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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.96 by root, Sun Nov 11 01:50:36 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
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
32# include "config.h" 37# include "config.h"
38
39# if HAVE_CLOCK_GETTIME
40# define EV_USE_MONOTONIC 1
41# define EV_USE_REALTIME 1
42# endif
43
44# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
45# define EV_USE_SELECT 1
46# endif
47
48# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
49# define EV_USE_POLL 1
50# endif
51
52# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
53# define EV_USE_EPOLL 1
54# endif
55
56# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
57# define EV_USE_KQUEUE 1
58# endif
59
33#endif 60#endif
34 61
35#include <math.h> 62#include <math.h>
36#include <stdlib.h> 63#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 64#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 65#include <stddef.h>
41 66
42#include <stdio.h> 67#include <stdio.h>
43 68
44#include <assert.h> 69#include <assert.h>
45#include <errno.h> 70#include <errno.h>
46#include <sys/types.h> 71#include <sys/types.h>
72#include <time.h>
73
74#include <signal.h>
75
47#ifndef WIN32 76#ifndef WIN32
77# include <unistd.h>
78# include <sys/time.h>
48# include <sys/wait.h> 79# include <sys/wait.h>
49#endif 80#endif
50#include <sys/time.h>
51#include <time.h>
52
53/**/ 81/**/
54 82
55#ifndef EV_USE_MONOTONIC 83#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 84# define EV_USE_MONOTONIC 1
57#endif 85#endif
58 86
59#ifndef EV_USE_SELECT 87#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 88# define EV_USE_SELECT 1
61#endif 89#endif
62 90
63#ifndef EV_USEV_POLL 91#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 92# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65#endif 93#endif
66 94
67#ifndef EV_USE_EPOLL 95#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 96# define EV_USE_EPOLL 0
69#endif 97#endif
70 98
71#ifndef EV_USE_KQUEUE 99#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 100# define EV_USE_KQUEUE 0
101#endif
102
103#ifndef EV_USE_WIN32
104# ifdef WIN32
105# define EV_USE_WIN32 0 /* it does not exist, use select */
106# undef EV_USE_SELECT
107# define EV_USE_SELECT 1
108# else
109# define EV_USE_WIN32 0
110# endif
73#endif 111#endif
74 112
75#ifndef EV_USE_REALTIME 113#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 114# define EV_USE_REALTIME 1
77#endif 115#endif
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 131#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 132#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 133#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 134/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
97 135
136#ifdef EV_H
137# include EV_H
138#else
98#include "ev.h" 139# include "ev.h"
140#endif
99 141
100#if __GNUC__ >= 3 142#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value)) 143# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 144# define inline inline
103#else 145#else
113 155
114typedef struct ev_watcher *W; 156typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 157typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 158typedef struct ev_watcher_time *WT;
117 159
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 160static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 161
122static int have_monotonic; /* runtime */ 162#include "ev_win32.c"
123
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132static int vec_max;
133#endif
134
135#if EV_USEV_POLL
136static struct pollfd *polls;
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif
141
142#if EV_USE_EPOLL
143static int epoll_fd = -1;
144
145static struct epoll_event *events;
146static int eventmax;
147#endif
148
149#if EV_USE_KQUEUE
150static int kqueue_fd;
151static struct kevent *kqueue_changes;
152static int kqueue_changemax, kqueue_changecnt;
153static struct kevent *kqueue_events;
154static int kqueue_eventmax;
155#endif
156 163
157/*****************************************************************************/ 164/*****************************************************************************/
158 165
159inline ev_tstamp 166static void (*syserr_cb)(const char *msg);
167
168void ev_set_syserr_cb (void (*cb)(const char *msg))
169{
170 syserr_cb = cb;
171}
172
173static void
174syserr (const char *msg)
175{
176 if (!msg)
177 msg = "(libev) system error";
178
179 if (syserr_cb)
180 syserr_cb (msg);
181 else
182 {
183 perror (msg);
184 abort ();
185 }
186}
187
188static void *(*alloc)(void *ptr, long size);
189
190void ev_set_allocator (void *(*cb)(void *ptr, long size))
191{
192 alloc = cb;
193}
194
195static void *
196ev_realloc (void *ptr, long size)
197{
198 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199
200 if (!ptr && size)
201 {
202 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
203 abort ();
204 }
205
206 return ptr;
207}
208
209#define ev_malloc(size) ev_realloc (0, (size))
210#define ev_free(ptr) ev_realloc ((ptr), 0)
211
212/*****************************************************************************/
213
214typedef struct
215{
216 WL head;
217 unsigned char events;
218 unsigned char reify;
219} ANFD;
220
221typedef struct
222{
223 W w;
224 int events;
225} ANPENDING;
226
227#if EV_MULTIPLICITY
228
229 struct ev_loop
230 {
231 ev_tstamp ev_rt_now;
232 #define VAR(name,decl) decl;
233 #include "ev_vars.h"
234 #undef VAR
235 };
236 #include "ev_wrap.h"
237
238 struct ev_loop default_loop_struct;
239 static struct ev_loop *default_loop;
240
241#else
242
243 ev_tstamp ev_rt_now;
244 #define VAR(name,decl) static decl;
245 #include "ev_vars.h"
246 #undef VAR
247
248 static int default_loop;
249
250#endif
251
252/*****************************************************************************/
253
254ev_tstamp
160ev_time (void) 255ev_time (void)
161{ 256{
162#if EV_USE_REALTIME 257#if EV_USE_REALTIME
163 struct timespec ts; 258 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 259 clock_gettime (CLOCK_REALTIME, &ts);
183#endif 278#endif
184 279
185 return ev_time (); 280 return ev_time ();
