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Comparing libev/ev.c (file contents):
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC vs.
Revision 1.117 by ayin, Thu Nov 15 17:15:56 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
179static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
180
181#ifdef _WIN32
182# include "ev_win32.c"
183#endif
184
118/*****************************************************************************/ 185/*****************************************************************************/
119 186
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
120typedef struct 235typedef struct
121{ 236{
122 struct ev_watcher_list *head; 237 WL head;
123 unsigned char events; 238 unsigned char events;
124 unsigned char reify; 239 unsigned char reify;
240#if EV_SELECT_IS_WINSOCKET
241 SOCKET handle;
242#endif
125} ANFD; 243} ANFD;
126 244
127typedef struct 245typedef struct
128{ 246{
129 W w; 247 W w;
130 int events; 248 int events;
131} ANPENDING; 249} ANPENDING;
132 250
133#ifdef EV_MULTIPLICITY 251#if EV_MULTIPLICITY
252
134struct ev_loop 253 struct ev_loop
135{ 254 {
255 ev_tstamp ev_rt_now;
256 #define ev_rt_now ((loop)->ev_rt_now)
136# define VAR(name,decl) decl 257 #define VAR(name,decl) decl;
137# include "ev_vars.h" 258 #include "ev_vars.h"
138}; 259 #undef VAR
260 };
261 #include "ev_wrap.h"
262
263 static struct ev_loop default_loop_struct;
264 struct ev_loop *ev_default_loop_ptr;
265
139#else 266#else
267
268 ev_tstamp ev_rt_now;
140# define VAR(name,decl) static decl 269 #define VAR(name,decl) static decl;
141# include "ev_vars.h" 270 #include "ev_vars.h"
142#endif
143#undef VAR 271 #undef VAR
272
273 static int ev_default_loop_ptr;
274
275#endif
144 276
145/*****************************************************************************/ 277/*****************************************************************************/
146 278
147inline ev_tstamp 279ev_tstamp
148ev_time (void) 280ev_time (void)
149{ 281{
150#if EV_USE_REALTIME 282#if EV_USE_REALTIME
151 struct timespec ts; 283 struct timespec ts;
152 clock_gettime (CLOCK_REALTIME, &ts); 284 clock_gettime (CLOCK_REALTIME, &ts);
171#endif 303#endif
172 304
173 return ev_time (); 305 return ev_time ();
174} 306}
175 307
308#if EV_MULTIPLICITY
176ev_tstamp 309ev_tstamp
177ev_now (EV_P) 310ev_now (EV_P)
178{ 311{
179 return rt_now; 312 return ev_rt_now;
180} 313}
314#endif
181 315
182#define array_roundsize(base,n) ((n) | 4 & ~3) 316#define array_roundsize(type,n) (((n) | 4) & ~3)
183 317
184#define array_needsize(base,cur,cnt,init) \ 318#define array_needsize(type,base,cur,cnt,init) \
185 if (expect_false ((cnt) > cur)) \ 319 if (expect_false ((cnt) > cur)) \
186 { \ 320 { \
187 int newcnt = cur; \ 321 int newcnt = cur; \
188 do \ 322 do \
189 { \ 323 { \
190 newcnt = array_roundsize (base, newcnt << 1); \ 324 newcnt = array_roundsize (type, newcnt << 1); \
191 } \ 325 } \
192 while ((cnt) > newcnt); \ 326 while ((cnt) > newcnt); \
193 \ 327 \
194 base = realloc (base, sizeof (*base) * (newcnt)); \ 328 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
195 init (base + cur, newcnt - cur); \ 329 init (base + cur, newcnt - cur); \
196 cur = newcnt; \ 330 cur = newcnt; \
197 } 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;
198 343
199/*****************************************************************************/ 344/*****************************************************************************/
200 345
201static void 346static void
202anfds_init (ANFD *base, int count) 347anfds_init (ANFD *base, int count)
209 354
210 ++base; 355 ++base;
211 } 356 }
212} 357}
213 358
214static void 359void
215event (EV_P_ W w, int events) 360ev_feed_event (EV_P_ void *w, int revents)
216{ 361{
362 W w_ = (W)w;
363
217 if (w->pending) 364 if (w_->pending)
218 { 365 {
219 pendings [ABSPRI (w)][w->pending - 1].events |= events; 366 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
220 return; 367 return;
221 } 368 }
222 369
223 w->pending = ++pendingcnt [ABSPRI (w)]; 370 w_->pending = ++pendingcnt [ABSPRI (w_)];
224 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);
225 pendings [ABSPRI (w)][w->pending - 1].w = w; 372 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
226 pendings [ABSPRI (w)][w->pending - 1].events = events; 373 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
227} 374}
228 375
229static void 376static void
230queue_events (EV_P_ W *events, int eventcnt, int type) 377queue_events (EV_P_ W *events, int eventcnt, int type)
231{ 378{
232 int i; 379 int i;
233 380
234 for (i = 0; i < eventcnt; ++i) 381 for (i = 0; i < eventcnt; ++i)
235 event (EV_A_ events [i], type); 382 ev_feed_event (EV_A_ events [i], type);
236} 383}
237 384
238static void 385inline void
239fd_event (EV_P_ int fd, int events) 386fd_event (EV_P_ int fd, int revents)
240{ 387{
241 ANFD *anfd = anfds + fd; 388 ANFD *anfd = anfds + fd;
242 struct ev_io *w; 389 struct ev_io *w;
243 390
244 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)
245 { 392 {
246 int ev = w->events & events; 393 int ev = w->events & revents;
247 394
248 if (ev) 395 if (ev)
249 event (EV_A_ (W)w, ev); 396 ev_feed_event (EV_A_ (W)w, ev);
250 } 397 }
398}
399
400void
401ev_feed_fd_event (EV_P_ int fd, int revents)
402{
403 fd_event (EV_A_ fd, revents);
251} 404}
252 405
253/*****************************************************************************/ 406/*****************************************************************************/
254 407
255static void 408static void
266 int events = 0; 419 int events = 0;
267 420
