_ W w) 1666ev_stop (EV_P_ W w)
1042{ 1667{
1043 ev_unref (EV_A); 1668 ev_unref (EV_A);
1044 w->active = 0; 1669 w->active = 0;
1045} 1670}
1046 1671
1047/*****************************************************************************/ 1672/*****************************************************************************/
1048 1673
1049void 1674void noinline
1050ev_io_start (EV_P_ struct ev_io *w) 1675ev_io_start (EV_P_ ev_io *w)
1051{ 1676{
1052 int fd = w->fd; 1677 int fd = w->fd;
1053 1678
1054 if (ev_is_active (w)) 1679 if (expect_false (ev_is_active (w)))
1055 return; 1680 return;
1056 1681
1057 assert (("ev_io_start called with negative fd", fd >= 0)); 1682 assert (("ev_io_start called with negative fd", fd >= 0));
1058 1683
1059 ev_start (EV_A_ (W)w, 1); 1684 ev_start (EV_A_ (W)w, 1);
1060 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1685 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1061 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1686 wlist_add (&anfds[fd].head, (WL)w);
1062 1687
1063 fd_change (EV_A_ fd); 1688 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1689 w->events &= ~EV_IOFDSET;
1064} 1690}
1065 1691
1066void 1692void noinline
1067ev_io_stop (EV_P_ struct ev_io *w) 1693ev_io_stop (EV_P_ ev_io *w)
1068{ 1694{
1069 ev_clear_pending (EV_A_ (W)w); 1695 clear_pending (EV_A_ (W)w);
1070 if (!ev_is_active (w)) 1696 if (expect_false (!ev_is_active (w)))
1071 return; 1697 return;
1072 1698
1699 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1700
1073 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1701 wlist_del (&anfds[w->fd].head, (WL)w);
1074 ev_stop (EV_A_ (W)w); 1702 ev_stop (EV_A_ (W)w);
1075 1703
1076 fd_change (EV_A_ w->fd); 1704 fd_change (EV_A_ w->fd, 1);
1077} 1705}
1078 1706
1079void 1707void noinline
1080ev_timer_start (EV_P_ struct ev_timer *w) 1708ev_timer_start (EV_P_ ev_timer *w)
1081{ 1709{
1082 if (ev_is_active (w)) 1710 if (expect_false (ev_is_active (w)))
1083 return; 1711 return;
1084 1712
1085 w->at += mn_now; 1713 ((WT)w)->at += mn_now;
1086 1714
1087 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1715 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1088 1716
1089 ev_start (EV_A_ (W)w, ++timercnt); 1717 ev_start (EV_A_ (W)w, ++timercnt);
1090 array_needsize (timers, timermax, timercnt, ); 1718 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1091 timers [timercnt - 1] = w; 1719 timers [timercnt - 1] = (WT)w;
1092 upheap ((WT *)timers, timercnt - 1); 1720 upheap (timers, timercnt - 1);
1093}
1094 1721
1095void 1722 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1723}
1724
1725void noinline
1096ev_timer_stop (EV_P_ struct ev_timer *w) 1726ev_timer_stop (EV_P_ ev_timer *w)
1097{ 1727{
1098 ev_clear_pending (EV_A_ (W)w); 1728 clear_pending (EV_A_ (W)w);
1099 if (!ev_is_active (w)) 1729 if (expect_false (!ev_is_active (w)))
1100 return; 1730 return;
1101 1731
1102 if (w->active < timercnt--) 1732 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1733
1734 {
1735 int active = ((W)w)->active;
1736
1737 if (expect_true (--active < --timercnt))
1103 { 1738 {
1104 timers [w->active - 1] = timers [timercnt]; 1739 timers [active] = timers [timercnt];
1105 downheap ((WT *)timers, timercnt, w->active - 1); 1740 adjustheap (timers, timercnt, active);
1106 } 1741 }
1742 }
1107 1743
1108 w->at = w->repeat; 1744 ((WT)w)->at -= mn_now;
1109 1745
1110 ev_stop (EV_A_ (W)w); 1746 ev_stop (EV_A_ (W)w);
1111} 1747}
1112 1748
1113void 1749void noinline
