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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.192 by root, Fri Dec 21 07:55:29 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
42
43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
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
57# endif
58
59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
65# endif
66
67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
73# endif
74
75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
81# endif
82
83# ifndef EV_USE_KQUEUE
84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
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
105# endif
106
33#endif 107#endif
34 108
35#include <math.h> 109#include <math.h>
36#include <stdlib.h> 110#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 111#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 112#include <stddef.h>
41 113
42#include <stdio.h> 114#include <stdio.h>
43 115
44#include <assert.h> 116#include <assert.h>
45#include <errno.h> 117#include <errno.h>
46#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
47#ifndef WIN32 129#ifndef _WIN32
130# include <sys/time.h>
48# 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
49#endif 138# endif
50#include <sys/time.h> 139#endif
51#include <time.h>
52 140
53/**/ 141/**/
54 142
55#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
56# 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
57#endif 149#endif
58 150
59#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
61#endif 153#endif
62 154
63#ifndef EV_USEV_POLL 155#ifndef EV_USE_POLL
64# define EV_USEV_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
65#endif 161#endif
66 162
67#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
69#endif 165#endif
70 166
71#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
73#endif 169#endif
74 170
75#ifndef EV_USE_REALTIME 171#ifndef EV_USE_PORT
76# define EV_USE_REALTIME 1 172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
77#endif 193#endif
78 194
79/**/ 195/**/
80 196
81#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
86#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
89#endif 205#endif
90 206
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
91/**/ 220/**/
92 221
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
93#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) */
94#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) */
95#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96/*#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 */
97 235
98#include "ev.h"
99
100#if __GNUC__ >= 3 236#if __GNUC__ >= 4
101# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 238# define noinline __attribute__ ((noinline))
103#else 239#else
104# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
105# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
106#endif 245#endif
107 246
108#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
109#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
110 256
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
114typedef struct ev_watcher *W; 263typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
117 266
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 268
122static int have_monotonic; /* runtime */ 269#ifdef _WIN32
123 270# include "ev_win32.c"
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132static int vec_max;
133#endif
134
135#if EV_USEV_POLL
136static struct pollfd *polls;
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif
141
142#if EV_USE_EPOLL
143static int epoll_fd = -1;
144
145static struct epoll_event *events;
146static int eventmax;
147#endif
148
149#if EV_USE_KQUEUE
150static int kqueue_fd;
151static struct kevent *kqueue_changes;
152static int kqueue_changemax, kqueue_changecnt;
153static struct kevent *kqueue_events;
154static int kqueue_eventmax;
155#endif 271#endif
156 272
157/*****************************************************************************/ 273/*****************************************************************************/
158 274
159inline ev_tstamp 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
325typedef struct
326{
327 WL head;
328 unsigned char events;
329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
333} ANFD;
334
335typedef struct
336{
337 W w;
338 int events;
339} ANPENDING;
340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
348#if EV_MULTIPLICITY
349
350 struct ev_loop
351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
354 #define VAR(name,decl) decl;
355 #include "ev_vars.h"
356 #undef VAR
357 };
358 #include "ev_wrap.h"
359
360 static struct ev_loop default_loop_struct;
361 struct ev_loop *ev_default_loop_ptr;
362
363#else
364
365 ev_tstamp ev_rt_now;
366 #define VAR(name,decl) static decl;
367 #include "ev_vars.h"
368 #undef VAR
369
370 static int ev_default_loop_ptr;
371
372#endif
373
374/*****************************************************************************/
375
376ev_tstamp
160ev_time (void) 377ev_time (void)
161{ 378{
162#if EV_USE_REALTIME 379#if EV_USE_REALTIME
163 struct timespec ts; 380 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
168 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
169 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
170#endif 387#endif
171} 388}
172 389
173inline ev_tstamp 390ev_tstamp inline_size
174get_clock (void) 391get_clock (void)
175{ 392{
176#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
177 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
178 { 395 {
… …
183#endif 400#endif
184 401
185 return ev_time (); 402 return ev_time ();
186} 403}
187 404
405#if EV_MULTIPLICITY
188ev_tstamp 406ev_tstamp
189ev_now (EV_P) 407ev_now (EV_P)
190{ 408{
191 return rt_now; 409 return ev_rt_now;
192} 410}
411#endif
193 412
194#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;
195 417
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
196#define array_needsize(base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
198 { \ 443 { \
199 int newcnt = cur; \ 444 int ocur_ = (cur); \
200 do \ 445 (base) = (type *)array_realloc \
201 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
202 newcnt = array_roundsize (base, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
203 } \ 448 }
204 while ((cnt) > newcnt); \ 449
450#if 0
451#define array_slim(type,stem) \
452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
