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Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.190 by root, Fri Dec 21 01:26:04 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_STAT_ENABLE
208# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0
210#endif
211
212#if EV_USE_INOTIFY
213# include <sys/inotify.h>
214#endif
215
216#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h>
218#endif
219
121/**/ 220/**/
122 221
222/*
223 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding
226 * errors are against us.
227 * This value is good at least till the year 4000.
228 * Better solutions welcome.
229 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
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 */ 234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127 235
128#include "ev.h"
129
130#if __GNUC__ >= 3 236#if __GNUC__ >= 4
131# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 238# define noinline __attribute__ ((noinline))
133#else 239#else
134# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
135# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
136#endif 245#endif
137 246
138#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 248#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline
250
251#if EV_MINIMAL
252# define inline_speed static noinline
253#else
254# define inline_speed static inline
255#endif
140 256
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
144typedef struct ev_watcher *W; 263typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
147 266
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 268
150#if WIN32 269#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 270# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 271#endif
155 272
156/*****************************************************************************/ 273/*****************************************************************************/
157 274
275static void (*syserr_cb)(const char *msg);
276
277void
278ev_set_syserr_cb (void (*cb)(const char *msg))
279{
280 syserr_cb = cb;
281}
282
283static void noinline
284syserr (const char *msg)
285{
286 if (!msg)
287 msg = "(libev) system error";
288
289 if (syserr_cb)
290 syserr_cb (msg);
291 else
292 {
293 perror (msg);
294 abort ();
295 }
296}
297
298static void *(*alloc)(void *ptr, long size);
299
300void
301ev_set_allocator (void *(*cb)(void *ptr, long size))
302{
303 alloc = cb;
304}
305
306inline_speed void *
307ev_realloc (void *ptr, long size)
308{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
310
311 if (!ptr && size)
312 {
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314 abort ();
315 }
316
317 return ptr;
318}
319
320#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0)
322
323/*****************************************************************************/
324
158typedef struct 325typedef struct
159{ 326{
160 struct ev_watcher_list *head; 327 WL head;
161 unsigned char events; 328 unsigned char events;
162 unsigned char reify; 329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
163} ANFD; 333} ANFD;
164 334
165typedef struct 335typedef struct
166{ 336{
167 W w; 337 W w;
168 int events; 338 int events;
169} ANPENDING; 339} ANPENDING;
170 340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
171#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
172 349
173struct ev_loop 350 struct ev_loop
174{ 351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 354 #define VAR(name,decl) decl;
176# include "ev_vars.h" 355 #include "ev_vars.h"
177};
178# undef VAR 356 #undef VAR
357 };
179# include "ev_wrap.h" 358 #include "ev_wrap.h"
359
360 static struct ev_loop default_loop_struct;
361 struct ev_loop *ev_default_loop_ptr;
180 362
181#else 363#else
182 364
365 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 367 #include "ev_vars.h"
185# undef VAR 368 #undef VAR
369
370 static int ev_default_loop_ptr;
186 371
187#endif 372#endif
188 373
189/*****************************************************************************/ 374/*****************************************************************************/
190 375
191inline ev_tstamp 376ev_tstamp
192ev_time (void) 377ev_time (void)
193{ 378{
194#if EV_USE_REALTIME 379#if EV_USE_REALTIME
195 struct timespec ts; 380 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 387#endif
203} 388}
204 389
205inline ev_tstamp 390ev_tstamp inline_size
206get_clock (void) 391get_clock (void)
207{ 392{
208#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
210 { 395 {
… …
215#endif 400#endif
216 401
217 return ev_time (); 402 return ev_time ();
218} 403}
219 404
405#if EV_MULTIPLICITY
220ev_tstamp 406ev_tstamp
221ev_now (EV_P) 407ev_now (EV_P)
222{ 408{
223 return rt_now; 409 return ev_rt_now;
224} 410}
411#endif
225 412
226#define array_roundsize(base,n) ((n) | 4 & ~3) 413int inline_size
414array_nextsize (int elem, int cur, int cnt)
415{
416 int ncur = cur + 1;
227 417
418 do
419 ncur <<= 1;
420 while (cnt > ncur);
421
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096)
424 {
425 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
427 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem;
429 }
430
431 return ncur;
432}
433
434static noinline void *
435array_realloc (int elem, void *base, int *cur, int cnt)
436{
437 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur);
439}
440
228#define array_needsize(base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
230 { \ 443 { \
231 int newcnt = cur; \ 444 int ocur_ = (cur); \
232 do \ 445 (base) = (type *)array_realloc \
233 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
235 } \
236 while ((cnt) > newcnt); \
237 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \
239 init (base + cur, newcnt - cur); \
240 cur = newcnt; \
241 } 448 }
242 449
450#if 0
243#define array_slim(stem) \ 451#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 453 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 457 }
458#endif
250 459
251#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 462
254/*****************************************************************************/ 463/*****************************************************************************/
255 464
256static void 465void noinline
466ev_feed_event (EV_P_ void *w, int revents)
467{
468 W w_ = (W)w;
469 int pri = ABSPRI (w_);
470
471 if (expect_false (w_->pending))
472 pendings [pri][w_->pending - 1].events |= revents;
473 else
474 {
475 w_->pending = ++pendingcnt [pri];
476 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
477 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents;
479 }
480}
481
482void inline_speed
483queue_events (EV_P_ W *events, int eventcnt, int type)
484{
485 int i;
486
487 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type);
489}
490
491/*****************************************************************************/
492
493void inline_size
257anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
258{ 495{
259 while (count--) 496 while (count--)
260 { 497 {
261 base->head = 0; 498 base->head = 0;
… …
264 501
265 ++base; 502 ++base;
266 } 503 }
267} 504}
268 505
269static void 506void inline_speed
270event (EV_P_ W w, int events)
271{
272 if (w->pending)
273 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events;
275 return;
276 }
277
278 w->pending = ++pendingcnt [ABSPRI (w)];
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280 pendings [ABSPRI (w)][w->pending - 1].w = w;
281 pendings [ABSPRI (w)][w->pending - 1].events = events;
282}
283
284static void
285queue_events (EV_P_ W *events, int eventcnt, int type)
286{
287 int i;
288
289 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type);
291}
292
293static void
294fd_event (EV_P_ int fd, int events) 507fd_event (EV_P_ int fd, int revents)
295{ 508{
296 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 510 ev_io *w;
298 511
299 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300 { 513 {
301 int ev = w->events & events; 514 int ev = w->events & revents;
302 515
303 if (ev) 516 if (ev)
304 event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
305 } 518 }
306} 519}
307 520
308/*****************************************************************************/ 521void
522ev_feed_fd_event (EV_P_ int fd, int revents)
523{
524 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents);
526}
309 527
310static void 528void inline_size
311fd_reify (EV_P) 529fd_reify (EV_P)
312{ 530{
313 int i; 531 int i;
314 532
315 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
316 { 534 {
