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Comparing libev/ev.c (file contents):
Revision 1.76 by root, Wed Nov 7 18:47:26 2007 UTC vs.
Revision 1.171 by root, Sun Dec 9 02:12:43 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
71#ifndef WIN32 129#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 130# include <sys/time.h>
74# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
75#endif 138# endif
139#endif
140
76/**/ 141/**/
77 142
78#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1 144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
80#endif 149#endif
81 150
82#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
84#endif 153#endif
85 154
86#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
88#endif 161#endif
89 162
90#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
92#endif 165#endif
93 166
94#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
96#endif 169#endif
97 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
98#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
99# ifdef WIN32 176# define EV_USE_INOTIFY 0
100# define EV_USE_WIN32 0 /* it does not exist, use select */ 177#endif
101# undef EV_USE_SELECT 178
102# define EV_USE_SELECT 1 179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
103# else 182# else
104# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
105# endif 184# endif
106#endif 185#endif
107 186
108#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
109# define EV_USE_REALTIME 1 188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
110#endif 193#endif
111 194
112/**/ 195/**/
113 196
114#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
119#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
122#endif 205#endif
123 206
207#if EV_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
124/**/ 219/**/
125 220
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130
131#include "ev.h"
132 224
133#if __GNUC__ >= 3 225#if __GNUC__ >= 3
134# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 227# define noinline __attribute__ ((noinline))
136#else 228#else
137# define expect(expr,value) (expr) 229# define expect(expr,value) (expr)
138# define inline static 230# define noinline
231# if __STDC_VERSION__ < 199901L
232# define inline
233# endif
139#endif 234#endif
140 235
141#define expect_false(expr) expect ((expr) != 0, 0) 236#define expect_false(expr) expect ((expr) != 0, 0)
142#define expect_true(expr) expect ((expr) != 0, 1) 237#define expect_true(expr) expect ((expr) != 0, 1)
238#define inline_size static inline
239
240#if EV_MINIMAL
241# define inline_speed static noinline
242#else
243# define inline_speed static inline
244#endif
143 245
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 248
249#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */
251
147typedef struct ev_watcher *W; 252typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 253typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 254typedef ev_watcher_time *WT;
150 255
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152 257
258#ifdef _WIN32
153#include "ev_win32.c" 259# include "ev_win32.c"
260#endif
154 261
155/*****************************************************************************/ 262/*****************************************************************************/
156 263
157static void (*syserr_cb)(const char *msg); 264static void (*syserr_cb)(const char *msg);
158 265
266void
159void ev_set_syserr_cb (void (*cb)(const char *msg)) 267ev_set_syserr_cb (void (*cb)(const char *msg))
160{ 268{
161 syserr_cb = cb; 269 syserr_cb = cb;
162} 270}
163 271
164static void 272static void noinline
165syserr (const char *msg) 273syserr (const char *msg)
166{ 274{
167 if (!msg) 275 if (!msg)
168 msg = "(libev) system error"; 276 msg = "(libev) system error";
169 277
… …
176 } 284 }
177} 285}
178 286
179static void *(*alloc)(void *ptr, long size); 287static void *(*alloc)(void *ptr, long size);
180 288
289void
181void ev_set_allocator (void *(*cb)(void *ptr, long size)) 290ev_set_allocator (void *(*cb)(void *ptr, long size))
182{ 291{
183 alloc = cb; 292 alloc = cb;
184} 293}
185 294
186static void * 295inline_speed void *
187ev_realloc (void *ptr, long size) 296ev_realloc (void *ptr, long size)
188{ 297{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190 299
191 if (!ptr && size) 300 if (!ptr && size)
… …
205typedef struct 314typedef struct
206{ 315{
207 WL head; 316 WL head;
208 unsigned char events; 317 unsigned char events;
209 unsigned char reify; 318 unsigned char reify;
319#if EV_SELECT_IS_WINSOCKET
320 SOCKET handle;
321#endif
210} ANFD; 322} ANFD;
211 323
212typedef struct 324typedef struct
213{ 325{
214 W w; 326 W w;
215 int events; 327 int events;
216} ANPENDING; 328} ANPENDING;
217 329
330#if EV_USE_INOTIFY
331typedef struct
332{
333 WL head;
334} ANFS;
335#endif
336
218#if EV_MULTIPLICITY 337#if EV_MULTIPLICITY
219 338
220struct ev_loop 339 struct ev_loop
221{ 340 {
341 ev_tstamp ev_rt_now;
342 #define ev_rt_now ((loop)->ev_rt_now)
222# define VAR(name,decl) decl; 343 #define VAR(name,decl) decl;
223# include "ev_vars.h" 344 #include "ev_vars.h"
224};
225# undef VAR 345 #undef VAR
346 };
226# include "ev_wrap.h" 347 #include "ev_wrap.h"
348
349 static struct ev_loop default_loop_struct;
350 struct ev_loop *ev_default_loop_ptr;
227 351
228#else 352#else
229 353
354 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 355 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 356 #include "ev_vars.h"
232# undef VAR 357 #undef VAR
358
359 static int ev_default_loop_ptr;
233 360
234#endif 361#endif
235 362
236/*****************************************************************************/ 363/*****************************************************************************/
237 364
238inline ev_tstamp 365ev_tstamp
239ev_time (void) 366ev_time (void)
240{ 367{
241#if EV_USE_REALTIME 368#if EV_USE_REALTIME
242 struct timespec ts; 369 struct timespec ts;
243 clock_gettime (CLOCK_REALTIME, &ts); 370 clock_gettime (CLOCK_REALTIME, &ts);
… …
247 gettimeofday (&tv, 0); 374 gettimeofday (&tv, 0);
248 return tv.tv_sec + tv.tv_usec * 1e-6; 375 return tv.tv_sec + tv.tv_usec * 1e-6;
249#endif 376#endif
250} 377}
251 378
252inline ev_tstamp 379ev_tstamp inline_size
253get_clock (void) 380get_clock (void)
254{ 381{
255#if EV_USE_MONOTONIC 382#if EV_USE_MONOTONIC
256 if (expect_true (have_monotonic)) 383 if (expect_true (have_monotonic))
257 { 384 {
… …
262#endif 389#endif
263 390
264 return ev_time (); 391 return ev_time ();
265} 392}
266 393
394#if EV_MULTIPLICITY
267ev_tstamp 395ev_tstamp
268ev_now (EV_P) 396ev_now (EV_P)
269{ 397{
270 return rt_now; 398 return ev_rt_now;
271} 399}
400#endif
272 401
273#define array_roundsize(type,n) ((n) | 4 & ~3) 402int inline_size
403array_nextsize (int elem, int cur, int cnt)
404{
405 int ncur = cur + 1;
406
407 do
408 ncur <<= 1;
409 while (cnt > ncur);
410
411 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
412 if (elem * ncur > 4096)
413 {
414 ncur *= elem;
415 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
416 ncur = ncur - sizeof (void *) * 4;
417 ncur /= elem;
418 }
419
420 return ncur;
421}
422
423static noinline void *
424array_realloc (int elem, void *base, int *cur, int cnt)
425{
426 *cur = array_nextsize (elem, *cur, cnt);
427 return ev_realloc (base, elem * *cur);
428}
274 429
275#define array_needsize(type,base,cur,cnt,init) \ 430#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 431 if (expect_false ((cnt) > (cur))) \
277 { \ 432 { \
278 int newcnt = cur; \ 433 int ocur_ = (cur); \
279 do \ 434 (base) = (type *)array_realloc \
280 { \ 435 (sizeof (type), (base), &(cur), (cnt)); \
281 newcnt = array_roundsize (type, newcnt << 1); \ 436 init ((base) + (ocur_), (cur) - ocur_); \
282 } \
283 while ((cnt) > newcnt); \
284 \
285 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286 init (base + cur, newcnt - cur); \
287 cur = newcnt; \
288 } 437 }
289 438
439#if 0
290#define array_slim(type,stem) \ 440#define array_slim(type,stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 441 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \ 442 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \ 443 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 444 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 } 446 }
297 447#endif
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302 448
303#define array_free(stem, idx) \ 449#define array_free(stem, idx) \
304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 450 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305 451
306/*****************************************************************************/ 452/*****************************************************************************/
307 453
308static void 454void noinline
455ev_feed_event (EV_P_ void *w, int revents)
456{
457 W w_ = (W)w;
458 int pri = ABSPRI (w_);
459
460 if (expect_false (w_->pending))
461 pendings [pri][w_->pending - 1].events |= revents;
462 else
463 {
464 w_->pending = ++pendingcnt [pri];
465 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
466 pendings [pri][w_->pending - 1].w = w_;
467 pendings [pri][w_->pending - 1].events = revents;
468 }
469}
470
471void inline_size
472queue_events (EV_P_ W *events, int eventcnt, int type)
473{
474 int i;
475
476 for (i = 0; i < eventcnt; ++i)
