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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.97 by root, Sun Nov 11 01:53:07 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 && 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#include "ev_win32.c"
123
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
156 167
157/*****************************************************************************/ 168/*****************************************************************************/
158 169
159inline ev_tstamp 170static void (*syserr_cb)(const char *msg);
171
172void ev_set_syserr_cb (void (*cb)(const char *msg))
173{
174 syserr_cb = cb;
175}
176
177static void
178syserr (const char *msg)
179{
180 if (!msg)
181 msg = "(libev) system error";
182
183 if (syserr_cb)
184 syserr_cb (msg);
185 else
186 {
187 perror (msg);
188 abort ();
189 }
190}
191
192static void *(*alloc)(void *ptr, long size);
193
194void ev_set_allocator (void *(*cb)(void *ptr, long size))
195{
196 alloc = cb;
197}
198
199static void *
200ev_realloc (void *ptr, long size)
201{
202 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
203
204 if (!ptr && size)
205 {
206 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
207 abort ();
208 }
209
210 return ptr;
211}
212
213#define ev_malloc(size) ev_realloc (0, (size))
214#define ev_free(ptr) ev_realloc ((ptr), 0)
215
216/*****************************************************************************/
217
218typedef struct
219{
220 WL head;
221 unsigned char events;
222 unsigned char reify;
223} ANFD;
224
225typedef struct
226{
227 W w;
228 int events;
229} ANPENDING;
230
231#if EV_MULTIPLICITY
232
233 struct ev_loop
234 {
235 ev_tstamp ev_rt_now;
236 #define VAR(name,decl) decl;
237 #include "ev_vars.h"
238 #undef VAR
239 };
240 #include "ev_wrap.h"
241
242 struct ev_loop default_loop_struct;
243 static struct ev_loop *default_loop;
244
245#else
246
247 ev_tstamp ev_rt_now;
248 #define VAR(name,decl) static decl;
249 #include "ev_vars.h"
250 #undef VAR
251
252 static int default_loop;
253
254#endif
255
256/*****************************************************************************/
257
258ev_tstamp
160ev_time (void) 259ev_time (void)
161{ 260{
162#if EV_USE_REALTIME 261#if EV_USE_REALTIME
163 struct timespec ts; 262 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 263 clock_gettime (CLOCK_REALTIME, &ts);
183#endif 282#endif
184 283
185 return ev_time (); 284 return ev_time ();
186} 285}
187 286
287#if EV_MULTIPLICITY
188ev_tstamp 288ev_tstamp
189ev_now (EV_P) 289ev_now (EV_P)
190{ 290{
191 return rt_now; 291 return ev_rt_now;
192} 292}
293#endif
193 294
194#define array_roundsize(base,n) ((n) | 4 & ~3) 295#define array_roundsize(type,n) ((n) | 4 & ~3)
195 296
196#define array_needsize(base,cur,cnt,init) \ 297#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 298 if (expect_false ((cnt) > cur)) \
198 { \ 299 { \
199 int newcnt = cur; \ 300 int newcnt = cur; \
200 do \ 301 do \
201 { \ 302 { \
202 newcnt = array_roundsize (base, newcnt << 1); \ 303 newcnt = array_roundsize (type, newcnt << 1); \
203 } \ 304 } \
204 while ((cnt) > newcnt); \ 305 while ((cnt) > newcnt); \
205 \ 306 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 307 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207 init (base + cur, newcnt - cur); \ 308 init (base + cur, newcnt - cur); \
208 cur = newcnt; \ 309 cur = newcnt; \
209 } 310 }
311
312#define array_slim(type,stem) \
313 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
314 { \
315 stem ## max = array_roundsize (stem ## cnt >> 1); \
316 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318 }
319
320/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322#define array_free_microshit(stem) \
323 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324
325#define array_free(stem, idx) \
326 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210 327
211/*****************************************************************************/ 328/*****************************************************************************/
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;
222 329
223static void 330static void
224anfds_init (ANFD *base, int count) 331anfds_init (ANFD *base, int count)
225{ 332{
226 while (count--) 333 while (count--)
231 338
232 ++base; 339 ++base;
233 } 340 }
234} 341}
235 342
236typedef struct 343void
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) 344ev_feed_event (EV_P_ void *w, int revents)
247{ 345{
346 W w_ = (W)w;
347
248 if (w->pending) 348 if (w_->pending)
249 { 349 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events; 350 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251 return; 351 return;
252 } 352 }
253 353
254 w->pending = ++pendingcnt [ABSPRI (w)]; 354 w_->pending = ++pendingcnt [ABSPRI (w_)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 355 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
256 pendings [ABSPRI (w)][w->pending - 1].w = w; 356 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257 pendings [ABSPRI (w)][w->pending - 1].events = events; 357 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258} 358}
259 359
260static void 360static void
261queue_events (EV_P_ W *events, int eventcnt, int type) 361queue_events (EV_P_ W *events, int eventcnt, int type)
262{ 362{
263 int i; 363 int i;
264 364
265 for (i = 0; i < eventcnt; ++i) 365 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type); 366 ev_feed_event (EV_A_ events [i], type);
267} 367}
268 368
269static void 369inline void
270fd_event (EV_P_ int fd, int events) 370fd_event (EV_P_ int fd, int revents)
271{ 371{
272 ANFD *anfd = anfds + fd; 372 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 373 struct ev_io *w;
274 374
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
276 { 376 {
277 int ev = w->events & events; 377 int ev = w->events & revents;
