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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 1.175 by root, Tue Dec 11 04:08:54 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
123#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) */
124#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) */
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 */ 223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127
128#include "ev.h"
129 224
130#if __GNUC__ >= 3 225#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 227# define noinline __attribute__ ((noinline))
133#else 228#else
134# define expect(expr,value) (expr) 229# define expect(expr,value) (expr)
135# define inline static 230# define noinline
231# if __STDC_VERSION__ < 199901L
232# define inline
233# endif
136#endif 234#endif
137 235
138#define expect_false(expr) expect ((expr) != 0, 0) 236#define expect_false(expr) expect ((expr) != 0, 0)
139#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
140 245
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 248
249#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */
251
144typedef struct ev_watcher *W; 252typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 253typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 254typedef ev_watcher_time *WT;
147 255
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 257
150#if WIN32 258#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 259# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 260#endif
155 261
156/*****************************************************************************/ 262/*****************************************************************************/
157 263
158static void (*syserr_cb)(void); 264static void (*syserr_cb)(const char *msg);
159 265
160void ev_set_syserr_cb (void (*cb)(void)) 266void
267ev_set_syserr_cb (void (*cb)(const char *msg))
161{ 268{
162 syserr_cb = cb; 269 syserr_cb = cb;
163} 270}
164 271
165static void 272static void noinline
166syserr (void) 273syserr (const char *msg)
167{ 274{
275 if (!msg)
276 msg = "(libev) system error";
277
168 if (syserr_cb) 278 if (syserr_cb)
169 syserr_cb (); 279 syserr_cb (msg);
170 else 280 else
171 { 281 {
172 perror ("libev"); 282 perror (msg);
173 abort (); 283 abort ();
174 } 284 }
175} 285}
176 286
177static void *(*alloc)(void *ptr, long size); 287static void *(*alloc)(void *ptr, long size);
178 288
289void
179void ev_set_allocator (void *(*cb)(void *ptr, long size)) 290ev_set_allocator (void *(*cb)(void *ptr, long size))
180{ 291{
181 alloc = cb; 292 alloc = cb;
182} 293}
183 294
184static void * 295inline_speed void *
185ev_realloc (void *ptr, long size) 296ev_realloc (void *ptr, long size)
186{ 297{
187 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
188 299
189 if (!ptr && size) 300 if (!ptr && size)
… …
203typedef struct 314typedef struct
204{ 315{
205 WL head; 316 WL head;
206 unsigned char events; 317 unsigned char events;
207 unsigned char reify; 318 unsigned char reify;
319#if EV_SELECT_IS_WINSOCKET
320 SOCKET handle;
321#endif
208} ANFD; 322} ANFD;
209 323
210typedef struct 324typedef struct
211{ 325{
212 W w; 326 W w;
213 int events; 327 int events;
214} ANPENDING; 328} ANPENDING;
215 329
330#if EV_USE_INOTIFY
331typedef struct
332{
333 WL head;
334} ANFS;
335#endif
336
216#if EV_MULTIPLICITY 337#if EV_MULTIPLICITY
217 338
218struct ev_loop 339 struct ev_loop
219{ 340 {
341 ev_tstamp ev_rt_now;
342 #define ev_rt_now ((loop)->ev_rt_now)
220# define VAR(name,decl) decl; 343 #define VAR(name,decl) decl;
221# include "ev_vars.h" 344 #include "ev_vars.h"
222};
223# undef VAR 345 #undef VAR
346 };
224# 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;
225 351
226#else 352#else
227 353
354 ev_tstamp ev_rt_now;
228# define VAR(name,decl) static decl; 355 #define VAR(name,decl) static decl;
229# include "ev_vars.h" 356 #include "ev_vars.h"
230# undef VAR 357 #undef VAR
358
359 static int ev_default_loop_ptr;
231 360
232#endif 361#endif
233 362
234/*****************************************************************************/ 363/*****************************************************************************/
235 364
236inline ev_tstamp 365ev_tstamp
237ev_time (void) 366ev_time (void)
238{ 367{
239#if EV_USE_REALTIME 368#if EV_USE_REALTIME
240 struct timespec ts; 369 struct timespec ts;
241 clock_gettime (CLOCK_REALTIME, &ts); 370 clock_gettime (CLOCK_REALTIME, &ts);
… …
245 gettimeofday (&tv, 0); 374 gettimeofday (&tv, 0);
246 return tv.tv_sec + tv.tv_usec * 1e-6; 375 return tv.tv_sec + tv.tv_usec * 1e-6;
247#endif 376#endif
248} 377}
249 378
250inline ev_tstamp 379ev_tstamp inline_size
251get_clock (void) 380get_clock (void)
252{ 381{
253#if EV_USE_MONOTONIC 382#if EV_USE_MONOTONIC
254 if (expect_true (have_monotonic)) 383 if (expect_true (have_monotonic))
255 { 384 {
… …
260#endif 389#endif
261 390
262 return ev_time (); 391 return ev_time ();
263} 392}
264 393
394#if EV_MULTIPLICITY
265ev_tstamp 395ev_tstamp
266ev_now (EV_P) 396ev_now (EV_P)
267{ 397{
268 return rt_now; 398 return ev_rt_now;
269} 399}
400#endif
270 401
271#define array_roundsize(base,n) ((n) | 4 & ~3) 402int inline_size
403array_nextsize (int elem, int cur, int cnt)
404{
405 int ncur = cur + 1;
272 406
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}
429
273#define array_needsize(base,cur,cnt,init) \ 430#define array_needsize(type,base,cur,cnt,init) \
274 if (expect_false ((cnt) > cur)) \ 431 if (expect_false ((cnt) > (cur))) \
275 { \ 432 { \
276 int newcnt = cur; \ 433 int ocur_ = (cur); \
277 do \ 434 (base) = (type *)array_realloc \
278 { \ 435 (sizeof (type), (base), &(cur), (cnt)); \
279 newcnt = array_roundsize (base, newcnt << 1); \ 436 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 } 437 }
287 438
439#if 0
288#define array_slim(stem) \ 440#define array_slim(type,stem) \
289 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 441 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290 { \ 442 { \
291 stem ## max = array_roundsize (stem ## cnt >> 1); \ 443 stem ## max = array_roundsize (stem ## cnt >> 1); \
292 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 444 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
293 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294 } 446 }
447#endif
295 448
296#define array_free(stem, idx) \ 449#define array_free(stem, idx) \
297 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;
298 451
299/*****************************************************************************/ 452/*****************************************************************************/
300 453
301static 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
302anfds_init (ANFD *base, int count) 483anfds_init (ANFD *base, int count)
303{ 484{
304 while (count--) 485 while (count--)
305 { 486 {
306 base->head = 0; 487 base->head = 0;
… …
309 490
310 ++base; 491 ++base;
311 } 492 }
312} 493}
313 494
314static void 495void 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) 496fd_event (EV_P_ int fd, int revents)
340{ 497{
341 ANFD *anfd = anfds + fd; 498 ANFD *anfd = anfds + fd;
342 struct ev_io *w; 499 ev_io *w;
343 500
344 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)
345 { 502 {
346 int ev = w->events & events; 503 int ev = w->events & revents;
347 504
348 if (ev) 505 if (ev)
349 event (EV_A_ (W)w, ev); 506 ev_feed_event (EV_A_ (W)w, ev);
