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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 1.179 by root, Tue Dec 11 21:04:40 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
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_SELECT_IS_WINSOCKET
208# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
91/**/ 219/**/
92 220
221/*
222 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding
225 * errors are against us.
226 * This value is good at least till the year 4000.
227 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
230
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
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 */ 233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97
98#include "ev.h"
99 234
100#if __GNUC__ >= 3 235#if __GNUC__ >= 3
101# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 237# define noinline __attribute__ ((noinline))
103#else 238#else
104# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
105# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
106#endif 244#endif
107 245
108#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
109#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
110 255
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
114typedef struct ev_watcher *W; 262typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
117 265
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 267
122static int have_monotonic; /* runtime */ 268#ifdef _WIN32
123 269# 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 270#endif
156 271
157/*****************************************************************************/ 272/*****************************************************************************/
158 273
159inline ev_tstamp 274static void (*syserr_cb)(const char *msg);
275
276void
277ev_set_syserr_cb (void (*cb)(const char *msg))
278{
279 syserr_cb = cb;
280}
281
282static void noinline
283syserr (const char *msg)
284{
285 if (!msg)
286 msg = "(libev) system error";
287
288 if (syserr_cb)
289 syserr_cb (msg);
290 else
291 {
292 perror (msg);
293 abort ();
294 }
295}
296
297static void *(*alloc)(void *ptr, long size);
298
299void
300ev_set_allocator (void *(*cb)(void *ptr, long size))
301{
302 alloc = cb;
303}
304
305inline_speed void *
306ev_realloc (void *ptr, long size)
307{
308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
309
310 if (!ptr && size)
311 {
312 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313 abort ();
314 }
315
316 return ptr;
317}
318
319#define ev_malloc(size) ev_realloc (0, (size))
320#define ev_free(ptr) ev_realloc ((ptr), 0)
321
322/*****************************************************************************/
323
324typedef struct
325{
326 WL head;
327 unsigned char events;
328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
332} ANFD;
333
334typedef struct
335{
336 W w;
337 int events;
338} ANPENDING;
339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
347#if EV_MULTIPLICITY
348
349 struct ev_loop
350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
353 #define VAR(name,decl) decl;
354 #include "ev_vars.h"
355 #undef VAR
356 };
357 #include "ev_wrap.h"
358
359 static struct ev_loop default_loop_struct;
360 struct ev_loop *ev_default_loop_ptr;
361
362#else
363
364 ev_tstamp ev_rt_now;
365 #define VAR(name,decl) static decl;
366 #include "ev_vars.h"
367 #undef VAR
368
369 static int ev_default_loop_ptr;
370
371#endif
372
373/*****************************************************************************/
374
375ev_tstamp
160ev_time (void) 376ev_time (void)
161{ 377{
162#if EV_USE_REALTIME 378#if EV_USE_REALTIME
163 struct timespec ts; 379 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
168 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
169 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
170#endif 386#endif
171} 387}
172 388
173inline ev_tstamp 389ev_tstamp inline_size
174get_clock (void) 390get_clock (void)
175{ 391{
176#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
177 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
178 { 394 {
… …
183#endif 399#endif
184 400
185 return ev_time (); 401 return ev_time ();
186} 402}
187 403
404#if EV_MULTIPLICITY
188ev_tstamp 405ev_tstamp
