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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 1.103 by root, Mon Nov 12 00:31:08 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# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1
42# endif
43# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1
45# endif
46# endif
47
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
49# define EV_USE_SELECT 1
50# endif
51
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
53# define EV_USE_POLL 1
54# endif
55
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
57# define EV_USE_EPOLL 1
58# endif
59
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
61# define EV_USE_KQUEUE 1
62# endif
63
33#endif 64#endif
34 65
35#include <math.h> 66#include <math.h>
36#include <stdlib.h> 67#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 68#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 69#include <stddef.h>
41 70
42#include <stdio.h> 71#include <stdio.h>
43 72
44#include <assert.h> 73#include <assert.h>
45#include <errno.h> 74#include <errno.h>
46#include <sys/types.h> 75#include <sys/types.h>
76#include <time.h>
77
78#include <signal.h>
79
47#ifndef WIN32 80#ifndef _WIN32
81# include <unistd.h>
82# include <sys/time.h>
48# include <sys/wait.h> 83# include <sys/wait.h>
84#else
85# define WIN32_LEAN_AND_MEAN
86# include <windows.h>
87# ifndef EV_SELECT_IS_WINSOCKET
88# define EV_SELECT_IS_WINSOCKET 1
49#endif 89# endif
50#include <sys/time.h> 90#endif
51#include <time.h>
52 91
53/**/ 92/**/
54 93
55#ifndef EV_USE_MONOTONIC 94#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 95# define EV_USE_MONOTONIC 1
58 97
59#ifndef EV_USE_SELECT 98#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 99# define EV_USE_SELECT 1
61#endif 100#endif
62 101
63#ifndef EV_USEV_POLL 102#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 103# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65#endif 104#endif
66 105
67#ifndef EV_USE_EPOLL 106#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 107# define EV_USE_EPOLL 0
69#endif 108#endif
84#endif 123#endif
85 124
86#ifndef CLOCK_REALTIME 125#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 126# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 127# define EV_USE_REALTIME 0
128#endif
129
130#if EV_SELECT_IS_WINSOCKET
131# include <winsock.h>
89#endif 132#endif
90 133
91/**/ 134/**/
92 135
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 136#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) */ 137#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 */ 138#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 */ 139/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
97 140
141#ifdef EV_H
142# include EV_H
143#else
98#include "ev.h" 144# include "ev.h"
145#endif
99 146
100#if __GNUC__ >= 3 147#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value)) 148# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 149# define inline inline
103#else 150#else
109#define expect_true(expr) expect ((expr) != 0, 1) 156#define expect_true(expr) expect ((expr) != 0, 1)
110 157
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 158#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 159#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113 160
161#define EMPTY /* required for microsofts broken pseudo-c compiler */
162
114typedef struct ev_watcher *W; 163typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 164typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 165typedef struct ev_watcher_time *WT;
117 166
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 167static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 168
122static int have_monotonic; /* runtime */ 169#ifdef _WIN32
123 170# include "ev_win32.c"
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 171#endif
156 172
157/*****************************************************************************/ 173/*****************************************************************************/
158 174
159inline ev_tstamp 175static void (*syserr_cb)(const char *msg);
176
177void ev_set_syserr_cb (void (*cb)(const char *msg))
178{
179 syserr_cb = cb;
180}
181
182static void
183syserr (const char *msg)
184{
185 if (!msg)
186 msg = "(libev) system error";
187
188 if (syserr_cb)
189 syserr_cb (msg);
190 else
191 {
192 perror (msg);
193 abort ();
194 }
195}
196
197static void *(*alloc)(void *ptr, long size);
198
199void ev_set_allocator (void *(*cb)(void *ptr, long size))
200{
201 alloc = cb;
202}
203
204static void *
205ev_realloc (void *ptr, long size)
206{
207 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
208
209 if (!ptr && size)
210 {
211 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
212 abort ();
213 }
214
215 return ptr;
216}
217
218#define ev_malloc(size) ev_realloc (0, (size))
219#define ev_free(ptr) ev_realloc ((ptr), 0)
220
221/*****************************************************************************/
222
223typedef struct
224{
225 WL head;
226 unsigned char events;
227 unsigned char reify;
228#if EV_SELECT_IS_WINSOCKET
229 SOCKET handle;
230#endif
231} ANFD;
232
233typedef struct
234{
235 W w;
236 int events;
237} ANPENDING;
238
239#if EV_MULTIPLICITY
240
241 struct ev_loop
242 {
243 ev_tstamp ev_rt_now;
244 #define ev_rt_now ((loop)->ev_rt_now)
245 #define VAR(name,decl) decl;
246 #include "ev_vars.h"
247 #undef VAR
248 };
249 #include "ev_wrap.h"
250
251 struct ev_loop default_loop_struct;
252 static struct ev_loop *default_loop;
253
254#else
255
256 ev_tstamp ev_rt_now;
257 #define VAR(name,decl) static decl;
258 #include "ev_vars.h"
259 #undef VAR
260
261 static int default_loop;
262
263#endif
264
265/*****************************************************************************/
266
267ev_tstamp
160ev_time (void) 268ev_time (void)
