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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 1.105 by root, Mon Nov 12 01:02:09 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) && !defined (__APPLE__)
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) && !defined (__APPLE__)
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
84#endif 128#endif
85 129
86#ifndef CLOCK_REALTIME 130#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 131# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 132# define EV_USE_REALTIME 0
133#endif
134
135#if EV_SELECT_IS_WINSOCKET
136# include <winsock.h>
89#endif 137#endif
90 138
91/**/ 139/**/
92 140
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 141#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) */ 142#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 */ 143#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 */ 144/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
97 145
146#ifdef EV_H
147# include EV_H
148#else
98#include "ev.h" 149# include "ev.h"
150#endif
99 151
100#if __GNUC__ >= 3 152#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value)) 153# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 154# define inline inline
103#else 155#else
109#define expect_true(expr) expect ((expr) != 0, 1) 161#define expect_true(expr) expect ((expr) != 0, 1)
110 162
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 163#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 164#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113 165
166#define EMPTY /* required for microsofts broken pseudo-c compiler */
167
114typedef struct ev_watcher *W; 168typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 169typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 170typedef struct ev_watcher_time *WT;
117 171
172static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
173
174#ifdef _WIN32
175# include "ev_win32.c"
176#endif
177
118/*****************************************************************************/ 178/*****************************************************************************/
119 179
180static void (*syserr_cb)(const char *msg);
181
182void ev_set_syserr_cb (void (*cb)(const char *msg))
183{
184 syserr_cb = cb;
185}
186
187static void
188syserr (const char *msg)
189{
190 if (!msg)
191 msg = "(libev) system error";
192
193 if (syserr_cb)
194 syserr_cb (msg);
195 else
196 {
197 perror (msg);
198 abort ();
199 }
200}
201
202static void *(*alloc)(void *ptr, long size);
203
204void ev_set_allocator (void *(*cb)(void *ptr, long size))
205{
206 alloc = cb;
207}
208
209static void *
210ev_realloc (void *ptr, long size)
211{
212 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
213
214 if (!ptr && size)
215 {
216 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
217 abort ();
218 }
219
220 return ptr;
221}
222
223#define ev_malloc(size) ev_realloc (0, (size))
224#define ev_free(ptr) ev_realloc ((ptr), 0)
225
226/*****************************************************************************/
227
120typedef struct 228typedef struct
121{ 229{
122 struct ev_watcher_list *head; 230 WL head;
123 unsigned char events; 231 unsigned char events;
124 unsigned char reify; 232 unsigned char reify;
233#if EV_SELECT_IS_WINSOCKET
234 SOCKET handle;
235#endif
125} ANFD; 236} ANFD;
126 237
127typedef struct 238typedef struct
128{ 239{
129 W w; 240 W w;
130 int events; 241 int events;
131} ANPENDING; 242} ANPENDING;
132 243
133#ifdef EV_MULTIPLICITY 244#if EV_MULTIPLICITY
245
134struct ev_loop 246 struct ev_loop
135{ 247 {
248 ev_tstamp ev_rt_now;
249 #define ev_rt_now ((loop)->ev_rt_now)
136# define VAR(name,decl) decl 250 #define VAR(name,decl) decl;
137# include "ev_vars.h" 251 #include "ev_vars.h"
138}; 252 #undef VAR
253 };
254 #include "ev_wrap.h"
255
256 struct ev_loop default_loop_struct;
257 static struct ev_loop *default_loop;
258
139#else 259#else
260
261 ev_tstamp ev_rt_now;
140# define VAR(name,decl) static decl 262 #define VAR(name,decl) static decl;
141# include "ev_vars.h" 263 #include "ev_vars.h"
142#endif
143#undef VAR 264 #undef VAR
265
266 static int default_loop;
267
268#endif
144 269
145/*****************************************************************************/ 270/*****************************************************************************/
146 271
147inline ev_tstamp 272ev_tstamp
148ev_time (void) 273ev_time (void)
149{ 274{
150#if EV_USE_REALTIME 275#if EV_USE_REALTIME
151 struct timespec ts; 276 struct timespec ts;
152 clock_gettime (CLOCK_REALTIME, &ts); 277 clock_gettime (CLOCK_REALTIME, &ts);
171#endif 296#endif
172 297
173 return ev_time (); 298 return ev_time ();
174} 299}
175 300
301#if EV_MULTIPLICITY
176ev_tstamp 302ev_tstamp
177ev_now (EV_P) 303ev_now (EV_P)
178{ 304{
179 return rt_now; 305 return ev_rt_now;
180} 306}
307#endif
181 308
182#define array_roundsize(base,n) ((n) | 4 & ~3) 309#define array_roundsize(type,n) ((n) | 4 & ~3)
183 310
184#define array_needsize(base,cur,cnt,init) \ 311#define array_needsize(type,base,cur,cnt,init) \
185 if (expect_false ((cnt) > cur)) \ 312 if (expect_false ((cnt) > cur)) \
186 { \ 313 { \
187 int newcnt = cur; \ 314 int newcnt = cur; \
188 do \ 315 do \
189 { \ 316 { \
190 newcnt = array_roundsize (base, newcnt << 1); \ 317 newcnt = array_roundsize (type, newcnt << 1); \
191 } \ 318 } \
192 while ((cnt) > newcnt); \ 319 while ((cnt) > newcnt); \
193 \ 320 \
194 base = realloc (base, sizeof (*base) * (newcnt)); \ 321 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
195 init (base + cur, newcnt - cur); \ 322 init (base + cur, newcnt - cur); \
196 cur = newcnt; \ 323 cur = newcnt; \
197 } 324 }
325
326#define array_slim(type,stem) \
327 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
328 { \
