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Comparing libev/ev.c (file contents):
Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC vs.
Revision 1.188 by root, Thu Dec 20 07:12:57 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
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
71#ifndef WIN32 129#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 130# include <sys/time.h>
74# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
75#endif 138# endif
139#endif
140
76/**/ 141/**/
77 142
78#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1 144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
80#endif 149#endif
81 150
82#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
84#endif 153#endif
85 154
86#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
88#endif 161#endif
89 162
90#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
92#endif 165#endif
93 166
94#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
96#endif 169#endif
97 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
98#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
99# ifdef WIN32 176# define EV_USE_INOTIFY 0
100# define EV_USE_WIN32 0 /* it does not exist, use select */ 177#endif
101# undef EV_USE_SELECT 178
102# define EV_USE_SELECT 1 179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
103# else 182# else
104# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
105# endif 184# endif
106#endif 185#endif
107 186
108#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
109# define EV_USE_REALTIME 1 188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
110#endif 193#endif
111 194
112/**/ 195/**/
113 196
114#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
119#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
122#endif 205#endif
123 206
207#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0
210#endif
211
212#if EV_USE_INOTIFY
213# include <sys/inotify.h>
214#endif
215
216#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h>
218#endif
219
124/**/ 220/**/
125 221
222/*
223 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding
226 * errors are against us.
227 * This value is good at least till the year 4000.
228 * Better solutions welcome.
229 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130 235
131#include "ev.h"
132
133#if __GNUC__ >= 3 236#if __GNUC__ >= 4
134# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 238# define noinline __attribute__ ((noinline))
136#else 239#else
137# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
138# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
139#endif 245#endif
140 246
141#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
142#define expect_true(expr) expect ((expr) != 0, 1) 248#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline
250
251#if EV_MINIMAL
252# define inline_speed static noinline
253#else
254# define inline_speed static inline
255#endif
143 256
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
147typedef struct ev_watcher *W; 263typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
150 266
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152 268
269#ifdef _WIN32
153#include "ev_win32.c" 270# include "ev_win32.c"
271#endif
154 272
155/*****************************************************************************/ 273/*****************************************************************************/
156 274
157static void (*syserr_cb)(const char *msg); 275static void (*syserr_cb)(const char *msg);
158 276
277void
159void ev_set_syserr_cb (void (*cb)(const char *msg)) 278ev_set_syserr_cb (void (*cb)(const char *msg))
160{ 279{
161 syserr_cb = cb; 280 syserr_cb = cb;
162} 281}
163 282
164static void 283static void noinline
165syserr (const char *msg) 284syserr (const char *msg)
166{ 285{
167 if (!msg) 286 if (!msg)
168 msg = "(libev) system error"; 287 msg = "(libev) system error";
169 288
… …
176 } 295 }
177} 296}
178 297
179static void *(*alloc)(void *ptr, long size); 298static void *(*alloc)(void *ptr, long size);
180 299
300void
181void ev_set_allocator (void *(*cb)(void *ptr, long size)) 301ev_set_allocator (void *(*cb)(void *ptr, long size))
182{ 302{
183 alloc = cb; 303 alloc = cb;
184} 304}
185 305
186static void * 306inline_speed void *
187ev_realloc (void *ptr, long size) 307ev_realloc (void *ptr, long size)
188{ 308{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190 310
191 if (!ptr && size) 311 if (!ptr && size)
… …
205typedef struct 325typedef struct
206{ 326{
207 WL head; 327 WL head;
208 unsigned char events; 328 unsigned char events;
209 unsigned char reify; 329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
210} ANFD; 333} ANFD;
211 334
212typedef struct 335typedef struct
213{ 336{
214 W w; 337 W w;
215 int events; 338 int events;
216} ANPENDING; 339} ANPENDING;
217 340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
218#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
219 349
220struct ev_loop 350 struct ev_loop
221{ 351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
222# define VAR(name,decl) decl; 354 #define VAR(name,decl) decl;
223# include "ev_vars.h" 355 #include "ev_vars.h"
224};
225# undef VAR 356 #undef VAR
357 };
226# include "ev_wrap.h" 358 #include "ev_wrap.h"
359
360 static struct ev_loop default_loop_struct;
361 struct ev_loop *ev_default_loop_ptr;
227 362
228#else 363#else
229 364
365 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 367 #include "ev_vars.h"
232# undef VAR 368 #undef VAR
369
370 static int ev_default_loop_ptr;
233 371
234#endif 372#endif
235 373
236/*****************************************************************************/ 374/*****************************************************************************/
237 375
238inline ev_tstamp 376ev_tstamp
239ev_time (void) 377ev_time (void)
240{ 378{
241#if EV_USE_REALTIME 379#if EV_USE_REALTIME
242 struct timespec ts; 380 struct timespec ts;
243 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
247 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
248 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
249#endif 387#endif
250} 388}
251 389
252inline ev_tstamp 390ev_tstamp inline_size
253get_clock (void) 391get_clock (void)
254{ 392{
255#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
256 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
257 { 395 {
… …
262#endif 400#endif
263 401
264 return ev_time (); 402 return ev_time ();
265} 403}
266 404
405#if EV_MULTIPLICITY
267ev_tstamp 406ev_tstamp
268ev_now (EV_P) 407ev_now (EV_P)
269{ 408{
270 return rt_now; 409 return ev_rt_now;
271} 410}
411#endif
272 412
273#define array_roundsize(type,n) ((n) | 4 & ~3) 413int inline_size
414array_nextsize (int elem, int cur, int cnt)
415{
416 int ncur = cur + 1;
417
418 do
419 ncur <<= 1;
420 while (cnt > ncur);
421
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096)
424 {
425 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
427 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem;
429 }
430
431 return ncur;
432}
433
434static noinline void *
435array_realloc (int elem, void *base, int *cur, int cnt)
436{
437 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur);
439}
274 440
275#define array_needsize(type,base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
277 { \ 443 { \
278 int newcnt = cur; \ 444 int ocur_ = (cur); \
279 do \ 445 (base) = (type *)array_realloc \
280 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
281 newcnt = array_roundsize (type, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
282 } \
283 while ((cnt) > newcnt); \
284 \
285 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286 init (base + cur, newcnt - cur); \
287 cur = newcnt; \
288 } 448 }
289 449
450#if 0
290#define array_slim(type,stem) \ 451#define array_slim(type,stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \ 453 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 } 457 }
297 458#endif
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302 459
303#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305 462
306/*****************************************************************************/ 463/*****************************************************************************/
307 464
308static void 465void noinline
466ev_feed_event (EV_P_ void *w, int revents)
467{
468 W w_ = (W)w;
469 int pri = ABSPRI (w_);
470
471 if (expect_false (w_->pending))
472 pendings [pri][w_->pending - 1].events |= revents;
473 else
474 {
475 w_->pending = ++pendingcnt [pri];
476 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
477 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents;
479 }
480}
481
482void inline_speed
483queue_events (EV_P_ W *events, int eventcnt, int type)
484{
485 int i;
486
487 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type);
489}
490
491/*****************************************************************************/
492
