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Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.78 by root, Thu Nov 8 21:08:56 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#if EV_USE_CONFIG_H 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_io *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 347static void
235fd_event (int fd, int events) 348fd_event (EV_P_ int fd, int events)
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 = anfd->head; w; w = 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 & events;
243 356
244 if (ev) 357 if (ev)
245 event ((W)w, ev); 358 ev_feed_event (EV_A_ (W)w, ev);
246 } 359 }
247} 360}
248 361
249/*****************************************************************************/ 362/*****************************************************************************/
250 363
251static int *fdchanges;
252static int fdchangemax, fdchangecnt;
253
254static void 364static void
255fd_reify (void) 365fd_reify (EV_P)
256{ 366{
257 int i; 367 int i;
258 368
259 for (i = 0; i < fdchangecnt; ++i) 369 for (i = 0; i < fdchangecnt; ++i)
260 { 370 {
262 ANFD *anfd = anfds + fd; 372 ANFD *anfd = anfds + fd;
263 struct ev_io *w; 373 struct ev_io *w;
264 374
265 int events = 0; 375 int events = 0;
266 376
267 for (w = anfd->head; w; w = w->next) 377 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268 events |= w->events; 378 events |= w->events;
269 379
270 anfd->reify = 0; 380 anfd->reify = 0;
271 381
272 if (anfd->events != events)
273 {
274 method_modify (fd, anfd->events, events); 382 method_modify (EV_A_ fd, anfd->events, events);
275 anfd->events = events; 383 anfd->events = events;
276 }
277 } 384 }
278 385
279 fdchangecnt = 0; 386 fdchangecnt = 0;
280} 387}
281 388
282static void 389static void
283fd_change (int fd) 390fd_change (EV_P_ int fd)
284{ 391{
285 if (anfds [fd].reify || fdchangecnt < 0) 392 if (anfds [fd].reify)
286 return; 393 return;
287 394
288 anfds [fd].reify = 1; 395 anfds [fd].reify = 1;
289 396
290 ++fdchangecnt; 397 ++fdchangecnt;
291 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 398 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
292 fdchanges [fdchangecnt - 1] = fd; 399 fdchanges [fdchangecnt - 1] = fd;
293} 400}
294 401
295static void 402static void
296fd_kill (int fd) 403fd_kill (EV_P_ int fd)
297{ 404{
298 struct ev_io *w; 405 struct ev_io *w;
299 406
300 printf ("killing fd %d\n", fd);//D
301 while ((w = anfds [fd].head)) 407 while ((w = (struct ev_io *)anfds [fd].head))
302 { 408 {
303 ev_io_stop (w); 409 ev_io_stop (EV_A_ w);
304 event ((W)w, EV_ERROR | EV_READ | EV_WRITE); 410 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305 } 411 }
412}
413
414static int
415fd_valid (int fd)
416{
417#ifdef WIN32
418 return !!win32_get_osfhandle (fd);
419#else
420 return fcntl (fd, F_GETFD) != -1;
421#endif
306} 422}
307 423
308/* called on EBADF to verify fds */ 424/* called on EBADF to verify fds */
309static void 425static void
310fd_ebadf (void) 426fd_ebadf (EV_P)
311{ 427{
312 int fd; 428 int fd;
313 429
314 for (fd = 0; fd < anfdmax; ++fd) 430 for (fd = 0; fd < anfdmax; ++fd)
315 if (anfds [fd].events) 431 if (anfds [fd].events)
316 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 432 if (!fd_valid (fd) == -1 && errno == EBADF)
317 fd_kill (fd); 433 fd_kill (EV_A_ fd);
318} 434}
319 435
320/* called on ENOMEM in select/poll to kill some fds and retry */ 436/* called on ENOMEM in select/poll to kill some fds and retry */
321static void 437static void
322fd_enomem (void) 438fd_enomem (EV_P)
323{ 439{
324 int fd = anfdmax; 440 int fd;
325 441
326 while (fd--) 442 for (fd = anfdmax; fd--; )
327 if (anfds [fd].events) 443 if (anfds [fd].events)
328 { 444 {
329 close (fd);
330 fd_kill (fd); 445 fd_kill (EV_A_ fd);
331 return; 446 return;
332 } 447 }
333} 448}
334 449
450/* usually called after fork if method needs to re-arm all fds from scratch */
451static void
452fd_rearm_all (EV_P)
453{
454 int fd;
455
456 /* this should be highly optimised to not do anything but set a flag */
457 for (fd = 0; fd < anfdmax; ++fd)
458 if (anfds [fd].events)
459 {
460 anfds [fd].events = 0;
461 fd_change (EV_A_ fd);
462 }
463}
464
335/*****************************************************************************/ 465/*****************************************************************************/
336 466
337static struct ev_timer **timers;
338static int timermax, timercnt;
339
340static struct ev_periodic **periodics;
341static int periodicmax, periodiccnt;
342
343static void 467static void
344upheap (WT *timers, int k) 468upheap (WT *heap, int k)
345{ 469{
346 WT w = timers [k]; 470 WT w = heap [k];
347 471
348 while (k && timers [k >> 1]->at > w->at) 472 while (k && heap [k >> 1]->at > w->at)
349 { 473 {
350 timers [k] = timers [k >> 1]; 474 heap [k] = heap [k >> 1];
351 timers [k]->active = k + 1; 475 ((W)heap [k])->active = k + 1;
352 k >>= 1; 476 k >>= 1;
353 } 477 }
354 478
355 timers [k] = w; 479 heap [k] = w;
356 timers [k]->active = k + 1; 480 ((W)heap [k])->active = k + 1;
357 481
358} 482}
359 483
360static void 484static void
361downheap (WT *timers, int N, int k) 485downheap (WT *heap, int N, int k)
362{ 486{
363 WT w = timers [k]; 487 WT w = heap [k];
364 488
365 while (k < (N >> 1)) 489 while (k < (N >> 1))
366 { 490 {
367 int j = k << 1; 491 int j = k << 1;
368 492
369 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 493 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370 ++j; 494 ++j;
371 495
372 if (w->at <= timers [j]->at) 496 if (w->at <= heap [j]->at)
373 break; 497 break;
374 498
375 timers [k] = timers [j]; 499 heap [k] = heap [j];
376 timers [k]->active = k + 1; 500 ((W)heap [k])->active = k + 1;
