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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 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 */ 285/* sig_atomic_t is used to avoid per-thread variables or locking but still */
119static ev_tstamp rt_now; 286/* giving it a reasonably high chance of working on typical architetcures */
120static int method; 287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121 288
122static int have_monotonic; /* runtime */ 289#ifdef _WIN32
123 290# 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 291#endif
156 292
157/*****************************************************************************/ 293/*****************************************************************************/
158 294
159inline ev_tstamp 295static void (*syserr_cb)(const char *msg);
296
297void
298ev_set_syserr_cb (void (*cb)(const char *msg))
299{
300 syserr_cb = cb;
301}
302
303static void noinline
304syserr (const char *msg)
305{
306 if (!msg)
307 msg = "(libev) system error";
308
309 if (syserr_cb)
310 syserr_cb (msg);
311 else
312 {
313 perror (msg);
314 abort ();
315 }
316}
317
318static void *(*alloc)(void *ptr, long size);
319
320void
321ev_set_allocator (void *(*cb)(void *ptr, long size))
322{
323 alloc = cb;
324}
325
326inline_speed void *
327ev_realloc (void *ptr, long size)
328{
329 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
330
331 if (!ptr && size)
332 {
333 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
334 abort ();
335 }
336
337 return ptr;
338}
339
340#define ev_malloc(size) ev_realloc (0, (size))
341#define ev_free(ptr) ev_realloc ((ptr), 0)
342
343/*****************************************************************************/
344
345typedef struct
346{
347 WL head;
348 unsigned char events;
349 unsigned char reify;
350#if EV_SELECT_IS_WINSOCKET
351 SOCKET handle;
352#endif
353} ANFD;
354
355typedef struct
356{
357 W w;
358 int events;
359} ANPENDING;
360
361#if EV_USE_INOTIFY
362typedef struct
363{
364 WL head;
365} ANFS;
366#endif
367
368#if EV_MULTIPLICITY
369
370 struct ev_loop
371 {
372 ev_tstamp ev_rt_now;
373 #define ev_rt_now ((loop)->ev_rt_now)
374 #define VAR(name,decl) decl;
375 #include "ev_vars.h"
376 #undef VAR
377 };
378 #include "ev_wrap.h"
379
380 static struct ev_loop default_loop_struct;
381 struct ev_loop *ev_default_loop_ptr;
382
383#else
384
385 ev_tstamp ev_rt_now;
386 #define VAR(name,decl) static decl;
387 #include "ev_vars.h"
388 #undef VAR
389
390 static int ev_default_loop_ptr;
391
392#endif
393
394/*****************************************************************************/
395
396ev_tstamp
160ev_time (void) 397ev_time (void)
161{ 398{
162#if EV_USE_REALTIME 399#if EV_USE_REALTIME
163 struct timespec ts; 400 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 401 clock_gettime (CLOCK_REALTIME, &ts);
… …
168 gettimeofday (&tv, 0); 405 gettimeofday (&tv, 0);
169 return tv.tv_sec + tv.tv_usec * 1e-6; 406 return tv.tv_sec + tv.tv_usec * 1e-6;
170#endif 407#endif
171} 408}
172 409
173inline ev_tstamp 410ev_tstamp inline_size
174get_clock (void) 411get_clock (void)
175{ 412{
176#if EV_USE_MONOTONIC 413#if EV_USE_MONOTONIC
177 if (expect_true (have_monotonic)) 414 if (expect_true (have_monotonic))
178 { 415 {
… …
183#endif 420#endif
184 421
185 return ev_time (); 422 return ev_time ();
186} 423}
187 424
425#if EV_MULTIPLICITY
188ev_tstamp 426ev_tstamp
189ev_now (EV_P) 427ev_now (EV_P)
190{ 428{
191 return rt_now; 429 return ev_rt_now;
192} 430}
431#endif
193 432
194#define array_roundsize(base,n) ((n) | 4 & ~3) 433void
195 434ev_sleep (ev_tstamp delay)
196#define array_needsize(base,cur,cnt,init) \ 435{
197 if (expect_false ((cnt) > cur)) \ 436 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 } 437 {
438#if EV_USE_NANOSLEEP
439 struct timespec ts;
440
441 ts.tv_sec = (time_t)delay;
442 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443
444 nanosleep (&ts, 0);
445#elif defined(_WIN32)
446 Sleep (delay * 1e3);
447#else
448 struct timeval tv;
449
450 tv.tv_sec = (time_t)delay;
451 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452
453 select (0, 0, 0, 0, &tv);
454#endif
455 }
456}
210 457
211/*****************************************************************************/ 458/*****************************************************************************/
212 459
213typedef struct 460int inline_size
461array_nextsize (int elem, int cur, int cnt)
214{ 462{
215 struct ev_watcher_list *head; 463 int ncur = cur + 1;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219 464
220static ANFD *anfds; 465 do
221static int anfdmax; 466 ncur <<= 1;
467 while (cnt > ncur);
222 468
223static void 469 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
470 if (elem * ncur > 4096)
471 {
472 ncur *= elem;
473 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
474 ncur = ncur - sizeof (void *) * 4;
475 ncur /= elem;
476 }
477
478 return ncur;
479}
480
481static noinline void *
482array_realloc (int elem, void *base, int *cur, int cnt)
483{
484 *cur = array_nextsize (elem, *cur, cnt);
485 return ev_realloc (base, elem * *cur);
486}
487
488#define array_needsize(type,base,cur,cnt,init) \
489 if (expect_false ((cnt) > (cur))) \
490 { \
491 int ocur_ = (cur); \
492 (base) = (type *)array_realloc \
493 (sizeof (type), (base), &(cur), (cnt)); \
494 init ((base) + (ocur_), (cur) - ocur_); \
495 }
496
497#if 0
498#define array_slim(type,stem) \
499 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
500 { \
501 stem ## max = array_roundsize (stem ## cnt >> 1); \
502 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
503 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
504 }
505#endif
506
507#define array_free(stem, idx) \
508 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
509
510/*****************************************************************************/
511
512void noinline
513ev_feed_event (EV_P_ void *w, int revents)
514{
515 W w_ = (W)w;
516 int pri = ABSPRI (w_);
517
518 if (expect_false (w_->pending))
519 pendings [pri][w_->pending - 1].events |= revents;
520 else
521 {
522 w_->pending = ++pendingcnt [pri];
523 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
524 pendings [pri][w_->pending - 1].w = w_;
525 pendings [pri][w_->pending - 1].events = revents;
526 }
527}
528
529void inline_speed
530queue_events (EV_P_ W *events, int eventcnt, int type)
531{
532 int i;
533
534 for (i = 0; i < eventcnt; ++i)
535 ev_feed_event (EV_A_ events [i], type);
536}
537
538/*****************************************************************************/
539
540void inline_size
224anfds_init (ANFD *base, int count) 541anfds_init (ANFD *base, int count)
225{ 542{
226 while (count--) 543 while (count--)
227 { 544 {
228 base->head = 0; 545 base->head = 0;
… …
231 548
232 ++base; 549 ++base;
233 } 550 }
234} 551}
235 552
236typedef struct 553void 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) 554fd_event (EV_P_ int fd, int revents)
271{ 555{
272 ANFD *anfd = anfds + fd; 556 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 557 ev_io *w;
274 558
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 559 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276 { 560 {
277 int ev = w->events & events; 561 int ev = w->events & revents;
278 562
279 if (ev) 563 if (ev)
280 event (EV_A_ (W)w, ev); 564 ev_feed_event (EV_A_ (W)w, ev);
281 } 565 }
282} 566}
283 567
284/*****************************************************************************/ 568void
569ev_feed_fd_event (EV_P_ int fd, int revents)
570{
571 if (fd >= 0 && fd < anfdmax)
572 fd_event (EV_A_ fd, revents);
573}
285 574
286static int *fdchanges; 575void inline_size
287static int fdchangemax, fdchangecnt;
288
289static void
290fd_reify (EV_P) 576fd_reify (EV_P)
291{ 577{
292 int i; 578 int i;
293 579
294 for (i = 0; i < fdchangecnt; ++i) 580 for (i = 0; i < fdchangecnt; ++i)
295 { 581 {
296 int fd = fdchanges [i]; 582 int fd = fdchanges [i];
297 ANFD *anfd = anfds + fd; 583 ANFD *anfd = anfds + fd;
298 struct ev_io *w; 584 ev_io *w;
299 585
300 int events = 0; 586 unsigned char events = 0;
301 587
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 588 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303 events |= w->events; 589 events |= (unsigned char)w->events;
304 590
305 anfd->reify = 0; 591#if EV_SELECT_IS_WINSOCKET
306 592 if (events)
307 if (anfd->events != events)
308 { 593 {
309 method_modify (EV_A_ fd, anfd->events, events); 594 unsigned long argp;
310 anfd->events = events; 595 anfd->handle = _get_osfhandle (fd);