317 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 537 ev_io *w;
320 538
321 int events = 0; 539 unsigned char events = 0;
322 540
323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
324 events |= w->events; 542 events |= (unsigned char)w->events;
325 543
544#if EV_SELECT_IS_WINSOCKET
545 if (events)
546 {
547 unsigned long argp;
548 anfd->handle = _get_osfhandle (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
550 }
551#endif
552
553 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
326 anfd->reify = 0; 557 anfd->reify = 0;
327
328 method_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 558 anfd->events = events;
559
560 if (o_events != events || o_reify & EV_IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events);
562 }
330 } 563 }
331 564
332 fdchangecnt = 0; 565 fdchangecnt = 0;
333} 566}
334 567
335static void 568void inline_size
336fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
337{ 570{
338 if (anfds [fd].reify || fdchangecnt < 0) 571 unsigned char reify = anfds [fd].reify;
339 return;
340
341 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
342 573
574 if (expect_true (!reify))
575 {
343 ++fdchangecnt; 576 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
346} 580}
347 581
348static void 582void inline_speed
349fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
350{ 584{
351 struct ev_io *w; 585 ev_io *w;
352 586
353 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
354 { 588 {
355 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 591 }
592}
593
594int inline_size
595fd_valid (int fd)
596{
597#ifdef _WIN32
598 return _get_osfhandle (fd) != -1;
599#else
600 return fcntl (fd, F_GETFD) != -1;
601#endif
358} 602}
359 603
360/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
361static void 605static void noinline
362fd_ebadf (EV_P) 606fd_ebadf (EV_P)
363{ 607{
364 int fd; 608 int fd;
365 609
366 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 611 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
369 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
370} 614}
371 615
372/* called on ENOMEM in select/poll to kill some fds and retry */ 616/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 617static void noinline
374fd_enomem (EV_P) 618fd_enomem (EV_P)
375{ 619{
376 int fd; 620 int fd;
377 621
378 for (fd = anfdmax; fd--; ) 622 for (fd = anfdmax; fd--; )
379 if (anfds [fd].events) 623 if (anfds [fd].events)
380 { 624 {
381 close (fd);
382 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
383 return; 626 return;
384 } 627 }
385} 628}
386 629
387/* susually called after fork if method needs to re-arm all fds from scratch */ 630/* usually called after fork if backend needs to re-arm all fds from scratch */
388static void 631static void noinline
389fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
390{ 633{
391 int fd; 634 int fd;
392 635
393 /* this should be highly optimised to not do anything but set a flag */
394 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
395 if (anfds [fd].events) 637 if (anfds [fd].events)
396 { 638 {
397 anfds [fd].events = 0; 639 anfds [fd].events = 0;
398 fd_change (EV_A_ fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
399 } 641 }
400} 642}
401 643
402/*****************************************************************************/ 644/*****************************************************************************/
403 645
404static void 646void inline_speed
405upheap (WT *heap, int k) 647upheap (WT *heap, int k)
406{ 648{
407 WT w = heap [k]; 649 WT w = heap [k];
408 650
409 while (k && heap [k >> 1]->at > w->at) 651 while (k)
410 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
411 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
412 ((W)heap [k])->active = k + 1; 659 ((W)heap [k])->active = k + 1;
413 k >>= 1; 660 k = p;
414 } 661 }
415 662
416 heap [k] = w; 663 heap [k] = w;
417 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
418
419} 665}
420 666
421static void 667void inline_speed
422downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
423{ 669{
424 WT w = heap [k]; 670 WT w = heap [k];
425 671
426 while (k < (N >> 1)) 672 for (;;)
427 { 673 {
428 int j = k << 1; 674 int c = (k << 1) + 1;
429 675
430 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
431 ++j;
432
433 if (w->at <= heap [j]->at)
434 break; 677 break;
435 678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
436 heap [k] = heap [j]; 685 heap [k] = heap [c];
437 ((W)heap [k])->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
438 k = j; 688 k = c;
439 } 689 }
440 690
441 heap [k] = w; 691 heap [k] = w;
442 ((W)heap [k])->active = k + 1; 692 ((W)heap [k])->active = k + 1;
443} 693}
444 694
695void inline_size
696adjustheap (WT *heap, int N, int k)
697{
698 upheap (heap, k);
699 downheap (heap, N, k);
700}
701
445/*****************************************************************************/ 702/*****************************************************************************/
446 703
447typedef struct 704typedef struct
448{ 705{
449 struct ev_watcher_list *head; 706 WL head;
450 sig_atomic_t volatile gotsig; 707 sig_atomic_t volatile gotsig;
451} ANSIG; 708} ANSIG;
452 709
453static ANSIG *signals; 710static ANSIG *signals;
454static int signalmax; 711static int signalmax;
455 712
456static int sigpipe [2]; 713static int sigpipe [2];
457static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
458static struct ev_io sigev; 715static ev_io sigev;
459 716
460static void 717void inline_size
461signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
462{ 719{
463 while (count--) 720 while (count--)
464 { 721 {
465 base->head = 0; 722 base->head = 0;
… …
470} 727}
471 728
472static void 729static void
473sighandler (int signum) 730sighandler (int signum)
474{ 731{
475#if WIN32 732#if _WIN32
476 signal (signum, sighandler); 733 signal (signum, sighandler);
477#endif 734#endif
478 735
479 signals [signum - 1].gotsig = 1; 736 signals [signum - 1].gotsig = 1;
480 737
… …
485 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
486 errno = old_errno; 743 errno = old_errno;
487 } 744 }
488} 745}
489 746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
490static void 767static void
491sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
492{ 769{
493 struct ev_watcher_list *w;
494 int signum; 770 int signum;
495 771
496 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
497 gotsig = 0; 773 gotsig = 0;
498 774
499 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
500 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
501 { 777 ev_feed_signal_event (EV_A_ signum + 1);
502 signals [signum].gotsig = 0;
503
504 for (w = signals [signum].head; w; w = w->next)
505 event (EV_A_ (W)w, EV_SIGNAL);
506 }
507} 778}
508 779
509static void 780void inline_speed
781fd_intern (int fd)
782{
783#ifdef _WIN32
784 int arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif
790}
791
792static void noinline
510siginit (EV_P) 793siginit (EV_P)
511{ 794{
512#ifndef WIN32 795 fd_intern (sigpipe [0]);
513 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 796 fd_intern (sigpipe [1]);
514 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516 /* rather than sort out wether we really need nb, set it */
517 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519#endif
520 797
521 ev_io_set (&sigev, sigpipe [0], EV_READ); 798 ev_io_set (&sigev, sigpipe [0], EV_READ);
522 ev_io_start (EV_A_ &sigev); 799 ev_io_start (EV_A_ &sigev);
523 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
524} 801}
525 802
526/*****************************************************************************/ 803/*****************************************************************************/
527 804
805static WL childs [EV_PID_HASHSIZE];
806
528#ifndef WIN32 807#ifndef _WIN32
529 808
530static struct ev_child *childs [PID_HASHSIZE];
531static struct ev_signal childev; 809static ev_signal childev;
810
811void inline_speed
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813{
814 ev_child *w;
815
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
817 if (w->pid == pid || !w->pid)
818 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
820 w->rpid = pid;
821 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 }
824}
532 825
533#ifndef WCONTINUED 826#ifndef WCONTINUED
534# define WCONTINUED 0 827# define WCONTINUED 0
535#endif 828#endif
536 829
537static void 830static void
538child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
539{
540 struct ev_child *w;
