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Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 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
57#endif 96#endif
58 97
59#ifndef EV_USE_SELECT 98#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 99# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
61#endif 101#endif
62 102
63#ifndef EV_USEV_POLL 103#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 104# ifdef _WIN32
105# define EV_USE_POLL 0
106# else
107# define EV_USE_POLL 1
108# endif
65#endif 109#endif
66 110
67#ifndef EV_USE_EPOLL 111#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 112# define EV_USE_EPOLL 0
69#endif 113#endif
75#ifndef EV_USE_REALTIME 119#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 120# define EV_USE_REALTIME 1
77#endif 121#endif
78 122
79/**/ 123/**/
124
125/* darwin simply cannot be helped */
126#ifdef __APPLE__
127# undef EV_USE_POLL
128# undef EV_USE_KQUEUE
129#endif
80 130
81#ifndef CLOCK_MONOTONIC 131#ifndef CLOCK_MONOTONIC
82# undef EV_USE_MONOTONIC 132# undef EV_USE_MONOTONIC
83# define EV_USE_MONOTONIC 0 133# define EV_USE_MONOTONIC 0
84#endif 134#endif
85 135
86#ifndef CLOCK_REALTIME 136#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 137# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 138# define EV_USE_REALTIME 0
139#endif
140
141#if EV_SELECT_IS_WINSOCKET
142# include <winsock.h>
89#endif 143#endif
90 144
91/**/ 145/**/
92 146
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 147#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) */ 148#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 */ 149#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 */ 150/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
97 151
152#ifdef EV_H
153# include EV_H
154#else
98#include "ev.h" 155# include "ev.h"
156#endif
99 157
100#if __GNUC__ >= 3 158#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value)) 159# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 160# define inline inline
103#else 161#else
109#define expect_true(expr) expect ((expr) != 0, 1) 167#define expect_true(expr) expect ((expr) != 0, 1)
110 168
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 169#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 170#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113 171
172#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
173#define EMPTY2(a,b) /* used to suppress some warnings */
174
114typedef struct ev_watcher *W; 175typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 176typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 177typedef struct ev_watcher_time *WT;
117 178
118static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 179static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119 180
181#ifdef _WIN32
182# include "ev_win32.c"
183#endif
184
120/*****************************************************************************/ 185/*****************************************************************************/
121 186
187static void (*syserr_cb)(const char *msg);
188
189void ev_set_syserr_cb (void (*cb)(const char *msg))
190{
191 syserr_cb = cb;
192}
193
194static void
195syserr (const char *msg)
196{
197 if (!msg)
198 msg = "(libev) system error";
199
200 if (syserr_cb)
201 syserr_cb (msg);
202 else
203 {
204 perror (msg);
205 abort ();
206 }
207}
208
209static void *(*alloc)(void *ptr, long size);
210
211void ev_set_allocator (void *(*cb)(void *ptr, long size))
212{
213 alloc = cb;
214}
215
216static void *
217ev_realloc (void *ptr, long size)
218{
219 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
220
221 if (!ptr && size)
222 {
223 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
224 abort ();
225 }
226
227 return ptr;
228}
229
230#define ev_malloc(size) ev_realloc (0, (size))
231#define ev_free(ptr) ev_realloc ((ptr), 0)
232
233/*****************************************************************************/
234
122typedef struct 235typedef struct
123{ 236{
124 struct ev_watcher_list *head; 237 WL head;
125 unsigned char events; 238 unsigned char events;
126 unsigned char reify; 239 unsigned char reify;
240#if EV_SELECT_IS_WINSOCKET
241 SOCKET handle;
242#endif
127} ANFD; 243} ANFD;
128 244
129typedef struct 245typedef struct
130{ 246{
131 W w; 247 W w;
132 int events; 248 int events;
133} ANPENDING; 249} ANPENDING;
134 250
135#if EV_MULTIPLICITY 251#if EV_MULTIPLICITY
136 252
137struct ev_loop 253 struct ev_loop
138{ 254 {
255 ev_tstamp ev_rt_now;
256 #define ev_rt_now ((loop)->ev_rt_now)
139# define VAR(name,decl) decl; 257 #define VAR(name,decl) decl;
140# include "ev_vars.h" 258 #include "ev_vars.h"
141};
142# undef VAR 259 #undef VAR
260 };
143# include "ev_wrap.h" 261 #include "ev_wrap.h"
262
263 struct ev_loop default_loop_struct;
264 static struct ev_loop *default_loop;
144 265
145#else 266#else
146 267
268 ev_tstamp ev_rt_now;
147# define VAR(name,decl) static decl; 269 #define VAR(name,decl) static decl;
148# include "ev_vars.h" 270 #include "ev_vars.h"
149# undef VAR 271 #undef VAR
272
273 static int default_loop;
150 274
151#endif 275#endif
152 276
153/*****************************************************************************/ 277/*****************************************************************************/
154 278
155inline ev_tstamp 279ev_tstamp
156ev_time (void) 280ev_time (void)
157{ 281{
158#if EV_USE_REALTIME 282#if EV_USE_REALTIME
159 struct timespec ts; 283 struct timespec ts;
160 clock_gettime (CLOCK_REALTIME, &ts); 284 clock_gettime (CLOCK_REALTIME, &ts);
179#endif 303#endif
180 304
181 return ev_time (); 305 return ev_time ();
182} 306}
183 307
308#if EV_MULTIPLICITY
184ev_tstamp 309ev_tstamp
185ev_now (EV_P) 310ev_now (EV_P)
186{ 311{
187 return rt_now; 312 return ev_rt_now;
188} 313}
314#endif
189 315
190#define array_roundsize(base,n) ((n) | 4 & ~3) 316#define array_roundsize(type,n) (((n) | 4) & ~3)
191 317
192#define array_needsize(base,cur,cnt,init) \ 318#define array_needsize(type,base,cur,cnt,init) \
193 if (expect_false ((cnt) > cur)) \ 319 if (expect_false ((cnt) > cur)) \
194 { \ 320 { \
195 int newcnt = cur; \ 321 int newcnt = cur; \
196 do \ 322 do \
197 { \ 323 { \
198 newcnt = array_roundsize (base, newcnt << 1); \ 324 newcnt = array_roundsize (type, newcnt << 1); \
199 } \ 325 } \
200 while ((cnt) > newcnt); \ 326 while ((cnt) > newcnt); \