205 \ 453 { \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
207 init (base + cur, newcnt - cur); \ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
208 cur = newcnt; \ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
209 } 457 }
458#endif
459
460#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210 462
211/*****************************************************************************/ 463/*****************************************************************************/
212 464
213typedef struct 465void noinline
466ev_feed_event (EV_P_ void *w, int revents)
214{ 467{
215 struct ev_watcher_list *head; 468 W w_ = (W)w;
216 unsigned char events; 469 int pri = ABSPRI (w_);
217 unsigned char reify;
218} ANFD;
219 470
220static ANFD *anfds; 471 if (expect_false (w_->pending))
221static int anfdmax; 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}
222 481
223static void 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
224anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
225{ 495{
226 while (count--) 496 while (count--)
227 { 497 {
228 base->head = 0; 498 base->head = 0;
… …
231 501
232 ++base; 502 ++base;
233 } 503 }
234} 504}
235 505
236typedef struct 506void inline_speed
237{
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245static void
246event (EV_P_ W w, int events)
247{
248 if (w->pending)
249 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events;
251 return;
252 }
253
254 w->pending = ++pendingcnt [ABSPRI (w)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
256 pendings [ABSPRI (w)][w->pending - 1].w = w;
257 pendings [ABSPRI (w)][w->pending - 1].events = events;
258}
259
260static void
261queue_events (EV_P_ W *events, int eventcnt, int type)
262{
263 int i;
264
265 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type);
267}
268
269static void
270fd_event (EV_P_ int fd, int events) 507fd_event (EV_P_ int fd, int revents)
271{ 508{
272 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 510 ev_io *w;
274 511
275 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)
276 { 513 {
277 int ev = w->events & events; 514 int ev = w->events & revents;
278 515
279 if (ev) 516 if (ev)
280 event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
281 } 518 }
282} 519}
283 520
284/*****************************************************************************/ 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}
285 527
286static int *fdchanges; 528void inline_size
287static int fdchangemax, fdchangecnt;
288
289static void
290fd_reify (EV_P) 529fd_reify (EV_P)
291{ 530{
292 int i; 531 int i;
293 532
294 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
295 { 534 {
296 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
297 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
298 struct ev_io *w; 537 ev_io *w;
299 538
300 int events = 0; 539 unsigned char events = 0;
301 540
302 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)
303 events |= w->events; 542 events |= (unsigned char)w->events;
304 543
305 anfd->reify = 0; 544#if EV_SELECT_IS_WINSOCKET
306 545 if (events)
307 if (anfd->events != events)
308 { 546 {
309 method_modify (EV_A_ fd, anfd->events, events); 547 unsigned long argp;
310 anfd->events = events; 548 anfd->handle = _get_osfhandle (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
311 } 550 }
551#endif
552
553 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
557 anfd->reify = 0;
558 anfd->events = events;
559
560 if (o_events != events || o_reify & EV_IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events);
562 }
312 } 563 }
313 564
314 fdchangecnt = 0; 565 fdchangecnt = 0;
315} 566}
316 567
317static void 568void inline_size
318fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
319{ 570{
320 if (anfds [fd].reify || fdchangecnt < 0) 571 unsigned char reify = anfds [fd].reify;
321 return;
322
323 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
324 573
574 if (expect_true (!reify))
575 {
325 ++fdchangecnt; 576 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
328} 580}
329 581
330static void 582void inline_speed
331fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
332{ 584{
333 struct ev_io *w; 585 ev_io *w;
334 586
335 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
336 { 588 {
337 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
338 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);
339 } 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
340} 602}
341 603
342/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
343static void 605static void noinline
344fd_ebadf (EV_P) 606fd_ebadf (EV_P)
345{ 607{
346 int fd; 608 int fd;
347 609
348 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 611 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
352} 614}
353 615
354/* 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 */
355static void 617static void noinline
356fd_enomem (EV_P) 618fd_enomem (EV_P)
357{ 619{
358 int fd = anfdmax; 620 int fd;
359 621
360 while (fd--) 622 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 623 if (anfds [fd].events)
362 { 624 {
363 close (fd);
364 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
365 return; 626 return;
366 } 627 }
367} 628}
368 629
630/* usually called after fork if backend needs to re-arm all fds from scratch */
631static void noinline
632fd_rearm_all (EV_P)
633{
634 int fd;
635
636 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events)
638 {
639 anfds [fd].events = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
641 }
642}
643
369/*****************************************************************************/ 644/*****************************************************************************/
370 645
371static struct ev_timer **timers; 646void inline_speed
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void
378upheap (WT *timers, int k) 647upheap (WT *heap, int k)
379{ 648{
380 WT w = timers [k]; 649 WT w = heap [k];
381 650
382 while (k && timers [k >> 1]->at > w->at) 651 while (k)
383 {
384 timers [k] = timers [k >> 1];
385 timers [k]->active = k + 1;
386 k >>= 1;
387 } 652 {
388
389 timers [k] = w;
390 timers [k]->active = k + 1;
391
392}
393
394static void
395downheap (WT *timers, int N, int k)
396{
397 WT w = timers [k];
398
399 while (k < (N >> 1))
400 {
401 int j = k << 1; 653 int p = (k - 1) >> 1;
402 654
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 655 if (heap [p]->at <= w->at)