189ev_now (EV_P) 406ev_now (EV_P)
190{ 407{
191 return rt_now; 408 return ev_rt_now;
192} 409}
410#endif
193 411
194#define array_roundsize(base,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
195 416
417 do
418 ncur <<= 1;
419 while (cnt > ncur);
420
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096)
423 {
424 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
426 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem;
428 }
429
430 return ncur;
431}
432
433static noinline void *
434array_realloc (int elem, void *base, int *cur, int cnt)
435{
436 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur);
438}
439
196#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
197 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
198 { \ 442 { \
199 int newcnt = cur; \ 443 int ocur_ = (cur); \
200 do \ 444 (base) = (type *)array_realloc \
201 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
202 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
203 } \ 447 }
204 while ((cnt) > newcnt); \ 448
449#if 0
450#define array_slim(type,stem) \
451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
205 \ 452 { \
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
207 init (base + cur, newcnt - cur); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
208 cur = newcnt; \ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
209 } 456 }
457#endif
458
459#define array_free(stem, idx) \
460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210 461
211/*****************************************************************************/ 462/*****************************************************************************/
212 463
213typedef struct 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
214{ 466{
215 struct ev_watcher_list *head; 467 W w_ = (W)w;
216 unsigned char events; 468 int pri = ABSPRI (w_);
217 unsigned char reify;
218} ANFD;
219 469
220static ANFD *anfds; 470 if (expect_false (w_->pending))
221static int anfdmax; 471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
222 480
223static void 481void inline_speed
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
224anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
225{ 494{
226 while (count--) 495 while (count--)
227 { 496 {
228 base->head = 0; 497 base->head = 0;
… …
231 500
232 ++base; 501 ++base;
233 } 502 }
234} 503}
235 504
236typedef struct 505void 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) 506fd_event (EV_P_ int fd, int revents)
271{ 507{
272 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 509 ev_io *w;
274 510
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 511 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276 { 512 {
277 int ev = w->events & events; 513 int ev = w->events & revents;
278 514
279 if (ev) 515 if (ev)
280 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
281 } 517 }
282} 518}
283 519
284/*****************************************************************************/ 520void
521ev_feed_fd_event (EV_P_ int fd, int revents)
522{
523 if (fd >= 0 && fd < anfdmax)
524 fd_event (EV_A_ fd, revents);
525}
285 526
286static int *fdchanges; 527void inline_size
287static int fdchangemax, fdchangecnt;
288
289static void
290fd_reify (EV_P) 528fd_reify (EV_P)
291{ 529{
292 int i; 530 int i;
293 531
294 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
295 { 533 {
296 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
297 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
298 struct ev_io *w; 536 ev_io *w;
299 537
300 int events = 0; 538 int events = 0;
301 539
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303 events |= w->events; 541 events |= w->events;
304 542
543#if EV_SELECT_IS_WINSOCKET
544 if (events)
545 {
546 unsigned long argp;
547 anfd->handle = _get_osfhandle (fd);
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549 }
550#endif
551
305 anfd->reify = 0; 552 anfd->reify = 0;
306 553
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 555 anfd->events = events;
311 }
312 } 556 }
313 557
314 fdchangecnt = 0; 558 fdchangecnt = 0;
315} 559}
316 560
317static void 561void inline_size
318fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
319{ 563{
