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Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs.
Revision 1.186 by root, Sat Dec 15 23:14:38 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>
… …
64#include <assert.h> 116#include <assert.h>
65#include <errno.h> 117#include <errno.h>
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#ifndef PERL
70# include <signal.h> 121#include <signal.h>
71#endif
72 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
73#ifndef WIN32 129#ifndef _WIN32
74# include <unistd.h>
75# include <sys/time.h> 130# include <sys/time.h>
76# 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
77#endif 138# endif
139#endif
140
78/**/ 141/**/
79 142
80#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
81# 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
82#endif 149#endif
83 150
84#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
85# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
86#endif 153#endif
87 154
88#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
89# 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
90#endif 161#endif
91 162
92#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
93# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
94#endif 165#endif
95 166
96#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
97# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
98#endif 169#endif
99 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
100#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
101# ifdef WIN32 176# define EV_USE_INOTIFY 0
102# define EV_USE_WIN32 0 /* it does not exist, use select */ 177#endif
103# undef EV_USE_SELECT 178
104# define EV_USE_SELECT 1 179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
105# else 182# else
106# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
107# endif 184# endif
108#endif 185#endif
109 186
110#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
111# 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
112#endif 193#endif
113 194
114/**/ 195/**/
115 196
116#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
121#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
122# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
123# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
124#endif 205#endif
125 206
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
126/**/ 220/**/
127 221
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
128#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) */
129#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) */
130#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
131/*#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 */
132 235
133#include "ev.h"
134
135#if __GNUC__ >= 3 236#if __GNUC__ >= 4
136# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
137# define inline inline 238# define noinline __attribute__ ((noinline))
138#else 239#else
139# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
140# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
141#endif 245#endif
142 246
143#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
144#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
145 256
146#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
148 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
149typedef struct ev_watcher *W; 263typedef ev_watcher *W;
150typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
151typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
152 266
153static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154 268
155#if WIN32 269#ifdef _WIN32
156/* note: the comment below could not be substantiated, but what would I care */ 270# include "ev_win32.c"
157/* MSDN says this is required to handle SIGFPE */
158volatile double SIGFPE_REQ = 0.0f;
159#endif 271#endif
160 272
161/*****************************************************************************/ 273/*****************************************************************************/
162 274
163static void (*syserr_cb)(const char *msg); 275static void (*syserr_cb)(const char *msg);
164 276
277void
165void ev_set_syserr_cb (void (*cb)(const char *msg)) 278ev_set_syserr_cb (void (*cb)(const char *msg))
166{ 279{
167 syserr_cb = cb; 280 syserr_cb = cb;
168} 281}
169 282
170static void 283static void noinline
171syserr (const char *msg) 284syserr (const char *msg)
172{ 285{
173 if (!msg) 286 if (!msg)
174 msg = "(libev) system error"; 287 msg = "(libev) system error";
175 288
… …
182 } 295 }
183} 296}
184 297
185static void *(*alloc)(void *ptr, long size); 298static void *(*alloc)(void *ptr, long size);
186 299
300void
187void ev_set_allocator (void *(*cb)(void *ptr, long size)) 301ev_set_allocator (void *(*cb)(void *ptr, long size))
188{ 302{
189 alloc = cb; 303 alloc = cb;
190} 304}
191 305
192static void * 306inline_speed void *
193ev_realloc (void *ptr, long size) 307ev_realloc (void *ptr, long size)
194{ 308{
195 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
196 310
197 if (!ptr && size) 311 if (!ptr && size)
… …
211typedef struct 325typedef struct
212{ 326{
213 WL head; 327 WL head;
214 unsigned char events; 328 unsigned char events;
215 unsigned char reify; 329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
216} ANFD; 333} ANFD;
217 334
218typedef struct 335typedef struct
219{ 336{
220 W w; 337 W w;
221 int events; 338 int events;
222} ANPENDING; 339} ANPENDING;
223 340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
224#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
225 349
226struct ev_loop 350 struct ev_loop
227{ 351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
228# define VAR(name,decl) decl; 354 #define VAR(name,decl) decl;
229# include "ev_vars.h" 355 #include "ev_vars.h"
230};
231# undef VAR 356 #undef VAR
357 };
232# 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;
233 362
234#else 363#else
235 364
365 ev_tstamp ev_rt_now;
236# define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
237# include "ev_vars.h" 367 #include "ev_vars.h"
238# undef VAR 368 #undef VAR
369
370 static int ev_default_loop_ptr;
239 371
240#endif 372#endif
241 373
242/*****************************************************************************/ 374/*****************************************************************************/
243 375
244inline ev_tstamp 376ev_tstamp
245ev_time (void) 377ev_time (void)
246{ 378{
247#if EV_USE_REALTIME 379#if EV_USE_REALTIME
248 struct timespec ts; 380 struct timespec ts;
249 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
253 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
254 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
255#endif 387#endif
256} 388}
257 389
258inline ev_tstamp 390ev_tstamp inline_size
259get_clock (void) 391get_clock (void)
260{ 392{
261#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
262 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
263 { 395 {
… …
268#endif 400#endif
269 401
270 return ev_time (); 402 return ev_time ();
271} 403}
272 404
405#if EV_MULTIPLICITY
273ev_tstamp 406ev_tstamp
274ev_now (EV_P) 407ev_now (EV_P)
275{ 408{
276 return rt_now; 409 return ev_rt_now;
277} 410}
411#endif
278 412
279#define array_roundsize(base,n) ((n) | 4 & ~3) 413int inline_size
414array_nextsize (int elem, int cur, int cnt)
415{
416 int ncur = cur + 1;
280 417
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}
440
281#define array_needsize(base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
282 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
283 { \ 443 { \
284 int newcnt = cur; \ 444 int ocur_ = (cur); \
285 do \ 445 (base) = (type *)array_realloc \
286 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
287 newcnt = array_roundsize (base, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
288 } \
289 while ((cnt) > newcnt); \
290 \
291 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
292 init (base + cur, newcnt - cur); \
293 cur = newcnt; \
294 } 448 }
295 449
450#if 0
296#define array_slim(stem) \ 451#define array_slim(type,stem) \
297 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298 { \ 453 { \
299 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
300 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302 } 457 }
303 458#endif
304/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306#define array_free_microshit(stem) \