404 ++j;
405
406 if (w->at <= timers [j]->at)
407 break; 656 break;
408 657
409 timers [k] = timers [j]; 658 heap [k] = heap [p];
410 timers [k]->active = k + 1; 659 ((W)heap [k])->active = k + 1;
411 k = j; 660 k = p;
661 }
662
663 heap [k] = w;
664 ((W)heap [k])->active = k + 1;
665}
666
667void inline_speed
668downheap (WT *heap, int N, int k)
669{
670 WT w = heap [k];
671
672 for (;;)
412 } 673 {
674 int c = (k << 1) + 1;
413 675
676 if (c >= N)
677 break;
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
685 heap [k] = heap [c];
686 ((W)heap [k])->active = k + 1;
687
688 k = c;
689 }
690
414 timers [k] = w; 691 heap [k] = w;
415 timers [k]->active = k + 1; 692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k)
697{
698 upheap (heap, k);
699 downheap (heap, N, k);
416} 700}
417 701
418/*****************************************************************************/ 702/*****************************************************************************/
419 703
420typedef struct 704typedef struct
421{ 705{
422 struct ev_watcher_list *head; 706 WL head;
423 sig_atomic_t volatile gotsig; 707 sig_atomic_t volatile gotsig;
424} ANSIG; 708} ANSIG;
425 709
426static ANSIG *signals; 710static ANSIG *signals;
427static int signalmax; 711static int signalmax;
428 712
429static int sigpipe [2]; 713static int sigpipe [2];
430static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
431static struct ev_io sigev; 715static ev_io sigev;
432 716
433static void 717void inline_size
434signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
435{ 719{
436 while (count--) 720 while (count--)
437 { 721 {
438 base->head = 0; 722 base->head = 0;
… …
443} 727}
444 728
445static void 729static void
446sighandler (int signum) 730sighandler (int signum)
447{ 731{
732#if _WIN32
733 signal (signum, sighandler);
734#endif
735
448 signals [signum - 1].gotsig = 1; 736 signals [signum - 1].gotsig = 1;
449 737
450 if (!gotsig) 738 if (!gotsig)
451 { 739 {
452 int old_errno = errno; 740 int old_errno = errno;
… …
454 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 743 errno = old_errno;
456 } 744 }
457} 745}
458 746
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
459static void 767static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
461{ 769{
462 struct ev_watcher_list *w;
463 int signum; 770 int signum;
464 771
465 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 773 gotsig = 0;
467 774
468 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
777 ev_feed_signal_event (EV_A_ signum + 1);
778}
779
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
793siginit (EV_P)
794{
795 fd_intern (sigpipe [0]);
796 fd_intern (sigpipe [1]);
797
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */
801}
802
803/*****************************************************************************/
804
805static WL childs [EV_PID_HASHSIZE];
806
807#ifndef _WIN32
808
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)
470 { 818 {
471 signals [signum].gotsig = 0; 819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472 820 w->rpid = pid;
473 for (w = signals [signum].head; w; w = w->next) 821 w->rstatus = status;
474 event (EV_A_ (W)w, EV_SIGNAL); 822 ev_feed_event (EV_A_ (W)w, EV_CHILD);
475 } 823 }
476} 824}
477
478static void
479siginit (EV_P)
480{
481#ifndef WIN32
482 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
483 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485 /* rather than sort out wether we really need nb, set it */
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif
489
490 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev);
492}
493
494/*****************************************************************************/
495
496static struct ev_idle **idles;
497static int idlemax, idlecnt;
498
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506
507static struct ev_child *childs [PID_HASHSIZE];
508static struct ev_signal childev;
509
510#ifndef WIN32
511 825
512#ifndef WCONTINUED 826#ifndef WCONTINUED
513# define WCONTINUED 0 827# define WCONTINUED 0
514#endif 828#endif
515 829
516static void 830static void
517child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
518{
519 struct ev_child *w;
520
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid)
523 {
524 w->priority = sw->priority; /* need to do it *now* */
525 w->rpid = pid;
526 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD);
528 }
529}
530
531static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
533{ 832{
534 int pid, status; 833 int pid, status;
535 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
538 /* 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 */
539 event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 845
541 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
542 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 */
543 }
544} 849}
545 850
546#endif 851#endif
547 852
548/*****************************************************************************/ 853/*****************************************************************************/
549 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
550#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
551# include "ev_kqueue.c" 859# include "ev_kqueue.c"
552#endif 860#endif
553#if EV_USE_EPOLL 861#if EV_USE_EPOLL
554# include "ev_epoll.c" 862# include "ev_epoll.c"
555#endif 863#endif
556#if EV_USEV_POLL 864#if EV_USE_POLL
557# include "ev_poll.c" 865# include "ev_poll.c"
558#endif 866#endif
559#if EV_USE_SELECT 867#if EV_USE_SELECT
560# include "ev_select.c" 868# include "ev_select.c"
561#endif 869#endif
… …
571{ 879{
572 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
573} 881}
574 882
575/* 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 */
576static int 884int inline_size
577enable_secure (void) 885enable_secure (void)
578{ 886{
579#ifdef WIN32 887#ifdef _WIN32
580 return 0; 888 return 0;
581#else 889#else
582 return getuid () != geteuid () 890 return getuid () != geteuid ()
583 || getgid () != getegid (); 891 || getgid () != getegid ();
584#endif 892#endif
585} 893}
586 894
587int 895unsigned int
588ev_method (EV_P) 896ev_supported_backends (void)
589{ 897{
590 return method; 898 unsigned int flags = 0;
591}
592 899
593int 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594ev_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)
595{ 911{