320 if (anfds [fd].reify || fdchangecnt < 0) 564 if (expect_false (anfds [fd].reify))
321 return; 565 return;
322 566
323 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
324 568
325 ++fdchangecnt; 569 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
328} 572}
329 573
330static void 574void inline_speed
331fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
332{ 576{
333 struct ev_io *w; 577 ev_io *w;
334 578
335 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
336 { 580 {
337 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 583 }
584}
585
586int inline_size
587fd_valid (int fd)
588{
589#ifdef _WIN32
590 return _get_osfhandle (fd) != -1;
591#else
592 return fcntl (fd, F_GETFD) != -1;
593#endif
340} 594}
341 595
342/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
343static void 597static void noinline
344fd_ebadf (EV_P) 598fd_ebadf (EV_P)
345{ 599{
346 int fd; 600 int fd;
347 601
348 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 603 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
352} 606}
353 607
354/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 609static void noinline
356fd_enomem (EV_P) 610fd_enomem (EV_P)
357{ 611{
358 int fd = anfdmax; 612 int fd;
359 613
360 while (fd--) 614 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 615 if (anfds [fd].events)
362 { 616 {
363 close (fd);
364 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
365 return; 618 return;
366 } 619 }
367} 620}
368 621
622/* usually called after fork if backend needs to re-arm all fds from scratch */
623static void noinline
624fd_rearm_all (EV_P)
625{
626 int fd;
627
628 for (fd = 0; fd < anfdmax; ++fd)
629 if (anfds [fd].events)
630 {
631 anfds [fd].events = 0;
632 fd_change (EV_A_ fd);
633 }
634}
635
369/*****************************************************************************/ 636/*****************************************************************************/
370 637
371static struct ev_timer **timers; 638void inline_speed
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void
378upheap (WT *timers, int k) 639upheap (WT *heap, int k)
379{ 640{
380 WT w = timers [k]; 641 WT w = heap [k];
381 642
382 while (k && timers [k >> 1]->at > w->at) 643 while (k)
383 {
384 timers [k] = timers [k >> 1];
385 timers [k]->active = k + 1;
386 k >>= 1;
387 } 644 {
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; 645 int p = (k - 1) >> 1;
402 646
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 647 if (heap [p]->at <= w->at)
404 ++j;
405
406 if (w->at <= timers [j]->at)
407 break; 648 break;
408 649
409 timers [k] = timers [j]; 650 heap [k] = heap [p];
410 timers [k]->active = k + 1; 651 ((W)heap [k])->active = k + 1;
411 k = j; 652 k = p;
653 }
654
655 heap [k] = w;
656 ((W)heap [k])->active = k + 1;
657
658}
659
660void inline_speed
661downheap (WT *heap, int N, int k)
662{
663 WT w = heap [k];
664
665 for (;;)
412 } 666 {
667 int c = (k << 1) + 1;
413 668
669 if (c >= N)
670 break;
671
672 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673 ? 1 : 0;
674
675 if (w->at <= heap [c]->at)
676 break;
677
678 heap [k] = heap [c];
679 ((W)heap [k])->active = k + 1;
680
681 k = c;
682 }
683
414 timers [k] = w; 684 heap [k] = w;
415 timers [k]->active = k + 1; 685 ((W)heap [k])->active = k + 1;
686}
687
688void inline_size
689adjustheap (WT *heap, int N, int k)
690{
691 upheap (heap, k);
692 downheap (heap, N, k);
416} 693}
417 694
418/*****************************************************************************/ 695/*****************************************************************************/
419 696
420typedef struct 697typedef struct
421{ 698{
422 struct ev_watcher_list *head; 699 WL head;
423 sig_atomic_t volatile gotsig; 700 sig_atomic_t volatile gotsig;
424} ANSIG; 701} ANSIG;
425 702
426static ANSIG *signals; 703static ANSIG *signals;
427static int signalmax; 704static int signalmax;
428 705
429static int sigpipe [2]; 706static int sigpipe [2];
430static sig_atomic_t volatile gotsig; 707static sig_atomic_t volatile gotsig;
431static struct ev_io sigev; 708static ev_io sigev;
432 709
433static void 710void inline_size
434signals_init (ANSIG *base, int count) 711signals_init (ANSIG *base, int count)
435{ 712{