377 k = j; 501 k = j;
378 } 502 }
379 503
380 timers [k] = w; 504 heap [k] = w;
381 timers [k]->active = k + 1; 505 ((W)heap [k])->active = k + 1;
382} 506}
383 507
384/*****************************************************************************/ 508/*****************************************************************************/
385 509
386typedef struct 510typedef struct
387{ 511{
388 struct ev_signal *head; 512 WL head;
389 sig_atomic_t volatile gotsig; 513 sig_atomic_t volatile gotsig;
390} ANSIG; 514} ANSIG;
391 515
392static ANSIG *signals; 516static ANSIG *signals;
393static int signalmax; 517static int signalmax;
409} 533}
410 534
411static void 535static void
412sighandler (int signum) 536sighandler (int signum)
413{ 537{
538#if WIN32
539 signal (signum, sighandler);
540#endif
541
414 signals [signum - 1].gotsig = 1; 542 signals [signum - 1].gotsig = 1;
415 543
416 if (!gotsig) 544 if (!gotsig)
417 { 545 {
546 int old_errno = errno;
418 gotsig = 1; 547 gotsig = 1;
548#ifdef WIN32
549 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
550#else
419 write (sigpipe [1], &signum, 1); 551 write (sigpipe [1], &signum, 1);
552#endif
553 errno = old_errno;
420 } 554 }
421} 555}
422 556
423static void 557static void
424sigcb (struct ev_io *iow, int revents) 558sigcb (EV_P_ struct ev_io *iow, int revents)
425{ 559{
426 struct ev_signal *w; 560 WL w;
427 int signum; 561 int signum;
428 562
563#ifdef WIN32
564 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
565#else
429 read (sigpipe [0], &revents, 1); 566 read (sigpipe [0], &revents, 1);
567#endif
430 gotsig = 0; 568 gotsig = 0;
431 569
432 for (signum = signalmax; signum--; ) 570 for (signum = signalmax; signum--; )
433 if (signals [signum].gotsig) 571 if (signals [signum].gotsig)
434 { 572 {
435 signals [signum].gotsig = 0; 573 signals [signum].gotsig = 0;
436 574
437 for (w = signals [signum].head; w; w = w->next) 575 for (w = signals [signum].head; w; w = w->next)
438 event ((W)w, EV_SIGNAL); 576 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
439 } 577 }
440} 578}
441 579
442static void 580static void
443siginit (void) 581siginit (EV_P)
444{ 582{
445#ifndef WIN32 583#ifndef WIN32
446 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 584 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); 585 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448 586
450 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 588 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 589 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452#endif 590#endif
453 591
454 ev_io_set (&sigev, sigpipe [0], EV_READ); 592 ev_io_set (&sigev, sigpipe [0], EV_READ);
455 ev_io_start (&sigev); 593 ev_io_start (EV_A_ &sigev);
594 ev_unref (EV_A); /* child watcher should not keep loop alive */
456} 595}
457 596
458/*****************************************************************************/ 597/*****************************************************************************/
459 598
460static struct ev_idle **idles;
461static int idlemax, idlecnt;
462
463static struct ev_prepare **prepares;
464static int preparemax, preparecnt;
465
466static struct ev_check **checks;
467static int checkmax, checkcnt;
468
469/*****************************************************************************/
470
471static struct ev_child *childs [PID_HASHSIZE]; 599static struct ev_child *childs [PID_HASHSIZE];
600
601#ifndef WIN32
602
472static struct ev_signal childev; 603static struct ev_signal childev;
473
474#ifndef WIN32
475 604
476#ifndef WCONTINUED 605#ifndef WCONTINUED
477# define WCONTINUED 0 606# define WCONTINUED 0
478#endif 607#endif
479 608
480static void 609static void
481childcb (struct ev_signal *sw, int revents) 610child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482{ 611{
483 struct ev_child *w; 612 struct ev_child *w;
613
614 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
615 if (w->pid == pid || !w->pid)
616 {
617 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
618 w->rpid = pid;
619 w->rstatus = status;
620 ev_feed_event (EV_A_ (W)w, EV_CHILD);
621 }
622}
623
624static void
625childcb (EV_P_ struct ev_signal *sw, int revents)
626{
484 int pid, status; 627 int pid, status;
485 628
486 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 629 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 630 {
488 if (w->pid == pid || !w->pid) 631 /* make sure we are called again until all childs have been reaped */
489 { 632 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
490 w->rpid = pid; 633
491 w->rstatus = status; 634 child_reap (EV_A_ sw, pid, pid, status);
492 event ((W)w, EV_CHILD); 635 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493 } 636 }
494} 637}
495 638
496#endif 639#endif
497 640
498/*****************************************************************************/ 641/*****************************************************************************/
520ev_version_minor (void) 663ev_version_minor (void)
521{ 664{
522 return EV_VERSION_MINOR; 665 return EV_VERSION_MINOR;
523} 666}
524 667
525/* return true if we are running with elevated privileges and ignore env variables */ 668/* return true if we are running with elevated privileges and should ignore env variables */
526static int 669static int
527enable_secure () 670enable_secure (void)
528{ 671{
672#ifdef WIN32
673 return 0;
674#else
529 return getuid () != geteuid () 675 return getuid () != geteuid ()
530 || getgid () != getegid (); 676 || getgid () != getegid ();
677#endif
531} 678}
532 679
533int ev_init (int methods) 680int
681ev_method (EV_P)
534{ 682{
683 return method;
684}
685
686static void