161{ 269{
162#if EV_USE_REALTIME 270#if EV_USE_REALTIME
163 struct timespec ts; 271 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 272 clock_gettime (CLOCK_REALTIME, &ts);
183#endif 291#endif
184 292
185 return ev_time (); 293 return ev_time ();
186} 294}
187 295
296#if EV_MULTIPLICITY
188ev_tstamp 297ev_tstamp
189ev_now (EV_P) 298ev_now (EV_P)
190{ 299{
191 return rt_now; 300 return ev_rt_now;
192} 301}
302#endif
193 303
194#define array_roundsize(base,n) ((n) | 4 & ~3) 304#define array_roundsize(type,n) ((n) | 4 & ~3)
195 305
196#define array_needsize(base,cur,cnt,init) \ 306#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 307 if (expect_false ((cnt) > cur)) \
198 { \ 308 { \
199 int newcnt = cur; \ 309 int newcnt = cur; \
200 do \ 310 do \
201 { \ 311 { \
202 newcnt = array_roundsize (base, newcnt << 1); \ 312 newcnt = array_roundsize (type, newcnt << 1); \
203 } \ 313 } \
204 while ((cnt) > newcnt); \ 314 while ((cnt) > newcnt); \
205 \ 315 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 316 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207 init (base + cur, newcnt - cur); \ 317 init (base + cur, newcnt - cur); \
208 cur = newcnt; \ 318 cur = newcnt; \
209 } 319 }
320
321#define array_slim(type,stem) \
322 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
323 { \
324 stem ## max = array_roundsize (stem ## cnt >> 1); \
325 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
326 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
327 }
328
329#define array_free(stem, idx) \
330 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210 331
211/*****************************************************************************/ 332/*****************************************************************************/
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;
222 333
223static void 334static void
224anfds_init (ANFD *base, int count) 335anfds_init (ANFD *base, int count)
225{ 336{
226 while (count--) 337 while (count--)
231 342
232 ++base; 343 ++base;
233 } 344 }
234} 345}
235 346
236typedef struct 347void
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) 348ev_feed_event (EV_P_ void *w, int revents)
247{ 349{
350 W w_ = (W)w;
351
248 if (w->pending) 352 if (w_->pending)
249 { 353 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events; 354 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251 return; 355 return;
252 } 356 }
253 357
254 w->pending = ++pendingcnt [ABSPRI (w)]; 358 w_->pending = ++pendingcnt [ABSPRI (w_)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 359 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
256 pendings [ABSPRI (w)][w->pending - 1].w = w; 360 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257 pendings [ABSPRI (w)][w->pending - 1].events = events; 361 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258} 362}
259 363
260static void 364static void
261queue_events (EV_P_ W *events, int eventcnt, int type) 365queue_events (EV_P_ W *events, int eventcnt, int type)
262{ 366{
263 int i; 367 int i;
264 368
265 for (i = 0; i < eventcnt; ++i) 369 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type); 370 ev_feed_event (EV_A_ events [i], type);
267} 371}
268 372
269static void 373inline void
270fd_event (EV_P_ int fd, int events) 374fd_event (EV_P_ int fd, int revents)
271{ 375{
272 ANFD *anfd = anfds + fd; 376 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 377 struct ev_io *w;
274 378
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 379 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
276 { 380 {
277 int ev = w->events & events; 381 int ev = w->events & revents;
278 382
279 if (ev) 383 if (ev)
280 event (EV_A_ (W)w, ev); 384 ev_feed_event (EV_A_ (W)w, ev);
281 } 385 }
386}
387
388void
389ev_feed_fd_event (EV_P_ int fd, int revents)
390{
391 fd_event (EV_A_ fd, revents);
282} 392}
283 393
284/*****************************************************************************/ 394/*****************************************************************************/
285
286static int *fdchanges;
287static int fdchangemax, fdchangecnt;
288 395
289static void 396static void
290fd_reify (EV_P) 397fd_reify (EV_P)
291{ 398{
292 int i; 399 int i;
300 int events = 0; 407 int events = 0;
301 408
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 409 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303 events |= w->events; 410 events |= w->events;
304 411
412#if EV_SELECT_IS_WINSOCKET
413 if (events)
414 {
415 unsigned long argp;
416 anfd->handle = _get_osfhandle (fd);
417 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
418 }
419#endif
420
305 anfd->reify = 0; 421 anfd->reify = 0;
306 422
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 423 method_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 424 anfd->events = events;
311 }
312 } 425 }
313 426
314 fdchangecnt = 0; 427 fdchangecnt = 0;
315} 428}
316 429
317static void 430static void
318fd_change (EV_P_ int fd) 431fd_change (EV_P_ int fd)
319{ 432{
320 if (anfds [fd].reify || fdchangecnt < 0) 433 if (anfds [fd].reify)
321 return; 434 return;
322 435
323 anfds [fd].reify = 1; 436 anfds [fd].reify = 1;
324 437
325 ++fdchangecnt; 438 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 439 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327 fdchanges [fdchangecnt - 1] = fd; 440 fdchanges [fdchangecnt - 1] = fd;
328} 441}
329 442
330static void 443static void
331fd_kill (EV_P_ int fd) 444fd_kill (EV_P_ int fd)
333 struct ev_io *w; 446 struct ev_io *w;
334 447
335 while ((w = (struct ev_io *)anfds [fd].head)) 448 while ((w = (struct ev_io *)anfds [fd].head))
336 { 449 {
337 ev_io_stop (EV_A_ w); 450 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 451 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 452 }
453}
454
455static int
