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Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.179 by root, Tue Dec 11 21:04:40 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>
58#include <stdlib.h> 110#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 111#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 112#include <stddef.h>
63 113
64#include <stdio.h> 114#include <stdio.h>
65 115
66#include <assert.h> 116#include <assert.h>
67#include <errno.h> 117#include <errno.h>
68#include <sys/types.h> 118#include <sys/types.h>
119#include <time.h>
120
121#include <signal.h>
122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
69#ifndef WIN32 129#ifndef _WIN32
130# include <sys/time.h>
70# 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
71#endif 138# endif
72#include <sys/time.h> 139#endif
73#include <time.h>
74 140
75/**/ 141/**/
76 142
77#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
78# 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
79#endif 149#endif
80 150
81#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
83#endif 153#endif
84 154
85#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
86# 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
87#endif 161#endif
88 162
89#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
90# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
91#endif 165#endif
92 166
93#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
95#endif 169#endif
96 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
97#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
98# ifdef WIN32 176# define EV_USE_INOTIFY 0
99# define EV_USE_WIN32 1 177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
100# else 182# else
101# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
102# endif 184# endif
103#endif 185#endif
104 186
105#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
106# 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
107#endif 193#endif
108 194
109/**/ 195/**/
110 196
111#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
116#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
119#endif 205#endif
120 206
207#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
121/**/ 219/**/
122 220
221/*
222 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding
225 * errors are against us.
226 * This value is good at least till the year 4000.
227 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
230
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127
128#include "ev.h"
129 234
130#if __GNUC__ >= 3 235#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 237# define noinline __attribute__ ((noinline))
133#else 238#else
134# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
135# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
136#endif 244#endif
137 245
138#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
140 255
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
144typedef struct ev_watcher *W; 262typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
147 265
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 267
150#if WIN32 268#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 269# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 270#endif
155 271
156/*****************************************************************************/ 272/*****************************************************************************/
157 273
158static void (*syserr_cb)(void); 274static void (*syserr_cb)(const char *msg);
159 275
160void ev_set_syserr_cb (void (*cb)(void)) 276void
277ev_set_syserr_cb (void (*cb)(const char *msg))
161{ 278{
162 syserr_cb = cb; 279 syserr_cb = cb;
163} 280}
164 281
165static void 282static void noinline
166syserr (void) 283syserr (const char *msg)
167{ 284{
285 if (!msg)
286 msg = "(libev) system error";
287
168 if (syserr_cb) 288 if (syserr_cb)
169 syserr_cb (); 289 syserr_cb (msg);
170 else 290 else
171 { 291 {
172 perror ("libev"); 292 perror (msg);
173 abort (); 293 abort ();
174 } 294 }
175} 295}
176 296
177static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
178 298
299void
179void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
180{ 301{
181 alloc = cb; 302 alloc = cb;
182} 303}
183 304
184static void * 305inline_speed void *
185ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
186{ 307{
187 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
188 309
189 if (!ptr && size) 310 if (!ptr && size)
… …
203typedef struct 324typedef struct
204{ 325{
205 WL head; 326 WL head;
206 unsigned char events; 327 unsigned char events;
207 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
208} ANFD; 332} ANFD;
209 333
210typedef struct 334typedef struct
211{ 335{
212 W w; 336 W w;
213 int events; 337 int events;
214} ANPENDING; 338} ANPENDING;
215 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
216#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
217 348
218struct ev_loop 349 struct ev_loop
219{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
220# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
221# include "ev_vars.h" 354 #include "ev_vars.h"
222};
223# undef VAR 355 #undef VAR
356 };
224# include "ev_wrap.h" 357 #include "ev_wrap.h"
358
359 static struct ev_loop default_loop_struct;
360 struct ev_loop *ev_default_loop_ptr;
225 361
226#else 362#else
227 363
364 ev_tstamp ev_rt_now;
228# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
229# include "ev_vars.h" 366 #include "ev_vars.h"
230# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
231 370
232#endif 371#endif
233 372
234/*****************************************************************************/ 373/*****************************************************************************/
235 374
236inline ev_tstamp 375ev_tstamp
237ev_time (void) 376ev_time (void)
238{ 377{
239#if EV_USE_REALTIME 378#if EV_USE_REALTIME
240 struct timespec ts; 379 struct timespec ts;
241 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
245 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
246 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
247#endif 386#endif
248} 387}
249 388
250inline ev_tstamp 389ev_tstamp inline_size
251get_clock (void) 390get_clock (void)
252{ 391{
253#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
254 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
255 { 394 {
… …
260#endif 399#endif
261 400
262 return ev_time (); 401 return ev_time ();
263} 402}
264 403
404#if EV_MULTIPLICITY
265ev_tstamp 405ev_tstamp
266ev_now (EV_P) 406ev_now (EV_P)
267{ 407{
268 return rt_now; 408 return ev_rt_now;
269} 409}
410#endif
270 411
271#define array_roundsize(base,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
272 416
417 do
418 ncur <<= 1;
419 while (cnt > ncur);
420
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096)
423 {
424 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
426 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem;
428 }
429
430 return ncur;
431}
432
433static noinline void *
434array_realloc (int elem, void *base, int *cur, int cnt)
435{
436 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur);
438}
439
273#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
274 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
275 { \ 442 { \
276 int newcnt = cur; \ 443 int ocur_ = (cur); \
277 do \ 444 (base) = (type *)array_realloc \
278 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
279 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
280 } \
281 while ((cnt) > newcnt); \
282 \
283 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
284 init (base + cur, newcnt - cur); \
285 cur = newcnt; \
286 } 447 }
287 448
449#if 0
288#define array_slim(stem) \ 450#define array_slim(type,stem) \
289 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290 { \ 452 { \
291 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
292 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
293 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294 } 456 }
457#endif
295 458
296#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
297 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
298 461
299/*****************************************************************************/ 462/*****************************************************************************/
300 463
301static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_speed
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
302anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
303{ 494{
304 while (count--) 495 while (count--)
305 { 496 {
306 base->head = 0; 497 base->head = 0;
… …
309 500
310 ++base; 501 ++base;
311 } 502 }
312} 503}
313 504
314static void 505void inline_speed
315event (EV_P_ W w, int events)
316{
317 if (w->pending)
318 {
319 pendings [ABSPRI (w)][w->pending - 1].events |= events;
320 return;
321 }
322
323 w->pending = ++pendingcnt [ABSPRI (w)];
324 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
325 pendings [ABSPRI (w)][w->pending - 1].w = w;
326 pendings [ABSPRI (w)][w->pending - 1].events = events;
327}
328
329static void
330queue_events (EV_P_ W *events, int eventcnt, int type)
331{
332 int i;
333
