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Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC

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#ifndef EV_STANDALONE 31#ifndef EV_STANDALONE
32# include "config.h" 32# include "config.h"
33
34# if HAVE_CLOCK_GETTIME
35# define EV_USE_MONOTONIC 1
36# define EV_USE_REALTIME 1
37# endif
38
39# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1
41# endif
42
43# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1
45# endif
46
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1
49# endif
50
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1
53# endif
54
33#endif 55#endif
34 56
35#include <math.h> 57#include <math.h>
36#include <stdlib.h> 58#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 59#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 60#include <stddef.h>
41 61
42#include <stdio.h> 62#include <stdio.h>
43 63
44#include <assert.h> 64#include <assert.h>
45#include <errno.h> 65#include <errno.h>
46#include <sys/types.h> 66#include <sys/types.h>
67#include <time.h>
68
69#include <signal.h>
70
47#ifndef WIN32 71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
48# include <sys/wait.h> 74# include <sys/wait.h>
49#endif 75#endif
50#include <sys/time.h>
51#include <time.h>
52
53/**/ 76/**/
54 77
55#ifndef EV_USE_MONOTONIC 78#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 79# define EV_USE_MONOTONIC 1
57#endif 80#endif
68# define EV_USE_EPOLL 0 91# define EV_USE_EPOLL 0
69#endif 92#endif
70 93
71#ifndef EV_USE_KQUEUE 94#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
73#endif 106#endif
74 107
75#ifndef EV_USE_REALTIME 108#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 109# define EV_USE_REALTIME 1
77#endif 110#endif
113 146
114typedef struct ev_watcher *W; 147typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 148typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 149typedef struct ev_watcher_time *WT;
117 150
118static ev_tstamp now_floor, now, diff; /* monotonic clock */ 151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119ev_tstamp ev_now;
120int ev_method;
121 152
122static int have_monotonic; /* runtime */ 153#include "ev_win32.c"
123
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(int fd, int oev, int nev);
126static void (*method_poll)(ev_tstamp timeout);
127 154
128/*****************************************************************************/ 155/*****************************************************************************/
129 156
130ev_tstamp 157static void (*syserr_cb)(const char *msg);
158
159void ev_set_syserr_cb (void (*cb)(const char *msg))
160{
161 syserr_cb = cb;
162}
163
164static void
165syserr (const char *msg)
166{
167 if (!msg)
168 msg = "(libev) system error";
169
170 if (syserr_cb)
171 syserr_cb (msg);
172 else
173 {
174 perror (msg);
175 abort ();
176 }
177}
178
179static void *(*alloc)(void *ptr, long size);
180
181void ev_set_allocator (void *(*cb)(void *ptr, long size))
182{
183 alloc = cb;
184}
185
186static void *
187ev_realloc (void *ptr, long size)
188{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190
191 if (!ptr && size)
192 {
193 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
194 abort ();
195 }
196
197 return ptr;
198}
199
200#define ev_malloc(size) ev_realloc (0, (size))
201#define ev_free(ptr) ev_realloc ((ptr), 0)
202
203/*****************************************************************************/
204
205typedef struct
206{
207 WL head;
208 unsigned char events;
209 unsigned char reify;
210} ANFD;
211
212typedef struct
213{
214 W w;
215 int events;
216} ANPENDING;
217
218#if EV_MULTIPLICITY
219
220struct ev_loop
221{
222# define VAR(name,decl) decl;
223# include "ev_vars.h"
224};
225# undef VAR
226# include "ev_wrap.h"
227
228#else
229
230# define VAR(name,decl) static decl;
231# include "ev_vars.h"
232# undef VAR
233
234#endif
235
236/*****************************************************************************/
237
238inline ev_tstamp
131ev_time (void) 239ev_time (void)
132{ 240{
133#if EV_USE_REALTIME 241#if EV_USE_REALTIME
134 struct timespec ts; 242 struct timespec ts;
135 clock_gettime (CLOCK_REALTIME, &ts); 243 clock_gettime (CLOCK_REALTIME, &ts);
139 gettimeofday (&tv, 0); 247 gettimeofday (&tv, 0);
140 return tv.tv_sec + tv.tv_usec * 1e-6; 248 return tv.tv_sec + tv.tv_usec * 1e-6;
141#endif 249#endif
142} 250}
143 251
144static ev_tstamp 252inline ev_tstamp
145get_clock (void) 253get_clock (void)
146{ 254{
147#if EV_USE_MONOTONIC 255#if EV_USE_MONOTONIC
148 if (expect_true (have_monotonic)) 256 if (expect_true (have_monotonic))
149 { 257 {
154#endif 262#endif
155 263
156 return ev_time (); 264 return ev_time ();
157} 265}
158 266
267ev_tstamp
268ev_now (EV_P)
269{
270 return rt_now;
271}
272
159#define array_roundsize(base,n) ((n) | 4 & ~3) 273#define array_roundsize(type,n) ((n) | 4 & ~3)
160 274
161#define array_needsize(base,cur,cnt,init) \ 275#define array_needsize(type,base,cur,cnt,init) \
162 if (expect_false ((cnt) > cur)) \ 276 if (expect_false ((cnt) > cur)) \
163 { \ 277 { \
164 int newcnt = cur; \ 278 int newcnt = cur; \
165 do \ 279 do \
166 { \ 280 { \
167 newcnt = array_roundsize (base, newcnt << 1); \ 281 newcnt = array_roundsize (type, newcnt << 1); \
168 } \ 282 } \
169 while ((cnt) > newcnt); \ 283 while ((cnt) > newcnt); \
170 \ 284 \
171 base = realloc (base, sizeof (*base) * (newcnt)); \ 285 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172 init (base + cur, newcnt - cur); \ 286 init (base + cur, newcnt - cur); \
173 cur = newcnt; \ 287 cur = newcnt; \
174 } 288 }
289
290#define array_slim(type,stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 }
297
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303#define array_free(stem, idx) \
304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175 305
176/*****************************************************************************/ 306/*****************************************************************************/
177
178typedef struct
179{
180 struct ev_watcher_list *head;
181 unsigned char events;
182 unsigned char reify;
183} ANFD;
184
185static ANFD *anfds;
186static int anfdmax;
187 307
188static void 308static void
189anfds_init (ANFD *base, int count) 309anfds_init (ANFD *base, int count)
190{ 310{
191 while (count--) 311 while (count--)
196 316
197 ++base; 317 ++base;
198 } 318 }
199} 319}
200 320
201typedef struct 321void
322ev_feed_event (EV_P_ void *w, int revents)
202{ 323{
203 W w; 324 W w_ = (W)w;
204 int events;
205} ANPENDING;
206 325
207static ANPENDING *pendings [NUMPRI];
208static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210static void
211event (W w, int events)
212{