477 ev_feed_event (EV_A_ events [i], type);
478}
479
480/*****************************************************************************/
481
482void inline_size
309anfds_init (ANFD *base, int count) 483anfds_init (ANFD *base, int count)
310{ 484{
311 while (count--) 485 while (count--)
312 { 486 {
313 base->head = 0; 487 base->head = 0;
… …
316 490
317 ++base; 491 ++base;
318 } 492 }
319} 493}
320 494
321static void 495void inline_speed
322event (EV_P_ W w, int events)
323{
324 if (w->pending)
325 {
326 pendings [ABSPRI (w)][w->pending - 1].events |= events;
327 return;
328 }
329
330 w->pending = ++pendingcnt [ABSPRI (w)];
331 array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
332 pendings [ABSPRI (w)][w->pending - 1].w = w;
333 pendings [ABSPRI (w)][w->pending - 1].events = events;
334}
335
336static void
337queue_events (EV_P_ W *events, int eventcnt, int type)
338{
339 int i;
340
341 for (i = 0; i < eventcnt; ++i)
342 event (EV_A_ events [i], type);
343}
344
345static void
346fd_event (EV_P_ int fd, int events) 496fd_event (EV_P_ int fd, int revents)
347{ 497{
348 ANFD *anfd = anfds + fd; 498 ANFD *anfd = anfds + fd;
349 struct ev_io *w; 499 ev_io *w;
350 500
351 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 501 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
352 { 502 {
353 int ev = w->events & events; 503 int ev = w->events & revents;
354 504
355 if (ev) 505 if (ev)
356 event (EV_A_ (W)w, ev); 506 ev_feed_event (EV_A_ (W)w, ev);
357 } 507 }
358} 508}
359 509
360/*****************************************************************************/ 510void
511ev_feed_fd_event (EV_P_ int fd, int revents)
512{
513 if (fd >= 0 && fd < anfdmax)
514 fd_event (EV_A_ fd, revents);
515}
361 516
362static void 517void inline_size
363fd_reify (EV_P) 518fd_reify (EV_P)
364{ 519{
365 int i; 520 int i;
366 521
367 for (i = 0; i < fdchangecnt; ++i) 522 for (i = 0; i < fdchangecnt; ++i)
368 { 523 {
369 int fd = fdchanges [i]; 524 int fd = fdchanges [i];
370 ANFD *anfd = anfds + fd; 525 ANFD *anfd = anfds + fd;
371 struct ev_io *w; 526 ev_io *w;
372 527
373 int events = 0; 528 int events = 0;
374 529
375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 530 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
376 events |= w->events; 531 events |= w->events;
377 532
533#if EV_SELECT_IS_WINSOCKET
534 if (events)
535 {
536 unsigned long argp;
537 anfd->handle = _get_osfhandle (fd);
538 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
539 }
540#endif
541
378 anfd->reify = 0; 542 anfd->reify = 0;
379 543
380 method_modify (EV_A_ fd, anfd->events, events); 544 backend_modify (EV_A_ fd, anfd->events, events);
381 anfd->events = events; 545 anfd->events = events;
382 } 546 }
383 547
384 fdchangecnt = 0; 548 fdchangecnt = 0;
385} 549}
386 550
387static void 551void inline_size
388fd_change (EV_P_ int fd) 552fd_change (EV_P_ int fd)
389{ 553{
390 if (anfds [fd].reify) 554 if (expect_false (anfds [fd].reify))
391 return; 555 return;
392 556
393 anfds [fd].reify = 1; 557 anfds [fd].reify = 1;
394 558
395 ++fdchangecnt; 559 ++fdchangecnt;
396 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397 fdchanges [fdchangecnt - 1] = fd; 561 fdchanges [fdchangecnt - 1] = fd;
398} 562}
399 563
400static void 564void inline_speed
401fd_kill (EV_P_ int fd) 565fd_kill (EV_P_ int fd)
402{ 566{
403 struct ev_io *w; 567 ev_io *w;
404 568
405 while ((w = (struct ev_io *)anfds [fd].head)) 569 while ((w = (ev_io *)anfds [fd].head))
406 { 570 {
407 ev_io_stop (EV_A_ w); 571 ev_io_stop (EV_A_ w);
408 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 572 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
409 } 573 }
410} 574}
411 575
412static int 576int inline_size
413fd_valid (int fd) 577fd_valid (int fd)
414{ 578{
415#ifdef WIN32 579#ifdef _WIN32
416 return !!win32_get_osfhandle (fd); 580 return _get_osfhandle (fd) != -1;
417#else 581#else
418 return fcntl (fd, F_GETFD) != -1; 582 return fcntl (fd, F_GETFD) != -1;
419#endif 583#endif
420} 584}
421 585
422/* called on EBADF to verify fds */ 586/* called on EBADF to verify fds */
423static void 587static void noinline
424fd_ebadf (EV_P) 588fd_ebadf (EV_P)
425{ 589{
426 int fd; 590 int fd;
427 591
428 for (fd = 0; fd < anfdmax; ++fd) 592 for (fd = 0; fd < anfdmax; ++fd)
… …
430 if (!fd_valid (fd) == -1 && errno == EBADF) 594 if (!fd_valid (fd) == -1 && errno == EBADF)
431 fd_kill (EV_A_ fd); 595 fd_kill (EV_A_ fd);
432} 596}
433 597
434/* called on ENOMEM in select/poll to kill some fds and retry */ 598/* called on ENOMEM in select/poll to kill some fds and retry */
435static void 599static void noinline
436fd_enomem (EV_P) 600fd_enomem (EV_P)
437{ 601{
438 int fd; 602 int fd;
439 603
440 for (fd = anfdmax; fd--; ) 604 for (fd = anfdmax; fd--; )
… …
443 fd_kill (EV_A_ fd); 607 fd_kill (EV_A_ fd);
444 return; 608 return;
445 } 609 }
446} 610}
447 611
448/* usually called after fork if method needs to re-arm all fds from scratch */ 612/* usually called after fork if backend needs to re-arm all fds from scratch */
449static void 613static void noinline
450fd_rearm_all (EV_P) 614fd_rearm_all (EV_P)
451{ 615{
452 int fd; 616 int fd;
453 617
454 /* this should be highly optimised to not do anything but set a flag */
455 for (fd = 0; fd < anfdmax; ++fd) 618 for (fd = 0; fd < anfdmax; ++fd)
456 if (anfds [fd].events) 619 if (anfds [fd].events)
457 { 620 {
458 anfds [fd].events = 0; 621 anfds [fd].events = 0;
459 fd_change (EV_A_ fd); 622 fd_change (EV_A_ fd);
460 } 623 }
461} 624}
462 625
463/*****************************************************************************/ 626/*****************************************************************************/
464 627
465static void 628void inline_speed
466upheap (WT *heap, int k) 629upheap (WT *heap, int k)
467{ 630{
468 WT w = heap [k]; 631 WT w = heap [k];
469 632
470 while (k && heap [k >> 1]->at > w->at) 633 while (k && heap [k >> 1]->at > w->at)
… …
477 heap [k] = w; 640 heap [k] = w;
478 ((W)heap [k])->active = k + 1; 641 ((W)heap [k])->active = k + 1;
479 642
480} 643}
481 644
482static void 645void inline_speed
483downheap (WT *heap, int N, int k) 646downheap (WT *heap, int N, int k)
484{ 647{
485 WT w = heap [k]; 648 WT w = heap [k];
486 649
487 while (k < (N >> 1)) 650 while (k < (N >> 1))
… …
501 664
502 heap [k] = w; 665 heap [k] = w;
503 ((W)heap [k])->active = k + 1; 666 ((W)heap [k])->active = k + 1;
504} 667}
505 668
669void inline_size
670adjustheap (WT *heap, int N, int k)
671{
672 upheap (heap, k);
673 downheap (heap, N, k);
674}
675
506/*****************************************************************************/ 676/*****************************************************************************/
507 677
508typedef struct 678typedef struct
509{ 679{
510 WL head; 680 WL head;
… …
514static ANSIG *signals; 684static ANSIG *signals;
515static int signalmax; 685static int signalmax;
516 686
517static int sigpipe [2]; 687static int sigpipe [2];
518static sig_atomic_t volatile gotsig; 688static sig_atomic_t volatile gotsig;
519static struct ev_io sigev; 689static ev_io sigev;
520 690
521static void 691void inline_size
522signals_init (ANSIG *base, int count) 692signals_init (ANSIG *base, int count)
523{ 693{
524 while (count--) 694 while (count--)
525 { 695 {
526 base->head = 0; 696 base->head = 0;
… …
531} 701}
532 702
533static void 703static void
534sighandler (int signum) 704sighandler (int signum)
535{ 705{
536#if WIN32 706#if _WIN32
537 signal (signum, sighandler); 707 signal (signum, sighandler);
538#endif 708#endif
539 709
540 signals [signum - 1].gotsig = 1; 710 signals [signum - 1].gotsig = 1;
541 711
542 if (!gotsig) 712 if (!gotsig)
543 { 713 {
544 int old_errno = errno; 714 int old_errno = errno;
545 gotsig = 1; 715 gotsig = 1;
546#ifdef WIN32
547 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548#else
549 write (sigpipe [1], &signum, 1); 716 write (sigpipe [1], &signum, 1);
550#endif
551 errno = old_errno; 717 errno = old_errno;
552 } 718 }
553} 719}
554 720
721void noinline
722ev_feed_signal_event (EV_P_ int signum)
723{
724 WL w;
725
726#if EV_MULTIPLICITY
727 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
728#endif
729
730 --signum;
731
732 if (signum < 0 || signum >= signalmax)
733 return;
734
735 signals [signum].gotsig = 0;
736
737 for (w = signals [signum].head; w; w = w->next)
738 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
739}
740
555static void 741static void
556sigcb (EV_P_ struct ev_io *iow, int revents) 742sigcb (EV_P_ ev_io *iow, int revents)
557{ 743{
558 WL w;
559 int signum; 744 int signum;
560 745
561#ifdef WIN32
562 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563#else
564 read (sigpipe [0], &revents, 1); 746 read (sigpipe [0], &revents, 1);
565#endif
566 gotsig = 0; 747 gotsig = 0;
567 748
568 for (signum = signalmax; signum--; ) 749 for (signum = signalmax; signum--; )
569 if (signals [signum].gotsig) 750 if (signals [signum].gotsig)
570 { 751 ev_feed_signal_event (EV_A_ signum + 1);
571 signals [signum].gotsig = 0;
572
573 for (w = signals [signum].head; w; w = w->next)
574 event (EV_A_ (W)w, EV_SIGNAL);
575 }
576} 752}
577 753
578static void 754void inline_speed
755fd_intern (int fd)
756{
757#ifdef _WIN32
758 int arg = 1;
759 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
760#else
761 fcntl (fd, F_SETFD, FD_CLOEXEC);
