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Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 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
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 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
37# endif 57# endif
38 58
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 59# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 61# define EV_USE_NANOSLEEP 1
62# else
63# define EV_USE_NANOSLEEP 0
64# endif
41# endif 65# endif
42 66
43# if HAVE_POLL && HAVE_POLL_H 67# ifndef EV_USE_SELECT
68# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif
45# endif 73# endif
46 74
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_POLL 1
78# else
79# define EV_USE_POLL 0
80# endif
49# endif 81# endif
50 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
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 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
53# endif 113# endif
54 114
55#endif 115#endif
56 116
57#include <math.h> 117#include <math.h>
58#include <stdlib.h> 118#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 119#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 120#include <stddef.h>
63 121
64#include <stdio.h> 122#include <stdio.h>
65 123
66#include <assert.h> 124#include <assert.h>
67#include <errno.h> 125#include <errno.h>
68#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
69#ifndef WIN32 137#ifndef _WIN32
138# include <sys/time.h>
70# 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
71#endif 146# endif
72#include <sys/time.h> 147#endif
73#include <time.h>
74 148
75/**/ 149/**/
76 150
77#ifndef EV_USE_MONOTONIC 151#ifndef EV_USE_MONOTONIC
78# 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
79#endif 161#endif
80 162
81#ifndef EV_USE_SELECT 163#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 164# define EV_USE_SELECT 1
83#endif 165#endif
84 166
85#ifndef EV_USE_POLL 167#ifndef EV_USE_POLL
86# define EV_USE_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
87#endif 173#endif
88 174
89#ifndef EV_USE_EPOLL 175#ifndef EV_USE_EPOLL
90# define EV_USE_EPOLL 0 176# define EV_USE_EPOLL 0
91#endif 177#endif
92 178
93#ifndef EV_USE_KQUEUE 179#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 180# define EV_USE_KQUEUE 0
95#endif 181#endif
96 182
183#ifndef EV_USE_PORT
184# define EV_USE_PORT 0
185#endif
186
97#ifndef EV_USE_WIN32 187#ifndef EV_USE_INOTIFY
98# ifdef WIN32 188# define EV_USE_INOTIFY 0
99# define EV_USE_WIN32 1 189#endif
190
191#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL
193# define EV_PID_HASHSIZE 1
100# else 194# else
101# define EV_USE_WIN32 0 195# define EV_PID_HASHSIZE 16
102# endif 196# endif
103#endif 197#endif
104 198
105#ifndef EV_USE_REALTIME 199#ifndef EV_INOTIFY_HASHSIZE
106# define EV_USE_REALTIME 1 200# if EV_MINIMAL
201# define EV_INOTIFY_HASHSIZE 1
202# else
203# define EV_INOTIFY_HASHSIZE 16
204# endif
107#endif 205#endif
108 206
109/**/ 207/**/
110 208
111#ifndef CLOCK_MONOTONIC 209#ifndef CLOCK_MONOTONIC
… …
116#ifndef CLOCK_REALTIME 214#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 215# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 216# define EV_USE_REALTIME 0
119#endif 217#endif
120 218
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
121/**/ 238/**/
122 239
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
123#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) */
124#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) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#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 */
127 253
128#include "ev.h"
129
130#if __GNUC__ >= 3 254#if __GNUC__ >= 4
131# define expect(expr,value) __builtin_expect ((expr),(value)) 255# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 256# define noinline __attribute__ ((noinline))
133#else 257#else
134# define expect(expr,value) (expr) 258# define expect(expr,value) (expr)
135# define inline static 259# define noinline
260# if __STDC_VERSION__ < 199901L
261# define inline
262# endif
136#endif 263#endif
137 264
138#define expect_false(expr) expect ((expr) != 0, 0) 265#define expect_false(expr) expect ((expr) != 0, 0)
139#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
140 274
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 277
278#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */
280
144typedef struct ev_watcher *W; 281typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 282typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 283typedef ev_watcher_time *WT;
147 284
285#if EV_USE_MONOTONIC
286/* sig_atomic_t is used to avoid per-thread variables or locking but still */
287/* giving it a reasonably high chance of working on typical architetcures */
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 288static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
289#endif
290
291#ifdef _WIN32
292# include "ev_win32.c"
293#endif
149 294
150/*****************************************************************************/ 295/*****************************************************************************/
151 296
297static void (*syserr_cb)(const char *msg);
298
299void
300ev_set_syserr_cb (void (*cb)(const char *msg))
301{
302 syserr_cb = cb;
303}
304
305static void noinline
306syserr (const char *msg)
307{
308 if (!msg)
309 msg = "(libev) system error";
310
311 if (syserr_cb)
312 syserr_cb (msg);
313 else
314 {
315 perror (msg);
316 abort ();
317 }
318}
319
320static void *(*alloc)(void *ptr, long size);
321
322void
323ev_set_allocator (void *(*cb)(void *ptr, long size))
324{
325 alloc = cb;
326}
327
328inline_speed void *
329ev_realloc (void *ptr, long size)
330{
331 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
332
333 if (!ptr && size)
334 {
335 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
336 abort ();
337 }
338
339 return ptr;
340}
341
342#define ev_malloc(size) ev_realloc (0, (size))
343#define ev_free(ptr) ev_realloc ((ptr), 0)
344
345/*****************************************************************************/
346
152typedef struct 347typedef struct
153{ 348{
154 struct ev_watcher_list *head; 349 WL head;
155 unsigned char events; 350 unsigned char events;
156 unsigned char reify; 351 unsigned char reify;
352#if EV_SELECT_IS_WINSOCKET
353 SOCKET handle;
354#endif
157} ANFD; 355} ANFD;
158 356
159typedef struct 357typedef struct
160{ 358{
161 W w; 359 W w;
162 int events; 360 int events;
163} ANPENDING; 361} ANPENDING;
164 362
363#if EV_USE_INOTIFY
364typedef struct
365{
366 WL head;
367} ANFS;
368#endif
369
165#if EV_MULTIPLICITY 370#if EV_MULTIPLICITY
166 371
167struct ev_loop 372 struct ev_loop
168{ 373 {
374 ev_tstamp ev_rt_now;
375 #define ev_rt_now ((loop)->ev_rt_now)
169# define VAR(name,decl) decl; 376 #define VAR(name,decl) decl;
170# include "ev_vars.h" 377 #include "ev_vars.h"
171};
172# undef VAR 378 #undef VAR
379 };
173# include "ev_wrap.h" 380 #include "ev_wrap.h"
381
382 static struct ev_loop default_loop_struct;
383 struct ev_loop *ev_default_loop_ptr;
174 384
175#else 385#else
176 386
387 ev_tstamp ev_rt_now;
177# define VAR(name,decl) static decl; 388 #define VAR(name,decl) static decl;
178# include "ev_vars.h" 389 #include "ev_vars.h"
179# undef VAR 390 #undef VAR
391
392 static int ev_default_loop_ptr;
180 393
181#endif 394#endif
182 395
183/*****************************************************************************/ 396/*****************************************************************************/
184 397
185inline ev_tstamp 398ev_tstamp
186ev_time (void) 399ev_time (void)
187{ 400{
188#if EV_USE_REALTIME 401#if EV_USE_REALTIME
189 struct timespec ts; 402 struct timespec ts;
190 clock_gettime (CLOCK_REALTIME, &ts); 403 clock_gettime (CLOCK_REALTIME, &ts);
… …
194 gettimeofday (&tv, 0); 407 gettimeofday (&tv, 0);
195 return tv.tv_sec + tv.tv_usec * 1e-6; 408 return tv.tv_sec + tv.tv_usec * 1e-6;
196#endif 409#endif
197} 410}
198 411
199inline ev_tstamp 412ev_tstamp inline_size
200get_clock (void) 413get_clock (void)
201{ 414{
202#if EV_USE_MONOTONIC 415#if EV_USE_MONOTONIC
203 if (expect_true (have_monotonic)) 416 if (expect_true (have_monotonic))
204 { 417 {
… …
209#endif 422#endif
210 423
211 return ev_time (); 424 return ev_time ();
212} 425}
213 426
427#if EV_MULTIPLICITY
214ev_tstamp 428ev_tstamp
215ev_now (EV_P) 429ev_now (EV_P)
216{ 430{
217 return rt_now; 431 return ev_rt_now;
218} 432}
433#endif
219 434
220#define array_roundsize(base,n) ((n) | 4 & ~3) 435void
221 436ev_sleep (ev_tstamp delay)
222#define array_needsize(base,cur,cnt,init) \ 437{
223 if (expect_false ((cnt) > cur)) \ 438 if (delay > 0.)
