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Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.110 by root, Mon Nov 12 05:56:49 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 EMPTY /* required for microsofts broken pseudo-c compiler */
173
114typedef struct ev_watcher *W; 174typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 175typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 176typedef struct ev_watcher_time *WT;
117 177
118static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 178static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119 179
180#ifdef _WIN32
181# include "ev_win32.c"
182#endif
183
120/*****************************************************************************/ 184/*****************************************************************************/
121 185
186static void (*syserr_cb)(const char *msg);
187
188void ev_set_syserr_cb (void (*cb)(const char *msg))
189{
190 syserr_cb = cb;
191}
192
193static void
194syserr (const char *msg)
195{
196 if (!msg)
197 msg = "(libev) system error";
198
199 if (syserr_cb)
200 syserr_cb (msg);
201 else
202 {
203 perror (msg);
204 abort ();
205 }
206}
207
208static void *(*alloc)(void *ptr, long size);
209
210void ev_set_allocator (void *(*cb)(void *ptr, long size))
211{
212 alloc = cb;
213}
214
215static void *
216ev_realloc (void *ptr, long size)
217{
218 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
219
220 if (!ptr && size)
221 {
222 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
223 abort ();
224 }
225
226 return ptr;
227}
228
229#define ev_malloc(size) ev_realloc (0, (size))
230#define ev_free(ptr) ev_realloc ((ptr), 0)
231
232/*****************************************************************************/
233
122typedef struct 234typedef struct
123{ 235{
124 struct ev_watcher_list *head; 236 WL head;
125 unsigned char events; 237 unsigned char events;
126 unsigned char reify; 238 unsigned char reify;
239#if EV_SELECT_IS_WINSOCKET
240 SOCKET handle;
241#endif
127} ANFD; 242} ANFD;
128 243
129typedef struct 244typedef struct
130{ 245{
131 W w; 246 W w;
132 int events; 247 int events;
133} ANPENDING; 248} ANPENDING;
134 249
135#ifdef EV_MULTIPLICITY 250#if EV_MULTIPLICITY
136 251
137struct ev_loop 252 struct ev_loop
138{ 253 {
254 ev_tstamp ev_rt_now;
255 #define ev_rt_now ((loop)->ev_rt_now)
139# define VAR(name,decl) decl; 256 #define VAR(name,decl) decl;
140# include "ev_vars.h" 257 #include "ev_vars.h"
141};
142# undef VAR 258 #undef VAR
259 };
143# include "ev_wrap.h" 260 #include "ev_wrap.h"
261
262 struct ev_loop default_loop_struct;
263 static struct ev_loop *default_loop;
144 264
145#else 265#else
146 266
267 ev_tstamp ev_rt_now;
147# define VAR(name,decl) static decl; 268 #define VAR(name,decl) static decl;
148# include "ev_vars.h" 269 #include "ev_vars.h"
149# undef VAR 270 #undef VAR
271
272 static int default_loop;
150 273
151#endif 274#endif
152 275
153/*****************************************************************************/ 276/*****************************************************************************/
154 277
155inline ev_tstamp 278ev_tstamp
156ev_time (void) 279ev_time (void)
157{ 280{
158#if EV_USE_REALTIME 281#if EV_USE_REALTIME
159 struct timespec ts; 282 struct timespec ts;
160 clock_gettime (CLOCK_REALTIME, &ts); 283 clock_gettime (CLOCK_REALTIME, &ts);
179#endif 302#endif
180 303
181 return ev_time (); 304 return ev_time ();
182} 305}
183 306
307#if EV_MULTIPLICITY
184ev_tstamp 308ev_tstamp
185ev_now (EV_P) 309ev_now (EV_P)
186{ 310{
187 return rt_now; 311 return ev_rt_now;
188} 312}
313#endif
189 314
190#define array_roundsize(base,n) ((n) | 4 & ~3) 315#define array_roundsize(type,n) (((n) | 4) & ~3)
191 316
192#define array_needsize(base,cur,cnt,init) \ 317#define array_needsize(type,base,cur,cnt,init) \
193 if (expect_false ((cnt) > cur)) \ 318 if (expect_false ((cnt) > cur)) \
194 { \ 319 { \
195 int newcnt = cur; \ 320 int newcnt = cur; \
196 do \ 321 do \
197 { \ 322 { \
198 newcnt = array_roundsize (base, newcnt << 1); \ 323 newcnt = array_roundsize (type, newcnt << 1); \
199 } \ 324 } \
200 while ((cnt) > newcnt); \ 325 while ((cnt) > newcnt); \
201 \ 326 \
202 base = realloc (base, sizeof (*base) * (newcnt)); \ 327 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
203 init (base + cur, newcnt - cur); \ 328 init (base + cur, newcnt - cur); \
204 cur = newcnt; \ 329 cur = newcnt; \
205 } 330 }
331
332#define array_slim(type,stem) \
333 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
334 { \
335 stem ## max = array_roundsize (stem ## cnt >> 1); \
336 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
337 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
338 }
339
340#define array_free(stem, idx) \
341 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206 342
207/*****************************************************************************/ 343/*****************************************************************************/
208 344
209static void 345static void
210anfds_init (ANFD *base, int count) 346anfds_init (ANFD *base, int count)
217 353
218 ++base; 354 ++base;
219 } 355 }
220} 356}
221 357
222static void 358void
223event (EV_P_ W w, int events) 359ev_feed_event (EV_P_ void *w, int revents)
224{ 360{
361 W w_ = (W)w;
362
225 if (w->pending) 363 if (w_->pending)
226 { 364 {
227 pendings [ABSPRI (w)][w->pending - 1].events |= events; 365 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
228 return; 366 return;
229 } 367 }
230 368
231 w->pending = ++pendingcnt [ABSPRI (w)]; 369 w_->pending = ++pendingcnt [ABSPRI (w_)];
232 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 370 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233 pendings [ABSPRI (w)][w->pending - 1].w = w; 371 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234 pendings [ABSPRI (w)][w->pending - 1].events = events; 372 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235} 373}
236 374
237static void 375static void