596 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 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
931 return 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)
597 { 951 {
598#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
599 { 953 {
600 struct timespec ts; 954 struct timespec ts;
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 956 have_monotonic = 1;
603 } 957 }
604#endif 958#endif
605 959
606 rt_now = ev_time (); 960 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 961 mn_now = get_clock ();
608 now_floor = mn_now; 962 now_floor = mn_now;
609 diff = rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
610 964
611 if (pipe (sigpipe)) 965 /* pid check not overridable via env */
612 return 0; 966#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid ();
969#endif
613 970
614 if (methods == EVMETHOD_AUTO) 971 if (!(flags & EVFLAG_NOENV)
615 if (!enable_secure () && getenv ("LIBmethodS")) 972 && !enable_secure ()
616 methods = atoi (getenv ("LIBmethodS")); 973 && getenv ("LIBEV_FLAGS"))
617 else 974 flags = atoi (getenv ("LIBEV_FLAGS"));
618 methods = EVMETHOD_ANY;
619 975
620 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984
985#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif
621#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623#endif 990#endif
624#if EV_USE_EPOLL 991#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626#endif 993#endif
627#if EV_USEV_POLL 994#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629#endif 996#endif
630#if EV_USE_SELECT 997#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632#endif 999#endif
633 1000
634 if (method) 1001 ev_init (&sigev, sigcb);
1002 ev_set_priority (&sigev, EV_MAXPRI);
1003 }
1004}
1005
1006static void noinline
1007loop_destroy (EV_P)
1008{
1009 int i;
1010
1011#if EV_USE_INOTIFY
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);
1021#endif
1022#if EV_USE_KQUEUE
1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1024#endif
1025#if EV_USE_EPOLL
1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1027#endif
1028#if EV_USE_POLL
1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1030#endif
1031#if EV_USE_SELECT
1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1033#endif
1034
1035 for (i = NUMPRI; i--; )
1036 {
1037 array_free (pending, [i]);
1038#if EV_IDLE_ENABLE
1039 array_free (idle, [i]);
1040#endif
1041 }
1042
1043 ev_free (anfds); anfdmax = 0;
1044
1045 /* have to use the microsoft-never-gets-it-right macro */
1046 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY);
1050#endif
1051#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY);
1053#endif
1054 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY);
1056
1057 backend = 0;
1058}
1059
1060void inline_size infy_fork (EV_P);
1061
1062void inline_size
1063loop_fork (EV_P)
1064{
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
1071#if EV_USE_EPOLL
1072 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1073#endif
1074#if EV_USE_INOTIFY
1075 infy_fork (EV_A);
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;
1094}
1095
1096#if EV_MULTIPLICITY
1097struct ev_loop *
1098ev_loop_new (unsigned int flags)
1099{
1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101
1102 memset (loop, 0, sizeof (struct ev_loop));
1103
1104 loop_init (EV_A_ flags);
1105
1106 if (ev_backend (EV_A))
1107 return loop;
1108
1109 return 0;
1110}
1111
1112void
1113ev_loop_destroy (EV_P)
1114{
1115 loop_destroy (EV_A);
1116 ev_free (loop);
1117}
1118
1119void
1120ev_loop_fork (EV_P)
1121{
1122 postfork = 1;
1123}
1124
1125#endif
1126
1127#if EV_MULTIPLICITY
1128struct ev_loop *
1129ev_default_loop_init (unsigned int flags)
1130#else
1131int
1132ev_default_loop (unsigned int flags)
1133#endif
1134{
1135 if (sigpipe [0] == sigpipe [1])
1136 if (pipe (sigpipe))
1137 return 0;
1138
1139 if (!ev_default_loop_ptr)
1140 {
1141#if EV_MULTIPLICITY
1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143#else
1144 ev_default_loop_ptr = 1;
1145#endif
1146
1147 loop_init (EV_A_ flags);
1148
1149 if (ev_backend (EV_A))
635 { 1150 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 1151 siginit (EV_A);
639 1152
640#ifndef WIN32 1153#ifndef _WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 1154 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 1155 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 1156 ev_signal_start (EV_A_ &childev);
1157 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 1158#endif
645 } 1159 }
1160 else
1161 ev_default_loop_ptr = 0;
646 } 1162 }
647 1163
648 return method; 1164 return ev_default_loop_ptr;
1165}
1166
1167void
1168ev_default_destroy (void)
1169{
1170#if EV_MULTIPLICITY
1171 struct ev_loop *loop = ev_default_loop_ptr;
1172#endif
1173
1174#ifndef _WIN32
1175 ev_ref (EV_A); /* child watcher */
1176 ev_signal_stop (EV_A_ &childev);
1177#endif
1178
1179 ev_ref (EV_A); /* signal watcher */
1180 ev_io_stop (EV_A_ &sigev);
1181
1182 close (sigpipe [0]); sigpipe [0] = 0;
1183 close (sigpipe [1]); sigpipe [1] = 0;
1184
1185 loop_destroy (EV_A);
1186}
1187
1188void
1189ev_default_fork (void)
1190{
1191#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr;
1193#endif
1194
1195 if (backend)
1196 postfork = 1;
649} 1197}
650 1198
651/*****************************************************************************/ 1199/*****************************************************************************/
652 1200
653void 1201void
654ev_fork_prepare (void) 1202ev_invoke (EV_P_ void *w, int revents)
655{ 1203{
656 /* nop */ 1204 EV_CB_INVOKE ((W)w, revents);
657} 1205}
658 1206
659void 1207void inline_speed
660ev_fork_parent (void)
661{
662 /* nop */
663}
664
665void
666ev_fork_child (void)
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif
672
673 ev_io_stop (&sigev);
674 close (sigpipe [0]);
675 close (sigpipe [1]);
676 pipe (sigpipe);
677 siginit ();
678}
679
680/*****************************************************************************/
681
682static void
683call_pending (EV_P) 1208call_pending (EV_P)
684{ 1209{
685 int pri; 1210 int pri;
686 1211
687 for (pri = NUMPRI; pri--; ) 1212 for (pri = NUMPRI; pri--; )
688 while (pendingcnt [pri]) 1213 while (pendingcnt [pri])
689 { 1214 {
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 1216
692 if (p->w) 1217 if (expect_true (p->w))
693 { 1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