268 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)
269 events |= w->events; 422 events |= w->events;
270 423
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
271 anfd->reify = 0; 433 anfd->reify = 0;
272 434
273 if (anfd->events != events)
274 {
275 method_modify (EV_A_ fd, anfd->events, events); 435 method_modify (EV_A_ fd, anfd->events, events);
276 anfd->events = events; 436 anfd->events = events;
277 }
278 } 437 }
279 438
280 fdchangecnt = 0; 439 fdchangecnt = 0;
281} 440}
282 441
283static void 442static void
284fd_change (EV_P_ int fd) 443fd_change (EV_P_ int fd)
285{ 444{
286 if (anfds [fd].reify || fdchangecnt < 0) 445 if (anfds [fd].reify)
287 return; 446 return;
288 447
289 anfds [fd].reify = 1; 448 anfds [fd].reify = 1;
290 449
291 ++fdchangecnt; 450 ++fdchangecnt;
292 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 451 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
293 fdchanges [fdchangecnt - 1] = fd; 452 fdchanges [fdchangecnt - 1] = fd;
294} 453}
295 454
296static void 455static void
297fd_kill (EV_P_ int fd) 456fd_kill (EV_P_ int fd)
299 struct ev_io *w; 458 struct ev_io *w;
300 459
301 while ((w = (struct ev_io *)anfds [fd].head)) 460 while ((w = (struct ev_io *)anfds [fd].head))
302 { 461 {
303 ev_io_stop (EV_A_ w); 462 ev_io_stop (EV_A_ w);
304 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);
305 } 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
306} 475}
307 476
308/* called on EBADF to verify fds */ 477/* called on EBADF to verify fds */
309static void 478static void
310fd_ebadf (EV_P) 479fd_ebadf (EV_P)
311{ 480{
312 int fd; 481 int fd;
313 482
314 for (fd = 0; fd < anfdmax; ++fd) 483 for (fd = 0; fd < anfdmax; ++fd)
315 if (anfds [fd].events) 484 if (anfds [fd].events)
316 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 485 if (!fd_valid (fd) == -1 && errno == EBADF)
317 fd_kill (EV_A_ fd); 486 fd_kill (EV_A_ fd);
318} 487}
319 488
320/* 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 */
321static void 490static void
322fd_enomem (EV_P) 491fd_enomem (EV_P)
323{ 492{
324 int fd = anfdmax; 493 int fd;
325 494
326 while (fd--) 495 for (fd = anfdmax; fd--; )
327 if (anfds [fd].events) 496 if (anfds [fd].events)
328 { 497 {
329 close (fd);
330 fd_kill (EV_A_ fd); 498 fd_kill (EV_A_ fd);
331 return; 499 return;
332 } 500 }
333} 501}
334 502
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
335/*****************************************************************************/ 518/*****************************************************************************/
336 519
337static void 520static void
338upheap (WT *timers, int k) 521upheap (WT *heap, int k)
339{ 522{
340 WT w = timers [k]; 523 WT w = heap [k];
341 524
342 while (k && timers [k >> 1]->at > w->at) 525 while (k && heap [k >> 1]->at > w->at)
343 { 526 {
344 timers [k] = timers [k >> 1]; 527 heap [k] = heap [k >> 1];
345 timers [k]->active = k + 1; 528 ((W)heap [k])->active = k + 1;
346 k >>= 1; 529 k >>= 1;
347 } 530 }
348 531
349 timers [k] = w; 532 heap [k] = w;
350 timers [k]->active = k + 1; 533 ((W)heap [k])->active = k + 1;
351 534
352} 535}
353 536
354static void 537static void
355downheap (WT *timers, int N, int k) 538downheap (WT *heap, int N, int k)
356{ 539{
357 WT w = timers [k]; 540 WT w = heap [k];
358 541
359 while (k < (N >> 1)) 542 while (k < (N >> 1))
360 { 543 {
361 int j = k << 1; 544 int j = k << 1;
362 545
363 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 546 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364 ++j; 547 ++j;
365 548
366 if (w->at <= timers [j]->at) 549 if (w->at <= heap [j]->at)
367 break; 550 break;
368 551
369 timers [k] = timers [j]; 552 heap [k] = heap [j];
370 timers [k]->active = k + 1; 553 ((W)heap [k])->active = k + 1;
371 k = j; 554 k = j;
372 } 555 }
373 556
374 timers [k] = w; 557 heap [k] = w;
375 timers [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);
376} 566}
377 567
378/*****************************************************************************/ 568/*****************************************************************************/
379 569
380typedef struct 570typedef struct
381{ 571{
382 struct ev_watcher_list *head; 572 WL head;
383 sig_atomic_t volatile gotsig; 573 sig_atomic_t volatile gotsig;
384} ANSIG; 574} ANSIG;
385 575
386static ANSIG *signals; 576static ANSIG *signals;
387static int signalmax; 577static int signalmax;
388 578
389static int sigpipe [2]; 579static int sigpipe [2];
390static sig_atomic_t volatile gotsig; 580static sig_atomic_t volatile gotsig;
581static struct ev_io sigev;
391 582
392static void 583static void
393signals_init (ANSIG *base, int count) 584signals_init (ANSIG *base, int count)
394{ 585{
395 while (count--) 586 while (count--)
402} 593}
403 594
404static void 595static void
405sighandler (int signum) 596sighandler (int signum)
406{ 597{
598#if _WIN32
599 signal (signum, sighandler);
600#endif
601
407 signals [signum - 1].gotsig = 1; 602 signals [signum - 1].gotsig = 1;
408 603
409 if (!gotsig) 604 if (!gotsig)
410 { 605 {
411 int old_errno = errno; 606 int old_errno = errno;
413 write (sigpipe [1], &signum, 1); 608 write (sigpipe [1], &signum, 1);
414 errno = old_errno; 609 errno = old_errno;
415 } 610 }
416} 611}
417 612
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 == ev_default_loop_ptr));
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
418static void 633static void
419sigcb (EV_P_ struct ev_io *iow, int revents) 634sigcb (EV_P_ struct ev_io *iow, int revents)
420{ 635{
421 struct ev_watcher_list *w;
422 int signum; 636 int signum;
