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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.192 by root, Fri Dec 21 07:55:29 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
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#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) */
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 */
130
131#ifdef EV_H 123#ifdef EV_H
132# include EV_H 124# include EV_H
133#else 125#else
134# include "ev.h" 126# include "ev.h"
135#endif 127#endif
136 128
129#ifndef _WIN32
130# include <sys/time.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
138# endif
139#endif
140
141/**/
142
143#ifndef EV_USE_MONOTONIC
144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
149#endif
150
151#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1
153#endif
154
155#ifndef EV_USE_POLL
156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
161#endif
162
163#ifndef EV_USE_EPOLL
164# define EV_USE_EPOLL 0
165#endif
166
167#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0
169#endif
170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
195/**/
196
197#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0
200#endif
201
202#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0
205#endif
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
220/**/
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
232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
235
137#if __GNUC__ >= 3 236#if __GNUC__ >= 4
138# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 238# define noinline __attribute__ ((noinline))
140#else 239#else
141# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
142# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
143#endif 245#endif
144 246
145#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
146#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
147 256
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
151typedef struct ev_watcher *W; 263typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
154 266
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156 268
269#ifdef _WIN32
157#include "ev_win32.c" 270# include "ev_win32.c"
271#endif
158 272
159/*****************************************************************************/ 273/*****************************************************************************/
160 274
161static void (*syserr_cb)(const char *msg); 275static void (*syserr_cb)(const char *msg);
162 276
277void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 278ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 279{
165 syserr_cb = cb; 280 syserr_cb = cb;
166} 281}
167 282
168static void 283static void noinline
169syserr (const char *msg) 284syserr (const char *msg)
170{ 285{
171 if (!msg) 286 if (!msg)
172 msg = "(libev) system error"; 287 msg = "(libev) system error";
173 288
… …
180 } 295 }
181} 296}
182 297
183static void *(*alloc)(void *ptr, long size); 298static void *(*alloc)(void *ptr, long size);
184 299
300void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 301ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 302{
187 alloc = cb; 303 alloc = cb;
188} 304}
189 305
190static void * 306inline_speed void *
191ev_realloc (void *ptr, long size) 307ev_realloc (void *ptr, long size)
192{ 308{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 310
195 if (!ptr && size) 311 if (!ptr && size)
… …
209typedef struct 325typedef struct
210{ 326{
211 WL head; 327 WL head;
212 unsigned char events; 328 unsigned char events;
213 unsigned char reify; 329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
214} ANFD; 333} ANFD;
215 334
216typedef struct 335typedef struct
217{ 336{
218 W w; 337 W w;
219 int events; 338 int events;
220} ANPENDING; 339} ANPENDING;
221 340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
222#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
223 349
224 struct ev_loop 350 struct ev_loop
225 { 351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 354 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 355 #include "ev_vars.h"
228 #undef VAR 356 #undef VAR
229 }; 357 };
230 #include "ev_wrap.h" 358 #include "ev_wrap.h"
231 359
232 struct ev_loop default_loop_struct; 360 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 361 struct ev_loop *ev_default_loop_ptr;
234 362
235#else 363#else
236 364
365 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 367 #include "ev_vars.h"
239 #undef VAR 368 #undef VAR
240 369
241 static int default_loop; 370 static int ev_default_loop_ptr;
242 371
243#endif 372#endif
244 373
245/*****************************************************************************/ 374/*****************************************************************************/
246 375
247inline ev_tstamp 376ev_tstamp
248ev_time (void) 377ev_time (void)
249{ 378{
250#if EV_USE_REALTIME 379#if EV_USE_REALTIME
251 struct timespec ts; 380 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 387#endif
259} 388}
260 389
261inline ev_tstamp 390ev_tstamp inline_size
262get_clock (void) 391get_clock (void)
263{ 392{
264#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
266 { 395 {
… …
271#endif 400#endif
272 401
273 return ev_time (); 402 return ev_time ();
274} 403}
275 404
405#if EV_MULTIPLICITY
276ev_tstamp 406ev_tstamp
277ev_now (EV_P) 407ev_now (EV_P)
278{ 408{
279 return rt_now; 409 return ev_rt_now;
280} 410}
411#endif
281 412
282#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}
283 440
284#define array_needsize(type,base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
285 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
286 { \ 443 { \
287 int newcnt = cur; \ 444 int ocur_ = (cur); \
288 do \ 445 (base) = (type *)array_realloc \
289 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
290 newcnt = array_roundsize (type, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
291 } \
292 while ((cnt) > newcnt); \
293 \
294 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
295 init (base + cur, newcnt - cur); \
296 cur = newcnt; \
297 } 448 }
298 449
450#if 0
299#define array_slim(type,stem) \ 451#define array_slim(type,stem) \
300 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301 { \ 453 { \
302 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
303 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305 } 457 }
306 458#endif
307/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309#define array_free_microshit(stem) \
310 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311 459
312#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
313 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;
