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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.102 by root, Sun Nov 11 17:56:11 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
32# include "config.h" 37# include "config.h"
38
39# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1
42# endif
43# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1
45# endif
46# endif
47
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
49# define EV_USE_SELECT 1
50# endif
51
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
53# define EV_USE_POLL 1
54# endif
55
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
57# define EV_USE_EPOLL 1
58# endif
59
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
61# define EV_USE_KQUEUE 1
62# endif
63
33#endif 64#endif
34 65
35#include <math.h> 66#include <math.h>
36#include <stdlib.h> 67#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 68#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 69#include <stddef.h>
41 70
42#include <stdio.h> 71#include <stdio.h>
43 72
44#include <assert.h> 73#include <assert.h>
45#include <errno.h> 74#include <errno.h>
46#include <sys/types.h> 75#include <sys/types.h>
76#include <time.h>
77
78#include <signal.h>
79
47#ifndef WIN32 80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
48# include <sys/wait.h> 83# include <sys/wait.h>
49#endif 84#endif
50#include <sys/time.h>
51#include <time.h>
52
53/**/ 85/**/
54 86
55#ifndef EV_USE_MONOTONIC 87#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 88# define EV_USE_MONOTONIC 1
57#endif 89#endif
58 90
59#ifndef EV_USE_SELECT 91#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 92# define EV_USE_SELECT 1
61#endif 93#endif
62 94
63#ifndef EV_USEV_POLL 95#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65#endif 97#endif
66 98
67#ifndef EV_USE_EPOLL 99#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 100# define EV_USE_EPOLL 0
69#endif 101#endif
70 102
71#ifndef EV_USE_KQUEUE 103#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
73#endif 115#endif
74 116
75#ifndef EV_USE_REALTIME 117#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 118# define EV_USE_REALTIME 1
77#endif 119#endif
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 135#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) */ 136#define MAX_BLOCKTIME 59.731 /* 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 */ 137#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 */ 138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
97 139
140#ifdef EV_H
141# include EV_H
142#else
98#include "ev.h" 143# include "ev.h"
144#endif
99 145
100#if __GNUC__ >= 3 146#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value)) 147# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 148# define inline inline
103#else 149#else
113 159
114typedef struct ev_watcher *W; 160typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 161typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 162typedef struct ev_watcher_time *WT;
117 163
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 165
122static int have_monotonic; /* runtime */ 166#ifdef WIN32
123 167# include "ev_win32.c"
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132static int vec_max;
133#endif
134
135#if EV_USEV_POLL
136static struct pollfd *polls;
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif
141
142#if EV_USE_EPOLL
143static int epoll_fd = -1;
144
145static struct epoll_event *events;
146static int eventmax;
147#endif
148
149#if EV_USE_KQUEUE
150static int kqueue_fd;
151static struct kevent *kqueue_changes;
152static int kqueue_changemax, kqueue_changecnt;
153static struct kevent *kqueue_events;
154static int kqueue_eventmax;
155#endif 168#endif
156 169
157/*****************************************************************************/ 170/*****************************************************************************/
158 171
159inline ev_tstamp 172static void (*syserr_cb)(const char *msg);
173
174void ev_set_syserr_cb (void (*cb)(const char *msg))
175{
176 syserr_cb = cb;
177}
178
179static void
180syserr (const char *msg)
181{
182 if (!msg)
183 msg = "(libev) system error";
184
185 if (syserr_cb)
186 syserr_cb (msg);
187 else
188 {
189 perror (msg);
190 abort ();
191 }
192}
193
194static void *(*alloc)(void *ptr, long size);
195
196void ev_set_allocator (void *(*cb)(void *ptr, long size))
197{
198 alloc = cb;
199}
200
201static void *
202ev_realloc (void *ptr, long size)
203{
204 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205
206 if (!ptr && size)
207 {
208 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
209 abort ();
210 }
211
212 return ptr;
213}
214
215#define ev_malloc(size) ev_realloc (0, (size))
216#define ev_free(ptr) ev_realloc ((ptr), 0)
217
218/*****************************************************************************/
219
220typedef struct
221{
222 WL head;
223 unsigned char events;
224 unsigned char reify;
225} ANFD;
226
227typedef struct
228{
229 W w;
230 int events;
231} ANPENDING;
232
233#if EV_MULTIPLICITY
234
235 struct ev_loop
236 {
237 ev_tstamp ev_rt_now;
238 #define ev_rt_now ((loop)->ev_rt_now)
239 #define VAR(name,decl) decl;
240 #include "ev_vars.h"
241 #undef VAR
242 };
243 #include "ev_wrap.h"
244
245 struct ev_loop default_loop_struct;
246 static struct ev_loop *default_loop;
247
248#else
249
250 ev_tstamp ev_rt_now;
251 #define VAR(name,decl) static decl;
252 #include "ev_vars.h"
253 #undef VAR
254
255 static int default_loop;
256
257#endif
258
259/*****************************************************************************/
260
261ev_tstamp
160ev_time (void) 262ev_time (void)
161{ 263{
162#if EV_USE_REALTIME 264#if EV_USE_REALTIME
163 struct timespec ts; 265 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 266 clock_gettime (CLOCK_REALTIME, &ts);
183#endif 285#endif
184 286
185 return ev_time (); 287 return ev_time ();
186} 288}
187 289
290#if EV_MULTIPLICITY
188ev_tstamp 291ev_tstamp
189ev_now (EV_P) 292ev_now (EV_P)
190{ 293{
191 return rt_now; 294 return ev_rt_now;
192} 295}
296#endif
193 297