493void inline_size
309anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
310{ 495{
311 while (count--) 496 while (count--)
312 { 497 {
313 base->head = 0; 498 base->head = 0;
… …
316 501
317 ++base; 502 ++base;
318 } 503 }
319} 504}
320 505
321static void 506void inline_speed
322event (EV_P_ W w, int events)
323{
324 if (w->pending)
325 {
326 pendings [ABSPRI (w)][w->pending - 1].events |= events;
327 return;
328 }
329
330 w->pending = ++pendingcnt [ABSPRI (w)];
331 array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
332 pendings [ABSPRI (w)][w->pending - 1].w = w;
333 pendings [ABSPRI (w)][w->pending - 1].events = events;
334}
335
336static void
337queue_events (EV_P_ W *events, int eventcnt, int type)
338{
339 int i;
340
341 for (i = 0; i < eventcnt; ++i)
342 event (EV_A_ events [i], type);
343}
344
345static void
346fd_event (EV_P_ int fd, int events) 507fd_event (EV_P_ int fd, int revents)
347{ 508{
348 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
349 struct ev_io *w; 510 ev_io *w;
350 511
351 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
352 { 513 {
353 int ev = w->events & events; 514 int ev = w->events & revents;
354 515
355 if (ev) 516 if (ev)
356 event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
357 } 518 }
358} 519}
359 520
360/*****************************************************************************/ 521void
522ev_feed_fd_event (EV_P_ int fd, int revents)
523{
524 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents);
526}
361 527
362static void 528void inline_size
363fd_reify (EV_P) 529fd_reify (EV_P)
364{ 530{
365 int i; 531 int i;
366 532
367 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
368 { 534 {
369 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
370 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
371 struct ev_io *w; 537 ev_io *w;
372 538
373 int events = 0; 539 unsigned char events = 0;
374 540
375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
376 events |= w->events; 542 events |= (unsigned char)w->events;
377 543
544#if EV_SELECT_IS_WINSOCKET
545 if (events)
546 {
547 unsigned long argp;
548 anfd->handle = _get_osfhandle (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
550 }
551#endif
552
553 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
378 anfd->reify = 0; 557 anfd->reify = 0;
379
380 method_modify (EV_A_ fd, anfd->events, events);
381 anfd->events = events; 558 anfd->events = events;
559
560 if (o_events != events || o_reify & EV_IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events);
562 }
382 } 563 }
383 564
384 fdchangecnt = 0; 565 fdchangecnt = 0;
385} 566}
386 567
387static void 568void inline_size
388fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
389{ 570{
390 if (anfds [fd].reify) 571 unsigned char reify = anfds [fd].reify;
391 return;
392
393 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
394 573
574 if (expect_true (!reify))
575 {
395 ++fdchangecnt; 576 ++fdchangecnt;
396 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
398} 580}
399 581
400static void 582void inline_speed
401fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
402{ 584{
403 struct ev_io *w; 585 ev_io *w;
404 586
405 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
406 { 588 {
407 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
408 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
409 } 591 }
410} 592}
411 593
412static int 594int inline_size
413fd_valid (int fd) 595fd_valid (int fd)
414{ 596{
415#ifdef WIN32 597#ifdef _WIN32
416 return !!win32_get_osfhandle (fd); 598 return _get_osfhandle (fd) != -1;
417#else 599#else
418 return fcntl (fd, F_GETFD) != -1; 600 return fcntl (fd, F_GETFD) != -1;
419#endif 601#endif
420} 602}
421 603
422/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
423static void 605static void noinline
424fd_ebadf (EV_P) 606fd_ebadf (EV_P)
425{ 607{
426 int fd; 608 int fd;
427 609
428 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
… …
430 if (!fd_valid (fd) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
431 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
432} 614}
433 615
434/* called on ENOMEM in select/poll to kill some fds and retry */ 616/* called on ENOMEM in select/poll to kill some fds and retry */
435static void 617static void noinline
436fd_enomem (EV_P) 618fd_enomem (EV_P)
437{ 619{
438 int fd; 620 int fd;
439 621
440 for (fd = anfdmax; fd--; ) 622 for (fd = anfdmax; fd--; )
… …
443 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
444 return; 626 return;
445 } 627 }
446} 628}
447 629
448/* usually called after fork if method needs to re-arm all fds from scratch */ 630/* usually called after fork if backend needs to re-arm all fds from scratch */
449static void 631static void noinline
450fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
451{ 633{
452 int fd; 634 int fd;
453 635
454 /* this should be highly optimised to not do anything but set a flag */
455 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
456 if (anfds [fd].events) 637 if (anfds [fd].events)
457 { 638 {
458 anfds [fd].events = 0; 639 anfds [fd].events = 0;
459 fd_change (EV_A_ fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
460 } 641 }
461} 642}
462 643
463/*****************************************************************************/ 644/*****************************************************************************/
464 645
465static void 646void inline_speed
466upheap (WT *heap, int k) 647upheap (WT *heap, int k)
467{ 648{
468 WT w = heap [k]; 649 WT w = heap [k];
469 650
470 while (k && heap [k >> 1]->at > w->at) 651 while (k)
471 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
472 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
473 ((W)heap [k])->active = k + 1; 659 ((W)heap [k])->active = k + 1;
474 k >>= 1; 660 k = p;
475 } 661 }
476 662
477 heap [k] = w; 663 heap [k] = w;
478 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
479
480} 665}
481 666
482static void 667void inline_speed
483downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
484{ 669{
485 WT w = heap [k]; 670 WT w = heap [k];
486 671
487 while (k < (N >> 1)) 672 for (;;)
488 { 673 {
489 int j = k << 1; 674 int c = (k << 1) + 1;
490 675
491 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
492 ++j;
493
494 if (w->at <= heap [j]->at)
495 break; 677 break;
496 678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
497 heap [k] = heap [j]; 685 heap [k] = heap [c];
498 ((W)heap [k])->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
499 k = j; 688 k = c;
500 } 689 }
501 690
502 heap [k] = w; 691 heap [k] = w;
503 ((W)heap [k])->active = k + 1; 692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k)
697{
698 upheap (heap, k);
699 downheap (heap, N, k);
504} 700}
505 701
506/*****************************************************************************/ 702/*****************************************************************************/
507 703
508typedef struct 704typedef struct
… …
514static ANSIG *signals; 710static ANSIG *signals;
515static int signalmax; 711static int signalmax;
516 712
517static int sigpipe [2]; 713static int sigpipe [2];
518static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
519static struct ev_io sigev; 715static ev_io sigev;
520 716
521static void 717void inline_size
522signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
523{ 719{
524 while (count--) 720 while (count--)
525 { 721 {
526 base->head = 0; 722 base->head = 0;
… …
531} 727}
532 728
533static void 729static void
534sighandler (int signum) 730sighandler (int signum)
535{ 731{
536#if WIN32 732#if _WIN32
537 signal (signum, sighandler); 733 signal (signum, sighandler);
538#endif 734#endif
539 735
540 signals [signum - 1].gotsig = 1; 736 signals [signum - 1].gotsig = 1;
541 737
542 if (!gotsig) 738 if (!gotsig)
543 { 739 {
544 int old_errno = errno; 740 int old_errno = errno;
545 gotsig = 1; 741 gotsig = 1;
546#ifdef WIN32
547 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548#else
549 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
550#endif
551 errno = old_errno; 743 errno = old_errno;
552 } 744 }
553} 745}
554 746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
555static void 767static void
556sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
557{ 769{
558 WL w;
559 int signum; 770 int signum;
560 771
561#ifdef WIN32
562 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563#else
564 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
565#endif
566 gotsig = 0; 773 gotsig = 0;
567 774
568 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
569 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
570 { 777 ev_feed_signal_event (EV_A_ signum + 1);
571 signals [signum].gotsig = 0;
572
573 for (w = signals [signum].head; w; w = w->next)
574 event (EV_A_ (W)w, EV_SIGNAL);
575 }
576} 778}
577 779
578static void 780void inline_speed
781fd_intern (int fd)