213 if (w->pending) 326 if (w_->pending)
214 { 327 {
215 pendings [ABSPRI (w)][w->pending - 1].events |= events; 328 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
216 return; 329 return;
217 } 330 }
218 331
219 w->pending = ++pendingcnt [ABSPRI (w)]; 332 w_->pending = ++pendingcnt [ABSPRI (w_)];
220 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 333 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
221 pendings [ABSPRI (w)][w->pending - 1].w = w; 334 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222 pendings [ABSPRI (w)][w->pending - 1].events = events; 335 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223} 336}
224 337
225static void 338static void
226queue_events (W *events, int eventcnt, int type) 339queue_events (EV_P_ W *events, int eventcnt, int type)
227{ 340{
228 int i; 341 int i;
229 342
230 for (i = 0; i < eventcnt; ++i) 343 for (i = 0; i < eventcnt; ++i)
231 event (events [i], type); 344 ev_feed_event (EV_A_ events [i], type);
232} 345}
233 346
234static void 347inline void
235fd_event (int fd, int events) 348fd_event (EV_P_ int fd, int revents)
236{ 349{
237 ANFD *anfd = anfds + fd; 350 ANFD *anfd = anfds + fd;
238 struct ev_io *w; 351 struct ev_io *w;
239 352
240 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 353 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241 { 354 {
242 int ev = w->events & events; 355 int ev = w->events & revents;
243 356
244 if (ev) 357 if (ev)
245 event ((W)w, ev); 358 ev_feed_event (EV_A_ (W)w, ev);
246 } 359 }
360}
361
362void
363ev_feed_fd_event (EV_P_ int fd, int revents)
364{
365 fd_event (EV_A_ fd, revents);
247} 366}
248 367
249/*****************************************************************************/ 368/*****************************************************************************/
250 369
251static int *fdchanges;
252static int fdchangemax, fdchangecnt;
253
254static void 370static void
255fd_reify (void) 371fd_reify (EV_P)
256{ 372{
257 int i; 373 int i;
258 374
259 for (i = 0; i < fdchangecnt; ++i) 375 for (i = 0; i < fdchangecnt; ++i)
260 { 376 {
267 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 383 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268 events |= w->events; 384 events |= w->events;
269 385
270 anfd->reify = 0; 386 anfd->reify = 0;
271 387
272 if (anfd->events != events)
273 {
274 method_modify (fd, anfd->events, events); 388 method_modify (EV_A_ fd, anfd->events, events);
275 anfd->events = events; 389 anfd->events = events;
276 }
277 } 390 }
278 391
279 fdchangecnt = 0; 392 fdchangecnt = 0;
280} 393}
281 394
282static void 395static void
283fd_change (int fd) 396fd_change (EV_P_ int fd)
284{ 397{
285 if (anfds [fd].reify || fdchangecnt < 0) 398 if (anfds [fd].reify)
286 return; 399 return;
287 400
288 anfds [fd].reify = 1; 401 anfds [fd].reify = 1;
289 402
290 ++fdchangecnt; 403 ++fdchangecnt;
291 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 404 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
292 fdchanges [fdchangecnt - 1] = fd; 405 fdchanges [fdchangecnt - 1] = fd;
293} 406}
294 407
295static void 408static void
296fd_kill (int fd) 409fd_kill (EV_P_ int fd)
297{ 410{
298 struct ev_io *w; 411 struct ev_io *w;
299 412
300 while ((w = (struct ev_io *)anfds [fd].head)) 413 while ((w = (struct ev_io *)anfds [fd].head))
301 { 414 {
302 ev_io_stop (w); 415 ev_io_stop (EV_A_ w);
303 event ((W)w, EV_ERROR | EV_READ | EV_WRITE); 416 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304 } 417 }
418}
419
420static int
421fd_valid (int fd)
422{
423#ifdef WIN32
424 return !!win32_get_osfhandle (fd);
425#else
426 return fcntl (fd, F_GETFD) != -1;
427#endif
305} 428}
306 429
307/* called on EBADF to verify fds */ 430/* called on EBADF to verify fds */
308static void 431static void
309fd_ebadf (void) 432fd_ebadf (EV_P)
310{ 433{
311 int fd; 434 int fd;
312 435
313 for (fd = 0; fd < anfdmax; ++fd) 436 for (fd = 0; fd < anfdmax; ++fd)
314 if (anfds [fd].events) 437 if (anfds [fd].events)
315 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 438 if (!fd_valid (fd) == -1 && errno == EBADF)
316 fd_kill (fd); 439 fd_kill (EV_A_ fd);
317} 440}
318 441
319/* called on ENOMEM in select/poll to kill some fds and retry */ 442/* called on ENOMEM in select/poll to kill some fds and retry */
320static void 443static void
321fd_enomem (void) 444fd_enomem (EV_P)
322{ 445{
323 int fd = anfdmax; 446 int fd;
324 447
325 while (fd--) 448 for (fd = anfdmax; fd--; )
326 if (anfds [fd].events) 449 if (anfds [fd].events)
327 { 450 {
328 close (fd);
329 fd_kill (fd); 451 fd_kill (EV_A_ fd);
330 return; 452 return;
331 } 453 }
332} 454}
333 455
456/* usually called after fork if method needs to re-arm all fds from scratch */
457static void
458fd_rearm_all (EV_P)
459{
460 int fd;
461
462 /* this should be highly optimised to not do anything but set a flag */
463 for (fd = 0; fd < anfdmax; ++fd)
464 if (anfds [fd].events)
465 {
466 anfds [fd].events = 0;
467 fd_change (EV_A_ fd);
468 }
469}
470
334/*****************************************************************************/ 471/*****************************************************************************/
335 472
336static struct ev_timer **timers;
337static int timermax, timercnt;
338
339static struct ev_periodic **periodics;
340static int periodicmax, periodiccnt;
341
342static void 473static void
343upheap (WT *timers, int k) 474upheap (WT *heap, int k)
344{ 475{
345 WT w = timers [k]; 476 WT w = heap [k];
346 477
347 while (k && timers [k >> 1]->at > w->at) 478 while (k && heap [k >> 1]->at > w->at)
348 { 479 {
349 timers [k] = timers [k >> 1]; 480 heap [k] = heap [k >> 1];
350 timers [k]->active = k + 1; 481 ((W)heap [k])->active = k + 1;
351 k >>= 1; 482 k >>= 1;
352 } 483 }
353 484
354 timers [k] = w; 485 heap [k] = w;
355 timers [k]->active = k + 1; 486 ((W)heap [k])->active = k + 1;
356 487
357} 488}
358 489
359static void 490static void
360downheap (WT *timers, int N, int k) 491downheap (WT *heap, int N, int k)
361{ 492{
362 WT w = timers [k]; 493 WT w = heap [k];
363 494
364 while (k < (N >> 1)) 495 while (k < (N >> 1))
365 { 496 {
366 int j = k << 1; 497 int j = k << 1;
367 498
368 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 499 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369 ++j; 500 ++j;
370 501
371 if (w->at <= timers [j]->at) 502 if (w->at <= heap [j]->at)
372 break; 503 break;
373 504
374 timers [k] = timers [j]; 505 heap [k] = heap [j];
375 timers [k]->active = k + 1; 506 ((W)heap [k])->active = k + 1;
376 k = j; 507 k = j;
377 } 508 }
378 509
379 timers [k] = w; 510 heap [k] = w;
380 timers [k]->active = k + 1; 511 ((W)heap [k])->active = k + 1;
381} 512}
382 513
