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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 1.193 by root, Sat Dec 22 05:47:58 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
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
42
43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
57# endif
58
59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
65# endif
66
67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
73# endif
74
75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
81# endif
82
83# ifndef EV_USE_EPOLL
84# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
85# define EV_USE_EPOLL 1
86# else
87# define EV_USE_EPOLL 0
88# endif
89# endif
90
91# ifndef EV_USE_KQUEUE
92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
93# define EV_USE_KQUEUE 1
94# else
95# define EV_USE_KQUEUE 0
96# endif
97# endif
98
99# ifndef EV_USE_PORT
100# if HAVE_PORT_H && HAVE_PORT_CREATE
101# define EV_USE_PORT 1
102# else
103# define EV_USE_PORT 0
104# endif
105# endif
106
107# ifndef EV_USE_INOTIFY
108# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
109# define EV_USE_INOTIFY 1
110# else
111# define EV_USE_INOTIFY 0
112# endif
113# endif
114
33#endif 115#endif
34 116
35#include <math.h> 117#include <math.h>
36#include <stdlib.h> 118#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 119#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 120#include <stddef.h>
41 121
42#include <stdio.h> 122#include <stdio.h>
43 123
44#include <assert.h> 124#include <assert.h>
45#include <errno.h> 125#include <errno.h>
46#include <sys/types.h> 126#include <sys/types.h>
127#include <time.h>
128
129#include <signal.h>
130
131#ifdef EV_H
132# include EV_H
133#else
134# include "ev.h"
135#endif
136
47#ifndef WIN32 137#ifndef _WIN32
138# include <sys/time.h>
48# include <sys/wait.h> 139# include <sys/wait.h>
140# include <unistd.h>
141#else
142# define WIN32_LEAN_AND_MEAN
143# include <windows.h>
144# ifndef EV_SELECT_IS_WINSOCKET
145# define EV_SELECT_IS_WINSOCKET 1
49#endif 146# endif
50#include <sys/time.h> 147#endif
51#include <time.h>
52 148
53/**/ 149/**/
54 150
55#ifndef EV_USE_MONOTONIC 151#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 152# define EV_USE_MONOTONIC 0
153#endif
154
155#ifndef EV_USE_REALTIME
156# define EV_USE_REALTIME 0
157#endif
158
159#ifndef EV_USE_NANOSLEEP
160# define EV_USE_NANOSLEEP 0
57#endif 161#endif
58 162
59#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
61#endif 165#endif
62 166
63#ifndef EV_USEV_POLL 167#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 168# ifdef _WIN32
169# define EV_USE_POLL 0
170# else
171# define EV_USE_POLL 1
172# endif
65#endif 173#endif
66 174
67#ifndef EV_USE_EPOLL 175#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 176# define EV_USE_EPOLL 0
69#endif 177#endif
70 178
71#ifndef EV_USE_KQUEUE 179#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 180# define EV_USE_KQUEUE 0
73#endif 181#endif
74 182
75#ifndef EV_USE_REALTIME 183#ifndef EV_USE_PORT
76# define EV_USE_REALTIME 1 184# define EV_USE_PORT 0
185#endif
186
187#ifndef EV_USE_INOTIFY
188# define EV_USE_INOTIFY 0
189#endif
190
191#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL
193# define EV_PID_HASHSIZE 1
194# else
195# define EV_PID_HASHSIZE 16
196# endif
197#endif
198
199#ifndef EV_INOTIFY_HASHSIZE
200# if EV_MINIMAL
201# define EV_INOTIFY_HASHSIZE 1
202# else
203# define EV_INOTIFY_HASHSIZE 16
204# endif
77#endif 205#endif
78 206
79/**/ 207/**/
80 208
81#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
… …
86#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
89#endif 217#endif
90 218
219#if !EV_STAT_ENABLE
220# undef EV_USE_INOTIFY
221# define EV_USE_INOTIFY 0
222#endif
223
224#if !EV_USE_NANOSLEEP
225# ifndef _WIN32
226# include <sys/select.h>
227# endif
228#endif
229
230#if EV_USE_INOTIFY
231# include <sys/inotify.h>
232#endif
233
234#if EV_SELECT_IS_WINSOCKET
235# include <winsock.h>
236#endif
237
91/**/ 238/**/
92 239
240/*
241 * This is used to avoid floating point rounding problems.
242 * It is added to ev_rt_now when scheduling periodics
243 * to ensure progress, time-wise, even when rounding
244 * errors are against us.
245 * This value is good at least till the year 4000.
246 * Better solutions welcome.
247 */
248#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
249
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 250#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) */ 251#define MAX_BLOCKTIME 59.743 /* 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 */
96/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97 253
98#include "ev.h"
99
100#if __GNUC__ >= 3 254#if __GNUC__ >= 4
101# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 256# define noinline __attribute__ ((noinline))
103#else 257#else
104# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
105# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
106#endif 263#endif
107 264
108#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
109#define expect_true(expr) expect ((expr) != 0, 1) 266#define expect_true(expr) expect ((expr) != 0, 1)
267#define inline_size static inline
268
269#if EV_MINIMAL
270# define inline_speed static noinline
271#else
272# define inline_speed static inline
273#endif
110 274
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113 277
278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
280
114typedef struct ev_watcher *W; 281typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
117 284
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 285static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 286
122static int have_monotonic; /* runtime */ 287#ifdef _WIN32
123 288# 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 289#endif
156 290
157/*****************************************************************************/ 291/*****************************************************************************/
158 292
159inline ev_tstamp 293static void (*syserr_cb)(const char *msg);
294
295void
296ev_set_syserr_cb (void (*cb)(const char *msg))
297{
298 syserr_cb = cb;
299}
300
301static void noinline
302syserr (const char *msg)
303{
304 if (!msg)
305 msg = "(libev) system error";
306
307 if (syserr_cb)
308 syserr_cb (msg);
309 else
310 {
311 perror (msg);
312 abort ();
313 }
314}
315
316static void *(*alloc)(void *ptr, long size);
317
318void
319ev_set_allocator (void *(*cb)(void *ptr, long size))
320{
321 alloc = cb;
322}
323
324inline_speed void *
325ev_realloc (void *ptr, long size)
326{
327 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
328
329 if (!ptr && size)
330 {
331 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
332 abort ();
333 }
334
335 return ptr;
336}
337
338#define ev_malloc(size) ev_realloc (0, (size))
339#define ev_free(ptr) ev_realloc ((ptr), 0)
340
341/*****************************************************************************/
342
343typedef struct
344{
345 WL head;
346 unsigned char events;
347 unsigned char reify;
348#if EV_SELECT_IS_WINSOCKET
349 SOCKET handle;
350#endif
351} ANFD;
352
353typedef struct
354{
355 W w;
356 int events;
357} ANPENDING;
358
359#if EV_USE_INOTIFY
360typedef struct
361{
362 WL head;
363} ANFS;
364#endif
365
366#if EV_MULTIPLICITY
367
368 struct ev_loop
369 {
370 ev_tstamp ev_rt_now;
371 #define ev_rt_now ((loop)->ev_rt_now)
372 #define VAR(name,decl) decl;
373 #include "ev_vars.h"
374 #undef VAR
375 };
376 #include "ev_wrap.h"
377
378 static struct ev_loop default_loop_struct;
379 struct ev_loop *ev_default_loop_ptr;
380
381#else
382
383 ev_tstamp ev_rt_now;
384 #define VAR(name,decl) static decl;
385 #include "ev_vars.h"
386 #undef VAR
387
388 static int ev_default_loop_ptr;
389
390#endif
391
392/*****************************************************************************/
393
394ev_tstamp
160ev_time (void) 395ev_time (void)
161{ 396{
162#if EV_USE_REALTIME 397#if EV_USE_REALTIME
163 struct timespec ts; 398 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 399 clock_gettime (CLOCK_REALTIME, &ts);
… …
168 gettimeofday (&tv, 0); 403 gettimeofday (&tv, 0);
169 return tv.tv_sec + tv.tv_usec * 1e-6; 404 return tv.tv_sec + tv.tv_usec * 1e-6;
170#endif 405#endif
171} 406}
172 407
173inline ev_tstamp 408ev_tstamp inline_size
174get_clock (void) 409get_clock (void)
175{ 410{
176#if EV_USE_MONOTONIC 411#if EV_USE_MONOTONIC
177 if (expect_true (have_monotonic)) 412 if (expect_true (have_monotonic))
178 { 413 {
… …
183#endif 418#endif
184 419
185 return ev_time (); 420 return ev_time ();
186} 421}
187 422
423#if EV_MULTIPLICITY
188ev_tstamp 424ev_tstamp
189ev_now (EV_P) 425ev_now (EV_P)
190{ 426{
191 return rt_now; 427 return ev_rt_now;
192} 428}
429#endif
193 430
194#define array_roundsize(base,n) ((n) | 4 & ~3) 431void
195 432ev_sleep (ev_tstamp delay)
196#define array_needsize(base,cur,cnt,init) \ 433{
197 if (expect_false ((cnt) > cur)) \ 434 if (delay > 0.)