307 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308 459
309#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
310 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;
311 462
312/*****************************************************************************/ 463/*****************************************************************************/
313 464
314static 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
315anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
316{ 495{
317 while (count--) 496 while (count--)
318 { 497 {
319 base->head = 0; 498 base->head = 0;
… …
322 501
323 ++base; 502 ++base;
324 } 503 }
325} 504}
326 505
327static void 506void inline_speed
328event (EV_P_ W w, int events)
329{
330 if (w->pending)
331 {
332 pendings [ABSPRI (w)][w->pending - 1].events |= events;
333 return;
334 }
335
336 w->pending = ++pendingcnt [ABSPRI (w)];
337 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
338 pendings [ABSPRI (w)][w->pending - 1].w = w;
339 pendings [ABSPRI (w)][w->pending - 1].events = events;
340}
341
342static void
343queue_events (EV_P_ W *events, int eventcnt, int type)
344{
345 int i;
346
347 for (i = 0; i < eventcnt; ++i)
348 event (EV_A_ events [i], type);
349}
350
351static void
352fd_event (EV_P_ int fd, int events) 507fd_event (EV_P_ int fd, int revents)
353{ 508{
354 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
355 struct ev_io *w; 510 ev_io *w;
356 511
357 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)
358 { 513 {
359 int ev = w->events & events; 514 int ev = w->events & revents;
360 515
361 if (ev) 516 if (ev)
362 event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
363 } 518 }
364} 519}
365 520
366/*****************************************************************************/ 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}
367 527
368static void 528void inline_size
369fd_reify (EV_P) 529fd_reify (EV_P)
370{ 530{
371 int i; 531 int i;
372 532
373 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
374 { 534 {
375 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
376 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
377 struct ev_io *w; 537 ev_io *w;
378 538
379 int events = 0; 539 unsigned char events = 0;
380 540
381 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)
382 events |= w->events; 542 events |= (unsigned char)w->events;
383 543
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
384 anfd->reify = 0; 557 anfd->reify = 0;
385
386 method_modify (EV_A_ fd, anfd->events, events);
387 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 }
388 } 563 }
389 564
390 fdchangecnt = 0; 565 fdchangecnt = 0;
391} 566}
392 567
393static void 568void inline_size
394fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
395{ 570{
396 if (anfds [fd].reify) 571 unsigned char reify = anfds [fd].reify;
397 return;
398
399 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
400 573
574 if (expect_true (!reify))
575 {
401 ++fdchangecnt; 576 ++fdchangecnt;
402 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void)); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
404} 580}
405 581
406static void 582void inline_speed
407fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
408{ 584{
409 struct ev_io *w; 585 ev_io *w;
410 586
411 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
412 { 588 {
413 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
414 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);
415 } 591 }
416} 592}
417 593
418static int 594int inline_size
419fd_valid (int fd) 595fd_valid (int fd)
420{ 596{
421#ifdef WIN32 597#ifdef _WIN32
422 return !!win32_get_osfhandle (fd); 598 return _get_osfhandle (fd) != -1;
423#else 599#else
424 return fcntl (fd, F_GETFD) != -1; 600 return fcntl (fd, F_GETFD) != -1;
425#endif 601#endif
426} 602}
427 603
428/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
429static void 605static void noinline
430fd_ebadf (EV_P) 606fd_ebadf (EV_P)
431{ 607{
432 int fd; 608 int fd;
433 609
434 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
… …
436 if (!fd_valid (fd) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
437 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
438} 614}
439 615
440/* 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 */
441static void 617static void noinline
442fd_enomem (EV_P) 618fd_enomem (EV_P)
443{ 619{
444 int fd; 620 int fd;
445 621
446 for (fd = anfdmax; fd--; ) 622 for (fd = anfdmax; fd--; )
… …
449 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
450 return; 626 return;
451 } 627 }
452} 628}
453 629
454/* 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 */
455static void 631static void noinline
456fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
457{ 633{
458 int fd; 634 int fd;
459 635
460 /* this should be highly optimised to not do anything but set a flag */
461 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
462 if (anfds [fd].events) 637 if (anfds [fd].events)
463 { 638 {
464 anfds [fd].events = 0; 639 anfds [fd].events = 0;
465 fd_change (EV_A_ fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
466 } 641 }
467} 642}
468 643
469/*****************************************************************************/ 644/*****************************************************************************/
470 645
471static void 646void inline_speed
472upheap (WT *heap, int k) 647upheap (WT *heap, int k)
473{ 648{
474 WT w = heap [k]; 649 WT w = heap [k];
475 650
476 while (k && heap [k >> 1]->at > w->at) 651 while (k)
477 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
478 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
479 ((W)heap [k])->active = k + 1; 659 ((W)heap [k])->active = k + 1;
480 k >>= 1; 660 k = p;
481 } 661 }
482 662
483 heap [k] = w; 663 heap [k] = w;
484 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
485
486} 665}
487 666
488static void 667void inline_speed
489downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
490{ 669{
491 WT w = heap [k]; 670 WT w = heap [k];
492 671
493 while (k < (N >> 1)) 672 for (;;)
494 { 673 {
495 int j = k << 1; 674 int c = (k << 1) + 1;
496 675
497 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
498 ++j;
499
500 if (w->at <= heap [j]->at)
501 break; 677 break;
502 678
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
503 heap [k] = heap [j]; 685 heap [k] = heap [c];
504 ((W)heap [k])->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
505 k = j; 688 k = c;
506 } 689 }
507 690
508 heap [k] = w; 691 heap [k] = w;
509 ((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);
510} 700}
511 701
512/*****************************************************************************/ 702/*****************************************************************************/
513 703
514typedef struct 704typedef struct
… …
520static ANSIG *signals; 710static ANSIG *signals;
521static int signalmax; 711static int signalmax;
522 712
523static int sigpipe [2]; 713static int sigpipe [2];
524static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
525static struct ev_io sigev; 715static ev_io sigev;
526 716
527static void 717void inline_size
528signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
529{ 719{
530 while (count--) 720 while (count--)
531 { 721 {
532 base->head = 0; 722 base->head = 0;
… …
537} 727}
538 728
539static void 729static void
540sighandler (int signum) 730sighandler (int signum)
541{ 731{
542#if WIN32 732#if _WIN32
543 signal (signum, sighandler); 733 signal (signum, sighandler);
544#endif 734#endif
545 735
546 signals [signum - 1].gotsig = 1; 736 signals [signum - 1].gotsig = 1;
547 737
… …
552 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
553 errno = old_errno; 743 errno = old_errno;
554 } 744 }
555} 745}
556 746
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
557static void 767static void
558sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
559{ 769{
560 WL w;
561 int signum; 770 int signum;
562 771
563 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
564 gotsig = 0; 773 gotsig = 0;
565 774
566 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
567 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
568 { 777 ev_feed_signal_event (EV_A_ signum + 1);
569 signals [signum].gotsig = 0;