238queue_events (EV_P_ W *events, int eventcnt, int type) 376queue_events (EV_P_ W *events, int eventcnt, int type)
239{ 377{
240 int i; 378 int i;
241 379
242 for (i = 0; i < eventcnt; ++i) 380 for (i = 0; i < eventcnt; ++i)
243 event (EV_A_ events [i], type); 381 ev_feed_event (EV_A_ events [i], type);
244} 382}
245 383
246static void 384inline void
247fd_event (EV_P_ int fd, int events) 385fd_event (EV_P_ int fd, int revents)
248{ 386{
249 ANFD *anfd = anfds + fd; 387 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 388 struct ev_io *w;
251 389
252 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 390 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
253 { 391 {
254 int ev = w->events & events; 392 int ev = w->events & revents;
255 393
256 if (ev) 394 if (ev)
257 event (EV_A_ (W)w, ev); 395 ev_feed_event (EV_A_ (W)w, ev);
258 } 396 }
397}
398
399void
400ev_feed_fd_event (EV_P_ int fd, int revents)
401{
402 fd_event (EV_A_ fd, revents);
259} 403}
260 404
261/*****************************************************************************/ 405/*****************************************************************************/
262 406
263static void 407static void
274 int events = 0; 418 int events = 0;
275 419
276 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 420 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
277 events |= w->events; 421 events |= w->events;
278 422
423#if EV_SELECT_IS_WINSOCKET
424 if (events)
425 {
426 unsigned long argp;
427 anfd->handle = _get_osfhandle (fd);
428 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
429 }
430#endif
431
279 anfd->reify = 0; 432 anfd->reify = 0;
280 433
281 if (anfd->events != events)
282 {
283 method_modify (EV_A_ fd, anfd->events, events); 434 method_modify (EV_A_ fd, anfd->events, events);
284 anfd->events = events; 435 anfd->events = events;
285 }
286 } 436 }
287 437
288 fdchangecnt = 0; 438 fdchangecnt = 0;
289} 439}
290 440
291static void 441static void
292fd_change (EV_P_ int fd) 442fd_change (EV_P_ int fd)
293{ 443{
294 if (anfds [fd].reify || fdchangecnt < 0) 444 if (anfds [fd].reify)
295 return; 445 return;
296 446
297 anfds [fd].reify = 1; 447 anfds [fd].reify = 1;
298 448
299 ++fdchangecnt; 449 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 450 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301 fdchanges [fdchangecnt - 1] = fd; 451 fdchanges [fdchangecnt - 1] = fd;
302} 452}
303 453
304static void 454static void
305fd_kill (EV_P_ int fd) 455fd_kill (EV_P_ int fd)
307 struct ev_io *w; 457 struct ev_io *w;
308 458
309 while ((w = (struct ev_io *)anfds [fd].head)) 459 while ((w = (struct ev_io *)anfds [fd].head))
310 { 460 {
311 ev_io_stop (EV_A_ w); 461 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 462 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 463 }
464}
465
466static int
467fd_valid (int fd)
468{
469#ifdef _WIN32
470 return _get_osfhandle (fd) != -1;
471#else
472 return fcntl (fd, F_GETFD) != -1;
473#endif
314} 474}
315 475
316/* called on EBADF to verify fds */ 476/* called on EBADF to verify fds */
317static void 477static void
318fd_ebadf (EV_P) 478fd_ebadf (EV_P)
319{ 479{
320 int fd; 480 int fd;
321 481
322 for (fd = 0; fd < anfdmax; ++fd) 482 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 483 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 484 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 485 fd_kill (EV_A_ fd);
326} 486}
327 487
328/* called on ENOMEM in select/poll to kill some fds and retry */ 488/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 489static void
330fd_enomem (EV_P) 490fd_enomem (EV_P)
331{ 491{
332 int fd = anfdmax; 492 int fd;
333 493
334 while (fd--) 494 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 495 if (anfds [fd].events)
336 { 496 {
337 close (fd);
338 fd_kill (EV_A_ fd); 497 fd_kill (EV_A_ fd);
339 return; 498 return;
340 } 499 }
341} 500}
342 501
502/* usually called after fork if method needs to re-arm all fds from scratch */
503static void
504fd_rearm_all (EV_P)
505{
506 int fd;
507
508 /* this should be highly optimised to not do anything but set a flag */
509 for (fd = 0; fd < anfdmax; ++fd)
510 if (anfds [fd].events)
511 {
512 anfds [fd].events = 0;
513 fd_change (EV_A_ fd);
514 }
515}
516
343/*****************************************************************************/ 517/*****************************************************************************/
344 518
345static void 519static void
346upheap (WT *heap, int k) 520upheap (WT *heap, int k)
347{ 521{
348 WT w = heap [k]; 522 WT w = heap [k];
349 523
350 while (k && heap [k >> 1]->at > w->at) 524 while (k && heap [k >> 1]->at > w->at)
351 { 525 {
352 heap [k] = heap [k >> 1]; 526 heap [k] = heap [k >> 1];
353 heap [k]->active = k + 1; 527 ((W)heap [k])->active = k + 1;
354 k >>= 1; 528 k >>= 1;
355 } 529 }
356 530
357 heap [k] = w; 531 heap [k] = w;
358 heap [k]->active = k + 1; 532 ((W)heap [k])->active = k + 1;
359 533
360} 534}
361 535
362static void 536static void
363downheap (WT *heap, int N, int k) 537downheap (WT *heap, int N, int k)
373 547
374 if (w->at <= heap [j]->at) 548 if (w->at <= heap [j]->at)
375 break; 549 break;
376 550
377 heap [k] = heap [j]; 551 heap [k] = heap [j];
378 heap [k]->active = k + 1; 552 ((W)heap [k])->active = k + 1;
379 k = j; 553 k = j;
380 } 554 }
381 555
382 heap [k] = w; 556 heap [k] = w;
383 heap [k]->active = k + 1; 557 ((W)heap [k])->active = k + 1;
558}
559
560inline void
561adjustheap (WT *heap, int N, int k)
562{
563 upheap (heap, k);
564 downheap (heap, N, k);
384} 565}
385 566
386/*****************************************************************************/ 567/*****************************************************************************/
387 568
388typedef struct 569typedef struct
389{ 570{
390 struct ev_watcher_list *head; 571 WL head;
391 sig_atomic_t volatile gotsig; 572 sig_atomic_t volatile gotsig;
392} ANSIG; 573} ANSIG;
393 574
394static ANSIG *signals; 575static ANSIG *signals;