687loop_init (EV_P_ int methods)
688{
535 if (!ev_method) 689 if (!method)
536 { 690 {
537#if EV_USE_MONOTONIC 691#if EV_USE_MONOTONIC
538 { 692 {
539 struct timespec ts; 693 struct timespec ts;
540 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 694 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541 have_monotonic = 1; 695 have_monotonic = 1;
542 } 696 }
543#endif 697#endif
544 698
545 ev_now = ev_time (); 699 rt_now = ev_time ();
546 now = get_clock (); 700 mn_now = get_clock ();
547 now_floor = now; 701 now_floor = mn_now;
548 diff = ev_now - now; 702 rtmn_diff = rt_now - mn_now;
549
550 if (pipe (sigpipe))
551 return 0;
552 703
553 if (methods == EVMETHOD_AUTO) 704 if (methods == EVMETHOD_AUTO)
554 if (!enable_secure () && getenv ("LIBEV_METHODS")) 705 if (!enable_secure () && getenv ("LIBEV_METHODS"))
555 methods = atoi (getenv ("LIBEV_METHODS")); 706 methods = atoi (getenv ("LIBEV_METHODS"));
556 else 707 else
557 methods = EVMETHOD_ANY; 708 methods = EVMETHOD_ANY;
558 709
559 ev_method = 0; 710 method = 0;
711#if EV_USE_WIN32
712 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
713#endif
560#if EV_USE_KQUEUE 714#if EV_USE_KQUEUE
561 if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); 715 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
562#endif 716#endif
563#if EV_USE_EPOLL 717#if EV_USE_EPOLL
564 if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); 718 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
565#endif 719#endif
566#if EV_USE_POLL 720#if EV_USE_POLL
567 if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); 721 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
568#endif 722#endif
569#if EV_USE_SELECT 723#if EV_USE_SELECT
570 if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); 724 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
571#endif 725#endif
572 726
727 ev_watcher_init (&sigev, sigcb);
728 ev_set_priority (&sigev, EV_MAXPRI);
729 }
730}
731
732void
733loop_destroy (EV_P)
734{
735 int i;
736
737#if EV_USE_WIN32
738 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
739#endif
740#if EV_USE_KQUEUE
741 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
742#endif
743#if EV_USE_EPOLL
744 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
745#endif
746#if EV_USE_POLL
747 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
748#endif
749#if EV_USE_SELECT
750 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
751#endif
752
753 for (i = NUMPRI; i--; )
754 array_free (pending, [i]);
755
756 /* have to use the microsoft-never-gets-it-right macro */
757 array_free_microshit (fdchange);
758 array_free_microshit (timer);
759 array_free_microshit (periodic);
760 array_free_microshit (idle);
761 array_free_microshit (prepare);
762 array_free_microshit (check);
763
764 method = 0;
765}
766
767static void
768loop_fork (EV_P)
769{
770#if EV_USE_EPOLL
771 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
772#endif
773#if EV_USE_KQUEUE
774 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
775#endif
776
777 if (ev_is_active (&sigev))
778 {
779 /* default loop */
780
781 ev_ref (EV_A);
782 ev_io_stop (EV_A_ &sigev);
783 close (sigpipe [0]);
784 close (sigpipe [1]);
785
786 while (pipe (sigpipe))
787 syserr ("(libev) error creating pipe");
788
789 siginit (EV_A);
790 }
791
792 postfork = 0;
793}
794
795#if EV_MULTIPLICITY
796struct ev_loop *
797ev_loop_new (int methods)
798{
799 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
800
801 memset (loop, 0, sizeof (struct ev_loop));
802
803 loop_init (EV_A_ methods);
804
805 if (ev_method (EV_A))
806 return loop;
807
808 return 0;
809}
810
811void
812ev_loop_destroy (EV_P)
813{
814 loop_destroy (EV_A);
815 ev_free (loop);
816}
817
818void
819ev_loop_fork (EV_P)
820{
821 postfork = 1;
822}
823
824#endif
825
826#if EV_MULTIPLICITY
827struct ev_loop default_loop_struct;
828static struct ev_loop *default_loop;
829
830struct ev_loop *
831#else
832static int default_loop;
833
834int
835#endif
836ev_default_loop (int methods)
837{
838 if (sigpipe [0] == sigpipe [1])
839 if (pipe (sigpipe))
840 return 0;
841
842 if (!default_loop)
843 {
844#if EV_MULTIPLICITY
845 struct ev_loop *loop = default_loop = &default_loop_struct;
846#else
847 default_loop = 1;
848#endif
849
850 loop_init (EV_A_ methods);
851
573 if (ev_method) 852 if (ev_method (EV_A))
574 { 853 {
575 ev_watcher_init (&sigev, sigcb);
576 siginit (); 854 siginit (EV_A);
577 855
578#ifndef WIN32 856#ifndef WIN32
579 ev_signal_init (&childev, childcb, SIGCHLD); 857 ev_signal_init (&childev, childcb, SIGCHLD);
858 ev_set_priority (&childev, EV_MAXPRI);
580 ev_signal_start (&childev); 859 ev_signal_start (EV_A_ &childev);
860 ev_unref (EV_A); /* child watcher should not keep loop alive */
581#endif 861#endif
582 } 862 }
863 else
864 default_loop = 0;
583 } 865 }
584 866
585 return ev_method; 867 return default_loop;
868}
869
870void
871ev_default_destroy (void)
872{
873#if EV_MULTIPLICITY
874 struct ev_loop *loop = default_loop;
875#endif
876
877#ifndef WIN32
878 ev_ref (EV_A); /* child watcher */
879 ev_signal_stop (EV_A_ &childev);
880#endif
881
882 ev_ref (EV_A); /* signal watcher */
883 ev_io_stop (EV_A_ &sigev);
884
885 close (sigpipe [0]); sigpipe [0] = 0;
886 close (sigpipe [1]); sigpipe [1] = 0;
887
888 loop_destroy (EV_A);
889}
890
891void
892ev_default_fork (void)
893{
894#if EV_MULTIPLICITY
895 struct ev_loop *loop = default_loop;
896#endif
897
898 if (method)
899 postfork = 1;
586} 900}
587 901
588/*****************************************************************************/ 902/*****************************************************************************/
589 903
590void
591ev_fork_prepare (void)
592{