329 stem ## max = array_roundsize (stem ## cnt >> 1); \
330 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
331 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
332 }
333
334#define array_free(stem, idx) \
335 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
198 336
199/*****************************************************************************/ 337/*****************************************************************************/
200 338
201static void 339static void
202anfds_init (ANFD *base, int count) 340anfds_init (ANFD *base, int count)
209 347
210 ++base; 348 ++base;
211 } 349 }
212} 350}
213 351
214static void 352void
215event (EV_P_ W w, int events) 353ev_feed_event (EV_P_ void *w, int revents)
216{ 354{
355 W w_ = (W)w;
356
217 if (w->pending) 357 if (w_->pending)
218 { 358 {
219 pendings [ABSPRI (w)][w->pending - 1].events |= events; 359 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
220 return; 360 return;
221 } 361 }
222 362
223 w->pending = ++pendingcnt [ABSPRI (w)]; 363 w_->pending = ++pendingcnt [ABSPRI (w_)];
224 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 364 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
225 pendings [ABSPRI (w)][w->pending - 1].w = w; 365 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
226 pendings [ABSPRI (w)][w->pending - 1].events = events; 366 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
227} 367}
228 368
229static void 369static void
230queue_events (EV_P_ W *events, int eventcnt, int type) 370queue_events (EV_P_ W *events, int eventcnt, int type)
231{ 371{
232 int i; 372 int i;
233 373
234 for (i = 0; i < eventcnt; ++i) 374 for (i = 0; i < eventcnt; ++i)
235 event (EV_A_ events [i], type); 375 ev_feed_event (EV_A_ events [i], type);
236} 376}
237 377
238static void 378inline void
239fd_event (EV_P_ int fd, int events) 379fd_event (EV_P_ int fd, int revents)
240{ 380{
241 ANFD *anfd = anfds + fd; 381 ANFD *anfd = anfds + fd;
242 struct ev_io *w; 382 struct ev_io *w;
243 383
244 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 384 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
245 { 385 {
246 int ev = w->events & events; 386 int ev = w->events & revents;
247 387
248 if (ev) 388 if (ev)
249 event (EV_A_ (W)w, ev); 389 ev_feed_event (EV_A_ (W)w, ev);
250 } 390 }
391}
392
393void
394ev_feed_fd_event (EV_P_ int fd, int revents)
395{
396 fd_event (EV_A_ fd, revents);
251} 397}
252 398
253/*****************************************************************************/ 399/*****************************************************************************/
254 400
255static void 401static void
266 int events = 0; 412 int events = 0;
267 413
268 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 414 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
269 events |= w->events; 415 events |= w->events;
270 416
417#if EV_SELECT_IS_WINSOCKET
418 if (events)
419 {
420 unsigned long argp;
421 anfd->handle = _get_osfhandle (fd);
422 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
423 }
424#endif
425
271 anfd->reify = 0; 426 anfd->reify = 0;
272 427
273 if (anfd->events != events)
274 {
275 method_modify (EV_A_ fd, anfd->events, events); 428 method_modify (EV_A_ fd, anfd->events, events);
276 anfd->events = events; 429 anfd->events = events;
277 }
278 } 430 }
279 431
280 fdchangecnt = 0; 432 fdchangecnt = 0;
281} 433}
282 434
283static void 435static void
284fd_change (EV_P_ int fd) 436fd_change (EV_P_ int fd)
285{ 437{
286 if (anfds [fd].reify || fdchangecnt < 0) 438 if (anfds [fd].reify)
287 return; 439 return;
288 440
289 anfds [fd].reify = 1; 441 anfds [fd].reify = 1;
290 442
291 ++fdchangecnt; 443 ++fdchangecnt;
292 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 444 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
293 fdchanges [fdchangecnt - 1] = fd; 445 fdchanges [fdchangecnt - 1] = fd;
294} 446}
295 447
296static void 448static void
297fd_kill (EV_P_ int fd) 449fd_kill (EV_P_ int fd)
299 struct ev_io *w; 451 struct ev_io *w;
300 452
301 while ((w = (struct ev_io *)anfds [fd].head)) 453 while ((w = (struct ev_io *)anfds [fd].head))
302 { 454 {
303 ev_io_stop (EV_A_ w); 455 ev_io_stop (EV_A_ w);
304 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 456 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305 } 457 }
458}
459
460static int
461fd_valid (int fd)
462{
463#ifdef _WIN32
464 return _get_osfhandle (fd) != -1;
465#else
466 return fcntl (fd, F_GETFD) != -1;
467#endif
306} 468}
307 469
308/* called on EBADF to verify fds */ 470/* called on EBADF to verify fds */
309static void 471static void
310fd_ebadf (EV_P) 472fd_ebadf (EV_P)
311{ 473{
312 int fd; 474 int fd;
313 475
314 for (fd = 0; fd < anfdmax; ++fd) 476 for (fd = 0; fd < anfdmax; ++fd)
315 if (anfds [fd].events) 477 if (anfds [fd].events)
316 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 478 if (!fd_valid (fd) == -1 && errno == EBADF)
317 fd_kill (EV_A_ fd); 479 fd_kill (EV_A_ fd);
318} 480}
319 481
320/* called on ENOMEM in select/poll to kill some fds and retry */ 482/* called on ENOMEM in select/poll to kill some fds and retry */
321static void 483static void
322fd_enomem (EV_P) 484fd_enomem (EV_P)
323{ 485{
324 int fd = anfdmax; 486 int fd;
325 487
326 while (fd--) 488 for (fd = anfdmax; fd--; )
327 if (anfds [fd].events) 489 if (anfds [fd].events)
328 { 490 {
329 close (fd);
330 fd_kill (EV_A_ fd); 491 fd_kill (EV_A_ fd);
331 return; 492 return;
332 } 493 }
333} 494}
334 495
496/* usually called after fork if method needs to re-arm all fds from scratch */
497static void
498fd_rearm_all (EV_P)
499{
500 int fd;
501
502 /* this should be highly optimised to not do anything but set a flag */
503 for (fd = 0; fd < anfdmax; ++fd)
504 if (anfds [fd].events)
505 {
506 anfds [fd].events = 0;
