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Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC vs.
Revision 1.80 by root, Fri Nov 9 15:30:59 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
220 struct ev_loop
221 {
222 #define VAR(name,decl) decl;
223 #include "ev_vars.h"
224 #undef VAR
225 };
226 #include "ev_wrap.h"
227
228 struct ev_loop default_loop_struct;
229 static struct ev_loop *default_loop;
230
231#else
232
233 #define VAR(name,decl) static decl;
234 #include "ev_vars.h"
235 #undef VAR
236
237 static int default_loop;
238
239#endif
240
241/*****************************************************************************/
242
243inline ev_tstamp
131ev_time (void) 244ev_time (void)
132{ 245{
133#if EV_USE_REALTIME 246#if EV_USE_REALTIME
134 struct timespec ts; 247 struct timespec ts;
135 clock_gettime (CLOCK_REALTIME, &ts); 248 clock_gettime (CLOCK_REALTIME, &ts);
139 gettimeofday (&tv, 0); 252 gettimeofday (&tv, 0);
140 return tv.tv_sec + tv.tv_usec * 1e-6; 253 return tv.tv_sec + tv.tv_usec * 1e-6;
141#endif 254#endif
142} 255}
143 256
144static ev_tstamp 257inline ev_tstamp
145get_clock (void) 258get_clock (void)
146{ 259{
147#if EV_USE_MONOTONIC 260#if EV_USE_MONOTONIC
148 if (expect_true (have_monotonic)) 261 if (expect_true (have_monotonic))
149 { 262 {
154#endif 267#endif
155 268
156 return ev_time (); 269 return ev_time ();
157} 270}
158 271
272ev_tstamp
273ev_now (EV_P)
274{
275 return rt_now;
276}
277
159#define array_roundsize(base,n) ((n) | 4 & ~3) 278#define array_roundsize(type,n) ((n) | 4 & ~3)
160 279
161#define array_needsize(base,cur,cnt,init) \ 280#define array_needsize(type,base,cur,cnt,init) \
162 if (expect_false ((cnt) > cur)) \ 281 if (expect_false ((cnt) > cur)) \
163 { \ 282 { \
164 int newcnt = cur; \ 283 int newcnt = cur; \
165 do \ 284 do \
166 { \ 285 { \
167 newcnt = array_roundsize (base, newcnt << 1); \ 286 newcnt = array_roundsize (type, newcnt << 1); \
168 } \ 287 } \
169 while ((cnt) > newcnt); \ 288 while ((cnt) > newcnt); \
170 \ 289 \
171 base = realloc (base, sizeof (*base) * (newcnt)); \ 290 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
172 init (base + cur, newcnt - cur); \ 291 init (base + cur, newcnt - cur); \
173 cur = newcnt; \ 292 cur = newcnt; \
174 } 293 }
294
295#define array_slim(type,stem) \
296 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
297 { \
298 stem ## max = array_roundsize (stem ## cnt >> 1); \
299 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
300 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
301 }
302
303/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
304/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
305#define array_free_microshit(stem) \
306 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
307
308#define array_free(stem, idx) \
309 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175 310
176/*****************************************************************************/ 311/*****************************************************************************/
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;
187 312
188static void 313static void
189anfds_init (ANFD *base, int count) 314anfds_init (ANFD *base, int count)
190{ 315{
191 while (count--) 316 while (count--)
196 321
197 ++base; 322 ++base;
198 } 323 }
199} 324}
200 325
201typedef struct 326void
327ev_feed_event (EV_P_ void *w, int revents)
202{ 328{
203 W w; 329 W w_ = (W)w;
204 int events;
205} ANPENDING;
206 330
207static ANPENDING *pendings [NUMPRI];
208static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210static void
211event (W w, int events)
212{
213 if (w->pending) 331 if (w_->pending)
214 { 332 {
215 pendings [ABSPRI (w)][w->pending - 1].events |= events; 333 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
216 return; 334 return;
217 } 335 }
218 336
219 w->pending = ++pendingcnt [ABSPRI (w)]; 337 w_->pending = ++pendingcnt [ABSPRI (w_)];
220 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 338 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
221 pendings [ABSPRI (w)][w->pending - 1].w = w; 339 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
222 pendings [ABSPRI (w)][w->pending - 1].events = events; 340 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
223} 341}
224 342
225static void 343static void
226queue_events (W *events, int eventcnt, int type) 344queue_events (EV_P_ W *events, int eventcnt, int type)
227{ 345{
228 int i; 346 int i;
229 347
230 for (i = 0; i < eventcnt; ++i) 348 for (i = 0; i < eventcnt; ++i)
231 event (events [i], type); 349 ev_feed_event (EV_A_ events [i], type);
232} 350}
233 351
234static void 352inline void
235fd_event (int fd, int events) 353fd_event (EV_P_ int fd, int revents)
236{ 354{
237 ANFD *anfd = anfds + fd; 355 ANFD *anfd = anfds + fd;
238 struct ev_io *w; 356 struct ev_io *w;
239 357
240 for (w = anfd->head; w; w = w->next) 358 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241 { 359 {
242 int ev = w->events & events; 360 int ev = w->events & revents;
243 361
244 if (ev) 362 if (ev)
245 event ((W)w, ev); 363 ev_feed_event (EV_A_ (W)w, ev);
246 } 364 }
365}
366
367void
368ev_feed_fd_event (EV_P_ int fd, int revents)
369{
370 fd_event (EV_A_ fd, revents);
247} 371}
248 372
249/*****************************************************************************/ 373/*****************************************************************************/
250 374
251static int *fdchanges;
252static int fdchangemax, fdchangecnt;
253
254static void 375static void
255fd_reify (void) 376fd_reify (EV_P)
256{ 377{
257 int i; 378 int i;
258 379
259 for (i = 0; i < fdchangecnt; ++i) 380 for (i = 0; i < fdchangecnt; ++i)
260 { 381 {
262 ANFD *anfd = anfds + fd; 383 ANFD *anfd = anfds + fd;
263 struct ev_io *w; 384 struct ev_io *w;
264 385
265 int events = 0; 386 int events = 0;
266 387
267 for (w = anfd->head; w; w = w->next) 388 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268 events |= w->events; 389 events |= w->events;
269 390
270 anfd->reify = 0; 391 anfd->reify = 0;
271 392
272 if (anfd->events != events)
273 {
274 method_modify (fd, anfd->events, events); 393 method_modify (EV_A_ fd, anfd->events, events);
275 anfd->events = events; 394 anfd->events = events;
276 }
277 } 395 }
278 396
279 fdchangecnt = 0; 397 fdchangecnt = 0;
280} 398}
281 399
282static void 400static void