782{
783#ifdef _WIN32
784 int arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif
790}
791
792static void noinline
579siginit (EV_P) 793siginit (EV_P)
580{ 794{
581#ifndef WIN32 795 fd_intern (sigpipe [0]);
582 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 796 fd_intern (sigpipe [1]);
583 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585 /* rather than sort out wether we really need nb, set it */
586 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588#endif
589 797
590 ev_io_set (&sigev, sigpipe [0], EV_READ); 798 ev_io_set (&sigev, sigpipe [0], EV_READ);
591 ev_io_start (EV_A_ &sigev); 799 ev_io_start (EV_A_ &sigev);
592 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
593} 801}
594 802
595/*****************************************************************************/ 803/*****************************************************************************/
596 804
597static struct ev_child *childs [PID_HASHSIZE]; 805static WL childs [EV_PID_HASHSIZE];
598 806
599#ifndef WIN32 807#ifndef _WIN32
600 808
601static struct ev_signal childev; 809static ev_signal childev;
810
811void inline_speed
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813{
814 ev_child *w;
815
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
817 if (w->pid == pid || !w->pid)
818 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
820 w->rpid = pid;
821 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 }
824}
602 825
603#ifndef WCONTINUED 826#ifndef WCONTINUED
604# define WCONTINUED 0 827# define WCONTINUED 0
605#endif 828#endif
606 829
607static void 830static void
608child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
609{
610 struct ev_child *w;
611
612 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
613 if (w->pid == pid || !w->pid)
614 {
615 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616 w->rpid = pid;
617 w->rstatus = status;
618 event (EV_A_ (W)w, EV_CHILD);
619 }
620}
621
622static void
623childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
624{ 832{
625 int pid, status; 833 int pid, status;
626 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
629 /* make sure we are called again until all childs have been reaped */ 842 /* make sure we are called again until all childs have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */
630 event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631 845
632 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
633 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634 }
635} 849}
636 850
637#endif 851#endif
638 852
639/*****************************************************************************/ 853/*****************************************************************************/
640 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
641#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
642# include "ev_kqueue.c" 859# include "ev_kqueue.c"
643#endif 860#endif
644#if EV_USE_EPOLL 861#if EV_USE_EPOLL
645# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
662{ 879{
663 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
664} 881}
665 882
666/* return true if we are running with elevated privileges and should ignore env variables */ 883/* return true if we are running with elevated privileges and should ignore env variables */
667static int 884int inline_size
668enable_secure (void) 885enable_secure (void)
669{ 886{
670#ifdef WIN32 887#ifdef _WIN32
671 return 0; 888 return 0;
672#else 889#else
673 return getuid () != geteuid () 890 return getuid () != geteuid ()
674 || getgid () != getegid (); 891 || getgid () != getegid ();
675#endif 892#endif
676} 893}
677 894
678int 895unsigned int
679ev_method (EV_P) 896ev_supported_backends (void)
680{ 897{
681 return method; 898 unsigned int flags = 0;
682}
683 899
684static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685loop_init (EV_P_ int methods) 901 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
902 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
903 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
904 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
905
906 return flags;
907}
908
909unsigned int
910ev_recommended_backends (void)
686{ 911{
687 if (!method) 912 unsigned int flags = ev_supported_backends ();
913
914#ifndef __NetBSD__
915 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE;
918#endif
919#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation
921 flags &= ~EVBACKEND_POLL;
922#endif
923
924 return flags;
925}
926
927unsigned int
928ev_embeddable_backends (void)
929{
930 return EVBACKEND_EPOLL
931 | EVBACKEND_KQUEUE
932 | EVBACKEND_PORT;
933}
934
935unsigned int
936ev_backend (EV_P)
937{
938 return backend;
939}
940
941unsigned int
942ev_loop_count (EV_P)
943{
944 return loop_count;
945}
946
947static void noinline
948loop_init (EV_P_ unsigned int flags)
949{
950 if (!backend)
688 { 951 {
689#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
690 { 953 {
691 struct timespec ts; 954 struct timespec ts;
692 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693 have_monotonic = 1; 956 have_monotonic = 1;
694 } 957 }
695#endif 958#endif
696 959
697 rt_now = ev_time (); 960 ev_rt_now = ev_time ();
698 mn_now = get_clock (); 961 mn_now = get_clock ();
699 now_floor = mn_now; 962 now_floor = mn_now;
700 rtmn_diff = rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
701 964
702 if (methods == EVMETHOD_AUTO) 965 /* pid check not overridable via env */
703 if (!enable_secure () && getenv ("LIBEV_METHODS")) 966#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid ();
969#endif
970
971 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS"))
704 methods = atoi (getenv ("LIBEV_METHODS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
705 else
706 methods = EVMETHOD_ANY;
707 975
708 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
709#if EV_USE_WIN32 981#if EV_USE_INOTIFY
710 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 982 fs_fd = -2;
983#endif
984
985#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711#endif 987#endif
712#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
713 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714#endif 990#endif
715#if EV_USE_EPOLL 991#if EV_USE_EPOLL
716 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717#endif 993#endif
718#if EV_USE_POLL 994#if EV_USE_POLL
719 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720#endif 996#endif
721#if EV_USE_SELECT 997#if EV_USE_SELECT
722 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723#endif 999#endif
724 1000
725 ev_watcher_init (&sigev, sigcb); 1001 ev_init (&sigev, sigcb);
726 ev_set_priority (&sigev, EV_MAXPRI); 1002 ev_set_priority (&sigev, EV_MAXPRI);
727 } 1003 }
728} 1004}
729 1005
730void 1006static void noinline
731loop_destroy (EV_P) 1007loop_destroy (EV_P)
732{ 1008{
733 int i; 1009 int i;
734 1010
735#if EV_USE_WIN32 1011#if EV_USE_INOTIFY
736 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1012 if (fs_fd >= 0)
1013 close (fs_fd);
1014#endif
1015
1016 if (backend_fd >= 0)
1017 close (backend_fd);
1018
1019#if EV_USE_PORT
1020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737#endif 1021#endif
738#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
739 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740#endif 1024#endif
741#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
742 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743#endif 1027#endif
744#if EV_USE_POLL 1028#if EV_USE_POLL
745 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746#endif 1030#endif
747#if EV_USE_SELECT 1031#if EV_USE_SELECT
748 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749#endif 1033#endif
750 1034
751 for (i = NUMPRI; i--; ) 1035 for (i = NUMPRI; i--; )
1036 {
752 array_free (pending, [i]); 1037 array_free (pending, [i]);
1038#if EV_IDLE_ENABLE
1039 array_free (idle, [i]);
1040#endif
1041 }
1042
1043 ev_free (anfds); anfdmax = 0;
753 1044
754 /* have to use the microsoft-never-gets-it-right macro */ 1045 /* have to use the microsoft-never-gets-it-right macro */
755 array_free_microshit (fdchange); 1046 array_free (fdchange, EMPTY);
756 array_free_microshit (timer); 1047 array_free (timer, EMPTY);
757 array_free_microshit (periodic); 1048#if EV_PERIODIC_ENABLE
758 array_free_microshit (idle); 1049 array_free (periodic, EMPTY);
759 array_free_microshit (prepare); 1050#endif
760 array_free_microshit (check); 1051#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY);
1053#endif
1054 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY);
761 1056
762 method = 0; 1057 backend = 0;
763} 1058}
764 1059
765static void 1060void inline_size infy_fork (EV_P);
1061
1062void inline_size
766loop_fork (EV_P) 1063loop_fork (EV_P)
767{ 1064{
1065#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif
1068#if EV_USE_KQUEUE
1069 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1070#endif