194#define array_roundsize(base,n) ((n) | 4 & ~3) 298#define array_roundsize(type,n) ((n) | 4 & ~3)
195 299
196#define array_needsize(base,cur,cnt,init) \ 300#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 301 if (expect_false ((cnt) > cur)) \
198 { \ 302 { \
199 int newcnt = cur; \ 303 int newcnt = cur; \
200 do \ 304 do \
201 { \ 305 { \
202 newcnt = array_roundsize (base, newcnt << 1); \ 306 newcnt = array_roundsize (type, newcnt << 1); \
203 } \ 307 } \
204 while ((cnt) > newcnt); \ 308 while ((cnt) > newcnt); \
205 \ 309 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 310 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207 init (base + cur, newcnt - cur); \ 311 init (base + cur, newcnt - cur); \
208 cur = newcnt; \ 312 cur = newcnt; \
209 } 313 }
314
315#define array_slim(type,stem) \
316 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
317 { \
318 stem ## max = array_roundsize (stem ## cnt >> 1); \
319 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321 }
322
323/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
324/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
325#define array_free_microshit(stem) \
326 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
327
328#define array_free(stem, idx) \
329 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210 330
211/*****************************************************************************/ 331/*****************************************************************************/
212
213typedef struct
214{
215 struct ev_watcher_list *head;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219
220static ANFD *anfds;
221static int anfdmax;
222 332
223static void 333static void
224anfds_init (ANFD *base, int count) 334anfds_init (ANFD *base, int count)
225{ 335{
226 while (count--) 336 while (count--)
231 341
232 ++base; 342 ++base;
233 } 343 }
234} 344}
235 345
236typedef struct 346void
237{
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245static void
246event (EV_P_ W w, int events) 347ev_feed_event (EV_P_ void *w, int revents)
247{ 348{
349 W w_ = (W)w;
350
248 if (w->pending) 351 if (w_->pending)
249 { 352 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events; 353 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251 return; 354 return;
252 } 355 }
253 356
254 w->pending = ++pendingcnt [ABSPRI (w)]; 357 w_->pending = ++pendingcnt [ABSPRI (w_)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 358 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
256 pendings [ABSPRI (w)][w->pending - 1].w = w; 359 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257 pendings [ABSPRI (w)][w->pending - 1].events = events; 360 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258} 361}
259 362
260static void 363static void
261queue_events (EV_P_ W *events, int eventcnt, int type) 364queue_events (EV_P_ W *events, int eventcnt, int type)
262{ 365{
263 int i; 366 int i;
264 367
265 for (i = 0; i < eventcnt; ++i) 368 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type); 369 ev_feed_event (EV_A_ events [i], type);
267} 370}
268 371
269static void 372inline void
270fd_event (EV_P_ int fd, int events) 373fd_event (EV_P_ int fd, int revents)
271{ 374{
272 ANFD *anfd = anfds + fd; 375 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 376 struct ev_io *w;
274 377
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 378 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
276 { 379 {
277 int ev = w->events & events; 380 int ev = w->events & revents;
278 381
279 if (ev) 382 if (ev)
280 event (EV_A_ (W)w, ev); 383 ev_feed_event (EV_A_ (W)w, ev);
281 } 384 }
385}
386
387void
388ev_feed_fd_event (EV_P_ int fd, int revents)
389{
390 fd_event (EV_A_ fd, revents);
282} 391}
283 392
284/*****************************************************************************/ 393/*****************************************************************************/
285
286static int *fdchanges;
287static int fdchangemax, fdchangecnt;
288 394
289static void 395static void
290fd_reify (EV_P) 396fd_reify (EV_P)
291{ 397{
292 int i; 398 int i;
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 408 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303 events |= w->events; 409 events |= w->events;
304 410
305 anfd->reify = 0; 411 anfd->reify = 0;
306 412
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 413 method_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 414 anfd->events = events;
311 }
312 } 415 }
313 416
314 fdchangecnt = 0; 417 fdchangecnt = 0;
315} 418}
316 419
317static void 420static void
318fd_change (EV_P_ int fd) 421fd_change (EV_P_ int fd)
319{ 422{
320 if (anfds [fd].reify || fdchangecnt < 0) 423 if (anfds [fd].reify)
321 return; 424 return;
322 425
323 anfds [fd].reify = 1; 426 anfds [fd].reify = 1;
324 427
325 ++fdchangecnt; 428 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 429 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327 fdchanges [fdchangecnt - 1] = fd; 430 fdchanges [fdchangecnt - 1] = fd;
328} 431}
329 432
330static void 433static void
331fd_kill (EV_P_ int fd) 434fd_kill (EV_P_ int fd)
333 struct ev_io *w; 436 struct ev_io *w;
334 437
335 while ((w = (struct ev_io *)anfds [fd].head)) 438 while ((w = (struct ev_io *)anfds [fd].head))
336 { 439 {
337 ev_io_stop (EV_A_ w); 440 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 441 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 442 }
443}
444
445static int
446fd_valid (int fd)
447{
448#ifdef WIN32
449 return !!win32_get_osfhandle (fd);
450#else
451 return fcntl (fd, F_GETFD) != -1;
452#endif
340} 453}
341 454
342/* called on EBADF to verify fds */ 455/* called on EBADF to verify fds */
343static void 456static void
344fd_ebadf (EV_P) 457fd_ebadf (EV_P)
345{ 458{
346 int fd; 459 int fd;
347 460
348 for (fd = 0; fd < anfdmax; ++fd) 461 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 462 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 463 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 464 fd_kill (EV_A_ fd);
352} 465}
353 466
354/* called on ENOMEM in select/poll to kill some fds and retry */ 467/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 468static void
