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Comparing libev/ev.c (file contents):
Revision 1.47 by root, Sat Nov 3 11:44:44 2007 UTC vs.
Revision 1.75 by root, Tue Nov 6 19:29:20 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
202{
203 W w;
204 int events;
205} ANPENDING;
206
207static ANPENDING *pendings [NUMPRI];
208static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210static void 321static void
211event (W w, int events) 322event (EV_P_ W w, int events)
212{ 323{
213 if (w->pending) 324 if (w->pending)
214 { 325 {
215 pendings [ABSPRI (w)][w->pending - 1].events |= events; 326 pendings [ABSPRI (w)][w->pending - 1].events |= events;
216 return; 327 return;
217 } 328 }
218 329
219 w->pending = ++pendingcnt [ABSPRI (w)]; 330 w->pending = ++pendingcnt [ABSPRI (w)];
220 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 331 array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
221 pendings [ABSPRI (w)][w->pending - 1].w = w; 332 pendings [ABSPRI (w)][w->pending - 1].w = w;
222 pendings [ABSPRI (w)][w->pending - 1].events = events; 333 pendings [ABSPRI (w)][w->pending - 1].events = events;
223} 334}
224 335
225static void 336static void
226queue_events (W *events, int eventcnt, int type) 337queue_events (EV_P_ W *events, int eventcnt, int type)
227{ 338{
228 int i; 339 int i;
229 340
230 for (i = 0; i < eventcnt; ++i) 341 for (i = 0; i < eventcnt; ++i)
231 event (events [i], type); 342 event (EV_A_ events [i], type);
232} 343}
233 344
234static void 345static void
235fd_event (int fd, int events) 346fd_event (EV_P_ int fd, int events)
236{ 347{
237 ANFD *anfd = anfds + fd; 348 ANFD *anfd = anfds + fd;
238 struct ev_io *w; 349 struct ev_io *w;
239 350
240 for (w = anfd->head; w; w = w->next) 351 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241 { 352 {
242 int ev = w->events & events; 353 int ev = w->events & events;
243 354
244 if (ev) 355 if (ev)
245 event ((W)w, ev); 356 event (EV_A_ (W)w, ev);
246 } 357 }
247} 358}
248 359
249/*****************************************************************************/ 360/*****************************************************************************/
250 361
251static int *fdchanges;
252static int fdchangemax, fdchangecnt;
253
254static void 362static void
255fd_reify (void) 363fd_reify (EV_P)
256{ 364{
257 int i; 365 int i;
258 366
259 for (i = 0; i < fdchangecnt; ++i) 367 for (i = 0; i < fdchangecnt; ++i)
260 { 368 {
262 ANFD *anfd = anfds + fd; 370 ANFD *anfd = anfds + fd;
263 struct ev_io *w; 371 struct ev_io *w;
264 372
265 int events = 0; 373 int events = 0;
266 374
267 for (w = anfd->head; w; w = w->next) 375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268 events |= w->events; 376 events |= w->events;
269 377
270 anfd->reify = 0; 378 anfd->reify = 0;
271 379
272 if (anfd->events != events)
273 {
274 method_modify (fd, anfd->events, events); 380 method_modify (EV_A_ fd, anfd->events, events);
275 anfd->events = events; 381 anfd->events = events;
276 }
277 } 382 }
278 383
279 fdchangecnt = 0; 384 fdchangecnt = 0;
280} 385}
281 386
282static void 387static void
283fd_change (int fd) 388fd_change (EV_P_ int fd)
284{ 389{
285 if (anfds [fd].reify || fdchangecnt < 0) 390 if (anfds [fd].reify)
286 return; 391 return;
287 392
288 anfds [fd].reify = 1; 393 anfds [fd].reify = 1;
289 394
290 ++fdchangecnt; 395 ++fdchangecnt;
291 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 396 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
292 fdchanges [fdchangecnt - 1] = fd; 397 fdchanges [fdchangecnt - 1] = fd;
293} 398}
294 399
295static void 400static void
296fd_kill (int fd) 401fd_kill (EV_P_ int fd)
297{ 402{
298 struct ev_io *w; 403 struct ev_io *w;
299 404
300 printf ("killing fd %d\n", fd);//D
301 while ((w = anfds [fd].head)) 405 while ((w = (struct ev_io *)anfds [fd].head))
302 { 406 {
303 ev_io_stop (w); 407 ev_io_stop (EV_A_ w);
304 event ((W)w, EV_ERROR | EV_READ | EV_WRITE); 408 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305 } 409 }
410}
411
412static int
413fd_valid (int fd)
414{
415#ifdef WIN32
416 return !!win32_get_osfhandle (fd);
417#else
418 return fcntl (fd, F_GETFD) != -1;
419#endif
306} 420}
307 421
308/* called on EBADF to verify fds */ 422/* called on EBADF to verify fds */
309static void 423static void
310fd_ebadf (void) 424fd_ebadf (EV_P)
311{ 425{
312 int fd; 426 int fd;
313 427
314 for (fd = 0; fd < anfdmax; ++fd) 428 for (fd = 0; fd < anfdmax; ++fd)
315 if (anfds [fd].events) 429 if (anfds [fd].events)
316 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 430 if (!fd_valid (fd) == -1 && errno == EBADF)
317 fd_kill (fd); 431 fd_kill (EV_A_ fd);
318} 432}
319 433
320/* called on ENOMEM in select/poll to kill some fds and retry */ 434/* called on ENOMEM in select/poll to kill some fds and retry */
321static void 435static void
322fd_enomem (void) 436fd_enomem (EV_P)
323{ 437{
324 int fd = anfdmax; 438 int fd;
325 439
326 while (fd--) 440 for (fd = anfdmax; fd--; )
327 if (anfds [fd].events) 441 if (anfds [fd].events)
328 { 442 {
329 close (fd);
330 fd_kill (fd); 443 fd_kill (EV_A_ fd);
331 return; 444 return;
332 } 445 }
333} 446}
334 447
448/* usually called after fork if method needs to re-arm all fds from scratch */
449static void
450fd_rearm_all (EV_P)
451{
452 int fd;
453
454 /* this should be highly optimised to not do anything but set a flag */
455 for (fd = 0; fd < anfdmax; ++fd)
456 if (anfds [fd].events)
457 {
458 anfds [fd].events = 0;
459 fd_change (EV_A_ fd);
460 }
461}
462
335/*****************************************************************************/ 463/*****************************************************************************/
336 464
337static struct ev_timer **timers;
338static int timermax, timercnt;
339
340static struct ev_periodic **periodics;