314 462
315/*****************************************************************************/ 463/*****************************************************************************/
316 464
317static 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
318anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
319{ 495{
320 while (count--) 496 while (count--)
321 { 497 {
322 base->head = 0; 498 base->head = 0;
… …
325 501
326 ++base; 502 ++base;
327 } 503 }
328} 504}
329 505
330void 506void inline_speed
331ev_feed_event (EV_P_ void *w, int revents)
332{
333 W w_ = (W)w;
334
335 if (w_->pending)
336 {
337 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338 return;
339 }
340
341 w_->pending = ++pendingcnt [ABSPRI (w_)];
342 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345}
346
347static void
348queue_events (EV_P_ W *events, int eventcnt, int type)
349{
350 int i;
351
352 for (i = 0; i < eventcnt; ++i)
353 ev_feed_event (EV_A_ events [i], type);
354}
355
356inline void
357fd_event (EV_P_ int fd, int revents) 507fd_event (EV_P_ int fd, int revents)
358{ 508{
359 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
360 struct ev_io *w; 510 ev_io *w;
361 511
362 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)
363 { 513 {
364 int ev = w->events & revents; 514 int ev = w->events & revents;
365 515
366 if (ev) 516 if (ev)
367 ev_feed_event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
… …
369} 519}
370 520
371void 521void
372ev_feed_fd_event (EV_P_ int fd, int revents) 522ev_feed_fd_event (EV_P_ int fd, int revents)
373{ 523{
524 if (fd >= 0 && fd < anfdmax)
374 fd_event (EV_A_ fd, revents); 525 fd_event (EV_A_ fd, revents);
375} 526}
376 527
377/*****************************************************************************/ 528void inline_size
378
379static void
380fd_reify (EV_P) 529fd_reify (EV_P)
381{ 530{
382 int i; 531 int i;
383 532
384 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
385 { 534 {
386 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
387 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 537 ev_io *w;
389 538
390 int events = 0; 539 unsigned char events = 0;
391 540
392 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)
393 events |= w->events; 542 events |= (unsigned char)w->events;
394 543
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
395 anfd->reify = 0; 557 anfd->reify = 0;
396
397 method_modify (EV_A_ fd, anfd->events, events);
398 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 }
399 } 563 }
400 564
401 fdchangecnt = 0; 565 fdchangecnt = 0;
402} 566}
403 567
404static void 568void inline_size
405fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
406{ 570{
407 if (anfds [fd].reify) 571 unsigned char reify = anfds [fd].reify;
408 return;
409
410 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
411 573
574 if (expect_true (!reify))
575 {
412 ++fdchangecnt; 576 ++fdchangecnt;
413 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
415} 580}
416 581
417static void 582void inline_speed
418fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
419{ 584{
420 struct ev_io *w; 585 ev_io *w;
421 586
422 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
423 { 588 {
424 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
425 ev_feed_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);
426 } 591 }
427} 592}
428 593
429static int 594int inline_size
430fd_valid (int fd) 595fd_valid (int fd)
431{ 596{
432#ifdef WIN32 597#ifdef _WIN32
433 return !!win32_get_osfhandle (fd); 598 return _get_osfhandle (fd) != -1;
434#else 599#else
435 return fcntl (fd, F_GETFD) != -1; 600 return fcntl (fd, F_GETFD) != -1;
436#endif 601#endif
437} 602}
438 603
439/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
440static void 605static void noinline
441fd_ebadf (EV_P) 606fd_ebadf (EV_P)
442{ 607{
443 int fd; 608 int fd;
444 609
445 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
… …
447 if (!fd_valid (fd) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
448 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
449} 614}
450 615
451/* 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 */
452static void 617static void noinline
453fd_enomem (EV_P) 618fd_enomem (EV_P)
454{ 619{
455 int fd; 620 int fd;
456 621
457 for (fd = anfdmax; fd--; ) 622 for (fd = anfdmax; fd--; )
… …
460 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
461 return; 626 return;
462 } 627 }
463} 628}
464 629
465/* 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 */
466static void 631static void noinline
467fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
468{ 633{
469 int fd; 634 int fd;
470 635
471 /* this should be highly optimised to not do anything but set a flag */
472 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
473 if (anfds [fd].events) 637 if (anfds [fd].events)
474 { 638 {
475 anfds [fd].events = 0; 639 anfds [fd].events = 0;
476 fd_change (EV_A_ fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
477 } 641 }
478} 642}
479 643
480/*****************************************************************************/ 644/*****************************************************************************/
481 645
482static void 646void inline_speed
483upheap (WT *heap, int k) 647upheap (WT *heap, int k)
484{ 648{
485 WT w = heap [k]; 649 WT w = heap [k];
486 650
487 while (k && heap [k >> 1]->at > w->at) 651 while (k)
488 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
489 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
490 ((W)heap [k])->active = k + 1; 659 ((W)heap [k])->active = k + 1;
491 k >>= 1; 660 k = p;
492 } 661 }
493 662
494 heap [k] = w; 663 heap [k] = w;
495 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
496
497} 665}
498 666
499static void 667void inline_speed
500downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
501{ 669{
502 WT w = heap [k]; 670 WT w = heap [k];
503 671
504 while (k < (N >> 1)) 672 for (;;)
505 { 673 {
506 int j = k << 1; 674 int c = (k << 1) + 1;
507 675
508 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
509 ++j;
510
511 if (w->at <= heap [j]->at)
512 break; 677 break;
513 678
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
514 heap [k] = heap [j]; 685 heap [k] = heap [c];
515 ((W)heap [k])->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
516 k = j; 688 k = c;
517 } 689 }
518 690
519 heap [k] = w; 691 heap [k] = w;
520 ((W)heap [k])->active = k + 1; 692 ((W)heap [k])->active = k + 1;
521} 693}
522 694
523inline void 695void inline_size
524adjustheap (WT *heap, int N, int k, ev_tstamp at) 696adjustheap (WT *heap, int N, int k)
525{ 697{