356fd_enomem (EV_P) 469fd_enomem (EV_P)
357{ 470{
358 int fd = anfdmax; 471 int fd;
359 472
360 while (fd--) 473 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 474 if (anfds [fd].events)
362 { 475 {
363 close (fd);
364 fd_kill (EV_A_ fd); 476 fd_kill (EV_A_ fd);
365 return; 477 return;
366 } 478 }
367} 479}
368 480
481/* usually called after fork if method needs to re-arm all fds from scratch */
482static void
483fd_rearm_all (EV_P)
484{
485 int fd;
486
487 /* this should be highly optimised to not do anything but set a flag */
488 for (fd = 0; fd < anfdmax; ++fd)
489 if (anfds [fd].events)
490 {
491 anfds [fd].events = 0;
492 fd_change (EV_A_ fd);
493 }
494}
495
369/*****************************************************************************/ 496/*****************************************************************************/
370 497
371static struct ev_timer **timers;
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void 498static void
378upheap (WT *timers, int k) 499upheap (WT *heap, int k)
379{ 500{
380 WT w = timers [k]; 501 WT w = heap [k];
381 502
382 while (k && timers [k >> 1]->at > w->at) 503 while (k && heap [k >> 1]->at > w->at)
383 { 504 {
384 timers [k] = timers [k >> 1]; 505 heap [k] = heap [k >> 1];
385 timers [k]->active = k + 1; 506 ((W)heap [k])->active = k + 1;
386 k >>= 1; 507 k >>= 1;
387 } 508 }
388 509
389 timers [k] = w; 510 heap [k] = w;
390 timers [k]->active = k + 1; 511 ((W)heap [k])->active = k + 1;
391 512
392} 513}
393 514
394static void 515static void
395downheap (WT *timers, int N, int k) 516downheap (WT *heap, int N, int k)
396{ 517{
397 WT w = timers [k]; 518 WT w = heap [k];
398 519
399 while (k < (N >> 1)) 520 while (k < (N >> 1))
400 { 521 {
401 int j = k << 1; 522 int j = k << 1;
402 523
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 524 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404 ++j; 525 ++j;
405 526
406 if (w->at <= timers [j]->at) 527 if (w->at <= heap [j]->at)
407 break; 528 break;
408 529
409 timers [k] = timers [j]; 530 heap [k] = heap [j];
410 timers [k]->active = k + 1; 531 ((W)heap [k])->active = k + 1;
411 k = j; 532 k = j;
412 } 533 }
413 534
414 timers [k] = w; 535 heap [k] = w;
415 timers [k]->active = k + 1; 536 ((W)heap [k])->active = k + 1;
537}
538
539inline void
540adjustheap (WT *heap, int N, int k)
541{
542 upheap (heap, k);
543 downheap (heap, N, k);
416} 544}
417 545
418/*****************************************************************************/ 546/*****************************************************************************/
419 547
420typedef struct 548typedef struct
421{ 549{
422 struct ev_watcher_list *head; 550 WL head;
423 sig_atomic_t volatile gotsig; 551 sig_atomic_t volatile gotsig;
424} ANSIG; 552} ANSIG;
425 553
426static ANSIG *signals; 554static ANSIG *signals;
427static int signalmax; 555static int signalmax;
443} 571}
444 572
445static void 573static void
446sighandler (int signum) 574sighandler (int signum)
447{ 575{
576#if WIN32
577 signal (signum, sighandler);
578#endif
579
448 signals [signum - 1].gotsig = 1; 580 signals [signum - 1].gotsig = 1;
449 581
450 if (!gotsig) 582 if (!gotsig)
451 { 583 {
452 int old_errno = errno; 584 int old_errno = errno;
453 gotsig = 1; 585 gotsig = 1;
586#ifdef WIN32
587 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588#else
454 write (sigpipe [1], &signum, 1); 589 write (sigpipe [1], &signum, 1);
590#endif
455 errno = old_errno; 591 errno = old_errno;
456 } 592 }
457} 593}
458 594
595void
596ev_feed_signal_event (EV_P_ int signum)
597{
598 WL w;
599
600#if EV_MULTIPLICITY
601 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
602#endif
603
604 --signum;
605
606 if (signum < 0 || signum >= signalmax)
607 return;
608
609 signals [signum].gotsig = 0;
610
611 for (w = signals [signum].head; w; w = w->next)
612 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613}
614
459static void 615static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 616sigcb (EV_P_ struct ev_io *iow, int revents)
461{ 617{
462 struct ev_watcher_list *w;
463 int signum; 618 int signum;
464 619
620#ifdef WIN32
621 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622#else
465 read (sigpipe [0], &revents, 1); 623 read (sigpipe [0], &revents, 1);
624#endif
466 gotsig = 0; 625 gotsig = 0;
467 626
468 for (signum = signalmax; signum--; ) 627 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 628 if (signals [signum].gotsig)
470 { 629 ev_feed_signal_event (EV_A_ signum + 1);
471 signals [signum].gotsig = 0;
472
473 for (w = signals [signum].head; w; w = w->next)
474 event (EV_A_ (W)w, EV_SIGNAL);
475 }
476} 630}
477 631
478static void 632static void
479siginit (EV_P) 633siginit (EV_P)
480{ 634{
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 640 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 641 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif 642#endif
489 643
490 ev_io_set (&sigev, sigpipe [0], EV_READ); 644 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev); 645 ev_io_start (EV_A_ &sigev);
646 ev_unref (EV_A); /* child watcher should not keep loop alive */
492} 647}
493 648
494/*****************************************************************************/ 649/*****************************************************************************/
495 650
496static struct ev_idle **idles;
497static int idlemax, idlecnt;
498
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506
507static struct ev_child *childs [PID_HASHSIZE]; 651static struct ev_child *childs [PID_HASHSIZE];
652
653#ifndef WIN32
654
508static struct ev_signal childev; 655static struct ev_signal childev;
509
510#ifndef WIN32
511 656
512#ifndef WCONTINUED 657#ifndef WCONTINUED
513# define WCONTINUED 0 658# define WCONTINUED 0
514#endif 659#endif
515 660
519 struct ev_child *w; 664 struct ev_child *w;
520 665
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 666 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid) 667 if (w->pid == pid || !w->pid)
523 { 668 {
