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Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.73 by root, Tue Nov 6 16:27:10 2007 UTC

28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31#ifndef EV_STANDALONE 31#ifndef EV_STANDALONE
32# include "config.h" 32# include "config.h"
33
34# if HAVE_CLOCK_GETTIME
35# define EV_USE_MONOTONIC 1
36# define EV_USE_REALTIME 1
37# endif
38
39# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1
41# endif
42
43# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1
45# endif
46
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1
49# endif
50
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1
53# endif
54
33#endif 55#endif
34 56
35#include <math.h> 57#include <math.h>
36#include <stdlib.h> 58#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 59#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 60#include <stddef.h>
41 61
42#include <stdio.h> 62#include <stdio.h>
43 63
44#include <assert.h> 64#include <assert.h>
45#include <errno.h> 65#include <errno.h>
46#include <sys/types.h> 66#include <sys/types.h>
67#include <time.h>
68
69#include <signal.h>
70
47#ifndef WIN32 71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
48# include <sys/wait.h> 74# include <sys/wait.h>
49#endif 75#endif
50#include <sys/time.h>
51#include <time.h>
52
53/**/ 76/**/
54 77
55#ifndef EV_USE_MONOTONIC 78#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 79# define EV_USE_MONOTONIC 1
57#endif 80#endif
68# define EV_USE_EPOLL 0 91# define EV_USE_EPOLL 0
69#endif 92#endif
70 93
71#ifndef EV_USE_KQUEUE 94#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
73#endif 106#endif
74 107
75#ifndef EV_USE_REALTIME 108#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 109# define EV_USE_REALTIME 1
77#endif 110#endif
113 146
114typedef struct ev_watcher *W; 147typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 148typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 149typedef struct ev_watcher_time *WT;
117 150
118static ev_tstamp now_floor, now, diff; /* monotonic clock */ 151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119ev_tstamp ev_now;
120int ev_method;
121 152
122static int have_monotonic; /* runtime */ 153#include "ev_win32.c"
123
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(int fd, int oev, int nev);
126static void (*method_poll)(ev_tstamp timeout);
127 154
128/*****************************************************************************/ 155/*****************************************************************************/
129 156
130ev_tstamp 157static void (*syserr_cb)(const char *msg);
158
159void ev_set_syserr_cb (void (*cb)(const char *msg))
160{
161 syserr_cb = cb;
162}
163
164static void
165syserr (const char *msg)
166{
167 if (!msg)
168 msg = "(libev) system error";
169
170 if (syserr_cb)
171 syserr_cb (msg);
172 else
173 {
174 perror (msg);
175 abort ();
176 }
177}
178
179static void *(*alloc)(void *ptr, long size);
180
181void ev_set_allocator (void *(*cb)(void *ptr, long size))
182{
183 alloc = cb;
184}
185
186static void *
187ev_realloc (void *ptr, long size)
188{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190
191 if (!ptr && size)
192 {
193 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
194 abort ();
195 }
196
197 return ptr;
198}
199
200#define ev_malloc(size) ev_realloc (0, (size))
201#define ev_free(ptr) ev_realloc ((ptr), 0)
202
203/*****************************************************************************/
204
205typedef struct
206{
207 WL head;
208 unsigned char events;
209 unsigned char reify;
210} ANFD;
211
212typedef struct
213{
214 W w;
215 int events;
216} ANPENDING;
217
218#if EV_MULTIPLICITY
219
220struct ev_loop
221{
222# define VAR(name,decl) decl;
223# include "ev_vars.h"
224};
225# undef VAR
226# include "ev_wrap.h"
227
228#else
229
230# define VAR(name,decl) static decl;
231# include "ev_vars.h"
232# undef VAR
233
234#endif
235
236/*****************************************************************************/
237
238inline ev_tstamp
131ev_time (void) 239ev_time (void)
132{ 240{
133#if EV_USE_REALTIME 241#if EV_USE_REALTIME
134 struct timespec ts; 242 struct timespec ts;
135 clock_gettime (CLOCK_REALTIME, &ts); 243 clock_gettime (CLOCK_REALTIME, &ts);
139 gettimeofday (&tv, 0); 247 gettimeofday (&tv, 0);
140 return tv.tv_sec + tv.tv_usec * 1e-6; 248 return tv.tv_sec + tv.tv_usec * 1e-6;
141#endif 249#endif
142} 250}
143 251
144static ev_tstamp 252inline ev_tstamp
145get_clock (void) 253get_clock (void)
146{ 254{
147#if EV_USE_MONOTONIC 255#if EV_USE_MONOTONIC
148 if (expect_true (have_monotonic)) 256 if (expect_true (have_monotonic))
149 { 257 {
154#endif 262#endif
155 263
156 return ev_time (); 264 return ev_time ();
157} 265}
158 266
267ev_tstamp
268ev_now (EV_P)
269{
270 return rt_now;
271}
272
159#define array_roundsize(base,n) ((n) | 4 & ~3) 273#define array_roundsize(base,n) ((n) | 4 & ~3)
160 274
161#define array_needsize(base,cur,cnt,init) \ 275#define array_needsize(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 (base, newcnt << 1); \
168 } \ 282 } \
169 while ((cnt) > newcnt); \ 283 while ((cnt) > newcnt); \
170 \ 284 \
171 base = realloc (base, sizeof (*base) * (newcnt)); \ 285 base = ev_realloc (base, sizeof (*base) * (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(stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 }
297
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303#define array_free(stem, idx) \
304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175 305
176/*****************************************************************************/ 306/*****************************************************************************/
177
178typedef struct
179{
180 struct ev_watcher_list *head;
181 unsigned char events;
182 unsigned char reify;
183} ANFD;
184
185static ANFD *anfds;
186static int anfdmax;
187 307
188static void 308static void
189anfds_init (ANFD *base, int count) 309anfds_init (ANFD *base, int count)
190{ 310{
191 while (count--) 311 while (count--)
196 316