278 378
279 if (ev) 379 if (ev)
280 event (EV_A_ (W)w, ev); 380 ev_feed_event (EV_A_ (W)w, ev);
281 } 381 }
382}
383
384void
385ev_feed_fd_event (EV_P_ int fd, int revents)
386{
387 fd_event (EV_A_ fd, revents);
282} 388}
283 389
284/*****************************************************************************/ 390/*****************************************************************************/
285
286static int *fdchanges;
287static int fdchangemax, fdchangecnt;
288 391
289static void 392static void
290fd_reify (EV_P) 393fd_reify (EV_P)
291{ 394{
292 int i; 395 int i;
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 405 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303 events |= w->events; 406 events |= w->events;
304 407
305 anfd->reify = 0; 408 anfd->reify = 0;
306 409
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 410 method_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 411 anfd->events = events;
311 }
312 } 412 }
313 413
314 fdchangecnt = 0; 414 fdchangecnt = 0;
315} 415}
316 416
317static void 417static void
318fd_change (EV_P_ int fd) 418fd_change (EV_P_ int fd)
319{ 419{
320 if (anfds [fd].reify || fdchangecnt < 0) 420 if (anfds [fd].reify)
321 return; 421 return;
322 422
323 anfds [fd].reify = 1; 423 anfds [fd].reify = 1;
324 424
325 ++fdchangecnt; 425 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 426 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327 fdchanges [fdchangecnt - 1] = fd; 427 fdchanges [fdchangecnt - 1] = fd;
328} 428}
329 429
330static void 430static void
331fd_kill (EV_P_ int fd) 431fd_kill (EV_P_ int fd)
333 struct ev_io *w; 433 struct ev_io *w;
334 434
335 while ((w = (struct ev_io *)anfds [fd].head)) 435 while ((w = (struct ev_io *)anfds [fd].head))
336 { 436 {
337 ev_io_stop (EV_A_ w); 437 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 438 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 439 }
440}
441
442static int
443fd_valid (int fd)
444{
445#ifdef WIN32
446 return !!win32_get_osfhandle (fd);
447#else
448 return fcntl (fd, F_GETFD) != -1;
449#endif
340} 450}
341 451
342/* called on EBADF to verify fds */ 452/* called on EBADF to verify fds */
343static void 453static void
344fd_ebadf (EV_P) 454fd_ebadf (EV_P)
345{ 455{
346 int fd; 456 int fd;
347 457
348 for (fd = 0; fd < anfdmax; ++fd) 458 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 459 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 460 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 461 fd_kill (EV_A_ fd);
352} 462}
353 463
354/* called on ENOMEM in select/poll to kill some fds and retry */ 464/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 465static void
356fd_enomem (EV_P) 466fd_enomem (EV_P)
357{ 467{
358 int fd = anfdmax; 468 int fd;
359 469
360 while (fd--) 470 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 471 if (anfds [fd].events)
362 { 472 {
363 close (fd);
364 fd_kill (EV_A_ fd); 473 fd_kill (EV_A_ fd);
365 return; 474 return;
366 } 475 }
367} 476}
368 477
478/* usually called after fork if method needs to re-arm all fds from scratch */
479static void
480fd_rearm_all (EV_P)
481{
482 int fd;
483
484 /* this should be highly optimised to not do anything but set a flag */
485 for (fd = 0; fd < anfdmax; ++fd)
486 if (anfds [fd].events)
487 {
488 anfds [fd].events = 0;
489 fd_change (EV_A_ fd);
490 }
491}
492
369/*****************************************************************************/ 493/*****************************************************************************/
370 494
371static struct ev_timer **timers;
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void 495static void
378upheap (WT *timers, int k) 496upheap (WT *heap, int k)
379{ 497{
380 WT w = timers [k]; 498 WT w = heap [k];
381 499
382 while (k && timers [k >> 1]->at > w->at) 500 while (k && heap [k >> 1]->at > w->at)
383 { 501 {
384 timers [k] = timers [k >> 1]; 502 heap [k] = heap [k >> 1];
385 timers [k]->active = k + 1; 503 ((W)heap [k])->active = k + 1;
386 k >>= 1; 504 k >>= 1;
387 } 505 }
388 506
389 timers [k] = w; 507 heap [k] = w;
390 timers [k]->active = k + 1; 508 ((W)heap [k])->active = k + 1;
391 509
392} 510}
393 511
394static void 512static void
395downheap (WT *timers, int N, int k) 513downheap (WT *heap, int N, int k)
396{ 514{
397 WT w = timers [k]; 515 WT w = heap [k];
398 516
399 while (k < (N >> 1)) 517 while (k < (N >> 1))
400 { 518 {
401 int j = k << 1; 519 int j = k << 1;
402 520
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 521 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404 ++j; 522 ++j;
405 523
406 if (w->at <= timers [j]->at) 524 if (w->at <= heap [j]->at)
407 break; 525 break;
408 526
409 timers [k] = timers [j]; 527 heap [k] = heap [j];
410 timers [k]->active = k + 1; 528 ((W)heap [k])->active = k + 1;
411 k = j; 529 k = j;
412 } 530 }
413 531
414 timers [k] = w; 532 heap [k] = w;
415 timers [k]->active = k + 1; 533 ((W)heap [k])->active = k + 1;
534}
535
536inline void
537adjustheap (WT *heap, int N, int k, ev_tstamp at)
538{
539 ev_tstamp old_at = heap [k]->at;
540 heap [k]->at = at;
541
542 if (old_at < at)
543 downheap (heap, N, k);
544 else
545 upheap (heap, k);
416} 546}
417 547
418/*****************************************************************************/ 548/*****************************************************************************/
419 549
420typedef struct 550typedef struct
421{ 551{
422 struct ev_watcher_list *head; 552 WL head;
423 sig_atomic_t volatile gotsig; 553 sig_atomic_t volatile gotsig;
424} ANSIG; 554} ANSIG;
425 555
426static ANSIG *signals; 556static ANSIG *signals;
427static int signalmax; 557static int signalmax;
443} 573}
444 574
445static void 575static void
446sighandler (int signum) 576sighandler (int signum)
447{ 577{
578#if WIN32
579 signal (signum, sighandler);
580#endif
581