507 fd_change (EV_A_ fd);
508 }
509}
510
335/*****************************************************************************/ 511/*****************************************************************************/
336 512
337static void 513static void
338upheap (WT *timers, int k) 514upheap (WT *heap, int k)
339{ 515{
340 WT w = timers [k]; 516 WT w = heap [k];
341 517
342 while (k && timers [k >> 1]->at > w->at) 518 while (k && heap [k >> 1]->at > w->at)
343 { 519 {
344 timers [k] = timers [k >> 1]; 520 heap [k] = heap [k >> 1];
345 timers [k]->active = k + 1; 521 ((W)heap [k])->active = k + 1;
346 k >>= 1; 522 k >>= 1;
347 } 523 }
348 524
349 timers [k] = w; 525 heap [k] = w;
350 timers [k]->active = k + 1; 526 ((W)heap [k])->active = k + 1;
351 527
352} 528}
353 529
354static void 530static void
355downheap (WT *timers, int N, int k) 531downheap (WT *heap, int N, int k)
356{ 532{
357 WT w = timers [k]; 533 WT w = heap [k];
358 534
359 while (k < (N >> 1)) 535 while (k < (N >> 1))
360 { 536 {
361 int j = k << 1; 537 int j = k << 1;
362 538
363 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 539 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364 ++j; 540 ++j;
365 541
366 if (w->at <= timers [j]->at) 542 if (w->at <= heap [j]->at)
367 break; 543 break;
368 544
369 timers [k] = timers [j]; 545 heap [k] = heap [j];
370 timers [k]->active = k + 1; 546 ((W)heap [k])->active = k + 1;
371 k = j; 547 k = j;
372 } 548 }
373 549
374 timers [k] = w; 550 heap [k] = w;
375 timers [k]->active = k + 1; 551 ((W)heap [k])->active = k + 1;
552}
553
554inline void
555adjustheap (WT *heap, int N, int k)
556{
557 upheap (heap, k);
558 downheap (heap, N, k);
376} 559}
377 560
378/*****************************************************************************/ 561/*****************************************************************************/
379 562
380typedef struct 563typedef struct
381{ 564{
382 struct ev_watcher_list *head; 565 WL head;
383 sig_atomic_t volatile gotsig; 566 sig_atomic_t volatile gotsig;
384} ANSIG; 567} ANSIG;
385 568
386static ANSIG *signals; 569static ANSIG *signals;
387static int signalmax; 570static int signalmax;
388 571
389static int sigpipe [2]; 572static int sigpipe [2];
390static sig_atomic_t volatile gotsig; 573static sig_atomic_t volatile gotsig;
574static struct ev_io sigev;
391 575
392static void 576static void
393signals_init (ANSIG *base, int count) 577signals_init (ANSIG *base, int count)
394{ 578{
395 while (count--) 579 while (count--)
402} 586}
403 587
404static void 588static void
405sighandler (int signum) 589sighandler (int signum)
406{ 590{
591#if _WIN32
592 signal (signum, sighandler);
593#endif
594
407 signals [signum - 1].gotsig = 1; 595 signals [signum - 1].gotsig = 1;
408 596
409 if (!gotsig) 597 if (!gotsig)
410 { 598 {
411 int old_errno = errno; 599 int old_errno = errno;
413 write (sigpipe [1], &signum, 1); 601 write (sigpipe [1], &signum, 1);
414 errno = old_errno; 602 errno = old_errno;
415 } 603 }
416} 604}
417 605
606void
607ev_feed_signal_event (EV_P_ int signum)
608{
609 WL w;
610
611#if EV_MULTIPLICITY
612 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
613#endif
614
615 --signum;
616
617 if (signum < 0 || signum >= signalmax)
618 return;
619
620 signals [signum].gotsig = 0;
621
622 for (w = signals [signum].head; w; w = w->next)
623 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
624}
625
418static void 626static void
419sigcb (EV_P_ struct ev_io *iow, int revents) 627sigcb (EV_P_ struct ev_io *iow, int revents)
420{ 628{
421 struct ev_watcher_list *w;
422 int signum; 629 int signum;
423 630
424 read (sigpipe [0], &revents, 1); 631 read (sigpipe [0], &revents, 1);
425 gotsig = 0; 632 gotsig = 0;
426 633
427 for (signum = signalmax; signum--; ) 634 for (signum = signalmax; signum--; )
428 if (signals [signum].gotsig) 635 if (signals [signum].gotsig)
429 { 636 ev_feed_signal_event (EV_A_ signum + 1);
430 signals [signum].gotsig = 0; 637}
431 638
432 for (w = signals [signum].head; w; w = w->next) 639inline void
433 event (EV_A_ (W)w, EV_SIGNAL); 640fd_intern (int fd)
434 } 641{
642#ifdef _WIN32
643 int arg = 1;
644 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
645#else
646 fcntl (fd, F_SETFD, FD_CLOEXEC);
647 fcntl (fd, F_SETFL, O_NONBLOCK);
648#endif
435} 649}
436 650
437static void 651static void
438siginit (EV_P) 652siginit (EV_P)
439{ 653{
440#ifndef WIN32 654 fd_intern (sigpipe [0]);
441 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 655 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
448 656
449 ev_io_set (&sigev, sigpipe [0], EV_READ); 657 ev_io_set (&sigev, sigpipe [0], EV_READ);
450 ev_io_start (&sigev); 658 ev_io_start (EV_A_ &sigev);
451 ev_unref (EV_A); /* child watcher should not keep loop alive */ 659 ev_unref (EV_A); /* child watcher should not keep loop alive */
452} 660}
453 661
454/*****************************************************************************/ 662/*****************************************************************************/
455 663
664static struct ev_child *childs [PID_HASHSIZE];
665
456#ifndef WIN32 666#ifndef _WIN32
667
668static struct ev_signal childev;
457 669
458#ifndef WCONTINUED 670#ifndef WCONTINUED
459# define WCONTINUED 0 671# define WCONTINUED 0
460#endif 672#endif
461 673
465 struct ev_child *w; 677 struct ev_child *w;
466 678
467 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 679 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) 680 if (w->pid == pid || !w->pid)
469 { 681 {
470 w->priority = sw->priority; /* need to do it *now* */ 682 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
471 w->rpid = pid; 683 w->rpid = pid;
472 w->rstatus = status; 684 w->rstatus = status;
473 event (EV_A_ (W)w, EV_CHILD); 685 ev_feed_event (EV_A_ (W)w, EV_CHILD);