197 ++base; 317 ++base;
198 } 318 }
199} 319}
200 320
201typedef struct
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 (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 = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)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 {
267 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
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 (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 while ((w = (struct ev_io *)anfds [fd].head)) 405 while ((w = (struct ev_io *)anfds [fd].head))
301 { 406 {
302 ev_io_stop (w); 407 ev_io_stop (EV_A_ w);
303 event ((W)w, EV_ERROR | EV_READ | EV_WRITE); 408 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304 } 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
305} 420}
306 421
307/* called on EBADF to verify fds */ 422/* called on EBADF to verify fds */
308static void 423static void
309fd_ebadf (void) 424fd_ebadf (EV_P)
310{ 425{
311 int fd; 426 int fd;
312 427
313 for (fd = 0; fd < anfdmax; ++fd) 428 for (fd = 0; fd < anfdmax; ++fd)
314 if (anfds [fd].events) 429 if (anfds [fd].events)
315 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 430 if (!fd_valid (fd) == -1 && errno == EBADF)
316 fd_kill (fd); 431 fd_kill (EV_A_ fd);
317} 432}
318 433
319/* 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 */
320static void 435static void
321fd_enomem (void) 436fd_enomem (EV_P)
322{ 437{
323 int fd = anfdmax; 438 int fd;
324 439
325 while (fd--) 440 for (fd = anfdmax; fd--; )
326 if (anfds [fd].events) 441 if (anfds [fd].events)
327 { 442 {
328 close (fd);
329 fd_kill (fd); 443 fd_kill (EV_A_ fd);
330 return; 444 return;
331 } 445 }
332} 446}
333 447
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
334/*****************************************************************************/ 463/*****************************************************************************/
335 464
336static struct ev_timer **timers;
337static int timermax, timercnt;
338
339static struct ev_periodic **periodics;
340static int periodicmax, periodiccnt;
341
342static void 465static void
343upheap (WT *timers, int k) 466upheap (WT *heap, int k)
344{ 467{
345 WT w = timers [k]; 468 WT w = heap [k];
346 469
347 while (k && timers [k >> 1]->at > w->at) 470 while (k && heap [k >> 1]->at > w->at)
348 { 471 {
349 timers [k] = timers [k >> 1]; 472 heap [k] = heap [k >> 1];
350 timers [k]->active = k + 1; 473 ((W)heap [k])->active = k + 1;
351 k >>= 1; 474 k >>= 1;
352 } 475 }
353 476
354 timers [k] = w; 477 heap [k] = w;
355 timers [k]->active = k + 1; 478 ((W)heap [k])->active = k + 1;
356 479
357} 480}
358 481
359static void 482static void
360downheap (WT *timers, int N, int k) 483downheap (WT *heap, int N, int k)
361{ 484{
362 WT w = timers [k]; 485 WT w = heap [k];
363 486
364 while (k < (N >> 1)) 487 while (k < (N >> 1))
365 { 488 {
366 int j = k << 1; 489 int j = k << 1;
367 490
368 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 491 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369 ++j; 492 ++j;
370 493
371 if (w->at <= timers [j]->at) 494 if (w->at <= heap [j]->at)
372 break; 495 break;
373 496
374 timers [k] = timers [j]; 497 heap [k] = heap [j];
375 timers [k]->active = k + 1; 498 ((W)heap [k])->active = k + 1;
376 k = j; 499 k = j;
377 } 500 }
378 501
379 timers [k] = w; 502 heap [k] = w;
380 timers [k]->active = k + 1; 503 ((W)heap [k])->active = k + 1;
381} 504}
382 505
383/*****************************************************************************/ 506/*****************************************************************************/
384 507
385typedef struct 508typedef struct
386{ 509{
387 struct ev_watcher_list *head; 510 WL head;
388 sig_atomic_t volatile gotsig; 511 sig_atomic_t volatile gotsig;
389} ANSIG; 512} ANSIG;
390 513
391static ANSIG *signals; 514static ANSIG *signals;
392static int signalmax; 515static int signalmax;
408} 531}
409 532
410static void 533static void
411sighandler (int signum) 534sighandler (int signum)
412{ 535{
536#if WIN32
537 signal (signum, sighandler);
538#endif
539
413 signals [signum - 1].gotsig = 1; 540 signals [signum - 1].gotsig = 1;
414 541
415 if (!gotsig) 542 if (!gotsig)
416 { 543 {
417 int old_errno = errno; 544 int old_errno = errno;
420 errno = old_errno; 547 errno = old_errno;
421 } 548 }
422} 549}
423 550
424static void 551static void
425sigcb (struct ev_io *iow, int revents) 552sigcb (EV_P_ struct ev_io *iow, int revents)
426{ 553{
427 struct ev_watcher_list *w; 554 WL w;
428 int signum; 555 int signum;
429 556
430 read (sigpipe [0], &revents, 1); 557 read (sigpipe [0], &revents, 1);
431 gotsig = 0; 558 gotsig = 0;
432 559
434 if (signals [signum].gotsig) 561 if (signals [signum].gotsig)
435 { 562 {
436 signals [signum].gotsig = 0; 563 signals [signum].gotsig = 0;
437 564
438 for (w = signals [signum].head; w; w = w->next) 565 for (w = signals [signum].head; w; w = w->next)
439 event ((W)w, EV_SIGNAL); 566 event (EV_A_ (W)w, EV_SIGNAL);
440 } 567 }
441} 568}
442 569
443static void 570static void
444siginit (void) 571siginit (EV_P)
445{ 572{
446#ifndef WIN32 573#ifndef WIN32
447 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 574 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); 575 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449 576
451 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 578 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 579 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453#endif 580#endif
454 581
455 ev_io_set (&sigev, sigpipe [0], EV_READ); 582 ev_io_set (&sigev, sigpipe [0], EV_READ);
456 ev_io_start (&sigev); 583 ev_io_start (EV_A_ &sigev);
584 ev_unref (EV_A); /* child watcher should not keep loop alive */
457} 585}
458 586
459/*****************************************************************************/ 587/*****************************************************************************/
460 588
461static struct ev_idle **idles;
462static int idlemax, idlecnt;
463
464static struct ev_prepare **prepares;
465static int preparemax, preparecnt;