186} 281}
187 282
283#if EV_MULTIPLICITY
188ev_tstamp 284ev_tstamp
189ev_now (EV_P) 285ev_now (EV_P)
190{ 286{
191 return rt_now; 287 return ev_rt_now;
192} 288}
289#endif
193 290
194#define array_roundsize(base,n) ((n) | 4 & ~3) 291#define array_roundsize(type,n) ((n) | 4 & ~3)
195 292
196#define array_needsize(base,cur,cnt,init) \ 293#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 294 if (expect_false ((cnt) > cur)) \
198 { \ 295 { \
199 int newcnt = cur; \ 296 int newcnt = cur; \
200 do \ 297 do \
201 { \ 298 { \
202 newcnt = array_roundsize (base, newcnt << 1); \ 299 newcnt = array_roundsize (type, newcnt << 1); \
203 } \ 300 } \
204 while ((cnt) > newcnt); \ 301 while ((cnt) > newcnt); \
205 \ 302 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 303 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207 init (base + cur, newcnt - cur); \ 304 init (base + cur, newcnt - cur); \
208 cur = newcnt; \ 305 cur = newcnt; \
209 } 306 }
307
308#define array_slim(type,stem) \
309 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310 { \
311 stem ## max = array_roundsize (stem ## cnt >> 1); \
312 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314 }
315
316/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318#define array_free_microshit(stem) \
319 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320
321#define array_free(stem, idx) \
322 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210 323
211/*****************************************************************************/ 324/*****************************************************************************/
212
213typedef struct
214{
215 struct ev_watcher_list *head;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219
220static ANFD *anfds;
221static int anfdmax;
222 325
223static void 326static void
224anfds_init (ANFD *base, int count) 327anfds_init (ANFD *base, int count)
225{ 328{
226 while (count--) 329 while (count--)
231 334
232 ++base; 335 ++base;
233 } 336 }
234} 337}
235 338
236typedef struct 339void
237{
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245static void
246event (EV_P_ W w, int events) 340ev_feed_event (EV_P_ void *w, int revents)
247{ 341{
342 W w_ = (W)w;
343
248 if (w->pending) 344 if (w_->pending)
249 { 345 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events; 346 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251 return; 347 return;
252 } 348 }
253 349
254 w->pending = ++pendingcnt [ABSPRI (w)]; 350 w_->pending = ++pendingcnt [ABSPRI (w_)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 351 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
256 pendings [ABSPRI (w)][w->pending - 1].w = w; 352 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257 pendings [ABSPRI (w)][w->pending - 1].events = events; 353 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258} 354}
259 355
260static void 356static void
261queue_events (EV_P_ W *events, int eventcnt, int type) 357queue_events (EV_P_ W *events, int eventcnt, int type)
262{ 358{
263 int i; 359 int i;
264 360
265 for (i = 0; i < eventcnt; ++i) 361 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type); 362 ev_feed_event (EV_A_ events [i], type);
267} 363}
268 364
269static void 365inline void
270fd_event (EV_P_ int fd, int events) 366fd_event (EV_P_ int fd, int revents)
271{ 367{
272 ANFD *anfd = anfds + fd; 368 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 369 struct ev_io *w;
274 370
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 371 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
276 { 372 {
277 int ev = w->events & events; 373 int ev = w->events & revents;
278 374
279 if (ev) 375 if (ev)
280 event (EV_A_ (W)w, ev); 376 ev_feed_event (EV_A_ (W)w, ev);
281 } 377 }
378}
379
380void
381ev_feed_fd_event (EV_P_ int fd, int revents)
382{
383 fd_event (EV_A_ fd, revents);
282} 384}
283 385
284/*****************************************************************************/ 386/*****************************************************************************/
285
286static int *fdchanges;
287static int fdchangemax, fdchangecnt;
288 387
289static void 388static void
290fd_reify (EV_P) 389fd_reify (EV_P)
291{ 390{
292 int i; 391 int i;
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 401 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303 events |= w->events; 402 events |= w->events;
304 403
305 anfd->reify = 0; 404 anfd->reify = 0;
306 405
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 406 method_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 407 anfd->events = events;
311 }
312 } 408 }
313 409
314 fdchangecnt = 0; 410 fdchangecnt = 0;
315} 411}
316 412
317static void 413static void
318fd_change (EV_P_ int fd) 414fd_change (EV_P_ int fd)
319{ 415{
320 if (anfds [fd].reify || fdchangecnt < 0) 416 if (anfds [fd].reify)
321 return; 417 return;
322 418
323 anfds [fd].reify = 1; 419 anfds [fd].reify = 1;
324 420
325 ++fdchangecnt; 421 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 422 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327 fdchanges [fdchangecnt - 1] = fd; 423 fdchanges [fdchangecnt - 1] = fd;
328} 424}
329 425
330static void 426static void
331fd_kill (EV_P_ int fd) 427fd_kill (EV_P_ int fd)
333 struct ev_io *w; 429 struct ev_io *w;
334 430
335 while ((w = (struct ev_io *)anfds [fd].head)) 431 while ((w = (struct ev_io *)anfds [fd].head))
336 { 432 {
337 ev_io_stop (EV_A_ w); 433 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 434 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 435 }
436}
437
438static int
439fd_valid (int fd)
440{
441#ifdef WIN32
442 return !!win32_get_osfhandle (fd);
443#else
444 return fcntl (fd, F_GETFD) != -1;
445#endif
340} 446}
341 447
342/* called on EBADF to verify fds */ 448/* called on EBADF to verify fds */
343static void 449static void
344fd_ebadf (EV_P) 450fd_ebadf (EV_P)
345{ 451{
346 int fd; 452 int fd;
347 453
348 for (fd = 0; fd < anfdmax; ++fd) 454 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 455 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 456 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 457 fd_kill (EV_A_ fd);