570
571 for (w = signals [signum].head; w; w = w->next)
572 event (EV_A_ (W)w, EV_SIGNAL);
573 }
574} 778}
575 779
576static 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
577siginit (EV_P) 793siginit (EV_P)
578{ 794{
579#ifndef WIN32 795 fd_intern (sigpipe [0]);
580 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 796 fd_intern (sigpipe [1]);
581 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
582
583 /* rather than sort out wether we really need nb, set it */
584 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
585 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
586#endif
587 797
588 ev_io_set (&sigev, sigpipe [0], EV_READ); 798 ev_io_set (&sigev, sigpipe [0], EV_READ);
589 ev_io_start (EV_A_ &sigev); 799 ev_io_start (EV_A_ &sigev);
590 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
591} 801}
592 802
593/*****************************************************************************/ 803/*****************************************************************************/
594 804
595static struct ev_child *childs [PID_HASHSIZE]; 805static WL childs [EV_PID_HASHSIZE];
596 806
597#ifndef WIN32 807#ifndef _WIN32
598 808
599static 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}
600 825
601#ifndef WCONTINUED 826#ifndef WCONTINUED
602# define WCONTINUED 0 827# define WCONTINUED 0
603#endif 828#endif
604 829
605static void 830static void
606child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
607{
608 struct ev_child *w;
609
610 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
611 if (w->pid == pid || !w->pid)
612 {
613 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614 w->rpid = pid;
615 w->rstatus = status;
616 event (EV_A_ (W)w, EV_CHILD);
617 }
618}
619
620static void
621childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
622{ 832{
623 int pid, status; 833 int pid, status;
624 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
627 /* 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 */
628 event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629 845
630 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
631 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 */
632 }
633} 849}
634 850
635#endif 851#endif
636 852
637/*****************************************************************************/ 853/*****************************************************************************/
638 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
639#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
640# include "ev_kqueue.c" 859# include "ev_kqueue.c"
641#endif 860#endif
642#if EV_USE_EPOLL 861#if EV_USE_EPOLL
643# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
660{ 879{
661 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
662} 881}
663 882
664/* 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 */
665static int 884int inline_size
666enable_secure (void) 885enable_secure (void)
667{ 886{
668#ifdef WIN32 887#ifdef _WIN32
669 return 0; 888 return 0;
670#else 889#else
671 return getuid () != geteuid () 890 return getuid () != geteuid ()
672 || getgid () != getegid (); 891 || getgid () != getegid ();
673#endif 892#endif
674} 893}
675 894
676int 895unsigned int
677ev_method (EV_P) 896ev_supported_backends (void)
678{ 897{
679 return method; 898 unsigned int flags = 0;
680}
681 899
682static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
683loop_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)
684{ 911{
685 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)
686 { 951 {
687#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
688 { 953 {
689 struct timespec ts; 954 struct timespec ts;
690 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691 have_monotonic = 1; 956 have_monotonic = 1;
692 } 957 }
693#endif 958#endif
694 959
695 rt_now = ev_time (); 960 ev_rt_now = ev_time ();
696 mn_now = get_clock (); 961 mn_now = get_clock ();
697 now_floor = mn_now; 962 now_floor = mn_now;
698 rtmn_diff = rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
699 964
700 if (methods == EVMETHOD_AUTO) 965 /* pid check not overridable via env */
701 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"))
702 methods = atoi (getenv ("LIBEV_METHODS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
703 else
704 methods = EVMETHOD_ANY;
705 975
706 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
707#if EV_USE_WIN32 981#if EV_USE_INOTIFY
708 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);
709#endif 987#endif
710#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
711 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712#endif 990#endif
713#if EV_USE_EPOLL 991#if EV_USE_EPOLL
714 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715#endif 993#endif
716#if EV_USE_POLL 994#if EV_USE_POLL
717 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718#endif 996#endif
719#if EV_USE_SELECT 997#if EV_USE_SELECT
720 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721#endif 999#endif
722 1000
723 ev_watcher_init (&sigev, sigcb); 1001 ev_init (&sigev, sigcb);
724 ev_set_priority (&sigev, EV_MAXPRI); 1002 ev_set_priority (&sigev, EV_MAXPRI);
725 } 1003 }
726} 1004}
727 1005
728void 1006static void noinline
729loop_destroy (EV_P) 1007loop_destroy (EV_P)
730{ 1008{
731 int i; 1009 int i;
732 1010
733#if EV_USE_WIN32 1011#if EV_USE_INOTIFY
734 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);
735#endif 1021#endif
736#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
737 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738#endif 1024#endif
739#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
740 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741#endif 1027#endif
742#if EV_USE_POLL 1028#if EV_USE_POLL
743 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744#endif 1030#endif
745#if EV_USE_SELECT 1031#if EV_USE_SELECT
746 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747#endif 1033#endif
748 1034
749 for (i = NUMPRI; i--; ) 1035 for (i = NUMPRI; i--; )
1036 {
750 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;
751 1044
752 /* have to use the microsoft-never-gets-it-right macro */ 1045 /* have to use the microsoft-never-gets-it-right macro */
753 array_free_microshit (fdchange); 1046 array_free (fdchange, EMPTY);
754 array_free_microshit (timer); 1047 array_free (timer, EMPTY);
755 array_free_microshit (periodic); 1048#if EV_PERIODIC_ENABLE
756 array_free_microshit (idle); 1049 array_free (periodic, EMPTY);
757 array_free_microshit (prepare); 1050#endif
758 array_free_microshit (check); 1051 array_free (prepare, EMPTY);
1052 array_free (check, EMPTY);
1053 array_free (fork, EMPTY);
759 1054
760 method = 0; 1055 backend = 0;
761} 1056}
762 1057
763static void 1058void inline_size infy_fork (EV_P);
1059
1060void inline_size
764loop_fork (EV_P) 1061loop_fork (EV_P)
765{ 1062{
1063#if EV_USE_PORT
1064 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1065#endif
1066#if EV_USE_KQUEUE
1067 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1068#endif
766#if EV_USE_EPOLL 1069#if EV_USE_EPOLL
767 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1070 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768#endif 1071#endif
769#if EV_USE_KQUEUE 1072#if EV_USE_INOTIFY
770 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1073 infy_fork (EV_A);
771#endif 1074#endif
772 1075
773 if (ev_is_active (&sigev)) 1076 if (ev_is_active (&sigev))
774 { 1077 {
775 /* default loop */ 1078 /* default loop */
… …
788 postfork = 0; 1091 postfork = 0;
789} 1092}
790 1093
791#if EV_MULTIPLICITY 1094#if EV_MULTIPLICITY
792struct ev_loop * 1095struct ev_loop *
793ev_loop_new (int methods) 1096ev_loop_new (unsigned int flags)
794{ 1097{
795 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1098 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796 1099
797 memset (loop, 0, sizeof (struct ev_loop)); 1100 memset (loop, 0, sizeof (struct ev_loop));
798 1101
799 loop_init (EV_A_ methods); 1102 loop_init (EV_A_ flags);
800 1103
801 if (ev_method (EV_A)) 1104 if (ev_backend (EV_A))
802 return loop; 1105 return loop;
803 1106
804 return 0; 1107 return 0;
805} 1108}
806 1109
… …
818} 1121}
819 1122
820#endif 1123#endif
821 1124
822#if EV_MULTIPLICITY 1125#if EV_MULTIPLICITY
823struct ev_loop default_loop_struct;