694 p->w->pending = 0; 1221 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 1222 EV_CB_INVOKE (p->w, p->events);
696 } 1223 }
697 } 1224 }
698} 1225}
699 1226
700static void 1227void inline_size
701timers_reify (EV_P) 1228timers_reify (EV_P)
702{ 1229{
703 while (timercnt && timers [0]->at <= mn_now) 1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 1231 {
705 struct ev_timer *w = timers [0]; 1232 ev_timer *w = (ev_timer *)timers [0];
1233
1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
706 1235
707 /* first reschedule or stop timer */ 1236 /* first reschedule or stop timer */
708 if (w->repeat) 1237 if (w->repeat)
709 { 1238 {
710 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
711 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
712 downheap ((WT *)timers, timercnt, 0); 1245 downheap (timers, timercnt, 0);
713 } 1246 }
714 else 1247 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1249
717 event ((W)w, EV_TIMEOUT); 1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1251 }
719} 1252}
720 1253
721static void 1254#if EV_PERIODIC_ENABLE
1255void inline_size
722periodics_reify (EV_P) 1256periodics_reify (EV_P)
723{ 1257{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1259 {
726 struct ev_periodic *w = periodics [0]; 1260 ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
727 1263
728 /* first reschedule or stop timer */ 1264 /* first reschedule or stop timer */
729 if (w->interval) 1265 if (w->reschedule_cb)
730 { 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 {
731 w->at += floor ((rt_now - 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;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0); 1276 downheap (periodics, periodiccnt, 0);
734 } 1277 }
735 else 1278 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1280
738 event (EV_A_ (W)w, EV_PERIODIC); 1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1282 }
740} 1283}
741 1284
742static void 1285static void noinline
743periodics_reschedule (EV_P_ ev_tstamp diff) 1286periodics_reschedule (EV_P)
744{ 1287{
745 int i; 1288 int i;
746 1289
747 /* adjust periodics after time jump */ 1290 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1291 for (i = 0; i < periodiccnt; ++i)
749 { 1292 {
750 struct ev_periodic *w = periodics [i]; 1293 ev_periodic *w = (ev_periodic *)periodics [i];
751 1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 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--; )
753 { 1316 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1317 if (pendingcnt [pri])
1318 break;
755 1319
756 if (fabs (diff) >= 1e-4) 1320 if (idlecnt [pri])
757 { 1321 {
758 ev_periodic_stop (EV_A_ w); 1322 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
759 ev_periodic_start (EV_A_ w); 1323 break;
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 } 1324 }
763 } 1325 }
764 } 1326 }
765} 1327}
1328#endif
766 1329
767inline int 1330void inline_speed
768time_update_monotonic (EV_P) 1331time_update (EV_P_ ev_tstamp max_block)
769{
770 mn_now = get_clock ();
771
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 {
774 rt_now = mn_now + diff;
775 return 0;
776 }
777 else
778 {
779 now_floor = mn_now;
780 rt_now = ev_time ();
781 return 1;
782 }
783}
784
785static void
786time_update (EV_P)
787{ 1332{
788 int i; 1333 int i;
789 1334
790#if EV_USE_MONOTONIC 1335#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1336 if (expect_true (have_monotonic))
792 { 1337 {
793 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))
794 { 1345 {
795 ev_tstamp odiff = diff; 1346 ev_rt_now = rtmn_diff + mn_now;
796 1347 return;
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 {
799 diff = rt_now - mn_now;
800
801 if (fabs (odiff - diff) < MIN_TIMEJUMP)
802 return; /* all is well */
803
804 rt_now = ev_time ();
805 mn_now = get_clock ();
806 now_floor = mn_now;
807 }
808
809 periodics_reschedule (EV_A_ diff - odiff);
810 /* no timer adjustment, as the monotonic clock doesn't jump */
811 } 1348 }
1349
1350 now_floor = mn_now;
1351 ev_rt_now = ev_time ();
1352
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; )
1362 {
1363 rtmn_diff = ev_rt_now - mn_now;
1364
1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1366 return; /* all is well */
1367
1368 ev_rt_now = ev_time ();
1369 mn_now = get_clock ();
1370 now_floor = mn_now;
1371 }
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) */
812 } 1378 }
813 else 1379 else
814#endif 1380#endif
815 { 1381 {
816 rt_now = ev_time (); 1382 ev_rt_now = ev_time ();
817 1383
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
819 { 1385 {
1386#if EV_PERIODIC_ENABLE
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1387 periodics_reschedule (EV_A);
821 1388#endif
822 /* adjust timers. this is easy, as the offset is the same for all */ 1389 /* adjust timers. this is easy, as the offset is the same for all of them */
823 for (i = 0; i < timercnt; ++i) 1390 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1392 }
826 1393
827 mn_now = rt_now; 1394 mn_now = ev_rt_now;
828 } 1395 }
829} 1396}
830 1397
831void 1398void
832ev_ref (EV_P) 1399ev_ref (EV_P)
… …
843static int loop_done; 1410static int loop_done;
844 1411
845void 1412void
846ev_loop (EV_P_ int flags) 1413ev_loop (EV_P_ int flags)
847{ 1414{
848 double block;
849 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 */
850 1420
851 do 1421 do
852 { 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
853 /* queue check watchers (and execute them) */ 1442 /* queue prepare watchers (and execute them) */
854 if (expect_false (preparecnt)) 1443 if (expect_false (preparecnt))
855 { 1444 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1446 call_pending (EV_A);
858 } 1447 }
859 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
860 /* update fd-related kernel structures */ 1456 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1457 fd_reify (EV_A);
862 1458
863 /* calculate blocking time */ 1459 /* calculate blocking time */
1460 {
1461 ev_tstamp block;
864 1462
865 /* we only need this for !monotonic clockor timers, but as we basically 1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
866 always have timers, we just calculate it always */ 1464 block = 0.; /* do not block at all */
867#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A);
870 else 1465 else
871#endif
872 { 1466 {
873 rt_now = ev_time (); 1467 /* update time to cancel out callback processing overhead */
