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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 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
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 172static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 173
122static int have_monotonic; /* runtime */ 174#ifdef _WIN32
123 175# include "ev_win32.c"
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132static int vec_max;
133#endif
134
135#if EV_USEV_POLL
136static struct pollfd *polls;
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif
141
142#if EV_USE_EPOLL
143static int epoll_fd = -1;
144
145static struct epoll_event *events;
146static int eventmax;
147#endif
148
149#if EV_USE_KQUEUE
150static int kqueue_fd;
151static struct kevent *kqueue_changes;
152static int kqueue_changemax, kqueue_changecnt;
153static struct kevent *kqueue_events;
154static int kqueue_eventmax;
155#endif 176#endif
156 177
157/*****************************************************************************/ 178/*****************************************************************************/
158 179
159inline ev_tstamp 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
228typedef struct
229{
230 WL head;
231 unsigned char events;
232 unsigned char reify;
233#if EV_SELECT_IS_WINSOCKET
234 SOCKET handle;
235#endif
236} ANFD;
237
238typedef struct
239{
240 W w;
241 int events;
242} ANPENDING;
243
244#if EV_MULTIPLICITY
245
246 struct ev_loop
247 {
248 ev_tstamp ev_rt_now;
249 #define ev_rt_now ((loop)->ev_rt_now)
250 #define VAR(name,decl) decl;
251 #include "ev_vars.h"
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
259#else
260
261 ev_tstamp ev_rt_now;
262 #define VAR(name,decl) static decl;
263 #include "ev_vars.h"
264 #undef VAR
265
266 static int default_loop;
267
268#endif
269
270/*****************************************************************************/
271
272ev_tstamp
160ev_time (void) 273ev_time (void)
161{ 274{
162#if EV_USE_REALTIME 275#if EV_USE_REALTIME
163 struct timespec ts; 276 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 277 clock_gettime (CLOCK_REALTIME, &ts);
183#endif 296#endif
184 297
185 return ev_time (); 298 return ev_time ();
186} 299}
187 300
301#if EV_MULTIPLICITY
188ev_tstamp 302ev_tstamp
189ev_now (EV_P) 303ev_now (EV_P)
190{ 304{
191 return rt_now; 305 return ev_rt_now;
192} 306}
307#endif
193 308
194#define array_roundsize(base,n) ((n) | 4 & ~3) 309#define array_roundsize(type,n) ((n) | 4 & ~3)
195 310
196#define array_needsize(base,cur,cnt,init) \ 311#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 312 if (expect_false ((cnt) > cur)) \
198 { \ 313 { \
199 int newcnt = cur; \ 314 int newcnt = cur; \
200 do \ 315 do \
201 { \ 316 { \
202 newcnt = array_roundsize (base, newcnt << 1); \ 317 newcnt = array_roundsize (type, newcnt << 1); \
203 } \ 318 } \
204 while ((cnt) > newcnt); \ 319 while ((cnt) > newcnt); \
205 \ 320 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 321 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207 init (base + cur, newcnt - cur); \ 322 init (base + cur, newcnt - cur); \
208 cur = newcnt; \ 323 cur = newcnt; \
209 } 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;
210 336
211/*****************************************************************************/ 337/*****************************************************************************/
212
213typedef struct
214{
215 struct ev_watcher_list *head;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219
220static ANFD *anfds;
221static int anfdmax;
222 338
223static void 339static void
224anfds_init (ANFD *base, int count) 340anfds_init (ANFD *base, int count)
225{ 341{
226 while (count--) 342 while (count--)
231 347
232 ++base; 348 ++base;
233 } 349 }
234} 350}
235 351
236typedef struct 352void
237{
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245static void
246event (EV_P_ W w, int events) 353ev_feed_event (EV_P_ void *w, int revents)
247{ 354{
355 W w_ = (W)w;
356
248 if (w->pending) 357 if (w_->pending)
249 { 358 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events; 359 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251 return; 360 return;
252 } 361 }
253 362
254 w->pending = ++pendingcnt [ABSPRI (w)]; 363 w_->pending = ++pendingcnt [ABSPRI (w_)];
255 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));
256 pendings [ABSPRI (w)][w->pending - 1].w = w; 365 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257 pendings [ABSPRI (w)][w->pending - 1].events = events; 366 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258} 367}
259 368
260static void 369static void
261queue_events (EV_P_ W *events, int eventcnt, int type) 370queue_events (EV_P_ W *events, int eventcnt, int type)
262{ 371{
263 int i; 372 int i;
264 373
265 for (i = 0; i < eventcnt; ++i) 374 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type); 375 ev_feed_event (EV_A_ events [i], type);
267} 376}
268 377
269static void 378inline void