341static int periodicmax, periodiccnt;
342
343static void 465static void
344upheap (WT *timers, int k) 466upheap (WT *heap, int k)
345{ 467{
346 WT w = timers [k]; 468 WT w = heap [k];
347 469
348 while (k && timers [k >> 1]->at > w->at) 470 while (k && heap [k >> 1]->at > w->at)
349 { 471 {
350 timers [k] = timers [k >> 1]; 472 heap [k] = heap [k >> 1];
351 timers [k]->active = k + 1; 473 ((W)heap [k])->active = k + 1;
352 k >>= 1; 474 k >>= 1;
353 } 475 }
354 476
355 timers [k] = w; 477 heap [k] = w;
356 timers [k]->active = k + 1; 478 ((W)heap [k])->active = k + 1;
357 479
358} 480}
359 481
360static void 482static void
361downheap (WT *timers, int N, int k) 483downheap (WT *heap, int N, int k)
362{ 484{
363 WT w = timers [k]; 485 WT w = heap [k];
364 486
365 while (k < (N >> 1)) 487 while (k < (N >> 1))
366 { 488 {
367 int j = k << 1; 489 int j = k << 1;
368 490
369 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 491 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370 ++j; 492 ++j;
371 493
372 if (w->at <= timers [j]->at) 494 if (w->at <= heap [j]->at)
373 break; 495 break;
374 496
375 timers [k] = timers [j]; 497 heap [k] = heap [j];
376 timers [k]->active = k + 1; 498 ((W)heap [k])->active = k + 1;
377 k = j; 499 k = j;
378 } 500 }
379 501
380 timers [k] = w; 502 heap [k] = w;
381 timers [k]->active = k + 1; 503 ((W)heap [k])->active = k + 1;
382} 504}
383 505
384/*****************************************************************************/ 506/*****************************************************************************/
385 507
386typedef struct 508typedef struct
387{ 509{
388 struct ev_signal *head; 510 WL head;
389 sig_atomic_t volatile gotsig; 511 sig_atomic_t volatile gotsig;
390} ANSIG; 512} ANSIG;
391 513
392static ANSIG *signals; 514static ANSIG *signals;
393static int signalmax; 515static int signalmax;
409} 531}
410 532
411static void 533static void
412sighandler (int signum) 534sighandler (int signum)
413{ 535{
536#if WIN32
537 signal (signum, sighandler);
538#endif
539
414 signals [signum - 1].gotsig = 1; 540 signals [signum - 1].gotsig = 1;
415 541
416 if (!gotsig) 542 if (!gotsig)
417 { 543 {
544 int old_errno = errno;
418 gotsig = 1; 545 gotsig = 1;
546#ifdef WIN32
547 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548#else
419 write (sigpipe [1], &signum, 1); 549 write (sigpipe [1], &signum, 1);
550#endif
551 errno = old_errno;
420 } 552 }
421} 553}
422 554
423static void 555static void
424sigcb (struct ev_io *iow, int revents) 556sigcb (EV_P_ struct ev_io *iow, int revents)
425{ 557{
426 struct ev_signal *w; 558 WL w;
427 int signum; 559 int signum;
428 560
561#ifdef WIN32
562 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563#else
429 read (sigpipe [0], &revents, 1); 564 read (sigpipe [0], &revents, 1);
565#endif
430 gotsig = 0; 566 gotsig = 0;
431 567
432 for (signum = signalmax; signum--; ) 568 for (signum = signalmax; signum--; )
433 if (signals [signum].gotsig) 569 if (signals [signum].gotsig)
434 { 570 {
435 signals [signum].gotsig = 0; 571 signals [signum].gotsig = 0;
436 572
437 for (w = signals [signum].head; w; w = w->next) 573 for (w = signals [signum].head; w; w = w->next)
438 event ((W)w, EV_SIGNAL); 574 event (EV_A_ (W)w, EV_SIGNAL);
439 } 575 }
440} 576}
441 577
442static void 578static void
443siginit (void) 579siginit (EV_P)
444{ 580{
445#ifndef WIN32 581#ifndef WIN32
446 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 582 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); 583 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448 584
450 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 586 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 587 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452#endif 588#endif
453 589
454 ev_io_set (&sigev, sigpipe [0], EV_READ); 590 ev_io_set (&sigev, sigpipe [0], EV_READ);
455 ev_io_start (&sigev); 591 ev_io_start (EV_A_ &sigev);
592 ev_unref (EV_A); /* child watcher should not keep loop alive */
456} 593}
457 594
458/*****************************************************************************/ 595/*****************************************************************************/
459 596
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]; 597static struct ev_child *childs [PID_HASHSIZE];
598
599#ifndef WIN32
600
472static struct ev_signal childev; 601static struct ev_signal childev;
473
474#ifndef WIN32
475 602
476#ifndef WCONTINUED 603#ifndef WCONTINUED
477# define WCONTINUED 0 604# define WCONTINUED 0
478#endif 605#endif
479 606
480static void 607static void
481child_reap (struct ev_signal *sw, int chain, int pid, int status) 608child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482{ 609{
483 struct ev_child *w; 610 struct ev_child *w;
484 611
485 for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next) 612 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
486 if (w->pid == pid || !w->pid) 613 if (w->pid == pid || !w->pid)
487 { 614 {
488 w->priority = sw->priority; /* need to do it *now* */ 615 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
489 w->rpid = pid; 616 w->rpid = pid;
490 w->rstatus = status; 617 w->rstatus = status;
491 printf ("rpid %p %d %d\n", w, pid, w->pid);//D
492 event ((W)w, EV_CHILD); 618 event (EV_A_ (W)w, EV_CHILD);
493 } 619 }
494} 620}
495 621
496static void 622static void
497childcb (struct ev_signal *sw, int revents) 623childcb (EV_P_ struct ev_signal *sw, int revents)
498{ 624{
499 int pid, status; 625 int pid, status;
500 626
501 printf ("chld %x\n", revents);//D
502 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 627 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
503 { 628 {
504 /* make sure we are called again until all childs have been reaped */ 629 /* make sure we are called again until all childs have been reaped */