466
467static struct ev_check **checks;
468static int checkmax, checkcnt;
469
470/*****************************************************************************/
471
472static struct ev_child *childs [PID_HASHSIZE]; 589static struct ev_child *childs [PID_HASHSIZE];
590
591#ifndef WIN32
592
473static struct ev_signal childev; 593static struct ev_signal childev;
474
475#ifndef WIN32
476 594
477#ifndef WCONTINUED 595#ifndef WCONTINUED
478# define WCONTINUED 0 596# define WCONTINUED 0
479#endif 597#endif
480 598
481static void 599static void
482child_reap (struct ev_signal *sw, int chain, int pid, int status) 600child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483{ 601{
484 struct ev_child *w; 602 struct ev_child *w;
485 603
486 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 604 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
487 if (w->pid == pid || !w->pid) 605 if (w->pid == pid || !w->pid)
488 { 606 {
489 w->priority = sw->priority; /* need to do it *now* */ 607 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
490 w->rpid = pid; 608 w->rpid = pid;
491 w->rstatus = status; 609 w->rstatus = status;
492 event ((W)w, EV_CHILD); 610 event (EV_A_ (W)w, EV_CHILD);
493 } 611 }
494} 612}
495 613
496static void 614static void
497childcb (struct ev_signal *sw, int revents) 615childcb (EV_P_ struct ev_signal *sw, int revents)
498{ 616{
499 int pid, status; 617 int pid, status;
500 618
501 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 619 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502 { 620 {
503 /* make sure we are called again until all childs have been reaped */ 621 /* make sure we are called again until all childs have been reaped */
504 event ((W)sw, EV_SIGNAL); 622 event (EV_A_ (W)sw, EV_SIGNAL);
505 623
506 child_reap (sw, pid, pid, status); 624 child_reap (EV_A_ sw, pid, pid, status);
507 child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 625 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
508 } 626 }
509} 627}
510 628
511#endif 629#endif
512 630
537 return EV_VERSION_MINOR; 655 return EV_VERSION_MINOR;
538} 656}
539 657
540/* return true if we are running with elevated privileges and should ignore env variables */ 658/* return true if we are running with elevated privileges and should ignore env variables */
541static int 659static int
542enable_secure () 660enable_secure (void)
543{ 661{
544#ifdef WIN32 662#ifdef WIN32
545 return 0; 663 return 0;
546#else 664#else
547 return getuid () != geteuid () 665 return getuid () != geteuid ()
548 || getgid () != getegid (); 666 || getgid () != getegid ();
549#endif 667#endif
550} 668}
551 669
552int ev_init (int methods) 670int
671ev_method (EV_P)
553{ 672{
673 return method;
674}
675
676static void
677loop_init (EV_P_ int methods)
678{
554 if (!ev_method) 679 if (!method)
555 { 680 {
556#if EV_USE_MONOTONIC 681#if EV_USE_MONOTONIC
557 { 682 {
558 struct timespec ts; 683 struct timespec ts;
559 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 684 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560 have_monotonic = 1; 685 have_monotonic = 1;
561 } 686 }
562#endif 687#endif
563 688
564 ev_now = ev_time (); 689 rt_now = ev_time ();
565 now = get_clock (); 690 mn_now = get_clock ();
566 now_floor = now; 691 now_floor = mn_now;
567 diff = ev_now - now; 692 rtmn_diff = rt_now - mn_now;
568
569 if (pipe (sigpipe))
570 return 0;
571 693
572 if (methods == EVMETHOD_AUTO) 694 if (methods == EVMETHOD_AUTO)
573 if (!enable_secure () && getenv ("LIBEV_METHODS")) 695 if (!enable_secure () && getenv ("LIBEV_METHODS"))
574 methods = atoi (getenv ("LIBEV_METHODS")); 696 methods = atoi (getenv ("LIBEV_METHODS"));
575 else 697 else
576 methods = EVMETHOD_ANY; 698 methods = EVMETHOD_ANY;
577 699
578 ev_method = 0; 700 method = 0;
701#if EV_USE_WIN32
702 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
703#endif
579#if EV_USE_KQUEUE 704#if EV_USE_KQUEUE
580 if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); 705 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
581#endif 706#endif
582#if EV_USE_EPOLL 707#if EV_USE_EPOLL
583 if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); 708 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
584#endif 709#endif
585#if EV_USE_POLL 710#if EV_USE_POLL
586 if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); 711 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
587#endif 712#endif
588#if EV_USE_SELECT 713#if EV_USE_SELECT
589 if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); 714 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
590#endif 715#endif
591 716
717 ev_watcher_init (&sigev, sigcb);
718 ev_set_priority (&sigev, EV_MAXPRI);
719 }
720}
721
722void
723loop_destroy (EV_P)
724{
725 int i;
726
727#if EV_USE_WIN32
728 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
729#endif
730#if EV_USE_KQUEUE
731 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
732#endif
733#if EV_USE_EPOLL
734 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
735#endif
736#if EV_USE_POLL
737 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
738#endif
739#if EV_USE_SELECT
740 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
741#endif
742
743 for (i = NUMPRI; i--; )
744 array_free (pending, [i]);
745
746 /* have to use the microsoft-never-gets-it-right macro */
747 array_free_microshit (fdchange);
748 array_free_microshit (timer);
749 array_free_microshit (periodic);
750 array_free_microshit (idle);
751 array_free_microshit (prepare);
752 array_free_microshit (check);
753
754 method = 0;
755}
756
757static void
758loop_fork (EV_P)
759{
760#if EV_USE_EPOLL
761 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
762#endif
763#if EV_USE_KQUEUE
764 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
765#endif
766
767 if (ev_is_active (&sigev))
768 {
769 /* default loop */
770
771 ev_ref (EV_A);
772 ev_io_stop (EV_A_ &sigev);
773 close (sigpipe [0]);
774 close (sigpipe [1]);
775
776 while (pipe (sigpipe))
777 syserr ("(libev) error creating pipe");
778
779 siginit (EV_A);