334 for (i = 0; i < eventcnt; ++i)
335 event (EV_A_ events [i], type);
336}
337
338static void
339fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
340{ 507{
341 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
342 struct ev_io *w; 509 ev_io *w;
343 510
344 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 511 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
345 { 512 {
346 int ev = w->events & events; 513 int ev = w->events & revents;
347 514
348 if (ev) 515 if (ev)
349 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
350 } 517 }
351} 518}
352 519
353/*****************************************************************************/ 520void
521ev_feed_fd_event (EV_P_ int fd, int revents)
522{
523 if (fd >= 0 && fd < anfdmax)
524 fd_event (EV_A_ fd, revents);
525}
354 526
355static void 527void inline_size
356fd_reify (EV_P) 528fd_reify (EV_P)
357{ 529{
358 int i; 530 int i;
359 531
360 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
361 { 533 {
362 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
363 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
364 struct ev_io *w; 536 ev_io *w;
365 537
366 int events = 0; 538 int events = 0;
367 539
368 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
369 events |= w->events; 541 events |= w->events;
370 542
543#if EV_SELECT_IS_WINSOCKET
544 if (events)
545 {
546 unsigned long argp;
547 anfd->handle = _get_osfhandle (fd);
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549 }
550#endif
551
371 anfd->reify = 0; 552 anfd->reify = 0;
372 553
373 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
374 anfd->events = events; 555 anfd->events = events;
375 } 556 }
376 557
377 fdchangecnt = 0; 558 fdchangecnt = 0;
378} 559}
379 560
380static void 561void inline_size
381fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
382{ 563{
383 if (anfds [fd].reify || fdchangecnt < 0) 564 if (expect_false (anfds [fd].reify))
384 return; 565 return;
385 566
386 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
387 568
388 ++fdchangecnt; 569 ++fdchangecnt;
389 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
391} 572}
392 573
393static void 574void inline_speed
394fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
395{ 576{
396 struct ev_io *w; 577 ev_io *w;
397 578
398 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
399 { 580 {
400 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
401 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
402 } 583 }
584}
585
586int inline_size
587fd_valid (int fd)
588{
589#ifdef _WIN32
590 return _get_osfhandle (fd) != -1;
591#else
592 return fcntl (fd, F_GETFD) != -1;
593#endif
403} 594}
404 595
405/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
406static void 597static void noinline
407fd_ebadf (EV_P) 598fd_ebadf (EV_P)
408{ 599{
409 int fd; 600 int fd;
410 601
411 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
412 if (anfds [fd].events) 603 if (anfds [fd].events)
413 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
414 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
415} 606}
416 607
417/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
418static void 609static void noinline
419fd_enomem (EV_P) 610fd_enomem (EV_P)
420{ 611{
421 int fd; 612 int fd;
422 613
423 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
426 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
427 return; 618 return;
428 } 619 }
429} 620}
430 621
431/* susually called after fork if method needs to re-arm all fds from scratch */ 622/* usually called after fork if backend needs to re-arm all fds from scratch */
432static void 623static void noinline
433fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
434{ 625{
435 int fd; 626 int fd;
436 627
437 /* this should be highly optimised to not do anything but set a flag */
438 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
439 if (anfds [fd].events) 629 if (anfds [fd].events)
440 { 630 {
441 anfds [fd].events = 0; 631 anfds [fd].events = 0;
442 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
443 } 633 }
444} 634}
445 635
446/*****************************************************************************/ 636/*****************************************************************************/
447 637
448static void 638void inline_speed
449upheap (WT *heap, int k) 639upheap (WT *heap, int k)
450{ 640{
451 WT w = heap [k]; 641 WT w = heap [k];
452 642
453 while (k && heap [k >> 1]->at > w->at) 643 while (k)
454 { 644 {
645 int p = (k - 1) >> 1;
646
647 if (heap [p]->at <= w->at)
648 break;
649
455 heap [k] = heap [k >> 1]; 650 heap [k] = heap [p];
456 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
457 k >>= 1; 652 k = p;
458 } 653 }
459 654
460 heap [k] = w; 655 heap [k] = w;
461 ((W)heap [k])->active = k + 1; 656 ((W)heap [k])->active = k + 1;
462 657
463} 658}
464 659
465static void 660void inline_speed
466downheap (WT *heap, int N, int k) 661downheap (WT *heap, int N, int k)
467{ 662{
468 WT w = heap [k]; 663 WT w = heap [k];
469 664
470 while (k < (N >> 1)) 665 for (;;)
471 { 666 {
472 int j = k << 1; 667 int c = (k << 1) + 1;
473 668
474 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 669 if (c >= N)
475 ++j;
476
477 if (w->at <= heap [j]->at)
478 break; 670 break;
479 671
672 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673 ? 1 : 0;
674
675 if (w->at <= heap [c]->at)
676 break;
677
480 heap [k] = heap [j]; 678 heap [k] = heap [c];
481 ((W)heap [k])->active = k + 1; 679 ((W)heap [k])->active = k + 1;
680
482 k = j; 681 k = c;
483 } 682 }
484 683
485 heap [k] = w; 684 heap [k] = w;
486 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
686}
687
688void inline_size
689adjustheap (WT *heap, int N, int k)
690{
691 upheap (heap, k);
692 downheap (heap, N, k);
487} 693}
488 694
489/*****************************************************************************/ 695/*****************************************************************************/
490 696
491typedef struct 697typedef struct
… …
497static ANSIG *signals; 703static ANSIG *signals;
498static int signalmax; 704static int signalmax;
499 705
500static int sigpipe [2]; 706static int sigpipe [2];
501static sig_atomic_t volatile gotsig; 707static sig_atomic_t volatile gotsig;
502static struct ev_io sigev; 708static ev_io sigev;
503 709
504static void 710void inline_size
505signals_init (ANSIG *base, int count) 711signals_init (ANSIG *base, int count)
506{ 712{
507 while (count--) 713 while (count--)
508 { 714 {
509 base->head = 0; 715 base->head = 0;
… …
514} 720}
515 721
516static void 722static void
517sighandler (int signum) 723sighandler (int signum)
518{ 724{
519#if WIN32 725#if _WIN32
520 signal (signum, sighandler); 726 signal (signum, sighandler);
521#endif 727#endif
522 728
523 signals [signum - 1].gotsig = 1; 729 signals [signum - 1].gotsig = 1;
524 730
… …
529 write (sigpipe [1], &signum, 1); 735 write (sigpipe [1], &signum, 1);
530 errno = old_errno; 736 errno = old_errno;
531 } 737 }
532} 738}
533 739
740void noinline
741ev_feed_signal_event (EV_P_ int signum)
742{
743 WL w;
744
745#if EV_MULTIPLICITY
746 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747#endif
748
749 --signum;
750
751 if (signum < 0 || signum >= signalmax)
752 return;
753
754 signals [signum].gotsig = 0;
755
756 for (w = signals [signum].head; w; w = w->next)
757 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758}
759
534static void 760static void
535sigcb (EV_P_ struct ev_io *iow, int revents) 761sigcb (EV_P_ ev_io *iow, int revents)
536{ 762{
537 WL w;
538 int signum; 763 int signum;
539 764
540 read (sigpipe [0], &revents, 1); 765 read (sigpipe [0], &revents, 1);
541 gotsig = 0; 766 gotsig = 0;
542 767
543 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
544 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
545 { 770 ev_feed_signal_event (EV_A_ signum + 1);
546 signals [signum].gotsig = 0;
547
548 for (w = signals [signum].head; w; w = w->next)
549 event (EV_A_ (W)w, EV_SIGNAL);
550 }
551} 771}
552 772
553static void 773void inline_speed
774fd_intern (int fd)
775{
776#ifdef _WIN32
777 int arg = 1;
778 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779#else
780 fcntl (fd, F_SETFD, FD_CLOEXEC);
781 fcntl (fd, F_SETFL, O_NONBLOCK);
782#endif
783}
784
785static void noinline
554siginit (EV_P) 786siginit (EV_P)
555{ 787{
556#ifndef WIN32 788 fd_intern (sigpipe [0]);
557 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 789 fd_intern (sigpipe [1]);
558 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560 /* rather than sort out wether we really need nb, set it */
561 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563#endif
564 790
565 ev_io_set (&sigev, sigpipe [0], EV_READ); 791 ev_io_set (&sigev, sigpipe [0], EV_READ);
566 ev_io_start (EV_A_ &sigev); 792 ev_io_start (EV_A_ &sigev);
567 ev_unref (EV_A); /* child watcher should not keep loop alive */ 793 ev_unref (EV_A); /* child watcher should not keep loop alive */
568} 794}
569 795
570/*****************************************************************************/ 796/*****************************************************************************/