201 \ 327 \
202 base = realloc (base, sizeof (*base) * (newcnt)); \ 328 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
203 init (base + cur, newcnt - cur); \ 329 init (base + cur, newcnt - cur); \
204 cur = newcnt; \ 330 cur = newcnt; \
205 } 331 }
332
333#define array_slim(type,stem) \
334 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
335 { \
336 stem ## max = array_roundsize (stem ## cnt >> 1); \
337 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
338 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
339 }
340
341#define array_free(stem, idx) \
342 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206 343
207/*****************************************************************************/ 344/*****************************************************************************/
208 345
209static void 346static void
210anfds_init (ANFD *base, int count) 347anfds_init (ANFD *base, int count)
217 354
218 ++base; 355 ++base;
219 } 356 }
220} 357}
221 358
222static void 359void
223event (EV_P_ W w, int events) 360ev_feed_event (EV_P_ void *w, int revents)
224{ 361{
362 W w_ = (W)w;
363
225 if (w->pending) 364 if (w_->pending)
226 { 365 {
227 pendings [ABSPRI (w)][w->pending - 1].events |= events; 366 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
228 return; 367 return;
229 } 368 }
230 369
231 w->pending = ++pendingcnt [ABSPRI (w)]; 370 w_->pending = ++pendingcnt [ABSPRI (w_)];
232 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 371 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
233 pendings [ABSPRI (w)][w->pending - 1].w = w; 372 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234 pendings [ABSPRI (w)][w->pending - 1].events = events; 373 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235} 374}
236 375
237static void 376static void
238queue_events (EV_P_ W *events, int eventcnt, int type) 377queue_events (EV_P_ W *events, int eventcnt, int type)
239{ 378{
240 int i; 379 int i;
241 380
242 for (i = 0; i < eventcnt; ++i) 381 for (i = 0; i < eventcnt; ++i)
243 event (EV_A_ events [i], type); 382 ev_feed_event (EV_A_ events [i], type);
244} 383}
245 384
246static void 385inline void
247fd_event (EV_P_ int fd, int events) 386fd_event (EV_P_ int fd, int revents)
248{ 387{
249 ANFD *anfd = anfds + fd; 388 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 389 struct ev_io *w;
251 390
252 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 391 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
253 { 392 {
254 int ev = w->events & events; 393 int ev = w->events & revents;
255 394
256 if (ev) 395 if (ev)
257 event (EV_A_ (W)w, ev); 396 ev_feed_event (EV_A_ (W)w, ev);
258 } 397 }
398}
399
400void
401ev_feed_fd_event (EV_P_ int fd, int revents)
402{
403 fd_event (EV_A_ fd, revents);
259} 404}
260 405
261/*****************************************************************************/ 406/*****************************************************************************/
262 407
263static void 408static void
274 int events = 0; 419 int events = 0;
275 420
276 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 421 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
277 events |= w->events; 422 events |= w->events;
278 423
424#if EV_SELECT_IS_WINSOCKET
425 if (events)
426 {
427 unsigned long argp;
428 anfd->handle = _get_osfhandle (fd);
429 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
430 }
431#endif
432
279 anfd->reify = 0; 433 anfd->reify = 0;
280 434
281 if (anfd->events != events)
282 {
283 method_modify (EV_A_ fd, anfd->events, events); 435 method_modify (EV_A_ fd, anfd->events, events);
284 anfd->events = events; 436 anfd->events = events;
285 }
286 } 437 }
287 438
288 fdchangecnt = 0; 439 fdchangecnt = 0;
289} 440}
290 441
291static void 442static void
292fd_change (EV_P_ int fd) 443fd_change (EV_P_ int fd)
293{ 444{
294 if (anfds [fd].reify || fdchangecnt < 0) 445 if (anfds [fd].reify)
295 return; 446 return;
296 447
297 anfds [fd].reify = 1; 448 anfds [fd].reify = 1;
298 449
299 ++fdchangecnt; 450 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 451 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301 fdchanges [fdchangecnt - 1] = fd; 452 fdchanges [fdchangecnt - 1] = fd;
302} 453}
303 454
304static void 455static void
305fd_kill (EV_P_ int fd) 456fd_kill (EV_P_ int fd)
307 struct ev_io *w; 458 struct ev_io *w;
308 459
309 while ((w = (struct ev_io *)anfds [fd].head)) 460 while ((w = (struct ev_io *)anfds [fd].head))
310 { 461 {
311 ev_io_stop (EV_A_ w); 462 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 463 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 464 }
465}
466
467static int
468fd_valid (int fd)
469{
470#ifdef _WIN32
471 return _get_osfhandle (fd) != -1;
472#else
473 return fcntl (fd, F_GETFD) != -1;
474#endif
314} 475}
315 476
316/* called on EBADF to verify fds */ 477/* called on EBADF to verify fds */
317static void 478static void
318fd_ebadf (EV_P) 479fd_ebadf (EV_P)
319{ 480{
320 int fd; 481 int fd;
321 482
322 for (fd = 0; fd < anfdmax; ++fd) 483 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 484 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 485 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 486 fd_kill (EV_A_ fd);
326} 487}
327 488
328/* called on ENOMEM in select/poll to kill some fds and retry */ 489/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 490static void
330fd_enomem (EV_P) 491fd_enomem (EV_P)
331{ 492{
332 int fd = anfdmax; 493 int fd;
333 494
334 while (fd--) 495 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 496 if (anfds [fd].events)
336 { 497 {
337 close (fd);
338 fd_kill (EV_A_ fd); 498 fd_kill (EV_A_ fd);
339 return; 499 return;
340 } 500 }
341} 501}
342 502
503/* usually called after fork if method needs to re-arm all fds from scratch */
504static void
505fd_rearm_all (EV_P)
506{
507 int fd;
508
509 /* this should be highly optimised to not do anything but set a flag */
510 for (fd = 0; fd < anfdmax; ++fd)
511 if (anfds [fd].events)
512 {
513 anfds [fd].events = 0;
514 fd_change (EV_A_ fd);
515 }
516}
517
343/*****************************************************************************/ 518/*****************************************************************************/
344 519
345static void 520static void
346upheap (WT *heap, int k) 521upheap (WT *heap, int k)