505 event ((W)sw, EV_SIGNAL); 630 event (EV_A_ (W)sw, EV_SIGNAL);
506 631
507 child_reap (sw, pid, pid, status); 632 child_reap (EV_A_ sw, pid, pid, status);
508 child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 633 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
509 } 634 }
510} 635}
511 636
512#endif 637#endif
513 638
536ev_version_minor (void) 661ev_version_minor (void)
537{ 662{
538 return EV_VERSION_MINOR; 663 return EV_VERSION_MINOR;
539} 664}
540 665
541/* return true if we are running with elevated privileges and ignore env variables */ 666/* return true if we are running with elevated privileges and should ignore env variables */
542static int 667static int
543enable_secure () 668enable_secure (void)
544{ 669{
670#ifdef WIN32
671 return 0;
672#else
545 return getuid () != geteuid () 673 return getuid () != geteuid ()
546 || getgid () != getegid (); 674 || getgid () != getegid ();
675#endif
547} 676}
548 677
549int ev_init (int methods) 678int
679ev_method (EV_P)
550{ 680{
681 return method;
682}
683
684static void
685loop_init (EV_P_ int methods)
686{
551 if (!ev_method) 687 if (!method)
552 { 688 {
553#if EV_USE_MONOTONIC 689#if EV_USE_MONOTONIC
554 { 690 {
555 struct timespec ts; 691 struct timespec ts;
556 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 692 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
557 have_monotonic = 1; 693 have_monotonic = 1;
558 } 694 }
559#endif 695#endif
560 696
561 ev_now = ev_time (); 697 rt_now = ev_time ();
562 now = get_clock (); 698 mn_now = get_clock ();
563 now_floor = now; 699 now_floor = mn_now;
564 diff = ev_now - now; 700 rtmn_diff = rt_now - mn_now;
565
566 if (pipe (sigpipe))
567 return 0;
568 701
569 if (methods == EVMETHOD_AUTO) 702 if (methods == EVMETHOD_AUTO)
570 if (!enable_secure () && getenv ("LIBEV_METHODS")) 703 if (!enable_secure () && getenv ("LIBEV_METHODS"))
571 methods = atoi (getenv ("LIBEV_METHODS")); 704 methods = atoi (getenv ("LIBEV_METHODS"));
572 else 705 else
573 methods = EVMETHOD_ANY; 706 methods = EVMETHOD_ANY;
574 707
575 ev_method = 0; 708 method = 0;
709#if EV_USE_WIN32
710 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
711#endif
576#if EV_USE_KQUEUE 712#if EV_USE_KQUEUE
577 if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); 713 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
578#endif 714#endif
579#if EV_USE_EPOLL 715#if EV_USE_EPOLL
580 if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); 716 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
581#endif 717#endif
582#if EV_USE_POLL 718#if EV_USE_POLL
583 if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); 719 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
584#endif 720#endif
585#if EV_USE_SELECT 721#if EV_USE_SELECT
586 if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); 722 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
587#endif 723#endif
588 724
725 ev_watcher_init (&sigev, sigcb);
726 ev_set_priority (&sigev, EV_MAXPRI);
727 }
728}
729
730void
731loop_destroy (EV_P)
732{
733 int i;
734
735#if EV_USE_WIN32
736 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
737#endif
738#if EV_USE_KQUEUE
739 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
740#endif
741#if EV_USE_EPOLL
742 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
743#endif
744#if EV_USE_POLL
745 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
746#endif
747#if EV_USE_SELECT
748 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
749#endif
750
751 for (i = NUMPRI; i--; )
752 array_free (pending, [i]);
753
754 /* have to use the microsoft-never-gets-it-right macro */
755 array_free_microshit (fdchange);
756 array_free_microshit (timer);
757 array_free_microshit (periodic);
758 array_free_microshit (idle);
759 array_free_microshit (prepare);
760 array_free_microshit (check);
761
762 method = 0;
763}
764
765static void
766loop_fork (EV_P)
767{
768#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
770#endif
771#if EV_USE_KQUEUE
772 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
773#endif
774
775 if (ev_is_active (&sigev))
776 {
777 /* default loop */
778
779 ev_ref (EV_A);
780 ev_io_stop (EV_A_ &sigev);
781 close (sigpipe [0]);
782 close (sigpipe [1]);
783
784 while (pipe (sigpipe))
785 syserr ("(libev) error creating pipe");
786
787 siginit (EV_A);
788 }
789
790 postfork = 0;
791}
792
793#if EV_MULTIPLICITY
794struct ev_loop *
795ev_loop_new (int methods)
796{
797 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798
799 memset (loop, 0, sizeof (struct ev_loop));
800
801 loop_init (EV_A_ methods);
802
803 if (ev_method (EV_A))
804 return loop;
805
806 return 0;
807}
808
809void
810ev_loop_destroy (EV_P)
811{
812 loop_destroy (EV_A);
813 ev_free (loop);
814}
815
816void
817ev_loop_fork (EV_P)
818{
819 postfork = 1;
820}
821
822#endif
823
824#if EV_MULTIPLICITY
825struct ev_loop default_loop_struct;
826static struct ev_loop *default_loop;
827
828struct ev_loop *
829#else
830static int default_loop;
831
832int
833#endif
834ev_default_loop (int methods)
835{
836 if (sigpipe [0] == sigpipe [1])
837 if (pipe (sigpipe))
838 return 0;
839
840 if (!default_loop)
841 {
842#if EV_MULTIPLICITY
843 struct ev_loop *loop = default_loop = &default_loop_struct;
844#else
845 default_loop = 1;
846#endif
847
848 loop_init (EV_A_ methods);
849
589 if (ev_method) 850 if (ev_method (EV_A))
590 { 851 {
591 ev_watcher_init (&sigev, sigcb);
592 ev_set_priority (&sigev, EV_MAXPRI);
593 siginit (); 852 siginit (EV_A);
594 853
595#ifndef WIN32 854#ifndef WIN32
596 ev_signal_init (&childev, childcb, SIGCHLD); 855 ev_signal_init (&childev, childcb, SIGCHLD);
597 ev_set_priority (&childev, EV_MAXPRI); 856 ev_set_priority (&childev, EV_MAXPRI);
598 ev_signal_start (&childev); 857 ev_signal_start (EV_A_ &childev);