350 } 507 }
351} 508}
352 509
353/*****************************************************************************/ 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}
354 516
355static void 517void inline_size
356fd_reify (EV_P) 518fd_reify (EV_P)
357{ 519{
358 int i; 520 int i;
359 521
360 for (i = 0; i < fdchangecnt; ++i) 522 for (i = 0; i < fdchangecnt; ++i)
361 { 523 {
362 int fd = fdchanges [i]; 524 int fd = fdchanges [i];
363 ANFD *anfd = anfds + fd; 525 ANFD *anfd = anfds + fd;
364 struct ev_io *w; 526 ev_io *w;
365 527
366 int events = 0; 528 int events = 0;
367 529
368 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)
369 events |= w->events; 531 events |= w->events;
370 532
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
371 anfd->reify = 0; 542 anfd->reify = 0;
372 543
373 method_modify (EV_A_ fd, anfd->events, events); 544 backend_modify (EV_A_ fd, anfd->events, events);
374 anfd->events = events; 545 anfd->events = events;
375 } 546 }
376 547
377 fdchangecnt = 0; 548 fdchangecnt = 0;
378} 549}
379 550
380static void 551void inline_size
381fd_change (EV_P_ int fd) 552fd_change (EV_P_ int fd)
382{ 553{
383 if (anfds [fd].reify || fdchangecnt < 0) 554 if (expect_false (anfds [fd].reify))
384 return; 555 return;
385 556
386 anfds [fd].reify = 1; 557 anfds [fd].reify = 1;
387 558
388 ++fdchangecnt; 559 ++fdchangecnt;
389 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390 fdchanges [fdchangecnt - 1] = fd; 561 fdchanges [fdchangecnt - 1] = fd;
391} 562}
392 563
393static void 564void inline_speed
394fd_kill (EV_P_ int fd) 565fd_kill (EV_P_ int fd)
395{ 566{
396 struct ev_io *w; 567 ev_io *w;
397 568
398 while ((w = (struct ev_io *)anfds [fd].head)) 569 while ((w = (ev_io *)anfds [fd].head))
399 { 570 {
400 ev_io_stop (EV_A_ w); 571 ev_io_stop (EV_A_ w);
401 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);
402 } 573 }
574}
575
576int inline_size
577fd_valid (int fd)
578{
579#ifdef _WIN32
580 return _get_osfhandle (fd) != -1;
581#else
582 return fcntl (fd, F_GETFD) != -1;
583#endif
403} 584}
404 585
405/* called on EBADF to verify fds */ 586/* called on EBADF to verify fds */
406static void 587static void noinline
407fd_ebadf (EV_P) 588fd_ebadf (EV_P)
408{ 589{
409 int fd; 590 int fd;
410 591
411 for (fd = 0; fd < anfdmax; ++fd) 592 for (fd = 0; fd < anfdmax; ++fd)
412 if (anfds [fd].events) 593 if (anfds [fd].events)
413 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 594 if (!fd_valid (fd) == -1 && errno == EBADF)
414 fd_kill (EV_A_ fd); 595 fd_kill (EV_A_ fd);
415} 596}
416 597
417/* 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 */
418static void 599static void noinline
419fd_enomem (EV_P) 600fd_enomem (EV_P)
420{ 601{
421 int fd; 602 int fd;
422 603
423 for (fd = anfdmax; fd--; ) 604 for (fd = anfdmax; fd--; )
… …
426 fd_kill (EV_A_ fd); 607 fd_kill (EV_A_ fd);
427 return; 608 return;
428 } 609 }
429} 610}
430 611
431/* susually 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 */
432static void 613static void noinline
433fd_rearm_all (EV_P) 614fd_rearm_all (EV_P)
434{ 615{
435 int fd; 616 int fd;
436 617
437 /* this should be highly optimised to not do anything but set a flag */
438 for (fd = 0; fd < anfdmax; ++fd) 618 for (fd = 0; fd < anfdmax; ++fd)
439 if (anfds [fd].events) 619 if (anfds [fd].events)
440 { 620 {
441 anfds [fd].events = 0; 621 anfds [fd].events = 0;
442 fd_change (EV_A_ fd); 622 fd_change (EV_A_ fd);
443 } 623 }
444} 624}
445 625
446/*****************************************************************************/ 626/*****************************************************************************/
447 627
448static void 628void inline_speed
449upheap (WT *heap, int k) 629upheap (WT *heap, int k)
450{ 630{
451 WT w = heap [k]; 631 WT w = heap [k];
452 632
453 while (k && heap [k >> 1]->at > w->at) 633 while (k && heap [k >> 1]->at > w->at)
… …
460 heap [k] = w; 640 heap [k] = w;
461 ((W)heap [k])->active = k + 1; 641 ((W)heap [k])->active = k + 1;
462 642
463} 643}
464 644
465static void 645void inline_speed
466downheap (WT *heap, int N, int k) 646downheap (WT *heap, int N, int k)
467{ 647{
468 WT w = heap [k]; 648 WT w = heap [k];
469 649
470 while (k < (N >> 1)) 650 while (k < (N >> 1))
… …
484 664
485 heap [k] = w; 665 heap [k] = w;
486 ((W)heap [k])->active = k + 1; 666 ((W)heap [k])->active = k + 1;
487} 667}
488 668
669void inline_size
670adjustheap (WT *heap, int N, int k)
671{
672 upheap (heap, k);
673 downheap (heap, N, k);
674}
675
489/*****************************************************************************/ 676/*****************************************************************************/
490 677
491typedef struct 678typedef struct
492{ 679{
493 WL head; 680 WL head;
… …
497static ANSIG *signals; 684static ANSIG *signals;
498static int signalmax; 685static int signalmax;
499 686
500static int sigpipe [2]; 687static int sigpipe [2];
501static sig_atomic_t volatile gotsig; 688static sig_atomic_t volatile gotsig;
502static struct ev_io sigev; 689static ev_io sigev;
503 690
504static void 691void inline_size
505signals_init (ANSIG *base, int count) 692signals_init (ANSIG *base, int count)
506{ 693{
507 while (count--) 694 while (count--)
508 { 695 {
509 base->head = 0; 696 base->head = 0;
… …
514} 701}
515 702
516static void 703static void
517sighandler (int signum) 704sighandler (int signum)
518{ 705{
519#if WIN32 706#if _WIN32
520 signal (signum, sighandler); 707 signal (signum, sighandler);
521#endif 708#endif
522 709
523 signals [signum - 1].gotsig = 1; 710 signals [signum - 1].gotsig = 1;
524 711
… …
529 write (sigpipe [1], &signum, 1); 716 write (sigpipe [1], &signum, 1);
530 errno = old_errno; 717 errno = old_errno;
531 } 718 }
532} 719}
533 720
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
534static void 741static void
535sigcb (EV_P_ struct ev_io *iow, int revents) 742sigcb (EV_P_ ev_io *iow, int revents)
536{ 743{
537 WL w;
538 int signum; 744 int signum;
539 745
540 read (sigpipe [0], &revents, 1); 746 read (sigpipe [0], &revents, 1);
541 gotsig = 0; 747 gotsig = 0;
542 748
543 for (signum = signalmax; signum--; ) 749 for (signum = signalmax; signum--; )
544 if (signals [signum].gotsig) 750 if (signals [signum].gotsig)
545 { 751 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} 752}
552 753
553static 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
554siginit (EV_P) 767siginit (EV_P)
555{ 768{
556#ifndef WIN32 769 fd_intern (sigpipe [0]);
557 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 770 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
564 771
565 ev_io_set (&sigev, sigpipe [0], EV_READ); 772 ev_io_set (&sigev, sigpipe [0], EV_READ);
566 ev_io_start (EV_A_ &sigev); 773 ev_io_start (EV_A_ &sigev);
567 ev_unref (EV_A); /* child watcher should not keep loop alive */ 774 ev_unref (EV_A); /* child watcher should not keep loop alive */
568} 775}
569 776
570/*****************************************************************************/ 777/*****************************************************************************/
571 778
779static ev_child *childs [EV_PID_HASHSIZE];
780
572#ifndef WIN32 781#ifndef _WIN32
573 782
574static struct ev_child *childs [PID_HASHSIZE];
575static 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}
576 799
577#ifndef WCONTINUED 800#ifndef WCONTINUED