448 signals [signum - 1].gotsig = 1; 582 signals [signum - 1].gotsig = 1;
449 583
450 if (!gotsig) 584 if (!gotsig)
451 { 585 {
452 int old_errno = errno; 586 int old_errno = errno;
453 gotsig = 1; 587 gotsig = 1;
588#ifdef WIN32
589 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590#else
454 write (sigpipe [1], &signum, 1); 591 write (sigpipe [1], &signum, 1);
592#endif
455 errno = old_errno; 593 errno = old_errno;
456 } 594 }
457} 595}
458 596
597void
598ev_feed_signal_event (EV_P_ int signum)
599{
600 WL w;
601
602#if EV_MULTIPLICITY
603 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
604#endif
605
606 --signum;
607
608 if (signum < 0 || signum >= signalmax)
609 return;
610
611 signals [signum].gotsig = 0;
612
613 for (w = signals [signum].head; w; w = w->next)
614 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615}
616
459static void 617static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 618sigcb (EV_P_ struct ev_io *iow, int revents)
461{ 619{
462 struct ev_watcher_list *w;
463 int signum; 620 int signum;
464 621
622#ifdef WIN32
623 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624#else
465 read (sigpipe [0], &revents, 1); 625 read (sigpipe [0], &revents, 1);
626#endif
466 gotsig = 0; 627 gotsig = 0;
467 628
468 for (signum = signalmax; signum--; ) 629 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 630 if (signals [signum].gotsig)
470 { 631 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} 632}
477 633
478static void 634static void
479siginit (EV_P) 635siginit (EV_P)
480{ 636{
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 642 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 643 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif 644#endif
489 645
490 ev_io_set (&sigev, sigpipe [0], EV_READ); 646 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev); 647 ev_io_start (EV_A_ &sigev);
492 ev_unref (EV_A); /* child watcher should not keep loop alive */ 648 ev_unref (EV_A); /* child watcher should not keep loop alive */
493} 649}
494 650
495/*****************************************************************************/ 651/*****************************************************************************/
496 652
497static struct ev_idle **idles;
498static int idlemax, idlecnt;
499
500static struct ev_prepare **prepares;
501static int preparemax, preparecnt;
502
503static struct ev_check **checks;
504static int checkmax, checkcnt;
505
506/*****************************************************************************/
507
508static struct ev_child *childs [PID_HASHSIZE]; 653static struct ev_child *childs [PID_HASHSIZE];
654
655#ifndef WIN32
656
509static struct ev_signal childev; 657static struct ev_signal childev;
510
511#ifndef WIN32
512 658
513#ifndef WCONTINUED 659#ifndef WCONTINUED
514# define WCONTINUED 0 660# define WCONTINUED 0
515#endif 661#endif
516 662
520 struct ev_child *w; 666 struct ev_child *w;
521 667
522 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 668 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
523 if (w->pid == pid || !w->pid) 669 if (w->pid == pid || !w->pid)
524 { 670 {
525 w->priority = sw->priority; /* need to do it *now* */ 671 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
526 w->rpid = pid; 672 w->rpid = pid;
527 w->rstatus = status; 673 w->rstatus = status;
528 event (EV_A_ (W)w, EV_CHILD); 674 ev_feed_event (EV_A_ (W)w, EV_CHILD);
529 } 675 }
530} 676}
531 677
532static void 678static void
533childcb (EV_P_ struct ev_signal *sw, int revents) 679childcb (EV_P_ struct ev_signal *sw, int revents)
535 int pid, status; 681 int pid, status;
536 682
537 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 683 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538 { 684 {
539 /* make sure we are called again until all childs have been reaped */ 685 /* make sure we are called again until all childs have been reaped */
540 event (EV_A_ (W)sw, EV_SIGNAL); 686 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541 687
542 child_reap (EV_A_ sw, pid, pid, status); 688 child_reap (EV_A_ sw, pid, pid, status);
543 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 689 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
544 } 690 }
545} 691}
552# include "ev_kqueue.c" 698# include "ev_kqueue.c"
553#endif 699#endif
554#if EV_USE_EPOLL 700#if EV_USE_EPOLL
555# include "ev_epoll.c" 701# include "ev_epoll.c"
556#endif 702#endif
557#if EV_USEV_POLL 703#if EV_USE_POLL
558# include "ev_poll.c" 704# include "ev_poll.c"
559#endif 705#endif
560#if EV_USE_SELECT 706#if EV_USE_SELECT
561# include "ev_select.c" 707# include "ev_select.c"
562#endif 708#endif
589ev_method (EV_P) 735ev_method (EV_P)
590{ 736{
591 return method; 737 return method;
592} 738}
593 739
594int 740static void
595ev_init (EV_P_ int methods) 741loop_init (EV_P_ int methods)
596{ 742{
597 if (!method) 743 if (!method)
598 { 744 {
599#if EV_USE_MONOTONIC 745#if EV_USE_MONOTONIC
600 { 746 {
602 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 748 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603 have_monotonic = 1; 749 have_monotonic = 1;
604 } 750 }
605#endif 751#endif
606 752
607 rt_now = ev_time (); 753 ev_rt_now = ev_time ();
608 mn_now = get_clock (); 754 mn_now = get_clock ();
609 now_floor = mn_now; 755 now_floor = mn_now;
610 diff = rt_now - mn_now; 756 rtmn_diff = ev_rt_now - mn_now;
611
612 if (pipe (sigpipe))
613 return 0;
614 757
615 if (methods == EVMETHOD_AUTO) 758 if (methods == EVMETHOD_AUTO)
616 if (!enable_secure () && getenv ("LIBmethodS")) 759 if (!enable_secure () && getenv ("LIBEV_METHODS"))
617 methods = atoi (getenv ("LIBmethodS")); 760 methods = atoi (getenv ("LIBEV_METHODS"));
618 else 761 else
619 methods = EVMETHOD_ANY; 762 methods = EVMETHOD_ANY;
620 763
621 method = 0; 764 method = 0;
765#if EV_USE_WIN32
766 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
767#endif