224 { \
225 int newcnt = cur; \
226 do \
227 { \
228 newcnt = array_roundsize (base, newcnt << 1); \
229 } \
230 while ((cnt) > newcnt); \
231 \
232 base = realloc (base, sizeof (*base) * (newcnt)); \
233 init (base + cur, newcnt - cur); \
234 cur = newcnt; \
235 } 439 {
440#if EV_USE_NANOSLEEP
441 struct timespec ts;
442
443 ts.tv_sec = (time_t)delay;
444 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
445
446 nanosleep (&ts, 0);
447#elif defined(_WIN32)
448 Sleep (delay * 1e3);
449#else
450 struct timeval tv;
451
452 tv.tv_sec = (time_t)delay;
453 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
454
455 select (0, 0, 0, 0, &tv);
456#endif
457 }
458}
236 459
237/*****************************************************************************/ 460/*****************************************************************************/
238 461
239static void 462int inline_size
463array_nextsize (int elem, int cur, int cnt)
464{
465 int ncur = cur + 1;
466
467 do
468 ncur <<= 1;
469 while (cnt > ncur);
470
471 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
472 if (elem * ncur > 4096)
473 {
474 ncur *= elem;
475 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
476 ncur = ncur - sizeof (void *) * 4;
477 ncur /= elem;
478 }
479
480 return ncur;
481}
482
483static noinline void *
484array_realloc (int elem, void *base, int *cur, int cnt)
485{
486 *cur = array_nextsize (elem, *cur, cnt);
487 return ev_realloc (base, elem * *cur);
488}
489
490#define array_needsize(type,base,cur,cnt,init) \
491 if (expect_false ((cnt) > (cur))) \
492 { \
493 int ocur_ = (cur); \
494 (base) = (type *)array_realloc \
495 (sizeof (type), (base), &(cur), (cnt)); \
496 init ((base) + (ocur_), (cur) - ocur_); \
497 }
498
499#if 0
500#define array_slim(type,stem) \
501 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
502 { \
503 stem ## max = array_roundsize (stem ## cnt >> 1); \
504 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
505 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
506 }
507#endif
508
509#define array_free(stem, idx) \
510 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
511
512/*****************************************************************************/
513
514void noinline
515ev_feed_event (EV_P_ void *w, int revents)
516{
517 W w_ = (W)w;
518 int pri = ABSPRI (w_);
519
520 if (expect_false (w_->pending))
521 pendings [pri][w_->pending - 1].events |= revents;
522 else
523 {
524 w_->pending = ++pendingcnt [pri];
525 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
526 pendings [pri][w_->pending - 1].w = w_;
527 pendings [pri][w_->pending - 1].events = revents;
528 }
529}
530
531void inline_speed
532queue_events (EV_P_ W *events, int eventcnt, int type)
533{
534 int i;
535
536 for (i = 0; i < eventcnt; ++i)
537 ev_feed_event (EV_A_ events [i], type);
538}
539
540/*****************************************************************************/
541
542void inline_size
240anfds_init (ANFD *base, int count) 543anfds_init (ANFD *base, int count)
241{ 544{
242 while (count--) 545 while (count--)
243 { 546 {
244 base->head = 0; 547 base->head = 0;
… …
247 550
248 ++base; 551 ++base;
249 } 552 }
250} 553}
251 554
252static void 555void inline_speed
253event (EV_P_ W w, int events)
254{
255 if (w->pending)
256 {
257 pendings [ABSPRI (w)][w->pending - 1].events |= events;
258 return;
259 }
260
261 w->pending = ++pendingcnt [ABSPRI (w)];
262 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263 pendings [ABSPRI (w)][w->pending - 1].w = w;
264 pendings [ABSPRI (w)][w->pending - 1].events = events;
265}
266
267static void
268queue_events (EV_P_ W *events, int eventcnt, int type)
269{
270 int i;
271
272 for (i = 0; i < eventcnt; ++i)
273 event (EV_A_ events [i], type);
274}
275
276static void
277fd_event (EV_P_ int fd, int events) 556fd_event (EV_P_ int fd, int revents)
278{ 557{
279 ANFD *anfd = anfds + fd; 558 ANFD *anfd = anfds + fd;
280 struct ev_io *w; 559 ev_io *w;
281 560
282 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 561 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
283 { 562 {
284 int ev = w->events & events; 563 int ev = w->events & revents;
285 564
286 if (ev) 565 if (ev)
287 event (EV_A_ (W)w, ev); 566 ev_feed_event (EV_A_ (W)w, ev);
288 } 567 }
289} 568}
290 569
291/*****************************************************************************/ 570void
571ev_feed_fd_event (EV_P_ int fd, int revents)
572{
573 if (fd >= 0 && fd < anfdmax)
574 fd_event (EV_A_ fd, revents);
575}
292 576
293static void 577void inline_size
294fd_reify (EV_P) 578fd_reify (EV_P)
295{ 579{
296 int i; 580 int i;
297 581
298 for (i = 0; i < fdchangecnt; ++i) 582 for (i = 0; i < fdchangecnt; ++i)
299 { 583 {
300 int fd = fdchanges [i]; 584 int fd = fdchanges [i];
301 ANFD *anfd = anfds + fd; 585 ANFD *anfd = anfds + fd;
302 struct ev_io *w; 586 ev_io *w;
303 587
304 int events = 0; 588 unsigned char events = 0;
305 589
306 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 590 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
307 events |= w->events; 591 events |= (unsigned char)w->events;
308 592
309 anfd->reify = 0; 593#if EV_SELECT_IS_WINSOCKET
310 594 if (events)
311 if (anfd->events != events)
312 { 595 {
313 method_modify (EV_A_ fd, anfd->events, events); 596 unsigned long argp;
314 anfd->events = events; 597 anfd->handle = _get_osfhandle (fd);
598 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
315 } 599 }
600#endif
601
602 {
603 unsigned char o_events = anfd->events;
604 unsigned char o_reify = anfd->reify;
605
606 anfd->reify = 0;
607 anfd->events = events;
608
609 if (o_events != events || o_reify & EV_IOFDSET)
610 backend_modify (EV_A_ fd, o_events, events);
611 }
316 } 612 }
317 613
318 fdchangecnt = 0; 614 fdchangecnt = 0;
319} 615}
320 616
321static void 617void inline_size
322fd_change (EV_P_ int fd) 618fd_change (EV_P_ int fd, int flags)
323{ 619{
324 if (anfds [fd].reify || fdchangecnt < 0) 620 unsigned char reify = anfds [fd].reify;
325 return;
326
327 anfds [fd].reify = 1; 621 anfds [fd].reify |= flags;
328 622
623 if (expect_true (!reify))
624 {
329 ++fdchangecnt; 625 ++fdchangecnt;
330 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 626 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331 fdchanges [fdchangecnt - 1] = fd; 627 fdchanges [fdchangecnt - 1] = fd;
628 }
332} 629}
333 630
334static void 631void inline_speed
335fd_kill (EV_P_ int fd) 632fd_kill (EV_P_ int fd)
336{ 633{
337 struct ev_io *w; 634 ev_io *w;
338 635
339 while ((w = (struct ev_io *)anfds [fd].head)) 636 while ((w = (ev_io *)anfds [fd].head))
340 { 637 {
341 ev_io_stop (EV_A_ w); 638 ev_io_stop (EV_A_ w);
342 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 639 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
343 } 640 }
641}
642
643int inline_size
644fd_valid (int fd)
645{
646#ifdef _WIN32
647 return _get_osfhandle (fd) != -1;
648#else
649 return fcntl (fd, F_GETFD) != -1;
650#endif
344} 651}
345 652
346/* called on EBADF to verify fds */ 653/* called on EBADF to verify fds */
347static void 654static void noinline
348fd_ebadf (EV_P) 655fd_ebadf (EV_P)
349{ 656{
350 int fd; 657 int fd;
351 658
352 for (fd = 0; fd < anfdmax; ++fd) 659 for (fd = 0; fd < anfdmax; ++fd)
353 if (anfds [fd].events) 660 if (anfds [fd].events)
354 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 661 if (!fd_valid (fd) == -1 && errno == EBADF)
355 fd_kill (EV_A_ fd); 662 fd_kill (EV_A_ fd);
356} 663}
357 664
358/* called on ENOMEM in select/poll to kill some fds and retry */ 665/* called on ENOMEM in select/poll to kill some fds and retry */
359static void 666static void noinline
360fd_enomem (EV_P) 667fd_enomem (EV_P)
361{ 668{
362 int fd; 669 int fd;
363 670
364 for (fd = anfdmax; fd--; ) 671 for (fd = anfdmax; fd--; )
365 if (anfds [fd].events) 672 if (anfds [fd].events)
366 { 673 {
367 close (fd);
368 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
369 return; 675 return;
370 } 676 }
371} 677}
372 678
373/* susually called after fork if method needs to re-arm all fds from scratch */ 679/* usually called after fork if backend needs to re-arm all fds from scratch */
374static void 680static void noinline
375fd_rearm_all (EV_P) 681fd_rearm_all (EV_P)
376{ 682{
377 int fd; 683 int fd;
378 684
379 /* this should be highly optimised to not do anything but set a flag */
380 for (fd = 0; fd < anfdmax; ++fd) 685 for (fd = 0; fd < anfdmax; ++fd)
381 if (anfds [fd].events) 686 if (anfds [fd].events)
382 { 687 {
383 anfds [fd].events = 0; 688 anfds [fd].events = 0;
384 fd_change (EV_A_ fd); 689 fd_change (EV_A_ fd, EV_IOFDSET | 1);
385 } 690 }
386} 691}
387 692
388/*****************************************************************************/ 693/*****************************************************************************/
389 694
390static void 695void inline_speed
391upheap (WT *heap, int k) 696upheap (WT *heap, int k)
392{ 697{
393 WT w = heap [k]; 698 WT w = heap [k];
394 699
395 while (k && heap [k >> 1]->at > w->at) 700 while (k)
396 { 701 {
702 int p = (k - 1) >> 1;
703
704 if (heap [p]->at <= w->at)
705 break;
706
397 heap [k] = heap [k >> 1]; 707 heap [k] = heap [p];
398 ((W)heap [k])->active = k + 1; 708 ((W)heap [k])->active = k + 1;
399 k >>= 1; 709 k = p;
400 } 710 }
401 711
402 heap [k] = w; 712 heap [k] = w;
403 ((W)heap [k])->active = k + 1; 713 ((W)heap [k])->active = k + 1;
404
405} 714}
406 715
407static void 716void inline_speed
408downheap (WT *heap, int N, int k) 717downheap (WT *heap, int N, int k)
409{ 718{
410 WT w = heap [k]; 719 WT w = heap [k];
411 720
412 while (k < (N >> 1)) 721 for (;;)
413 { 722 {
414 int j = k << 1; 723 int c = (k << 1) + 1;
415 724