768#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1072 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770#endif 1073#endif
771#if EV_USE_KQUEUE 1074#if EV_USE_INOTIFY
772 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1075 infy_fork (EV_A);
773#endif 1076#endif
774 1077
775 if (ev_is_active (&sigev)) 1078 if (ev_is_active (&sigev))
776 { 1079 {
777 /* default loop */ 1080 /* default loop */
… …
790 postfork = 0; 1093 postfork = 0;
791} 1094}
792 1095
793#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
794struct ev_loop * 1097struct ev_loop *
795ev_loop_new (int methods) 1098ev_loop_new (unsigned int flags)
796{ 1099{
797 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798 1101
799 memset (loop, 0, sizeof (struct ev_loop)); 1102 memset (loop, 0, sizeof (struct ev_loop));
800 1103
801 loop_init (EV_A_ methods); 1104 loop_init (EV_A_ flags);
802 1105
803 if (ev_method (EV_A)) 1106 if (ev_backend (EV_A))
804 return loop; 1107 return loop;
805 1108
806 return 0; 1109 return 0;
807} 1110}
808 1111
… …
820} 1123}
821 1124
822#endif 1125#endif
823 1126
824#if EV_MULTIPLICITY 1127#if EV_MULTIPLICITY
825struct ev_loop default_loop_struct;
826static struct ev_loop *default_loop;
827
828struct ev_loop * 1128struct ev_loop *
1129ev_default_loop_init (unsigned int flags)
829#else 1130#else
830static int default_loop;
831
832int 1131int
1132ev_default_loop (unsigned int flags)
833#endif 1133#endif
834ev_default_loop (int methods)
835{ 1134{
836 if (sigpipe [0] == sigpipe [1]) 1135 if (sigpipe [0] == sigpipe [1])
837 if (pipe (sigpipe)) 1136 if (pipe (sigpipe))
838 return 0; 1137 return 0;
839 1138
840 if (!default_loop) 1139 if (!ev_default_loop_ptr)
841 { 1140 {
842#if EV_MULTIPLICITY 1141#if EV_MULTIPLICITY
843 struct ev_loop *loop = default_loop = &default_loop_struct; 1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844#else 1143#else
845 default_loop = 1; 1144 ev_default_loop_ptr = 1;
846#endif 1145#endif
847 1146
848 loop_init (EV_A_ methods); 1147 loop_init (EV_A_ flags);
849 1148
850 if (ev_method (EV_A)) 1149 if (ev_backend (EV_A))
851 { 1150 {
852 siginit (EV_A); 1151 siginit (EV_A);
853 1152
854#ifndef WIN32 1153#ifndef _WIN32
855 ev_signal_init (&childev, childcb, SIGCHLD); 1154 ev_signal_init (&childev, childcb, SIGCHLD);
856 ev_set_priority (&childev, EV_MAXPRI); 1155 ev_set_priority (&childev, EV_MAXPRI);
857 ev_signal_start (EV_A_ &childev); 1156 ev_signal_start (EV_A_ &childev);
858 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1157 ev_unref (EV_A); /* child watcher should not keep loop alive */
859#endif 1158#endif
860 } 1159 }
861 else 1160 else
862 default_loop = 0; 1161 ev_default_loop_ptr = 0;
863 } 1162 }
864 1163
865 return default_loop; 1164 return ev_default_loop_ptr;
866} 1165}
867 1166
868void 1167void
869ev_default_destroy (void) 1168ev_default_destroy (void)
870{ 1169{
871#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
872 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
873#endif 1172#endif
874 1173
875#ifndef WIN32 1174#ifndef _WIN32
876 ev_ref (EV_A); /* child watcher */ 1175 ev_ref (EV_A); /* child watcher */
877 ev_signal_stop (EV_A_ &childev); 1176 ev_signal_stop (EV_A_ &childev);
878#endif 1177#endif
879 1178
880 ev_ref (EV_A); /* signal watcher */ 1179 ev_ref (EV_A); /* signal watcher */
… …
888 1187
889void 1188void
890ev_default_fork (void) 1189ev_default_fork (void)
891{ 1190{
892#if EV_MULTIPLICITY 1191#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop; 1192 struct ev_loop *loop = ev_default_loop_ptr;
894#endif 1193#endif
895 1194
896 if (method) 1195 if (backend)
897 postfork = 1; 1196 postfork = 1;
898} 1197}
899 1198
900/*****************************************************************************/ 1199/*****************************************************************************/
901 1200
902static void 1201void
1202ev_invoke (EV_P_ void *w, int revents)
1203{
1204 EV_CB_INVOKE ((W)w, revents);
1205}
1206
1207void inline_speed
903call_pending (EV_P) 1208call_pending (EV_P)
904{ 1209{
905 int pri; 1210 int pri;
906 1211
907 for (pri = NUMPRI; pri--; ) 1212 for (pri = NUMPRI; pri--; )
908 while (pendingcnt [pri]) 1213 while (pendingcnt [pri])
909 { 1214 {
910 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
911 1216
912 if (p->w) 1217 if (expect_true (p->w))
913 { 1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
914 p->w->pending = 0; 1221 p->w->pending = 0;
915 p->w->cb (EV_A_ p->w, p->events); 1222 EV_CB_INVOKE (p->w, p->events);
916 } 1223 }
917 } 1224 }
918} 1225}
919 1226
920static void 1227void inline_size
921timers_reify (EV_P) 1228timers_reify (EV_P)
922{ 1229{
923 while (timercnt && ((WT)timers [0])->at <= mn_now) 1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
924 { 1231 {
925 struct ev_timer *w = timers [0]; 1232 ev_timer *w = (ev_timer *)timers [0];
926 1233
927 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
928 1235
929 /* first reschedule or stop timer */ 1236 /* first reschedule or stop timer */
930 if (w->repeat) 1237 if (w->repeat)
931 { 1238 {
932 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
933 ((WT)w)->at = mn_now + w->repeat; 1241 ((WT)w)->at += w->repeat;
1242 if (((WT)w)->at < mn_now)
1243 ((WT)w)->at = mn_now;
1244
934 downheap ((WT *)timers, timercnt, 0); 1245 downheap (timers, timercnt, 0);
935 } 1246 }
936 else 1247 else
937 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
938 1249
939 event (EV_A_ (W)w, EV_TIMEOUT); 1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
940 } 1251 }
941} 1252}
942 1253
943static void 1254#if EV_PERIODIC_ENABLE
1255void inline_size
944periodics_reify (EV_P) 1256periodics_reify (EV_P)
945{ 1257{
946 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
947 { 1259 {
948 struct ev_periodic *w = periodics [0]; 1260 ev_periodic *w = (ev_periodic *)periodics [0];
949 1261
950 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
951 1263
952 /* first reschedule or stop timer */ 1264 /* first reschedule or stop timer */
953 if (w->interval) 1265 if (w->reschedule_cb)
954 { 1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
955 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
956 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
957 downheap ((WT *)periodics, periodiccnt, 0); 1276 downheap (periodics, periodiccnt, 0);
958 } 1277 }
959 else 1278 else
960 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
961 1280
962 event (EV_A_ (W)w, EV_PERIODIC); 1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
963 } 1282 }
964} 1283}
965 1284
966static void 1285static void noinline
967periodics_reschedule (EV_P) 1286periodics_reschedule (EV_P)
968{ 1287{
969 int i; 1288 int i;
970 1289
971 /* adjust periodics after time jump */ 1290 /* adjust periodics after time jump */
972 for (i = 0; i < periodiccnt; ++i) 1291 for (i = 0; i < periodiccnt; ++i)
973 { 1292 {
974 struct ev_periodic *w = periodics [i]; 1293 ev_periodic *w = (ev_periodic *)periodics [i];
975 1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
976 if (w->interval) 1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306
1307#if EV_IDLE_ENABLE
1308void inline_size
1309idle_reify (EV_P)
1310{
1311 if (expect_false (idleall))
1312 {
1313 int pri;
1314
1315 for (pri = NUMPRI; pri--; )
977 { 1316 {
978 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1317 if (pendingcnt [pri])
1318 break;
979 1319
980 if (fabs (diff) >= 1e-4) 1320 if (idlecnt [pri])
981 { 1321 {
982 ev_periodic_stop (EV_A_ w); 1322 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
983 ev_periodic_start (EV_A_ w); 1323 break;
984
985 i = 0; /* restart loop, inefficient, but time jumps should be rare */
986 } 1324 }
987 } 1325 }
988 } 1326 }
989} 1327}
1328#endif
990 1329
991inline int 1330void inline_speed
992time_update_monotonic (EV_P) 1331time_update (EV_P_ ev_tstamp max_block)
993{
994 mn_now = get_clock ();
995
996 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
997 {
998 rt_now = rtmn_diff + mn_now;
999 return 0;
1000 }
1001 else
1002 {
1003 now_floor = mn_now;
1004 rt_now = ev_time ();
1005 return 1;
1006 }
1007}
1008
1009static void
1010time_update (EV_P)
1011{ 1332{
1012 int i; 1333 int i;
1013 1334
1014#if EV_USE_MONOTONIC 1335#if EV_USE_MONOTONIC
1015 if (expect_true (have_monotonic)) 1336 if (expect_true (have_monotonic))
1016 { 1337 {
1017 if (time_update_monotonic (EV_A)) 1338 ev_tstamp odiff = rtmn_diff;
1339
1340 mn_now = get_clock ();
1341
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1343 /* interpolate in the meantime */
1344 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1018 { 1345 {
1019 ev_tstamp odiff = rtmn_diff; 1346 ev_rt_now = rtmn_diff + mn_now;
1347 return;
1348 }
1020 1349
1350 now_floor = mn_now;
1351 ev_rt_now = ev_time ();
1352
1021 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1353 /* loop a few times, before making important decisions.