198 { \
199 int newcnt = cur; \
200 do \
201 { \
202 newcnt = array_roundsize (base, newcnt << 1); \
203 } \
204 while ((cnt) > newcnt); \
205 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \
207 init (base + cur, newcnt - cur); \
208 cur = newcnt; \
209 } 435 {
436#if EV_USE_NANOSLEEP
437 struct timespec ts;
438
439 ts.tv_sec = (time_t)delay;
440 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
441
442 nanosleep (&ts, 0);
443#elif defined(_WIN32)
444 Sleep (delay * 1e3);
445#else
446 struct timeval tv;
447
448 tv.tv_sec = (time_t)delay;
449 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
450
451 select (0, 0, 0, 0, &tv);
452#endif
453 }
454}
210 455
211/*****************************************************************************/ 456/*****************************************************************************/
212 457
213typedef struct 458int inline_size
459array_nextsize (int elem, int cur, int cnt)
214{ 460{
215 struct ev_watcher_list *head; 461 int ncur = cur + 1;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219 462
220static ANFD *anfds; 463 do
221static int anfdmax; 464 ncur <<= 1;
465 while (cnt > ncur);
222 466
223static void 467 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
468 if (elem * ncur > 4096)
469 {
470 ncur *= elem;
471 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
472 ncur = ncur - sizeof (void *) * 4;
473 ncur /= elem;
474 }
475
476 return ncur;
477}
478
479static noinline void *
480array_realloc (int elem, void *base, int *cur, int cnt)
481{
482 *cur = array_nextsize (elem, *cur, cnt);
483 return ev_realloc (base, elem * *cur);
484}
485
486#define array_needsize(type,base,cur,cnt,init) \
487 if (expect_false ((cnt) > (cur))) \
488 { \
489 int ocur_ = (cur); \
490 (base) = (type *)array_realloc \
491 (sizeof (type), (base), &(cur), (cnt)); \
492 init ((base) + (ocur_), (cur) - ocur_); \
493 }
494
495#if 0
496#define array_slim(type,stem) \
497 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
498 { \
499 stem ## max = array_roundsize (stem ## cnt >> 1); \
500 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
501 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
502 }
503#endif
504
505#define array_free(stem, idx) \
506 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
507
508/*****************************************************************************/
509
510void noinline
511ev_feed_event (EV_P_ void *w, int revents)
512{
513 W w_ = (W)w;
514 int pri = ABSPRI (w_);
515
516 if (expect_false (w_->pending))
517 pendings [pri][w_->pending - 1].events |= revents;
518 else
519 {
520 w_->pending = ++pendingcnt [pri];
521 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
522 pendings [pri][w_->pending - 1].w = w_;
523 pendings [pri][w_->pending - 1].events = revents;
524 }
525}
526
527void inline_speed
528queue_events (EV_P_ W *events, int eventcnt, int type)
529{
530 int i;
531
532 for (i = 0; i < eventcnt; ++i)
533 ev_feed_event (EV_A_ events [i], type);
534}
535
536/*****************************************************************************/
537
538void inline_size
224anfds_init (ANFD *base, int count) 539anfds_init (ANFD *base, int count)
225{ 540{
226 while (count--) 541 while (count--)
227 { 542 {
228 base->head = 0; 543 base->head = 0;
… …
231 546
232 ++base; 547 ++base;
233 } 548 }
234} 549}
235 550
236typedef struct 551void inline_speed
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)
247{
248 if (w->pending)
249 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events;
251 return;
252 }
253
254 w->pending = ++pendingcnt [ABSPRI (w)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
256 pendings [ABSPRI (w)][w->pending - 1].w = w;
257 pendings [ABSPRI (w)][w->pending - 1].events = events;
258}
259
260static void
261queue_events (EV_P_ W *events, int eventcnt, int type)
262{
263 int i;
264
265 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type);
267}
268
269static void
270fd_event (EV_P_ int fd, int events) 552fd_event (EV_P_ int fd, int revents)
271{ 553{
272 ANFD *anfd = anfds + fd; 554 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 555 ev_io *w;
274 556
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 557 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276 { 558 {
277 int ev = w->events & events; 559 int ev = w->events & revents;
278 560
279 if (ev) 561 if (ev)
280 event (EV_A_ (W)w, ev); 562 ev_feed_event (EV_A_ (W)w, ev);
281 } 563 }
282} 564}
283 565
284/*****************************************************************************/ 566void
567ev_feed_fd_event (EV_P_ int fd, int revents)
568{
569 if (fd >= 0 && fd < anfdmax)
570 fd_event (EV_A_ fd, revents);
571}
285 572
286static int *fdchanges; 573void inline_size
287static int fdchangemax, fdchangecnt;
288
289static void
290fd_reify (EV_P) 574fd_reify (EV_P)
291{ 575{
292 int i; 576 int i;
293 577
294 for (i = 0; i < fdchangecnt; ++i) 578 for (i = 0; i < fdchangecnt; ++i)
295 { 579 {
296 int fd = fdchanges [i]; 580 int fd = fdchanges [i];
297 ANFD *anfd = anfds + fd; 581 ANFD *anfd = anfds + fd;
298 struct ev_io *w; 582 ev_io *w;
299 583
300 int events = 0; 584 unsigned char events = 0;
301 585
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 586 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303 events |= w->events; 587 events |= (unsigned char)w->events;
304 588
305 anfd->reify = 0; 589#if EV_SELECT_IS_WINSOCKET
306 590 if (events)
307 if (anfd->events != events)
308 { 591 {
309 method_modify (EV_A_ fd, anfd->events, events); 592 unsigned long argp;
310 anfd->events = events; 593 anfd->handle = _get_osfhandle (fd);
594 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
311 } 595 }
596#endif
597
598 {
599 unsigned char o_events = anfd->events;
600 unsigned char o_reify = anfd->reify;
601
602 anfd->reify = 0;
603 anfd->events = events;
604
605 if (o_events != events || o_reify & EV_IOFDSET)
606 backend_modify (EV_A_ fd, o_events, events);
607 }
312 } 608 }
313 609
314 fdchangecnt = 0; 610 fdchangecnt = 0;
315} 611}
316 612
317static void 613void inline_size
318fd_change (EV_P_ int fd) 614fd_change (EV_P_ int fd, int flags)
319{ 615{
320 if (anfds [fd].reify || fdchangecnt < 0) 616 unsigned char reify = anfds [fd].reify;
321 return;
322
323 anfds [fd].reify = 1; 617 anfds [fd].reify |= flags;
324 618
619 if (expect_true (!reify))
620 {
325 ++fdchangecnt; 621 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327 fdchanges [fdchangecnt - 1] = fd; 623 fdchanges [fdchangecnt - 1] = fd;
624 }
328} 625}
329 626
330static void 627void inline_speed
331fd_kill (EV_P_ int fd) 628fd_kill (EV_P_ int fd)
332{ 629{
333 struct ev_io *w; 630 ev_io *w;
334 631
335 while ((w = (struct ev_io *)anfds [fd].head)) 632 while ((w = (ev_io *)anfds [fd].head))
336 { 633 {
337 ev_io_stop (EV_A_ w); 634 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 635 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 636 }
637}
638
639int inline_size
640fd_valid (int fd)
641{
642#ifdef _WIN32
643 return _get_osfhandle (fd) != -1;
644#else
645 return fcntl (fd, F_GETFD) != -1;
646#endif
340} 647}
341 648
342/* called on EBADF to verify fds */ 649/* called on EBADF to verify fds */
343static void 650static void noinline
344fd_ebadf (EV_P) 651fd_ebadf (EV_P)
345{ 652{
346 int fd; 653 int fd;
347 654
348 for (fd = 0; fd < anfdmax; ++fd) 655 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 656 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 657 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 658 fd_kill (EV_A_ fd);
352} 659}
353 660
354/* called on ENOMEM in select/poll to kill some fds and retry */ 661/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 662static void noinline
356fd_enomem (EV_P) 663fd_enomem (EV_P)
357{ 664{
358 int fd = anfdmax; 665 int fd;
359 666
360 while (fd--) 667 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 668 if (anfds [fd].events)
362 { 669 {
363 close (fd);
364 fd_kill (EV_A_ fd); 670 fd_kill (EV_A_ fd);
365 return; 671 return;
366 } 672 }
367} 673}
368 674
675/* usually called after fork if backend needs to re-arm all fds from scratch */
676static void noinline
677fd_rearm_all (EV_P)
678{
679 int fd;
680
681 for (fd = 0; fd < anfdmax; ++fd)
682 if (anfds [fd].events)
683 {
684 anfds [fd].events = 0;
685 fd_change (EV_A_ fd, EV_IOFDSET | 1);
686 }
687}
688
369/*****************************************************************************/ 689/*****************************************************************************/
370 690
371static struct ev_timer **timers; 691void inline_speed
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void
378upheap (WT *timers, int k) 692upheap (WT *heap, int k)
379{ 693{
380 WT w = timers [k]; 694 WT w = heap [k];
381 695
382 while (k && timers [k >> 1]->at > w->at) 696 while (k)
383 {
384 timers [k] = timers [k >> 1];
385 timers [k]->active = k + 1;
386 k >>= 1;
387 } 697 {
388
389 timers [k] = w;
390 timers [k]->active = k + 1;
391
392}
393
394static void
395downheap (WT *timers, int N, int k)
396{
397 WT w = timers [k];
398
399 while (k < (N >> 1))
400 {
401 int j = k << 1; 698 int p = (k - 1) >> 1;
402 699
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 700 if (heap [p]->at <= w->at)
404 ++j;
405
406 if (w->at <= timers [j]->at)
407 break; 701 break;
408 702
409 timers [k] = timers [j]; 703 heap [k] = heap [p];
410 timers [k]->active = k + 1; 704 ((W)heap [k])->active = k + 1;
411 k = j; 705 k = p;
706 }
707
708 heap [k] = w;
709 ((W)heap [k])->active = k + 1;
710}
711
712void inline_speed
713downheap (WT *heap, int N, int k)
714{
715 WT w = heap [k];
716
717 for (;;)
412 } 718 {
719 int c = (k << 1) + 1;
413 720
721 if (c >= N)
722 break;
723
724 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
725 ? 1 : 0;
726
727 if (w->at <= heap [c]->at)
728 break;
729
730 heap [k] = heap [c];
731 ((W)heap [k])->active = k + 1;
732
733 k = c;
734 }
735
414 timers [k] = w; 736 heap [k] = w;
415 timers [k]->active = k + 1; 737 ((W)heap [k])->active = k + 1;
738}
739
740void inline_size
741adjustheap (WT *heap, int N, int k)
742{
743 upheap (heap, k);
744 downheap (heap, N, k);
416} 745}
417 746
418/*****************************************************************************/ 747/*****************************************************************************/
419 748
420typedef struct 749typedef struct
421{ 750{
422 struct ev_watcher_list *head; 751 WL head;
423 sig_atomic_t volatile gotsig; 752 sig_atomic_t volatile gotsig;
424} ANSIG; 753} ANSIG;
425 754
426static ANSIG *signals; 755static ANSIG *signals;
427static int signalmax; 756static int signalmax;