858 ev_unref (EV_A); /* child watcher should not keep loop alive */
599#endif 859#endif
600 } 860 }
861 else
862 default_loop = 0;
601 } 863 }
602 864
603 return ev_method; 865 return default_loop;
866}
867
868void
869ev_default_destroy (void)
870{
871#if EV_MULTIPLICITY
872 struct ev_loop *loop = default_loop;
873#endif
874
875#ifndef WIN32
876 ev_ref (EV_A); /* child watcher */
877 ev_signal_stop (EV_A_ &childev);
878#endif
879
880 ev_ref (EV_A); /* signal watcher */
881 ev_io_stop (EV_A_ &sigev);
882
883 close (sigpipe [0]); sigpipe [0] = 0;
884 close (sigpipe [1]); sigpipe [1] = 0;
885
886 loop_destroy (EV_A);
887}
888
889void
890ev_default_fork (void)
891{
892#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop;
894#endif
895
896 if (method)
897 postfork = 1;
604} 898}
605 899
606/*****************************************************************************/ 900/*****************************************************************************/
607 901
608void
609ev_fork_prepare (void)
610{
611 /* nop */
612}
613
614void
615ev_fork_parent (void)
616{
617 /* nop */
618}
619
620void
621ev_fork_child (void)
622{
623#if EV_USE_EPOLL
624 if (ev_method == EVMETHOD_EPOLL)
625 epoll_postfork_child ();
626#endif
627
628 ev_io_stop (&sigev);
629 close (sigpipe [0]);
630 close (sigpipe [1]);
631 pipe (sigpipe);
632 siginit ();
633}
634
635/*****************************************************************************/
636
637static void 902static void
638call_pending (void) 903call_pending (EV_P)
639{ 904{
640 int pri; 905 int pri;
641 906
642 for (pri = NUMPRI; pri--; ) 907 for (pri = NUMPRI; pri--; )
643 while (pendingcnt [pri]) 908 while (pendingcnt [pri])
645 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 910 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
646 911
647 if (p->w) 912 if (p->w)
648 { 913 {
649 p->w->pending = 0; 914 p->w->pending = 0;
650 p->w->cb (p->w, p->events); 915 p->w->cb (EV_A_ p->w, p->events);
651 } 916 }
652 } 917 }
653} 918}
654 919
655static void 920static void
656timers_reify (void) 921timers_reify (EV_P)
657{ 922{
658 while (timercnt && timers [0]->at <= now) 923 while (timercnt && ((WT)timers [0])->at <= mn_now)
659 { 924 {
660 struct ev_timer *w = timers [0]; 925 struct ev_timer *w = timers [0];
926
927 assert (("inactive timer on timer heap detected", ev_is_active (w)));
661 928
662 /* first reschedule or stop timer */ 929 /* first reschedule or stop timer */
663 if (w->repeat) 930 if (w->repeat)
664 { 931 {
665 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 932 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
666 w->at = now + w->repeat; 933 ((WT)w)->at = mn_now + w->repeat;
667 downheap ((WT *)timers, timercnt, 0); 934 downheap ((WT *)timers, timercnt, 0);
668 } 935 }
669 else 936 else
670 ev_timer_stop (w); /* nonrepeating: stop timer */ 937 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
671 938
672 event ((W)w, EV_TIMEOUT); 939 event (EV_A_ (W)w, EV_TIMEOUT);
673 } 940 }
674} 941}
675 942
676static void 943static void
677periodics_reify (void) 944periodics_reify (EV_P)
678{ 945{
679 while (periodiccnt && periodics [0]->at <= ev_now) 946 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
680 { 947 {
681 struct ev_periodic *w = periodics [0]; 948 struct ev_periodic *w = periodics [0];
949
950 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
682 951
683 /* first reschedule or stop timer */ 952 /* first reschedule or stop timer */
684 if (w->interval) 953 if (w->interval)
685 { 954 {
686 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 955 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
687 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 956 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
688 downheap ((WT *)periodics, periodiccnt, 0); 957 downheap ((WT *)periodics, periodiccnt, 0);
689 } 958 }
690 else 959 else
691 ev_periodic_stop (w); /* nonrepeating: stop timer */ 960 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
692 961
693 event ((W)w, EV_PERIODIC); 962 event (EV_A_ (W)w, EV_PERIODIC);
694 } 963 }
695} 964}
696 965
697static void 966static void
698periodics_reschedule (ev_tstamp diff) 967periodics_reschedule (EV_P)
699{ 968{
700 int i; 969 int i;
701 970
702 /* adjust periodics after time jump */ 971 /* adjust periodics after time jump */
703 for (i = 0; i < periodiccnt; ++i) 972 for (i = 0; i < periodiccnt; ++i)
704 { 973 {
705 struct ev_periodic *w = periodics [i]; 974 struct ev_periodic *w = periodics [i];
706 975
707 if (w->interval) 976 if (w->interval)
708 { 977 {
709 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 978 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
710 979
711 if (fabs (diff) >= 1e-4) 980 if (fabs (diff) >= 1e-4)
712 { 981 {
713 ev_periodic_stop (w); 982 ev_periodic_stop (EV_A_ w);
714 ev_periodic_start (w); 983 ev_periodic_start (EV_A_ w);
715 984
716 i = 0; /* restart loop, inefficient, but time jumps should be rare */ 985 i = 0; /* restart loop, inefficient, but time jumps should be rare */
717 } 986 }
718 } 987 }
719 } 988 }
720} 989}
721 990
722static int 991inline int
723time_update_monotonic (void) 992time_update_monotonic (EV_P)
724{ 993{
725 now = get_clock (); 994 mn_now = get_clock ();
726 995
727 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) 996 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
728 { 997 {
729 ev_now = now + diff; 998 rt_now = rtmn_diff + mn_now;
730 return 0; 999 return 0;
731 } 1000 }
732 else 1001 else
733 { 1002 {
734 now_floor = now; 1003 now_floor = mn_now;
735 ev_now = ev_time (); 1004 rt_now = ev_time ();
736 return 1; 1005 return 1;
737 } 1006 }
738} 1007}
739 1008
740static void 1009static void
741time_update (void) 1010time_update (EV_P)
742{ 1011{
743 int i; 1012 int i;