622#if EV_USE_KQUEUE 768#if EV_USE_KQUEUE
623 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 769 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624#endif 770#endif
625#if EV_USE_EPOLL 771#if EV_USE_EPOLL
626 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 772 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627#endif 773#endif
628#if EV_USEV_POLL 774#if EV_USE_POLL
629 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 775 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630#endif 776#endif
631#if EV_USE_SELECT 777#if EV_USE_SELECT
632 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 778 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633#endif 779#endif
634 780
781 ev_init (&sigev, sigcb);
782 ev_set_priority (&sigev, EV_MAXPRI);
783 }
784}
785
786void
787loop_destroy (EV_P)
788{
789 int i;
790
791#if EV_USE_WIN32
792 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
793#endif
794#if EV_USE_KQUEUE
795 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
796#endif
797#if EV_USE_EPOLL
798 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
799#endif
800#if EV_USE_POLL
801 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
802#endif
803#if EV_USE_SELECT
804 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
805#endif
806
807 for (i = NUMPRI; i--; )
808 array_free (pending, [i]);
809
810 /* have to use the microsoft-never-gets-it-right macro */
811 array_free_microshit (fdchange);
812 array_free_microshit (timer);
813#if EV_PERIODICS
814 array_free_microshit (periodic);
815#endif
816 array_free_microshit (idle);
817 array_free_microshit (prepare);
818 array_free_microshit (check);
819
820 method = 0;
821}
822
823static void
824loop_fork (EV_P)
825{
826#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
828#endif
829#if EV_USE_KQUEUE
830 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
831#endif
832
833 if (ev_is_active (&sigev))
834 {
835 /* default loop */
836
837 ev_ref (EV_A);
838 ev_io_stop (EV_A_ &sigev);
839 close (sigpipe [0]);
840 close (sigpipe [1]);
841
842 while (pipe (sigpipe))
843 syserr ("(libev) error creating pipe");
844
845 siginit (EV_A);
846 }
847
848 postfork = 0;
849}
850
851#if EV_MULTIPLICITY
852struct ev_loop *
853ev_loop_new (int methods)
854{
855 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
856
857 memset (loop, 0, sizeof (struct ev_loop));
858
859 loop_init (EV_A_ methods);
860
861 if (ev_method (EV_A))
862 return loop;
863
864 return 0;
865}
866
867void
868ev_loop_destroy (EV_P)
869{
870 loop_destroy (EV_A);
871 ev_free (loop);
872}
873
874void
875ev_loop_fork (EV_P)
876{
877 postfork = 1;
878}
879
880#endif
881
882#if EV_MULTIPLICITY
883struct ev_loop *
884#else
885int
886#endif
887ev_default_loop (int methods)
888{
889 if (sigpipe [0] == sigpipe [1])
890 if (pipe (sigpipe))
891 return 0;
892
893 if (!default_loop)
894 {
895#if EV_MULTIPLICITY
896 struct ev_loop *loop = default_loop = &default_loop_struct;
897#else
898 default_loop = 1;
899#endif
900
901 loop_init (EV_A_ methods);
902
635 if (method) 903 if (ev_method (EV_A))
636 { 904 {
637 ev_watcher_init (&sigev, sigcb);
638 ev_set_priority (&sigev, EV_MAXPRI);
639 siginit (EV_A); 905 siginit (EV_A);
640 906
641#ifndef WIN32 907#ifndef WIN32
642 ev_signal_init (&childev, childcb, SIGCHLD); 908 ev_signal_init (&childev, childcb, SIGCHLD);
643 ev_set_priority (&childev, EV_MAXPRI); 909 ev_set_priority (&childev, EV_MAXPRI);
644 ev_signal_start (EV_A_ &childev); 910 ev_signal_start (EV_A_ &childev);
645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 911 ev_unref (EV_A); /* child watcher should not keep loop alive */
646#endif 912#endif
647 } 913 }
914 else
915 default_loop = 0;
648 } 916 }
649 917
650 return method; 918 return default_loop;
919}
920
921void
922ev_default_destroy (void)
923{
924#if EV_MULTIPLICITY
925 struct ev_loop *loop = default_loop;
926#endif
927
928#ifndef WIN32
929 ev_ref (EV_A); /* child watcher */
930 ev_signal_stop (EV_A_ &childev);
931#endif
932
933 ev_ref (EV_A); /* signal watcher */
934 ev_io_stop (EV_A_ &sigev);
935
936 close (sigpipe [0]); sigpipe [0] = 0;
937 close (sigpipe [1]); sigpipe [1] = 0;
938
939 loop_destroy (EV_A);
940}
941
942void
943ev_default_fork (void)
944{
945#if EV_MULTIPLICITY
946 struct ev_loop *loop = default_loop;
947#endif
948
949 if (method)
950 postfork = 1;
651} 951}
652 952
653/*****************************************************************************/ 953/*****************************************************************************/
654 954
655void 955static int
656ev_fork_prepare (void) 956any_pending (EV_P)
657{ 957{
658 /* nop */ 958 int pri;
659}
660 959
661void 960 for (pri = NUMPRI; pri--; )
662ev_fork_parent (void) 961 if (pendingcnt [pri])
663{ 962 return 1;
664 /* nop */
665}
666 963
667void 964 return 0;
668ev_fork_child (void)
669{
670#if EV_USE_EPOLL
671 if (method == EVMETHOD_EPOLL)
672 epoll_postfork_child ();
673#endif
674
675 ev_io_stop (&sigev);
676 close (sigpipe [0]);
677 close (sigpipe [1]);
678 pipe (sigpipe);
679 siginit ();
680} 965}
681
682/*****************************************************************************/
683 966
684static void 967static void
685call_pending (EV_P) 968call_pending (EV_P)
686{ 969{
687 int pri; 970 int pri;
692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 975 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693 976
694 if (p->w) 977 if (p->w)
695 { 978 {
696 p->w->pending = 0; 979 p->w->pending = 0;
697 p->w->cb (EV_A_ p->w, p->events); 980 EV_CB_INVOKE (p->w, p->events);
698 } 981 }
699 } 982 }
700} 983}
701 984
702static void 985static void
703timers_reify (EV_P) 986timers_reify (EV_P)
704{ 987{
705 while (timercnt && timers [0]->at <= mn_now) 988 while (timercnt && ((WT)timers [0])->at <= mn_now)
706 { 989 {
707 struct ev_timer *w = timers [0]; 990 struct ev_timer *w = timers [0];