1354 * on the choice of "4": one iteration isn't enough,
1355 * in case we get preempted during the calls to
1356 * ev_time and get_clock. a second call is almost guaranteed
1357 * to succeed in that case, though. and looping a few more times
1358 * doesn't hurt either as we only do this on time-jumps or
1359 * in the unlikely event of having been preempted here.
1360 */
1361 for (i = 4; --i; )
1022 { 1362 {
1023 rtmn_diff = rt_now - mn_now; 1363 rtmn_diff = ev_rt_now - mn_now;
1024 1364
1025 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1026 return; /* all is well */ 1366 return; /* all is well */
1027 1367
1028 rt_now = ev_time (); 1368 ev_rt_now = ev_time ();
1029 mn_now = get_clock (); 1369 mn_now = get_clock ();
1030 now_floor = mn_now; 1370 now_floor = mn_now;
1031 } 1371 }
1032 1372
1373# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A);
1375# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 }
1379 else
1380#endif
1381 {
1382 ev_rt_now = ev_time ();
1383
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 {
1386#if EV_PERIODIC_ENABLE
1033 periodics_reschedule (EV_A); 1387 periodics_reschedule (EV_A);
1034 /* no timer adjustment, as the monotonic clock doesn't jump */ 1388#endif
1035 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
1036 } 1392 }
1037 }
1038 else
1039#endif
1040 {
1041 rt_now = ev_time ();
1042 1393
1043 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1044 {
1045 periodics_reschedule (EV_A);
1046
1047 /* adjust timers. this is easy, as the offset is the same for all */
1048 for (i = 0; i < timercnt; ++i)
1049 ((WT)timers [i])->at += rt_now - mn_now;
1050 }
1051
1052 mn_now = rt_now; 1394 mn_now = ev_rt_now;
1053 } 1395 }
1054} 1396}
1055 1397
1056void 1398void
1057ev_ref (EV_P) 1399ev_ref (EV_P)
… …
1068static int loop_done; 1410static int loop_done;
1069 1411
1070void 1412void
1071ev_loop (EV_P_ int flags) 1413ev_loop (EV_P_ int flags)
1072{ 1414{
1073 double block;
1074 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1416 ? EVUNLOOP_ONE
1417 : EVUNLOOP_CANCEL;
1418
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1075 1420
1076 do 1421 do
1077 { 1422 {
1423#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid))
1426 {
1427 curpid = getpid ();
1428 postfork = 1;
1429 }
1430#endif
1431
1432#if EV_FORK_ENABLE
1433 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork))
1435 if (forkcnt)
1436 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A);
1439 }
1440#endif
1441
1078 /* queue check watchers (and execute them) */ 1442 /* queue prepare watchers (and execute them) */
1079 if (expect_false (preparecnt)) 1443 if (expect_false (preparecnt))
1080 { 1444 {
1081 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1082 call_pending (EV_A); 1446 call_pending (EV_A);
1083 } 1447 }
1084 1448
1449 if (expect_false (!activecnt))
1450 break;
1451
1085 /* we might have forked, so reify kernel state if necessary */ 1452 /* we might have forked, so reify kernel state if necessary */
1086 if (expect_false (postfork)) 1453 if (expect_false (postfork))
1087 loop_fork (EV_A); 1454 loop_fork (EV_A);
1088 1455
1089 /* update fd-related kernel structures */ 1456 /* update fd-related kernel structures */
1090 fd_reify (EV_A); 1457 fd_reify (EV_A);
1091 1458
1092 /* calculate blocking time */ 1459 /* calculate blocking time */
1460 {
1461 ev_tstamp block;
1093 1462
1094 /* we only need this for !monotonic clockor timers, but as we basically 1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1095 always have timers, we just calculate it always */ 1464 block = 0.; /* do not block at all */
1096#if EV_USE_MONOTONIC
1097 if (expect_true (have_monotonic))
1098 time_update_monotonic (EV_A);
1099 else 1465 else
1100#endif
1101 { 1466 {
1102 rt_now = ev_time (); 1467 /* update time to cancel out callback processing overhead */
1103 mn_now = rt_now; 1468 time_update (EV_A_ 1e100);
1104 }
1105 1469
1106 if (flags & EVLOOP_NONBLOCK || idlecnt)
1107 block = 0.;
1108 else
1109 {
1110 block = MAX_BLOCKTIME; 1470 block = MAX_BLOCKTIME;
1111 1471
1112 if (timercnt) 1472 if (timercnt)
1113 { 1473 {
1114 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1115 if (block > to) block = to; 1475 if (block > to) block = to;
1116 } 1476 }
1117 1477
1478#if EV_PERIODIC_ENABLE
1118 if (periodiccnt) 1479 if (periodiccnt)
1119 { 1480 {
1120 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1121 if (block > to) block = to; 1482 if (block > to) block = to;
1122 } 1483 }
1484#endif
1123 1485
1124 if (block < 0.) block = 0.; 1486 if (expect_false (block < 0.)) block = 0.;
1125 } 1487 }
1126 1488
1489 ++loop_count;
1127 method_poll (EV_A_ block); 1490 backend_poll (EV_A_ block);
1128 1491
1129 /* update rt_now, do magic */ 1492 /* update ev_rt_now, do magic */
1130 time_update (EV_A); 1493 time_update (EV_A_ block);
1494 }
1131 1495
1132 /* queue pending timers and reschedule them */ 1496 /* queue pending timers and reschedule them */
1133 timers_reify (EV_A); /* relative timers called last */ 1497 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE
1134 periodics_reify (EV_A); /* absolute timers called first */ 1499 periodics_reify (EV_A); /* absolute timers called first */
1500#endif
1135 1501
1502#if EV_IDLE_ENABLE
1136 /* queue idle watchers unless io or timers are pending */ 1503 /* queue idle watchers unless other events are pending */
1137 if (!pendingcnt) 1504 idle_reify (EV_A);
1138 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1505#endif
1139 1506
1140 /* queue check watchers, to be executed first */ 1507 /* queue check watchers, to be executed first */
1141 if (checkcnt) 1508 if (expect_false (checkcnt))
1142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1143 1510
1144 call_pending (EV_A); 1511 call_pending (EV_A);
1512
1145 } 1513 }
1146 while (activecnt && !loop_done); 1514 while (expect_true (activecnt && !loop_done));
1147 1515
1148 if (loop_done != 2) 1516 if (loop_done == EVUNLOOP_ONE)
1149 loop_done = 0; 1517 loop_done = EVUNLOOP_CANCEL;
1150} 1518}
1151 1519
1152void 1520void
1153ev_unloop (EV_P_ int how) 1521ev_unloop (EV_P_ int how)
1154{ 1522{
1155 loop_done = how; 1523 loop_done = how;
1156} 1524}
1157 1525
1158/*****************************************************************************/ 1526/*****************************************************************************/
1159 1527
1160inline void 1528void inline_size
1161wlist_add (WL *head, WL elem) 1529wlist_add (WL *head, WL elem)
1162{ 1530{
1163 elem->next = *head; 1531 elem->next = *head;
1164 *head = elem; 1532 *head = elem;
1165} 1533}
1166 1534
1167inline void 1535void inline_size
1168wlist_del (WL *head, WL elem) 1536wlist_del (WL *head, WL elem)
1169{ 1537{
1170 while (*head) 1538 while (*head)
1171 { 1539 {
1172 if (*head == elem) 1540 if (*head == elem)
… …
1177 1545
1178 head = &(*head)->next; 1546 head = &(*head)->next;
1179 } 1547 }
1180} 1548}
1181 1549
1182inline void 1550void inline_speed
1183ev_clear_pending (EV_P_ W w) 1551clear_pending (EV_P_ W w)
1184{ 1552{
1185 if (w->pending) 1553 if (w->pending)
1186 { 1554 {
1187 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1555 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1188 w->pending = 0; 1556 w->pending = 0;
1189 } 1557 }
1190} 1558}
1191 1559
1192inline void 1560int
1561ev_clear_pending (EV_P_ void *w)
1562{
1563 W w_ = (W)w;
1564 int pending = w_->pending;
1565
1566 if (expect_true (pending))