270fd_event (EV_P_ int fd, int events) 379fd_event (EV_P_ int fd, int revents)
271{ 380{
272 ANFD *anfd = anfds + fd; 381 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 382 struct ev_io *w;
274 383
275 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)
276 { 385 {
277 int ev = w->events & events; 386 int ev = w->events & revents;
278 387
279 if (ev) 388 if (ev)
280 event (EV_A_ (W)w, ev); 389 ev_feed_event (EV_A_ (W)w, ev);
281 } 390 }
391}
392
393void
394ev_feed_fd_event (EV_P_ int fd, int revents)
395{
396 fd_event (EV_A_ fd, revents);
282} 397}
283 398
284/*****************************************************************************/ 399/*****************************************************************************/
285
286static int *fdchanges;
287static int fdchangemax, fdchangecnt;
288 400
289static void 401static void
290fd_reify (EV_P) 402fd_reify (EV_P)
291{ 403{
292 int i; 404 int i;
300 int events = 0; 412 int events = 0;
301 413
302 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)
303 events |= w->events; 415 events |= w->events;
304 416
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
305 anfd->reify = 0; 426 anfd->reify = 0;
306 427
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 428 method_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 429 anfd->events = events;
311 }
312 } 430 }
313 431
314 fdchangecnt = 0; 432 fdchangecnt = 0;
315} 433}
316 434
317static void 435static void
318fd_change (EV_P_ int fd) 436fd_change (EV_P_ int fd)
319{ 437{
320 if (anfds [fd].reify || fdchangecnt < 0) 438 if (anfds [fd].reify)
321 return; 439 return;
322 440
323 anfds [fd].reify = 1; 441 anfds [fd].reify = 1;
324 442
325 ++fdchangecnt; 443 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 444 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327 fdchanges [fdchangecnt - 1] = fd; 445 fdchanges [fdchangecnt - 1] = fd;
328} 446}
329 447
330static void 448static void
331fd_kill (EV_P_ int fd) 449fd_kill (EV_P_ int fd)
333 struct ev_io *w; 451 struct ev_io *w;
334 452
335 while ((w = (struct ev_io *)anfds [fd].head)) 453 while ((w = (struct ev_io *)anfds [fd].head))
336 { 454 {
337 ev_io_stop (EV_A_ w); 455 ev_io_stop (EV_A_ w);
338 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);
339 } 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
340} 468}
341 469
342/* called on EBADF to verify fds */ 470/* called on EBADF to verify fds */
343static void 471static void
344fd_ebadf (EV_P) 472fd_ebadf (EV_P)
345{ 473{
346 int fd; 474 int fd;
347 475
348 for (fd = 0; fd < anfdmax; ++fd) 476 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 477 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 478 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 479 fd_kill (EV_A_ fd);
352} 480}
353 481
354/* 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 */
355static void 483static void
356fd_enomem (EV_P) 484fd_enomem (EV_P)
357{ 485{
358 int fd = anfdmax; 486 int fd;
359 487
360 while (fd--) 488 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 489 if (anfds [fd].events)
362 { 490 {
363 close (fd);
364 fd_kill (EV_A_ fd); 491 fd_kill (EV_A_ fd);
365 return; 492 return;
366 } 493 }
367} 494}
368 495
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
369/*****************************************************************************/ 511/*****************************************************************************/
370 512
371static struct ev_timer **timers;
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void 513static void
378upheap (WT *timers, int k) 514upheap (WT *heap, int k)
379{ 515{
380 WT w = timers [k]; 516 WT w = heap [k];
381 517
382 while (k && timers [k >> 1]->at > w->at) 518 while (k && heap [k >> 1]->at > w->at)
383 { 519 {
384 timers [k] = timers [k >> 1]; 520 heap [k] = heap [k >> 1];
385 timers [k]->active = k + 1; 521 ((W)heap [k])->active = k + 1;
386 k >>= 1; 522 k >>= 1;
387 } 523 }
388 524
389 timers [k] = w; 525 heap [k] = w;
390 timers [k]->active = k + 1; 526 ((W)heap [k])->active = k + 1;
391 527
392} 528}
393 529
394static void 530static void
395downheap (WT *timers, int N, int k) 531downheap (WT *heap, int N, int k)
396{ 532{
397 WT w = timers [k]; 533 WT w = heap [k];
398 534
399 while (k < (N >> 1)) 535 while (k < (N >> 1))
400 { 536 {
401 int j = k << 1; 537 int j = k << 1;
402 538
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 539 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404 ++j; 540 ++j;
405 541
406 if (w->at <= timers [j]->at) 542 if (w->at <= heap [j]->at)
407 break; 543 break;
408 544
409 timers [k] = timers [j]; 545 heap [k] = heap [j];
410 timers [k]->active = k + 1; 546 ((W)heap [k])->active = k + 1;
411 k = j; 547 k = j;
412 } 548 }
413 549
414 timers [k] = w; 550 heap [k] = w;
415 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);
416} 559}
417 560
418/*****************************************************************************/ 561/*****************************************************************************/