524 w->priority = sw->priority; /* need to do it *now* */ 669 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525 w->rpid = pid; 670 w->rpid = pid;
526 w->rstatus = status; 671 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD); 672 ev_feed_event (EV_A_ (W)w, EV_CHILD);
528 } 673 }
529} 674}
530 675
531static void 676static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 677childcb (EV_P_ struct ev_signal *sw, int revents)
534 int pid, status; 679 int pid, status;
535 680
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 681 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 682 {
538 /* make sure we are called again until all childs have been reaped */ 683 /* make sure we are called again until all childs have been reaped */
539 event (EV_A_ (W)sw, EV_SIGNAL); 684 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 685
541 child_reap (EV_A_ sw, pid, pid, status); 686 child_reap (EV_A_ sw, pid, pid, status);
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 687 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
543 } 688 }
544} 689}
551# include "ev_kqueue.c" 696# include "ev_kqueue.c"
552#endif 697#endif
553#if EV_USE_EPOLL 698#if EV_USE_EPOLL
554# include "ev_epoll.c" 699# include "ev_epoll.c"
555#endif 700#endif
556#if EV_USEV_POLL 701#if EV_USE_POLL
557# include "ev_poll.c" 702# include "ev_poll.c"
558#endif 703#endif
559#if EV_USE_SELECT 704#if EV_USE_SELECT
560# include "ev_select.c" 705# include "ev_select.c"
561#endif 706#endif
588ev_method (EV_P) 733ev_method (EV_P)
589{ 734{
590 return method; 735 return method;
591} 736}
592 737
593int 738static void
594ev_init (EV_P_ int methods) 739loop_init (EV_P_ int methods)
595{ 740{
596 if (!method) 741 if (!method)
597 { 742 {
598#if EV_USE_MONOTONIC 743#if EV_USE_MONOTONIC
599 { 744 {
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 746 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 747 have_monotonic = 1;
603 } 748 }
604#endif 749#endif
605 750
606 rt_now = ev_time (); 751 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 752 mn_now = get_clock ();
608 now_floor = mn_now; 753 now_floor = mn_now;
609 diff = rt_now - mn_now; 754 rtmn_diff = ev_rt_now - mn_now;
610
611 if (pipe (sigpipe))
612 return 0;
613 755
614 if (methods == EVMETHOD_AUTO) 756 if (methods == EVMETHOD_AUTO)
615 if (!enable_secure () && getenv ("LIBmethodS")) 757 if (!enable_secure () && getenv ("LIBEV_METHODS"))
616 methods = atoi (getenv ("LIBmethodS")); 758 methods = atoi (getenv ("LIBEV_METHODS"));
617 else 759 else
618 methods = EVMETHOD_ANY; 760 methods = EVMETHOD_ANY;
619 761
620 method = 0; 762 method = 0;
763#if EV_USE_WIN32
764 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
765#endif
621#if EV_USE_KQUEUE 766#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 767 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623#endif 768#endif
624#if EV_USE_EPOLL 769#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 770 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
626#endif 771#endif
627#if EV_USEV_POLL 772#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 773 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629#endif 774#endif
630#if EV_USE_SELECT 775#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 776 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632#endif 777#endif
633 778
779 ev_init (&sigev, sigcb);
780 ev_set_priority (&sigev, EV_MAXPRI);
781 }
782}
783
784void
785loop_destroy (EV_P)
786{
787 int i;
788
789#if EV_USE_WIN32
790 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
791#endif
792#if EV_USE_KQUEUE
793 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
794#endif
795#if EV_USE_EPOLL
796 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
797#endif
798#if EV_USE_POLL
799 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
800#endif
801#if EV_USE_SELECT
802 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
803#endif
804
805 for (i = NUMPRI; i--; )
806 array_free (pending, [i]);
807
808 /* have to use the microsoft-never-gets-it-right macro */
809 array_free_microshit (fdchange);
810 array_free_microshit (timer);
811#if EV_PERIODICS
812 array_free_microshit (periodic);
813#endif
814 array_free_microshit (idle);
815 array_free_microshit (prepare);
816 array_free_microshit (check);
817
818 method = 0;
819}
820
821static void
822loop_fork (EV_P)
823{
824#if EV_USE_EPOLL
825 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
826#endif
827#if EV_USE_KQUEUE
828 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
829#endif
830
831 if (ev_is_active (&sigev))
832 {
833 /* default loop */
834
835 ev_ref (EV_A);
836 ev_io_stop (EV_A_ &sigev);
837 close (sigpipe [0]);
838 close (sigpipe [1]);
839
840 while (pipe (sigpipe))
841 syserr ("(libev) error creating pipe");
842
843 siginit (EV_A);
844 }
845
846 postfork = 0;
847}
848
849#if EV_MULTIPLICITY
850struct ev_loop *
851ev_loop_new (int methods)
852{
853 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854
855 memset (loop, 0, sizeof (struct ev_loop));
856
857 loop_init (EV_A_ methods);
858
859 if (ev_method (EV_A))
860 return loop;
861
862 return 0;
863}
864
865void
866ev_loop_destroy (EV_P)
867{
868 loop_destroy (EV_A);
869 ev_free (loop);
870}
871
872void
873ev_loop_fork (EV_P)
874{
875 postfork = 1;
876}
877
878#endif
879
880#if EV_MULTIPLICITY
881struct ev_loop *
882#else
883int
884#endif
885ev_default_loop (int methods)
886{
887 if (sigpipe [0] == sigpipe [1])
888 if (pipe (sigpipe))
889 return 0;
890
891 if (!default_loop)
892 {
893#if EV_MULTIPLICITY
894 struct ev_loop *loop = default_loop = &default_loop_struct;
895#else
896 default_loop = 1;
897#endif
898
899 loop_init (EV_A_ methods);
900
634 if (method) 901 if (ev_method (EV_A))
635 { 902 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 903 siginit (EV_A);
639 904
640#ifndef WIN32 905#ifndef WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 906 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 907 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 908 ev_signal_start (EV_A_ &childev);
909 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 910#endif
645 } 911 }