596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
311 } 597 }
598#endif
599
600 {
601 unsigned char o_events = anfd->events;
602 unsigned char o_reify = anfd->reify;
603
604 anfd->reify = 0;
605 anfd->events = events;
606
607 if (o_events != events || o_reify & EV_IOFDSET)
608 backend_modify (EV_A_ fd, o_events, events);
609 }
312 } 610 }
313 611
314 fdchangecnt = 0; 612 fdchangecnt = 0;
315} 613}
316 614
317static void 615void inline_size
318fd_change (EV_P_ int fd) 616fd_change (EV_P_ int fd, int flags)
319{ 617{
320 if (anfds [fd].reify || fdchangecnt < 0) 618 unsigned char reify = anfds [fd].reify;
321 return;
322
323 anfds [fd].reify = 1; 619 anfds [fd].reify |= flags;
324 620
621 if (expect_true (!reify))
622 {
325 ++fdchangecnt; 623 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 624 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327 fdchanges [fdchangecnt - 1] = fd; 625 fdchanges [fdchangecnt - 1] = fd;
626 }
328} 627}
329 628
330static void 629void inline_speed
331fd_kill (EV_P_ int fd) 630fd_kill (EV_P_ int fd)
332{ 631{
333 struct ev_io *w; 632 ev_io *w;
334 633
335 while ((w = (struct ev_io *)anfds [fd].head)) 634 while ((w = (ev_io *)anfds [fd].head))
336 { 635 {
337 ev_io_stop (EV_A_ w); 636 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 637 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 638 }
639}
640
641int inline_size
642fd_valid (int fd)
643{
644#ifdef _WIN32
645 return _get_osfhandle (fd) != -1;
646#else
647 return fcntl (fd, F_GETFD) != -1;
648#endif
340} 649}
341 650
342/* called on EBADF to verify fds */ 651/* called on EBADF to verify fds */
343static void 652static void noinline
344fd_ebadf (EV_P) 653fd_ebadf (EV_P)
345{ 654{
346 int fd; 655 int fd;
347 656
348 for (fd = 0; fd < anfdmax; ++fd) 657 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 658 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 659 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 660 fd_kill (EV_A_ fd);
352} 661}
353 662
354/* called on ENOMEM in select/poll to kill some fds and retry */ 663/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 664static void noinline
356fd_enomem (EV_P) 665fd_enomem (EV_P)
357{ 666{
358 int fd = anfdmax; 667 int fd;
359 668
360 while (fd--) 669 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 670 if (anfds [fd].events)
362 { 671 {
363 close (fd);
364 fd_kill (EV_A_ fd); 672 fd_kill (EV_A_ fd);
365 return; 673 return;
366 } 674 }
367} 675}
368 676
677/* usually called after fork if backend needs to re-arm all fds from scratch */
678static void noinline
679fd_rearm_all (EV_P)
680{
681 int fd;
682
683 for (fd = 0; fd < anfdmax; ++fd)
684 if (anfds [fd].events)
685 {
686 anfds [fd].events = 0;
687 fd_change (EV_A_ fd, EV_IOFDSET | 1);
688 }
689}
690
369/*****************************************************************************/ 691/*****************************************************************************/
370 692
371static struct ev_timer **timers; 693void inline_speed
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void
378upheap (WT *timers, int k) 694upheap (WT *heap, int k)
379{ 695{
380 WT w = timers [k]; 696 WT w = heap [k];
381 697
382 while (k && timers [k >> 1]->at > w->at) 698 while (k)
383 {
384 timers [k] = timers [k >> 1];
385 timers [k]->active = k + 1;
386 k >>= 1;
387 } 699 {
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; 700 int p = (k - 1) >> 1;
402 701
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 702 if (heap [p]->at <= w->at)
404 ++j;
405
406 if (w->at <= timers [j]->at)
407 break; 703 break;
408 704
409 timers [k] = timers [j]; 705 heap [k] = heap [p];
410 timers [k]->active = k + 1; 706 ((W)heap [k])->active = k + 1;
411 k = j; 707 k = p;
708 }
709
710 heap [k] = w;
711 ((W)heap [k])->active = k + 1;
712}
713
714void inline_speed
715downheap (WT *heap, int N, int k)
716{
717 WT w = heap [k];
718
719 for (;;)
412 } 720 {
721 int c = (k << 1) + 1;
413 722
723 if (c >= N)
724 break;
725
726 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
727 ? 1 : 0;
728
729 if (w->at <= heap [c]->at)
730 break;
731
732 heap [k] = heap [c];
733 ((W)heap [k])->active = k + 1;
734
735 k = c;
736 }
737
414 timers [k] = w; 738 heap [k] = w;
415 timers [k]->active = k + 1; 739 ((W)heap [k])->active = k + 1;
740}
741
742void inline_size
743adjustheap (WT *heap, int N, int k)
744{
745 upheap (heap, k);
746 downheap (heap, N, k);
416} 747}
417 748
418/*****************************************************************************/ 749/*****************************************************************************/
419 750
420typedef struct 751typedef struct
421{ 752{
422 struct ev_watcher_list *head; 753 WL head;
423 sig_atomic_t volatile gotsig; 754 sig_atomic_t volatile gotsig;
424} ANSIG; 755} ANSIG;
425 756
426static ANSIG *signals; 757static ANSIG *signals;
427static int signalmax; 758static int signalmax;
428 759
429static int sigpipe [2]; 760static int sigpipe [2];
430static sig_atomic_t volatile gotsig; 761static sig_atomic_t volatile gotsig;
431static struct ev_io sigev; 762static ev_io sigev;
432 763
433static void 764void inline_size
434signals_init (ANSIG *base, int count) 765signals_init (ANSIG *base, int count)
435{ 766{
436 while (count--) 767 while (count--)
437 { 768 {
438 base->head = 0; 769 base->head = 0;
… …
443} 774}
444 775
445static void 776static void
446sighandler (int signum) 777sighandler (int signum)
447{ 778{
779#if _WIN32
780 signal (signum, sighandler);
781#endif
782
448 signals [signum - 1].gotsig = 1; 783 signals [signum - 1].gotsig = 1;
449 784
450 if (!gotsig) 785 if (!gotsig)
451 { 786 {
452 int old_errno = errno; 787 int old_errno = errno;
… …
454 write (sigpipe [1], &signum, 1); 789 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 790 errno = old_errno;
456 } 791 }
457} 792}
458 793
794void noinline
795ev_feed_signal_event (EV_P_ int signum)
796{
797 WL w;
798
799#if EV_MULTIPLICITY
800 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
801#endif
802
803 --signum;
804
805 if (signum < 0 || signum >= signalmax)
806 return;
807
808 signals [signum].gotsig = 0;
809
810 for (w = signals [signum].head; w; w = w->next)
811 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
812}
813
459static void 814static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 815sigcb (EV_P_ ev_io *iow, int revents)
461{ 816{
462 struct ev_watcher_list *w;
463 int signum; 817 int signum;
464 818
465 read (sigpipe [0], &revents, 1); 819 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 820 gotsig = 0;
467 821
468 for (signum = signalmax; signum--; ) 822 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 823 if (signals [signum].gotsig)
824 ev_feed_signal_event (EV_A_ signum + 1);
825}
826
827void inline_speed
828fd_intern (int fd)
829{
830#ifdef _WIN32
831 int arg = 1;
832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
833#else
834 fcntl (fd, F_SETFD, FD_CLOEXEC);
835 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif
837}
838
839static void noinline
840siginit (EV_P)
841{
842 fd_intern (sigpipe [0]);
843 fd_intern (sigpipe [1]);
844
845 ev_io_set (&sigev, sigpipe [0], EV_READ);
846 ev_io_start (EV_A_ &sigev);
847 ev_unref (EV_A); /* child watcher should not keep loop alive */
848}
849
850/*****************************************************************************/
851
852static WL childs [EV_PID_HASHSIZE];
853
854#ifndef _WIN32
855
856static ev_signal childev;
857
858void inline_speed
859child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
860{
861 ev_child *w;
862
863 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
864 if (w->pid == pid || !w->pid)
470 { 865 {
471 signals [signum].gotsig = 0; 866 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472 867 w->rpid = pid;
473 for (w = signals [signum].head; w; w = w->next) 868 w->rstatus = status;
474 event (EV_A_ (W)w, EV_SIGNAL); 869 ev_feed_event (EV_A_ (W)w, EV_CHILD);
475 } 870 }
476} 871}
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}
493
494/*****************************************************************************/
495
496static struct ev_idle **idles;
497static int idlemax, idlecnt;
498
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506
507static struct ev_child *childs [PID_HASHSIZE];
508static struct ev_signal childev;
509
510#ifndef WIN32
511 872
512#ifndef WCONTINUED 873#ifndef WCONTINUED
513# define WCONTINUED 0 874# define WCONTINUED 0
514#endif 875#endif
515 876
516static void 877static void
517child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