824static struct ev_loop *default_loop;
825
826struct ev_loop * 1126struct ev_loop *
1127ev_default_loop_init (unsigned int flags)
827#else 1128#else
828static int default_loop;
829
830int 1129int
1130ev_default_loop (unsigned int flags)
831#endif 1131#endif
832ev_default_loop (int methods)
833{ 1132{
834 if (sigpipe [0] == sigpipe [1]) 1133 if (sigpipe [0] == sigpipe [1])
835 if (pipe (sigpipe)) 1134 if (pipe (sigpipe))
836 return 0; 1135 return 0;
837 1136
838 if (!default_loop) 1137 if (!ev_default_loop_ptr)
839 { 1138 {
840#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
841 struct ev_loop *loop = default_loop = &default_loop_struct; 1140 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842#else 1141#else
843 default_loop = 1; 1142 ev_default_loop_ptr = 1;
844#endif 1143#endif
845 1144
846 loop_init (EV_A_ methods); 1145 loop_init (EV_A_ flags);
847 1146
848 if (ev_method (EV_A)) 1147 if (ev_backend (EV_A))
849 { 1148 {
850 siginit (EV_A); 1149 siginit (EV_A);
851 1150
852#ifndef WIN32 1151#ifndef _WIN32
853 ev_signal_init (&childev, childcb, SIGCHLD); 1152 ev_signal_init (&childev, childcb, SIGCHLD);
854 ev_set_priority (&childev, EV_MAXPRI); 1153 ev_set_priority (&childev, EV_MAXPRI);
855 ev_signal_start (EV_A_ &childev); 1154 ev_signal_start (EV_A_ &childev);
856 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1155 ev_unref (EV_A); /* child watcher should not keep loop alive */
857#endif 1156#endif
858 } 1157 }
859 else 1158 else
860 default_loop = 0; 1159 ev_default_loop_ptr = 0;
861 } 1160 }
862 1161
863 return default_loop; 1162 return ev_default_loop_ptr;
864} 1163}
865 1164
866void 1165void
867ev_default_destroy (void) 1166ev_default_destroy (void)
868{ 1167{
869#if EV_MULTIPLICITY 1168#if EV_MULTIPLICITY
870 struct ev_loop *loop = default_loop; 1169 struct ev_loop *loop = ev_default_loop_ptr;
871#endif 1170#endif
872 1171
873#ifndef WIN32 1172#ifndef _WIN32
874 ev_ref (EV_A); /* child watcher */ 1173 ev_ref (EV_A); /* child watcher */
875 ev_signal_stop (EV_A_ &childev); 1174 ev_signal_stop (EV_A_ &childev);
876#endif 1175#endif
877 1176
878 ev_ref (EV_A); /* signal watcher */ 1177 ev_ref (EV_A); /* signal watcher */
… …
886 1185
887void 1186void
888ev_default_fork (void) 1187ev_default_fork (void)
889{ 1188{
890#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
891 struct ev_loop *loop = default_loop; 1190 struct ev_loop *loop = ev_default_loop_ptr;
892#endif 1191#endif
893 1192
894 if (method) 1193 if (backend)
895 postfork = 1; 1194 postfork = 1;
896} 1195}
897 1196
898/*****************************************************************************/ 1197/*****************************************************************************/
899 1198
900static void 1199void
1200ev_invoke (EV_P_ void *w, int revents)
1201{
1202 EV_CB_INVOKE ((W)w, revents);
1203}
1204
1205void inline_speed
901call_pending (EV_P) 1206call_pending (EV_P)
902{ 1207{
903 int pri; 1208 int pri;
904 1209
905 for (pri = NUMPRI; pri--; ) 1210 for (pri = NUMPRI; pri--; )
906 while (pendingcnt [pri]) 1211 while (pendingcnt [pri])
907 { 1212 {
908 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1213 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909 1214
910 if (p->w) 1215 if (expect_true (p->w))
911 { 1216 {
1217 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1218
912 p->w->pending = 0; 1219 p->w->pending = 0;
913 p->w->cb (EV_A_ p->w, p->events); 1220 EV_CB_INVOKE (p->w, p->events);
914 } 1221 }
915 } 1222 }
916} 1223}
917 1224
918static void 1225void inline_size
919timers_reify (EV_P) 1226timers_reify (EV_P)
920{ 1227{
921 while (timercnt && ((WT)timers [0])->at <= mn_now) 1228 while (timercnt && ((WT)timers [0])->at <= mn_now)
922 { 1229 {
923 struct ev_timer *w = timers [0]; 1230 ev_timer *w = (ev_timer *)timers [0];
924 1231
925 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1232 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
926 1233
927 /* first reschedule or stop timer */ 1234 /* first reschedule or stop timer */
928 if (w->repeat) 1235 if (w->repeat)
929 { 1236 {
930 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1237 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1238
931 ((WT)w)->at = mn_now + w->repeat; 1239 ((WT)w)->at += w->repeat;
1240 if (((WT)w)->at < mn_now)
1241 ((WT)w)->at = mn_now;
1242
932 downheap ((WT *)timers, timercnt, 0); 1243 downheap (timers, timercnt, 0);
933 } 1244 }
934 else 1245 else
935 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1246 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936 1247
937 event (EV_A_ (W)w, EV_TIMEOUT); 1248 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938 } 1249 }
939} 1250}
940 1251
941static void 1252#if EV_PERIODIC_ENABLE
1253void inline_size
942periodics_reify (EV_P) 1254periodics_reify (EV_P)
943{ 1255{
944 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1256 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945 { 1257 {
946 struct ev_periodic *w = periodics [0]; 1258 ev_periodic *w = (ev_periodic *)periodics [0];
947 1259
948 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1260 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
949 1261
950 /* first reschedule or stop timer */ 1262 /* first reschedule or stop timer */
951 if (w->interval) 1263 if (w->reschedule_cb)
952 { 1264 {
1265 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1266 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1267 downheap (periodics, periodiccnt, 0);
1268 }
1269 else if (w->interval)
1270 {
953 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1271 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1272 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
954 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1273 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955 downheap ((WT *)periodics, periodiccnt, 0); 1274 downheap (periodics, periodiccnt, 0);
956 } 1275 }
957 else 1276 else
958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1277 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959 1278
960 event (EV_A_ (W)w, EV_PERIODIC); 1279 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961 } 1280 }
962} 1281}
963 1282
964static void 1283static void noinline
965periodics_reschedule (EV_P) 1284periodics_reschedule (EV_P)
966{ 1285{
967 int i; 1286 int i;
968 1287
969 /* adjust periodics after time jump */ 1288 /* adjust periodics after time jump */
970 for (i = 0; i < periodiccnt; ++i) 1289 for (i = 0; i < periodiccnt; ++i)
971 { 1290 {
972 struct ev_periodic *w = periodics [i]; 1291 ev_periodic *w = (ev_periodic *)periodics [i];
973 1292
1293 if (w->reschedule_cb)
1294 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974 if (w->interval) 1295 else if (w->interval)
1296 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1297 }
1298
1299 /* now rebuild the heap */
1300 for (i = periodiccnt >> 1; i--; )
1301 downheap (periodics, periodiccnt, i);
1302}
1303#endif
1304
1305#if EV_IDLE_ENABLE
1306void inline_size
1307idle_reify (EV_P)
1308{
1309 if (expect_false (idleall))
1310 {
1311 int pri;
1312
1313 for (pri = NUMPRI; pri--; )
975 { 1314 {
976 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1315 if (pendingcnt [pri])
1316 break;
977 1317
978 if (fabs (diff) >= 1e-4) 1318 if (idlecnt [pri])
979 { 1319 {
980 ev_periodic_stop (EV_A_ w); 1320 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
981 ev_periodic_start (EV_A_ w); 1321 break;
982
983 i = 0; /* restart loop, inefficient, but time jumps should be rare */
984 } 1322 }
985 } 1323 }
986 } 1324 }
987} 1325}
1326#endif
988 1327
989inline int 1328void inline_speed
990time_update_monotonic (EV_P) 1329time_update (EV_P_ ev_tstamp max_block)
991{
992 mn_now = get_clock ();
993
994 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995 {
996 rt_now = rtmn_diff + mn_now;
997 return 0;
998 }
999 else
1000 {
1001 now_floor = mn_now;
1002 rt_now = ev_time ();
1003 return 1;
1004 }
1005}
1006
1007static void
1008time_update (EV_P)
1009{ 1330{
1010 int i; 1331 int i;
1011 1332
1012#if EV_USE_MONOTONIC 1333#if EV_USE_MONOTONIC
1013 if (expect_true (have_monotonic)) 1334 if (expect_true (have_monotonic))
1014 { 1335 {
1015 if (time_update_monotonic (EV_A)) 1336 ev_tstamp odiff = rtmn_diff;
1337
1338 mn_now = get_clock ();
1339