744 1013
745#if EV_USE_MONOTONIC 1014#if EV_USE_MONOTONIC
746 if (expect_true (have_monotonic)) 1015 if (expect_true (have_monotonic))
747 { 1016 {
748 if (time_update_monotonic ()) 1017 if (time_update_monotonic (EV_A))
749 { 1018 {
750 ev_tstamp odiff = diff; 1019 ev_tstamp odiff = rtmn_diff;
751 1020
752 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1021 for (i = 4; --i; ) /* loop a few times, before making important decisions */
753 { 1022 {
754 diff = ev_now - now; 1023 rtmn_diff = rt_now - mn_now;
755 1024
756 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1025 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
757 return; /* all is well */ 1026 return; /* all is well */
758 1027
759 ev_now = ev_time (); 1028 rt_now = ev_time ();
760 now = get_clock (); 1029 mn_now = get_clock ();
761 now_floor = now; 1030 now_floor = mn_now;
762 } 1031 }
763 1032
764 periodics_reschedule (diff - odiff); 1033 periodics_reschedule (EV_A);
765 /* no timer adjustment, as the monotonic clock doesn't jump */ 1034 /* no timer adjustment, as the monotonic clock doesn't jump */
1035 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
766 } 1036 }
767 } 1037 }
768 else 1038 else
769#endif 1039#endif
770 { 1040 {
771 ev_now = ev_time (); 1041 rt_now = ev_time ();
772 1042
773 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1043 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
774 { 1044 {
775 periodics_reschedule (ev_now - now); 1045 periodics_reschedule (EV_A);
776 1046
777 /* adjust timers. this is easy, as the offset is the same for all */ 1047 /* adjust timers. this is easy, as the offset is the same for all */
778 for (i = 0; i < timercnt; ++i) 1048 for (i = 0; i < timercnt; ++i)
779 timers [i]->at += diff; 1049 ((WT)timers [i])->at += rt_now - mn_now;
780 } 1050 }
781 1051
782 now = ev_now; 1052 mn_now = rt_now;
783 } 1053 }
784} 1054}
785 1055
786int ev_loop_done; 1056void
1057ev_ref (EV_P)
1058{
1059 ++activecnt;
1060}
787 1061
1062void
1063ev_unref (EV_P)
1064{
1065 --activecnt;
1066}
1067
1068static int loop_done;
1069
1070void
788void ev_loop (int flags) 1071ev_loop (EV_P_ int flags)
789{ 1072{
790 double block; 1073 double block;
791 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1074 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
792 1075
793 do 1076 do
794 { 1077 {
795 /* queue check watchers (and execute them) */ 1078 /* queue check watchers (and execute them) */
796 if (expect_false (preparecnt)) 1079 if (expect_false (preparecnt))
797 { 1080 {
798 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1081 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
799 call_pending (); 1082 call_pending (EV_A);
800 } 1083 }
801 1084
1085 /* we might have forked, so reify kernel state if necessary */
1086 if (expect_false (postfork))
1087 loop_fork (EV_A);
1088
802 /* update fd-related kernel structures */ 1089 /* update fd-related kernel structures */
803 fd_reify (); 1090 fd_reify (EV_A);
804 1091
805 /* calculate blocking time */ 1092 /* calculate blocking time */
806 1093
807 /* we only need this for !monotonic clockor timers, but as we basically 1094 /* we only need this for !monotonic clockor timers, but as we basically
808 always have timers, we just calculate it always */ 1095 always have timers, we just calculate it always */
809#if EV_USE_MONOTONIC 1096#if EV_USE_MONOTONIC
810 if (expect_true (have_monotonic)) 1097 if (expect_true (have_monotonic))
811 time_update_monotonic (); 1098 time_update_monotonic (EV_A);
812 else 1099 else
813#endif 1100#endif
814 { 1101 {
815 ev_now = ev_time (); 1102 rt_now = ev_time ();
816 now = ev_now; 1103 mn_now = rt_now;
817 } 1104 }
818 1105
819 if (flags & EVLOOP_NONBLOCK || idlecnt) 1106 if (flags & EVLOOP_NONBLOCK || idlecnt)
820 block = 0.; 1107 block = 0.;
821 else 1108 else
822 { 1109 {
823 block = MAX_BLOCKTIME; 1110 block = MAX_BLOCKTIME;
824 1111
825 if (timercnt) 1112 if (timercnt)
826 { 1113 {
827 ev_tstamp to = timers [0]->at - now + method_fudge; 1114 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
828 if (block > to) block = to; 1115 if (block > to) block = to;
829 } 1116 }
830 1117
831 if (periodiccnt) 1118 if (periodiccnt)
832 { 1119 {
833 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1120 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
834 if (block > to) block = to; 1121 if (block > to) block = to;
835 } 1122 }
836 1123
837 if (block < 0.) block = 0.; 1124 if (block < 0.) block = 0.;
838 } 1125 }
839 1126
840 method_poll (block); 1127 method_poll (EV_A_ block);
841 1128
842 /* update ev_now, do magic */ 1129 /* update rt_now, do magic */
843 time_update (); 1130 time_update (EV_A);
844 1131
845 /* queue pending timers and reschedule them */ 1132 /* queue pending timers and reschedule them */
846 timers_reify (); /* relative timers called last */ 1133 timers_reify (EV_A); /* relative timers called last */
847 periodics_reify (); /* absolute timers called first */ 1134 periodics_reify (EV_A); /* absolute timers called first */
848 1135
849 /* queue idle watchers unless io or timers are pending */ 1136 /* queue idle watchers unless io or timers are pending */
850 if (!pendingcnt) 1137 if (!pendingcnt)
851 queue_events ((W *)idles, idlecnt, EV_IDLE); 1138 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
852 1139
853 /* queue check watchers, to be executed first */ 1140 /* queue check watchers, to be executed first */
854 if (checkcnt) 1141 if (checkcnt)
855 queue_events ((W *)checks, checkcnt, EV_CHECK); 1142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
856 1143
857 call_pending (); 1144 call_pending (EV_A);
858 } 1145 }
859 while (!ev_loop_done); 1146 while (activecnt && !loop_done);
860 1147
861 if (ev_loop_done != 2) 1148 if (loop_done != 2)
862 ev_loop_done = 0; 1149 loop_done = 0;