1114ev_timer_again (EV_P_ struct ev_timer *w) 1750ev_timer_again (EV_P_ ev_timer *w)
1115{ 1751{
1116 if (ev_is_active (w)) 1752 if (ev_is_active (w))
1117 { 1753 {
1118 if (w->repeat) 1754 if (w->repeat)
1119 { 1755 {
1120 w->at = mn_now + w->repeat; 1756 ((WT)w)->at = mn_now + w->repeat;
1121 downheap ((WT *)timers, timercnt, w->active - 1); 1757 adjustheap (timers, timercnt, ((W)w)->active - 1);
1122 } 1758 }
1123 else 1759 else
1124 ev_timer_stop (EV_A_ w); 1760 ev_timer_stop (EV_A_ w);
1125 } 1761 }
1126 else if (w->repeat) 1762 else if (w->repeat)
1763 {
1764 w->at = w->repeat;
1127 ev_timer_start (EV_A_ w); 1765 ev_timer_start (EV_A_ w);
1766 }
1128} 1767}
1129 1768
1130void 1769#if EV_PERIODIC_ENABLE
1770void noinline
1131ev_periodic_start (EV_P_ struct ev_periodic *w) 1771ev_periodic_start (EV_P_ ev_periodic *w)
1132{ 1772{
1133 if (ev_is_active (w)) 1773 if (expect_false (ev_is_active (w)))
1134 return; 1774 return;
1135 1775
1776 if (w->reschedule_cb)
1777 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1778 else if (w->interval)
1779 {
1136 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1780 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1137
1138 /* this formula differs from the one in periodic_reify because we do not always round up */ 1781 /* this formula differs from the one in periodic_reify because we do not always round up */
1139 if (w->interval)
1140 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1782 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1783 }
1784 else
1785 ((WT)w)->at = w->offset;
1141 1786
1142 ev_start (EV_A_ (W)w, ++periodiccnt); 1787 ev_start (EV_A_ (W)w, ++periodiccnt);
1143 array_needsize (periodics, periodicmax, periodiccnt, ); 1788 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1144 periodics [periodiccnt - 1] = w; 1789 periodics [periodiccnt - 1] = (WT)w;
1145 upheap ((WT *)periodics, periodiccnt - 1); 1790 upheap (periodics, periodiccnt - 1);
1146}
1147 1791
1148void 1792 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1793}
1794
1795void noinline
1149ev_periodic_stop (EV_P_ struct ev_periodic *w) 1796ev_periodic_stop (EV_P_ ev_periodic *w)
1150{ 1797{
1151 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1152 if (!ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1153 return; 1800 return;
1154 1801
1155 if (w->active < periodiccnt--) 1802 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1803
1804 {
1805 int active = ((W)w)->active;
1806
1807 if (expect_true (--active < --periodiccnt))
1156 { 1808 {
1157 periodics [w->active - 1] = periodics [periodiccnt]; 1809 periodics [active] = periodics [periodiccnt];
1158 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1810 adjustheap (periodics, periodiccnt, active);
1159 } 1811 }
1812 }
1160 1813
1161 ev_stop (EV_A_ (W)w); 1814 ev_stop (EV_A_ (W)w);
1162} 1815}
1163 1816
1164void 1817void noinline
1165ev_idle_start (EV_P_ struct ev_idle *w) 1818ev_periodic_again (EV_P_ ev_periodic *w)
1166{ 1819{
1167 if (ev_is_active (w)) 1820 /* TODO: use adjustheap and recalculation */
1168 return;
1169
1170 ev_start (EV_A_ (W)w, ++idlecnt);
1171 array_needsize (idles, idlemax, idlecnt, );
1172 idles [idlecnt - 1] = w;
1173}
1174
1175void
1176ev_idle_stop (EV_P_ struct ev_idle *w)
1177{
1178 ev_clear_pending (EV_A_ (W)w);
1179 if (ev_is_active (w))
1180 return;
1181
1182 idles [w->active - 1] = idles [--idlecnt];
1183 ev_stop (EV_A_ (W)w); 1821 ev_periodic_stop (EV_A_ w);