456fd_valid (int fd)
457{
458#ifdef _WIN32
459 return _get_osfhandle (fd) != -1;
460#else
461 return fcntl (fd, F_GETFD) != -1;
462#endif
340} 463}
341 464
342/* called on EBADF to verify fds */ 465/* called on EBADF to verify fds */
343static void 466static void
344fd_ebadf (EV_P) 467fd_ebadf (EV_P)
345{ 468{
346 int fd; 469 int fd;
347 470
348 for (fd = 0; fd < anfdmax; ++fd) 471 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 472 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 473 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 474 fd_kill (EV_A_ fd);
352} 475}
353 476
354/* called on ENOMEM in select/poll to kill some fds and retry */ 477/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 478static void
356fd_enomem (EV_P) 479fd_enomem (EV_P)
357{ 480{
358 int fd = anfdmax; 481 int fd;
359 482
360 while (fd--) 483 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 484 if (anfds [fd].events)
362 { 485 {
363 close (fd);
364 fd_kill (EV_A_ fd); 486 fd_kill (EV_A_ fd);
365 return; 487 return;
366 } 488 }
367} 489}
368 490
491/* usually called after fork if method needs to re-arm all fds from scratch */
492static void
493fd_rearm_all (EV_P)
494{
495 int fd;
496
497 /* this should be highly optimised to not do anything but set a flag */
498 for (fd = 0; fd < anfdmax; ++fd)
499 if (anfds [fd].events)
500 {
501 anfds [fd].events = 0;
502 fd_change (EV_A_ fd);
503 }
504}
505
369/*****************************************************************************/ 506/*****************************************************************************/
370 507
371static struct ev_timer **timers;
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void 508static void
378upheap (WT *timers, int k) 509upheap (WT *heap, int k)
379{ 510{
380 WT w = timers [k]; 511 WT w = heap [k];
381 512
382 while (k && timers [k >> 1]->at > w->at) 513 while (k && heap [k >> 1]->at > w->at)
383 { 514 {
384 timers [k] = timers [k >> 1]; 515 heap [k] = heap [k >> 1];
385 timers [k]->active = k + 1; 516 ((W)heap [k])->active = k + 1;
386 k >>= 1; 517 k >>= 1;
387 } 518 }
388 519
389 timers [k] = w; 520 heap [k] = w;
390 timers [k]->active = k + 1; 521 ((W)heap [k])->active = k + 1;
391 522
392} 523}
393 524
394static void 525static void
395downheap (WT *timers, int N, int k) 526downheap (WT *heap, int N, int k)
396{ 527{
397 WT w = timers [k]; 528 WT w = heap [k];
398 529
399 while (k < (N >> 1)) 530 while (k < (N >> 1))
400 { 531 {
401 int j = k << 1; 532 int j = k << 1;
402 533
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 534 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404 ++j; 535 ++j;
405 536
406 if (w->at <= timers [j]->at) 537 if (w->at <= heap [j]->at)
407 break; 538 break;
408 539
409 timers [k] = timers [j]; 540 heap [k] = heap [j];
410 timers [k]->active = k + 1; 541 ((W)heap [k])->active = k + 1;
411 k = j; 542 k = j;
412 } 543 }
413 544
414 timers [k] = w; 545 heap [k] = w;
415 timers [k]->active = k + 1; 546 ((W)heap [k])->active = k + 1;
547}
548
549inline void
550adjustheap (WT *heap, int N, int k)
551{
552 upheap (heap, k);
553 downheap (heap, N, k);
416} 554}
417 555
418/*****************************************************************************/ 556/*****************************************************************************/
419 557
420typedef struct 558typedef struct
421{ 559{
422 struct ev_watcher_list *head; 560 WL head;
423 sig_atomic_t volatile gotsig; 561 sig_atomic_t volatile gotsig;
424} ANSIG; 562} ANSIG;
425 563
426static ANSIG *signals; 564static ANSIG *signals;
427static int signalmax; 565static int signalmax;
443} 581}
444 582
445static void 583static void
446sighandler (int signum) 584sighandler (int signum)
447{ 585{
586#if _WIN32
587 signal (signum, sighandler);
588#endif
589
448 signals [signum - 1].gotsig = 1; 590 signals [signum - 1].gotsig = 1;
449 591
450 if (!gotsig) 592 if (!gotsig)
451 { 593 {
452 int old_errno = errno; 594 int old_errno = errno;
454 write (sigpipe [1], &signum, 1); 596 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 597 errno = old_errno;
456 } 598 }
457} 599}
458 600
601void
602ev_feed_signal_event (EV_P_ int signum)
603{
604 WL w;
605
606#if EV_MULTIPLICITY
607 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
608#endif
609
610 --signum;
611
612 if (signum < 0 || signum >= signalmax)
613 return;
614
615 signals [signum].gotsig = 0;
616
617 for (w = signals [signum].head; w; w = w->next)
618 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
619}
620
459static void 621static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 622sigcb (EV_P_ struct ev_io *iow, int revents)
461{ 623{
462 struct ev_watcher_list *w;
463 int signum; 624 int signum;
464 625
465 read (sigpipe [0], &revents, 1); 626 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 627 gotsig = 0;
467 628
468 for (signum = signalmax; signum--; ) 629 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 630 if (signals [signum].gotsig)
470 { 631 ev_feed_signal_event (EV_A_ signum + 1);
471 signals [signum].gotsig = 0; 632}
472 633
473 for (w = signals [signum].head; w; w = w->next) 634inline void
474 event (EV_A_ (W)w, EV_SIGNAL); 635fd_intern (int fd)
475 } 636{
637#ifdef _WIN32
638 int arg = 1;
639 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
640#else
641 fcntl (fd, F_SETFD, FD_CLOEXEC);
642 fcntl (fd, F_SETFL, O_NONBLOCK);
643#endif
476} 644}
477 645
478static void 646static void
479siginit (EV_P) 647siginit (EV_P)
480{ 648{
481#ifndef WIN32 649 fd_intern (sigpipe [0]);
482 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 650 fd_intern (sigpipe [1]);
483 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485 /* rather than sort out wether we really need nb, set it */
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif
489 651