991
992 assert (("inactive timer on timer heap detected", ev_is_active (w)));
708 993
709 /* first reschedule or stop timer */ 994 /* first reschedule or stop timer */
710 if (w->repeat) 995 if (w->repeat)
711 { 996 {
712 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 997 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
998
713 w->at = mn_now + w->repeat; 999 ((WT)w)->at += w->repeat;
1000 if (((WT)w)->at < mn_now)
1001 ((WT)w)->at = mn_now;
1002
714 downheap ((WT *)timers, timercnt, 0); 1003 downheap ((WT *)timers, timercnt, 0);
715 } 1004 }
716 else 1005 else
717 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1006 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718 1007
719 event ((W)w, EV_TIMEOUT); 1008 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720 } 1009 }
721} 1010}
722 1011
1012#if EV_PERIODICS
723static void 1013static void
724periodics_reify (EV_P) 1014periodics_reify (EV_P)
725{ 1015{
726 while (periodiccnt && periodics [0]->at <= rt_now) 1016 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727 { 1017 {
728 struct ev_periodic *w = periodics [0]; 1018 struct ev_periodic *w = periodics [0];
729 1019
1020 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1021
730 /* first reschedule or stop timer */ 1022 /* first reschedule or stop timer */
731 if (w->interval) 1023 if (w->reschedule_cb)
732 { 1024 {
1025 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1026
1027 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1028 downheap ((WT *)periodics, periodiccnt, 0);
1029 }
1030 else if (w->interval)
1031 {
733 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1032 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1033 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735 downheap ((WT *)periodics, periodiccnt, 0); 1034 downheap ((WT *)periodics, periodiccnt, 0);
736 } 1035 }
737 else 1036 else
738 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1037 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739 1038
740 event (EV_A_ (W)w, EV_PERIODIC); 1039 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741 } 1040 }
742} 1041}
743 1042
744static void 1043static void
745periodics_reschedule (EV_P_ ev_tstamp diff) 1044periodics_reschedule (EV_P)
746{ 1045{
747 int i; 1046 int i;
748 1047
749 /* adjust periodics after time jump */ 1048 /* adjust periodics after time jump */
750 for (i = 0; i < periodiccnt; ++i) 1049 for (i = 0; i < periodiccnt; ++i)
751 { 1050 {
752 struct ev_periodic *w = periodics [i]; 1051 struct ev_periodic *w = periodics [i];
753 1052
1053 if (w->reschedule_cb)
1054 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754 if (w->interval) 1055 else if (w->interval)
755 {
756 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1056 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
757
758 if (fabs (diff) >= 1e-4)
759 {
760 ev_periodic_stop (EV_A_ w);
761 ev_periodic_start (EV_A_ w);
762
763 i = 0; /* restart loop, inefficient, but time jumps should be rare */
764 }
765 }
766 } 1057 }
1058
1059 /* now rebuild the heap */
1060 for (i = periodiccnt >> 1; i--; )
1061 downheap ((WT *)periodics, periodiccnt, i);
767} 1062}
1063#endif
768 1064
769inline int 1065inline int
770time_update_monotonic (EV_P) 1066time_update_monotonic (EV_P)
771{ 1067{
772 mn_now = get_clock (); 1068 mn_now = get_clock ();
773 1069
774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1070 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775 { 1071 {
776 rt_now = mn_now + diff; 1072 ev_rt_now = rtmn_diff + mn_now;
777 return 0; 1073 return 0;
778 } 1074 }
779 else 1075 else
780 { 1076 {
781 now_floor = mn_now; 1077 now_floor = mn_now;
782 rt_now = ev_time (); 1078 ev_rt_now = ev_time ();
783 return 1; 1079 return 1;
784 } 1080 }
785} 1081}
786 1082
787static void 1083static void
792#if EV_USE_MONOTONIC 1088#if EV_USE_MONOTONIC
793 if (expect_true (have_monotonic)) 1089 if (expect_true (have_monotonic))
794 { 1090 {
795 if (time_update_monotonic (EV_A)) 1091 if (time_update_monotonic (EV_A))
796 { 1092 {
797 ev_tstamp odiff = diff; 1093 ev_tstamp odiff = rtmn_diff;
798 1094
799 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1095 for (i = 4; --i; ) /* loop a few times, before making important decisions */
800 { 1096 {
801 diff = rt_now - mn_now; 1097 rtmn_diff = ev_rt_now - mn_now;
802 1098
803 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1099 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804 return; /* all is well */ 1100 return; /* all is well */
805 1101
806 rt_now = ev_time (); 1102 ev_rt_now = ev_time ();
807 mn_now = get_clock (); 1103 mn_now = get_clock ();
808 now_floor = mn_now; 1104 now_floor = mn_now;
809 } 1105 }
810 1106
1107# if EV_PERIODICS
811 periodics_reschedule (EV_A_ diff - odiff); 1108 periodics_reschedule (EV_A);
1109# endif
812 /* no timer adjustment, as the monotonic clock doesn't jump */ 1110 /* no timer adjustment, as the monotonic clock doesn't jump */
1111 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813 } 1112 }
814 } 1113 }
815 else 1114 else
816#endif 1115#endif
817 { 1116 {
818 rt_now = ev_time (); 1117 ev_rt_now = ev_time ();
819 1118
820 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1119 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821 { 1120 {
1121#if EV_PERIODICS
822 periodics_reschedule (EV_A_ rt_now - mn_now); 1122 periodics_reschedule (EV_A);
1123#endif
823 1124
824 /* adjust timers. this is easy, as the offset is the same for all */ 1125 /* adjust timers. this is easy, as the offset is the same for all */
825 for (i = 0; i < timercnt; ++i) 1126 for (i = 0; i < timercnt; ++i)
826 timers [i]->at += diff; 1127 ((WT)timers [i])->at += ev_rt_now - mn_now;
827 } 1128 }
828 1129
829 mn_now = rt_now; 1130 mn_now = ev_rt_now;
830 } 1131 }
831} 1132}
832 1133
833void 1134void
834ev_ref (EV_P) 1135ev_ref (EV_P)