571 797
798static ev_child *childs [EV_PID_HASHSIZE];
799
572#ifndef WIN32 800#ifndef _WIN32
573 801
574static struct ev_child *childs [PID_HASHSIZE];
575static struct ev_signal childev; 802static ev_signal childev;
803
804void inline_speed
805child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
806{
807 ev_child *w;
808
809 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
810 if (w->pid == pid || !w->pid)
811 {
812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
813 w->rpid = pid;
814 w->rstatus = status;
815 ev_feed_event (EV_A_ (W)w, EV_CHILD);
816 }
817}
576 818
577#ifndef WCONTINUED 819#ifndef WCONTINUED
578# define WCONTINUED 0 820# define WCONTINUED 0
579#endif 821#endif
580 822
581static void 823static void
582child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
583{
584 struct ev_child *w;
585
586 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
587 if (w->pid == pid || !w->pid)
588 {
589 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
590 w->rpid = pid;
591 w->rstatus = status;
592 event (EV_A_ (W)w, EV_CHILD);
593 }
594}
595
596static void
597childcb (EV_P_ struct ev_signal *sw, int revents) 824childcb (EV_P_ ev_signal *sw, int revents)
598{ 825{
599 int pid, status; 826 int pid, status;
600 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
601 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
602 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
603 /* make sure we are called again until all childs have been reaped */ 835 /* make sure we are called again until all childs have been reaped */
836 /* we need to do it this way so that the callback gets called before we continue */
604 event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605 838
606 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
607 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 841 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
608 }
609} 842}
610 843
611#endif 844#endif
612 845
613/*****************************************************************************/ 846/*****************************************************************************/
614 847
848#if EV_USE_PORT
849# include "ev_port.c"
850#endif
615#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
616# include "ev_kqueue.c" 852# include "ev_kqueue.c"
617#endif 853#endif
618#if EV_USE_EPOLL 854#if EV_USE_EPOLL
619# include "ev_epoll.c" 855# include "ev_epoll.c"
… …
636{ 872{
637 return EV_VERSION_MINOR; 873 return EV_VERSION_MINOR;
638} 874}
639 875
640/* return true if we are running with elevated privileges and should ignore env variables */ 876/* return true if we are running with elevated privileges and should ignore env variables */
641static int 877int inline_size
642enable_secure (void) 878enable_secure (void)
643{ 879{
644#ifdef WIN32 880#ifdef _WIN32
645 return 0; 881 return 0;
646#else 882#else
647 return getuid () != geteuid () 883 return getuid () != geteuid ()
648 || getgid () != getegid (); 884 || getgid () != getegid ();
649#endif 885#endif
650} 886}
651 887
652int 888unsigned int
653ev_method (EV_P) 889ev_supported_backends (void)
654{ 890{
655 return method; 891 unsigned int flags = 0;
656}
657 892
658static void 893 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
659loop_init (EV_P_ int methods) 894 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
895 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
897 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
898
899 return flags;
900}
901
902unsigned int
903ev_recommended_backends (void)
660{ 904{
661 if (!method) 905 unsigned int flags = ev_supported_backends ();
906
907#ifndef __NetBSD__
908 /* kqueue is borked on everything but netbsd apparently */
909 /* it usually doesn't work correctly on anything but sockets and pipes */
910 flags &= ~EVBACKEND_KQUEUE;
911#endif
912#ifdef __APPLE__
913 // flags &= ~EVBACKEND_KQUEUE; for documentation
914 flags &= ~EVBACKEND_POLL;
915#endif
916
917 return flags;
918}
919
920unsigned int
921ev_embeddable_backends (void)
922{
923 return EVBACKEND_EPOLL
924 | EVBACKEND_KQUEUE
925 | EVBACKEND_PORT;
926}
927
928unsigned int
929ev_backend (EV_P)
930{
931 return backend;
932}
933
934unsigned int
935ev_loop_count (EV_P)
936{
937 return loop_count;
938}
939
940static void noinline
941loop_init (EV_P_ unsigned int flags)
942{
943 if (!backend)
662 { 944 {
663#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
664 { 946 {
665 struct timespec ts; 947 struct timespec ts;
666 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 948 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667 have_monotonic = 1; 949 have_monotonic = 1;
668 } 950 }
669#endif 951#endif
670 952
671 rt_now = ev_time (); 953 ev_rt_now = ev_time ();
672 mn_now = get_clock (); 954 mn_now = get_clock ();
673 now_floor = mn_now; 955 now_floor = mn_now;
674 rtmn_diff = rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
675 957
676 if (methods == EVMETHOD_AUTO) 958 /* pid check not overridable via env */
677 if (!enable_secure () && getenv ("LIBEV_METHODS")) 959#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid ();
962#endif
963
964 if (!(flags & EVFLAG_NOENV)
965 && !enable_secure ()
966 && getenv ("LIBEV_FLAGS"))
678 methods = atoi (getenv ("LIBEV_METHODS")); 967 flags = atoi (getenv ("LIBEV_FLAGS"));
679 else
680 methods = EVMETHOD_ANY;
681 968
682 method = 0; 969 if (!(flags & 0x0000ffffUL))
970 flags |= ev_recommended_backends ();
971
972 backend = 0;
973 backend_fd = -1;
683#if EV_USE_WIN32 974#if EV_USE_INOTIFY
684 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 975 fs_fd = -2;
976#endif
977
978#if EV_USE_PORT
979 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
685#endif 980#endif
686#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
687 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
688#endif 983#endif
689#if EV_USE_EPOLL 984#if EV_USE_EPOLL
690 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 985 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
691#endif 986#endif
692#if EV_USE_POLL 987#if EV_USE_POLL
693 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
694#endif 989#endif
695#if EV_USE_SELECT 990#if EV_USE_SELECT
696 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
697#endif 992#endif
698 }
699}
700 993
701void 994 ev_init (&sigev, sigcb);
995 ev_set_priority (&sigev, EV_MAXPRI);
996 }
997}
998
999static void noinline
702loop_destroy (EV_P) 1000loop_destroy (EV_P)
703{ 1001{
704 int i; 1002 int i;
705 1003
706#if EV_USE_WIN32 1004#if EV_USE_INOTIFY
707 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1005 if (fs_fd >= 0)
1006 close (fs_fd);
1007#endif
1008
1009 if (backend_fd >= 0)
1010 close (backend_fd);
1011
1012#if EV_USE_PORT
1013 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
708#endif 1014#endif
709#if EV_USE_KQUEUE 1015#if EV_USE_KQUEUE
710 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1016 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
711#endif 1017#endif
712#if EV_USE_EPOLL 1018#if EV_USE_EPOLL
713 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1019 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
714#endif 1020#endif
715#if EV_USE_POLL 1021#if EV_USE_POLL
716 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1022 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
717#endif 1023#endif
718#if EV_USE_SELECT 1024#if EV_USE_SELECT
719 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
720#endif 1026#endif
721 1027
722 for (i = NUMPRI; i--; ) 1028 for (i = NUMPRI; i--; )
1029 {
723 array_free (pending, [i]); 1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
724 1035
1036 /* have to use the microsoft-never-gets-it-right macro */
725 array_free (fdchange, ); 1037 array_free (fdchange, EMPTY);
726 array_free (timer, ); 1038 array_free (timer, EMPTY);
1039#if EV_PERIODIC_ENABLE
727 array_free (periodic, ); 1040 array_free (periodic, EMPTY);
728 array_free (idle, ); 1041#endif
729 array_free (prepare, ); 1042 array_free (prepare, EMPTY);
730 array_free (check, ); 1043 array_free (check, EMPTY);
731 1044
732 method = 0; 1045 backend = 0;
733 /*TODO*/
734} 1046}
735 1047
736void 1048void inline_size infy_fork (EV_P);
1049
1050void inline_size
737loop_fork (EV_P) 1051loop_fork (EV_P)
738{ 1052{
739 /*TODO*/ 1053#if EV_USE_PORT
1054 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055#endif
1056#if EV_USE_KQUEUE
1057 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1058#endif
740#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
741 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742#endif 1061#endif
743#if EV_USE_KQUEUE 1062#if EV_USE_INOTIFY
744 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1063 infy_fork (EV_A);
745#endif 1064#endif
1065
1066 if (ev_is_active (&sigev))
1067 {
1068 /* default loop */
1069
1070 ev_ref (EV_A);
1071 ev_io_stop (EV_A_ &sigev);
1072 close (sigpipe [0]);
1073 close (sigpipe [1]);
1074
1075 while (pipe (sigpipe))
1076 syserr ("(libev) error creating pipe");
1077
1078 siginit (EV_A);
1079 }
1080
1081 postfork = 0;
746} 1082}
747 1083
748#if EV_MULTIPLICITY 1084#if EV_MULTIPLICITY
749struct ev_loop * 1085struct ev_loop *