283fd_change (int fd) 401fd_change (EV_P_ int fd)
284{ 402{
285 if (anfds [fd].reify || fdchangecnt < 0) 403 if (anfds [fd].reify)
286 return; 404 return;
287 405
288 anfds [fd].reify = 1; 406 anfds [fd].reify = 1;
289 407
290 ++fdchangecnt; 408 ++fdchangecnt;
291 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 409 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
292 fdchanges [fdchangecnt - 1] = fd; 410 fdchanges [fdchangecnt - 1] = fd;
293} 411}
294 412
295static void 413static void
296fd_kill (int fd) 414fd_kill (EV_P_ int fd)
297{ 415{
298 struct ev_io *w; 416 struct ev_io *w;
299 417
300 printf ("killing fd %d\n", fd);//D
301 while ((w = anfds [fd].head)) 418 while ((w = (struct ev_io *)anfds [fd].head))
302 { 419 {
303 ev_io_stop (w); 420 ev_io_stop (EV_A_ w);
304 event ((W)w, EV_ERROR | EV_READ | EV_WRITE); 421 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305 } 422 }
423}
424
425static int
426fd_valid (int fd)
427{
428#ifdef WIN32
429 return !!win32_get_osfhandle (fd);
430#else
431 return fcntl (fd, F_GETFD) != -1;
432#endif
306} 433}
307 434
308/* called on EBADF to verify fds */ 435/* called on EBADF to verify fds */
309static void 436static void
310fd_ebadf (void) 437fd_ebadf (EV_P)
311{ 438{
312 int fd; 439 int fd;
313 440
314 for (fd = 0; fd < anfdmax; ++fd) 441 for (fd = 0; fd < anfdmax; ++fd)
315 if (anfds [fd].events) 442 if (anfds [fd].events)
316 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 443 if (!fd_valid (fd) == -1 && errno == EBADF)
317 fd_kill (fd); 444 fd_kill (EV_A_ fd);
318} 445}
319 446
320/* called on ENOMEM in select/poll to kill some fds and retry */ 447/* called on ENOMEM in select/poll to kill some fds and retry */
321static void 448static void
322fd_enomem (void) 449fd_enomem (EV_P)
323{ 450{
324 int fd = anfdmax; 451 int fd;
325 452
326 while (fd--) 453 for (fd = anfdmax; fd--; )
327 if (anfds [fd].events) 454 if (anfds [fd].events)
328 { 455 {
329 close (fd);
330 fd_kill (fd); 456 fd_kill (EV_A_ fd);
331 return; 457 return;
332 } 458 }
333} 459}
334 460
461/* usually called after fork if method needs to re-arm all fds from scratch */
462static void
463fd_rearm_all (EV_P)
464{
465 int fd;
466
467 /* this should be highly optimised to not do anything but set a flag */
468 for (fd = 0; fd < anfdmax; ++fd)
469 if (anfds [fd].events)
470 {
471 anfds [fd].events = 0;
472 fd_change (EV_A_ fd);
473 }
474}
475
335/*****************************************************************************/ 476/*****************************************************************************/
336 477
337static struct ev_timer **timers;
338static int timermax, timercnt;
339
340static struct ev_periodic **periodics;
341static int periodicmax, periodiccnt;
342
343static void 478static void
344upheap (WT *timers, int k) 479upheap (WT *heap, int k)
345{ 480{
346 WT w = timers [k]; 481 WT w = heap [k];
347 482
348 while (k && timers [k >> 1]->at > w->at) 483 while (k && heap [k >> 1]->at > w->at)
349 { 484 {
350 timers [k] = timers [k >> 1]; 485 heap [k] = heap [k >> 1];
351 timers [k]->active = k + 1; 486 ((W)heap [k])->active = k + 1;
352 k >>= 1; 487 k >>= 1;
353 } 488 }
354 489
355 timers [k] = w; 490 heap [k] = w;
356 timers [k]->active = k + 1; 491 ((W)heap [k])->active = k + 1;
357 492
358} 493}
359 494
360static void 495static void
361downheap (WT *timers, int N, int k) 496downheap (WT *heap, int N, int k)
362{ 497{
363 WT w = timers [k]; 498 WT w = heap [k];
364 499
365 while (k < (N >> 1)) 500 while (k < (N >> 1))
366 { 501 {
367 int j = k << 1; 502 int j = k << 1;
368 503
369 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 504 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370 ++j; 505 ++j;
371 506
372 if (w->at <= timers [j]->at) 507 if (w->at <= heap [j]->at)
373 break; 508 break;
374 509
375 timers [k] = timers [j]; 510 heap [k] = heap [j];
376 timers [k]->active = k + 1; 511 ((W)heap [k])->active = k + 1;
377 k = j; 512 k = j;
378 } 513 }
379 514
380 timers [k] = w; 515 heap [k] = w;
381 timers [k]->active = k + 1; 516 ((W)heap [k])->active = k + 1;
382} 517}
383 518
384/*****************************************************************************/ 519/*****************************************************************************/
385 520
386typedef struct 521typedef struct
387{ 522{
388 struct ev_signal *head; 523 WL head;
389 sig_atomic_t volatile gotsig; 524 sig_atomic_t volatile gotsig;
390} ANSIG; 525} ANSIG;
391 526
392static ANSIG *signals; 527static ANSIG *signals;
393static int signalmax; 528static int signalmax;
409} 544}
410 545
411static void 546static void
412sighandler (int signum) 547sighandler (int signum)
413{ 548{
549#if WIN32
550 signal (signum, sighandler);
551#endif
552
414 signals [signum - 1].gotsig = 1; 553 signals [signum - 1].gotsig = 1;
415 554
416 if (!gotsig) 555 if (!gotsig)
417 { 556 {
418 int old_errno = errno; 557 int old_errno = errno;
419 gotsig = 1; 558 gotsig = 1;
559#ifdef WIN32
560 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
561#else
420 write (sigpipe [1], &signum, 1); 562 write (sigpipe [1], &signum, 1);
563#endif
421 errno = old_errno; 564 errno = old_errno;
422 } 565 }
423} 566}
424 567
568void
569ev_feed_signal_event (EV_P_ int signum)
570{
571 WL w;
572
573#if EV_MULTIPLICITY
574 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
575#endif
576
577 --signum;
578
579 if (signum < 0 || signum >= signalmax)
580 return;
581
582 signals [signum].gotsig = 0;
583
584 for (w = signals [signum].head; w; w = w->next)
585 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
586}
587
425static void 588static void
426sigcb (struct ev_io *iow, int revents) 589sigcb (EV_P_ struct ev_io *iow, int revents)
427{ 590{
428 struct ev_signal *w;
429 int signum; 591 int signum;
430 592
593#ifdef WIN32
594 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
595#else
431 read (sigpipe [0], &revents, 1); 596 read (sigpipe [0], &revents, 1);
597#endif
432 gotsig = 0; 598 gotsig = 0;
433 599
434 for (signum = signalmax; signum--; ) 600 for (signum = signalmax; signum--; )
435 if (signals [signum].gotsig) 601 if (signals [signum].gotsig)
436 { 602 ev_feed_signal_event (EV_A_ signum + 1);
437 signals [signum].gotsig = 0;
438
439 for (w = signals [signum].head; w; w = w->next)
440 event ((W)w, EV_SIGNAL);
441 }
442} 603}
443 604
444static void 605static void