578# define WCONTINUED 0 801# define WCONTINUED 0
579#endif 802#endif
580 803
581static void 804static 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) 805childcb (EV_P_ ev_signal *sw, int revents)
598{ 806{
599 int pid, status; 807 int pid, status;
600 808
809 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
601 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 810 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
602 { 811 if (!WCONTINUED
812 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return;
815
603 /* 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 */
604 event (EV_A_ (W)sw, EV_SIGNAL); 818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605 819
606 child_reap (EV_A_ sw, pid, pid, status); 820 child_reap (EV_A_ sw, pid, pid, status);
821 if (EV_PID_HASHSIZE > 1)
607 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 */
608 }
609} 823}
610 824
611#endif 825#endif
612 826
613/*****************************************************************************/ 827/*****************************************************************************/
614 828
829#if EV_USE_PORT
830# include "ev_port.c"
831#endif
615#if EV_USE_KQUEUE 832#if EV_USE_KQUEUE
616# include "ev_kqueue.c" 833# include "ev_kqueue.c"
617#endif 834#endif
618#if EV_USE_EPOLL 835#if EV_USE_EPOLL
619# include "ev_epoll.c" 836# include "ev_epoll.c"
… …
636{ 853{
637 return EV_VERSION_MINOR; 854 return EV_VERSION_MINOR;
638} 855}
639 856
640/* 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 */
641static int 858int inline_size
642enable_secure (void) 859enable_secure (void)
643{ 860{
644#ifdef WIN32 861#ifdef _WIN32
645 return 0; 862 return 0;
646#else 863#else
647 return getuid () != geteuid () 864 return getuid () != geteuid ()
648 || getgid () != getegid (); 865 || getgid () != getegid ();
649#endif 866#endif
650} 867}
651 868
652int 869unsigned int
653ev_method (EV_P) 870ev_supported_backends (void)
654{ 871{
655 return method; 872 unsigned int flags = 0;
656}
657 873
658static void 874 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
659loop_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)
660{ 885{
661 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)
662 { 925 {
663#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
664 { 927 {
665 struct timespec ts; 928 struct timespec ts;
666 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 929 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667 have_monotonic = 1; 930 have_monotonic = 1;
668 } 931 }
669#endif 932#endif
670 933
671 rt_now = ev_time (); 934 ev_rt_now = ev_time ();
672 mn_now = get_clock (); 935 mn_now = get_clock ();
673 now_floor = mn_now; 936 now_floor = mn_now;
674 rtmn_diff = rt_now - mn_now; 937 rtmn_diff = ev_rt_now - mn_now;
675 938
676 if (methods == EVMETHOD_AUTO) 939 /* pid check not overridable via env */
677 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"))
678 methods = atoi (getenv ("LIBEV_METHODS")); 948 flags = atoi (getenv ("LIBEV_FLAGS"));
679 else
680 methods = EVMETHOD_ANY;
681 949
682 method = 0; 950 if (!(flags & 0x0000ffffUL))
951 flags |= ev_recommended_backends ();
952
953 backend = 0;
954 backend_fd = -1;
683#if EV_USE_WIN32 955#if EV_USE_INOTIFY
684 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);
685#endif 961#endif
686#if EV_USE_KQUEUE 962#if EV_USE_KQUEUE
687 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
688#endif 964#endif
689#if EV_USE_EPOLL 965#if EV_USE_EPOLL
690 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
691#endif 967#endif
692#if EV_USE_POLL 968#if EV_USE_POLL
693 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
694#endif 970#endif
695#if EV_USE_SELECT 971#if EV_USE_SELECT
696 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
697#endif 973#endif
698 }
699}
700 974
701void 975 ev_init (&sigev, sigcb);
976 ev_set_priority (&sigev, EV_MAXPRI);
977 }
978}
979
980static void noinline
702loop_destroy (EV_P) 981loop_destroy (EV_P)
703{ 982{
704 int i; 983 int i;
705 984
706#if EV_USE_WIN32 985#if EV_USE_INOTIFY
707 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);
708#endif 995#endif
709#if EV_USE_KQUEUE 996#if EV_USE_KQUEUE
710 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
711#endif 998#endif
712#if EV_USE_EPOLL 999#if EV_USE_EPOLL
713 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1000 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
714#endif 1001#endif
715#if EV_USE_POLL 1002#if EV_USE_POLL
716 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1003 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
717#endif 1004#endif
718#if EV_USE_SELECT 1005#if EV_USE_SELECT
719 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1006 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
720#endif 1007#endif
721 1008
722 for (i = NUMPRI; i--; ) 1009 for (i = NUMPRI; i--; )
1010 {
723 array_free (pending, [i]); 1011 array_free (pending, [i]);
1012#if EV_IDLE_ENABLE
1013 array_free (idle, [i]);
1014#endif
1015 }
724 1016
1017 /* have to use the microsoft-never-gets-it-right macro */
725 array_free (fdchange, ); 1018 array_free (fdchange, EMPTY);
726 array_free (timer, ); 1019 array_free (timer, EMPTY);
1020#if EV_PERIODIC_ENABLE
727 array_free (periodic, ); 1021 array_free (periodic, EMPTY);
728 array_free (idle, ); 1022#endif
729 array_free (prepare, ); 1023 array_free (prepare, EMPTY);
730 array_free (check, ); 1024 array_free (check, EMPTY);
731 1025
732 method = 0; 1026 backend = 0;
733 /*TODO*/
734} 1027}
735 1028
736void 1029void inline_size infy_fork (EV_P);
1030
1031void inline_size
737loop_fork (EV_P) 1032loop_fork (EV_P)
738{ 1033{
739 /*TODO*/ 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
740#if EV_USE_EPOLL 1040#if EV_USE_EPOLL
741 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1041 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742#endif 1042#endif
743#if EV_USE_KQUEUE 1043#if EV_USE_INOTIFY
744 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1044 infy_fork (EV_A);
745#endif 1045#endif
1046
1047 if (ev_is_active (&sigev))
1048 {
1049 /* default loop */
1050
1051 ev_ref (EV_A);
1052 ev_io_stop (EV_A_ &sigev);
1053 close (sigpipe [0]);
1054 close (sigpipe [1]);
1055
1056 while (pipe (sigpipe))
1057 syserr ("(libev) error creating pipe");
1058
1059 siginit (EV_A);
1060 }
1061
1062 postfork = 0;
746} 1063}
747 1064
748#if EV_MULTIPLICITY 1065#if EV_MULTIPLICITY
749struct ev_loop * 1066struct ev_loop *
750ev_loop_new (int methods) 1067ev_loop_new (unsigned int flags)
751{ 1068{
752 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));
753 1070
754 memset (loop, 0, sizeof (struct ev_loop)); 1071 memset (loop, 0, sizeof (struct ev_loop));
755 1072
756 loop_init (EV_A_ methods); 1073 loop_init (EV_A_ flags);
757 1074
758 if (ev_method (EV_A)) 1075 if (ev_backend (EV_A))
759 return loop; 1076 return loop;
760 1077
761 return 0; 1078 return 0;
762} 1079}
763 1080
… …
769} 1086}
770 1087
771void 1088void
772ev_loop_fork (EV_P) 1089ev_loop_fork (EV_P)
773{ 1090{
774 loop_fork (EV_A); 1091 postfork = 1;
775} 1092}
776 1093
777#endif 1094#endif
778 1095
779#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
780struct ev_loop default_loop_struct;
781static struct ev_loop *default_loop;
782
783struct ev_loop * 1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
784#else 1099#else