750ev_loop_new (int methods) 1086ev_loop_new (unsigned int flags)
751{ 1087{
752 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1088 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
753 1089
754 memset (loop, 0, sizeof (struct ev_loop)); 1090 memset (loop, 0, sizeof (struct ev_loop));
755 1091
756 loop_init (EV_A_ methods); 1092 loop_init (EV_A_ flags);
757 1093
758 if (ev_method (EV_A)) 1094 if (ev_backend (EV_A))
759 return loop; 1095 return loop;
760 1096
761 return 0; 1097 return 0;
762} 1098}
763 1099
… …
769} 1105}
770 1106
771void 1107void
772ev_loop_fork (EV_P) 1108ev_loop_fork (EV_P)
773{ 1109{
774 loop_fork (EV_A); 1110 postfork = 1;
775} 1111}
776 1112
777#endif 1113#endif
778 1114
779#if EV_MULTIPLICITY 1115#if EV_MULTIPLICITY
780struct ev_loop default_loop_struct;
781static struct ev_loop *default_loop;
782
783struct ev_loop * 1116struct ev_loop *
1117ev_default_loop_init (unsigned int flags)
784#else 1118#else
785static int default_loop;
786
787int 1119int
1120ev_default_loop (unsigned int flags)
788#endif 1121#endif
789ev_default_loop (int methods)
790{ 1122{
791 if (sigpipe [0] == sigpipe [1]) 1123 if (sigpipe [0] == sigpipe [1])
792 if (pipe (sigpipe)) 1124 if (pipe (sigpipe))
793 return 0; 1125 return 0;
794 1126
795 if (!default_loop) 1127 if (!ev_default_loop_ptr)
796 { 1128 {
797#if EV_MULTIPLICITY 1129#if EV_MULTIPLICITY
798 struct ev_loop *loop = default_loop = &default_loop_struct; 1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799#else 1131#else
800 default_loop = 1; 1132 ev_default_loop_ptr = 1;
801#endif 1133#endif
802 1134
803 loop_init (EV_A_ methods); 1135 loop_init (EV_A_ flags);
804 1136
805 if (ev_method (EV_A)) 1137 if (ev_backend (EV_A))
806 { 1138 {
807 ev_watcher_init (&sigev, sigcb);
808 ev_set_priority (&sigev, EV_MAXPRI);
809 siginit (EV_A); 1139 siginit (EV_A);
810 1140
811#ifndef WIN32 1141#ifndef _WIN32
812 ev_signal_init (&childev, childcb, SIGCHLD); 1142 ev_signal_init (&childev, childcb, SIGCHLD);
813 ev_set_priority (&childev, EV_MAXPRI); 1143 ev_set_priority (&childev, EV_MAXPRI);
814 ev_signal_start (EV_A_ &childev); 1144 ev_signal_start (EV_A_ &childev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1145 ev_unref (EV_A); /* child watcher should not keep loop alive */
816#endif 1146#endif
817 } 1147 }
818 else 1148 else
819 default_loop = 0; 1149 ev_default_loop_ptr = 0;
820 } 1150 }
821 1151
822 return default_loop; 1152 return ev_default_loop_ptr;
823} 1153}
824 1154
825void 1155void
826ev_default_destroy (void) 1156ev_default_destroy (void)
827{ 1157{
828#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
829 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
830#endif 1160#endif
831 1161
1162#ifndef _WIN32
832 ev_ref (EV_A); /* child watcher */ 1163 ev_ref (EV_A); /* child watcher */
833 ev_signal_stop (EV_A_ &childev); 1164 ev_signal_stop (EV_A_ &childev);
1165#endif
834 1166
835 ev_ref (EV_A); /* signal watcher */ 1167 ev_ref (EV_A); /* signal watcher */
836 ev_io_stop (EV_A_ &sigev); 1168 ev_io_stop (EV_A_ &sigev);
837 1169
838 close (sigpipe [0]); sigpipe [0] = 0; 1170 close (sigpipe [0]); sigpipe [0] = 0;
… …
843 1175
844void 1176void
845ev_default_fork (void) 1177ev_default_fork (void)
846{ 1178{
847#if EV_MULTIPLICITY 1179#if EV_MULTIPLICITY
848 struct ev_loop *loop = default_loop; 1180 struct ev_loop *loop = ev_default_loop_ptr;
849#endif 1181#endif
850 1182
851 loop_fork (EV_A); 1183 if (backend)
852 1184 postfork = 1;
853 ev_io_stop (EV_A_ &sigev);
854 close (sigpipe [0]);
855 close (sigpipe [1]);
856 pipe (sigpipe);
857
858 ev_ref (EV_A); /* signal watcher */
859 siginit (EV_A);
860} 1185}
861 1186
862/*****************************************************************************/ 1187/*****************************************************************************/
863 1188
864static void 1189void
1190ev_invoke (EV_P_ void *w, int revents)
1191{
1192 EV_CB_INVOKE ((W)w, revents);
1193}
1194
1195void inline_speed
865call_pending (EV_P) 1196call_pending (EV_P)
866{ 1197{
867 int pri; 1198 int pri;
868 1199
869 for (pri = NUMPRI; pri--; ) 1200 for (pri = NUMPRI; pri--; )
870 while (pendingcnt [pri]) 1201 while (pendingcnt [pri])
871 { 1202 {
872 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873 1204
874 if (p->w) 1205 if (expect_true (p->w))
875 { 1206 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
876 p->w->pending = 0; 1209 p->w->pending = 0;
877 p->w->cb (EV_A_ p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
878 } 1211 }
879 } 1212 }
880} 1213}
881 1214
882static void 1215void inline_size
883timers_reify (EV_P) 1216timers_reify (EV_P)
884{ 1217{
885 while (timercnt && ((WT)timers [0])->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
886 { 1219 {
887 struct ev_timer *w = timers [0]; 1220 ev_timer *w = timers [0];
888 1221
889 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
890 1223
891 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
892 if (w->repeat) 1225 if (w->repeat)
893 { 1226 {
894 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1227 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
895 ((WT)w)->at = mn_now + w->repeat; 1229 ((WT)w)->at += w->repeat;
1230 if (((WT)w)->at < mn_now)
1231 ((WT)w)->at = mn_now;
1232
896 downheap ((WT *)timers, timercnt, 0); 1233 downheap ((WT *)timers, timercnt, 0);
897 } 1234 }
898 else 1235 else
899 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900 1237
901 event (EV_A_ (W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902 } 1239 }
903} 1240}
904 1241
905static void 1242#if EV_PERIODIC_ENABLE
1243void inline_size
906periodics_reify (EV_P) 1244periodics_reify (EV_P)
907{ 1245{
908 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909 { 1247 {
910 struct ev_periodic *w = periodics [0]; 1248 ev_periodic *w = periodics [0];
911 1249
912 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
913 1251
914 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
915 if (w->interval) 1253 if (w->reschedule_cb)
916 { 1254 {
1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257 downheap ((WT *)periodics, periodiccnt, 0);
1258 }
1259 else if (w->interval)
1260 {
917 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1261 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
918 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1263 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
919 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap ((WT *)periodics, periodiccnt, 0);
920 } 1265 }
921 else 1266 else
922 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923 1268
924 event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925 } 1270 }
926} 1271}
927 1272
928static void 1273static void noinline
929periodics_reschedule (EV_P) 1274periodics_reschedule (EV_P)
930{ 1275{
931 int i; 1276 int i;
932 1277
933 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
934 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
935 { 1280 {
936 struct ev_periodic *w = periodics [i]; 1281 ev_periodic *w = periodics [i];
937 1282
1283 if (w->reschedule_cb)
1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938 if (w->interval) 1285 else if (w->interval)
1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287 }
1288
1289 /* now rebuild the heap */
1290 for (i = periodiccnt >> 1; i--; )
1291 downheap ((WT *)periodics, periodiccnt, i);
1292}
1293#endif
1294
1295#if EV_IDLE_ENABLE
1296void inline_size
1297idle_reify (EV_P)
1298{
1299 if (expect_false (idleall))
1300 {
1301 int pri;
1302
1303 for (pri = NUMPRI; pri--; )
939 { 1304 {
940 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1305 if (pendingcnt [pri])
1306 break;
941 1307
942 if (fabs (diff) >= 1e-4) 1308 if (idlecnt [pri])
943 { 1309 {
944 ev_periodic_stop (EV_A_ w); 1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
945 ev_periodic_start (EV_A_ w); 1311 break;
946
947 i = 0; /* restart loop, inefficient, but time jumps should be rare */
948 } 1312 }
949 } 1313 }
950 } 1314 }
951} 1315}
1316#endif
952 1317
953inline int 1318void inline_speed
954time_update_monotonic (EV_P) 1319time_update (EV_P_ ev_tstamp max_block)
955{
956 mn_now = get_clock ();
957
958 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959 {
960 rt_now = rtmn_diff + mn_now;
961 return 0;
962 }
963 else
964 {
965 now_floor = mn_now;
966 rt_now = ev_time ();
967 return 1;
968 }
969}
970
971static void
972time_update (EV_P)
973{ 1320{
974 int i; 1321 int i;
975 1322
976#if EV_USE_MONOTONIC 1323#if EV_USE_MONOTONIC
977 if (expect_true (have_monotonic)) 1324 if (expect_true (have_monotonic))
978 { 1325 {
979 if (time_update_monotonic (EV_A)) 1326 ev_tstamp odiff = rtmn_diff;
1327
1328 mn_now = get_clock ();
1329
1330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1331 /* interpolate in the meantime */
1332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
980 { 1333 {
981 ev_tstamp odiff = rtmn_diff; 1334 ev_rt_now = rtmn_diff + mn_now;
1335 return;
1336 }
982 1337
1338 now_floor = mn_now;
1339 ev_rt_now = ev_time ();
1340
983 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1341 /* loop a few times, before making important decisions.