419 562
420typedef struct 563typedef struct
421{ 564{
422 struct ev_watcher_list *head; 565 WL head;
423 sig_atomic_t volatile gotsig; 566 sig_atomic_t volatile gotsig;
424} ANSIG; 567} ANSIG;
425 568
426static ANSIG *signals; 569static ANSIG *signals;
427static int signalmax; 570static int signalmax;
443} 586}
444 587
445static void 588static void
446sighandler (int signum) 589sighandler (int signum)
447{ 590{
591#if _WIN32
592 signal (signum, sighandler);
593#endif
594
448 signals [signum - 1].gotsig = 1; 595 signals [signum - 1].gotsig = 1;
449 596
450 if (!gotsig) 597 if (!gotsig)
451 { 598 {
452 int old_errno = errno; 599 int old_errno = errno;
454 write (sigpipe [1], &signum, 1); 601 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 602 errno = old_errno;
456 } 603 }
457} 604}
458 605
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
459static void 626static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 627sigcb (EV_P_ struct ev_io *iow, int revents)
461{ 628{
462 struct ev_watcher_list *w;
463 int signum; 629 int signum;
464 630
465 read (sigpipe [0], &revents, 1); 631 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 632 gotsig = 0;
467 633
468 for (signum = signalmax; signum--; ) 634 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 635 if (signals [signum].gotsig)
470 { 636 ev_feed_signal_event (EV_A_ signum + 1);
471 signals [signum].gotsig = 0; 637}
472 638
473 for (w = signals [signum].head; w; w = w->next) 639inline void
474 event (EV_A_ (W)w, EV_SIGNAL); 640fd_intern (int fd)
475 } 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
476} 649}
477 650
478static void 651static void
479siginit (EV_P) 652siginit (EV_P)
480{ 653{
481#ifndef WIN32 654 fd_intern (sigpipe [0]);
482 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 655 fd_intern (sigpipe [1]);
483 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485 /* rather than sort out wether we really need nb, set it */
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif
489 656
490 ev_io_set (&sigev, sigpipe [0], EV_READ); 657 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev); 658 ev_io_start (EV_A_ &sigev);
492 ev_unref (EV_A); /* child watcher should not keep loop alive */ 659 ev_unref (EV_A); /* child watcher should not keep loop alive */
493} 660}
494 661
495/*****************************************************************************/ 662/*****************************************************************************/
496 663
497static struct ev_idle **idles;
498static int idlemax, idlecnt;
499
500static struct ev_prepare **prepares;
501static int preparemax, preparecnt;
502
503static struct ev_check **checks;
504static int checkmax, checkcnt;
505
506/*****************************************************************************/
507
508static struct ev_child *childs [PID_HASHSIZE]; 664static struct ev_child *childs [PID_HASHSIZE];
665
666#ifndef _WIN32
667
509static struct ev_signal childev; 668static struct ev_signal childev;
510
511#ifndef WIN32
512 669
513#ifndef WCONTINUED 670#ifndef WCONTINUED
514# define WCONTINUED 0 671# define WCONTINUED 0
515#endif 672#endif
516 673
520 struct ev_child *w; 677 struct ev_child *w;
521 678
522 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)
523 if (w->pid == pid || !w->pid) 680 if (w->pid == pid || !w->pid)
524 { 681 {
525 w->priority = sw->priority; /* need to do it *now* */ 682 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
526 w->rpid = pid; 683 w->rpid = pid;
527 w->rstatus = status; 684 w->rstatus = status;
528 event (EV_A_ (W)w, EV_CHILD); 685 ev_feed_event (EV_A_ (W)w, EV_CHILD);
529 } 686 }
530} 687}
531 688
532static void 689static void
533childcb (EV_P_ struct ev_signal *sw, int revents) 690childcb (EV_P_ struct ev_signal *sw, int revents)
535 int pid, status; 692 int pid, status;
536 693
537 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 694 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538 { 695 {
539 /* 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 */
540 event (EV_A_ (W)sw, EV_SIGNAL); 697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541 698
542 child_reap (EV_A_ sw, pid, pid, status); 699 child_reap (EV_A_ sw, pid, pid, status);
543 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 */
544 } 701 }
545} 702}
552# include "ev_kqueue.c" 709# include "ev_kqueue.c"
553#endif 710#endif
554#if EV_USE_EPOLL 711#if EV_USE_EPOLL
555# include "ev_epoll.c" 712# include "ev_epoll.c"
556#endif 713#endif
557#if EV_USEV_POLL 714#if EV_USE_POLL
558# include "ev_poll.c" 715# include "ev_poll.c"
559#endif 716#endif
560#if EV_USE_SELECT 717#if EV_USE_SELECT
561# include "ev_select.c" 718# include "ev_select.c"
562#endif 719#endif
575 732
576/* 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 */
577static int 734static int
578enable_secure (void) 735enable_secure (void)
579{ 736{