445siginit (void) 606siginit (EV_P)
446{ 607{
447#ifndef WIN32 608#ifndef WIN32
448 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 609 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); 610 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450 611
452 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 613 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 614 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454#endif 615#endif
455 616
456 ev_io_set (&sigev, sigpipe [0], EV_READ); 617 ev_io_set (&sigev, sigpipe [0], EV_READ);
457 ev_io_start (&sigev); 618 ev_io_start (EV_A_ &sigev);
619 ev_unref (EV_A); /* child watcher should not keep loop alive */
458} 620}
459 621
460/*****************************************************************************/ 622/*****************************************************************************/
461 623
462static struct ev_idle **idles;
463static int idlemax, idlecnt;
464
465static struct ev_prepare **prepares;
466static int preparemax, preparecnt;
467
468static struct ev_check **checks;
469static int checkmax, checkcnt;
470
471/*****************************************************************************/
472
473static struct ev_child *childs [PID_HASHSIZE]; 624static struct ev_child *childs [PID_HASHSIZE];
625
626#ifndef WIN32
627
474static struct ev_signal childev; 628static struct ev_signal childev;
475
476#ifndef WIN32
477 629
478#ifndef WCONTINUED 630#ifndef WCONTINUED
479# define WCONTINUED 0 631# define WCONTINUED 0
480#endif 632#endif
481 633
482static void 634static void
483child_reap (struct ev_signal *sw, int chain, int pid, int status) 635child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484{ 636{
485 struct ev_child *w; 637 struct ev_child *w;
486 638
487 for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next) 639 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
488 if (w->pid == pid || !w->pid) 640 if (w->pid == pid || !w->pid)
489 { 641 {
490 w->priority = sw->priority; /* need to do it *now* */ 642 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491 w->rpid = pid; 643 w->rpid = pid;
492 w->rstatus = status; 644 w->rstatus = status;
493 printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494 event ((W)w, EV_CHILD); 645 ev_feed_event (EV_A_ (W)w, EV_CHILD);
495 } 646 }
496} 647}
497 648
498static void 649static void
499childcb (struct ev_signal *sw, int revents) 650childcb (EV_P_ struct ev_signal *sw, int revents)
500{ 651{
501 int pid, status; 652 int pid, status;
502 653
503 printf ("chld %x\n", revents);//D
504 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 654 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505 { 655 {
506 /* make sure we are called again until all childs have been reaped */ 656 /* make sure we are called again until all childs have been reaped */
507 event ((W)sw, EV_SIGNAL); 657 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
508 658
509 child_reap (sw, pid, pid, status); 659 child_reap (EV_A_ sw, pid, pid, status);
510 child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 660 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511 } 661 }
512} 662}
513 663
514#endif 664#endif
515 665
540 return EV_VERSION_MINOR; 690 return EV_VERSION_MINOR;
541} 691}
542 692
543/* return true if we are running with elevated privileges and should ignore env variables */ 693/* return true if we are running with elevated privileges and should ignore env variables */
544static int 694static int
545enable_secure () 695enable_secure (void)
546{ 696{
547#ifdef WIN32 697#ifdef WIN32
548 return 0; 698 return 0;
549#else 699#else
550 return getuid () != geteuid () 700 return getuid () != geteuid ()
551 || getgid () != getegid (); 701 || getgid () != getegid ();
552#endif 702#endif
553} 703}
554 704
555int ev_init (int methods) 705int
706ev_method (EV_P)
556{ 707{
708 return method;
709}
710
711static void
712loop_init (EV_P_ int methods)
713{
557 if (!ev_method) 714 if (!method)
558 { 715 {
559#if EV_USE_MONOTONIC 716#if EV_USE_MONOTONIC
560 { 717 {
561 struct timespec ts; 718 struct timespec ts;
562 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 719 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
563 have_monotonic = 1; 720 have_monotonic = 1;
564 } 721 }
565#endif 722#endif
566 723
567 ev_now = ev_time (); 724 rt_now = ev_time ();
568 now = get_clock (); 725 mn_now = get_clock ();
569 now_floor = now; 726 now_floor = mn_now;
570 diff = ev_now - now; 727 rtmn_diff = rt_now - mn_now;
571
572 if (pipe (sigpipe))
573 return 0;
574 728
575 if (methods == EVMETHOD_AUTO) 729 if (methods == EVMETHOD_AUTO)
576 if (!enable_secure () && getenv ("LIBEV_METHODS")) 730 if (!enable_secure () && getenv ("LIBEV_METHODS"))
577 methods = atoi (getenv ("LIBEV_METHODS")); 731 methods = atoi (getenv ("LIBEV_METHODS"));
578 else 732 else
579 methods = EVMETHOD_ANY; 733 methods = EVMETHOD_ANY;
580 734
581 ev_method = 0; 735 method = 0;
736#if EV_USE_WIN32
737 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
738#endif
582#if EV_USE_KQUEUE 739#if EV_USE_KQUEUE
583 if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); 740 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
584#endif 741#endif
585#if EV_USE_EPOLL 742#if EV_USE_EPOLL
586 if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); 743 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
587#endif 744#endif
588#if EV_USE_POLL 745#if EV_USE_POLL
589 if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); 746 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
590#endif 747#endif
591#if EV_USE_SELECT 748#if EV_USE_SELECT
592 if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); 749 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
593#endif 750#endif
594 751
752 ev_watcher_init (&sigev, sigcb);
753 ev_set_priority (&sigev, EV_MAXPRI);
754 }
755}
756
757void
758loop_destroy (EV_P)
759{
760 int i;
761
762#if EV_USE_WIN32
763 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
764#endif
765#if EV_USE_KQUEUE
766 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
767#endif
768#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
770#endif
771#if EV_USE_POLL
772 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
773#endif
774#if EV_USE_SELECT
775 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
776#endif
777
778 for (i = NUMPRI; i--; )
779 array_free (pending, [i]);