1342 * on the choice of "4": one iteration isn't enough,
1343 * in case we get preempted during the calls to
1344 * ev_time and get_clock. a second call is almost guaranteed
1345 * to succeed in that case, though. and looping a few more times
1346 * doesn't hurt either as we only do this on time-jumps or
1347 * in the unlikely event of having been preempted here.
1348 */
1349 for (i = 4; --i; )
984 { 1350 {
985 rtmn_diff = rt_now - mn_now; 1351 rtmn_diff = ev_rt_now - mn_now;
986 1352
987 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988 return; /* all is well */ 1354 return; /* all is well */
989 1355
990 rt_now = ev_time (); 1356 ev_rt_now = ev_time ();
991 mn_now = get_clock (); 1357 mn_now = get_clock ();
992 now_floor = mn_now; 1358 now_floor = mn_now;
993 } 1359 }
994 1360
1361# if EV_PERIODIC_ENABLE
1362 periodics_reschedule (EV_A);
1363# endif
1364 /* no timer adjustment, as the monotonic clock doesn't jump */
1365 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1366 }
1367 else
1368#endif
1369 {
1370 ev_rt_now = ev_time ();
1371
1372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373 {
1374#if EV_PERIODIC_ENABLE
995 periodics_reschedule (EV_A); 1375 periodics_reschedule (EV_A);
996 /* no timer adjustment, as the monotonic clock doesn't jump */ 1376#endif
997 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
1378 for (i = 0; i < timercnt; ++i)
1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
998 } 1380 }
999 }
1000 else
1001#endif
1002 {
1003 rt_now = ev_time ();
1004 1381
1005 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006 {
1007 periodics_reschedule (EV_A);
1008
1009 /* adjust timers. this is easy, as the offset is the same for all */
1010 for (i = 0; i < timercnt; ++i)
1011 ((WT)timers [i])->at += rt_now - mn_now;
1012 }
1013
1014 mn_now = rt_now; 1382 mn_now = ev_rt_now;
1015 } 1383 }
1016} 1384}
1017 1385
1018void 1386void
1019ev_ref (EV_P) 1387ev_ref (EV_P)
… …
1030static int loop_done; 1398static int loop_done;
1031 1399
1032void 1400void
1033ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
1034{ 1402{
1035 double block;
1036 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1404 ? EVUNLOOP_ONE
1405 : EVUNLOOP_CANCEL;
1406
1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1037 1408
1038 do 1409 do
1039 { 1410 {
1411#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid))
1414 {
1415 curpid = getpid ();
1416 postfork = 1;
1417 }
1418#endif
1419
1420#if EV_FORK_ENABLE
1421 /* we might have forked, so queue fork handlers */
1422 if (expect_false (postfork))
1423 if (forkcnt)
1424 {
1425 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426 call_pending (EV_A);
1427 }
1428#endif
1429
1040 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
1041 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
1042 { 1432 {
1043 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044 call_pending (EV_A); 1434 call_pending (EV_A);
1045 } 1435 }
1046 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1440 /* we might have forked, so reify kernel state if necessary */
1441 if (expect_false (postfork))
1442 loop_fork (EV_A);
1443
1047 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
1048 fd_reify (EV_A); 1445 fd_reify (EV_A);
1049 1446
1050 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
1051 1450
1052 /* we only need this for !monotonic clockor timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1053 always have timers, we just calculate it always */ 1452 block = 0.; /* do not block at all */
1054#if EV_USE_MONOTONIC
1055 if (expect_true (have_monotonic))
1056 time_update_monotonic (EV_A);
1057 else 1453 else
1058#endif
1059 { 1454 {
1060 rt_now = ev_time (); 1455 /* update time to cancel out callback processing overhead */
1061 mn_now = rt_now; 1456 time_update (EV_A_ 1e100);
1062 }
1063 1457
1064 if (flags & EVLOOP_NONBLOCK || idlecnt)
1065 block = 0.;
1066 else
1067 {
1068 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
1069 1459
1070 if (timercnt) 1460 if (timercnt)
1071 { 1461 {
1072 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1073 if (block > to) block = to; 1463 if (block > to) block = to;
1074 } 1464 }
1075 1465
1466#if EV_PERIODIC_ENABLE
1076 if (periodiccnt) 1467 if (periodiccnt)
1077 { 1468 {
1078 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1079 if (block > to) block = to; 1470 if (block > to) block = to;
1080 } 1471 }
1472#endif
1081 1473
1082 if (block < 0.) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
1083 } 1475 }
1084 1476
1477 ++loop_count;
1085 method_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
1086 1479
1087 /* update rt_now, do magic */ 1480 /* update ev_rt_now, do magic */
1088 time_update (EV_A); 1481 time_update (EV_A_ block);
1482 }
1089 1483
1090 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
1091 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1486#if EV_PERIODIC_ENABLE
1092 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1488#endif
1093 1489
1490#if EV_IDLE_ENABLE
1094 /* queue idle watchers unless io or timers are pending */ 1491 /* queue idle watchers unless other events are pending */
1095 if (!pendingcnt) 1492 idle_reify (EV_A);
1096 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
1097 1494
1098 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
1099 if (checkcnt) 1496 if (expect_false (checkcnt))
1100 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101 1498
1102 call_pending (EV_A); 1499 call_pending (EV_A);
1500
1103 } 1501 }
1104 while (activecnt && !loop_done); 1502 while (expect_true (activecnt && !loop_done));
1105 1503
1106 if (loop_done != 2) 1504 if (loop_done == EVUNLOOP_ONE)
1107 loop_done = 0; 1505 loop_done = EVUNLOOP_CANCEL;
1108} 1506}
1109 1507
1110void 1508void
1111ev_unloop (EV_P_ int how) 1509ev_unloop (EV_P_ int how)
1112{ 1510{
1113 loop_done = how; 1511 loop_done = how;
1114} 1512}
1115 1513
1116/*****************************************************************************/ 1514/*****************************************************************************/
1117 1515
1118inline void 1516void inline_size
1119wlist_add (WL *head, WL elem) 1517wlist_add (WL *head, WL elem)
1120{ 1518{
1121 elem->next = *head; 1519 elem->next = *head;
1122 *head = elem; 1520 *head = elem;
1123} 1521}
1124 1522
1125inline void 1523void inline_size
1126wlist_del (WL *head, WL elem) 1524wlist_del (WL *head, WL elem)
1127{ 1525{
1128 while (*head) 1526 while (*head)
1129 { 1527 {
1130 if (*head == elem) 1528 if (*head == elem)
… …
1135 1533
1136 head = &(*head)->next; 1534 head = &(*head)->next;
1137 } 1535 }
1138} 1536}
1139 1537
1140inline void 1538void inline_speed
1141ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
1142{ 1540{
1143 if (w->pending) 1541 if (w->pending)
1144 { 1542 {
1145 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146 w->pending = 0; 1544 w->pending = 0;
1147 } 1545 }
1148} 1546}
1149 1547
1150inline void 1548int
1549ev_clear_pending (EV_P_ void *w)
1550{
1551 W w_ = (W)w;
1552 int pending = w_->pending;
1553
1554 if (expect_true (pending))
1555 {
1556 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1557 w_->pending = 0;
1558 p->w = 0;
1559 return p->events;
1560 }
1561 else
1562 return 0;
1563}
1564
1565void inline_size
1566pri_adjust (EV_P_ W w)
1567{
1568 int pri = w->priority;
1569 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571 w->priority = pri;
1572}
1573
1574void inline_speed
1151ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
1152{ 1576{
1153 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
1154 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155
1156 w->active = active; 1578 w->active = active;
1157 ev_ref (EV_A); 1579 ev_ref (EV_A);