490 ev_io_set (&sigev, sigpipe [0], EV_READ); 652 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev); 653 ev_io_start (EV_A_ &sigev);
654 ev_unref (EV_A); /* child watcher should not keep loop alive */
492} 655}
493 656
494/*****************************************************************************/ 657/*****************************************************************************/
495 658
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]; 659static struct ev_child *childs [PID_HASHSIZE];
660
661#ifndef _WIN32
662
508static struct ev_signal childev; 663static struct ev_signal childev;
509
510#ifndef WIN32
511 664
512#ifndef WCONTINUED 665#ifndef WCONTINUED
513# define WCONTINUED 0 666# define WCONTINUED 0
514#endif 667#endif
515 668
519 struct ev_child *w; 672 struct ev_child *w;
520 673
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 674 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) 675 if (w->pid == pid || !w->pid)
523 { 676 {
524 w->priority = sw->priority; /* need to do it *now* */ 677 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525 w->rpid = pid; 678 w->rpid = pid;
526 w->rstatus = status; 679 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD); 680 ev_feed_event (EV_A_ (W)w, EV_CHILD);
528 } 681 }
529} 682}
530 683
531static void 684static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 685childcb (EV_P_ struct ev_signal *sw, int revents)
534 int pid, status; 687 int pid, status;
535 688
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 689 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 690 {
538 /* make sure we are called again until all childs have been reaped */ 691 /* make sure we are called again until all childs have been reaped */
539 event (EV_A_ (W)sw, EV_SIGNAL); 692 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 693
541 child_reap (EV_A_ sw, pid, pid, status); 694 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 */ 695 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
543 } 696 }
544} 697}
551# include "ev_kqueue.c" 704# include "ev_kqueue.c"
552#endif 705#endif
553#if EV_USE_EPOLL 706#if EV_USE_EPOLL
554# include "ev_epoll.c" 707# include "ev_epoll.c"
555#endif 708#endif
556#if EV_USEV_POLL 709#if EV_USE_POLL
557# include "ev_poll.c" 710# include "ev_poll.c"
558#endif 711#endif
559#if EV_USE_SELECT 712#if EV_USE_SELECT
560# include "ev_select.c" 713# include "ev_select.c"
561#endif 714#endif
574 727
575/* return true if we are running with elevated privileges and should ignore env variables */ 728/* return true if we are running with elevated privileges and should ignore env variables */
576static int 729static int
577enable_secure (void) 730enable_secure (void)
578{ 731{
579#ifdef WIN32 732#ifdef _WIN32
580 return 0; 733 return 0;
581#else 734#else
582 return getuid () != geteuid () 735 return getuid () != geteuid ()
583 || getgid () != getegid (); 736 || getgid () != getegid ();
584#endif 737#endif
588ev_method (EV_P) 741ev_method (EV_P)
589{ 742{
590 return method; 743 return method;
591} 744}
592 745
593int 746static void
594ev_init (EV_P_ int methods) 747loop_init (EV_P_ int methods)
595{ 748{
596 if (!method) 749 if (!method)
597 { 750 {
598#if EV_USE_MONOTONIC 751#if EV_USE_MONOTONIC
599 { 752 {
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 754 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 755 have_monotonic = 1;
603 } 756 }
604#endif 757#endif
605 758
606 rt_now = ev_time (); 759 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 760 mn_now = get_clock ();
608 now_floor = mn_now; 761 now_floor = mn_now;
609 diff = rt_now - mn_now; 762 rtmn_diff = ev_rt_now - mn_now;
610
611 if (pipe (sigpipe))
612 return 0;
613 763
614 if (methods == EVMETHOD_AUTO) 764 if (methods == EVMETHOD_AUTO)
615 if (!enable_secure () && getenv ("LIBmethodS")) 765 if (!enable_secure () && getenv ("LIBEV_METHODS"))
616 methods = atoi (getenv ("LIBmethodS")); 766 methods = atoi (getenv ("LIBEV_METHODS"));
617 else 767 else
618 methods = EVMETHOD_ANY; 768 methods = EVMETHOD_ANY;
619 769
620 method = 0; 770 method = 0;
621#if EV_USE_KQUEUE 771#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 772 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623#endif 773#endif
624#if EV_USE_EPOLL 774#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 775 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
626#endif 776#endif
627#if EV_USEV_POLL 777#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 778 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629#endif 779#endif
630#if EV_USE_SELECT 780#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 781 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632#endif 782#endif
633 783
784 ev_init (&sigev, sigcb);
785 ev_set_priority (&sigev, EV_MAXPRI);
786 }
787}
788
789void
790loop_destroy (EV_P)
791{
792 int i;
793
794#if EV_USE_KQUEUE
795 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
796#endif
797#if EV_USE_EPOLL
798 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
799#endif
800#if EV_USE_POLL
801 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
802#endif
803#if EV_USE_SELECT
804 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
805#endif
806
807 for (i = NUMPRI; i--; )
808 array_free (pending, [i]);
809
810 /* have to use the microsoft-never-gets-it-right macro */
811 array_free (fdchange, EMPTY);
812 array_free (timer, EMPTY);
813#if EV_PERIODICS
814 array_free (periodic, EMPTY);
815#endif
816 array_free (idle, EMPTY);
817 array_free (prepare, EMPTY);
818 array_free (check, EMPTY);
819
820 method = 0;
821}
822
823static void
824loop_fork (EV_P)
825{
826#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
828#endif
829#if EV_USE_KQUEUE
830 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
831#endif
832
833 if (ev_is_active (&sigev))