347{ 522{
348 WT w = heap [k]; 523 WT w = heap [k];
349 524
350 while (k && heap [k >> 1]->at > w->at) 525 while (k && heap [k >> 1]->at > w->at)
351 { 526 {
352 heap [k] = heap [k >> 1]; 527 heap [k] = heap [k >> 1];
353 heap [k]->active = k + 1; 528 ((W)heap [k])->active = k + 1;
354 k >>= 1; 529 k >>= 1;
355 } 530 }
356 531
357 heap [k] = w; 532 heap [k] = w;
358 heap [k]->active = k + 1; 533 ((W)heap [k])->active = k + 1;
359 534
360} 535}
361 536
362static void 537static void
363downheap (WT *heap, int N, int k) 538downheap (WT *heap, int N, int k)
373 548
374 if (w->at <= heap [j]->at) 549 if (w->at <= heap [j]->at)
375 break; 550 break;
376 551
377 heap [k] = heap [j]; 552 heap [k] = heap [j];
378 heap [k]->active = k + 1; 553 ((W)heap [k])->active = k + 1;
379 k = j; 554 k = j;
380 } 555 }
381 556
382 heap [k] = w; 557 heap [k] = w;
383 heap [k]->active = k + 1; 558 ((W)heap [k])->active = k + 1;
559}
560
561inline void
562adjustheap (WT *heap, int N, int k)
563{
564 upheap (heap, k);
565 downheap (heap, N, k);
384} 566}
385 567
386/*****************************************************************************/ 568/*****************************************************************************/
387 569
388typedef struct 570typedef struct
389{ 571{
390 struct ev_watcher_list *head; 572 WL head;
391 sig_atomic_t volatile gotsig; 573 sig_atomic_t volatile gotsig;
392} ANSIG; 574} ANSIG;
393 575
394static ANSIG *signals; 576static ANSIG *signals;
395static int signalmax; 577static int signalmax;
396 578
397static int sigpipe [2]; 579static int sigpipe [2];
398static sig_atomic_t volatile gotsig; 580static sig_atomic_t volatile gotsig;
581static struct ev_io sigev;
399 582
400static void 583static void
401signals_init (ANSIG *base, int count) 584signals_init (ANSIG *base, int count)
402{ 585{
403 while (count--) 586 while (count--)
410} 593}
411 594
412static void 595static void
413sighandler (int signum) 596sighandler (int signum)
414{ 597{
598#if _WIN32
599 signal (signum, sighandler);
600#endif
601
415 signals [signum - 1].gotsig = 1; 602 signals [signum - 1].gotsig = 1;
416 603
417 if (!gotsig) 604 if (!gotsig)
418 { 605 {
419 int old_errno = errno; 606 int old_errno = errno;
421 write (sigpipe [1], &signum, 1); 608 write (sigpipe [1], &signum, 1);
422 errno = old_errno; 609 errno = old_errno;
423 } 610 }
424} 611}
425 612
613void
614ev_feed_signal_event (EV_P_ int signum)
615{
616 WL w;
617
618#if EV_MULTIPLICITY
619 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
620#endif
621
622 --signum;
623
624 if (signum < 0 || signum >= signalmax)
625 return;
626
627 signals [signum].gotsig = 0;
628
629 for (w = signals [signum].head; w; w = w->next)
630 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
631}
632
426static void 633static void
427sigcb (EV_P_ struct ev_io *iow, int revents) 634sigcb (EV_P_ struct ev_io *iow, int revents)
428{ 635{
429 struct ev_watcher_list *w;
430 int signum; 636 int signum;
431 637
432 read (sigpipe [0], &revents, 1); 638 read (sigpipe [0], &revents, 1);
433 gotsig = 0; 639 gotsig = 0;
434 640
435 for (signum = signalmax; signum--; ) 641 for (signum = signalmax; signum--; )
436 if (signals [signum].gotsig) 642 if (signals [signum].gotsig)
437 { 643 ev_feed_signal_event (EV_A_ signum + 1);
438 signals [signum].gotsig = 0; 644}
439 645
440 for (w = signals [signum].head; w; w = w->next) 646inline void
441 event (EV_A_ (W)w, EV_SIGNAL); 647fd_intern (int fd)
442 } 648{
649#ifdef _WIN32
650 int arg = 1;
651 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
652#else
653 fcntl (fd, F_SETFD, FD_CLOEXEC);
654 fcntl (fd, F_SETFL, O_NONBLOCK);
655#endif
443} 656}
444 657
445static void 658static void
446siginit (EV_P) 659siginit (EV_P)
447{ 660{
448#ifndef WIN32 661 fd_intern (sigpipe [0]);
449 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 662 fd_intern (sigpipe [1]);
450 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452 /* rather than sort out wether we really need nb, set it */
453 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455#endif
456 663
457 ev_io_set (&sigev, sigpipe [0], EV_READ); 664 ev_io_set (&sigev, sigpipe [0], EV_READ);
458 ev_io_start (EV_A_ &sigev); 665 ev_io_start (EV_A_ &sigev);
459 ev_unref (EV_A); /* child watcher should not keep loop alive */ 666 ev_unref (EV_A); /* child watcher should not keep loop alive */
460} 667}
461 668
462/*****************************************************************************/ 669/*****************************************************************************/
463 670
671static struct ev_child *childs [PID_HASHSIZE];
672
464#ifndef WIN32 673#ifndef _WIN32
674
675static struct ev_signal childev;
465 676
466#ifndef WCONTINUED 677#ifndef WCONTINUED
467# define WCONTINUED 0 678# define WCONTINUED 0
468#endif 679#endif
469 680
473 struct ev_child *w; 684 struct ev_child *w;
474 685
475 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 686 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
476 if (w->pid == pid || !w->pid) 687 if (w->pid == pid || !w->pid)
477 { 688 {
478 w->priority = sw->priority; /* need to do it *now* */ 689 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
479 w->rpid = pid; 690 w->rpid = pid;
480 w->rstatus = status; 691 w->rstatus = status;
481 event (EV_A_ (W)w, EV_CHILD); 692 ev_feed_event (EV_A_ (W)w, EV_CHILD);
482 } 693 }
483} 694}
484 695
485static void 696static void
486childcb (EV_P_ struct ev_signal *sw, int revents) 697childcb (EV_P_ struct ev_signal *sw, int revents)
488 int pid, status; 699 int pid, status;
489 700
490 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 701 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491 { 702 {
492 /* make sure we are called again until all childs have been reaped */ 703 /* make sure we are called again until all childs have been reaped */
493 event (EV_A_ (W)sw, EV_SIGNAL); 704 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494 705
495 child_reap (EV_A_ sw, pid, pid, status); 706 child_reap (EV_A_ sw, pid, pid, status);
496 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 707 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497 } 708 }
498} 709}
505# include "ev_kqueue.c" 716# include "ev_kqueue.c"
506#endif 717#endif
507#if EV_USE_EPOLL 718#if EV_USE_EPOLL
508# include "ev_epoll.c" 719# include "ev_epoll.c"