436 while (count--) 713 while (count--)
437 { 714 {
438 base->head = 0; 715 base->head = 0;
… …
443} 720}
444 721
445static void 722static void
446sighandler (int signum) 723sighandler (int signum)
447{ 724{
725#if _WIN32
726 signal (signum, sighandler);
727#endif
728
448 signals [signum - 1].gotsig = 1; 729 signals [signum - 1].gotsig = 1;
449 730
450 if (!gotsig) 731 if (!gotsig)
451 { 732 {
452 int old_errno = errno; 733 int old_errno = errno;
… …
454 write (sigpipe [1], &signum, 1); 735 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 736 errno = old_errno;
456 } 737 }
457} 738}
458 739
740void noinline
741ev_feed_signal_event (EV_P_ int signum)
742{
743 WL w;
744
745#if EV_MULTIPLICITY
746 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747#endif
748
749 --signum;
750
751 if (signum < 0 || signum >= signalmax)
752 return;
753
754 signals [signum].gotsig = 0;
755
756 for (w = signals [signum].head; w; w = w->next)
757 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758}
759
459static void 760static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 761sigcb (EV_P_ ev_io *iow, int revents)
461{ 762{
462 struct ev_watcher_list *w;
463 int signum; 763 int signum;
464 764
465 read (sigpipe [0], &revents, 1); 765 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 766 gotsig = 0;
467 767
468 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
770 ev_feed_signal_event (EV_A_ signum + 1);
771}
772
773void inline_speed
774fd_intern (int fd)
775{
776#ifdef _WIN32
777 int arg = 1;
778 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779#else
780 fcntl (fd, F_SETFD, FD_CLOEXEC);
781 fcntl (fd, F_SETFL, O_NONBLOCK);
782#endif
783}
784
785static void noinline
786siginit (EV_P)
787{
788 fd_intern (sigpipe [0]);
789 fd_intern (sigpipe [1]);
790
791 ev_io_set (&sigev, sigpipe [0], EV_READ);
792 ev_io_start (EV_A_ &sigev);
793 ev_unref (EV_A); /* child watcher should not keep loop alive */
794}
795
796/*****************************************************************************/
797
798static ev_child *childs [EV_PID_HASHSIZE];
799
800#ifndef _WIN32
801
802static ev_signal childev;
803
804void inline_speed
805child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
806{
807 ev_child *w;
808
809 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
810 if (w->pid == pid || !w->pid)
470 { 811 {
471 signals [signum].gotsig = 0; 812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472 813 w->rpid = pid;
473 for (w = signals [signum].head; w; w = w->next) 814 w->rstatus = status;
474 event (EV_A_ (W)w, EV_SIGNAL); 815 ev_feed_event (EV_A_ (W)w, EV_CHILD);
475 } 816 }
476} 817}
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
511 818
512#ifndef WCONTINUED 819#ifndef WCONTINUED
513# define WCONTINUED 0 820# define WCONTINUED 0
514#endif 821#endif
515 822
516static void 823static 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) 824childcb (EV_P_ ev_signal *sw, int revents)
533{ 825{
534 int pid, status; 826 int pid, status;
535 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
538 /* make sure we are called again until all childs have been reaped */ 835 /* make sure we are called again until all childs have been reaped */
836 /* we need to do it this way so that the callback gets called before we continue */
539 event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 838
541 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 841 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
543 }
544} 842}
545 843
546#endif 844#endif
547 845
548/*****************************************************************************/ 846/*****************************************************************************/
549 847
848#if EV_USE_PORT
849# include "ev_port.c"
850#endif
550#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
551# include "ev_kqueue.c" 852# include "ev_kqueue.c"
552#endif 853#endif
553#if EV_USE_EPOLL 854#if EV_USE_EPOLL
554# include "ev_epoll.c" 855# include "ev_epoll.c"
555#endif 856#endif
556#if EV_USEV_POLL 857#if EV_USE_POLL
557# include "ev_poll.c" 858# include "ev_poll.c"
558#endif 859#endif
559#if EV_USE_SELECT 860#if EV_USE_SELECT
560# include "ev_select.c" 861# include "ev_select.c"
561#endif 862#endif