1567 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1569 w_->pending = 0;
1570 p->w = 0;
1571 return p->events;
1572 }
1573 else
1574 return 0;
1575}
1576
1577void inline_size
1578pri_adjust (EV_P_ W w)
1579{
1580 int pri = w->priority;
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri;
1584}
1585
1586void inline_speed
1193ev_start (EV_P_ W w, int active) 1587ev_start (EV_P_ W w, int active)
1194{ 1588{
1195 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1589 pri_adjust (EV_A_ w);
1196 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1197
1198 w->active = active; 1590 w->active = active;
1199 ev_ref (EV_A); 1591 ev_ref (EV_A);
1200} 1592}
1201 1593
1202inline void 1594void inline_size
1203ev_stop (EV_P_ W w) 1595ev_stop (EV_P_ W w)
1204{ 1596{
1205 ev_unref (EV_A); 1597 ev_unref (EV_A);
1206 w->active = 0; 1598 w->active = 0;
1207} 1599}
1208 1600
1209/*****************************************************************************/ 1601/*****************************************************************************/
1210 1602
1211void 1603void noinline
1212ev_io_start (EV_P_ struct ev_io *w) 1604ev_io_start (EV_P_ ev_io *w)
1213{ 1605{
1214 int fd = w->fd; 1606 int fd = w->fd;
1215 1607
1216 if (ev_is_active (w)) 1608 if (expect_false (ev_is_active (w)))
1217 return; 1609 return;
1218 1610
1219 assert (("ev_io_start called with negative fd", fd >= 0)); 1611 assert (("ev_io_start called with negative fd", fd >= 0));
1220 1612
1221 ev_start (EV_A_ (W)w, 1); 1613 ev_start (EV_A_ (W)w, 1);
1222 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1223 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1615 wlist_add (&anfds[fd].head, (WL)w);
1224 1616
1225 fd_change (EV_A_ fd); 1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET;
1226} 1619}
1227 1620
1228void 1621void noinline
1229ev_io_stop (EV_P_ struct ev_io *w) 1622ev_io_stop (EV_P_ ev_io *w)
1230{ 1623{
1231 ev_clear_pending (EV_A_ (W)w); 1624 clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w)) 1625 if (expect_false (!ev_is_active (w)))
1233 return; 1626 return;
1234 1627
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1629
1235 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1630 wlist_del (&anfds[w->fd].head, (WL)w);
1236 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1237 1632
1238 fd_change (EV_A_ w->fd); 1633 fd_change (EV_A_ w->fd, 1);
1239} 1634}
1240 1635
1241void 1636void noinline
1242ev_timer_start (EV_P_ struct ev_timer *w) 1637ev_timer_start (EV_P_ ev_timer *w)
1243{ 1638{
1244 if (ev_is_active (w)) 1639 if (expect_false (ev_is_active (w)))
1245 return; 1640 return;
1246 1641
1247 ((WT)w)->at += mn_now; 1642 ((WT)w)->at += mn_now;
1248 1643
1249 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1250 1645
1251 ev_start (EV_A_ (W)w, ++timercnt); 1646 ev_start (EV_A_ (W)w, ++timercnt);
1252 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1253 timers [timercnt - 1] = w; 1648 timers [timercnt - 1] = (WT)w;
1254 upheap ((WT *)timers, timercnt - 1); 1649 upheap (timers, timercnt - 1);
1255 1650
1256 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1257} 1652}
1258 1653
1259void 1654void noinline
1260ev_timer_stop (EV_P_ struct ev_timer *w) 1655ev_timer_stop (EV_P_ ev_timer *w)
1261{ 1656{
1262 ev_clear_pending (EV_A_ (W)w); 1657 clear_pending (EV_A_ (W)w);
1263 if (!ev_is_active (w)) 1658 if (expect_false (!ev_is_active (w)))
1264 return; 1659 return;
1265 1660
1266 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1267 1662
1268 if (((W)w)->active < timercnt--) 1663 {
1664 int active = ((W)w)->active;
1665
1666 if (expect_true (--active < --timercnt))
1269 { 1667 {
1270 timers [((W)w)->active - 1] = timers [timercnt]; 1668 timers [active] = timers [timercnt];
1271 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1669 adjustheap (timers, timercnt, active);
1272 } 1670 }
1671 }
1273 1672
1274 ((WT)w)->at = w->repeat; 1673 ((WT)w)->at -= mn_now;
1275 1674
1276 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1277} 1676}
1278 1677
1279void 1678void noinline
1280ev_timer_again (EV_P_ struct ev_timer *w) 1679ev_timer_again (EV_P_ ev_timer *w)
1281{ 1680{
1282 if (ev_is_active (w)) 1681 if (ev_is_active (w))
1283 { 1682 {
1284 if (w->repeat) 1683 if (w->repeat)
1285 { 1684 {
1286 ((WT)w)->at = mn_now + w->repeat; 1685 ((WT)w)->at = mn_now + w->repeat;
1287 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1686 adjustheap (timers, timercnt, ((W)w)->active - 1);
1288 } 1687 }
1289 else 1688 else
1290 ev_timer_stop (EV_A_ w); 1689 ev_timer_stop (EV_A_ w);
1291 } 1690 }
1292 else if (w->repeat) 1691 else if (w->repeat)
1692 {
1693 w->at = w->repeat;
1293 ev_timer_start (EV_A_ w); 1694 ev_timer_start (EV_A_ w);
1695 }
1294} 1696}
1295 1697
1296void 1698#if EV_PERIODIC_ENABLE
1699void noinline
1297ev_periodic_start (EV_P_ struct ev_periodic *w) 1700ev_periodic_start (EV_P_ ev_periodic *w)
1298{ 1701{
1299 if (ev_is_active (w)) 1702 if (expect_false (ev_is_active (w)))
1300 return; 1703 return;
1301 1704
1705 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval)
1708 {
1302 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1303
1304 /* this formula differs from the one in periodic_reify because we do not always round up */ 1710 /* this formula differs from the one in periodic_reify because we do not always round up */
1305 if (w->interval)
1306 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 }
1713 else
1714 ((WT)w)->at = w->offset;
1307 1715
1308 ev_start (EV_A_ (W)w, ++periodiccnt); 1716 ev_start (EV_A_ (W)w, ++periodiccnt);
1309 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1310 periodics [periodiccnt - 1] = w; 1718 periodics [periodiccnt - 1] = (WT)w;
1311 upheap ((WT *)periodics, periodiccnt - 1); 1719 upheap (periodics, periodiccnt - 1);
1312 1720
1313 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1314} 1722}
1315 1723
1316void 1724void noinline
1317ev_periodic_stop (EV_P_ struct ev_periodic *w) 1725ev_periodic_stop (EV_P_ ev_periodic *w)
1318{ 1726{
1319 ev_clear_pending (EV_A_ (W)w); 1727 clear_pending (EV_A_ (W)w);
1320 if (!ev_is_active (w)) 1728 if (expect_false (!ev_is_active (w)))
1321 return; 1729 return;
1322 1730
1323 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1324 1732
1325 if (((W)w)->active < periodiccnt--) 1733 {
1734 int active = ((W)w)->active;
1735
1736 if (expect_true (--active < --periodiccnt))
1326 { 1737 {
1327 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1738 periodics [active] = periodics [periodiccnt];
1328 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1739 adjustheap (periodics, periodiccnt, active);
1329 } 1740 }
1741 }
1330 1742
1331 ev_stop (EV_A_ (W)w); 1743 ev_stop (EV_A_ (W)w);
1332} 1744}
1333 1745
1334void 1746void noinline
1335ev_idle_start (EV_P_ struct ev_idle *w) 1747ev_periodic_again (EV_P_ ev_periodic *w)
1336{ 1748{
1337 if (ev_is_active (w)) 1749 /* TODO: use adjustheap and recalculation */
1338 return;
1339
1340 ev_start (EV_A_ (W)w, ++idlecnt);
1341 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1342 idles [idlecnt - 1] = w;
1343}
1344
1345void
1346ev_idle_stop (EV_P_ struct ev_idle *w)
1347{
1348 ev_clear_pending (EV_A_ (W)w);
1349 if (ev_is_active (w))
1350 return;
1351
1352 idles [((W)w)->active - 1] = idles [--idlecnt];
1353 ev_stop (EV_A_ (W)w); 1750 ev_periodic_stop (EV_A_ w);
1751 ev_periodic_start (EV_A_ w);
1354} 1752}
1355 1753#endif
1356void
1357ev_prepare_start (EV_P_ struct ev_prepare *w)
1358{
1359 if (ev_is_active (w))