518{
519 struct ev_child *w;
520
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid)
523 {
524 w->priority = sw->priority; /* need to do it *now* */
525 w->rpid = pid;
526 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD);
528 }
529}
530
531static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 878childcb (EV_P_ ev_signal *sw, int revents)
533{ 879{
534 int pid, status; 880 int pid, status;
535 881
882 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 883 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 884 if (!WCONTINUED
885 || errno != EINVAL
886 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887 return;
888
538 /* make sure we are called again until all childs have been reaped */ 889 /* make sure we are called again until all childs have been reaped */
890 /* we need to do it this way so that the callback gets called before we continue */
539 event (EV_A_ (W)sw, EV_SIGNAL); 891 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 892
541 child_reap (EV_A_ sw, pid, pid, status); 893 child_reap (EV_A_ sw, pid, pid, status);
894 if (EV_PID_HASHSIZE > 1)
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 895 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
543 }
544} 896}
545 897
546#endif 898#endif
547 899
548/*****************************************************************************/ 900/*****************************************************************************/
549 901
902#if EV_USE_PORT
903# include "ev_port.c"
904#endif
550#if EV_USE_KQUEUE 905#if EV_USE_KQUEUE
551# include "ev_kqueue.c" 906# include "ev_kqueue.c"
552#endif 907#endif
553#if EV_USE_EPOLL 908#if EV_USE_EPOLL
554# include "ev_epoll.c" 909# include "ev_epoll.c"
555#endif 910#endif
556#if EV_USEV_POLL 911#if EV_USE_POLL
557# include "ev_poll.c" 912# include "ev_poll.c"
558#endif 913#endif
559#if EV_USE_SELECT 914#if EV_USE_SELECT
560# include "ev_select.c" 915# include "ev_select.c"
561#endif 916#endif
… …
571{ 926{
572 return EV_VERSION_MINOR; 927 return EV_VERSION_MINOR;
573} 928}
574 929
575/* return true if we are running with elevated privileges and should ignore env variables */ 930/* return true if we are running with elevated privileges and should ignore env variables */
576static int 931int inline_size
577enable_secure (void) 932enable_secure (void)
578{ 933{
579#ifdef WIN32 934#ifdef _WIN32
580 return 0; 935 return 0;
581#else 936#else
582 return getuid () != geteuid () 937 return getuid () != geteuid ()
583 || getgid () != getegid (); 938 || getgid () != getegid ();
584#endif 939#endif
585} 940}
586 941
587int 942unsigned int
588ev_method (EV_P) 943ev_supported_backends (void)
589{ 944{
590 return method; 945 unsigned int flags = 0;
591}
592 946
593int 947 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594ev_init (EV_P_ int methods) 948 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
949 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
950 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
951 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
952
953 return flags;
954}
955
956unsigned int
957ev_recommended_backends (void)
595{ 958{
596 if (!method) 959 unsigned int flags = ev_supported_backends ();
960
961#ifndef __NetBSD__
962 /* kqueue is borked on everything but netbsd apparently */
963 /* it usually doesn't work correctly on anything but sockets and pipes */
964 flags &= ~EVBACKEND_KQUEUE;
965#endif
966#ifdef __APPLE__
967 // flags &= ~EVBACKEND_KQUEUE; for documentation
968 flags &= ~EVBACKEND_POLL;
969#endif
970
971 return flags;
972}
973
974unsigned int
975ev_embeddable_backends (void)
976{
977 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
978
979 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
980 /* please fix it and tell me how to detect the fix */
981 flags &= ~EVBACKEND_EPOLL;
982
983 return flags;
984}
985
986unsigned int
987ev_backend (EV_P)
988{
989 return backend;
990}
991
992unsigned int
993ev_loop_count (EV_P)
994{
995 return loop_count;
996}
997
998void
999ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1000{
1001 io_blocktime = interval;
1002}
1003
1004void
1005ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1006{
1007 timeout_blocktime = interval;
1008}
1009
1010static void noinline
1011loop_init (EV_P_ unsigned int flags)
1012{
1013 if (!backend)
597 { 1014 {
598#if EV_USE_MONOTONIC 1015#if EV_USE_MONOTONIC
599 { 1016 {
600 struct timespec ts; 1017 struct timespec ts;
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1018 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 1019 have_monotonic = 1;
603 } 1020 }
604#endif 1021#endif
605 1022
606 rt_now = ev_time (); 1023 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 1024 mn_now = get_clock ();
608 now_floor = mn_now; 1025 now_floor = mn_now;
609 diff = rt_now - mn_now; 1026 rtmn_diff = ev_rt_now - mn_now;
610 1027
611 if (pipe (sigpipe)) 1028 io_blocktime = 0.;
612 return 0; 1029 timeout_blocktime = 0.;
613 1030
614 if (methods == EVMETHOD_AUTO) 1031 /* pid check not overridable via env */
615 if (!enable_secure () && getenv ("LIBmethodS")) 1032#ifndef _WIN32
616 methods = atoi (getenv ("LIBmethodS")); 1033 if (flags & EVFLAG_FORKCHECK)
617 else 1034 curpid = getpid ();
618 methods = EVMETHOD_ANY; 1035#endif
619 1036
620 method = 0; 1037 if (!(flags & EVFLAG_NOENV)
1038 && !enable_secure ()
1039 && getenv ("LIBEV_FLAGS"))
1040 flags = atoi (getenv ("LIBEV_FLAGS"));
1041
1042 if (!(flags & 0x0000ffffUL))
1043 flags |= ev_recommended_backends ();
1044
1045 backend = 0;
1046 backend_fd = -1;
1047#if EV_USE_INOTIFY
1048 fs_fd = -2;
1049#endif
1050
1051#if EV_USE_PORT
1052 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1053#endif
621#if EV_USE_KQUEUE 1054#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1055 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623#endif 1056#endif
624#if EV_USE_EPOLL 1057#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1058 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626#endif 1059#endif
627#if EV_USEV_POLL 1060#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1061 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629#endif 1062#endif
630#if EV_USE_SELECT 1063#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1064 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632#endif 1065#endif
633 1066
634 if (method) 1067 ev_init (&sigev, sigcb);
1068 ev_set_priority (&sigev, EV_MAXPRI);
1069 }
1070}
1071
1072static void noinline
1073loop_destroy (EV_P)
1074{
1075 int i;
1076
1077#if EV_USE_INOTIFY
1078 if (fs_fd >= 0)
1079 close (fs_fd);
1080#endif
1081
1082 if (backend_fd >= 0)
1083 close (backend_fd);
1084
1085#if EV_USE_PORT
1086 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1087#endif
1088#if EV_USE_KQUEUE
1089 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1090#endif
1091#if EV_USE_EPOLL
1092 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1093#endif
1094#if EV_USE_POLL
1095 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1096#endif
1097#if EV_USE_SELECT
1098 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1099#endif
1100
1101 for (i = NUMPRI; i--; )
1102 {
1103 array_free (pending, [i]);
1104#if EV_IDLE_ENABLE
1105 array_free (idle, [i]);
1106#endif
1107 }
1108
1109 ev_free (anfds); anfdmax = 0;
1110
1111 /* have to use the microsoft-never-gets-it-right macro */
1112 array_free (fdchange, EMPTY);
1113 array_free (timer, EMPTY);
1114#if EV_PERIODIC_ENABLE
1115 array_free (periodic, EMPTY);
1116#endif
1117#if EV_FORK_ENABLE
1118 array_free (fork, EMPTY);
1119#endif
1120 array_free (prepare, EMPTY);
1121 array_free (check, EMPTY);
1122
1123 backend = 0;
1124}
1125
1126void inline_size infy_fork (EV_P);
1127
1128void inline_size
1129loop_fork (EV_P)
1130{
1131#if EV_USE_PORT
1132 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1133#endif
1134#if EV_USE_KQUEUE
1135 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1136#endif
1137#if EV_USE_EPOLL
1138 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1139#endif
1140#if EV_USE_INOTIFY
1141 infy_fork (EV_A);
1142#endif
1143
1144 if (ev_is_active (&sigev))
1145 {
1146 /* default loop */
1147
1148 ev_ref (EV_A);
1149 ev_io_stop (EV_A_ &sigev);
1150 close (sigpipe [0]);
1151 close (sigpipe [1]);
1152
1153 while (pipe (sigpipe))
1154 syserr ("(libev) error creating pipe");
1155
1156 siginit (EV_A);
1157 }
1158
1159 postfork = 0;
1160}
1161
1162#if EV_MULTIPLICITY
1163struct ev_loop *
1164ev_loop_new (unsigned int flags)
1165{
1166 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1167