… …
571{ 872{
572 return EV_VERSION_MINOR; 873 return EV_VERSION_MINOR;
573} 874}
574 875
575/* return true if we are running with elevated privileges and should ignore env variables */ 876/* return true if we are running with elevated privileges and should ignore env variables */
576static int 877int inline_size
577enable_secure (void) 878enable_secure (void)
578{ 879{
579#ifdef WIN32 880#ifdef _WIN32
580 return 0; 881 return 0;
581#else 882#else
582 return getuid () != geteuid () 883 return getuid () != geteuid ()
583 || getgid () != getegid (); 884 || getgid () != getegid ();
584#endif 885#endif
585} 886}
586 887
587int 888unsigned int
588ev_method (EV_P) 889ev_supported_backends (void)
589{ 890{
590 return method; 891 unsigned int flags = 0;
591}
592 892
593int 893 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594ev_init (EV_P_ int methods) 894 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
895 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
897 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
898
899 return flags;
900}
901
902unsigned int
903ev_recommended_backends (void)
595{ 904{
596 if (!method) 905 unsigned int flags = ev_supported_backends ();
906
907#ifndef __NetBSD__
908 /* kqueue is borked on everything but netbsd apparently */
909 /* it usually doesn't work correctly on anything but sockets and pipes */
910 flags &= ~EVBACKEND_KQUEUE;
911#endif
912#ifdef __APPLE__
913 // flags &= ~EVBACKEND_KQUEUE; for documentation
914 flags &= ~EVBACKEND_POLL;
915#endif
916
917 return flags;
918}
919
920unsigned int
921ev_embeddable_backends (void)
922{
923 return EVBACKEND_EPOLL
924 | EVBACKEND_KQUEUE
925 | EVBACKEND_PORT;
926}
927
928unsigned int
929ev_backend (EV_P)
930{
931 return backend;
932}
933
934unsigned int
935ev_loop_count (EV_P)
936{
937 return loop_count;
938}
939
940static void noinline
941loop_init (EV_P_ unsigned int flags)
942{
943 if (!backend)
597 { 944 {
598#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
599 { 946 {
600 struct timespec ts; 947 struct timespec ts;
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 948 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 949 have_monotonic = 1;
603 } 950 }
604#endif 951#endif
605 952
606 rt_now = ev_time (); 953 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 954 mn_now = get_clock ();
608 now_floor = mn_now; 955 now_floor = mn_now;
609 diff = rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
610 957
611 if (pipe (sigpipe)) 958 /* pid check not overridable via env */
612 return 0; 959#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid ();
962#endif
613 963
614 if (methods == EVMETHOD_AUTO) 964 if (!(flags & EVFLAG_NOENV)
615 if (!enable_secure () && getenv ("LIBmethodS")) 965 && !enable_secure ()
616 methods = atoi (getenv ("LIBmethodS")); 966 && getenv ("LIBEV_FLAGS"))
617 else 967 flags = atoi (getenv ("LIBEV_FLAGS"));
618 methods = EVMETHOD_ANY;
619 968
620 method = 0; 969 if (!(flags & 0x0000ffffUL))
970 flags |= ev_recommended_backends ();
971
972 backend = 0;
973 backend_fd = -1;
974#if EV_USE_INOTIFY
975 fs_fd = -2;
976#endif
977
978#if EV_USE_PORT
979 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980#endif
621#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623#endif 983#endif
624#if EV_USE_EPOLL 984#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 985 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626#endif 986#endif
627#if EV_USEV_POLL 987#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629#endif 989#endif
630#if EV_USE_SELECT 990#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632#endif 992#endif
633 993
634 if (method) 994 ev_init (&sigev, sigcb);
995 ev_set_priority (&sigev, EV_MAXPRI);
996 }
997}
998
999static void noinline
1000loop_destroy (EV_P)
1001{
1002 int i;
1003
1004#if EV_USE_INOTIFY
1005 if (fs_fd >= 0)
1006 close (fs_fd);
1007#endif
1008
1009 if (backend_fd >= 0)
1010 close (backend_fd);
1011
1012#if EV_USE_PORT
1013 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1014#endif
1015#if EV_USE_KQUEUE
1016 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1017#endif
1018#if EV_USE_EPOLL
1019 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1020#endif