780
781 /* have to use the microsoft-never-gets-it-right macro */
782 array_free_microshit (fdchange);
783 array_free_microshit (timer);
784 array_free_microshit (periodic);
785 array_free_microshit (idle);
786 array_free_microshit (prepare);
787 array_free_microshit (check);
788
789 method = 0;
790}
791
792static void
793loop_fork (EV_P)
794{
795#if EV_USE_EPOLL
796 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
797#endif
798#if EV_USE_KQUEUE
799 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
800#endif
801
802 if (ev_is_active (&sigev))
803 {
804 /* default loop */
805
806 ev_ref (EV_A);
807 ev_io_stop (EV_A_ &sigev);
808 close (sigpipe [0]);
809 close (sigpipe [1]);
810
811 while (pipe (sigpipe))
812 syserr ("(libev) error creating pipe");
813
814 siginit (EV_A);
815 }
816
817 postfork = 0;
818}
819
820#if EV_MULTIPLICITY
821struct ev_loop *
822ev_loop_new (int methods)
823{
824 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
825
826 memset (loop, 0, sizeof (struct ev_loop));
827
828 loop_init (EV_A_ methods);
829
830 if (ev_method (EV_A))
831 return loop;
832
833 return 0;
834}
835
836void
837ev_loop_destroy (EV_P)
838{
839 loop_destroy (EV_A);
840 ev_free (loop);
841}
842
843void
844ev_loop_fork (EV_P)
845{
846 postfork = 1;
847}
848
849#endif
850
851#if EV_MULTIPLICITY
852struct ev_loop *
853#else
854int
855#endif
856ev_default_loop (int methods)
857{
858 if (sigpipe [0] == sigpipe [1])
859 if (pipe (sigpipe))
860 return 0;
861
862 if (!default_loop)
863 {
864#if EV_MULTIPLICITY
865 struct ev_loop *loop = default_loop = &default_loop_struct;
866#else
867 default_loop = 1;
868#endif
869
870 loop_init (EV_A_ methods);
871
595 if (ev_method) 872 if (ev_method (EV_A))
596 { 873 {
597 ev_watcher_init (&sigev, sigcb);
598 ev_set_priority (&sigev, EV_MAXPRI);
599 siginit (); 874 siginit (EV_A);
600 875
601#ifndef WIN32 876#ifndef WIN32
602 ev_signal_init (&childev, childcb, SIGCHLD); 877 ev_signal_init (&childev, childcb, SIGCHLD);
603 ev_set_priority (&childev, EV_MAXPRI); 878 ev_set_priority (&childev, EV_MAXPRI);
604 ev_signal_start (&childev); 879 ev_signal_start (EV_A_ &childev);
880 ev_unref (EV_A); /* child watcher should not keep loop alive */
605#endif 881#endif
606 } 882 }
883 else
884 default_loop = 0;
607 } 885 }
608 886
609 return ev_method; 887 return default_loop;
888}
889
890void
891ev_default_destroy (void)
892{
893#if EV_MULTIPLICITY
894 struct ev_loop *loop = default_loop;
895#endif
896
897#ifndef WIN32
898 ev_ref (EV_A); /* child watcher */
899 ev_signal_stop (EV_A_ &childev);
900#endif
901
902 ev_ref (EV_A); /* signal watcher */
903 ev_io_stop (EV_A_ &sigev);
904
905 close (sigpipe [0]); sigpipe [0] = 0;
906 close (sigpipe [1]); sigpipe [1] = 0;
907
908 loop_destroy (EV_A);
909}
910
911void
912ev_default_fork (void)
913{
914#if EV_MULTIPLICITY
915 struct ev_loop *loop = default_loop;
916#endif
917
918 if (method)
919 postfork = 1;
610} 920}
611 921
612/*****************************************************************************/ 922/*****************************************************************************/
613 923
614void
615ev_fork_prepare (void)
616{
617 /* nop */
618}
619
620void
621ev_fork_parent (void)
622{
623 /* nop */
624}
625
626void
627ev_fork_child (void)
628{
629#if EV_USE_EPOLL
630 if (ev_method == EVMETHOD_EPOLL)
631 epoll_postfork_child ();
632#endif
633
634 ev_io_stop (&sigev);
635 close (sigpipe [0]);
636 close (sigpipe [1]);
637 pipe (sigpipe);
638 siginit ();
639}
640
641/*****************************************************************************/
642
643static void 924static int
925any_pending (EV_P)
926{
927 int pri;
928
929 for (pri = NUMPRI; pri--; )
930 if (pendingcnt [pri])
931 return 1;
932
933 return 0;
934}
935
936static void
644call_pending (void) 937call_pending (EV_P)
645{ 938{
646 int pri; 939 int pri;
647 940
648 for (pri = NUMPRI; pri--; ) 941 for (pri = NUMPRI; pri--; )
649 while (pendingcnt [pri]) 942 while (pendingcnt [pri])
651 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 944 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
652 945
653 if (p->w) 946 if (p->w)
654 { 947 {
655 p->w->pending = 0; 948 p->w->pending = 0;
656 p->w->cb (p->w, p->events); 949 p->w->cb (EV_A_ p->w, p->events);
657 } 950 }
658 } 951 }
659} 952}
660 953
661static void 954static void
662timers_reify (void) 955timers_reify (EV_P)
663{ 956{
664 while (timercnt && timers [0]->at <= now) 957 while (timercnt && ((WT)timers [0])->at <= mn_now)
665 { 958 {
666 struct ev_timer *w = timers [0]; 959 struct ev_timer *w = timers [0];
960
961 assert (("inactive timer on timer heap detected", ev_is_active (w)));
667 962
668 /* first reschedule or stop timer */ 963 /* first reschedule or stop timer */
669 if (w->repeat) 964 if (w->repeat)
670 { 965 {
671 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 966 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
672 w->at = now + w->repeat; 967 ((WT)w)->at = mn_now + w->repeat;
673 downheap ((WT *)timers, timercnt, 0); 968 downheap ((WT *)timers, timercnt, 0);
674 } 969 }
675 else 970 else
676 ev_timer_stop (w); /* nonrepeating: stop timer */ 971 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
677 972
678 event ((W)w, EV_TIMEOUT); 973 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
679 } 974 }
680} 975}
681 976
682static void 977static void
683periodics_reify (void) 978periodics_reify (EV_P)
684{ 979{
685 while (periodiccnt && periodics [0]->at <= ev_now) 980 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
686 { 981 {
687 struct ev_periodic *w = periodics [0]; 982 struct ev_periodic *w = periodics [0];
688 983
984 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
985
689 /* first reschedule or stop timer */ 986 /* first reschedule or stop timer */
690 if (w->interval) 987 if (w->reschedule_cb)
691 { 988 {
989 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
990
991 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
992 downheap ((WT *)periodics, periodiccnt, 0);
993 }
994 else if (w->interval)
995 {
692 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 996 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
693 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 997 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
694 downheap ((WT *)periodics, periodiccnt, 0); 998 downheap ((WT *)periodics, periodiccnt, 0);