352} 458}
353 459
354/* called on ENOMEM in select/poll to kill some fds and retry */ 460/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 461static void
356fd_enomem (EV_P) 462fd_enomem (EV_P)
357{ 463{
358 int fd = anfdmax; 464 int fd;
359 465
360 while (fd--) 466 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 467 if (anfds [fd].events)
362 { 468 {
363 close (fd);
364 fd_kill (EV_A_ fd); 469 fd_kill (EV_A_ fd);
365 return; 470 return;
366 } 471 }
367} 472}
368 473
474/* usually called after fork if method needs to re-arm all fds from scratch */
475static void
476fd_rearm_all (EV_P)
477{
478 int fd;
479
480 /* this should be highly optimised to not do anything but set a flag */
481 for (fd = 0; fd < anfdmax; ++fd)
482 if (anfds [fd].events)
483 {
484 anfds [fd].events = 0;
485 fd_change (EV_A_ fd);
486 }
487}
488
369/*****************************************************************************/ 489/*****************************************************************************/
370 490
371static struct ev_timer **timers;
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void 491static void
378upheap (WT *timers, int k) 492upheap (WT *heap, int k)
379{ 493{
380 WT w = timers [k]; 494 WT w = heap [k];
381 495
382 while (k && timers [k >> 1]->at > w->at) 496 while (k && heap [k >> 1]->at > w->at)
383 { 497 {
384 timers [k] = timers [k >> 1]; 498 heap [k] = heap [k >> 1];
385 timers [k]->active = k + 1; 499 ((W)heap [k])->active = k + 1;
386 k >>= 1; 500 k >>= 1;
387 } 501 }
388 502
389 timers [k] = w; 503 heap [k] = w;
390 timers [k]->active = k + 1; 504 ((W)heap [k])->active = k + 1;
391 505
392} 506}
393 507
394static void 508static void
395downheap (WT *timers, int N, int k) 509downheap (WT *heap, int N, int k)
396{ 510{
397 WT w = timers [k]; 511 WT w = heap [k];
398 512
399 while (k < (N >> 1)) 513 while (k < (N >> 1))
400 { 514 {
401 int j = k << 1; 515 int j = k << 1;
402 516
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 517 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404 ++j; 518 ++j;
405 519
406 if (w->at <= timers [j]->at) 520 if (w->at <= heap [j]->at)
407 break; 521 break;
408 522
409 timers [k] = timers [j]; 523 heap [k] = heap [j];
410 timers [k]->active = k + 1; 524 ((W)heap [k])->active = k + 1;
411 k = j; 525 k = j;
412 } 526 }
413 527
414 timers [k] = w; 528 heap [k] = w;
415 timers [k]->active = k + 1; 529 ((W)heap [k])->active = k + 1;
530}
531
532inline void
533adjustheap (WT *heap, int N, int k, ev_tstamp at)
534{
535 ev_tstamp old_at = heap [k]->at;
536 heap [k]->at = at;
537
538 if (old_at < at)
539 downheap (heap, N, k);
540 else
541 upheap (heap, k);
416} 542}
417 543
418/*****************************************************************************/ 544/*****************************************************************************/
419 545
420typedef struct 546typedef struct
421{ 547{
422 struct ev_watcher_list *head; 548 WL head;
423 sig_atomic_t volatile gotsig; 549 sig_atomic_t volatile gotsig;
424} ANSIG; 550} ANSIG;
425 551
426static ANSIG *signals; 552static ANSIG *signals;
427static int signalmax; 553static int signalmax;
443} 569}
444 570
445static void 571static void
446sighandler (int signum) 572sighandler (int signum)
447{ 573{
574#if WIN32
575 signal (signum, sighandler);
576#endif
577
448 signals [signum - 1].gotsig = 1; 578 signals [signum - 1].gotsig = 1;
449 579
450 if (!gotsig) 580 if (!gotsig)
451 { 581 {
452 int old_errno = errno; 582 int old_errno = errno;
453 gotsig = 1; 583 gotsig = 1;
584#ifdef WIN32
585 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586#else
454 write (sigpipe [1], &signum, 1); 587 write (sigpipe [1], &signum, 1);
588#endif
455 errno = old_errno; 589 errno = old_errno;
456 } 590 }
457} 591}
458 592
593void
594ev_feed_signal_event (EV_P_ int signum)
595{
596 WL w;
597
598#if EV_MULTIPLICITY
599 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
600#endif
601
602 --signum;
603
604 if (signum < 0 || signum >= signalmax)
605 return;
606
607 signals [signum].gotsig = 0;
608
609 for (w = signals [signum].head; w; w = w->next)
610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611}
612
459static void 613static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 614sigcb (EV_P_ struct ev_io *iow, int revents)
461{ 615{
462 struct ev_watcher_list *w;
463 int signum; 616 int signum;
464 617
618#ifdef WIN32
619 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620#else
465 read (sigpipe [0], &revents, 1); 621 read (sigpipe [0], &revents, 1);
622#endif
466 gotsig = 0; 623 gotsig = 0;
467 624
468 for (signum = signalmax; signum--; ) 625 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 626 if (signals [signum].gotsig)
470 { 627 ev_feed_signal_event (EV_A_ signum + 1);
471 signals [signum].gotsig = 0;
472
473 for (w = signals [signum].head; w; w = w->next)
474 event (EV_A_ (W)w, EV_SIGNAL);
475 }
476} 628}
477 629
478static void 630static void
479siginit (EV_P) 631siginit (EV_P)
480{ 632{
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 638 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 639 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif 640#endif
489 641
490 ev_io_set (&sigev, sigpipe [0], EV_READ); 642 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev); 643 ev_io_start (EV_A_ &sigev);
644 ev_unref (EV_A); /* child watcher should not keep loop alive */
492} 645}
493 646
494/*****************************************************************************/ 647/*****************************************************************************/
495 648
496static struct ev_idle **idles;
497static int idlemax, idlecnt;
498
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506
507static struct ev_child *childs [PID_HASHSIZE]; 649static struct ev_child *childs [PID_HASHSIZE];
650
651#ifndef WIN32
652
508static struct ev_signal childev; 653static struct ev_signal childev;
509
510#ifndef WIN32
511 654
512#ifndef WCONTINUED 655#ifndef WCONTINUED
513# define WCONTINUED 0 656# define WCONTINUED 0
514#endif 657#endif
515 658
519 struct ev_child *w; 662 struct ev_child *w;
520 663