428 757
429static int sigpipe [2]; 758static int sigpipe [2];
430static sig_atomic_t volatile gotsig; 759static sig_atomic_t volatile gotsig;
431static struct ev_io sigev; 760static ev_io sigev;
432 761
433static void 762void inline_size
434signals_init (ANSIG *base, int count) 763signals_init (ANSIG *base, int count)
435{ 764{
436 while (count--) 765 while (count--)
437 { 766 {
438 base->head = 0; 767 base->head = 0;
… …
443} 772}
444 773
445static void 774static void
446sighandler (int signum) 775sighandler (int signum)
447{ 776{
777#if _WIN32
778 signal (signum, sighandler);
779#endif
780
448 signals [signum - 1].gotsig = 1; 781 signals [signum - 1].gotsig = 1;
449 782
450 if (!gotsig) 783 if (!gotsig)
451 { 784 {
452 int old_errno = errno; 785 int old_errno = errno;
… …
454 write (sigpipe [1], &signum, 1); 787 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 788 errno = old_errno;
456 } 789 }
457} 790}
458 791
792void noinline
793ev_feed_signal_event (EV_P_ int signum)
794{
795 WL w;
796
797#if EV_MULTIPLICITY
798 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
799#endif
800
801 --signum;
802
803 if (signum < 0 || signum >= signalmax)
804 return;
805
806 signals [signum].gotsig = 0;
807
808 for (w = signals [signum].head; w; w = w->next)
809 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
810}
811
459static void 812static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 813sigcb (EV_P_ ev_io *iow, int revents)
461{ 814{
462 struct ev_watcher_list *w;
463 int signum; 815 int signum;
464 816
465 read (sigpipe [0], &revents, 1); 817 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 818 gotsig = 0;
467 819
468 for (signum = signalmax; signum--; ) 820 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 821 if (signals [signum].gotsig)
822 ev_feed_signal_event (EV_A_ signum + 1);
823}
824
825void inline_speed
826fd_intern (int fd)
827{
828#ifdef _WIN32
829 int arg = 1;
830 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
831#else
832 fcntl (fd, F_SETFD, FD_CLOEXEC);
833 fcntl (fd, F_SETFL, O_NONBLOCK);
834#endif
835}
836
837static void noinline
838siginit (EV_P)
839{
840 fd_intern (sigpipe [0]);
841 fd_intern (sigpipe [1]);
842
843 ev_io_set (&sigev, sigpipe [0], EV_READ);
844 ev_io_start (EV_A_ &sigev);
845 ev_unref (EV_A); /* child watcher should not keep loop alive */
846}
847
848/*****************************************************************************/
849
850static WL childs [EV_PID_HASHSIZE];
851
852#ifndef _WIN32
853
854static ev_signal childev;
855
856void inline_speed
857child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
858{
859 ev_child *w;
860
861 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
862 if (w->pid == pid || !w->pid)
470 { 863 {
471 signals [signum].gotsig = 0; 864 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472 865 w->rpid = pid;
473 for (w = signals [signum].head; w; w = w->next) 866 w->rstatus = status;
474 event (EV_A_ (W)w, EV_SIGNAL); 867 ev_feed_event (EV_A_ (W)w, EV_CHILD);
475 } 868 }
476} 869}
477
478static void
479siginit (EV_P)
480{
481#ifndef WIN32
482 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
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
490 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev);
492 ev_unref (EV_A); /* child watcher should not keep loop alive */
493}
494
495/*****************************************************************************/
496
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];
509static struct ev_signal childev;
510
511#ifndef WIN32
512 870
513#ifndef WCONTINUED 871#ifndef WCONTINUED
514# define WCONTINUED 0 872# define WCONTINUED 0
515#endif 873#endif
516 874
517static void 875static void
518child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
519{
520 struct ev_child *w;
521
522 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)
524 {
525 w->priority = sw->priority; /* need to do it *now* */
526 w->rpid = pid;
527 w->rstatus = status;
528 event (EV_A_ (W)w, EV_CHILD);
529 }
530}
531
532static void
533childcb (EV_P_ struct ev_signal *sw, int revents) 876childcb (EV_P_ ev_signal *sw, int revents)
534{ 877{
535 int pid, status; 878 int pid, status;
536 879
880 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
537 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 881 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538 { 882 if (!WCONTINUED
883 || errno != EINVAL
884 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
885 return;
886
539 /* make sure we are called again until all childs have been reaped */ 887 /* make sure we are called again until all childs have been reaped */
888 /* we need to do it this way so that the callback gets called before we continue */
540 event (EV_A_ (W)sw, EV_SIGNAL); 889 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541 890
542 child_reap (EV_A_ sw, pid, pid, status); 891 child_reap (EV_A_ sw, pid, pid, status);
892 if (EV_PID_HASHSIZE > 1)
543 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 893 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
544 }
545} 894}
546 895
547#endif 896#endif
548 897
549/*****************************************************************************/ 898/*****************************************************************************/
550 899
900#if EV_USE_PORT
901# include "ev_port.c"
902#endif
551#if EV_USE_KQUEUE 903#if EV_USE_KQUEUE
552# include "ev_kqueue.c" 904# include "ev_kqueue.c"
553#endif 905#endif
554#if EV_USE_EPOLL 906#if EV_USE_EPOLL
555# include "ev_epoll.c" 907# include "ev_epoll.c"
556#endif 908#endif
557#if EV_USEV_POLL 909#if EV_USE_POLL
558# include "ev_poll.c" 910# include "ev_poll.c"
559#endif 911#endif
560#if EV_USE_SELECT 912#if EV_USE_SELECT
561# include "ev_select.c" 913# include "ev_select.c"
562#endif 914#endif
… …
572{ 924{
573 return EV_VERSION_MINOR; 925 return EV_VERSION_MINOR;
574} 926}
575 927
576/* return true if we are running with elevated privileges and should ignore env variables */ 928/* return true if we are running with elevated privileges and should ignore env variables */
577static int 929int inline_size
578enable_secure (void) 930enable_secure (void)
579{ 931{
580#ifdef WIN32 932#ifdef _WIN32
581 return 0; 933 return 0;
582#else 934#else
583 return getuid () != geteuid () 935 return getuid () != geteuid ()
584 || getgid () != getegid (); 936 || getgid () != getegid ();
585#endif 937#endif
586} 938}
587 939
588int 940unsigned int
589ev_method (EV_P) 941ev_supported_backends (void)
590{ 942{
591 return method; 943 unsigned int flags = 0;
592}
593 944
594int 945 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
595ev_init (EV_P_ int methods) 946 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
947 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
948 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
949 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
950
951 return flags;
952}
953
954unsigned int
955ev_recommended_backends (void)
596{ 956{
597 if (!method) 957 unsigned int flags = ev_supported_backends ();
958
959#ifndef __NetBSD__
960 /* kqueue is borked on everything but netbsd apparently */
961 /* it usually doesn't work correctly on anything but sockets and pipes */
962 flags &= ~EVBACKEND_KQUEUE;
963#endif
964#ifdef __APPLE__
965 // flags &= ~EVBACKEND_KQUEUE; for documentation
966 flags &= ~EVBACKEND_POLL;
967#endif
968
969 return flags;
970}
971
972unsigned int
973ev_embeddable_backends (void)
974{
975 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
976 return EVBACKEND_KQUEUE
977 | EVBACKEND_PORT;
978}
979
980unsigned int
981ev_backend (EV_P)
982{
983 return backend;
984}
985
986unsigned int
987ev_loop_count (EV_P)
988{
989 return loop_count;
990}
991
992void
993ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
994{
995 io_blocktime = interval;
996}
997
998void
999ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1000{
1001 timeout_blocktime = interval;
1002}
1003
1004static void noinline
1005loop_init (EV_P_ unsigned int flags)
1006{
1007 if (!backend)
598 { 1008 {
599#if EV_USE_MONOTONIC 1009#if EV_USE_MONOTONIC
600 { 1010 {
601 struct timespec ts; 1011 struct timespec ts;
602 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1012 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603 have_monotonic = 1; 1013 have_monotonic = 1;
604 } 1014 }
605#endif 1015#endif
606 1016
607 rt_now = ev_time (); 1017 ev_rt_now = ev_time ();
608 mn_now = get_clock (); 1018 mn_now = get_clock ();
609 now_floor = mn_now; 1019 now_floor = mn_now;
610 diff = rt_now - mn_now; 1020 rtmn_diff = ev_rt_now - mn_now;
611 1021
612 if (pipe (sigpipe)) 1022 io_blocktime = 0.;
613 return 0; 1023 timeout_blocktime = 0.;
614 1024
615 if (methods == EVMETHOD_AUTO) 1025 /* pid check not overridable via env */
616 if (!enable_secure () && getenv ("LIBmethodS")) 1026#ifndef _WIN32
617 methods = atoi (getenv ("LIBmethodS")); 1027 if (flags & EVFLAG_FORKCHECK)
618 else 1028 curpid = getpid ();
619 methods = EVMETHOD_ANY; 1029#endif
620 1030
621 method = 0; 1031 if (!(flags & EVFLAG_NOENV)
1032 && !enable_secure ()
1033 && getenv ("LIBEV_FLAGS"))
1034 flags = atoi (getenv ("LIBEV_FLAGS"));
1035
1036 if (!(flags & 0x0000ffffUL))
1037 flags |= ev_recommended_backends ();
1038
1039 backend = 0;
1040 backend_fd = -1;
1041#if EV_USE_INOTIFY
1042 fs_fd = -2;
1043#endif
1044
1045#if EV_USE_PORT
1046 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1047#endif
622#if EV_USE_KQUEUE 1048#if EV_USE_KQUEUE
623 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1049 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
624#endif 1050#endif
625#if EV_USE_EPOLL 1051#if EV_USE_EPOLL
626 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1052 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
627#endif 1053#endif
628#if EV_USEV_POLL 1054#if EV_USE_POLL
629 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1055 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
630#endif 1056#endif
631#if EV_USE_SELECT 1057#if EV_USE_SELECT
632 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1058 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
633#endif 1059#endif
634 1060
635 if (method) 1061 ev_init (&sigev, sigcb);
1062 ev_set_priority (&sigev, EV_MAXPRI);
1063 }
1064}
1065
1066static void noinline
1067loop_destroy (EV_P)
1068{
1069 int i;
1070
1071#if EV_USE_INOTIFY
1072 if (fs_fd >= 0)
1073 close (fs_fd);
1074#endif
1075
1076 if (backend_fd >= 0)
1077 close (backend_fd);
1078
1079#if EV_USE_PORT
1080 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1081#endif
1082#if EV_USE_KQUEUE