1168 memset (loop, 0, sizeof (struct ev_loop));
1169
1170 loop_init (EV_A_ flags);
1171
1172 if (ev_backend (EV_A))
1173 return loop;
1174
1175 return 0;
1176}
1177
1178void
1179ev_loop_destroy (EV_P)
1180{
1181 loop_destroy (EV_A);
1182 ev_free (loop);
1183}
1184
1185void
1186ev_loop_fork (EV_P)
1187{
1188 postfork = 1;
1189}
1190
1191#endif
1192
1193#if EV_MULTIPLICITY
1194struct ev_loop *
1195ev_default_loop_init (unsigned int flags)
1196#else
1197int
1198ev_default_loop (unsigned int flags)
1199#endif
1200{
1201 if (sigpipe [0] == sigpipe [1])
1202 if (pipe (sigpipe))
1203 return 0;
1204
1205 if (!ev_default_loop_ptr)
1206 {
1207#if EV_MULTIPLICITY
1208 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1209#else
1210 ev_default_loop_ptr = 1;
1211#endif
1212
1213 loop_init (EV_A_ flags);
1214
1215 if (ev_backend (EV_A))
635 { 1216 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 1217 siginit (EV_A);
639 1218
640#ifndef WIN32 1219#ifndef _WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 1220 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 1221 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 1222 ev_signal_start (EV_A_ &childev);
1223 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 1224#endif
645 } 1225 }
1226 else
1227 ev_default_loop_ptr = 0;
646 } 1228 }
647 1229
648 return method; 1230 return ev_default_loop_ptr;
1231}
1232
1233void
1234ev_default_destroy (void)
1235{
1236#if EV_MULTIPLICITY
1237 struct ev_loop *loop = ev_default_loop_ptr;
1238#endif
1239
1240#ifndef _WIN32
1241 ev_ref (EV_A); /* child watcher */
1242 ev_signal_stop (EV_A_ &childev);
1243#endif
1244
1245 ev_ref (EV_A); /* signal watcher */
1246 ev_io_stop (EV_A_ &sigev);
1247
1248 close (sigpipe [0]); sigpipe [0] = 0;
1249 close (sigpipe [1]); sigpipe [1] = 0;
1250
1251 loop_destroy (EV_A);
1252}
1253
1254void
1255ev_default_fork (void)
1256{
1257#if EV_MULTIPLICITY
1258 struct ev_loop *loop = ev_default_loop_ptr;
1259#endif
1260
1261 if (backend)
1262 postfork = 1;
649} 1263}
650 1264
651/*****************************************************************************/ 1265/*****************************************************************************/
652 1266
653void 1267void
654ev_fork_prepare (void) 1268ev_invoke (EV_P_ void *w, int revents)
655{ 1269{
656 /* nop */ 1270 EV_CB_INVOKE ((W)w, revents);
657} 1271}
658 1272
659void 1273void inline_speed
660ev_fork_parent (void)
661{
662 /* nop */
663}
664
665void
666ev_fork_child (void)
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif
672
673 ev_io_stop (&sigev);
674 close (sigpipe [0]);
675 close (sigpipe [1]);
676 pipe (sigpipe);
677 siginit ();
678}
679
680/*****************************************************************************/
681
682static void
683call_pending (EV_P) 1274call_pending (EV_P)
684{ 1275{
685 int pri; 1276 int pri;
686 1277
687 for (pri = NUMPRI; pri--; ) 1278 for (pri = NUMPRI; pri--; )
688 while (pendingcnt [pri]) 1279 while (pendingcnt [pri])
689 { 1280 {
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1281 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 1282
692 if (p->w) 1283 if (expect_true (p->w))
693 { 1284 {
1285 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1286
694 p->w->pending = 0; 1287 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 1288 EV_CB_INVOKE (p->w, p->events);
696 } 1289 }
697 } 1290 }
698} 1291}
699 1292
700static void 1293void inline_size
701timers_reify (EV_P) 1294timers_reify (EV_P)
702{ 1295{
703 while (timercnt && timers [0]->at <= mn_now) 1296 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 1297 {
705 struct ev_timer *w = timers [0]; 1298 ev_timer *w = (ev_timer *)timers [0];
1299
1300 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
706 1301
707 /* first reschedule or stop timer */ 1302 /* first reschedule or stop timer */
708 if (w->repeat) 1303 if (w->repeat)
709 { 1304 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1305 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1306
711 w->at = mn_now + w->repeat; 1307 ((WT)w)->at += w->repeat;
1308 if (((WT)w)->at < mn_now)
1309 ((WT)w)->at = mn_now;
1310
712 downheap ((WT *)timers, timercnt, 0); 1311 downheap (timers, timercnt, 0);
713 } 1312 }
714 else 1313 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1314 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1315
717 event ((W)w, EV_TIMEOUT); 1316 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1317 }
719} 1318}
720 1319
721static void 1320#if EV_PERIODIC_ENABLE
1321void inline_size
722periodics_reify (EV_P) 1322periodics_reify (EV_P)
723{ 1323{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1324 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1325 {
726 struct ev_periodic *w = periodics [0]; 1326 ev_periodic *w = (ev_periodic *)periodics [0];
1327
1328 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
727 1329
728 /* first reschedule or stop timer */ 1330 /* first reschedule or stop timer */
729 if (w->interval) 1331 if (w->reschedule_cb)
730 { 1332 {
1333 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1334 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1335 downheap (periodics, periodiccnt, 0);
1336 }
1337 else if (w->interval)
1338 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1339 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1340 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1341 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0); 1342 downheap (periodics, periodiccnt, 0);
734 } 1343 }
735 else 1344 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1345 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1346
738 event (EV_A_ (W)w, EV_PERIODIC); 1347 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1348 }
740} 1349}
741 1350
742static void 1351static void noinline
743periodics_reschedule (EV_P_ ev_tstamp diff) 1352periodics_reschedule (EV_P)
744{ 1353{
745 int i; 1354 int i;
746 1355
747 /* adjust periodics after time jump */ 1356 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1357 for (i = 0; i < periodiccnt; ++i)
749 { 1358 {
750 struct ev_periodic *w = periodics [i]; 1359 ev_periodic *w = (ev_periodic *)periodics [i];
751 1360
1361 if (w->reschedule_cb)
1362 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 if (w->interval) 1363 else if (w->interval)
1364 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1365 }
1366
1367 /* now rebuild the heap */
1368 for (i = periodiccnt >> 1; i--; )
1369 downheap (periodics, periodiccnt, i);
1370}
1371#endif
1372
1373#if EV_IDLE_ENABLE
1374void inline_size
1375idle_reify (EV_P)
1376{
1377 if (expect_false (idleall))
1378 {
1379 int pri;
1380
1381 for (pri = NUMPRI; pri--; )
753 { 1382 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1383 if (pendingcnt [pri])
1384 break;
755 1385
756 if (fabs (diff) >= 1e-4) 1386 if (idlecnt [pri])
757 { 1387 {
758 ev_periodic_stop (EV_A_ w); 1388 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
759 ev_periodic_start (EV_A_ w); 1389 break;
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 } 1390 }
763 } 1391 }
764 } 1392 }
765} 1393}
1394#endif
766 1395
767inline int 1396void inline_speed
768time_update_monotonic (EV_P) 1397time_update (EV_P_ ev_tstamp max_block)
769{
770 mn_now = get_clock ();
771
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 {
774 rt_now = mn_now + diff;
775 return 0;
776 }
777 else
778 {
779 now_floor = mn_now;
780 rt_now = ev_time ();
781 return 1;
782 }
783}
784
785static void
786time_update (EV_P)
787{ 1398{
788 int i; 1399 int i;
789 1400
790#if EV_USE_MONOTONIC 1401#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1402 if (expect_true (have_monotonic))
792 { 1403 {
793 if (time_update_monotonic (EV_A)) 1404 ev_tstamp odiff = rtmn_diff;
1405
1406 mn_now = get_clock ();
1407
1408 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1409 /* interpolate in the meantime */
1410 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
794 { 1411 {
795 ev_tstamp odiff = diff; 1412 ev_rt_now = rtmn_diff + mn_now;
796 1413 return;
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 {
799 diff = rt_now - mn_now;
800
801 if (fabs (odiff - diff) < MIN_TIMEJUMP)
802 return; /* all is well */
803
804 rt_now = ev_time ();
805 mn_now = get_clock ();
806 now_floor = mn_now;
807 }
808
809 periodics_reschedule (EV_A_ diff - odiff);
810 /* no timer adjustment, as the monotonic clock doesn't jump */
811 } 1414 }
1415
1416 now_floor = mn_now;
1417 ev_rt_now = ev_time ();
1418
1419 /* loop a few times, before making important decisions.