416 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 725 if (c >= N)
417 ++j;
418
419 if (w->at <= heap [j]->at)
420 break; 726 break;
421 727
728 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
729 ? 1 : 0;
730
731 if (w->at <= heap [c]->at)
732 break;
733
422 heap [k] = heap [j]; 734 heap [k] = heap [c];
423 ((W)heap [k])->active = k + 1; 735 ((W)heap [k])->active = k + 1;
736
424 k = j; 737 k = c;
425 } 738 }
426 739
427 heap [k] = w; 740 heap [k] = w;
428 ((W)heap [k])->active = k + 1; 741 ((W)heap [k])->active = k + 1;
429} 742}
430 743
744void inline_size
745adjustheap (WT *heap, int N, int k)
746{
747 upheap (heap, k);
748 downheap (heap, N, k);
749}
750
431/*****************************************************************************/ 751/*****************************************************************************/
432 752
433typedef struct 753typedef struct
434{ 754{
435 struct ev_watcher_list *head; 755 WL head;
436 sig_atomic_t volatile gotsig; 756 sig_atomic_t volatile gotsig;
437} ANSIG; 757} ANSIG;
438 758
439static ANSIG *signals; 759static ANSIG *signals;
440static int signalmax; 760static int signalmax;
441 761
442static int sigpipe [2]; 762static int sigpipe [2];
443static sig_atomic_t volatile gotsig; 763static sig_atomic_t volatile gotsig;
444static struct ev_io sigev; 764static ev_io sigev;
445 765
446static void 766void inline_size
447signals_init (ANSIG *base, int count) 767signals_init (ANSIG *base, int count)
448{ 768{
449 while (count--) 769 while (count--)
450 { 770 {
451 base->head = 0; 771 base->head = 0;
… …
456} 776}
457 777
458static void 778static void
459sighandler (int signum) 779sighandler (int signum)
460{ 780{
781#if _WIN32
782 signal (signum, sighandler);
783#endif
784
461 signals [signum - 1].gotsig = 1; 785 signals [signum - 1].gotsig = 1;
462 786
463 if (!gotsig) 787 if (!gotsig)
464 { 788 {
465 int old_errno = errno; 789 int old_errno = errno;
… …
467 write (sigpipe [1], &signum, 1); 791 write (sigpipe [1], &signum, 1);
468 errno = old_errno; 792 errno = old_errno;
469 } 793 }
470} 794}
471 795
796void noinline
797ev_feed_signal_event (EV_P_ int signum)
798{
799 WL w;
800
801#if EV_MULTIPLICITY
802 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
803#endif
804
805 --signum;
806
807 if (signum < 0 || signum >= signalmax)
808 return;
809
810 signals [signum].gotsig = 0;
811
812 for (w = signals [signum].head; w; w = w->next)
813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
814}
815
472static void 816static void
473sigcb (EV_P_ struct ev_io *iow, int revents) 817sigcb (EV_P_ ev_io *iow, int revents)
474{ 818{
475 struct ev_watcher_list *w;
476 int signum; 819 int signum;
477 820
478 read (sigpipe [0], &revents, 1); 821 read (sigpipe [0], &revents, 1);
479 gotsig = 0; 822 gotsig = 0;
480 823
481 for (signum = signalmax; signum--; ) 824 for (signum = signalmax; signum--; )
482 if (signals [signum].gotsig) 825 if (signals [signum].gotsig)
483 { 826 ev_feed_signal_event (EV_A_ signum + 1);
484 signals [signum].gotsig = 0;
485
486 for (w = signals [signum].head; w; w = w->next)
487 event (EV_A_ (W)w, EV_SIGNAL);
488 }
489} 827}
490 828
491static void 829void inline_speed
830fd_intern (int fd)
831{
832#ifdef _WIN32
833 int arg = 1;
834 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
835#else
836 fcntl (fd, F_SETFD, FD_CLOEXEC);
837 fcntl (fd, F_SETFL, O_NONBLOCK);
838#endif
839}
840
841static void noinline
492siginit (EV_P) 842siginit (EV_P)
493{ 843{
494#ifndef WIN32 844 fd_intern (sigpipe [0]);
495 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 845 fd_intern (sigpipe [1]);
496 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498 /* rather than sort out wether we really need nb, set it */
499 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501#endif
502 846
503 ev_io_set (&sigev, sigpipe [0], EV_READ); 847 ev_io_set (&sigev, sigpipe [0], EV_READ);
504 ev_io_start (EV_A_ &sigev); 848 ev_io_start (EV_A_ &sigev);
505 ev_unref (EV_A); /* child watcher should not keep loop alive */ 849 ev_unref (EV_A); /* child watcher should not keep loop alive */
506} 850}
507 851
508/*****************************************************************************/ 852/*****************************************************************************/
509 853
854static WL childs [EV_PID_HASHSIZE];
855
510#ifndef WIN32 856#ifndef _WIN32
511 857
512static struct ev_child *childs [PID_HASHSIZE];
513static struct ev_signal childev; 858static ev_signal childev;
859
860void inline_speed
861child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
862{
863 ev_child *w;
864
865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
866 if (w->pid == pid || !w->pid)
867 {
868 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
869 w->rpid = pid;
870 w->rstatus = status;
871 ev_feed_event (EV_A_ (W)w, EV_CHILD);
872 }
873}
514 874
515#ifndef WCONTINUED 875#ifndef WCONTINUED
516# define WCONTINUED 0 876# define WCONTINUED 0
517#endif 877#endif
518 878
519static void 879static void
520child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
521{
522 struct ev_child *w;
523
524 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
525 if (w->pid == pid || !w->pid)
526 {
527 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
528 w->rpid = pid;
529 w->rstatus = status;
530 event (EV_A_ (W)w, EV_CHILD);
531 }
532}
533
534static void
535childcb (EV_P_ struct ev_signal *sw, int revents) 880childcb (EV_P_ ev_signal *sw, int revents)
536{ 881{
537 int pid, status; 882 int pid, status;
538 883
884 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
539 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 885 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540 { 886 if (!WCONTINUED
887 || errno != EINVAL
888 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
889 return;
890
541 /* make sure we are called again until all childs have been reaped */ 891 /* make sure we are called again until all childs have been reaped */
892 /* we need to do it this way so that the callback gets called before we continue */
542 event (EV_A_ (W)sw, EV_SIGNAL); 893 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543 894
544 child_reap (EV_A_ sw, pid, pid, status); 895 child_reap (EV_A_ sw, pid, pid, status);
896 if (EV_PID_HASHSIZE > 1)
545 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 897 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
546 }
547} 898}
548 899
549#endif 900#endif
550 901
551/*****************************************************************************/ 902/*****************************************************************************/
552 903
904#if EV_USE_PORT
905# include "ev_port.c"
906#endif
553#if EV_USE_KQUEUE 907#if EV_USE_KQUEUE
554# include "ev_kqueue.c" 908# include "ev_kqueue.c"
555#endif 909#endif
556#if EV_USE_EPOLL 910#if EV_USE_EPOLL
557# include "ev_epoll.c" 911# include "ev_epoll.c"
… …
574{ 928{
575 return EV_VERSION_MINOR; 929 return EV_VERSION_MINOR;
576} 930}
577 931
578/* return true if we are running with elevated privileges and should ignore env variables */ 932/* return true if we are running with elevated privileges and should ignore env variables */
579static int 933int inline_size
580enable_secure (void) 934enable_secure (void)
581{ 935{
582#ifdef WIN32 936#ifdef _WIN32
583 return 0; 937 return 0;
584#else 938#else
585 return getuid () != geteuid () 939 return getuid () != geteuid ()
586 || getgid () != getegid (); 940 || getgid () != getegid ();
587#endif 941#endif
588} 942}
589 943
590int 944unsigned int
591ev_method (EV_P) 945ev_supported_backends (void)
592{ 946{
593 return method; 947 unsigned int flags = 0;
594}
595 948
596static void 949 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
597loop_init (EV_P_ int methods) 950 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
951 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
952 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
953 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
954
955 return flags;
956}
957
958unsigned int
959ev_recommended_backends (void)
598{ 960{
599 if (!method) 961 unsigned int flags = ev_supported_backends ();
962
963#ifndef __NetBSD__
964 /* kqueue is borked on everything but netbsd apparently */
965 /* it usually doesn't work correctly on anything but sockets and pipes */
966 flags &= ~EVBACKEND_KQUEUE;
967#endif
968#ifdef __APPLE__
969 // flags &= ~EVBACKEND_KQUEUE; for documentation
970 flags &= ~EVBACKEND_POLL;
971#endif
972
973 return flags;
974}
975
976unsigned int
977ev_embeddable_backends (void)
978{
979 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
980
981 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
982 /* please fix it and tell me how to detect the fix */
983 flags &= ~EVBACKEND_EPOLL;
984
985 return flags;
986}
987
988unsigned int
989ev_backend (EV_P)
990{
991 return backend;
992}
993
994unsigned int
995ev_loop_count (EV_P)
996{
997 return loop_count;
998}
999
1000void
1001ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1002{
1003 io_blocktime = interval;
1004}
1005
1006void
1007ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1008{
1009 timeout_blocktime = interval;
1010}
1011
1012static void noinline
1013loop_init (EV_P_ unsigned int flags)
1014{
1015 if (!backend)
600 { 1016 {
601#if EV_USE_MONOTONIC 1017#if EV_USE_MONOTONIC
602 { 1018 {
603 struct timespec ts; 1019 struct timespec ts;
604 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1020 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605 have_monotonic = 1; 1021 have_monotonic = 1;
606 } 1022 }
607#endif 1023#endif
608 1024
609 rt_now = ev_time (); 1025 ev_rt_now = ev_time ();
610 mn_now = get_clock (); 1026 mn_now = get_clock ();
611 now_floor = mn_now; 1027 now_floor = mn_now;