541
542 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
543 if (w->pid == pid || !w->pid)
544 {
545 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
546 w->rpid = pid;
547 w->rstatus = status;
548 event (EV_A_ (W)w, EV_CHILD);
549 }
550}
551
552static void
553childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
554{ 832{
555 int pid, status; 833 int pid, status;
556 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
559 /* make sure we are called again until all childs have been reaped */ 842 /* make sure we are called again until all childs have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */
560 event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561 845
562 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
563 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564 }
565} 849}
566 850
567#endif 851#endif
568 852
569/*****************************************************************************/ 853/*****************************************************************************/
570 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
571#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
572# include "ev_kqueue.c" 859# include "ev_kqueue.c"
573#endif 860#endif
574#if EV_USE_EPOLL 861#if EV_USE_EPOLL
575# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
592{ 879{
593 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
594} 881}
595 882
596/* return true if we are running with elevated privileges and should ignore env variables */ 883/* return true if we are running with elevated privileges and should ignore env variables */
597static int 884int inline_size
598enable_secure (void) 885enable_secure (void)
599{ 886{
600#ifdef WIN32 887#ifdef _WIN32
601 return 0; 888 return 0;
602#else 889#else
603 return getuid () != geteuid () 890 return getuid () != geteuid ()
604 || getgid () != getegid (); 891 || getgid () != getegid ();
605#endif 892#endif
606} 893}
607 894
608int 895unsigned int
609ev_method (EV_P) 896ev_supported_backends (void)
610{ 897{
611 return method; 898 unsigned int flags = 0;
612}
613 899
614static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
615loop_init (EV_P_ int methods) 901 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
902 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
903 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
904 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
905
906 return flags;
907}
908
909unsigned int
910ev_recommended_backends (void)
616{ 911{
617 if (!method) 912 unsigned int flags = ev_supported_backends ();
913
914#ifndef __NetBSD__
915 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE;
918#endif
919#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation
921 flags &= ~EVBACKEND_POLL;
922#endif
923
924 return flags;
925}
926
927unsigned int
928ev_embeddable_backends (void)
929{
930 return EVBACKEND_EPOLL
931 | EVBACKEND_KQUEUE
932 | EVBACKEND_PORT;
933}
934
935unsigned int
936ev_backend (EV_P)
937{
938 return backend;
939}
940
941unsigned int
942ev_loop_count (EV_P)
943{
944 return loop_count;
945}
946
947static void noinline
948loop_init (EV_P_ unsigned int flags)
949{
950 if (!backend)
618 { 951 {
619#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
620 { 953 {
621 struct timespec ts; 954 struct timespec ts;
622 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623 have_monotonic = 1; 956 have_monotonic = 1;
624 } 957 }
625#endif 958#endif
626 959
627 rt_now = ev_time (); 960 ev_rt_now = ev_time ();
628 mn_now = get_clock (); 961 mn_now = get_clock ();
629 now_floor = mn_now; 962 now_floor = mn_now;
630 rtmn_diff = rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
631 964
632 if (methods == EVMETHOD_AUTO) 965 /* pid check not overridable via env */
633 if (!enable_secure () && getenv ("LIBEV_METHODS")) 966#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid ();
969#endif
970
971 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS"))
634 methods = atoi (getenv ("LIBEV_METHODS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
635 else
636 methods = EVMETHOD_ANY;
637 975
638 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
639#if EV_USE_WIN32 981#if EV_USE_INOTIFY
640 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 982 fs_fd = -2;
983#endif
984
985#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
641#endif 987#endif
642#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
643 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644#endif 990#endif
645#if EV_USE_EPOLL 991#if EV_USE_EPOLL
646 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647#endif 993#endif
648#if EV_USE_POLL 994#if EV_USE_POLL
649 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650#endif 996#endif
651#if EV_USE_SELECT 997#if EV_USE_SELECT
652 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653#endif 999#endif
654 }
655}
656 1000
657void 1001 ev_init (&sigev, sigcb);
1002 ev_set_priority (&sigev, EV_MAXPRI);
1003 }
1004}
1005
1006static void noinline
658loop_destroy (EV_P) 1007loop_destroy (EV_P)
659{ 1008{
660 int i; 1009 int i;
661 1010
662#if EV_USE_WIN32 1011#if EV_USE_INOTIFY
663 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1012 if (fs_fd >= 0)
1013 close (fs_fd);
1014#endif
1015
1016 if (backend_fd >= 0)
1017 close (backend_fd);
1018
1019#if EV_USE_PORT
1020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
664#endif 1021#endif
665#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
666 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667#endif 1024#endif
668#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670#endif 1027#endif
671#if EV_USE_POLL 1028#if EV_USE_POLL
672 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673#endif 1030#endif
674#if EV_USE_SELECT 1031#if EV_USE_SELECT
675 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676#endif 1033#endif
677 1034
678 for (i = NUMPRI; i--; ) 1035 for (i = NUMPRI; i--; )
1036 {
679 array_free (pending, [i]); 1037 array_free (pending, [i]);
1038#if EV_IDLE_ENABLE
1039 array_free (idle, [i]);
1040#endif
1041 }
680 1042
1043 ev_free (anfds); anfdmax = 0;
1044
1045 /* have to use the microsoft-never-gets-it-right macro */
681 array_free (fdchange, ); 1046 array_free (fdchange, EMPTY);
682 array_free (timer, ); 1047 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE
683 array_free (periodic, ); 1049 array_free (periodic, EMPTY);
684 array_free (idle, ); 1050#endif
1051#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY);
1053#endif
685 array_free (prepare, ); 1054 array_free (prepare, EMPTY);
686 array_free (check, ); 1055 array_free (check, EMPTY);
687 1056
688 method = 0; 1057 backend = 0;
689 /*TODO*/
690} 1058}
691 1059
692void 1060void inline_size infy_fork (EV_P);
1061
1062void inline_size
693loop_fork (EV_P) 1063loop_fork (EV_P)
694{ 1064{
695 /*TODO*/ 1065#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif
1068#if EV_USE_KQUEUE
1069 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1070#endif
696#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
697 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1072 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
698#endif 1073#endif
699#if EV_USE_KQUEUE 1074#if EV_USE_INOTIFY
700 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1075 infy_fork (EV_A);
701#endif 1076#endif
1077
1078 if (ev_is_active (&sigev))
1079 {
1080 /* default loop */
1081
1082 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev);
1084 close (sigpipe [0]);
1085 close (sigpipe [1]);
1086
1087 while (pipe (sigpipe))
1088 syserr ("(libev) error creating pipe");
1089
1090 siginit (EV_A);
1091 }
1092
1093 postfork = 0;
702} 1094}
703 1095
704#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
705struct ev_loop * 1097struct ev_loop *
706ev_loop_new (int methods) 1098ev_loop_new (unsigned int flags)
707{ 1099{
708 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
709 1101
1102 memset (loop, 0, sizeof (struct ev_loop));
1103
710 loop_init (EV_A_ methods); 1104 loop_init (EV_A_ flags);
711 1105
712 if (ev_method (EV_A)) 1106 if (ev_backend (EV_A))
713 return loop; 1107 return loop;
714 1108
715 return 0; 1109 return 0;
716} 1110}
717 1111
718void 1112void
719ev_loop_destroy (EV_P) 1113ev_loop_destroy (EV_P)
720{ 1114{
721 loop_destroy (EV_A); 1115 loop_destroy (EV_A);
722 free (loop); 1116 ev_free (loop);
723} 1117}
724 1118
725void 1119void
726ev_loop_fork (EV_P) 1120ev_loop_fork (EV_P)
727{ 1121{
728 loop_fork (EV_A); 1122 postfork = 1;
729} 1123}
730 1124
731#endif 1125#endif