785static int default_loop;
786
787int 1100int
1101ev_default_loop (unsigned int flags)
788#endif 1102#endif
789ev_default_loop (int methods)
790{ 1103{
791 if (sigpipe [0] == sigpipe [1]) 1104 if (sigpipe [0] == sigpipe [1])
792 if (pipe (sigpipe)) 1105 if (pipe (sigpipe))
793 return 0; 1106 return 0;
794 1107
795 if (!default_loop) 1108 if (!ev_default_loop_ptr)
796 { 1109 {
797#if EV_MULTIPLICITY 1110#if EV_MULTIPLICITY
798 struct ev_loop *loop = default_loop = &default_loop_struct; 1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799#else 1112#else
800 default_loop = 1; 1113 ev_default_loop_ptr = 1;
801#endif 1114#endif
802 1115
803 loop_init (EV_A_ methods); 1116 loop_init (EV_A_ flags);
804 1117
805 if (ev_method (EV_A)) 1118 if (ev_backend (EV_A))
806 { 1119 {
807 ev_watcher_init (&sigev, sigcb);
808 ev_set_priority (&sigev, EV_MAXPRI);
809 siginit (EV_A); 1120 siginit (EV_A);
810 1121
811#ifndef WIN32 1122#ifndef _WIN32
812 ev_signal_init (&childev, childcb, SIGCHLD); 1123 ev_signal_init (&childev, childcb, SIGCHLD);
813 ev_set_priority (&childev, EV_MAXPRI); 1124 ev_set_priority (&childev, EV_MAXPRI);
814 ev_signal_start (EV_A_ &childev); 1125 ev_signal_start (EV_A_ &childev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1126 ev_unref (EV_A); /* child watcher should not keep loop alive */
816#endif 1127#endif
817 } 1128 }
818 else 1129 else
819 default_loop = 0; 1130 ev_default_loop_ptr = 0;
820 } 1131 }
821 1132
822 return default_loop; 1133 return ev_default_loop_ptr;
823} 1134}
824 1135
825void 1136void
826ev_default_destroy (void) 1137ev_default_destroy (void)
827{ 1138{
828#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
829 struct ev_loop *loop = default_loop; 1140 struct ev_loop *loop = ev_default_loop_ptr;
830#endif 1141#endif
831 1142
1143#ifndef _WIN32
832 ev_ref (EV_A); /* child watcher */ 1144 ev_ref (EV_A); /* child watcher */
833 ev_signal_stop (EV_A_ &childev); 1145 ev_signal_stop (EV_A_ &childev);
1146#endif
834 1147
835 ev_ref (EV_A); /* signal watcher */ 1148 ev_ref (EV_A); /* signal watcher */
836 ev_io_stop (EV_A_ &sigev); 1149 ev_io_stop (EV_A_ &sigev);
837 1150
838 close (sigpipe [0]); sigpipe [0] = 0; 1151 close (sigpipe [0]); sigpipe [0] = 0;
… …
843 1156
844void 1157void
845ev_default_fork (void) 1158ev_default_fork (void)
846{ 1159{
847#if EV_MULTIPLICITY 1160#if EV_MULTIPLICITY
848 struct ev_loop *loop = default_loop; 1161 struct ev_loop *loop = ev_default_loop_ptr;
849#endif 1162#endif
850 1163
851 loop_fork (EV_A); 1164 if (backend)
852 1165 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} 1166}
861 1167
862/*****************************************************************************/ 1168/*****************************************************************************/
863 1169
864static void 1170void
1171ev_invoke (EV_P_ void *w, int revents)
1172{
1173 EV_CB_INVOKE ((W)w, revents);
1174}
1175
1176void inline_speed
865call_pending (EV_P) 1177call_pending (EV_P)
866{ 1178{
867 int pri; 1179 int pri;
868 1180
869 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
870 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
871 { 1183 {
872 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873 1185
874 if (p->w) 1186 if (expect_true (p->w))
875 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
876 p->w->pending = 0; 1190 p->w->pending = 0;
877 p->w->cb (EV_A_ p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
878 } 1192 }
879 } 1193 }
880} 1194}
881 1195
882static void 1196void inline_size
883timers_reify (EV_P) 1197timers_reify (EV_P)
884{ 1198{
885 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
886 { 1200 {
887 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
888 1202
889 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
890 1204
891 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
892 if (w->repeat) 1206 if (w->repeat)
893 { 1207 {
894 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
895 ((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
896 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
897 } 1215 }
898 else 1216 else
899 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900 1218
901 event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902 } 1220 }
903} 1221}
904 1222
905static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
906periodics_reify (EV_P) 1225periodics_reify (EV_P)
907{ 1226{
908 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909 { 1228 {
910 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
911 1230
912 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
913 1232
914 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
915 if (w->interval) 1234 if (w->reschedule_cb)
916 { 1235 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */);
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 {
917 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at = w->offset + (floor ((ev_rt_now - w->offset) / w->interval) + 1.) * w->interval;
918 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));
919 downheap ((WT *)periodics, periodiccnt, 0); 1244 downheap ((WT *)periodics, periodiccnt, 0);
920 } 1245 }
921 else 1246 else
922 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923 1248
924 event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925 } 1250 }
926} 1251}
927 1252
928static void 1253static void noinline
929periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
930{ 1255{
931 int i; 1256 int i;
932 1257
933 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
934 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
935 { 1260 {
936 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
937 1262
1263 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938 if (w->interval) 1265 else if (w->interval)
1266 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / 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--; )
939 { 1284 {
940 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1285 if (pendingcnt [pri])
1286 break;
941 1287
942 if (fabs (diff) >= 1e-4) 1288 if (idlecnt [pri])
943 { 1289 {
944 ev_periodic_stop (EV_A_ w); 1290 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
945 ev_periodic_start (EV_A_ w); 1291 break;
946
947 i = 0; /* restart loop, inefficient, but time jumps should be rare */
948 } 1292 }
949 } 1293 }
950 } 1294 }
951} 1295}
1296#endif
952 1297
953inline int 1298int inline_size
954time_update_monotonic (EV_P) 1299time_update_monotonic (EV_P)
955{ 1300{
956 mn_now = get_clock (); 1301 mn_now = get_clock ();
957 1302
958 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959 { 1304 {
960 rt_now = rtmn_diff + mn_now; 1305 ev_rt_now = rtmn_diff + mn_now;
961 return 0; 1306 return 0;
962 } 1307 }
963 else 1308 else
964 { 1309 {
965 now_floor = mn_now; 1310 now_floor = mn_now;
966 rt_now = ev_time (); 1311 ev_rt_now = ev_time ();
967 return 1; 1312 return 1;
968 } 1313 }
969} 1314}
970 1315
971static void 1316void inline_size
972time_update (EV_P) 1317time_update (EV_P)
973{ 1318{
974 int i; 1319 int i;
975 1320
976#if EV_USE_MONOTONIC 1321#if EV_USE_MONOTONIC
… …
978 { 1323 {
979 if (time_update_monotonic (EV_A)) 1324 if (time_update_monotonic (EV_A))
980 { 1325 {
981 ev_tstamp odiff = rtmn_diff; 1326 ev_tstamp odiff = rtmn_diff;
982 1327
983 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; )
984 { 1337 {