474 } 686 }
475} 687}
476 688
477static void 689static void
478childcb (EV_P_ struct ev_signal *sw, int revents) 690childcb (EV_P_ struct ev_signal *sw, int revents)
480 int pid, status; 692 int pid, status;
481 693
482 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 694 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
483 { 695 {
484 /* make sure we are called again until all childs have been reaped */ 696 /* make sure we are called again until all childs have been reaped */
485 event (EV_A_ (W)sw, EV_SIGNAL); 697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
486 698
487 child_reap (EV_A_ sw, pid, pid, status); 699 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 */ 700 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
489 } 701 }
490} 702}
497# include "ev_kqueue.c" 709# include "ev_kqueue.c"
498#endif 710#endif
499#if EV_USE_EPOLL 711#if EV_USE_EPOLL
500# include "ev_epoll.c" 712# include "ev_epoll.c"
501#endif 713#endif
502#if EV_USEV_POLL 714#if EV_USE_POLL
503# include "ev_poll.c" 715# include "ev_poll.c"
504#endif 716#endif
505#if EV_USE_SELECT 717#if EV_USE_SELECT
506# include "ev_select.c" 718# include "ev_select.c"
507#endif 719#endif
520 732
521/* return true if we are running with elevated privileges and should ignore env variables */ 733/* return true if we are running with elevated privileges and should ignore env variables */
522static int 734static int
523enable_secure (void) 735enable_secure (void)
524{ 736{
525#ifdef WIN32 737#ifdef _WIN32
526 return 0; 738 return 0;
527#else 739#else
528 return getuid () != geteuid () 740 return getuid () != geteuid ()
529 || getgid () != getegid (); 741 || getgid () != getegid ();
530#endif 742#endif
534ev_method (EV_P) 746ev_method (EV_P)
535{ 747{
536 return method; 748 return method;
537} 749}
538 750
539int 751static void
540ev_init (EV_P_ int methods) 752loop_init (EV_P_ int methods)
541{ 753{
542#ifdef EV_MULTIPLICITY
543 memset (loop, 0, sizeof (struct ev_loop));
544#endif
545
546 if (!method) 754 if (!method)
547 { 755 {
548#if EV_USE_MONOTONIC 756#if EV_USE_MONOTONIC
549 { 757 {
550 struct timespec ts; 758 struct timespec ts;
551 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 759 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
552 have_monotonic = 1; 760 have_monotonic = 1;
553 } 761 }
554#endif 762#endif
555 763
556 rt_now = ev_time (); 764 ev_rt_now = ev_time ();
557 mn_now = get_clock (); 765 mn_now = get_clock ();
558 now_floor = mn_now; 766 now_floor = mn_now;
559 diff = rt_now - mn_now; 767 rtmn_diff = ev_rt_now - mn_now;
560
561 if (pipe (sigpipe))
562 return 0;
563 768
564 if (methods == EVMETHOD_AUTO) 769 if (methods == EVMETHOD_AUTO)
565 if (!enable_secure () && getenv ("LIBmethodS")) 770 if (!enable_secure () && getenv ("LIBEV_METHODS"))
566 methods = atoi (getenv ("LIBmethodS")); 771 methods = atoi (getenv ("LIBEV_METHODS"));
567 else 772 else
568 methods = EVMETHOD_ANY; 773 methods = EVMETHOD_ANY;
569 774
570 method = 0; 775 method = 0;
571#if EV_USE_KQUEUE 776#if EV_USE_KQUEUE
572 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 777 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
573#endif 778#endif
574#if EV_USE_EPOLL 779#if EV_USE_EPOLL
575 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 780 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
576#endif 781#endif
577#if EV_USEV_POLL 782#if EV_USE_POLL
578 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 783 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
579#endif 784#endif
580#if EV_USE_SELECT 785#if EV_USE_SELECT
581 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 786 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
582#endif 787#endif
583 788
789 ev_init (&sigev, sigcb);
790 ev_set_priority (&sigev, EV_MAXPRI);
791 }
792}
793
794void
795loop_destroy (EV_P)
796{
797 int i;
798
799#if EV_USE_KQUEUE
800 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
801#endif
802#if EV_USE_EPOLL
803 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
804#endif
805#if EV_USE_POLL
806 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
807#endif
808#if EV_USE_SELECT
809 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
810#endif
811
812 for (i = NUMPRI; i--; )
813 array_free (pending, [i]);
814
815 /* have to use the microsoft-never-gets-it-right macro */
816 array_free (fdchange, EMPTY);
817 array_free (timer, EMPTY);
818#if EV_PERIODICS
819 array_free (periodic, EMPTY);
820#endif
821 array_free (idle, EMPTY);
822 array_free (prepare, EMPTY);
823 array_free (check, EMPTY);
824
825 method = 0;
826}
827
828static void
829loop_fork (EV_P)
830{
831#if EV_USE_EPOLL
832 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
833#endif
834#if EV_USE_KQUEUE
835 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
836#endif
837
838 if (ev_is_active (&sigev))
839 {
840 /* default loop */
841
842 ev_ref (EV_A);
843 ev_io_stop (EV_A_ &sigev);
844 close (sigpipe [0]);
845 close (sigpipe [1]);
846
847 while (pipe (sigpipe))
848 syserr ("(libev) error creating pipe");
849
850 siginit (EV_A);
851 }
852
853 postfork = 0;
854}
855
856#if EV_MULTIPLICITY
857struct ev_loop *
858ev_loop_new (int methods)
859{
860 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
861
862 memset (loop, 0, sizeof (struct ev_loop));
863
864 loop_init (EV_A_ methods);
865
866 if (ev_method (EV_A))
867 return loop;
868
869 return 0;
870}
871
872void
873ev_loop_destroy (EV_P)
874{
875 loop_destroy (EV_A);
876 ev_free (loop);
877}
878
879void
880ev_loop_fork (EV_P)
881{
882 postfork = 1;
883}
884
885#endif
886
887#if EV_MULTIPLICITY
888struct ev_loop *
889#else
890int
891#endif
892ev_default_loop (int methods)
893{
894 if (sigpipe [0] == sigpipe [1])
895 if (pipe (sigpipe))