762 fcntl (fd, F_SETFL, O_NONBLOCK);
763#endif
764}
765
766static void noinline
579siginit (EV_P) 767siginit (EV_P)
580{ 768{
581#ifndef WIN32 769 fd_intern (sigpipe [0]);
582 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 770 fd_intern (sigpipe [1]);
583 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585 /* rather than sort out wether we really need nb, set it */
586 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588#endif
589 771
590 ev_io_set (&sigev, sigpipe [0], EV_READ); 772 ev_io_set (&sigev, sigpipe [0], EV_READ);
591 ev_io_start (EV_A_ &sigev); 773 ev_io_start (EV_A_ &sigev);
592 ev_unref (EV_A); /* child watcher should not keep loop alive */ 774 ev_unref (EV_A); /* child watcher should not keep loop alive */
593} 775}
594 776
595/*****************************************************************************/ 777/*****************************************************************************/
596 778
597static struct ev_child *childs [PID_HASHSIZE]; 779static ev_child *childs [EV_PID_HASHSIZE];
598 780
599#ifndef WIN32 781#ifndef _WIN32
600 782
601static struct ev_signal childev; 783static ev_signal childev;
784
785void inline_speed
786child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
787{
788 ev_child *w;
789
790 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
791 if (w->pid == pid || !w->pid)
792 {
793 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
794 w->rpid = pid;
795 w->rstatus = status;
796 ev_feed_event (EV_A_ (W)w, EV_CHILD);
797 }
798}
602 799
603#ifndef WCONTINUED 800#ifndef WCONTINUED
604# define WCONTINUED 0 801# define WCONTINUED 0
605#endif 802#endif
606 803
607static void 804static void
608child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
609{
610 struct ev_child *w;
611
612 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
613 if (w->pid == pid || !w->pid)
614 {
615 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616 w->rpid = pid;
617 w->rstatus = status;
618 event (EV_A_ (W)w, EV_CHILD);
619 }
620}
621
622static void
623childcb (EV_P_ struct ev_signal *sw, int revents) 805childcb (EV_P_ ev_signal *sw, int revents)
624{ 806{
625 int pid, status; 807 int pid, status;
626 808
809 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 810 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628 { 811 if (!WCONTINUED
812 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return;
815
629 /* make sure we are called again until all childs have been reaped */ 816 /* make sure we are called again until all childs have been reaped */
817 /* we need to do it this way so that the callback gets called before we continue */
630 event (EV_A_ (W)sw, EV_SIGNAL); 818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631 819
632 child_reap (EV_A_ sw, pid, pid, status); 820 child_reap (EV_A_ sw, pid, pid, status);
821 if (EV_PID_HASHSIZE > 1)
633 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 822 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634 }
635} 823}
636 824
637#endif 825#endif
638 826
639/*****************************************************************************/ 827/*****************************************************************************/
640 828
829#if EV_USE_PORT
830# include "ev_port.c"
831#endif
641#if EV_USE_KQUEUE 832#if EV_USE_KQUEUE
642# include "ev_kqueue.c" 833# include "ev_kqueue.c"
643#endif 834#endif
644#if EV_USE_EPOLL 835#if EV_USE_EPOLL
645# include "ev_epoll.c" 836# include "ev_epoll.c"
… …
662{ 853{
663 return EV_VERSION_MINOR; 854 return EV_VERSION_MINOR;
664} 855}
665 856
666/* return true if we are running with elevated privileges and should ignore env variables */ 857/* return true if we are running with elevated privileges and should ignore env variables */
667static int 858int inline_size
668enable_secure (void) 859enable_secure (void)
669{ 860{
670#ifdef WIN32 861#ifdef _WIN32
671 return 0; 862 return 0;
672#else 863#else
673 return getuid () != geteuid () 864 return getuid () != geteuid ()
674 || getgid () != getegid (); 865 || getgid () != getegid ();
675#endif 866#endif
676} 867}
677 868
678int 869unsigned int
679ev_method (EV_P) 870ev_supported_backends (void)
680{ 871{
681 return method; 872 unsigned int flags = 0;
682}
683 873
684static void 874 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685loop_init (EV_P_ int methods) 875 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
876 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
877 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
878 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
879
880 return flags;
881}
882
883unsigned int
884ev_recommended_backends (void)
686{ 885{
687 if (!method) 886 unsigned int flags = ev_supported_backends ();
887
888#ifndef __NetBSD__
889 /* kqueue is borked on everything but netbsd apparently */
890 /* it usually doesn't work correctly on anything but sockets and pipes */
891 flags &= ~EVBACKEND_KQUEUE;
892#endif
893#ifdef __APPLE__
894 // flags &= ~EVBACKEND_KQUEUE; for documentation
895 flags &= ~EVBACKEND_POLL;
896#endif
897
898 return flags;
899}
900
901unsigned int
902ev_embeddable_backends (void)
903{
904 return EVBACKEND_EPOLL
905 | EVBACKEND_KQUEUE
906 | EVBACKEND_PORT;
907}
908
909unsigned int
910ev_backend (EV_P)
911{
912 return backend;
913}
914
915unsigned int
916ev_loop_count (EV_P)
917{
918 return loop_count;
919}
920
921static void noinline
922loop_init (EV_P_ unsigned int flags)
923{
924 if (!backend)
688 { 925 {
689#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
690 { 927 {
691 struct timespec ts; 928 struct timespec ts;
692 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 929 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693 have_monotonic = 1; 930 have_monotonic = 1;
694 } 931 }
695#endif 932#endif
696 933
697 rt_now = ev_time (); 934 ev_rt_now = ev_time ();
698 mn_now = get_clock (); 935 mn_now = get_clock ();
699 now_floor = mn_now; 936 now_floor = mn_now;
700 rtmn_diff = rt_now - mn_now; 937 rtmn_diff = ev_rt_now - mn_now;
701 938
702 if (methods == EVMETHOD_AUTO) 939 /* pid check not overridable via env */
703 if (!enable_secure () && getenv ("LIBEV_METHODS")) 940#ifndef _WIN32
941 if (flags & EVFLAG_FORKCHECK)
942 curpid = getpid ();
943#endif
944
945 if (!(flags & EVFLAG_NOENV)
946 && !enable_secure ()
947 && getenv ("LIBEV_FLAGS"))
704 methods = atoi (getenv ("LIBEV_METHODS")); 948 flags = atoi (getenv ("LIBEV_FLAGS"));
705 else
706 methods = EVMETHOD_ANY;
707 949
708 method = 0; 950 if (!(flags & 0x0000ffffUL))
951 flags |= ev_recommended_backends ();
952
953 backend = 0;
954 backend_fd = -1;
709#if EV_USE_WIN32 955#if EV_USE_INOTIFY
710 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 956 fs_fd = -2;
957#endif
958
959#if EV_USE_PORT
960 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711#endif 961#endif
712#if EV_USE_KQUEUE 962#if EV_USE_KQUEUE
713 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714#endif 964#endif
715#if EV_USE_EPOLL 965#if EV_USE_EPOLL
716 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717#endif 967#endif
718#if EV_USE_POLL 968#if EV_USE_POLL
719 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720#endif 970#endif
721#if EV_USE_SELECT 971#if EV_USE_SELECT
722 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723#endif 973#endif
724 974
725 ev_watcher_init (&sigev, sigcb); 975 ev_init (&sigev, sigcb);
726 ev_set_priority (&sigev, EV_MAXPRI); 976 ev_set_priority (&sigev, EV_MAXPRI);
727 } 977 }
728} 978}
729 979
730void 980static void noinline
731loop_destroy (EV_P) 981loop_destroy (EV_P)
732{ 982{
733 int i; 983 int i;
734 984
735#if EV_USE_WIN32 985#if EV_USE_INOTIFY
736 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 986 if (fs_fd >= 0)
987 close (fs_fd);
988#endif
989
990 if (backend_fd >= 0)
991 close (backend_fd);
992
993#if EV_USE_PORT
994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737#endif 995#endif
738#if EV_USE_KQUEUE 996#if EV_USE_KQUEUE
739 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740#endif 998#endif
741#if EV_USE_EPOLL 999#if EV_USE_EPOLL
742 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1000 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743#endif 1001#endif
744#if EV_USE_POLL 1002#if EV_USE_POLL
745 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1003 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746#endif 1004#endif
747#if EV_USE_SELECT 1005#if EV_USE_SELECT
748 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1006 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749#endif 1007#endif
750 1008
751 for (i = NUMPRI; i--; ) 1009 for (i = NUMPRI; i--; )
1010 {
752 array_free (pending, [i]); 1011 array_free (pending, [i]);
1012#if EV_IDLE_ENABLE
1013 array_free (idle, [i]);
1014#endif
1015 }
753 1016
754 /* have to use the microsoft-never-gets-it-right macro */ 1017 /* have to use the microsoft-never-gets-it-right macro */
755 array_free_microshit (fdchange); 1018 array_free (fdchange, EMPTY);
756 array_free_microshit (timer); 1019 array_free (timer, EMPTY);
757 array_free_microshit (periodic); 1020#if EV_PERIODIC_ENABLE
758 array_free_microshit (idle); 1021 array_free (periodic, EMPTY);
759 array_free_microshit (prepare); 1022#endif
760 array_free_microshit (check); 1023 array_free (prepare, EMPTY);
1024 array_free (check, EMPTY);
761 1025