732 1126
733#if EV_MULTIPLICITY 1127#if EV_MULTIPLICITY
734struct ev_loop default_loop_struct;
735static struct ev_loop *default_loop;
736
737struct ev_loop * 1128struct ev_loop *
1129ev_default_loop_init (unsigned int flags)
738#else 1130#else
739static int default_loop;
740
741int 1131int
1132ev_default_loop (unsigned int flags)
742#endif 1133#endif
743ev_default_loop (int methods)
744{ 1134{
745 if (sigpipe [0] == sigpipe [1]) 1135 if (sigpipe [0] == sigpipe [1])
746 if (pipe (sigpipe)) 1136 if (pipe (sigpipe))
747 return 0; 1137 return 0;
748 1138
749 if (!default_loop) 1139 if (!ev_default_loop_ptr)
750 { 1140 {
751#if EV_MULTIPLICITY 1141#if EV_MULTIPLICITY
752 struct ev_loop *loop = default_loop = &default_loop_struct; 1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
753#else 1143#else
754 default_loop = 1; 1144 ev_default_loop_ptr = 1;
755#endif 1145#endif
756 1146
757 loop_init (EV_A_ methods); 1147 loop_init (EV_A_ flags);
758 1148
759 if (ev_method (EV_A)) 1149 if (ev_backend (EV_A))
760 { 1150 {
761 ev_watcher_init (&sigev, sigcb);
762 ev_set_priority (&sigev, EV_MAXPRI);
763 siginit (EV_A); 1151 siginit (EV_A);
764 1152
765#ifndef WIN32 1153#ifndef _WIN32
766 ev_signal_init (&childev, childcb, SIGCHLD); 1154 ev_signal_init (&childev, childcb, SIGCHLD);
767 ev_set_priority (&childev, EV_MAXPRI); 1155 ev_set_priority (&childev, EV_MAXPRI);
768 ev_signal_start (EV_A_ &childev); 1156 ev_signal_start (EV_A_ &childev);
769 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1157 ev_unref (EV_A); /* child watcher should not keep loop alive */
770#endif 1158#endif
771 } 1159 }
772 else 1160 else
773 default_loop = 0; 1161 ev_default_loop_ptr = 0;
774 } 1162 }
775 1163
776 return default_loop; 1164 return ev_default_loop_ptr;
777} 1165}
778 1166
779void 1167void
780ev_default_destroy (void) 1168ev_default_destroy (void)
781{ 1169{
782#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
783 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
784#endif 1172#endif
785 1173
1174#ifndef _WIN32
786 ev_ref (EV_A); /* child watcher */ 1175 ev_ref (EV_A); /* child watcher */
787 ev_signal_stop (EV_A_ &childev); 1176 ev_signal_stop (EV_A_ &childev);
1177#endif
788 1178
789 ev_ref (EV_A); /* signal watcher */ 1179 ev_ref (EV_A); /* signal watcher */
790 ev_io_stop (EV_A_ &sigev); 1180 ev_io_stop (EV_A_ &sigev);
791 1181
792 close (sigpipe [0]); sigpipe [0] = 0; 1182 close (sigpipe [0]); sigpipe [0] = 0;
… …
797 1187
798void 1188void
799ev_default_fork (void) 1189ev_default_fork (void)
800{ 1190{
801#if EV_MULTIPLICITY 1191#if EV_MULTIPLICITY
802 struct ev_loop *loop = default_loop; 1192 struct ev_loop *loop = ev_default_loop_ptr;
803#endif 1193#endif
804 1194
805 loop_fork (EV_A); 1195 if (backend)
806 1196 postfork = 1;
807 ev_io_stop (EV_A_ &sigev);
808 close (sigpipe [0]);
809 close (sigpipe [1]);
810 pipe (sigpipe);
811
812 ev_ref (EV_A); /* signal watcher */
813 siginit (EV_A);
814} 1197}
815 1198
816/*****************************************************************************/ 1199/*****************************************************************************/
817 1200
818static void 1201void
1202ev_invoke (EV_P_ void *w, int revents)
1203{
1204 EV_CB_INVOKE ((W)w, revents);
1205}
1206
1207void inline_speed
819call_pending (EV_P) 1208call_pending (EV_P)
820{ 1209{
821 int pri; 1210 int pri;
822 1211
823 for (pri = NUMPRI; pri--; ) 1212 for (pri = NUMPRI; pri--; )
824 while (pendingcnt [pri]) 1213 while (pendingcnt [pri])
825 { 1214 {
826 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827 1216
828 if (p->w) 1217 if (expect_true (p->w))
829 { 1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
830 p->w->pending = 0; 1221 p->w->pending = 0;
831 p->w->cb (EV_A_ p->w, p->events); 1222 EV_CB_INVOKE (p->w, p->events);
832 } 1223 }
833 } 1224 }
834} 1225}
835 1226
836static void 1227void inline_size
837timers_reify (EV_P) 1228timers_reify (EV_P)
838{ 1229{
839 while (timercnt && ((WT)timers [0])->at <= mn_now) 1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
840 { 1231 {
841 struct ev_timer *w = timers [0]; 1232 ev_timer *w = (ev_timer *)timers [0];
842 1233
843 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
844 1235
845 /* first reschedule or stop timer */ 1236 /* first reschedule or stop timer */
846 if (w->repeat) 1237 if (w->repeat)
847 { 1238 {
848 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
849 ((WT)w)->at = mn_now + w->repeat; 1241 ((WT)w)->at += w->repeat;
1242 if (((WT)w)->at < mn_now)
1243 ((WT)w)->at = mn_now;
1244
850 downheap ((WT *)timers, timercnt, 0); 1245 downheap (timers, timercnt, 0);
851 } 1246 }
852 else 1247 else
853 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854 1249
855 event (EV_A_ (W)w, EV_TIMEOUT); 1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856 } 1251 }
857} 1252}
858 1253
859static void 1254#if EV_PERIODIC_ENABLE
1255void inline_size
860periodics_reify (EV_P) 1256periodics_reify (EV_P)
861{ 1257{
862 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
863 { 1259 {
864 struct ev_periodic *w = periodics [0]; 1260 ev_periodic *w = (ev_periodic *)periodics [0];
865 1261
866 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
867 1263
868 /* first reschedule or stop timer */ 1264 /* first reschedule or stop timer */
869 if (w->interval) 1265 if (w->reschedule_cb)
870 { 1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
871 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
872 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
873 downheap ((WT *)periodics, periodiccnt, 0); 1276 downheap (periodics, periodiccnt, 0);
874 } 1277 }
875 else 1278 else
876 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877 1280
878 event (EV_A_ (W)w, EV_PERIODIC); 1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879 } 1282 }
880} 1283}
881 1284
882static void 1285static void noinline
883periodics_reschedule (EV_P) 1286periodics_reschedule (EV_P)
884{ 1287{
885 int i; 1288 int i;
886 1289
887 /* adjust periodics after time jump */ 1290 /* adjust periodics after time jump */
888 for (i = 0; i < periodiccnt; ++i) 1291 for (i = 0; i < periodiccnt; ++i)
889 { 1292 {
890 struct ev_periodic *w = periodics [i]; 1293 ev_periodic *w = (ev_periodic *)periodics [i];
891 1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
892 if (w->interval) 1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306
1307#if EV_IDLE_ENABLE
1308void inline_size
1309idle_reify (EV_P)
1310{
1311 if (expect_false (idleall))
1312 {
1313 int pri;
1314
1315 for (pri = NUMPRI; pri--; )
893 { 1316 {
894 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1317 if (pendingcnt [pri])
1318 break;
895 1319
896 if (fabs (diff) >= 1e-4) 1320 if (idlecnt [pri])
897 { 1321 {
898 ev_periodic_stop (EV_A_ w); 1322 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
899 ev_periodic_start (EV_A_ w); 1323 break;
900
901 i = 0; /* restart loop, inefficient, but time jumps should be rare */
902 } 1324 }
903 } 1325 }
904 } 1326 }
905} 1327}
1328#endif
906 1329
907inline int 1330void inline_speed
908time_update_monotonic (EV_P) 1331time_update (EV_P_ ev_tstamp max_block)
909{
910 mn_now = get_clock ();
911
912 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913 {
914 rt_now = rtmn_diff + mn_now;
915 return 0;
916 }
917 else
918 {
919 now_floor = mn_now;
920 rt_now = ev_time ();
921 return 1;
922 }
923}
924
925static void
926time_update (EV_P)
927{ 1332{
928 int i; 1333 int i;
929 1334
930#if EV_USE_MONOTONIC 1335#if EV_USE_MONOTONIC
931 if (expect_true (have_monotonic)) 1336 if (expect_true (have_monotonic))
932 { 1337 {
933 if (time_update_monotonic (EV_A)) 1338 ev_tstamp odiff = rtmn_diff;
1339
1340 mn_now = get_clock ();
1341
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1343 /* interpolate in the meantime */
1344 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
934 { 1345 {
935 ev_tstamp odiff = rtmn_diff; 1346 ev_rt_now = rtmn_diff + mn_now;
1347 return;
1348 }
936 1349
1350 now_floor = mn_now;
1351 ev_rt_now = ev_time ();
1352
937 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1353 /* loop a few times, before making important decisions.
1354 * on the choice of "4": one iteration isn't enough,
1355 * in case we get preempted during the calls to
1356 * ev_time and get_clock. a second call is almost guaranteed
1357 * to succeed in that case, though. and looping a few more times
1358 * doesn't hurt either as we only do this on time-jumps or
1359 * in the unlikely event of having been preempted here.