896 return 0;
897
898 if (!default_loop)
899 {
900#if EV_MULTIPLICITY
901 struct ev_loop *loop = default_loop = &default_loop_struct;
902#else
903 default_loop = 1;
904#endif
905
906 loop_init (EV_A_ methods);
907
584 if (method) 908 if (ev_method (EV_A))
585 { 909 {
586 ev_watcher_init (&sigev, sigcb);
587 ev_set_priority (&sigev, EV_MAXPRI);
588 siginit (EV_A); 910 siginit (EV_A);
589 911
590#ifndef WIN32 912#ifndef _WIN32
591 ev_signal_init (&childev, childcb, SIGCHLD); 913 ev_signal_init (&childev, childcb, SIGCHLD);
592 ev_set_priority (&childev, EV_MAXPRI); 914 ev_set_priority (&childev, EV_MAXPRI);
593 ev_signal_start (EV_A_ &childev); 915 ev_signal_start (EV_A_ &childev);
594 ev_unref (EV_A); /* child watcher should not keep loop alive */ 916 ev_unref (EV_A); /* child watcher should not keep loop alive */
595#endif 917#endif
596 } 918 }
919 else
920 default_loop = 0;
597 } 921 }
598 922
599 return method; 923 return default_loop;
924}
925
926void
927ev_default_destroy (void)
928{
929#if EV_MULTIPLICITY
930 struct ev_loop *loop = default_loop;
931#endif
932
933#ifndef _WIN32
934 ev_ref (EV_A); /* child watcher */
935 ev_signal_stop (EV_A_ &childev);
936#endif
937
938 ev_ref (EV_A); /* signal watcher */
939 ev_io_stop (EV_A_ &sigev);
940
941 close (sigpipe [0]); sigpipe [0] = 0;
942 close (sigpipe [1]); sigpipe [1] = 0;
943
944 loop_destroy (EV_A);
945}
946
947void
948ev_default_fork (void)
949{
950#if EV_MULTIPLICITY
951 struct ev_loop *loop = default_loop;
952#endif
953
954 if (method)
955 postfork = 1;
600} 956}
601 957
602/*****************************************************************************/ 958/*****************************************************************************/
603 959
604void 960static int
605ev_fork_prepare (void) 961any_pending (EV_P)
606{ 962{
607 /* nop */ 963 int pri;
608}
609 964
610void 965 for (pri = NUMPRI; pri--; )
611ev_fork_parent (void) 966 if (pendingcnt [pri])
612{ 967 return 1;
613 /* nop */
614}
615 968
616void 969 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} 970}
630
631/*****************************************************************************/
632 971
633static void 972static void
634call_pending (EV_P) 973call_pending (EV_P)
635{ 974{
636 int pri; 975 int pri;
641 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 980 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
642 981
643 if (p->w) 982 if (p->w)
644 { 983 {
645 p->w->pending = 0; 984 p->w->pending = 0;
646 p->w->cb (EV_A_ p->w, p->events); 985 EV_CB_INVOKE (p->w, p->events);
647 } 986 }
648 } 987 }
649} 988}
650 989
651static void 990static void
652timers_reify (EV_P) 991timers_reify (EV_P)
653{ 992{
654 while (timercnt && timers [0]->at <= mn_now) 993 while (timercnt && ((WT)timers [0])->at <= mn_now)
655 { 994 {
656 struct ev_timer *w = timers [0]; 995 struct ev_timer *w = timers [0];
996
997 assert (("inactive timer on timer heap detected", ev_is_active (w)));
657 998
658 /* first reschedule or stop timer */ 999 /* first reschedule or stop timer */
659 if (w->repeat) 1000 if (w->repeat)
660 { 1001 {
661 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1002 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1003
662 w->at = mn_now + w->repeat; 1004 ((WT)w)->at += w->repeat;
1005 if (((WT)w)->at < mn_now)
1006 ((WT)w)->at = mn_now;
1007
663 downheap ((WT *)timers, timercnt, 0); 1008 downheap ((WT *)timers, timercnt, 0);
664 } 1009 }
665 else 1010 else
666 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1011 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
667 1012
668 event ((W)w, EV_TIMEOUT); 1013 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
669 } 1014 }
670} 1015}
671 1016
1017#if EV_PERIODICS
672static void 1018static void
673periodics_reify (EV_P) 1019periodics_reify (EV_P)
674{ 1020{
675 while (periodiccnt && periodics [0]->at <= rt_now) 1021 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
676 { 1022 {
677 struct ev_periodic *w = periodics [0]; 1023 struct ev_periodic *w = periodics [0];
678 1024
1025 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1026
679 /* first reschedule or stop timer */ 1027 /* first reschedule or stop timer */
680 if (w->interval) 1028 if (w->reschedule_cb)
681 { 1029 {
1030 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1031
1032 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1033 downheap ((WT *)periodics, periodiccnt, 0);
1034 }
1035 else if (w->interval)
1036 {
682 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1037 ((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)); 1038 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); 1039 downheap ((WT *)periodics, periodiccnt, 0);
685 } 1040 }
686 else 1041 else
687 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1042 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
688 1043
689 event (EV_A_ (W)w, EV_PERIODIC); 1044 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
690 } 1045 }
691} 1046}
692 1047
693static void 1048static void
694periodics_reschedule (EV_P_ ev_tstamp diff) 1049periodics_reschedule (EV_P)
695{ 1050{
696 int i; 1051 int i;
697 1052
698 /* adjust periodics after time jump */ 1053 /* adjust periodics after time jump */
699 for (i = 0; i < periodiccnt; ++i) 1054 for (i = 0; i < periodiccnt; ++i)
700 { 1055 {
701 struct ev_periodic *w = periodics [i]; 1056 struct ev_periodic *w = periodics [i];
702 1057
1058 if (w->reschedule_cb)
1059 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
703 if (w->interval) 1060 else if (w->interval)
704 {
705 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1061 ((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 } 1062 }
1063
1064 /* now rebuild the heap */
1065 for (i = periodiccnt >> 1; i--; )
1066 downheap ((WT *)periodics, periodiccnt, i);