423 637
424 read (sigpipe [0], &revents, 1); 638 read (sigpipe [0], &revents, 1);
425 gotsig = 0; 639 gotsig = 0;
426 640
427 for (signum = signalmax; signum--; ) 641 for (signum = signalmax; signum--; )
428 if (signals [signum].gotsig) 642 if (signals [signum].gotsig)
429 { 643 ev_feed_signal_event (EV_A_ signum + 1);
430 signals [signum].gotsig = 0; 644}
431 645
432 for (w = signals [signum].head; w; w = w->next) 646inline void
433 event (EV_A_ (W)w, EV_SIGNAL); 647fd_intern (int fd)
434 } 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
435} 656}
436 657
437static void 658static void
438siginit (EV_P) 659siginit (EV_P)
439{ 660{
440#ifndef WIN32 661 fd_intern (sigpipe [0]);
441 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 662 fd_intern (sigpipe [1]);
442 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
443
444 /* rather than sort out wether we really need nb, set it */
445 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
446 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
447#endif
448 663
449 ev_io_set (&sigev, sigpipe [0], EV_READ); 664 ev_io_set (&sigev, sigpipe [0], EV_READ);
450 ev_io_start (&sigev); 665 ev_io_start (EV_A_ &sigev);
451 ev_unref (EV_A); /* child watcher should not keep loop alive */ 666 ev_unref (EV_A); /* child watcher should not keep loop alive */
452} 667}
453 668
454/*****************************************************************************/ 669/*****************************************************************************/
455 670
671static struct ev_child *childs [PID_HASHSIZE];
672
456#ifndef WIN32 673#ifndef _WIN32
674
675static struct ev_signal childev;
457 676
458#ifndef WCONTINUED 677#ifndef WCONTINUED
459# define WCONTINUED 0 678# define WCONTINUED 0
460#endif 679#endif
461 680
465 struct ev_child *w; 684 struct ev_child *w;
466 685
467 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)
468 if (w->pid == pid || !w->pid) 687 if (w->pid == pid || !w->pid)
469 { 688 {
470 w->priority = sw->priority; /* need to do it *now* */ 689 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
471 w->rpid = pid; 690 w->rpid = pid;
472 w->rstatus = status; 691 w->rstatus = status;
473 event (EV_A_ (W)w, EV_CHILD); 692 ev_feed_event (EV_A_ (W)w, EV_CHILD);
474 } 693 }
475} 694}
476 695
477static void 696static void
478childcb (EV_P_ struct ev_signal *sw, int revents) 697childcb (EV_P_ struct ev_signal *sw, int revents)
480 int pid, status; 699 int pid, status;
481 700
482 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 701 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
483 { 702 {
484 /* 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 */
485 event (EV_A_ (W)sw, EV_SIGNAL); 704 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
486 705
487 child_reap (EV_A_ sw, pid, pid, status); 706 child_reap (EV_A_ sw, pid, pid, status);
488 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 */
489 } 708 }
490} 709}
497# include "ev_kqueue.c" 716# include "ev_kqueue.c"
498#endif 717#endif
499#if EV_USE_EPOLL 718#if EV_USE_EPOLL
500# include "ev_epoll.c" 719# include "ev_epoll.c"
501#endif 720#endif
502#if EV_USEV_POLL 721#if EV_USE_POLL
503# include "ev_poll.c" 722# include "ev_poll.c"
504#endif 723#endif
505#if EV_USE_SELECT 724#if EV_USE_SELECT
506# include "ev_select.c" 725# include "ev_select.c"
507#endif 726#endif
520 739
521/* 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 */
522static int 741static int
523enable_secure (void) 742enable_secure (void)
524{ 743{
525#ifdef WIN32 744#ifdef _WIN32
526 return 0; 745 return 0;
527#else 746#else
528 return getuid () != geteuid () 747 return getuid () != geteuid ()
529 || getgid () != getegid (); 748 || getgid () != getegid ();
530#endif 749#endif
531} 750}
532 751
533int 752unsigned int
534ev_method (EV_P) 753ev_method (EV_P)
535{ 754{
536 return method; 755 return method;
537} 756}
538 757
539int 758static void
540ev_init (EV_P_ int methods) 759loop_init (EV_P_ unsigned int flags)
541{ 760{
542#ifdef EV_MULTIPLICITY
543 memset (loop, 0, sizeof (struct ev_loop));
544#endif
545
546 if (!method) 761 if (!method)
547 { 762 {
548#if EV_USE_MONOTONIC 763#if EV_USE_MONOTONIC
549 { 764 {
550 struct timespec ts; 765 struct timespec ts;
551 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 766 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
552 have_monotonic = 1; 767 have_monotonic = 1;
553 } 768 }
554#endif 769#endif
555 770
556 rt_now = ev_time (); 771 ev_rt_now = ev_time ();
557 mn_now = get_clock (); 772 mn_now = get_clock ();
558 now_floor = mn_now; 773 now_floor = mn_now;
559 diff = rt_now - mn_now; 774 rtmn_diff = ev_rt_now - mn_now;
560 775
561 if (pipe (sigpipe)) 776 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
562 return 0; 777 flags = atoi (getenv ("LIBEV_FLAGS"));
563 778
564 if (methods == EVMETHOD_AUTO) 779 if (!(flags & 0x0000ffff))
565 if (!enable_secure () && getenv ("LIBmethodS")) 780 flags |= 0x0000ffff;
566 methods = atoi (getenv ("LIBmethodS"));
567 else
568 methods = EVMETHOD_ANY;
569 781
570 method = 0; 782 method = 0;
571#if EV_USE_KQUEUE 783#if EV_USE_KQUEUE
572 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 784 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
573#endif 785#endif
574#if EV_USE_EPOLL 786#if EV_USE_EPOLL
575 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 787 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
576#endif 788#endif
577#if EV_USEV_POLL 789#if EV_USE_POLL
578 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 790 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