1420 * on the choice of "4": one iteration isn't enough,
1421 * in case we get preempted during the calls to
1422 * ev_time and get_clock. a second call is almost guaranteed
1423 * to succeed in that case, though. and looping a few more times
1424 * doesn't hurt either as we only do this on time-jumps or
1425 * in the unlikely event of having been preempted here.
1426 */
1427 for (i = 4; --i; )
1428 {
1429 rtmn_diff = ev_rt_now - mn_now;
1430
1431 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1432 return; /* all is well */
1433
1434 ev_rt_now = ev_time ();
1435 mn_now = get_clock ();
1436 now_floor = mn_now;
1437 }
1438
1439# if EV_PERIODIC_ENABLE
1440 periodics_reschedule (EV_A);
1441# endif
1442 /* no timer adjustment, as the monotonic clock doesn't jump */
1443 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
812 } 1444 }
813 else 1445 else
814#endif 1446#endif
815 { 1447 {
816 rt_now = ev_time (); 1448 ev_rt_now = ev_time ();
817 1449
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1450 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
819 { 1451 {
1452#if EV_PERIODIC_ENABLE
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1453 periodics_reschedule (EV_A);
821 1454#endif
822 /* adjust timers. this is easy, as the offset is the same for all */ 1455 /* adjust timers. this is easy, as the offset is the same for all of them */
823 for (i = 0; i < timercnt; ++i) 1456 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1457 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1458 }
826 1459
827 mn_now = rt_now; 1460 mn_now = ev_rt_now;
828 } 1461 }
829} 1462}
830 1463
831void 1464void
832ev_ref (EV_P) 1465ev_ref (EV_P)
… …
843static int loop_done; 1476static int loop_done;
844 1477
845void 1478void
846ev_loop (EV_P_ int flags) 1479ev_loop (EV_P_ int flags)
847{ 1480{
848 double block;
849 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1481 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1482 ? EVUNLOOP_ONE
1483 : EVUNLOOP_CANCEL;
1484
1485 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
850 1486
851 do 1487 do
852 { 1488 {
1489#ifndef _WIN32
1490 if (expect_false (curpid)) /* penalise the forking check even more */
1491 if (expect_false (getpid () != curpid))
1492 {
1493 curpid = getpid ();
1494 postfork = 1;
1495 }
1496#endif
1497
1498#if EV_FORK_ENABLE
1499 /* we might have forked, so queue fork handlers */
1500 if (expect_false (postfork))
1501 if (forkcnt)
1502 {
1503 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1504 call_pending (EV_A);
1505 }
1506#endif
1507
853 /* queue check watchers (and execute them) */ 1508 /* queue prepare watchers (and execute them) */
854 if (expect_false (preparecnt)) 1509 if (expect_false (preparecnt))
855 { 1510 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1511 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1512 call_pending (EV_A);
858 } 1513 }
859 1514
1515 if (expect_false (!activecnt))
1516 break;
1517
1518 /* we might have forked, so reify kernel state if necessary */
1519 if (expect_false (postfork))
1520 loop_fork (EV_A);
1521
860 /* update fd-related kernel structures */ 1522 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1523 fd_reify (EV_A);
862 1524
863 /* calculate blocking time */ 1525 /* calculate blocking time */
1526 {
1527 ev_tstamp waittime = 0.;
1528 ev_tstamp sleeptime = 0.;
864 1529
865 /* we only need this for !monotonic clockor timers, but as we basically 1530 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
866 always have timers, we just calculate it always */
867#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A);
870 else
871#endif
872 { 1531 {
873 rt_now = ev_time (); 1532 /* update time to cancel out callback processing overhead */
874 mn_now = rt_now; 1533 time_update (EV_A_ 1e100);
875 }
876 1534
877 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.;
879 else
880 {
881 block = MAX_BLOCKTIME; 1535 waittime = MAX_BLOCKTIME;
882 1536
883 if (timercnt) 1537 if (timercnt)
884 { 1538 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1539 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
886 if (block > to) block = to; 1540 if (waittime > to) waittime = to;
887 } 1541 }
888 1542
1543#if EV_PERIODIC_ENABLE
889 if (periodiccnt) 1544 if (periodiccnt)
890 { 1545 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1546 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
892 if (block > to) block = to; 1547 if (waittime > to) waittime = to;
893 } 1548 }
1549#endif
894 1550
895 if (block < 0.) block = 0.; 1551 if (expect_false (waittime < timeout_blocktime))
1552 waittime = timeout_blocktime;
1553
1554 sleeptime = waittime - backend_fudge;
1555
1556 if (expect_true (sleeptime > io_blocktime))
1557 sleeptime = io_blocktime;
1558
1559 if (sleeptime)
1560 {
1561 ev_sleep (sleeptime);
1562 waittime -= sleeptime;
1563 }
896 } 1564 }
897 1565
898 method_poll (EV_A_ block); 1566 ++loop_count;
1567 backend_poll (EV_A_ waittime);
899 1568
900 /* update rt_now, do magic */ 1569 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1570 time_update (EV_A_ waittime + sleeptime);
1571 }
902 1572
903 /* queue pending timers and reschedule them */ 1573 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1574 timers_reify (EV_A); /* relative timers called last */
1575#if EV_PERIODIC_ENABLE
905 periodics_reify (EV_A); /* absolute timers called first */ 1576 periodics_reify (EV_A); /* absolute timers called first */
1577#endif
906 1578
1579#if EV_IDLE_ENABLE
907 /* queue idle watchers unless io or timers are pending */ 1580 /* queue idle watchers unless other events are pending */
908 if (!pendingcnt) 1581 idle_reify (EV_A);
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1582#endif
910 1583
911 /* queue check watchers, to be executed first */ 1584 /* queue check watchers, to be executed first */
912 if (checkcnt) 1585 if (expect_false (checkcnt))
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1586 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1587
915 call_pending (EV_A); 1588 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D 1589
917 } 1590 }
918 while (activecnt && !loop_done); 1591 while (expect_true (activecnt && !loop_done));
919 1592
920 if (loop_done != 2) 1593 if (loop_done == EVUNLOOP_ONE)
921 loop_done = 0; 1594 loop_done = EVUNLOOP_CANCEL;
922} 1595}
923 1596
924void 1597void
925ev_unloop (EV_P_ int how) 1598ev_unloop (EV_P_ int how)
926{ 1599{
927 loop_done = how; 1600 loop_done = how;
928} 1601}
929 1602
930/*****************************************************************************/ 1603/*****************************************************************************/
931 1604
932inline void 1605void inline_size
933wlist_add (WL *head, WL elem) 1606wlist_add (WL *head, WL elem)
934{ 1607{
935 elem->next = *head; 1608 elem->next = *head;
936 *head = elem; 1609 *head = elem;
937} 1610}
938 1611
939inline void 1612void inline_size
940wlist_del (WL *head, WL elem) 1613wlist_del (WL *head, WL elem)
941{ 1614{
942 while (*head) 1615 while (*head)
943 { 1616 {
944 if (*head == elem) 1617 if (*head == elem)
… …
949 1622
950 head = &(*head)->next; 1623 head = &(*head)->next;
951 } 1624 }
952} 1625}
953 1626
954inline void 1627void inline_speed
955ev_clear_pending (EV_P_ W w) 1628clear_pending (EV_P_ W w)
956{ 1629{
957 if (w->pending) 1630 if (w->pending)
958 { 1631 {
959 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1632 pendings [ABSPRI (w)][w->pending - 1].w = 0;
960 w->pending = 0; 1633 w->pending = 0;
961 } 1634 }
962} 1635}
963 1636
964inline void 1637int
1638ev_clear_pending (EV_P_ void *w)
1639{
1640 W w_ = (W)w;
1641 int pending = w_->pending;
1642
1643 if (expect_true (pending))
1644 {
1645 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1646 w_->pending = 0;
1647 p->w = 0;
1648 return p->events;
1649 }
1650 else
1651 return 0;
1652}
1653
1654void inline_size
1655pri_adjust (EV_P_ W w)
1656{
1657 int pri = w->priority;
1658 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1659 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1660 w->priority = pri;
1661}
1662
1663void inline_speed
965ev_start (EV_P_ W w, int active) 1664ev_start (EV_P_ W w, int active)
966{ 1665{
967 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1666 pri_adjust (EV_A_ w);
968 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
969