1083 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1084#endif
1085#if EV_USE_EPOLL
1086 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1087#endif
1088#if EV_USE_POLL
1089 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1090#endif
1091#if EV_USE_SELECT
1092 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1093#endif
1094
1095 for (i = NUMPRI; i--; )
1096 {
1097 array_free (pending, [i]);
1098#if EV_IDLE_ENABLE
1099 array_free (idle, [i]);
1100#endif
1101 }
1102
1103 ev_free (anfds); anfdmax = 0;
1104
1105 /* have to use the microsoft-never-gets-it-right macro */
1106 array_free (fdchange, EMPTY);
1107 array_free (timer, EMPTY);
1108#if EV_PERIODIC_ENABLE
1109 array_free (periodic, EMPTY);
1110#endif
1111#if EV_FORK_ENABLE
1112 array_free (fork, EMPTY);
1113#endif
1114 array_free (prepare, EMPTY);
1115 array_free (check, EMPTY);
1116
1117 backend = 0;
1118}
1119
1120void inline_size infy_fork (EV_P);
1121
1122void inline_size
1123loop_fork (EV_P)
1124{
1125#if EV_USE_PORT
1126 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1127#endif
1128#if EV_USE_KQUEUE
1129 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1130#endif
1131#if EV_USE_EPOLL
1132 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1133#endif
1134#if EV_USE_INOTIFY
1135 infy_fork (EV_A);
1136#endif
1137
1138 if (ev_is_active (&sigev))
1139 {
1140 /* default loop */
1141
1142 ev_ref (EV_A);
1143 ev_io_stop (EV_A_ &sigev);
1144 close (sigpipe [0]);
1145 close (sigpipe [1]);
1146
1147 while (pipe (sigpipe))
1148 syserr ("(libev) error creating pipe");
1149
1150 siginit (EV_A);
1151 }
1152
1153 postfork = 0;
1154}
1155
1156#if EV_MULTIPLICITY
1157struct ev_loop *
1158ev_loop_new (unsigned int flags)
1159{
1160 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1161
1162 memset (loop, 0, sizeof (struct ev_loop));
1163
1164 loop_init (EV_A_ flags);
1165
1166 if (ev_backend (EV_A))
1167 return loop;
1168
1169 return 0;
1170}
1171
1172void
1173ev_loop_destroy (EV_P)
1174{
1175 loop_destroy (EV_A);
1176 ev_free (loop);
1177}
1178
1179void
1180ev_loop_fork (EV_P)
1181{
1182 postfork = 1;
1183}
1184
1185#endif
1186
1187#if EV_MULTIPLICITY
1188struct ev_loop *
1189ev_default_loop_init (unsigned int flags)
1190#else
1191int
1192ev_default_loop (unsigned int flags)
1193#endif
1194{
1195 if (sigpipe [0] == sigpipe [1])
1196 if (pipe (sigpipe))
1197 return 0;
1198
1199 if (!ev_default_loop_ptr)
1200 {
1201#if EV_MULTIPLICITY
1202 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1203#else
1204 ev_default_loop_ptr = 1;
1205#endif
1206
1207 loop_init (EV_A_ flags);
1208
1209 if (ev_backend (EV_A))
636 { 1210 {
637 ev_watcher_init (&sigev, sigcb);
638 ev_set_priority (&sigev, EV_MAXPRI);
639 siginit (EV_A); 1211 siginit (EV_A);
640 1212
641#ifndef WIN32 1213#ifndef _WIN32
642 ev_signal_init (&childev, childcb, SIGCHLD); 1214 ev_signal_init (&childev, childcb, SIGCHLD);
643 ev_set_priority (&childev, EV_MAXPRI); 1215 ev_set_priority (&childev, EV_MAXPRI);
644 ev_signal_start (EV_A_ &childev); 1216 ev_signal_start (EV_A_ &childev);
645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1217 ev_unref (EV_A); /* child watcher should not keep loop alive */
646#endif 1218#endif
647 } 1219 }
1220 else
1221 ev_default_loop_ptr = 0;
648 } 1222 }
649 1223
650 return method; 1224 return ev_default_loop_ptr;
1225}
1226
1227void
1228ev_default_destroy (void)
1229{
1230#if EV_MULTIPLICITY
1231 struct ev_loop *loop = ev_default_loop_ptr;
1232#endif
1233
1234#ifndef _WIN32
1235 ev_ref (EV_A); /* child watcher */
1236 ev_signal_stop (EV_A_ &childev);
1237#endif
1238
1239 ev_ref (EV_A); /* signal watcher */
1240 ev_io_stop (EV_A_ &sigev);
1241
1242 close (sigpipe [0]); sigpipe [0] = 0;
1243 close (sigpipe [1]); sigpipe [1] = 0;
1244
1245 loop_destroy (EV_A);
1246}
1247
1248void
1249ev_default_fork (void)
1250{
1251#if EV_MULTIPLICITY
1252 struct ev_loop *loop = ev_default_loop_ptr;
1253#endif
1254
1255 if (backend)
1256 postfork = 1;
651} 1257}
652 1258
653/*****************************************************************************/ 1259/*****************************************************************************/
654 1260
655void 1261void
656ev_fork_prepare (void) 1262ev_invoke (EV_P_ void *w, int revents)
657{ 1263{
658 /* nop */ 1264 EV_CB_INVOKE ((W)w, revents);
659} 1265}
660 1266
661void 1267void inline_speed
662ev_fork_parent (void)
663{
664 /* nop */
665}
666
667void
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}
681
682/*****************************************************************************/
683
684static void
685call_pending (EV_P) 1268call_pending (EV_P)
686{ 1269{
687 int pri; 1270 int pri;
688 1271
689 for (pri = NUMPRI; pri--; ) 1272 for (pri = NUMPRI; pri--; )
690 while (pendingcnt [pri]) 1273 while (pendingcnt [pri])
691 { 1274 {
692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1275 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693 1276
694 if (p->w) 1277 if (expect_true (p->w))
695 { 1278 {
1279 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1280
696 p->w->pending = 0; 1281 p->w->pending = 0;
697 p->w->cb (EV_A_ p->w, p->events); 1282 EV_CB_INVOKE (p->w, p->events);
698 } 1283 }
699 } 1284 }
700} 1285}
701 1286
702static void 1287void inline_size
703timers_reify (EV_P) 1288timers_reify (EV_P)
704{ 1289{
705 while (timercnt && timers [0]->at <= mn_now) 1290 while (timercnt && ((WT)timers [0])->at <= mn_now)
706 { 1291 {
707 struct ev_timer *w = timers [0]; 1292 ev_timer *w = (ev_timer *)timers [0];
1293
1294 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
708 1295
709 /* first reschedule or stop timer */ 1296 /* first reschedule or stop timer */
710 if (w->repeat) 1297 if (w->repeat)
711 { 1298 {
712 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1299 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1300
713 w->at = mn_now + w->repeat; 1301 ((WT)w)->at += w->repeat;
1302 if (((WT)w)->at < mn_now)
1303 ((WT)w)->at = mn_now;
1304
714 downheap ((WT *)timers, timercnt, 0); 1305 downheap (timers, timercnt, 0);
715 } 1306 }
716 else 1307 else
717 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1308 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718 1309
719 event ((W)w, EV_TIMEOUT); 1310 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720 } 1311 }
721} 1312}
722 1313
723static void 1314#if EV_PERIODIC_ENABLE
1315void inline_size
724periodics_reify (EV_P) 1316periodics_reify (EV_P)
725{ 1317{
726 while (periodiccnt && periodics [0]->at <= rt_now) 1318 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727 { 1319 {
728 struct ev_periodic *w = periodics [0]; 1320 ev_periodic *w = (ev_periodic *)periodics [0];
1321
1322 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
729 1323
730 /* first reschedule or stop timer */ 1324 /* first reschedule or stop timer */
731 if (w->interval) 1325 if (w->reschedule_cb)
732 { 1326 {
1327 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1328 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1329 downheap (periodics, periodiccnt, 0);
1330 }
1331 else if (w->interval)
1332 {
733 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1333 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1334 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
734 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1335 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); 1336 downheap (periodics, periodiccnt, 0);
736 } 1337 }
737 else 1338 else
738 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1339 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739 1340
740 event (EV_A_ (W)w, EV_PERIODIC); 1341 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741 } 1342 }
742} 1343}
743 1344
744static void 1345static void noinline
745periodics_reschedule (EV_P_ ev_tstamp diff) 1346periodics_reschedule (EV_P)
746{ 1347{
747 int i; 1348 int i;
748 1349
749 /* adjust periodics after time jump */ 1350 /* adjust periodics after time jump */
750 for (i = 0; i < periodiccnt; ++i) 1351 for (i = 0; i < periodiccnt; ++i)
751 { 1352 {
752 struct ev_periodic *w = periodics [i]; 1353 ev_periodic *w = (ev_periodic *)periodics [i];
753 1354
1355 if (w->reschedule_cb)
1356 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754 if (w->interval) 1357 else if (w->interval)
1358 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1359 }
1360
1361 /* now rebuild the heap */
1362 for (i = periodiccnt >> 1; i--; )
1363 downheap (periodics, periodiccnt, i);
1364}
1365#endif
1366
1367#if EV_IDLE_ENABLE
1368void inline_size
1369idle_reify (EV_P)
1370{
1371 if (expect_false (idleall))
1372 {
1373 int pri;
1374
1375 for (pri = NUMPRI; pri--; )
755 { 1376 {
756 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1377 if (pendingcnt [pri])
1378 break;
757 1379
758 if (fabs (diff) >= 1e-4) 1380 if (idlecnt [pri])
759 { 1381 {
760 ev_periodic_stop (EV_A_ w); 1382 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
761 ev_periodic_start (EV_A_ w); 1383 break;
762
763 i = 0; /* restart loop, inefficient, but time jumps should be rare */
764 } 1384 }
765 } 1385 }
766 } 1386 }
767} 1387}
1388#endif
768 1389
769inline int 1390void inline_speed
770time_update_monotonic (EV_P) 1391time_update (EV_P_ ev_tstamp max_block)
771{
772 mn_now = get_clock ();
773
774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775 {
776 rt_now = mn_now + diff;
777 return 0;
778 }
779 else
780 {
781 now_floor = mn_now;
782 rt_now = ev_time ();
783 return 1;
784 }
785}
786
787static void
788time_update (EV_P)
789{ 1392{
790 int i; 1393 int i;
791 1394
792#if EV_USE_MONOTONIC 1395#if EV_USE_MONOTONIC
793 if (expect_true (have_monotonic)) 1396 if (expect_true (have_monotonic))
794 { 1397 {
795 if (time_update_monotonic (EV_A)) 1398 ev_tstamp odiff = rtmn_diff;
1399
1400 mn_now = get_clock ();
1401
1402 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1403 /* interpolate in the meantime */
1404 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
796 { 1405 {
797 ev_tstamp odiff = diff; 1406 ev_rt_now = rtmn_diff + mn_now;
798 1407 return;
799 for (i = 4; --i; ) /* loop a few times, before making important decisions */
800 {
801 diff = rt_now - mn_now;
802
803 if (fabs (odiff - diff) < MIN_TIMEJUMP)
804 return; /* all is well */
805
806 rt_now = ev_time ();
807 mn_now = get_clock ();
808 now_floor = mn_now;
809 }
810
811 periodics_reschedule (EV_A_ diff - odiff);
812 /* no timer adjustment, as the monotonic clock doesn't jump */
813 } 1408 }
1409
1410 now_floor = mn_now;
1411 ev_rt_now = ev_time ();
1412
1413 /* loop a few times, before making important decisions.