593 /* nop */
594}
595
596void
597ev_fork_parent (void)
598{
599 /* nop */
600}
601
602void
603ev_fork_child (void)
604{
605#if EV_USE_EPOLL
606 if (ev_method == EVMETHOD_EPOLL)
607 epoll_postfork_child ();
608#endif
609
610 ev_io_stop (&sigev);
611 close (sigpipe [0]);
612 close (sigpipe [1]);
613 pipe (sigpipe);
614 siginit ();
615}
616
617/*****************************************************************************/
618
619static void 904static int
905any_pending (EV_P)
906{
907 int pri;
908
909 for (pri = NUMPRI; pri--; )
910 if (pendingcnt [pri])
911 return 1;
912
913 return 0;
914}
915
916static void
620call_pending (void) 917call_pending (EV_P)
621{ 918{
622 int pri; 919 int pri;
623 920
624 for (pri = NUMPRI; pri--; ) 921 for (pri = NUMPRI; pri--; )
625 while (pendingcnt [pri]) 922 while (pendingcnt [pri])
627 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 924 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628 925
629 if (p->w) 926 if (p->w)
630 { 927 {
631 p->w->pending = 0; 928 p->w->pending = 0;
632 p->w->cb (p->w, p->events); 929 p->w->cb (EV_A_ p->w, p->events);
633 } 930 }
634 } 931 }
635} 932}
636 933
637static void 934static void
638timers_reify (void) 935timers_reify (EV_P)
639{ 936{
640 while (timercnt && timers [0]->at <= now) 937 while (timercnt && ((WT)timers [0])->at <= mn_now)
641 { 938 {
642 struct ev_timer *w = timers [0]; 939 struct ev_timer *w = timers [0];
940
941 assert (("inactive timer on timer heap detected", ev_is_active (w)));
643 942
644 /* first reschedule or stop timer */ 943 /* first reschedule or stop timer */
645 if (w->repeat) 944 if (w->repeat)
646 { 945 {
647 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 946 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
648 w->at = now + w->repeat; 947 ((WT)w)->at = mn_now + w->repeat;
649 downheap ((WT *)timers, timercnt, 0); 948 downheap ((WT *)timers, timercnt, 0);
650 } 949 }
651 else 950 else
652 ev_timer_stop (w); /* nonrepeating: stop timer */ 951 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653 952
654 event ((W)w, EV_TIMEOUT); 953 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
655 } 954 }
656} 955}
657 956
658static void 957static void
659periodics_reify (void) 958periodics_reify (EV_P)
660{ 959{
661 while (periodiccnt && periodics [0]->at <= ev_now) 960 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
662 { 961 {
663 struct ev_periodic *w = periodics [0]; 962 struct ev_periodic *w = periodics [0];
664 963
964 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
965
665 /* first reschedule or stop timer */ 966 /* first reschedule or stop timer */
666 if (w->interval) 967 if (w->reschedule_cb)
667 { 968 {
969 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
970
971 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
972 downheap ((WT *)periodics, periodiccnt, 0);
973 }
974 else if (w->interval)
975 {
668 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 976 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
669 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 977 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
670 downheap ((WT *)periodics, periodiccnt, 0); 978 downheap ((WT *)periodics, periodiccnt, 0);
671 } 979 }
672 else 980 else
673 ev_periodic_stop (w); /* nonrepeating: stop timer */ 981 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674 982
675 event ((W)w, EV_PERIODIC); 983 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
676 } 984 }
677} 985}
678 986
679static void 987static void
680periodics_reschedule (ev_tstamp diff) 988periodics_reschedule (EV_P)
681{ 989{
682 int i; 990 int i;
683 991
684 /* adjust periodics after time jump */ 992 /* adjust periodics after time jump */
685 for (i = 0; i < periodiccnt; ++i) 993 for (i = 0; i < periodiccnt; ++i)
686 { 994 {
687 struct ev_periodic *w = periodics [i]; 995 struct ev_periodic *w = periodics [i];
688 996
997 if (w->reschedule_cb)
998 ((WT)w)->at = w->reschedule_cb (w, rt_now);
689 if (w->interval) 999 else if (w->interval)
690 {
691 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1000 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
692
693 if (fabs (diff) >= 1e-4)
694 {
695 ev_periodic_stop (w);
696 ev_periodic_start (w);
697
698 i = 0; /* restart loop, inefficient, but time jumps should be rare */
699 }
700 }
701 } 1001 }
702}
703 1002
704static int 1003 /* now rebuild the heap */
1004 for (i = periodiccnt >> 1; i--; )
1005 downheap ((WT *)periodics, periodiccnt, i);
1006}
1007
1008inline int
705time_update_monotonic (void) 1009time_update_monotonic (EV_P)
706{ 1010{
707 now = get_clock (); 1011 mn_now = get_clock ();
708 1012
709 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) 1013 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710 { 1014 {
711 ev_now = now + diff; 1015 rt_now = rtmn_diff + mn_now;
712 return 0; 1016 return 0;
713 } 1017 }
714 else 1018 else
715 { 1019 {
716 now_floor = now; 1020 now_floor = mn_now;
717 ev_now = ev_time (); 1021 rt_now = ev_time ();
718 return 1; 1022 return 1;
719 } 1023 }
720} 1024}
721 1025
722static void 1026static void
723time_update (void) 1027time_update (EV_P)
724{ 1028{
725 int i; 1029 int i;
726 1030
727#if EV_USE_MONOTONIC 1031#if EV_USE_MONOTONIC
728 if (expect_true (have_monotonic)) 1032 if (expect_true (have_monotonic))
729 { 1033 {
730 if (time_update_monotonic ()) 1034 if (time_update_monotonic (EV_A))
731 { 1035 {
732 ev_tstamp odiff = diff; 1036 ev_tstamp odiff = rtmn_diff;
733 1037
734 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1038 for (i = 4; --i; ) /* loop a few times, before making important decisions */
735 { 1039 {
736 diff = ev_now - now; 1040 rtmn_diff = rt_now - mn_now;