970 w->active = active; 1667 w->active = active;
971 ev_ref (EV_A); 1668 ev_ref (EV_A);
972} 1669}
973 1670
974inline void 1671void inline_size
975ev_stop (EV_P_ W w) 1672ev_stop (EV_P_ W w)
976{ 1673{
977 ev_unref (EV_A); 1674 ev_unref (EV_A);
978 w->active = 0; 1675 w->active = 0;
979} 1676}
980 1677
981/*****************************************************************************/ 1678/*****************************************************************************/
982 1679
983void 1680void noinline
984ev_io_start (EV_P_ struct ev_io *w) 1681ev_io_start (EV_P_ ev_io *w)
985{ 1682{
986 int fd = w->fd; 1683 int fd = w->fd;
987 1684
988 if (ev_is_active (w)) 1685 if (expect_false (ev_is_active (w)))
989 return; 1686 return;
990 1687
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1688 assert (("ev_io_start called with negative fd", fd >= 0));
992 1689
993 ev_start (EV_A_ (W)w, 1); 1690 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1691 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1692 wlist_add (&anfds[fd].head, (WL)w);
996 1693
997 fd_change (EV_A_ fd); 1694 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1695 w->events &= ~EV_IOFDSET;
998} 1696}
999 1697
1000void 1698void noinline
1001ev_io_stop (EV_P_ struct ev_io *w) 1699ev_io_stop (EV_P_ ev_io *w)
1002{ 1700{
1003 ev_clear_pending (EV_A_ (W)w); 1701 clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1702 if (expect_false (!ev_is_active (w)))
1005 return; 1703 return;
1006 1704
1705 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1706
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1707 wlist_del (&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1708 ev_stop (EV_A_ (W)w);
1009 1709
1010 fd_change (EV_A_ w->fd); 1710 fd_change (EV_A_ w->fd, 1);
1011} 1711}
1012 1712
1013void 1713void noinline
1014ev_timer_start (EV_P_ struct ev_timer *w) 1714ev_timer_start (EV_P_ ev_timer *w)
1015{ 1715{
1016 if (ev_is_active (w)) 1716 if (expect_false (ev_is_active (w)))
1017 return; 1717 return;
1018 1718
1019 w->at += mn_now; 1719 ((WT)w)->at += mn_now;
1020 1720
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1721 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1722
1023 ev_start (EV_A_ (W)w, ++timercnt); 1723 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1724 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1025 timers [timercnt - 1] = w; 1725 timers [timercnt - 1] = (WT)w;
1026 upheap ((WT *)timers, timercnt - 1); 1726 upheap (timers, timercnt - 1);
1027}
1028 1727
1029void 1728 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1729}
1730
1731void noinline
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1732ev_timer_stop (EV_P_ ev_timer *w)
1031{ 1733{
1032 ev_clear_pending (EV_A_ (W)w); 1734 clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1735 if (expect_false (!ev_is_active (w)))
1034 return; 1736 return;
1035 1737
1036 if (w->active < timercnt--) 1738 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1739
1740 {
1741 int active = ((W)w)->active;
1742
1743 if (expect_true (--active < --timercnt))
1037 { 1744 {
1038 timers [w->active - 1] = timers [timercnt]; 1745 timers [active] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1746 adjustheap (timers, timercnt, active);
1040 } 1747 }
1748 }
1041 1749
1042 w->at = w->repeat; 1750 ((WT)w)->at -= mn_now;
1043 1751
1044 ev_stop (EV_A_ (W)w); 1752 ev_stop (EV_A_ (W)w);
1045} 1753}
1046 1754
1047void 1755void noinline
1048ev_timer_again (EV_P_ struct ev_timer *w) 1756ev_timer_again (EV_P_ ev_timer *w)
1049{ 1757{
1050 if (ev_is_active (w)) 1758 if (ev_is_active (w))
1051 { 1759 {
1052 if (w->repeat) 1760 if (w->repeat)
1053 { 1761 {
1054 w->at = mn_now + w->repeat; 1762 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1763 adjustheap (timers, timercnt, ((W)w)->active - 1);
1056 } 1764 }
1057 else 1765 else
1058 ev_timer_stop (EV_A_ w); 1766 ev_timer_stop (EV_A_ w);
1059 } 1767 }
1060 else if (w->repeat) 1768 else if (w->repeat)
1769 {
1770 w->at = w->repeat;
1061 ev_timer_start (EV_A_ w); 1771 ev_timer_start (EV_A_ w);
1772 }
1062} 1773}
1063 1774
1064void 1775#if EV_PERIODIC_ENABLE
1776void noinline
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1777ev_periodic_start (EV_P_ ev_periodic *w)
1066{ 1778{
1067 if (ev_is_active (w)) 1779 if (expect_false (ev_is_active (w)))
1068 return; 1780 return;
1069 1781
1782 if (w->reschedule_cb)
1783 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1784 else if (w->interval)
1785 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1786 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072 /* this formula differs from the one in periodic_reify because we do not always round up */ 1787 /* this formula differs from the one in periodic_reify because we do not always round up */
1073 if (w->interval)
1074 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1788 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1789 }
1790 else
1791 ((WT)w)->at = w->offset;
1075 1792
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1793 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1794 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1078 periodics [periodiccnt - 1] = w; 1795 periodics [periodiccnt - 1] = (WT)w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1796 upheap (periodics, periodiccnt - 1);
1080}
1081 1797
1082void 1798 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1799}
1800
1801void noinline
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1802ev_periodic_stop (EV_P_ ev_periodic *w)
1084{ 1803{
1085 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1087 return; 1806 return;
1088 1807
1089 if (w->active < periodiccnt--) 1808 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1809
1810 {
1811 int active = ((W)w)->active;
1812
1813 if (expect_true (--active < --periodiccnt))
1090 { 1814 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1815 periodics [active] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1816 adjustheap (periodics, periodiccnt, active);
1093 } 1817 }
1818 }
1094 1819
1095 ev_stop (EV_A_ (W)w); 1820 ev_stop (EV_A_ (W)w);
1096} 1821}
1822
1823void noinline
1824ev_periodic_again (EV_P_ ev_periodic *w)
1825{
1826 /* TODO: use adjustheap and recalculation */
1827 ev_periodic_stop (EV_A_ w);
1828 ev_periodic_start (EV_A_ w);
1829}
1830#endif
1097 1831
1098#ifndef SA_RESTART 1832#ifndef SA_RESTART
1099# define SA_RESTART 0 1833# define SA_RESTART 0
1100#endif 1834#endif
1101 1835
1102void 1836void noinline
1103ev_signal_start (EV_P_ struct ev_signal *w) 1837ev_signal_start (EV_P_ ev_signal *w)
1104{ 1838{
1839#if EV_MULTIPLICITY
1840 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1841#endif
1105 if (ev_is_active (w)) 1842 if (expect_false (ev_is_active (w)))
1106 return; 1843 return;
1107 1844
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1845 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 1846
1847 {
1848#ifndef _WIN32
1849 sigset_t full, prev;
1850 sigfillset (&full);
1851 sigprocmask (SIG_SETMASK, &full, &prev);
1852#endif
1853
1854 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1855
1856#ifndef _WIN32
1857 sigprocmask (SIG_SETMASK, &prev, 0);
1858#endif
1859 }
1860
1110 ev_start (EV_A_ (W)w, 1); 1861 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1862 wlist_add (&signals [w->signum - 1].head, (WL)w);
1113 1863
1114 if (!w->next) 1864 if (!((WL)w)->next)
1115 { 1865 {
1866#if _WIN32
1867 signal (w->signum, sighandler);
1868#else
1116 struct sigaction sa; 1869 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1870 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1871 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1872 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1873 sigaction (w->signum, &sa, 0);
1874#endif
1121 } 1875 }
1122} 1876}
1123 1877
1124void 1878void noinline
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1879ev_signal_stop (EV_P_ ev_signal *w)
1126{ 1880{
1127 ev_clear_pending (EV_A_ (W)w); 1881 clear_pending (EV_A_ (W)w);
1128 if (!ev_is_active (w)) 1882 if (expect_false (!ev_is_active (w)))
1129 return; 1883 return;
1130 1884
1131 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1885 wlist_del (&signals [w->signum - 1].head, (WL)w);
1132 ev_stop (EV_A_ (W)w); 1886 ev_stop (EV_A_ (W)w);
1133 1887
1134 if (!signals [w->signum - 1].head) 1888 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1889 signal (w->signum, SIG_DFL);