526 ev_tstamp old_at = heap [k]->at; 698 upheap (heap, k);
527 heap [k]->at = at;
528
529 if (old_at < at)
530 downheap (heap, N, k); 699 downheap (heap, N, k);
531 else
532 upheap (heap, k);
533} 700}
534 701
535/*****************************************************************************/ 702/*****************************************************************************/
536 703
537typedef struct 704typedef struct
… …
543static ANSIG *signals; 710static ANSIG *signals;
544static int signalmax; 711static int signalmax;
545 712
546static int sigpipe [2]; 713static int sigpipe [2];
547static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
548static struct ev_io sigev; 715static ev_io sigev;
549 716
550static void 717void inline_size
551signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
552{ 719{
553 while (count--) 720 while (count--)
554 { 721 {
555 base->head = 0; 722 base->head = 0;
… …
560} 727}
561 728
562static void 729static void
563sighandler (int signum) 730sighandler (int signum)
564{ 731{
565#if WIN32 732#if _WIN32
566 signal (signum, sighandler); 733 signal (signum, sighandler);
567#endif 734#endif
568 735
569 signals [signum - 1].gotsig = 1; 736 signals [signum - 1].gotsig = 1;
570 737
571 if (!gotsig) 738 if (!gotsig)
572 { 739 {
573 int old_errno = errno; 740 int old_errno = errno;
574 gotsig = 1; 741 gotsig = 1;
575#ifdef WIN32
576 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577#else
578 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
579#endif
580 errno = old_errno; 743 errno = old_errno;
581 } 744 }
582} 745}
583 746
584void 747void noinline
585ev_feed_signal_event (EV_P_ int signum) 748ev_feed_signal_event (EV_P_ int signum)
586{ 749{
587 WL w; 750 WL w;
588 751
589#if EV_MULTIPLICITY 752#if EV_MULTIPLICITY
590 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591#endif 754#endif
592 755
593 --signum; 756 --signum;
594 757
595 if (signum < 0 || signum >= signalmax) 758 if (signum < 0 || signum >= signalmax)
… …
600 for (w = signals [signum].head; w; w = w->next) 763 for (w = signals [signum].head; w; w = w->next)
601 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602} 765}
603 766
604static void 767static void
605sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
606{ 769{
607 int signum; 770 int signum;
608 771
609#ifdef WIN32
610 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611#else
612 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
613#endif
614 gotsig = 0; 773 gotsig = 0;
615 774
616 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
617 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
618 ev_feed_signal_event (EV_A_ signum + 1); 777 ev_feed_signal_event (EV_A_ signum + 1);
619} 778}
620 779
621static 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
622siginit (EV_P) 793siginit (EV_P)
623{ 794{
624#ifndef WIN32 795 fd_intern (sigpipe [0]);
625 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 796 fd_intern (sigpipe [1]);
626 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628 /* rather than sort out wether we really need nb, set it */
629 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631#endif
632 797
633 ev_io_set (&sigev, sigpipe [0], EV_READ); 798 ev_io_set (&sigev, sigpipe [0], EV_READ);
634 ev_io_start (EV_A_ &sigev); 799 ev_io_start (EV_A_ &sigev);
635 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
636} 801}
637 802
638/*****************************************************************************/ 803/*****************************************************************************/
639 804
640static struct ev_child *childs [PID_HASHSIZE]; 805static WL childs [EV_PID_HASHSIZE];
641 806
642#ifndef WIN32 807#ifndef _WIN32
643 808
644static 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}
645 825
646#ifndef WCONTINUED 826#ifndef WCONTINUED
647# define WCONTINUED 0 827# define WCONTINUED 0
648#endif 828#endif
649 829
650static void 830static void
651child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
652{
653 struct ev_child *w;
654
655 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
656 if (w->pid == pid || !w->pid)
657 {
658 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659 w->rpid = pid;
660 w->rstatus = status;
661 ev_feed_event (EV_A_ (W)w, EV_CHILD);
662 }
663}
664
665static void
666childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
667{ 832{
668 int pid, status; 833 int pid, status;
669 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
672 /* 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 */
673 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674 845
675 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
676 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 */
677 }
678} 849}
679 850
680#endif 851#endif
681 852
682/*****************************************************************************/ 853/*****************************************************************************/
683 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
684#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
685# include "ev_kqueue.c" 859# include "ev_kqueue.c"
686#endif 860#endif
687#if EV_USE_EPOLL 861#if EV_USE_EPOLL
688# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
705{ 879{
706 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
707} 881}
708 882
709/* 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 */
710static int 884int inline_size
711enable_secure (void) 885enable_secure (void)
712{ 886{
713#ifdef WIN32 887#ifdef _WIN32
714 return 0; 888 return 0;
715#else 889#else
716 return getuid () != geteuid () 890 return getuid () != geteuid ()
717 || getgid () != getegid (); 891 || getgid () != getegid ();
718#endif 892#endif
719} 893}
720 894
721int 895unsigned int
722ev_method (EV_P) 896ev_supported_backends (void)
723{ 897{
724 return method; 898 unsigned int flags = 0;
725}
726 899
727static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728loop_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)
729{ 911{
730 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 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
931 return 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)
731 { 951 {
732#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
733 { 953 {
734 struct timespec ts; 954 struct timespec ts;
735 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736 have_monotonic = 1; 956 have_monotonic = 1;
737 } 957 }
738#endif 958#endif
739 959
740 rt_now = ev_time (); 960 ev_rt_now = ev_time ();
741 mn_now = get_clock (); 961 mn_now = get_clock ();
742 now_floor = mn_now; 962 now_floor = mn_now;