1158} 1580}
1159 1581
1160inline void 1582void inline_size
1161ev_stop (EV_P_ W w) 1583ev_stop (EV_P_ W w)
1162{ 1584{
1163 ev_unref (EV_A); 1585 ev_unref (EV_A);
1164 w->active = 0; 1586 w->active = 0;
1165} 1587}
1166 1588
1167/*****************************************************************************/ 1589/*****************************************************************************/
1168 1590
1169void 1591void noinline
1170ev_io_start (EV_P_ struct ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
1171{ 1593{
1172 int fd = w->fd; 1594 int fd = w->fd;
1173 1595
1174 if (ev_is_active (w)) 1596 if (expect_false (ev_is_active (w)))
1175 return; 1597 return;
1176 1598
1177 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
1178 1600
1179 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
1180 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182 1604
1183 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd);
1184} 1606}
1185 1607
1186void 1608void noinline
1187ev_io_stop (EV_P_ struct ev_io *w) 1609ev_io_stop (EV_P_ ev_io *w)
1188{ 1610{
1189 ev_clear_pending (EV_A_ (W)w); 1611 clear_pending (EV_A_ (W)w);
1190 if (!ev_is_active (w)) 1612 if (expect_false (!ev_is_active (w)))
1191 return; 1613 return;
1614
1615 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192 1616
1193 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1617 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194 ev_stop (EV_A_ (W)w); 1618 ev_stop (EV_A_ (W)w);
1195 1619
1196 fd_change (EV_A_ w->fd); 1620 fd_change (EV_A_ w->fd);
1197} 1621}
1198 1622
1199void 1623void noinline
1200ev_timer_start (EV_P_ struct ev_timer *w) 1624ev_timer_start (EV_P_ ev_timer *w)
1201{ 1625{
1202 if (ev_is_active (w)) 1626 if (expect_false (ev_is_active (w)))
1203 return; 1627 return;
1204 1628
1205 ((WT)w)->at += mn_now; 1629 ((WT)w)->at += mn_now;
1206 1630
1207 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1631 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208 1632
1209 ev_start (EV_A_ (W)w, ++timercnt); 1633 ev_start (EV_A_ (W)w, ++timercnt);
1210 array_needsize (timers, timermax, timercnt, ); 1634 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1211 timers [timercnt - 1] = w; 1635 timers [timercnt - 1] = w;
1212 upheap ((WT *)timers, timercnt - 1); 1636 upheap ((WT *)timers, timercnt - 1);
1213 1637
1638 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1639}
1640
1641void noinline
1642ev_timer_stop (EV_P_ ev_timer *w)
1643{
1644 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w)))
1646 return;
1647
1214 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1648 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215}
1216 1649
1217void 1650 {
1218ev_timer_stop (EV_P_ struct ev_timer *w) 1651 int active = ((W)w)->active;
1219{
1220 ev_clear_pending (EV_A_ (W)w);
1221 if (!ev_is_active (w))
1222 return;
1223 1652
1224 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1653 if (expect_true (--active < --timercnt))
1225
1226 if (((W)w)->active < timercnt--)
1227 { 1654 {
1228 timers [((W)w)->active - 1] = timers [timercnt]; 1655 timers [active] = timers [timercnt];
1229 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1656 adjustheap ((WT *)timers, timercnt, active);
1230 } 1657 }
1658 }
1231 1659
1232 ((WT)w)->at = w->repeat; 1660 ((WT)w)->at -= mn_now;
1233 1661
1234 ev_stop (EV_A_ (W)w); 1662 ev_stop (EV_A_ (W)w);
1235} 1663}
1236 1664
1237void 1665void noinline
1238ev_timer_again (EV_P_ struct ev_timer *w) 1666ev_timer_again (EV_P_ ev_timer *w)
1239{ 1667{
1240 if (ev_is_active (w)) 1668 if (ev_is_active (w))
1241 { 1669 {
1242 if (w->repeat) 1670 if (w->repeat)
1243 { 1671 {
1244 ((WT)w)->at = mn_now + w->repeat; 1672 ((WT)w)->at = mn_now + w->repeat;
1245 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1673 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246 } 1674 }
1247 else 1675 else
1248 ev_timer_stop (EV_A_ w); 1676 ev_timer_stop (EV_A_ w);
1249 } 1677 }
1250 else if (w->repeat) 1678 else if (w->repeat)
1679 {
1680 w->at = w->repeat;
1251 ev_timer_start (EV_A_ w); 1681 ev_timer_start (EV_A_ w);
1682 }
1252} 1683}
1253 1684
1254void 1685#if EV_PERIODIC_ENABLE
1686void noinline
1255ev_periodic_start (EV_P_ struct ev_periodic *w) 1687ev_periodic_start (EV_P_ ev_periodic *w)
1256{ 1688{
1257 if (ev_is_active (w)) 1689 if (expect_false (ev_is_active (w)))
1258 return; 1690 return;
1259 1691
1692 if (w->reschedule_cb)
1693 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1694 else if (w->interval)
1695 {
1260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1696 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262 /* this formula differs from the one in periodic_reify because we do not always round up */ 1697 /* this formula differs from the one in periodic_reify because we do not always round up */
1263 if (w->interval)
1264 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1698 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699 }
1700 else
1701 ((WT)w)->at = w->offset;
1265 1702
1266 ev_start (EV_A_ (W)w, ++periodiccnt); 1703 ev_start (EV_A_ (W)w, ++periodiccnt);
1267 array_needsize (periodics, periodicmax, periodiccnt, ); 1704 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268 periodics [periodiccnt - 1] = w; 1705 periodics [periodiccnt - 1] = w;
1269 upheap ((WT *)periodics, periodiccnt - 1); 1706 upheap ((WT *)periodics, periodiccnt - 1);
1270 1707
1708 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1709}
1710
1711void noinline
1712ev_periodic_stop (EV_P_ ev_periodic *w)
1713{
1714 clear_pending (EV_A_ (W)w);
1715 if (expect_false (!ev_is_active (w)))
1716 return;
1717
1271 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1718 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272}
1273 1719
1274void 1720 {
1275ev_periodic_stop (EV_P_ struct ev_periodic *w) 1721 int active = ((W)w)->active;
1276{
1277 ev_clear_pending (EV_A_ (W)w);
1278 if (!ev_is_active (w))
1279 return;
1280 1722
1281 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1723 if (expect_true (--active < --periodiccnt))
1282
1283 if (((W)w)->active < periodiccnt--)
1284 { 1724 {
1285 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1725 periodics [active] = periodics [periodiccnt];
1286 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1726 adjustheap ((WT *)periodics, periodiccnt, active);
1287 } 1727 }
1728 }
1288 1729
1289 ev_stop (EV_A_ (W)w); 1730 ev_stop (EV_A_ (W)w);
1290} 1731}
1291 1732
1292void 1733void noinline
1293ev_idle_start (EV_P_ struct ev_idle *w) 1734ev_periodic_again (EV_P_ ev_periodic *w)
1294{ 1735{
1295 if (ev_is_active (w)) 1736 /* TODO: use adjustheap and recalculation */
1296 return;
1297
1298 ev_start (EV_A_ (W)w, ++idlecnt);
1299 array_needsize (idles, idlemax, idlecnt, );
1300 idles [idlecnt - 1] = w;
1301}
1302
1303void
1304ev_idle_stop (EV_P_ struct ev_idle *w)
1305{
1306 ev_clear_pending (EV_A_ (W)w);
1307 if (ev_is_active (w))
1308 return;
1309
1310 idles [((W)w)->active - 1] = idles [--idlecnt];
1311 ev_stop (EV_A_ (W)w); 1737 ev_periodic_stop (EV_A_ w);
1738 ev_periodic_start (EV_A_ w);
1312} 1739}
1313 1740#endif
1314void
1315ev_prepare_start (EV_P_ struct ev_prepare *w)
1316{
1317 if (ev_is_active (w))
1318 return;
1319
1320 ev_start (EV_A_ (W)w, ++preparecnt);
1321 array_needsize (prepares, preparemax, preparecnt, );
1322 prepares [preparecnt - 1] = w;
1323}
1324
1325void
1326ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327{
1328 ev_clear_pending (EV_A_ (W)w);
1329 if (ev_is_active (w))
1330 return;
1331
1332 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333 ev_stop (EV_A_ (W)w);
1334}
1335
1336void
1337ev_check_start (EV_P_ struct ev_check *w)
1338{