1360 */
1361 for (i = 4; --i; )
938 { 1362 {
939 rtmn_diff = rt_now - mn_now; 1363 rtmn_diff = ev_rt_now - mn_now;
940 1364
941 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942 return; /* all is well */ 1366 return; /* all is well */
943 1367
944 rt_now = ev_time (); 1368 ev_rt_now = ev_time ();
945 mn_now = get_clock (); 1369 mn_now = get_clock ();
946 now_floor = mn_now; 1370 now_floor = mn_now;
947 } 1371 }
948 1372
1373# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A);
1375# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 }
1379 else
1380#endif
1381 {
1382 ev_rt_now = ev_time ();
1383
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 {
1386#if EV_PERIODIC_ENABLE
949 periodics_reschedule (EV_A); 1387 periodics_reschedule (EV_A);
950 /* no timer adjustment, as the monotonic clock doesn't jump */ 1388#endif
951 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
952 } 1392 }
953 }
954 else
955#endif
956 {
957 rt_now = ev_time ();
958 1393
959 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960 {
961 periodics_reschedule (EV_A);
962
963 /* adjust timers. this is easy, as the offset is the same for all */
964 for (i = 0; i < timercnt; ++i)
965 ((WT)timers [i])->at += rt_now - mn_now;
966 }
967
968 mn_now = rt_now; 1394 mn_now = ev_rt_now;
969 } 1395 }
970} 1396}
971 1397
972void 1398void
973ev_ref (EV_P) 1399ev_ref (EV_P)
… …
984static int loop_done; 1410static int loop_done;
985 1411
986void 1412void
987ev_loop (EV_P_ int flags) 1413ev_loop (EV_P_ int flags)
988{ 1414{
989 double block;
990 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1416 ? EVUNLOOP_ONE
1417 : EVUNLOOP_CANCEL;
1418
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
991 1420
992 do 1421 do
993 { 1422 {
1423#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid))
1426 {
1427 curpid = getpid ();
1428 postfork = 1;
1429 }
1430#endif
1431
1432#if EV_FORK_ENABLE
1433 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork))
1435 if (forkcnt)
1436 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A);
1439 }
1440#endif
1441
994 /* queue check watchers (and execute them) */ 1442 /* queue prepare watchers (and execute them) */
995 if (expect_false (preparecnt)) 1443 if (expect_false (preparecnt))
996 { 1444 {
997 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998 call_pending (EV_A); 1446 call_pending (EV_A);
999 } 1447 }
1000 1448
1449 if (expect_false (!activecnt))
1450 break;
1451
1452 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork))
1454 loop_fork (EV_A);
1455
1001 /* update fd-related kernel structures */ 1456 /* update fd-related kernel structures */
1002 fd_reify (EV_A); 1457 fd_reify (EV_A);
1003 1458
1004 /* calculate blocking time */ 1459 /* calculate blocking time */
1460 {
1461 ev_tstamp block;
1005 1462
1006 /* we only need this for !monotonic clockor timers, but as we basically 1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1007 always have timers, we just calculate it always */ 1464 block = 0.; /* do not block at all */
1008#if EV_USE_MONOTONIC
1009 if (expect_true (have_monotonic))
1010 time_update_monotonic (EV_A);
1011 else 1465 else
1012#endif
1013 { 1466 {
1014 rt_now = ev_time (); 1467 /* update time to cancel out callback processing overhead */
1015 mn_now = rt_now; 1468 time_update (EV_A_ 1e100);
1016 }
1017 1469
1018 if (flags & EVLOOP_NONBLOCK || idlecnt)
1019 block = 0.;
1020 else
1021 {
1022 block = MAX_BLOCKTIME; 1470 block = MAX_BLOCKTIME;
1023 1471
1024 if (timercnt) 1472 if (timercnt)
1025 { 1473 {
1026 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1027 if (block > to) block = to; 1475 if (block > to) block = to;
1028 } 1476 }
1029 1477
1478#if EV_PERIODIC_ENABLE
1030 if (periodiccnt) 1479 if (periodiccnt)
1031 { 1480 {
1032 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1033 if (block > to) block = to; 1482 if (block > to) block = to;
1034 } 1483 }
1484#endif
1035 1485
1036 if (block < 0.) block = 0.; 1486 if (expect_false (block < 0.)) block = 0.;
1037 } 1487 }
1038 1488
1489 ++loop_count;
1039 method_poll (EV_A_ block); 1490 backend_poll (EV_A_ block);
1040 1491
1041 /* update rt_now, do magic */ 1492 /* update ev_rt_now, do magic */
1042 time_update (EV_A); 1493 time_update (EV_A_ block);
1494 }
1043 1495
1044 /* queue pending timers and reschedule them */ 1496 /* queue pending timers and reschedule them */
1045 timers_reify (EV_A); /* relative timers called last */ 1497 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE
1046 periodics_reify (EV_A); /* absolute timers called first */ 1499 periodics_reify (EV_A); /* absolute timers called first */
1500#endif
1047 1501
1502#if EV_IDLE_ENABLE
1048 /* queue idle watchers unless io or timers are pending */ 1503 /* queue idle watchers unless other events are pending */
1049 if (!pendingcnt) 1504 idle_reify (EV_A);
1050 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1505#endif
1051 1506
1052 /* queue check watchers, to be executed first */ 1507 /* queue check watchers, to be executed first */
1053 if (checkcnt) 1508 if (expect_false (checkcnt))
1054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055 1510
1056 call_pending (EV_A); 1511 call_pending (EV_A);
1512
1057 } 1513 }
1058 while (activecnt && !loop_done); 1514 while (expect_true (activecnt && !loop_done));
1059 1515
1060 if (loop_done != 2) 1516 if (loop_done == EVUNLOOP_ONE)
1061 loop_done = 0; 1517 loop_done = EVUNLOOP_CANCEL;
1062} 1518}
1063 1519
1064void 1520void
1065ev_unloop (EV_P_ int how) 1521ev_unloop (EV_P_ int how)
1066{ 1522{
1067 loop_done = how; 1523 loop_done = how;
1068} 1524}
1069 1525
1070/*****************************************************************************/ 1526/*****************************************************************************/
1071 1527
1072inline void 1528void inline_size
1073wlist_add (WL *head, WL elem) 1529wlist_add (WL *head, WL elem)
1074{ 1530{
1075 elem->next = *head; 1531 elem->next = *head;
1076 *head = elem; 1532 *head = elem;
1077} 1533}
1078 1534
1079inline void 1535void inline_size
1080wlist_del (WL *head, WL elem) 1536wlist_del (WL *head, WL elem)
1081{ 1537{
1082 while (*head) 1538 while (*head)
1083 { 1539 {
1084 if (*head == elem) 1540 if (*head == elem)
… …
1089 1545
1090 head = &(*head)->next; 1546 head = &(*head)->next;
1091 } 1547 }
1092} 1548}
1093 1549
1094inline void 1550void inline_speed
1095ev_clear_pending (EV_P_ W w) 1551clear_pending (EV_P_ W w)
1096{ 1552{
1097 if (w->pending) 1553 if (w->pending)
1098 { 1554 {
1099 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1555 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100 w->pending = 0; 1556 w->pending = 0;
1101 } 1557 }
1102} 1558}
1103 1559
1104inline void 1560int
1561ev_clear_pending (EV_P_ void *w)
1562{
1563 W w_ = (W)w;
1564 int pending = w_->pending;
1565
1566 if (expect_true (pending))
1567 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1569 w_->pending = 0;
1570 p->w = 0;
1571 return p->events;
1572 }
1573 else
1574 return 0;
1575}
1576
1577void inline_size
1578pri_adjust (EV_P_ W w)
1579{
1580 int pri = w->priority;
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri;
1584}
1585
1586void inline_speed
1105ev_start (EV_P_ W w, int active) 1587ev_start (EV_P_ W w, int active)
1106{ 1588{
1107 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1589 pri_adjust (EV_A_ w);