1822 ev_periodic_start (EV_A_ w);
1184} 1823}
1185 1824#endif
1186void
1187ev_prepare_start (EV_P_ struct ev_prepare *w)
1188{
1189 if (ev_is_active (w))
1190 return;
1191
1192 ev_start (EV_A_ (W)w, ++preparecnt);
1193 array_needsize (prepares, preparemax, preparecnt, );
1194 prepares [preparecnt - 1] = w;
1195}
1196
1197void
1198ev_prepare_stop (EV_P_ struct ev_prepare *w)
1199{
1200 ev_clear_pending (EV_A_ (W)w);
1201 if (ev_is_active (w))
1202 return;
1203
1204 prepares [w->active - 1] = prepares [--preparecnt];
1205 ev_stop (EV_A_ (W)w);
1206}
1207
1208void
1209ev_check_start (EV_P_ struct ev_check *w)
1210{
1211 if (ev_is_active (w))
1212 return;
1213
1214 ev_start (EV_A_ (W)w, ++checkcnt);
1215 array_needsize (checks, checkmax, checkcnt, );
1216 checks [checkcnt - 1] = w;
1217}
1218
1219void
1220ev_check_stop (EV_P_ struct ev_check *w)
1221{
1222 ev_clear_pending (EV_A_ (W)w);
1223 if (ev_is_active (w))
1224 return;
1225
1226 checks [w->active - 1] = checks [--checkcnt];
1227 ev_stop (EV_A_ (W)w);
1228}
1229 1825
1230#ifndef SA_RESTART 1826#ifndef SA_RESTART
1231# define SA_RESTART 0 1827# define SA_RESTART 0
1232#endif 1828#endif
1233 1829
1234void 1830void noinline
1235ev_signal_start (EV_P_ struct ev_signal *w) 1831ev_signal_start (EV_P_ ev_signal *w)
1236{ 1832{
1237#if EV_MULTIPLICITY 1833#if EV_MULTIPLICITY
1238 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1834 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1239#endif 1835#endif
1240 if (ev_is_active (w)) 1836 if (expect_false (ev_is_active (w)))
1241 return; 1837 return;
1242 1838
1243 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1839 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1244 1840
1841 {
1842#ifndef _WIN32
1843 sigset_t full, prev;
1844 sigfillset (&full);
1845 sigprocmask (SIG_SETMASK, &full, &prev);
1846#endif
1847
1848 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1849
1850#ifndef _WIN32
1851 sigprocmask (SIG_SETMASK, &prev, 0);
1852#endif
1853 }
1854
1245 ev_start (EV_A_ (W)w, 1); 1855 ev_start (EV_A_ (W)w, 1);
1246 array_needsize (signals, signalmax, w->signum, signals_init);
1247 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1856 wlist_add (&signals [w->signum - 1].head, (WL)w);
1248 1857
1249 if (!w->next) 1858 if (!((WL)w)->next)
1250 { 1859 {
1860#if _WIN32
1861 signal (w->signum, sighandler);
1862#else
1251 struct sigaction sa; 1863 struct sigaction sa;
1252 sa.sa_handler = sighandler; 1864 sa.sa_handler = sighandler;
1253 sigfillset (&sa.sa_mask); 1865 sigfillset (&sa.sa_mask);
1254 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1866 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1255 sigaction (w->signum, &sa, 0); 1867 sigaction (w->signum, &sa, 0);
1868#endif
1256 } 1869 }
1257} 1870}
1258 1871
1259void 1872void noinline
1260ev_signal_stop (EV_P_ struct ev_signal *w) 1873ev_signal_stop (EV_P_ ev_signal *w)
1261{ 1874{
1262 ev_clear_pending (EV_A_ (W)w); 1875 clear_pending (EV_A_ (W)w);
1263 if (!ev_is_active (w)) 1876 if (expect_false (!ev_is_active (w)))
1264 return; 1877 return;
1265 1878
1266 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1879 wlist_del (&signals [w->signum - 1].head, (WL)w);
1267 ev_stop (EV_A_ (W)w); 1880 ev_stop (EV_A_ (W)w);
1268 1881
1269 if (!signals [w->signum - 1].head) 1882 if (!signals [w->signum - 1].head)
1270 signal (w->signum, SIG_DFL); 1883 signal (w->signum, SIG_DFL);
1271} 1884}
1272 1885
1273void 1886void