762 method = 0; 1026 backend = 0;
763} 1027}
764 1028
765static void 1029void inline_size infy_fork (EV_P);
1030
1031void inline_size
766loop_fork (EV_P) 1032loop_fork (EV_P)
767{ 1033{
1034#if EV_USE_PORT
1035 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1036#endif
1037#if EV_USE_KQUEUE
1038 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1039#endif
768#if EV_USE_EPOLL 1040#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1041 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770#endif 1042#endif
771#if EV_USE_KQUEUE 1043#if EV_USE_INOTIFY
772 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1044 infy_fork (EV_A);
773#endif 1045#endif
774 1046
775 if (ev_is_active (&sigev)) 1047 if (ev_is_active (&sigev))
776 { 1048 {
777 /* default loop */ 1049 /* default loop */
… …
790 postfork = 0; 1062 postfork = 0;
791} 1063}
792 1064
793#if EV_MULTIPLICITY 1065#if EV_MULTIPLICITY
794struct ev_loop * 1066struct ev_loop *
795ev_loop_new (int methods) 1067ev_loop_new (unsigned int flags)
796{ 1068{
797 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1069 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798 1070
799 memset (loop, 0, sizeof (struct ev_loop)); 1071 memset (loop, 0, sizeof (struct ev_loop));
800 1072
801 loop_init (EV_A_ methods); 1073 loop_init (EV_A_ flags);
802 1074
803 if (ev_method (EV_A)) 1075 if (ev_backend (EV_A))
804 return loop; 1076 return loop;
805 1077
806 return 0; 1078 return 0;
807} 1079}
808 1080
… …
820} 1092}
821 1093
822#endif 1094#endif
823 1095
824#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
825struct ev_loop default_loop_struct;
826static struct ev_loop *default_loop;
827
828struct ev_loop * 1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
829#else 1099#else
830static int default_loop;
831
832int 1100int
1101ev_default_loop (unsigned int flags)
833#endif 1102#endif
834ev_default_loop (int methods)
835{ 1103{
836 if (sigpipe [0] == sigpipe [1]) 1104 if (sigpipe [0] == sigpipe [1])
837 if (pipe (sigpipe)) 1105 if (pipe (sigpipe))
838 return 0; 1106 return 0;
839 1107
840 if (!default_loop) 1108 if (!ev_default_loop_ptr)
841 { 1109 {
842#if EV_MULTIPLICITY 1110#if EV_MULTIPLICITY
843 struct ev_loop *loop = default_loop = &default_loop_struct; 1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844#else 1112#else
845 default_loop = 1; 1113 ev_default_loop_ptr = 1;
846#endif 1114#endif
847 1115
848 loop_init (EV_A_ methods); 1116 loop_init (EV_A_ flags);
849 1117
850 if (ev_method (EV_A)) 1118 if (ev_backend (EV_A))
851 { 1119 {
852 siginit (EV_A); 1120 siginit (EV_A);
853 1121
854#ifndef WIN32 1122#ifndef _WIN32
855 ev_signal_init (&childev, childcb, SIGCHLD); 1123 ev_signal_init (&childev, childcb, SIGCHLD);
856 ev_set_priority (&childev, EV_MAXPRI); 1124 ev_set_priority (&childev, EV_MAXPRI);
857 ev_signal_start (EV_A_ &childev); 1125 ev_signal_start (EV_A_ &childev);
858 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1126 ev_unref (EV_A); /* child watcher should not keep loop alive */
859#endif 1127#endif
860 } 1128 }
861 else 1129 else
862 default_loop = 0; 1130 ev_default_loop_ptr = 0;
863 } 1131 }
864 1132
865 return default_loop; 1133 return ev_default_loop_ptr;
866} 1134}
867 1135
868void 1136void
869ev_default_destroy (void) 1137ev_default_destroy (void)
870{ 1138{
871#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
872 struct ev_loop *loop = default_loop; 1140 struct ev_loop *loop = ev_default_loop_ptr;
873#endif 1141#endif
874 1142
875#ifndef WIN32 1143#ifndef _WIN32
876 ev_ref (EV_A); /* child watcher */ 1144 ev_ref (EV_A); /* child watcher */
877 ev_signal_stop (EV_A_ &childev); 1145 ev_signal_stop (EV_A_ &childev);
878#endif 1146#endif
879 1147
880 ev_ref (EV_A); /* signal watcher */ 1148 ev_ref (EV_A); /* signal watcher */
… …
888 1156
889void 1157void
890ev_default_fork (void) 1158ev_default_fork (void)
891{ 1159{
892#if EV_MULTIPLICITY 1160#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop; 1161 struct ev_loop *loop = ev_default_loop_ptr;
894#endif 1162#endif
895 1163
896 if (method) 1164 if (backend)
897 postfork = 1; 1165 postfork = 1;
898} 1166}
899 1167
900/*****************************************************************************/ 1168/*****************************************************************************/
901 1169
902static int 1170void
903any_pending (EV_P) 1171ev_invoke (EV_P_ void *w, int revents)
904{ 1172{
905 int pri; 1173 EV_CB_INVOKE ((W)w, revents);
906
907 for (pri = NUMPRI; pri--; )
908 if (pendingcnt [pri])
909 return 1;
910
911 return 0;
912} 1174}
913 1175
914static void 1176void inline_speed
915call_pending (EV_P) 1177call_pending (EV_P)
916{ 1178{
917 int pri; 1179 int pri;
918 1180
919 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
920 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
921 { 1183 {
922 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923 1185
924 if (p->w) 1186 if (expect_true (p->w))
925 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
926 p->w->pending = 0; 1190 p->w->pending = 0;
927 p->w->cb (EV_A_ p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
928 } 1192 }
929 } 1193 }
930} 1194}
931 1195
932static void 1196void inline_size
933timers_reify (EV_P) 1197timers_reify (EV_P)
934{ 1198{
935 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
936 { 1200 {
937 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
938 1202
939 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
940 1204
941 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
942 if (w->repeat) 1206 if (w->repeat)
943 { 1207 {
944 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
945 ((WT)w)->at = mn_now + w->repeat; 1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
946 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
947 } 1215 }
948 else 1216 else
949 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950 1218
951 event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952 } 1220 }
953} 1221}
954 1222
955static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
956periodics_reify (EV_P) 1225periodics_reify (EV_P)
957{ 1226{
958 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959 { 1228 {
960 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
961 1230
962 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
963 1232
964 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
965 if (w->interval) 1234 if (w->reschedule_cb)
966 { 1235 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238 downheap ((WT *)periodics, periodiccnt, 0);
1239 }
1240 else if (w->interval)
1241 {
967 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
968 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
969 downheap ((WT *)periodics, periodiccnt, 0); 1244 downheap ((WT *)periodics, periodiccnt, 0);
970 } 1245 }
971 else 1246 else
972 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
973 1248
974 event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
975 } 1250 }
976} 1251}
977 1252
978static void 1253static void noinline
979periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
980{ 1255{
981 int i; 1256 int i;
982 1257
983 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
984 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
985 { 1260 {
986 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
987 1262
1263 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
988 if (w->interval) 1265 else if (w->interval)
1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1267 }
1268
1269 /* now rebuild the heap */
1270 for (i = periodiccnt >> 1; i--; )
1271 downheap ((WT *)periodics, periodiccnt, i);
1272}
1273#endif
1274
1275#if EV_IDLE_ENABLE
1276void inline_size
1277idle_reify (EV_P)
1278{
1279 if (expect_false (idleall))
1280 {
1281 int pri;
1282
1283 for (pri = NUMPRI; pri--; )
989 { 1284 {
990 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1285 if (pendingcnt [pri])
1286 break;
991 1287
992 if (fabs (diff) >= 1e-4) 1288 if (idlecnt [pri])
993 { 1289 {
994 ev_periodic_stop (EV_A_ w); 1290 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
995 ev_periodic_start (EV_A_ w); 1291 break;
996
997 i = 0; /* restart loop, inefficient, but time jumps should be rare */
998 } 1292 }
999 } 1293 }
1000 } 1294 }
1001} 1295}
1296#endif
1002 1297
1003inline int 1298int inline_size
1004time_update_monotonic (EV_P) 1299time_update_monotonic (EV_P)
1005{ 1300{
1006 mn_now = get_clock (); 1301 mn_now = get_clock ();
1007 1302
1008 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1009 { 1304 {
1010 rt_now = rtmn_diff + mn_now; 1305 ev_rt_now = rtmn_diff + mn_now;
1011 return 0; 1306 return 0;
1012 } 1307 }
1013 else 1308 else
1014 { 1309 {
1015 now_floor = mn_now; 1310 now_floor = mn_now;
1016 rt_now = ev_time (); 1311 ev_rt_now = ev_time ();
1017 return 1; 1312 return 1;
1018 } 1313 }
1019} 1314}
1020 1315
1021static void 1316void inline_size
1022time_update (EV_P) 1317time_update (EV_P)
1023{ 1318{
1024 int i; 1319 int i;
1025 1320
1026#if EV_USE_MONOTONIC 1321#if EV_USE_MONOTONIC
… …
1028 { 1323 {
1029 if (time_update_monotonic (EV_A)) 1324 if (time_update_monotonic (EV_A))
1030 { 1325 {
1031 ev_tstamp odiff = rtmn_diff; 1326 ev_tstamp odiff = rtmn_diff;
1032 1327
1033 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1328 /* loop a few times, before making important decisions.