579#endif 791#endif
580#if EV_USE_SELECT 792#if EV_USE_SELECT
581 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 793 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
582#endif 794#endif
583 795
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 *
896ev_default_loop_ (unsigned int flags)
897#else
898int
899ev_default_loop (unsigned int flags)
900#endif
901{
902 if (sigpipe [0] == sigpipe [1])
903 if (pipe (sigpipe))
904 return 0;
905
906 if (!ev_default_loop_ptr)
907 {
908#if EV_MULTIPLICITY
909 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
910#else
911 ev_default_loop_ptr = 1;
912#endif
913
914 loop_init (EV_A_ flags);
915
584 if (method) 916 if (ev_method (EV_A))
585 { 917 {
586 ev_watcher_init (&sigev, sigcb);
587 ev_set_priority (&sigev, EV_MAXPRI);
588 siginit (EV_A); 918 siginit (EV_A);
589 919
590#ifndef WIN32 920#ifndef _WIN32
591 ev_signal_init (&childev, childcb, SIGCHLD); 921 ev_signal_init (&childev, childcb, SIGCHLD);
592 ev_set_priority (&childev, EV_MAXPRI); 922 ev_set_priority (&childev, EV_MAXPRI);
593 ev_signal_start (EV_A_ &childev); 923 ev_signal_start (EV_A_ &childev);
594 ev_unref (EV_A); /* child watcher should not keep loop alive */ 924 ev_unref (EV_A); /* child watcher should not keep loop alive */
595#endif 925#endif
596 } 926 }
927 else
928 ev_default_loop_ptr = 0;
597 } 929 }
598 930
599 return method; 931 return ev_default_loop_ptr;
932}
933
934void
935ev_default_destroy (void)
936{
937#if EV_MULTIPLICITY
938 struct ev_loop *loop = ev_default_loop_ptr;
939#endif
940
941#ifndef _WIN32
942 ev_ref (EV_A); /* child watcher */
943 ev_signal_stop (EV_A_ &childev);
944#endif
945
946 ev_ref (EV_A); /* signal watcher */
947 ev_io_stop (EV_A_ &sigev);
948
949 close (sigpipe [0]); sigpipe [0] = 0;
950 close (sigpipe [1]); sigpipe [1] = 0;
951
952 loop_destroy (EV_A);
953}
954
955void
956ev_default_fork (void)
957{
958#if EV_MULTIPLICITY
959 struct ev_loop *loop = ev_default_loop_ptr;
960#endif
961
962 if (method)
963 postfork = 1;
600} 964}
601 965
602/*****************************************************************************/ 966/*****************************************************************************/
603 967
604void 968static int
605ev_fork_prepare (void) 969any_pending (EV_P)
606{ 970{
607 /* nop */ 971 int pri;
608}
609 972
610void 973 for (pri = NUMPRI; pri--; )
611ev_fork_parent (void) 974 if (pendingcnt [pri])
612{ 975 return 1;
613 /* nop */
614}
615 976
616void 977 return 0;
617ev_fork_child (void)
618{
619#if EV_USE_EPOLL
620 if (method == EVMETHOD_EPOLL)
621 epoll_postfork_child ();
622#endif
623
624 ev_io_stop (&sigev);
625 close (sigpipe [0]);
626 close (sigpipe [1]);
627 pipe (sigpipe);
628 siginit ();
629} 978}
630
631/*****************************************************************************/
632 979
633static void 980static void
634call_pending (EV_P) 981call_pending (EV_P)
635{ 982{
636 int pri; 983 int pri;
641 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 988 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
642 989
643 if (p->w) 990 if (p->w)
644 { 991 {
645 p->w->pending = 0; 992 p->w->pending = 0;
646 p->w->cb (EV_A_ p->w, p->events); 993 EV_CB_INVOKE (p->w, p->events);
647 } 994 }
648 } 995 }
649} 996}
650 997
651static void 998static void
652timers_reify (EV_P) 999timers_reify (EV_P)
653{ 1000{
654 while (timercnt && timers [0]->at <= mn_now) 1001 while (timercnt && ((WT)timers [0])->at <= mn_now)
655 { 1002 {
656 struct ev_timer *w = timers [0]; 1003 struct ev_timer *w = timers [0];
1004
1005 assert (("inactive timer on timer heap detected", ev_is_active (w)));
657 1006
658 /* first reschedule or stop timer */ 1007 /* first reschedule or stop timer */
659 if (w->repeat) 1008 if (w->repeat)
660 { 1009 {
661 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1010 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1011
662 w->at = mn_now + w->repeat; 1012 ((WT)w)->at += w->repeat;
1013 if (((WT)w)->at < mn_now)
1014 ((WT)w)->at = mn_now;
1015
663 downheap ((WT *)timers, timercnt, 0); 1016 downheap ((WT *)timers, timercnt, 0);
664 } 1017 }
665 else 1018 else
666 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1019 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
667 1020
668 event ((W)w, EV_TIMEOUT); 1021 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
669 } 1022 }
670} 1023}
671 1024
1025#if EV_PERIODICS
672static void 1026static void
673periodics_reify (EV_P) 1027periodics_reify (EV_P)
674{ 1028{
675 while (periodiccnt && periodics [0]->at <= rt_now) 1029 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
676 { 1030 {
677 struct ev_periodic *w = periodics [0]; 1031 struct ev_periodic *w = periodics [0];
678 1032
1033 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1034
679 /* first reschedule or stop timer */ 1035 /* first reschedule or stop timer */
680 if (w->interval) 1036 if (w->reschedule_cb)
681 { 1037 {
1038 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1039 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1040 downheap ((WT *)periodics, periodiccnt, 0);
1041 }
1042 else if (w->interval)
1043 {
682 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1044 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
683 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1045 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
684 downheap ((WT *)periodics, periodiccnt, 0); 1046 downheap ((WT *)periodics, periodiccnt, 0);
685 } 1047 }
686 else 1048 else
687 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1049 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