874 mn_now = rt_now; 1468 time_update (EV_A_ 1e100);
875 }
876 1469
877 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.;
879 else
880 {
881 block = MAX_BLOCKTIME; 1470 block = MAX_BLOCKTIME;
882 1471
883 if (timercnt) 1472 if (timercnt)
884 { 1473 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
886 if (block > to) block = to; 1475 if (block > to) block = to;
887 } 1476 }
888 1477
1478#if EV_PERIODIC_ENABLE
889 if (periodiccnt) 1479 if (periodiccnt)
890 { 1480 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
892 if (block > to) block = to; 1482 if (block > to) block = to;
893 } 1483 }
1484#endif
894 1485
895 if (block < 0.) block = 0.; 1486 if (expect_false (block < 0.)) block = 0.;
896 } 1487 }
897 1488
1489 ++loop_count;
898 method_poll (EV_A_ block); 1490 backend_poll (EV_A_ block);
899 1491
900 /* update rt_now, do magic */ 1492 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1493 time_update (EV_A_ block);
1494 }
902 1495
903 /* queue pending timers and reschedule them */ 1496 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1497 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE
905 periodics_reify (EV_A); /* absolute timers called first */ 1499 periodics_reify (EV_A); /* absolute timers called first */
1500#endif
906 1501
1502#if EV_IDLE_ENABLE
907 /* queue idle watchers unless io or timers are pending */ 1503 /* queue idle watchers unless other events are pending */
908 if (!pendingcnt) 1504 idle_reify (EV_A);
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1505#endif
910 1506
911 /* queue check watchers, to be executed first */ 1507 /* queue check watchers, to be executed first */
912 if (checkcnt) 1508 if (expect_false (checkcnt))
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1510
915 call_pending (EV_A); 1511 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D 1512
917 } 1513 }
918 while (activecnt && !loop_done); 1514 while (expect_true (activecnt && !loop_done));
919 1515
920 if (loop_done != 2) 1516 if (loop_done == EVUNLOOP_ONE)
921 loop_done = 0; 1517 loop_done = EVUNLOOP_CANCEL;
922} 1518}
923 1519
924void 1520void
925ev_unloop (EV_P_ int how) 1521ev_unloop (EV_P_ int how)
926{ 1522{
927 loop_done = how; 1523 loop_done = how;
928} 1524}
929 1525
930/*****************************************************************************/ 1526/*****************************************************************************/
931 1527
932inline void 1528void inline_size
933wlist_add (WL *head, WL elem) 1529wlist_add (WL *head, WL elem)
934{ 1530{
935 elem->next = *head; 1531 elem->next = *head;
936 *head = elem; 1532 *head = elem;
937} 1533}
938 1534
939inline void 1535void inline_size
940wlist_del (WL *head, WL elem) 1536wlist_del (WL *head, WL elem)
941{ 1537{
942 while (*head) 1538 while (*head)
943 { 1539 {
944 if (*head == elem) 1540 if (*head == elem)
… …
949 1545
950 head = &(*head)->next; 1546 head = &(*head)->next;
951 } 1547 }
952} 1548}
953 1549
954inline void 1550void inline_speed
955ev_clear_pending (EV_P_ W w) 1551clear_pending (EV_P_ W w)
956{ 1552{
957 if (w->pending) 1553 if (w->pending)
958 { 1554 {
959 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1555 pendings [ABSPRI (w)][w->pending - 1].w = 0;
960 w->pending = 0; 1556 w->pending = 0;
961 } 1557 }
962} 1558}
963 1559
964inline 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
965ev_start (EV_P_ W w, int active) 1587ev_start (EV_P_ W w, int active)
966{ 1588{
967 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1589 pri_adjust (EV_A_ w);
968 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
969
970 w->active = active; 1590 w->active = active;
971 ev_ref (EV_A); 1591 ev_ref (EV_A);
972} 1592}
973 1593
974inline void 1594void inline_size
975ev_stop (EV_P_ W w) 1595ev_stop (EV_P_ W w)
976{ 1596{
977 ev_unref (EV_A); 1597 ev_unref (EV_A);
978 w->active = 0; 1598 w->active = 0;
979} 1599}
980 1600
981/*****************************************************************************/ 1601/*****************************************************************************/
982 1602
983void 1603void noinline
984ev_io_start (EV_P_ struct ev_io *w) 1604ev_io_start (EV_P_ ev_io *w)
985{ 1605{
986 int fd = w->fd; 1606 int fd = w->fd;
987 1607
988 if (ev_is_active (w)) 1608 if (expect_false (ev_is_active (w)))
989 return; 1609 return;
990 1610
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1611 assert (("ev_io_start called with negative fd", fd >= 0));
992 1612
993 ev_start (EV_A_ (W)w, 1); 1613 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1615 wlist_add (&anfds[fd].head, (WL)w);
996 1616
997 fd_change (EV_A_ fd); 1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET;
998} 1619}
999 1620
1000void 1621void noinline
1001ev_io_stop (EV_P_ struct ev_io *w) 1622ev_io_stop (EV_P_ ev_io *w)
1002{ 1623{
1003 ev_clear_pending (EV_A_ (W)w); 1624 clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1625 if (expect_false (!ev_is_active (w)))
1005 return; 1626 return;
1006 1627
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1629
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1630 wlist_del (&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1009 1632
1010 fd_change (EV_A_ w->fd); 1633 fd_change (EV_A_ w->fd, 1);
1011} 1634}
1012 1635
1013void 1636void noinline
1014ev_timer_start (EV_P_ struct ev_timer *w) 1637ev_timer_start (EV_P_ ev_timer *w)
1015{ 1638{
1016 if (ev_is_active (w)) 1639 if (expect_false (ev_is_active (w)))
1017 return; 1640 return;
1018 1641
1019 w->at += mn_now; 1642 ((WT)w)->at += mn_now;
1020 1643
1021 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.));
1022 1645
1023 ev_start (EV_A_ (W)w, ++timercnt); 1646 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1025 timers [timercnt - 1] = w; 1648 timers [timercnt - 1] = (WT)w;
1026 upheap ((WT *)timers, timercnt - 1); 1649 upheap (timers, timercnt - 1);
1027}
1028 1650
1029void 1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1652}
1653
1654void noinline
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1655ev_timer_stop (EV_P_ ev_timer *w)
1031{ 1656{
1032 ev_clear_pending (EV_A_ (W)w); 1657 clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1658 if (expect_false (!ev_is_active (w)))
1034 return; 1659 return;
1035 1660
1036 if (w->active < timercnt--) 1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1662
1663 {