1108 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109
1110 w->active = active; 1590 w->active = active;
1111 ev_ref (EV_A); 1591 ev_ref (EV_A);
1112} 1592}
1113 1593
1114inline void 1594void inline_size
1115ev_stop (EV_P_ W w) 1595ev_stop (EV_P_ W w)
1116{ 1596{
1117 ev_unref (EV_A); 1597 ev_unref (EV_A);
1118 w->active = 0; 1598 w->active = 0;
1119} 1599}
1120 1600
1121/*****************************************************************************/ 1601/*****************************************************************************/
1122 1602
1123void 1603void noinline
1124ev_io_start (EV_P_ struct ev_io *w) 1604ev_io_start (EV_P_ ev_io *w)
1125{ 1605{
1126 int fd = w->fd; 1606 int fd = w->fd;
1127 1607
1128 if (ev_is_active (w)) 1608 if (expect_false (ev_is_active (w)))
1129 return; 1609 return;
1130 1610
1131 assert (("ev_io_start called with negative fd", fd >= 0)); 1611 assert (("ev_io_start called with negative fd", fd >= 0));
1132 1612
1133 ev_start (EV_A_ (W)w, 1); 1613 ev_start (EV_A_ (W)w, 1);
1134 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1615 wlist_add (&anfds[fd].head, (WL)w);
1136 1616
1137 fd_change (EV_A_ fd); 1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET;
1138} 1619}
1139 1620
1140void 1621void noinline
1141ev_io_stop (EV_P_ struct ev_io *w) 1622ev_io_stop (EV_P_ ev_io *w)
1142{ 1623{
1143 ev_clear_pending (EV_A_ (W)w); 1624 clear_pending (EV_A_ (W)w);
1144 if (!ev_is_active (w)) 1625 if (expect_false (!ev_is_active (w)))
1145 return; 1626 return;
1146 1627
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1629
1147 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1630 wlist_del (&anfds[w->fd].head, (WL)w);
1148 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1149 1632
1150 fd_change (EV_A_ w->fd); 1633 fd_change (EV_A_ w->fd, 1);
1151} 1634}
1152 1635
1153void 1636void noinline
1154ev_timer_start (EV_P_ struct ev_timer *w) 1637ev_timer_start (EV_P_ ev_timer *w)
1155{ 1638{
1156 if (ev_is_active (w)) 1639 if (expect_false (ev_is_active (w)))
1157 return; 1640 return;
1158 1641
1159 ((WT)w)->at += mn_now; 1642 ((WT)w)->at += mn_now;
1160 1643
1161 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162 1645
1163 ev_start (EV_A_ (W)w, ++timercnt); 1646 ev_start (EV_A_ (W)w, ++timercnt);
1164 array_needsize (timers, timermax, timercnt, ); 1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1165 timers [timercnt - 1] = w; 1648 timers [timercnt - 1] = (WT)w;
1166 upheap ((WT *)timers, timercnt - 1); 1649 upheap (timers, timercnt - 1);
1167 1650
1168 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1169} 1652}
1170 1653
1171void 1654void noinline
1172ev_timer_stop (EV_P_ struct ev_timer *w) 1655ev_timer_stop (EV_P_ ev_timer *w)
1173{ 1656{
1174 ev_clear_pending (EV_A_ (W)w); 1657 clear_pending (EV_A_ (W)w);
1175 if (!ev_is_active (w)) 1658 if (expect_false (!ev_is_active (w)))
1176 return; 1659 return;
1177 1660
1178 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1179 1662
1180 if (((W)w)->active < timercnt--) 1663 {
1664 int active = ((W)w)->active;
1665
1666 if (expect_true (--active < --timercnt))
1181 { 1667 {
1182 timers [((W)w)->active - 1] = timers [timercnt]; 1668 timers [active] = timers [timercnt];
1183 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1669 adjustheap (timers, timercnt, active);
1184 } 1670 }
1671 }
1185 1672
1186 ((WT)w)->at = w->repeat; 1673 ((WT)w)->at -= mn_now;
1187 1674
1188 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1189} 1676}
1190 1677
1191void 1678void noinline
1192ev_timer_again (EV_P_ struct ev_timer *w) 1679ev_timer_again (EV_P_ ev_timer *w)
1193{ 1680{
1194 if (ev_is_active (w)) 1681 if (ev_is_active (w))
1195 { 1682 {
1196 if (w->repeat) 1683 if (w->repeat)
1197 { 1684 {
1198 ((WT)w)->at = mn_now + w->repeat; 1685 ((WT)w)->at = mn_now + w->repeat;
1199 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1686 adjustheap (timers, timercnt, ((W)w)->active - 1);
1200 } 1687 }
1201 else 1688 else
1202 ev_timer_stop (EV_A_ w); 1689 ev_timer_stop (EV_A_ w);
1203 } 1690 }
1204 else if (w->repeat) 1691 else if (w->repeat)
1692 {
1693 w->at = w->repeat;
1205 ev_timer_start (EV_A_ w); 1694 ev_timer_start (EV_A_ w);
1695 }
1206} 1696}
1207 1697
1208void 1698#if EV_PERIODIC_ENABLE
1699void noinline
1209ev_periodic_start (EV_P_ struct ev_periodic *w) 1700ev_periodic_start (EV_P_ ev_periodic *w)
1210{ 1701{
1211 if (ev_is_active (w)) 1702 if (expect_false (ev_is_active (w)))
1212 return; 1703 return;
1213 1704
1705 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval)
1708 {
1214 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1215
1216 /* this formula differs from the one in periodic_reify because we do not always round up */ 1710 /* this formula differs from the one in periodic_reify because we do not always round up */
1217 if (w->interval)
1218 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 }
1713 else
1714 ((WT)w)->at = w->offset;
1219 1715
1220 ev_start (EV_A_ (W)w, ++periodiccnt); 1716 ev_start (EV_A_ (W)w, ++periodiccnt);
1221 array_needsize (periodics, periodicmax, periodiccnt, ); 1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1222 periodics [periodiccnt - 1] = w; 1718 periodics [periodiccnt - 1] = (WT)w;
1223 upheap ((WT *)periodics, periodiccnt - 1); 1719 upheap (periodics, periodiccnt - 1);
1224 1720
1225 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1226} 1722}
1227 1723
1228void 1724void noinline
1229ev_periodic_stop (EV_P_ struct ev_periodic *w) 1725ev_periodic_stop (EV_P_ ev_periodic *w)
1230{ 1726{
1231 ev_clear_pending (EV_A_ (W)w); 1727 clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w)) 1728 if (expect_false (!ev_is_active (w)))
1233 return; 1729 return;
1234 1730
1235 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1236 1732
1237 if (((W)w)->active < periodiccnt--) 1733 {
1734 int active = ((W)w)->active;
1735
1736 if (expect_true (--active < --periodiccnt))
1238 { 1737 {
1239 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1738 periodics [active] = periodics [periodiccnt];
1240 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1739 adjustheap (periodics, periodiccnt, active);
1241 } 1740 }
1741 }
1242 1742
1243 ev_stop (EV_A_ (W)w); 1743 ev_stop (EV_A_ (W)w);
1244} 1744}
1245 1745
1246void 1746void noinline
1247ev_idle_start (EV_P_ struct ev_idle *w) 1747ev_periodic_again (EV_P_ ev_periodic *w)
1248{ 1748{
1249 if (ev_is_active (w)) 1749 /* TODO: use adjustheap and recalculation */
1250 return;
1251
1252 ev_start (EV_A_ (W)w, ++idlecnt);
1253 array_needsize (idles, idlemax, idlecnt, );
1254 idles [idlecnt - 1] = w;
1255}
1256
1257void
1258ev_idle_stop (EV_P_ struct ev_idle *w)
1259{
1260 ev_clear_pending (EV_A_ (W)w);
1261 if (ev_is_active (w))
1262 return;
1263
1264 idles [((W)w)->active - 1] = idles [--idlecnt];
1265 ev_stop (EV_A_ (W)w); 1750 ev_periodic_stop (EV_A_ w);
1751 ev_periodic_start (EV_A_ w);
1266} 1752}
1267 1753#endif
1268void
1269ev_prepare_start (EV_P_ struct ev_prepare *w)
1270{
1271 if (ev_is_active (w))
1272 return;
1273
1274 ev_start (EV_A_ (W)w, ++preparecnt);
1275 array_needsize (prepares, preparemax, preparecnt, );
1276 prepares [preparecnt - 1] = w;
1277}
1278
1279void
1280ev_prepare_stop (EV_P_ struct ev_prepare *w)
1281{
1282 ev_clear_pending (EV_A_ (W)w);
1283 if (ev_is_active (w))
1284 return;
1285