1414 * on the choice of "4": one iteration isn't enough,
1415 * in case we get preempted during the calls to
1416 * ev_time and get_clock. a second call is almost guaranteed
1417 * to succeed in that case, though. and looping a few more times
1418 * doesn't hurt either as we only do this on time-jumps or
1419 * in the unlikely event of having been preempted here.
1420 */
1421 for (i = 4; --i; )
1422 {
1423 rtmn_diff = ev_rt_now - mn_now;
1424
1425 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1426 return; /* all is well */
1427
1428 ev_rt_now = ev_time ();
1429 mn_now = get_clock ();
1430 now_floor = mn_now;
1431 }
1432
1433# if EV_PERIODIC_ENABLE
1434 periodics_reschedule (EV_A);
1435# endif
1436 /* no timer adjustment, as the monotonic clock doesn't jump */
1437 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
814 } 1438 }
815 else 1439 else
816#endif 1440#endif
817 { 1441 {
818 rt_now = ev_time (); 1442 ev_rt_now = ev_time ();
819 1443
820 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1444 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
821 { 1445 {
1446#if EV_PERIODIC_ENABLE
822 periodics_reschedule (EV_A_ rt_now - mn_now); 1447 periodics_reschedule (EV_A);
823 1448#endif
824 /* adjust timers. this is easy, as the offset is the same for all */ 1449 /* adjust timers. this is easy, as the offset is the same for all of them */
825 for (i = 0; i < timercnt; ++i) 1450 for (i = 0; i < timercnt; ++i)
826 timers [i]->at += diff; 1451 ((WT)timers [i])->at += ev_rt_now - mn_now;
827 } 1452 }
828 1453
829 mn_now = rt_now; 1454 mn_now = ev_rt_now;
830 } 1455 }
831} 1456}
832 1457
833void 1458void
834ev_ref (EV_P) 1459ev_ref (EV_P)
… …
845static int loop_done; 1470static int loop_done;
846 1471
847void 1472void
848ev_loop (EV_P_ int flags) 1473ev_loop (EV_P_ int flags)
849{ 1474{
850 double block;
851 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1475 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1476 ? EVUNLOOP_ONE
1477 : EVUNLOOP_CANCEL;
1478
1479 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
852 1480
853 do 1481 do
854 { 1482 {
1483#ifndef _WIN32
1484 if (expect_false (curpid)) /* penalise the forking check even more */
1485 if (expect_false (getpid () != curpid))
1486 {
1487 curpid = getpid ();
1488 postfork = 1;
1489 }
1490#endif
1491
1492#if EV_FORK_ENABLE
1493 /* we might have forked, so queue fork handlers */
1494 if (expect_false (postfork))
1495 if (forkcnt)
1496 {
1497 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1498 call_pending (EV_A);
1499 }
1500#endif
1501
855 /* queue check watchers (and execute them) */ 1502 /* queue prepare watchers (and execute them) */
856 if (expect_false (preparecnt)) 1503 if (expect_false (preparecnt))
857 { 1504 {
858 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1505 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859 call_pending (EV_A); 1506 call_pending (EV_A);
860 } 1507 }
861 1508
1509 if (expect_false (!activecnt))
1510 break;
1511
1512 /* we might have forked, so reify kernel state if necessary */
1513 if (expect_false (postfork))
1514 loop_fork (EV_A);
1515
862 /* update fd-related kernel structures */ 1516 /* update fd-related kernel structures */
863 fd_reify (EV_A); 1517 fd_reify (EV_A);
864 1518
865 /* calculate blocking time */ 1519 /* calculate blocking time */
1520 {
1521 ev_tstamp waittime = 0.;
1522 ev_tstamp sleeptime = 0.;
866 1523
867 /* we only need this for !monotonic clockor timers, but as we basically 1524 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
868 always have timers, we just calculate it always */
869#if EV_USE_MONOTONIC
870 if (expect_true (have_monotonic))
871 time_update_monotonic (EV_A);
872 else
873#endif
874 { 1525 {
875 rt_now = ev_time (); 1526 /* update time to cancel out callback processing overhead */
876 mn_now = rt_now; 1527 time_update (EV_A_ 1e100);
877 }
878 1528
879 if (flags & EVLOOP_NONBLOCK || idlecnt)
880 block = 0.;
881 else
882 {
883 block = MAX_BLOCKTIME; 1529 waittime = MAX_BLOCKTIME;
884 1530
885 if (timercnt) 1531 if (timercnt)
886 { 1532 {
887 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1533 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
888 if (block > to) block = to; 1534 if (waittime > to) waittime = to;
889 } 1535 }
890 1536
1537#if EV_PERIODIC_ENABLE
891 if (periodiccnt) 1538 if (periodiccnt)
892 { 1539 {
893 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1540 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
894 if (block > to) block = to; 1541 if (waittime > to) waittime = to;
895 } 1542 }
1543#endif
896 1544
897 if (block < 0.) block = 0.; 1545 if (expect_false (waittime < timeout_blocktime))
1546 waittime = timeout_blocktime;
1547
1548 sleeptime = waittime - backend_fudge;
1549
1550 if (expect_true (sleeptime > io_blocktime))
1551 sleeptime = io_blocktime;
1552
1553 if (sleeptime)
1554 {
1555 ev_sleep (sleeptime);
1556 waittime -= sleeptime;
1557 }
898 } 1558 }
899 1559
900 method_poll (EV_A_ block); 1560 ++loop_count;
1561 backend_poll (EV_A_ waittime);
901 1562
902 /* update rt_now, do magic */ 1563 /* update ev_rt_now, do magic */
903 time_update (EV_A); 1564 time_update (EV_A_ waittime + sleeptime);
1565 }
904 1566
905 /* queue pending timers and reschedule them */ 1567 /* queue pending timers and reschedule them */
906 timers_reify (EV_A); /* relative timers called last */ 1568 timers_reify (EV_A); /* relative timers called last */
1569#if EV_PERIODIC_ENABLE
907 periodics_reify (EV_A); /* absolute timers called first */ 1570 periodics_reify (EV_A); /* absolute timers called first */
1571#endif
908 1572
1573#if EV_IDLE_ENABLE
909 /* queue idle watchers unless io or timers are pending */ 1574 /* queue idle watchers unless other events are pending */
910 if (!pendingcnt) 1575 idle_reify (EV_A);
911 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1576#endif
912 1577
913 /* queue check watchers, to be executed first */ 1578 /* queue check watchers, to be executed first */
914 if (checkcnt) 1579 if (expect_false (checkcnt))
915 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1580 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916 1581
917 call_pending (EV_A); 1582 call_pending (EV_A);
1583
918 } 1584 }
919 while (activecnt && !loop_done); 1585 while (expect_true (activecnt && !loop_done));
920 1586
921 if (loop_done != 2) 1587 if (loop_done == EVUNLOOP_ONE)
922 loop_done = 0; 1588 loop_done = EVUNLOOP_CANCEL;
923} 1589}
924 1590
925void 1591void
926ev_unloop (EV_P_ int how) 1592ev_unloop (EV_P_ int how)
927{ 1593{
928 loop_done = how; 1594 loop_done = how;
929} 1595}
930 1596
931/*****************************************************************************/ 1597/*****************************************************************************/
932 1598
933inline void 1599void inline_size
934wlist_add (WL *head, WL elem) 1600wlist_add (WL *head, WL elem)
935{ 1601{
936 elem->next = *head; 1602 elem->next = *head;
937 *head = elem; 1603 *head = elem;
938} 1604}
939 1605
940inline void 1606void inline_size
941wlist_del (WL *head, WL elem) 1607wlist_del (WL *head, WL elem)
942{ 1608{
943 while (*head) 1609 while (*head)
944 { 1610 {
945 if (*head == elem) 1611 if (*head == elem)
… …
950 1616
951 head = &(*head)->next; 1617 head = &(*head)->next;
952 } 1618 }
953} 1619}
954 1620
955inline void 1621void inline_speed
956ev_clear_pending (EV_P_ W w) 1622clear_pending (EV_P_ W w)
957{ 1623{
958 if (w->pending) 1624 if (w->pending)
959 { 1625 {
960 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1626 pendings [ABSPRI (w)][w->pending - 1].w = 0;
961 w->pending = 0; 1627 w->pending = 0;
962 } 1628 }
963} 1629}
964 1630
965inline void 1631int
1632ev_clear_pending (EV_P_ void *w)
1633{
1634 W w_ = (W)w;
1635 int pending = w_->pending;
1636
1637 if (expect_true (pending))
1638 {
1639 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1640 w_->pending = 0;
1641 p->w = 0;
1642 return p->events;
1643 }
1644 else
1645 return 0;
1646}
1647
1648void inline_size
1649pri_adjust (EV_P_ W w)
1650{
1651 int pri = w->priority;
1652 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1653 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1654 w->priority = pri;