1329 * on the choice of "4": one iteration isn't enough,
1330 * in case we get preempted during the calls to
1331 * ev_time and get_clock. a second call is almost guaranteed
1332 * to succeed in that case, though. and looping a few more times
1333 * doesn't hurt either as we only do this on time-jumps or
1334 * in the unlikely event of having been preempted here.
1335 */
1336 for (i = 4; --i; )
1034 { 1337 {
1035 rtmn_diff = rt_now - mn_now; 1338 rtmn_diff = ev_rt_now - mn_now;
1036 1339
1037 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1038 return; /* all is well */ 1341 return; /* all is well */
1039 1342
1040 rt_now = ev_time (); 1343 ev_rt_now = ev_time ();
1041 mn_now = get_clock (); 1344 mn_now = get_clock ();
1042 now_floor = mn_now; 1345 now_floor = mn_now;
1043 } 1346 }
1044 1347
1348# if EV_PERIODIC_ENABLE
1045 periodics_reschedule (EV_A); 1349 periodics_reschedule (EV_A);
1350# endif
1046 /* no timer adjustment, as the monotonic clock doesn't jump */ 1351 /* no timer adjustment, as the monotonic clock doesn't jump */
1047 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1048 } 1353 }
1049 } 1354 }
1050 else 1355 else
1051#endif 1356#endif
1052 { 1357 {
1053 rt_now = ev_time (); 1358 ev_rt_now = ev_time ();
1054 1359
1055 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1360 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1056 { 1361 {
1362#if EV_PERIODIC_ENABLE
1057 periodics_reschedule (EV_A); 1363 periodics_reschedule (EV_A);
1364#endif
1058 1365
1059 /* adjust timers. this is easy, as the offset is the same for all */ 1366 /* adjust timers. this is easy, as the offset is the same for all of them */
1060 for (i = 0; i < timercnt; ++i) 1367 for (i = 0; i < timercnt; ++i)
1061 ((WT)timers [i])->at += rt_now - mn_now; 1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
1062 } 1369 }
1063 1370
1064 mn_now = rt_now; 1371 mn_now = ev_rt_now;
1065 } 1372 }
1066} 1373}
1067 1374
1068void 1375void
1069ev_ref (EV_P) 1376ev_ref (EV_P)
… …
1080static int loop_done; 1387static int loop_done;
1081 1388
1082void 1389void
1083ev_loop (EV_P_ int flags) 1390ev_loop (EV_P_ int flags)
1084{ 1391{
1085 double block;
1086 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1392 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1393 ? EVUNLOOP_ONE
1394 : EVUNLOOP_CANCEL;
1395
1396 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1087 1397
1088 do 1398 do
1089 { 1399 {
1400#ifndef _WIN32
1401 if (expect_false (curpid)) /* penalise the forking check even more */
1402 if (expect_false (getpid () != curpid))
1403 {
1404 curpid = getpid ();
1405 postfork = 1;
1406 }
1407#endif
1408
1409#if EV_FORK_ENABLE
1410 /* we might have forked, so queue fork handlers */
1411 if (expect_false (postfork))
1412 if (forkcnt)
1413 {
1414 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1415 call_pending (EV_A);
1416 }
1417#endif
1418
1090 /* queue check watchers (and execute them) */ 1419 /* queue prepare watchers (and execute them) */
1091 if (expect_false (preparecnt)) 1420 if (expect_false (preparecnt))
1092 { 1421 {
1093 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1094 call_pending (EV_A); 1423 call_pending (EV_A);
1095 } 1424 }
1096 1425
1426 if (expect_false (!activecnt))
1427 break;
1428
1097 /* we might have forked, so reify kernel state if necessary */ 1429 /* we might have forked, so reify kernel state if necessary */
1098 if (expect_false (postfork)) 1430 if (expect_false (postfork))
1099 loop_fork (EV_A); 1431 loop_fork (EV_A);
1100 1432
1101 /* update fd-related kernel structures */ 1433 /* update fd-related kernel structures */
1102 fd_reify (EV_A); 1434 fd_reify (EV_A);
1103 1435
1104 /* calculate blocking time */ 1436 /* calculate blocking time */
1437 {
1438 ev_tstamp block;
1105 1439
1106 /* we only need this for !monotonic clock or timers, but as we basically 1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1107 always have timers, we just calculate it always */ 1441 block = 0.; /* do not block at all */
1442 else
1443 {
1444 /* update time to cancel out callback processing overhead */
1108#if EV_USE_MONOTONIC 1445#if EV_USE_MONOTONIC
1109 if (expect_true (have_monotonic)) 1446 if (expect_true (have_monotonic))
1110 time_update_monotonic (EV_A); 1447 time_update_monotonic (EV_A);
1111 else 1448 else
1112#endif 1449#endif
1113 { 1450 {
1114 rt_now = ev_time (); 1451 ev_rt_now = ev_time ();
1115 mn_now = rt_now; 1452 mn_now = ev_rt_now;
1116 } 1453 }
1117 1454
1118 if (flags & EVLOOP_NONBLOCK || idlecnt)
1119 block = 0.;
1120 else
1121 {
1122 block = MAX_BLOCKTIME; 1455 block = MAX_BLOCKTIME;
1123 1456
1124 if (timercnt) 1457 if (timercnt)
1125 { 1458 {
1126 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1127 if (block > to) block = to; 1460 if (block > to) block = to;
1128 } 1461 }
1129 1462
1463#if EV_PERIODIC_ENABLE
1130 if (periodiccnt) 1464 if (periodiccnt)
1131 { 1465 {
1132 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1466 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1133 if (block > to) block = to; 1467 if (block > to) block = to;
1134 } 1468 }
1469#endif
1135 1470
1136 if (block < 0.) block = 0.; 1471 if (expect_false (block < 0.)) block = 0.;
1137 } 1472 }
1138 1473
1474 ++loop_count;
1139 method_poll (EV_A_ block); 1475 backend_poll (EV_A_ block);
1476 }
1140 1477
1141 /* update rt_now, do magic */ 1478 /* update ev_rt_now, do magic */
1142 time_update (EV_A); 1479 time_update (EV_A);
1143 1480
1144 /* queue pending timers and reschedule them */ 1481 /* queue pending timers and reschedule them */
1145 timers_reify (EV_A); /* relative timers called last */ 1482 timers_reify (EV_A); /* relative timers called last */
1483#if EV_PERIODIC_ENABLE
1146 periodics_reify (EV_A); /* absolute timers called first */ 1484 periodics_reify (EV_A); /* absolute timers called first */
1485#endif
1147 1486
1487#if EV_IDLE_ENABLE
1148 /* queue idle watchers unless io or timers are pending */ 1488 /* queue idle watchers unless other events are pending */
1149 if (idlecnt && !any_pending (EV_A)) 1489 idle_reify (EV_A);
1150 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1490#endif
1151 1491
1152 /* queue check watchers, to be executed first */ 1492 /* queue check watchers, to be executed first */
1153 if (checkcnt) 1493 if (expect_false (checkcnt))
1154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1155 1495
1156 call_pending (EV_A); 1496 call_pending (EV_A);
1497
1157 } 1498 }
1158 while (activecnt && !loop_done); 1499 while (expect_true (activecnt && !loop_done));
1159 1500
1160 if (loop_done != 2) 1501 if (loop_done == EVUNLOOP_ONE)
1161 loop_done = 0; 1502 loop_done = EVUNLOOP_CANCEL;
1162} 1503}
1163 1504
1164void 1505void
1165ev_unloop (EV_P_ int how) 1506ev_unloop (EV_P_ int how)
1166{ 1507{
1167 loop_done = how; 1508 loop_done = how;
1168} 1509}
1169 1510
1170/*****************************************************************************/ 1511/*****************************************************************************/
1171 1512
1172inline void 1513void inline_size
1173wlist_add (WL *head, WL elem) 1514wlist_add (WL *head, WL elem)
1174{ 1515{
1175 elem->next = *head; 1516 elem->next = *head;
1176 *head = elem; 1517 *head = elem;
1177} 1518}
1178 1519
1179inline void 1520void inline_size
1180wlist_del (WL *head, WL elem) 1521wlist_del (WL *head, WL elem)
1181{ 1522{
1182 while (*head) 1523 while (*head)
1183 { 1524 {
1184 if (*head == elem) 1525 if (*head == elem)
… …
1189 1530
1190 head = &(*head)->next; 1531 head = &(*head)->next;
1191 } 1532 }
1192} 1533}
1193 1534
1194inline void 1535void inline_speed
1195ev_clear_pending (EV_P_ W w) 1536clear_pending (EV_P_ W w)
1196{ 1537{
1197 if (w->pending) 1538 if (w->pending)
1198 { 1539 {
1199 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1540 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1200 w->pending = 0; 1541 w->pending = 0;
1201 } 1542 }
1202} 1543}
1203 1544
1204inline void 1545int
1546ev_clear_pending (EV_P_ void *w)
1547{
1548 W w_ = (W)w;