688 1050
689 event (EV_A_ (W)w, EV_PERIODIC); 1051 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
690 } 1052 }
691} 1053}
692 1054
693static void 1055static void
694periodics_reschedule (EV_P_ ev_tstamp diff) 1056periodics_reschedule (EV_P)
695{ 1057{
696 int i; 1058 int i;
697 1059
698 /* adjust periodics after time jump */ 1060 /* adjust periodics after time jump */
699 for (i = 0; i < periodiccnt; ++i) 1061 for (i = 0; i < periodiccnt; ++i)
700 { 1062 {
701 struct ev_periodic *w = periodics [i]; 1063 struct ev_periodic *w = periodics [i];
702 1064
1065 if (w->reschedule_cb)
1066 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
703 if (w->interval) 1067 else if (w->interval)
704 {
705 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1068 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
706
707 if (fabs (diff) >= 1e-4)
708 {
709 ev_periodic_stop (EV_A_ w);
710 ev_periodic_start (EV_A_ w);
711
712 i = 0; /* restart loop, inefficient, but time jumps should be rare */
713 }
714 }
715 } 1069 }
1070
1071 /* now rebuild the heap */
1072 for (i = periodiccnt >> 1; i--; )
1073 downheap ((WT *)periodics, periodiccnt, i);
716} 1074}
1075#endif
717 1076
718inline int 1077inline int
719time_update_monotonic (EV_P) 1078time_update_monotonic (EV_P)
720{ 1079{
721 mn_now = get_clock (); 1080 mn_now = get_clock ();
722 1081
723 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1082 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
724 { 1083 {
725 rt_now = mn_now + diff; 1084 ev_rt_now = rtmn_diff + mn_now;
726 return 0; 1085 return 0;
727 } 1086 }
728 else 1087 else
729 { 1088 {
730 now_floor = mn_now; 1089 now_floor = mn_now;
731 rt_now = ev_time (); 1090 ev_rt_now = ev_time ();
732 return 1; 1091 return 1;
733 } 1092 }
734} 1093}
735 1094
736static void 1095static void
741#if EV_USE_MONOTONIC 1100#if EV_USE_MONOTONIC
742 if (expect_true (have_monotonic)) 1101 if (expect_true (have_monotonic))
743 { 1102 {
744 if (time_update_monotonic (EV_A)) 1103 if (time_update_monotonic (EV_A))
745 { 1104 {
746 ev_tstamp odiff = diff; 1105 ev_tstamp odiff = rtmn_diff;
747 1106
748 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1107 for (i = 4; --i; ) /* loop a few times, before making important decisions */
749 { 1108 {
750 diff = rt_now - mn_now; 1109 rtmn_diff = ev_rt_now - mn_now;
751 1110
752 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1111 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
753 return; /* all is well */ 1112 return; /* all is well */
754 1113
755 rt_now = ev_time (); 1114 ev_rt_now = ev_time ();
756 mn_now = get_clock (); 1115 mn_now = get_clock ();
757 now_floor = mn_now; 1116 now_floor = mn_now;
758 } 1117 }
759 1118
1119# if EV_PERIODICS
760 periodics_reschedule (EV_A_ diff - odiff); 1120 periodics_reschedule (EV_A);
1121# endif
761 /* no timer adjustment, as the monotonic clock doesn't jump */ 1122 /* no timer adjustment, as the monotonic clock doesn't jump */
1123 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
762 } 1124 }
763 } 1125 }
764 else 1126 else
765#endif 1127#endif
766 { 1128 {
767 rt_now = ev_time (); 1129 ev_rt_now = ev_time ();
768 1130
769 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1131 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
770 { 1132 {
1133#if EV_PERIODICS
771 periodics_reschedule (EV_A_ rt_now - mn_now); 1134 periodics_reschedule (EV_A);
1135#endif
772 1136
773 /* adjust timers. this is easy, as the offset is the same for all */ 1137 /* adjust timers. this is easy, as the offset is the same for all */
774 for (i = 0; i < timercnt; ++i) 1138 for (i = 0; i < timercnt; ++i)
775 timers [i]->at += diff; 1139 ((WT)timers [i])->at += ev_rt_now - mn_now;
776 } 1140 }
777 1141
778 mn_now = rt_now; 1142 mn_now = ev_rt_now;
779 } 1143 }
780} 1144}
781 1145
782void 1146void
783ev_ref (EV_P) 1147ev_ref (EV_P)
797ev_loop (EV_P_ int flags) 1161ev_loop (EV_P_ int flags)
798{ 1162{
799 double block; 1163 double block;
800 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1164 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
801 1165
802 do 1166 while (activecnt)
803 { 1167 {
804 /* queue check watchers (and execute them) */ 1168 /* queue check watchers (and execute them) */
805 if (expect_false (preparecnt)) 1169 if (expect_false (preparecnt))
806 { 1170 {
807 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1171 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
808 call_pending (EV_A); 1172 call_pending (EV_A);
809 } 1173 }
810 1174
1175 /* we might have forked, so reify kernel state if necessary */
1176 if (expect_false (postfork))
1177 loop_fork (EV_A);
1178
811 /* update fd-related kernel structures */ 1179 /* update fd-related kernel structures */
812 fd_reify (EV_A); 1180 fd_reify (EV_A);
813 1181
814 /* calculate blocking time */ 1182 /* calculate blocking time */
815 1183
816 /* we only need this for !monotonic clockor timers, but as we basically 1184 /* we only need this for !monotonic clock or timers, but as we basically
817 always have timers, we just calculate it always */ 1185 always have timers, we just calculate it always */
818#if EV_USE_MONOTONIC 1186#if EV_USE_MONOTONIC
819 if (expect_true (have_monotonic)) 1187 if (expect_true (have_monotonic))
820 time_update_monotonic (EV_A); 1188 time_update_monotonic (EV_A);
821 else 1189 else
822#endif 1190#endif
823 { 1191 {
824 rt_now = ev_time (); 1192 ev_rt_now = ev_time ();
825 mn_now = rt_now; 1193 mn_now = ev_rt_now;
826 } 1194 }
827 1195
828 if (flags & EVLOOP_NONBLOCK || idlecnt) 1196 if (flags & EVLOOP_NONBLOCK || idlecnt)