834 {
835 /* default loop */
836
837 ev_ref (EV_A);
838 ev_io_stop (EV_A_ &sigev);
839 close (sigpipe [0]);
840 close (sigpipe [1]);
841
842 while (pipe (sigpipe))
843 syserr ("(libev) error creating pipe");
844
845 siginit (EV_A);
846 }
847
848 postfork = 0;
849}
850
851#if EV_MULTIPLICITY
852struct ev_loop *
853ev_loop_new (int methods)
854{
855 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
856
857 memset (loop, 0, sizeof (struct ev_loop));
858
859 loop_init (EV_A_ methods);
860
861 if (ev_method (EV_A))
862 return loop;
863
864 return 0;
865}
866
867void
868ev_loop_destroy (EV_P)
869{
870 loop_destroy (EV_A);
871 ev_free (loop);
872}
873
874void
875ev_loop_fork (EV_P)
876{
877 postfork = 1;
878}
879
880#endif
881
882#if EV_MULTIPLICITY
883struct ev_loop *
884#else
885int
886#endif
887ev_default_loop (int methods)
888{
889 if (sigpipe [0] == sigpipe [1])
890 if (pipe (sigpipe))
891 return 0;
892
893 if (!default_loop)
894 {
895#if EV_MULTIPLICITY
896 struct ev_loop *loop = default_loop = &default_loop_struct;
897#else
898 default_loop = 1;
899#endif
900
901 loop_init (EV_A_ methods);
902
634 if (method) 903 if (ev_method (EV_A))
635 { 904 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 905 siginit (EV_A);
639 906
640#ifndef WIN32 907#ifndef _WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 908 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 909 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 910 ev_signal_start (EV_A_ &childev);
911 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 912#endif
645 } 913 }
914 else
915 default_loop = 0;
646 } 916 }
647 917
648 return method; 918 return default_loop;
919}
920
921void
922ev_default_destroy (void)
923{
924#if EV_MULTIPLICITY
925 struct ev_loop *loop = default_loop;
926#endif
927
928#ifndef _WIN32
929 ev_ref (EV_A); /* child watcher */
930 ev_signal_stop (EV_A_ &childev);
931#endif
932
933 ev_ref (EV_A); /* signal watcher */
934 ev_io_stop (EV_A_ &sigev);
935
936 close (sigpipe [0]); sigpipe [0] = 0;
937 close (sigpipe [1]); sigpipe [1] = 0;
938
939 loop_destroy (EV_A);
940}
941
942void
943ev_default_fork (void)
944{
945#if EV_MULTIPLICITY
946 struct ev_loop *loop = default_loop;
947#endif
948
949 if (method)
950 postfork = 1;
649} 951}
650 952
651/*****************************************************************************/ 953/*****************************************************************************/
652 954
653void 955static int
654ev_fork_prepare (void) 956any_pending (EV_P)
655{ 957{
656 /* nop */ 958 int pri;
657}
658 959
659void 960 for (pri = NUMPRI; pri--; )
660ev_fork_parent (void) 961 if (pendingcnt [pri])
661{ 962 return 1;
662 /* nop */
663}
664 963
665void 964 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} 965}
679
680/*****************************************************************************/
681 966
682static void 967static void
683call_pending (EV_P) 968call_pending (EV_P)
684{ 969{
685 int pri; 970 int pri;
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 975 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 976
692 if (p->w) 977 if (p->w)
693 { 978 {
694 p->w->pending = 0; 979 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 980 EV_CB_INVOKE (p->w, p->events);
696 } 981 }
697 } 982 }
698} 983}
699 984
700static void 985static void
701timers_reify (EV_P) 986timers_reify (EV_P)
702{ 987{
703 while (timercnt && timers [0]->at <= mn_now) 988 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 989 {
705 struct ev_timer *w = timers [0]; 990 struct ev_timer *w = timers [0];
991
992 assert (("inactive timer on timer heap detected", ev_is_active (w)));
706 993
707 /* first reschedule or stop timer */ 994 /* first reschedule or stop timer */
708 if (w->repeat) 995 if (w->repeat)
709 { 996 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 997 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
998
711 w->at = mn_now + w->repeat; 999 ((WT)w)->at += w->repeat;
1000 if (((WT)w)->at < mn_now)
1001 ((WT)w)->at = mn_now;
1002
712 downheap ((WT *)timers, timercnt, 0); 1003 downheap ((WT *)timers, timercnt, 0);
713 } 1004 }
714 else 1005 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1006 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1007
717 event ((W)w, EV_TIMEOUT); 1008 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1009 }
719} 1010}
720 1011
1012#if EV_PERIODICS
721static void 1013static void
722periodics_reify (EV_P) 1014periodics_reify (EV_P)
723{ 1015{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1016 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1017 {
726 struct ev_periodic *w = periodics [0]; 1018 struct ev_periodic *w = periodics [0];
727 1019
1020 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1021
728 /* first reschedule or stop timer */ 1022 /* first reschedule or stop timer */
729 if (w->interval) 1023 if (w->reschedule_cb)
730 { 1024 {
1025 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1026
1027 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1028 downheap ((WT *)periodics, periodiccnt, 0);
1029 }
1030 else if (w->interval)
1031 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1032 ((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)); 1033 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); 1034 downheap ((WT *)periodics, periodiccnt, 0);
734 } 1035 }
735 else 1036 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1037 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1038
738 event (EV_A_ (W)w, EV_PERIODIC); 1039 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1040 }
740} 1041}
741 1042
742static void 1043static void
743periodics_reschedule (EV_P_ ev_tstamp diff) 1044periodics_reschedule (EV_P)
744{ 1045{
745 int i; 1046 int i;
746 1047