780 }
781
782 postfork = 0;
783}
784
785#if EV_MULTIPLICITY
786struct ev_loop *
787ev_loop_new (int methods)
788{
789 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
790
791 memset (loop, 0, sizeof (struct ev_loop));
792
793 loop_init (EV_A_ methods);
794
795 if (ev_method (EV_A))
796 return loop;
797
798 return 0;
799}
800
801void
802ev_loop_destroy (EV_P)
803{
804 loop_destroy (EV_A);
805 ev_free (loop);
806}
807
808void
809ev_loop_fork (EV_P)
810{
811 postfork = 1;
812}
813
814#endif
815
816#if EV_MULTIPLICITY
817struct ev_loop default_loop_struct;
818static struct ev_loop *default_loop;
819
820struct ev_loop *
821#else
822static int default_loop;
823
824int
825#endif
826ev_default_loop (int methods)
827{
828 if (sigpipe [0] == sigpipe [1])
829 if (pipe (sigpipe))
830 return 0;
831
832 if (!default_loop)
833 {
834#if EV_MULTIPLICITY
835 struct ev_loop *loop = default_loop = &default_loop_struct;
836#else
837 default_loop = 1;
838#endif
839
840 loop_init (EV_A_ methods);
841
592 if (ev_method) 842 if (ev_method (EV_A))
593 { 843 {
594 ev_watcher_init (&sigev, sigcb);
595 ev_set_priority (&sigev, EV_MAXPRI);
596 siginit (); 844 siginit (EV_A);
597 845
598#ifndef WIN32 846#ifndef WIN32
599 ev_signal_init (&childev, childcb, SIGCHLD); 847 ev_signal_init (&childev, childcb, SIGCHLD);
600 ev_set_priority (&childev, EV_MAXPRI); 848 ev_set_priority (&childev, EV_MAXPRI);
601 ev_signal_start (&childev); 849 ev_signal_start (EV_A_ &childev);
850 ev_unref (EV_A); /* child watcher should not keep loop alive */
602#endif 851#endif
603 } 852 }
853 else
854 default_loop = 0;
604 } 855 }
605 856
606 return ev_method; 857 return default_loop;
858}
859
860void
861ev_default_destroy (void)
862{
863#if EV_MULTIPLICITY
864 struct ev_loop *loop = default_loop;
865#endif
866
867#ifndef WIN32
868 ev_ref (EV_A); /* child watcher */
869 ev_signal_stop (EV_A_ &childev);
870#endif
871
872 ev_ref (EV_A); /* signal watcher */
873 ev_io_stop (EV_A_ &sigev);
874
875 close (sigpipe [0]); sigpipe [0] = 0;
876 close (sigpipe [1]); sigpipe [1] = 0;
877
878 loop_destroy (EV_A);
879}
880
881void
882ev_default_fork (void)
883{
884#if EV_MULTIPLICITY
885 struct ev_loop *loop = default_loop;
886#endif
887
888 if (method)
889 postfork = 1;
607} 890}
608 891
609/*****************************************************************************/ 892/*****************************************************************************/
610 893
611void
612ev_fork_prepare (void)
613{
614 /* nop */
615}
616
617void
618ev_fork_parent (void)
619{
620 /* nop */
621}
622
623void
624ev_fork_child (void)
625{
626#if EV_USE_EPOLL
627 if (ev_method == EVMETHOD_EPOLL)
628 epoll_postfork_child ();
629#endif
630
631 ev_io_stop (&sigev);
632 close (sigpipe [0]);
633 close (sigpipe [1]);
634 pipe (sigpipe);
635 siginit ();
636}
637
638/*****************************************************************************/
639
640static void 894static void
641call_pending (void) 895call_pending (EV_P)
642{ 896{
643 int pri; 897 int pri;
644 898
645 for (pri = NUMPRI; pri--; ) 899 for (pri = NUMPRI; pri--; )
646 while (pendingcnt [pri]) 900 while (pendingcnt [pri])
648 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 902 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649 903
650 if (p->w) 904 if (p->w)
651 { 905 {
652 p->w->pending = 0; 906 p->w->pending = 0;
653 p->w->cb (p->w, p->events); 907 p->w->cb (EV_A_ p->w, p->events);
654 } 908 }
655 } 909 }
656} 910}
657 911
658static void 912static void
659timers_reify (void) 913timers_reify (EV_P)
660{ 914{
661 while (timercnt && timers [0]->at <= now) 915 while (timercnt && ((WT)timers [0])->at <= mn_now)
662 { 916 {
663 struct ev_timer *w = timers [0]; 917 struct ev_timer *w = timers [0];
918
919 assert (("inactive timer on timer heap detected", ev_is_active (w)));
664 920
665 /* first reschedule or stop timer */ 921 /* first reschedule or stop timer */
666 if (w->repeat) 922 if (w->repeat)
667 { 923 {
668 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 924 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
669 w->at = now + w->repeat; 925 ((WT)w)->at = mn_now + w->repeat;
670 downheap ((WT *)timers, timercnt, 0); 926 downheap ((WT *)timers, timercnt, 0);
671 } 927 }
672 else 928 else
673 ev_timer_stop (w); /* nonrepeating: stop timer */ 929 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674 930
675 event ((W)w, EV_TIMEOUT); 931 event (EV_A_ (W)w, EV_TIMEOUT);
676 } 932 }
677} 933}
678 934
679static void 935static void
680periodics_reify (void) 936periodics_reify (EV_P)
681{ 937{
682 while (periodiccnt && periodics [0]->at <= ev_now) 938 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
683 { 939 {
684 struct ev_periodic *w = periodics [0]; 940 struct ev_periodic *w = periodics [0];
941
942 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
685 943
686 /* first reschedule or stop timer */ 944 /* first reschedule or stop timer */
687 if (w->interval) 945 if (w->interval)
688 { 946 {
689 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 947 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 948 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
691 downheap ((WT *)periodics, periodiccnt, 0); 949 downheap ((WT *)periodics, periodiccnt, 0);
692 } 950 }
693 else 951 else
694 ev_periodic_stop (w); /* nonrepeating: stop timer */ 952 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695 953
696 event ((W)w, EV_PERIODIC); 954 event (EV_A_ (W)w, EV_PERIODIC);
697 } 955 }
698} 956}
699 957
700static void 958static void
701periodics_reschedule (ev_tstamp diff) 959periodics_reschedule (EV_P)
702{ 960{
703 int i; 961 int i;
704 962
705 /* adjust periodics after time jump */ 963 /* adjust periodics after time jump */
706 for (i = 0; i < periodiccnt; ++i) 964 for (i = 0; i < periodiccnt; ++i)
707 { 965 {
708 struct ev_periodic *w = periodics [i]; 966 struct ev_periodic *w = periodics [i];
709 967
710 if (w->interval) 968 if (w->interval)
711 { 969 {
712 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 970 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