612 rtmn_diff = rt_now - mn_now; 1028 rtmn_diff = ev_rt_now - mn_now;
613 1029
614 if (methods == EVMETHOD_AUTO) 1030 io_blocktime = 0.;
615 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1031 timeout_blocktime = 0.;
1032
1033 /* pid check not overridable via env */
1034#ifndef _WIN32
1035 if (flags & EVFLAG_FORKCHECK)
1036 curpid = getpid ();
1037#endif
1038
1039 if (!(flags & EVFLAG_NOENV)
1040 && !enable_secure ()
1041 && getenv ("LIBEV_FLAGS"))
616 methods = atoi (getenv ("LIBEV_METHODS")); 1042 flags = atoi (getenv ("LIBEV_FLAGS"));
617 else
618 methods = EVMETHOD_ANY;
619 1043
620 method = 0; 1044 if (!(flags & 0x0000ffffUL))
1045 flags |= ev_recommended_backends ();
1046
1047 backend = 0;
1048 backend_fd = -1;
621#if EV_USE_WIN32 1049#if EV_USE_INOTIFY
622 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1050 fs_fd = -2;
1051#endif
1052
1053#if EV_USE_PORT
1054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623#endif 1055#endif
624#if EV_USE_KQUEUE 1056#if EV_USE_KQUEUE
625 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1057 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626#endif 1058#endif
627#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
628 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1060 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629#endif 1061#endif
630#if EV_USE_POLL 1062#if EV_USE_POLL
631 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1063 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632#endif 1064#endif
633#if EV_USE_SELECT 1065#if EV_USE_SELECT
634 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1066 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635#endif 1067#endif
636 }
637}
638 1068
639void 1069 ev_init (&sigev, sigcb);
1070 ev_set_priority (&sigev, EV_MAXPRI);
1071 }
1072}
1073
1074static void noinline
640loop_destroy (EV_P) 1075loop_destroy (EV_P)
641{ 1076{
1077 int i;
1078
642#if EV_USE_WIN32 1079#if EV_USE_INOTIFY
643 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1080 if (fs_fd >= 0)
1081 close (fs_fd);
1082#endif
1083
1084 if (backend_fd >= 0)
1085 close (backend_fd);
1086
1087#if EV_USE_PORT
1088 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
644#endif 1089#endif
645#if EV_USE_KQUEUE 1090#if EV_USE_KQUEUE
646 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1091 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
647#endif 1092#endif
648#if EV_USE_EPOLL 1093#if EV_USE_EPOLL
649 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1094 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
650#endif 1095#endif
651#if EV_USE_POLL 1096#if EV_USE_POLL
652 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1097 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
653#endif 1098#endif
654#if EV_USE_SELECT 1099#if EV_USE_SELECT
655 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1100 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
656#endif 1101#endif
657 1102
658 method = 0; 1103 for (i = NUMPRI; i--; )
659 /*TODO*/ 1104 {
660} 1105 array_free (pending, [i]);
1106#if EV_IDLE_ENABLE
1107 array_free (idle, [i]);
1108#endif
1109 }
661 1110
662void 1111 ev_free (anfds); anfdmax = 0;
1112
1113 /* have to use the microsoft-never-gets-it-right macro */
1114 array_free (fdchange, EMPTY);
1115 array_free (timer, EMPTY);
1116#if EV_PERIODIC_ENABLE
1117 array_free (periodic, EMPTY);
1118#endif
1119#if EV_FORK_ENABLE
1120 array_free (fork, EMPTY);
1121#endif
1122 array_free (prepare, EMPTY);
1123 array_free (check, EMPTY);
1124
1125 backend = 0;
1126}
1127
1128void inline_size infy_fork (EV_P);
1129
1130void inline_size
663loop_fork (EV_P) 1131loop_fork (EV_P)
664{ 1132{
665 /*TODO*/ 1133#if EV_USE_PORT
1134 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1135#endif
1136#if EV_USE_KQUEUE
1137 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1138#endif
666#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
667 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1140 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
668#endif 1141#endif
669#if EV_USE_KQUEUE 1142#if EV_USE_INOTIFY
670 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1143 infy_fork (EV_A);
671#endif 1144#endif
1145
1146 if (ev_is_active (&sigev))
1147 {
1148 /* default loop */
1149
1150 ev_ref (EV_A);
1151 ev_io_stop (EV_A_ &sigev);
1152 close (sigpipe [0]);
1153 close (sigpipe [1]);
1154
1155 while (pipe (sigpipe))
1156 syserr ("(libev) error creating pipe");
1157
1158 siginit (EV_A);
1159 }
1160
1161 postfork = 0;
672} 1162}
673 1163
674#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
675struct ev_loop * 1165struct ev_loop *
676ev_loop_new (int methods) 1166ev_loop_new (unsigned int flags)
677{ 1167{
678 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1168 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
679 1169
1170 memset (loop, 0, sizeof (struct ev_loop));
1171
680 loop_init (EV_A_ methods); 1172 loop_init (EV_A_ flags);
681 1173
682 if (ev_method (EV_A)) 1174 if (ev_backend (EV_A))
683 return loop; 1175 return loop;
684 1176
685 return 0; 1177 return 0;
686} 1178}
687 1179
688void 1180void
689ev_loop_destroy (EV_P) 1181ev_loop_destroy (EV_P)
690{ 1182{
691 loop_destroy (EV_A); 1183 loop_destroy (EV_A);
692 free (loop); 1184 ev_free (loop);
693} 1185}
694 1186
695void 1187void
696ev_loop_fork (EV_P) 1188ev_loop_fork (EV_P)
697{ 1189{
698 loop_fork (EV_A); 1190 postfork = 1;
699} 1191}
700 1192
701#endif 1193#endif
702 1194
703#if EV_MULTIPLICITY 1195#if EV_MULTIPLICITY
704struct ev_loop default_loop_struct;
705static struct ev_loop *default_loop;
706
707struct ev_loop * 1196struct ev_loop *
1197ev_default_loop_init (unsigned int flags)
708#else 1198#else
709static int default_loop;
710
711int 1199int
1200ev_default_loop (unsigned int flags)
712#endif 1201#endif
713ev_default_loop (int methods)
714{ 1202{
715 if (sigpipe [0] == sigpipe [1]) 1203 if (sigpipe [0] == sigpipe [1])
716 if (pipe (sigpipe)) 1204 if (pipe (sigpipe))
717 return 0; 1205 return 0;
718 1206
719 if (!default_loop) 1207 if (!ev_default_loop_ptr)
720 { 1208 {
721#if EV_MULTIPLICITY 1209#if EV_MULTIPLICITY
722 struct ev_loop *loop = default_loop = &default_loop_struct; 1210 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
723#else 1211#else
724 default_loop = 1; 1212 ev_default_loop_ptr = 1;
725#endif 1213#endif
726 1214
727 loop_init (EV_A_ methods); 1215 loop_init (EV_A_ flags);
728 1216
729 if (ev_method (EV_A)) 1217 if (ev_backend (EV_A))
730 { 1218 {
731 ev_watcher_init (&sigev, sigcb);
732 ev_set_priority (&sigev, EV_MAXPRI);
733 siginit (EV_A); 1219 siginit (EV_A);
734 1220
735#ifndef WIN32 1221#ifndef _WIN32
736 ev_signal_init (&childev, childcb, SIGCHLD); 1222 ev_signal_init (&childev, childcb, SIGCHLD);
737 ev_set_priority (&childev, EV_MAXPRI); 1223 ev_set_priority (&childev, EV_MAXPRI);
738 ev_signal_start (EV_A_ &childev); 1224 ev_signal_start (EV_A_ &childev);
739 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1225 ev_unref (EV_A); /* child watcher should not keep loop alive */
740#endif 1226#endif
741 } 1227 }
742 else 1228 else
743 default_loop = 0; 1229 ev_default_loop_ptr = 0;
744 } 1230 }
745 1231
746 return default_loop; 1232 return ev_default_loop_ptr;
747} 1233}
748 1234
749void 1235void
750ev_default_destroy (void) 1236ev_default_destroy (void)
751{ 1237{
752#if EV_MULTIPLICITY 1238#if EV_MULTIPLICITY
753 struct ev_loop *loop = default_loop; 1239 struct ev_loop *loop = ev_default_loop_ptr;
754#endif 1240#endif
755 1241
1242#ifndef _WIN32
756 ev_ref (EV_A); /* child watcher */ 1243 ev_ref (EV_A); /* child watcher */
757 ev_signal_stop (EV_A_ &childev); 1244 ev_signal_stop (EV_A_ &childev);
1245#endif
758 1246
759 ev_ref (EV_A); /* signal watcher */ 1247 ev_ref (EV_A); /* signal watcher */
760 ev_io_stop (EV_A_ &sigev); 1248 ev_io_stop (EV_A_ &sigev);
761 1249
762 close (sigpipe [0]); sigpipe [0] = 0; 1250 close (sigpipe [0]); sigpipe [0] = 0;
… …
767 1255
768void 1256void
769ev_default_fork (void) 1257ev_default_fork (void)
770{ 1258{
771#if EV_MULTIPLICITY 1259#if EV_MULTIPLICITY
772 struct ev_loop *loop = default_loop; 1260 struct ev_loop *loop = ev_default_loop_ptr;
773#endif 1261#endif
774 1262
775 loop_fork (EV_A); 1263 if (backend)
776 1264 postfork = 1;
777 ev_io_stop (EV_A_ &sigev);
778 close (sigpipe [0]);
779 close (sigpipe [1]);
780 pipe (sigpipe);
781
782 ev_ref (EV_A); /* signal watcher */
783 siginit (EV_A);
784} 1265}
785 1266
786/*****************************************************************************/ 1267/*****************************************************************************/
787 1268
788static void 1269void
1270ev_invoke (EV_P_ void *w, int revents)
1271{
1272 EV_CB_INVOKE ((W)w, revents);
1273}
1274
1275void inline_speed
789call_pending (EV_P) 1276call_pending (EV_P)
790{ 1277{
791 int pri; 1278 int pri;
792 1279
793 for (pri = NUMPRI; pri--; ) 1280 for (pri = NUMPRI; pri--; )
794 while (pendingcnt [pri]) 1281 while (pendingcnt [pri])
795 { 1282 {
796 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1283 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
797 1284
798 if (p->w) 1285 if (expect_true (p->w))
799 { 1286 {
1287 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1288
800 p->w->pending = 0; 1289 p->w->pending = 0;
801 1290 EV_CB_INVOKE (p->w, p->events);
802 (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
803 } 1291 }
804 } 1292 }
805} 1293}
806 1294
807static void 1295void inline_size
808timers_reify (EV_P) 1296timers_reify (EV_P)
809{ 1297{
810 while (timercnt && ((WT)timers [0])->at <= mn_now) 1298 while (timercnt && ((WT)timers [0])->at <= mn_now)
811 { 1299 {
812 struct ev_timer *w = timers [0]; 1300 ev_timer *w = (ev_timer *)timers [0];