1340 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1341 /* interpolate in the meantime */
1342 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1016 { 1343 {
1017 ev_tstamp odiff = rtmn_diff; 1344 ev_rt_now = rtmn_diff + mn_now;
1345 return;
1346 }
1018 1347
1348 now_floor = mn_now;
1349 ev_rt_now = ev_time ();
1350
1019 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1351 /* loop a few times, before making important decisions.
1352 * on the choice of "4": one iteration isn't enough,
1353 * in case we get preempted during the calls to
1354 * ev_time and get_clock. a second call is almost guaranteed
1355 * to succeed in that case, though. and looping a few more times
1356 * doesn't hurt either as we only do this on time-jumps or
1357 * in the unlikely event of having been preempted here.
1358 */
1359 for (i = 4; --i; )
1020 { 1360 {
1021 rtmn_diff = rt_now - mn_now; 1361 rtmn_diff = ev_rt_now - mn_now;
1022 1362
1023 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1363 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024 return; /* all is well */ 1364 return; /* all is well */
1025 1365
1026 rt_now = ev_time (); 1366 ev_rt_now = ev_time ();
1027 mn_now = get_clock (); 1367 mn_now = get_clock ();
1028 now_floor = mn_now; 1368 now_floor = mn_now;
1029 } 1369 }
1030 1370
1371# if EV_PERIODIC_ENABLE
1372 periodics_reschedule (EV_A);
1373# endif
1374 /* no timer adjustment, as the monotonic clock doesn't jump */
1375 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1376 }
1377 else
1378#endif
1379 {
1380 ev_rt_now = ev_time ();
1381
1382 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1383 {
1384#if EV_PERIODIC_ENABLE
1031 periodics_reschedule (EV_A); 1385 periodics_reschedule (EV_A);
1032 /* no timer adjustment, as the monotonic clock doesn't jump */ 1386#endif
1033 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1387 /* adjust timers. this is easy, as the offset is the same for all of them */
1388 for (i = 0; i < timercnt; ++i)
1389 ((WT)timers [i])->at += ev_rt_now - mn_now;
1034 } 1390 }
1035 }
1036 else
1037#endif
1038 {
1039 rt_now = ev_time ();
1040 1391
1041 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042 {
1043 periodics_reschedule (EV_A);
1044
1045 /* adjust timers. this is easy, as the offset is the same for all */
1046 for (i = 0; i < timercnt; ++i)
1047 ((WT)timers [i])->at += rt_now - mn_now;
1048 }
1049
1050 mn_now = rt_now; 1392 mn_now = ev_rt_now;
1051 } 1393 }
1052} 1394}
1053 1395
1054void 1396void
1055ev_ref (EV_P) 1397ev_ref (EV_P)
… …
1066static int loop_done; 1408static int loop_done;
1067 1409
1068void 1410void
1069ev_loop (EV_P_ int flags) 1411ev_loop (EV_P_ int flags)
1070{ 1412{
1071 double block;
1072 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1413 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1414 ? EVUNLOOP_ONE
1415 : EVUNLOOP_CANCEL;
1416
1417 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1073 1418
1074 do 1419 do
1075 { 1420 {
1421#ifndef _WIN32
1422 if (expect_false (curpid)) /* penalise the forking check even more */
1423 if (expect_false (getpid () != curpid))
1424 {
1425 curpid = getpid ();
1426 postfork = 1;
1427 }
1428#endif
1429
1430#if EV_FORK_ENABLE
1431 /* we might have forked, so queue fork handlers */
1432 if (expect_false (postfork))
1433 if (forkcnt)
1434 {
1435 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1436 call_pending (EV_A);
1437 }
1438#endif
1439
1076 /* queue check watchers (and execute them) */ 1440 /* queue prepare watchers (and execute them) */
1077 if (expect_false (preparecnt)) 1441 if (expect_false (preparecnt))
1078 { 1442 {
1079 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1443 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1080 call_pending (EV_A); 1444 call_pending (EV_A);
1081 } 1445 }
1082 1446
1447 if (expect_false (!activecnt))
1448 break;
1449
1083 /* we might have forked, so reify kernel state if necessary */ 1450 /* we might have forked, so reify kernel state if necessary */
1084 if (expect_false (postfork)) 1451 if (expect_false (postfork))
1085 loop_fork (EV_A); 1452 loop_fork (EV_A);
1086 1453
1087 /* update fd-related kernel structures */ 1454 /* update fd-related kernel structures */
1088 fd_reify (EV_A); 1455 fd_reify (EV_A);
1089 1456
1090 /* calculate blocking time */ 1457 /* calculate blocking time */
1458 {
1459 ev_tstamp block;
1091 1460
1092 /* we only need this for !monotonic clockor timers, but as we basically 1461 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1093 always have timers, we just calculate it always */ 1462 block = 0.; /* do not block at all */
1094#if EV_USE_MONOTONIC
1095 if (expect_true (have_monotonic))
1096 time_update_monotonic (EV_A);
1097 else 1463 else
1098#endif
1099 { 1464 {
1100 rt_now = ev_time (); 1465 /* update time to cancel out callback processing overhead */
1101 mn_now = rt_now; 1466 time_update (EV_A_ 1e100);
1102 }
1103 1467
1104 if (flags & EVLOOP_NONBLOCK || idlecnt)
1105 block = 0.;
1106 else
1107 {
1108 block = MAX_BLOCKTIME; 1468 block = MAX_BLOCKTIME;
1109 1469
1110 if (timercnt) 1470 if (timercnt)
1111 { 1471 {
1112 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1472 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113 if (block > to) block = to; 1473 if (block > to) block = to;
1114 } 1474 }
1115 1475
1476#if EV_PERIODIC_ENABLE
1116 if (periodiccnt) 1477 if (periodiccnt)
1117 { 1478 {
1118 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1479 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119 if (block > to) block = to; 1480 if (block > to) block = to;
1120 } 1481 }
1482#endif
1121 1483
1122 if (block < 0.) block = 0.; 1484 if (expect_false (block < 0.)) block = 0.;
1123 } 1485 }
1124 1486
1487 ++loop_count;
1125 method_poll (EV_A_ block); 1488 backend_poll (EV_A_ block);
1126 1489
1127 /* update rt_now, do magic */ 1490 /* update ev_rt_now, do magic */
1128 time_update (EV_A); 1491 time_update (EV_A_ block);
1492 }
1129 1493
1130 /* queue pending timers and reschedule them */ 1494 /* queue pending timers and reschedule them */
1131 timers_reify (EV_A); /* relative timers called last */ 1495 timers_reify (EV_A); /* relative timers called last */
1496#if EV_PERIODIC_ENABLE
1132 periodics_reify (EV_A); /* absolute timers called first */ 1497 periodics_reify (EV_A); /* absolute timers called first */
1498#endif
1133 1499
1500#if EV_IDLE_ENABLE
1134 /* queue idle watchers unless io or timers are pending */ 1501 /* queue idle watchers unless other events are pending */
1135 if (!pendingcnt) 1502 idle_reify (EV_A);
1136 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1503#endif
1137 1504
1138 /* queue check watchers, to be executed first */ 1505 /* queue check watchers, to be executed first */
1139 if (checkcnt) 1506 if (expect_false (checkcnt))
1140 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1507 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141 1508
1142 call_pending (EV_A); 1509 call_pending (EV_A);
1510
1143 } 1511 }
1144 while (activecnt && !loop_done); 1512 while (expect_true (activecnt && !loop_done));
1145 1513
1146 if (loop_done != 2) 1514 if (loop_done == EVUNLOOP_ONE)
1147 loop_done = 0; 1515 loop_done = EVUNLOOP_CANCEL;
1148} 1516}
1149 1517
1150void 1518void
1151ev_unloop (EV_P_ int how) 1519ev_unloop (EV_P_ int how)
1152{ 1520{
1153 loop_done = how; 1521 loop_done = how;
1154} 1522}
1155 1523
1156/*****************************************************************************/ 1524/*****************************************************************************/
1157 1525
1158inline void 1526void inline_size
1159wlist_add (WL *head, WL elem) 1527wlist_add (WL *head, WL elem)
1160{ 1528{
1161 elem->next = *head; 1529 elem->next = *head;
1162 *head = elem; 1530 *head = elem;
1163} 1531}
1164 1532
1165inline void 1533void inline_size
1166wlist_del (WL *head, WL elem) 1534wlist_del (WL *head, WL elem)
1167{ 1535{
1168 while (*head) 1536 while (*head)
1169 { 1537 {
1170 if (*head == elem) 1538 if (*head == elem)
… …
1175 1543
1176 head = &(*head)->next; 1544 head = &(*head)->next;
1177 } 1545 }
1178} 1546}
1179 1547
1180inline void 1548void inline_speed
1181ev_clear_pending (EV_P_ W w) 1549clear_pending (EV_P_ W w)
1182{ 1550{
1183 if (w->pending) 1551 if (w->pending)
1184 { 1552 {