580#ifdef WIN32 737#ifdef _WIN32
581 return 0; 738 return 0;
582#else 739#else
583 return getuid () != geteuid () 740 return getuid () != geteuid ()
584 || getgid () != getegid (); 741 || getgid () != getegid ();
585#endif 742#endif
589ev_method (EV_P) 746ev_method (EV_P)
590{ 747{
591 return method; 748 return method;
592} 749}
593 750
594int 751static void
595ev_init (EV_P_ int methods) 752loop_init (EV_P_ int methods)
596{ 753{
597 if (!method) 754 if (!method)
598 { 755 {
599#if EV_USE_MONOTONIC 756#if EV_USE_MONOTONIC
600 { 757 {
602 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 759 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603 have_monotonic = 1; 760 have_monotonic = 1;
604 } 761 }
605#endif 762#endif
606 763
607 rt_now = ev_time (); 764 ev_rt_now = ev_time ();
608 mn_now = get_clock (); 765 mn_now = get_clock ();
609 now_floor = mn_now; 766 now_floor = mn_now;
610 diff = rt_now - mn_now; 767 rtmn_diff = ev_rt_now - mn_now;
611
612 if (pipe (sigpipe))
613 return 0;
614 768
615 if (methods == EVMETHOD_AUTO) 769 if (methods == EVMETHOD_AUTO)
616 if (!enable_secure () && getenv ("LIBmethodS")) 770 if (!enable_secure () && getenv ("LIBEV_METHODS"))
617 methods = atoi (getenv ("LIBmethodS")); 771 methods = atoi (getenv ("LIBEV_METHODS"));
618 else 772 else
619 methods = EVMETHOD_ANY; 773 methods = EVMETHOD_ANY;
620 774
621 method = 0; 775 method = 0;
622#if EV_USE_KQUEUE 776#if EV_USE_KQUEUE
623 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 777 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624#endif 778#endif
625#if EV_USE_EPOLL 779#if EV_USE_EPOLL
626 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 780 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627#endif 781#endif
628#if EV_USEV_POLL 782#if EV_USE_POLL
629 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 783 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630#endif 784#endif
631#if EV_USE_SELECT 785#if EV_USE_SELECT
632 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 786 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633#endif 787#endif
634 788
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
635 if (method) 908 if (ev_method (EV_A))
636 { 909 {
637 ev_watcher_init (&sigev, sigcb);
638 ev_set_priority (&sigev, EV_MAXPRI);
639 siginit (EV_A); 910 siginit (EV_A);
640 911
641#ifndef WIN32 912#ifndef _WIN32
642 ev_signal_init (&childev, childcb, SIGCHLD); 913 ev_signal_init (&childev, childcb, SIGCHLD);
643 ev_set_priority (&childev, EV_MAXPRI); 914 ev_set_priority (&childev, EV_MAXPRI);
644 ev_signal_start (EV_A_ &childev); 915 ev_signal_start (EV_A_ &childev);
645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 916 ev_unref (EV_A); /* child watcher should not keep loop alive */
646#endif 917#endif
647 } 918 }
919 else
920 default_loop = 0;
648 } 921 }
649 922
650 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;
651} 956}
652 957
653/*****************************************************************************/ 958/*****************************************************************************/
654 959
655void 960static int
656ev_fork_prepare (void) 961any_pending (EV_P)
657{ 962{
658 /* nop */ 963 int pri;
659}
660 964
661void 965 for (pri = NUMPRI; pri--; )
662ev_fork_parent (void) 966 if (pendingcnt [pri])
663{ 967 return 1;
664 /* nop */
665}
666 968
667void 969 return 0;
668ev_fork_child (void)
669{
670#if EV_USE_EPOLL
671 if (method == EVMETHOD_EPOLL)
672 epoll_postfork_child ();
673#endif
674
675 ev_io_stop (&sigev);
676 close (sigpipe [0]);
677 close (sigpipe [1]);
678 pipe (sigpipe);
679 siginit ();
680} 970}
681
682/*****************************************************************************/
683 971
684static void 972static void
685call_pending (EV_P) 973call_pending (EV_P)
686{ 974{
687 int pri; 975 int pri;
692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 980 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693 981
694 if (p->w) 982 if (p->w)
695 { 983 {
696 p->w->pending = 0; 984 p->w->pending = 0;
697 p->w->cb (EV_A_ p->w, p->events); 985 EV_CB_INVOKE (p->w, p->events);
698 } 986 }
699 } 987 }
700} 988}
701 989
702static void 990static void
703timers_reify (EV_P) 991timers_reify (EV_P)
704{ 992{
705 while (timercnt && timers [0]->at <= mn_now) 993 while (timercnt && ((WT)timers [0])->at <= mn_now)
706 { 994 {
707 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)));
708 998
709 /* first reschedule or stop timer */ 999 /* first reschedule or stop timer */
710 if (w->repeat) 1000 if (w->repeat)
711 { 1001 {
712 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
713 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
714 downheap ((WT *)timers, timercnt, 0); 1008 downheap ((WT *)timers, timercnt, 0);
715 } 1009 }
716 else 1010 else
717 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1011 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718 1012
719 event ((W)w, EV_TIMEOUT); 1013 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720 } 1014 }