1339 if (ev_is_active (w))
1340 return;
1341
1342 ev_start (EV_A_ (W)w, ++checkcnt);
1343 array_needsize (checks, checkmax, checkcnt, );
1344 checks [checkcnt - 1] = w;
1345}
1346
1347void
1348ev_check_stop (EV_P_ struct ev_check *w)
1349{
1350 ev_clear_pending (EV_A_ (W)w);
1351 if (ev_is_active (w))
1352 return;
1353
1354 checks [((W)w)->active - 1] = checks [--checkcnt];
1355 ev_stop (EV_A_ (W)w);
1356}
1357 1741
1358#ifndef SA_RESTART 1742#ifndef SA_RESTART
1359# define SA_RESTART 0 1743# define SA_RESTART 0
1360#endif 1744#endif
1361 1745
1362void 1746void noinline
1363ev_signal_start (EV_P_ struct ev_signal *w) 1747ev_signal_start (EV_P_ ev_signal *w)
1364{ 1748{
1365#if EV_MULTIPLICITY 1749#if EV_MULTIPLICITY
1366 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1750 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367#endif 1751#endif
1368 if (ev_is_active (w)) 1752 if (expect_false (ev_is_active (w)))
1369 return; 1753 return;
1370 1754
1371 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1755 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372 1756
1373 ev_start (EV_A_ (W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
1374 array_needsize (signals, signalmax, w->signum, signals_init); 1758 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1759 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376 1760
1377 if (!((WL)w)->next) 1761 if (!((WL)w)->next)
1378 { 1762 {
1379#if WIN32 1763#if _WIN32
1380 signal (w->signum, sighandler); 1764 signal (w->signum, sighandler);
1381#else 1765#else
1382 struct sigaction sa; 1766 struct sigaction sa;
1383 sa.sa_handler = sighandler; 1767 sa.sa_handler = sighandler;
1384 sigfillset (&sa.sa_mask); 1768 sigfillset (&sa.sa_mask);
… …
1386 sigaction (w->signum, &sa, 0); 1770 sigaction (w->signum, &sa, 0);
1387#endif 1771#endif
1388 } 1772 }
1389} 1773}
1390 1774
1391void 1775void noinline
1392ev_signal_stop (EV_P_ struct ev_signal *w) 1776ev_signal_stop (EV_P_ ev_signal *w)
1393{ 1777{
1394 ev_clear_pending (EV_A_ (W)w); 1778 clear_pending (EV_A_ (W)w);
1395 if (!ev_is_active (w)) 1779 if (expect_false (!ev_is_active (w)))
1396 return; 1780 return;
1397 1781
1398 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1782 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399 ev_stop (EV_A_ (W)w); 1783 ev_stop (EV_A_ (W)w);
1400 1784
1401 if (!signals [w->signum - 1].head) 1785 if (!signals [w->signum - 1].head)
1402 signal (w->signum, SIG_DFL); 1786 signal (w->signum, SIG_DFL);
1403} 1787}
1404 1788
1405void 1789void
1406ev_child_start (EV_P_ struct ev_child *w) 1790ev_child_start (EV_P_ ev_child *w)
1407{ 1791{
1408#if EV_MULTIPLICITY 1792#if EV_MULTIPLICITY
1409 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1793 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410#endif 1794#endif
1411 if (ev_is_active (w)) 1795 if (expect_false (ev_is_active (w)))
1412 return; 1796 return;
1413 1797
1414 ev_start (EV_A_ (W)w, 1); 1798 ev_start (EV_A_ (W)w, 1);
1415 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1799 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1416} 1800}
1417 1801
1418void 1802void
1419ev_child_stop (EV_P_ struct ev_child *w) 1803ev_child_stop (EV_P_ ev_child *w)
1420{ 1804{
1421 ev_clear_pending (EV_A_ (W)w); 1805 clear_pending (EV_A_ (W)w);
1422 if (ev_is_active (w)) 1806 if (expect_false (!ev_is_active (w)))
1423 return; 1807 return;
1424 1808
1425 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1809 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1426 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1427} 1811}
1428 1812
1813#if EV_STAT_ENABLE
1814
1815# ifdef _WIN32
1816# undef lstat
1817# define lstat(a,b) _stati64 (a,b)
1818# endif
1819
1820#define DEF_STAT_INTERVAL 5.0074891
1821#define MIN_STAT_INTERVAL 0.1074891
1822
1823static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1824
1825#if EV_USE_INOTIFY
1826# define EV_INOTIFY_BUFSIZE 8192
1827
1828static void noinline
1829infy_add (EV_P_ ev_stat *w)
1830{
1831 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);
1832
1833 if (w->wd < 0)
1834 {
1835 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1836
1837 /* monitor some parent directory for speedup hints */
1838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1839 {
1840 char path [4096];
1841 strcpy (path, w->path);
1842
1843 do
1844 {
1845 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1846 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1847
1848 char *pend = strrchr (path, '/');
1849
1850 if (!pend)
1851 break; /* whoops, no '/', complain to your admin */
1852
1853 *pend = 0;
1854 w->wd = inotify_add_watch (fs_fd, path, mask);
1855 }
1856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1857 }
1858 }
1859 else
1860 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1861
1862 if (w->wd >= 0)
1863 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1864}
1865
1866static void noinline
1867infy_del (EV_P_ ev_stat *w)
1868{
1869 int slot;
1870 int wd = w->wd;
1871
1872 if (wd < 0)
1873 return;
1874
1875 w->wd = -2;
1876 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1877 wlist_del (&fs_hash [slot].head, (WL)w);
1878
1879 /* remove this watcher, if others are watching it, they will rearm */
1880 inotify_rm_watch (fs_fd, wd);
1881}
1882
1883static void noinline
1884infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1885{
1886 if (slot < 0)
1887 /* overflow, need to check for all hahs slots */
1888 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1889 infy_wd (EV_A_ slot, wd, ev);
1890 else
1891 {
1892 WL w_;
1893
1894 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1895 {
1896 ev_stat *w = (ev_stat *)w_;
1897 w_ = w_->next; /* lets us remove this watcher and all before it */
1898
1899 if (w->wd == wd || wd == -1)
1900 {
1901 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1902 {
1903 w->wd = -1;
1904 infy_add (EV_A_ w); /* re-add, no matter what */
1905 }
1906
1907 stat_timer_cb (EV_A_ &w->timer, 0);
1908 }
1909 }
1910 }
1911}
1912
1913static void
1914infy_cb (EV_P_ ev_io *w, int revents)
1915{
1916 char buf [EV_INOTIFY_BUFSIZE];
1917 struct inotify_event *ev = (struct inotify_event *)buf;
1918 int ofs;
1919 int len = read (fs_fd, buf, sizeof (buf));
1920
1921 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1922 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1923}
1924
1925void inline_size
1926infy_init (EV_P)
1927{
1928 if (fs_fd != -2)
1929 return;
1930
1931 fs_fd = inotify_init ();
1932
1933 if (fs_fd >= 0)
1934 {
1935 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1936 ev_set_priority (&fs_w, EV_MAXPRI);
1937 ev_io_start (EV_A_ &fs_w);
1938 }
1939}
1940
1941void inline_size
1942infy_fork (EV_P)
1943{
1944 int slot;
1945
1946 if (fs_fd < 0)
1947 return;
1948
1949 close (fs_fd);
1950 fs_fd = inotify_init ();
1951
1952 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1953 {
1954 WL w_ = fs_hash [slot].head;
1955 fs_hash [slot].head = 0;
1956
1957 while (w_)
1958 {
1959 ev_stat *w = (ev_stat *)w_;
1960 w_ = w_->next; /* lets us add this watcher */
1961
1962 w->wd = -1;
1963
1964 if (fs_fd >= 0)
1965 infy_add (EV_A_ w); /* re-add, no matter what */
1966 else
1967 ev_timer_start (EV_A_ &w->timer);
1968 }
1969
1970 }
1971}
1972
1973#endif
1974
1975void
1976ev_stat_stat (EV_P_ ev_stat *w)
1977{
1978 if (lstat (w->path, &w->attr) < 0)
1979 w->attr.st_nlink = 0;
1980 else if (!w->attr.st_nlink)
1981 w->attr.st_nlink = 1;
1982}
1983
1984static void noinline
1985stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1986{
1987 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1988
1989 /* we copy this here each the time so that */
1990 /* prev has the old value when the callback gets invoked */