395static int signalmax; 576static int signalmax;
396 577
397static int sigpipe [2]; 578static int sigpipe [2];
398static sig_atomic_t volatile gotsig; 579static sig_atomic_t volatile gotsig;
580static struct ev_io sigev;
399 581
400static void 582static void
401signals_init (ANSIG *base, int count) 583signals_init (ANSIG *base, int count)
402{ 584{
403 while (count--) 585 while (count--)
410} 592}
411 593
412static void 594static void
413sighandler (int signum) 595sighandler (int signum)
414{ 596{
597#if _WIN32
598 signal (signum, sighandler);
599#endif
600
415 signals [signum - 1].gotsig = 1; 601 signals [signum - 1].gotsig = 1;
416 602
417 if (!gotsig) 603 if (!gotsig)
418 { 604 {
419 int old_errno = errno; 605 int old_errno = errno;
421 write (sigpipe [1], &signum, 1); 607 write (sigpipe [1], &signum, 1);
422 errno = old_errno; 608 errno = old_errno;
423 } 609 }
424} 610}
425 611
612void
613ev_feed_signal_event (EV_P_ int signum)
614{
615 WL w;
616
617#if EV_MULTIPLICITY
618 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
619#endif
620
621 --signum;
622
623 if (signum < 0 || signum >= signalmax)
624 return;
625
626 signals [signum].gotsig = 0;
627
628 for (w = signals [signum].head; w; w = w->next)
629 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
630}
631
426static void 632static void
427sigcb (EV_P_ struct ev_io *iow, int revents) 633sigcb (EV_P_ struct ev_io *iow, int revents)
428{ 634{
429 struct ev_watcher_list *w;
430 int signum; 635 int signum;
431 636
432 read (sigpipe [0], &revents, 1); 637 read (sigpipe [0], &revents, 1);
433 gotsig = 0; 638 gotsig = 0;
434 639
435 for (signum = signalmax; signum--; ) 640 for (signum = signalmax; signum--; )
436 if (signals [signum].gotsig) 641 if (signals [signum].gotsig)
437 { 642 ev_feed_signal_event (EV_A_ signum + 1);
438 signals [signum].gotsig = 0; 643}
439 644
440 for (w = signals [signum].head; w; w = w->next) 645inline void
441 event (EV_A_ (W)w, EV_SIGNAL); 646fd_intern (int fd)
442 } 647{
648#ifdef _WIN32
649 int arg = 1;
650 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
651#else
652 fcntl (fd, F_SETFD, FD_CLOEXEC);
653 fcntl (fd, F_SETFL, O_NONBLOCK);
654#endif
443} 655}
444 656
445static void 657static void
446siginit (EV_P) 658siginit (EV_P)
447{ 659{
448#ifndef WIN32 660 fd_intern (sigpipe [0]);
449 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 661 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
456 662
457 ev_io_set (&sigev, sigpipe [0], EV_READ); 663 ev_io_set (&sigev, sigpipe [0], EV_READ);
458 ev_io_start (EV_A_ &sigev); 664 ev_io_start (EV_A_ &sigev);
459 ev_unref (EV_A); /* child watcher should not keep loop alive */ 665 ev_unref (EV_A); /* child watcher should not keep loop alive */
460} 666}
461 667
462/*****************************************************************************/ 668/*****************************************************************************/
463 669
670static struct ev_child *childs [PID_HASHSIZE];
671
464#ifndef WIN32 672#ifndef _WIN32
673
674static struct ev_signal childev;
465 675
466#ifndef WCONTINUED 676#ifndef WCONTINUED
467# define WCONTINUED 0 677# define WCONTINUED 0
468#endif 678#endif
469 679
473 struct ev_child *w; 683 struct ev_child *w;
474 684
475 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 685 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) 686 if (w->pid == pid || !w->pid)
477 { 687 {
478 w->priority = sw->priority; /* need to do it *now* */ 688 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
479 w->rpid = pid; 689 w->rpid = pid;
480 w->rstatus = status; 690 w->rstatus = status;
481 event (EV_A_ (W)w, EV_CHILD); 691 ev_feed_event (EV_A_ (W)w, EV_CHILD);
482 } 692 }
483} 693}
484 694
485static void 695static void
486childcb (EV_P_ struct ev_signal *sw, int revents) 696childcb (EV_P_ struct ev_signal *sw, int revents)
488 int pid, status; 698 int pid, status;
489 699
490 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 700 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491 { 701 {
492 /* make sure we are called again until all childs have been reaped */ 702 /* make sure we are called again until all childs have been reaped */
493 event (EV_A_ (W)sw, EV_SIGNAL); 703 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494 704
495 child_reap (EV_A_ sw, pid, pid, status); 705 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 */ 706 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497 } 707 }
498} 708}
505# include "ev_kqueue.c" 715# include "ev_kqueue.c"
506#endif 716#endif
507#if EV_USE_EPOLL 717#if EV_USE_EPOLL
508# include "ev_epoll.c" 718# include "ev_epoll.c"
509#endif 719#endif
510#if EV_USEV_POLL 720#if EV_USE_POLL
511# include "ev_poll.c" 721# include "ev_poll.c"
512#endif 722#endif
513#if EV_USE_SELECT 723#if EV_USE_SELECT
514# include "ev_select.c" 724# include "ev_select.c"
515#endif 725#endif
528 738
529/* return true if we are running with elevated privileges and should ignore env variables */ 739/* return true if we are running with elevated privileges and should ignore env variables */
530static int 740static int
531enable_secure (void) 741enable_secure (void)
532{ 742{
533#ifdef WIN32 743#ifdef _WIN32
534 return 0; 744 return 0;
535#else 745#else
536 return getuid () != geteuid () 746 return getuid () != geteuid ()
537 || getgid () != getegid (); 747 || getgid () != getegid ();
538#endif 748#endif
543{ 753{
544 return method; 754 return method;
545} 755}
546 756
547static void 757static void
548loop_init (EV_P_ int methods) 758loop_init (EV_P_ unsigned int flags)
549{ 759{
550 if (!method) 760 if (!method)
551 { 761 {
552#if EV_USE_MONOTONIC 762#if EV_USE_MONOTONIC
553 { 763 {
555 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 765 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556 have_monotonic = 1; 766 have_monotonic = 1;
557 } 767 }
558#endif 768#endif
559 769
560 rt_now = ev_time (); 770 ev_rt_now = ev_time ();
561 mn_now = get_clock (); 771 mn_now = get_clock ();