1136} 1890}
1137 1891
1138void 1892void
1139ev_idle_start (EV_P_ struct ev_idle *w) 1893ev_child_start (EV_P_ ev_child *w)
1140{ 1894{
1895#if EV_MULTIPLICITY
1896 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1897#endif
1141 if (ev_is_active (w)) 1898 if (expect_false (ev_is_active (w)))
1142 return; 1899 return;
1143 1900
1144 ev_start (EV_A_ (W)w, ++idlecnt); 1901 ev_start (EV_A_ (W)w, 1);
1145 array_needsize (idles, idlemax, idlecnt, ); 1902 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1146 idles [idlecnt - 1] = w;
1147} 1903}
1148 1904
1149void 1905void
1150ev_idle_stop (EV_P_ struct ev_idle *w) 1906ev_child_stop (EV_P_ ev_child *w)
1151{ 1907{
1152 ev_clear_pending (EV_A_ (W)w); 1908 clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w)) 1909 if (expect_false (!ev_is_active (w)))
1154 return; 1910 return;
1155 1911
1156 idles [w->active - 1] = idles [--idlecnt]; 1912 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1157 ev_stop (EV_A_ (W)w); 1913 ev_stop (EV_A_ (W)w);
1158} 1914}
1159 1915
1916#if EV_STAT_ENABLE
1917
1918# ifdef _WIN32
1919# undef lstat
1920# define lstat(a,b) _stati64 (a,b)
1921# endif
1922
1923#define DEF_STAT_INTERVAL 5.0074891
1924#define MIN_STAT_INTERVAL 0.1074891
1925
1926static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1927
1928#if EV_USE_INOTIFY
1929# define EV_INOTIFY_BUFSIZE 8192
1930
1931static void noinline
1932infy_add (EV_P_ ev_stat *w)
1933{
1934 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);
1935
1936 if (w->wd < 0)
1937 {
1938 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1939
1940 /* monitor some parent directory for speedup hints */
1941 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1942 {
1943 char path [4096];
1944 strcpy (path, w->path);
1945
1946 do
1947 {
1948 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1949 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1950
1951 char *pend = strrchr (path, '/');
1952
1953 if (!pend)
1954 break; /* whoops, no '/', complain to your admin */
1955
1956 *pend = 0;
1957 w->wd = inotify_add_watch (fs_fd, path, mask);
1958 }
1959 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1960 }
1961 }
1962 else
1963 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1964
1965 if (w->wd >= 0)
1966 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1967}
1968
1969static void noinline
1970infy_del (EV_P_ ev_stat *w)
1971{
1972 int slot;
1973 int wd = w->wd;
1974
1975 if (wd < 0)
1976 return;
1977
1978 w->wd = -2;
1979 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1980 wlist_del (&fs_hash [slot].head, (WL)w);
1981
1982 /* remove this watcher, if others are watching it, they will rearm */
1983 inotify_rm_watch (fs_fd, wd);
1984}
1985
1986static void noinline
1987infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1988{
1989 if (slot < 0)
1990 /* overflow, need to check for all hahs slots */
1991 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1992 infy_wd (EV_A_ slot, wd, ev);
1993 else
1994 {
1995 WL w_;
1996
1997 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1998 {
1999 ev_stat *w = (ev_stat *)w_;
2000 w_ = w_->next; /* lets us remove this watcher and all before it */
2001
2002 if (w->wd == wd || wd == -1)
2003 {
2004 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2005 {
2006 w->wd = -1;
2007 infy_add (EV_A_ w); /* re-add, no matter what */
2008 }
2009
2010 stat_timer_cb (EV_A_ &w->timer, 0);
2011 }
2012 }
2013 }
2014}
2015
2016static void
2017infy_cb (EV_P_ ev_io *w, int revents)
2018{
2019 char buf [EV_INOTIFY_BUFSIZE];
2020 struct inotify_event *ev = (struct inotify_event *)buf;
2021 int ofs;
2022 int len = read (fs_fd, buf, sizeof (buf));
2023
2024 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2025 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2026}
2027
2028void inline_size
2029infy_init (EV_P)
2030{
2031 if (fs_fd != -2)
2032 return;
2033
2034 fs_fd = inotify_init ();
2035
2036 if (fs_fd >= 0)
2037 {
2038 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2039 ev_set_priority (&fs_w, EV_MAXPRI);
2040 ev_io_start (EV_A_ &fs_w);
2041 }
2042}
2043
2044void inline_size
2045infy_fork (EV_P)
2046{
2047 int slot;
2048
2049 if (fs_fd < 0)
2050 return;
2051
2052 close (fs_fd);
2053 fs_fd = inotify_init ();
2054
2055 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2056 {
2057 WL w_ = fs_hash [slot].head;
2058 fs_hash [slot].head = 0;
2059
2060 while (w_)
2061 {
2062 ev_stat *w = (ev_stat *)w_;
2063 w_ = w_->next; /* lets us add this watcher */
2064
2065 w->wd = -1;
2066
2067 if (fs_fd >= 0)
2068 infy_add (EV_A_ w); /* re-add, no matter what */
2069 else
2070 ev_timer_start (EV_A_ &w->timer);
2071 }
2072
2073 }
2074}
2075
2076#endif
2077
1160void 2078void
2079ev_stat_stat (EV_P_ ev_stat *w)
2080{
2081 if (lstat (w->path, &w->attr) < 0)
2082 w->attr.st_nlink = 0;
2083 else if (!w->attr.st_nlink)
2084 w->attr.st_nlink = 1;
2085}
2086
2087static void noinline
2088stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2089{
2090 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2091
2092 /* we copy this here each the time so that */
2093 /* prev has the old value when the callback gets invoked */
2094 w->prev = w->attr;
2095 ev_stat_stat (EV_A_ w);
2096
2097 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2098 if (
2099 w->prev.st_dev != w->attr.st_dev
2100 || w->prev.st_ino != w->attr.st_ino
2101 || w->prev.st_mode != w->attr.st_mode
2102 || w->prev.st_nlink != w->attr.st_nlink
2103 || w->prev.st_uid != w->attr.st_uid
2104 || w->prev.st_gid != w->attr.st_gid
2105 || w->prev.st_rdev != w->attr.st_rdev
2106 || w->prev.st_size != w->attr.st_size
2107 || w->prev.st_atime != w->attr.st_atime
2108 || w->prev.st_mtime != w->attr.st_mtime
2109 || w->prev.st_ctime != w->attr.st_ctime
2110 ) {
2111 #if EV_USE_INOTIFY
2112 infy_del (EV_A_ w);
2113 infy_add (EV_A_ w);
2114 ev_stat_stat (EV_A_ w); /* avoid race... */
2115 #endif
2116
2117 ev_feed_event (EV_A_ w, EV_STAT);
2118 }
2119}
2120
2121void
2122ev_stat_start (EV_P_ ev_stat *w)
2123{
2124 if (expect_false (ev_is_active (w)))
2125 return;
2126
2127 /* since we use memcmp, we need to clear any padding data etc. */
2128 memset (&w->prev, 0, sizeof (ev_statdata));
2129 memset (&w->attr, 0, sizeof (ev_statdata));
2130
2131 ev_stat_stat (EV_A_ w);
2132
2133 if (w->interval < MIN_STAT_INTERVAL)
2134 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2135
2136 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2137 ev_set_priority (&w->timer, ev_priority (w));
2138
2139#if EV_USE_INOTIFY
2140 infy_init (EV_A);
2141
2142 if (fs_fd >= 0)
2143 infy_add (EV_A_ w);
2144 else
2145#endif
2146 ev_timer_start (EV_A_ &w->timer);
2147
2148 ev_start (EV_A_ (W)w, 1);
2149}
2150
2151void
2152ev_stat_stop (EV_P_ ev_stat *w)
2153{
2154 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w)))
2156 return;
2157
2158#if EV_USE_INOTIFY
2159 infy_del (EV_A_ w);
2160#endif
2161 ev_timer_stop (EV_A_ &w->timer);
2162
2163 ev_stop (EV_A_ (W)w);
2164}
2165#endif
2166
2167#if EV_IDLE_ENABLE
2168void
2169ev_idle_start (EV_P_ ev_idle *w)
2170{
2171 if (expect_false (ev_is_active (w)))
2172 return;
2173
2174 pri_adjust (EV_A_ (W)w);
2175
2176 {
2177 int active = ++idlecnt [ABSPRI (w)];
2178
2179 ++idleall;
2180 ev_start (EV_A_ (W)w, active);
2181
2182 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2183 idles [ABSPRI (w)][active - 1] = w;
2184 }
2185}
2186
2187void
2188ev_idle_stop (EV_P_ ev_idle *w)
2189{
2190 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w)))
2192 return;
2193
2194 {
2195 int active = ((W)w)->active;
2196
2197 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2198 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2199
2200 ev_stop (EV_A_ (W)w);
2201 --idleall;
2202 }
2203}
2204#endif
2205
2206void
1161ev_prepare_start (EV_P_ struct ev_prepare *w) 2207ev_prepare_start (EV_P_ ev_prepare *w)
1162{ 2208{
1163 if (ev_is_active (w)) 2209 if (expect_false (ev_is_active (w)))
1164 return; 2210 return;
1165 2211
1166 ev_start (EV_A_ (W)w, ++preparecnt); 2212 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, ); 2213 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1168 prepares [preparecnt - 1] = w; 2214 prepares [preparecnt - 1] = w;
1169} 2215}
1170 2216
1171void 2217void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w) 2218ev_prepare_stop (EV_P_ ev_prepare *w)