747 /* adjust periodics after time jump */ 1048 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1049 for (i = 0; i < periodiccnt; ++i)
749 { 1050 {
750 struct ev_periodic *w = periodics [i]; 1051 struct ev_periodic *w = periodics [i];
751 1052
1053 if (w->reschedule_cb)
1054 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 if (w->interval) 1055 else if (w->interval)
753 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1056 ((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 } 1057 }
1058
1059 /* now rebuild the heap */
1060 for (i = periodiccnt >> 1; i--; )
1061 downheap ((WT *)periodics, periodiccnt, i);
765} 1062}
1063#endif
766 1064
767inline int 1065inline int
768time_update_monotonic (EV_P) 1066time_update_monotonic (EV_P)
769{ 1067{
770 mn_now = get_clock (); 1068 mn_now = get_clock ();
771 1069
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1070 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 { 1071 {
774 rt_now = mn_now + diff; 1072 ev_rt_now = rtmn_diff + mn_now;
775 return 0; 1073 return 0;
776 } 1074 }
777 else 1075 else
778 { 1076 {
779 now_floor = mn_now; 1077 now_floor = mn_now;
780 rt_now = ev_time (); 1078 ev_rt_now = ev_time ();
781 return 1; 1079 return 1;
782 } 1080 }
783} 1081}
784 1082
785static void 1083static void
790#if EV_USE_MONOTONIC 1088#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1089 if (expect_true (have_monotonic))
792 { 1090 {
793 if (time_update_monotonic (EV_A)) 1091 if (time_update_monotonic (EV_A))
794 { 1092 {
795 ev_tstamp odiff = diff; 1093 ev_tstamp odiff = rtmn_diff;
796 1094
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1095 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 { 1096 {
799 diff = rt_now - mn_now; 1097 rtmn_diff = ev_rt_now - mn_now;
800 1098
801 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1099 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802 return; /* all is well */ 1100 return; /* all is well */
803 1101
804 rt_now = ev_time (); 1102 ev_rt_now = ev_time ();
805 mn_now = get_clock (); 1103 mn_now = get_clock ();
806 now_floor = mn_now; 1104 now_floor = mn_now;
807 } 1105 }
808 1106
1107# if EV_PERIODICS
809 periodics_reschedule (EV_A_ diff - odiff); 1108 periodics_reschedule (EV_A);
1109# endif
810 /* no timer adjustment, as the monotonic clock doesn't jump */ 1110 /* no timer adjustment, as the monotonic clock doesn't jump */
1111 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811 } 1112 }
812 } 1113 }
813 else 1114 else
814#endif 1115#endif
815 { 1116 {
816 rt_now = ev_time (); 1117 ev_rt_now = ev_time ();
817 1118
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1119 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819 { 1120 {
1121#if EV_PERIODICS
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1122 periodics_reschedule (EV_A);
1123#endif
821 1124
822 /* adjust timers. this is easy, as the offset is the same for all */ 1125 /* adjust timers. this is easy, as the offset is the same for all */
823 for (i = 0; i < timercnt; ++i) 1126 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1127 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1128 }
826 1129
827 mn_now = rt_now; 1130 mn_now = ev_rt_now;
828 } 1131 }
829} 1132}
830 1133
831void 1134void
832ev_ref (EV_P) 1135ev_ref (EV_P)
855 { 1158 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1159 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1160 call_pending (EV_A);
858 } 1161 }
859 1162
1163 /* we might have forked, so reify kernel state if necessary */
1164 if (expect_false (postfork))
1165 loop_fork (EV_A);
1166
860 /* update fd-related kernel structures */ 1167 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1168 fd_reify (EV_A);
862 1169
863 /* calculate blocking time */ 1170 /* calculate blocking time */
864 1171
865 /* we only need this for !monotonic clockor timers, but as we basically 1172 /* we only need this for !monotonic clock or timers, but as we basically
866 always have timers, we just calculate it always */ 1173 always have timers, we just calculate it always */
867#if EV_USE_MONOTONIC 1174#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic)) 1175 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A); 1176 time_update_monotonic (EV_A);
870 else 1177 else
871#endif 1178#endif
872 { 1179 {
873 rt_now = ev_time (); 1180 ev_rt_now = ev_time ();
874 mn_now = rt_now; 1181 mn_now = ev_rt_now;
875 } 1182 }
876 1183
877 if (flags & EVLOOP_NONBLOCK || idlecnt) 1184 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.; 1185 block = 0.;
879 else 1186 else
880 { 1187 {
881 block = MAX_BLOCKTIME; 1188 block = MAX_BLOCKTIME;
882 1189
883 if (timercnt) 1190 if (timercnt)
884 { 1191 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1192 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
886 if (block > to) block = to; 1193 if (block > to) block = to;
887 } 1194 }
888 1195
1196#if EV_PERIODICS
889 if (periodiccnt) 1197 if (periodiccnt)
890 { 1198 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1199 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
892 if (block > to) block = to; 1200 if (block > to) block = to;
893 } 1201 }
1202#endif
894 1203
895 if (block < 0.) block = 0.; 1204 if (block < 0.) block = 0.;
896 } 1205 }
897 1206
898 method_poll (EV_A_ block); 1207 method_poll (EV_A_ block);
899 1208
900 /* update rt_now, do magic */ 1209 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1210 time_update (EV_A);
902 1211
903 /* queue pending timers and reschedule them */ 1212 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1213 timers_reify (EV_A); /* relative timers called last */
1214#if EV_PERIODICS
905 periodics_reify (EV_A); /* absolute timers called first */ 1215 periodics_reify (EV_A); /* absolute timers called first */
1216#endif
906 1217