985 rtmn_diff = rt_now - mn_now; 1338 rtmn_diff = ev_rt_now - mn_now;
986 1339
987 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988 return; /* all is well */ 1341 return; /* all is well */
989 1342
990 rt_now = ev_time (); 1343 ev_rt_now = ev_time ();
991 mn_now = get_clock (); 1344 mn_now = get_clock ();
992 now_floor = mn_now; 1345 now_floor = mn_now;
993 } 1346 }
994 1347
1348# if EV_PERIODIC_ENABLE
995 periodics_reschedule (EV_A); 1349 periodics_reschedule (EV_A);
1350# endif
996 /* no timer adjustment, as the monotonic clock doesn't jump */ 1351 /* no timer adjustment, as the monotonic clock doesn't jump */
997 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998 } 1353 }
999 } 1354 }
1000 else 1355 else
1001#endif 1356#endif
1002 { 1357 {
1003 rt_now = ev_time (); 1358 ev_rt_now = ev_time ();
1004 1359
1005 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))
1006 { 1361 {
1362#if EV_PERIODIC_ENABLE
1007 periodics_reschedule (EV_A); 1363 periodics_reschedule (EV_A);
1364#endif
1008 1365
1009 /* 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 */
1010 for (i = 0; i < timercnt; ++i) 1367 for (i = 0; i < timercnt; ++i)
1011 ((WT)timers [i])->at += rt_now - mn_now; 1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
1012 } 1369 }
1013 1370
1014 mn_now = rt_now; 1371 mn_now = ev_rt_now;
1015 } 1372 }
1016} 1373}
1017 1374
1018void 1375void
1019ev_ref (EV_P) 1376ev_ref (EV_P)
… …
1030static int loop_done; 1387static int loop_done;
1031 1388
1032void 1389void
1033ev_loop (EV_P_ int flags) 1390ev_loop (EV_P_ int flags)
1034{ 1391{
1035 double block;
1036 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 */
1037 1397
1038 do 1398 do
1039 { 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
1040 /* queue check watchers (and execute them) */ 1419 /* queue prepare watchers (and execute them) */
1041 if (expect_false (preparecnt)) 1420 if (expect_false (preparecnt))
1042 { 1421 {
1043 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044 call_pending (EV_A); 1423 call_pending (EV_A);
1045 } 1424 }
1046 1425
1426 if (expect_false (!activecnt))
1427 break;
1428
1429 /* we might have forked, so reify kernel state if necessary */
1430 if (expect_false (postfork))
1431 loop_fork (EV_A);
1432
1047 /* update fd-related kernel structures */ 1433 /* update fd-related kernel structures */
1048 fd_reify (EV_A); 1434 fd_reify (EV_A);
1049 1435
1050 /* calculate blocking time */ 1436 /* calculate blocking time */
1437 {
1438 ev_tstamp block;
1051 1439
1052 /* we only need this for !monotonic clockor timers, but as we basically 1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1053 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 */
1054#if EV_USE_MONOTONIC 1445#if EV_USE_MONOTONIC
1055 if (expect_true (have_monotonic)) 1446 if (expect_true (have_monotonic))
1056 time_update_monotonic (EV_A); 1447 time_update_monotonic (EV_A);
1057 else 1448 else
1058#endif 1449#endif
1059 { 1450 {
1060 rt_now = ev_time (); 1451 ev_rt_now = ev_time ();
1061 mn_now = rt_now; 1452 mn_now = ev_rt_now;
1062 } 1453 }
1063 1454
1064 if (flags & EVLOOP_NONBLOCK || idlecnt)
1065 block = 0.;
1066 else
1067 {
1068 block = MAX_BLOCKTIME; 1455 block = MAX_BLOCKTIME;
1069 1456
1070 if (timercnt) 1457 if (timercnt)
1071 { 1458 {
1072 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1073 if (block > to) block = to; 1460 if (block > to) block = to;
1074 } 1461 }
1075 1462
1463#if EV_PERIODIC_ENABLE
1076 if (periodiccnt) 1464 if (periodiccnt)
1077 { 1465 {
1078 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1466 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1079 if (block > to) block = to; 1467 if (block > to) block = to;
1080 } 1468 }
1469#endif
1081 1470
1082 if (block < 0.) block = 0.; 1471 if (expect_false (block < 0.)) block = 0.;
1083 } 1472 }
1084 1473
1474 ++loop_count;
1085 method_poll (EV_A_ block); 1475 backend_poll (EV_A_ block);
1476 }
1086 1477
1087 /* update rt_now, do magic */ 1478 /* update ev_rt_now, do magic */
1088 time_update (EV_A); 1479 time_update (EV_A);
1089 1480
1090 /* queue pending timers and reschedule them */ 1481 /* queue pending timers and reschedule them */
1091 timers_reify (EV_A); /* relative timers called last */ 1482 timers_reify (EV_A); /* relative timers called last */
1483#if EV_PERIODIC_ENABLE
1092 periodics_reify (EV_A); /* absolute timers called first */ 1484 periodics_reify (EV_A); /* absolute timers called first */
1485#endif
1093 1486
1487#if EV_IDLE_ENABLE
1094 /* queue idle watchers unless io or timers are pending */ 1488 /* queue idle watchers unless other events are pending */
1095 if (!pendingcnt) 1489 idle_reify (EV_A);
1096 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1490#endif
1097 1491
1098 /* queue check watchers, to be executed first */ 1492 /* queue check watchers, to be executed first */
1099 if (checkcnt) 1493 if (expect_false (checkcnt))
1100 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101 1495
1102 call_pending (EV_A); 1496 call_pending (EV_A);
1497
1103 } 1498 }
1104 while (activecnt && !loop_done); 1499 while (expect_true (activecnt && !loop_done));
1105 1500
1106 if (loop_done != 2) 1501 if (loop_done == EVUNLOOP_ONE)
1107 loop_done = 0; 1502 loop_done = EVUNLOOP_CANCEL;
1108} 1503}
1109 1504
1110void 1505void
1111ev_unloop (EV_P_ int how) 1506ev_unloop (EV_P_ int how)
1112{ 1507{
1113 loop_done = how; 1508 loop_done = how;
1114} 1509}
1115 1510
1116/*****************************************************************************/ 1511/*****************************************************************************/
1117 1512
1118inline void 1513void inline_size
1119wlist_add (WL *head, WL elem) 1514wlist_add (WL *head, WL elem)
1120{ 1515{
1121 elem->next = *head; 1516 elem->next = *head;
1122 *head = elem; 1517 *head = elem;
1123} 1518}
1124 1519
1125inline void 1520void inline_size
1126wlist_del (WL *head, WL elem) 1521wlist_del (WL *head, WL elem)
1127{ 1522{
1128 while (*head) 1523 while (*head)
1129 { 1524 {
1130 if (*head == elem) 1525 if (*head == elem)
… …
1135 1530
1136 head = &(*head)->next; 1531 head = &(*head)->next;
1137 } 1532 }
1138} 1533}
1139 1534
1140inline void 1535void inline_speed
1141ev_clear_pending (EV_P_ W w) 1536clear_pending (EV_P_ W w)
1142{ 1537{
1143 if (w->pending) 1538 if (w->pending)
1144 { 1539 {
1145 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1540 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146 w->pending = 0; 1541 w->pending = 0;
1147 } 1542 }
1148} 1543}
1149 1544
1150inline void 1545int
1546ev_clear_pending (EV_P_ void *w)
1547{
1548 W w_ = (W)w;
1549 int pending = w_->pending;
1550
1551 if (expect_true (pending))
1552 {
1553 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1554 w_->pending = 0;
1555 p->w = 0;
1556 return p->events;
1557 }
1558 else
1559 return 0;
1560}
1561
1562void inline_size
1563pri_adjust (EV_P_ W w)
1564{
1565 int pri = w->priority;
1566 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1567 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1568 w->priority = pri;
1569}
1570
1571void inline_speed
1151ev_start (EV_P_ W w, int active) 1572ev_start (EV_P_ W w, int active)
1152{ 1573{
1153 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1574 pri_adjust (EV_A_ w);
1154 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155
1156 w->active = active; 1575 w->active = active;