509#endif 720#endif
510#if EV_USEV_POLL 721#if EV_USE_POLL
511# include "ev_poll.c" 722# include "ev_poll.c"
512#endif 723#endif
513#if EV_USE_SELECT 724#if EV_USE_SELECT
514# include "ev_select.c" 725# include "ev_select.c"
515#endif 726#endif
528 739
529/* return true if we are running with elevated privileges and should ignore env variables */ 740/* return true if we are running with elevated privileges and should ignore env variables */
530static int 741static int
531enable_secure (void) 742enable_secure (void)
532{ 743{
533#ifdef WIN32 744#ifdef _WIN32
534 return 0; 745 return 0;
535#else 746#else
536 return getuid () != geteuid () 747 return getuid () != geteuid ()
537 || getgid () != getegid (); 748 || getgid () != getegid ();
538#endif 749#endif
539} 750}
540 751
541int 752unsigned int
542ev_method (EV_P) 753ev_method (EV_P)
543{ 754{
544 return method; 755 return method;
545} 756}
546 757
547inline int 758static void
548loop_init (EV_P_ int methods) 759loop_init (EV_P_ unsigned int flags)
549{ 760{
550 if (!method) 761 if (!method)
551 { 762 {
552#if EV_USE_MONOTONIC 763#if EV_USE_MONOTONIC
553 { 764 {
555 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 766 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556 have_monotonic = 1; 767 have_monotonic = 1;
557 } 768 }
558#endif 769#endif
559 770
560 rt_now = ev_time (); 771 ev_rt_now = ev_time ();
561 mn_now = get_clock (); 772 mn_now = get_clock ();
562 now_floor = mn_now; 773 now_floor = mn_now;
563 rtmn_diff = rt_now - mn_now; 774 rtmn_diff = ev_rt_now - mn_now;
564 775
565 if (pipe (sigpipe)) 776 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
566 return 0; 777 flags = atoi (getenv ("LIBEV_FLAGS"));
567 778
568 if (methods == EVMETHOD_AUTO) 779 if (!(flags & 0x0000ffff))
569 if (!enable_secure () && getenv ("LIBmethodS")) 780 flags |= 0x0000ffff;
570 methods = atoi (getenv ("LIBmethodS"));
571 else
572 methods = EVMETHOD_ANY;
573 781
574 method = 0; 782 method = 0;
575#if EV_USE_KQUEUE 783#if EV_USE_KQUEUE
576 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 784 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
577#endif 785#endif
578#if EV_USE_EPOLL 786#if EV_USE_EPOLL
579 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 787 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
580#endif 788#endif
581#if EV_USEV_POLL 789#if EV_USE_POLL
582 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 790 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
583#endif 791#endif
584#if EV_USE_SELECT 792#if EV_USE_SELECT
585 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 793 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
586#endif 794#endif
587 795
796 ev_init (&sigev, sigcb);
797 ev_set_priority (&sigev, EV_MAXPRI);
798 }
799}
800
801void
802loop_destroy (EV_P)
803{
804 int i;
805
806#if EV_USE_KQUEUE
807 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
808#endif
809#if EV_USE_EPOLL
810 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
811#endif
812#if EV_USE_POLL
813 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
814#endif
815#if EV_USE_SELECT
816 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
817#endif
818
819 for (i = NUMPRI; i--; )
820 array_free (pending, [i]);
821
822 /* have to use the microsoft-never-gets-it-right macro */
823 array_free (fdchange, EMPTY0);
824 array_free (timer, EMPTY0);
825#if EV_PERIODICS
826 array_free (periodic, EMPTY0);
827#endif
828 array_free (idle, EMPTY0);
829 array_free (prepare, EMPTY0);
830 array_free (check, EMPTY0);
831
832 method = 0;
833}
834
835static void
836loop_fork (EV_P)
837{
838#if EV_USE_EPOLL
839 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
840#endif
841#if EV_USE_KQUEUE
842 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
843#endif
844
845 if (ev_is_active (&sigev))
846 {
847 /* default loop */
848
849 ev_ref (EV_A);
850 ev_io_stop (EV_A_ &sigev);
851 close (sigpipe [0]);
852 close (sigpipe [1]);
853
854 while (pipe (sigpipe))
855 syserr ("(libev) error creating pipe");
856
857 siginit (EV_A);
858 }
859
860 postfork = 0;
861}
862
863#if EV_MULTIPLICITY
864struct ev_loop *
865ev_loop_new (unsigned int flags)
866{
867 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
868
869 memset (loop, 0, sizeof (struct ev_loop));
870
871 loop_init (EV_A_ flags);
872
873 if (ev_method (EV_A))
874 return loop;
875
876 return 0;
877}
878
879void
880ev_loop_destroy (EV_P)
881{
882 loop_destroy (EV_A);
883 ev_free (loop);
884}
885
886void
887ev_loop_fork (EV_P)
888{
889 postfork = 1;
890}
891
892#endif
893
894#if EV_MULTIPLICITY
895struct ev_loop *
896#else
897int
898#endif
899ev_default_loop (unsigned int flags)
900{
901 if (sigpipe [0] == sigpipe [1])
902 if (pipe (sigpipe))
903 return 0;
904
905 if (!default_loop)
906 {
907#if EV_MULTIPLICITY
908 struct ev_loop *loop = default_loop = &default_loop_struct;
909#else
910 default_loop = 1;
911#endif
912
913 loop_init (EV_A_ flags);
914
588 if (method) 915 if (ev_method (EV_A))
589 { 916 {
590 ev_watcher_init (&sigev, sigcb);
591 ev_set_priority (&sigev, EV_MAXPRI);
592 siginit (EV_A); 917 siginit (EV_A);
593 918
594#ifndef WIN32 919#ifndef _WIN32
595 ev_signal_init (&childev, childcb, SIGCHLD); 920 ev_signal_init (&childev, childcb, SIGCHLD);
596 ev_set_priority (&childev, EV_MAXPRI); 921 ev_set_priority (&childev, EV_MAXPRI);
597 ev_signal_start (EV_A_ &childev); 922 ev_signal_start (EV_A_ &childev);
598 ev_unref (EV_A); /* child watcher should not keep loop alive */ 923 ev_unref (EV_A); /* child watcher should not keep loop alive */
599#endif 924#endif
600 } 925 }
926 else
927 default_loop = 0;
601 } 928 }
602 929
603 return method; 930 return default_loop;
604} 931}
605 932
933void
934ev_default_destroy (void)
935{
606#if EV_MULTIPLICITY 936#if EV_MULTIPLICITY
937 struct ev_loop *loop = default_loop;
938#endif
607 939
608struct ev_loop * 940#ifndef _WIN32
609ev_loop_new (int methods) 941 ev_ref (EV_A); /* child watcher */
610{ 942 ev_signal_stop (EV_A_ &childev);
611 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 943#endif
612 944
613 if (loop_init (EV_A_ methods)) 945 ev_ref (EV_A); /* signal watcher */
946 ev_io_stop (EV_A_ &sigev);
947
948 close (sigpipe [0]); sigpipe [0] = 0;
949 close (sigpipe [1]); sigpipe [1] = 0;
950
951 loop_destroy (EV_A);
952}
953
954void
955ev_default_fork (void)
956{