743 rtmn_diff = rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
744 964
745 if (methods == EVMETHOD_AUTO) 965 /* pid check not overridable via env */
746 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"))
747 methods = atoi (getenv ("LIBEV_METHODS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
748 else
749 methods = EVMETHOD_ANY;
750 975
751 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
752#if EV_USE_WIN32 981#if EV_USE_INOTIFY
753 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);
754#endif 987#endif
755#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
756 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757#endif 990#endif
758#if EV_USE_EPOLL 991#if EV_USE_EPOLL
759 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760#endif 993#endif
761#if EV_USE_POLL 994#if EV_USE_POLL
762 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763#endif 996#endif
764#if EV_USE_SELECT 997#if EV_USE_SELECT
765 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766#endif 999#endif
767 1000
768 ev_init (&sigev, sigcb); 1001 ev_init (&sigev, sigcb);
769 ev_set_priority (&sigev, EV_MAXPRI); 1002 ev_set_priority (&sigev, EV_MAXPRI);
770 } 1003 }
771} 1004}
772 1005
773void 1006static void noinline
774loop_destroy (EV_P) 1007loop_destroy (EV_P)
775{ 1008{
776 int i; 1009 int i;
777 1010
778#if EV_USE_WIN32 1011#if EV_USE_INOTIFY
779 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);
780#endif 1021#endif
781#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
782 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783#endif 1024#endif
784#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
785 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786#endif 1027#endif
787#if EV_USE_POLL 1028#if EV_USE_POLL
788 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789#endif 1030#endif
790#if EV_USE_SELECT 1031#if EV_USE_SELECT
791 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792#endif 1033#endif
793 1034
794 for (i = NUMPRI; i--; ) 1035 for (i = NUMPRI; i--; )
1036 {
795 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;
796 1044
797 /* have to use the microsoft-never-gets-it-right macro */ 1045 /* have to use the microsoft-never-gets-it-right macro */
798 array_free_microshit (fdchange); 1046 array_free (fdchange, EMPTY);
799 array_free_microshit (timer); 1047 array_free (timer, EMPTY);
800 array_free_microshit (periodic); 1048#if EV_PERIODIC_ENABLE
801 array_free_microshit (idle); 1049 array_free (periodic, EMPTY);
802 array_free_microshit (prepare); 1050#endif
803 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);
804 1056
805 method = 0; 1057 backend = 0;
806} 1058}
807 1059
808static void 1060void inline_size infy_fork (EV_P);
1061
1062void inline_size
809loop_fork (EV_P) 1063loop_fork (EV_P)
810{ 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
811#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
812 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1072 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813#endif 1073#endif
814#if EV_USE_KQUEUE 1074#if EV_USE_INOTIFY
815 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1075 infy_fork (EV_A);
816#endif 1076#endif
817 1077
818 if (ev_is_active (&sigev)) 1078 if (ev_is_active (&sigev))
819 { 1079 {
820 /* default loop */ 1080 /* default loop */
… …
833 postfork = 0; 1093 postfork = 0;
834} 1094}
835 1095
836#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
837struct ev_loop * 1097struct ev_loop *
838ev_loop_new (int methods) 1098ev_loop_new (unsigned int flags)
839{ 1099{
840 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));
841 1101
842 memset (loop, 0, sizeof (struct ev_loop)); 1102 memset (loop, 0, sizeof (struct ev_loop));
843 1103
844 loop_init (EV_A_ methods); 1104 loop_init (EV_A_ flags);
845 1105
846 if (ev_method (EV_A)) 1106 if (ev_backend (EV_A))
847 return loop; 1107 return loop;
848 1108
849 return 0; 1109 return 0;
850} 1110}
851 1111
… …
864 1124
865#endif 1125#endif
866 1126
867#if EV_MULTIPLICITY 1127#if EV_MULTIPLICITY
868struct ev_loop * 1128struct ev_loop *
1129ev_default_loop_init (unsigned int flags)
869#else 1130#else
870int 1131int
1132ev_default_loop (unsigned int flags)
871#endif 1133#endif
872ev_default_loop (int methods)
873{ 1134{
874 if (sigpipe [0] == sigpipe [1]) 1135 if (sigpipe [0] == sigpipe [1])
875 if (pipe (sigpipe)) 1136 if (pipe (sigpipe))
876 return 0; 1137 return 0;
877 1138
878 if (!default_loop) 1139 if (!ev_default_loop_ptr)
879 { 1140 {
880#if EV_MULTIPLICITY 1141#if EV_MULTIPLICITY
881 struct ev_loop *loop = default_loop = &default_loop_struct; 1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882#else 1143#else
883 default_loop = 1; 1144 ev_default_loop_ptr = 1;
884#endif 1145#endif
885 1146
886 loop_init (EV_A_ methods); 1147 loop_init (EV_A_ flags);
887 1148
888 if (ev_method (EV_A)) 1149 if (ev_backend (EV_A))
889 { 1150 {
890 siginit (EV_A); 1151 siginit (EV_A);
891 1152
892#ifndef WIN32 1153#ifndef _WIN32
893 ev_signal_init (&childev, childcb, SIGCHLD); 1154 ev_signal_init (&childev, childcb, SIGCHLD);
894 ev_set_priority (&childev, EV_MAXPRI); 1155 ev_set_priority (&childev, EV_MAXPRI);
895 ev_signal_start (EV_A_ &childev); 1156 ev_signal_start (EV_A_ &childev);
896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1157 ev_unref (EV_A); /* child watcher should not keep loop alive */
897#endif 1158#endif
898 } 1159 }
899 else 1160 else
900 default_loop = 0; 1161 ev_default_loop_ptr = 0;
901 } 1162 }
902 1163
903 return default_loop; 1164 return ev_default_loop_ptr;
904} 1165}
905 1166
906void 1167void
907ev_default_destroy (void) 1168ev_default_destroy (void)
908{ 1169{
909#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
910 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
911#endif 1172#endif
912 1173
913#ifndef WIN32 1174#ifndef _WIN32
914 ev_ref (EV_A); /* child watcher */ 1175 ev_ref (EV_A); /* child watcher */
915 ev_signal_stop (EV_A_ &childev); 1176 ev_signal_stop (EV_A_ &childev);
916#endif 1177#endif
917 1178
918 ev_ref (EV_A); /* signal watcher */ 1179 ev_ref (EV_A); /* signal watcher */
… …
926 1187
927void 1188void
928ev_default_fork (void) 1189ev_default_fork (void)
929{ 1190{
930#if EV_MULTIPLICITY 1191#if EV_MULTIPLICITY
931 struct ev_loop *loop = default_loop; 1192 struct ev_loop *loop = ev_default_loop_ptr;
932#endif 1193#endif
933 1194
934 if (method) 1195 if (backend)
935 postfork = 1; 1196 postfork = 1;
936} 1197}
937 1198
938/*****************************************************************************/ 1199/*****************************************************************************/