713 971
714 if (fabs (diff) >= 1e-4) 972 if (fabs (diff) >= 1e-4)
715 { 973 {
716 ev_periodic_stop (w); 974 ev_periodic_stop (EV_A_ w);
717 ev_periodic_start (w); 975 ev_periodic_start (EV_A_ w);
718 976
719 i = 0; /* restart loop, inefficient, but time jumps should be rare */ 977 i = 0; /* restart loop, inefficient, but time jumps should be rare */
720 } 978 }
721 } 979 }
722 } 980 }
723} 981}
724 982
725static int 983inline int
726time_update_monotonic (void) 984time_update_monotonic (EV_P)
727{ 985{
728 now = get_clock (); 986 mn_now = get_clock ();
729 987
730 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) 988 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731 { 989 {
732 ev_now = now + diff; 990 rt_now = rtmn_diff + mn_now;
733 return 0; 991 return 0;
734 } 992 }
735 else 993 else
736 { 994 {
737 now_floor = now; 995 now_floor = mn_now;
738 ev_now = ev_time (); 996 rt_now = ev_time ();
739 return 1; 997 return 1;
740 } 998 }
741} 999}
742 1000
743static void 1001static void
744time_update (void) 1002time_update (EV_P)
745{ 1003{
746 int i; 1004 int i;
747 1005
748#if EV_USE_MONOTONIC 1006#if EV_USE_MONOTONIC
749 if (expect_true (have_monotonic)) 1007 if (expect_true (have_monotonic))
750 { 1008 {
751 if (time_update_monotonic ()) 1009 if (time_update_monotonic (EV_A))
752 { 1010 {
753 ev_tstamp odiff = diff; 1011 ev_tstamp odiff = rtmn_diff;
754 1012
755 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1013 for (i = 4; --i; ) /* loop a few times, before making important decisions */
756 { 1014 {
757 diff = ev_now - now; 1015 rtmn_diff = rt_now - mn_now;
758 1016
759 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1017 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760 return; /* all is well */ 1018 return; /* all is well */
761 1019
762 ev_now = ev_time (); 1020 rt_now = ev_time ();
763 now = get_clock (); 1021 mn_now = get_clock ();
764 now_floor = now; 1022 now_floor = mn_now;
765 } 1023 }
766 1024
767 periodics_reschedule (diff - odiff); 1025 periodics_reschedule (EV_A);
768 /* no timer adjustment, as the monotonic clock doesn't jump */ 1026 /* no timer adjustment, as the monotonic clock doesn't jump */
1027 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769 } 1028 }
770 } 1029 }
771 else 1030 else
772#endif 1031#endif
773 { 1032 {
774 ev_now = ev_time (); 1033 rt_now = ev_time ();
775 1034
776 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1035 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777 { 1036 {
778 periodics_reschedule (ev_now - now); 1037 periodics_reschedule (EV_A);
779 1038
780 /* adjust timers. this is easy, as the offset is the same for all */ 1039 /* adjust timers. this is easy, as the offset is the same for all */
781 for (i = 0; i < timercnt; ++i) 1040 for (i = 0; i < timercnt; ++i)
782 timers [i]->at += diff; 1041 ((WT)timers [i])->at += rt_now - mn_now;
783 } 1042 }
784 1043
785 now = ev_now; 1044 mn_now = rt_now;
786 } 1045 }
787} 1046}
788 1047
789int ev_loop_done; 1048void
1049ev_ref (EV_P)
1050{
1051 ++activecnt;
1052}
790 1053
1054void
1055ev_unref (EV_P)
1056{
1057 --activecnt;
1058}
1059
1060static int loop_done;
1061
1062void
791void ev_loop (int flags) 1063ev_loop (EV_P_ int flags)
792{ 1064{
793 double block; 1065 double block;
794 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1066 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
795 1067
796 do 1068 do
797 { 1069 {
798 /* queue check watchers (and execute them) */ 1070 /* queue check watchers (and execute them) */
799 if (expect_false (preparecnt)) 1071 if (expect_false (preparecnt))
800 { 1072 {
801 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802 call_pending (); 1074 call_pending (EV_A);
803 } 1075 }
804 1076
1077 /* we might have forked, so reify kernel state if necessary */
1078 if (expect_false (postfork))
1079 loop_fork (EV_A);
1080
805 /* update fd-related kernel structures */ 1081 /* update fd-related kernel structures */
806 fd_reify (); 1082 fd_reify (EV_A);
807 1083
808 /* calculate blocking time */ 1084 /* calculate blocking time */
809 1085
810 /* we only need this for !monotonic clockor timers, but as we basically 1086 /* we only need this for !monotonic clockor timers, but as we basically
811 always have timers, we just calculate it always */ 1087 always have timers, we just calculate it always */
812#if EV_USE_MONOTONIC 1088#if EV_USE_MONOTONIC
813 if (expect_true (have_monotonic)) 1089 if (expect_true (have_monotonic))
814 time_update_monotonic (); 1090 time_update_monotonic (EV_A);
815 else 1091 else
816#endif 1092#endif
817 { 1093 {
818 ev_now = ev_time (); 1094 rt_now = ev_time ();
819 now = ev_now; 1095 mn_now = rt_now;
820 } 1096 }
821 1097
822 if (flags & EVLOOP_NONBLOCK || idlecnt) 1098 if (flags & EVLOOP_NONBLOCK || idlecnt)
823 block = 0.; 1099 block = 0.;
824 else 1100 else
825 { 1101 {
826 block = MAX_BLOCKTIME; 1102 block = MAX_BLOCKTIME;
827 1103
828 if (timercnt) 1104 if (timercnt)
829 { 1105 {
830 ev_tstamp to = timers [0]->at - now + method_fudge; 1106 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
831 if (block > to) block = to; 1107 if (block > to) block = to;
832 } 1108 }
833 1109
834 if (periodiccnt) 1110 if (periodiccnt)
835 { 1111 {
836 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1112 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
837 if (block > to) block = to; 1113 if (block > to) block = to;
838 } 1114 }
839 1115
840 if (block < 0.) block = 0.; 1116 if (block < 0.) block = 0.;
841 } 1117 }
842 1118
843 method_poll (block); 1119 method_poll (EV_A_ block);
844 1120
845 /* update ev_now, do magic */ 1121 /* update rt_now, do magic */
846 time_update (); 1122 time_update (EV_A);
847 1123
848 /* queue pending timers and reschedule them */ 1124 /* queue pending timers and reschedule them */
849 timers_reify (); /* relative timers called last */ 1125 timers_reify (EV_A); /* relative timers called last */
850 periodics_reify (); /* absolute timers called first */ 1126 periodics_reify (EV_A); /* absolute timers called first */