957#if EV_MULTIPLICITY
958 struct ev_loop *loop = default_loop;
959#endif
960
961 if (method)
962 postfork = 1;
963}
964
965/*****************************************************************************/
966
967static int
968any_pending (EV_P)
969{
970 int pri;
971
972 for (pri = NUMPRI; pri--; )
973 if (pendingcnt [pri])
614 return loop; 974 return 1;
615
616 ev_loop_delete (loop);
617 975
618 return 0; 976 return 0;
619} 977}
620
621void
622ev_loop_delete (EV_P)
623{
624 /*TODO*/
625 free (loop);
626}
627
628#else
629
630int
631ev_init (int methods)
632{
633 return loop_init (methods);
634}
635
636#endif
637
638/*****************************************************************************/
639
640void
641ev_fork_prepare (void)
642{
643 /* nop */
644}
645
646void
647ev_fork_parent (void)
648{
649 /* nop */
650}
651
652void
653ev_fork_child (void)
654{
655 /*TODO*/
656#if !EV_MULTIPLICITY
657#if EV_USE_EPOLL
658 if (method == EVMETHOD_EPOLL)
659 epoll_postfork_child (EV_A);
660#endif
661
662 ev_io_stop (EV_A_ &sigev);
663 close (sigpipe [0]);
664 close (sigpipe [1]);
665 pipe (sigpipe);
666 siginit (EV_A);
667#endif
668}
669
670/*****************************************************************************/
671 978
672static void 979static void
673call_pending (EV_P) 980call_pending (EV_P)
674{ 981{
675 int pri; 982 int pri;
680 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 987 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
681 988
682 if (p->w) 989 if (p->w)
683 { 990 {
684 p->w->pending = 0; 991 p->w->pending = 0;
685 p->w->cb (EV_A_ p->w, p->events); 992 EV_CB_INVOKE (p->w, p->events);
686 } 993 }
687 } 994 }
688} 995}
689 996
690static void 997static void
691timers_reify (EV_P) 998timers_reify (EV_P)
692{ 999{
693 while (timercnt && timers [0]->at <= mn_now) 1000 while (timercnt && ((WT)timers [0])->at <= mn_now)
694 { 1001 {
695 struct ev_timer *w = timers [0]; 1002 struct ev_timer *w = timers [0];
1003
1004 assert (("inactive timer on timer heap detected", ev_is_active (w)));
696 1005
697 /* first reschedule or stop timer */ 1006 /* first reschedule or stop timer */
698 if (w->repeat) 1007 if (w->repeat)
699 { 1008 {
700 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1009 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1010
701 w->at = mn_now + w->repeat; 1011 ((WT)w)->at += w->repeat;
1012 if (((WT)w)->at < mn_now)
1013 ((WT)w)->at = mn_now;
1014
702 downheap ((WT *)timers, timercnt, 0); 1015 downheap ((WT *)timers, timercnt, 0);
703 } 1016 }
704 else 1017 else
705 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1018 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706 1019
707 event (EV_A_ (W)w, EV_TIMEOUT); 1020 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
708 } 1021 }
709} 1022}
710 1023
1024#if EV_PERIODICS
711static void 1025static void
712periodics_reify (EV_P) 1026periodics_reify (EV_P)
713{ 1027{
714 while (periodiccnt && periodics [0]->at <= rt_now) 1028 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
715 { 1029 {
716 struct ev_periodic *w = periodics [0]; 1030 struct ev_periodic *w = periodics [0];
717 1031
1032 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1033
718 /* first reschedule or stop timer */ 1034 /* first reschedule or stop timer */
719 if (w->interval) 1035 if (w->reschedule_cb)
720 { 1036 {
1037 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1038 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1039 downheap ((WT *)periodics, periodiccnt, 0);
1040 }
1041 else if (w->interval)
1042 {
721 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1043 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
722 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1044 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
723 downheap ((WT *)periodics, periodiccnt, 0); 1045 downheap ((WT *)periodics, periodiccnt, 0);
724 } 1046 }
725 else 1047 else
726 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727 1049
728 event (EV_A_ (W)w, EV_PERIODIC); 1050 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
729 } 1051 }
730} 1052}
731 1053
732static void 1054static void
733periodics_reschedule (EV_P) 1055periodics_reschedule (EV_P)
737 /* adjust periodics after time jump */ 1059 /* adjust periodics after time jump */
738 for (i = 0; i < periodiccnt; ++i) 1060 for (i = 0; i < periodiccnt; ++i)
739 { 1061 {
740 struct ev_periodic *w = periodics [i]; 1062 struct ev_periodic *w = periodics [i];
741 1063
1064 if (w->reschedule_cb)
1065 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
742 if (w->interval) 1066 else if (w->interval)
743 {
744 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1067 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
745
746 if (fabs (diff) >= 1e-4)
747 {
748 ev_periodic_stop (EV_A_ w);
749 ev_periodic_start (EV_A_ w);
750
751 i = 0; /* restart loop, inefficient, but time jumps should be rare */
752 }
753 }
754 } 1068 }
1069
1070 /* now rebuild the heap */
1071 for (i = periodiccnt >> 1; i--; )
1072 downheap ((WT *)periodics, periodiccnt, i);
755} 1073}
1074#endif
756 1075
757inline int 1076inline int
758time_update_monotonic (EV_P) 1077time_update_monotonic (EV_P)
759{ 1078{
760 mn_now = get_clock (); 1079 mn_now = get_clock ();
761 1080
762 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1081 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
763 { 1082 {
764 rt_now = rtmn_diff + mn_now; 1083 ev_rt_now = rtmn_diff + mn_now;
765 return 0; 1084 return 0;
766 } 1085 }
767 else 1086 else
768 { 1087 {
769 now_floor = mn_now; 1088 now_floor = mn_now;
770 rt_now = ev_time (); 1089 ev_rt_now = ev_time ();
771 return 1; 1090 return 1;
772 } 1091 }
773} 1092}
774 1093
775static void 1094static void
784 { 1103 {
785 ev_tstamp odiff = rtmn_diff; 1104 ev_tstamp odiff = rtmn_diff;
786 1105
787 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1106 for (i = 4; --i; ) /* loop a few times, before making important decisions */
788 { 1107 {
789 rtmn_diff = rt_now - mn_now; 1108 rtmn_diff = ev_rt_now - mn_now;
790 1109
791 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1110 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
792 return; /* all is well */ 1111 return; /* all is well */
793 1112
794 rt_now = ev_time (); 1113 ev_rt_now = ev_time ();
795 mn_now = get_clock (); 1114 mn_now = get_clock ();