912 else
913 default_loop = 0;
646 } 914 }
647 915
648 return method; 916 return default_loop;
917}
918
919void
920ev_default_destroy (void)
921{
922#if EV_MULTIPLICITY
923 struct ev_loop *loop = default_loop;
924#endif
925
926#ifndef WIN32
927 ev_ref (EV_A); /* child watcher */
928 ev_signal_stop (EV_A_ &childev);
929#endif
930
931 ev_ref (EV_A); /* signal watcher */
932 ev_io_stop (EV_A_ &sigev);
933
934 close (sigpipe [0]); sigpipe [0] = 0;
935 close (sigpipe [1]); sigpipe [1] = 0;
936
937 loop_destroy (EV_A);
938}
939
940void
941ev_default_fork (void)
942{
943#if EV_MULTIPLICITY
944 struct ev_loop *loop = default_loop;
945#endif
946
947 if (method)
948 postfork = 1;
649} 949}
650 950
651/*****************************************************************************/ 951/*****************************************************************************/
652 952
653void 953static int
654ev_fork_prepare (void) 954any_pending (EV_P)
655{ 955{
656 /* nop */ 956 int pri;
657}
658 957
659void 958 for (pri = NUMPRI; pri--; )
660ev_fork_parent (void) 959 if (pendingcnt [pri])
661{ 960 return 1;
662 /* nop */
663}
664 961
665void 962 return 0;
666ev_fork_child (void)
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif
672
673 ev_io_stop (&sigev);
674 close (sigpipe [0]);
675 close (sigpipe [1]);
676 pipe (sigpipe);
677 siginit ();
678} 963}
679
680/*****************************************************************************/
681 964
682static void 965static void
683call_pending (EV_P) 966call_pending (EV_P)
684{ 967{
685 int pri; 968 int pri;
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 973 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 974
692 if (p->w) 975 if (p->w)
693 { 976 {
694 p->w->pending = 0; 977 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 978 EV_CB_INVOKE (p->w, p->events);
696 } 979 }
697 } 980 }
698} 981}
699 982
700static void 983static void
701timers_reify (EV_P) 984timers_reify (EV_P)
702{ 985{
703 while (timercnt && timers [0]->at <= mn_now) 986 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 987 {
705 struct ev_timer *w = timers [0]; 988 struct ev_timer *w = timers [0];
989
990 assert (("inactive timer on timer heap detected", ev_is_active (w)));
706 991
707 /* first reschedule or stop timer */ 992 /* first reschedule or stop timer */
708 if (w->repeat) 993 if (w->repeat)
709 { 994 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 995 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
996
711 w->at = mn_now + w->repeat; 997 ((WT)w)->at += w->repeat;
998 if (((WT)w)->at < mn_now)
999 ((WT)w)->at = mn_now;
1000
712 downheap ((WT *)timers, timercnt, 0); 1001 downheap ((WT *)timers, timercnt, 0);
713 } 1002 }
714 else 1003 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1004 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1005
717 event ((W)w, EV_TIMEOUT); 1006 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1007 }
719} 1008}
720 1009
1010#if EV_PERIODICS
721static void 1011static void
722periodics_reify (EV_P) 1012periodics_reify (EV_P)
723{ 1013{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1014 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1015 {
726 struct ev_periodic *w = periodics [0]; 1016 struct ev_periodic *w = periodics [0];
727 1017
1018 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1019
728 /* first reschedule or stop timer */ 1020 /* first reschedule or stop timer */
729 if (w->interval) 1021 if (w->reschedule_cb)
730 { 1022 {
1023 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1024
1025 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026 downheap ((WT *)periodics, periodiccnt, 0);
1027 }
1028 else if (w->interval)
1029 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1030 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1031 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0); 1032 downheap ((WT *)periodics, periodiccnt, 0);
734 } 1033 }
735 else 1034 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1035 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1036
738 event (EV_A_ (W)w, EV_PERIODIC); 1037 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1038 }
740} 1039}
741 1040
742static void 1041static void
743periodics_reschedule (EV_P_ ev_tstamp diff) 1042periodics_reschedule (EV_P)
744{ 1043{
745 int i; 1044 int i;
746 1045
747 /* adjust periodics after time jump */ 1046 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1047 for (i = 0; i < periodiccnt; ++i)
749 { 1048 {
750 struct ev_periodic *w = periodics [i]; 1049 struct ev_periodic *w = periodics [i];
751 1050
1051 if (w->reschedule_cb)
1052 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 if (w->interval) 1053 else if (w->interval)
753 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1054 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
755
756 if (fabs (diff) >= 1e-4)
757 {
758 ev_periodic_stop (EV_A_ w);
759 ev_periodic_start (EV_A_ w);
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 }
763 }
764 } 1055 }
1056
1057 /* now rebuild the heap */
1058 for (i = periodiccnt >> 1; i--; )
1059 downheap ((WT *)periodics, periodiccnt, i);
765} 1060}
1061#endif
766 1062
767inline int 1063inline int
768time_update_monotonic (EV_P) 1064time_update_monotonic (EV_P)
769{ 1065{
770 mn_now = get_clock (); 1066 mn_now = get_clock ();
771 1067
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1068 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 { 1069 {
774 rt_now = mn_now + diff; 1070 ev_rt_now = rtmn_diff + mn_now;
775 return 0; 1071 return 0;
776 } 1072 }
777 else 1073 else
778 { 1074 {
779 now_floor = mn_now; 1075 now_floor = mn_now;
780 rt_now = ev_time (); 1076 ev_rt_now = ev_time ();
781 return 1; 1077 return 1;
782 } 1078 }
783} 1079}
784 1080
785static void 1081static void
790#if EV_USE_MONOTONIC 1086#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1087 if (expect_true (have_monotonic))
792 { 1088 {
793 if (time_update_monotonic (EV_A)) 1089 if (time_update_monotonic (EV_A))
794 { 1090 {
795 ev_tstamp odiff = diff; 1091 ev_tstamp odiff = rtmn_diff;
796 1092