1274ev_child_start (EV_P_ struct ev_child *w) 1887ev_child_start (EV_P_ ev_child *w)
1275{ 1888{
1276#if EV_MULTIPLICITY 1889#if EV_MULTIPLICITY
1277 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1890 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1278#endif 1891#endif
1279 if (ev_is_active (w)) 1892 if (expect_false (ev_is_active (w)))
1280 return; 1893 return;
1281 1894
1282 ev_start (EV_A_ (W)w, 1); 1895 ev_start (EV_A_ (W)w, 1);
1283 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1896 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1284} 1897}
1285 1898
1286void 1899void
1287ev_child_stop (EV_P_ struct ev_child *w) 1900ev_child_stop (EV_P_ ev_child *w)
1288{ 1901{
1289 ev_clear_pending (EV_A_ (W)w); 1902 clear_pending (EV_A_ (W)w);
1290 if (ev_is_active (w)) 1903 if (expect_false (!ev_is_active (w)))
1291 return; 1904 return;
1292 1905
1293 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1906 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1294 ev_stop (EV_A_ (W)w); 1907 ev_stop (EV_A_ (W)w);
1295} 1908}
1296 1909
1910#if EV_STAT_ENABLE
1911
1912# ifdef _WIN32
1913# undef lstat
1914# define lstat(a,b) _stati64 (a,b)
1915# endif
1916
1917#define DEF_STAT_INTERVAL 5.0074891
1918#define MIN_STAT_INTERVAL 0.1074891
1919
1920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1921
1922#if EV_USE_INOTIFY
1923# define EV_INOTIFY_BUFSIZE 8192
1924
1925static void noinline
1926infy_add (EV_P_ ev_stat *w)
1927{
1928 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);
1929
1930 if (w->wd < 0)
1931 {
1932 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1933
1934 /* monitor some parent directory for speedup hints */
1935 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1936 {
1937 char path [4096];
1938 strcpy (path, w->path);
1939
1940 do
1941 {
1942 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1943 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1944
1945 char *pend = strrchr (path, '/');
1946
1947 if (!pend)
1948 break; /* whoops, no '/', complain to your admin */
1949
1950 *pend = 0;
1951 w->wd = inotify_add_watch (fs_fd, path, mask);
1952 }
1953 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1954 }
1955 }
1956 else
1957 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1958
1959 if (w->wd >= 0)
1960 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1961}
1962
1963static void noinline
1964infy_del (EV_P_ ev_stat *w)
1965{
1966 int slot;
1967 int wd = w->wd;
1968
1969 if (wd < 0)
1970 return;
1971
1972 w->wd = -2;
1973 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1974 wlist_del (&fs_hash [slot].head, (WL)w);
1975
1976 /* remove this watcher, if others are watching it, they will rearm */
1977 inotify_rm_watch (fs_fd, wd);
1978}
1979
1980static void noinline
1981infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1982{
1983 if (slot < 0)
1984 /* overflow, need to check for all hahs slots */
1985 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1986 infy_wd (EV_A_ slot, wd, ev);
1987 else
1988 {
1989 WL w_;
1990
1991 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1992 {
1993 ev_stat *w = (ev_stat *)w_;
1994 w_ = w_->next; /* lets us remove this watcher and all before it */
1995
1996 if (w->wd == wd || wd == -1)
1997 {
1998 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1999 {
2000 w->wd = -1;
2001 infy_add (EV_A_ w); /* re-add, no matter what */
2002 }
2003
2004 stat_timer_cb (EV_A_ &w->timer, 0);
2005 }
2006 }
2007 }
2008}
2009
2010static void