1021#if EV_USE_POLL
1022 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1023#endif
1024#if EV_USE_SELECT
1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1026#endif
1027
1028 for (i = NUMPRI; i--; )
1029 {
1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
1035
1036 /* have to use the microsoft-never-gets-it-right macro */
1037 array_free (fdchange, EMPTY);
1038 array_free (timer, EMPTY);
1039#if EV_PERIODIC_ENABLE
1040 array_free (periodic, EMPTY);
1041#endif
1042 array_free (prepare, EMPTY);
1043 array_free (check, EMPTY);
1044
1045 backend = 0;
1046}
1047
1048void inline_size infy_fork (EV_P);
1049
1050void inline_size
1051loop_fork (EV_P)
1052{
1053#if EV_USE_PORT
1054 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055#endif
1056#if EV_USE_KQUEUE
1057 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1058#endif
1059#if EV_USE_EPOLL
1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1061#endif
1062#if EV_USE_INOTIFY
1063 infy_fork (EV_A);
1064#endif
1065
1066 if (ev_is_active (&sigev))
1067 {
1068 /* default loop */
1069
1070 ev_ref (EV_A);
1071 ev_io_stop (EV_A_ &sigev);
1072 close (sigpipe [0]);
1073 close (sigpipe [1]);
1074
1075 while (pipe (sigpipe))
1076 syserr ("(libev) error creating pipe");
1077
1078 siginit (EV_A);
1079 }
1080
1081 postfork = 0;
1082}
1083
1084#if EV_MULTIPLICITY
1085struct ev_loop *
1086ev_loop_new (unsigned int flags)
1087{
1088 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089
1090 memset (loop, 0, sizeof (struct ev_loop));
1091
1092 loop_init (EV_A_ flags);
1093
1094 if (ev_backend (EV_A))
1095 return loop;
1096
1097 return 0;
1098}
1099
1100void
1101ev_loop_destroy (EV_P)
1102{
1103 loop_destroy (EV_A);
1104 ev_free (loop);
1105}
1106
1107void
1108ev_loop_fork (EV_P)
1109{
1110 postfork = 1;
1111}
1112
1113#endif
1114
1115#if EV_MULTIPLICITY
1116struct ev_loop *
1117ev_default_loop_init (unsigned int flags)
1118#else
1119int
1120ev_default_loop (unsigned int flags)
1121#endif
1122{
1123 if (sigpipe [0] == sigpipe [1])
1124 if (pipe (sigpipe))
1125 return 0;
1126
1127 if (!ev_default_loop_ptr)
1128 {
1129#if EV_MULTIPLICITY
1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131#else
1132 ev_default_loop_ptr = 1;
1133#endif
1134
1135 loop_init (EV_A_ flags);
1136
1137 if (ev_backend (EV_A))
635 { 1138 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 1139 siginit (EV_A);
639 1140
640#ifndef WIN32 1141#ifndef _WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 1142 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 1143 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 1144 ev_signal_start (EV_A_ &childev);
1145 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 1146#endif
645 } 1147 }
1148 else
1149 ev_default_loop_ptr = 0;
646 } 1150 }
647 1151
648 return method; 1152 return ev_default_loop_ptr;
1153}
1154
1155void
1156ev_default_destroy (void)
1157{
1158#if EV_MULTIPLICITY
1159 struct ev_loop *loop = ev_default_loop_ptr;
1160#endif
1161
1162#ifndef _WIN32
1163 ev_ref (EV_A); /* child watcher */
1164 ev_signal_stop (EV_A_ &childev);
1165#endif
1166
1167 ev_ref (EV_A); /* signal watcher */
1168 ev_io_stop (EV_A_ &sigev);
1169
1170 close (sigpipe [0]); sigpipe [0] = 0;
1171 close (sigpipe [1]); sigpipe [1] = 0;
1172
1173 loop_destroy (EV_A);
1174}
1175
1176void
1177ev_default_fork (void)
1178{
1179#if EV_MULTIPLICITY
1180 struct ev_loop *loop = ev_default_loop_ptr;
1181#endif
1182
1183 if (backend)
1184 postfork = 1;
649} 1185}
650 1186
651/*****************************************************************************/ 1187/*****************************************************************************/
652 1188
653void 1189void
654ev_fork_prepare (void) 1190ev_invoke (EV_P_ void *w, int revents)
655{ 1191{
656 /* nop */ 1192 EV_CB_INVOKE ((W)w, revents);
657} 1193}
658 1194
659void 1195void 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) 1196call_pending (EV_P)
684{ 1197{
685 int pri; 1198 int pri;
686 1199
687 for (pri = NUMPRI; pri--; ) 1200 for (pri = NUMPRI; pri--; )
688 while (pendingcnt [pri]) 1201 while (pendingcnt [pri])
689 { 1202 {
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 1204
692 if (p->w) 1205 if (expect_true (p->w))