796 now_floor = mn_now; 1115 now_floor = mn_now;
797 } 1116 }
798 1117
1118# if EV_PERIODICS
799 periodics_reschedule (EV_A); 1119 periodics_reschedule (EV_A);
1120# endif
800 /* no timer adjustment, as the monotonic clock doesn't jump */ 1121 /* no timer adjustment, as the monotonic clock doesn't jump */
801 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1122 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
802 } 1123 }
803 } 1124 }
804 else 1125 else
805#endif 1126#endif
806 { 1127 {
807 rt_now = ev_time (); 1128 ev_rt_now = ev_time ();
808 1129
809 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1130 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
810 { 1131 {
1132#if EV_PERIODICS
811 periodics_reschedule (EV_A); 1133 periodics_reschedule (EV_A);
1134#endif
812 1135
813 /* adjust timers. this is easy, as the offset is the same for all */ 1136 /* adjust timers. this is easy, as the offset is the same for all */
814 for (i = 0; i < timercnt; ++i) 1137 for (i = 0; i < timercnt; ++i)
815 timers [i]->at += rt_now - mn_now; 1138 ((WT)timers [i])->at += ev_rt_now - mn_now;
816 } 1139 }
817 1140
818 mn_now = rt_now; 1141 mn_now = ev_rt_now;
819 } 1142 }
820} 1143}
821 1144
822void 1145void
823ev_ref (EV_P) 1146ev_ref (EV_P)
846 { 1169 {
847 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1170 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
848 call_pending (EV_A); 1171 call_pending (EV_A);
849 } 1172 }
850 1173
1174 /* we might have forked, so reify kernel state if necessary */
1175 if (expect_false (postfork))
1176 loop_fork (EV_A);
1177
851 /* update fd-related kernel structures */ 1178 /* update fd-related kernel structures */
852 fd_reify (EV_A); 1179 fd_reify (EV_A);
853 1180
854 /* calculate blocking time */ 1181 /* calculate blocking time */
855 1182
856 /* we only need this for !monotonic clockor timers, but as we basically 1183 /* we only need this for !monotonic clock or timers, but as we basically
857 always have timers, we just calculate it always */ 1184 always have timers, we just calculate it always */
858#if EV_USE_MONOTONIC 1185#if EV_USE_MONOTONIC
859 if (expect_true (have_monotonic)) 1186 if (expect_true (have_monotonic))
860 time_update_monotonic (EV_A); 1187 time_update_monotonic (EV_A);
861 else 1188 else
862#endif 1189#endif
863 { 1190 {
864 rt_now = ev_time (); 1191 ev_rt_now = ev_time ();
865 mn_now = rt_now; 1192 mn_now = ev_rt_now;
866 } 1193 }
867 1194
868 if (flags & EVLOOP_NONBLOCK || idlecnt) 1195 if (flags & EVLOOP_NONBLOCK || idlecnt)
869 block = 0.; 1196 block = 0.;
870 else 1197 else
871 { 1198 {
872 block = MAX_BLOCKTIME; 1199 block = MAX_BLOCKTIME;
873 1200
874 if (timercnt) 1201 if (timercnt)
875 { 1202 {
876 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1203 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
877 if (block > to) block = to; 1204 if (block > to) block = to;
878 } 1205 }
879 1206
1207#if EV_PERIODICS
880 if (periodiccnt) 1208 if (periodiccnt)
881 { 1209 {
882 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1210 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
883 if (block > to) block = to; 1211 if (block > to) block = to;
884 } 1212 }
1213#endif
885 1214
886 if (block < 0.) block = 0.; 1215 if (block < 0.) block = 0.;
887 } 1216 }
888 1217
889 method_poll (EV_A_ block); 1218 method_poll (EV_A_ block);
890 1219
891 /* update rt_now, do magic */ 1220 /* update ev_rt_now, do magic */
892 time_update (EV_A); 1221 time_update (EV_A);
893 1222
894 /* queue pending timers and reschedule them */ 1223 /* queue pending timers and reschedule them */
895 timers_reify (EV_A); /* relative timers called last */ 1224 timers_reify (EV_A); /* relative timers called last */
1225#if EV_PERIODICS
896 periodics_reify (EV_A); /* absolute timers called first */ 1226 periodics_reify (EV_A); /* absolute timers called first */
1227#endif
897 1228
898 /* queue idle watchers unless io or timers are pending */ 1229 /* queue idle watchers unless io or timers are pending */
899 if (!pendingcnt) 1230 if (idlecnt && !any_pending (EV_A))
900 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1231 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
901 1232
902 /* queue check watchers, to be executed first */ 1233 /* queue check watchers, to be executed first */
903 if (checkcnt) 1234 if (checkcnt)
904 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1235 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979 return; 1310 return;
980 1311
981 assert (("ev_io_start called with negative fd", fd >= 0)); 1312 assert (("ev_io_start called with negative fd", fd >= 0));
982 1313
983 ev_start (EV_A_ (W)w, 1); 1314 ev_start (EV_A_ (W)w, 1);
984 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1315 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
985 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1316 wlist_add ((WL *)&anfds[fd].head, (WL)w);
986 1317
987 fd_change (EV_A_ fd); 1318 fd_change (EV_A_ fd);
988} 1319}
989 1320
992{ 1323{
993 ev_clear_pending (EV_A_ (W)w); 1324 ev_clear_pending (EV_A_ (W)w);
994 if (!ev_is_active (w)) 1325 if (!ev_is_active (w))
995 return; 1326 return;
996 1327
1328 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1329
997 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1330 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
998 ev_stop (EV_A_ (W)w); 1331 ev_stop (EV_A_ (W)w);
999 1332
1000 fd_change (EV_A_ w->fd); 1333 fd_change (EV_A_ w->fd);
1001} 1334}
1004ev_timer_start (EV_P_ struct ev_timer *w) 1337ev_timer_start (EV_P_ struct ev_timer *w)
1005{ 1338{
1006 if (ev_is_active (w)) 1339 if (ev_is_active (w))
1007 return; 1340 return;
1008 1341
1009 w->at += mn_now; 1342 ((WT)w)->at += mn_now;
1010 1343
1011 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1344 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012 1345
1013 ev_start (EV_A_ (W)w, ++timercnt); 1346 ev_start (EV_A_ (W)w, ++timercnt);
1014 array_needsize (timers, timermax, timercnt, ); 1347 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1015 timers [timercnt - 1] = w; 1348 timers [timercnt - 1] = w;
1016 upheap ((WT *)timers, timercnt - 1); 1349 upheap ((WT *)timers, timercnt - 1);
1350
1351 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1017} 1352}
1018 1353
1019void 1354void
1020ev_timer_stop (EV_P_ struct ev_timer *w) 1355ev_timer_stop (EV_P_ struct ev_timer *w)