813 1301
814 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1302 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
815 1303
816 /* first reschedule or stop timer */ 1304 /* first reschedule or stop timer */
817 if (w->repeat) 1305 if (w->repeat)
818 { 1306 {
819 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1307 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1308
820 ((WT)w)->at = mn_now + w->repeat; 1309 ((WT)w)->at += w->repeat;
1310 if (((WT)w)->at < mn_now)
1311 ((WT)w)->at = mn_now;
1312
821 downheap ((WT *)timers, timercnt, 0); 1313 downheap (timers, timercnt, 0);
822 } 1314 }
823 else 1315 else
824 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
825 1317
826 event (EV_A_ (W)w, EV_TIMEOUT); 1318 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
827 } 1319 }
828} 1320}
829 1321
830static void 1322#if EV_PERIODIC_ENABLE
1323void inline_size
831periodics_reify (EV_P) 1324periodics_reify (EV_P)
832{ 1325{
833 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1326 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
834 { 1327 {
835 struct ev_periodic *w = periodics [0]; 1328 ev_periodic *w = (ev_periodic *)periodics [0];
836 1329
837 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1330 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
838 1331
839 /* first reschedule or stop timer */ 1332 /* first reschedule or stop timer */
840 if (w->interval) 1333 if (w->reschedule_cb)
841 { 1334 {
1335 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1336 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1337 downheap (periodics, periodiccnt, 0);
1338 }
1339 else if (w->interval)
1340 {
842 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1341 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1342 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
843 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1343 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
844 downheap ((WT *)periodics, periodiccnt, 0); 1344 downheap (periodics, periodiccnt, 0);
845 } 1345 }
846 else 1346 else
847 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1347 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
848 1348
849 event (EV_A_ (W)w, EV_PERIODIC); 1349 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
850 } 1350 }
851} 1351}
852 1352
853static void 1353static void noinline
854periodics_reschedule (EV_P) 1354periodics_reschedule (EV_P)
855{ 1355{
856 int i; 1356 int i;
857 1357
858 /* adjust periodics after time jump */ 1358 /* adjust periodics after time jump */
859 for (i = 0; i < periodiccnt; ++i) 1359 for (i = 0; i < periodiccnt; ++i)
860 { 1360 {
861 struct ev_periodic *w = periodics [i]; 1361 ev_periodic *w = (ev_periodic *)periodics [i];
862 1362
1363 if (w->reschedule_cb)
1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
863 if (w->interval) 1365 else if (w->interval)
1366 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1367 }
1368
1369 /* now rebuild the heap */
1370 for (i = periodiccnt >> 1; i--; )
1371 downheap (periodics, periodiccnt, i);
1372}
1373#endif
1374
1375#if EV_IDLE_ENABLE
1376void inline_size
1377idle_reify (EV_P)
1378{
1379 if (expect_false (idleall))
1380 {
1381 int pri;
1382
1383 for (pri = NUMPRI; pri--; )
864 { 1384 {
865 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1385 if (pendingcnt [pri])
1386 break;
866 1387
867 if (fabs (diff) >= 1e-4) 1388 if (idlecnt [pri])
868 { 1389 {
869 ev_periodic_stop (EV_A_ w); 1390 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
870 ev_periodic_start (EV_A_ w); 1391 break;
871
872 i = 0; /* restart loop, inefficient, but time jumps should be rare */
873 } 1392 }
874 } 1393 }
875 } 1394 }
876} 1395}
1396#endif
877 1397
878inline int 1398void inline_speed
879time_update_monotonic (EV_P) 1399time_update (EV_P_ ev_tstamp max_block)
880{
881 mn_now = get_clock ();
882
883 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
884 {
885 rt_now = rtmn_diff + mn_now;
886 return 0;
887 }
888 else
889 {
890 now_floor = mn_now;
891 rt_now = ev_time ();
892 return 1;
893 }
894}
895
896static void
897time_update (EV_P)
898{ 1400{
899 int i; 1401 int i;
900 1402
901#if EV_USE_MONOTONIC 1403#if EV_USE_MONOTONIC
902 if (expect_true (have_monotonic)) 1404 if (expect_true (have_monotonic))
903 { 1405 {
904 if (time_update_monotonic (EV_A)) 1406 ev_tstamp odiff = rtmn_diff;
1407
1408 mn_now = get_clock ();
1409
1410 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1411 /* interpolate in the meantime */
1412 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
905 { 1413 {
906 ev_tstamp odiff = rtmn_diff; 1414 ev_rt_now = rtmn_diff + mn_now;
1415 return;
1416 }
907 1417
1418 now_floor = mn_now;
1419 ev_rt_now = ev_time ();
1420
908 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1421 /* loop a few times, before making important decisions.
1422 * on the choice of "4": one iteration isn't enough,
1423 * in case we get preempted during the calls to
1424 * ev_time and get_clock. a second call is almost guaranteed
1425 * to succeed in that case, though. and looping a few more times
1426 * doesn't hurt either as we only do this on time-jumps or
1427 * in the unlikely event of having been preempted here.
1428 */
1429 for (i = 4; --i; )
909 { 1430 {
910 rtmn_diff = rt_now - mn_now; 1431 rtmn_diff = ev_rt_now - mn_now;
911 1432
912 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1433 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
913 return; /* all is well */ 1434 return; /* all is well */
914 1435
915 rt_now = ev_time (); 1436 ev_rt_now = ev_time ();
916 mn_now = get_clock (); 1437 mn_now = get_clock ();
917 now_floor = mn_now; 1438 now_floor = mn_now;
918 } 1439 }
919 1440
1441# if EV_PERIODIC_ENABLE
1442 periodics_reschedule (EV_A);
1443# endif
1444 /* no timer adjustment, as the monotonic clock doesn't jump */
1445 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1446 }
1447 else
1448#endif
1449 {
1450 ev_rt_now = ev_time ();
1451
1452 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1453 {
1454#if EV_PERIODIC_ENABLE
920 periodics_reschedule (EV_A); 1455 periodics_reschedule (EV_A);
921 /* no timer adjustment, as the monotonic clock doesn't jump */ 1456#endif
922 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1457 /* adjust timers. this is easy, as the offset is the same for all of them */
1458 for (i = 0; i < timercnt; ++i)
1459 ((WT)timers [i])->at += ev_rt_now - mn_now;
923 } 1460 }
924 }
925 else
926#endif
927 {
928 rt_now = ev_time ();
929 1461
930 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
931 {
932 periodics_reschedule (EV_A);
933
934 /* adjust timers. this is easy, as the offset is the same for all */
935 for (i = 0; i < timercnt; ++i)
936 ((WT)timers [i])->at += rt_now - mn_now;
937 }
938
939 mn_now = rt_now; 1462 mn_now = ev_rt_now;
940 } 1463 }
941} 1464}
942 1465
943void 1466void
944ev_ref (EV_P) 1467ev_ref (EV_P)
… …
955static int loop_done; 1478static int loop_done;
956 1479
957void 1480void
958ev_loop (EV_P_ int flags) 1481ev_loop (EV_P_ int flags)
959{ 1482{
960 double block;
961 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1483 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1484 ? EVUNLOOP_ONE
1485 : EVUNLOOP_CANCEL;
1486
1487 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
962 1488
963 do 1489 do
964 { 1490 {
1491#ifndef _WIN32
1492 if (expect_false (curpid)) /* penalise the forking check even more */
1493 if (expect_false (getpid () != curpid))
1494 {
1495 curpid = getpid ();
1496 postfork = 1;
1497 }
1498#endif
1499
1500#if EV_FORK_ENABLE
1501 /* we might have forked, so queue fork handlers */
1502 if (expect_false (postfork))
1503 if (forkcnt)
1504 {
1505 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1506 call_pending (EV_A);
1507 }
1508#endif
1509
965 /* queue check watchers (and execute them) */ 1510 /* queue prepare watchers (and execute them) */
966 if (expect_false (preparecnt)) 1511 if (expect_false (preparecnt))
967 { 1512 {
968 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1513 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
969 call_pending (EV_A); 1514 call_pending (EV_A);
970 } 1515 }
971 1516
1517 if (expect_false (!activecnt))
1518 break;
1519
1520 /* we might have forked, so reify kernel state if necessary */
1521 if (expect_false (postfork))
1522 loop_fork (EV_A);
1523
972 /* update fd-related kernel structures */ 1524 /* update fd-related kernel structures */
973 fd_reify (EV_A); 1525 fd_reify (EV_A);
974 1526
975 /* calculate blocking time */ 1527 /* calculate blocking time */
1528 {
1529 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.;
976 1531
977 /* we only need this for !monotonic clockor timers, but as we basically 1532 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
978 always have timers, we just calculate it always */
979#if EV_USE_MONOTONIC
980 if (expect_true (have_monotonic))
981 time_update_monotonic (EV_A);
982 else
983#endif
984 { 1533 {
985 rt_now = ev_time (); 1534 /* update time to cancel out callback processing overhead */
986 mn_now = rt_now; 1535 time_update (EV_A_ 1e100);
987 }
988 1536
989 if (flags & EVLOOP_NONBLOCK || idlecnt)
990 block = 0.;
991 else
992 {
993 block = MAX_BLOCKTIME; 1537 waittime = MAX_BLOCKTIME;
994 1538
995 if (timercnt) 1539 if (timercnt)
996 { 1540 {
997 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
998 if (block > to) block = to; 1542 if (waittime > to) waittime = to;
999 } 1543 }
1000 1544
1545#if EV_PERIODIC_ENABLE
1001 if (periodiccnt) 1546 if (periodiccnt)
1002 { 1547 {
1003 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1548 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1004 if (block > to) block = to; 1549 if (waittime > to) waittime = to;