721} 1015}
722 1016
1017#if EV_PERIODICS
723static void 1018static void
724periodics_reify (EV_P) 1019periodics_reify (EV_P)
725{ 1020{
726 while (periodiccnt && periodics [0]->at <= rt_now) 1021 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727 { 1022 {
728 struct ev_periodic *w = periodics [0]; 1023 struct ev_periodic *w = periodics [0];
729 1024
1025 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1026
730 /* first reschedule or stop timer */ 1027 /* first reschedule or stop timer */
731 if (w->interval) 1028 if (w->reschedule_cb)
732 { 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 {
733 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;
734 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));
735 downheap ((WT *)periodics, periodiccnt, 0); 1039 downheap ((WT *)periodics, periodiccnt, 0);
736 } 1040 }
737 else 1041 else
738 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1042 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739 1043
740 event (EV_A_ (W)w, EV_PERIODIC); 1044 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741 } 1045 }
742} 1046}
743 1047
744static void 1048static void
745periodics_reschedule (EV_P_ ev_tstamp diff) 1049periodics_reschedule (EV_P)
746{ 1050{
747 int i; 1051 int i;
748 1052
749 /* adjust periodics after time jump */ 1053 /* adjust periodics after time jump */
750 for (i = 0; i < periodiccnt; ++i) 1054 for (i = 0; i < periodiccnt; ++i)
751 { 1055 {
752 struct ev_periodic *w = periodics [i]; 1056 struct ev_periodic *w = periodics [i];
753 1057
1058 if (w->reschedule_cb)
1059 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754 if (w->interval) 1060 else if (w->interval)
755 {
756 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;
757
758 if (fabs (diff) >= 1e-4)
759 {
760 ev_periodic_stop (EV_A_ w);
761 ev_periodic_start (EV_A_ w);
762
763 i = 0; /* restart loop, inefficient, but time jumps should be rare */
764 }
765 }
766 } 1062 }
1063
1064 /* now rebuild the heap */
1065 for (i = periodiccnt >> 1; i--; )
1066 downheap ((WT *)periodics, periodiccnt, i);
767} 1067}
1068#endif
768 1069
769inline int 1070inline int
770time_update_monotonic (EV_P) 1071time_update_monotonic (EV_P)
771{ 1072{
772 mn_now = get_clock (); 1073 mn_now = get_clock ();
773 1074
774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1075 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775 { 1076 {
776 rt_now = mn_now + diff; 1077 ev_rt_now = rtmn_diff + mn_now;
777 return 0; 1078 return 0;
778 } 1079 }
779 else 1080 else
780 { 1081 {
781 now_floor = mn_now; 1082 now_floor = mn_now;
782 rt_now = ev_time (); 1083 ev_rt_now = ev_time ();
783 return 1; 1084 return 1;
784 } 1085 }
785} 1086}
786 1087
787static void 1088static void
792#if EV_USE_MONOTONIC 1093#if EV_USE_MONOTONIC
793 if (expect_true (have_monotonic)) 1094 if (expect_true (have_monotonic))
794 { 1095 {
795 if (time_update_monotonic (EV_A)) 1096 if (time_update_monotonic (EV_A))
796 { 1097 {
797 ev_tstamp odiff = diff; 1098 ev_tstamp odiff = rtmn_diff;
798 1099
799 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 */
800 { 1101 {
801 diff = rt_now - mn_now; 1102 rtmn_diff = ev_rt_now - mn_now;
802 1103
803 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1104 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804 return; /* all is well */ 1105 return; /* all is well */
805 1106
806 rt_now = ev_time (); 1107 ev_rt_now = ev_time ();
807 mn_now = get_clock (); 1108 mn_now = get_clock ();
808 now_floor = mn_now; 1109 now_floor = mn_now;
809 } 1110 }
810 1111
1112# if EV_PERIODICS
811 periodics_reschedule (EV_A_ diff - odiff); 1113 periodics_reschedule (EV_A);
1114# endif
812 /* 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) */
813 } 1117 }
814 } 1118 }
815 else 1119 else
816#endif 1120#endif
817 { 1121 {
818 rt_now = ev_time (); 1122 ev_rt_now = ev_time ();
819 1123
820 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))
821 { 1125 {
1126#if EV_PERIODICS
822 periodics_reschedule (EV_A_ rt_now - mn_now); 1127 periodics_reschedule (EV_A);
1128#endif
823 1129
824 /* 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 */
825 for (i = 0; i < timercnt; ++i) 1131 for (i = 0; i < timercnt; ++i)
826 timers [i]->at += diff; 1132 ((WT)timers [i])->at += ev_rt_now - mn_now;
827 } 1133 }
828 1134
829 mn_now = rt_now; 1135 mn_now = ev_rt_now;
830 } 1136 }
831} 1137}
832 1138
833void 1139void
834ev_ref (EV_P) 1140ev_ref (EV_P)
857 { 1163 {
858 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1164 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859 call_pending (EV_A); 1165 call_pending (EV_A);
860 } 1166 }
861 1167
1168 /* we might have forked, so reify kernel state if necessary */
1169 if (expect_false (postfork))
1170 loop_fork (EV_A);
1171
862 /* update fd-related kernel structures */ 1172 /* update fd-related kernel structures */
863 fd_reify (EV_A); 1173 fd_reify (EV_A);
864 1174