1655}
1656
1657void inline_speed
966ev_start (EV_P_ W w, int active) 1658ev_start (EV_P_ W w, int active)
967{ 1659{
968 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1660 pri_adjust (EV_A_ w);
969 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
970
971 w->active = active; 1661 w->active = active;
972 ev_ref (EV_A); 1662 ev_ref (EV_A);
973} 1663}
974 1664
975inline void 1665void inline_size
976ev_stop (EV_P_ W w) 1666ev_stop (EV_P_ W w)
977{ 1667{
978 ev_unref (EV_A); 1668 ev_unref (EV_A);
979 w->active = 0; 1669 w->active = 0;
980} 1670}
981 1671
982/*****************************************************************************/ 1672/*****************************************************************************/
983 1673
984void 1674void noinline
985ev_io_start (EV_P_ struct ev_io *w) 1675ev_io_start (EV_P_ ev_io *w)
986{ 1676{
987 int fd = w->fd; 1677 int fd = w->fd;
988 1678
989 if (ev_is_active (w)) 1679 if (expect_false (ev_is_active (w)))
990 return; 1680 return;
991 1681
992 assert (("ev_io_start called with negative fd", fd >= 0)); 1682 assert (("ev_io_start called with negative fd", fd >= 0));
993 1683
994 ev_start (EV_A_ (W)w, 1); 1684 ev_start (EV_A_ (W)w, 1);
995 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1685 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1686 wlist_add (&anfds[fd].head, (WL)w);
997 1687
998 fd_change (EV_A_ fd); 1688 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1689 w->events &= ~EV_IOFDSET;
999} 1690}
1000 1691
1001void 1692void noinline
1002ev_io_stop (EV_P_ struct ev_io *w) 1693ev_io_stop (EV_P_ ev_io *w)
1003{ 1694{
1004 ev_clear_pending (EV_A_ (W)w); 1695 clear_pending (EV_A_ (W)w);
1005 if (!ev_is_active (w)) 1696 if (expect_false (!ev_is_active (w)))
1006 return; 1697 return;
1007 1698
1699 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1700
1008 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1701 wlist_del (&anfds[w->fd].head, (WL)w);
1009 ev_stop (EV_A_ (W)w); 1702 ev_stop (EV_A_ (W)w);
1010 1703
1011 fd_change (EV_A_ w->fd); 1704 fd_change (EV_A_ w->fd, 1);
1012} 1705}
1013 1706
1014void 1707void noinline
1015ev_timer_start (EV_P_ struct ev_timer *w) 1708ev_timer_start (EV_P_ ev_timer *w)
1016{ 1709{
1017 if (ev_is_active (w)) 1710 if (expect_false (ev_is_active (w)))
1018 return; 1711 return;
1019 1712
1020 w->at += mn_now; 1713 ((WT)w)->at += mn_now;
1021 1714
1022 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1715 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023 1716
1024 ev_start (EV_A_ (W)w, ++timercnt); 1717 ev_start (EV_A_ (W)w, ++timercnt);
1025 array_needsize (timers, timermax, timercnt, ); 1718 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1026 timers [timercnt - 1] = w; 1719 timers [timercnt - 1] = (WT)w;
1027 upheap ((WT *)timers, timercnt - 1); 1720 upheap (timers, timercnt - 1);
1028}
1029 1721
1030void 1722 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1723}
1724
1725void noinline
1031ev_timer_stop (EV_P_ struct ev_timer *w) 1726ev_timer_stop (EV_P_ ev_timer *w)
1032{ 1727{
1033 ev_clear_pending (EV_A_ (W)w); 1728 clear_pending (EV_A_ (W)w);
1034 if (!ev_is_active (w)) 1729 if (expect_false (!ev_is_active (w)))
1035 return; 1730 return;
1036 1731
1037 if (w->active < timercnt--) 1732 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1733
1734 {
1735 int active = ((W)w)->active;
1736
1737 if (expect_true (--active < --timercnt))
1038 { 1738 {
1039 timers [w->active - 1] = timers [timercnt]; 1739 timers [active] = timers [timercnt];
1040 downheap ((WT *)timers, timercnt, w->active - 1); 1740 adjustheap (timers, timercnt, active);
1041 } 1741 }
1742 }
1042 1743
1043 w->at = w->repeat; 1744 ((WT)w)->at -= mn_now;
1044 1745
1045 ev_stop (EV_A_ (W)w); 1746 ev_stop (EV_A_ (W)w);
1046} 1747}
1047 1748
1048void 1749void noinline
1049ev_timer_again (EV_P_ struct ev_timer *w) 1750ev_timer_again (EV_P_ ev_timer *w)
1050{ 1751{
1051 if (ev_is_active (w)) 1752 if (ev_is_active (w))
1052 { 1753 {
1053 if (w->repeat) 1754 if (w->repeat)
1054 { 1755 {
1055 w->at = mn_now + w->repeat; 1756 ((WT)w)->at = mn_now + w->repeat;
1056 downheap ((WT *)timers, timercnt, w->active - 1); 1757 adjustheap (timers, timercnt, ((W)w)->active - 1);
1057 } 1758 }
1058 else 1759 else
1059 ev_timer_stop (EV_A_ w); 1760 ev_timer_stop (EV_A_ w);
1060 } 1761 }
1061 else if (w->repeat) 1762 else if (w->repeat)
1763 {
1764 w->at = w->repeat;
1062 ev_timer_start (EV_A_ w); 1765 ev_timer_start (EV_A_ w);
1766 }
1063} 1767}
1064 1768
1065void 1769#if EV_PERIODIC_ENABLE
1770void noinline
1066ev_periodic_start (EV_P_ struct ev_periodic *w) 1771ev_periodic_start (EV_P_ ev_periodic *w)
1067{ 1772{
1068 if (ev_is_active (w)) 1773 if (expect_false (ev_is_active (w)))
1069 return; 1774 return;
1070 1775
1776 if (w->reschedule_cb)
1777 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1778 else if (w->interval)
1779 {
1071 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1780 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 */ 1781 /* 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; 1782 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1783 }
1784 else
1785 ((WT)w)->at = w->offset;
1076 1786
1077 ev_start (EV_A_ (W)w, ++periodiccnt); 1787 ev_start (EV_A_ (W)w, ++periodiccnt);
1078 array_needsize (periodics, periodicmax, periodiccnt, ); 1788 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1079 periodics [periodiccnt - 1] = w; 1789 periodics [periodiccnt - 1] = (WT)w;
1080 upheap ((WT *)periodics, periodiccnt - 1); 1790 upheap (periodics, periodiccnt - 1);
1081}
1082 1791
1083void 1792 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1793}
1794
1795void noinline
1084ev_periodic_stop (EV_P_ struct ev_periodic *w) 1796ev_periodic_stop (EV_P_ ev_periodic *w)
1085{ 1797{
1086 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1087 if (!ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1088 return; 1800 return;
1089 1801
1090 if (w->active < periodiccnt--) 1802 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1803
1804 {
1805 int active = ((W)w)->active;
1806
1807 if (expect_true (--active < --periodiccnt))
1091 { 1808 {
1092 periodics [w->active - 1] = periodics [periodiccnt]; 1809 periodics [active] = periodics [periodiccnt];
1093 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1810 adjustheap (periodics, periodiccnt, active);
1094 } 1811 }
1812 }
1095 1813
1096 ev_stop (EV_A_ (W)w); 1814 ev_stop (EV_A_ (W)w);
1097} 1815}
1816
1817void noinline
1818ev_periodic_again (EV_P_ ev_periodic *w)
1819{
1820 /* TODO: use adjustheap and recalculation */
1821 ev_periodic_stop (EV_A_ w);
1822 ev_periodic_start (EV_A_ w);
1823}
1824#endif
1098 1825
1099#ifndef SA_RESTART 1826#ifndef SA_RESTART
1100# define SA_RESTART 0 1827# define SA_RESTART 0
1101#endif 1828#endif
1102 1829
1103void 1830void noinline
1104ev_signal_start (EV_P_ struct ev_signal *w) 1831ev_signal_start (EV_P_ ev_signal *w)
1105{ 1832{
1833#if EV_MULTIPLICITY
1834 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1835#endif
1106 if (ev_is_active (w)) 1836 if (expect_false (ev_is_active (w)))
1107 return; 1837 return;
1108 1838
1109 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1839 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110 1840
1841 {
1842#ifndef _WIN32
1843 sigset_t full, prev;
1844 sigfillset (&full);
1845 sigprocmask (SIG_SETMASK, &full, &prev);
1846#endif
1847
1848 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1849
1850#ifndef _WIN32
1851 sigprocmask (SIG_SETMASK, &prev, 0);
1852#endif
1853 }
1854
1111 ev_start (EV_A_ (W)w, 1); 1855 ev_start (EV_A_ (W)w, 1);
1112 array_needsize (signals, signalmax, w->signum, signals_init);
1113 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1856 wlist_add (&signals [w->signum - 1].head, (WL)w);
1114 1857
1115 if (!w->next) 1858 if (!((WL)w)->next)
1116 { 1859 {
1860#if _WIN32
1861 signal (w->signum, sighandler);
1862#else
1117 struct sigaction sa; 1863 struct sigaction sa;
1118 sa.sa_handler = sighandler; 1864 sa.sa_handler = sighandler;
1119 sigfillset (&sa.sa_mask); 1865 sigfillset (&sa.sa_mask);
1120 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1866 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121 sigaction (w->signum, &sa, 0); 1867 sigaction (w->signum, &sa, 0);