1185 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1553 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186 w->pending = 0; 1554 w->pending = 0;
1187 } 1555 }
1188} 1556}
1189 1557
1190inline void 1558int
1559ev_clear_pending (EV_P_ void *w)
1560{
1561 W w_ = (W)w;
1562 int pending = w_->pending;
1563
1564 if (expect_true (pending))
1565 {
1566 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1567 w_->pending = 0;
1568 p->w = 0;
1569 return p->events;
1570 }
1571 else
1572 return 0;
1573}
1574
1575void inline_size
1576pri_adjust (EV_P_ W w)
1577{
1578 int pri = w->priority;
1579 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1580 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1581 w->priority = pri;
1582}
1583
1584void inline_speed
1191ev_start (EV_P_ W w, int active) 1585ev_start (EV_P_ W w, int active)
1192{ 1586{
1193 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1587 pri_adjust (EV_A_ w);
1194 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195
1196 w->active = active; 1588 w->active = active;
1197 ev_ref (EV_A); 1589 ev_ref (EV_A);
1198} 1590}
1199 1591
1200inline void 1592void inline_size
1201ev_stop (EV_P_ W w) 1593ev_stop (EV_P_ W w)
1202{ 1594{
1203 ev_unref (EV_A); 1595 ev_unref (EV_A);
1204 w->active = 0; 1596 w->active = 0;
1205} 1597}
1206 1598
1207/*****************************************************************************/ 1599/*****************************************************************************/
1208 1600
1209void 1601void noinline
1210ev_io_start (EV_P_ struct ev_io *w) 1602ev_io_start (EV_P_ ev_io *w)
1211{ 1603{
1212 int fd = w->fd; 1604 int fd = w->fd;
1213 1605
1214 if (ev_is_active (w)) 1606 if (expect_false (ev_is_active (w)))
1215 return; 1607 return;
1216 1608
1217 assert (("ev_io_start called with negative fd", fd >= 0)); 1609 assert (("ev_io_start called with negative fd", fd >= 0));
1218 1610
1219 ev_start (EV_A_ (W)w, 1); 1611 ev_start (EV_A_ (W)w, 1);
1220 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1612 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1613 wlist_add (&anfds[fd].head, (WL)w);
1222 1614
1223 fd_change (EV_A_ fd); 1615 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1616 w->events &= ~EV_IOFDSET;
1224} 1617}
1225 1618
1226void 1619void noinline
1227ev_io_stop (EV_P_ struct ev_io *w) 1620ev_io_stop (EV_P_ ev_io *w)
1228{ 1621{
1229 ev_clear_pending (EV_A_ (W)w); 1622 clear_pending (EV_A_ (W)w);
1230 if (!ev_is_active (w)) 1623 if (expect_false (!ev_is_active (w)))
1231 return; 1624 return;
1232 1625
1626 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1627
1233 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1628 wlist_del (&anfds[w->fd].head, (WL)w);
1234 ev_stop (EV_A_ (W)w); 1629 ev_stop (EV_A_ (W)w);
1235 1630
1236 fd_change (EV_A_ w->fd); 1631 fd_change (EV_A_ w->fd, 1);
1237} 1632}
1238 1633
1239void 1634void noinline
1240ev_timer_start (EV_P_ struct ev_timer *w) 1635ev_timer_start (EV_P_ ev_timer *w)
1241{ 1636{
1242 if (ev_is_active (w)) 1637 if (expect_false (ev_is_active (w)))
1243 return; 1638 return;
1244 1639
1245 ((WT)w)->at += mn_now; 1640 ((WT)w)->at += mn_now;
1246 1641
1247 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1642 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248 1643
1249 ev_start (EV_A_ (W)w, ++timercnt); 1644 ev_start (EV_A_ (W)w, ++timercnt);
1250 array_needsize (timers, timermax, timercnt, (void)); 1645 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1251 timers [timercnt - 1] = w; 1646 timers [timercnt - 1] = (WT)w;
1252 upheap ((WT *)timers, timercnt - 1); 1647 upheap (timers, timercnt - 1);
1253 1648
1254 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1649 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1255} 1650}
1256 1651
1257void 1652void noinline
1258ev_timer_stop (EV_P_ struct ev_timer *w) 1653ev_timer_stop (EV_P_ ev_timer *w)
1259{ 1654{
1260 ev_clear_pending (EV_A_ (W)w); 1655 clear_pending (EV_A_ (W)w);
1261 if (!ev_is_active (w)) 1656 if (expect_false (!ev_is_active (w)))
1262 return; 1657 return;
1263 1658
1264 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1659 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1265 1660
1266 if (((W)w)->active < timercnt--) 1661 {
1662 int active = ((W)w)->active;
1663
1664 if (expect_true (--active < --timercnt))
1267 { 1665 {
1268 timers [((W)w)->active - 1] = timers [timercnt]; 1666 timers [active] = timers [timercnt];
1269 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1667 adjustheap (timers, timercnt, active);
1270 } 1668 }
1669 }
1271 1670
1272 ((WT)w)->at = w->repeat; 1671 ((WT)w)->at -= mn_now;
1273 1672
1274 ev_stop (EV_A_ (W)w); 1673 ev_stop (EV_A_ (W)w);
1275} 1674}
1276 1675
1277void 1676void noinline
1278ev_timer_again (EV_P_ struct ev_timer *w) 1677ev_timer_again (EV_P_ ev_timer *w)
1279{ 1678{
1280 if (ev_is_active (w)) 1679 if (ev_is_active (w))
1281 { 1680 {
1282 if (w->repeat) 1681 if (w->repeat)
1283 { 1682 {
1284 ((WT)w)->at = mn_now + w->repeat; 1683 ((WT)w)->at = mn_now + w->repeat;
1285 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1684 adjustheap (timers, timercnt, ((W)w)->active - 1);
1286 } 1685 }
1287 else 1686 else
1288 ev_timer_stop (EV_A_ w); 1687 ev_timer_stop (EV_A_ w);
1289 } 1688 }
1290 else if (w->repeat) 1689 else if (w->repeat)
1690 {
1691 w->at = w->repeat;
1291 ev_timer_start (EV_A_ w); 1692 ev_timer_start (EV_A_ w);
1693 }
1292} 1694}
1293 1695
1294void 1696#if EV_PERIODIC_ENABLE
1697void noinline
1295ev_periodic_start (EV_P_ struct ev_periodic *w) 1698ev_periodic_start (EV_P_ ev_periodic *w)
1296{ 1699{
1297 if (ev_is_active (w)) 1700 if (expect_false (ev_is_active (w)))
1298 return; 1701 return;
1299 1702
1703 if (w->reschedule_cb)
1704 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1705 else if (w->interval)
1706 {
1300 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1707 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1301
1302 /* this formula differs from the one in periodic_reify because we do not always round up */ 1708 /* this formula differs from the one in periodic_reify because we do not always round up */
1303 if (w->interval)
1304 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1709 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1710 }
1711 else
1712 ((WT)w)->at = w->offset;
1305 1713
1306 ev_start (EV_A_ (W)w, ++periodiccnt); 1714 ev_start (EV_A_ (W)w, ++periodiccnt);
1307 array_needsize (periodics, periodicmax, periodiccnt, (void)); 1715 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1308 periodics [periodiccnt - 1] = w; 1716 periodics [periodiccnt - 1] = (WT)w;
1309 upheap ((WT *)periodics, periodiccnt - 1); 1717 upheap (periodics, periodiccnt - 1);
1310 1718
1311 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1719 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1312} 1720}
1313 1721
1314void 1722void noinline
1315ev_periodic_stop (EV_P_ struct ev_periodic *w) 1723ev_periodic_stop (EV_P_ ev_periodic *w)
1316{ 1724{
1317 ev_clear_pending (EV_A_ (W)w); 1725 clear_pending (EV_A_ (W)w);
1318 if (!ev_is_active (w)) 1726 if (expect_false (!ev_is_active (w)))
1319 return; 1727 return;
1320 1728
1321 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1729 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1322 1730
1323 if (((W)w)->active < periodiccnt--) 1731 {
1732 int active = ((W)w)->active;
1733
1734 if (expect_true (--active < --periodiccnt))
1324 { 1735 {
1325 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1736 periodics [active] = periodics [periodiccnt];
1326 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1737 adjustheap (periodics, periodiccnt, active);
1327 } 1738 }
1739 }
1328 1740
1329 ev_stop (EV_A_ (W)w); 1741 ev_stop (EV_A_ (W)w);
1330} 1742}
1331 1743
1332void 1744void noinline
1333ev_idle_start (EV_P_ struct ev_idle *w) 1745ev_periodic_again (EV_P_ ev_periodic *w)
1334{ 1746{
1335 if (ev_is_active (w)) 1747 /* TODO: use adjustheap and recalculation */
1336 return;
1337
1338 ev_start (EV_A_ (W)w, ++idlecnt);
1339 array_needsize (idles, idlemax, idlecnt, (void));
1340 idles [idlecnt - 1] = w;
1341}
1342
1343void
1344ev_idle_stop (EV_P_ struct ev_idle *w)
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (ev_is_active (w))
1348 return;
1349