1150}
1151
1152void
1153ev_unloop (EV_P_ int how)
1154{
1155 loop_done = how;
863} 1156}
864 1157
865/*****************************************************************************/ 1158/*****************************************************************************/
866 1159
867static void 1160inline void
868wlist_add (WL *head, WL elem) 1161wlist_add (WL *head, WL elem)
869{ 1162{
870 elem->next = *head; 1163 elem->next = *head;
871 *head = elem; 1164 *head = elem;
872} 1165}
873 1166
874static void 1167inline void
875wlist_del (WL *head, WL elem) 1168wlist_del (WL *head, WL elem)
876{ 1169{
877 while (*head) 1170 while (*head)
878 { 1171 {
879 if (*head == elem) 1172 if (*head == elem)
884 1177
885 head = &(*head)->next; 1178 head = &(*head)->next;
886 } 1179 }
887} 1180}
888 1181
889static void 1182inline void
890ev_clear_pending (W w) 1183ev_clear_pending (EV_P_ W w)
891{ 1184{
892 if (w->pending) 1185 if (w->pending)
893 { 1186 {
894 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1187 pendings [ABSPRI (w)][w->pending - 1].w = 0;
895 w->pending = 0; 1188 w->pending = 0;
896 } 1189 }
897} 1190}
898 1191
899static void 1192inline void
900ev_start (W w, int active) 1193ev_start (EV_P_ W w, int active)
901{ 1194{
902 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1195 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
903 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1196 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
904 1197
905 w->active = active; 1198 w->active = active;
1199 ev_ref (EV_A);
906} 1200}
907 1201
908static void 1202inline void
909ev_stop (W w) 1203ev_stop (EV_P_ W w)
910{ 1204{
1205 ev_unref (EV_A);
911 w->active = 0; 1206 w->active = 0;
912} 1207}
913 1208
914/*****************************************************************************/ 1209/*****************************************************************************/
915 1210
916void 1211void
917ev_io_start (struct ev_io *w) 1212ev_io_start (EV_P_ struct ev_io *w)
918{ 1213{
919 int fd = w->fd; 1214 int fd = w->fd;
920 1215
921 if (ev_is_active (w)) 1216 if (ev_is_active (w))
922 return; 1217 return;
923 1218
924 assert (("ev_io_start called with negative fd", fd >= 0)); 1219 assert (("ev_io_start called with negative fd", fd >= 0));
925 1220
926 ev_start ((W)w, 1); 1221 ev_start (EV_A_ (W)w, 1);
927 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1222 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
928 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1223 wlist_add ((WL *)&anfds[fd].head, (WL)w);
929 1224
930 fd_change (fd); 1225 fd_change (EV_A_ fd);
931} 1226}
932 1227
933void 1228void
934ev_io_stop (struct ev_io *w) 1229ev_io_stop (EV_P_ struct ev_io *w)
935{ 1230{
936 ev_clear_pending ((W)w); 1231 ev_clear_pending (EV_A_ (W)w);
937 if (!ev_is_active (w)) 1232 if (!ev_is_active (w))
938 return; 1233 return;
939 1234
940 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1235 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
941 ev_stop ((W)w); 1236 ev_stop (EV_A_ (W)w);
942 1237
943 fd_change (w->fd); 1238 fd_change (EV_A_ w->fd);
944} 1239}
945 1240
946void 1241void
947ev_timer_start (struct ev_timer *w) 1242ev_timer_start (EV_P_ struct ev_timer *w)
948{ 1243{
949 if (ev_is_active (w)) 1244 if (ev_is_active (w))
950 return; 1245 return;
951 1246
952 w->at += now; 1247 ((WT)w)->at += mn_now;
953 1248
954 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1249 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
955 1250
956 ev_start ((W)w, ++timercnt); 1251 ev_start (EV_A_ (W)w, ++timercnt);
957 array_needsize (timers, timermax, timercnt, ); 1252 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
958 timers [timercnt - 1] = w; 1253 timers [timercnt - 1] = w;
959 upheap ((WT *)timers, timercnt - 1); 1254 upheap ((WT *)timers, timercnt - 1);
960}
961 1255
1256 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1257}
1258
962void 1259void
963ev_timer_stop (struct ev_timer *w) 1260ev_timer_stop (EV_P_ struct ev_timer *w)
964{ 1261{
965 ev_clear_pending ((W)w); 1262 ev_clear_pending (EV_A_ (W)w);
966 if (!ev_is_active (w)) 1263 if (!ev_is_active (w))
967 return; 1264 return;
968 1265
1266 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1267
969 if (w->active < timercnt--) 1268 if (((W)w)->active < timercnt--)
970 { 1269 {
971 timers [w->active - 1] = timers [timercnt]; 1270 timers [((W)w)->active - 1] = timers [timercnt];
972 downheap ((WT *)timers, timercnt, w->active - 1); 1271 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
973 } 1272 }
974 1273
975 w->at = w->repeat; 1274 ((WT)w)->at = w->repeat;
976 1275
977 ev_stop ((W)w); 1276 ev_stop (EV_A_ (W)w);
978} 1277}
979 1278
980void 1279void
981ev_timer_again (struct ev_timer *w) 1280ev_timer_again (EV_P_ struct ev_timer *w)
982{ 1281{
983 if (ev_is_active (w)) 1282 if (ev_is_active (w))
984 { 1283 {
985 if (w->repeat) 1284 if (w->repeat)
986 { 1285 {
987 w->at = now + w->repeat; 1286 ((WT)w)->at = mn_now + w->repeat;
988 downheap ((WT *)timers, timercnt, w->active - 1); 1287 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
989 } 1288 }
990 else 1289 else
991 ev_timer_stop (w); 1290 ev_timer_stop (EV_A_ w);
992 } 1291 }
993 else if (w->repeat) 1292 else if (w->repeat)
994 ev_timer_start (w); 1293 ev_timer_start (EV_A_ w);
995} 1294}
996 1295
997void 1296void
998ev_periodic_start (struct ev_periodic *w) 1297ev_periodic_start (EV_P_ struct ev_periodic *w)
999{ 1298{
1000 if (ev_is_active (w)) 1299 if (ev_is_active (w))
1001 return; 1300 return;
1002 1301
1003 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1302 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1004 1303
1005 /* this formula differs from the one in periodic_reify because we do not always round up */ 1304 /* this formula differs from the one in periodic_reify because we do not always round up */