1286 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1287 ev_stop (EV_A_ (W)w);
1288}
1289
1290void
1291ev_check_start (EV_P_ struct ev_check *w)
1292{
1293 if (ev_is_active (w))
1294 return;
1295
1296 ev_start (EV_A_ (W)w, ++checkcnt);
1297 array_needsize (checks, checkmax, checkcnt, );
1298 checks [checkcnt - 1] = w;
1299}
1300
1301void
1302ev_check_stop (EV_P_ struct ev_check *w)
1303{
1304 ev_clear_pending (EV_A_ (W)w);
1305 if (ev_is_active (w))
1306 return;
1307
1308 checks [((W)w)->active - 1] = checks [--checkcnt];
1309 ev_stop (EV_A_ (W)w);
1310}
1311 1754
1312#ifndef SA_RESTART 1755#ifndef SA_RESTART
1313# define SA_RESTART 0 1756# define SA_RESTART 0
1314#endif 1757#endif
1315 1758
1316void 1759void noinline
1317ev_signal_start (EV_P_ struct ev_signal *w) 1760ev_signal_start (EV_P_ ev_signal *w)
1318{ 1761{
1319#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1320 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321#endif 1764#endif
1322 if (ev_is_active (w)) 1765 if (expect_false (ev_is_active (w)))
1323 return; 1766 return;
1324 1767
1325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1326 1769
1770 {
1771#ifndef _WIN32
1772 sigset_t full, prev;
1773 sigfillset (&full);
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1778
1779#ifndef _WIN32
1780 sigprocmask (SIG_SETMASK, &prev, 0);
1781#endif
1782 }
1783
1327 ev_start (EV_A_ (W)w, 1); 1784 ev_start (EV_A_ (W)w, 1);
1328 array_needsize (signals, signalmax, w->signum, signals_init);
1329 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1785 wlist_add (&signals [w->signum - 1].head, (WL)w);
1330 1786
1331 if (!((WL)w)->next) 1787 if (!((WL)w)->next)
1332 { 1788 {
1333#if WIN32 1789#if _WIN32
1334 signal (w->signum, sighandler); 1790 signal (w->signum, sighandler);
1335#else 1791#else
1336 struct sigaction sa; 1792 struct sigaction sa;
1337 sa.sa_handler = sighandler; 1793 sa.sa_handler = sighandler;
1338 sigfillset (&sa.sa_mask); 1794 sigfillset (&sa.sa_mask);
… …
1340 sigaction (w->signum, &sa, 0); 1796 sigaction (w->signum, &sa, 0);
1341#endif 1797#endif
1342 } 1798 }
1343} 1799}
1344 1800
1345void 1801void noinline
1346ev_signal_stop (EV_P_ struct ev_signal *w) 1802ev_signal_stop (EV_P_ ev_signal *w)
1347{ 1803{
1348 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1350 return; 1806 return;
1351 1807
1352 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1808 wlist_del (&signals [w->signum - 1].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1809 ev_stop (EV_A_ (W)w);
1354 1810
1355 if (!signals [w->signum - 1].head) 1811 if (!signals [w->signum - 1].head)
1356 signal (w->signum, SIG_DFL); 1812 signal (w->signum, SIG_DFL);
1357} 1813}
1358 1814
1359void 1815void
1360ev_child_start (EV_P_ struct ev_child *w) 1816ev_child_start (EV_P_ ev_child *w)
1361{ 1817{
1362#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1363 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1364#endif 1820#endif
1365 if (ev_is_active (w)) 1821 if (expect_false (ev_is_active (w)))
1366 return; 1822 return;
1367 1823
1368 ev_start (EV_A_ (W)w, 1); 1824 ev_start (EV_A_ (W)w, 1);
1369 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1370} 1826}
1371 1827
1372void 1828void
1373ev_child_stop (EV_P_ struct ev_child *w) 1829ev_child_stop (EV_P_ ev_child *w)
1374{ 1830{
1375 ev_clear_pending (EV_A_ (W)w); 1831 clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 1832 if (expect_false (!ev_is_active (w)))
1377 return; 1833 return;
1378 1834
1379 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1380 ev_stop (EV_A_ (W)w); 1836 ev_stop (EV_A_ (W)w);
1381} 1837}
1382 1838
1839#if EV_STAT_ENABLE
1840
1841# ifdef _WIN32
1842# undef lstat
1843# define lstat(a,b) _stati64 (a,b)
1844# endif
1845
1846#define DEF_STAT_INTERVAL 5.0074891
1847#define MIN_STAT_INTERVAL 0.1074891
1848
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850
1851#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192
1853
1854static void noinline
1855infy_add (EV_P_ ev_stat *w)
1856{
1857 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1858
1859 if (w->wd < 0)
1860 {
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862
1863 /* monitor some parent directory for speedup hints */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 {
1866 char path [4096];
1867 strcpy (path, w->path);
1868
1869 do
1870 {
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873
1874 char *pend = strrchr (path, '/');
1875
1876 if (!pend)
1877 break; /* whoops, no '/', complain to your admin */
1878
1879 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 }
1884 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887
1888 if (w->wd >= 0)
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1890}
1891
1892static void noinline
1893infy_del (EV_P_ ev_stat *w)
1894{
1895 int slot;
1896 int wd = w->wd;
1897
1898 if (wd < 0)
1899 return;
1900
1901 w->wd = -2;
1902 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1903 wlist_del (&fs_hash [slot].head, (WL)w);
1904
1905 /* remove this watcher, if others are watching it, they will rearm */
1906 inotify_rm_watch (fs_fd, wd);
1907}
1908
1909static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{
1912 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev);
1916 else
1917 {
1918 WL w_;
1919
1920 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1921 {
1922 ev_stat *w = (ev_stat *)w_;
1923 w_ = w_->next; /* lets us remove this watcher and all before it */
1924
1925 if (w->wd == wd || wd == -1)
1926 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 {
1929 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */
1931 }
1932
1933 stat_timer_cb (EV_A_ &w->timer, 0);
1934 }
1935 }
1936 }
1937}
1938
1939static void
1940infy_cb (EV_P_ ev_io *w, int revents)
1941{
1942 char buf [EV_INOTIFY_BUFSIZE];
1943 struct inotify_event *ev = (struct inotify_event *)buf;
1944 int ofs;
1945 int len = read (fs_fd, buf, sizeof (buf));
1946
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949}
1950
1951void inline_size
1952infy_init (EV_P)
1953{
1954 if (fs_fd != -2)
1955 return;
1956
1957 fs_fd = inotify_init ();
1958
1959 if (fs_fd >= 0)
1960 {
1961 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1962 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w);
1964 }
1965}
1966
1967void inline_size
1968infy_fork (EV_P)
1969{
1970 int slot;
1971
1972 if (fs_fd < 0)
1973 return;
1974
1975 close (fs_fd);
1976 fs_fd = inotify_init ();
1977
1978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1979 {
1980 WL w_ = fs_hash [slot].head;
1981 fs_hash [slot].head = 0;
1982
1983 while (w_)
1984 {
1985 ev_stat *w = (ev_stat *)w_;
1986 w_ = w_->next; /* lets us add this watcher */
1987
1988 w->wd = -1;
1989
1990 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else
1993 ev_timer_start (EV_A_ &w->timer);
1994 }
1995
1996 }
1997}
1998
1999#endif
2000
2001void
2002ev_stat_stat (EV_P_ ev_stat *w)
2003{
2004 if (lstat (w->path, &w->attr) < 0)
2005 w->attr.st_nlink = 0;
2006 else if (!w->attr.st_nlink)
2007 w->attr.st_nlink = 1;
2008}
2009
2010static void noinline
2011stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2012{
2013 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2014
2015 /* we copy this here each the time so that */
2016 /* prev has the old value when the callback gets invoked */
2017 w->prev = w->attr;
2018 ev_stat_stat (EV_A_ w);
2019