695 } 999 }
696 else 1000 else
697 ev_periodic_stop (w); /* nonrepeating: stop timer */ 1001 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
698 1002
699 event ((W)w, EV_PERIODIC); 1003 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
700 } 1004 }
701} 1005}
702 1006
703static void 1007static void
704periodics_reschedule (ev_tstamp diff) 1008periodics_reschedule (EV_P)
705{ 1009{
706 int i; 1010 int i;
707 1011
708 /* adjust periodics after time jump */ 1012 /* adjust periodics after time jump */
709 for (i = 0; i < periodiccnt; ++i) 1013 for (i = 0; i < periodiccnt; ++i)
710 { 1014 {
711 struct ev_periodic *w = periodics [i]; 1015 struct ev_periodic *w = periodics [i];
712 1016
1017 if (w->reschedule_cb)
1018 ((WT)w)->at = w->reschedule_cb (w, rt_now);
713 if (w->interval) 1019 else if (w->interval)
714 {
715 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1020 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
716
717 if (fabs (diff) >= 1e-4)
718 {
719 ev_periodic_stop (w);
720 ev_periodic_start (w);
721
722 i = 0; /* restart loop, inefficient, but time jumps should be rare */
723 }
724 }
725 } 1021 }
726}
727 1022
728static int 1023 /* now rebuild the heap */
1024 for (i = periodiccnt >> 1; i--; )
1025 downheap ((WT *)periodics, periodiccnt, i);
1026}
1027
1028inline int
729time_update_monotonic (void) 1029time_update_monotonic (EV_P)
730{ 1030{
731 now = get_clock (); 1031 mn_now = get_clock ();
732 1032
733 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) 1033 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
734 { 1034 {
735 ev_now = now + diff; 1035 rt_now = rtmn_diff + mn_now;
736 return 0; 1036 return 0;
737 } 1037 }
738 else 1038 else
739 { 1039 {
740 now_floor = now; 1040 now_floor = mn_now;
741 ev_now = ev_time (); 1041 rt_now = ev_time ();
742 return 1; 1042 return 1;
743 } 1043 }
744} 1044}
745 1045
746static void 1046static void
747time_update (void) 1047time_update (EV_P)
748{ 1048{
749 int i; 1049 int i;
750 1050
751#if EV_USE_MONOTONIC 1051#if EV_USE_MONOTONIC
752 if (expect_true (have_monotonic)) 1052 if (expect_true (have_monotonic))
753 { 1053 {
754 if (time_update_monotonic ()) 1054 if (time_update_monotonic (EV_A))
755 { 1055 {
756 ev_tstamp odiff = diff; 1056 ev_tstamp odiff = rtmn_diff;
757 1057
758 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1058 for (i = 4; --i; ) /* loop a few times, before making important decisions */
759 { 1059 {
760 diff = ev_now - now; 1060 rtmn_diff = rt_now - mn_now;
761 1061
762 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1062 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
763 return; /* all is well */ 1063 return; /* all is well */
764 1064
765 ev_now = ev_time (); 1065 rt_now = ev_time ();
766 now = get_clock (); 1066 mn_now = get_clock ();
767 now_floor = now; 1067 now_floor = mn_now;
768 } 1068 }
769 1069
770 periodics_reschedule (diff - odiff); 1070 periodics_reschedule (EV_A);
771 /* no timer adjustment, as the monotonic clock doesn't jump */ 1071 /* no timer adjustment, as the monotonic clock doesn't jump */
1072 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
772 } 1073 }
773 } 1074 }
774 else 1075 else
775#endif 1076#endif
776 { 1077 {
777 ev_now = ev_time (); 1078 rt_now = ev_time ();
778 1079
779 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1080 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
780 { 1081 {
781 periodics_reschedule (ev_now - now); 1082 periodics_reschedule (EV_A);
782 1083
783 /* adjust timers. this is easy, as the offset is the same for all */ 1084 /* adjust timers. this is easy, as the offset is the same for all */
784 for (i = 0; i < timercnt; ++i) 1085 for (i = 0; i < timercnt; ++i)
785 timers [i]->at += diff; 1086 ((WT)timers [i])->at += rt_now - mn_now;
786 } 1087 }
787 1088
788 now = ev_now; 1089 mn_now = rt_now;
789 } 1090 }
790} 1091}
791 1092
792int ev_loop_done; 1093void
1094ev_ref (EV_P)
1095{
1096 ++activecnt;
1097}
793 1098
1099void
1100ev_unref (EV_P)
1101{
1102 --activecnt;
1103}
1104
1105static int loop_done;
1106
1107void
794void ev_loop (int flags) 1108ev_loop (EV_P_ int flags)
795{ 1109{
796 double block; 1110 double block;
797 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1111 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
798 1112
799 do 1113 do
800 { 1114 {
801 /* queue check watchers (and execute them) */ 1115 /* queue check watchers (and execute them) */
802 if (expect_false (preparecnt)) 1116 if (expect_false (preparecnt))
803 { 1117 {
804 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1118 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
805 call_pending (); 1119 call_pending (EV_A);
806 } 1120 }
807 1121
1122 /* we might have forked, so reify kernel state if necessary */
1123 if (expect_false (postfork))
1124 loop_fork (EV_A);
1125
808 /* update fd-related kernel structures */ 1126 /* update fd-related kernel structures */
809 fd_reify (); 1127 fd_reify (EV_A);
810 1128
811 /* calculate blocking time */ 1129 /* calculate blocking time */
812 1130
813 /* we only need this for !monotonic clockor timers, but as we basically 1131 /* we only need this for !monotonic clock or timers, but as we basically
814 always have timers, we just calculate it always */ 1132 always have timers, we just calculate it always */
815#if EV_USE_MONOTONIC 1133#if EV_USE_MONOTONIC
816 if (expect_true (have_monotonic)) 1134 if (expect_true (have_monotonic))
817 time_update_monotonic (); 1135 time_update_monotonic (EV_A);
818 else 1136 else
819#endif 1137#endif
820 { 1138 {
821 ev_now = ev_time (); 1139 rt_now = ev_time ();
822 now = ev_now; 1140 mn_now = rt_now;
823 } 1141 }
824 1142
825 if (flags & EVLOOP_NONBLOCK || idlecnt) 1143 if (flags & EVLOOP_NONBLOCK || idlecnt)
826 block = 0.; 1144 block = 0.;
827 else 1145 else
828 { 1146 {
829 block = MAX_BLOCKTIME; 1147 block = MAX_BLOCKTIME;
830 1148
831 if (timercnt) 1149 if (timercnt)
832 { 1150 {
833 ev_tstamp to = timers [0]->at - now + method_fudge; 1151 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
834 if (block > to) block = to; 1152 if (block > to) block = to;
835 } 1153 }
836 1154
837 if (periodiccnt) 1155 if (periodiccnt)
838 { 1156 {
839 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1157 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
840 if (block > to) block = to; 1158 if (block > to) block = to;