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1093 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 { 1094 {
799 diff = rt_now - mn_now; 1095 rtmn_diff = ev_rt_now - mn_now;
800 1096
801 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1097 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802 return; /* all is well */ 1098 return; /* all is well */
803 1099
804 rt_now = ev_time (); 1100 ev_rt_now = ev_time ();
805 mn_now = get_clock (); 1101 mn_now = get_clock ();
806 now_floor = mn_now; 1102 now_floor = mn_now;
807 } 1103 }
808 1104
1105# if EV_PERIODICS
809 periodics_reschedule (EV_A_ diff - odiff); 1106 periodics_reschedule (EV_A);
1107# endif
810 /* no timer adjustment, as the monotonic clock doesn't jump */ 1108 /* no timer adjustment, as the monotonic clock doesn't jump */
1109 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811 } 1110 }
812 } 1111 }
813 else 1112 else
814#endif 1113#endif
815 { 1114 {
816 rt_now = ev_time (); 1115 ev_rt_now = ev_time ();
817 1116
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1117 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819 { 1118 {
1119#if EV_PERIODICS
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1120 periodics_reschedule (EV_A);
1121#endif
821 1122
822 /* adjust timers. this is easy, as the offset is the same for all */ 1123 /* adjust timers. this is easy, as the offset is the same for all */
823 for (i = 0; i < timercnt; ++i) 1124 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1125 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1126 }
826 1127
827 mn_now = rt_now; 1128 mn_now = ev_rt_now;
828 } 1129 }
829} 1130}
830 1131
831void 1132void
832ev_ref (EV_P) 1133ev_ref (EV_P)
855 { 1156 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1157 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1158 call_pending (EV_A);
858 } 1159 }
859 1160
1161 /* we might have forked, so reify kernel state if necessary */
1162 if (expect_false (postfork))
1163 loop_fork (EV_A);
1164
860 /* update fd-related kernel structures */ 1165 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1166 fd_reify (EV_A);
862 1167
863 /* calculate blocking time */ 1168 /* calculate blocking time */
864 1169
865 /* we only need this for !monotonic clockor timers, but as we basically 1170 /* we only need this for !monotonic clock or timers, but as we basically
866 always have timers, we just calculate it always */ 1171 always have timers, we just calculate it always */
867#if EV_USE_MONOTONIC 1172#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic)) 1173 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A); 1174 time_update_monotonic (EV_A);
870 else 1175 else
871#endif 1176#endif
872 { 1177 {
873 rt_now = ev_time (); 1178 ev_rt_now = ev_time ();
874 mn_now = rt_now; 1179 mn_now = ev_rt_now;
875 } 1180 }
876 1181
877 if (flags & EVLOOP_NONBLOCK || idlecnt) 1182 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.; 1183 block = 0.;
879 else 1184 else
880 { 1185 {
881 block = MAX_BLOCKTIME; 1186 block = MAX_BLOCKTIME;
882 1187
883 if (timercnt) 1188 if (timercnt)
884 { 1189 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1190 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
886 if (block > to) block = to; 1191 if (block > to) block = to;
887 } 1192 }
888 1193
1194#if EV_PERIODICS
889 if (periodiccnt) 1195 if (periodiccnt)
890 { 1196 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1197 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
892 if (block > to) block = to; 1198 if (block > to) block = to;
893 } 1199 }
1200#endif
894 1201
895 if (block < 0.) block = 0.; 1202 if (block < 0.) block = 0.;
896 } 1203 }
897 1204
898 method_poll (EV_A_ block); 1205 method_poll (EV_A_ block);
899 1206
900 /* update rt_now, do magic */ 1207 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1208 time_update (EV_A);
902 1209
903 /* queue pending timers and reschedule them */ 1210 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1211 timers_reify (EV_A); /* relative timers called last */
1212#if EV_PERIODICS
905 periodics_reify (EV_A); /* absolute timers called first */ 1213 periodics_reify (EV_A); /* absolute timers called first */
1214#endif
906 1215
907 /* queue idle watchers unless io or timers are pending */ 1216 /* queue idle watchers unless io or timers are pending */
908 if (!pendingcnt) 1217 if (idlecnt && !any_pending (EV_A))
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1218 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
910 1219
911 /* queue check watchers, to be executed first */ 1220 /* queue check watchers, to be executed first */
912 if (checkcnt) 1221 if (checkcnt)
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1222 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1223
915 call_pending (EV_A); 1224 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D
917 } 1225 }
918 while (activecnt && !loop_done); 1226 while (activecnt && !loop_done);
919 1227
920 if (loop_done != 2) 1228 if (loop_done != 2)
921 loop_done = 0; 1229 loop_done = 0;
989 return; 1297 return;
990 1298
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1299 assert (("ev_io_start called with negative fd", fd >= 0));
992 1300
993 ev_start (EV_A_ (W)w, 1); 1301 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1302 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1303 wlist_add ((WL *)&anfds[fd].head, (WL)w);
996 1304
997 fd_change (EV_A_ fd); 1305 fd_change (EV_A_ fd);
998} 1306}
999 1307
1002{ 1310{
1003 ev_clear_pending (EV_A_ (W)w); 1311 ev_clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1312 if (!ev_is_active (w))
1005 return; 1313 return;
1006 1314
1315 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1317 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1318 ev_stop (EV_A_ (W)w);
1009 1319
1010 fd_change (EV_A_ w->fd); 1320 fd_change (EV_A_ w->fd);
1011} 1321}
1014ev_timer_start (EV_P_ struct ev_timer *w) 1324ev_timer_start (EV_P_ struct ev_timer *w)
1015{ 1325{
1016 if (ev_is_active (w)) 1326 if (ev_is_active (w))
1017 return; 1327 return;
1018 1328