383/*****************************************************************************/ 514/*****************************************************************************/
384 515
385typedef struct 516typedef struct
386{ 517{
387 struct ev_watcher_list *head; 518 WL head;
388 sig_atomic_t volatile gotsig; 519 sig_atomic_t volatile gotsig;
389} ANSIG; 520} ANSIG;
390 521
391static ANSIG *signals; 522static ANSIG *signals;
392static int signalmax; 523static int signalmax;
408} 539}
409 540
410static void 541static void
411sighandler (int signum) 542sighandler (int signum)
412{ 543{
544#if WIN32
545 signal (signum, sighandler);
546#endif
547
413 signals [signum - 1].gotsig = 1; 548 signals [signum - 1].gotsig = 1;
414 549
415 if (!gotsig) 550 if (!gotsig)
416 { 551 {
417 int old_errno = errno; 552 int old_errno = errno;
418 gotsig = 1; 553 gotsig = 1;
554#ifdef WIN32
555 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556#else
419 write (sigpipe [1], &signum, 1); 557 write (sigpipe [1], &signum, 1);
558#endif
420 errno = old_errno; 559 errno = old_errno;
421 } 560 }
422} 561}
423 562
563void
564ev_feed_signal_event (EV_P_ int signum)
565{
566#if EV_MULTIPLICITY
567 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
568#endif
569
570 --signum;
571
572 if (signum < 0 || signum >= signalmax)
573 return;
574
575 signals [signum].gotsig = 0;
576
577 for (w = signals [signum].head; w; w = w->next)
578 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579}
580
424static void 581static void
425sigcb (struct ev_io *iow, int revents) 582sigcb (EV_P_ struct ev_io *iow, int revents)
426{ 583{
427 struct ev_watcher_list *w; 584 WL w;
428 int signum; 585 int signum;
429 586
587#ifdef WIN32
588 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589#else
430 read (sigpipe [0], &revents, 1); 590 read (sigpipe [0], &revents, 1);
591#endif
431 gotsig = 0; 592 gotsig = 0;
432 593
433 for (signum = signalmax; signum--; ) 594 for (signum = signalmax; signum--; )
434 if (signals [signum].gotsig) 595 if (signals [signum].gotsig)
435 { 596 sigevent (EV_A_ signum + 1);
436 signals [signum].gotsig = 0;
437
438 for (w = signals [signum].head; w; w = w->next)
439 event ((W)w, EV_SIGNAL);
440 }
441} 597}
442 598
443static void 599static void
444siginit (void) 600siginit (EV_P)
445{ 601{
446#ifndef WIN32 602#ifndef WIN32
447 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 603 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); 604 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449 605
451 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 607 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 608 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453#endif 609#endif
454 610
455 ev_io_set (&sigev, sigpipe [0], EV_READ); 611 ev_io_set (&sigev, sigpipe [0], EV_READ);
456 ev_io_start (&sigev); 612 ev_io_start (EV_A_ &sigev);
613 ev_unref (EV_A); /* child watcher should not keep loop alive */
457} 614}
458 615
459/*****************************************************************************/ 616/*****************************************************************************/
460 617
461static struct ev_idle **idles;
462static int idlemax, idlecnt;
463
464static struct ev_prepare **prepares;
465static int preparemax, preparecnt;
466
467static struct ev_check **checks;
468static int checkmax, checkcnt;
469
470/*****************************************************************************/
471
472static struct ev_child *childs [PID_HASHSIZE]; 618static struct ev_child *childs [PID_HASHSIZE];
619
620#ifndef WIN32
621
473static struct ev_signal childev; 622static struct ev_signal childev;
474
475#ifndef WIN32
476 623
477#ifndef WCONTINUED 624#ifndef WCONTINUED
478# define WCONTINUED 0 625# define WCONTINUED 0
479#endif 626#endif
480 627
481static void 628static void
482child_reap (struct ev_signal *sw, int chain, int pid, int status) 629child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483{ 630{
484 struct ev_child *w; 631 struct ev_child *w;
485 632
486 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 633 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
487 if (w->pid == pid || !w->pid) 634 if (w->pid == pid || !w->pid)
488 { 635 {
489 w->priority = sw->priority; /* need to do it *now* */ 636 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
490 w->rpid = pid; 637 w->rpid = pid;
491 w->rstatus = status; 638 w->rstatus = status;
492 event ((W)w, EV_CHILD); 639 ev_feed_event (EV_A_ (W)w, EV_CHILD);
493 } 640 }
494} 641}
495 642
496static void 643static void
497childcb (struct ev_signal *sw, int revents) 644childcb (EV_P_ struct ev_signal *sw, int revents)
498{ 645{
499 int pid, status; 646 int pid, status;
500 647
501 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 648 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502 { 649 {
503 /* make sure we are called again until all childs have been reaped */ 650 /* make sure we are called again until all childs have been reaped */
504 event ((W)sw, EV_SIGNAL); 651 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
505 652
506 child_reap (sw, pid, pid, status); 653 child_reap (EV_A_ sw, pid, pid, status);
507 child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 654 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
508 } 655 }
509} 656}
510 657
511#endif 658#endif
512 659
537 return EV_VERSION_MINOR; 684 return EV_VERSION_MINOR;
538} 685}
539 686
540/* return true if we are running with elevated privileges and should ignore env variables */ 687/* return true if we are running with elevated privileges and should ignore env variables */
541static int 688static int
542enable_secure () 689enable_secure (void)
543{ 690{
544#ifdef WIN32 691#ifdef WIN32
545 return 0; 692 return 0;
546#else 693#else
547 return getuid () != geteuid () 694 return getuid () != geteuid ()
548 || getgid () != getegid (); 695 || getgid () != getegid ();
549#endif 696#endif
550} 697}
551 698
552int ev_init (int methods) 699int
700ev_method (EV_P)
553{ 701{
702 return method;
703}
704
705static void
706loop_init (EV_P_ int methods)
707{
554 if (!ev_method) 708 if (!method)
555 { 709 {
556#if EV_USE_MONOTONIC 710#if EV_USE_MONOTONIC
557 { 711 {
558 struct timespec ts; 712 struct timespec ts;
559 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 713 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560 have_monotonic = 1; 714 have_monotonic = 1;
561 } 715 }
562#endif 716#endif
563 717
564 ev_now = ev_time (); 718 rt_now = ev_time ();
565 now = get_clock (); 719 mn_now = get_clock ();
566 now_floor = now; 720 now_floor = mn_now;
567 diff = ev_now - now; 721 rtmn_diff = rt_now - mn_now;
568
569 if (pipe (sigpipe))
570 return 0;
571 722
572 if (methods == EVMETHOD_AUTO) 723 if (methods == EVMETHOD_AUTO)