1549 int pending = w_->pending;
1550
1551 if (!pending)
1552 return 0;
1553
1554 w_->pending = 0;
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 p->w = 0;
1557
1558 return p->events;
1559}
1560
1561void inline_size
1562pri_adjust (EV_P_ W w)
1563{
1564 int pri = w->priority;
1565 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1566 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1567 w->priority = pri;
1568}
1569
1570void inline_speed
1205ev_start (EV_P_ W w, int active) 1571ev_start (EV_P_ W w, int active)
1206{ 1572{
1207 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1573 pri_adjust (EV_A_ w);
1208 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1209
1210 w->active = active; 1574 w->active = active;
1211 ev_ref (EV_A); 1575 ev_ref (EV_A);
1212} 1576}
1213 1577
1214inline void 1578void inline_size
1215ev_stop (EV_P_ W w) 1579ev_stop (EV_P_ W w)
1216{ 1580{
1217 ev_unref (EV_A); 1581 ev_unref (EV_A);
1218 w->active = 0; 1582 w->active = 0;
1219} 1583}
1220 1584
1221/*****************************************************************************/ 1585/*****************************************************************************/
1222 1586
1223void 1587void noinline
1224ev_io_start (EV_P_ struct ev_io *w) 1588ev_io_start (EV_P_ ev_io *w)
1225{ 1589{
1226 int fd = w->fd; 1590 int fd = w->fd;
1227 1591
1228 if (ev_is_active (w)) 1592 if (expect_false (ev_is_active (w)))
1229 return; 1593 return;
1230 1594
1231 assert (("ev_io_start called with negative fd", fd >= 0)); 1595 assert (("ev_io_start called with negative fd", fd >= 0));
1232 1596
1233 ev_start (EV_A_ (W)w, 1); 1597 ev_start (EV_A_ (W)w, 1);
… …
1235 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1599 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1236 1600
1237 fd_change (EV_A_ fd); 1601 fd_change (EV_A_ fd);
1238} 1602}
1239 1603
1240void 1604void noinline
1241ev_io_stop (EV_P_ struct ev_io *w) 1605ev_io_stop (EV_P_ ev_io *w)
1242{ 1606{
1243 ev_clear_pending (EV_A_ (W)w); 1607 clear_pending (EV_A_ (W)w);
1244 if (!ev_is_active (w)) 1608 if (expect_false (!ev_is_active (w)))
1245 return; 1609 return;
1610
1611 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1246 1612
1247 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1613 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1248 ev_stop (EV_A_ (W)w); 1614 ev_stop (EV_A_ (W)w);
1249 1615
1250 fd_change (EV_A_ w->fd); 1616 fd_change (EV_A_ w->fd);
1251} 1617}
1252 1618
1253void 1619void noinline
1254ev_timer_start (EV_P_ struct ev_timer *w) 1620ev_timer_start (EV_P_ ev_timer *w)
1255{ 1621{
1256 if (ev_is_active (w)) 1622 if (expect_false (ev_is_active (w)))
1257 return; 1623 return;
1258 1624
1259 ((WT)w)->at += mn_now; 1625 ((WT)w)->at += mn_now;
1260 1626
1261 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1627 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1262 1628
1263 ev_start (EV_A_ (W)w, ++timercnt); 1629 ev_start (EV_A_ (W)w, ++timercnt);
1264 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1630 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1265 timers [timercnt - 1] = w; 1631 timers [timercnt - 1] = w;
1266 upheap ((WT *)timers, timercnt - 1); 1632 upheap ((WT *)timers, timercnt - 1);
1267 1633
1634 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1635}
1636
1637void noinline
1638ev_timer_stop (EV_P_ ev_timer *w)
1639{
1640 clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w)))
1642 return;
1643
1268 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1269}
1270 1645
1271void 1646 {
1272ev_timer_stop (EV_P_ struct ev_timer *w) 1647 int active = ((W)w)->active;
1273{
1274 ev_clear_pending (EV_A_ (W)w);
1275 if (!ev_is_active (w))
1276 return;
1277 1648
1278 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1649 if (expect_true (--active < --timercnt))
1279
1280 if (((W)w)->active < timercnt--)
1281 { 1650 {
1282 timers [((W)w)->active - 1] = timers [timercnt]; 1651 timers [active] = timers [timercnt];
1283 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1652 adjustheap ((WT *)timers, timercnt, active);
1284 } 1653 }
1654 }
1285 1655
1286 ((WT)w)->at = w->repeat; 1656 ((WT)w)->at -= mn_now;
1287 1657
1288 ev_stop (EV_A_ (W)w); 1658 ev_stop (EV_A_ (W)w);
1289} 1659}
1290 1660
1291void 1661void noinline
1292ev_timer_again (EV_P_ struct ev_timer *w) 1662ev_timer_again (EV_P_ ev_timer *w)
1293{ 1663{
1294 if (ev_is_active (w)) 1664 if (ev_is_active (w))
1295 { 1665 {
1296 if (w->repeat) 1666 if (w->repeat)
1297 { 1667 {
1298 ((WT)w)->at = mn_now + w->repeat; 1668 ((WT)w)->at = mn_now + w->repeat;
1299 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1669 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1300 } 1670 }
1301 else 1671 else
1302 ev_timer_stop (EV_A_ w); 1672 ev_timer_stop (EV_A_ w);
1303 } 1673 }
1304 else if (w->repeat) 1674 else if (w->repeat)
1675 {
1676 w->at = w->repeat;
1305 ev_timer_start (EV_A_ w); 1677 ev_timer_start (EV_A_ w);
1678 }
1306} 1679}
1307 1680
1308void 1681#if EV_PERIODIC_ENABLE
1682void noinline
1309ev_periodic_start (EV_P_ struct ev_periodic *w) 1683ev_periodic_start (EV_P_ ev_periodic *w)
1310{ 1684{
1311 if (ev_is_active (w)) 1685 if (expect_false (ev_is_active (w)))
1312 return; 1686 return;
1313 1687
1688 if (w->reschedule_cb)
1689 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1690 else if (w->interval)
1691 {
1314 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1692 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1315
1316 /* this formula differs from the one in periodic_reify because we do not always round up */ 1693 /* this formula differs from the one in periodic_reify because we do not always round up */
1317 if (w->interval)
1318 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1694 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1695 }
1319 1696
1320 ev_start (EV_A_ (W)w, ++periodiccnt); 1697 ev_start (EV_A_ (W)w, ++periodiccnt);
1321 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1698 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1322 periodics [periodiccnt - 1] = w; 1699 periodics [periodiccnt - 1] = w;
1323 upheap ((WT *)periodics, periodiccnt - 1); 1700 upheap ((WT *)periodics, periodiccnt - 1);
1324 1701
1702 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1703}
1704
1705void noinline
1706ev_periodic_stop (EV_P_ ev_periodic *w)
1707{
1708 clear_pending (EV_A_ (W)w);
1709 if (expect_false (!ev_is_active (w)))
1710 return;
1711
1325 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1712 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1326}
1327 1713
1328void 1714 {
1329ev_periodic_stop (EV_P_ struct ev_periodic *w) 1715 int active = ((W)w)->active;
1330{
1331 ev_clear_pending (EV_A_ (W)w);
1332 if (!ev_is_active (w))
1333 return;
1334 1716
1335 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1717 if (expect_true (--active < --periodiccnt))
1336
1337 if (((W)w)->active < periodiccnt--)
1338 { 1718 {
1339 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1719 periodics [active] = periodics [periodiccnt];
1340 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1720 adjustheap ((WT *)periodics, periodiccnt, active);
1341 } 1721 }
1722 }
1342 1723
1343 ev_stop (EV_A_ (W)w); 1724 ev_stop (EV_A_ (W)w);
1344} 1725}
1345 1726
1346void 1727void noinline
1347ev_idle_start (EV_P_ struct ev_idle *w) 1728ev_periodic_again (EV_P_ ev_periodic *w)
1348{ 1729{
1349 if (ev_is_active (w)) 1730 /* TODO: use adjustheap and recalculation */
1350 return;
1351
1352 ev_start (EV_A_ (W)w, ++idlecnt);
1353 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1354 idles [idlecnt - 1] = w;
1355}
1356
1357void
1358ev_idle_stop (EV_P_ struct ev_idle *w)
1359{
1360 ev_clear_pending (EV_A_ (W)w);
1361 if (ev_is_active (w))
1362 return;
1363
1364 idles [((W)w)->active - 1] = idles [--idlecnt];
1365 ev_stop (EV_A_ (W)w); 1731 ev_periodic_stop (EV_A_ w);
1732 ev_periodic_start (EV_A_ w);
1366} 1733}
1367 1734#endif
1368void
1369ev_prepare_start (EV_P_ struct ev_prepare *w)
1370{