851 1127
852 /* queue idle watchers unless io or timers are pending */ 1128 /* queue idle watchers unless io or timers are pending */
853 if (!pendingcnt) 1129 if (!pendingcnt)
854 queue_events ((W *)idles, idlecnt, EV_IDLE); 1130 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855 1131
856 /* queue check watchers, to be executed first */ 1132 /* queue check watchers, to be executed first */
857 if (checkcnt) 1133 if (checkcnt)
858 queue_events ((W *)checks, checkcnt, EV_CHECK); 1134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859 1135
860 call_pending (); 1136 call_pending (EV_A);
861 } 1137 }
862 while (!ev_loop_done); 1138 while (activecnt && !loop_done);
863 1139
864 if (ev_loop_done != 2) 1140 if (loop_done != 2)
865 ev_loop_done = 0; 1141 loop_done = 0;
1142}
1143
1144void
1145ev_unloop (EV_P_ int how)
1146{
1147 loop_done = how;
866} 1148}
867 1149
868/*****************************************************************************/ 1150/*****************************************************************************/
869 1151
870static void 1152inline void
871wlist_add (WL *head, WL elem) 1153wlist_add (WL *head, WL elem)
872{ 1154{
873 elem->next = *head; 1155 elem->next = *head;
874 *head = elem; 1156 *head = elem;
875} 1157}
876 1158
877static void 1159inline void
878wlist_del (WL *head, WL elem) 1160wlist_del (WL *head, WL elem)
879{ 1161{
880 while (*head) 1162 while (*head)
881 { 1163 {
882 if (*head == elem) 1164 if (*head == elem)
887 1169
888 head = &(*head)->next; 1170 head = &(*head)->next;
889 } 1171 }
890} 1172}
891 1173
892static void 1174inline void
893ev_clear_pending (W w) 1175ev_clear_pending (EV_P_ W w)
894{ 1176{
895 if (w->pending) 1177 if (w->pending)
896 { 1178 {
897 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1179 pendings [ABSPRI (w)][w->pending - 1].w = 0;
898 w->pending = 0; 1180 w->pending = 0;
899 } 1181 }
900} 1182}
901 1183
902static void 1184inline void
903ev_start (W w, int active) 1185ev_start (EV_P_ W w, int active)
904{ 1186{
905 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1187 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1188 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907 1189
908 w->active = active; 1190 w->active = active;
1191 ev_ref (EV_A);
909} 1192}
910 1193
911static void 1194inline void
912ev_stop (W w) 1195ev_stop (EV_P_ W w)
913{ 1196{
1197 ev_unref (EV_A);
914 w->active = 0; 1198 w->active = 0;
915} 1199}
916 1200
917/*****************************************************************************/ 1201/*****************************************************************************/
918 1202
919void 1203void
920ev_io_start (struct ev_io *w) 1204ev_io_start (EV_P_ struct ev_io *w)
921{ 1205{
922 int fd = w->fd; 1206 int fd = w->fd;
923 1207
924 if (ev_is_active (w)) 1208 if (ev_is_active (w))
925 return; 1209 return;
926 1210
927 assert (("ev_io_start called with negative fd", fd >= 0)); 1211 assert (("ev_io_start called with negative fd", fd >= 0));
928 1212
929 ev_start ((W)w, 1); 1213 ev_start (EV_A_ (W)w, 1);
930 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1214 array_needsize (anfds, anfdmax, fd + 1, anfds_init);
931 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1215 wlist_add ((WL *)&anfds[fd].head, (WL)w);
932 1216
933 fd_change (fd); 1217 fd_change (EV_A_ fd);
934} 1218}
935 1219
936void 1220void
937ev_io_stop (struct ev_io *w) 1221ev_io_stop (EV_P_ struct ev_io *w)
938{ 1222{
939 ev_clear_pending ((W)w); 1223 ev_clear_pending (EV_A_ (W)w);
940 if (!ev_is_active (w)) 1224 if (!ev_is_active (w))
941 return; 1225 return;
942 1226
943 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1227 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944 ev_stop ((W)w); 1228 ev_stop (EV_A_ (W)w);
945 1229
946 fd_change (w->fd); 1230 fd_change (EV_A_ w->fd);
947} 1231}
948 1232
949void 1233void
950ev_timer_start (struct ev_timer *w) 1234ev_timer_start (EV_P_ struct ev_timer *w)
951{ 1235{
952 if (ev_is_active (w)) 1236 if (ev_is_active (w))
953 return; 1237 return;
954 1238
955 w->at += now; 1239 ((WT)w)->at += mn_now;
956 1240
957 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1241 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958 1242
959 ev_start ((W)w, ++timercnt); 1243 ev_start (EV_A_ (W)w, ++timercnt);
960 array_needsize (timers, timermax, timercnt, ); 1244 array_needsize (timers, timermax, timercnt, (void));
961 timers [timercnt - 1] = w; 1245 timers [timercnt - 1] = w;
962 upheap ((WT *)timers, timercnt - 1); 1246 upheap ((WT *)timers, timercnt - 1);
963}
964 1247
1248 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1249}
1250
965void 1251void
966ev_timer_stop (struct ev_timer *w) 1252ev_timer_stop (EV_P_ struct ev_timer *w)
967{ 1253{
968 ev_clear_pending ((W)w); 1254 ev_clear_pending (EV_A_ (W)w);
969 if (!ev_is_active (w)) 1255 if (!ev_is_active (w))
970 return; 1256 return;
971 1257
1258 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1259
972 if (w->active < timercnt--) 1260 if (((W)w)->active < timercnt--)
973 { 1261 {
974 timers [w->active - 1] = timers [timercnt]; 1262 timers [((W)w)->active - 1] = timers [timercnt];
975 downheap ((WT *)timers, timercnt, w->active - 1); 1263 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976 } 1264 }
977 1265
978 w->at = w->repeat; 1266 ((WT)w)->at = w->repeat;
979 1267
980 ev_stop ((W)w); 1268 ev_stop (EV_A_ (W)w);
981} 1269}
982 1270
983void 1271void
984ev_timer_again (struct ev_timer *w) 1272ev_timer_again (EV_P_ struct ev_timer *w)
985{ 1273{
986 if (ev_is_active (w)) 1274 if (ev_is_active (w))
987 { 1275 {
988 if (w->repeat) 1276 if (w->repeat)
989 { 1277 {
990 w->at = now + w->repeat; 1278 ((WT)w)->at = mn_now + w->repeat;
991 downheap ((WT *)timers, timercnt, w->active - 1); 1279 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992 } 1280 }
993 else 1281 else
994 ev_timer_stop (w); 1282 ev_timer_stop (EV_A_ w);
995 } 1283 }
996 else if (w->repeat) 1284 else if (w->repeat)