1019 w->at += mn_now; 1329 ((WT)w)->at += mn_now;
1020 1330
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1331 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1332
1023 ev_start (EV_A_ (W)w, ++timercnt); 1333 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1334 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1025 timers [timercnt - 1] = w; 1335 timers [timercnt - 1] = w;
1026 upheap ((WT *)timers, timercnt - 1); 1336 upheap ((WT *)timers, timercnt - 1);
1337
1338 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1027} 1339}
1028 1340
1029void 1341void
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1342ev_timer_stop (EV_P_ struct ev_timer *w)
1031{ 1343{
1032 ev_clear_pending (EV_A_ (W)w); 1344 ev_clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1345 if (!ev_is_active (w))
1034 return; 1346 return;
1035 1347
1348 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1349
1036 if (w->active < timercnt--) 1350 if (((W)w)->active < timercnt--)
1037 { 1351 {
1038 timers [w->active - 1] = timers [timercnt]; 1352 timers [((W)w)->active - 1] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1353 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1040 } 1354 }
1041 1355
1042 w->at = w->repeat; 1356 ((WT)w)->at -= mn_now;
1043 1357
1044 ev_stop (EV_A_ (W)w); 1358 ev_stop (EV_A_ (W)w);
1045} 1359}
1046 1360
1047void 1361void
1049{ 1363{
1050 if (ev_is_active (w)) 1364 if (ev_is_active (w))
1051 { 1365 {
1052 if (w->repeat) 1366 if (w->repeat)
1053 { 1367 {
1054 w->at = mn_now + w->repeat; 1368 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1056 } 1370 }
1057 else 1371 else
1058 ev_timer_stop (EV_A_ w); 1372 ev_timer_stop (EV_A_ w);
1059 } 1373 }
1060 else if (w->repeat) 1374 else if (w->repeat)
1061 ev_timer_start (EV_A_ w); 1375 ev_timer_start (EV_A_ w);
1062} 1376}
1063 1377
1378#if EV_PERIODICS
1064void 1379void
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1380ev_periodic_start (EV_P_ struct ev_periodic *w)
1066{ 1381{
1067 if (ev_is_active (w)) 1382 if (ev_is_active (w))
1068 return; 1383 return;
1069 1384
1385 if (w->reschedule_cb)
1386 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387 else if (w->interval)
1388 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1389 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072 /* this formula differs from the one in periodic_reify because we do not always round up */ 1390 /* this formula differs from the one in periodic_reify because we do not always round up */
1073 if (w->interval)
1074 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1391 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1392 }
1075 1393
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1394 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1395 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1078 periodics [periodiccnt - 1] = w; 1396 periodics [periodiccnt - 1] = w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1397 upheap ((WT *)periodics, periodiccnt - 1);
1398
1399 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1080} 1400}
1081 1401
1082void 1402void
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1403ev_periodic_stop (EV_P_ struct ev_periodic *w)
1084{ 1404{
1085 ev_clear_pending (EV_A_ (W)w); 1405 ev_clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1406 if (!ev_is_active (w))
1087 return; 1407 return;
1088 1408
1409 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1410
1089 if (w->active < periodiccnt--) 1411 if (((W)w)->active < periodiccnt--)
1090 { 1412 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1413 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1414 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1093 } 1415 }
1094 1416
1417 ev_stop (EV_A_ (W)w);
1418}
1419
1420void
1421ev_periodic_again (EV_P_ struct ev_periodic *w)
1422{
1423 /* TODO: use adjustheap and recalculation */
1424 ev_periodic_stop (EV_A_ w);
1425 ev_periodic_start (EV_A_ w);
1426}
1427#endif
1428
1429void
1430ev_idle_start (EV_P_ struct ev_idle *w)
1431{
1432 if (ev_is_active (w))
1433 return;
1434
1435 ev_start (EV_A_ (W)w, ++idlecnt);
1436 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1437 idles [idlecnt - 1] = w;
1438}
1439
1440void
1441ev_idle_stop (EV_P_ struct ev_idle *w)
1442{
1443 ev_clear_pending (EV_A_ (W)w);
1444 if (!ev_is_active (w))
1445 return;
1446
1447 idles [((W)w)->active - 1] = idles [--idlecnt];
1448 ev_stop (EV_A_ (W)w);
1449}
1450
1451void
1452ev_prepare_start (EV_P_ struct ev_prepare *w)
1453{
1454 if (ev_is_active (w))
1455 return;
1456
1457 ev_start (EV_A_ (W)w, ++preparecnt);
1458 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1459 prepares [preparecnt - 1] = w;
1460}
1461
1462void
1463ev_prepare_stop (EV_P_ struct ev_prepare *w)
1464{
1465 ev_clear_pending (EV_A_ (W)w);
1466 if (!ev_is_active (w))
1467 return;
1468
1469 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1470 ev_stop (EV_A_ (W)w);
1471}
1472
1473void
1474ev_check_start (EV_P_ struct ev_check *w)
1475{
1476 if (ev_is_active (w))
1477 return;
1478
1479 ev_start (EV_A_ (W)w, ++checkcnt);
1480 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1481 checks [checkcnt - 1] = w;
1482}
1483
1484void
1485ev_check_stop (EV_P_ struct ev_check *w)
1486{
1487 ev_clear_pending (EV_A_ (W)w);
1488 if (!ev_is_active (w))
1489 return;
1490
1491 checks [((W)w)->active - 1] = checks [--checkcnt];
1095 ev_stop (EV_A_ (W)w); 1492 ev_stop (EV_A_ (W)w);
1096} 1493}
1097 1494
1098#ifndef SA_RESTART 1495#ifndef SA_RESTART
1099# define SA_RESTART 0 1496# define SA_RESTART 0
1100#endif 1497#endif
1101 1498
1102void 1499void
1103ev_signal_start (EV_P_ struct ev_signal *w) 1500ev_signal_start (EV_P_ struct ev_signal *w)
1104{ 1501{
1502#if EV_MULTIPLICITY
1503 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1504#endif
1105 if (ev_is_active (w)) 1505 if (ev_is_active (w))
1106 return; 1506 return;
1107 1507
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1508 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 1509