1664 int active = ((W)w)->active;
1665
1666 if (expect_true (--active < --timercnt))
1037 { 1667 {
1038 timers [w->active - 1] = timers [timercnt]; 1668 timers [active] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1669 adjustheap (timers, timercnt, active);
1040 } 1670 }
1671 }
1041 1672
1042 w->at = w->repeat; 1673 ((WT)w)->at -= mn_now;
1043 1674
1044 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1045} 1676}
1046 1677
1047void 1678void noinline
1048ev_timer_again (EV_P_ struct ev_timer *w) 1679ev_timer_again (EV_P_ ev_timer *w)
1049{ 1680{
1050 if (ev_is_active (w)) 1681 if (ev_is_active (w))
1051 { 1682 {
1052 if (w->repeat) 1683 if (w->repeat)
1053 { 1684 {
1054 w->at = mn_now + w->repeat; 1685 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1686 adjustheap (timers, timercnt, ((W)w)->active - 1);
1056 } 1687 }
1057 else 1688 else
1058 ev_timer_stop (EV_A_ w); 1689 ev_timer_stop (EV_A_ w);
1059 } 1690 }
1060 else if (w->repeat) 1691 else if (w->repeat)
1692 {
1693 w->at = w->repeat;
1061 ev_timer_start (EV_A_ w); 1694 ev_timer_start (EV_A_ w);
1695 }
1062} 1696}
1063 1697
1064void 1698#if EV_PERIODIC_ENABLE
1699void noinline
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1700ev_periodic_start (EV_P_ ev_periodic *w)
1066{ 1701{
1067 if (ev_is_active (w)) 1702 if (expect_false (ev_is_active (w)))
1068 return; 1703 return;
1069 1704
1705 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval)
1708 {
1070 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.));
1071
1072 /* 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 */
1073 if (w->interval)
1074 w->at += ceil ((rt_now - 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;
1075 1715
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1716 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1078 periodics [periodiccnt - 1] = w; 1718 periodics [periodiccnt - 1] = (WT)w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1719 upheap (periodics, periodiccnt - 1);
1080}
1081 1720
1082void 1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1722}
1723
1724void noinline
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1725ev_periodic_stop (EV_P_ ev_periodic *w)
1084{ 1726{
1085 ev_clear_pending (EV_A_ (W)w); 1727 clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1728 if (expect_false (!ev_is_active (w)))
1087 return; 1729 return;
1088 1730
1089 if (w->active < periodiccnt--) 1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1732
1733 {
1734 int active = ((W)w)->active;
1735
1736 if (expect_true (--active < --periodiccnt))
1090 { 1737 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1738 periodics [active] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1739 adjustheap (periodics, periodiccnt, active);
1093 } 1740 }
1741 }
1094 1742
1095 ev_stop (EV_A_ (W)w); 1743 ev_stop (EV_A_ (W)w);
1096} 1744}
1745
1746void noinline
1747ev_periodic_again (EV_P_ ev_periodic *w)
1748{
1749 /* TODO: use adjustheap and recalculation */
1750 ev_periodic_stop (EV_A_ w);
1751 ev_periodic_start (EV_A_ w);
1752}
1753#endif
1097 1754
1098#ifndef SA_RESTART 1755#ifndef SA_RESTART
1099# define SA_RESTART 0 1756# define SA_RESTART 0
1100#endif 1757#endif
1101 1758
1102void 1759void noinline
1103ev_signal_start (EV_P_ struct ev_signal *w) 1760ev_signal_start (EV_P_ ev_signal *w)
1104{ 1761{
1762#if EV_MULTIPLICITY
1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif
1105 if (ev_is_active (w)) 1765 if (expect_false (ev_is_active (w)))
1106 return; 1766 return;
1107 1767
1108 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));
1109 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
1110 ev_start (EV_A_ (W)w, 1); 1784 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1785 wlist_add (&signals [w->signum - 1].head, (WL)w);
1113 1786
1114 if (!w->next) 1787 if (!((WL)w)->next)
1115 { 1788 {
1789#if _WIN32
1790 signal (w->signum, sighandler);
1791#else
1116 struct sigaction sa; 1792 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1793 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1794 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1796 sigaction (w->signum, &sa, 0);
1797#endif
1121 } 1798 }
1122} 1799}
1123 1800
1124void 1801void noinline
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1802ev_signal_stop (EV_P_ ev_signal *w)
1126{ 1803{
1127 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1128 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1129 return; 1806 return;
1130 1807
1131 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1808 wlist_del (&signals [w->signum - 1].head, (WL)w);
1132 ev_stop (EV_A_ (W)w); 1809 ev_stop (EV_A_ (W)w);
1133 1810
1134 if (!signals [w->signum - 1].head) 1811 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1812 signal (w->signum, SIG_DFL);
1136} 1813}
1137 1814
1138void 1815void
1139ev_idle_start (EV_P_ struct ev_idle *w) 1816ev_child_start (EV_P_ ev_child *w)
1140{ 1817{
1818#if EV_MULTIPLICITY
1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820#endif
1141 if (ev_is_active (w)) 1821 if (expect_false (ev_is_active (w)))
1142 return; 1822 return;
1143 1823
1144 ev_start (EV_A_ (W)w, ++idlecnt); 1824 ev_start (EV_A_ (W)w, 1);
1145 array_needsize (idles, idlemax, idlecnt, ); 1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1146 idles [idlecnt - 1] = w;
1147} 1826}
1148 1827
1149void 1828void
1150ev_idle_stop (EV_P_ struct ev_idle *w) 1829ev_child_stop (EV_P_ ev_child *w)
1151{ 1830{
1152 ev_clear_pending (EV_A_ (W)w); 1831 clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w)) 1832 if (expect_false (!ev_is_active (w)))
1154 return; 1833 return;
1155 1834
1156 idles [w->active - 1] = idles [--idlecnt]; 1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1157 ev_stop (EV_A_ (W)w); 1836 ev_stop (EV_A_ (W)w);
1158} 1837}
1159 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
1160void 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
1161ev_prepare_start (EV_P_ struct ev_prepare *w) 2130ev_prepare_start (EV_P_ ev_prepare *w)
1162{ 2131{
1163 if (ev_is_active (w)) 2132 if (expect_false (ev_is_active (w)))
1164 return; 2133 return;
1165 2134
1166 ev_start (EV_A_ (W)w, ++preparecnt); 2135 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, ); 2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1168 prepares [preparecnt - 1] = w; 2137 prepares [preparecnt - 1] = w;
1169} 2138}
1170 2139