2020 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2021 if (
2022 w->prev.st_dev != w->attr.st_dev
2023 || w->prev.st_ino != w->attr.st_ino
2024 || w->prev.st_mode != w->attr.st_mode
2025 || w->prev.st_nlink != w->attr.st_nlink
2026 || w->prev.st_uid != w->attr.st_uid
2027 || w->prev.st_gid != w->attr.st_gid
2028 || w->prev.st_rdev != w->attr.st_rdev
2029 || w->prev.st_size != w->attr.st_size
2030 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime
2033 ) {
2034 #if EV_USE_INOTIFY
2035 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */
2038 #endif
2039
2040 ev_feed_event (EV_A_ w, EV_STAT);
2041 }
2042}
2043
2044void
2045ev_stat_start (EV_P_ ev_stat *w)
2046{
2047 if (expect_false (ev_is_active (w)))
2048 return;
2049
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w);
2055
2056 if (w->interval < MIN_STAT_INTERVAL)
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2060 ev_set_priority (&w->timer, ev_priority (w));
2061
2062#if EV_USE_INOTIFY
2063 infy_init (EV_A);
2064
2065 if (fs_fd >= 0)
2066 infy_add (EV_A_ w);
2067 else
2068#endif
2069 ev_timer_start (EV_A_ &w->timer);
2070
2071 ev_start (EV_A_ (W)w, 1);
2072}
2073
2074void
2075ev_stat_stop (EV_P_ ev_stat *w)
2076{
2077 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w)))
2079 return;
2080
2081#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w);
2083#endif
2084 ev_timer_stop (EV_A_ &w->timer);
2085
2086 ev_stop (EV_A_ (W)w);
2087}
2088#endif
2089
2090#if EV_IDLE_ENABLE
2091void
2092ev_idle_start (EV_P_ ev_idle *w)
2093{
2094 if (expect_false (ev_is_active (w)))
2095 return;
2096
2097 pri_adjust (EV_A_ (W)w);
2098
2099 {
2100 int active = ++idlecnt [ABSPRI (w)];
2101
2102 ++idleall;
2103 ev_start (EV_A_ (W)w, active);
2104
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w;
2107 }
2108}
2109
2110void
2111ev_idle_stop (EV_P_ ev_idle *w)
2112{
2113 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w)))
2115 return;
2116
2117 {
2118 int active = ((W)w)->active;
2119
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2122
2123 ev_stop (EV_A_ (W)w);
2124 --idleall;
2125 }
2126}
2127#endif
2128
2129void
2130ev_prepare_start (EV_P_ ev_prepare *w)
2131{
2132 if (expect_false (ev_is_active (w)))
2133 return;
2134
2135 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w;
2138}
2139
2140void
2141ev_prepare_stop (EV_P_ ev_prepare *w)
2142{
2143 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w)))
2145 return;
2146
2147 {
2148 int active = ((W)w)->active;
2149 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active;
2151 }
2152
2153 ev_stop (EV_A_ (W)w);
2154}
2155
2156void
2157ev_check_start (EV_P_ ev_check *w)
2158{
2159 if (expect_false (ev_is_active (w)))
2160 return;
2161
2162 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w;
2165}
2166
2167void
2168ev_check_stop (EV_P_ ev_check *w)
2169{
2170 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w)))
2172 return;
2173
2174 {
2175 int active = ((W)w)->active;
2176 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active;
2178 }
2179
2180 ev_stop (EV_A_ (W)w);
2181}
2182
2183#if EV_EMBED_ENABLE
2184void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w)
2186{
2187 ev_loop (w->other, EVLOOP_NONBLOCK);
2188}
2189
2190static void
2191embed_io_cb (EV_P_ ev_io *io, int revents)
2192{
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194
2195 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else
2198 ev_embed_sweep (loop, w);
2199}
2200
2201static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205
2206 fd_reify (w->other);
2207}
2208
2209void
2210ev_embed_start (EV_P_ ev_embed *w)
2211{
2212 if (expect_false (ev_is_active (w)))
2213 return;
2214
2215 {
2216 struct ev_loop *loop = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_WRITE);
2219 }
2220
2221 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io);
2223
2224 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare);
2227
2228 ev_start (EV_A_ (W)w, 1);
2229}
2230
2231void
2232ev_embed_stop (EV_P_ ev_embed *w)
2233{
2234 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w)))
2236 return;
2237
2238 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare);
2240
2241 ev_stop (EV_A_ (W)w);
2242}
2243#endif
2244
2245#if EV_FORK_ENABLE
2246void
2247ev_fork_start (EV_P_ ev_fork *w)
2248{
2249 if (expect_false (ev_is_active (w)))
2250 return;
2251
2252 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w;
2255}
2256
2257void
2258ev_fork_stop (EV_P_ ev_fork *w)
2259{
2260 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w)))
2262 return;
2263
2264 {
2265 int active = ((W)w)->active;
2266 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active;
2268 }
2269
2270 ev_stop (EV_A_ (W)w);
2271}
2272#endif
2273
1383/*****************************************************************************/ 2274/*****************************************************************************/
1384 2275
1385struct ev_once 2276struct ev_once
1386{ 2277{
1387 struct ev_io io; 2278 ev_io io;
1388 struct ev_timer to; 2279 ev_timer to;
1389 void (*cb)(int revents, void *arg); 2280 void (*cb)(int revents, void *arg);
1390 void *arg; 2281 void *arg;
1391}; 2282};
1392 2283
1393static void 2284static void
… …
1396 void (*cb)(int revents, void *arg) = once->cb; 2287 void (*cb)(int revents, void *arg) = once->cb;
1397 void *arg = once->arg; 2288 void *arg = once->arg;
1398 2289
1399 ev_io_stop (EV_A_ &once->io); 2290 ev_io_stop (EV_A_ &once->io);
1400 ev_timer_stop (EV_A_ &once->to); 2291 ev_timer_stop (EV_A_ &once->to);
1401 free (once); 2292 ev_free (once);
1402 2293
1403 cb (revents, arg); 2294 cb (revents, arg);
1404} 2295}
1405 2296
1406static void 2297static void
1407once_cb_io (EV_P_ struct ev_io *w, int revents) 2298once_cb_io (EV_P_ ev_io *w, int revents)
1408{ 2299{
1409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1410} 2301}
1411 2302
1412static void 2303static void
1413once_cb_to (EV_P_ struct ev_timer *w, int revents) 2304once_cb_to (EV_P_ ev_timer *w, int revents)
1414{ 2305{
1415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1416} 2307}
1417 2308
1418void 2309void
1419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1420{ 2311{
1421 struct ev_once *once = malloc (sizeof (struct ev_once)); 2312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422 2313
1423 if (!once) 2314 if (expect_false (!once))
2315 {
1424 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1425 else 2317 return;
1426 { 2318 }
2319
1427 once->cb = cb; 2320 once->cb = cb;
1428 once->arg = arg; 2321 once->arg = arg;
1429 2322
1430 ev_watcher_init (&once->io, once_cb_io); 2323 ev_init (&once->io, once_cb_io);
1431 if (fd >= 0) 2324 if (fd >= 0)
1432 { 2325 {
1433 ev_io_set (&once->io, fd, events); 2326 ev_io_set (&once->io, fd, events);
1434 ev_io_start (EV_A_ &once->io); 2327 ev_io_start (EV_A_ &once->io);
1435 } 2328 }
1436 2329
1437 ev_watcher_init (&once->to, once_cb_to); 2330 ev_init (&once->to, once_cb_to);
1438 if (timeout >= 0.) 2331 if (timeout >= 0.)
1439 { 2332 {
1440 ev_timer_set (&once->to, timeout, 0.); 2333 ev_timer_set (&once->to, timeout, 0.);
1441 ev_timer_start (EV_A_ &once->to); 2334 ev_timer_start (EV_A_ &once->to);
1442 }
1443 } 2335 }
1444} 2336}
1445 2337
2338#if EV_MULTIPLICITY
2339 #include "ev_wrap.h"
2340#endif
2341
2342#ifdef __cplusplus
2343}
2344#endif
2345

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