1350 idles [((W)w)->active - 1] = idles [--idlecnt];
1351 ev_stop (EV_A_ (W)w); 1748 ev_periodic_stop (EV_A_ w);
1749 ev_periodic_start (EV_A_ w);
1352} 1750}
1353 1751#endif
1354void
1355ev_prepare_start (EV_P_ struct ev_prepare *w)
1356{
1357 if (ev_is_active (w))
1358 return;
1359
1360 ev_start (EV_A_ (W)w, ++preparecnt);
1361 array_needsize (prepares, preparemax, preparecnt, (void));
1362 prepares [preparecnt - 1] = w;
1363}
1364
1365void
1366ev_prepare_stop (EV_P_ struct ev_prepare *w)
1367{
1368 ev_clear_pending (EV_A_ (W)w);
1369 if (ev_is_active (w))
1370 return;
1371
1372 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373 ev_stop (EV_A_ (W)w);
1374}
1375
1376void
1377ev_check_start (EV_P_ struct ev_check *w)
1378{
1379 if (ev_is_active (w))
1380 return;
1381
1382 ev_start (EV_A_ (W)w, ++checkcnt);
1383 array_needsize (checks, checkmax, checkcnt, (void));
1384 checks [checkcnt - 1] = w;
1385}
1386
1387void
1388ev_check_stop (EV_P_ struct ev_check *w)
1389{
1390 ev_clear_pending (EV_A_ (W)w);
1391 if (ev_is_active (w))
1392 return;
1393
1394 checks [((W)w)->active - 1] = checks [--checkcnt];
1395 ev_stop (EV_A_ (W)w);
1396}
1397 1752
1398#ifndef SA_RESTART 1753#ifndef SA_RESTART
1399# define SA_RESTART 0 1754# define SA_RESTART 0
1400#endif 1755#endif
1401 1756
1402void 1757void noinline
1403ev_signal_start (EV_P_ struct ev_signal *w) 1758ev_signal_start (EV_P_ ev_signal *w)
1404{ 1759{
1405#if EV_MULTIPLICITY 1760#if EV_MULTIPLICITY
1406 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1761 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407#endif 1762#endif
1408 if (ev_is_active (w)) 1763 if (expect_false (ev_is_active (w)))
1409 return; 1764 return;
1410 1765
1411 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1766 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412 1767
1768 {
1769#ifndef _WIN32
1770 sigset_t full, prev;
1771 sigfillset (&full);
1772 sigprocmask (SIG_SETMASK, &full, &prev);
1773#endif
1774
1775 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1776
1777#ifndef _WIN32
1778 sigprocmask (SIG_SETMASK, &prev, 0);
1779#endif
1780 }
1781
1413 ev_start (EV_A_ (W)w, 1); 1782 ev_start (EV_A_ (W)w, 1);
1414 array_needsize (signals, signalmax, w->signum, signals_init);
1415 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1783 wlist_add (&signals [w->signum - 1].head, (WL)w);
1416 1784
1417 if (!((WL)w)->next) 1785 if (!((WL)w)->next)
1418 { 1786 {
1419#if WIN32 1787#if _WIN32
1420 signal (w->signum, sighandler); 1788 signal (w->signum, sighandler);
1421#else 1789#else
1422 struct sigaction sa; 1790 struct sigaction sa;
1423 sa.sa_handler = sighandler; 1791 sa.sa_handler = sighandler;
1424 sigfillset (&sa.sa_mask); 1792 sigfillset (&sa.sa_mask);
… …
1426 sigaction (w->signum, &sa, 0); 1794 sigaction (w->signum, &sa, 0);
1427#endif 1795#endif
1428 } 1796 }
1429} 1797}
1430 1798
1431void 1799void noinline
1432ev_signal_stop (EV_P_ struct ev_signal *w) 1800ev_signal_stop (EV_P_ ev_signal *w)
1433{ 1801{
1434 ev_clear_pending (EV_A_ (W)w); 1802 clear_pending (EV_A_ (W)w);
1435 if (!ev_is_active (w)) 1803 if (expect_false (!ev_is_active (w)))
1436 return; 1804 return;
1437 1805
1438 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1806 wlist_del (&signals [w->signum - 1].head, (WL)w);
1439 ev_stop (EV_A_ (W)w); 1807 ev_stop (EV_A_ (W)w);
1440 1808
1441 if (!signals [w->signum - 1].head) 1809 if (!signals [w->signum - 1].head)
1442 signal (w->signum, SIG_DFL); 1810 signal (w->signum, SIG_DFL);
1443} 1811}
1444 1812
1445void 1813void
1446ev_child_start (EV_P_ struct ev_child *w) 1814ev_child_start (EV_P_ ev_child *w)
1447{ 1815{
1448#if EV_MULTIPLICITY 1816#if EV_MULTIPLICITY
1449 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1817 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450#endif 1818#endif
1451 if (ev_is_active (w)) 1819 if (expect_false (ev_is_active (w)))
1452 return; 1820 return;
1453 1821
1454 ev_start (EV_A_ (W)w, 1); 1822 ev_start (EV_A_ (W)w, 1);
1455 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1456} 1824}
1457 1825
1458void 1826void
1459ev_child_stop (EV_P_ struct ev_child *w) 1827ev_child_stop (EV_P_ ev_child *w)
1460{ 1828{
1461 ev_clear_pending (EV_A_ (W)w); 1829 clear_pending (EV_A_ (W)w);
1462 if (ev_is_active (w)) 1830 if (expect_false (!ev_is_active (w)))
1463 return; 1831 return;
1464 1832
1465 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1833 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1466 ev_stop (EV_A_ (W)w); 1834 ev_stop (EV_A_ (W)w);
1467} 1835}
1468 1836
1837#if EV_STAT_ENABLE
1838
1839# ifdef _WIN32
1840# undef lstat
1841# define lstat(a,b) _stati64 (a,b)
1842# endif
1843
1844#define DEF_STAT_INTERVAL 5.0074891
1845#define MIN_STAT_INTERVAL 0.1074891
1846
1847static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1848
1849#if EV_USE_INOTIFY
1850# define EV_INOTIFY_BUFSIZE 8192
1851
1852static void noinline
1853infy_add (EV_P_ ev_stat *w)
1854{
1855 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);
1856
1857 if (w->wd < 0)
1858 {
1859 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1860
1861 /* monitor some parent directory for speedup hints */
1862 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1863 {
1864 char path [4096];
1865 strcpy (path, w->path);
1866
1867 do
1868 {
1869 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1870 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1871
1872 char *pend = strrchr (path, '/');
1873
1874 if (!pend)
1875 break; /* whoops, no '/', complain to your admin */
1876
1877 *pend = 0;
1878 w->wd = inotify_add_watch (fs_fd, path, mask);
1879 }
1880 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1881 }
1882 }
1883 else
1884 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1885
1886 if (w->wd >= 0)
1887 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1888}
1889
1890static void noinline
1891infy_del (EV_P_ ev_stat *w)
1892{
1893 int slot;
1894 int wd = w->wd;
1895
1896 if (wd < 0)
1897 return;
1898
1899 w->wd = -2;
1900 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1901 wlist_del (&fs_hash [slot].head, (WL)w);
1902
1903 /* remove this watcher, if others are watching it, they will rearm */
1904 inotify_rm_watch (fs_fd, wd);
1905}
1906
1907static void noinline
1908infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1909{
1910 if (slot < 0)
1911 /* overflow, need to check for all hahs slots */
1912 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1913 infy_wd (EV_A_ slot, wd, ev);
1914 else
1915 {
1916 WL w_;
1917
1918 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1919 {
1920 ev_stat *w = (ev_stat *)w_;
1921 w_ = w_->next; /* lets us remove this watcher and all before it */
1922
1923 if (w->wd == wd || wd == -1)
1924 {
1925 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1926 {
1927 w->wd = -1;
1928 infy_add (EV_A_ w); /* re-add, no matter what */
1929 }
1930
1931 stat_timer_cb (EV_A_ &w->timer, 0);
1932 }
1933 }
1934 }
1935}
1936
1937static void
1938infy_cb (EV_P_ ev_io *w, int revents)
1939{
1940 char buf [EV_INOTIFY_BUFSIZE];
1941 struct inotify_event *ev = (struct inotify_event *)buf;
1942 int ofs;
1943 int len = read (fs_fd, buf, sizeof (buf));
1944
1945 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1946 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1947}
1948
1949void inline_size
1950infy_init (EV_P)
1951{
1952 if (fs_fd != -2)
1953 return;
1954
1955 fs_fd = inotify_init ();
1956
1957 if (fs_fd >= 0)
1958 {
1959 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1960 ev_set_priority (&fs_w, EV_MAXPRI);
1961 ev_io_start (EV_A_ &fs_w);
1962 }
1963}
1964
1965void inline_size
1966infy_fork (EV_P)
1967{
1968 int slot;
1969
1970 if (fs_fd < 0)
1971 return;
1972
1973 close (fs_fd);
1974 fs_fd = inotify_init ();
1975
1976 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1977 {
1978 WL w_ = fs_hash [slot].head;
1979 fs_hash [slot].head = 0;
1980
1981 while (w_)
1982 {
1983 ev_stat *w = (ev_stat *)w_;
1984 w_ = w_->next; /* lets us add this watcher */
1985
1986 w->wd = -1;
1987
1988 if (fs_fd >= 0)
1989 infy_add (EV_A_ w); /* re-add, no matter what */
1990 else
1991 ev_timer_start (EV_A_ &w->timer);
1992 }
1993
1994 }
1995}
1996
1997#endif
1998
1999void
2000ev_stat_stat (EV_P_ ev_stat *w)
2001{
2002 if (lstat (w->path, &w->attr) < 0)