562 now_floor = mn_now; 772 now_floor = mn_now;
563 rtmn_diff = rt_now - mn_now; 773 rtmn_diff = ev_rt_now - mn_now;
564 774
565 if (pipe (sigpipe)) 775 if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
566 return 0; 776 flags = atoi (getenv ("LIBEV_FLAGS"));
567 777
568 if (methods == EVMETHOD_AUTO) 778 if (!(flags & 0x0000ffff))
569 if (!enable_secure () && getenv ("LIBmethodS")) 779 flags |= 0x0000ffff;
570 methods = atoi (getenv ("LIBmethodS"));
571 else
572 methods = EVMETHOD_ANY;
573 780
574 method = 0; 781 method = 0;
575#if EV_USE_KQUEUE 782#if EV_USE_KQUEUE
576 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 783 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
577#endif 784#endif
578#if EV_USE_EPOLL 785#if EV_USE_EPOLL
579 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 786 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
580#endif 787#endif
581#if EV_USEV_POLL 788#if EV_USE_POLL
582 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 789 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
583#endif 790#endif
584#if EV_USE_SELECT 791#if EV_USE_SELECT
585 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 792 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
586#endif 793#endif
587 794
795 ev_init (&sigev, sigcb);
796 ev_set_priority (&sigev, EV_MAXPRI);
797 }
798}
799
800void
801loop_destroy (EV_P)
802{
803 int i;
804
805#if EV_USE_KQUEUE
806 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
807#endif
808#if EV_USE_EPOLL
809 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
810#endif
811#if EV_USE_POLL
812 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
813#endif
814#if EV_USE_SELECT
815 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
816#endif
817
818 for (i = NUMPRI; i--; )
819 array_free (pending, [i]);
820
821 /* have to use the microsoft-never-gets-it-right macro */
822 array_free (fdchange, EMPTY);
823 array_free (timer, EMPTY);
824#if EV_PERIODICS
825 array_free (periodic, EMPTY);
826#endif
827 array_free (idle, EMPTY);
828 array_free (prepare, EMPTY);
829 array_free (check, EMPTY);
830
831 method = 0;
832}
833
834static void
835loop_fork (EV_P)
836{
837#if EV_USE_EPOLL
838 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
839#endif
840#if EV_USE_KQUEUE
841 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
842#endif
843
844 if (ev_is_active (&sigev))
845 {
846 /* default loop */
847
848 ev_ref (EV_A);
849 ev_io_stop (EV_A_ &sigev);
850 close (sigpipe [0]);
851 close (sigpipe [1]);
852
853 while (pipe (sigpipe))
854 syserr ("(libev) error creating pipe");
855
856 siginit (EV_A);
857 }
858
859 postfork = 0;
860}
861
862#if EV_MULTIPLICITY
863struct ev_loop *
864ev_loop_new (unsigned int flags)
865{
866 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
867
868 memset (loop, 0, sizeof (struct ev_loop));
869
870 loop_init (EV_A_ flags);
871
872 if (ev_method (EV_A))
873 return loop;
874
875 return 0;
876}
877
878void
879ev_loop_destroy (EV_P)
880{
881 loop_destroy (EV_A);
882 ev_free (loop);
883}
884
885void
886ev_loop_fork (EV_P)
887{
888 postfork = 1;
889}
890
891#endif
892
893#if EV_MULTIPLICITY
894struct ev_loop *
895#else
896int
897#endif
898ev_default_loop (unsigned int flags)
899{
900 if (sigpipe [0] == sigpipe [1])
901 if (pipe (sigpipe))
902 return 0;
903
904 if (!default_loop)
905 {
906#if EV_MULTIPLICITY
907 struct ev_loop *loop = default_loop = &default_loop_struct;
908#else
909 default_loop = 1;
910#endif
911
912 loop_init (EV_A_ flags);
913
588 if (method) 914 if (ev_method (EV_A))
589 { 915 {
590 ev_watcher_init (&sigev, sigcb);
591 ev_set_priority (&sigev, EV_MAXPRI);
592 siginit (EV_A); 916 siginit (EV_A);
593 917
594#ifndef WIN32 918#ifndef _WIN32
595 ev_signal_init (&childev, childcb, SIGCHLD); 919 ev_signal_init (&childev, childcb, SIGCHLD);
596 ev_set_priority (&childev, EV_MAXPRI); 920 ev_set_priority (&childev, EV_MAXPRI);
597 ev_signal_start (EV_A_ &childev); 921 ev_signal_start (EV_A_ &childev);
598 ev_unref (EV_A); /* child watcher should not keep loop alive */ 922 ev_unref (EV_A); /* child watcher should not keep loop alive */
599#endif 923#endif
600 } 924 }
925 else
926 default_loop = 0;
601 } 927 }
602 928
603 return method; 929 return default_loop;
604} 930}
605 931
932void
933ev_default_destroy (void)
934{
606#ifdef EV_MULTIPLICITY 935#if EV_MULTIPLICITY
607 936 struct ev_loop *loop = default_loop;
608struct ev_loop *
609ev_loop_new (int methods)
610{
611 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
612
613 loop_init (EV_A_ methods);
614
615 return loop;
616}
617
618void
619ev_loop_delete (EV_P)
620{
621 /*TODO*/
622 free (loop);
623}
624
625#else
626
627int
628ev_init (int methods)
629{
630 loop_init ();
631}
632
633#endif 937#endif
938
939#ifndef _WIN32
940 ev_ref (EV_A); /* child watcher */
941 ev_signal_stop (EV_A_ &childev);
942#endif
943
944 ev_ref (EV_A); /* signal watcher */
945 ev_io_stop (EV_A_ &sigev);
946
947 close (sigpipe [0]); sigpipe [0] = 0;
948 close (sigpipe [1]); sigpipe [1] = 0;
949
950 loop_destroy (EV_A);
951}
952
953void
954ev_default_fork (void)
955{
956#if EV_MULTIPLICITY
957 struct ev_loop *loop = default_loop;
958#endif
959
960 if (method)
961 postfork = 1;
962}
634 963
635/*****************************************************************************/ 964/*****************************************************************************/
636 965
637void 966static int
638ev_fork_prepare (void) 967any_pending (EV_P)
639{ 968{
640 /* nop */ 969 int pri;
641}
642 970
643void 971 for (pri = NUMPRI; pri--; )
644ev_fork_parent (void) 972 if (pendingcnt [pri])
645{ 973 return 1;
646 /* nop */
647}
648 974
649void 975 return 0;
650ev_fork_child (void)
651{
652 /*TODO*/
653#if !EV_MULTIPLICITY
654#if EV_USE_EPOLL
655 if (method == EVMETHOD_EPOLL)
656 epoll_postfork_child (EV_A);
657#endif
658
659 ev_io_stop (EV_A_ &sigev);
660 close (sigpipe [0]);
661 close (sigpipe [1]);
662 pipe (sigpipe);
663 siginit (EV_A);
664#endif
665} 976}
666