693 { 1206 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
694 p->w->pending = 0; 1209 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
696 } 1211 }
697 } 1212 }
698} 1213}
699 1214
700static void 1215void inline_size
701timers_reify (EV_P) 1216timers_reify (EV_P)
702{ 1217{
703 while (timercnt && timers [0]->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 1219 {
705 struct ev_timer *w = timers [0]; 1220 ev_timer *w = timers [0];
1221
1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
706 1223
707 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
708 if (w->repeat) 1225 if (w->repeat)
709 { 1226 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1227 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
711 w->at = mn_now + w->repeat; 1229 ((WT)w)->at += w->repeat;
1230 if (((WT)w)->at < mn_now)
1231 ((WT)w)->at = mn_now;
1232
712 downheap ((WT *)timers, timercnt, 0); 1233 downheap ((WT *)timers, timercnt, 0);
713 } 1234 }
714 else 1235 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1237
717 event ((W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1239 }
719} 1240}
720 1241
721static void 1242#if EV_PERIODIC_ENABLE
1243void inline_size
722periodics_reify (EV_P) 1244periodics_reify (EV_P)
723{ 1245{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1247 {
726 struct ev_periodic *w = periodics [0]; 1248 ev_periodic *w = periodics [0];
1249
1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
727 1251
728 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
729 if (w->interval) 1253 if (w->reschedule_cb)
730 { 1254 {
1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257 downheap ((WT *)periodics, periodiccnt, 0);
1258 }
1259 else if (w->interval)
1260 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1261 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1263 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); 1264 downheap ((WT *)periodics, periodiccnt, 0);
734 } 1265 }
735 else 1266 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1268
738 event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1270 }
740} 1271}
741 1272
742static void 1273static void noinline
743periodics_reschedule (EV_P_ ev_tstamp diff) 1274periodics_reschedule (EV_P)
744{ 1275{
745 int i; 1276 int i;
746 1277
747 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
749 { 1280 {
750 struct ev_periodic *w = periodics [i]; 1281 ev_periodic *w = periodics [i];
751 1282
1283 if (w->reschedule_cb)
1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 if (w->interval) 1285 else if (w->interval)
1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287 }
1288
1289 /* now rebuild the heap */
1290 for (i = periodiccnt >> 1; i--; )
1291 downheap ((WT *)periodics, periodiccnt, i);
1292}
1293#endif
1294
1295#if EV_IDLE_ENABLE
1296void inline_size
1297idle_reify (EV_P)
1298{
1299 if (expect_false (idleall))
1300 {
1301 int pri;
1302
1303 for (pri = NUMPRI; pri--; )
753 { 1304 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1305 if (pendingcnt [pri])
1306 break;
755 1307
756 if (fabs (diff) >= 1e-4) 1308 if (idlecnt [pri])
757 { 1309 {
758 ev_periodic_stop (EV_A_ w); 1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
759 ev_periodic_start (EV_A_ w); 1311 break;
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 } 1312 }
763 } 1313 }
764 } 1314 }
765} 1315}
1316#endif
766 1317
767inline int 1318void inline_speed
768time_update_monotonic (EV_P) 1319time_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{ 1320{
788 int i; 1321 int i;
789 1322
790#if EV_USE_MONOTONIC 1323#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1324 if (expect_true (have_monotonic))
792 { 1325 {
793 if (time_update_monotonic (EV_A)) 1326 ev_tstamp odiff = rtmn_diff;
1327
1328 mn_now = get_clock ();
1329
1330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1331 /* interpolate in the meantime */
1332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
794 { 1333 {
795 ev_tstamp odiff = diff; 1334 ev_rt_now = rtmn_diff + mn_now;
796 1335 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 } 1336 }
1337
1338 now_floor = mn_now;
1339 ev_rt_now = ev_time ();
1340
1341 /* loop a few times, before making important decisions.