939 1200
940static int 1201void
941any_pending (EV_P) 1202ev_invoke (EV_P_ void *w, int revents)
942{ 1203{
943 int pri; 1204 EV_CB_INVOKE ((W)w, revents);
944
945 for (pri = NUMPRI; pri--; )
946 if (pendingcnt [pri])
947 return 1;
948
949 return 0;
950} 1205}
951 1206
952static void 1207void inline_speed
953call_pending (EV_P) 1208call_pending (EV_P)
954{ 1209{
955 int pri; 1210 int pri;
956 1211
957 for (pri = NUMPRI; pri--; ) 1212 for (pri = NUMPRI; pri--; )
958 while (pendingcnt [pri]) 1213 while (pendingcnt [pri])
959 { 1214 {
960 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961 1216
962 if (p->w) 1217 if (expect_true (p->w))
963 { 1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
964 p->w->pending = 0; 1221 p->w->pending = 0;
965 EV_CB_INVOKE (p->w, p->events); 1222 EV_CB_INVOKE (p->w, p->events);
966 } 1223 }
967 } 1224 }
968} 1225}
969 1226
970static void 1227void inline_size
971timers_reify (EV_P) 1228timers_reify (EV_P)
972{ 1229{
973 while (timercnt && ((WT)timers [0])->at <= mn_now) 1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
974 { 1231 {
975 struct ev_timer *w = timers [0]; 1232 ev_timer *w = (ev_timer *)timers [0];
976 1233
977 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978 1235
979 /* first reschedule or stop timer */ 1236 /* first reschedule or stop timer */
980 if (w->repeat) 1237 if (w->repeat)
981 { 1238 {
982 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
983 ((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
984 downheap ((WT *)timers, timercnt, 0); 1245 downheap (timers, timercnt, 0);
985 } 1246 }
986 else 1247 else
987 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988 1249
989 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990 } 1251 }
991} 1252}
992 1253
993static void 1254#if EV_PERIODIC_ENABLE
1255void inline_size
994periodics_reify (EV_P) 1256periodics_reify (EV_P)
995{ 1257{
996 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997 { 1259 {
998 struct ev_periodic *w = periodics [0]; 1260 ev_periodic *w = (ev_periodic *)periodics [0];
999 1261
1000 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001 1263
1002 /* first reschedule or stop timer */ 1264 /* first reschedule or stop timer */
1003 if (w->reschedule_cb) 1265 if (w->reschedule_cb)
1004 { 1266 {
1005 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1006
1007 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008 downheap ((WT *)periodics, periodiccnt, 0); 1269 downheap (periodics, periodiccnt, 0);
1009 } 1270 }
1010 else if (w->interval) 1271 else if (w->interval)
1011 { 1272 {
1012 ((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;
1013 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));
1014 downheap ((WT *)periodics, periodiccnt, 0); 1276 downheap (periodics, periodiccnt, 0);
1015 } 1277 }
1016 else 1278 else
1017 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1280
1019 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020 } 1282 }
1021} 1283}
1022 1284
1023static void 1285static void noinline
1024periodics_reschedule (EV_P) 1286periodics_reschedule (EV_P)
1025{ 1287{
1026 int i; 1288 int i;
1027 1289
1028 /* adjust periodics after time jump */ 1290 /* adjust periodics after time jump */
1029 for (i = 0; i < periodiccnt; ++i) 1291 for (i = 0; i < periodiccnt; ++i)
1030 { 1292 {
1031 struct ev_periodic *w = periodics [i]; 1293 ev_periodic *w = (ev_periodic *)periodics [i];
1032 1294
1033 if (w->reschedule_cb) 1295 if (w->reschedule_cb)
1034 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035 else if (w->interval) 1297 else if (w->interval)
1036 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1037 } 1299 }
1038 1300
1039 /* now rebuild the heap */ 1301 /* now rebuild the heap */
1040 for (i = periodiccnt >> 1; i--; ) 1302 for (i = periodiccnt >> 1; i--; )
1041 downheap ((WT *)periodics, periodiccnt, i); 1303 downheap (periodics, periodiccnt, i);
1042} 1304}
1305#endif
1043 1306
1044inline int 1307#if EV_IDLE_ENABLE
1045time_update_monotonic (EV_P) 1308void inline_size
1309idle_reify (EV_P)
1046{ 1310{
1047 mn_now = get_clock (); 1311 if (expect_false (idleall))
1048
1049 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050 {
1051 rt_now = rtmn_diff + mn_now;
1052 return 0;
1053 } 1312 {
1054 else 1313 int pri;
1314
1315 for (pri = NUMPRI; pri--; )
1316 {
1317 if (pendingcnt [pri])
1318 break;
1319
1320 if (idlecnt [pri])
1321 {
1322 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1323 break;
1324 }
1325 }
1055 { 1326 }
1056 now_floor = mn_now;
1057 rt_now = ev_time ();
1058 return 1;
1059 }
1060} 1327}
1328#endif
1061 1329
1062static void 1330void inline_speed
1063time_update (EV_P) 1331time_update (EV_P_ ev_tstamp max_block)
1064{ 1332{
1065 int i; 1333 int i;
1066 1334
1067#if EV_USE_MONOTONIC 1335#if EV_USE_MONOTONIC
1068 if (expect_true (have_monotonic)) 1336 if (expect_true (have_monotonic))
1069 { 1337 {
1070 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))
1071 { 1345 {
1072 ev_tstamp odiff = rtmn_diff; 1346 ev_rt_now = rtmn_diff + mn_now;
1347 return;
1348 }
1073 1349
1350 now_floor = mn_now;
1351 ev_rt_now = ev_time ();
1352
1074 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; )
1075 { 1362 {
1076 rtmn_diff = rt_now - mn_now; 1363 rtmn_diff = ev_rt_now - mn_now;
1077 1364
1078 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079 return; /* all is well */ 1366 return; /* all is well */
1080 1367
1081 rt_now = ev_time (); 1368 ev_rt_now = ev_time ();
1082 mn_now = get_clock (); 1369 mn_now = get_clock ();
1083 now_floor = mn_now; 1370 now_floor = mn_now;
1084 } 1371 }
1085 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
1086 periodics_reschedule (EV_A); 1387 periodics_reschedule (EV_A);
1087 /* no timer adjustment, as the monotonic clock doesn't jump */ 1388#endif
1088 /* 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;
1089 } 1392 }
1090 }
1091 else
1092#endif
1093 {
1094 rt_now = ev_time ();
1095 1393
1096 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097 {
1098 periodics_reschedule (EV_A);
1099
1100 /* adjust timers. this is easy, as the offset is the same for all */
1101 for (i = 0; i < timercnt; ++i)
1102 ((WT)timers [i])->at += rt_now - mn_now;
1103 }
1104
1105 mn_now = rt_now; 1394 mn_now = ev_rt_now;
1106 } 1395 }
1107} 1396}
1108 1397
1109void 1398void
1110ev_ref (EV_P) 1399ev_ref (EV_P)
… …
1121static int loop_done; 1410static int loop_done;
1122 1411
1123void 1412void
1124ev_loop (EV_P_ int flags) 1413ev_loop (EV_P_ int flags)
1125{ 1414{
1126 double block;
1127 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 */