573 if (!enable_secure () && getenv ("LIBEV_METHODS")) 724 if (!enable_secure () && getenv ("LIBEV_METHODS"))
574 methods = atoi (getenv ("LIBEV_METHODS")); 725 methods = atoi (getenv ("LIBEV_METHODS"));
575 else 726 else
576 methods = EVMETHOD_ANY; 727 methods = EVMETHOD_ANY;
577 728
578 ev_method = 0; 729 method = 0;
730#if EV_USE_WIN32
731 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
732#endif
579#if EV_USE_KQUEUE 733#if EV_USE_KQUEUE
580 if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); 734 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
581#endif 735#endif
582#if EV_USE_EPOLL 736#if EV_USE_EPOLL
583 if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); 737 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
584#endif 738#endif
585#if EV_USE_POLL 739#if EV_USE_POLL
586 if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); 740 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
587#endif 741#endif
588#if EV_USE_SELECT 742#if EV_USE_SELECT
589 if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); 743 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
590#endif 744#endif
591 745
746 ev_watcher_init (&sigev, sigcb);
747 ev_set_priority (&sigev, EV_MAXPRI);
748 }
749}
750
751void
752loop_destroy (EV_P)
753{
754 int i;
755
756#if EV_USE_WIN32
757 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
758#endif
759#if EV_USE_KQUEUE
760 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
761#endif
762#if EV_USE_EPOLL
763 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
764#endif
765#if EV_USE_POLL
766 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
767#endif
768#if EV_USE_SELECT
769 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
770#endif
771
772 for (i = NUMPRI; i--; )
773 array_free (pending, [i]);
774
775 /* have to use the microsoft-never-gets-it-right macro */
776 array_free_microshit (fdchange);
777 array_free_microshit (timer);
778 array_free_microshit (periodic);
779 array_free_microshit (idle);
780 array_free_microshit (prepare);
781 array_free_microshit (check);
782
783 method = 0;
784}
785
786static void
787loop_fork (EV_P)
788{
789#if EV_USE_EPOLL
790 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
791#endif
792#if EV_USE_KQUEUE
793 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
794#endif
795
796 if (ev_is_active (&sigev))
797 {
798 /* default loop */
799
800 ev_ref (EV_A);
801 ev_io_stop (EV_A_ &sigev);
802 close (sigpipe [0]);
803 close (sigpipe [1]);
804
805 while (pipe (sigpipe))
806 syserr ("(libev) error creating pipe");
807
808 siginit (EV_A);
809 }
810
811 postfork = 0;
812}
813
814#if EV_MULTIPLICITY
815struct ev_loop *
816ev_loop_new (int methods)
817{
818 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
819
820 memset (loop, 0, sizeof (struct ev_loop));
821
822 loop_init (EV_A_ methods);
823
824 if (ev_method (EV_A))
825 return loop;
826
827 return 0;
828}
829
830void
831ev_loop_destroy (EV_P)
832{
833 loop_destroy (EV_A);
834 ev_free (loop);
835}
836
837void
838ev_loop_fork (EV_P)
839{
840 postfork = 1;
841}
842
843#endif
844
845#if EV_MULTIPLICITY
846struct ev_loop default_loop_struct;
847static struct ev_loop *default_loop;
848
849struct ev_loop *
850#else
851static int default_loop;
852
853int
854#endif
855ev_default_loop (int methods)
856{
857 if (sigpipe [0] == sigpipe [1])
858 if (pipe (sigpipe))
859 return 0;
860
861 if (!default_loop)
862 {
863#if EV_MULTIPLICITY
864 struct ev_loop *loop = default_loop = &default_loop_struct;
865#else
866 default_loop = 1;
867#endif
868
869 loop_init (EV_A_ methods);
870
592 if (ev_method) 871 if (ev_method (EV_A))
593 { 872 {
594 ev_watcher_init (&sigev, sigcb);
595 ev_set_priority (&sigev, EV_MAXPRI);
596 siginit (); 873 siginit (EV_A);
597 874
598#ifndef WIN32 875#ifndef WIN32
599 ev_signal_init (&childev, childcb, SIGCHLD); 876 ev_signal_init (&childev, childcb, SIGCHLD);
600 ev_set_priority (&childev, EV_MAXPRI); 877 ev_set_priority (&childev, EV_MAXPRI);
601 ev_signal_start (&childev); 878 ev_signal_start (EV_A_ &childev);
879 ev_unref (EV_A); /* child watcher should not keep loop alive */
602#endif 880#endif
603 } 881 }
882 else
883 default_loop = 0;
604 } 884 }
605 885
606 return ev_method; 886 return default_loop;
887}
888
889void
890ev_default_destroy (void)
891{
892#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop;
894#endif
895
896#ifndef WIN32
897 ev_ref (EV_A); /* child watcher */
898 ev_signal_stop (EV_A_ &childev);
899#endif
900
901 ev_ref (EV_A); /* signal watcher */
902 ev_io_stop (EV_A_ &sigev);
903
904 close (sigpipe [0]); sigpipe [0] = 0;
905 close (sigpipe [1]); sigpipe [1] = 0;
906
907 loop_destroy (EV_A);
908}
909
910void
911ev_default_fork (void)
912{
913#if EV_MULTIPLICITY
914 struct ev_loop *loop = default_loop;
915#endif
916
917 if (method)
918 postfork = 1;
607} 919}
608 920
609/*****************************************************************************/ 921/*****************************************************************************/
610 922
611void
612ev_fork_prepare (void)
613{
614 /* nop */
615}
616
617void
618ev_fork_parent (void)
619{
620 /* nop */
621}
622
623void
624ev_fork_child (void)
625{
626#if EV_USE_EPOLL
627 if (ev_method == EVMETHOD_EPOLL)
628 epoll_postfork_child ();
629#endif
630
631 ev_io_stop (&sigev);
632 close (sigpipe [0]);
633 close (sigpipe [1]);
634 pipe (sigpipe);
635 siginit ();
636}
637
638/*****************************************************************************/
639
640static void 923static int
924any_pending (EV_P)
925{
926 int pri;
927
928 for (pri = NUMPRI; pri--; )
929 if (pendingcnt [pri])
930 return 1;
931
932 return 0;
933}
934
935static void
641call_pending (void) 936call_pending (EV_P)
642{ 937{
643 int pri; 938 int pri;
644 939
645 for (pri = NUMPRI; pri--; ) 940 for (pri = NUMPRI; pri--; )
646 while (pendingcnt [pri]) 941 while (pendingcnt [pri])
648 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 943 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649 944
650 if (p->w) 945 if (p->w)
651 { 946 {
652 p->w->pending = 0; 947 p->w->pending = 0;
653 p->w->cb (p->w, p->events); 948 p->w->cb (EV_A_ p->w, p->events);
654 } 949 }
655 } 950 }
656} 951}
657 952
658static void 953static void
659timers_reify (void) 954timers_reify (EV_P)
660{ 955{
661 while (timercnt && timers [0]->at <= now) 956 while (timercnt && ((WT)timers [0])->at <= mn_now)
662 { 957 {
663 struct ev_timer *w = timers [0]; 958 struct ev_timer *w = timers [0];
959
960 assert (("inactive timer on timer heap detected", ev_is_active (w)));
664 961
665 /* first reschedule or stop timer */ 962 /* first reschedule or stop timer */
666 if (w->repeat) 963 if (w->repeat)
667 { 964 {