1991 w->prev = w->attr;
1992 ev_stat_stat (EV_A_ w);
1993
1994 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1995 if (
1996 w->prev.st_dev != w->attr.st_dev
1997 || w->prev.st_ino != w->attr.st_ino
1998 || w->prev.st_mode != w->attr.st_mode
1999 || w->prev.st_nlink != w->attr.st_nlink
2000 || w->prev.st_uid != w->attr.st_uid
2001 || w->prev.st_gid != w->attr.st_gid
2002 || w->prev.st_rdev != w->attr.st_rdev
2003 || w->prev.st_size != w->attr.st_size
2004 || w->prev.st_atime != w->attr.st_atime
2005 || w->prev.st_mtime != w->attr.st_mtime
2006 || w->prev.st_ctime != w->attr.st_ctime
2007 ) {
2008 #if EV_USE_INOTIFY
2009 infy_del (EV_A_ w);
2010 infy_add (EV_A_ w);
2011 ev_stat_stat (EV_A_ w); /* avoid race... */
2012 #endif
2013
2014 ev_feed_event (EV_A_ w, EV_STAT);
2015 }
2016}
2017
2018void
2019ev_stat_start (EV_P_ ev_stat *w)
2020{
2021 if (expect_false (ev_is_active (w)))
2022 return;
2023
2024 /* since we use memcmp, we need to clear any padding data etc. */
2025 memset (&w->prev, 0, sizeof (ev_statdata));
2026 memset (&w->attr, 0, sizeof (ev_statdata));
2027
2028 ev_stat_stat (EV_A_ w);
2029
2030 if (w->interval < MIN_STAT_INTERVAL)
2031 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2032
2033 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2034 ev_set_priority (&w->timer, ev_priority (w));
2035
2036#if EV_USE_INOTIFY
2037 infy_init (EV_A);
2038
2039 if (fs_fd >= 0)
2040 infy_add (EV_A_ w);
2041 else
2042#endif
2043 ev_timer_start (EV_A_ &w->timer);
2044
2045 ev_start (EV_A_ (W)w, 1);
2046}
2047
2048void
2049ev_stat_stop (EV_P_ ev_stat *w)
2050{
2051 clear_pending (EV_A_ (W)w);
2052 if (expect_false (!ev_is_active (w)))
2053 return;
2054
2055#if EV_USE_INOTIFY
2056 infy_del (EV_A_ w);
2057#endif
2058 ev_timer_stop (EV_A_ &w->timer);
2059
2060 ev_stop (EV_A_ (W)w);
2061}
2062#endif
2063
2064#if EV_IDLE_ENABLE
2065void
2066ev_idle_start (EV_P_ ev_idle *w)
2067{
2068 if (expect_false (ev_is_active (w)))
2069 return;
2070
2071 pri_adjust (EV_A_ (W)w);
2072
2073 {
2074 int active = ++idlecnt [ABSPRI (w)];
2075
2076 ++idleall;
2077 ev_start (EV_A_ (W)w, active);
2078
2079 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2080 idles [ABSPRI (w)][active - 1] = w;
2081 }
2082}
2083
2084void
2085ev_idle_stop (EV_P_ ev_idle *w)
2086{
2087 clear_pending (EV_A_ (W)w);
2088 if (expect_false (!ev_is_active (w)))
2089 return;
2090
2091 {
2092 int active = ((W)w)->active;
2093
2094 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2095 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2096
2097 ev_stop (EV_A_ (W)w);
2098 --idleall;
2099 }
2100}
2101#endif
2102
2103void
2104ev_prepare_start (EV_P_ ev_prepare *w)
2105{
2106 if (expect_false (ev_is_active (w)))
2107 return;
2108
2109 ev_start (EV_A_ (W)w, ++preparecnt);
2110 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2111 prepares [preparecnt - 1] = w;
2112}
2113
2114void
2115ev_prepare_stop (EV_P_ ev_prepare *w)
2116{
2117 clear_pending (EV_A_ (W)w);
2118 if (expect_false (!ev_is_active (w)))
2119 return;
2120
2121 {
2122 int active = ((W)w)->active;
2123 prepares [active - 1] = prepares [--preparecnt];
2124 ((W)prepares [active - 1])->active = active;
2125 }
2126
2127 ev_stop (EV_A_ (W)w);
2128}
2129
2130void
2131ev_check_start (EV_P_ ev_check *w)
2132{
2133 if (expect_false (ev_is_active (w)))
2134 return;
2135
2136 ev_start (EV_A_ (W)w, ++checkcnt);
2137 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2138 checks [checkcnt - 1] = w;
2139}
2140
2141void
2142ev_check_stop (EV_P_ ev_check *w)
2143{
2144 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w)))
2146 return;
2147
2148 {
2149 int active = ((W)w)->active;
2150 checks [active - 1] = checks [--checkcnt];
2151 ((W)checks [active - 1])->active = active;
2152 }
2153
2154 ev_stop (EV_A_ (W)w);
2155}
2156
2157#if EV_EMBED_ENABLE
2158void noinline
2159ev_embed_sweep (EV_P_ ev_embed *w)
2160{
2161 ev_loop (w->loop, EVLOOP_NONBLOCK);
2162}
2163
2164static void
2165embed_cb (EV_P_ ev_io *io, int revents)
2166{
2167 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2168
2169 if (ev_cb (w))
2170 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2171 else
2172 ev_embed_sweep (loop, w);
2173}
2174
2175void
2176ev_embed_start (EV_P_ ev_embed *w)
2177{
2178 if (expect_false (ev_is_active (w)))
2179 return;
2180
2181 {
2182 struct ev_loop *loop = w->loop;
2183 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2184 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2185 }
2186
2187 ev_set_priority (&w->io, ev_priority (w));
2188 ev_io_start (EV_A_ &w->io);
2189
2190 ev_start (EV_A_ (W)w, 1);
2191}
2192
2193void
2194ev_embed_stop (EV_P_ ev_embed *w)
2195{
2196 clear_pending (EV_A_ (W)w);
2197 if (expect_false (!ev_is_active (w)))
2198 return;
2199
2200 ev_io_stop (EV_A_ &w->io);
2201
2202 ev_stop (EV_A_ (W)w);
2203}
2204#endif
2205
2206#if EV_FORK_ENABLE
2207void
2208ev_fork_start (EV_P_ ev_fork *w)
2209{
2210 if (expect_false (ev_is_active (w)))
2211 return;
2212
2213 ev_start (EV_A_ (W)w, ++forkcnt);
2214 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2215 forks [forkcnt - 1] = w;
2216}
2217
2218void
2219ev_fork_stop (EV_P_ ev_fork *w)
2220{
2221 clear_pending (EV_A_ (W)w);
2222 if (expect_false (!ev_is_active (w)))
2223 return;
2224
2225 {
2226 int active = ((W)w)->active;
2227 forks [active - 1] = forks [--forkcnt];
2228 ((W)forks [active - 1])->active = active;
2229 }
2230
2231 ev_stop (EV_A_ (W)w);
2232}
2233#endif
2234
1429/*****************************************************************************/ 2235/*****************************************************************************/
1430 2236
1431struct ev_once 2237struct ev_once
1432{ 2238{
1433 struct ev_io io; 2239 ev_io io;
1434 struct ev_timer to; 2240 ev_timer to;
1435 void (*cb)(int revents, void *arg); 2241 void (*cb)(int revents, void *arg);
1436 void *arg; 2242 void *arg;
1437}; 2243};
1438 2244
1439static void 2245static void
… …
1448 2254
1449 cb (revents, arg); 2255 cb (revents, arg);
1450} 2256}
1451 2257
1452static void 2258static void
1453once_cb_io (EV_P_ struct ev_io *w, int revents) 2259once_cb_io (EV_P_ ev_io *w, int revents)
1454{ 2260{
1455 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1456} 2262}
1457 2263
1458static void 2264static void
1459once_cb_to (EV_P_ struct ev_timer *w, int revents) 2265once_cb_to (EV_P_ ev_timer *w, int revents)
1460{ 2266{
1461 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2267 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1462} 2268}
1463 2269
1464void 2270void
1465ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1466{ 2272{
1467 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468 2274
1469 if (!once) 2275 if (expect_false (!once))
2276 {
1470 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471 else 2278 return;
1472 { 2279 }
2280
1473 once->cb = cb; 2281 once->cb = cb;
1474 once->arg = arg; 2282 once->arg = arg;
1475 2283
1476 ev_watcher_init (&once->io, once_cb_io); 2284 ev_init (&once->io, once_cb_io);
1477 if (fd >= 0) 2285 if (fd >= 0)
1478 { 2286 {
1479 ev_io_set (&once->io, fd, events); 2287 ev_io_set (&once->io, fd, events);
1480 ev_io_start (EV_A_ &once->io); 2288 ev_io_start (EV_A_ &once->io);
1481 } 2289 }
1482 2290
1483 ev_watcher_init (&once->to, once_cb_to); 2291 ev_init (&once->to, once_cb_to);
1484 if (timeout >= 0.) 2292 if (timeout >= 0.)
1485 { 2293 {
1486 ev_timer_set (&once->to, timeout, 0.); 2294 ev_timer_set (&once->to, timeout, 0.);
1487 ev_timer_start (EV_A_ &once->to); 2295 ev_timer_start (EV_A_ &once->to);
1488 }
1489 } 2296 }
1490} 2297}
1491 2298
2299#ifdef __cplusplus
2300}
2301#endif
2302

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