737 1041
738 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1042 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739 return; /* all is well */ 1043 return; /* all is well */
740 1044
741 ev_now = ev_time (); 1045 rt_now = ev_time ();
742 now = get_clock (); 1046 mn_now = get_clock ();
743 now_floor = now; 1047 now_floor = mn_now;
744 } 1048 }
745 1049
746 periodics_reschedule (diff - odiff); 1050 periodics_reschedule (EV_A);
747 /* no timer adjustment, as the monotonic clock doesn't jump */ 1051 /* no timer adjustment, as the monotonic clock doesn't jump */
1052 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748 } 1053 }
749 } 1054 }
750 else 1055 else
751#endif 1056#endif
752 { 1057 {
753 ev_now = ev_time (); 1058 rt_now = ev_time ();
754 1059
755 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1060 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756 { 1061 {
757 periodics_reschedule (ev_now - now); 1062 periodics_reschedule (EV_A);
758 1063
759 /* adjust timers. this is easy, as the offset is the same for all */ 1064 /* adjust timers. this is easy, as the offset is the same for all */
760 for (i = 0; i < timercnt; ++i) 1065 for (i = 0; i < timercnt; ++i)
761 timers [i]->at += diff; 1066 ((WT)timers [i])->at += rt_now - mn_now;
762 } 1067 }
763 1068
764 now = ev_now; 1069 mn_now = rt_now;
765 } 1070 }
766} 1071}
767 1072
768int ev_loop_done; 1073void
1074ev_ref (EV_P)
1075{
1076 ++activecnt;
1077}
769 1078
1079void
1080ev_unref (EV_P)
1081{
1082 --activecnt;
1083}
1084
1085static int loop_done;
1086
1087void
770void ev_loop (int flags) 1088ev_loop (EV_P_ int flags)
771{ 1089{
772 double block; 1090 double block;
773 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1091 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
774 1092
775 do 1093 do
776 { 1094 {
777 /* queue check watchers (and execute them) */ 1095 /* queue check watchers (and execute them) */
778 if (expect_false (preparecnt)) 1096 if (expect_false (preparecnt))
779 { 1097 {
780 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1098 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781 call_pending (); 1099 call_pending (EV_A);
782 } 1100 }
783 1101
1102 /* we might have forked, so reify kernel state if necessary */
1103 if (expect_false (postfork))
1104 loop_fork (EV_A);
1105
784 /* update fd-related kernel structures */ 1106 /* update fd-related kernel structures */
785 fd_reify (); 1107 fd_reify (EV_A);
786 1108
787 /* calculate blocking time */ 1109 /* calculate blocking time */
788 1110
789 /* we only need this for !monotonic clockor timers, but as we basically 1111 /* we only need this for !monotonic clock or timers, but as we basically
790 always have timers, we just calculate it always */ 1112 always have timers, we just calculate it always */
791#if EV_USE_MONOTONIC 1113#if EV_USE_MONOTONIC
792 if (expect_true (have_monotonic)) 1114 if (expect_true (have_monotonic))
793 time_update_monotonic (); 1115 time_update_monotonic (EV_A);
794 else 1116 else
795#endif 1117#endif
796 { 1118 {
797 ev_now = ev_time (); 1119 rt_now = ev_time ();
798 now = ev_now; 1120 mn_now = rt_now;
799 } 1121 }
800 1122
801 if (flags & EVLOOP_NONBLOCK || idlecnt) 1123 if (flags & EVLOOP_NONBLOCK || idlecnt)
802 block = 0.; 1124 block = 0.;
803 else 1125 else
804 { 1126 {
805 block = MAX_BLOCKTIME; 1127 block = MAX_BLOCKTIME;
806 1128
807 if (timercnt) 1129 if (timercnt)
808 { 1130 {
809 ev_tstamp to = timers [0]->at - now + method_fudge; 1131 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810 if (block > to) block = to; 1132 if (block > to) block = to;
811 } 1133 }
812 1134
813 if (periodiccnt) 1135 if (periodiccnt)
814 { 1136 {
815 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1137 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
816 if (block > to) block = to; 1138 if (block > to) block = to;
817 } 1139 }
818 1140
819 if (block < 0.) block = 0.; 1141 if (block < 0.) block = 0.;
820 } 1142 }
821 1143
822 method_poll (block); 1144 method_poll (EV_A_ block);
823 1145
824 /* update ev_now, do magic */ 1146 /* update rt_now, do magic */
825 time_update (); 1147 time_update (EV_A);
826 1148
827 /* queue pending timers and reschedule them */ 1149 /* queue pending timers and reschedule them */
828 timers_reify (); /* relative timers called last */ 1150 timers_reify (EV_A); /* relative timers called last */
829 periodics_reify (); /* absolute timers called first */ 1151 periodics_reify (EV_A); /* absolute timers called first */
830 1152
831 /* queue idle watchers unless io or timers are pending */ 1153 /* queue idle watchers unless io or timers are pending */
832 if (!pendingcnt) 1154 if (idlecnt && !any_pending (EV_A))
833 queue_events ((W *)idles, idlecnt, EV_IDLE); 1155 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834 1156
835 /* queue check watchers, to be executed first */ 1157 /* queue check watchers, to be executed first */
836 if (checkcnt) 1158 if (checkcnt)
837 queue_events ((W *)checks, checkcnt, EV_CHECK); 1159 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838 1160
839 call_pending (); 1161 call_pending (EV_A);
840 } 1162 }
841 while (!ev_loop_done); 1163 while (activecnt && !loop_done);
842 1164
843 if (ev_loop_done != 2) 1165 if (loop_done != 2)
844 ev_loop_done = 0; 1166 loop_done = 0;
1167}
1168
1169void
1170ev_unloop (EV_P_ int how)
1171{
1172 loop_done = how;
845} 1173}
846 1174
847/*****************************************************************************/ 1175/*****************************************************************************/
848 1176
849static void 1177inline void
850wlist_add (WL *head, WL elem) 1178wlist_add (WL *head, WL elem)