716} 1067}
1068#endif
717 1069
718inline int 1070inline int
719time_update_monotonic (EV_P) 1071time_update_monotonic (EV_P)
720{ 1072{
721 mn_now = get_clock (); 1073 mn_now = get_clock ();
722 1074
723 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1075 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
724 { 1076 {
725 rt_now = mn_now + diff; 1077 ev_rt_now = rtmn_diff + mn_now;
726 return 0; 1078 return 0;
727 } 1079 }
728 else 1080 else
729 { 1081 {
730 now_floor = mn_now; 1082 now_floor = mn_now;
731 rt_now = ev_time (); 1083 ev_rt_now = ev_time ();
732 return 1; 1084 return 1;
733 } 1085 }
734} 1086}
735 1087
736static void 1088static void
741#if EV_USE_MONOTONIC 1093#if EV_USE_MONOTONIC
742 if (expect_true (have_monotonic)) 1094 if (expect_true (have_monotonic))
743 { 1095 {
744 if (time_update_monotonic (EV_A)) 1096 if (time_update_monotonic (EV_A))
745 { 1097 {
746 ev_tstamp odiff = diff; 1098 ev_tstamp odiff = rtmn_diff;
747 1099
748 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1100 for (i = 4; --i; ) /* loop a few times, before making important decisions */
749 { 1101 {
750 diff = rt_now - mn_now; 1102 rtmn_diff = ev_rt_now - mn_now;
751 1103
752 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1104 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
753 return; /* all is well */ 1105 return; /* all is well */
754 1106
755 rt_now = ev_time (); 1107 ev_rt_now = ev_time ();
756 mn_now = get_clock (); 1108 mn_now = get_clock ();
757 now_floor = mn_now; 1109 now_floor = mn_now;
758 } 1110 }
759 1111
1112# if EV_PERIODICS
760 periodics_reschedule (EV_A_ diff - odiff); 1113 periodics_reschedule (EV_A);
1114# endif
761 /* no timer adjustment, as the monotonic clock doesn't jump */ 1115 /* no timer adjustment, as the monotonic clock doesn't jump */
1116 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
762 } 1117 }
763 } 1118 }
764 else 1119 else
765#endif 1120#endif
766 { 1121 {
767 rt_now = ev_time (); 1122 ev_rt_now = ev_time ();
768 1123
769 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1124 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
770 { 1125 {
1126#if EV_PERIODICS
771 periodics_reschedule (EV_A_ rt_now - mn_now); 1127 periodics_reschedule (EV_A);
1128#endif
772 1129
773 /* adjust timers. this is easy, as the offset is the same for all */ 1130 /* adjust timers. this is easy, as the offset is the same for all */
774 for (i = 0; i < timercnt; ++i) 1131 for (i = 0; i < timercnt; ++i)
775 timers [i]->at += diff; 1132 ((WT)timers [i])->at += ev_rt_now - mn_now;
776 } 1133 }
777 1134
778 mn_now = rt_now; 1135 mn_now = ev_rt_now;
779 } 1136 }
780} 1137}
781 1138
782void 1139void
783ev_ref (EV_P) 1140ev_ref (EV_P)
806 { 1163 {
807 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1164 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
808 call_pending (EV_A); 1165 call_pending (EV_A);
809 } 1166 }
810 1167
1168 /* we might have forked, so reify kernel state if necessary */
1169 if (expect_false (postfork))
1170 loop_fork (EV_A);
1171
811 /* update fd-related kernel structures */ 1172 /* update fd-related kernel structures */
812 fd_reify (EV_A); 1173 fd_reify (EV_A);
813 1174
814 /* calculate blocking time */ 1175 /* calculate blocking time */
815 1176
816 /* we only need this for !monotonic clockor timers, but as we basically 1177 /* we only need this for !monotonic clock or timers, but as we basically
817 always have timers, we just calculate it always */ 1178 always have timers, we just calculate it always */
818#if EV_USE_MONOTONIC 1179#if EV_USE_MONOTONIC
819 if (expect_true (have_monotonic)) 1180 if (expect_true (have_monotonic))
820 time_update_monotonic (EV_A); 1181 time_update_monotonic (EV_A);
821 else 1182 else
822#endif 1183#endif
823 { 1184 {
824 rt_now = ev_time (); 1185 ev_rt_now = ev_time ();
825 mn_now = rt_now; 1186 mn_now = ev_rt_now;
826 } 1187 }
827 1188
828 if (flags & EVLOOP_NONBLOCK || idlecnt) 1189 if (flags & EVLOOP_NONBLOCK || idlecnt)
829 block = 0.; 1190 block = 0.;
830 else 1191 else
831 { 1192 {
832 block = MAX_BLOCKTIME; 1193 block = MAX_BLOCKTIME;
833 1194
834 if (timercnt) 1195 if (timercnt)
835 { 1196 {
836 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1197 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
837 if (block > to) block = to; 1198 if (block > to) block = to;
838 } 1199 }
839 1200
1201#if EV_PERIODICS
840 if (periodiccnt) 1202 if (periodiccnt)
841 { 1203 {
842 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1204 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
843 if (block > to) block = to; 1205 if (block > to) block = to;
844 } 1206 }
1207#endif
845 1208
846 if (block < 0.) block = 0.; 1209 if (block < 0.) block = 0.;
847 } 1210 }
848 1211
849 method_poll (EV_A_ block); 1212 method_poll (EV_A_ block);
850 1213
851 /* update rt_now, do magic */ 1214 /* update ev_rt_now, do magic */
852 time_update (EV_A); 1215 time_update (EV_A);
853 1216
854 /* queue pending timers and reschedule them */ 1217 /* queue pending timers and reschedule them */
855 timers_reify (EV_A); /* relative timers called last */ 1218 timers_reify (EV_A); /* relative timers called last */
1219#if EV_PERIODICS
856 periodics_reify (EV_A); /* absolute timers called first */ 1220 periodics_reify (EV_A); /* absolute timers called first */
1221#endif
857 1222
858 /* queue idle watchers unless io or timers are pending */ 1223 /* queue idle watchers unless io or timers are pending */
859 if (!pendingcnt) 1224 if (idlecnt && !any_pending (EV_A))
860 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1225 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
861 1226
862 /* queue check watchers, to be executed first */ 1227 /* queue check watchers, to be executed first */