907 /* queue idle watchers unless io or timers are pending */ 1218 /* queue idle watchers unless io or timers are pending */
908 if (!pendingcnt) 1219 if (idlecnt && !any_pending (EV_A))
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1220 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
910 1221
911 /* queue check watchers, to be executed first */ 1222 /* queue check watchers, to be executed first */
912 if (checkcnt) 1223 if (checkcnt)
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1224 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1225
915 call_pending (EV_A); 1226 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D
917 } 1227 }
918 while (activecnt && !loop_done); 1228 while (activecnt && !loop_done);
919 1229
920 if (loop_done != 2) 1230 if (loop_done != 2)
921 loop_done = 0; 1231 loop_done = 0;
989 return; 1299 return;
990 1300
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1301 assert (("ev_io_start called with negative fd", fd >= 0));
992 1302
993 ev_start (EV_A_ (W)w, 1); 1303 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1304 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1305 wlist_add ((WL *)&anfds[fd].head, (WL)w);
996 1306
997 fd_change (EV_A_ fd); 1307 fd_change (EV_A_ fd);
998} 1308}
999 1309
1002{ 1312{
1003 ev_clear_pending (EV_A_ (W)w); 1313 ev_clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1314 if (!ev_is_active (w))
1005 return; 1315 return;
1006 1316
1317 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1318
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1319 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1320 ev_stop (EV_A_ (W)w);
1009 1321
1010 fd_change (EV_A_ w->fd); 1322 fd_change (EV_A_ w->fd);
1011} 1323}
1014ev_timer_start (EV_P_ struct ev_timer *w) 1326ev_timer_start (EV_P_ struct ev_timer *w)
1015{ 1327{
1016 if (ev_is_active (w)) 1328 if (ev_is_active (w))
1017 return; 1329 return;
1018 1330
1019 w->at += mn_now; 1331 ((WT)w)->at += mn_now;
1020 1332
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1333 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1334
1023 ev_start (EV_A_ (W)w, ++timercnt); 1335 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1336 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1025 timers [timercnt - 1] = w; 1337 timers [timercnt - 1] = w;
1026 upheap ((WT *)timers, timercnt - 1); 1338 upheap ((WT *)timers, timercnt - 1);
1339
1340 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1027} 1341}
1028 1342
1029void 1343void
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1344ev_timer_stop (EV_P_ struct ev_timer *w)
1031{ 1345{
1032 ev_clear_pending (EV_A_ (W)w); 1346 ev_clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1347 if (!ev_is_active (w))
1034 return; 1348 return;
1035 1349
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351
1036 if (w->active < timercnt--) 1352 if (((W)w)->active < timercnt--)
1037 { 1353 {
1038 timers [w->active - 1] = timers [timercnt]; 1354 timers [((W)w)->active - 1] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1355 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1040 } 1356 }
1041 1357
1042 w->at = w->repeat; 1358 ((WT)w)->at -= mn_now;
1043 1359
1044 ev_stop (EV_A_ (W)w); 1360 ev_stop (EV_A_ (W)w);
1045} 1361}
1046 1362
1047void 1363void
1049{ 1365{
1050 if (ev_is_active (w)) 1366 if (ev_is_active (w))
1051 { 1367 {
1052 if (w->repeat) 1368 if (w->repeat)
1053 { 1369 {
1054 w->at = mn_now + w->repeat; 1370 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1371 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1056 } 1372 }
1057 else 1373 else
1058 ev_timer_stop (EV_A_ w); 1374 ev_timer_stop (EV_A_ w);
1059 } 1375 }
1060 else if (w->repeat) 1376 else if (w->repeat)
1061 ev_timer_start (EV_A_ w); 1377 ev_timer_start (EV_A_ w);
1062} 1378}
1063 1379
1380#if EV_PERIODICS
1064void 1381void
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1382ev_periodic_start (EV_P_ struct ev_periodic *w)
1066{ 1383{
1067 if (ev_is_active (w)) 1384 if (ev_is_active (w))
1068 return; 1385 return;
1069 1386
1387 if (w->reschedule_cb)
1388 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1389 else if (w->interval)
1390 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1391 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 */ 1392 /* 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; 1393 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1394 }
1075 1395
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1396 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1397 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1078 periodics [periodiccnt - 1] = w; 1398 periodics [periodiccnt - 1] = w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1399 upheap ((WT *)periodics, periodiccnt - 1);
1400
1401 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1080} 1402}
1081 1403
1082void 1404void
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1405ev_periodic_stop (EV_P_ struct ev_periodic *w)
1084{ 1406{
1085 ev_clear_pending (EV_A_ (W)w); 1407 ev_clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1408 if (!ev_is_active (w))
1087 return; 1409 return;
1088 1410
1411 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1412
1089 if (w->active < periodiccnt--) 1413 if (((W)w)->active < periodiccnt--)
1090 { 1414 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1415 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1416 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1093 } 1417 }
1094 1418
1419 ev_stop (EV_A_ (W)w);
1420}
1421
1422void
1423ev_periodic_again (EV_P_ struct ev_periodic *w)
1424{
1425 /* TODO: use adjustheap and recalculation */
1426 ev_periodic_stop (EV_A_ w);
1427 ev_periodic_start (EV_A_ w);
1428}
1429#endif
1430
1431void
1432ev_idle_start (EV_P_ struct ev_idle *w)
1433{
1434 if (ev_is_active (w))
1435 return;
1436