829 block = 0.; 1197 block = 0.;
830 else 1198 else
831 { 1199 {
832 block = MAX_BLOCKTIME; 1200 block = MAX_BLOCKTIME;
833 1201
834 if (timercnt) 1202 if (timercnt)
835 { 1203 {
836 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1204 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
837 if (block > to) block = to; 1205 if (block > to) block = to;
838 } 1206 }
839 1207
1208#if EV_PERIODICS
840 if (periodiccnt) 1209 if (periodiccnt)
841 { 1210 {
842 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1211 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
843 if (block > to) block = to; 1212 if (block > to) block = to;
844 } 1213 }
1214#endif
845 1215
846 if (block < 0.) block = 0.; 1216 if (block < 0.) block = 0.;
847 } 1217 }
848 1218
849 method_poll (EV_A_ block); 1219 method_poll (EV_A_ block);
850 1220
851 /* update rt_now, do magic */ 1221 /* update ev_rt_now, do magic */
852 time_update (EV_A); 1222 time_update (EV_A);
853 1223
854 /* queue pending timers and reschedule them */ 1224 /* queue pending timers and reschedule them */
855 timers_reify (EV_A); /* relative timers called last */ 1225 timers_reify (EV_A); /* relative timers called last */
1226#if EV_PERIODICS
856 periodics_reify (EV_A); /* absolute timers called first */ 1227 periodics_reify (EV_A); /* absolute timers called first */
1228#endif
857 1229
858 /* queue idle watchers unless io or timers are pending */ 1230 /* queue idle watchers unless io or timers are pending */
859 if (!pendingcnt) 1231 if (idlecnt && !any_pending (EV_A))
860 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1232 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
861 1233
862 /* queue check watchers, to be executed first */ 1234 /* queue check watchers, to be executed first */
863 if (checkcnt) 1235 if (checkcnt)
864 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1236 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
865 1237
866 call_pending (EV_A); 1238 call_pending (EV_A);
1239
1240 if (loop_done)
1241 break;
867 } 1242 }
868 while (activecnt && !loop_done);
869 1243
870 if (loop_done != 2) 1244 if (loop_done != 2)
871 loop_done = 0; 1245 loop_done = 0;
872} 1246}
873 1247
939 return; 1313 return;
940 1314
941 assert (("ev_io_start called with negative fd", fd >= 0)); 1315 assert (("ev_io_start called with negative fd", fd >= 0));
942 1316
943 ev_start (EV_A_ (W)w, 1); 1317 ev_start (EV_A_ (W)w, 1);
944 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1318 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
945 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1319 wlist_add ((WL *)&anfds[fd].head, (WL)w);
946 1320
947 fd_change (EV_A_ fd); 1321 fd_change (EV_A_ fd);
948} 1322}
949 1323
952{ 1326{
953 ev_clear_pending (EV_A_ (W)w); 1327 ev_clear_pending (EV_A_ (W)w);
954 if (!ev_is_active (w)) 1328 if (!ev_is_active (w))
955 return; 1329 return;
956 1330
1331 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1332
957 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1333 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
958 ev_stop (EV_A_ (W)w); 1334 ev_stop (EV_A_ (W)w);
959 1335
960 fd_change (EV_A_ w->fd); 1336 fd_change (EV_A_ w->fd);
961} 1337}
964ev_timer_start (EV_P_ struct ev_timer *w) 1340ev_timer_start (EV_P_ struct ev_timer *w)
965{ 1341{
966 if (ev_is_active (w)) 1342 if (ev_is_active (w))
967 return; 1343 return;
968 1344
969 w->at += mn_now; 1345 ((WT)w)->at += mn_now;
970 1346
971 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1347 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
972 1348
973 ev_start (EV_A_ (W)w, ++timercnt); 1349 ev_start (EV_A_ (W)w, ++timercnt);
974 array_needsize (timers, timermax, timercnt, ); 1350 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
975 timers [timercnt - 1] = w; 1351 timers [timercnt - 1] = w;
976 upheap ((WT *)timers, timercnt - 1); 1352 upheap ((WT *)timers, timercnt - 1);
1353
1354 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
977} 1355}
978 1356
979void 1357void
980ev_timer_stop (EV_P_ struct ev_timer *w) 1358ev_timer_stop (EV_P_ struct ev_timer *w)
981{ 1359{
982 ev_clear_pending (EV_A_ (W)w); 1360 ev_clear_pending (EV_A_ (W)w);
983 if (!ev_is_active (w)) 1361 if (!ev_is_active (w))
984 return; 1362 return;
985 1363
1364 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1365
986 if (w->active < timercnt--) 1366 if (((W)w)->active < timercnt--)
987 { 1367 {
988 timers [w->active - 1] = timers [timercnt]; 1368 timers [((W)w)->active - 1] = timers [timercnt];
989 downheap ((WT *)timers, timercnt, w->active - 1); 1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
990 } 1370 }
991 1371
992 w->at = w->repeat; 1372 ((WT)w)->at -= mn_now;
993 1373
994 ev_stop (EV_A_ (W)w); 1374 ev_stop (EV_A_ (W)w);
995} 1375}
996 1376
997void 1377void
999{ 1379{
1000 if (ev_is_active (w)) 1380 if (ev_is_active (w))
1001 { 1381 {
1002 if (w->repeat) 1382 if (w->repeat)
1003 { 1383 {
1004 w->at = mn_now + w->repeat; 1384 ((WT)w)->at = mn_now + w->repeat;
1005 downheap ((WT *)timers, timercnt, w->active - 1); 1385 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1006 } 1386 }
1007 else 1387 else
1008 ev_timer_stop (EV_A_ w); 1388 ev_timer_stop (EV_A_ w);
1009 } 1389 }
1010 else if (w->repeat) 1390 else if (w->repeat)
1391 {
1392 w->at = w->repeat;
1011 ev_timer_start (EV_A_ w); 1393 ev_timer_start (EV_A_ w);
1394 }
1012} 1395}
1013 1396
1397#if EV_PERIODICS
1014void 1398void
1015ev_periodic_start (EV_P_ struct ev_periodic *w) 1399ev_periodic_start (EV_P_ struct ev_periodic *w)