863 if (checkcnt) 1228 if (checkcnt)
864 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1229 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
939 return; 1304 return;
940 1305
941 assert (("ev_io_start called with negative fd", fd >= 0)); 1306 assert (("ev_io_start called with negative fd", fd >= 0));
942 1307
943 ev_start (EV_A_ (W)w, 1); 1308 ev_start (EV_A_ (W)w, 1);
944 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1309 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
945 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1310 wlist_add ((WL *)&anfds[fd].head, (WL)w);
946 1311
947 fd_change (EV_A_ fd); 1312 fd_change (EV_A_ fd);
948} 1313}
949 1314
952{ 1317{
953 ev_clear_pending (EV_A_ (W)w); 1318 ev_clear_pending (EV_A_ (W)w);
954 if (!ev_is_active (w)) 1319 if (!ev_is_active (w))
955 return; 1320 return;
956 1321
1322 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1323
957 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1324 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
958 ev_stop (EV_A_ (W)w); 1325 ev_stop (EV_A_ (W)w);
959 1326
960 fd_change (EV_A_ w->fd); 1327 fd_change (EV_A_ w->fd);
961} 1328}
964ev_timer_start (EV_P_ struct ev_timer *w) 1331ev_timer_start (EV_P_ struct ev_timer *w)
965{ 1332{
966 if (ev_is_active (w)) 1333 if (ev_is_active (w))
967 return; 1334 return;
968 1335
969 w->at += mn_now; 1336 ((WT)w)->at += mn_now;
970 1337
971 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1338 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
972 1339
973 ev_start (EV_A_ (W)w, ++timercnt); 1340 ev_start (EV_A_ (W)w, ++timercnt);
974 array_needsize (timers, timermax, timercnt, ); 1341 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
975 timers [timercnt - 1] = w; 1342 timers [timercnt - 1] = w;
976 upheap ((WT *)timers, timercnt - 1); 1343 upheap ((WT *)timers, timercnt - 1);
1344
1345 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
977} 1346}
978 1347
979void 1348void
980ev_timer_stop (EV_P_ struct ev_timer *w) 1349ev_timer_stop (EV_P_ struct ev_timer *w)
981{ 1350{
982 ev_clear_pending (EV_A_ (W)w); 1351 ev_clear_pending (EV_A_ (W)w);
983 if (!ev_is_active (w)) 1352 if (!ev_is_active (w))
984 return; 1353 return;
985 1354
1355 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1356
986 if (w->active < timercnt--) 1357 if (((W)w)->active < timercnt--)
987 { 1358 {
988 timers [w->active - 1] = timers [timercnt]; 1359 timers [((W)w)->active - 1] = timers [timercnt];
989 downheap ((WT *)timers, timercnt, w->active - 1); 1360 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
990 } 1361 }
991 1362
992 w->at = w->repeat; 1363 ((WT)w)->at -= mn_now;
993 1364
994 ev_stop (EV_A_ (W)w); 1365 ev_stop (EV_A_ (W)w);
995} 1366}
996 1367
997void 1368void
999{ 1370{
1000 if (ev_is_active (w)) 1371 if (ev_is_active (w))
1001 { 1372 {
1002 if (w->repeat) 1373 if (w->repeat)
1003 { 1374 {
1004 w->at = mn_now + w->repeat; 1375 ((WT)w)->at = mn_now + w->repeat;
1005 downheap ((WT *)timers, timercnt, w->active - 1); 1376 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1006 } 1377 }
1007 else 1378 else
1008 ev_timer_stop (EV_A_ w); 1379 ev_timer_stop (EV_A_ w);
1009 } 1380 }
1010 else if (w->repeat) 1381 else if (w->repeat)
1011 ev_timer_start (EV_A_ w); 1382 ev_timer_start (EV_A_ w);
1012} 1383}
1013 1384
1385#if EV_PERIODICS
1014void 1386void
1015ev_periodic_start (EV_P_ struct ev_periodic *w) 1387ev_periodic_start (EV_P_ struct ev_periodic *w)
1016{ 1388{
1017 if (ev_is_active (w)) 1389 if (ev_is_active (w))
1018 return; 1390 return;
1019 1391
1392 if (w->reschedule_cb)
1393 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1394 else if (w->interval)
1395 {
1020 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1396 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 */ 1397 /* 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; 1398 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1399 }
1025 1400
1026 ev_start (EV_A_ (W)w, ++periodiccnt); 1401 ev_start (EV_A_ (W)w, ++periodiccnt);
1027 array_needsize (periodics, periodicmax, periodiccnt, ); 1402 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1028 periodics [periodiccnt - 1] = w; 1403 periodics [periodiccnt - 1] = w;
1029 upheap ((WT *)periodics, periodiccnt - 1); 1404 upheap ((WT *)periodics, periodiccnt - 1);
1405
1406 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1030} 1407}
1031 1408
1032void 1409void
1033ev_periodic_stop (EV_P_ struct ev_periodic *w) 1410ev_periodic_stop (EV_P_ struct ev_periodic *w)
1034{ 1411{
1035 ev_clear_pending (EV_A_ (W)w); 1412 ev_clear_pending (EV_A_ (W)w);
1036 if (!ev_is_active (w)) 1413 if (!ev_is_active (w))
1037 return; 1414 return;
1038 1415
1416 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1417
1039 if (w->active < periodiccnt--) 1418 if (((W)w)->active < periodiccnt--)
1040 { 1419 {
1041 periodics [w->active - 1] = periodics [periodiccnt]; 1420 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1042 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1421 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1043 } 1422 }
1044 1423
1424 ev_stop (EV_A_ (W)w);
1425}
1426
1427void
1428ev_periodic_again (EV_P_ struct ev_periodic *w)
1429{
1430 /* TODO: use adjustheap and recalculation */
1431 ev_periodic_stop (EV_A_ w);
1432 ev_periodic_start (EV_A_ w);
1433}
1434#endif
1435
1436void
1437ev_idle_start (EV_P_ struct ev_idle *w)
1438{
1439 if (ev_is_active (w))
1440 return;
1441
1442 ev_start (EV_A_ (W)w, ++idlecnt);
1443 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1444 idles [idlecnt - 1] = w;
1445}
1446
1447void
1448ev_idle_stop (EV_P_ struct ev_idle *w)
1449{
1450 ev_clear_pending (EV_A_ (W)w);
1451 if (!ev_is_active (w))
1452 return;
1453