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 664 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid) 665 if (w->pid == pid || !w->pid)
523 { 666 {
524 w->priority = sw->priority; /* need to do it *now* */ 667 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525 w->rpid = pid; 668 w->rpid = pid;
526 w->rstatus = status; 669 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD); 670 ev_feed_event (EV_A_ (W)w, EV_CHILD);
528 } 671 }
529} 672}
530 673
531static void 674static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 675childcb (EV_P_ struct ev_signal *sw, int revents)
534 int pid, status; 677 int pid, status;
535 678
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 679 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 680 {
538 /* make sure we are called again until all childs have been reaped */ 681 /* make sure we are called again until all childs have been reaped */
539 event (EV_A_ (W)sw, EV_SIGNAL); 682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 683
541 child_reap (EV_A_ sw, pid, pid, status); 684 child_reap (EV_A_ sw, pid, pid, status);
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 685 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
543 } 686 }
544} 687}
551# include "ev_kqueue.c" 694# include "ev_kqueue.c"
552#endif 695#endif
553#if EV_USE_EPOLL 696#if EV_USE_EPOLL
554# include "ev_epoll.c" 697# include "ev_epoll.c"
555#endif 698#endif
556#if EV_USEV_POLL 699#if EV_USE_POLL
557# include "ev_poll.c" 700# include "ev_poll.c"
558#endif 701#endif
559#if EV_USE_SELECT 702#if EV_USE_SELECT
560# include "ev_select.c" 703# include "ev_select.c"
561#endif 704#endif
588ev_method (EV_P) 731ev_method (EV_P)
589{ 732{
590 return method; 733 return method;
591} 734}
592 735
593int 736static void
594ev_init (EV_P_ int methods) 737loop_init (EV_P_ int methods)
595{ 738{
596 if (!method) 739 if (!method)
597 { 740 {
598#if EV_USE_MONOTONIC 741#if EV_USE_MONOTONIC
599 { 742 {
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 744 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 745 have_monotonic = 1;
603 } 746 }
604#endif 747#endif
605 748
606 rt_now = ev_time (); 749 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 750 mn_now = get_clock ();
608 now_floor = mn_now; 751 now_floor = mn_now;
609 diff = rt_now - mn_now; 752 rtmn_diff = ev_rt_now - mn_now;
610
611 if (pipe (sigpipe))
612 return 0;
613 753
614 if (methods == EVMETHOD_AUTO) 754 if (methods == EVMETHOD_AUTO)
615 if (!enable_secure () && getenv ("LIBmethodS")) 755 if (!enable_secure () && getenv ("LIBEV_METHODS"))
616 methods = atoi (getenv ("LIBmethodS")); 756 methods = atoi (getenv ("LIBEV_METHODS"));
617 else 757 else
618 methods = EVMETHOD_ANY; 758 methods = EVMETHOD_ANY;
619 759
620 method = 0; 760 method = 0;
761#if EV_USE_WIN32
762 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
763#endif
621#if EV_USE_KQUEUE 764#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 765 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623#endif 766#endif
624#if EV_USE_EPOLL 767#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 768 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
626#endif 769#endif
627#if EV_USEV_POLL 770#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 771 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629#endif 772#endif
630#if EV_USE_SELECT 773#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632#endif 775#endif
633 776
777 ev_init (&sigev, sigcb);
778 ev_set_priority (&sigev, EV_MAXPRI);
779 }
780}
781
782void
783loop_destroy (EV_P)
784{
785 int i;
786
787#if EV_USE_WIN32
788 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
789#endif
790#if EV_USE_KQUEUE
791 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
792#endif
793#if EV_USE_EPOLL
794 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
795#endif
796#if EV_USE_POLL
797 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
798#endif
799#if EV_USE_SELECT
800 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
801#endif
802
803 for (i = NUMPRI; i--; )
804 array_free (pending, [i]);
805
806 /* have to use the microsoft-never-gets-it-right macro */
807 array_free_microshit (fdchange);
808 array_free_microshit (timer);
809#if EV_PERIODICS
810 array_free_microshit (periodic);
811#endif
812 array_free_microshit (idle);
813 array_free_microshit (prepare);
814 array_free_microshit (check);
815
816 method = 0;
817}
818
819static void
820loop_fork (EV_P)
821{
822#if EV_USE_EPOLL
823 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
824#endif
825#if EV_USE_KQUEUE
826 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
827#endif
828
829 if (ev_is_active (&sigev))
830 {
831 /* default loop */
832
833 ev_ref (EV_A);
834 ev_io_stop (EV_A_ &sigev);
835 close (sigpipe [0]);
836 close (sigpipe [1]);
837
838 while (pipe (sigpipe))
839 syserr ("(libev) error creating pipe");
840
841 siginit (EV_A);
842 }
843
844 postfork = 0;
845}
846
847#if EV_MULTIPLICITY
848struct ev_loop *
849ev_loop_new (int methods)
850{
851 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
852
853 memset (loop, 0, sizeof (struct ev_loop));
854
855 loop_init (EV_A_ methods);
856
857 if (ev_method (EV_A))
858 return loop;
859
860 return 0;
861}
862
863void
864ev_loop_destroy (EV_P)
865{
866 loop_destroy (EV_A);
867 ev_free (loop);
868}
869
870void
871ev_loop_fork (EV_P)
872{
873 postfork = 1;
874}
875
876#endif
877
878#if EV_MULTIPLICITY
879struct ev_loop *
880#else
881int
882#endif
883ev_default_loop (int methods)
884{
885 if (sigpipe [0] == sigpipe [1])
886 if (pipe (sigpipe))
887 return 0;
888
889 if (!default_loop)
890 {
891#if EV_MULTIPLICITY
892 struct ev_loop *loop = default_loop = &default_loop_struct;
893#else
894 default_loop = 1;
895#endif
896
897 loop_init (EV_A_ methods);
898
634 if (method) 899 if (ev_method (EV_A))
635 { 900 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 901 siginit (EV_A);
639 902
640#ifndef WIN32 903#ifndef WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 904 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 905 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 906 ev_signal_start (EV_A_ &childev);