851{ 1179{
852 elem->next = *head; 1180 elem->next = *head;
853 *head = elem; 1181 *head = elem;
854} 1182}
855 1183
856static void 1184inline void
857wlist_del (WL *head, WL elem) 1185wlist_del (WL *head, WL elem)
858{ 1186{
859 while (*head) 1187 while (*head)
860 { 1188 {
861 if (*head == elem) 1189 if (*head == elem)
866 1194
867 head = &(*head)->next; 1195 head = &(*head)->next;
868 } 1196 }
869} 1197}
870 1198
871static void 1199inline void
872ev_clear_pending (W w) 1200ev_clear_pending (EV_P_ W w)
873{ 1201{
874 if (w->pending) 1202 if (w->pending)
875 { 1203 {
876 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1204 pendings [ABSPRI (w)][w->pending - 1].w = 0;
877 w->pending = 0; 1205 w->pending = 0;
878 } 1206 }
879} 1207}
880 1208
881static void 1209inline void
882ev_start (W w, int active) 1210ev_start (EV_P_ W w, int active)
883{ 1211{
884 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1212 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1213 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886 1214
887 w->active = active; 1215 w->active = active;
1216 ev_ref (EV_A);
888} 1217}
889 1218
890static void 1219inline void
891ev_stop (W w) 1220ev_stop (EV_P_ W w)
892{ 1221{
1222 ev_unref (EV_A);
893 w->active = 0; 1223 w->active = 0;
894} 1224}
895 1225
896/*****************************************************************************/ 1226/*****************************************************************************/
897 1227
898void 1228void
899ev_io_start (struct ev_io *w) 1229ev_io_start (EV_P_ struct ev_io *w)
900{ 1230{
901 int fd = w->fd; 1231 int fd = w->fd;
902 1232
903 if (ev_is_active (w)) 1233 if (ev_is_active (w))
904 return; 1234 return;
905 1235
906 assert (("ev_io_start called with negative fd", fd >= 0)); 1236 assert (("ev_io_start called with negative fd", fd >= 0));
907 1237
908 ev_start ((W)w, 1); 1238 ev_start (EV_A_ (W)w, 1);
909 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1239 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
910 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1240 wlist_add ((WL *)&anfds[fd].head, (WL)w);
911 1241
912 fd_change (fd); 1242 fd_change (EV_A_ fd);
913} 1243}
914 1244
915void 1245void
916ev_io_stop (struct ev_io *w) 1246ev_io_stop (EV_P_ struct ev_io *w)
917{ 1247{
918 ev_clear_pending ((W)w); 1248 ev_clear_pending (EV_A_ (W)w);
919 if (!ev_is_active (w)) 1249 if (!ev_is_active (w))
920 return; 1250 return;
921 1251
922 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1252 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923 ev_stop ((W)w); 1253 ev_stop (EV_A_ (W)w);
924 1254
925 fd_change (w->fd); 1255 fd_change (EV_A_ w->fd);
926} 1256}
927 1257
928void 1258void
929ev_timer_start (struct ev_timer *w) 1259ev_timer_start (EV_P_ struct ev_timer *w)
930{ 1260{
931 if (ev_is_active (w)) 1261 if (ev_is_active (w))
932 return; 1262 return;
933 1263
934 w->at += now; 1264 ((WT)w)->at += mn_now;
935 1265
936 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1266 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937 1267
938 ev_start ((W)w, ++timercnt); 1268 ev_start (EV_A_ (W)w, ++timercnt);
939 array_needsize (timers, timermax, timercnt, ); 1269 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
940 timers [timercnt - 1] = w; 1270 timers [timercnt - 1] = w;
941 upheap ((WT *)timers, timercnt - 1); 1271 upheap ((WT *)timers, timercnt - 1);
942}
943 1272
1273 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1274}
1275
944void 1276void
945ev_timer_stop (struct ev_timer *w) 1277ev_timer_stop (EV_P_ struct ev_timer *w)
946{ 1278{
947 ev_clear_pending ((W)w); 1279 ev_clear_pending (EV_A_ (W)w);
948 if (!ev_is_active (w)) 1280 if (!ev_is_active (w))
949 return; 1281 return;
950 1282
1283 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1284
951 if (w->active < timercnt--) 1285 if (((W)w)->active < timercnt--)
952 { 1286 {
953 timers [w->active - 1] = timers [timercnt]; 1287 timers [((W)w)->active - 1] = timers [timercnt];
954 downheap ((WT *)timers, timercnt, w->active - 1); 1288 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955 } 1289 }
956 1290
957 w->at = w->repeat; 1291 ((WT)w)->at = w->repeat;
958 1292
959 ev_stop ((W)w); 1293 ev_stop (EV_A_ (W)w);
960} 1294}
961 1295
962void 1296void
963ev_timer_again (struct ev_timer *w) 1297ev_timer_again (EV_P_ struct ev_timer *w)
964{ 1298{
965 if (ev_is_active (w)) 1299 if (ev_is_active (w))
966 { 1300 {
967 if (w->repeat) 1301 if (w->repeat)
968 { 1302 {
969 w->at = now + w->repeat; 1303 ((WT)w)->at = mn_now + w->repeat;
970 downheap ((WT *)timers, timercnt, w->active - 1); 1304 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971 } 1305 }
972 else 1306 else
973 ev_timer_stop (w); 1307 ev_timer_stop (EV_A_ w);
974 } 1308 }
975 else if (w->repeat) 1309 else if (w->repeat)
976 ev_timer_start (w); 1310 ev_timer_start (EV_A_ w);
977} 1311}
978 1312
979void 1313void
980ev_periodic_start (struct ev_periodic *w) 1314ev_periodic_start (EV_P_ struct ev_periodic *w)
981{ 1315{
982 if (ev_is_active (w)) 1316 if (ev_is_active (w))
983 return; 1317 return;
984 1318
1319 if (w->reschedule_cb)
1320 ((WT)w)->at = w->reschedule_cb (w, rt_now);
1321 else if (w->interval)
1322 {
985 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1323 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986
987 /* this formula differs from the one in periodic_reify because we do not always round up */ 1324 /* this formula differs from the one in periodic_reify because we do not always round up */
988 if (w->interval)
989 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1325 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1326 }