865 /* calculate blocking time */ 1175 /* calculate blocking time */
866 1176
867 /* 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
868 always have timers, we just calculate it always */ 1178 always have timers, we just calculate it always */
869#if EV_USE_MONOTONIC 1179#if EV_USE_MONOTONIC
870 if (expect_true (have_monotonic)) 1180 if (expect_true (have_monotonic))
871 time_update_monotonic (EV_A); 1181 time_update_monotonic (EV_A);
872 else 1182 else
873#endif 1183#endif
874 { 1184 {
875 rt_now = ev_time (); 1185 ev_rt_now = ev_time ();
876 mn_now = rt_now; 1186 mn_now = ev_rt_now;
877 } 1187 }
878 1188
879 if (flags & EVLOOP_NONBLOCK || idlecnt) 1189 if (flags & EVLOOP_NONBLOCK || idlecnt)
880 block = 0.; 1190 block = 0.;
881 else 1191 else
882 { 1192 {
883 block = MAX_BLOCKTIME; 1193 block = MAX_BLOCKTIME;
884 1194
885 if (timercnt) 1195 if (timercnt)
886 { 1196 {
887 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1197 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888 if (block > to) block = to; 1198 if (block > to) block = to;
889 } 1199 }
890 1200
1201#if EV_PERIODICS
891 if (periodiccnt) 1202 if (periodiccnt)
892 { 1203 {
893 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1204 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
894 if (block > to) block = to; 1205 if (block > to) block = to;
895 } 1206 }
1207#endif
896 1208
897 if (block < 0.) block = 0.; 1209 if (block < 0.) block = 0.;
898 } 1210 }
899 1211
900 method_poll (EV_A_ block); 1212 method_poll (EV_A_ block);
901 1213
902 /* update rt_now, do magic */ 1214 /* update ev_rt_now, do magic */
903 time_update (EV_A); 1215 time_update (EV_A);
904 1216
905 /* queue pending timers and reschedule them */ 1217 /* queue pending timers and reschedule them */
906 timers_reify (EV_A); /* relative timers called last */ 1218 timers_reify (EV_A); /* relative timers called last */
1219#if EV_PERIODICS
907 periodics_reify (EV_A); /* absolute timers called first */ 1220 periodics_reify (EV_A); /* absolute timers called first */
1221#endif
908 1222
909 /* queue idle watchers unless io or timers are pending */ 1223 /* queue idle watchers unless io or timers are pending */
910 if (!pendingcnt) 1224 if (idlecnt && !any_pending (EV_A))
911 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1225 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912 1226
913 /* queue check watchers, to be executed first */ 1227 /* queue check watchers, to be executed first */
914 if (checkcnt) 1228 if (checkcnt)
915 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1229 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
990 return; 1304 return;
991 1305
992 assert (("ev_io_start called with negative fd", fd >= 0)); 1306 assert (("ev_io_start called with negative fd", fd >= 0));
993 1307
994 ev_start (EV_A_ (W)w, 1); 1308 ev_start (EV_A_ (W)w, 1);
995 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1309 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1310 wlist_add ((WL *)&anfds[fd].head, (WL)w);
997 1311
998 fd_change (EV_A_ fd); 1312 fd_change (EV_A_ fd);
999} 1313}
1000 1314
1003{ 1317{
1004 ev_clear_pending (EV_A_ (W)w); 1318 ev_clear_pending (EV_A_ (W)w);
1005 if (!ev_is_active (w)) 1319 if (!ev_is_active (w))
1006 return; 1320 return;
1007 1321
1322 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1323
1008 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1324 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009 ev_stop (EV_A_ (W)w); 1325 ev_stop (EV_A_ (W)w);
1010 1326
1011 fd_change (EV_A_ w->fd); 1327 fd_change (EV_A_ w->fd);
1012} 1328}
1015ev_timer_start (EV_P_ struct ev_timer *w) 1331ev_timer_start (EV_P_ struct ev_timer *w)
1016{ 1332{
1017 if (ev_is_active (w)) 1333 if (ev_is_active (w))
1018 return; 1334 return;
1019 1335
1020 w->at += mn_now; 1336 ((WT)w)->at += mn_now;
1021 1337
1022 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.));
1023 1339
1024 ev_start (EV_A_ (W)w, ++timercnt); 1340 ev_start (EV_A_ (W)w, ++timercnt);
1025 array_needsize (timers, timermax, timercnt, ); 1341 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026 timers [timercnt - 1] = w; 1342 timers [timercnt - 1] = w;
1027 upheap ((WT *)timers, timercnt - 1); 1343 upheap ((WT *)timers, timercnt - 1);
1344
1345 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028} 1346}
1029 1347
1030void 1348void
1031ev_timer_stop (EV_P_ struct ev_timer *w) 1349ev_timer_stop (EV_P_ struct ev_timer *w)
1032{ 1350{
1033 ev_clear_pending (EV_A_ (W)w); 1351 ev_clear_pending (EV_A_ (W)w);
1034 if (!ev_is_active (w)) 1352 if (!ev_is_active (w))
1035 return; 1353 return;
1036 1354
1355 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1356
1037 if (w->active < timercnt--) 1357 if (((W)w)->active < timercnt--)
1038 { 1358 {
1039 timers [w->active - 1] = timers [timercnt]; 1359 timers [((W)w)->active - 1] = timers [timercnt];
1040 downheap ((WT *)timers, timercnt, w->active - 1); 1360 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041 } 1361 }