997 ev_timer_start (w); 1285 ev_timer_start (EV_A_ w);
998} 1286}
999 1287
1000void 1288void
1001ev_periodic_start (struct ev_periodic *w) 1289ev_periodic_start (EV_P_ struct ev_periodic *w)
1002{ 1290{
1003 if (ev_is_active (w)) 1291 if (ev_is_active (w))
1004 return; 1292 return;
1005 1293
1006 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1294 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007 1295
1008 /* this formula differs from the one in periodic_reify because we do not always round up */ 1296 /* this formula differs from the one in periodic_reify because we do not always round up */
1009 if (w->interval) 1297 if (w->interval)
1010 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1298 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1011 1299
1012 ev_start ((W)w, ++periodiccnt); 1300 ev_start (EV_A_ (W)w, ++periodiccnt);
1013 array_needsize (periodics, periodicmax, periodiccnt, ); 1301 array_needsize (periodics, periodicmax, periodiccnt, (void));
1014 periodics [periodiccnt - 1] = w; 1302 periodics [periodiccnt - 1] = w;
1015 upheap ((WT *)periodics, periodiccnt - 1); 1303 upheap ((WT *)periodics, periodiccnt - 1);
1016}
1017 1304
1305 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1306}
1307
1018void 1308void
1019ev_periodic_stop (struct ev_periodic *w) 1309ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020{ 1310{
1021 ev_clear_pending ((W)w); 1311 ev_clear_pending (EV_A_ (W)w);
1022 if (!ev_is_active (w)) 1312 if (!ev_is_active (w))
1023 return; 1313 return;
1024 1314
1315 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1316
1025 if (w->active < periodiccnt--) 1317 if (((W)w)->active < periodiccnt--)
1026 { 1318 {
1027 periodics [w->active - 1] = periodics [periodiccnt]; 1319 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1320 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029 } 1321 }
1030 1322
1031 ev_stop ((W)w); 1323 ev_stop (EV_A_ (W)w);
1324}
1325
1326void
1327ev_idle_start (EV_P_ struct ev_idle *w)
1328{
1329 if (ev_is_active (w))
1330 return;
1331
1332 ev_start (EV_A_ (W)w, ++idlecnt);
1333 array_needsize (idles, idlemax, idlecnt, (void));
1334 idles [idlecnt - 1] = w;
1335}
1336
1337void
1338ev_idle_stop (EV_P_ struct ev_idle *w)
1339{
1340 ev_clear_pending (EV_A_ (W)w);
1341 if (ev_is_active (w))
1342 return;
1343
1344 idles [((W)w)->active - 1] = idles [--idlecnt];
1345 ev_stop (EV_A_ (W)w);
1346}
1347
1348void
1349ev_prepare_start (EV_P_ struct ev_prepare *w)
1350{
1351 if (ev_is_active (w))
1352 return;
1353
1354 ev_start (EV_A_ (W)w, ++preparecnt);
1355 array_needsize (prepares, preparemax, preparecnt, (void));
1356 prepares [preparecnt - 1] = w;
1357}
1358
1359void
1360ev_prepare_stop (EV_P_ struct ev_prepare *w)
1361{
1362 ev_clear_pending (EV_A_ (W)w);
1363 if (ev_is_active (w))
1364 return;
1365
1366 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1367 ev_stop (EV_A_ (W)w);
1368}
1369
1370void
1371ev_check_start (EV_P_ struct ev_check *w)
1372{
1373 if (ev_is_active (w))
1374 return;
1375
1376 ev_start (EV_A_ (W)w, ++checkcnt);
1377 array_needsize (checks, checkmax, checkcnt, (void));
1378 checks [checkcnt - 1] = w;
1379}
1380
1381void
1382ev_check_stop (EV_P_ struct ev_check *w)
1383{
1384 ev_clear_pending (EV_A_ (W)w);
1385 if (ev_is_active (w))
1386 return;
1387
1388 checks [((W)w)->active - 1] = checks [--checkcnt];
1389 ev_stop (EV_A_ (W)w);
1032} 1390}
1033 1391
1034#ifndef SA_RESTART 1392#ifndef SA_RESTART
1035# define SA_RESTART 0 1393# define SA_RESTART 0
1036#endif 1394#endif
1037 1395
1038void 1396void
1039ev_signal_start (struct ev_signal *w) 1397ev_signal_start (EV_P_ struct ev_signal *w)
1040{ 1398{
1399#if EV_MULTIPLICITY
1400 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1401#endif
1041 if (ev_is_active (w)) 1402 if (ev_is_active (w))
1042 return; 1403 return;
1043 1404
1044 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1405 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045 1406
1046 ev_start ((W)w, 1); 1407 ev_start (EV_A_ (W)w, 1);
1047 array_needsize (signals, signalmax, w->signum, signals_init); 1408 array_needsize (signals, signalmax, w->signum, signals_init);
1048 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1409 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049 1410
1050 if (!w->next) 1411 if (!((WL)w)->next)
1051 { 1412 {
1413#if WIN32
1414 signal (w->signum, sighandler);
1415#else
1052 struct sigaction sa; 1416 struct sigaction sa;
1053 sa.sa_handler = sighandler; 1417 sa.sa_handler = sighandler;
1054 sigfillset (&sa.sa_mask); 1418 sigfillset (&sa.sa_mask);
1055 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1419 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056 sigaction (w->signum, &sa, 0); 1420 sigaction (w->signum, &sa, 0);
1421#endif
1057 } 1422 }
1058} 1423}
1059 1424
1060void 1425void
1061ev_signal_stop (struct ev_signal *w) 1426ev_signal_stop (EV_P_ struct ev_signal *w)
1062{ 1427{
1063 ev_clear_pending ((W)w); 1428 ev_clear_pending (EV_A_ (W)w);
1064 if (!ev_is_active (w)) 1429 if (!ev_is_active (w))
1065 return; 1430 return;
1066 1431
1067 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1432 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068 ev_stop ((W)w); 1433 ev_stop (EV_A_ (W)w);
1069 1434
1070 if (!signals [w->signum - 1].head) 1435 if (!signals [w->signum - 1].head)
1071 signal (w->signum, SIG_DFL); 1436 signal (w->signum, SIG_DFL);
1072} 1437}
1073 1438
1074void 1439void
1075ev_idle_start (struct ev_idle *w) 1440ev_child_start (EV_P_ struct ev_child *w)
1076{ 1441{
1442#if EV_MULTIPLICITY
1443 assert (("child watchers are only supported in the default loop", loop == default_loop));
1444#endif
1077 if (ev_is_active (w)) 1445 if (ev_is_active (w))
1078 return; 1446 return;
1079 1447
1080 ev_start ((W)w, ++idlecnt); 1448 ev_start (EV_A_ (W)w, 1);
1081 array_needsize (idles, idlemax, idlecnt, ); 1449 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1082 idles [idlecnt - 1] = w;
1083} 1450}
1084 1451
1085void 1452void
1086ev_idle_stop (struct ev_idle *w) 1453ev_child_stop (EV_P_ struct ev_child *w)