857 { 1158 {
858 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1159 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859 call_pending (EV_A); 1160 call_pending (EV_A);
860 } 1161 }
861 1162
1163 /* we might have forked, so reify kernel state if necessary */
1164 if (expect_false (postfork))
1165 loop_fork (EV_A);
1166
862 /* update fd-related kernel structures */ 1167 /* update fd-related kernel structures */
863 fd_reify (EV_A); 1168 fd_reify (EV_A);
864 1169
865 /* calculate blocking time */ 1170 /* calculate blocking time */
866 1171
867 /* we only need this for !monotonic clockor timers, but as we basically 1172 /* we only need this for !monotonic clock or timers, but as we basically
868 always have timers, we just calculate it always */ 1173 always have timers, we just calculate it always */
869#if EV_USE_MONOTONIC 1174#if EV_USE_MONOTONIC
870 if (expect_true (have_monotonic)) 1175 if (expect_true (have_monotonic))
871 time_update_monotonic (EV_A); 1176 time_update_monotonic (EV_A);
872 else 1177 else
873#endif 1178#endif
874 { 1179 {
875 rt_now = ev_time (); 1180 ev_rt_now = ev_time ();
876 mn_now = rt_now; 1181 mn_now = ev_rt_now;
877 } 1182 }
878 1183
879 if (flags & EVLOOP_NONBLOCK || idlecnt) 1184 if (flags & EVLOOP_NONBLOCK || idlecnt)
880 block = 0.; 1185 block = 0.;
881 else 1186 else
882 { 1187 {
883 block = MAX_BLOCKTIME; 1188 block = MAX_BLOCKTIME;
884 1189
885 if (timercnt) 1190 if (timercnt)
886 { 1191 {
887 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1192 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888 if (block > to) block = to; 1193 if (block > to) block = to;
889 } 1194 }
890 1195
1196#if EV_PERIODICS
891 if (periodiccnt) 1197 if (periodiccnt)
892 { 1198 {
893 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1199 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
894 if (block > to) block = to; 1200 if (block > to) block = to;
895 } 1201 }
1202#endif
896 1203
897 if (block < 0.) block = 0.; 1204 if (block < 0.) block = 0.;
898 } 1205 }
899 1206
900 method_poll (EV_A_ block); 1207 method_poll (EV_A_ block);
901 1208
902 /* update rt_now, do magic */ 1209 /* update ev_rt_now, do magic */
903 time_update (EV_A); 1210 time_update (EV_A);
904 1211
905 /* queue pending timers and reschedule them */ 1212 /* queue pending timers and reschedule them */
906 timers_reify (EV_A); /* relative timers called last */ 1213 timers_reify (EV_A); /* relative timers called last */
1214#if EV_PERIODICS
907 periodics_reify (EV_A); /* absolute timers called first */ 1215 periodics_reify (EV_A); /* absolute timers called first */
1216#endif
908 1217
909 /* queue idle watchers unless io or timers are pending */ 1218 /* queue idle watchers unless io or timers are pending */
910 if (!pendingcnt) 1219 if (idlecnt && !any_pending (EV_A))
911 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1220 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912 1221
913 /* queue check watchers, to be executed first */ 1222 /* queue check watchers, to be executed first */
914 if (checkcnt) 1223 if (checkcnt)
915 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1224 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
990 return; 1299 return;
991 1300
992 assert (("ev_io_start called with negative fd", fd >= 0)); 1301 assert (("ev_io_start called with negative fd", fd >= 0));
993 1302
994 ev_start (EV_A_ (W)w, 1); 1303 ev_start (EV_A_ (W)w, 1);
995 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1304 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1305 wlist_add ((WL *)&anfds[fd].head, (WL)w);
997 1306
998 fd_change (EV_A_ fd); 1307 fd_change (EV_A_ fd);
999} 1308}
1000 1309
1003{ 1312{
1004 ev_clear_pending (EV_A_ (W)w); 1313 ev_clear_pending (EV_A_ (W)w);
1005 if (!ev_is_active (w)) 1314 if (!ev_is_active (w))
1006 return; 1315 return;
1007 1316
1317 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1318
1008 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1319 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009 ev_stop (EV_A_ (W)w); 1320 ev_stop (EV_A_ (W)w);
1010 1321
1011 fd_change (EV_A_ w->fd); 1322 fd_change (EV_A_ w->fd);
1012} 1323}
1015ev_timer_start (EV_P_ struct ev_timer *w) 1326ev_timer_start (EV_P_ struct ev_timer *w)
1016{ 1327{
1017 if (ev_is_active (w)) 1328 if (ev_is_active (w))
1018 return; 1329 return;
1019 1330
1020 w->at += mn_now; 1331 ((WT)w)->at += mn_now;
1021 1332
1022 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1333 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023 1334
1024 ev_start (EV_A_ (W)w, ++timercnt); 1335 ev_start (EV_A_ (W)w, ++timercnt);
1025 array_needsize (timers, timermax, timercnt, ); 1336 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026 timers [timercnt - 1] = w; 1337 timers [timercnt - 1] = w;
1027 upheap ((WT *)timers, timercnt - 1); 1338 upheap ((WT *)timers, timercnt - 1);
1339
1340 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028} 1341}
1029 1342
1030void 1343void
1031ev_timer_stop (EV_P_ struct ev_timer *w) 1344ev_timer_stop (EV_P_ struct ev_timer *w)
1032{ 1345{
1033 ev_clear_pending (EV_A_ (W)w); 1346 ev_clear_pending (EV_A_ (W)w);
1034 if (!ev_is_active (w)) 1347 if (!ev_is_active (w))
1035 return; 1348 return;
1036 1349
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351
1037 if (w->active < timercnt--) 1352 if (((W)w)->active < timercnt--)
1038 { 1353 {
1039 timers [w->active - 1] = timers [timercnt]; 1354 timers [((W)w)->active - 1] = timers [timercnt];
1040 downheap ((WT *)timers, timercnt, w->active - 1); 1355 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041 } 1356 }
1042 1357
1043 w->at = w->repeat; 1358 ((WT)w)->at -= mn_now;
1044 1359
1045 ev_stop (EV_A_ (W)w); 1360 ev_stop (EV_A_ (W)w);
1046} 1361}
1047 1362
1048void 1363void
1049ev_timer_again (EV_P_ struct ev_timer *w) 1364ev_timer_again (EV_P_ struct ev_timer *w)