1005 } 1550 }
1551#endif
1006 1552
1007 if (block < 0.) block = 0.; 1553 if (expect_false (waittime < timeout_blocktime))
1554 waittime = timeout_blocktime;
1555
1556 sleeptime = waittime - backend_fudge;
1557
1558 if (expect_true (sleeptime > io_blocktime))
1559 sleeptime = io_blocktime;
1560
1561 if (sleeptime)
1562 {
1563 ev_sleep (sleeptime);
1564 waittime -= sleeptime;
1565 }
1008 } 1566 }
1009 1567
1010 method_poll (EV_A_ block); 1568 ++loop_count;
1569 backend_poll (EV_A_ waittime);
1011 1570
1012 /* update rt_now, do magic */ 1571 /* update ev_rt_now, do magic */
1013 time_update (EV_A); 1572 time_update (EV_A_ waittime + sleeptime);
1573 }
1014 1574
1015 /* queue pending timers and reschedule them */ 1575 /* queue pending timers and reschedule them */
1016 timers_reify (EV_A); /* relative timers called last */ 1576 timers_reify (EV_A); /* relative timers called last */
1577#if EV_PERIODIC_ENABLE
1017 periodics_reify (EV_A); /* absolute timers called first */ 1578 periodics_reify (EV_A); /* absolute timers called first */
1579#endif
1018 1580
1581#if EV_IDLE_ENABLE
1019 /* queue idle watchers unless io or timers are pending */ 1582 /* queue idle watchers unless other events are pending */
1020 if (!pendingcnt) 1583 idle_reify (EV_A);
1021 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1584#endif
1022 1585
1023 /* queue check watchers, to be executed first */ 1586 /* queue check watchers, to be executed first */
1024 if (checkcnt) 1587 if (expect_false (checkcnt))
1025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1588 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1026 1589
1027 call_pending (EV_A); 1590 call_pending (EV_A);
1591
1028 } 1592 }
1029 while (activecnt && !loop_done); 1593 while (expect_true (activecnt && !loop_done));
1030 1594
1031 if (loop_done != 2) 1595 if (loop_done == EVUNLOOP_ONE)
1032 loop_done = 0; 1596 loop_done = EVUNLOOP_CANCEL;
1033} 1597}
1034 1598
1035void 1599void
1036ev_unloop (EV_P_ int how) 1600ev_unloop (EV_P_ int how)
1037{ 1601{
1038 loop_done = how; 1602 loop_done = how;
1039} 1603}
1040 1604
1041/*****************************************************************************/ 1605/*****************************************************************************/
1042 1606
1043inline void 1607void inline_size
1044wlist_add (WL *head, WL elem) 1608wlist_add (WL *head, WL elem)
1045{ 1609{
1046 elem->next = *head; 1610 elem->next = *head;
1047 *head = elem; 1611 *head = elem;
1048} 1612}
1049 1613
1050inline void 1614void inline_size
1051wlist_del (WL *head, WL elem) 1615wlist_del (WL *head, WL elem)
1052{ 1616{
1053 while (*head) 1617 while (*head)
1054 { 1618 {
1055 if (*head == elem) 1619 if (*head == elem)
… …
1060 1624
1061 head = &(*head)->next; 1625 head = &(*head)->next;
1062 } 1626 }
1063} 1627}
1064 1628
1065inline void 1629void inline_speed
1066ev_clear_pending (EV_P_ W w) 1630clear_pending (EV_P_ W w)
1067{ 1631{
1068 if (w->pending) 1632 if (w->pending)
1069 { 1633 {
1070 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1634 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1071 w->pending = 0; 1635 w->pending = 0;
1072 } 1636 }
1073} 1637}
1074 1638
1075inline void 1639int
1640ev_clear_pending (EV_P_ void *w)
1641{
1642 W w_ = (W)w;
1643 int pending = w_->pending;
1644
1645 if (expect_true (pending))
1646 {
1647 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1648 w_->pending = 0;
1649 p->w = 0;
1650 return p->events;
1651 }
1652 else
1653 return 0;
1654}
1655
1656void inline_size
1657pri_adjust (EV_P_ W w)
1658{
1659 int pri = w->priority;
1660 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1661 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1662 w->priority = pri;
1663}
1664
1665void inline_speed
1076ev_start (EV_P_ W w, int active) 1666ev_start (EV_P_ W w, int active)
1077{ 1667{
1078 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1668 pri_adjust (EV_A_ w);
1079 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1080
1081 w->active = active; 1669 w->active = active;
1082 ev_ref (EV_A); 1670 ev_ref (EV_A);
1083} 1671}
1084 1672
1085inline void 1673void inline_size
1086ev_stop (EV_P_ W w) 1674ev_stop (EV_P_ W w)
1087{ 1675{
1088 ev_unref (EV_A); 1676 ev_unref (EV_A);
1089 w->active = 0; 1677 w->active = 0;
1090} 1678}
1091 1679
1092/*****************************************************************************/ 1680/*****************************************************************************/
1093 1681
1094void 1682void noinline
1095ev_io_start (EV_P_ struct ev_io *w) 1683ev_io_start (EV_P_ ev_io *w)
1096{ 1684{
1097 int fd = w->fd; 1685 int fd = w->fd;
1098 1686
1099 if (ev_is_active (w)) 1687 if (expect_false (ev_is_active (w)))
1100 return; 1688 return;
1101 1689
1102 assert (("ev_io_start called with negative fd", fd >= 0)); 1690 assert (("ev_io_start called with negative fd", fd >= 0));
1103 1691
1104 ev_start (EV_A_ (W)w, 1); 1692 ev_start (EV_A_ (W)w, 1);
1105 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1693 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1106 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1694 wlist_add (&anfds[fd].head, (WL)w);
1107 1695
1108 fd_change (EV_A_ fd); 1696 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1697 w->events &= ~EV_IOFDSET;
1109} 1698}
1110 1699
1111void 1700void noinline
1112ev_io_stop (EV_P_ struct ev_io *w) 1701ev_io_stop (EV_P_ ev_io *w)
1113{ 1702{
1114 ev_clear_pending (EV_A_ (W)w); 1703 clear_pending (EV_A_ (W)w);
1115 if (!ev_is_active (w)) 1704 if (expect_false (!ev_is_active (w)))
1116 return; 1705 return;
1117 1706
1707 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1708
1118 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1709 wlist_del (&anfds[w->fd].head, (WL)w);
1119 ev_stop (EV_A_ (W)w); 1710 ev_stop (EV_A_ (W)w);
1120 1711
1121 fd_change (EV_A_ w->fd); 1712 fd_change (EV_A_ w->fd, 1);
1122} 1713}
1123 1714
1124void 1715void noinline
1125ev_timer_start (EV_P_ struct ev_timer *w) 1716ev_timer_start (EV_P_ ev_timer *w)
1126{ 1717{
1127 if (ev_is_active (w)) 1718 if (expect_false (ev_is_active (w)))
1128 return; 1719 return;
1129 1720
1130 ((WT)w)->at += mn_now; 1721 ((WT)w)->at += mn_now;
1131 1722
1132 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1723 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1133 1724
1134 ev_start (EV_A_ (W)w, ++timercnt); 1725 ev_start (EV_A_ (W)w, ++timercnt);
1135 array_needsize (timers, timermax, timercnt, ); 1726 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1136 timers [timercnt - 1] = w; 1727 timers [timercnt - 1] = (WT)w;
1137 upheap ((WT *)timers, timercnt - 1); 1728 upheap (timers, timercnt - 1);
1138 1729
1139 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1730 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1140} 1731}
1141 1732
1142void 1733void noinline
1143ev_timer_stop (EV_P_ struct ev_timer *w) 1734ev_timer_stop (EV_P_ ev_timer *w)
1144{ 1735{
1145 ev_clear_pending (EV_A_ (W)w); 1736 clear_pending (EV_A_ (W)w);
1146 if (!ev_is_active (w)) 1737 if (expect_false (!ev_is_active (w)))
1147 return; 1738 return;
1148 1739
1149 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1740 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1150 1741
1151 if (((W)w)->active < timercnt--) 1742 {
1743 int active = ((W)w)->active;
1744
1745 if (expect_true (--active < --timercnt))
1152 { 1746 {
1153 timers [((W)w)->active - 1] = timers [timercnt]; 1747 timers [active] = timers [timercnt];
1154 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1748 adjustheap (timers, timercnt, active);
1155 } 1749 }
1750 }
1156 1751
1157 ((WT)w)->at = w->repeat; 1752 ((WT)w)->at -= mn_now;
1158 1753
1159 ev_stop (EV_A_ (W)w); 1754 ev_stop (EV_A_ (W)w);
1160} 1755}
1161 1756
1162void 1757void noinline
1163ev_timer_again (EV_P_ struct ev_timer *w) 1758ev_timer_again (EV_P_ ev_timer *w)
1164{ 1759{
1165 if (ev_is_active (w)) 1760 if (ev_is_active (w))
1166 { 1761 {
1167 if (w->repeat) 1762 if (w->repeat)
1168 { 1763 {
1169 ((WT)w)->at = mn_now + w->repeat; 1764 ((WT)w)->at = mn_now + w->repeat;
1170 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1765 adjustheap (timers, timercnt, ((W)w)->active - 1);
1171 } 1766 }
1172 else 1767 else
1173 ev_timer_stop (EV_A_ w); 1768 ev_timer_stop (EV_A_ w);
1174 } 1769 }
1175 else if (w->repeat) 1770 else if (w->repeat)
1771 {
1772 w->at = w->repeat;
1176 ev_timer_start (EV_A_ w); 1773 ev_timer_start (EV_A_ w);
1774 }
1177} 1775}
1178 1776
1179void 1777#if EV_PERIODIC_ENABLE
1778void noinline
1180ev_periodic_start (EV_P_ struct ev_periodic *w) 1779ev_periodic_start (EV_P_ ev_periodic *w)
1181{ 1780{
1182 if (ev_is_active (w)) 1781 if (expect_false (ev_is_active (w)))
1183 return; 1782 return;
1184 1783
1784 if (w->reschedule_cb)
1785 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1786 else if (w->interval)
1787 {
1185 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1788 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1186
1187 /* this formula differs from the one in periodic_reify because we do not always round up */ 1789 /* this formula differs from the one in periodic_reify because we do not always round up */
1188 if (w->interval)
1189 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1790 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1791 }
1792 else
1793 ((WT)w)->at = w->offset;
1190 1794
1191 ev_start (EV_A_ (W)w, ++periodiccnt); 1795 ev_start (EV_A_ (W)w, ++periodiccnt);
1192 array_needsize (periodics, periodicmax, periodiccnt, ); 1796 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1193 periodics [periodiccnt - 1] = w; 1797 periodics [periodiccnt - 1] = (WT)w;