841 } 1159 }
842 1160
843 if (block < 0.) block = 0.; 1161 if (block < 0.) block = 0.;
844 } 1162 }
845 1163
846 method_poll (block); 1164 method_poll (EV_A_ block);
847 1165
848 /* update ev_now, do magic */ 1166 /* update rt_now, do magic */
849 time_update (); 1167 time_update (EV_A);
850 1168
851 /* queue pending timers and reschedule them */ 1169 /* queue pending timers and reschedule them */
852 timers_reify (); /* relative timers called last */ 1170 timers_reify (EV_A); /* relative timers called last */
853 periodics_reify (); /* absolute timers called first */ 1171 periodics_reify (EV_A); /* absolute timers called first */
854 1172
855 /* queue idle watchers unless io or timers are pending */ 1173 /* queue idle watchers unless io or timers are pending */
856 if (!pendingcnt) 1174 if (idlecnt && !any_pending (EV_A))
857 queue_events ((W *)idles, idlecnt, EV_IDLE); 1175 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
858 1176
859 /* queue check watchers, to be executed first */ 1177 /* queue check watchers, to be executed first */
860 if (checkcnt) 1178 if (checkcnt)
861 queue_events ((W *)checks, checkcnt, EV_CHECK); 1179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
862 1180
863 call_pending (); 1181 call_pending (EV_A);
864 } 1182 }
865 while (!ev_loop_done); 1183 while (activecnt && !loop_done);
866 1184
867 if (ev_loop_done != 2) 1185 if (loop_done != 2)
868 ev_loop_done = 0; 1186 loop_done = 0;
1187}
1188
1189void
1190ev_unloop (EV_P_ int how)
1191{
1192 loop_done = how;
869} 1193}
870 1194
871/*****************************************************************************/ 1195/*****************************************************************************/
872 1196
873static void 1197inline void
874wlist_add (WL *head, WL elem) 1198wlist_add (WL *head, WL elem)
875{ 1199{
876 elem->next = *head; 1200 elem->next = *head;
877 *head = elem; 1201 *head = elem;
878} 1202}
879 1203
880static void 1204inline void
881wlist_del (WL *head, WL elem) 1205wlist_del (WL *head, WL elem)
882{ 1206{
883 while (*head) 1207 while (*head)
884 { 1208 {
885 if (*head == elem) 1209 if (*head == elem)
890 1214
891 head = &(*head)->next; 1215 head = &(*head)->next;
892 } 1216 }
893} 1217}
894 1218
895static void 1219inline void
896ev_clear_pending (W w) 1220ev_clear_pending (EV_P_ W w)
897{ 1221{
898 if (w->pending) 1222 if (w->pending)
899 { 1223 {
900 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1224 pendings [ABSPRI (w)][w->pending - 1].w = 0;
901 w->pending = 0; 1225 w->pending = 0;
902 } 1226 }
903} 1227}
904 1228
905static void 1229inline void
906ev_start (W w, int active) 1230ev_start (EV_P_ W w, int active)
907{ 1231{
908 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1232 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
909 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1233 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
910 1234
911 w->active = active; 1235 w->active = active;
1236 ev_ref (EV_A);
912} 1237}
913 1238
914static void 1239inline void
915ev_stop (W w) 1240ev_stop (EV_P_ W w)
916{ 1241{
1242 ev_unref (EV_A);
917 w->active = 0; 1243 w->active = 0;
918} 1244}
919 1245
920/*****************************************************************************/ 1246/*****************************************************************************/
921 1247
922void 1248void
923ev_io_start (struct ev_io *w) 1249ev_io_start (EV_P_ struct ev_io *w)
924{ 1250{
925 int fd = w->fd; 1251 int fd = w->fd;
926 1252
927 if (ev_is_active (w)) 1253 if (ev_is_active (w))
928 return; 1254 return;
929 1255
930 assert (("ev_io_start called with negative fd", fd >= 0)); 1256 assert (("ev_io_start called with negative fd", fd >= 0));
931 1257
932 ev_start ((W)w, 1); 1258 ev_start (EV_A_ (W)w, 1);
933 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1259 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
934 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1260 wlist_add ((WL *)&anfds[fd].head, (WL)w);
935 1261
936 fd_change (fd); 1262 fd_change (EV_A_ fd);
937} 1263}
938 1264
939void 1265void
940ev_io_stop (struct ev_io *w) 1266ev_io_stop (EV_P_ struct ev_io *w)
941{ 1267{
942 ev_clear_pending ((W)w); 1268 ev_clear_pending (EV_A_ (W)w);
943 if (!ev_is_active (w)) 1269 if (!ev_is_active (w))
944 return; 1270 return;
945 1271
946 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1272 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
947 ev_stop ((W)w); 1273 ev_stop (EV_A_ (W)w);
948 1274
949 fd_change (w->fd); 1275 fd_change (EV_A_ w->fd);
950} 1276}
951 1277
952void 1278void
953ev_timer_start (struct ev_timer *w) 1279ev_timer_start (EV_P_ struct ev_timer *w)
954{ 1280{
955 if (ev_is_active (w)) 1281 if (ev_is_active (w))
956 return; 1282 return;
957 1283
958 w->at += now; 1284 ((WT)w)->at += mn_now;
959 1285
960 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1286 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
961 1287
962 ev_start ((W)w, ++timercnt); 1288 ev_start (EV_A_ (W)w, ++timercnt);
963 array_needsize (timers, timermax, timercnt, ); 1289 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
964 timers [timercnt - 1] = w; 1290 timers [timercnt - 1] = w;
965 upheap ((WT *)timers, timercnt - 1); 1291 upheap ((WT *)timers, timercnt - 1);
966}
967 1292
1293 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1294}
1295
968void 1296void
969ev_timer_stop (struct ev_timer *w) 1297ev_timer_stop (EV_P_ struct ev_timer *w)
970{ 1298{
971 ev_clear_pending ((W)w); 1299 ev_clear_pending (EV_A_ (W)w);
972 if (!ev_is_active (w)) 1300 if (!ev_is_active (w))
973 return; 1301 return;
974 1302
1303 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1304
975 if (w->active < timercnt--) 1305 if (((W)w)->active < timercnt--)
976 { 1306 {
977 timers [w->active - 1] = timers [timercnt]; 1307 timers [((W)w)->active - 1] = timers [timercnt];
978 downheap ((WT *)timers, timercnt, w->active - 1); 1308 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
979 } 1309 }
980 1310
981 w->at = w->repeat; 1311 ((WT)w)->at = w->repeat;
982 1312
983 ev_stop ((W)w); 1313 ev_stop (EV_A_ (W)w);
984} 1314}
985 1315
986void 1316void
987ev_timer_again (struct ev_timer *w) 1317ev_timer_again (EV_P_ struct ev_timer *w)
988{ 1318{
989 if (ev_is_active (w)) 1319 if (ev_is_active (w))
990 { 1320 {