1128 1420
1129 do 1421 do
1130 { 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
1131 /* queue check watchers (and execute them) */ 1442 /* queue prepare watchers (and execute them) */
1132 if (expect_false (preparecnt)) 1443 if (expect_false (preparecnt))
1133 { 1444 {
1134 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135 call_pending (EV_A); 1446 call_pending (EV_A);
1136 } 1447 }
1137 1448
1449 if (expect_false (!activecnt))
1450 break;
1451
1138 /* we might have forked, so reify kernel state if necessary */ 1452 /* we might have forked, so reify kernel state if necessary */
1139 if (expect_false (postfork)) 1453 if (expect_false (postfork))
1140 loop_fork (EV_A); 1454 loop_fork (EV_A);
1141 1455
1142 /* update fd-related kernel structures */ 1456 /* update fd-related kernel structures */
1143 fd_reify (EV_A); 1457 fd_reify (EV_A);
1144 1458
1145 /* calculate blocking time */ 1459 /* calculate blocking time */
1460 {
1461 ev_tstamp block;
1146 1462
1147 /* we only need this for !monotonic clock or timers, but as we basically 1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1148 always have timers, we just calculate it always */ 1464 block = 0.; /* do not block at all */
1149#if EV_USE_MONOTONIC
1150 if (expect_true (have_monotonic))
1151 time_update_monotonic (EV_A);
1152 else 1465 else
1153#endif
1154 { 1466 {
1155 rt_now = ev_time (); 1467 /* update time to cancel out callback processing overhead */
1156 mn_now = rt_now; 1468 time_update (EV_A_ 1e100);
1157 }
1158 1469
1159 if (flags & EVLOOP_NONBLOCK || idlecnt)
1160 block = 0.;
1161 else
1162 {
1163 block = MAX_BLOCKTIME; 1470 block = MAX_BLOCKTIME;
1164 1471
1165 if (timercnt) 1472 if (timercnt)
1166 { 1473 {
1167 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168 if (block > to) block = to; 1475 if (block > to) block = to;
1169 } 1476 }
1170 1477
1478#if EV_PERIODIC_ENABLE
1171 if (periodiccnt) 1479 if (periodiccnt)
1172 { 1480 {
1173 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174 if (block > to) block = to; 1482 if (block > to) block = to;
1175 } 1483 }
1484#endif
1176 1485
1177 if (block < 0.) block = 0.; 1486 if (expect_false (block < 0.)) block = 0.;
1178 } 1487 }
1179 1488
1489 ++loop_count;
1180 method_poll (EV_A_ block); 1490 backend_poll (EV_A_ block);
1181 1491
1182 /* update rt_now, do magic */ 1492 /* update ev_rt_now, do magic */
1183 time_update (EV_A); 1493 time_update (EV_A_ block);
1494 }
1184 1495
1185 /* queue pending timers and reschedule them */ 1496 /* queue pending timers and reschedule them */
1186 timers_reify (EV_A); /* relative timers called last */ 1497 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE
1187 periodics_reify (EV_A); /* absolute timers called first */ 1499 periodics_reify (EV_A); /* absolute timers called first */
1500#endif
1188 1501
1502#if EV_IDLE_ENABLE
1189 /* queue idle watchers unless io or timers are pending */ 1503 /* queue idle watchers unless other events are pending */
1190 if (idlecnt && !any_pending (EV_A)) 1504 idle_reify (EV_A);
1191 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1505#endif
1192 1506
1193 /* queue check watchers, to be executed first */ 1507 /* queue check watchers, to be executed first */
1194 if (checkcnt) 1508 if (expect_false (checkcnt))
1195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196 1510
1197 call_pending (EV_A); 1511 call_pending (EV_A);
1512
1198 } 1513 }
1199 while (activecnt && !loop_done); 1514 while (expect_true (activecnt && !loop_done));
1200 1515
1201 if (loop_done != 2) 1516 if (loop_done == EVUNLOOP_ONE)
1202 loop_done = 0; 1517 loop_done = EVUNLOOP_CANCEL;
1203} 1518}
1204 1519
1205void 1520void
1206ev_unloop (EV_P_ int how) 1521ev_unloop (EV_P_ int how)
1207{ 1522{
1208 loop_done = how; 1523 loop_done = how;
1209} 1524}
1210 1525
1211/*****************************************************************************/ 1526/*****************************************************************************/
1212 1527
1213inline void 1528void inline_size
1214wlist_add (WL *head, WL elem) 1529wlist_add (WL *head, WL elem)
1215{ 1530{
1216 elem->next = *head; 1531 elem->next = *head;
1217 *head = elem; 1532 *head = elem;
1218} 1533}
1219 1534
1220inline void 1535void inline_size
1221wlist_del (WL *head, WL elem) 1536wlist_del (WL *head, WL elem)
1222{ 1537{
1223 while (*head) 1538 while (*head)
1224 { 1539 {
1225 if (*head == elem) 1540 if (*head == elem)
… …
1230 1545
1231 head = &(*head)->next; 1546 head = &(*head)->next;
1232 } 1547 }
1233} 1548}
1234 1549
1235inline void 1550void inline_speed
1236ev_clear_pending (EV_P_ W w) 1551clear_pending (EV_P_ W w)
1237{ 1552{
1238 if (w->pending) 1553 if (w->pending)
1239 { 1554 {
1240 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1555 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241 w->pending = 0; 1556 w->pending = 0;
1242 } 1557 }
1243} 1558}
1244 1559
1245inline 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
1246ev_start (EV_P_ W w, int active) 1587ev_start (EV_P_ W w, int active)
1247{ 1588{
1248 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1589 pri_adjust (EV_A_ w);
1249 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250
1251 w->active = active; 1590 w->active = active;
1252 ev_ref (EV_A); 1591 ev_ref (EV_A);
1253} 1592}
1254 1593
1255inline void 1594void inline_size
1256ev_stop (EV_P_ W w) 1595ev_stop (EV_P_ W w)
1257{ 1596{
1258 ev_unref (EV_A); 1597 ev_unref (EV_A);
1259 w->active = 0; 1598 w->active = 0;
1260} 1599}
1261 1600
1262/*****************************************************************************/ 1601/*****************************************************************************/
1263 1602
1264void 1603void noinline
1265ev_io_start (EV_P_ struct ev_io *w) 1604ev_io_start (EV_P_ ev_io *w)
1266{ 1605{
1267 int fd = w->fd; 1606 int fd = w->fd;
1268 1607
1269 if (ev_is_active (w)) 1608 if (expect_false (ev_is_active (w)))
1270 return; 1609 return;
1271 1610
1272 assert (("ev_io_start called with negative fd", fd >= 0)); 1611 assert (("ev_io_start called with negative fd", fd >= 0));
1273 1612
1274 ev_start (EV_A_ (W)w, 1); 1613 ev_start (EV_A_ (W)w, 1);
1275 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1276 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1615 wlist_add (&anfds[fd].head, (WL)w);
1277 1616
1278 fd_change (EV_A_ fd); 1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET;
1279} 1619}
1280 1620
1281void 1621void noinline
1282ev_io_stop (EV_P_ struct ev_io *w) 1622ev_io_stop (EV_P_ ev_io *w)
1283{ 1623{
1284 ev_clear_pending (EV_A_ (W)w); 1624 clear_pending (EV_A_ (W)w);