1157 ev_ref (EV_A); 1576 ev_ref (EV_A);
1158} 1577}
1159 1578
1160inline void 1579void inline_size
1161ev_stop (EV_P_ W w) 1580ev_stop (EV_P_ W w)
1162{ 1581{
1163 ev_unref (EV_A); 1582 ev_unref (EV_A);
1164 w->active = 0; 1583 w->active = 0;
1165} 1584}
1166 1585
1167/*****************************************************************************/ 1586/*****************************************************************************/
1168 1587
1169void 1588void noinline
1170ev_io_start (EV_P_ struct ev_io *w) 1589ev_io_start (EV_P_ ev_io *w)
1171{ 1590{
1172 int fd = w->fd; 1591 int fd = w->fd;
1173 1592
1174 if (ev_is_active (w)) 1593 if (expect_false (ev_is_active (w)))
1175 return; 1594 return;
1176 1595
1177 assert (("ev_io_start called with negative fd", fd >= 0)); 1596 assert (("ev_io_start called with negative fd", fd >= 0));
1178 1597
1179 ev_start (EV_A_ (W)w, 1); 1598 ev_start (EV_A_ (W)w, 1);
1180 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1599 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1600 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182 1601
1183 fd_change (EV_A_ fd); 1602 fd_change (EV_A_ fd);
1184} 1603}
1185 1604
1186void 1605void noinline
1187ev_io_stop (EV_P_ struct ev_io *w) 1606ev_io_stop (EV_P_ ev_io *w)
1188{ 1607{
1189 ev_clear_pending (EV_A_ (W)w); 1608 clear_pending (EV_A_ (W)w);
1190 if (!ev_is_active (w)) 1609 if (expect_false (!ev_is_active (w)))
1191 return; 1610 return;
1611
1612 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192 1613
1193 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1614 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194 ev_stop (EV_A_ (W)w); 1615 ev_stop (EV_A_ (W)w);
1195 1616
1196 fd_change (EV_A_ w->fd); 1617 fd_change (EV_A_ w->fd);
1197} 1618}
1198 1619
1199void 1620void noinline
1200ev_timer_start (EV_P_ struct ev_timer *w) 1621ev_timer_start (EV_P_ ev_timer *w)
1201{ 1622{
1202 if (ev_is_active (w)) 1623 if (expect_false (ev_is_active (w)))
1203 return; 1624 return;
1204 1625
1205 ((WT)w)->at += mn_now; 1626 ((WT)w)->at += mn_now;
1206 1627
1207 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1628 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208 1629
1209 ev_start (EV_A_ (W)w, ++timercnt); 1630 ev_start (EV_A_ (W)w, ++timercnt);
1210 array_needsize (timers, timermax, timercnt, ); 1631 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1211 timers [timercnt - 1] = w; 1632 timers [timercnt - 1] = w;
1212 upheap ((WT *)timers, timercnt - 1); 1633 upheap ((WT *)timers, timercnt - 1);
1213 1634
1635 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1636}
1637
1638void noinline
1639ev_timer_stop (EV_P_ ev_timer *w)
1640{
1641 clear_pending (EV_A_ (W)w);
1642 if (expect_false (!ev_is_active (w)))
1643 return;
1644
1214 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1645 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215}
1216 1646
1217void 1647 {
1218ev_timer_stop (EV_P_ struct ev_timer *w) 1648 int active = ((W)w)->active;
1219{
1220 ev_clear_pending (EV_A_ (W)w);
1221 if (!ev_is_active (w))
1222 return;
1223 1649
1224 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1650 if (expect_true (--active < --timercnt))
1225
1226 if (((W)w)->active < timercnt--)
1227 { 1651 {
1228 timers [((W)w)->active - 1] = timers [timercnt]; 1652 timers [active] = timers [timercnt];
1229 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1653 adjustheap ((WT *)timers, timercnt, active);
1230 } 1654 }
1655 }
1231 1656
1232 ((WT)w)->at = w->repeat; 1657 ((WT)w)->at -= mn_now;
1233 1658
1234 ev_stop (EV_A_ (W)w); 1659 ev_stop (EV_A_ (W)w);
1235} 1660}
1236 1661
1237void 1662void noinline
1238ev_timer_again (EV_P_ struct ev_timer *w) 1663ev_timer_again (EV_P_ ev_timer *w)
1239{ 1664{
1240 if (ev_is_active (w)) 1665 if (ev_is_active (w))
1241 { 1666 {
1242 if (w->repeat) 1667 if (w->repeat)
1243 { 1668 {
1244 ((WT)w)->at = mn_now + w->repeat; 1669 ((WT)w)->at = mn_now + w->repeat;
1245 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1670 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246 } 1671 }
1247 else 1672 else
1248 ev_timer_stop (EV_A_ w); 1673 ev_timer_stop (EV_A_ w);
1249 } 1674 }
1250 else if (w->repeat) 1675 else if (w->repeat)
1676 {
1677 w->at = w->repeat;
1251 ev_timer_start (EV_A_ w); 1678 ev_timer_start (EV_A_ w);
1679 }
1252} 1680}
1253 1681
1254void 1682#if EV_PERIODIC_ENABLE
1683void noinline
1255ev_periodic_start (EV_P_ struct ev_periodic *w) 1684ev_periodic_start (EV_P_ ev_periodic *w)
1256{ 1685{
1257 if (ev_is_active (w)) 1686 if (expect_false (ev_is_active (w)))
1258 return; 1687 return;
1259 1688
1689 if (w->reschedule_cb)
1690 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1691 else if (w->interval)
1692 {
1260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1693 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 */ 1694 /* 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; 1695 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1696 }
1697 else
1698 ((WT)w)->at = w->offset;
1265 1699
1266 ev_start (EV_A_ (W)w, ++periodiccnt); 1700 ev_start (EV_A_ (W)w, ++periodiccnt);
1267 array_needsize (periodics, periodicmax, periodiccnt, ); 1701 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268 periodics [periodiccnt - 1] = w; 1702 periodics [periodiccnt - 1] = w;
1269 upheap ((WT *)periodics, periodiccnt - 1); 1703 upheap ((WT *)periodics, periodiccnt - 1);
1270 1704
1705 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1706}
1707
1708void noinline
1709ev_periodic_stop (EV_P_ ev_periodic *w)
1710{
1711 clear_pending (EV_A_ (W)w);
1712 if (expect_false (!ev_is_active (w)))
1713 return;
1714
1271 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1715 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272}
1273 1716
1274void 1717 {
1275ev_periodic_stop (EV_P_ struct ev_periodic *w) 1718 int active = ((W)w)->active;
1276{
1277 ev_clear_pending (EV_A_ (W)w);
1278 if (!ev_is_active (w))
1279 return;
1280 1719
1281 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1720 if (expect_true (--active < --periodiccnt))
1282
1283 if (((W)w)->active < periodiccnt--)
1284 { 1721 {
1285 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1722 periodics [active] = periodics [periodiccnt];
1286 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1723 adjustheap ((WT *)periodics, periodiccnt, active);
1287 } 1724 }
1725 }
1288 1726
1289 ev_stop (EV_A_ (W)w); 1727 ev_stop (EV_A_ (W)w);
1290} 1728}
1291 1729
1292void 1730void noinline
1293ev_idle_start (EV_P_ struct ev_idle *w) 1731ev_periodic_again (EV_P_ ev_periodic *w)
1294{ 1732{
1295 if (ev_is_active (w)) 1733 /* 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); 1734 ev_periodic_stop (EV_A_ w);
1735 ev_periodic_start (EV_A_ w);
1312} 1736}
1313 1737#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 1738
1358#ifndef SA_RESTART 1739#ifndef SA_RESTART
1359# define SA_RESTART 0 1740# define SA_RESTART 0
1360#endif 1741#endif
1361 1742
1362void 1743void noinline
1363ev_signal_start (EV_P_ struct ev_signal *w) 1744ev_signal_start (EV_P_ ev_signal *w)
1364{ 1745{
1365#if EV_MULTIPLICITY 1746#if EV_MULTIPLICITY
1366 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1747 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367#endif 1748#endif
1368 if (ev_is_active (w)) 1749 if (expect_false (ev_is_active (w)))