2011infy_cb (EV_P_ ev_io *w, int revents)
2012{
2013 char buf [EV_INOTIFY_BUFSIZE];
2014 struct inotify_event *ev = (struct inotify_event *)buf;
2015 int ofs;
2016 int len = read (fs_fd, buf, sizeof (buf));
2017
2018 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2019 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2020}
2021
2022void inline_size
2023infy_init (EV_P)
2024{
2025 if (fs_fd != -2)
2026 return;
2027
2028 fs_fd = inotify_init ();
2029
2030 if (fs_fd >= 0)
2031 {
2032 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2033 ev_set_priority (&fs_w, EV_MAXPRI);
2034 ev_io_start (EV_A_ &fs_w);
2035 }
2036}
2037
2038void inline_size
2039infy_fork (EV_P)
2040{
2041 int slot;
2042
2043 if (fs_fd < 0)
2044 return;
2045
2046 close (fs_fd);
2047 fs_fd = inotify_init ();
2048
2049 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2050 {
2051 WL w_ = fs_hash [slot].head;
2052 fs_hash [slot].head = 0;
2053
2054 while (w_)
2055 {
2056 ev_stat *w = (ev_stat *)w_;
2057 w_ = w_->next; /* lets us add this watcher */
2058
2059 w->wd = -1;
2060
2061 if (fs_fd >= 0)
2062 infy_add (EV_A_ w); /* re-add, no matter what */
2063 else
2064 ev_timer_start (EV_A_ &w->timer);
2065 }
2066
2067 }
2068}
2069
2070#endif
2071
2072void
2073ev_stat_stat (EV_P_ ev_stat *w)
2074{
2075 if (lstat (w->path, &w->attr) < 0)
2076 w->attr.st_nlink = 0;
2077 else if (!w->attr.st_nlink)
2078 w->attr.st_nlink = 1;
2079}
2080
2081static void noinline
2082stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2083{
2084 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2085
2086 /* we copy this here each the time so that */
2087 /* prev has the old value when the callback gets invoked */
2088 w->prev = w->attr;
2089 ev_stat_stat (EV_A_ w);
2090
2091 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2092 if (
2093 w->prev.st_dev != w->attr.st_dev
2094 || w->prev.st_ino != w->attr.st_ino
2095 || w->prev.st_mode != w->attr.st_mode
2096 || w->prev.st_nlink != w->attr.st_nlink
2097 || w->prev.st_uid != w->attr.st_uid
2098 || w->prev.st_gid != w->attr.st_gid
2099 || w->prev.st_rdev != w->attr.st_rdev
2100 || w->prev.st_size != w->attr.st_size
2101 || w->prev.st_atime != w->attr.st_atime
2102 || w->prev.st_mtime != w->attr.st_mtime
2103 || w->prev.st_ctime != w->attr.st_ctime
2104 ) {
2105 #if EV_USE_INOTIFY
2106 infy_del (EV_A_ w);
2107 infy_add (EV_A_ w);
2108 ev_stat_stat (EV_A_ w); /* avoid race... */
2109 #endif
2110
2111 ev_feed_event (EV_A_ w, EV_STAT);
2112 }
2113}
2114
2115void
2116ev_stat_start (EV_P_ ev_stat *w)
2117{
2118 if (expect_false (ev_is_active (w)))
2119 return;
2120
2121 /* since we use memcmp, we need to clear any padding data etc. */
2122 memset (&w->prev, 0, sizeof (ev_statdata));
2123 memset (&w->attr, 0, sizeof (ev_statdata));
2124
2125 ev_stat_stat (EV_A_ w);
2126
2127 if (w->interval < MIN_STAT_INTERVAL)
2128 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2129
2130 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2131 ev_set_priority (&w->timer, ev_priority (w));
2132
2133#if EV_USE_INOTIFY
2134 infy_init (EV_A);
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w);
2138 else
2139#endif
2140 ev_timer_start (EV_A_ &w->timer);
2141
2142 ev_start (EV_A_ (W)w, 1);
2143}
2144
2145void
2146ev_stat_stop (EV_P_ ev_stat *w)
2147{
2148 clear_pending (EV_A_ (W)w);
2149 if (expect_false (!ev_is_active (w)))
2150 return;
2151
2152#if EV_USE_INOTIFY
2153 infy_del (EV_A_ w);
2154#endif