1437 ev_start (EV_A_ (W)w, ++idlecnt);
1438 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1439 idles [idlecnt - 1] = w;
1440}
1441
1442void
1443ev_idle_stop (EV_P_ struct ev_idle *w)
1444{
1445 ev_clear_pending (EV_A_ (W)w);
1446 if (!ev_is_active (w))
1447 return;
1448
1449 idles [((W)w)->active - 1] = idles [--idlecnt];
1450 ev_stop (EV_A_ (W)w);
1451}
1452
1453void
1454ev_prepare_start (EV_P_ struct ev_prepare *w)
1455{
1456 if (ev_is_active (w))
1457 return;
1458
1459 ev_start (EV_A_ (W)w, ++preparecnt);
1460 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1461 prepares [preparecnt - 1] = w;
1462}
1463
1464void
1465ev_prepare_stop (EV_P_ struct ev_prepare *w)
1466{
1467 ev_clear_pending (EV_A_ (W)w);
1468 if (!ev_is_active (w))
1469 return;
1470
1471 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1472 ev_stop (EV_A_ (W)w);
1473}
1474
1475void
1476ev_check_start (EV_P_ struct ev_check *w)
1477{
1478 if (ev_is_active (w))
1479 return;
1480
1481 ev_start (EV_A_ (W)w, ++checkcnt);
1482 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1483 checks [checkcnt - 1] = w;
1484}
1485
1486void
1487ev_check_stop (EV_P_ struct ev_check *w)
1488{
1489 ev_clear_pending (EV_A_ (W)w);
1490 if (!ev_is_active (w))
1491 return;
1492
1493 checks [((W)w)->active - 1] = checks [--checkcnt];
1095 ev_stop (EV_A_ (W)w); 1494 ev_stop (EV_A_ (W)w);
1096} 1495}
1097 1496
1098#ifndef SA_RESTART 1497#ifndef SA_RESTART
1099# define SA_RESTART 0 1498# define SA_RESTART 0
1100#endif 1499#endif
1101 1500
1102void 1501void
1103ev_signal_start (EV_P_ struct ev_signal *w) 1502ev_signal_start (EV_P_ struct ev_signal *w)
1104{ 1503{
1504#if EV_MULTIPLICITY
1505 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1506#endif
1105 if (ev_is_active (w)) 1507 if (ev_is_active (w))
1106 return; 1508 return;
1107 1509
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1510 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 1511
1110 ev_start (EV_A_ (W)w, 1); 1512 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init); 1513 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1514 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113 1515
1114 if (!w->next) 1516 if (!((WL)w)->next)
1115 { 1517 {
1518#if _WIN32
1519 signal (w->signum, sighandler);
1520#else
1116 struct sigaction sa; 1521 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1522 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1523 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1524 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1525 sigaction (w->signum, &sa, 0);
1526#endif
1121 } 1527 }
1122} 1528}
1123 1529
1124void 1530void
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1531ev_signal_stop (EV_P_ struct ev_signal *w)
1134 if (!signals [w->signum - 1].head) 1540 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1541 signal (w->signum, SIG_DFL);
1136} 1542}
1137 1543
1138void 1544void
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) 1545ev_child_start (EV_P_ struct ev_child *w)
1206{ 1546{
1547#if EV_MULTIPLICITY
1548 assert (("child watchers are only supported in the default loop", loop == default_loop));
1549#endif
1207 if (ev_is_active (w)) 1550 if (ev_is_active (w))
1208 return; 1551 return;
1209 1552
1210 ev_start (EV_A_ (W)w, 1); 1553 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1554 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213 1556
1214void 1557void
1215ev_child_stop (EV_P_ struct ev_child *w) 1558ev_child_stop (EV_P_ struct ev_child *w)
1216{ 1559{
1217 ev_clear_pending (EV_A_ (W)w); 1560 ev_clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 1561 if (!ev_is_active (w))
1219 return; 1562 return;
1220 1563
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1564 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1222 ev_stop (EV_A_ (W)w); 1565 ev_stop (EV_A_ (W)w);
1223} 1566}
1238 void (*cb)(int revents, void *arg) = once->cb; 1581 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 1582 void *arg = once->arg;
1240 1583
1241 ev_io_stop (EV_A_ &once->io); 1584 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 1585 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 1586 ev_free (once);
1244 1587
1245 cb (revents, arg); 1588 cb (revents, arg);
1246} 1589}
1247 1590
1248static void 1591static void
1258} 1601}
1259 1602
1260void 1603void
1261ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1604ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262{ 1605{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 1606 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 1607
1265 if (!once) 1608 if (!once)
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1609 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 1610 else
1268 { 1611 {
1269 once->cb = cb; 1612 once->cb = cb;
1270 once->arg = arg; 1613 once->arg = arg;
1271 1614
1272 ev_watcher_init (&once->io, once_cb_io); 1615 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 1616 if (fd >= 0)
1274 { 1617 {
1275 ev_io_set (&once->io, fd, events); 1618 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 1619 ev_io_start (EV_A_ &once->io);
1277 } 1620 }
1278 1621
1279 ev_watcher_init (&once->to, once_cb_to); 1622 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 1623 if (timeout >= 0.)
1281 { 1624 {
1282 ev_timer_set (&once->to, timeout, 0.); 1625 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 1626 ev_timer_start (EV_A_ &once->to);
1284 } 1627 }
1285 } 1628 }
1286} 1629}
1287 1630
1288/*****************************************************************************/ 1631#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} 1632}
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 1633#endif
1344 1634
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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