1042 1362
1043 w->at = w->repeat; 1363 ((WT)w)->at -= mn_now;
1044 1364
1045 ev_stop (EV_A_ (W)w); 1365 ev_stop (EV_A_ (W)w);
1046} 1366}
1047 1367
1048void 1368void
1050{ 1370{
1051 if (ev_is_active (w)) 1371 if (ev_is_active (w))
1052 { 1372 {
1053 if (w->repeat) 1373 if (w->repeat)
1054 { 1374 {
1055 w->at = mn_now + w->repeat; 1375 ((WT)w)->at = mn_now + w->repeat;
1056 downheap ((WT *)timers, timercnt, w->active - 1); 1376 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057 } 1377 }
1058 else 1378 else
1059 ev_timer_stop (EV_A_ w); 1379 ev_timer_stop (EV_A_ w);
1060 } 1380 }
1061 else if (w->repeat) 1381 else if (w->repeat)
1062 ev_timer_start (EV_A_ w); 1382 ev_timer_start (EV_A_ w);
1063} 1383}
1064 1384
1385#if EV_PERIODICS
1065void 1386void
1066ev_periodic_start (EV_P_ struct ev_periodic *w) 1387ev_periodic_start (EV_P_ struct ev_periodic *w)
1067{ 1388{
1068 if (ev_is_active (w)) 1389 if (ev_is_active (w))
1069 return; 1390 return;
1070 1391
1392 if (w->reschedule_cb)
1393 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1394 else if (w->interval)
1395 {
1071 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.));
1072
1073 /* 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 */
1074 if (w->interval)
1075 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 }
1076 1400
1077 ev_start (EV_A_ (W)w, ++periodiccnt); 1401 ev_start (EV_A_ (W)w, ++periodiccnt);
1078 array_needsize (periodics, periodicmax, periodiccnt, ); 1402 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079 periodics [periodiccnt - 1] = w; 1403 periodics [periodiccnt - 1] = w;
1080 upheap ((WT *)periodics, periodiccnt - 1); 1404 upheap ((WT *)periodics, periodiccnt - 1);
1405
1406 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081} 1407}
1082 1408
1083void 1409void
1084ev_periodic_stop (EV_P_ struct ev_periodic *w) 1410ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085{ 1411{
1086 ev_clear_pending (EV_A_ (W)w); 1412 ev_clear_pending (EV_A_ (W)w);
1087 if (!ev_is_active (w)) 1413 if (!ev_is_active (w))
1088 return; 1414 return;
1089 1415
1416 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1417
1090 if (w->active < periodiccnt--) 1418 if (((W)w)->active < periodiccnt--)
1091 { 1419 {
1092 periodics [w->active - 1] = periodics [periodiccnt]; 1420 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1421 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094 } 1422 }
1095 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];
1096 ev_stop (EV_A_ (W)w); 1499 ev_stop (EV_A_ (W)w);
1097} 1500}
1098 1501
1099#ifndef SA_RESTART 1502#ifndef SA_RESTART
1100# define SA_RESTART 0 1503# define SA_RESTART 0
1101#endif 1504#endif
1102 1505
1103void 1506void
1104ev_signal_start (EV_P_ struct ev_signal *w) 1507ev_signal_start (EV_P_ struct ev_signal *w)
1105{ 1508{
1509#if EV_MULTIPLICITY
1510 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1511#endif
1106 if (ev_is_active (w)) 1512 if (ev_is_active (w))
1107 return; 1513 return;
1108 1514
1109 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));
1110 1516
1111 ev_start (EV_A_ (W)w, 1); 1517 ev_start (EV_A_ (W)w, 1);
1112 array_needsize (signals, signalmax, w->signum, signals_init); 1518 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1519 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114 1520
1115 if (!w->next) 1521 if (!((WL)w)->next)
1116 { 1522 {
1523#if _WIN32
1524 signal (w->signum, sighandler);
1525#else
1117 struct sigaction sa; 1526 struct sigaction sa;
1118 sa.sa_handler = sighandler; 1527 sa.sa_handler = sighandler;
1119 sigfillset (&sa.sa_mask); 1528 sigfillset (&sa.sa_mask);
1120 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 */
1121 sigaction (w->signum, &sa, 0); 1530 sigaction (w->signum, &sa, 0);
1531#endif
1122 } 1532 }
1123} 1533}
1124 1534
1125void 1535void
1126ev_signal_stop (EV_P_ struct ev_signal *w) 1536ev_signal_stop (EV_P_ struct ev_signal *w)
1135 if (!signals [w->signum - 1].head) 1545 if (!signals [w->signum - 1].head)
1136 signal (w->signum, SIG_DFL); 1546 signal (w->signum, SIG_DFL);
1137} 1547}
1138 1548
1139void 1549void
1140ev_idle_start (EV_P_ struct ev_idle *w)
1141{
1142 if (ev_is_active (w))
1143 return;
1144
1145 ev_start (EV_A_ (W)w, ++idlecnt);
1146 array_needsize (idles, idlemax, idlecnt, );
1147 idles [idlecnt - 1] = w;
1148}
1149
1150void
1151ev_idle_stop (EV_P_ struct ev_idle *w)
1152{
1153 ev_clear_pending (EV_A_ (W)w);
1154 if (ev_is_active (w))
1155 return;
1156
1157 idles [w->active - 1] = idles [--idlecnt];
1158 ev_stop (EV_A_ (W)w);
1159}
1160
1161void
1162ev_prepare_start (EV_P_ struct ev_prepare *w)
1163{
1164 if (ev_is_active (w))
1165 return;
1166
1167 ev_start (EV_A_ (W)w, ++preparecnt);
1168 array_needsize (prepares, preparemax, preparecnt, );
1169 prepares [preparecnt - 1] = w;
1170}
1171
1172void
1173ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174{
1175 ev_clear_pending (EV_A_ (W)w);