2155 ev_timer_stop (EV_A_ &w->timer);
2156
2157 ev_stop (EV_A_ (W)w);
2158}
2159#endif
2160
2161#if EV_IDLE_ENABLE
2162void
2163ev_idle_start (EV_P_ ev_idle *w)
2164{
2165 if (expect_false (ev_is_active (w)))
2166 return;
2167
2168 pri_adjust (EV_A_ (W)w);
2169
2170 {
2171 int active = ++idlecnt [ABSPRI (w)];
2172
2173 ++idleall;
2174 ev_start (EV_A_ (W)w, active);
2175
2176 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2177 idles [ABSPRI (w)][active - 1] = w;
2178 }
2179}
2180
2181void
2182ev_idle_stop (EV_P_ ev_idle *w)
2183{
2184 clear_pending (EV_A_ (W)w);
2185 if (expect_false (!ev_is_active (w)))
2186 return;
2187
2188 {
2189 int active = ((W)w)->active;
2190
2191 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2192 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2193
2194 ev_stop (EV_A_ (W)w);
2195 --idleall;
2196 }
2197}
2198#endif
2199
2200void
2201ev_prepare_start (EV_P_ ev_prepare *w)
2202{
2203 if (expect_false (ev_is_active (w)))
2204 return;
2205
2206 ev_start (EV_A_ (W)w, ++preparecnt);
2207 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2208 prepares [preparecnt - 1] = w;
2209}
2210
2211void
2212ev_prepare_stop (EV_P_ ev_prepare *w)
2213{
2214 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w)))
2216 return;
2217
2218 {
2219 int active = ((W)w)->active;
2220 prepares [active - 1] = prepares [--preparecnt];
2221 ((W)prepares [active - 1])->active = active;
2222 }
2223
2224 ev_stop (EV_A_ (W)w);
2225}
2226
2227void
2228ev_check_start (EV_P_ ev_check *w)
2229{
2230 if (expect_false (ev_is_active (w)))
2231 return;
2232
2233 ev_start (EV_A_ (W)w, ++checkcnt);
2234 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2235 checks [checkcnt - 1] = w;
2236}
2237
2238void
2239ev_check_stop (EV_P_ ev_check *w)
2240{
2241 clear_pending (EV_A_ (W)w);
2242 if (expect_false (!ev_is_active (w)))
2243 return;
2244
2245 {
2246 int active = ((W)w)->active;
2247 checks [active - 1] = checks [--checkcnt];
2248 ((W)checks [active - 1])->active = active;
2249 }
2250
2251 ev_stop (EV_A_ (W)w);
2252}
2253
2254#if EV_EMBED_ENABLE
2255void noinline
2256ev_embed_sweep (EV_P_ ev_embed *w)
2257{
2258 ev_loop (w->other, EVLOOP_NONBLOCK);
2259}
2260
2261static void
2262embed_io_cb (EV_P_ ev_io *io, int revents)
2263{
2264 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2265
2266 if (ev_cb (w))
2267 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2268 else
2269 ev_embed_sweep (loop, w);
2270}
2271
2272static void
2273embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2274{
2275 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2276
2277 fd_reify (w->other);
2278}
2279
2280void
2281ev_embed_start (EV_P_ ev_embed *w)
2282{
2283 if (expect_false (ev_is_active (w)))
2284 return;
2285
2286 {
2287 struct ev_loop *loop = w->other;
2288 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2289 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2290 }
2291
2292 ev_set_priority (&w->io, ev_priority (w));
2293 ev_io_start (EV_A_ &w->io);
2294
2295 ev_prepare_init (&w->prepare, embed_prepare_cb);
2296 ev_set_priority (&w->prepare, EV_MINPRI);
2297 ev_prepare_start (EV_A_ &w->prepare);
2298
2299 ev_start (EV_A_ (W)w, 1);
2300}
2301
2302void
2303ev_embed_stop (EV_P_ ev_embed *w)
2304{
2305 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w)))
2307 return;
2308
2309 ev_io_stop (EV_A_ &w->io);
2310 ev_prepare_stop (EV_A_ &w->prepare);
2311
2312 ev_stop (EV_A_ (W)w);
2313}
2314#endif
2315
2316#if EV_FORK_ENABLE