907 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 908#endif
645 } 909 }
910 else
911 default_loop = 0;
646 } 912 }
647 913
648 return method; 914 return default_loop;
915}
916
917void
918ev_default_destroy (void)
919{
920#if EV_MULTIPLICITY
921 struct ev_loop *loop = default_loop;
922#endif
923
924#ifndef WIN32
925 ev_ref (EV_A); /* child watcher */
926 ev_signal_stop (EV_A_ &childev);
927#endif
928
929 ev_ref (EV_A); /* signal watcher */
930 ev_io_stop (EV_A_ &sigev);
931
932 close (sigpipe [0]); sigpipe [0] = 0;
933 close (sigpipe [1]); sigpipe [1] = 0;
934
935 loop_destroy (EV_A);
936}
937
938void
939ev_default_fork (void)
940{
941#if EV_MULTIPLICITY
942 struct ev_loop *loop = default_loop;
943#endif
944
945 if (method)
946 postfork = 1;
649} 947}
650 948
651/*****************************************************************************/ 949/*****************************************************************************/
652 950
653void 951static int
654ev_fork_prepare (void) 952any_pending (EV_P)
655{ 953{
656 /* nop */ 954 int pri;
657}
658 955
659void 956 for (pri = NUMPRI; pri--; )
660ev_fork_parent (void) 957 if (pendingcnt [pri])
661{ 958 return 1;
662 /* nop */
663}
664 959
665void 960 return 0;
666ev_fork_child (void)
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif
672
673 ev_io_stop (&sigev);
674 close (sigpipe [0]);
675 close (sigpipe [1]);
676 pipe (sigpipe);
677 siginit ();
678} 961}
679
680/*****************************************************************************/
681 962
682static void 963static void
683call_pending (EV_P) 964call_pending (EV_P)
684{ 965{
685 int pri; 966 int pri;
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 971 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 972
692 if (p->w) 973 if (p->w)
693 { 974 {
694 p->w->pending = 0; 975 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 976 EV_CB_INVOKE (p->w, p->events);
696 } 977 }
697 } 978 }
698} 979}
699 980
700static void 981static void
701timers_reify (EV_P) 982timers_reify (EV_P)
702{ 983{
703 while (timercnt && timers [0]->at <= mn_now) 984 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 985 {
705 struct ev_timer *w = timers [0]; 986 struct ev_timer *w = timers [0];
987
988 assert (("inactive timer on timer heap detected", ev_is_active (w)));
706 989
707 /* first reschedule or stop timer */ 990 /* first reschedule or stop timer */
708 if (w->repeat) 991 if (w->repeat)
709 { 992 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 993 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
994
711 w->at = mn_now + w->repeat; 995 ((WT)w)->at += w->repeat;
996 if (((WT)w)->at < mn_now)
997 ((WT)w)->at = mn_now;
998
712 downheap ((WT *)timers, timercnt, 0); 999 downheap ((WT *)timers, timercnt, 0);
713 } 1000 }
714 else 1001 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1002 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1003
717 event ((W)w, EV_TIMEOUT); 1004 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1005 }
719} 1006}
720 1007
1008#if EV_PERIODICS
721static void 1009static void
722periodics_reify (EV_P) 1010periodics_reify (EV_P)
723{ 1011{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1012 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1013 {
726 struct ev_periodic *w = periodics [0]; 1014 struct ev_periodic *w = periodics [0];
727 1015
1016 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1017
728 /* first reschedule or stop timer */ 1018 /* first reschedule or stop timer */
729 if (w->interval) 1019 if (w->reschedule_cb)
730 { 1020 {
1021 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1022
1023 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1024 downheap ((WT *)periodics, periodiccnt, 0);
1025 }
1026 else if (w->interval)
1027 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1028 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1029 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0); 1030 downheap ((WT *)periodics, periodiccnt, 0);
734 } 1031 }
735 else 1032 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1033 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1034
738 event (EV_A_ (W)w, EV_PERIODIC); 1035 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1036 }
740} 1037}
741 1038
742static void 1039static void
743periodics_reschedule (EV_P_ ev_tstamp diff) 1040periodics_reschedule (EV_P)
744{ 1041{
745 int i; 1042 int i;
746 1043
747 /* adjust periodics after time jump */ 1044 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1045 for (i = 0; i < periodiccnt; ++i)
749 { 1046 {
750 struct ev_periodic *w = periodics [i]; 1047 struct ev_periodic *w = periodics [i];
751 1048
1049 if (w->reschedule_cb)
1050 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 if (w->interval) 1051 else if (w->interval)
753 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1052 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
755
756 if (fabs (diff) >= 1e-4)
757 {
758 ev_periodic_stop (EV_A_ w);
759 ev_periodic_start (EV_A_ w);
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 }
763 }
764 } 1053 }
1054
1055 /* now rebuild the heap */
1056 for (i = periodiccnt >> 1; i--; )
1057 downheap ((WT *)periodics, periodiccnt, i);
765} 1058}
1059#endif
766 1060
767inline int 1061inline int
768time_update_monotonic (EV_P) 1062time_update_monotonic (EV_P)
769{ 1063{
770 mn_now = get_clock (); 1064 mn_now = get_clock ();
771 1065
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1066 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 { 1067 {
774 rt_now = mn_now + diff; 1068 ev_rt_now = rtmn_diff + mn_now;
775 return 0; 1069 return 0;
776 } 1070 }
777 else 1071 else
778 { 1072 {
779 now_floor = mn_now; 1073 now_floor = mn_now;
780 rt_now = ev_time (); 1074 ev_rt_now = ev_time ();
781 return 1; 1075 return 1;
782 } 1076 }
783} 1077}
784 1078
785static void 1079static void
790#if EV_USE_MONOTONIC 1084#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1085 if (expect_true (have_monotonic))
792 { 1086 {
793 if (time_update_monotonic (EV_A)) 1087 if (time_update_monotonic (EV_A))
794 { 1088 {
795 ev_tstamp odiff = diff; 1089 ev_tstamp odiff = rtmn_diff;
796 1090