1371 if (ev_is_active (w))
1372 return;
1373
1374 ev_start (EV_A_ (W)w, ++preparecnt);
1375 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1376 prepares [preparecnt - 1] = w;
1377}
1378
1379void
1380ev_prepare_stop (EV_P_ struct ev_prepare *w)
1381{
1382 ev_clear_pending (EV_A_ (W)w);
1383 if (ev_is_active (w))
1384 return;
1385
1386 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1387 ev_stop (EV_A_ (W)w);
1388}
1389
1390void
1391ev_check_start (EV_P_ struct ev_check *w)
1392{
1393 if (ev_is_active (w))
1394 return;
1395
1396 ev_start (EV_A_ (W)w, ++checkcnt);
1397 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1398 checks [checkcnt - 1] = w;
1399}
1400
1401void
1402ev_check_stop (EV_P_ struct ev_check *w)
1403{
1404 ev_clear_pending (EV_A_ (W)w);
1405 if (ev_is_active (w))
1406 return;
1407
1408 checks [((W)w)->active - 1] = checks [--checkcnt];
1409 ev_stop (EV_A_ (W)w);
1410}
1411 1735
1412#ifndef SA_RESTART 1736#ifndef SA_RESTART
1413# define SA_RESTART 0 1737# define SA_RESTART 0
1414#endif 1738#endif
1415 1739
1416void 1740void noinline
1417ev_signal_start (EV_P_ struct ev_signal *w) 1741ev_signal_start (EV_P_ ev_signal *w)
1418{ 1742{
1419#if EV_MULTIPLICITY 1743#if EV_MULTIPLICITY
1420 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1744 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1421#endif 1745#endif
1422 if (ev_is_active (w)) 1746 if (expect_false (ev_is_active (w)))
1423 return; 1747 return;
1424 1748
1425 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1749 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1426 1750
1427 ev_start (EV_A_ (W)w, 1); 1751 ev_start (EV_A_ (W)w, 1);
1428 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1752 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1429 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1753 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1430 1754
1431 if (!((WL)w)->next) 1755 if (!((WL)w)->next)
1432 { 1756 {
1433#if WIN32 1757#if _WIN32
1434 signal (w->signum, sighandler); 1758 signal (w->signum, sighandler);
1435#else 1759#else
1436 struct sigaction sa; 1760 struct sigaction sa;
1437 sa.sa_handler = sighandler; 1761 sa.sa_handler = sighandler;
1438 sigfillset (&sa.sa_mask); 1762 sigfillset (&sa.sa_mask);
… …
1440 sigaction (w->signum, &sa, 0); 1764 sigaction (w->signum, &sa, 0);
1441#endif 1765#endif
1442 } 1766 }
1443} 1767}
1444 1768
1445void 1769void noinline
1446ev_signal_stop (EV_P_ struct ev_signal *w) 1770ev_signal_stop (EV_P_ ev_signal *w)
1447{ 1771{
1448 ev_clear_pending (EV_A_ (W)w); 1772 clear_pending (EV_A_ (W)w);
1449 if (!ev_is_active (w)) 1773 if (expect_false (!ev_is_active (w)))
1450 return; 1774 return;
1451 1775
1452 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1776 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1453 ev_stop (EV_A_ (W)w); 1777 ev_stop (EV_A_ (W)w);
1454 1778
1455 if (!signals [w->signum - 1].head) 1779 if (!signals [w->signum - 1].head)
1456 signal (w->signum, SIG_DFL); 1780 signal (w->signum, SIG_DFL);
1457} 1781}
1458 1782
1459void 1783void
1460ev_child_start (EV_P_ struct ev_child *w) 1784ev_child_start (EV_P_ ev_child *w)
1461{ 1785{
1462#if EV_MULTIPLICITY 1786#if EV_MULTIPLICITY
1463 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1787 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1464#endif 1788#endif
1465 if (ev_is_active (w)) 1789 if (expect_false (ev_is_active (w)))
1466 return; 1790 return;
1467 1791
1468 ev_start (EV_A_ (W)w, 1); 1792 ev_start (EV_A_ (W)w, 1);
1469 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1793 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1470} 1794}
1471 1795
1472void 1796void
1473ev_child_stop (EV_P_ struct ev_child *w) 1797ev_child_stop (EV_P_ ev_child *w)
1474{ 1798{
1475 ev_clear_pending (EV_A_ (W)w); 1799 clear_pending (EV_A_ (W)w);
1476 if (ev_is_active (w)) 1800 if (expect_false (!ev_is_active (w)))
1477 return; 1801 return;
1478 1802
1479 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1803 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1480 ev_stop (EV_A_ (W)w); 1804 ev_stop (EV_A_ (W)w);
1481} 1805}
1482 1806
1807#if EV_STAT_ENABLE
1808
1809# ifdef _WIN32
1810# undef lstat
1811# define lstat(a,b) _stati64 (a,b)
1812# endif
1813
1814#define DEF_STAT_INTERVAL 5.0074891
1815#define MIN_STAT_INTERVAL 0.1074891
1816
1817static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1818
1819#if EV_USE_INOTIFY
1820# define EV_INOTIFY_BUFSIZE 8192
1821
1822static void noinline
1823infy_add (EV_P_ ev_stat *w)
1824{
1825 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);
1826
1827 if (w->wd < 0)
1828 {
1829 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1830
1831 /* monitor some parent directory for speedup hints */
1832 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1833 {
1834 char path [4096];
1835 strcpy (path, w->path);
1836
1837 do
1838 {
1839 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1840 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1841
1842 char *pend = strrchr (path, '/');
1843
1844 if (!pend)
1845 break; /* whoops, no '/', complain to your admin */
1846
1847 *pend = 0;
1848 w->wd = inotify_add_watch (fs_fd, path, mask);
1849 }
1850 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1851 }
1852 }
1853 else
1854 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1855
1856 if (w->wd >= 0)
1857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1858}
1859
1860static void noinline
1861infy_del (EV_P_ ev_stat *w)
1862{
1863 int slot;
1864 int wd = w->wd;
1865
1866 if (wd < 0)
1867 return;
1868
1869 w->wd = -2;
1870 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1871 wlist_del (&fs_hash [slot].head, (WL)w);
1872
1873 /* remove this watcher, if others are watching it, they will rearm */
1874 inotify_rm_watch (fs_fd, wd);
1875}
1876
1877static void noinline
1878infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1879{
1880 if (slot < 0)
1881 /* overflow, need to check for all hahs slots */
1882 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1883 infy_wd (EV_A_ slot, wd, ev);
1884 else
1885 {
1886 WL w_;
1887
1888 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1889 {
1890 ev_stat *w = (ev_stat *)w_;
1891 w_ = w_->next; /* lets us remove this watcher and all before it */
1892
1893 if (w->wd == wd || wd == -1)
1894 {
1895 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1896 {
1897 w->wd = -1;
1898 infy_add (EV_A_ w); /* re-add, no matter what */
1899 }
1900
1901 stat_timer_cb (EV_A_ &w->timer, 0);
1902 }
1903 }
1904 }
1905}
1906
1907static void
1908infy_cb (EV_P_ ev_io *w, int revents)
1909{
1910 char buf [EV_INOTIFY_BUFSIZE];
1911 struct inotify_event *ev = (struct inotify_event *)buf;
1912 int ofs;
1913 int len = read (fs_fd, buf, sizeof (buf));
1914
1915 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1916 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1917}
1918
1919void inline_size
1920infy_init (EV_P)
1921{
1922 if (fs_fd != -2)
1923 return;
1924
1925 fs_fd = inotify_init ();
1926
1927 if (fs_fd >= 0)
1928 {
1929 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1930 ev_set_priority (&fs_w, EV_MAXPRI);
1931 ev_io_start (EV_A_ &fs_w);
1932 }
1933}
1934
1935void inline_size
1936infy_fork (EV_P)
1937{
1938 int slot;
1939
1940 if (fs_fd < 0)
1941 return;
1942
1943 close (fs_fd);
1944 fs_fd = inotify_init ();
1945
1946 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1947 {
1948 WL w_ = fs_hash [slot].head;
1949 fs_hash [slot].head = 0;
1950
1951 while (w_)
1952 {
1953 ev_stat *w = (ev_stat *)w_;
1954 w_ = w_->next; /* lets us add this watcher */
1955
1956 w->wd = -1;
1957
1958 if (fs_fd >= 0)
1959 infy_add (EV_A_ w); /* re-add, no matter what */
1960 else
1961 ev_timer_start (EV_A_ &w->timer);
1962 }
1963
1964 }
1965}
1966
1967#endif
1968
1969void
1970ev_stat_stat (EV_P_ ev_stat *w)
1971{
1972 if (lstat (w->path, &w->attr) < 0)
1973 w->attr.st_nlink = 0;
1974 else if (!w->attr.st_nlink)
1975 w->attr.st_nlink = 1;
1976}
1977
1978static void noinline