1868#endif
1122 } 1869 }
1123} 1870}
1124 1871
1125void 1872void noinline
1126ev_signal_stop (EV_P_ struct ev_signal *w) 1873ev_signal_stop (EV_P_ ev_signal *w)
1127{ 1874{
1128 ev_clear_pending (EV_A_ (W)w); 1875 clear_pending (EV_A_ (W)w);
1129 if (!ev_is_active (w)) 1876 if (expect_false (!ev_is_active (w)))
1130 return; 1877 return;
1131 1878
1132 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1879 wlist_del (&signals [w->signum - 1].head, (WL)w);
1133 ev_stop (EV_A_ (W)w); 1880 ev_stop (EV_A_ (W)w);
1134 1881
1135 if (!signals [w->signum - 1].head) 1882 if (!signals [w->signum - 1].head)
1136 signal (w->signum, SIG_DFL); 1883 signal (w->signum, SIG_DFL);
1137} 1884}
1138 1885
1139void 1886void
1140ev_idle_start (EV_P_ struct ev_idle *w) 1887ev_child_start (EV_P_ ev_child *w)
1141{ 1888{
1889#if EV_MULTIPLICITY
1890 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1891#endif
1142 if (ev_is_active (w)) 1892 if (expect_false (ev_is_active (w)))
1143 return; 1893 return;
1144 1894
1145 ev_start (EV_A_ (W)w, ++idlecnt); 1895 ev_start (EV_A_ (W)w, 1);
1146 array_needsize (idles, idlemax, idlecnt, ); 1896 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147 idles [idlecnt - 1] = w;
1148} 1897}
1149 1898
1150void 1899void
1151ev_idle_stop (EV_P_ struct ev_idle *w) 1900ev_child_stop (EV_P_ ev_child *w)
1152{ 1901{
1153 ev_clear_pending (EV_A_ (W)w); 1902 clear_pending (EV_A_ (W)w);
1154 if (ev_is_active (w)) 1903 if (expect_false (!ev_is_active (w)))
1155 return; 1904 return;
1156 1905
1157 idles [w->active - 1] = idles [--idlecnt]; 1906 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1158 ev_stop (EV_A_ (W)w); 1907 ev_stop (EV_A_ (W)w);
1159} 1908}
1160 1909
1910#if EV_STAT_ENABLE
1911
1912# ifdef _WIN32
1913# undef lstat
1914# define lstat(a,b) _stati64 (a,b)
1915# endif
1916
1917#define DEF_STAT_INTERVAL 5.0074891
1918#define MIN_STAT_INTERVAL 0.1074891
1919
1920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1921
1922#if EV_USE_INOTIFY
1923# define EV_INOTIFY_BUFSIZE 8192
1924
1925static void noinline
1926infy_add (EV_P_ ev_stat *w)
1927{
1928 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1929
1930 if (w->wd < 0)
1931 {
1932 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1933
1934 /* monitor some parent directory for speedup hints */
1935 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1936 {
1937 char path [4096];
1938 strcpy (path, w->path);
1939
1940 do
1941 {
1942 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1943 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1944
1945 char *pend = strrchr (path, '/');
1946
1947 if (!pend)
1948 break; /* whoops, no '/', complain to your admin */
1949
1950 *pend = 0;
1951 w->wd = inotify_add_watch (fs_fd, path, mask);
1952 }
1953 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1954 }
1955 }
1956 else
1957 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1958
1959 if (w->wd >= 0)
1960 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1961}
1962
1963static void noinline
1964infy_del (EV_P_ ev_stat *w)
1965{
1966 int slot;
1967 int wd = w->wd;
1968
1969 if (wd < 0)
1970 return;
1971
1972 w->wd = -2;
1973 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1974 wlist_del (&fs_hash [slot].head, (WL)w);
1975
1976 /* remove this watcher, if others are watching it, they will rearm */
1977 inotify_rm_watch (fs_fd, wd);
1978}
1979
1980static void noinline
1981infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1982{
1983 if (slot < 0)
1984 /* overflow, need to check for all hahs slots */
1985 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1986 infy_wd (EV_A_ slot, wd, ev);
1987 else
1988 {
1989 WL w_;
1990
1991 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1992 {
1993 ev_stat *w = (ev_stat *)w_;
1994 w_ = w_->next; /* lets us remove this watcher and all before it */
1995
1996 if (w->wd == wd || wd == -1)
1997 {
1998 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1999 {
2000 w->wd = -1;
2001 infy_add (EV_A_ w); /* re-add, no matter what */
2002 }
2003
2004 stat_timer_cb (EV_A_ &w->timer, 0);
2005 }
2006 }
2007 }
2008}
2009
2010static void
2011infy_cb (EV_P_ ev_io *w, int revents)
2012{
2013 char buf [EV_INOTIFY_BUFSIZE];
2014 struct inotify_event *ev = (struct inotify_event *)buf;
2015 int ofs;
2016 int len = read (fs_fd, buf, sizeof (buf));
2017
2018 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2019 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2020}
2021
2022void inline_size
2023infy_init (EV_P)
2024{
2025 if (fs_fd != -2)
2026 return;
2027
2028 fs_fd = inotify_init ();
2029
2030 if (fs_fd >= 0)
2031 {
2032 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2033 ev_set_priority (&fs_w, EV_MAXPRI);
2034 ev_io_start (EV_A_ &fs_w);
2035 }
2036}
2037
2038void inline_size
2039infy_fork (EV_P)
2040{
2041 int slot;
2042
2043 if (fs_fd < 0)
2044 return;
2045
2046 close (fs_fd);
2047 fs_fd = inotify_init ();
2048
2049 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2050 {
2051 WL w_ = fs_hash [slot].head;
2052 fs_hash [slot].head = 0;
2053
2054 while (w_)
2055 {
2056 ev_stat *w = (ev_stat *)w_;
2057 w_ = w_->next; /* lets us add this watcher */
2058
2059 w->wd = -1;
2060
2061 if (fs_fd >= 0)
2062 infy_add (EV_A_ w); /* re-add, no matter what */
2063 else
2064 ev_timer_start (EV_A_ &w->timer);
2065 }
2066
2067 }
2068}
2069
2070#endif
2071
1161void 2072void
2073ev_stat_stat (EV_P_ ev_stat *w)
2074{
2075 if (lstat (w->path, &w->attr) < 0)
2076 w->attr.st_nlink = 0;
2077 else if (!w->attr.st_nlink)
2078 w->attr.st_nlink = 1;
2079}
2080
2081static void noinline
2082stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2083{
2084 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2085
2086 /* we copy this here each the time so that */
2087 /* prev has the old value when the callback gets invoked */
2088 w->prev = w->attr;
2089 ev_stat_stat (EV_A_ w);
2090
2091 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2092 if (
2093 w->prev.st_dev != w->attr.st_dev
2094 || w->prev.st_ino != w->attr.st_ino
2095 || w->prev.st_mode != w->attr.st_mode
2096 || w->prev.st_nlink != w->attr.st_nlink
2097 || w->prev.st_uid != w->attr.st_uid
2098 || w->prev.st_gid != w->attr.st_gid
2099 || w->prev.st_rdev != w->attr.st_rdev
2100 || w->prev.st_size != w->attr.st_size
2101 || w->prev.st_atime != w->attr.st_atime
2102 || w->prev.st_mtime != w->attr.st_mtime
2103 || w->prev.st_ctime != w->attr.st_ctime
2104 ) {
2105 #if EV_USE_INOTIFY
2106 infy_del (EV_A_ w);
2107 infy_add (EV_A_ w);
2108 ev_stat_stat (EV_A_ w); /* avoid race... */
2109 #endif
2110
2111 ev_feed_event (EV_A_ w, EV_STAT);
2112 }
2113}
2114
2115void
2116ev_stat_start (EV_P_ ev_stat *w)
2117{
2118 if (expect_false (ev_is_active (w)))
2119 return;
2120
2121 /* since we use memcmp, we need to clear any padding data etc. */
2122 memset (&w->prev, 0, sizeof (ev_statdata));
2123 memset (&w->attr, 0, sizeof (ev_statdata));
2124
2125 ev_stat_stat (EV_A_ w);
2126
2127 if (w->interval < MIN_STAT_INTERVAL)
2128 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2129
2130 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2131 ev_set_priority (&w->timer, ev_priority (w));
2132
2133#if EV_USE_INOTIFY
2134 infy_init (EV_A);
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w);
2138 else
2139#endif
2140 ev_timer_start (EV_A_ &w->timer);
2141
2142 ev_start (EV_A_ (W)w, 1);
2143}
2144
2145void
2146ev_stat_stop (EV_P_ ev_stat *w)
2147{
2148 clear_pending (EV_A_ (W)w);
2149 if (expect_false (!ev_is_active (w)))
2150 return;
2151
2152#if EV_USE_INOTIFY
2153 infy_del (EV_A_ w);
2154#endif
2155 ev_timer_stop (EV_A_ &w->timer);
2156
2157 ev_stop (EV_A_ (W)w);
2158}
2159#endif
2160
2161#if EV_IDLE_ENABLE
2162void
2163ev_idle_start (EV_P_ ev_idle *w)
2164{
2165 if (expect_false (ev_is_active (w)))
2166 return;
2167
2168 pri_adjust (EV_A_ (W)w);
2169
2170 {
2171 int active = ++idlecnt [ABSPRI (w)];
2172
2173 ++idleall;
2174 ev_start (EV_A_ (W)w, active);
2175
2176 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2177 idles [ABSPRI (w)][active - 1] = w;
2178 }
2179}
2180
2181void
2182ev_idle_stop (EV_P_ ev_idle *w)