667/*****************************************************************************/
668 977
669static void 978static void
670call_pending (EV_P) 979call_pending (EV_P)
671{ 980{
672 int pri; 981 int pri;
677 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 986 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678 987
679 if (p->w) 988 if (p->w)
680 { 989 {
681 p->w->pending = 0; 990 p->w->pending = 0;
682 p->w->cb (EV_A_ p->w, p->events); 991 EV_CB_INVOKE (p->w, p->events);
683 } 992 }
684 } 993 }
685} 994}
686 995
687static void 996static void
688timers_reify (EV_P) 997timers_reify (EV_P)
689{ 998{
690 while (timercnt && timers [0]->at <= mn_now) 999 while (timercnt && ((WT)timers [0])->at <= mn_now)
691 { 1000 {
692 struct ev_timer *w = timers [0]; 1001 struct ev_timer *w = timers [0];
1002
1003 assert (("inactive timer on timer heap detected", ev_is_active (w)));
693 1004
694 /* first reschedule or stop timer */ 1005 /* first reschedule or stop timer */
695 if (w->repeat) 1006 if (w->repeat)
696 { 1007 {
697 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1008 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1009
698 w->at = mn_now + w->repeat; 1010 ((WT)w)->at += w->repeat;
1011 if (((WT)w)->at < mn_now)
1012 ((WT)w)->at = mn_now;
1013
699 downheap ((WT *)timers, timercnt, 0); 1014 downheap ((WT *)timers, timercnt, 0);
700 } 1015 }
701 else 1016 else
702 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1017 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703 1018
704 event (EV_A_ (W)w, EV_TIMEOUT); 1019 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705 } 1020 }
706} 1021}
707 1022
1023#if EV_PERIODICS
708static void 1024static void
709periodics_reify (EV_P) 1025periodics_reify (EV_P)
710{ 1026{
711 while (periodiccnt && periodics [0]->at <= rt_now) 1027 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712 { 1028 {
713 struct ev_periodic *w = periodics [0]; 1029 struct ev_periodic *w = periodics [0];
714 1030
1031 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1032
715 /* first reschedule or stop timer */ 1033 /* first reschedule or stop timer */
716 if (w->interval) 1034 if (w->reschedule_cb)
717 { 1035 {
1036 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1037 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1038 downheap ((WT *)periodics, periodiccnt, 0);
1039 }
1040 else if (w->interval)
1041 {
718 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1042 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1043 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720 downheap ((WT *)periodics, periodiccnt, 0); 1044 downheap ((WT *)periodics, periodiccnt, 0);
721 } 1045 }
722 else 1046 else
723 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1047 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724 1048
725 event (EV_A_ (W)w, EV_PERIODIC); 1049 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726 } 1050 }
727} 1051}
728 1052
729static void 1053static void
730periodics_reschedule (EV_P) 1054periodics_reschedule (EV_P)
734 /* adjust periodics after time jump */ 1058 /* adjust periodics after time jump */
735 for (i = 0; i < periodiccnt; ++i) 1059 for (i = 0; i < periodiccnt; ++i)
736 { 1060 {
737 struct ev_periodic *w = periodics [i]; 1061 struct ev_periodic *w = periodics [i];
738 1062
1063 if (w->reschedule_cb)
1064 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739 if (w->interval) 1065 else if (w->interval)
740 {
741 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1066 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743 if (fabs (diff) >= 1e-4)
744 {
745 ev_periodic_stop (EV_A_ w);
746 ev_periodic_start (EV_A_ w);
747
748 i = 0; /* restart loop, inefficient, but time jumps should be rare */
749 }
750 }
751 } 1067 }
1068
1069 /* now rebuild the heap */
1070 for (i = periodiccnt >> 1; i--; )
1071 downheap ((WT *)periodics, periodiccnt, i);
752} 1072}
1073#endif
753 1074
754inline int 1075inline int
755time_update_monotonic (EV_P) 1076time_update_monotonic (EV_P)
756{ 1077{
757 mn_now = get_clock (); 1078 mn_now = get_clock ();
758 1079
759 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1080 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760 { 1081 {
761 rt_now = rtmn_diff + mn_now; 1082 ev_rt_now = rtmn_diff + mn_now;
762 return 0; 1083 return 0;
763 } 1084 }
764 else 1085 else
765 { 1086 {
766 now_floor = mn_now; 1087 now_floor = mn_now;
767 rt_now = ev_time (); 1088 ev_rt_now = ev_time ();
768 return 1; 1089 return 1;
769 } 1090 }
770} 1091}
771 1092
772static void 1093static void
781 { 1102 {
782 ev_tstamp odiff = rtmn_diff; 1103 ev_tstamp odiff = rtmn_diff;
783 1104
784 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1105 for (i = 4; --i; ) /* loop a few times, before making important decisions */
785 { 1106 {
786 rtmn_diff = rt_now - mn_now; 1107 rtmn_diff = ev_rt_now - mn_now;
787 1108
788 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1109 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789 return; /* all is well */ 1110 return; /* all is well */
790 1111
791 rt_now = ev_time (); 1112 ev_rt_now = ev_time ();
792 mn_now = get_clock (); 1113 mn_now = get_clock ();
793 now_floor = mn_now; 1114 now_floor = mn_now;
794 } 1115 }
795 1116
1117# if EV_PERIODICS
796 periodics_reschedule (EV_A); 1118 periodics_reschedule (EV_A);
1119# endif
797 /* no timer adjustment, as the monotonic clock doesn't jump */ 1120 /* no timer adjustment, as the monotonic clock doesn't jump */
798 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1121 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799 } 1122 }
800 } 1123 }
801 else 1124 else
802#endif 1125#endif
803 { 1126 {
804 rt_now = ev_time (); 1127 ev_rt_now = ev_time ();
805 1128
806 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1129 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807 { 1130 {
1131#if EV_PERIODICS
808 periodics_reschedule (EV_A); 1132 periodics_reschedule (EV_A);
1133#endif
809 1134