668 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 965 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
669 w->at = now + w->repeat; 966 ((WT)w)->at = mn_now + w->repeat;
670 downheap ((WT *)timers, timercnt, 0); 967 downheap ((WT *)timers, timercnt, 0);
671 } 968 }
672 else 969 else
673 ev_timer_stop (w); /* nonrepeating: stop timer */ 970 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674 971
675 event ((W)w, EV_TIMEOUT); 972 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
676 } 973 }
677} 974}
678 975
679static void 976static void
680periodics_reify (void) 977periodics_reify (EV_P)
681{ 978{
682 while (periodiccnt && periodics [0]->at <= ev_now) 979 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
683 { 980 {
684 struct ev_periodic *w = periodics [0]; 981 struct ev_periodic *w = periodics [0];
685 982
983 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984
686 /* first reschedule or stop timer */ 985 /* first reschedule or stop timer */
687 if (w->interval) 986 if (w->reschedule_cb)
688 { 987 {
988 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
989
990 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
991 downheap ((WT *)periodics, periodiccnt, 0);
992 }
993 else if (w->interval)
994 {
689 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 995 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 996 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
691 downheap ((WT *)periodics, periodiccnt, 0); 997 downheap ((WT *)periodics, periodiccnt, 0);
692 } 998 }
693 else 999 else
694 ev_periodic_stop (w); /* nonrepeating: stop timer */ 1000 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695 1001
696 event ((W)w, EV_PERIODIC); 1002 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
697 } 1003 }
698} 1004}
699 1005
700static void 1006static void
701periodics_reschedule (ev_tstamp diff) 1007periodics_reschedule (EV_P)
702{ 1008{
703 int i; 1009 int i;
704 1010
705 /* adjust periodics after time jump */ 1011 /* adjust periodics after time jump */
706 for (i = 0; i < periodiccnt; ++i) 1012 for (i = 0; i < periodiccnt; ++i)
707 { 1013 {
708 struct ev_periodic *w = periodics [i]; 1014 struct ev_periodic *w = periodics [i];
709 1015
1016 if (w->reschedule_cb)
1017 ((WT)w)->at = w->reschedule_cb (w, rt_now);
710 if (w->interval) 1018 else if (w->interval)
711 {
712 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1019 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
713
714 if (fabs (diff) >= 1e-4)
715 {
716 ev_periodic_stop (w);
717 ev_periodic_start (w);
718
719 i = 0; /* restart loop, inefficient, but time jumps should be rare */
720 }
721 }
722 } 1020 }
723}
724 1021
725static int 1022 /* now rebuild the heap */
1023 for (i = periodiccnt >> 1; i--; )
1024 downheap ((WT *)periodics, periodiccnt, i);
1025}
1026
1027inline int
726time_update_monotonic (void) 1028time_update_monotonic (EV_P)
727{ 1029{
728 now = get_clock (); 1030 mn_now = get_clock ();
729 1031
730 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) 1032 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731 { 1033 {
732 ev_now = now + diff; 1034 rt_now = rtmn_diff + mn_now;
733 return 0; 1035 return 0;
734 } 1036 }
735 else 1037 else
736 { 1038 {
737 now_floor = now; 1039 now_floor = mn_now;
738 ev_now = ev_time (); 1040 rt_now = ev_time ();
739 return 1; 1041 return 1;
740 } 1042 }
741} 1043}
742 1044
743static void 1045static void
744time_update (void) 1046time_update (EV_P)
745{ 1047{
746 int i; 1048 int i;
747 1049
748#if EV_USE_MONOTONIC 1050#if EV_USE_MONOTONIC
749 if (expect_true (have_monotonic)) 1051 if (expect_true (have_monotonic))
750 { 1052 {
751 if (time_update_monotonic ()) 1053 if (time_update_monotonic (EV_A))
752 { 1054 {
753 ev_tstamp odiff = diff; 1055 ev_tstamp odiff = rtmn_diff;
754 1056
755 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1057 for (i = 4; --i; ) /* loop a few times, before making important decisions */
756 { 1058 {
757 diff = ev_now - now; 1059 rtmn_diff = rt_now - mn_now;
758 1060
759 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1061 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760 return; /* all is well */ 1062 return; /* all is well */
761 1063
762 ev_now = ev_time (); 1064 rt_now = ev_time ();
763 now = get_clock (); 1065 mn_now = get_clock ();
764 now_floor = now; 1066 now_floor = mn_now;
765 } 1067 }
766 1068
767 periodics_reschedule (diff - odiff); 1069 periodics_reschedule (EV_A);
768 /* no timer adjustment, as the monotonic clock doesn't jump */ 1070 /* no timer adjustment, as the monotonic clock doesn't jump */
1071 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769 } 1072 }
770 } 1073 }
771 else 1074 else
772#endif 1075#endif
773 { 1076 {
774 ev_now = ev_time (); 1077 rt_now = ev_time ();
775 1078
776 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1079 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777 { 1080 {
778 periodics_reschedule (ev_now - now); 1081 periodics_reschedule (EV_A);
779 1082
780 /* adjust timers. this is easy, as the offset is the same for all */ 1083 /* adjust timers. this is easy, as the offset is the same for all */
781 for (i = 0; i < timercnt; ++i) 1084 for (i = 0; i < timercnt; ++i)
782 timers [i]->at += diff; 1085 ((WT)timers [i])->at += rt_now - mn_now;
783 } 1086 }
784 1087
785 now = ev_now; 1088 mn_now = rt_now;
786 } 1089 }
787} 1090}
788 1091
789int ev_loop_done; 1092void
1093ev_ref (EV_P)
1094{
1095 ++activecnt;
1096}
790 1097
1098void
1099ev_unref (EV_P)
1100{
1101 --activecnt;
1102}
1103
1104static int loop_done;
1105
1106void
791void ev_loop (int flags) 1107ev_loop (EV_P_ int flags)
792{ 1108{
793 double block; 1109 double block;
794 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1110 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
795 1111
796 do 1112 do
797 { 1113 {
798 /* queue check watchers (and execute them) */ 1114 /* queue check watchers (and execute them) */
799 if (expect_false (preparecnt)) 1115 if (expect_false (preparecnt))
800 { 1116 {
801 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1117 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802 call_pending (); 1118 call_pending (EV_A);
803 } 1119 }
804 1120
1121 /* we might have forked, so reify kernel state if necessary */
1122 if (expect_false (postfork))
1123 loop_fork (EV_A);
1124
805 /* update fd-related kernel structures */ 1125 /* update fd-related kernel structures */
806 fd_reify (); 1126 fd_reify (EV_A);
807 1127
808 /* calculate blocking time */ 1128 /* calculate blocking time */
809 1129
810 /* we only need this for !monotonic clockor timers, but as we basically 1130 /* we only need this for !monotonic clock or timers, but as we basically