1285 if (!ev_is_active (w)) 1625 if (expect_false (!ev_is_active (w)))
1286 return; 1626 return;
1287 1627
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1629
1288 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1630 wlist_del (&anfds[w->fd].head, (WL)w);
1289 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1290 1632
1291 fd_change (EV_A_ w->fd); 1633 fd_change (EV_A_ w->fd, 1);
1292} 1634}
1293 1635
1294void 1636void noinline
1295ev_timer_start (EV_P_ struct ev_timer *w) 1637ev_timer_start (EV_P_ ev_timer *w)
1638{
1639 if (expect_false (ev_is_active (w)))
1640 return;
1641
1642 ((WT)w)->at += mn_now;
1643
1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645
1646 ev_start (EV_A_ (W)w, ++timercnt);
1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1648 timers [timercnt - 1] = (WT)w;
1649 upheap (timers, timercnt - 1);
1650
1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1652}
1653
1654void noinline
1655ev_timer_stop (EV_P_ ev_timer *w)
1656{
1657 clear_pending (EV_A_ (W)w);
1658 if (expect_false (!ev_is_active (w)))
1659 return;
1660
1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1662
1663 {
1664 int active = ((W)w)->active;
1665
1666 if (expect_true (--active < --timercnt))
1667 {
1668 timers [active] = timers [timercnt];
1669 adjustheap (timers, timercnt, active);
1670 }
1671 }
1672
1673 ((WT)w)->at -= mn_now;
1674
1675 ev_stop (EV_A_ (W)w);
1676}
1677
1678void noinline
1679ev_timer_again (EV_P_ ev_timer *w)
1296{ 1680{
1297 if (ev_is_active (w)) 1681 if (ev_is_active (w))
1298 return;
1299
1300 ((WT)w)->at += mn_now;
1301
1302 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303
1304 ev_start (EV_A_ (W)w, ++timercnt);
1305 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1306 timers [timercnt - 1] = w;
1307 upheap ((WT *)timers, timercnt - 1);
1308
1309 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310}
1311
1312void
1313ev_timer_stop (EV_P_ struct ev_timer *w)
1314{
1315 ev_clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w))
1317 return;
1318
1319 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1320
1321 if (((W)w)->active < timercnt--)
1322 {
1323 timers [((W)w)->active - 1] = timers [timercnt];
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325 }
1326
1327 ((WT)w)->at = w->repeat;
1328
1329 ev_stop (EV_A_ (W)w);
1330}
1331
1332void
1333ev_timer_again (EV_P_ struct ev_timer *w)
1334{
1335 if (ev_is_active (w))
1336 { 1682 {
1337 if (w->repeat) 1683 if (w->repeat)
1684 {
1685 ((WT)w)->at = mn_now + w->repeat;
1338 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1686 adjustheap (timers, timercnt, ((W)w)->active - 1);
1687 }
1339 else 1688 else
1340 ev_timer_stop (EV_A_ w); 1689 ev_timer_stop (EV_A_ w);
1341 } 1690 }
1342 else if (w->repeat) 1691 else if (w->repeat)
1692 {
1693 w->at = w->repeat;
1343 ev_timer_start (EV_A_ w); 1694 ev_timer_start (EV_A_ w);
1695 }
1344} 1696}
1345 1697
1346void 1698#if EV_PERIODIC_ENABLE
1699void noinline
1347ev_periodic_start (EV_P_ struct ev_periodic *w) 1700ev_periodic_start (EV_P_ ev_periodic *w)
1348{ 1701{
1349 if (ev_is_active (w)) 1702 if (expect_false (ev_is_active (w)))
1350 return; 1703 return;
1351 1704
1352 if (w->reschedule_cb) 1705 if (w->reschedule_cb)
1353 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354 else if (w->interval) 1707 else if (w->interval)
1355 { 1708 {
1356 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.));
1357 /* 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 */
1358 ((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;
1359 } 1712 }
1713 else
1714 ((WT)w)->at = w->offset;
1360 1715
1361 ev_start (EV_A_ (W)w, ++periodiccnt); 1716 ev_start (EV_A_ (W)w, ++periodiccnt);
1362 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1363 periodics [periodiccnt - 1] = w; 1718 periodics [periodiccnt - 1] = (WT)w;
1364 upheap ((WT *)periodics, periodiccnt - 1); 1719 upheap (periodics, periodiccnt - 1);
1365 1720
1366 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1367} 1722}
1368 1723
1369void 1724void noinline
1370ev_periodic_stop (EV_P_ struct ev_periodic *w) 1725ev_periodic_stop (EV_P_ ev_periodic *w)
1371{ 1726{
1372 ev_clear_pending (EV_A_ (W)w); 1727 clear_pending (EV_A_ (W)w);
1373 if (!ev_is_active (w)) 1728 if (expect_false (!ev_is_active (w)))
1374 return; 1729 return;
1375 1730
1376 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1377 1732
1378 if (((W)w)->active < periodiccnt--) 1733 {
1734 int active = ((W)w)->active;
1735
1736 if (expect_true (--active < --periodiccnt))
1379 { 1737 {
1380 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1738 periodics [active] = periodics [periodiccnt];
1381 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1739 adjustheap (periodics, periodiccnt, active);
1382 } 1740 }
1741 }
1383 1742
1384 ev_stop (EV_A_ (W)w); 1743 ev_stop (EV_A_ (W)w);
1385} 1744}
1386 1745
1387void 1746void noinline
1388ev_periodic_again (EV_P_ struct ev_periodic *w) 1747ev_periodic_again (EV_P_ ev_periodic *w)
1389{ 1748{
1390 /* TODO: use adjustheap and recalculation */ 1749 /* TODO: use adjustheap and recalculation */
1391 ev_periodic_stop (EV_A_ w); 1750 ev_periodic_stop (EV_A_ w);
1392 ev_periodic_start (EV_A_ w); 1751 ev_periodic_start (EV_A_ w);
1393} 1752}
1394 1753#endif
1395void
1396ev_idle_start (EV_P_ struct ev_idle *w)
1397{
1398 if (ev_is_active (w))
1399 return;
1400
1401 ev_start (EV_A_ (W)w, ++idlecnt);
1402 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403 idles [idlecnt - 1] = w;
1404}
1405
1406void
1407ev_idle_stop (EV_P_ struct ev_idle *w)
1408{
1409 ev_clear_pending (EV_A_ (W)w);
1410 if (ev_is_active (w))
1411 return;
1412
1413 idles [((W)w)->active - 1] = idles [--idlecnt];
1414 ev_stop (EV_A_ (W)w);
1415}
1416
1417void
1418ev_prepare_start (EV_P_ struct ev_prepare *w)
1419{
1420 if (ev_is_active (w))
1421 return;
1422
1423 ev_start (EV_A_ (W)w, ++preparecnt);
1424 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425 prepares [preparecnt - 1] = w;
1426}
1427
1428void
1429ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430{
1431 ev_clear_pending (EV_A_ (W)w);
1432 if (ev_is_active (w))
1433 return;
1434
1435 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436 ev_stop (EV_A_ (W)w);
1437}
1438
1439void
1440ev_check_start (EV_P_ struct ev_check *w)
1441{
1442 if (ev_is_active (w))
1443 return;
1444
1445 ev_start (EV_A_ (W)w, ++checkcnt);
1446 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447 checks [checkcnt - 1] = w;
1448}
1449
1450void
1451ev_check_stop (EV_P_ struct ev_check *w)
1452{
1453 ev_clear_pending (EV_A_ (W)w);