2183{
2184 clear_pending (EV_A_ (W)w);
2185 if (expect_false (!ev_is_active (w)))
2186 return;
2187
2188 {
2189 int active = ((W)w)->active;
2190
2191 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2192 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2193
2194 ev_stop (EV_A_ (W)w);
2195 --idleall;
2196 }
2197}
2198#endif
2199
2200void
1162ev_prepare_start (EV_P_ struct ev_prepare *w) 2201ev_prepare_start (EV_P_ ev_prepare *w)
1163{ 2202{
1164 if (ev_is_active (w)) 2203 if (expect_false (ev_is_active (w)))
1165 return; 2204 return;
1166 2205
1167 ev_start (EV_A_ (W)w, ++preparecnt); 2206 ev_start (EV_A_ (W)w, ++preparecnt);
1168 array_needsize (prepares, preparemax, preparecnt, ); 2207 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1169 prepares [preparecnt - 1] = w; 2208 prepares [preparecnt - 1] = w;
1170} 2209}
1171 2210
1172void 2211void
1173ev_prepare_stop (EV_P_ struct ev_prepare *w) 2212ev_prepare_stop (EV_P_ ev_prepare *w)
1174{ 2213{
1175 ev_clear_pending (EV_A_ (W)w); 2214 clear_pending (EV_A_ (W)w);
1176 if (ev_is_active (w)) 2215 if (expect_false (!ev_is_active (w)))
1177 return; 2216 return;
1178 2217
2218 {
2219 int active = ((W)w)->active;
1179 prepares [w->active - 1] = prepares [--preparecnt]; 2220 prepares [active - 1] = prepares [--preparecnt];
2221 ((W)prepares [active - 1])->active = active;
2222 }
2223
1180 ev_stop (EV_A_ (W)w); 2224 ev_stop (EV_A_ (W)w);
1181} 2225}
1182 2226
1183void 2227void
1184ev_check_start (EV_P_ struct ev_check *w) 2228ev_check_start (EV_P_ ev_check *w)
1185{ 2229{
1186 if (ev_is_active (w)) 2230 if (expect_false (ev_is_active (w)))
1187 return; 2231 return;
1188 2232
1189 ev_start (EV_A_ (W)w, ++checkcnt); 2233 ev_start (EV_A_ (W)w, ++checkcnt);
1190 array_needsize (checks, checkmax, checkcnt, ); 2234 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1191 checks [checkcnt - 1] = w; 2235 checks [checkcnt - 1] = w;
1192} 2236}
1193 2237
1194void 2238void
1195ev_check_stop (EV_P_ struct ev_check *w) 2239ev_check_stop (EV_P_ ev_check *w)
1196{ 2240{
1197 ev_clear_pending (EV_A_ (W)w); 2241 clear_pending (EV_A_ (W)w);
1198 if (ev_is_active (w)) 2242 if (expect_false (!ev_is_active (w)))
1199 return; 2243 return;
1200 2244
2245 {
2246 int active = ((W)w)->active;
1201 checks [w->active - 1] = checks [--checkcnt]; 2247 checks [active - 1] = checks [--checkcnt];
2248 ((W)checks [active - 1])->active = active;
2249 }
2250
1202 ev_stop (EV_A_ (W)w); 2251 ev_stop (EV_A_ (W)w);
1203} 2252}
1204 2253
1205void 2254#if EV_EMBED_ENABLE
1206ev_child_start (EV_P_ struct ev_child *w) 2255void noinline
2256ev_embed_sweep (EV_P_ ev_embed *w)
1207{ 2257{
2258 ev_loop (w->other, EVLOOP_NONBLOCK);
2259}
2260
2261static void
2262embed_io_cb (EV_P_ ev_io *io, int revents)
2263{
2264 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2265
1208 if (ev_is_active (w)) 2266 if (ev_cb (w))
2267 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2268 else
2269 ev_embed_sweep (loop, w);
2270}
2271
2272static void
2273embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2274{
2275 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2276
2277 fd_reify (w->other);
2278}
2279
2280void
2281ev_embed_start (EV_P_ ev_embed *w)
2282{
2283 if (expect_false (ev_is_active (w)))
1209 return; 2284 return;
2285
2286 {
2287 struct ev_loop *loop = w->other;
2288 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2289 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2290 }
2291
2292 ev_set_priority (&w->io, ev_priority (w));
2293 ev_io_start (EV_A_ &w->io);
2294
2295 ev_prepare_init (&w->prepare, embed_prepare_cb);
2296 ev_set_priority (&w->prepare, EV_MINPRI);
2297 ev_prepare_start (EV_A_ &w->prepare);
1210 2298
1211 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
1212 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213} 2300}
1214 2301
1215void 2302void
1216ev_child_stop (EV_P_ struct ev_child *w) 2303ev_embed_stop (EV_P_ ev_embed *w)
1217{ 2304{
1218 ev_clear_pending (EV_A_ (W)w); 2305 clear_pending (EV_A_ (W)w);
1219 if (ev_is_active (w)) 2306 if (expect_false (!ev_is_active (w)))
1220 return; 2307 return;
1221 2308
1222 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2309 ev_io_stop (EV_A_ &w->io);
2310 ev_prepare_stop (EV_A_ &w->prepare);
2311
1223 ev_stop (EV_A_ (W)w); 2312 ev_stop (EV_A_ (W)w);
1224} 2313}
2314#endif
2315
2316#if EV_FORK_ENABLE
2317void
2318ev_fork_start (EV_P_ ev_fork *w)
2319{
2320 if (expect_false (ev_is_active (w)))
2321 return;
2322
2323 ev_start (EV_A_ (W)w, ++forkcnt);
2324 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2325 forks [forkcnt - 1] = w;
2326}
2327
2328void
2329ev_fork_stop (EV_P_ ev_fork *w)
2330{
2331 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w)))
2333 return;
2334
2335 {
2336 int active = ((W)w)->active;
2337 forks [active - 1] = forks [--forkcnt];
2338 ((W)forks [active - 1])->active = active;
2339 }
2340
2341 ev_stop (EV_A_ (W)w);
2342}
2343#endif
1225 2344
1226/*****************************************************************************/ 2345/*****************************************************************************/
1227 2346
1228struct ev_once 2347struct ev_once
1229{ 2348{
1230 struct ev_io io; 2349 ev_io io;
1231 struct ev_timer to; 2350 ev_timer to;
1232 void (*cb)(int revents, void *arg); 2351 void (*cb)(int revents, void *arg);
1233 void *arg; 2352 void *arg;
1234}; 2353};
1235 2354
1236static void 2355static void
… …
1239 void (*cb)(int revents, void *arg) = once->cb; 2358 void (*cb)(int revents, void *arg) = once->cb;
1240 void *arg = once->arg; 2359 void *arg = once->arg;
1241 2360
1242 ev_io_stop (EV_A_ &once->io); 2361 ev_io_stop (EV_A_ &once->io);
1243 ev_timer_stop (EV_A_ &once->to); 2362 ev_timer_stop (EV_A_ &once->to);
1244 free (once); 2363 ev_free (once);
1245 2364
1246 cb (revents, arg); 2365 cb (revents, arg);
1247} 2366}
1248 2367
1249static void 2368static void
1250once_cb_io (EV_P_ struct ev_io *w, int revents) 2369once_cb_io (EV_P_ ev_io *w, int revents)
1251{ 2370{
1252 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2371 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1253} 2372}
1254 2373
1255static void 2374static void
1256once_cb_to (EV_P_ struct ev_timer *w, int revents) 2375once_cb_to (EV_P_ ev_timer *w, int revents)
1257{ 2376{
1258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2377 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1259} 2378}
1260 2379
1261void 2380void
1262ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2381ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263{ 2382{
1264 struct ev_once *once = malloc (sizeof (struct ev_once)); 2383 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265 2384
1266 if (!once) 2385 if (expect_false (!once))
2386 {
1267 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2387 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268 else 2388 return;
1269 { 2389 }
2390
1270 once->cb = cb; 2391 once->cb = cb;
1271 once->arg = arg; 2392 once->arg = arg;
1272 2393
1273 ev_watcher_init (&once->io, once_cb_io); 2394 ev_init (&once->io, once_cb_io);
1274 if (fd >= 0) 2395 if (fd >= 0)
1275 { 2396 {
1276 ev_io_set (&once->io, fd, events); 2397 ev_io_set (&once->io, fd, events);
1277 ev_io_start (EV_A_ &once->io); 2398 ev_io_start (EV_A_ &once->io);
1278 } 2399 }
1279 2400
1280 ev_watcher_init (&once->to, once_cb_to); 2401 ev_init (&once->to, once_cb_to);
1281 if (timeout >= 0.) 2402 if (timeout >= 0.)
1282 { 2403 {
1283 ev_timer_set (&once->to, timeout, 0.); 2404 ev_timer_set (&once->to, timeout, 0.);
1284 ev_timer_start (EV_A_ &once->to); 2405 ev_timer_start (EV_A_ &once->to);
1285 }
1286 }
1287}
1288
1289/*****************************************************************************/
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}
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 { 2406 }
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
1345
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} 2407}
1366 2408
2409#if EV_MULTIPLICITY
2410 #include "ev_wrap.h"
1367#endif 2411#endif
1368 2412
2413#ifdef __cplusplus
2414}
2415#endif
1369 2416
1370
1371

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