811 always have timers, we just calculate it always */ 1131 always have timers, we just calculate it always */
812#if EV_USE_MONOTONIC 1132#if EV_USE_MONOTONIC
813 if (expect_true (have_monotonic)) 1133 if (expect_true (have_monotonic))
814 time_update_monotonic (); 1134 time_update_monotonic (EV_A);
815 else 1135 else
816#endif 1136#endif
817 { 1137 {
818 ev_now = ev_time (); 1138 rt_now = ev_time ();
819 now = ev_now; 1139 mn_now = rt_now;
820 } 1140 }
821 1141
822 if (flags & EVLOOP_NONBLOCK || idlecnt) 1142 if (flags & EVLOOP_NONBLOCK || idlecnt)
823 block = 0.; 1143 block = 0.;
824 else 1144 else
825 { 1145 {
826 block = MAX_BLOCKTIME; 1146 block = MAX_BLOCKTIME;
827 1147
828 if (timercnt) 1148 if (timercnt)
829 { 1149 {
830 ev_tstamp to = timers [0]->at - now + method_fudge; 1150 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
831 if (block > to) block = to; 1151 if (block > to) block = to;
832 } 1152 }
833 1153
834 if (periodiccnt) 1154 if (periodiccnt)
835 { 1155 {
836 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1156 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
837 if (block > to) block = to; 1157 if (block > to) block = to;
838 } 1158 }
839 1159
840 if (block < 0.) block = 0.; 1160 if (block < 0.) block = 0.;
841 } 1161 }
842 1162
843 method_poll (block); 1163 method_poll (EV_A_ block);
844 1164
845 /* update ev_now, do magic */ 1165 /* update rt_now, do magic */
846 time_update (); 1166 time_update (EV_A);
847 1167
848 /* queue pending timers and reschedule them */ 1168 /* queue pending timers and reschedule them */
849 timers_reify (); /* relative timers called last */ 1169 timers_reify (EV_A); /* relative timers called last */
850 periodics_reify (); /* absolute timers called first */ 1170 periodics_reify (EV_A); /* absolute timers called first */
851 1171
852 /* queue idle watchers unless io or timers are pending */ 1172 /* queue idle watchers unless io or timers are pending */
853 if (!pendingcnt) 1173 if (idlecnt && !any_pending (EV_A))
854 queue_events ((W *)idles, idlecnt, EV_IDLE); 1174 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855 1175
856 /* queue check watchers, to be executed first */ 1176 /* queue check watchers, to be executed first */
857 if (checkcnt) 1177 if (checkcnt)
858 queue_events ((W *)checks, checkcnt, EV_CHECK); 1178 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859 1179
860 call_pending (); 1180 call_pending (EV_A);
861 } 1181 }
862 while (!ev_loop_done); 1182 while (activecnt && !loop_done);
863 1183
864 if (ev_loop_done != 2) 1184 if (loop_done != 2)
865 ev_loop_done = 0; 1185 loop_done = 0;
1186}
1187
1188void
1189ev_unloop (EV_P_ int how)
1190{
1191 loop_done = how;
866} 1192}
867 1193
868/*****************************************************************************/ 1194/*****************************************************************************/
869 1195
870static void 1196inline void
871wlist_add (WL *head, WL elem) 1197wlist_add (WL *head, WL elem)
872{ 1198{
873 elem->next = *head; 1199 elem->next = *head;
874 *head = elem; 1200 *head = elem;
875} 1201}
876 1202
877static void 1203inline void
878wlist_del (WL *head, WL elem) 1204wlist_del (WL *head, WL elem)
879{ 1205{
880 while (*head) 1206 while (*head)
881 { 1207 {
882 if (*head == elem) 1208 if (*head == elem)
887 1213
888 head = &(*head)->next; 1214 head = &(*head)->next;
889 } 1215 }
890} 1216}
891 1217
892static void 1218inline void
893ev_clear_pending (W w) 1219ev_clear_pending (EV_P_ W w)
894{ 1220{
895 if (w->pending) 1221 if (w->pending)
896 { 1222 {
897 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1223 pendings [ABSPRI (w)][w->pending - 1].w = 0;
898 w->pending = 0; 1224 w->pending = 0;
899 } 1225 }
900} 1226}
901 1227
902static void 1228inline void
903ev_start (W w, int active) 1229ev_start (EV_P_ W w, int active)
904{ 1230{
905 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1231 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1232 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907 1233
908 w->active = active; 1234 w->active = active;
1235 ev_ref (EV_A);
909} 1236}
910 1237
911static void 1238inline void
912ev_stop (W w) 1239ev_stop (EV_P_ W w)
913{ 1240{
1241 ev_unref (EV_A);
914 w->active = 0; 1242 w->active = 0;
915} 1243}
916 1244
917/*****************************************************************************/ 1245/*****************************************************************************/
918 1246
919void 1247void
920ev_io_start (struct ev_io *w) 1248ev_io_start (EV_P_ struct ev_io *w)
921{ 1249{
922 int fd = w->fd; 1250 int fd = w->fd;
923 1251
924 if (ev_is_active (w)) 1252 if (ev_is_active (w))
925 return; 1253 return;
926 1254
927 assert (("ev_io_start called with negative fd", fd >= 0)); 1255 assert (("ev_io_start called with negative fd", fd >= 0));
928 1256
929 ev_start ((W)w, 1); 1257 ev_start (EV_A_ (W)w, 1);
930 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1258 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
931 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1259 wlist_add ((WL *)&anfds[fd].head, (WL)w);
932 1260
933 fd_change (fd); 1261 fd_change (EV_A_ fd);
934} 1262}
935 1263
936void 1264void
937ev_io_stop (struct ev_io *w) 1265ev_io_stop (EV_P_ struct ev_io *w)
938{ 1266{
939 ev_clear_pending ((W)w); 1267 ev_clear_pending (EV_A_ (W)w);
940 if (!ev_is_active (w)) 1268 if (!ev_is_active (w))
941 return; 1269 return;
942 1270
943 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1271 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944 ev_stop ((W)w); 1272 ev_stop (EV_A_ (W)w);
945 1273
946 fd_change (w->fd); 1274 fd_change (EV_A_ w->fd);
947} 1275}
948 1276
949void 1277void
950ev_timer_start (struct ev_timer *w) 1278ev_timer_start (EV_P_ struct ev_timer *w)
951{ 1279{
952 if (ev_is_active (w)) 1280 if (ev_is_active (w))
953 return; 1281 return;
954 1282
955 w->at += now; 1283 ((WT)w)->at += mn_now;
956 1284
957 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1285 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958 1286
959 ev_start ((W)w, ++timercnt); 1287 ev_start (EV_A_ (W)w, ++timercnt);
960 array_needsize (timers, timermax, timercnt, ); 1288 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
961 timers [timercnt - 1] = w; 1289 timers [timercnt - 1] = w;
962 upheap ((WT *)timers, timercnt - 1); 1290 upheap ((WT *)timers, timercnt - 1);
963}
964 1291
1292 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293}
1294
965void 1295void
966ev_timer_stop (struct ev_timer *w) 1296ev_timer_stop (EV_P_ struct ev_timer *w)
967{ 1297{
968 ev_clear_pending ((W)w); 1298 ev_clear_pending (EV_A_ (W)w);
969 if (!ev_is_active (w)) 1299 if (!ev_is_active (w))