1194 upheap ((WT *)periodics, periodiccnt - 1); 1798 upheap (periodics, periodiccnt - 1);
1195 1799
1196 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1800 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1197} 1801}
1198 1802
1199void 1803void noinline
1200ev_periodic_stop (EV_P_ struct ev_periodic *w) 1804ev_periodic_stop (EV_P_ ev_periodic *w)
1201{ 1805{
1202 ev_clear_pending (EV_A_ (W)w); 1806 clear_pending (EV_A_ (W)w);
1203 if (!ev_is_active (w)) 1807 if (expect_false (!ev_is_active (w)))
1204 return; 1808 return;
1205 1809
1206 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1810 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1207 1811
1208 if (((W)w)->active < periodiccnt--) 1812 {
1813 int active = ((W)w)->active;
1814
1815 if (expect_true (--active < --periodiccnt))
1209 { 1816 {
1210 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1817 periodics [active] = periodics [periodiccnt];
1211 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1818 adjustheap (periodics, periodiccnt, active);
1212 } 1819 }
1820 }
1213 1821
1214 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1215} 1823}
1216 1824
1217void 1825void noinline
1218ev_idle_start (EV_P_ struct ev_idle *w) 1826ev_periodic_again (EV_P_ ev_periodic *w)
1219{ 1827{
1220 if (ev_is_active (w)) 1828 /* TODO: use adjustheap and recalculation */
1221 return;
1222
1223 ev_start (EV_A_ (W)w, ++idlecnt);
1224 array_needsize (idles, idlemax, idlecnt, );
1225 idles [idlecnt - 1] = w;
1226}
1227
1228void
1229ev_idle_stop (EV_P_ struct ev_idle *w)
1230{
1231 ev_clear_pending (EV_A_ (W)w);
1232 if (ev_is_active (w))
1233 return;
1234
1235 idles [((W)w)->active - 1] = idles [--idlecnt];
1236 ev_stop (EV_A_ (W)w); 1829 ev_periodic_stop (EV_A_ w);
1830 ev_periodic_start (EV_A_ w);
1237} 1831}
1238 1832#endif
1239void
1240ev_prepare_start (EV_P_ struct ev_prepare *w)
1241{
1242 if (ev_is_active (w))
1243 return;
1244
1245 ev_start (EV_A_ (W)w, ++preparecnt);
1246 array_needsize (prepares, preparemax, preparecnt, );
1247 prepares [preparecnt - 1] = w;
1248}
1249
1250void
1251ev_prepare_stop (EV_P_ struct ev_prepare *w)
1252{
1253 ev_clear_pending (EV_A_ (W)w);
1254 if (ev_is_active (w))
1255 return;
1256
1257 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1258 ev_stop (EV_A_ (W)w);
1259}
1260
1261void
1262ev_check_start (EV_P_ struct ev_check *w)
1263{
1264 if (ev_is_active (w))
1265 return;
1266
1267 ev_start (EV_A_ (W)w, ++checkcnt);
1268 array_needsize (checks, checkmax, checkcnt, );
1269 checks [checkcnt - 1] = w;
1270}
1271
1272void
1273ev_check_stop (EV_P_ struct ev_check *w)
1274{
1275 ev_clear_pending (EV_A_ (W)w);
1276 if (ev_is_active (w))
1277 return;
1278
1279 checks [((W)w)->active - 1] = checks [--checkcnt];
1280 ev_stop (EV_A_ (W)w);
1281}
1282 1833
1283#ifndef SA_RESTART 1834#ifndef SA_RESTART
1284# define SA_RESTART 0 1835# define SA_RESTART 0
1285#endif 1836#endif
1286 1837
1287void 1838void noinline
1288ev_signal_start (EV_P_ struct ev_signal *w) 1839ev_signal_start (EV_P_ ev_signal *w)
1289{ 1840{
1290#if EV_MULTIPLICITY 1841#if EV_MULTIPLICITY
1291 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1842 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1292#endif 1843#endif
1293 if (ev_is_active (w)) 1844 if (expect_false (ev_is_active (w)))
1294 return; 1845 return;
1295 1846
1296 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1847 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1297 1848
1849 {
1850#ifndef _WIN32
1851 sigset_t full, prev;
1852 sigfillset (&full);
1853 sigprocmask (SIG_SETMASK, &full, &prev);
1854#endif
1855
1856 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1857
1858#ifndef _WIN32
1859 sigprocmask (SIG_SETMASK, &prev, 0);
1860#endif
1861 }
1862
1298 ev_start (EV_A_ (W)w, 1); 1863 ev_start (EV_A_ (W)w, 1);
1299 array_needsize (signals, signalmax, w->signum, signals_init);
1300 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1864 wlist_add (&signals [w->signum - 1].head, (WL)w);
1301 1865
1302 if (!((WL)w)->next) 1866 if (!((WL)w)->next)
1303 { 1867 {
1868#if _WIN32
1869 signal (w->signum, sighandler);
1870#else
1304 struct sigaction sa; 1871 struct sigaction sa;
1305 sa.sa_handler = sighandler; 1872 sa.sa_handler = sighandler;
1306 sigfillset (&sa.sa_mask); 1873 sigfillset (&sa.sa_mask);
1307 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1874 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1308 sigaction (w->signum, &sa, 0); 1875 sigaction (w->signum, &sa, 0);
1876#endif
1309 } 1877 }
1310} 1878}
1311 1879
1312void 1880void noinline
1313ev_signal_stop (EV_P_ struct ev_signal *w) 1881ev_signal_stop (EV_P_ ev_signal *w)
1314{ 1882{
1315 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1884 if (expect_false (!ev_is_active (w)))
1317 return; 1885 return;
1318 1886
1319 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1887 wlist_del (&signals [w->signum - 1].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1888 ev_stop (EV_A_ (W)w);
1321 1889
1322 if (!signals [w->signum - 1].head) 1890 if (!signals [w->signum - 1].head)
1323 signal (w->signum, SIG_DFL); 1891 signal (w->signum, SIG_DFL);
1324} 1892}
1325 1893
1326void 1894void
1327ev_child_start (EV_P_ struct ev_child *w) 1895ev_child_start (EV_P_ ev_child *w)
1328{ 1896{
1329#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1330 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1898 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1331#endif 1899#endif
1332 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1333 return; 1901 return;
1334 1902
1335 ev_start (EV_A_ (W)w, 1); 1903 ev_start (EV_A_ (W)w, 1);
1336 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1904 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1337} 1905}
1338 1906
1339void 1907void
1340ev_child_stop (EV_P_ struct ev_child *w) 1908ev_child_stop (EV_P_ ev_child *w)
1341{ 1909{
1342 ev_clear_pending (EV_A_ (W)w); 1910 clear_pending (EV_A_ (W)w);
1343 if (ev_is_active (w)) 1911 if (expect_false (!ev_is_active (w)))
1344 return; 1912 return;
1345 1913
1346 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1914 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1347 ev_stop (EV_A_ (W)w); 1915 ev_stop (EV_A_ (W)w);
1348} 1916}
1349 1917
1918#if EV_STAT_ENABLE
1919
1920# ifdef _WIN32
1921# undef lstat
1922# define lstat(a,b) _stati64 (a,b)
1923# endif
1924
1925#define DEF_STAT_INTERVAL 5.0074891
1926#define MIN_STAT_INTERVAL 0.1074891
1927
1928static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1929
1930#if EV_USE_INOTIFY
1931# define EV_INOTIFY_BUFSIZE 8192
1932
1933static void noinline
1934infy_add (EV_P_ ev_stat *w)
1935{
1936 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);
1937
1938 if (w->wd < 0)
1939 {
1940 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1941
1942 /* monitor some parent directory for speedup hints */
1943 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1944 {
1945 char path [4096];
1946 strcpy (path, w->path);
1947
1948 do
1949 {
1950 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1951 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1952
1953 char *pend = strrchr (path, '/');
1954
1955 if (!pend)
1956 break; /* whoops, no '/', complain to your admin */
1957
1958 *pend = 0;
1959 w->wd = inotify_add_watch (fs_fd, path, mask);
1960 }
1961 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1962 }
1963 }
1964 else
1965 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1966
1967 if (w->wd >= 0)
1968 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1969}
1970
1971static void noinline
1972infy_del (EV_P_ ev_stat *w)
1973{
1974 int slot;
1975 int wd = w->wd;
1976
1977 if (wd < 0)
1978 return;
1979
1980 w->wd = -2;
1981 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1982 wlist_del (&fs_hash [slot].head, (WL)w);
1983
1984 /* remove this watcher, if others are watching it, they will rearm */
1985 inotify_rm_watch (fs_fd, wd);
1986}
1987
1988static void noinline
1989infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1990{
1991 if (slot < 0)
1992 /* overflow, need to check for all hahs slots */
1993 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1994 infy_wd (EV_A_ slot, wd, ev);
1995 else
1996 {
1997 WL w_;
1998
1999 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2000 {
2001 ev_stat *w = (ev_stat *)w_;
2002 w_ = w_->next; /* lets us remove this watcher and all before it */
2003
2004 if (w->wd == wd || wd == -1)
2005 {
2006 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2007 {
2008 w->wd = -1;
2009 infy_add (EV_A_ w); /* re-add, no matter what */
2010 }
2011
2012 stat_timer_cb (EV_A_ &w->timer, 0);
2013 }
2014 }
2015 }
2016}
2017
2018static void
2019infy_cb (EV_P_ ev_io *w, int revents)
2020{
2021 char buf [EV_INOTIFY_BUFSIZE];
2022 struct inotify_event *ev = (struct inotify_event *)buf;
2023 int ofs;
2024 int len = read (fs_fd, buf, sizeof (buf));
2025
2026 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2027 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2028}
2029
2030void inline_size
2031infy_init (EV_P)
2032{
2033 if (fs_fd != -2)
2034 return;
2035
2036 fs_fd = inotify_init ();
2037
2038 if (fs_fd >= 0)
2039 {
2040 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2041 ev_set_priority (&fs_w, EV_MAXPRI);
2042 ev_io_start (EV_A_ &fs_w);
2043 }
2044}
2045
2046void inline_size
2047infy_fork (EV_P)
2048{
2049 int slot;
2050
2051 if (fs_fd < 0)
2052 return;
2053
2054 close (fs_fd);
2055 fs_fd = inotify_init ();
2056
2057 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2058 {
2059 WL w_ = fs_hash [slot].head;
2060 fs_hash [slot].head = 0;
2061
2062 while (w_)
2063 {
2064 ev_stat *w = (ev_stat *)w_;