1021{ 1356{
1022 ev_clear_pending (EV_A_ (W)w); 1357 ev_clear_pending (EV_A_ (W)w);
1023 if (!ev_is_active (w)) 1358 if (!ev_is_active (w))
1024 return; 1359 return;
1025 1360
1361 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1362
1026 if (w->active < timercnt--) 1363 if (((W)w)->active < timercnt--)
1027 { 1364 {
1028 timers [w->active - 1] = timers [timercnt]; 1365 timers [((W)w)->active - 1] = timers [timercnt];
1029 downheap ((WT *)timers, timercnt, w->active - 1); 1366 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1030 } 1367 }
1031 1368
1032 w->at = w->repeat; 1369 ((WT)w)->at -= mn_now;
1033 1370
1034 ev_stop (EV_A_ (W)w); 1371 ev_stop (EV_A_ (W)w);
1035} 1372}
1036 1373
1037void 1374void
1039{ 1376{
1040 if (ev_is_active (w)) 1377 if (ev_is_active (w))
1041 { 1378 {
1042 if (w->repeat) 1379 if (w->repeat)
1043 { 1380 {
1044 w->at = mn_now + w->repeat; 1381 ((WT)w)->at = mn_now + w->repeat;
1045 downheap ((WT *)timers, timercnt, w->active - 1); 1382 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1046 } 1383 }
1047 else 1384 else
1048 ev_timer_stop (EV_A_ w); 1385 ev_timer_stop (EV_A_ w);
1049 } 1386 }
1050 else if (w->repeat) 1387 else if (w->repeat)
1388 {
1389 w->at = w->repeat;
1051 ev_timer_start (EV_A_ w); 1390 ev_timer_start (EV_A_ w);
1391 }
1052} 1392}
1053 1393
1394#if EV_PERIODICS
1054void 1395void
1055ev_periodic_start (EV_P_ struct ev_periodic *w) 1396ev_periodic_start (EV_P_ struct ev_periodic *w)
1056{ 1397{
1057 if (ev_is_active (w)) 1398 if (ev_is_active (w))
1058 return; 1399 return;
1059 1400
1401 if (w->reschedule_cb)
1402 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1403 else if (w->interval)
1404 {
1060 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1405 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1061
1062 /* this formula differs from the one in periodic_reify because we do not always round up */ 1406 /* this formula differs from the one in periodic_reify because we do not always round up */
1063 if (w->interval)
1064 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1407 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1408 }
1065 1409
1066 ev_start (EV_A_ (W)w, ++periodiccnt); 1410 ev_start (EV_A_ (W)w, ++periodiccnt);
1067 array_needsize (periodics, periodicmax, periodiccnt, ); 1411 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1068 periodics [periodiccnt - 1] = w; 1412 periodics [periodiccnt - 1] = w;
1069 upheap ((WT *)periodics, periodiccnt - 1); 1413 upheap ((WT *)periodics, periodiccnt - 1);
1414
1415 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1070} 1416}
1071 1417
1072void 1418void
1073ev_periodic_stop (EV_P_ struct ev_periodic *w) 1419ev_periodic_stop (EV_P_ struct ev_periodic *w)
1074{ 1420{
1075 ev_clear_pending (EV_A_ (W)w); 1421 ev_clear_pending (EV_A_ (W)w);
1076 if (!ev_is_active (w)) 1422 if (!ev_is_active (w))
1077 return; 1423 return;
1078 1424
1425 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1426
1079 if (w->active < periodiccnt--) 1427 if (((W)w)->active < periodiccnt--)
1080 { 1428 {
1081 periodics [w->active - 1] = periodics [periodiccnt]; 1429 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1082 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1430 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1083 } 1431 }
1084 1432
1433 ev_stop (EV_A_ (W)w);
1434}
1435
1436void
1437ev_periodic_again (EV_P_ struct ev_periodic *w)
1438{
1439 /* TODO: use adjustheap and recalculation */
1440 ev_periodic_stop (EV_A_ w);
1441 ev_periodic_start (EV_A_ w);
1442}
1443#endif
1444
1445void
1446ev_idle_start (EV_P_ struct ev_idle *w)
1447{
1448 if (ev_is_active (w))
1449 return;
1450
1451 ev_start (EV_A_ (W)w, ++idlecnt);
1452 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1453 idles [idlecnt - 1] = w;
1454}
1455
1456void
1457ev_idle_stop (EV_P_ struct ev_idle *w)
1458{
1459 ev_clear_pending (EV_A_ (W)w);
1460 if (!ev_is_active (w))
1461 return;
1462
1463 idles [((W)w)->active - 1] = idles [--idlecnt];
1464 ev_stop (EV_A_ (W)w);
1465}
1466
1467void
1468ev_prepare_start (EV_P_ struct ev_prepare *w)
1469{
1470 if (ev_is_active (w))
1471 return;
1472
1473 ev_start (EV_A_ (W)w, ++preparecnt);
1474 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1475 prepares [preparecnt - 1] = w;
1476}
1477
1478void
1479ev_prepare_stop (EV_P_ struct ev_prepare *w)
1480{
1481 ev_clear_pending (EV_A_ (W)w);
1482 if (!ev_is_active (w))
1483 return;
1484
1485 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1486 ev_stop (EV_A_ (W)w);
1487}
1488
1489void
1490ev_check_start (EV_P_ struct ev_check *w)
1491{
1492 if (ev_is_active (w))
1493 return;
1494
1495 ev_start (EV_A_ (W)w, ++checkcnt);
1496 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1497 checks [checkcnt - 1] = w;
1498}
1499
1500void
1501ev_check_stop (EV_P_ struct ev_check *w)
1502{
1503 ev_clear_pending (EV_A_ (W)w);
1504 if (!ev_is_active (w))
1505 return;
1506
1507 checks [((W)w)->active - 1] = checks [--checkcnt];
1085 ev_stop (EV_A_ (W)w); 1508 ev_stop (EV_A_ (W)w);
1086} 1509}
1087 1510
1088#ifndef SA_RESTART 1511#ifndef SA_RESTART
1089# define SA_RESTART 0 1512# define SA_RESTART 0
1090#endif 1513#endif
1091 1514
1092void 1515void
1093ev_signal_start (EV_P_ struct ev_signal *w) 1516ev_signal_start (EV_P_ struct ev_signal *w)
1094{ 1517{
1518#if EV_MULTIPLICITY
1519 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1520#endif
1095 if (ev_is_active (w)) 1521 if (ev_is_active (w))
1096 return; 1522 return;
1097 1523
1098 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1524 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099 1525
1100 ev_start (EV_A_ (W)w, 1); 1526 ev_start (EV_A_ (W)w, 1);
1101 array_needsize (signals, signalmax, w->signum, signals_init); 1527 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1102 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1528 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1103 1529
1104 if (!w->next) 1530 if (!((WL)w)->next)
1105 { 1531 {
1532#if _WIN32
1533 signal (w->signum, sighandler);
1534#else
1106 struct sigaction sa; 1535 struct sigaction sa;
1107 sa.sa_handler = sighandler; 1536 sa.sa_handler = sighandler;
1108 sigfillset (&sa.sa_mask); 1537 sigfillset (&sa.sa_mask);