1171void 2140void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w) 2141ev_prepare_stop (EV_P_ ev_prepare *w)
1173{ 2142{
1174 ev_clear_pending (EV_A_ (W)w); 2143 clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w)) 2144 if (expect_false (!ev_is_active (w)))
1176 return; 2145 return;
1177 2146
2147 {
2148 int active = ((W)w)->active;
1178 prepares [w->active - 1] = prepares [--preparecnt]; 2149 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active;
2151 }
2152
1179 ev_stop (EV_A_ (W)w); 2153 ev_stop (EV_A_ (W)w);
1180} 2154}
1181 2155
1182void 2156void
1183ev_check_start (EV_P_ struct ev_check *w) 2157ev_check_start (EV_P_ ev_check *w)
1184{ 2158{
1185 if (ev_is_active (w)) 2159 if (expect_false (ev_is_active (w)))
1186 return; 2160 return;
1187 2161
1188 ev_start (EV_A_ (W)w, ++checkcnt); 2162 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, ); 2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1190 checks [checkcnt - 1] = w; 2164 checks [checkcnt - 1] = w;
1191} 2165}
1192 2166
1193void 2167void
1194ev_check_stop (EV_P_ struct ev_check *w) 2168ev_check_stop (EV_P_ ev_check *w)
1195{ 2169{
1196 ev_clear_pending (EV_A_ (W)w); 2170 clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w)) 2171 if (expect_false (!ev_is_active (w)))
1198 return; 2172 return;
1199 2173
2174 {
2175 int active = ((W)w)->active;
1200 checks [w->active - 1] = checks [--checkcnt]; 2176 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active;
2178 }
2179
1201 ev_stop (EV_A_ (W)w); 2180 ev_stop (EV_A_ (W)w);
1202} 2181}
1203 2182
1204void 2183#if EV_EMBED_ENABLE
1205ev_child_start (EV_P_ struct ev_child *w) 2184void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w)
1206{ 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
1207 if (ev_is_active (w)) 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)))
1208 return; 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_READ);
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);
1209 2227
1210 ev_start (EV_A_ (W)w, 1); 2228 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212} 2229}
1213 2230
1214void 2231void
1215ev_child_stop (EV_P_ struct ev_child *w) 2232ev_embed_stop (EV_P_ ev_embed *w)
1216{ 2233{
1217 ev_clear_pending (EV_A_ (W)w); 2234 clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 2235 if (expect_false (!ev_is_active (w)))
1219 return; 2236 return;
1220 2237
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2238 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare);
2240
1222 ev_stop (EV_A_ (W)w); 2241 ev_stop (EV_A_ (W)w);
1223} 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
1224 2273
1225/*****************************************************************************/ 2274/*****************************************************************************/
1226 2275
1227struct ev_once 2276struct ev_once
1228{ 2277{
1229 struct ev_io io; 2278 ev_io io;
1230 struct ev_timer to; 2279 ev_timer to;
1231 void (*cb)(int revents, void *arg); 2280 void (*cb)(int revents, void *arg);
1232 void *arg; 2281 void *arg;
1233}; 2282};
1234 2283
1235static void 2284static void
… …
1238 void (*cb)(int revents, void *arg) = once->cb; 2287 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 2288 void *arg = once->arg;
1240 2289
1241 ev_io_stop (EV_A_ &once->io); 2290 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 2291 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 2292 ev_free (once);
1244 2293
1245 cb (revents, arg); 2294 cb (revents, arg);
1246} 2295}
1247 2296
1248static void 2297static void
1249once_cb_io (EV_P_ struct ev_io *w, int revents) 2298once_cb_io (EV_P_ ev_io *w, int revents)
1250{ 2299{
1251 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);
1252} 2301}
1253 2302
1254static void 2303static void
1255once_cb_to (EV_P_ struct ev_timer *w, int revents) 2304once_cb_to (EV_P_ ev_timer *w, int revents)
1256{ 2305{
1257 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);
1258} 2307}
1259 2308
1260void 2309void
1261ev_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)
1262{ 2311{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 2312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 2313
1265 if (!once) 2314 if (expect_false (!once))
2315 {
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 2317 return;
1268 { 2318 }
2319
1269 once->cb = cb; 2320 once->cb = cb;
1270 once->arg = arg; 2321 once->arg = arg;
1271 2322
1272 ev_watcher_init (&once->io, once_cb_io); 2323 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 2324 if (fd >= 0)
1274 { 2325 {
1275 ev_io_set (&once->io, fd, events); 2326 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 2327 ev_io_start (EV_A_ &once->io);
1277 } 2328 }
1278 2329
1279 ev_watcher_init (&once->to, once_cb_to); 2330 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 2331 if (timeout >= 0.)
1281 { 2332 {
1282 ev_timer_set (&once->to, timeout, 0.); 2333 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 2334 ev_timer_start (EV_A_ &once->to);
1284 }
1285 }
1286}
1287
1288/*****************************************************************************/
1289
1290#if 0
1291
1292struct ev_io wio;
1293
1294static void
1295sin_cb (struct ev_io *w, int revents)
1296{
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298}
1299
1300static void
1301ocb (struct ev_timer *w, int revents)
1302{
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304 ev_timer_stop (w);
1305 ev_timer_start (w);
1306}
1307
1308static void
1309scb (struct ev_signal *w, int revents)
1310{
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315
1316static void
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i)
1335 { 2335 }
1336 struct ev_timer *w = t + i;
1337 ev_watcher_init (w, ocb, i);
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339 ev_timer_start (w);
1340 if (drand48 () < 0.5)
1341 ev_timer_stop (w);
1342 }
1343#endif
1344
1345 struct ev_timer t1;
1346 ev_timer_init (&t1, ocb, 5, 10);
1347 ev_timer_start (&t1);
1348
1349 struct ev_signal sig;
1350 ev_signal_init (&sig, scb, SIGQUIT);
1351 ev_signal_start (&sig);
1352
1353 struct ev_check cw;
1354 ev_check_init (&cw, gcb);
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364} 2336}
1365 2337
2338#if EV_MULTIPLICITY
2339 #include "ev_wrap.h"
1366#endif 2340#endif
1367 2341
2342#ifdef __cplusplus
2343}
2344#endif
1368 2345
1369
1370

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