1173{ 2219{
1174 ev_clear_pending (EV_A_ (W)w); 2220 clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w)) 2221 if (expect_false (!ev_is_active (w)))
1176 return; 2222 return;
1177 2223
2224 {
2225 int active = ((W)w)->active;
1178 prepares [w->active - 1] = prepares [--preparecnt]; 2226 prepares [active - 1] = prepares [--preparecnt];
2227 ((W)prepares [active - 1])->active = active;
2228 }
2229
1179 ev_stop (EV_A_ (W)w); 2230 ev_stop (EV_A_ (W)w);
1180} 2231}
1181 2232
1182void 2233void
1183ev_check_start (EV_P_ struct ev_check *w) 2234ev_check_start (EV_P_ ev_check *w)
1184{ 2235{
1185 if (ev_is_active (w)) 2236 if (expect_false (ev_is_active (w)))
1186 return; 2237 return;
1187 2238
1188 ev_start (EV_A_ (W)w, ++checkcnt); 2239 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, ); 2240 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1190 checks [checkcnt - 1] = w; 2241 checks [checkcnt - 1] = w;
1191} 2242}
1192 2243
1193void 2244void
1194ev_check_stop (EV_P_ struct ev_check *w) 2245ev_check_stop (EV_P_ ev_check *w)
1195{ 2246{
1196 ev_clear_pending (EV_A_ (W)w); 2247 clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w)) 2248 if (expect_false (!ev_is_active (w)))
1198 return; 2249 return;
1199 2250
2251 {
2252 int active = ((W)w)->active;
1200 checks [w->active - 1] = checks [--checkcnt]; 2253 checks [active - 1] = checks [--checkcnt];
2254 ((W)checks [active - 1])->active = active;
2255 }
2256
1201 ev_stop (EV_A_ (W)w); 2257 ev_stop (EV_A_ (W)w);
1202} 2258}
1203 2259
1204void 2260#if EV_EMBED_ENABLE
1205ev_child_start (EV_P_ struct ev_child *w) 2261void noinline
2262ev_embed_sweep (EV_P_ ev_embed *w)
1206{ 2263{
2264 ev_loop (w->other, EVLOOP_NONBLOCK);
2265}
2266
2267static void
2268embed_io_cb (EV_P_ ev_io *io, int revents)
2269{
2270 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2271
1207 if (ev_is_active (w)) 2272 if (ev_cb (w))
2273 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2274 else
2275 ev_loop (w->other, EVLOOP_NONBLOCK);
2276}
2277
2278static void
2279embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2280{
2281 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2282
2283 {
2284 struct ev_loop *loop = w->other;
2285
2286 while (fdchangecnt)
2287 {
2288 fd_reify (EV_A);
2289 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2290 }
2291 }
2292}
2293
2294#if 0
2295static void
2296embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2297{
2298 ev_idle_stop (EV_A_ idle);
2299}
2300#endif
2301
2302void
2303ev_embed_start (EV_P_ ev_embed *w)
2304{
2305 if (expect_false (ev_is_active (w)))
1208 return; 2306 return;
2307
2308 {
2309 struct ev_loop *loop = w->other;
2310 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2311 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2312 }
2313
2314 ev_set_priority (&w->io, ev_priority (w));
2315 ev_io_start (EV_A_ &w->io);
2316
2317 ev_prepare_init (&w->prepare, embed_prepare_cb);
2318 ev_set_priority (&w->prepare, EV_MINPRI);
2319 ev_prepare_start (EV_A_ &w->prepare);
2320
2321 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
1209 2322
1210 ev_start (EV_A_ (W)w, 1); 2323 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212} 2324}
1213 2325
1214void 2326void
1215ev_child_stop (EV_P_ struct ev_child *w) 2327ev_embed_stop (EV_P_ ev_embed *w)
1216{ 2328{
1217 ev_clear_pending (EV_A_ (W)w); 2329 clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 2330 if (expect_false (!ev_is_active (w)))
1219 return; 2331 return;
1220 2332
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2333 ev_io_stop (EV_A_ &w->io);
2334 ev_prepare_stop (EV_A_ &w->prepare);
2335
1222 ev_stop (EV_A_ (W)w); 2336 ev_stop (EV_A_ (W)w);
1223} 2337}
2338#endif
2339
2340#if EV_FORK_ENABLE
2341void
2342ev_fork_start (EV_P_ ev_fork *w)
2343{
2344 if (expect_false (ev_is_active (w)))
2345 return;
2346
2347 ev_start (EV_A_ (W)w, ++forkcnt);
2348 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2349 forks [forkcnt - 1] = w;
2350}
2351
2352void
2353ev_fork_stop (EV_P_ ev_fork *w)
2354{
2355 clear_pending (EV_A_ (W)w);
2356 if (expect_false (!ev_is_active (w)))
2357 return;
2358
2359 {
2360 int active = ((W)w)->active;
2361 forks [active - 1] = forks [--forkcnt];
2362 ((W)forks [active - 1])->active = active;
2363 }
2364
2365 ev_stop (EV_A_ (W)w);
2366}
2367#endif
1224 2368
1225/*****************************************************************************/ 2369/*****************************************************************************/
1226 2370
1227struct ev_once 2371struct ev_once
1228{ 2372{
1229 struct ev_io io; 2373 ev_io io;
1230 struct ev_timer to; 2374 ev_timer to;
1231 void (*cb)(int revents, void *arg); 2375 void (*cb)(int revents, void *arg);
1232 void *arg; 2376 void *arg;
1233}; 2377};
1234 2378
1235static void 2379static void
… …
1238 void (*cb)(int revents, void *arg) = once->cb; 2382 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 2383 void *arg = once->arg;
1240 2384
1241 ev_io_stop (EV_A_ &once->io); 2385 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 2386 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 2387 ev_free (once);
1244 2388
1245 cb (revents, arg); 2389 cb (revents, arg);
1246} 2390}
1247 2391
1248static void 2392static void
1249once_cb_io (EV_P_ struct ev_io *w, int revents) 2393once_cb_io (EV_P_ ev_io *w, int revents)
1250{ 2394{
1251 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2395 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1252} 2396}
1253 2397
1254static void 2398static void
1255once_cb_to (EV_P_ struct ev_timer *w, int revents) 2399once_cb_to (EV_P_ ev_timer *w, int revents)
1256{ 2400{
1257 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2401 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1258} 2402}
1259 2403
1260void 2404void
1261ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2405ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262{ 2406{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 2407 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 2408
1265 if (!once) 2409 if (expect_false (!once))
2410 {
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2411 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 2412 return;
1268 { 2413 }
2414
1269 once->cb = cb; 2415 once->cb = cb;
1270 once->arg = arg; 2416 once->arg = arg;
1271 2417
1272 ev_watcher_init (&once->io, once_cb_io); 2418 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 2419 if (fd >= 0)
1274 { 2420 {
1275 ev_io_set (&once->io, fd, events); 2421 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 2422 ev_io_start (EV_A_ &once->io);
1277 } 2423 }
1278 2424
1279 ev_watcher_init (&once->to, once_cb_to); 2425 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 2426 if (timeout >= 0.)
1281 { 2427 {
1282 ev_timer_set (&once->to, timeout, 0.); 2428 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 2429 ev_timer_start (EV_A_ &once->to);
1284 }
1285 }
1286}
1287
1288/*****************************************************************************/
1289
1290#if 0
1291
1292struct ev_io wio;
1293
1294static void
1295sin_cb (struct ev_io *w, int revents)
1296{
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298}
1299
1300static void
1301ocb (struct ev_timer *w, int revents)
1302{
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304 ev_timer_stop (w);
1305 ev_timer_start (w);
1306}
1307
1308static void
1309scb (struct ev_signal *w, int revents)
1310{
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315
1316static void
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i)
1335 { 2430 }
1336 struct ev_timer *w = t + i;
1337 ev_watcher_init (w, ocb, i);
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339 ev_timer_start (w);
1340 if (drand48 () < 0.5)
1341 ev_timer_stop (w);
1342 }
1343#endif
1344
1345 struct ev_timer t1;
1346 ev_timer_init (&t1, ocb, 5, 10);
1347 ev_timer_start (&t1);
1348
1349 struct ev_signal sig;
1350 ev_signal_init (&sig, scb, SIGQUIT);
1351 ev_signal_start (&sig);
1352
1353 struct ev_check cw;
1354 ev_check_init (&cw, gcb);
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364} 2431}
1365 2432
2433#if EV_MULTIPLICITY
2434 #include "ev_wrap.h"
1366#endif 2435#endif
1367 2436
2437#ifdef __cplusplus
2438}
2439#endif
1368 2440
1369
1370

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