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1091 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 { 1092 {
799 diff = rt_now - mn_now; 1093 rtmn_diff = ev_rt_now - mn_now;
800 1094
801 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1095 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802 return; /* all is well */ 1096 return; /* all is well */
803 1097
804 rt_now = ev_time (); 1098 ev_rt_now = ev_time ();
805 mn_now = get_clock (); 1099 mn_now = get_clock ();
806 now_floor = mn_now; 1100 now_floor = mn_now;
807 } 1101 }
808 1102
1103# if EV_PERIODICS
809 periodics_reschedule (EV_A_ diff - odiff); 1104 periodics_reschedule (EV_A);
1105# endif
810 /* no timer adjustment, as the monotonic clock doesn't jump */ 1106 /* no timer adjustment, as the monotonic clock doesn't jump */
1107 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811 } 1108 }
812 } 1109 }
813 else 1110 else
814#endif 1111#endif
815 { 1112 {
816 rt_now = ev_time (); 1113 ev_rt_now = ev_time ();
817 1114
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1115 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819 { 1116 {
1117#if EV_PERIODICS
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1118 periodics_reschedule (EV_A);
1119#endif
821 1120
822 /* adjust timers. this is easy, as the offset is the same for all */ 1121 /* adjust timers. this is easy, as the offset is the same for all */
823 for (i = 0; i < timercnt; ++i) 1122 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1123 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1124 }
826 1125
827 mn_now = rt_now; 1126 mn_now = ev_rt_now;
828 } 1127 }
829} 1128}
830 1129
831void 1130void
832ev_ref (EV_P) 1131ev_ref (EV_P)
855 { 1154 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1155 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1156 call_pending (EV_A);
858 } 1157 }
859 1158
1159 /* we might have forked, so reify kernel state if necessary */
1160 if (expect_false (postfork))
1161 loop_fork (EV_A);
1162
860 /* update fd-related kernel structures */ 1163 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1164 fd_reify (EV_A);
862 1165
863 /* calculate blocking time */ 1166 /* calculate blocking time */
864 1167
865 /* we only need this for !monotonic clockor timers, but as we basically 1168 /* we only need this for !monotonic clock or timers, but as we basically
866 always have timers, we just calculate it always */ 1169 always have timers, we just calculate it always */
867#if EV_USE_MONOTONIC 1170#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic)) 1171 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A); 1172 time_update_monotonic (EV_A);
870 else 1173 else
871#endif 1174#endif
872 { 1175 {
873 rt_now = ev_time (); 1176 ev_rt_now = ev_time ();
874 mn_now = rt_now; 1177 mn_now = ev_rt_now;
875 } 1178 }
876 1179
877 if (flags & EVLOOP_NONBLOCK || idlecnt) 1180 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.; 1181 block = 0.;
879 else 1182 else
880 { 1183 {
881 block = MAX_BLOCKTIME; 1184 block = MAX_BLOCKTIME;
882 1185
883 if (timercnt) 1186 if (timercnt)
884 { 1187 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1188 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
886 if (block > to) block = to; 1189 if (block > to) block = to;
887 } 1190 }
888 1191
1192#if EV_PERIODICS
889 if (periodiccnt) 1193 if (periodiccnt)
890 { 1194 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1195 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
892 if (block > to) block = to; 1196 if (block > to) block = to;
893 } 1197 }
1198#endif
894 1199
895 if (block < 0.) block = 0.; 1200 if (block < 0.) block = 0.;
896 } 1201 }
897 1202
898 method_poll (EV_A_ block); 1203 method_poll (EV_A_ block);
899 1204
900 /* update rt_now, do magic */ 1205 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1206 time_update (EV_A);
902 1207
903 /* queue pending timers and reschedule them */ 1208 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1209 timers_reify (EV_A); /* relative timers called last */
1210#if EV_PERIODICS
905 periodics_reify (EV_A); /* absolute timers called first */ 1211 periodics_reify (EV_A); /* absolute timers called first */
1212#endif
906 1213
907 /* queue idle watchers unless io or timers are pending */ 1214 /* queue idle watchers unless io or timers are pending */
908 if (!pendingcnt) 1215 if (idlecnt && !any_pending (EV_A))
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1216 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
910 1217
911 /* queue check watchers, to be executed first */ 1218 /* queue check watchers, to be executed first */
912 if (checkcnt) 1219 if (checkcnt)
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1220 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1221
915 call_pending (EV_A); 1222 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D
917 } 1223 }
918 while (activecnt && !loop_done); 1224 while (activecnt && !loop_done);
919 1225
920 if (loop_done != 2) 1226 if (loop_done != 2)
921 loop_done = 0; 1227 loop_done = 0;
989 return; 1295 return;
990 1296
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1297 assert (("ev_io_start called with negative fd", fd >= 0));
992 1298
993 ev_start (EV_A_ (W)w, 1); 1299 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1300 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1301 wlist_add ((WL *)&anfds[fd].head, (WL)w);
996 1302
997 fd_change (EV_A_ fd); 1303 fd_change (EV_A_ fd);
998} 1304}
999 1305
1002{ 1308{
1003 ev_clear_pending (EV_A_ (W)w); 1309 ev_clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1310 if (!ev_is_active (w))
1005 return; 1311 return;
1006 1312
1313 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1314
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1315 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1316 ev_stop (EV_A_ (W)w);
1009 1317
1010 fd_change (EV_A_ w->fd); 1318 fd_change (EV_A_ w->fd);
1011} 1319}
1014ev_timer_start (EV_P_ struct ev_timer *w) 1322ev_timer_start (EV_P_ struct ev_timer *w)
1015{ 1323{
1016 if (ev_is_active (w)) 1324 if (ev_is_active (w))
1017 return; 1325 return;
1018 1326