1360 return;
1361
1362 ev_start (EV_A_ (W)w, ++preparecnt);
1363 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1364 prepares [preparecnt - 1] = w;
1365}
1366
1367void
1368ev_prepare_stop (EV_P_ struct ev_prepare *w)
1369{
1370 ev_clear_pending (EV_A_ (W)w);
1371 if (ev_is_active (w))
1372 return;
1373
1374 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1375 ev_stop (EV_A_ (W)w);
1376}
1377
1378void
1379ev_check_start (EV_P_ struct ev_check *w)
1380{
1381 if (ev_is_active (w))
1382 return;
1383
1384 ev_start (EV_A_ (W)w, ++checkcnt);
1385 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1386 checks [checkcnt - 1] = w;
1387}
1388
1389void
1390ev_check_stop (EV_P_ struct ev_check *w)
1391{
1392 ev_clear_pending (EV_A_ (W)w);
1393 if (ev_is_active (w))
1394 return;
1395
1396 checks [((W)w)->active - 1] = checks [--checkcnt];
1397 ev_stop (EV_A_ (W)w);
1398}
1399 1754
1400#ifndef SA_RESTART 1755#ifndef SA_RESTART
1401# define SA_RESTART 0 1756# define SA_RESTART 0
1402#endif 1757#endif
1403 1758
1404void 1759void noinline
1405ev_signal_start (EV_P_ struct ev_signal *w) 1760ev_signal_start (EV_P_ ev_signal *w)
1406{ 1761{
1407#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1408 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1409#endif 1764#endif
1410 if (ev_is_active (w)) 1765 if (expect_false (ev_is_active (w)))
1411 return; 1766 return;
1412 1767
1413 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1414 1769
1770 {
1771#ifndef _WIN32
1772 sigset_t full, prev;
1773 sigfillset (&full);
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1778
1779#ifndef _WIN32
1780 sigprocmask (SIG_SETMASK, &prev, 0);
1781#endif
1782 }
1783
1415 ev_start (EV_A_ (W)w, 1); 1784 ev_start (EV_A_ (W)w, 1);
1416 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1417 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1785 wlist_add (&signals [w->signum - 1].head, (WL)w);
1418 1786
1419 if (!((WL)w)->next) 1787 if (!((WL)w)->next)
1420 { 1788 {
1421#if WIN32 1789#if _WIN32
1422 signal (w->signum, sighandler); 1790 signal (w->signum, sighandler);
1423#else 1791#else
1424 struct sigaction sa; 1792 struct sigaction sa;
1425 sa.sa_handler = sighandler; 1793 sa.sa_handler = sighandler;
1426 sigfillset (&sa.sa_mask); 1794 sigfillset (&sa.sa_mask);
… …
1428 sigaction (w->signum, &sa, 0); 1796 sigaction (w->signum, &sa, 0);
1429#endif 1797#endif
1430 } 1798 }
1431} 1799}
1432 1800
1433void 1801void noinline
1434ev_signal_stop (EV_P_ struct ev_signal *w) 1802ev_signal_stop (EV_P_ ev_signal *w)
1435{ 1803{
1436 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1437 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1438 return; 1806 return;
1439 1807
1440 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1808 wlist_del (&signals [w->signum - 1].head, (WL)w);
1441 ev_stop (EV_A_ (W)w); 1809 ev_stop (EV_A_ (W)w);
1442 1810
1443 if (!signals [w->signum - 1].head) 1811 if (!signals [w->signum - 1].head)
1444 signal (w->signum, SIG_DFL); 1812 signal (w->signum, SIG_DFL);
1445} 1813}
1446 1814
1447void 1815void
1448ev_child_start (EV_P_ struct ev_child *w) 1816ev_child_start (EV_P_ ev_child *w)
1449{ 1817{
1450#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1451 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1452#endif 1820#endif
1453 if (ev_is_active (w)) 1821 if (expect_false (ev_is_active (w)))
1454 return; 1822 return;
1455 1823
1456 ev_start (EV_A_ (W)w, 1); 1824 ev_start (EV_A_ (W)w, 1);
1457 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1458} 1826}
1459 1827
1460void 1828void
1461ev_child_stop (EV_P_ struct ev_child *w) 1829ev_child_stop (EV_P_ ev_child *w)
1462{ 1830{
1463 ev_clear_pending (EV_A_ (W)w); 1831 clear_pending (EV_A_ (W)w);
1464 if (ev_is_active (w)) 1832 if (expect_false (!ev_is_active (w)))
1465 return; 1833 return;
1466 1834
1467 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1468 ev_stop (EV_A_ (W)w); 1836 ev_stop (EV_A_ (W)w);
1469} 1837}
1470 1838
1839#if EV_STAT_ENABLE
1840
1841# ifdef _WIN32
1842# undef lstat
1843# define lstat(a,b) _stati64 (a,b)
1844# endif
1845
1846#define DEF_STAT_INTERVAL 5.0074891
1847#define MIN_STAT_INTERVAL 0.1074891
1848
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850
1851#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192
1853
1854static void noinline
1855infy_add (EV_P_ ev_stat *w)
1856{
1857 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);
1858
1859 if (w->wd < 0)
1860 {
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862
1863 /* monitor some parent directory for speedup hints */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 {
1866 char path [4096];
1867 strcpy (path, w->path);
1868
1869 do
1870 {
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873
1874 char *pend = strrchr (path, '/');
1875
1876 if (!pend)
1877 break; /* whoops, no '/', complain to your admin */
1878
1879 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 }
1884 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887
1888 if (w->wd >= 0)
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1890}
1891
1892static void noinline
1893infy_del (EV_P_ ev_stat *w)
1894{
1895 int slot;
1896 int wd = w->wd;
1897
1898 if (wd < 0)
1899 return;
1900
1901 w->wd = -2;
1902 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1903 wlist_del (&fs_hash [slot].head, (WL)w);
1904
1905 /* remove this watcher, if others are watching it, they will rearm */
1906 inotify_rm_watch (fs_fd, wd);
1907}
1908
1909static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{
1912 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev);
1916 else
1917 {
1918 WL w_;
1919
1920 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1921 {
1922 ev_stat *w = (ev_stat *)w_;
1923 w_ = w_->next; /* lets us remove this watcher and all before it */
1924
1925 if (w->wd == wd || wd == -1)
1926 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 {
1929 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */
1931 }
1932
1933 stat_timer_cb (EV_A_ &w->timer, 0);
1934 }
1935 }
1936 }
1937}
1938
1939static void
1940infy_cb (EV_P_ ev_io *w, int revents)
1941{
1942 char buf [EV_INOTIFY_BUFSIZE];
1943 struct inotify_event *ev = (struct inotify_event *)buf;
1944 int ofs;
1945 int len = read (fs_fd, buf, sizeof (buf));
1946
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949}
1950
1951void inline_size
1952infy_init (EV_P)
1953{
1954 if (fs_fd != -2)
1955 return;
1956
1957 fs_fd = inotify_init ();
1958
1959 if (fs_fd >= 0)
1960 {
1961 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1962 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w);
1964 }
1965}
1966
1967void inline_size
1968infy_fork (EV_P)
1969{
1970 int slot;
1971
1972 if (fs_fd < 0)
1973 return;
1974
1975 close (fs_fd);
1976 fs_fd = inotify_init ();
1977
1978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1979 {
1980 WL w_ = fs_hash [slot].head;
1981 fs_hash [slot].head = 0;
1982
1983 while (w_)
1984 {
1985 ev_stat *w = (ev_stat *)w_;
1986 w_ = w_->next; /* lets us add this watcher */
1987
1988 w->wd = -1;
1989
1990 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else
1993 ev_timer_start (EV_A_ &w->timer);
1994 }
1995
1996 }
1997}
1998
1999#endif
2000
2001void
2002ev_stat_stat (EV_P_ ev_stat *w)
2003{
2004 if (lstat (w->path, &w->attr) < 0)
2005 w->attr.st_nlink = 0;
2006 else if (!w->attr.st_nlink)
2007 w->attr.st_nlink = 1;
2008}
2009
2010static void noinline
2011stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2012{