1087{ 1454{
1088 ev_clear_pending ((W)w); 1455 ev_clear_pending (EV_A_ (W)w);
1089 if (ev_is_active (w)) 1456 if (ev_is_active (w))
1090 return; 1457 return;
1091 1458
1092 idles [w->active - 1] = idles [--idlecnt];
1093 ev_stop ((W)w);
1094}
1095
1096void
1097ev_prepare_start (struct ev_prepare *w)
1098{
1099 if (ev_is_active (w))
1100 return;
1101
1102 ev_start ((W)w, ++preparecnt);
1103 array_needsize (prepares, preparemax, preparecnt, );
1104 prepares [preparecnt - 1] = w;
1105}
1106
1107void
1108ev_prepare_stop (struct ev_prepare *w)
1109{
1110 ev_clear_pending ((W)w);
1111 if (ev_is_active (w))
1112 return;
1113
1114 prepares [w->active - 1] = prepares [--preparecnt];
1115 ev_stop ((W)w);
1116}
1117
1118void
1119ev_check_start (struct ev_check *w)
1120{
1121 if (ev_is_active (w))
1122 return;
1123
1124 ev_start ((W)w, ++checkcnt);
1125 array_needsize (checks, checkmax, checkcnt, );
1126 checks [checkcnt - 1] = w;
1127}
1128
1129void
1130ev_check_stop (struct ev_check *w)
1131{
1132 ev_clear_pending ((W)w);
1133 if (ev_is_active (w))
1134 return;
1135
1136 checks [w->active - 1] = checks [--checkcnt];
1137 ev_stop ((W)w);
1138}
1139
1140void
1141ev_child_start (struct ev_child *w)
1142{
1143 if (ev_is_active (w))
1144 return;
1145
1146 ev_start ((W)w, 1);
1147 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148}
1149
1150void
1151ev_child_stop (struct ev_child *w)
1152{
1153 ev_clear_pending ((W)w);
1154 if (ev_is_active (w))
1155 return;
1156
1157 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1459 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158 ev_stop ((W)w); 1460 ev_stop (EV_A_ (W)w);
1159} 1461}
1160 1462
1161/*****************************************************************************/ 1463/*****************************************************************************/
1162 1464
1163struct ev_once 1465struct ev_once
1167 void (*cb)(int revents, void *arg); 1469 void (*cb)(int revents, void *arg);
1168 void *arg; 1470 void *arg;
1169}; 1471};
1170 1472
1171static void 1473static void
1172once_cb (struct ev_once *once, int revents) 1474once_cb (EV_P_ struct ev_once *once, int revents)
1173{ 1475{
1174 void (*cb)(int revents, void *arg) = once->cb; 1476 void (*cb)(int revents, void *arg) = once->cb;
1175 void *arg = once->arg; 1477 void *arg = once->arg;
1176 1478
1177 ev_io_stop (&once->io); 1479 ev_io_stop (EV_A_ &once->io);
1178 ev_timer_stop (&once->to); 1480 ev_timer_stop (EV_A_ &once->to);
1179 free (once); 1481 ev_free (once);
1180 1482
1181 cb (revents, arg); 1483 cb (revents, arg);
1182} 1484}
1183 1485
1184static void 1486static void
1185once_cb_io (struct ev_io *w, int revents) 1487once_cb_io (EV_P_ struct ev_io *w, int revents)
1186{ 1488{
1187 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1489 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188} 1490}
1189 1491
1190static void 1492static void
1191once_cb_to (struct ev_timer *w, int revents) 1493once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192{ 1494{
1193 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1495 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194} 1496}
1195 1497
1196void 1498void
1197ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1499ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198{ 1500{
1199 struct ev_once *once = malloc (sizeof (struct ev_once)); 1501 struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1200 1502
1201 if (!once) 1503 if (!once)
1202 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1504 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1203 else 1505 else
1204 { 1506 {
1207 1509
1208 ev_watcher_init (&once->io, once_cb_io); 1510 ev_watcher_init (&once->io, once_cb_io);
1209 if (fd >= 0) 1511 if (fd >= 0)
1210 { 1512 {
1211 ev_io_set (&once->io, fd, events); 1513 ev_io_set (&once->io, fd, events);
1212 ev_io_start (&once->io); 1514 ev_io_start (EV_A_ &once->io);
1213 } 1515 }
1214 1516
1215 ev_watcher_init (&once->to, once_cb_to); 1517 ev_watcher_init (&once->to, once_cb_to);
1216 if (timeout >= 0.) 1518 if (timeout >= 0.)
1217 { 1519 {
1218 ev_timer_set (&once->to, timeout, 0.); 1520 ev_timer_set (&once->to, timeout, 0.);
1219 ev_timer_start (&once->to); 1521 ev_timer_start (EV_A_ &once->to);
1220 } 1522 }
1221 } 1523 }
1222} 1524}
1223 1525
1224/*****************************************************************************/
1225
1226#if 0
1227
1228struct ev_io wio;
1229
1230static void
1231sin_cb (struct ev_io *w, int revents)
1232{
1233 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234}
1235
1236static void
1237ocb (struct ev_timer *w, int revents)
1238{
1239 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240 ev_timer_stop (w);
1241 ev_timer_start (w);
1242}
1243
1244static void
1245scb (struct ev_signal *w, int revents)
1246{
1247 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248 ev_io_stop (&wio);
1249 ev_io_start (&wio);
1250}
1251
1252static void
1253gcb (struct ev_signal *w, int revents)
1254{
1255 fprintf (stderr, "generic %x\n", revents);
1256
1257}
1258
1259int main (void)
1260{
1261 ev_init (0);
1262
1263 ev_io_init (&wio, sin_cb, 0, EV_READ);
1264 ev_io_start (&wio);
1265
1266 struct ev_timer t[10000];
1267
1268#if 0
1269 int i;
1270 for (i = 0; i < 10000; ++i)
1271 {
1272 struct ev_timer *w = t + i;
1273 ev_watcher_init (w, ocb, i);
1274 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275 ev_timer_start (w);
1276 if (drand48 () < 0.5)
1277 ev_timer_stop (w);
1278 }
1279#endif
1280
1281 struct ev_timer t1;
1282 ev_timer_init (&t1, ocb, 5, 10);
1283 ev_timer_start (&t1);
1284
1285 struct ev_signal sig;
1286 ev_signal_init (&sig, scb, SIGQUIT);
1287 ev_signal_start (&sig);
1288
1289 struct ev_check cw;
1290 ev_check_init (&cw, gcb);
1291 ev_check_start (&cw);
1292
1293 struct ev_idle iw;
1294 ev_idle_init (&iw, gcb);
1295 ev_idle_start (&iw);
1296
1297 ev_loop (0);
1298
1299 return 0;
1300}
1301
1302#endif
1303
1304
1305
1306

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