1050{ 1365{
1051 if (ev_is_active (w)) 1366 if (ev_is_active (w))
1052 { 1367 {
1053 if (w->repeat) 1368 if (w->repeat)
1054 {
1055 w->at = mn_now + w->repeat;
1056 downheap ((WT *)timers, timercnt, w->active - 1); 1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1057 }
1058 else 1370 else
1059 ev_timer_stop (EV_A_ w); 1371 ev_timer_stop (EV_A_ w);
1060 } 1372 }
1061 else if (w->repeat) 1373 else if (w->repeat)
1062 ev_timer_start (EV_A_ w); 1374 ev_timer_start (EV_A_ w);
1063} 1375}
1064 1376
1377#if EV_PERIODICS
1065void 1378void
1066ev_periodic_start (EV_P_ struct ev_periodic *w) 1379ev_periodic_start (EV_P_ struct ev_periodic *w)
1067{ 1380{
1068 if (ev_is_active (w)) 1381 if (ev_is_active (w))
1069 return; 1382 return;
1070 1383
1384 if (w->reschedule_cb)
1385 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386 else if (w->interval)
1387 {
1071 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1388 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072
1073 /* this formula differs from the one in periodic_reify because we do not always round up */ 1389 /* this formula differs from the one in periodic_reify because we do not always round up */
1074 if (w->interval)
1075 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1390 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1391 }
1076 1392
1077 ev_start (EV_A_ (W)w, ++periodiccnt); 1393 ev_start (EV_A_ (W)w, ++periodiccnt);
1078 array_needsize (periodics, periodicmax, periodiccnt, ); 1394 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079 periodics [periodiccnt - 1] = w; 1395 periodics [periodiccnt - 1] = w;
1080 upheap ((WT *)periodics, periodiccnt - 1); 1396 upheap ((WT *)periodics, periodiccnt - 1);
1397
1398 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081} 1399}
1082 1400
1083void 1401void
1084ev_periodic_stop (EV_P_ struct ev_periodic *w) 1402ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085{ 1403{
1086 ev_clear_pending (EV_A_ (W)w); 1404 ev_clear_pending (EV_A_ (W)w);
1087 if (!ev_is_active (w)) 1405 if (!ev_is_active (w))
1088 return; 1406 return;
1089 1407
1408 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1409
1090 if (w->active < periodiccnt--) 1410 if (((W)w)->active < periodiccnt--)
1091 { 1411 {
1092 periodics [w->active - 1] = periodics [periodiccnt]; 1412 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1413 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094 } 1414 }
1095 1415
1416 ev_stop (EV_A_ (W)w);
1417}
1418
1419void
1420ev_periodic_again (EV_P_ struct ev_periodic *w)
1421{
1422 /* TODO: use adjustheap and recalculation */
1423 ev_periodic_stop (EV_A_ w);
1424 ev_periodic_start (EV_A_ w);
1425}
1426#endif
1427
1428void
1429ev_idle_start (EV_P_ struct ev_idle *w)
1430{
1431 if (ev_is_active (w))
1432 return;
1433
1434 ev_start (EV_A_ (W)w, ++idlecnt);
1435 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1436 idles [idlecnt - 1] = w;
1437}
1438
1439void
1440ev_idle_stop (EV_P_ struct ev_idle *w)
1441{
1442 ev_clear_pending (EV_A_ (W)w);
1443 if (ev_is_active (w))
1444 return;
1445
1446 idles [((W)w)->active - 1] = idles [--idlecnt];
1447 ev_stop (EV_A_ (W)w);
1448}
1449
1450void
1451ev_prepare_start (EV_P_ struct ev_prepare *w)
1452{
1453 if (ev_is_active (w))
1454 return;
1455
1456 ev_start (EV_A_ (W)w, ++preparecnt);
1457 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1458 prepares [preparecnt - 1] = w;
1459}
1460
1461void
1462ev_prepare_stop (EV_P_ struct ev_prepare *w)
1463{
1464 ev_clear_pending (EV_A_ (W)w);
1465 if (ev_is_active (w))
1466 return;
1467
1468 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1469 ev_stop (EV_A_ (W)w);
1470}
1471
1472void
1473ev_check_start (EV_P_ struct ev_check *w)
1474{
1475 if (ev_is_active (w))
1476 return;
1477
1478 ev_start (EV_A_ (W)w, ++checkcnt);
1479 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1480 checks [checkcnt - 1] = w;
1481}
1482
1483void
1484ev_check_stop (EV_P_ struct ev_check *w)
1485{
1486 ev_clear_pending (EV_A_ (W)w);
1487 if (!ev_is_active (w))
1488 return;
1489
1490 checks [((W)w)->active - 1] = checks [--checkcnt];
1096 ev_stop (EV_A_ (W)w); 1491 ev_stop (EV_A_ (W)w);
1097} 1492}
1098 1493
1099#ifndef SA_RESTART 1494#ifndef SA_RESTART
1100# define SA_RESTART 0 1495# define SA_RESTART 0
1101#endif 1496#endif
1102 1497
1103void 1498void
1104ev_signal_start (EV_P_ struct ev_signal *w) 1499ev_signal_start (EV_P_ struct ev_signal *w)
1105{ 1500{
1501#if EV_MULTIPLICITY
1502 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1503#endif
1106 if (ev_is_active (w)) 1504 if (ev_is_active (w))
1107 return; 1505 return;
1108 1506
1109 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1507 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110 1508
1111 ev_start (EV_A_ (W)w, 1); 1509 ev_start (EV_A_ (W)w, 1);
1112 array_needsize (signals, signalmax, w->signum, signals_init); 1510 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1511 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114 1512
1115 if (!w->next) 1513 if (!((WL)w)->next)
1116 { 1514 {
1515#if WIN32
1516 signal (w->signum, sighandler);
1517#else
1117 struct sigaction sa; 1518 struct sigaction sa;
1118 sa.sa_handler = sighandler; 1519 sa.sa_handler = sighandler;
1119 sigfillset (&sa.sa_mask); 1520 sigfillset (&sa.sa_mask);
1120 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1521 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121 sigaction (w->signum, &sa, 0); 1522 sigaction (w->signum, &sa, 0);
1523#endif
1122 } 1524 }
1123} 1525}
1124 1526
1125void 1527void
1126ev_signal_stop (EV_P_ struct ev_signal *w) 1528ev_signal_stop (EV_P_ struct ev_signal *w)
1135 if (!signals [w->signum - 1].head) 1537 if (!signals [w->signum - 1].head)
1136 signal (w->signum, SIG_DFL); 1538 signal (w->signum, SIG_DFL);
1137} 1539}
1138 1540
1139void 1541void