970 return; 1300 return;
971 1301
1302 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1303
972 if (w->active < timercnt--) 1304 if (((W)w)->active < timercnt--)
973 { 1305 {
974 timers [w->active - 1] = timers [timercnt]; 1306 timers [((W)w)->active - 1] = timers [timercnt];
975 downheap ((WT *)timers, timercnt, w->active - 1); 1307 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976 } 1308 }
977 1309
978 w->at = w->repeat; 1310 ((WT)w)->at = w->repeat;
979 1311
980 ev_stop ((W)w); 1312 ev_stop (EV_A_ (W)w);
981} 1313}
982 1314
983void 1315void
984ev_timer_again (struct ev_timer *w) 1316ev_timer_again (EV_P_ struct ev_timer *w)
985{ 1317{
986 if (ev_is_active (w)) 1318 if (ev_is_active (w))
987 { 1319 {
988 if (w->repeat) 1320 if (w->repeat)
989 { 1321 {
990 w->at = now + w->repeat; 1322 ((WT)w)->at = mn_now + w->repeat;
991 downheap ((WT *)timers, timercnt, w->active - 1); 1323 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992 } 1324 }
993 else 1325 else
994 ev_timer_stop (w); 1326 ev_timer_stop (EV_A_ w);
995 } 1327 }
996 else if (w->repeat) 1328 else if (w->repeat)
997 ev_timer_start (w); 1329 ev_timer_start (EV_A_ w);
998} 1330}
999 1331
1000void 1332void
1001ev_periodic_start (struct ev_periodic *w) 1333ev_periodic_start (EV_P_ struct ev_periodic *w)
1002{ 1334{
1003 if (ev_is_active (w)) 1335 if (ev_is_active (w))
1004 return; 1336 return;
1005 1337
1338 if (w->reschedule_cb)
1339 ((WT)w)->at = w->reschedule_cb (w, rt_now);
1340 else if (w->interval)
1341 {
1006 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1342 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007
1008 /* this formula differs from the one in periodic_reify because we do not always round up */ 1343 /* this formula differs from the one in periodic_reify because we do not always round up */
1009 if (w->interval)
1010 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1344 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1345 }
1011 1346
1012 ev_start ((W)w, ++periodiccnt); 1347 ev_start (EV_A_ (W)w, ++periodiccnt);
1013 array_needsize (periodics, periodicmax, periodiccnt, ); 1348 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1014 periodics [periodiccnt - 1] = w; 1349 periodics [periodiccnt - 1] = w;
1015 upheap ((WT *)periodics, periodiccnt - 1); 1350 upheap ((WT *)periodics, periodiccnt - 1);
1016}
1017 1351
1352 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353}
1354
1018void 1355void
1019ev_periodic_stop (struct ev_periodic *w) 1356ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020{ 1357{
1021 ev_clear_pending ((W)w); 1358 ev_clear_pending (EV_A_ (W)w);
1022 if (!ev_is_active (w)) 1359 if (!ev_is_active (w))
1023 return; 1360 return;
1024 1361
1362 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363
1025 if (w->active < periodiccnt--) 1364 if (((W)w)->active < periodiccnt--)
1026 { 1365 {
1027 periodics [w->active - 1] = periodics [periodiccnt]; 1366 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1367 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029 } 1368 }
1030 1369
1031 ev_stop ((W)w); 1370 ev_stop (EV_A_ (W)w);
1371}
1372
1373void
1374ev_periodic_again (EV_P_ struct ev_periodic *w)
1375{
1376 ev_periodic_stop (EV_A_ w);
1377 ev_periodic_start (EV_A_ w);
1378}
1379
1380void
1381ev_idle_start (EV_P_ struct ev_idle *w)
1382{
1383 if (ev_is_active (w))
1384 return;
1385
1386 ev_start (EV_A_ (W)w, ++idlecnt);
1387 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1388 idles [idlecnt - 1] = w;
1389}
1390
1391void
1392ev_idle_stop (EV_P_ struct ev_idle *w)
1393{
1394 ev_clear_pending (EV_A_ (W)w);
1395 if (ev_is_active (w))
1396 return;
1397
1398 idles [((W)w)->active - 1] = idles [--idlecnt];
1399 ev_stop (EV_A_ (W)w);
1400}
1401
1402void
1403ev_prepare_start (EV_P_ struct ev_prepare *w)
1404{
1405 if (ev_is_active (w))
1406 return;
1407
1408 ev_start (EV_A_ (W)w, ++preparecnt);
1409 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1410 prepares [preparecnt - 1] = w;
1411}
1412
1413void
1414ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415{
1416 ev_clear_pending (EV_A_ (W)w);
1417 if (ev_is_active (w))
1418 return;
1419
1420 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421 ev_stop (EV_A_ (W)w);
1422}
1423
1424void
1425ev_check_start (EV_P_ struct ev_check *w)
1426{
1427 if (ev_is_active (w))
1428 return;
1429
1430 ev_start (EV_A_ (W)w, ++checkcnt);
1431 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1432 checks [checkcnt - 1] = w;
1433}
1434
1435void
1436ev_check_stop (EV_P_ struct ev_check *w)
1437{
1438 ev_clear_pending (EV_A_ (W)w);
1439 if (ev_is_active (w))
1440 return;
1441
1442 checks [((W)w)->active - 1] = checks [--checkcnt];
1443 ev_stop (EV_A_ (W)w);
1032} 1444}
1033 1445
1034#ifndef SA_RESTART 1446#ifndef SA_RESTART
1035# define SA_RESTART 0 1447# define SA_RESTART 0
1036#endif 1448#endif
1037 1449
1038void 1450void
1039ev_signal_start (struct ev_signal *w) 1451ev_signal_start (EV_P_ struct ev_signal *w)
1040{ 1452{
1453#if EV_MULTIPLICITY
1454 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1455#endif
1041 if (ev_is_active (w)) 1456 if (ev_is_active (w))
1042 return; 1457 return;
1043 1458
1044 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1459 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045 1460
1046 ev_start ((W)w, 1); 1461 ev_start (EV_A_ (W)w, 1);
1047 array_needsize (signals, signalmax, w->signum, signals_init); 1462 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1048 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1463 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049 1464
1050 if (!w->next) 1465 if (!((WL)w)->next)
1051 { 1466 {
1467#if WIN32
1468 signal (w->signum, sighandler);
1469#else
1052 struct sigaction sa; 1470 struct sigaction sa;
1053 sa.sa_handler = sighandler; 1471 sa.sa_handler = sighandler;
1054 sigfillset (&sa.sa_mask); 1472 sigfillset (&sa.sa_mask);
1055 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1473 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056 sigaction (w->signum, &sa, 0); 1474 sigaction (w->signum, &sa, 0);
1475#endif
1057 } 1476 }
1058} 1477}
1059 1478
1060void 1479void
1061ev_signal_stop (struct ev_signal *w) 1480ev_signal_stop (EV_P_ struct ev_signal *w)
1062{ 1481{
1063 ev_clear_pending ((W)w); 1482 ev_clear_pending (EV_A_ (W)w);
1064 if (!ev_is_active (w)) 1483 if (!ev_is_active (w))
1065 return; 1484 return;
1066 1485
1067 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1486 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068 ev_stop ((W)w); 1487 ev_stop (EV_A_ (W)w);
1069 1488
1070 if (!signals [w->signum - 1].head) 1489 if (!signals [w->signum - 1].head)
1071 signal (w->signum, SIG_DFL); 1490 signal (w->signum, SIG_DFL);