990 1327
991 ev_start ((W)w, ++periodiccnt); 1328 ev_start (EV_A_ (W)w, ++periodiccnt);
992 array_needsize (periodics, periodicmax, periodiccnt, ); 1329 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
993 periodics [periodiccnt - 1] = w; 1330 periodics [periodiccnt - 1] = w;
994 upheap ((WT *)periodics, periodiccnt - 1); 1331 upheap ((WT *)periodics, periodiccnt - 1);
995}
996 1332
1333 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1334}
1335
997void 1336void
998ev_periodic_stop (struct ev_periodic *w) 1337ev_periodic_stop (EV_P_ struct ev_periodic *w)
999{ 1338{
1000 ev_clear_pending ((W)w); 1339 ev_clear_pending (EV_A_ (W)w);
1001 if (!ev_is_active (w)) 1340 if (!ev_is_active (w))
1002 return; 1341 return;
1003 1342
1343 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1344
1004 if (w->active < periodiccnt--) 1345 if (((W)w)->active < periodiccnt--)
1005 { 1346 {
1006 periodics [w->active - 1] = periodics [periodiccnt]; 1347 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1348 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008 } 1349 }
1009 1350
1010 ev_stop ((W)w); 1351 ev_stop (EV_A_ (W)w);
1011} 1352}
1012 1353
1013void 1354void
1355ev_periodic_again (EV_P_ struct ev_periodic *w)
1356{
1357 ev_periodic_stop (EV_A_ w);
1358 ev_periodic_start (EV_A_ w);
1359}
1360
1361void
1014ev_signal_start (struct ev_signal *w) 1362ev_idle_start (EV_P_ struct ev_idle *w)
1015{ 1363{
1016 if (ev_is_active (w)) 1364 if (ev_is_active (w))
1017 return; 1365 return;
1018 1366
1367 ev_start (EV_A_ (W)w, ++idlecnt);
1368 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1369 idles [idlecnt - 1] = w;
1370}
1371
1372void
1373ev_idle_stop (EV_P_ struct ev_idle *w)
1374{
1375 ev_clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w))
1377 return;
1378
1379 idles [((W)w)->active - 1] = idles [--idlecnt];
1380 ev_stop (EV_A_ (W)w);
1381}
1382
1383void
1384ev_prepare_start (EV_P_ struct ev_prepare *w)
1385{
1386 if (ev_is_active (w))
1387 return;
1388
1389 ev_start (EV_A_ (W)w, ++preparecnt);
1390 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1391 prepares [preparecnt - 1] = w;
1392}
1393
1394void
1395ev_prepare_stop (EV_P_ struct ev_prepare *w)
1396{
1397 ev_clear_pending (EV_A_ (W)w);
1398 if (ev_is_active (w))
1399 return;
1400
1401 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1402 ev_stop (EV_A_ (W)w);
1403}
1404
1405void
1406ev_check_start (EV_P_ struct ev_check *w)
1407{
1408 if (ev_is_active (w))
1409 return;
1410
1411 ev_start (EV_A_ (W)w, ++checkcnt);
1412 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1413 checks [checkcnt - 1] = w;
1414}
1415
1416void
1417ev_check_stop (EV_P_ struct ev_check *w)
1418{
1419 ev_clear_pending (EV_A_ (W)w);
1420 if (ev_is_active (w))
1421 return;
1422
1423 checks [((W)w)->active - 1] = checks [--checkcnt];
1424 ev_stop (EV_A_ (W)w);
1425}
1426
1427#ifndef SA_RESTART
1428# define SA_RESTART 0
1429#endif
1430
1431void
1432ev_signal_start (EV_P_ struct ev_signal *w)
1433{
1434#if EV_MULTIPLICITY
1435 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1436#endif
1437 if (ev_is_active (w))
1438 return;
1439
1019 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1440 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020 1441
1021 ev_start ((W)w, 1); 1442 ev_start (EV_A_ (W)w, 1);
1022 array_needsize (signals, signalmax, w->signum, signals_init); 1443 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1023 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1444 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024 1445
1025 if (!w->next) 1446 if (!((WL)w)->next)
1026 { 1447 {
1448#if WIN32
1449 signal (w->signum, sighandler);
1450#else
1027 struct sigaction sa; 1451 struct sigaction sa;
1028 sa.sa_handler = sighandler; 1452 sa.sa_handler = sighandler;
1029 sigfillset (&sa.sa_mask); 1453 sigfillset (&sa.sa_mask);
1030 sa.sa_flags = 0; 1454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031 sigaction (w->signum, &sa, 0); 1455 sigaction (w->signum, &sa, 0);
1456#endif
1032 } 1457 }
1033} 1458}
1034 1459
1035void 1460void
1036ev_signal_stop (struct ev_signal *w) 1461ev_signal_stop (EV_P_ struct ev_signal *w)
1037{ 1462{
1038 ev_clear_pending ((W)w); 1463 ev_clear_pending (EV_A_ (W)w);
1039 if (!ev_is_active (w)) 1464 if (!ev_is_active (w))
1040 return; 1465 return;
1041 1466
1042 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1467 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043 ev_stop ((W)w); 1468 ev_stop (EV_A_ (W)w);
1044 1469
1045 if (!signals [w->signum - 1].head) 1470 if (!signals [w->signum - 1].head)
1046 signal (w->signum, SIG_DFL); 1471 signal (w->signum, SIG_DFL);
1047} 1472}
1048 1473
1049void 1474void
1050ev_idle_start (struct ev_idle *w) 1475ev_child_start (EV_P_ struct ev_child *w)
1051{ 1476{
1477#if EV_MULTIPLICITY
1478 assert (("child watchers are only supported in the default loop", loop == default_loop));
1479#endif
1052 if (ev_is_active (w)) 1480 if (ev_is_active (w))
1053 return; 1481 return;
1054 1482
1055 ev_start ((W)w, ++idlecnt); 1483 ev_start (EV_A_ (W)w, 1);
1056 array_needsize (idles, idlemax, idlecnt, ); 1484 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057 idles [idlecnt - 1] = w;
1058} 1485}
1059 1486
1060void 1487void
1061ev_idle_stop (struct ev_idle *w) 1488ev_child_stop (EV_P_ struct ev_child *w)
1062{ 1489{
1063 ev_clear_pending ((W)w); 1490 ev_clear_pending (EV_A_ (W)w);
1064 if (ev_is_active (w)) 1491 if (ev_is_active (w))
1065 return; 1492 return;
1066 1493
1067 idles [w->active - 1] = idles [--idlecnt];
1068 ev_stop ((W)w);
1069}
1070
1071void
1072ev_prepare_start (struct ev_prepare *w)
1073{
1074 if (ev_is_active (w))