2013 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2014
2015 /* we copy this here each the time so that */
2016 /* prev has the old value when the callback gets invoked */
2017 w->prev = w->attr;
2018 ev_stat_stat (EV_A_ w);
2019
2020 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2021 if (
2022 w->prev.st_dev != w->attr.st_dev
2023 || w->prev.st_ino != w->attr.st_ino
2024 || w->prev.st_mode != w->attr.st_mode
2025 || w->prev.st_nlink != w->attr.st_nlink
2026 || w->prev.st_uid != w->attr.st_uid
2027 || w->prev.st_gid != w->attr.st_gid
2028 || w->prev.st_rdev != w->attr.st_rdev
2029 || w->prev.st_size != w->attr.st_size
2030 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime
2033 ) {
2034 #if EV_USE_INOTIFY
2035 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */
2038 #endif
2039
2040 ev_feed_event (EV_A_ w, EV_STAT);
2041 }
2042}
2043
2044void
2045ev_stat_start (EV_P_ ev_stat *w)
2046{
2047 if (expect_false (ev_is_active (w)))
2048 return;
2049
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w);
2055
2056 if (w->interval < MIN_STAT_INTERVAL)
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2060 ev_set_priority (&w->timer, ev_priority (w));
2061
2062#if EV_USE_INOTIFY
2063 infy_init (EV_A);
2064
2065 if (fs_fd >= 0)
2066 infy_add (EV_A_ w);
2067 else
2068#endif
2069 ev_timer_start (EV_A_ &w->timer);
2070
2071 ev_start (EV_A_ (W)w, 1);
2072}
2073
2074void
2075ev_stat_stop (EV_P_ ev_stat *w)
2076{
2077 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w)))
2079 return;
2080
2081#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w);
2083#endif
2084 ev_timer_stop (EV_A_ &w->timer);
2085
2086 ev_stop (EV_A_ (W)w);
2087}
2088#endif
2089
2090#if EV_IDLE_ENABLE
2091void
2092ev_idle_start (EV_P_ ev_idle *w)
2093{
2094 if (expect_false (ev_is_active (w)))
2095 return;
2096
2097 pri_adjust (EV_A_ (W)w);
2098
2099 {
2100 int active = ++idlecnt [ABSPRI (w)];
2101
2102 ++idleall;
2103 ev_start (EV_A_ (W)w, active);
2104
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w;
2107 }
2108}
2109
2110void
2111ev_idle_stop (EV_P_ ev_idle *w)
2112{
2113 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w)))
2115 return;
2116
2117 {
2118 int active = ((W)w)->active;
2119
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2122
2123 ev_stop (EV_A_ (W)w);
2124 --idleall;
2125 }
2126}
2127#endif
2128
2129void
2130ev_prepare_start (EV_P_ ev_prepare *w)
2131{
2132 if (expect_false (ev_is_active (w)))
2133 return;
2134
2135 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w;
2138}
2139
2140void
2141ev_prepare_stop (EV_P_ ev_prepare *w)
2142{
2143 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w)))
2145 return;
2146
2147 {
2148 int active = ((W)w)->active;
2149 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active;
2151 }
2152
2153 ev_stop (EV_A_ (W)w);
2154}
2155
2156void
2157ev_check_start (EV_P_ ev_check *w)
2158{
2159 if (expect_false (ev_is_active (w)))
2160 return;
2161
2162 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w;
2165}
2166
2167void
2168ev_check_stop (EV_P_ ev_check *w)
2169{
2170 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w)))
2172 return;
2173
2174 {
2175 int active = ((W)w)->active;
2176 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active;
2178 }
2179
2180 ev_stop (EV_A_ (W)w);
2181}
2182
2183#if EV_EMBED_ENABLE
2184void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w)
2186{
2187 ev_loop (w->other, EVLOOP_NONBLOCK);
2188}
2189
2190static void
2191embed_cb (EV_P_ ev_io *io, int revents)
2192{
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194
2195 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else
2198 ev_embed_sweep (loop, w);
2199}
2200
2201void
2202ev_embed_start (EV_P_ ev_embed *w)
2203{
2204 if (expect_false (ev_is_active (w)))
2205 return;
2206
2207 {
2208 struct ev_loop *loop = w->other;
2209 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2210 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2211 }
2212
2213 ev_set_priority (&w->io, ev_priority (w));
2214 ev_io_start (EV_A_ &w->io);
2215
2216 ev_start (EV_A_ (W)w, 1);
2217}
2218
2219void
2220ev_embed_stop (EV_P_ ev_embed *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226 ev_io_stop (EV_A_ &w->io);
2227
2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
2232#if EV_FORK_ENABLE
2233void
2234ev_fork_start (EV_P_ ev_fork *w)
2235{
2236 if (expect_false (ev_is_active (w)))
2237 return;
2238
2239 ev_start (EV_A_ (W)w, ++forkcnt);
2240 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2241 forks [forkcnt - 1] = w;
2242}
2243
2244void
2245ev_fork_stop (EV_P_ ev_fork *w)
2246{
2247 clear_pending (EV_A_ (W)w);
2248 if (expect_false (!ev_is_active (w)))
2249 return;
2250
2251 {
2252 int active = ((W)w)->active;
2253 forks [active - 1] = forks [--forkcnt];
2254 ((W)forks [active - 1])->active = active;
2255 }
2256
2257 ev_stop (EV_A_ (W)w);
2258}
2259#endif
2260
1471/*****************************************************************************/ 2261/*****************************************************************************/
1472 2262
1473struct ev_once 2263struct ev_once
1474{ 2264{
1475 struct ev_io io; 2265 ev_io io;
1476 struct ev_timer to; 2266 ev_timer to;
1477 void (*cb)(int revents, void *arg); 2267 void (*cb)(int revents, void *arg);
1478 void *arg; 2268 void *arg;
1479}; 2269};
1480 2270
1481static void 2271static void
… …
1490 2280
1491 cb (revents, arg); 2281 cb (revents, arg);
1492} 2282}
1493 2283
1494static void 2284static void
1495once_cb_io (EV_P_ struct ev_io *w, int revents) 2285once_cb_io (EV_P_ ev_io *w, int revents)
1496{ 2286{
1497 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2287 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1498} 2288}
1499 2289
1500static void 2290static void
1501once_cb_to (EV_P_ struct ev_timer *w, int revents) 2291once_cb_to (EV_P_ ev_timer *w, int revents)
1502{ 2292{
1503 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2293 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1504} 2294}
1505 2295
1506void 2296void
1507ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2297ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1508{ 2298{
1509 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2299 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1510 2300
1511 if (!once) 2301 if (expect_false (!once))
2302 {
1512 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2303 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1513 else 2304 return;
1514 { 2305 }
2306
1515 once->cb = cb; 2307 once->cb = cb;
1516 once->arg = arg; 2308 once->arg = arg;
1517 2309
1518 ev_watcher_init (&once->io, once_cb_io); 2310 ev_init (&once->io, once_cb_io);
1519 if (fd >= 0) 2311 if (fd >= 0)
1520 { 2312 {
1521 ev_io_set (&once->io, fd, events); 2313 ev_io_set (&once->io, fd, events);
1522 ev_io_start (EV_A_ &once->io); 2314 ev_io_start (EV_A_ &once->io);
1523 } 2315 }
1524 2316
1525 ev_watcher_init (&once->to, once_cb_to); 2317 ev_init (&once->to, once_cb_to);
1526 if (timeout >= 0.) 2318 if (timeout >= 0.)
1527 { 2319 {
1528 ev_timer_set (&once->to, timeout, 0.); 2320 ev_timer_set (&once->to, timeout, 0.);
1529 ev_timer_start (EV_A_ &once->to); 2321 ev_timer_start (EV_A_ &once->to);
1530 }
1531 } 2322 }
1532} 2323}
1533 2324
2325#if EV_MULTIPLICITY
2326 #include "ev_wrap.h"
2327#endif
2328
2329#ifdef __cplusplus
2330}
2331#endif
2332

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