991 if (w->repeat) 1321 if (w->repeat)
992 { 1322 {
993 w->at = now + w->repeat; 1323 ((WT)w)->at = mn_now + w->repeat;
994 downheap ((WT *)timers, timercnt, w->active - 1); 1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
995 } 1325 }
996 else 1326 else
997 ev_timer_stop (w); 1327 ev_timer_stop (EV_A_ w);
998 } 1328 }
999 else if (w->repeat) 1329 else if (w->repeat)
1000 ev_timer_start (w); 1330 ev_timer_start (EV_A_ w);
1001} 1331}
1002 1332
1003void 1333void
1004ev_periodic_start (struct ev_periodic *w) 1334ev_periodic_start (EV_P_ struct ev_periodic *w)
1005{ 1335{
1006 if (ev_is_active (w)) 1336 if (ev_is_active (w))
1007 return; 1337 return;
1008 1338
1339 if (w->reschedule_cb)
1340 ((WT)w)->at = w->reschedule_cb (w, rt_now);
1341 else if (w->interval)
1342 {
1009 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1343 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1010
1011 /* this formula differs from the one in periodic_reify because we do not always round up */ 1344 /* this formula differs from the one in periodic_reify because we do not always round up */
1012 if (w->interval)
1013 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1345 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1346 }
1014 1347
1015 ev_start ((W)w, ++periodiccnt); 1348 ev_start (EV_A_ (W)w, ++periodiccnt);
1016 array_needsize (periodics, periodicmax, periodiccnt, ); 1349 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1017 periodics [periodiccnt - 1] = w; 1350 periodics [periodiccnt - 1] = w;
1018 upheap ((WT *)periodics, periodiccnt - 1); 1351 upheap ((WT *)periodics, periodiccnt - 1);
1019}
1020 1352
1353 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1354}
1355
1021void 1356void
1022ev_periodic_stop (struct ev_periodic *w) 1357ev_periodic_stop (EV_P_ struct ev_periodic *w)
1023{ 1358{
1024 ev_clear_pending ((W)w); 1359 ev_clear_pending (EV_A_ (W)w);
1025 if (!ev_is_active (w)) 1360 if (!ev_is_active (w))
1026 return; 1361 return;
1027 1362
1363 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1364
1028 if (w->active < periodiccnt--) 1365 if (((W)w)->active < periodiccnt--)
1029 { 1366 {
1030 periodics [w->active - 1] = periodics [periodiccnt]; 1367 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1031 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1368 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1032 } 1369 }
1033 1370
1034 ev_stop ((W)w); 1371 ev_stop (EV_A_ (W)w);
1372}
1373
1374void
1375ev_periodic_again (EV_P_ struct ev_periodic *w)
1376{
1377 ev_periodic_stop (EV_A_ w);
1378 ev_periodic_start (EV_A_ w);
1379}
1380
1381void
1382ev_idle_start (EV_P_ struct ev_idle *w)
1383{
1384 if (ev_is_active (w))
1385 return;
1386
1387 ev_start (EV_A_ (W)w, ++idlecnt);
1388 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1389 idles [idlecnt - 1] = w;
1390}
1391
1392void
1393ev_idle_stop (EV_P_ struct ev_idle *w)
1394{
1395 ev_clear_pending (EV_A_ (W)w);
1396 if (ev_is_active (w))
1397 return;
1398
1399 idles [((W)w)->active - 1] = idles [--idlecnt];
1400 ev_stop (EV_A_ (W)w);
1401}
1402
1403void
1404ev_prepare_start (EV_P_ struct ev_prepare *w)
1405{
1406 if (ev_is_active (w))
1407 return;
1408
1409 ev_start (EV_A_ (W)w, ++preparecnt);
1410 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1411 prepares [preparecnt - 1] = w;
1412}
1413
1414void
1415ev_prepare_stop (EV_P_ struct ev_prepare *w)
1416{
1417 ev_clear_pending (EV_A_ (W)w);
1418 if (ev_is_active (w))
1419 return;
1420
1421 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1422 ev_stop (EV_A_ (W)w);
1423}
1424
1425void
1426ev_check_start (EV_P_ struct ev_check *w)
1427{
1428 if (ev_is_active (w))
1429 return;
1430
1431 ev_start (EV_A_ (W)w, ++checkcnt);
1432 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1433 checks [checkcnt - 1] = w;
1434}
1435
1436void
1437ev_check_stop (EV_P_ struct ev_check *w)
1438{
1439 ev_clear_pending (EV_A_ (W)w);
1440 if (ev_is_active (w))
1441 return;
1442
1443 checks [((W)w)->active - 1] = checks [--checkcnt];
1444 ev_stop (EV_A_ (W)w);
1035} 1445}
1036 1446
1037#ifndef SA_RESTART 1447#ifndef SA_RESTART
1038# define SA_RESTART 0 1448# define SA_RESTART 0
1039#endif 1449#endif
1040 1450
1041void 1451void
1042ev_signal_start (struct ev_signal *w) 1452ev_signal_start (EV_P_ struct ev_signal *w)
1043{ 1453{
1454#if EV_MULTIPLICITY
1455 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1456#endif
1044 if (ev_is_active (w)) 1457 if (ev_is_active (w))
1045 return; 1458 return;
1046 1459
1047 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1460 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1048 1461
1049 ev_start ((W)w, 1); 1462 ev_start (EV_A_ (W)w, 1);
1050 array_needsize (signals, signalmax, w->signum, signals_init); 1463 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1051 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1464 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1052 1465
1053 if (!w->next) 1466 if (!((WL)w)->next)
1054 { 1467 {
1468#if WIN32
1469 signal (w->signum, sighandler);
1470#else
1055 struct sigaction sa; 1471 struct sigaction sa;
1056 sa.sa_handler = sighandler; 1472 sa.sa_handler = sighandler;
1057 sigfillset (&sa.sa_mask); 1473 sigfillset (&sa.sa_mask);
1058 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1474 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1059 sigaction (w->signum, &sa, 0); 1475 sigaction (w->signum, &sa, 0);
1476#endif
1060 } 1477 }
1061} 1478}
1062 1479
1063void 1480void
1064ev_signal_stop (struct ev_signal *w) 1481ev_signal_stop (EV_P_ struct ev_signal *w)
1065{ 1482{
1066 ev_clear_pending ((W)w); 1483 ev_clear_pending (EV_A_ (W)w);
1067 if (!ev_is_active (w)) 1484 if (!ev_is_active (w))
1068 return; 1485 return;
1069 1486
1070 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1487 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1071 ev_stop ((W)w); 1488 ev_stop (EV_A_ (W)w);
1072 1489
1073 if (!signals [w->signum - 1].head) 1490 if (!signals [w->signum - 1].head)
1074 signal (w->signum, SIG_DFL); 1491 signal (w->signum, SIG_DFL);
1075} 1492}
1076 1493
1077void 1494void
1078ev_idle_start (struct ev_idle *w) 1495ev_child_start (EV_P_ struct ev_child *w)
1079{ 1496{
1497#if EV_MULTIPLICITY
1498 assert (("child watchers are only supported in the default loop", loop == default_loop));
1499#endif
1080 if (ev_is_active (w)) 1500 if (ev_is_active (w))