1369 return; 1750 return;
1370 1751
1371 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1752 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372 1753
1373 ev_start (EV_A_ (W)w, 1); 1754 ev_start (EV_A_ (W)w, 1);
1374 array_needsize (signals, signalmax, w->signum, signals_init); 1755 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1756 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376 1757
1377 if (!((WL)w)->next) 1758 if (!((WL)w)->next)
1378 { 1759 {
1379#if WIN32 1760#if _WIN32
1380 signal (w->signum, sighandler); 1761 signal (w->signum, sighandler);
1381#else 1762#else
1382 struct sigaction sa; 1763 struct sigaction sa;
1383 sa.sa_handler = sighandler; 1764 sa.sa_handler = sighandler;
1384 sigfillset (&sa.sa_mask); 1765 sigfillset (&sa.sa_mask);
… …
1386 sigaction (w->signum, &sa, 0); 1767 sigaction (w->signum, &sa, 0);
1387#endif 1768#endif
1388 } 1769 }
1389} 1770}
1390 1771
1391void 1772void noinline
1392ev_signal_stop (EV_P_ struct ev_signal *w) 1773ev_signal_stop (EV_P_ ev_signal *w)
1393{ 1774{
1394 ev_clear_pending (EV_A_ (W)w); 1775 clear_pending (EV_A_ (W)w);
1395 if (!ev_is_active (w)) 1776 if (expect_false (!ev_is_active (w)))
1396 return; 1777 return;
1397 1778
1398 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1779 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399 ev_stop (EV_A_ (W)w); 1780 ev_stop (EV_A_ (W)w);
1400 1781
1401 if (!signals [w->signum - 1].head) 1782 if (!signals [w->signum - 1].head)
1402 signal (w->signum, SIG_DFL); 1783 signal (w->signum, SIG_DFL);
1403} 1784}
1404 1785
1405void 1786void
1406ev_child_start (EV_P_ struct ev_child *w) 1787ev_child_start (EV_P_ ev_child *w)
1407{ 1788{
1408#if EV_MULTIPLICITY 1789#if EV_MULTIPLICITY
1409 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1790 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410#endif 1791#endif
1411 if (ev_is_active (w)) 1792 if (expect_false (ev_is_active (w)))
1412 return; 1793 return;
1413 1794
1414 ev_start (EV_A_ (W)w, 1); 1795 ev_start (EV_A_ (W)w, 1);
1415 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1796 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1416} 1797}
1417 1798
1418void 1799void
1419ev_child_stop (EV_P_ struct ev_child *w) 1800ev_child_stop (EV_P_ ev_child *w)
1420{ 1801{
1421 ev_clear_pending (EV_A_ (W)w); 1802 clear_pending (EV_A_ (W)w);
1422 if (ev_is_active (w)) 1803 if (expect_false (!ev_is_active (w)))
1423 return; 1804 return;
1424 1805
1425 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1806 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1426 ev_stop (EV_A_ (W)w); 1807 ev_stop (EV_A_ (W)w);
1427} 1808}
1428 1809
1810#if EV_STAT_ENABLE
1811
1812# ifdef _WIN32
1813# undef lstat
1814# define lstat(a,b) _stati64 (a,b)
1815# endif
1816
1817#define DEF_STAT_INTERVAL 5.0074891
1818#define MIN_STAT_INTERVAL 0.1074891
1819
1820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1821
1822#if EV_USE_INOTIFY
1823# define EV_INOTIFY_BUFSIZE 8192
1824
1825static void noinline
1826infy_add (EV_P_ ev_stat *w)
1827{
1828 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);
1829
1830 if (w->wd < 0)
1831 {
1832 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1833
1834 /* monitor some parent directory for speedup hints */
1835 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1836 {
1837 char path [4096];
1838 strcpy (path, w->path);
1839
1840 do
1841 {
1842 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1843 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1844
1845 char *pend = strrchr (path, '/');
1846
1847 if (!pend)
1848 break; /* whoops, no '/', complain to your admin */
1849
1850 *pend = 0;
1851 w->wd = inotify_add_watch (fs_fd, path, mask);
1852 }
1853 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1854 }
1855 }
1856 else
1857 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1858
1859 if (w->wd >= 0)
1860 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1861}
1862
1863static void noinline
1864infy_del (EV_P_ ev_stat *w)
1865{
1866 int slot;
1867 int wd = w->wd;
1868
1869 if (wd < 0)
1870 return;
1871
1872 w->wd = -2;
1873 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1874 wlist_del (&fs_hash [slot].head, (WL)w);
1875
1876 /* remove this watcher, if others are watching it, they will rearm */
1877 inotify_rm_watch (fs_fd, wd);
1878}
1879
1880static void noinline
1881infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1882{
1883 if (slot < 0)
1884 /* overflow, need to check for all hahs slots */
1885 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1886 infy_wd (EV_A_ slot, wd, ev);
1887 else
1888 {
1889 WL w_;
1890
1891 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1892 {
1893 ev_stat *w = (ev_stat *)w_;
1894 w_ = w_->next; /* lets us remove this watcher and all before it */
1895
1896 if (w->wd == wd || wd == -1)
1897 {
1898 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1899 {
1900 w->wd = -1;
1901 infy_add (EV_A_ w); /* re-add, no matter what */
1902 }
1903
1904 stat_timer_cb (EV_A_ &w->timer, 0);
1905 }
1906 }
1907 }
1908}
1909
1910static void
1911infy_cb (EV_P_ ev_io *w, int revents)
1912{
1913 char buf [EV_INOTIFY_BUFSIZE];
1914 struct inotify_event *ev = (struct inotify_event *)buf;
1915 int ofs;
1916 int len = read (fs_fd, buf, sizeof (buf));
1917
1918 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1919 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1920}
1921
1922void inline_size
1923infy_init (EV_P)
1924{
1925 if (fs_fd != -2)
1926 return;
1927
1928 fs_fd = inotify_init ();
1929
1930 if (fs_fd >= 0)
1931 {
1932 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1933 ev_set_priority (&fs_w, EV_MAXPRI);
1934 ev_io_start (EV_A_ &fs_w);
1935 }
1936}
1937
1938void inline_size
1939infy_fork (EV_P)
1940{
1941 int slot;
1942
1943 if (fs_fd < 0)
1944 return;
1945
1946 close (fs_fd);
1947 fs_fd = inotify_init ();
1948
1949 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1950 {
1951 WL w_ = fs_hash [slot].head;
1952 fs_hash [slot].head = 0;
1953
1954 while (w_)
1955 {
1956 ev_stat *w = (ev_stat *)w_;
1957 w_ = w_->next; /* lets us add this watcher */
1958
1959 w->wd = -1;
1960
1961 if (fs_fd >= 0)
1962 infy_add (EV_A_ w); /* re-add, no matter what */
1963 else
1964 ev_timer_start (EV_A_ &w->timer);
1965 }
1966
1967 }
1968}
1969
1970#endif
1971
1972void
1973ev_stat_stat (EV_P_ ev_stat *w)
1974{
1975 if (lstat (w->path, &w->attr) < 0)
1976 w->attr.st_nlink = 0;
1977 else if (!w->attr.st_nlink)
1978 w->attr.st_nlink = 1;
1979}
1980
1981static void noinline
1982stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1983{
1984 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1985
1986 /* we copy this here each the time so that */
1987 /* prev has the old value when the callback gets invoked */
1988 w->prev = w->attr;
1989 ev_stat_stat (EV_A_ w);
1990
1991 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1992 if (
1993 w->prev.st_dev != w->attr.st_dev
1994 || w->prev.st_ino != w->attr.st_ino
1995 || w->prev.st_mode != w->attr.st_mode
1996 || w->prev.st_nlink != w->attr.st_nlink
1997 || w->prev.st_uid != w->attr.st_uid
1998 || w->prev.st_gid != w->attr.st_gid
1999 || w->prev.st_rdev != w->attr.st_rdev
2000 || w->prev.st_size != w->attr.st_size
2001 || w->prev.st_atime != w->attr.st_atime
2002 || w->prev.st_mtime != w->attr.st_mtime