1016{ 1400{
1017 if (ev_is_active (w)) 1401 if (ev_is_active (w))
1018 return; 1402 return;
1019 1403
1404 if (w->reschedule_cb)
1405 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1406 else if (w->interval)
1407 {
1020 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1408 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1021
1022 /* this formula differs from the one in periodic_reify because we do not always round up */ 1409 /* this formula differs from the one in periodic_reify because we do not always round up */
1023 if (w->interval)
1024 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1410 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1411 }
1025 1412
1026 ev_start (EV_A_ (W)w, ++periodiccnt); 1413 ev_start (EV_A_ (W)w, ++periodiccnt);
1027 array_needsize (periodics, periodicmax, periodiccnt, ); 1414 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1028 periodics [periodiccnt - 1] = w; 1415 periodics [periodiccnt - 1] = w;
1029 upheap ((WT *)periodics, periodiccnt - 1); 1416 upheap ((WT *)periodics, periodiccnt - 1);
1417
1418 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1030} 1419}
1031 1420
1032void 1421void
1033ev_periodic_stop (EV_P_ struct ev_periodic *w) 1422ev_periodic_stop (EV_P_ struct ev_periodic *w)
1034{ 1423{
1035 ev_clear_pending (EV_A_ (W)w); 1424 ev_clear_pending (EV_A_ (W)w);
1036 if (!ev_is_active (w)) 1425 if (!ev_is_active (w))
1037 return; 1426 return;
1038 1427
1428 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1429
1039 if (w->active < periodiccnt--) 1430 if (((W)w)->active < periodiccnt--)
1040 { 1431 {
1041 periodics [w->active - 1] = periodics [periodiccnt]; 1432 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1042 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1433 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1043 } 1434 }
1044 1435
1436 ev_stop (EV_A_ (W)w);
1437}
1438
1439void
1440ev_periodic_again (EV_P_ struct ev_periodic *w)
1441{
1442 /* TODO: use adjustheap and recalculation */
1443 ev_periodic_stop (EV_A_ w);
1444 ev_periodic_start (EV_A_ w);
1445}
1446#endif
1447
1448void
1449ev_idle_start (EV_P_ struct ev_idle *w)
1450{
1451 if (ev_is_active (w))
1452 return;
1453
1454 ev_start (EV_A_ (W)w, ++idlecnt);
1455 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1456 idles [idlecnt - 1] = w;
1457}
1458
1459void
1460ev_idle_stop (EV_P_ struct ev_idle *w)
1461{
1462 ev_clear_pending (EV_A_ (W)w);
1463 if (!ev_is_active (w))
1464 return;
1465
1466 idles [((W)w)->active - 1] = idles [--idlecnt];
1467 ev_stop (EV_A_ (W)w);
1468}
1469
1470void
1471ev_prepare_start (EV_P_ struct ev_prepare *w)
1472{
1473 if (ev_is_active (w))
1474 return;
1475
1476 ev_start (EV_A_ (W)w, ++preparecnt);
1477 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1478 prepares [preparecnt - 1] = w;
1479}
1480
1481void
1482ev_prepare_stop (EV_P_ struct ev_prepare *w)
1483{
1484 ev_clear_pending (EV_A_ (W)w);
1485 if (!ev_is_active (w))
1486 return;
1487
1488 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1489 ev_stop (EV_A_ (W)w);
1490}
1491
1492void
1493ev_check_start (EV_P_ struct ev_check *w)
1494{
1495 if (ev_is_active (w))
1496 return;
1497
1498 ev_start (EV_A_ (W)w, ++checkcnt);
1499 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1500 checks [checkcnt - 1] = w;
1501}
1502
1503void
1504ev_check_stop (EV_P_ struct ev_check *w)
1505{
1506 ev_clear_pending (EV_A_ (W)w);
1507 if (!ev_is_active (w))
1508 return;
1509
1510 checks [((W)w)->active - 1] = checks [--checkcnt];
1045 ev_stop (EV_A_ (W)w); 1511 ev_stop (EV_A_ (W)w);
1046} 1512}
1047 1513
1048#ifndef SA_RESTART 1514#ifndef SA_RESTART
1049# define SA_RESTART 0 1515# define SA_RESTART 0
1050#endif 1516#endif
1051 1517
1052void 1518void
1053ev_signal_start (EV_P_ struct ev_signal *w) 1519ev_signal_start (EV_P_ struct ev_signal *w)
1054{ 1520{
1521#if EV_MULTIPLICITY
1522 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1523#endif
1055 if (ev_is_active (w)) 1524 if (ev_is_active (w))
1056 return; 1525 return;
1057 1526
1058 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1527 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1059 1528
1060 ev_start (EV_A_ (W)w, 1); 1529 ev_start (EV_A_ (W)w, 1);
1061 array_needsize (signals, signalmax, w->signum, signals_init); 1530 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1062 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1531 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1063 1532
1064 if (!w->next) 1533 if (!((WL)w)->next)
1065 { 1534 {
1535#if _WIN32
1536 signal (w->signum, sighandler);
1537#else
1066 struct sigaction sa; 1538 struct sigaction sa;
1067 sa.sa_handler = sighandler; 1539 sa.sa_handler = sighandler;
1068 sigfillset (&sa.sa_mask); 1540 sigfillset (&sa.sa_mask);
1069 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1541 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1070 sigaction (w->signum, &sa, 0); 1542 sigaction (w->signum, &sa, 0);
1543#endif
1071 } 1544 }
1072} 1545}
1073 1546
1074void 1547void
1075ev_signal_stop (EV_P_ struct ev_signal *w) 1548ev_signal_stop (EV_P_ struct ev_signal *w)
1084 if (!signals [w->signum - 1].head) 1557 if (!signals [w->signum - 1].head)
1085 signal (w->signum, SIG_DFL); 1558 signal (w->signum, SIG_DFL);
1086} 1559}
1087 1560
1088void 1561void
1089ev_idle_start (EV_P_ struct ev_idle *w)
1090{
1091 if (ev_is_active (w))
1092 return;
1093
1094 ev_start (EV_A_ (W)w, ++idlecnt);
1095 array_needsize (idles, idlemax, idlecnt, );
1096 idles [idlecnt - 1] = w;
1097}
1098
1099void
1100ev_idle_stop (EV_P_ struct ev_idle *w)