1081 return; 1501 return;
1082 1502
1083 ev_start ((W)w, ++idlecnt); 1503 ev_start (EV_A_ (W)w, 1);
1084 array_needsize (idles, idlemax, idlecnt, ); 1504 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1085 idles [idlecnt - 1] = w;
1086} 1505}
1087 1506
1088void 1507void
1089ev_idle_stop (struct ev_idle *w) 1508ev_child_stop (EV_P_ struct ev_child *w)
1090{ 1509{
1091 ev_clear_pending ((W)w); 1510 ev_clear_pending (EV_A_ (W)w);
1092 if (ev_is_active (w)) 1511 if (ev_is_active (w))
1093 return; 1512 return;
1094 1513
1095 idles [w->active - 1] = idles [--idlecnt];
1096 ev_stop ((W)w);
1097}
1098
1099void
1100ev_prepare_start (struct ev_prepare *w)
1101{
1102 if (ev_is_active (w))
1103 return;
1104
1105 ev_start ((W)w, ++preparecnt);
1106 array_needsize (prepares, preparemax, preparecnt, );
1107 prepares [preparecnt - 1] = w;
1108}
1109
1110void
1111ev_prepare_stop (struct ev_prepare *w)
1112{
1113 ev_clear_pending ((W)w);
1114 if (ev_is_active (w))
1115 return;
1116
1117 prepares [w->active - 1] = prepares [--preparecnt];
1118 ev_stop ((W)w);
1119}
1120
1121void
1122ev_check_start (struct ev_check *w)
1123{
1124 if (ev_is_active (w))
1125 return;
1126
1127 ev_start ((W)w, ++checkcnt);
1128 array_needsize (checks, checkmax, checkcnt, );
1129 checks [checkcnt - 1] = w;
1130}
1131
1132void
1133ev_check_stop (struct ev_check *w)
1134{
1135 ev_clear_pending ((W)w);
1136 if (ev_is_active (w))
1137 return;
1138
1139 checks [w->active - 1] = checks [--checkcnt];
1140 ev_stop ((W)w);
1141}
1142
1143void
1144ev_child_start (struct ev_child *w)
1145{
1146 if (ev_is_active (w))
1147 return;
1148
1149 ev_start ((W)w, 1);
1150 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1151}
1152
1153void
1154ev_child_stop (struct ev_child *w)
1155{
1156 ev_clear_pending ((W)w);
1157 if (ev_is_active (w))
1158 return;
1159
1160 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1514 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1161 ev_stop ((W)w); 1515 ev_stop (EV_A_ (W)w);
1162} 1516}
1163 1517
1164/*****************************************************************************/ 1518/*****************************************************************************/
1165 1519
1166struct ev_once 1520struct ev_once
1170 void (*cb)(int revents, void *arg); 1524 void (*cb)(int revents, void *arg);
1171 void *arg; 1525 void *arg;
1172}; 1526};
1173 1527
1174static void 1528static void
1175once_cb (struct ev_once *once, int revents) 1529once_cb (EV_P_ struct ev_once *once, int revents)
1176{ 1530{
1177 void (*cb)(int revents, void *arg) = once->cb; 1531 void (*cb)(int revents, void *arg) = once->cb;
1178 void *arg = once->arg; 1532 void *arg = once->arg;
1179 1533
1180 ev_io_stop (&once->io); 1534 ev_io_stop (EV_A_ &once->io);
1181 ev_timer_stop (&once->to); 1535 ev_timer_stop (EV_A_ &once->to);
1182 free (once); 1536 ev_free (once);
1183 1537
1184 cb (revents, arg); 1538 cb (revents, arg);
1185} 1539}
1186 1540
1187static void 1541static void
1188once_cb_io (struct ev_io *w, int revents) 1542once_cb_io (EV_P_ struct ev_io *w, int revents)
1189{ 1543{
1190 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1544 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1191} 1545}
1192 1546
1193static void 1547static void
1194once_cb_to (struct ev_timer *w, int revents) 1548once_cb_to (EV_P_ struct ev_timer *w, int revents)
1195{ 1549{
1196 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1550 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1197} 1551}
1198 1552
1199void 1553void
1200ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1554ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1201{ 1555{
1202 struct ev_once *once = malloc (sizeof (struct ev_once)); 1556 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1203 1557
1204 if (!once) 1558 if (!once)
1205 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1559 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1206 else 1560 else
1207 { 1561 {
1210 1564
1211 ev_watcher_init (&once->io, once_cb_io); 1565 ev_watcher_init (&once->io, once_cb_io);
1212 if (fd >= 0) 1566 if (fd >= 0)
1213 { 1567 {
1214 ev_io_set (&once->io, fd, events); 1568 ev_io_set (&once->io, fd, events);
1215 ev_io_start (&once->io); 1569 ev_io_start (EV_A_ &once->io);
1216 } 1570 }
1217 1571
1218 ev_watcher_init (&once->to, once_cb_to); 1572 ev_watcher_init (&once->to, once_cb_to);
1219 if (timeout >= 0.) 1573 if (timeout >= 0.)
1220 { 1574 {
1221 ev_timer_set (&once->to, timeout, 0.); 1575 ev_timer_set (&once->to, timeout, 0.);
1222 ev_timer_start (&once->to); 1576 ev_timer_start (EV_A_ &once->to);
1223 } 1577 }
1224 } 1578 }
1225} 1579}
1226 1580
1227/*****************************************************************************/
1228
1229#if 0
1230
1231struct ev_io wio;
1232
1233static void
1234sin_cb (struct ev_io *w, int revents)
1235{
1236 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1237}
1238
1239static void
1240ocb (struct ev_timer *w, int revents)
1241{
1242 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1243 ev_timer_stop (w);
1244 ev_timer_start (w);
1245}
1246
1247static void
1248scb (struct ev_signal *w, int revents)
1249{
1250 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1251 ev_io_stop (&wio);
1252 ev_io_start (&wio);
1253}
1254
1255static void
1256gcb (struct ev_signal *w, int revents)
1257{
1258 fprintf (stderr, "generic %x\n", revents);
1259
1260}
1261
1262int main (void)
1263{
1264 ev_init (0);
1265
1266 ev_io_init (&wio, sin_cb, 0, EV_READ);
1267 ev_io_start (&wio);
1268
1269 struct ev_timer t[10000];
1270
1271#if 0
1272 int i;
1273 for (i = 0; i < 10000; ++i)
1274 {
1275 struct ev_timer *w = t + i;
1276 ev_watcher_init (w, ocb, i);
1277 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1278 ev_timer_start (w);
1279 if (drand48 () < 0.5)
1280 ev_timer_stop (w);
1281 }
1282#endif
1283
1284 struct ev_timer t1;
1285 ev_timer_init (&t1, ocb, 5, 10);
1286 ev_timer_start (&t1);
1287
1288 struct ev_signal sig;
1289 ev_signal_init (&sig, scb, SIGQUIT);
1290 ev_signal_start (&sig);
1291
1292 struct ev_check cw;
1293 ev_check_init (&cw, gcb);
1294 ev_check_start (&cw);
1295
1296 struct ev_idle iw;
1297 ev_idle_init (&iw, gcb);
1298 ev_idle_start (&iw);
1299
1300 ev_loop (0);
1301
1302 return 0;
1303}
1304
1305#endif
1306
1307
1308
1309

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