1006 if (w->interval) 1305 if (w->interval)
1007 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1306 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1008 1307
1009 ev_start ((W)w, ++periodiccnt); 1308 ev_start (EV_A_ (W)w, ++periodiccnt);
1010 array_needsize (periodics, periodicmax, periodiccnt, ); 1309 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1011 periodics [periodiccnt - 1] = w; 1310 periodics [periodiccnt - 1] = w;
1012 upheap ((WT *)periodics, periodiccnt - 1); 1311 upheap ((WT *)periodics, periodiccnt - 1);
1013}
1014 1312
1313 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1314}
1315
1015void 1316void
1016ev_periodic_stop (struct ev_periodic *w) 1317ev_periodic_stop (EV_P_ struct ev_periodic *w)
1017{ 1318{
1018 ev_clear_pending ((W)w); 1319 ev_clear_pending (EV_A_ (W)w);
1019 if (!ev_is_active (w)) 1320 if (!ev_is_active (w))
1020 return; 1321 return;
1021 1322
1323 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1324
1022 if (w->active < periodiccnt--) 1325 if (((W)w)->active < periodiccnt--)
1023 { 1326 {
1024 periodics [w->active - 1] = periodics [periodiccnt]; 1327 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1025 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1328 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1026 } 1329 }
1027 1330
1028 ev_stop ((W)w); 1331 ev_stop (EV_A_ (W)w);
1332}
1333
1334void
1335ev_idle_start (EV_P_ struct ev_idle *w)
1336{
1337 if (ev_is_active (w))
1338 return;
1339
1340 ev_start (EV_A_ (W)w, ++idlecnt);
1341 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1342 idles [idlecnt - 1] = w;
1343}
1344
1345void
1346ev_idle_stop (EV_P_ struct ev_idle *w)
1347{
1348 ev_clear_pending (EV_A_ (W)w);
1349 if (ev_is_active (w))
1350 return;
1351
1352 idles [((W)w)->active - 1] = idles [--idlecnt];
1353 ev_stop (EV_A_ (W)w);
1354}
1355
1356void
1357ev_prepare_start (EV_P_ struct ev_prepare *w)
1358{
1359 if (ev_is_active (w))
1360 return;
1361
1362 ev_start (EV_A_ (W)w, ++preparecnt);
1363 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1364 prepares [preparecnt - 1] = w;
1365}
1366
1367void
1368ev_prepare_stop (EV_P_ struct ev_prepare *w)
1369{
1370 ev_clear_pending (EV_A_ (W)w);
1371 if (ev_is_active (w))
1372 return;
1373
1374 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1375 ev_stop (EV_A_ (W)w);
1376}
1377
1378void
1379ev_check_start (EV_P_ struct ev_check *w)
1380{
1381 if (ev_is_active (w))
1382 return;
1383
1384 ev_start (EV_A_ (W)w, ++checkcnt);
1385 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1386 checks [checkcnt - 1] = w;
1387}
1388
1389void
1390ev_check_stop (EV_P_ struct ev_check *w)
1391{
1392 ev_clear_pending (EV_A_ (W)w);
1393 if (ev_is_active (w))
1394 return;
1395
1396 checks [((W)w)->active - 1] = checks [--checkcnt];
1397 ev_stop (EV_A_ (W)w);
1029} 1398}
1030 1399
1031#ifndef SA_RESTART 1400#ifndef SA_RESTART
1032# define SA_RESTART 0 1401# define SA_RESTART 0
1033#endif 1402#endif
1034 1403
1035void 1404void
1036ev_signal_start (struct ev_signal *w) 1405ev_signal_start (EV_P_ struct ev_signal *w)
1037{ 1406{
1407#if EV_MULTIPLICITY
1408 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1409#endif
1038 if (ev_is_active (w)) 1410 if (ev_is_active (w))
1039 return; 1411 return;
1040 1412
1041 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1413 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1042 1414
1043 ev_start ((W)w, 1); 1415 ev_start (EV_A_ (W)w, 1);
1044 array_needsize (signals, signalmax, w->signum, signals_init); 1416 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1045 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1417 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1046 1418
1047 if (!w->next) 1419 if (!((WL)w)->next)
1048 { 1420 {
1421#if WIN32
1422 signal (w->signum, sighandler);
1423#else
1049 struct sigaction sa; 1424 struct sigaction sa;
1050 sa.sa_handler = sighandler; 1425 sa.sa_handler = sighandler;
1051 sigfillset (&sa.sa_mask); 1426 sigfillset (&sa.sa_mask);
1052 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1427 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1053 sigaction (w->signum, &sa, 0); 1428 sigaction (w->signum, &sa, 0);
1429#endif
1054 } 1430 }
1055} 1431}
1056 1432
1057void 1433void
1058ev_signal_stop (struct ev_signal *w) 1434ev_signal_stop (EV_P_ struct ev_signal *w)
1059{ 1435{
1060 ev_clear_pending ((W)w); 1436 ev_clear_pending (EV_A_ (W)w);
1061 if (!ev_is_active (w)) 1437 if (!ev_is_active (w))
1062 return; 1438 return;
1063 1439
1064 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1440 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1065 ev_stop ((W)w); 1441 ev_stop (EV_A_ (W)w);
1066 1442
1067 if (!signals [w->signum - 1].head) 1443 if (!signals [w->signum - 1].head)
1068 signal (w->signum, SIG_DFL); 1444 signal (w->signum, SIG_DFL);
1069} 1445}
1070 1446
1071void 1447void
1072ev_idle_start (struct ev_idle *w) 1448ev_child_start (EV_P_ struct ev_child *w)
1073{ 1449{
1450#if EV_MULTIPLICITY
1451 assert (("child watchers are only supported in the default loop", loop == default_loop));
1452#endif
1074 if (ev_is_active (w)) 1453 if (ev_is_active (w))
1075 return; 1454 return;
1076 1455
1077 ev_start ((W)w, ++idlecnt); 1456 ev_start (EV_A_ (W)w, 1);
1078 array_needsize (idles, idlemax, idlecnt, ); 1457 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1079 idles [idlecnt - 1] = w;
1080} 1458}
1081 1459
1082void 1460void
1083ev_idle_stop (struct ev_idle *w) 1461ev_child_stop (EV_P_ struct ev_child *w)
1084{ 1462{
1085 ev_clear_pending ((W)w); 1463 ev_clear_pending (EV_A_ (W)w);
1086 if (ev_is_active (w)) 1464 if (ev_is_active (w))
1087 return; 1465 return;
1088 1466
1089 idles [w->active - 1] = idles [--idlecnt];