1075 return;
1076
1077 ev_start ((W)w, ++preparecnt);
1078 array_needsize (prepares, preparemax, preparecnt, );
1079 prepares [preparecnt - 1] = w;
1080}
1081
1082void
1083ev_prepare_stop (struct ev_prepare *w)
1084{
1085 ev_clear_pending ((W)w);
1086 if (ev_is_active (w))
1087 return;
1088
1089 prepares [w->active - 1] = prepares [--preparecnt];
1090 ev_stop ((W)w);
1091}
1092
1093void
1094ev_check_start (struct ev_check *w)
1095{
1096 if (ev_is_active (w))
1097 return;
1098
1099 ev_start ((W)w, ++checkcnt);
1100 array_needsize (checks, checkmax, checkcnt, );
1101 checks [checkcnt - 1] = w;
1102}
1103
1104void
1105ev_check_stop (struct ev_check *w)
1106{
1107 ev_clear_pending ((W)w);
1108 if (ev_is_active (w))
1109 return;
1110
1111 checks [w->active - 1] = checks [--checkcnt];
1112 ev_stop ((W)w);
1113}
1114
1115void
1116ev_child_start (struct ev_child *w)
1117{
1118 if (ev_is_active (w))
1119 return;
1120
1121 ev_start ((W)w, 1);
1122 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123}
1124
1125void
1126ev_child_stop (struct ev_child *w)
1127{
1128 ev_clear_pending ((W)w);
1129 if (ev_is_active (w))
1130 return;
1131
1132 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1494 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133 ev_stop ((W)w); 1495 ev_stop (EV_A_ (W)w);
1134} 1496}
1135 1497
1136/*****************************************************************************/ 1498/*****************************************************************************/
1137 1499
1138struct ev_once 1500struct ev_once
1142 void (*cb)(int revents, void *arg); 1504 void (*cb)(int revents, void *arg);
1143 void *arg; 1505 void *arg;
1144}; 1506};
1145 1507
1146static void 1508static void
1147once_cb (struct ev_once *once, int revents) 1509once_cb (EV_P_ struct ev_once *once, int revents)
1148{ 1510{
1149 void (*cb)(int revents, void *arg) = once->cb; 1511 void (*cb)(int revents, void *arg) = once->cb;
1150 void *arg = once->arg; 1512 void *arg = once->arg;
1151 1513
1152 ev_io_stop (&once->io); 1514 ev_io_stop (EV_A_ &once->io);
1153 ev_timer_stop (&once->to); 1515 ev_timer_stop (EV_A_ &once->to);
1154 free (once); 1516 ev_free (once);
1155 1517
1156 cb (revents, arg); 1518 cb (revents, arg);
1157} 1519}
1158 1520
1159static void 1521static void
1160once_cb_io (struct ev_io *w, int revents) 1522once_cb_io (EV_P_ struct ev_io *w, int revents)
1161{ 1523{
1162 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1524 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1163} 1525}
1164 1526
1165static void 1527static void
1166once_cb_to (struct ev_timer *w, int revents) 1528once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167{ 1529{
1168 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1530 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1169} 1531}
1170 1532
1171void 1533void
1172ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1534ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1173{ 1535{
1174 struct ev_once *once = malloc (sizeof (struct ev_once)); 1536 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1175 1537
1176 if (!once) 1538 if (!once)
1177 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1539 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1178 else 1540 else
1179 { 1541 {
1182 1544
1183 ev_watcher_init (&once->io, once_cb_io); 1545 ev_watcher_init (&once->io, once_cb_io);
1184 if (fd >= 0) 1546 if (fd >= 0)
1185 { 1547 {
1186 ev_io_set (&once->io, fd, events); 1548 ev_io_set (&once->io, fd, events);
1187 ev_io_start (&once->io); 1549 ev_io_start (EV_A_ &once->io);
1188 } 1550 }
1189 1551
1190 ev_watcher_init (&once->to, once_cb_to); 1552 ev_watcher_init (&once->to, once_cb_to);
1191 if (timeout >= 0.) 1553 if (timeout >= 0.)
1192 { 1554 {
1193 ev_timer_set (&once->to, timeout, 0.); 1555 ev_timer_set (&once->to, timeout, 0.);
1194 ev_timer_start (&once->to); 1556 ev_timer_start (EV_A_ &once->to);
1195 } 1557 }
1196 } 1558 }
1197} 1559}
1198 1560
1199/*****************************************************************************/
1200
1201#if 0
1202
1203struct ev_io wio;
1204
1205static void
1206sin_cb (struct ev_io *w, int revents)
1207{
1208 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209}
1210
1211static void
1212ocb (struct ev_timer *w, int revents)
1213{
1214 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215 ev_timer_stop (w);
1216 ev_timer_start (w);
1217}
1218
1219static void
1220scb (struct ev_signal *w, int revents)
1221{
1222 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223 ev_io_stop (&wio);
1224 ev_io_start (&wio);
1225}
1226
1227static void
1228gcb (struct ev_signal *w, int revents)
1229{
1230 fprintf (stderr, "generic %x\n", revents);
1231
1232}
1233
1234int main (void)
1235{
1236 ev_init (0);
1237
1238 ev_io_init (&wio, sin_cb, 0, EV_READ);
1239 ev_io_start (&wio);
1240
1241 struct ev_timer t[10000];
1242
1243#if 0
1244 int i;
1245 for (i = 0; i < 10000; ++i)
1246 {
1247 struct ev_timer *w = t + i;
1248 ev_watcher_init (w, ocb, i);
1249 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250 ev_timer_start (w);
1251 if (drand48 () < 0.5)
1252 ev_timer_stop (w);
1253 }
1254#endif
1255
1256 struct ev_timer t1;
1257 ev_timer_init (&t1, ocb, 5, 10);
1258 ev_timer_start (&t1);
1259
1260 struct ev_signal sig;
1261 ev_signal_init (&sig, scb, SIGQUIT);
1262 ev_signal_start (&sig);
1263
1264 struct ev_check cw;
1265 ev_check_init (&cw, gcb);
1266 ev_check_start (&cw);
1267
1268 struct ev_idle iw;
1269 ev_idle_init (&iw, gcb);
1270 ev_idle_start (&iw);
1271
1272 ev_loop (0);
1273
1274 return 0;
1275}
1276
1277#endif
1278
1279
1280
1281

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