810 /* adjust timers. this is easy, as the offset is the same for all */ 1135 /* adjust timers. this is easy, as the offset is the same for all */
811 for (i = 0; i < timercnt; ++i) 1136 for (i = 0; i < timercnt; ++i)
812 timers [i]->at += rt_now - mn_now; 1137 ((WT)timers [i])->at += ev_rt_now - mn_now;
813 } 1138 }
814 1139
815 mn_now = rt_now; 1140 mn_now = ev_rt_now;
816 } 1141 }
817} 1142}
818 1143
819void 1144void
820ev_ref (EV_P) 1145ev_ref (EV_P)
843 { 1168 {
844 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1169 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845 call_pending (EV_A); 1170 call_pending (EV_A);
846 } 1171 }
847 1172
1173 /* we might have forked, so reify kernel state if necessary */
1174 if (expect_false (postfork))
1175 loop_fork (EV_A);
1176
848 /* update fd-related kernel structures */ 1177 /* update fd-related kernel structures */
849 fd_reify (EV_A); 1178 fd_reify (EV_A);
850 1179
851 /* calculate blocking time */ 1180 /* calculate blocking time */
852 1181
853 /* we only need this for !monotonic clockor timers, but as we basically 1182 /* we only need this for !monotonic clock or timers, but as we basically
854 always have timers, we just calculate it always */ 1183 always have timers, we just calculate it always */
855#if EV_USE_MONOTONIC 1184#if EV_USE_MONOTONIC
856 if (expect_true (have_monotonic)) 1185 if (expect_true (have_monotonic))
857 time_update_monotonic (EV_A); 1186 time_update_monotonic (EV_A);
858 else 1187 else
859#endif 1188#endif
860 { 1189 {
861 rt_now = ev_time (); 1190 ev_rt_now = ev_time ();
862 mn_now = rt_now; 1191 mn_now = ev_rt_now;
863 } 1192 }
864 1193
865 if (flags & EVLOOP_NONBLOCK || idlecnt) 1194 if (flags & EVLOOP_NONBLOCK || idlecnt)
866 block = 0.; 1195 block = 0.;
867 else 1196 else
868 { 1197 {
869 block = MAX_BLOCKTIME; 1198 block = MAX_BLOCKTIME;
870 1199
871 if (timercnt) 1200 if (timercnt)
872 { 1201 {
873 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1202 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874 if (block > to) block = to; 1203 if (block > to) block = to;
875 } 1204 }
876 1205
1206#if EV_PERIODICS
877 if (periodiccnt) 1207 if (periodiccnt)
878 { 1208 {
879 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1209 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
880 if (block > to) block = to; 1210 if (block > to) block = to;
881 } 1211 }
1212#endif
882 1213
883 if (block < 0.) block = 0.; 1214 if (block < 0.) block = 0.;
884 } 1215 }
885 1216
886 method_poll (EV_A_ block); 1217 method_poll (EV_A_ block);
887 1218
888 /* update rt_now, do magic */ 1219 /* update ev_rt_now, do magic */
889 time_update (EV_A); 1220 time_update (EV_A);
890 1221
891 /* queue pending timers and reschedule them */ 1222 /* queue pending timers and reschedule them */
892 timers_reify (EV_A); /* relative timers called last */ 1223 timers_reify (EV_A); /* relative timers called last */
1224#if EV_PERIODICS
893 periodics_reify (EV_A); /* absolute timers called first */ 1225 periodics_reify (EV_A); /* absolute timers called first */
1226#endif
894 1227
895 /* queue idle watchers unless io or timers are pending */ 1228 /* queue idle watchers unless io or timers are pending */
896 if (!pendingcnt) 1229 if (idlecnt && !any_pending (EV_A))
897 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1230 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898 1231
899 /* queue check watchers, to be executed first */ 1232 /* queue check watchers, to be executed first */
900 if (checkcnt) 1233 if (checkcnt)
901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1234 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
976 return; 1309 return;
977 1310
978 assert (("ev_io_start called with negative fd", fd >= 0)); 1311 assert (("ev_io_start called with negative fd", fd >= 0));
979 1312
980 ev_start (EV_A_ (W)w, 1); 1313 ev_start (EV_A_ (W)w, 1);
981 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1314 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1315 wlist_add ((WL *)&anfds[fd].head, (WL)w);
983 1316
984 fd_change (EV_A_ fd); 1317 fd_change (EV_A_ fd);
985} 1318}
986 1319
989{ 1322{
990 ev_clear_pending (EV_A_ (W)w); 1323 ev_clear_pending (EV_A_ (W)w);
991 if (!ev_is_active (w)) 1324 if (!ev_is_active (w))
992 return; 1325 return;
993 1326
1327 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1328
994 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1329 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995 ev_stop (EV_A_ (W)w); 1330 ev_stop (EV_A_ (W)w);
996 1331
997 fd_change (EV_A_ w->fd); 1332 fd_change (EV_A_ w->fd);
998} 1333}
1001ev_timer_start (EV_P_ struct ev_timer *w) 1336ev_timer_start (EV_P_ struct ev_timer *w)
1002{ 1337{
1003 if (ev_is_active (w)) 1338 if (ev_is_active (w))
1004 return; 1339 return;
1005 1340
1006 w->at += mn_now; 1341 ((WT)w)->at += mn_now;
1007 1342
1008 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1343 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009 1344
1010 ev_start (EV_A_ (W)w, ++timercnt); 1345 ev_start (EV_A_ (W)w, ++timercnt);
1011 array_needsize (timers, timermax, timercnt, ); 1346 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1012 timers [timercnt - 1] = w; 1347 timers [timercnt - 1] = w;
1013 upheap ((WT *)timers, timercnt - 1); 1348 upheap ((WT *)timers, timercnt - 1);
1349
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014} 1351}
1015 1352
1016void 1353void
1017ev_timer_stop (EV_P_ struct ev_timer *w) 1354ev_timer_stop (EV_P_ struct ev_timer *w)
1018{ 1355{
1019 ev_clear_pending (EV_A_ (W)w); 1356 ev_clear_pending (EV_A_ (W)w);
1020 if (!ev_is_active (w)) 1357 if (!ev_is_active (w))
1021 return; 1358 return;
1022 1359
1360 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1361
1023 if (w->active < timercnt--) 1362 if (((W)w)->active < timercnt--)
1024 { 1363 {
1025 timers [w->active - 1] = timers [timercnt]; 1364 timers [((W)w)->active - 1] = timers [timercnt];
1026 downheap ((WT *)timers, timercnt, w->active - 1); 1365 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027 } 1366 }