2065 w_ = w_->next; /* lets us add this watcher */
2066
2067 w->wd = -1;
2068
2069 if (fs_fd >= 0)
2070 infy_add (EV_A_ w); /* re-add, no matter what */
2071 else
2072 ev_timer_start (EV_A_ &w->timer);
2073 }
2074
2075 }
2076}
2077
2078#endif
2079
2080void
2081ev_stat_stat (EV_P_ ev_stat *w)
2082{
2083 if (lstat (w->path, &w->attr) < 0)
2084 w->attr.st_nlink = 0;
2085 else if (!w->attr.st_nlink)
2086 w->attr.st_nlink = 1;
2087}
2088
2089static void noinline
2090stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2091{
2092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2093
2094 /* we copy this here each the time so that */
2095 /* prev has the old value when the callback gets invoked */
2096 w->prev = w->attr;
2097 ev_stat_stat (EV_A_ w);
2098
2099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2100 if (
2101 w->prev.st_dev != w->attr.st_dev
2102 || w->prev.st_ino != w->attr.st_ino
2103 || w->prev.st_mode != w->attr.st_mode
2104 || w->prev.st_nlink != w->attr.st_nlink
2105 || w->prev.st_uid != w->attr.st_uid
2106 || w->prev.st_gid != w->attr.st_gid
2107 || w->prev.st_rdev != w->attr.st_rdev
2108 || w->prev.st_size != w->attr.st_size
2109 || w->prev.st_atime != w->attr.st_atime
2110 || w->prev.st_mtime != w->attr.st_mtime
2111 || w->prev.st_ctime != w->attr.st_ctime
2112 ) {
2113 #if EV_USE_INOTIFY
2114 infy_del (EV_A_ w);
2115 infy_add (EV_A_ w);
2116 ev_stat_stat (EV_A_ w); /* avoid race... */
2117 #endif
2118
2119 ev_feed_event (EV_A_ w, EV_STAT);
2120 }
2121}
2122
2123void
2124ev_stat_start (EV_P_ ev_stat *w)
2125{
2126 if (expect_false (ev_is_active (w)))
2127 return;
2128
2129 /* since we use memcmp, we need to clear any padding data etc. */
2130 memset (&w->prev, 0, sizeof (ev_statdata));
2131 memset (&w->attr, 0, sizeof (ev_statdata));
2132
2133 ev_stat_stat (EV_A_ w);
2134
2135 if (w->interval < MIN_STAT_INTERVAL)
2136 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2137
2138 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2139 ev_set_priority (&w->timer, ev_priority (w));
2140
2141#if EV_USE_INOTIFY
2142 infy_init (EV_A);
2143
2144 if (fs_fd >= 0)
2145 infy_add (EV_A_ w);
2146 else
2147#endif
2148 ev_timer_start (EV_A_ &w->timer);
2149
2150 ev_start (EV_A_ (W)w, 1);
2151}
2152
2153void
2154ev_stat_stop (EV_P_ ev_stat *w)
2155{
2156 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w)))
2158 return;
2159
2160#if EV_USE_INOTIFY
2161 infy_del (EV_A_ w);
2162#endif
2163 ev_timer_stop (EV_A_ &w->timer);
2164
2165 ev_stop (EV_A_ (W)w);
2166}
2167#endif
2168
2169#if EV_IDLE_ENABLE
2170void
2171ev_idle_start (EV_P_ ev_idle *w)
2172{
2173 if (expect_false (ev_is_active (w)))
2174 return;
2175
2176 pri_adjust (EV_A_ (W)w);
2177
2178 {
2179 int active = ++idlecnt [ABSPRI (w)];
2180
2181 ++idleall;
2182 ev_start (EV_A_ (W)w, active);
2183
2184 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2185 idles [ABSPRI (w)][active - 1] = w;
2186 }
2187}
2188
2189void
2190ev_idle_stop (EV_P_ ev_idle *w)
2191{
2192 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w)))
2194 return;
2195
2196 {
2197 int active = ((W)w)->active;
2198
2199 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2200 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2201
2202 ev_stop (EV_A_ (W)w);
2203 --idleall;
2204 }
2205}
2206#endif
2207
2208void
2209ev_prepare_start (EV_P_ ev_prepare *w)
2210{
2211 if (expect_false (ev_is_active (w)))
2212 return;
2213
2214 ev_start (EV_A_ (W)w, ++preparecnt);
2215 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2216 prepares [preparecnt - 1] = w;
2217}
2218
2219void
2220ev_prepare_stop (EV_P_ ev_prepare *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226 {
2227 int active = ((W)w)->active;
2228 prepares [active - 1] = prepares [--preparecnt];
2229 ((W)prepares [active - 1])->active = active;
2230 }
2231
2232 ev_stop (EV_A_ (W)w);
2233}
2234
2235void
2236ev_check_start (EV_P_ ev_check *w)
2237{
2238 if (expect_false (ev_is_active (w)))
2239 return;
2240
2241 ev_start (EV_A_ (W)w, ++checkcnt);
2242 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2243 checks [checkcnt - 1] = w;
2244}
2245
2246void
2247ev_check_stop (EV_P_ ev_check *w)
2248{
2249 clear_pending (EV_A_ (W)w);
2250 if (expect_false (!ev_is_active (w)))
2251 return;
2252
2253 {
2254 int active = ((W)w)->active;
2255 checks [active - 1] = checks [--checkcnt];
2256 ((W)checks [active - 1])->active = active;
2257 }
2258
2259 ev_stop (EV_A_ (W)w);
2260}
2261
2262#if EV_EMBED_ENABLE
2263void noinline
2264ev_embed_sweep (EV_P_ ev_embed *w)
2265{
2266 ev_loop (w->other, EVLOOP_NONBLOCK);
2267}
2268
2269static void
2270embed_io_cb (EV_P_ ev_io *io, int revents)
2271{
2272 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2273
2274 if (ev_cb (w))
2275 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2276 else
2277 ev_loop (w->other, EVLOOP_NONBLOCK);
2278}
2279
2280static void
2281embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2282{
2283 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2284
2285 {
2286 struct ev_loop *loop = w->other;
2287
2288 while (fdchangecnt)
2289 {
2290 fd_reify (EV_A);
2291 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2292 }
2293 }
2294}
2295
2296#if 0
2297static void
2298embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2299{
2300 ev_idle_stop (EV_A_ idle);
2301}
2302#endif
2303
2304void
2305ev_embed_start (EV_P_ ev_embed *w)
2306{
2307 if (expect_false (ev_is_active (w)))
2308 return;
2309
2310 {
2311 struct ev_loop *loop = w->other;
2312 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2313 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2314 }
2315
2316 ev_set_priority (&w->io, ev_priority (w));
2317 ev_io_start (EV_A_ &w->io);
2318
2319 ev_prepare_init (&w->prepare, embed_prepare_cb);
2320 ev_set_priority (&w->prepare, EV_MINPRI);
2321 ev_prepare_start (EV_A_ &w->prepare);
2322
2323 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2324
2325 ev_start (EV_A_ (W)w, 1);
2326}
2327
2328void
2329ev_embed_stop (EV_P_ ev_embed *w)
2330{
2331 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w)))
2333 return;
2334
2335 ev_io_stop (EV_A_ &w->io);
2336 ev_prepare_stop (EV_A_ &w->prepare);
2337
2338 ev_stop (EV_A_ (W)w);
2339}
2340#endif
2341
2342#if EV_FORK_ENABLE
2343void
2344ev_fork_start (EV_P_ ev_fork *w)
2345{
2346 if (expect_false (ev_is_active (w)))
2347 return;
2348
2349 ev_start (EV_A_ (W)w, ++forkcnt);
2350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2351 forks [forkcnt - 1] = w;
2352}
2353
2354void
2355ev_fork_stop (EV_P_ ev_fork *w)
2356{
2357 clear_pending (EV_A_ (W)w);
2358 if (expect_false (!ev_is_active (w)))
2359 return;
2360
2361 {
2362 int active = ((W)w)->active;
2363 forks [active - 1] = forks [--forkcnt];
2364 ((W)forks [active - 1])->active = active;
2365 }
2366
2367 ev_stop (EV_A_ (W)w);
2368}
2369#endif
2370
1350/*****************************************************************************/ 2371/*****************************************************************************/
1351 2372
1352struct ev_once 2373struct ev_once
1353{ 2374{
1354 struct ev_io io; 2375 ev_io io;
1355 struct ev_timer to; 2376 ev_timer to;
1356 void (*cb)(int revents, void *arg); 2377 void (*cb)(int revents, void *arg);
1357 void *arg; 2378 void *arg;
1358}; 2379};
1359 2380
1360static void 2381static void
… …
1363 void (*cb)(int revents, void *arg) = once->cb; 2384 void (*cb)(int revents, void *arg) = once->cb;
1364 void *arg = once->arg; 2385 void *arg = once->arg;
1365 2386
1366 ev_io_stop (EV_A_ &once->io); 2387 ev_io_stop (EV_A_ &once->io);
1367 ev_timer_stop (EV_A_ &once->to); 2388 ev_timer_stop (EV_A_ &once->to);
1368 free (once); 2389 ev_free (once);
1369 2390
1370 cb (revents, arg); 2391 cb (revents, arg);
1371} 2392}
1372 2393
1373static void 2394static void
1374once_cb_io (EV_P_ struct ev_io *w, int revents) 2395once_cb_io (EV_P_ ev_io *w, int revents)
1375{ 2396{
1376 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2397 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1377} 2398}
1378 2399
1379static void 2400static void
1380once_cb_to (EV_P_ struct ev_timer *w, int revents) 2401once_cb_to (EV_P_ ev_timer *w, int revents)
1381{ 2402{
1382 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2403 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1383} 2404}
1384 2405
1385void 2406void
1386ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2407ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1387{ 2408{
1388 struct ev_once *once = malloc (sizeof (struct ev_once)); 2409 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1389 2410
1390 if (!once) 2411 if (expect_false (!once))
2412 {
1391 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2413 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1392 else 2414 return;
1393 { 2415 }
2416
1394 once->cb = cb; 2417 once->cb = cb;
1395 once->arg = arg; 2418 once->arg = arg;
1396 2419
1397 ev_watcher_init (&once->io, once_cb_io); 2420 ev_init (&once->io, once_cb_io);
1398 if (fd >= 0) 2421 if (fd >= 0)
1399 { 2422 {
1400 ev_io_set (&once->io, fd, events); 2423 ev_io_set (&once->io, fd, events);
1401 ev_io_start (EV_A_ &once->io); 2424 ev_io_start (EV_A_ &once->io);
1402 } 2425 }
1403 2426
1404 ev_watcher_init (&once->to, once_cb_to); 2427 ev_init (&once->to, once_cb_to);
1405 if (timeout >= 0.) 2428 if (timeout >= 0.)
1406 { 2429 {
1407 ev_timer_set (&once->to, timeout, 0.); 2430 ev_timer_set (&once->to, timeout, 0.);
1408 ev_timer_start (EV_A_ &once->to); 2431 ev_timer_start (EV_A_ &once->to);
1409 }
1410 } 2432 }
1411} 2433}
1412 2434
2435#if EV_MULTIPLICITY
2436 #include "ev_wrap.h"
2437#endif
2438
2439#ifdef __cplusplus
2440}
2441#endif
2442

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