2317void
2318ev_fork_start (EV_P_ ev_fork *w)
2319{
2320 if (expect_false (ev_is_active (w)))
2321 return;
2322
2323 ev_start (EV_A_ (W)w, ++forkcnt);
2324 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2325 forks [forkcnt - 1] = w;
2326}
2327
2328void
2329ev_fork_stop (EV_P_ ev_fork *w)
2330{
2331 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w)))
2333 return;
2334
2335 {
2336 int active = ((W)w)->active;
2337 forks [active - 1] = forks [--forkcnt];
2338 ((W)forks [active - 1])->active = active;
2339 }
2340
2341 ev_stop (EV_A_ (W)w);
2342}
2343#endif
2344
1297/*****************************************************************************/ 2345/*****************************************************************************/
1298 2346
1299struct ev_once 2347struct ev_once
1300{ 2348{
1301 struct ev_io io; 2349 ev_io io;
1302 struct ev_timer to; 2350 ev_timer to;
1303 void (*cb)(int revents, void *arg); 2351 void (*cb)(int revents, void *arg);
1304 void *arg; 2352 void *arg;
1305}; 2353};
1306 2354
1307static void 2355static void
… …
1310 void (*cb)(int revents, void *arg) = once->cb; 2358 void (*cb)(int revents, void *arg) = once->cb;
1311 void *arg = once->arg; 2359 void *arg = once->arg;
1312 2360
1313 ev_io_stop (EV_A_ &once->io); 2361 ev_io_stop (EV_A_ &once->io);
1314 ev_timer_stop (EV_A_ &once->to); 2362 ev_timer_stop (EV_A_ &once->to);
1315 free (once); 2363 ev_free (once);
1316 2364
1317 cb (revents, arg); 2365 cb (revents, arg);
1318} 2366}
1319 2367
1320static void 2368static void
1321once_cb_io (EV_P_ struct ev_io *w, int revents) 2369once_cb_io (EV_P_ ev_io *w, int revents)
1322{ 2370{
1323 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2371 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1324} 2372}
1325 2373
1326static void 2374static void
1327once_cb_to (EV_P_ struct ev_timer *w, int revents) 2375once_cb_to (EV_P_ ev_timer *w, int revents)
1328{ 2376{
1329 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2377 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1330} 2378}
1331 2379
1332void 2380void
1333ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2381ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1334{ 2382{
1335 struct ev_once *once = malloc (sizeof (struct ev_once)); 2383 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1336 2384
1337 if (!once) 2385 if (expect_false (!once))
2386 {
1338 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2387 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1339 else 2388 return;
1340 { 2389 }
2390
1341 once->cb = cb; 2391 once->cb = cb;
1342 once->arg = arg; 2392 once->arg = arg;
1343 2393
1344 ev_watcher_init (&once->io, once_cb_io); 2394 ev_init (&once->io, once_cb_io);
1345 if (fd >= 0) 2395 if (fd >= 0)
1346 { 2396 {
1347 ev_io_set (&once->io, fd, events); 2397 ev_io_set (&once->io, fd, events);
1348 ev_io_start (EV_A_ &once->io); 2398 ev_io_start (EV_A_ &once->io);
1349 } 2399 }
1350 2400
1351 ev_watcher_init (&once->to, once_cb_to); 2401 ev_init (&once->to, once_cb_to);
1352 if (timeout >= 0.) 2402 if (timeout >= 0.)
1353 { 2403 {
1354 ev_timer_set (&once->to, timeout, 0.); 2404 ev_timer_set (&once->to, timeout, 0.);
1355 ev_timer_start (EV_A_ &once->to); 2405 ev_timer_start (EV_A_ &once->to);
1356 }
1357 } 2406 }
1358} 2407}
1359 2408
2409#if EV_MULTIPLICITY
2410 #include "ev_wrap.h"
2411#endif
2412
2413#ifdef __cplusplus
2414}
2415#endif
2416

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