2003 w->attr.st_nlink = 0;
2004 else if (!w->attr.st_nlink)
2005 w->attr.st_nlink = 1;
2006}
2007
2008static void noinline
2009stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2010{
2011 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2012
2013 /* we copy this here each the time so that */
2014 /* prev has the old value when the callback gets invoked */
2015 w->prev = w->attr;
2016 ev_stat_stat (EV_A_ w);
2017
2018 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2019 if (
2020 w->prev.st_dev != w->attr.st_dev
2021 || w->prev.st_ino != w->attr.st_ino
2022 || w->prev.st_mode != w->attr.st_mode
2023 || w->prev.st_nlink != w->attr.st_nlink
2024 || w->prev.st_uid != w->attr.st_uid
2025 || w->prev.st_gid != w->attr.st_gid
2026 || w->prev.st_rdev != w->attr.st_rdev
2027 || w->prev.st_size != w->attr.st_size
2028 || w->prev.st_atime != w->attr.st_atime
2029 || w->prev.st_mtime != w->attr.st_mtime
2030 || w->prev.st_ctime != w->attr.st_ctime
2031 ) {
2032 #if EV_USE_INOTIFY
2033 infy_del (EV_A_ w);
2034 infy_add (EV_A_ w);
2035 ev_stat_stat (EV_A_ w); /* avoid race... */
2036 #endif
2037
2038 ev_feed_event (EV_A_ w, EV_STAT);
2039 }
2040}
2041
2042void
2043ev_stat_start (EV_P_ ev_stat *w)
2044{
2045 if (expect_false (ev_is_active (w)))
2046 return;
2047
2048 /* since we use memcmp, we need to clear any padding data etc. */
2049 memset (&w->prev, 0, sizeof (ev_statdata));
2050 memset (&w->attr, 0, sizeof (ev_statdata));
2051
2052 ev_stat_stat (EV_A_ w);
2053
2054 if (w->interval < MIN_STAT_INTERVAL)
2055 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2056
2057 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2058 ev_set_priority (&w->timer, ev_priority (w));
2059
2060#if EV_USE_INOTIFY
2061 infy_init (EV_A);
2062
2063 if (fs_fd >= 0)
2064 infy_add (EV_A_ w);
2065 else
2066#endif
2067 ev_timer_start (EV_A_ &w->timer);
2068
2069 ev_start (EV_A_ (W)w, 1);
2070}
2071
2072void
2073ev_stat_stop (EV_P_ ev_stat *w)
2074{
2075 clear_pending (EV_A_ (W)w);
2076 if (expect_false (!ev_is_active (w)))
2077 return;
2078
2079#if EV_USE_INOTIFY
2080 infy_del (EV_A_ w);
2081#endif
2082 ev_timer_stop (EV_A_ &w->timer);
2083
2084 ev_stop (EV_A_ (W)w);
2085}
2086#endif
2087
2088#if EV_IDLE_ENABLE
2089void
2090ev_idle_start (EV_P_ ev_idle *w)
2091{
2092 if (expect_false (ev_is_active (w)))
2093 return;
2094
2095 pri_adjust (EV_A_ (W)w);
2096
2097 {
2098 int active = ++idlecnt [ABSPRI (w)];
2099
2100 ++idleall;
2101 ev_start (EV_A_ (W)w, active);
2102
2103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2104 idles [ABSPRI (w)][active - 1] = w;
2105 }
2106}
2107
2108void
2109ev_idle_stop (EV_P_ ev_idle *w)
2110{
2111 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w)))
2113 return;
2114
2115 {
2116 int active = ((W)w)->active;
2117
2118 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2119 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2120
2121 ev_stop (EV_A_ (W)w);
2122 --idleall;
2123 }
2124}
2125#endif
2126
2127void
2128ev_prepare_start (EV_P_ ev_prepare *w)
2129{
2130 if (expect_false (ev_is_active (w)))
2131 return;
2132
2133 ev_start (EV_A_ (W)w, ++preparecnt);
2134 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2135 prepares [preparecnt - 1] = w;
2136}
2137
2138void
2139ev_prepare_stop (EV_P_ ev_prepare *w)
2140{
2141 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w)))
2143 return;
2144
2145 {
2146 int active = ((W)w)->active;
2147 prepares [active - 1] = prepares [--preparecnt];
2148 ((W)prepares [active - 1])->active = active;
2149 }
2150
2151 ev_stop (EV_A_ (W)w);
2152}
2153
2154void
2155ev_check_start (EV_P_ ev_check *w)
2156{
2157 if (expect_false (ev_is_active (w)))
2158 return;
2159
2160 ev_start (EV_A_ (W)w, ++checkcnt);
2161 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2162 checks [checkcnt - 1] = w;
2163}
2164
2165void
2166ev_check_stop (EV_P_ ev_check *w)
2167{
2168 clear_pending (EV_A_ (W)w);
2169 if (expect_false (!ev_is_active (w)))
2170 return;
2171
2172 {
2173 int active = ((W)w)->active;
2174 checks [active - 1] = checks [--checkcnt];
2175 ((W)checks [active - 1])->active = active;
2176 }
2177
2178 ev_stop (EV_A_ (W)w);
2179}
2180
2181#if EV_EMBED_ENABLE
2182void noinline
2183ev_embed_sweep (EV_P_ ev_embed *w)
2184{
2185 ev_loop (w->loop, EVLOOP_NONBLOCK);
2186}
2187
2188static void
2189embed_cb (EV_P_ ev_io *io, int revents)
2190{
2191 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2192
2193 if (ev_cb (w))
2194 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2195 else
2196 ev_embed_sweep (loop, w);
2197}
2198
2199void
2200ev_embed_start (EV_P_ ev_embed *w)
2201{
2202 if (expect_false (ev_is_active (w)))
2203 return;
2204
2205 {
2206 struct ev_loop *loop = w->loop;
2207 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2208 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2209 }
2210
2211 ev_set_priority (&w->io, ev_priority (w));
2212 ev_io_start (EV_A_ &w->io);
2213
2214 ev_start (EV_A_ (W)w, 1);
2215}
2216
2217void
2218ev_embed_stop (EV_P_ ev_embed *w)
2219{
2220 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w)))
2222 return;
2223
2224 ev_io_stop (EV_A_ &w->io);
2225
2226 ev_stop (EV_A_ (W)w);
2227}
2228#endif
2229
2230#if EV_FORK_ENABLE
2231void
2232ev_fork_start (EV_P_ ev_fork *w)
2233{
2234 if (expect_false (ev_is_active (w)))
2235 return;
2236
2237 ev_start (EV_A_ (W)w, ++forkcnt);
2238 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2239 forks [forkcnt - 1] = w;
2240}
2241
2242void
2243ev_fork_stop (EV_P_ ev_fork *w)
2244{
2245 clear_pending (EV_A_ (W)w);
2246 if (expect_false (!ev_is_active (w)))
2247 return;
2248
2249 {
2250 int active = ((W)w)->active;
2251 forks [active - 1] = forks [--forkcnt];
2252 ((W)forks [active - 1])->active = active;
2253 }
2254
2255 ev_stop (EV_A_ (W)w);
2256}
2257#endif
2258
1469/*****************************************************************************/ 2259/*****************************************************************************/
1470 2260
1471struct ev_once 2261struct ev_once
1472{ 2262{
1473 struct ev_io io; 2263 ev_io io;
1474 struct ev_timer to; 2264 ev_timer to;
1475 void (*cb)(int revents, void *arg); 2265 void (*cb)(int revents, void *arg);
1476 void *arg; 2266 void *arg;
1477}; 2267};
1478 2268
1479static void 2269static void
… …
1488 2278
1489 cb (revents, arg); 2279 cb (revents, arg);
1490} 2280}
1491 2281
1492static void 2282static void
1493once_cb_io (EV_P_ struct ev_io *w, int revents) 2283once_cb_io (EV_P_ ev_io *w, int revents)
1494{ 2284{
1495 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2285 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496} 2286}
1497 2287
1498static void 2288static void
1499once_cb_to (EV_P_ struct ev_timer *w, int revents) 2289once_cb_to (EV_P_ ev_timer *w, int revents)
1500{ 2290{
1501 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2291 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502} 2292}
1503 2293
1504void 2294void
1505ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2295ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506{ 2296{
1507 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2297 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508 2298
1509 if (!once) 2299 if (expect_false (!once))
2300 {
1510 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2301 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511 else 2302 return;
1512 { 2303 }
2304
1513 once->cb = cb; 2305 once->cb = cb;
1514 once->arg = arg; 2306 once->arg = arg;
1515 2307
1516 ev_watcher_init (&once->io, once_cb_io); 2308 ev_init (&once->io, once_cb_io);
1517 if (fd >= 0) 2309 if (fd >= 0)
1518 { 2310 {
1519 ev_io_set (&once->io, fd, events); 2311 ev_io_set (&once->io, fd, events);
1520 ev_io_start (EV_A_ &once->io); 2312 ev_io_start (EV_A_ &once->io);
1521 } 2313 }
1522 2314
1523 ev_watcher_init (&once->to, once_cb_to); 2315 ev_init (&once->to, once_cb_to);
1524 if (timeout >= 0.) 2316 if (timeout >= 0.)
1525 { 2317 {
1526 ev_timer_set (&once->to, timeout, 0.); 2318 ev_timer_set (&once->to, timeout, 0.);
1527 ev_timer_start (EV_A_ &once->to); 2319 ev_timer_start (EV_A_ &once->to);
1528 }
1529 } 2320 }
1530} 2321}
1531 2322
2323#ifdef __cplusplus
2324}
2325#endif
2326

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