1454 if (ev_is_active (w))
1455 return;
1456
1457 checks [((W)w)->active - 1] = checks [--checkcnt];
1458 ev_stop (EV_A_ (W)w);
1459}
1460 1754
1461#ifndef SA_RESTART 1755#ifndef SA_RESTART
1462# define SA_RESTART 0 1756# define SA_RESTART 0
1463#endif 1757#endif
1464 1758
1465void 1759void noinline
1466ev_signal_start (EV_P_ struct ev_signal *w) 1760ev_signal_start (EV_P_ ev_signal *w)
1467{ 1761{
1468#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1469 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));
1470#endif 1764#endif
1471 if (ev_is_active (w)) 1765 if (expect_false (ev_is_active (w)))
1472 return; 1766 return;
1473 1767
1474 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));
1475 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
1476 ev_start (EV_A_ (W)w, 1); 1784 ev_start (EV_A_ (W)w, 1);
1477 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1785 wlist_add (&signals [w->signum - 1].head, (WL)w);
1479 1786
1480 if (!((WL)w)->next) 1787 if (!((WL)w)->next)
1481 { 1788 {
1482#if WIN32 1789#if _WIN32
1483 signal (w->signum, sighandler); 1790 signal (w->signum, sighandler);
1484#else 1791#else
1485 struct sigaction sa; 1792 struct sigaction sa;
1486 sa.sa_handler = sighandler; 1793 sa.sa_handler = sighandler;
1487 sigfillset (&sa.sa_mask); 1794 sigfillset (&sa.sa_mask);
… …
1489 sigaction (w->signum, &sa, 0); 1796 sigaction (w->signum, &sa, 0);
1490#endif 1797#endif
1491 } 1798 }
1492} 1799}
1493 1800
1494void 1801void noinline
1495ev_signal_stop (EV_P_ struct ev_signal *w) 1802ev_signal_stop (EV_P_ ev_signal *w)
1496{ 1803{
1497 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1498 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1499 return; 1806 return;
1500 1807
1501 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1808 wlist_del (&signals [w->signum - 1].head, (WL)w);
1502 ev_stop (EV_A_ (W)w); 1809 ev_stop (EV_A_ (W)w);
1503 1810
1504 if (!signals [w->signum - 1].head) 1811 if (!signals [w->signum - 1].head)
1505 signal (w->signum, SIG_DFL); 1812 signal (w->signum, SIG_DFL);
1506} 1813}
1507 1814
1508void 1815void
1509ev_child_start (EV_P_ struct ev_child *w) 1816ev_child_start (EV_P_ ev_child *w)
1510{ 1817{
1511#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1512 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));
1513#endif 1820#endif
1514 if (ev_is_active (w)) 1821 if (expect_false (ev_is_active (w)))
1515 return; 1822 return;
1516 1823
1517 ev_start (EV_A_ (W)w, 1); 1824 ev_start (EV_A_ (W)w, 1);
1518 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519} 1826}
1520 1827
1521void 1828void
1522ev_child_stop (EV_P_ struct ev_child *w) 1829ev_child_stop (EV_P_ ev_child *w)
1523{ 1830{
1524 ev_clear_pending (EV_A_ (W)w); 1831 clear_pending (EV_A_ (W)w);
1525 if (ev_is_active (w)) 1832 if (expect_false (!ev_is_active (w)))
1526 return; 1833 return;
1527 1834
1528 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529 ev_stop (EV_A_ (W)w); 1836 ev_stop (EV_A_ (W)w);
1530} 1837}
1531 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_io_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
2201static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205
2206 fd_reify (w->other);
2207}
2208
2209void
2210ev_embed_start (EV_P_ ev_embed *w)
2211{
2212 if (expect_false (ev_is_active (w)))
2213 return;
2214
2215 {
2216 struct ev_loop *loop = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 }
2220
2221 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io);
2223
2224 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare);
2227
2228 ev_start (EV_A_ (W)w, 1);
2229}
2230
2231void
2232ev_embed_stop (EV_P_ ev_embed *w)
2233{
2234 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w)))
2236 return;
2237
2238 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare);
2240
2241 ev_stop (EV_A_ (W)w);
2242}
2243#endif
2244
2245#if EV_FORK_ENABLE
2246void
2247ev_fork_start (EV_P_ ev_fork *w)
2248{
2249 if (expect_false (ev_is_active (w)))
2250 return;
2251
2252 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w;
2255}
2256
2257void
2258ev_fork_stop (EV_P_ ev_fork *w)
2259{
2260 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w)))
2262 return;
2263
2264 {
2265 int active = ((W)w)->active;
2266 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active;
2268 }
2269
2270 ev_stop (EV_A_ (W)w);
2271}
2272#endif
2273
1532/*****************************************************************************/ 2274/*****************************************************************************/
1533 2275
1534struct ev_once 2276struct ev_once
1535{ 2277{
1536 struct ev_io io; 2278 ev_io io;
1537 struct ev_timer to; 2279 ev_timer to;
1538 void (*cb)(int revents, void *arg); 2280 void (*cb)(int revents, void *arg);
1539 void *arg; 2281 void *arg;
1540}; 2282};
1541 2283
1542static void 2284static void
… …
1551 2293
1552 cb (revents, arg); 2294 cb (revents, arg);
1553} 2295}
1554 2296
1555static void 2297static void
1556once_cb_io (EV_P_ struct ev_io *w, int revents) 2298once_cb_io (EV_P_ ev_io *w, int revents)
1557{ 2299{
1558 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559} 2301}
1560 2302
1561static void 2303static void
1562once_cb_to (EV_P_ struct ev_timer *w, int revents) 2304once_cb_to (EV_P_ ev_timer *w, int revents)
1563{ 2305{
1564 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565} 2307}
1566 2308
1567void 2309void
1568ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569{ 2311{
1570 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571 2313
1572 if (!once) 2314 if (expect_false (!once))
2315 {
1573 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574 else 2317 return;
1575 { 2318 }
2319
1576 once->cb = cb; 2320 once->cb = cb;
1577 once->arg = arg; 2321 once->arg = arg;
1578 2322
1579 ev_init (&once->io, once_cb_io); 2323 ev_init (&once->io, once_cb_io);
1580 if (fd >= 0) 2324 if (fd >= 0)
1581 { 2325 {
1582 ev_io_set (&once->io, fd, events); 2326 ev_io_set (&once->io, fd, events);
1583 ev_io_start (EV_A_ &once->io); 2327 ev_io_start (EV_A_ &once->io);
1584 } 2328 }
1585 2329
1586 ev_init (&once->to, once_cb_to); 2330 ev_init (&once->to, once_cb_to);
1587 if (timeout >= 0.) 2331 if (timeout >= 0.)
1588 { 2332 {
1589 ev_timer_set (&once->to, timeout, 0.); 2333 ev_timer_set (&once->to, timeout, 0.);
1590 ev_timer_start (EV_A_ &once->to); 2334 ev_timer_start (EV_A_ &once->to);
1591 }
1592 } 2335 }
1593} 2336}
1594 2337
2338#if EV_MULTIPLICITY
2339 #include "ev_wrap.h"
2340#endif
2341
2342#ifdef __cplusplus
2343}
2344#endif
2345

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