1072} 1491}
1073 1492
1074void 1493void
1075ev_idle_start (struct ev_idle *w) 1494ev_child_start (EV_P_ struct ev_child *w)
1076{ 1495{
1496#if EV_MULTIPLICITY
1497 assert (("child watchers are only supported in the default loop", loop == default_loop));
1498#endif
1077 if (ev_is_active (w)) 1499 if (ev_is_active (w))
1078 return; 1500 return;
1079 1501
1080 ev_start ((W)w, ++idlecnt); 1502 ev_start (EV_A_ (W)w, 1);
1081 array_needsize (idles, idlemax, idlecnt, ); 1503 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1082 idles [idlecnt - 1] = w;
1083} 1504}
1084 1505
1085void 1506void
1086ev_idle_stop (struct ev_idle *w) 1507ev_child_stop (EV_P_ struct ev_child *w)
1087{ 1508{
1088 ev_clear_pending ((W)w); 1509 ev_clear_pending (EV_A_ (W)w);
1089 if (ev_is_active (w)) 1510 if (ev_is_active (w))
1090 return; 1511 return;
1091 1512
1092 idles [w->active - 1] = idles [--idlecnt];
1093 ev_stop ((W)w);
1094}
1095
1096void
1097ev_prepare_start (struct ev_prepare *w)
1098{
1099 if (ev_is_active (w))
1100 return;
1101
1102 ev_start ((W)w, ++preparecnt);
1103 array_needsize (prepares, preparemax, preparecnt, );
1104 prepares [preparecnt - 1] = w;
1105}
1106
1107void
1108ev_prepare_stop (struct ev_prepare *w)
1109{
1110 ev_clear_pending ((W)w);
1111 if (ev_is_active (w))
1112 return;
1113
1114 prepares [w->active - 1] = prepares [--preparecnt];
1115 ev_stop ((W)w);
1116}
1117
1118void
1119ev_check_start (struct ev_check *w)
1120{
1121 if (ev_is_active (w))
1122 return;
1123
1124 ev_start ((W)w, ++checkcnt);
1125 array_needsize (checks, checkmax, checkcnt, );
1126 checks [checkcnt - 1] = w;
1127}
1128
1129void
1130ev_check_stop (struct ev_check *w)
1131{
1132 ev_clear_pending ((W)w);
1133 if (ev_is_active (w))
1134 return;
1135
1136 checks [w->active - 1] = checks [--checkcnt];
1137 ev_stop ((W)w);
1138}
1139
1140void
1141ev_child_start (struct ev_child *w)
1142{
1143 if (ev_is_active (w))
1144 return;
1145
1146 ev_start ((W)w, 1);
1147 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148}
1149
1150void
1151ev_child_stop (struct ev_child *w)
1152{
1153 ev_clear_pending ((W)w);
1154 if (ev_is_active (w))
1155 return;
1156
1157 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1513 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158 ev_stop ((W)w); 1514 ev_stop (EV_A_ (W)w);
1159} 1515}
1160 1516
1161/*****************************************************************************/ 1517/*****************************************************************************/
1162 1518
1163struct ev_once 1519struct ev_once
1167 void (*cb)(int revents, void *arg); 1523 void (*cb)(int revents, void *arg);
1168 void *arg; 1524 void *arg;
1169}; 1525};
1170 1526
1171static void 1527static void
1172once_cb (struct ev_once *once, int revents) 1528once_cb (EV_P_ struct ev_once *once, int revents)
1173{ 1529{
1174 void (*cb)(int revents, void *arg) = once->cb; 1530 void (*cb)(int revents, void *arg) = once->cb;
1175 void *arg = once->arg; 1531 void *arg = once->arg;
1176 1532
1177 ev_io_stop (&once->io); 1533 ev_io_stop (EV_A_ &once->io);
1178 ev_timer_stop (&once->to); 1534 ev_timer_stop (EV_A_ &once->to);
1179 free (once); 1535 ev_free (once);
1180 1536
1181 cb (revents, arg); 1537 cb (revents, arg);
1182} 1538}
1183 1539
1184static void 1540static void
1185once_cb_io (struct ev_io *w, int revents) 1541once_cb_io (EV_P_ struct ev_io *w, int revents)
1186{ 1542{
1187 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1543 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188} 1544}
1189 1545
1190static void 1546static void
1191once_cb_to (struct ev_timer *w, int revents) 1547once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192{ 1548{
1193 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1549 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194} 1550}
1195 1551
1196void 1552void
1197ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1553ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198{ 1554{
1199 struct ev_once *once = malloc (sizeof (struct ev_once)); 1555 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1200 1556
1201 if (!once) 1557 if (!once)
1202 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1558 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1203 else 1559 else
1204 { 1560 {
1207 1563
1208 ev_watcher_init (&once->io, once_cb_io); 1564 ev_watcher_init (&once->io, once_cb_io);
1209 if (fd >= 0) 1565 if (fd >= 0)
1210 { 1566 {
1211 ev_io_set (&once->io, fd, events); 1567 ev_io_set (&once->io, fd, events);
1212 ev_io_start (&once->io); 1568 ev_io_start (EV_A_ &once->io);
1213 } 1569 }
1214 1570
1215 ev_watcher_init (&once->to, once_cb_to); 1571 ev_watcher_init (&once->to, once_cb_to);
1216 if (timeout >= 0.) 1572 if (timeout >= 0.)
1217 { 1573 {
1218 ev_timer_set (&once->to, timeout, 0.); 1574 ev_timer_set (&once->to, timeout, 0.);
1219 ev_timer_start (&once->to); 1575 ev_timer_start (EV_A_ &once->to);
1220 } 1576 }
1221 } 1577 }
1222} 1578}
1223 1579
1224/*****************************************************************************/
1225
1226#if 0
1227
1228struct ev_io wio;
1229
1230static void
1231sin_cb (struct ev_io *w, int revents)
1232{
1233 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234}
1235
1236static void
1237ocb (struct ev_timer *w, int revents)
1238{
1239 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240 ev_timer_stop (w);
1241 ev_timer_start (w);
1242}
1243
1244static void
1245scb (struct ev_signal *w, int revents)
1246{
1247 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248 ev_io_stop (&wio);
1249 ev_io_start (&wio);
1250}
1251
1252static void
1253gcb (struct ev_signal *w, int revents)
1254{
1255 fprintf (stderr, "generic %x\n", revents);
1256
1257}
1258
1259int main (void)
1260{
1261 ev_init (0);
1262
1263 ev_io_init (&wio, sin_cb, 0, EV_READ);
1264 ev_io_start (&wio);
1265
1266 struct ev_timer t[10000];
1267
1268#if 0
1269 int i;
1270 for (i = 0; i < 10000; ++i)
1271 {
1272 struct ev_timer *w = t + i;
1273 ev_watcher_init (w, ocb, i);
1274 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275 ev_timer_start (w);
1276 if (drand48 () < 0.5)
1277 ev_timer_stop (w);
1278 }
1279#endif
1280
1281 struct ev_timer t1;
1282 ev_timer_init (&t1, ocb, 5, 10);
1283 ev_timer_start (&t1);
1284
1285 struct ev_signal sig;
1286 ev_signal_init (&sig, scb, SIGQUIT);
1287 ev_signal_start (&sig);
1288
1289 struct ev_check cw;
1290 ev_check_init (&cw, gcb);
1291 ev_check_start (&cw);
1292
1293 struct ev_idle iw;
1294 ev_idle_init (&iw, gcb);
1295 ev_idle_start (&iw);
1296
1297 ev_loop (0);
1298
1299 return 0;
1300}
1301
1302#endif
1303
1304
1305
1306

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