1090 ev_stop ((W)w);
1091}
1092
1093void
1094ev_prepare_start (struct ev_prepare *w)
1095{
1096 if (ev_is_active (w))
1097 return;
1098
1099 ev_start ((W)w, ++preparecnt);
1100 array_needsize (prepares, preparemax, preparecnt, );
1101 prepares [preparecnt - 1] = w;
1102}
1103
1104void
1105ev_prepare_stop (struct ev_prepare *w)
1106{
1107 ev_clear_pending ((W)w);
1108 if (ev_is_active (w))
1109 return;
1110
1111 prepares [w->active - 1] = prepares [--preparecnt];
1112 ev_stop ((W)w);
1113}
1114
1115void
1116ev_check_start (struct ev_check *w)
1117{
1118 if (ev_is_active (w))
1119 return;
1120
1121 ev_start ((W)w, ++checkcnt);
1122 array_needsize (checks, checkmax, checkcnt, );
1123 checks [checkcnt - 1] = w;
1124}
1125
1126void
1127ev_check_stop (struct ev_check *w)
1128{
1129 ev_clear_pending ((W)w);
1130 if (ev_is_active (w))
1131 return;
1132
1133 checks [w->active - 1] = checks [--checkcnt];
1134 ev_stop ((W)w);
1135}
1136
1137void
1138ev_child_start (struct ev_child *w)
1139{
1140 if (ev_is_active (w))
1141 return;
1142
1143 ev_start ((W)w, 1);
1144 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1145}
1146
1147void
1148ev_child_stop (struct ev_child *w)
1149{
1150 ev_clear_pending ((W)w);
1151 if (ev_is_active (w))
1152 return;
1153
1154 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1467 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1155 ev_stop ((W)w); 1468 ev_stop (EV_A_ (W)w);
1156} 1469}
1157 1470
1158/*****************************************************************************/ 1471/*****************************************************************************/
1159 1472
1160struct ev_once 1473struct ev_once
1164 void (*cb)(int revents, void *arg); 1477 void (*cb)(int revents, void *arg);
1165 void *arg; 1478 void *arg;
1166}; 1479};
1167 1480
1168static void 1481static void
1169once_cb (struct ev_once *once, int revents) 1482once_cb (EV_P_ struct ev_once *once, int revents)
1170{ 1483{
1171 void (*cb)(int revents, void *arg) = once->cb; 1484 void (*cb)(int revents, void *arg) = once->cb;
1172 void *arg = once->arg; 1485 void *arg = once->arg;
1173 1486
1174 ev_io_stop (&once->io); 1487 ev_io_stop (EV_A_ &once->io);
1175 ev_timer_stop (&once->to); 1488 ev_timer_stop (EV_A_ &once->to);
1176 free (once); 1489 ev_free (once);
1177 1490
1178 cb (revents, arg); 1491 cb (revents, arg);
1179} 1492}
1180 1493
1181static void 1494static void
1182once_cb_io (struct ev_io *w, int revents) 1495once_cb_io (EV_P_ struct ev_io *w, int revents)
1183{ 1496{
1184 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1497 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1185} 1498}
1186 1499
1187static void 1500static void
1188once_cb_to (struct ev_timer *w, int revents) 1501once_cb_to (EV_P_ struct ev_timer *w, int revents)
1189{ 1502{
1190 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1503 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1191} 1504}
1192 1505
1193void 1506void
1194ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1507ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1195{ 1508{
1196 struct ev_once *once = malloc (sizeof (struct ev_once)); 1509 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1197 1510
1198 if (!once) 1511 if (!once)
1199 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1512 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1200 else 1513 else
1201 { 1514 {
1204 1517
1205 ev_watcher_init (&once->io, once_cb_io); 1518 ev_watcher_init (&once->io, once_cb_io);
1206 if (fd >= 0) 1519 if (fd >= 0)
1207 { 1520 {
1208 ev_io_set (&once->io, fd, events); 1521 ev_io_set (&once->io, fd, events);
1209 ev_io_start (&once->io); 1522 ev_io_start (EV_A_ &once->io);
1210 } 1523 }
1211 1524
1212 ev_watcher_init (&once->to, once_cb_to); 1525 ev_watcher_init (&once->to, once_cb_to);
1213 if (timeout >= 0.) 1526 if (timeout >= 0.)
1214 { 1527 {
1215 ev_timer_set (&once->to, timeout, 0.); 1528 ev_timer_set (&once->to, timeout, 0.);
1216 ev_timer_start (&once->to); 1529 ev_timer_start (EV_A_ &once->to);
1217 } 1530 }
1218 } 1531 }
1219} 1532}
1220 1533
1221/*****************************************************************************/
1222
1223#if 0
1224
1225struct ev_io wio;
1226
1227static void
1228sin_cb (struct ev_io *w, int revents)
1229{
1230 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1231}
1232
1233static void
1234ocb (struct ev_timer *w, int revents)
1235{
1236 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1237 ev_timer_stop (w);
1238 ev_timer_start (w);
1239}
1240
1241static void
1242scb (struct ev_signal *w, int revents)
1243{
1244 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1245 ev_io_stop (&wio);
1246 ev_io_start (&wio);
1247}
1248
1249static void
1250gcb (struct ev_signal *w, int revents)
1251{
1252 fprintf (stderr, "generic %x\n", revents);
1253
1254}
1255
1256int main (void)
1257{
1258 ev_init (0);
1259
1260 ev_io_init (&wio, sin_cb, 0, EV_READ);
1261 ev_io_start (&wio);
1262
1263 struct ev_timer t[10000];
1264
1265#if 0
1266 int i;
1267 for (i = 0; i < 10000; ++i)
1268 {
1269 struct ev_timer *w = t + i;
1270 ev_watcher_init (w, ocb, i);
1271 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1272 ev_timer_start (w);
1273 if (drand48 () < 0.5)
1274 ev_timer_stop (w);
1275 }
1276#endif
1277
1278 struct ev_timer t1;
1279 ev_timer_init (&t1, ocb, 5, 10);
1280 ev_timer_start (&t1);
1281
1282 struct ev_signal sig;
1283 ev_signal_init (&sig, scb, SIGQUIT);
1284 ev_signal_start (&sig);
1285
1286 struct ev_check cw;
1287 ev_check_init (&cw, gcb);
1288 ev_check_start (&cw);
1289
1290 struct ev_idle iw;
1291 ev_idle_init (&iw, gcb);
1292 ev_idle_start (&iw);
1293
1294 ev_loop (0);
1295
1296 return 0;
1297}
1298
1299#endif
1300
1301
1302
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