1454 idles [((W)w)->active - 1] = idles [--idlecnt];
1455 ev_stop (EV_A_ (W)w);
1456}
1457
1458void
1459ev_prepare_start (EV_P_ struct ev_prepare *w)
1460{
1461 if (ev_is_active (w))
1462 return;
1463
1464 ev_start (EV_A_ (W)w, ++preparecnt);
1465 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1466 prepares [preparecnt - 1] = w;
1467}
1468
1469void
1470ev_prepare_stop (EV_P_ struct ev_prepare *w)
1471{
1472 ev_clear_pending (EV_A_ (W)w);
1473 if (!ev_is_active (w))
1474 return;
1475
1476 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1477 ev_stop (EV_A_ (W)w);
1478}
1479
1480void
1481ev_check_start (EV_P_ struct ev_check *w)
1482{
1483 if (ev_is_active (w))
1484 return;
1485
1486 ev_start (EV_A_ (W)w, ++checkcnt);
1487 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1488 checks [checkcnt - 1] = w;
1489}
1490
1491void
1492ev_check_stop (EV_P_ struct ev_check *w)
1493{
1494 ev_clear_pending (EV_A_ (W)w);
1495 if (!ev_is_active (w))
1496 return;
1497
1498 checks [((W)w)->active - 1] = checks [--checkcnt];
1045 ev_stop (EV_A_ (W)w); 1499 ev_stop (EV_A_ (W)w);
1046} 1500}
1047 1501
1048#ifndef SA_RESTART 1502#ifndef SA_RESTART
1049# define SA_RESTART 0 1503# define SA_RESTART 0
1050#endif 1504#endif
1051 1505
1052void 1506void
1053ev_signal_start (EV_P_ struct ev_signal *w) 1507ev_signal_start (EV_P_ struct ev_signal *w)
1054{ 1508{
1509#if EV_MULTIPLICITY
1510 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1511#endif
1055 if (ev_is_active (w)) 1512 if (ev_is_active (w))
1056 return; 1513 return;
1057 1514
1058 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1515 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1059 1516
1060 ev_start (EV_A_ (W)w, 1); 1517 ev_start (EV_A_ (W)w, 1);
1061 array_needsize (signals, signalmax, w->signum, signals_init); 1518 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1062 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1519 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1063 1520
1064 if (!w->next) 1521 if (!((WL)w)->next)
1065 { 1522 {
1523#if _WIN32
1524 signal (w->signum, sighandler);
1525#else
1066 struct sigaction sa; 1526 struct sigaction sa;
1067 sa.sa_handler = sighandler; 1527 sa.sa_handler = sighandler;
1068 sigfillset (&sa.sa_mask); 1528 sigfillset (&sa.sa_mask);
1069 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1529 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1070 sigaction (w->signum, &sa, 0); 1530 sigaction (w->signum, &sa, 0);
1531#endif
1071 } 1532 }
1072} 1533}
1073 1534
1074void 1535void
1075ev_signal_stop (EV_P_ struct ev_signal *w) 1536ev_signal_stop (EV_P_ struct ev_signal *w)
1084 if (!signals [w->signum - 1].head) 1545 if (!signals [w->signum - 1].head)
1085 signal (w->signum, SIG_DFL); 1546 signal (w->signum, SIG_DFL);
1086} 1547}
1087 1548
1088void 1549void
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) 1550ev_child_start (EV_P_ struct ev_child *w)
1156{ 1551{
1552#if EV_MULTIPLICITY
1553 assert (("child watchers are only supported in the default loop", loop == default_loop));
1554#endif
1157 if (ev_is_active (w)) 1555 if (ev_is_active (w))
1158 return; 1556 return;
1159 1557
1160 ev_start (EV_A_ (W)w, 1); 1558 ev_start (EV_A_ (W)w, 1);
1161 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1559 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1163 1561
1164void 1562void
1165ev_child_stop (EV_P_ struct ev_child *w) 1563ev_child_stop (EV_P_ struct ev_child *w)
1166{ 1564{
1167 ev_clear_pending (EV_A_ (W)w); 1565 ev_clear_pending (EV_A_ (W)w);
1168 if (ev_is_active (w)) 1566 if (!ev_is_active (w))
1169 return; 1567 return;
1170 1568
1171 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1569 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1172 ev_stop (EV_A_ (W)w); 1570 ev_stop (EV_A_ (W)w);
1173} 1571}
1188 void (*cb)(int revents, void *arg) = once->cb; 1586 void (*cb)(int revents, void *arg) = once->cb;
1189 void *arg = once->arg; 1587 void *arg = once->arg;
1190 1588
1191 ev_io_stop (EV_A_ &once->io); 1589 ev_io_stop (EV_A_ &once->io);
1192 ev_timer_stop (EV_A_ &once->to); 1590 ev_timer_stop (EV_A_ &once->to);
1193 free (once); 1591 ev_free (once);
1194 1592
1195 cb (revents, arg); 1593 cb (revents, arg);
1196} 1594}
1197 1595
1198static void 1596static void
1208} 1606}
1209 1607
1210void 1608void
1211ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1609ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1212{ 1610{
1213 struct ev_once *once = malloc (sizeof (struct ev_once)); 1611 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1214 1612
1215 if (!once) 1613 if (!once)
1216 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1217 else 1615 else
1218 { 1616 {
1219 once->cb = cb; 1617 once->cb = cb;
1220 once->arg = arg; 1618 once->arg = arg;
1221 1619
1222 ev_watcher_init (&once->io, once_cb_io); 1620 ev_init (&once->io, once_cb_io);
1223 if (fd >= 0) 1621 if (fd >= 0)
1224 { 1622 {
1225 ev_io_set (&once->io, fd, events); 1623 ev_io_set (&once->io, fd, events);
1226 ev_io_start (EV_A_ &once->io); 1624 ev_io_start (EV_A_ &once->io);
1227 } 1625 }
1228 1626
1229 ev_watcher_init (&once->to, once_cb_to); 1627 ev_init (&once->to, once_cb_to);
1230 if (timeout >= 0.) 1628 if (timeout >= 0.)
1231 { 1629 {
1232 ev_timer_set (&once->to, timeout, 0.); 1630 ev_timer_set (&once->to, timeout, 0.);
1233 ev_timer_start (EV_A_ &once->to); 1631 ev_timer_start (EV_A_ &once->to);
1234 } 1632 }
1235 } 1633 }
1236} 1634}
1237 1635
1238/*****************************************************************************/ 1636#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} 1637}
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 1638#endif
1294 1639
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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