1176 if (ev_is_active (w))
1177 return;
1178
1179 prepares [w->active - 1] = prepares [--preparecnt];
1180 ev_stop (EV_A_ (W)w);
1181}
1182
1183void
1184ev_check_start (EV_P_ struct ev_check *w)
1185{
1186 if (ev_is_active (w))
1187 return;
1188
1189 ev_start (EV_A_ (W)w, ++checkcnt);
1190 array_needsize (checks, checkmax, checkcnt, );
1191 checks [checkcnt - 1] = w;
1192}
1193
1194void
1195ev_check_stop (EV_P_ struct ev_check *w)
1196{
1197 ev_clear_pending (EV_A_ (W)w);
1198 if (ev_is_active (w))
1199 return;
1200
1201 checks [w->active - 1] = checks [--checkcnt];
1202 ev_stop (EV_A_ (W)w);
1203}
1204
1205void
1206ev_child_start (EV_P_ struct ev_child *w) 1550ev_child_start (EV_P_ struct ev_child *w)
1207{ 1551{
1552#if EV_MULTIPLICITY
1553 assert (("child watchers are only supported in the default loop", loop == default_loop));
1554#endif
1208 if (ev_is_active (w)) 1555 if (ev_is_active (w))
1209 return; 1556 return;
1210 1557
1211 ev_start (EV_A_ (W)w, 1); 1558 ev_start (EV_A_ (W)w, 1);
1212 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1559 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1214 1561
1215void 1562void
1216ev_child_stop (EV_P_ struct ev_child *w) 1563ev_child_stop (EV_P_ struct ev_child *w)
1217{ 1564{
1218 ev_clear_pending (EV_A_ (W)w); 1565 ev_clear_pending (EV_A_ (W)w);
1219 if (ev_is_active (w)) 1566 if (!ev_is_active (w))
1220 return; 1567 return;
1221 1568
1222 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1569 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1223 ev_stop (EV_A_ (W)w); 1570 ev_stop (EV_A_ (W)w);
1224} 1571}
1239 void (*cb)(int revents, void *arg) = once->cb; 1586 void (*cb)(int revents, void *arg) = once->cb;
1240 void *arg = once->arg; 1587 void *arg = once->arg;
1241 1588
1242 ev_io_stop (EV_A_ &once->io); 1589 ev_io_stop (EV_A_ &once->io);
1243 ev_timer_stop (EV_A_ &once->to); 1590 ev_timer_stop (EV_A_ &once->to);
1244 free (once); 1591 ev_free (once);
1245 1592
1246 cb (revents, arg); 1593 cb (revents, arg);
1247} 1594}
1248 1595
1249static void 1596static void
1259} 1606}
1260 1607
1261void 1608void
1262ev_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)
1263{ 1610{
1264 struct ev_once *once = malloc (sizeof (struct ev_once)); 1611 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265 1612
1266 if (!once) 1613 if (!once)
1267 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268 else 1615 else
1269 { 1616 {
1270 once->cb = cb; 1617 once->cb = cb;
1271 once->arg = arg; 1618 once->arg = arg;
1272 1619
1273 ev_watcher_init (&once->io, once_cb_io); 1620 ev_init (&once->io, once_cb_io);
1274 if (fd >= 0) 1621 if (fd >= 0)
1275 { 1622 {
1276 ev_io_set (&once->io, fd, events); 1623 ev_io_set (&once->io, fd, events);
1277 ev_io_start (EV_A_ &once->io); 1624 ev_io_start (EV_A_ &once->io);
1278 } 1625 }
1279 1626
1280 ev_watcher_init (&once->to, once_cb_to); 1627 ev_init (&once->to, once_cb_to);
1281 if (timeout >= 0.) 1628 if (timeout >= 0.)
1282 { 1629 {
1283 ev_timer_set (&once->to, timeout, 0.); 1630 ev_timer_set (&once->to, timeout, 0.);
1284 ev_timer_start (EV_A_ &once->to); 1631 ev_timer_start (EV_A_ &once->to);
1285 } 1632 }
1286 } 1633 }
1287} 1634}
1288 1635
1289/*****************************************************************************/ 1636#ifdef __cplusplus
1290
1291#if 0
1292
1293struct ev_io wio;
1294
1295static void
1296sin_cb (struct ev_io *w, int revents)
1297{
1298 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299} 1637}
1300
1301static void
1302ocb (struct ev_timer *w, int revents)
1303{
1304 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305 ev_timer_stop (w);
1306 ev_timer_start (w);
1307}
1308
1309static void
1310scb (struct ev_signal *w, int revents)
1311{
1312 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313 ev_io_stop (&wio);
1314 ev_io_start (&wio);
1315}
1316
1317static void
1318gcb (struct ev_signal *w, int revents)
1319{
1320 fprintf (stderr, "generic %x\n", revents);
1321
1322}
1323
1324int main (void)
1325{
1326 ev_init (0);
1327
1328 ev_io_init (&wio, sin_cb, 0, EV_READ);
1329 ev_io_start (&wio);
1330
1331 struct ev_timer t[10000];
1332
1333#if 0
1334 int i;
1335 for (i = 0; i < 10000; ++i)
1336 {
1337 struct ev_timer *w = t + i;
1338 ev_watcher_init (w, ocb, i);
1339 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340 ev_timer_start (w);
1341 if (drand48 () < 0.5)
1342 ev_timer_stop (w);
1343 }
1344#endif 1638#endif
1345 1639
1346 struct ev_timer t1;
1347 ev_timer_init (&t1, ocb, 5, 10);
1348 ev_timer_start (&t1);
1349
1350 struct ev_signal sig;
1351 ev_signal_init (&sig, scb, SIGQUIT);
1352 ev_signal_start (&sig);
1353
1354 struct ev_check cw;
1355 ev_check_init (&cw, gcb);
1356 ev_check_start (&cw);
1357
1358 struct ev_idle iw;
1359 ev_idle_init (&iw, gcb);
1360 ev_idle_start (&iw);
1361
1362 ev_loop (0);
1363
1364 return 0;
1365}
1366
1367#endif
1368
1369
1370
1371

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