1019 w->at += mn_now; 1327 ((WT)w)->at += mn_now;
1020 1328
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1329 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1330
1023 ev_start (EV_A_ (W)w, ++timercnt); 1331 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1332 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1025 timers [timercnt - 1] = w; 1333 timers [timercnt - 1] = w;
1026 upheap ((WT *)timers, timercnt - 1); 1334 upheap ((WT *)timers, timercnt - 1);
1335
1336 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1027} 1337}
1028 1338
1029void 1339void
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1340ev_timer_stop (EV_P_ struct ev_timer *w)
1031{ 1341{
1032 ev_clear_pending (EV_A_ (W)w); 1342 ev_clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1343 if (!ev_is_active (w))
1034 return; 1344 return;
1035 1345
1346 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1347
1036 if (w->active < timercnt--) 1348 if (((W)w)->active < timercnt--)
1037 { 1349 {
1038 timers [w->active - 1] = timers [timercnt]; 1350 timers [((W)w)->active - 1] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1351 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1040 } 1352 }
1041 1353
1042 w->at = w->repeat; 1354 ((WT)w)->at -= mn_now;
1043 1355
1044 ev_stop (EV_A_ (W)w); 1356 ev_stop (EV_A_ (W)w);
1045} 1357}
1046 1358
1047void 1359void
1048ev_timer_again (EV_P_ struct ev_timer *w) 1360ev_timer_again (EV_P_ struct ev_timer *w)
1049{ 1361{
1050 if (ev_is_active (w)) 1362 if (ev_is_active (w))
1051 { 1363 {
1052 if (w->repeat) 1364 if (w->repeat)
1053 {
1054 w->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1365 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1056 }
1057 else 1366 else
1058 ev_timer_stop (EV_A_ w); 1367 ev_timer_stop (EV_A_ w);
1059 } 1368 }
1060 else if (w->repeat) 1369 else if (w->repeat)
1061 ev_timer_start (EV_A_ w); 1370 ev_timer_start (EV_A_ w);
1062} 1371}
1063 1372
1373#if EV_PERIODICS
1064void 1374void
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1375ev_periodic_start (EV_P_ struct ev_periodic *w)
1066{ 1376{
1067 if (ev_is_active (w)) 1377 if (ev_is_active (w))
1068 return; 1378 return;
1069 1379
1380 if (w->reschedule_cb)
1381 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1382 else if (w->interval)
1383 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1384 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072 /* this formula differs from the one in periodic_reify because we do not always round up */ 1385 /* this formula differs from the one in periodic_reify because we do not always round up */
1073 if (w->interval)
1074 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1386 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1387 }
1075 1388
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1389 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1390 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1078 periodics [periodiccnt - 1] = w; 1391 periodics [periodiccnt - 1] = w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1392 upheap ((WT *)periodics, periodiccnt - 1);
1393
1394 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1080} 1395}
1081 1396
1082void 1397void
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1398ev_periodic_stop (EV_P_ struct ev_periodic *w)
1084{ 1399{
1085 ev_clear_pending (EV_A_ (W)w); 1400 ev_clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1401 if (!ev_is_active (w))
1087 return; 1402 return;
1088 1403
1404 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1405
1089 if (w->active < periodiccnt--) 1406 if (((W)w)->active < periodiccnt--)
1090 { 1407 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1408 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1409 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1093 } 1410 }
1094 1411
1412 ev_stop (EV_A_ (W)w);
1413}
1414
1415void
1416ev_periodic_again (EV_P_ struct ev_periodic *w)
1417{
1418 /* TODO: use adjustheap and recalculation */
1419 ev_periodic_stop (EV_A_ w);
1420 ev_periodic_start (EV_A_ w);
1421}
1422#endif
1423
1424void
1425ev_idle_start (EV_P_ struct ev_idle *w)
1426{
1427 if (ev_is_active (w))
1428 return;
1429
1430 ev_start (EV_A_ (W)w, ++idlecnt);
1431 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1432 idles [idlecnt - 1] = w;
1433}
1434
1435void
1436ev_idle_stop (EV_P_ struct ev_idle *w)
1437{
1438 ev_clear_pending (EV_A_ (W)w);
1439 if (ev_is_active (w))
1440 return;
1441
1442 idles [((W)w)->active - 1] = idles [--idlecnt];
1443 ev_stop (EV_A_ (W)w);
1444}
1445
1446void
1447ev_prepare_start (EV_P_ struct ev_prepare *w)
1448{
1449 if (ev_is_active (w))
1450 return;
1451
1452 ev_start (EV_A_ (W)w, ++preparecnt);
1453 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1454 prepares [preparecnt - 1] = w;
1455}
1456
1457void
1458ev_prepare_stop (EV_P_ struct ev_prepare *w)
1459{
1460 ev_clear_pending (EV_A_ (W)w);
1461 if (ev_is_active (w))
1462 return;
1463
1464 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1465 ev_stop (EV_A_ (W)w);
1466}
1467
1468void
1469ev_check_start (EV_P_ struct ev_check *w)
1470{
1471 if (ev_is_active (w))
1472 return;
1473
1474 ev_start (EV_A_ (W)w, ++checkcnt);
1475 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1476 checks [checkcnt - 1] = w;
1477}
1478
1479void
1480ev_check_stop (EV_P_ struct ev_check *w)
1481{
1482 ev_clear_pending (EV_A_ (W)w);
1483 if (!ev_is_active (w))
1484 return;
1485
1486 checks [((W)w)->active - 1] = checks [--checkcnt];
1095 ev_stop (EV_A_ (W)w); 1487 ev_stop (EV_A_ (W)w);
1096} 1488}
1097 1489
1098#ifndef SA_RESTART 1490#ifndef SA_RESTART
1099# define SA_RESTART 0 1491# define SA_RESTART 0
1100#endif 1492#endif
1101 1493
1102void 1494void
1103ev_signal_start (EV_P_ struct ev_signal *w) 1495ev_signal_start (EV_P_ struct ev_signal *w)
1104{ 1496{
1497#if EV_MULTIPLICITY
1498 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1499#endif
1105 if (ev_is_active (w)) 1500 if (ev_is_active (w))
1106 return; 1501 return;
1107 1502
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1503 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 1504