1101{
1102 ev_clear_pending (EV_A_ (W)w);
1103 if (ev_is_active (w))
1104 return;
1105
1106 idles [w->active - 1] = idles [--idlecnt];
1107 ev_stop (EV_A_ (W)w);
1108}
1109
1110void
1111ev_prepare_start (EV_P_ struct ev_prepare *w)
1112{
1113 if (ev_is_active (w))
1114 return;
1115
1116 ev_start (EV_A_ (W)w, ++preparecnt);
1117 array_needsize (prepares, preparemax, preparecnt, );
1118 prepares [preparecnt - 1] = w;
1119}
1120
1121void
1122ev_prepare_stop (EV_P_ struct ev_prepare *w)
1123{
1124 ev_clear_pending (EV_A_ (W)w);
1125 if (ev_is_active (w))
1126 return;
1127
1128 prepares [w->active - 1] = prepares [--preparecnt];
1129 ev_stop (EV_A_ (W)w);
1130}
1131
1132void
1133ev_check_start (EV_P_ struct ev_check *w)
1134{
1135 if (ev_is_active (w))
1136 return;
1137
1138 ev_start (EV_A_ (W)w, ++checkcnt);
1139 array_needsize (checks, checkmax, checkcnt, );
1140 checks [checkcnt - 1] = w;
1141}
1142
1143void
1144ev_check_stop (EV_P_ struct ev_check *w)
1145{
1146 ev_clear_pending (EV_A_ (W)w);
1147 if (ev_is_active (w))
1148 return;
1149
1150 checks [w->active - 1] = checks [--checkcnt];
1151 ev_stop (EV_A_ (W)w);
1152}
1153
1154void
1155ev_child_start (EV_P_ struct ev_child *w) 1562ev_child_start (EV_P_ struct ev_child *w)
1156{ 1563{
1564#if EV_MULTIPLICITY
1565 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1566#endif
1157 if (ev_is_active (w)) 1567 if (ev_is_active (w))
1158 return; 1568 return;
1159 1569
1160 ev_start (EV_A_ (W)w, 1); 1570 ev_start (EV_A_ (W)w, 1);
1161 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1571 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1163 1573
1164void 1574void
1165ev_child_stop (EV_P_ struct ev_child *w) 1575ev_child_stop (EV_P_ struct ev_child *w)
1166{ 1576{
1167 ev_clear_pending (EV_A_ (W)w); 1577 ev_clear_pending (EV_A_ (W)w);
1168 if (ev_is_active (w)) 1578 if (!ev_is_active (w))
1169 return; 1579 return;
1170 1580
1171 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1581 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1172 ev_stop (EV_A_ (W)w); 1582 ev_stop (EV_A_ (W)w);
1173} 1583}
1188 void (*cb)(int revents, void *arg) = once->cb; 1598 void (*cb)(int revents, void *arg) = once->cb;
1189 void *arg = once->arg; 1599 void *arg = once->arg;
1190 1600
1191 ev_io_stop (EV_A_ &once->io); 1601 ev_io_stop (EV_A_ &once->io);
1192 ev_timer_stop (EV_A_ &once->to); 1602 ev_timer_stop (EV_A_ &once->to);
1193 free (once); 1603 ev_free (once);
1194 1604
1195 cb (revents, arg); 1605 cb (revents, arg);
1196} 1606}
1197 1607
1198static void 1608static void
1208} 1618}
1209 1619
1210void 1620void
1211ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1621ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1212{ 1622{
1213 struct ev_once *once = malloc (sizeof (struct ev_once)); 1623 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1214 1624
1215 if (!once) 1625 if (!once)
1216 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1626 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1217 else 1627 else
1218 { 1628 {
1219 once->cb = cb; 1629 once->cb = cb;
1220 once->arg = arg; 1630 once->arg = arg;
1221 1631
1222 ev_watcher_init (&once->io, once_cb_io); 1632 ev_init (&once->io, once_cb_io);
1223 if (fd >= 0) 1633 if (fd >= 0)
1224 { 1634 {
1225 ev_io_set (&once->io, fd, events); 1635 ev_io_set (&once->io, fd, events);
1226 ev_io_start (EV_A_ &once->io); 1636 ev_io_start (EV_A_ &once->io);
1227 } 1637 }
1228 1638
1229 ev_watcher_init (&once->to, once_cb_to); 1639 ev_init (&once->to, once_cb_to);
1230 if (timeout >= 0.) 1640 if (timeout >= 0.)
1231 { 1641 {
1232 ev_timer_set (&once->to, timeout, 0.); 1642 ev_timer_set (&once->to, timeout, 0.);
1233 ev_timer_start (EV_A_ &once->to); 1643 ev_timer_start (EV_A_ &once->to);
1234 } 1644 }
1235 } 1645 }
1236} 1646}
1237 1647
1238/*****************************************************************************/ 1648#ifdef __cplusplus
1239
1240#if 0
1241
1242struct ev_io wio;
1243
1244static void
1245sin_cb (struct ev_io *w, int revents)
1246{
1247 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1248} 1649}
1249
1250static void
1251ocb (struct ev_timer *w, int revents)
1252{
1253 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1254 ev_timer_stop (w);
1255 ev_timer_start (w);
1256}
1257
1258static void
1259scb (struct ev_signal *w, int revents)
1260{
1261 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1262 ev_io_stop (&wio);
1263 ev_io_start (&wio);
1264}
1265
1266static void
1267gcb (struct ev_signal *w, int revents)
1268{
1269 fprintf (stderr, "generic %x\n", revents);
1270
1271}
1272
1273int main (void)
1274{
1275 ev_init (0);
1276
1277 ev_io_init (&wio, sin_cb, 0, EV_READ);
1278 ev_io_start (&wio);
1279
1280 struct ev_timer t[10000];
1281
1282#if 0
1283 int i;
1284 for (i = 0; i < 10000; ++i)
1285 {
1286 struct ev_timer *w = t + i;
1287 ev_watcher_init (w, ocb, i);
1288 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1289 ev_timer_start (w);
1290 if (drand48 () < 0.5)
1291 ev_timer_stop (w);
1292 }
1293#endif 1650#endif
1294 1651
1295 struct ev_timer t1;
1296 ev_timer_init (&t1, ocb, 5, 10);
1297 ev_timer_start (&t1);
1298
1299 struct ev_signal sig;
1300 ev_signal_init (&sig, scb, SIGQUIT);
1301 ev_signal_start (&sig);
1302
1303 struct ev_check cw;
1304 ev_check_init (&cw, gcb);
1305 ev_check_start (&cw);
1306
1307 struct ev_idle iw;
1308 ev_idle_init (&iw, gcb);
1309 ev_idle_start (&iw);
1310
1311 ev_loop (0);
1312
1313 return 0;
1314}
1315
1316#endif
1317
1318
1319
1320

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