1028 1367
1029 w->at = w->repeat; 1368 ((WT)w)->at -= mn_now;
1030 1369
1031 ev_stop (EV_A_ (W)w); 1370 ev_stop (EV_A_ (W)w);
1032} 1371}
1033 1372
1034void 1373void
1036{ 1375{
1037 if (ev_is_active (w)) 1376 if (ev_is_active (w))
1038 { 1377 {
1039 if (w->repeat) 1378 if (w->repeat)
1040 { 1379 {
1041 w->at = mn_now + w->repeat; 1380 ((WT)w)->at = mn_now + w->repeat;
1042 downheap ((WT *)timers, timercnt, w->active - 1); 1381 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043 } 1382 }
1044 else 1383 else
1045 ev_timer_stop (EV_A_ w); 1384 ev_timer_stop (EV_A_ w);
1046 } 1385 }
1047 else if (w->repeat) 1386 else if (w->repeat)
1048 ev_timer_start (EV_A_ w); 1387 ev_timer_start (EV_A_ w);
1049} 1388}
1050 1389
1390#if EV_PERIODICS
1051void 1391void
1052ev_periodic_start (EV_P_ struct ev_periodic *w) 1392ev_periodic_start (EV_P_ struct ev_periodic *w)
1053{ 1393{
1054 if (ev_is_active (w)) 1394 if (ev_is_active (w))
1055 return; 1395 return;
1056 1396
1397 if (w->reschedule_cb)
1398 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1399 else if (w->interval)
1400 {
1057 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1401 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059 /* this formula differs from the one in periodic_reify because we do not always round up */ 1402 /* this formula differs from the one in periodic_reify because we do not always round up */
1060 if (w->interval)
1061 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1403 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1404 }
1062 1405
1063 ev_start (EV_A_ (W)w, ++periodiccnt); 1406 ev_start (EV_A_ (W)w, ++periodiccnt);
1064 array_needsize (periodics, periodicmax, periodiccnt, ); 1407 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1065 periodics [periodiccnt - 1] = w; 1408 periodics [periodiccnt - 1] = w;
1066 upheap ((WT *)periodics, periodiccnt - 1); 1409 upheap ((WT *)periodics, periodiccnt - 1);
1410
1411 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067} 1412}
1068 1413
1069void 1414void
1070ev_periodic_stop (EV_P_ struct ev_periodic *w) 1415ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071{ 1416{
1072 ev_clear_pending (EV_A_ (W)w); 1417 ev_clear_pending (EV_A_ (W)w);
1073 if (!ev_is_active (w)) 1418 if (!ev_is_active (w))
1074 return; 1419 return;
1075 1420
1421 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1422
1076 if (w->active < periodiccnt--) 1423 if (((W)w)->active < periodiccnt--)
1077 { 1424 {
1078 periodics [w->active - 1] = periodics [periodiccnt]; 1425 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1426 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080 } 1427 }
1081 1428
1429 ev_stop (EV_A_ (W)w);
1430}
1431
1432void
1433ev_periodic_again (EV_P_ struct ev_periodic *w)
1434{
1435 /* TODO: use adjustheap and recalculation */
1436 ev_periodic_stop (EV_A_ w);
1437 ev_periodic_start (EV_A_ w);
1438}
1439#endif
1440
1441void
1442ev_idle_start (EV_P_ struct ev_idle *w)
1443{
1444 if (ev_is_active (w))
1445 return;
1446
1447 ev_start (EV_A_ (W)w, ++idlecnt);
1448 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1449 idles [idlecnt - 1] = w;
1450}
1451
1452void
1453ev_idle_stop (EV_P_ struct ev_idle *w)
1454{
1455 ev_clear_pending (EV_A_ (W)w);
1456 if (!ev_is_active (w))
1457 return;
1458
1459 idles [((W)w)->active - 1] = idles [--idlecnt];
1460 ev_stop (EV_A_ (W)w);
1461}
1462
1463void
1464ev_prepare_start (EV_P_ struct ev_prepare *w)
1465{
1466 if (ev_is_active (w))
1467 return;
1468
1469 ev_start (EV_A_ (W)w, ++preparecnt);
1470 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1471 prepares [preparecnt - 1] = w;
1472}
1473
1474void
1475ev_prepare_stop (EV_P_ struct ev_prepare *w)
1476{
1477 ev_clear_pending (EV_A_ (W)w);
1478 if (!ev_is_active (w))
1479 return;
1480
1481 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1482 ev_stop (EV_A_ (W)w);
1483}
1484
1485void
1486ev_check_start (EV_P_ struct ev_check *w)
1487{
1488 if (ev_is_active (w))
1489 return;
1490
1491 ev_start (EV_A_ (W)w, ++checkcnt);
1492 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1493 checks [checkcnt - 1] = w;
1494}
1495
1496void
1497ev_check_stop (EV_P_ struct ev_check *w)
1498{
1499 ev_clear_pending (EV_A_ (W)w);
1500 if (!ev_is_active (w))
1501 return;
1502
1503 checks [((W)w)->active - 1] = checks [--checkcnt];
1082 ev_stop (EV_A_ (W)w); 1504 ev_stop (EV_A_ (W)w);
1083} 1505}
1084 1506
1085#ifndef SA_RESTART 1507#ifndef SA_RESTART
1086# define SA_RESTART 0 1508# define SA_RESTART 0
1087#endif 1509#endif
1088 1510
1089void 1511void
1090ev_signal_start (EV_P_ struct ev_signal *w) 1512ev_signal_start (EV_P_ struct ev_signal *w)
1091{ 1513{
1514#if EV_MULTIPLICITY
1515 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1516#endif
1092 if (ev_is_active (w)) 1517 if (ev_is_active (w))
1093 return; 1518 return;
1094 1519
1095 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1520 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096 1521
1097 ev_start (EV_A_ (W)w, 1); 1522 ev_start (EV_A_ (W)w, 1);
1098 array_needsize (signals, signalmax, w->signum, signals_init); 1523 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1524 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100 1525
1101 if (!w->next) 1526 if (!((WL)w)->next)
1102 { 1527 {
1528#if _WIN32
1529 signal (w->signum, sighandler);
1530#else
1103 struct sigaction sa; 1531 struct sigaction sa;
1104 sa.sa_handler = sighandler; 1532 sa.sa_handler = sighandler;
1105 sigfillset (&sa.sa_mask); 1533 sigfillset (&sa.sa_mask);
1106 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1534 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107 sigaction (w->signum, &sa, 0); 1535 sigaction (w->signum, &sa, 0);
1536#endif
1108 } 1537 }
1109} 1538}
1110 1539
1111void 1540void
1112ev_signal_stop (EV_P_ struct ev_signal *w) 1541ev_signal_stop (EV_P_ struct ev_signal *w)
1121 if (!signals [w->signum - 1].head) 1550 if (!signals [w->signum - 1].head)