1979stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1980{
1981 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1982
1983 /* we copy this here each the time so that */
1984 /* prev has the old value when the callback gets invoked */
1985 w->prev = w->attr;
1986 ev_stat_stat (EV_A_ w);
1987
1988 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1989 if (
1990 w->prev.st_dev != w->attr.st_dev
1991 || w->prev.st_ino != w->attr.st_ino
1992 || w->prev.st_mode != w->attr.st_mode
1993 || w->prev.st_nlink != w->attr.st_nlink
1994 || w->prev.st_uid != w->attr.st_uid
1995 || w->prev.st_gid != w->attr.st_gid
1996 || w->prev.st_rdev != w->attr.st_rdev
1997 || w->prev.st_size != w->attr.st_size
1998 || w->prev.st_atime != w->attr.st_atime
1999 || w->prev.st_mtime != w->attr.st_mtime
2000 || w->prev.st_ctime != w->attr.st_ctime
2001 ) {
2002 #if EV_USE_INOTIFY
2003 infy_del (EV_A_ w);
2004 infy_add (EV_A_ w);
2005 ev_stat_stat (EV_A_ w); /* avoid race... */
2006 #endif
2007
2008 ev_feed_event (EV_A_ w, EV_STAT);
2009 }
2010}
2011
2012void
2013ev_stat_start (EV_P_ ev_stat *w)
2014{
2015 if (expect_false (ev_is_active (w)))
2016 return;
2017
2018 /* since we use memcmp, we need to clear any padding data etc. */
2019 memset (&w->prev, 0, sizeof (ev_statdata));
2020 memset (&w->attr, 0, sizeof (ev_statdata));
2021
2022 ev_stat_stat (EV_A_ w);
2023
2024 if (w->interval < MIN_STAT_INTERVAL)
2025 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2026
2027 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2028 ev_set_priority (&w->timer, ev_priority (w));
2029
2030#if EV_USE_INOTIFY
2031 infy_init (EV_A);
2032
2033 if (fs_fd >= 0)
2034 infy_add (EV_A_ w);
2035 else
2036#endif
2037 ev_timer_start (EV_A_ &w->timer);
2038
2039 ev_start (EV_A_ (W)w, 1);
2040}
2041
2042void
2043ev_stat_stop (EV_P_ ev_stat *w)
2044{
2045 clear_pending (EV_A_ (W)w);
2046 if (expect_false (!ev_is_active (w)))
2047 return;
2048
2049#if EV_USE_INOTIFY
2050 infy_del (EV_A_ w);
2051#endif
2052 ev_timer_stop (EV_A_ &w->timer);
2053
2054 ev_stop (EV_A_ (W)w);
2055}
2056#endif
2057
2058#if EV_IDLE_ENABLE
2059void
2060ev_idle_start (EV_P_ ev_idle *w)
2061{
2062 if (expect_false (ev_is_active (w)))
2063 return;
2064
2065 pri_adjust (EV_A_ (W)w);
2066
2067 {
2068 int active = ++idlecnt [ABSPRI (w)];
2069
2070 ++idleall;
2071 ev_start (EV_A_ (W)w, active);
2072
2073 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2074 idles [ABSPRI (w)][active - 1] = w;
2075 }
2076}
2077
2078void
2079ev_idle_stop (EV_P_ ev_idle *w)
2080{
2081 clear_pending (EV_A_ (W)w);
2082 if (expect_false (!ev_is_active (w)))
2083 return;
2084
2085 {
2086 int active = ((W)w)->active;
2087
2088 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2089 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2090
2091 ev_stop (EV_A_ (W)w);
2092 --idleall;
2093 }
2094}
2095#endif
2096
2097void
2098ev_prepare_start (EV_P_ ev_prepare *w)
2099{
2100 if (expect_false (ev_is_active (w)))
2101 return;
2102
2103 ev_start (EV_A_ (W)w, ++preparecnt);
2104 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2105 prepares [preparecnt - 1] = w;
2106}
2107
2108void
2109ev_prepare_stop (EV_P_ ev_prepare *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 prepares [active - 1] = prepares [--preparecnt];
2118 ((W)prepares [active - 1])->active = active;
2119 }
2120
2121 ev_stop (EV_A_ (W)w);
2122}
2123
2124void
2125ev_check_start (EV_P_ ev_check *w)
2126{
2127 if (expect_false (ev_is_active (w)))
2128 return;
2129
2130 ev_start (EV_A_ (W)w, ++checkcnt);
2131 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2132 checks [checkcnt - 1] = w;
2133}
2134
2135void
2136ev_check_stop (EV_P_ ev_check *w)
2137{
2138 clear_pending (EV_A_ (W)w);
2139 if (expect_false (!ev_is_active (w)))
2140 return;
2141
2142 {
2143 int active = ((W)w)->active;
2144 checks [active - 1] = checks [--checkcnt];
2145 ((W)checks [active - 1])->active = active;
2146 }
2147
2148 ev_stop (EV_A_ (W)w);
2149}
2150
2151#if EV_EMBED_ENABLE
2152void noinline
2153ev_embed_sweep (EV_P_ ev_embed *w)
2154{
2155 ev_loop (w->loop, EVLOOP_NONBLOCK);
2156}
2157
2158static void
2159embed_cb (EV_P_ ev_io *io, int revents)
2160{
2161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2162
2163 if (ev_cb (w))
2164 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2165 else
2166 ev_embed_sweep (loop, w);
2167}
2168
2169void
2170ev_embed_start (EV_P_ ev_embed *w)
2171{
2172 if (expect_false (ev_is_active (w)))
2173 return;
2174
2175 {
2176 struct ev_loop *loop = w->loop;
2177 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2178 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2179 }
2180
2181 ev_set_priority (&w->io, ev_priority (w));
2182 ev_io_start (EV_A_ &w->io);
2183
2184 ev_start (EV_A_ (W)w, 1);
2185}
2186
2187void
2188ev_embed_stop (EV_P_ ev_embed *w)
2189{
2190 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w)))
2192 return;
2193
2194 ev_io_stop (EV_A_ &w->io);
2195
2196 ev_stop (EV_A_ (W)w);
2197}
2198#endif
2199
2200#if EV_FORK_ENABLE
2201void
2202ev_fork_start (EV_P_ ev_fork *w)
2203{
2204 if (expect_false (ev_is_active (w)))
2205 return;
2206
2207 ev_start (EV_A_ (W)w, ++forkcnt);
2208 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2209 forks [forkcnt - 1] = w;
2210}
2211
2212void
2213ev_fork_stop (EV_P_ ev_fork *w)
2214{
2215 clear_pending (EV_A_ (W)w);
2216 if (expect_false (!ev_is_active (w)))
2217 return;
2218
2219 {
2220 int active = ((W)w)->active;
2221 forks [active - 1] = forks [--forkcnt];
2222 ((W)forks [active - 1])->active = active;
2223 }
2224
2225 ev_stop (EV_A_ (W)w);
2226}
2227#endif
2228
1483/*****************************************************************************/ 2229/*****************************************************************************/
1484 2230
1485struct ev_once 2231struct ev_once
1486{ 2232{
1487 struct ev_io io; 2233 ev_io io;
1488 struct ev_timer to; 2234 ev_timer to;
1489 void (*cb)(int revents, void *arg); 2235 void (*cb)(int revents, void *arg);
1490 void *arg; 2236 void *arg;
1491}; 2237};
1492 2238
1493static void 2239static void
… …
1502 2248
1503 cb (revents, arg); 2249 cb (revents, arg);
1504} 2250}
1505 2251
1506static void 2252static void
1507once_cb_io (EV_P_ struct ev_io *w, int revents) 2253once_cb_io (EV_P_ ev_io *w, int revents)
1508{ 2254{
1509 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2255 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1510} 2256}
1511 2257
1512static void 2258static void
1513once_cb_to (EV_P_ struct ev_timer *w, int revents) 2259once_cb_to (EV_P_ ev_timer *w, int revents)
1514{ 2260{
1515 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1516} 2262}
1517 2263
1518void 2264void
1519ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2265ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1520{ 2266{
1521 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2267 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1522 2268
1523 if (!once) 2269 if (expect_false (!once))
2270 {
1524 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2271 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1525 else 2272 return;
1526 { 2273 }
2274
1527 once->cb = cb; 2275 once->cb = cb;
1528 once->arg = arg; 2276 once->arg = arg;
1529 2277
1530 ev_watcher_init (&once->io, once_cb_io); 2278 ev_init (&once->io, once_cb_io);
1531 if (fd >= 0) 2279 if (fd >= 0)
1532 { 2280 {
1533 ev_io_set (&once->io, fd, events); 2281 ev_io_set (&once->io, fd, events);
1534 ev_io_start (EV_A_ &once->io); 2282 ev_io_start (EV_A_ &once->io);
1535 } 2283 }
1536 2284
1537 ev_watcher_init (&once->to, once_cb_to); 2285 ev_init (&once->to, once_cb_to);
1538 if (timeout >= 0.) 2286 if (timeout >= 0.)
1539 { 2287 {
1540 ev_timer_set (&once->to, timeout, 0.); 2288 ev_timer_set (&once->to, timeout, 0.);
1541 ev_timer_start (EV_A_ &once->to); 2289 ev_timer_start (EV_A_ &once->to);
1542 }
1543 } 2290 }
1544} 2291}
1545 2292
2293#ifdef __cplusplus
2294}
2295#endif
2296

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