1109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1538 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110 sigaction (w->signum, &sa, 0); 1539 sigaction (w->signum, &sa, 0);
1540#endif
1111 } 1541 }
1112} 1542}
1113 1543
1114void 1544void
1115ev_signal_stop (EV_P_ struct ev_signal *w) 1545ev_signal_stop (EV_P_ struct ev_signal *w)
1124 if (!signals [w->signum - 1].head) 1554 if (!signals [w->signum - 1].head)
1125 signal (w->signum, SIG_DFL); 1555 signal (w->signum, SIG_DFL);
1126} 1556}
1127 1557
1128void 1558void
1129ev_idle_start (EV_P_ struct ev_idle *w)
1130{
1131 if (ev_is_active (w))
1132 return;
1133
1134 ev_start (EV_A_ (W)w, ++idlecnt);
1135 array_needsize (idles, idlemax, idlecnt, );
1136 idles [idlecnt - 1] = w;
1137}
1138
1139void
1140ev_idle_stop (EV_P_ struct ev_idle *w)
1141{
1142 ev_clear_pending (EV_A_ (W)w);
1143 if (ev_is_active (w))
1144 return;
1145
1146 idles [w->active - 1] = idles [--idlecnt];
1147 ev_stop (EV_A_ (W)w);
1148}
1149
1150void
1151ev_prepare_start (EV_P_ struct ev_prepare *w)
1152{
1153 if (ev_is_active (w))
1154 return;
1155
1156 ev_start (EV_A_ (W)w, ++preparecnt);
1157 array_needsize (prepares, preparemax, preparecnt, );
1158 prepares [preparecnt - 1] = w;
1159}
1160
1161void
1162ev_prepare_stop (EV_P_ struct ev_prepare *w)
1163{
1164 ev_clear_pending (EV_A_ (W)w);
1165 if (ev_is_active (w))
1166 return;
1167
1168 prepares [w->active - 1] = prepares [--preparecnt];
1169 ev_stop (EV_A_ (W)w);
1170}
1171
1172void
1173ev_check_start (EV_P_ struct ev_check *w)
1174{
1175 if (ev_is_active (w))
1176 return;
1177
1178 ev_start (EV_A_ (W)w, ++checkcnt);
1179 array_needsize (checks, checkmax, checkcnt, );
1180 checks [checkcnt - 1] = w;
1181}
1182
1183void
1184ev_check_stop (EV_P_ struct ev_check *w)
1185{
1186 ev_clear_pending (EV_A_ (W)w);
1187 if (ev_is_active (w))
1188 return;
1189
1190 checks [w->active - 1] = checks [--checkcnt];
1191 ev_stop (EV_A_ (W)w);
1192}
1193
1194void
1195ev_child_start (EV_P_ struct ev_child *w) 1559ev_child_start (EV_P_ struct ev_child *w)
1196{ 1560{
1561#if EV_MULTIPLICITY
1562 assert (("child watchers are only supported in the default loop", loop == default_loop));
1563#endif
1197 if (ev_is_active (w)) 1564 if (ev_is_active (w))
1198 return; 1565 return;
1199 1566
1200 ev_start (EV_A_ (W)w, 1); 1567 ev_start (EV_A_ (W)w, 1);
1201 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1568 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1203 1570
1204void 1571void
1205ev_child_stop (EV_P_ struct ev_child *w) 1572ev_child_stop (EV_P_ struct ev_child *w)
1206{ 1573{
1207 ev_clear_pending (EV_A_ (W)w); 1574 ev_clear_pending (EV_A_ (W)w);
1208 if (ev_is_active (w)) 1575 if (!ev_is_active (w))
1209 return; 1576 return;
1210 1577
1211 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1578 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212 ev_stop (EV_A_ (W)w); 1579 ev_stop (EV_A_ (W)w);
1213} 1580}
1228 void (*cb)(int revents, void *arg) = once->cb; 1595 void (*cb)(int revents, void *arg) = once->cb;
1229 void *arg = once->arg; 1596 void *arg = once->arg;
1230 1597
1231 ev_io_stop (EV_A_ &once->io); 1598 ev_io_stop (EV_A_ &once->io);
1232 ev_timer_stop (EV_A_ &once->to); 1599 ev_timer_stop (EV_A_ &once->to);
1233 free (once); 1600 ev_free (once);
1234 1601
1235 cb (revents, arg); 1602 cb (revents, arg);
1236} 1603}
1237 1604
1238static void 1605static void
1248} 1615}
1249 1616
1250void 1617void
1251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1618ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1252{ 1619{
1253 struct ev_once *once = malloc (sizeof (struct ev_once)); 1620 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1254 1621
1255 if (!once) 1622 if (!once)
1256 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1623 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1257 else 1624 else
1258 { 1625 {
1259 once->cb = cb; 1626 once->cb = cb;
1260 once->arg = arg; 1627 once->arg = arg;
1261 1628
1262 ev_watcher_init (&once->io, once_cb_io); 1629 ev_init (&once->io, once_cb_io);
1263 if (fd >= 0) 1630 if (fd >= 0)
1264 { 1631 {
1265 ev_io_set (&once->io, fd, events); 1632 ev_io_set (&once->io, fd, events);
1266 ev_io_start (EV_A_ &once->io); 1633 ev_io_start (EV_A_ &once->io);
1267 } 1634 }
1268 1635
1269 ev_watcher_init (&once->to, once_cb_to); 1636 ev_init (&once->to, once_cb_to);
1270 if (timeout >= 0.) 1637 if (timeout >= 0.)
1271 { 1638 {
1272 ev_timer_set (&once->to, timeout, 0.); 1639 ev_timer_set (&once->to, timeout, 0.);
1273 ev_timer_start (EV_A_ &once->to); 1640 ev_timer_start (EV_A_ &once->to);
1274 } 1641 }
1275 } 1642 }
1276} 1643}
1277 1644
1278/*****************************************************************************/ 1645#ifdef __cplusplus
1279
1280#if 0
1281
1282struct ev_io wio;
1283
1284static void
1285sin_cb (struct ev_io *w, int revents)
1286{
1287 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1288} 1646}
1289
1290static void
1291ocb (struct ev_timer *w, int revents)
1292{
1293 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1294 ev_timer_stop (w);
1295 ev_timer_start (w);
1296}
1297
1298static void
1299scb (struct ev_signal *w, int revents)
1300{
1301 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1302 ev_io_stop (&wio);
1303 ev_io_start (&wio);
1304}
1305
1306static void
1307gcb (struct ev_signal *w, int revents)
1308{
1309 fprintf (stderr, "generic %x\n", revents);
1310
1311}
1312
1313int main (void)
1314{
1315 ev_init (0);
1316
1317 ev_io_init (&wio, sin_cb, 0, EV_READ);
1318 ev_io_start (&wio);
1319
1320 struct ev_timer t[10000];
1321
1322#if 0
1323 int i;
1324 for (i = 0; i < 10000; ++i)
1325 {
1326 struct ev_timer *w = t + i;
1327 ev_watcher_init (w, ocb, i);
1328 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1329 ev_timer_start (w);
1330 if (drand48 () < 0.5)
1331 ev_timer_stop (w);
1332 }
1333#endif 1647#endif
1334 1648
1335 struct ev_timer t1;
1336 ev_timer_init (&t1, ocb, 5, 10);
1337 ev_timer_start (&t1);
1338
1339 struct ev_signal sig;
1340 ev_signal_init (&sig, scb, SIGQUIT);
1341 ev_signal_start (&sig);
1342
1343 struct ev_check cw;
1344 ev_check_init (&cw, gcb);
1345 ev_check_start (&cw);
1346
1347 struct ev_idle iw;
1348 ev_idle_init (&iw, gcb);
1349 ev_idle_start (&iw);
1350
1351 ev_loop (0);
1352
1353 return 0;
1354}
1355
1356#endif
1357
1358
1359
1360

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