1122 signal (w->signum, SIG_DFL); 1551 signal (w->signum, SIG_DFL);
1123} 1552}
1124 1553
1125void 1554void
1126ev_idle_start (EV_P_ struct ev_idle *w)
1127{
1128 if (ev_is_active (w))
1129 return;
1130
1131 ev_start (EV_A_ (W)w, ++idlecnt);
1132 array_needsize (idles, idlemax, idlecnt, );
1133 idles [idlecnt - 1] = w;
1134}
1135
1136void
1137ev_idle_stop (EV_P_ struct ev_idle *w)
1138{
1139 ev_clear_pending (EV_A_ (W)w);
1140 if (ev_is_active (w))
1141 return;
1142
1143 idles [w->active - 1] = idles [--idlecnt];
1144 ev_stop (EV_A_ (W)w);
1145}
1146
1147void
1148ev_prepare_start (EV_P_ struct ev_prepare *w)
1149{
1150 if (ev_is_active (w))
1151 return;
1152
1153 ev_start (EV_A_ (W)w, ++preparecnt);
1154 array_needsize (prepares, preparemax, preparecnt, );
1155 prepares [preparecnt - 1] = w;
1156}
1157
1158void
1159ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160{
1161 ev_clear_pending (EV_A_ (W)w);
1162 if (ev_is_active (w))
1163 return;
1164
1165 prepares [w->active - 1] = prepares [--preparecnt];
1166 ev_stop (EV_A_ (W)w);
1167}
1168
1169void
1170ev_check_start (EV_P_ struct ev_check *w)
1171{
1172 if (ev_is_active (w))
1173 return;
1174
1175 ev_start (EV_A_ (W)w, ++checkcnt);
1176 array_needsize (checks, checkmax, checkcnt, );
1177 checks [checkcnt - 1] = w;
1178}
1179
1180void
1181ev_check_stop (EV_P_ struct ev_check *w)
1182{
1183 ev_clear_pending (EV_A_ (W)w);
1184 if (ev_is_active (w))
1185 return;
1186
1187 checks [w->active - 1] = checks [--checkcnt];
1188 ev_stop (EV_A_ (W)w);
1189}
1190
1191void
1192ev_child_start (EV_P_ struct ev_child *w) 1555ev_child_start (EV_P_ struct ev_child *w)
1193{ 1556{
1557#if EV_MULTIPLICITY
1558 assert (("child watchers are only supported in the default loop", loop == default_loop));
1559#endif
1194 if (ev_is_active (w)) 1560 if (ev_is_active (w))
1195 return; 1561 return;
1196 1562
1197 ev_start (EV_A_ (W)w, 1); 1563 ev_start (EV_A_ (W)w, 1);
1198 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1564 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1200 1566
1201void 1567void
1202ev_child_stop (EV_P_ struct ev_child *w) 1568ev_child_stop (EV_P_ struct ev_child *w)
1203{ 1569{
1204 ev_clear_pending (EV_A_ (W)w); 1570 ev_clear_pending (EV_A_ (W)w);
1205 if (ev_is_active (w)) 1571 if (!ev_is_active (w))
1206 return; 1572 return;
1207 1573
1208 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1574 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1209 ev_stop (EV_A_ (W)w); 1575 ev_stop (EV_A_ (W)w);
1210} 1576}
1225 void (*cb)(int revents, void *arg) = once->cb; 1591 void (*cb)(int revents, void *arg) = once->cb;
1226 void *arg = once->arg; 1592 void *arg = once->arg;
1227 1593
1228 ev_io_stop (EV_A_ &once->io); 1594 ev_io_stop (EV_A_ &once->io);
1229 ev_timer_stop (EV_A_ &once->to); 1595 ev_timer_stop (EV_A_ &once->to);
1230 free (once); 1596 ev_free (once);
1231 1597
1232 cb (revents, arg); 1598 cb (revents, arg);
1233} 1599}
1234 1600
1235static void 1601static void
1245} 1611}
1246 1612
1247void 1613void
1248ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1614ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1249{ 1615{
1250 struct ev_once *once = malloc (sizeof (struct ev_once)); 1616 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1251 1617
1252 if (!once) 1618 if (!once)
1253 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1619 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1254 else 1620 else
1255 { 1621 {
1256 once->cb = cb; 1622 once->cb = cb;
1257 once->arg = arg; 1623 once->arg = arg;
1258 1624
1259 ev_watcher_init (&once->io, once_cb_io); 1625 ev_init (&once->io, once_cb_io);
1260 if (fd >= 0) 1626 if (fd >= 0)
1261 { 1627 {
1262 ev_io_set (&once->io, fd, events); 1628 ev_io_set (&once->io, fd, events);
1263 ev_io_start (EV_A_ &once->io); 1629 ev_io_start (EV_A_ &once->io);
1264 } 1630 }
1265 1631
1266 ev_watcher_init (&once->to, once_cb_to); 1632 ev_init (&once->to, once_cb_to);
1267 if (timeout >= 0.) 1633 if (timeout >= 0.)
1268 { 1634 {
1269 ev_timer_set (&once->to, timeout, 0.); 1635 ev_timer_set (&once->to, timeout, 0.);
1270 ev_timer_start (EV_A_ &once->to); 1636 ev_timer_start (EV_A_ &once->to);
1271 } 1637 }
1272 } 1638 }
1273} 1639}
1274 1640
1275/*****************************************************************************/ 1641#ifdef __cplusplus
1276
1277#if 0
1278
1279struct ev_io wio;
1280
1281static void
1282sin_cb (struct ev_io *w, int revents)
1283{
1284 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285} 1642}
1286
1287static void
1288ocb (struct ev_timer *w, int revents)
1289{
1290 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291 ev_timer_stop (w);
1292 ev_timer_start (w);
1293}
1294
1295static void
1296scb (struct ev_signal *w, int revents)
1297{
1298 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299 ev_io_stop (&wio);
1300 ev_io_start (&wio);
1301}
1302
1303static void
1304gcb (struct ev_signal *w, int revents)
1305{
1306 fprintf (stderr, "generic %x\n", revents);
1307
1308}
1309
1310int main (void)
1311{
1312 ev_init (0);
1313
1314 ev_io_init (&wio, sin_cb, 0, EV_READ);
1315 ev_io_start (&wio);
1316
1317 struct ev_timer t[10000];
1318
1319#if 0
1320 int i;
1321 for (i = 0; i < 10000; ++i)
1322 {
1323 struct ev_timer *w = t + i;
1324 ev_watcher_init (w, ocb, i);
1325 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326 ev_timer_start (w);
1327 if (drand48 () < 0.5)
1328 ev_timer_stop (w);
1329 }
1330#endif 1643#endif
1331 1644
1332 struct ev_timer t1;
1333 ev_timer_init (&t1, ocb, 5, 10);
1334 ev_timer_start (&t1);
1335
1336 struct ev_signal sig;
1337 ev_signal_init (&sig, scb, SIGQUIT);
1338 ev_signal_start (&sig);
1339
1340 struct ev_check cw;
1341 ev_check_init (&cw, gcb);
1342 ev_check_start (&cw);
1343
1344 struct ev_idle iw;
1345 ev_idle_init (&iw, gcb);
1346 ev_idle_start (&iw);
1347
1348 ev_loop (0);
1349
1350 return 0;
1351}
1352
1353#endif
1354
1355
1356
1357

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