1110 ev_start (EV_A_ (W)w, 1); 1510 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init); 1511 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1512 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113 1513
1114 if (!w->next) 1514 if (!((WL)w)->next)
1115 { 1515 {
1516#if WIN32
1517 signal (w->signum, sighandler);
1518#else
1116 struct sigaction sa; 1519 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1520 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1521 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1522 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1523 sigaction (w->signum, &sa, 0);
1524#endif
1121 } 1525 }
1122} 1526}
1123 1527
1124void 1528void
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1529ev_signal_stop (EV_P_ struct ev_signal *w)
1134 if (!signals [w->signum - 1].head) 1538 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1539 signal (w->signum, SIG_DFL);
1136} 1540}
1137 1541
1138void 1542void
1139ev_idle_start (EV_P_ struct ev_idle *w)
1140{
1141 if (ev_is_active (w))
1142 return;
1143
1144 ev_start (EV_A_ (W)w, ++idlecnt);
1145 array_needsize (idles, idlemax, idlecnt, );
1146 idles [idlecnt - 1] = w;
1147}
1148
1149void
1150ev_idle_stop (EV_P_ struct ev_idle *w)
1151{
1152 ev_clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w))
1154 return;
1155
1156 idles [w->active - 1] = idles [--idlecnt];
1157 ev_stop (EV_A_ (W)w);
1158}
1159
1160void
1161ev_prepare_start (EV_P_ struct ev_prepare *w)
1162{
1163 if (ev_is_active (w))
1164 return;
1165
1166 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, );
1168 prepares [preparecnt - 1] = w;
1169}
1170
1171void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w)
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w))
1176 return;
1177
1178 prepares [w->active - 1] = prepares [--preparecnt];
1179 ev_stop (EV_A_ (W)w);
1180}
1181
1182void
1183ev_check_start (EV_P_ struct ev_check *w)
1184{
1185 if (ev_is_active (w))
1186 return;
1187
1188 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, );
1190 checks [checkcnt - 1] = w;
1191}
1192
1193void
1194ev_check_stop (EV_P_ struct ev_check *w)
1195{
1196 ev_clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w))
1198 return;
1199
1200 checks [w->active - 1] = checks [--checkcnt];
1201 ev_stop (EV_A_ (W)w);
1202}
1203
1204void
1205ev_child_start (EV_P_ struct ev_child *w) 1543ev_child_start (EV_P_ struct ev_child *w)
1206{ 1544{
1545#if EV_MULTIPLICITY
1546 assert (("child watchers are only supported in the default loop", loop == default_loop));
1547#endif
1207 if (ev_is_active (w)) 1548 if (ev_is_active (w))
1208 return; 1549 return;
1209 1550
1210 ev_start (EV_A_ (W)w, 1); 1551 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1552 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213 1554
1214void 1555void
1215ev_child_stop (EV_P_ struct ev_child *w) 1556ev_child_stop (EV_P_ struct ev_child *w)
1216{ 1557{
1217 ev_clear_pending (EV_A_ (W)w); 1558 ev_clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 1559 if (!ev_is_active (w))
1219 return; 1560 return;
1220 1561
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1562 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1222 ev_stop (EV_A_ (W)w); 1563 ev_stop (EV_A_ (W)w);
1223} 1564}
1238 void (*cb)(int revents, void *arg) = once->cb; 1579 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 1580 void *arg = once->arg;
1240 1581
1241 ev_io_stop (EV_A_ &once->io); 1582 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 1583 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 1584 ev_free (once);
1244 1585
1245 cb (revents, arg); 1586 cb (revents, arg);
1246} 1587}
1247 1588
1248static void 1589static void
1258} 1599}
1259 1600
1260void 1601void
1261ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1602ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262{ 1603{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 1604 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 1605
1265 if (!once) 1606 if (!once)
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1607 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 1608 else
1268 { 1609 {
1269 once->cb = cb; 1610 once->cb = cb;
1270 once->arg = arg; 1611 once->arg = arg;
1271 1612
1272 ev_watcher_init (&once->io, once_cb_io); 1613 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 1614 if (fd >= 0)
1274 { 1615 {
1275 ev_io_set (&once->io, fd, events); 1616 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 1617 ev_io_start (EV_A_ &once->io);
1277 } 1618 }
1278 1619
1279 ev_watcher_init (&once->to, once_cb_to); 1620 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 1621 if (timeout >= 0.)
1281 { 1622 {
1282 ev_timer_set (&once->to, timeout, 0.); 1623 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 1624 ev_timer_start (EV_A_ &once->to);
1284 } 1625 }
1285 } 1626 }
1286} 1627}
1287 1628
1288/*****************************************************************************/ 1629#ifdef __cplusplus
1289
1290#if 0
1291
1292struct ev_io wio;
1293
1294static void
1295sin_cb (struct ev_io *w, int revents)
1296{
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298} 1630}
1299
1300static void
1301ocb (struct ev_timer *w, int revents)
1302{
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304 ev_timer_stop (w);
1305 ev_timer_start (w);
1306}
1307
1308static void
1309scb (struct ev_signal *w, int revents)
1310{
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315
1316static void
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i)
1335 {
1336 struct ev_timer *w = t + i;
1337 ev_watcher_init (w, ocb, i);
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339 ev_timer_start (w);
1340 if (drand48 () < 0.5)
1341 ev_timer_stop (w);
1342 }
1343#endif 1631#endif
1344 1632
1345 struct ev_timer t1;
1346 ev_timer_init (&t1, ocb, 5, 10);
1347 ev_timer_start (&t1);
1348
1349 struct ev_signal sig;
1350 ev_signal_init (&sig, scb, SIGQUIT);
1351 ev_signal_start (&sig);
1352
1353 struct ev_check cw;
1354 ev_check_init (&cw, gcb);
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364}
1365
1366#endif
1367
1368
1369
1370

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