1140ev_idle_start (EV_P_ struct ev_idle *w)
1141{
1142 if (ev_is_active (w))
1143 return;
1144
1145 ev_start (EV_A_ (W)w, ++idlecnt);
1146 array_needsize (idles, idlemax, idlecnt, );
1147 idles [idlecnt - 1] = w;
1148}
1149
1150void
1151ev_idle_stop (EV_P_ struct ev_idle *w)
1152{
1153 ev_clear_pending (EV_A_ (W)w);
1154 if (ev_is_active (w))
1155 return;
1156
1157 idles [w->active - 1] = idles [--idlecnt];
1158 ev_stop (EV_A_ (W)w);
1159}
1160
1161void
1162ev_prepare_start (EV_P_ struct ev_prepare *w)
1163{
1164 if (ev_is_active (w))
1165 return;
1166
1167 ev_start (EV_A_ (W)w, ++preparecnt);
1168 array_needsize (prepares, preparemax, preparecnt, );
1169 prepares [preparecnt - 1] = w;
1170}
1171
1172void
1173ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174{
1175 ev_clear_pending (EV_A_ (W)w);
1176 if (ev_is_active (w))
1177 return;
1178
1179 prepares [w->active - 1] = prepares [--preparecnt];
1180 ev_stop (EV_A_ (W)w);
1181}
1182
1183void
1184ev_check_start (EV_P_ struct ev_check *w)
1185{
1186 if (ev_is_active (w))
1187 return;
1188
1189 ev_start (EV_A_ (W)w, ++checkcnt);
1190 array_needsize (checks, checkmax, checkcnt, );
1191 checks [checkcnt - 1] = w;
1192}
1193
1194void
1195ev_check_stop (EV_P_ struct ev_check *w)
1196{
1197 ev_clear_pending (EV_A_ (W)w);
1198 if (ev_is_active (w))
1199 return;
1200
1201 checks [w->active - 1] = checks [--checkcnt];
1202 ev_stop (EV_A_ (W)w);
1203}
1204
1205void
1206ev_child_start (EV_P_ struct ev_child *w) 1542ev_child_start (EV_P_ struct ev_child *w)
1207{ 1543{
1544#if EV_MULTIPLICITY
1545 assert (("child watchers are only supported in the default loop", loop == default_loop));
1546#endif
1208 if (ev_is_active (w)) 1547 if (ev_is_active (w))
1209 return; 1548 return;
1210 1549
1211 ev_start (EV_A_ (W)w, 1); 1550 ev_start (EV_A_ (W)w, 1);
1212 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1551 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1214 1553
1215void 1554void
1216ev_child_stop (EV_P_ struct ev_child *w) 1555ev_child_stop (EV_P_ struct ev_child *w)
1217{ 1556{
1218 ev_clear_pending (EV_A_ (W)w); 1557 ev_clear_pending (EV_A_ (W)w);
1219 if (ev_is_active (w)) 1558 if (!ev_is_active (w))
1220 return; 1559 return;
1221 1560
1222 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1561 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1223 ev_stop (EV_A_ (W)w); 1562 ev_stop (EV_A_ (W)w);
1224} 1563}
1239 void (*cb)(int revents, void *arg) = once->cb; 1578 void (*cb)(int revents, void *arg) = once->cb;
1240 void *arg = once->arg; 1579 void *arg = once->arg;
1241 1580
1242 ev_io_stop (EV_A_ &once->io); 1581 ev_io_stop (EV_A_ &once->io);
1243 ev_timer_stop (EV_A_ &once->to); 1582 ev_timer_stop (EV_A_ &once->to);
1244 free (once); 1583 ev_free (once);
1245 1584
1246 cb (revents, arg); 1585 cb (revents, arg);
1247} 1586}
1248 1587
1249static void 1588static void
1259} 1598}
1260 1599
1261void 1600void
1262ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1601ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263{ 1602{
1264 struct ev_once *once = malloc (sizeof (struct ev_once)); 1603 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265 1604
1266 if (!once) 1605 if (!once)
1267 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1606 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268 else 1607 else
1269 { 1608 {
1270 once->cb = cb; 1609 once->cb = cb;
1271 once->arg = arg; 1610 once->arg = arg;
1272 1611
1273 ev_watcher_init (&once->io, once_cb_io); 1612 ev_init (&once->io, once_cb_io);
1274 if (fd >= 0) 1613 if (fd >= 0)
1275 { 1614 {
1276 ev_io_set (&once->io, fd, events); 1615 ev_io_set (&once->io, fd, events);
1277 ev_io_start (EV_A_ &once->io); 1616 ev_io_start (EV_A_ &once->io);
1278 } 1617 }
1279 1618
1280 ev_watcher_init (&once->to, once_cb_to); 1619 ev_init (&once->to, once_cb_to);
1281 if (timeout >= 0.) 1620 if (timeout >= 0.)
1282 { 1621 {
1283 ev_timer_set (&once->to, timeout, 0.); 1622 ev_timer_set (&once->to, timeout, 0.);
1284 ev_timer_start (EV_A_ &once->to); 1623 ev_timer_start (EV_A_ &once->to);
1285 } 1624 }
1286 } 1625 }
1287} 1626}
1288 1627
1289/*****************************************************************************/ 1628#ifdef __cplusplus
1290
1291#if 0
1292
1293struct ev_io wio;
1294
1295static void
1296sin_cb (struct ev_io *w, int revents)
1297{
1298 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299} 1629}
1300
1301static void
1302ocb (struct ev_timer *w, int revents)
1303{
1304 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305 ev_timer_stop (w);
1306 ev_timer_start (w);
1307}
1308
1309static void
1310scb (struct ev_signal *w, int revents)
1311{
1312 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313 ev_io_stop (&wio);
1314 ev_io_start (&wio);
1315}
1316
1317static void
1318gcb (struct ev_signal *w, int revents)
1319{
1320 fprintf (stderr, "generic %x\n", revents);
1321
1322}
1323
1324int main (void)
1325{
1326 ev_init (0);
1327
1328 ev_io_init (&wio, sin_cb, 0, EV_READ);
1329 ev_io_start (&wio);
1330
1331 struct ev_timer t[10000];
1332
1333#if 0
1334 int i;
1335 for (i = 0; i < 10000; ++i)
1336 {
1337 struct ev_timer *w = t + i;
1338 ev_watcher_init (w, ocb, i);
1339 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340 ev_timer_start (w);
1341 if (drand48 () < 0.5)
1342 ev_timer_stop (w);
1343 }
1344#endif 1630#endif
1345 1631
1346 struct ev_timer t1;
1347 ev_timer_init (&t1, ocb, 5, 10);
1348 ev_timer_start (&t1);
1349
1350 struct ev_signal sig;
1351 ev_signal_init (&sig, scb, SIGQUIT);
1352 ev_signal_start (&sig);
1353
1354 struct ev_check cw;
1355 ev_check_init (&cw, gcb);
1356 ev_check_start (&cw);
1357
1358 struct ev_idle iw;
1359 ev_idle_init (&iw, gcb);
1360 ev_idle_start (&iw);
1361
1362 ev_loop (0);
1363
1364 return 0;
1365}
1366
1367#endif
1368
1369
1370
1371

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