1110 ev_start (EV_A_ (W)w, 1); 1505 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init); 1506 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1507 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113 1508
1114 if (!w->next) 1509 if (!((WL)w)->next)
1115 { 1510 {
1511#if WIN32
1512 signal (w->signum, sighandler);
1513#else
1116 struct sigaction sa; 1514 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1515 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1516 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1517 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1518 sigaction (w->signum, &sa, 0);
1519#endif
1121 } 1520 }
1122} 1521}
1123 1522
1124void 1523void
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1524ev_signal_stop (EV_P_ struct ev_signal *w)
1134 if (!signals [w->signum - 1].head) 1533 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1534 signal (w->signum, SIG_DFL);
1136} 1535}
1137 1536
1138void 1537void
1139ev_idle_start (EV_P_ struct ev_idle *w)
1140{
1141 if (ev_is_active (w))
1142 return;
1143
1144 ev_start (EV_A_ (W)w, ++idlecnt);
1145 array_needsize (idles, idlemax, idlecnt, );
1146 idles [idlecnt - 1] = w;
1147}
1148
1149void
1150ev_idle_stop (EV_P_ struct ev_idle *w)
1151{
1152 ev_clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w))
1154 return;
1155
1156 idles [w->active - 1] = idles [--idlecnt];
1157 ev_stop (EV_A_ (W)w);
1158}
1159
1160void
1161ev_prepare_start (EV_P_ struct ev_prepare *w)
1162{
1163 if (ev_is_active (w))
1164 return;
1165
1166 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, );
1168 prepares [preparecnt - 1] = w;
1169}
1170
1171void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w)
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w))
1176 return;
1177
1178 prepares [w->active - 1] = prepares [--preparecnt];
1179 ev_stop (EV_A_ (W)w);
1180}
1181
1182void
1183ev_check_start (EV_P_ struct ev_check *w)
1184{
1185 if (ev_is_active (w))
1186 return;
1187
1188 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, );
1190 checks [checkcnt - 1] = w;
1191}
1192
1193void
1194ev_check_stop (EV_P_ struct ev_check *w)
1195{
1196 ev_clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w))
1198 return;
1199
1200 checks [w->active - 1] = checks [--checkcnt];
1201 ev_stop (EV_A_ (W)w);
1202}
1203
1204void
1205ev_child_start (EV_P_ struct ev_child *w) 1538ev_child_start (EV_P_ struct ev_child *w)
1206{ 1539{
1540#if EV_MULTIPLICITY
1541 assert (("child watchers are only supported in the default loop", loop == default_loop));
1542#endif
1207 if (ev_is_active (w)) 1543 if (ev_is_active (w))
1208 return; 1544 return;
1209 1545
1210 ev_start (EV_A_ (W)w, 1); 1546 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1547 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213 1549
1214void 1550void
1215ev_child_stop (EV_P_ struct ev_child *w) 1551ev_child_stop (EV_P_ struct ev_child *w)
1216{ 1552{
1217 ev_clear_pending (EV_A_ (W)w); 1553 ev_clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 1554 if (!ev_is_active (w))
1219 return; 1555 return;
1220 1556
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1557 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1222 ev_stop (EV_A_ (W)w); 1558 ev_stop (EV_A_ (W)w);
1223} 1559}
1238 void (*cb)(int revents, void *arg) = once->cb; 1574 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 1575 void *arg = once->arg;
1240 1576
1241 ev_io_stop (EV_A_ &once->io); 1577 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 1578 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 1579 ev_free (once);
1244 1580
1245 cb (revents, arg); 1581 cb (revents, arg);
1246} 1582}
1247 1583
1248static void 1584static void
1258} 1594}
1259 1595
1260void 1596void
1261ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1597ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262{ 1598{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 1599 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 1600
1265 if (!once) 1601 if (!once)
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1602 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 1603 else
1268 { 1604 {
1269 once->cb = cb; 1605 once->cb = cb;
1270 once->arg = arg; 1606 once->arg = arg;
1271 1607
1272 ev_watcher_init (&once->io, once_cb_io); 1608 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 1609 if (fd >= 0)
1274 { 1610 {
1275 ev_io_set (&once->io, fd, events); 1611 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 1612 ev_io_start (EV_A_ &once->io);
1277 } 1613 }
1278 1614
1279 ev_watcher_init (&once->to, once_cb_to); 1615 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 1616 if (timeout >= 0.)
1281 { 1617 {
1282 ev_timer_set (&once->to, timeout, 0.); 1618 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 1619 ev_timer_start (EV_A_ &once->to);
1284 } 1620 }
1285 } 1621 }
1286} 1622}
1287 1623
1288/*****************************************************************************/ 1624#ifdef __cplusplus
1289
1290#if 0
1291
1292struct ev_io wio;
1293
1294static void
1295sin_cb (struct ev_io *w, int revents)
1296{
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298} 1625}
1299
1300static void
1301ocb (struct ev_timer *w, int revents)
1302{
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304 ev_timer_stop (w);
1305 ev_timer_start (w);
1306}
1307
1308static void
1309scb (struct ev_signal *w, int revents)
1310{
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315
1316static void
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i)
1335 {
1336 struct ev_timer *w = t + i;
1337 ev_watcher_init (w, ocb, i);
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339 ev_timer_start (w);
1340 if (drand48 () < 0.5)
1341 ev_timer_stop (w);
1342 }
1343#endif 1626#endif
1344 1627
1345 struct ev_timer t1;
1346 ev_timer_init (&t1, ocb, 5, 10);
1347 ev_timer_start (&t1);
1348
1349 struct ev_signal sig;
1350 ev_signal_init (&sig, scb, SIGQUIT);
1351 ev_signal_start (&sig);
1352
1353 struct ev_check cw;
1354 ev_check_init (&cw, gcb);
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364}
1365
1366#endif
1367
1368
1369
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