2003 || w->prev.st_ctime != w->attr.st_ctime
2004 ) {
2005 #if EV_USE_INOTIFY
2006 infy_del (EV_A_ w);
2007 infy_add (EV_A_ w);
2008 ev_stat_stat (EV_A_ w); /* avoid race... */
2009 #endif
2010
2011 ev_feed_event (EV_A_ w, EV_STAT);
2012 }
2013}
2014
2015void
2016ev_stat_start (EV_P_ ev_stat *w)
2017{
2018 if (expect_false (ev_is_active (w)))
2019 return;
2020
2021 /* since we use memcmp, we need to clear any padding data etc. */
2022 memset (&w->prev, 0, sizeof (ev_statdata));
2023 memset (&w->attr, 0, sizeof (ev_statdata));
2024
2025 ev_stat_stat (EV_A_ w);
2026
2027 if (w->interval < MIN_STAT_INTERVAL)
2028 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2029
2030 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2031 ev_set_priority (&w->timer, ev_priority (w));
2032
2033#if EV_USE_INOTIFY
2034 infy_init (EV_A);
2035
2036 if (fs_fd >= 0)
2037 infy_add (EV_A_ w);
2038 else
2039#endif
2040 ev_timer_start (EV_A_ &w->timer);
2041
2042 ev_start (EV_A_ (W)w, 1);
2043}
2044
2045void
2046ev_stat_stop (EV_P_ ev_stat *w)
2047{
2048 clear_pending (EV_A_ (W)w);
2049 if (expect_false (!ev_is_active (w)))
2050 return;
2051
2052#if EV_USE_INOTIFY
2053 infy_del (EV_A_ w);
2054#endif
2055 ev_timer_stop (EV_A_ &w->timer);
2056
2057 ev_stop (EV_A_ (W)w);
2058}
2059#endif
2060
2061#if EV_IDLE_ENABLE
2062void
2063ev_idle_start (EV_P_ ev_idle *w)
2064{
2065 if (expect_false (ev_is_active (w)))
2066 return;
2067
2068 pri_adjust (EV_A_ (W)w);
2069
2070 {
2071 int active = ++idlecnt [ABSPRI (w)];
2072
2073 ++idleall;
2074 ev_start (EV_A_ (W)w, active);
2075
2076 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2077 idles [ABSPRI (w)][active - 1] = w;
2078 }
2079}
2080
2081void
2082ev_idle_stop (EV_P_ ev_idle *w)
2083{
2084 clear_pending (EV_A_ (W)w);
2085 if (expect_false (!ev_is_active (w)))
2086 return;
2087
2088 {
2089 int active = ((W)w)->active;
2090
2091 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2092 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2093
2094 ev_stop (EV_A_ (W)w);
2095 --idleall;
2096 }
2097}
2098#endif
2099
2100void
2101ev_prepare_start (EV_P_ ev_prepare *w)
2102{
2103 if (expect_false (ev_is_active (w)))
2104 return;
2105
2106 ev_start (EV_A_ (W)w, ++preparecnt);
2107 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2108 prepares [preparecnt - 1] = w;
2109}
2110
2111void
2112ev_prepare_stop (EV_P_ ev_prepare *w)
2113{
2114 clear_pending (EV_A_ (W)w);
2115 if (expect_false (!ev_is_active (w)))
2116 return;
2117
2118 {
2119 int active = ((W)w)->active;
2120 prepares [active - 1] = prepares [--preparecnt];
2121 ((W)prepares [active - 1])->active = active;
2122 }
2123
2124 ev_stop (EV_A_ (W)w);
2125}
2126
2127void
2128ev_check_start (EV_P_ ev_check *w)
2129{
2130 if (expect_false (ev_is_active (w)))
2131 return;
2132
2133 ev_start (EV_A_ (W)w, ++checkcnt);
2134 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2135 checks [checkcnt - 1] = w;
2136}
2137
2138void
2139ev_check_stop (EV_P_ ev_check *w)
2140{
2141 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w)))
2143 return;
2144
2145 {
2146 int active = ((W)w)->active;
2147 checks [active - 1] = checks [--checkcnt];
2148 ((W)checks [active - 1])->active = active;
2149 }
2150
2151 ev_stop (EV_A_ (W)w);
2152}
2153
2154#if EV_EMBED_ENABLE
2155void noinline
2156ev_embed_sweep (EV_P_ ev_embed *w)
2157{
2158 ev_loop (w->loop, EVLOOP_NONBLOCK);
2159}
2160
2161static void
2162embed_cb (EV_P_ ev_io *io, int revents)
2163{
2164 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2165
2166 if (ev_cb (w))
2167 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2168 else
2169 ev_embed_sweep (loop, w);
2170}
2171
2172void
2173ev_embed_start (EV_P_ ev_embed *w)
2174{
2175 if (expect_false (ev_is_active (w)))
2176 return;
2177
2178 {
2179 struct ev_loop *loop = w->loop;
2180 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2181 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2182 }
2183
2184 ev_set_priority (&w->io, ev_priority (w));
2185 ev_io_start (EV_A_ &w->io);
2186
2187 ev_start (EV_A_ (W)w, 1);
2188}
2189
2190void
2191ev_embed_stop (EV_P_ ev_embed *w)
2192{
2193 clear_pending (EV_A_ (W)w);
2194 if (expect_false (!ev_is_active (w)))
2195 return;
2196
2197 ev_io_stop (EV_A_ &w->io);
2198
2199 ev_stop (EV_A_ (W)w);
2200}
2201#endif
2202
2203#if EV_FORK_ENABLE
2204void
2205ev_fork_start (EV_P_ ev_fork *w)
2206{
2207 if (expect_false (ev_is_active (w)))
2208 return;
2209
2210 ev_start (EV_A_ (W)w, ++forkcnt);
2211 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2212 forks [forkcnt - 1] = w;
2213}
2214
2215void
2216ev_fork_stop (EV_P_ ev_fork *w)
2217{
2218 clear_pending (EV_A_ (W)w);
2219 if (expect_false (!ev_is_active (w)))
2220 return;
2221
2222 {
2223 int active = ((W)w)->active;
2224 forks [active - 1] = forks [--forkcnt];
2225 ((W)forks [active - 1])->active = active;
2226 }
2227
2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
1429/*****************************************************************************/ 2232/*****************************************************************************/
1430 2233
1431struct ev_once 2234struct ev_once
1432{ 2235{
1433 struct ev_io io; 2236 ev_io io;
1434 struct ev_timer to; 2237 ev_timer to;
1435 void (*cb)(int revents, void *arg); 2238 void (*cb)(int revents, void *arg);
1436 void *arg; 2239 void *arg;
1437}; 2240};
1438 2241
1439static void 2242static void
… …
1448 2251
1449 cb (revents, arg); 2252 cb (revents, arg);
1450} 2253}
1451 2254
1452static void 2255static void
1453once_cb_io (EV_P_ struct ev_io *w, int revents) 2256once_cb_io (EV_P_ ev_io *w, int revents)
1454{ 2257{
1455 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1456} 2259}
1457 2260
1458static void 2261static void
1459once_cb_to (EV_P_ struct ev_timer *w, int revents) 2262once_cb_to (EV_P_ ev_timer *w, int revents)
1460{ 2263{
1461 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2264 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1462} 2265}
1463 2266
1464void 2267void
1465ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2268ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1466{ 2269{
1467 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2270 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468 2271
1469 if (!once) 2272 if (expect_false (!once))
2273 {
1470 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2274 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471 else 2275 return;
1472 { 2276 }
2277
1473 once->cb = cb; 2278 once->cb = cb;
1474 once->arg = arg; 2279 once->arg = arg;
1475 2280
1476 ev_watcher_init (&once->io, once_cb_io); 2281 ev_init (&once->io, once_cb_io);
1477 if (fd >= 0) 2282 if (fd >= 0)
1478 { 2283 {
1479 ev_io_set (&once->io, fd, events); 2284 ev_io_set (&once->io, fd, events);
1480 ev_io_start (EV_A_ &once->io); 2285 ev_io_start (EV_A_ &once->io);
1481 } 2286 }
1482 2287
1483 ev_watcher_init (&once->to, once_cb_to); 2288 ev_init (&once->to, once_cb_to);
1484 if (timeout >= 0.) 2289 if (timeout >= 0.)
1485 { 2290 {
1486 ev_timer_set (&once->to, timeout, 0.); 2291 ev_timer_set (&once->to, timeout, 0.);
1487 ev_timer_start (EV_A_ &once->to); 2292 ev_timer_start (EV_A_ &once->to);
1488 }
1489 } 2293 }
1490} 2294}
1491 2295
2296#ifdef __cplusplus
2297}
2298#endif
2299

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