1342 * on the choice of "4": one iteration isn't enough,
1343 * in case we get preempted during the calls to
1344 * ev_time and get_clock. a second call is almost guaranteed
1345 * to succeed in that case, though. and looping a few more times
1346 * doesn't hurt either as we only do this on time-jumps or
1347 * in the unlikely event of having been preempted here.
1348 */
1349 for (i = 4; --i; )
1350 {
1351 rtmn_diff = ev_rt_now - mn_now;
1352
1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1354 return; /* all is well */
1355
1356 ev_rt_now = ev_time ();
1357 mn_now = get_clock ();
1358 now_floor = mn_now;
1359 }
1360
1361# if EV_PERIODIC_ENABLE
1362 periodics_reschedule (EV_A);
1363# endif
1364 /* no timer adjustment, as the monotonic clock doesn't jump */
1365 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
812 } 1366 }
813 else 1367 else
814#endif 1368#endif
815 { 1369 {
816 rt_now = ev_time (); 1370 ev_rt_now = ev_time ();
817 1371
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
819 { 1373 {
1374#if EV_PERIODIC_ENABLE
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1375 periodics_reschedule (EV_A);
821 1376#endif
822 /* adjust timers. this is easy, as the offset is the same for all */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
823 for (i = 0; i < timercnt; ++i) 1378 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1380 }
826 1381
827 mn_now = rt_now; 1382 mn_now = ev_rt_now;
828 } 1383 }
829} 1384}
830 1385
831void 1386void
832ev_ref (EV_P) 1387ev_ref (EV_P)
… …
843static int loop_done; 1398static int loop_done;
844 1399
845void 1400void
846ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
847{ 1402{
848 double block;
849 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1404 ? EVUNLOOP_ONE
1405 : EVUNLOOP_CANCEL;
1406
1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
850 1408
851 do 1409 do
852 { 1410 {
1411#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid))
1414 {
1415 curpid = getpid ();
1416 postfork = 1;
1417 }
1418#endif
1419
1420#if EV_FORK_ENABLE
1421 /* we might have forked, so queue fork handlers */
1422 if (expect_false (postfork))
1423 if (forkcnt)
1424 {
1425 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426 call_pending (EV_A);
1427 }
1428#endif
1429
853 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
854 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
855 { 1432 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1434 call_pending (EV_A);
858 } 1435 }
859 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1440 /* we might have forked, so reify kernel state if necessary */
1441 if (expect_false (postfork))
1442 loop_fork (EV_A);
1443
860 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1445 fd_reify (EV_A);
862 1446
863 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
864 1450
865 /* we only need this for !monotonic clockor timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
866 always have timers, we just calculate it always */ 1452 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 1453 else
871#endif
872 { 1454 {
873 rt_now = ev_time (); 1455 /* update time to cancel out callback processing overhead */
874 mn_now = rt_now; 1456 time_update (EV_A_ 1e100);
875 }
876 1457
877 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.;
879 else
880 {
881 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
882 1459
883 if (timercnt) 1460 if (timercnt)
884 { 1461 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
886 if (block > to) block = to; 1463 if (block > to) block = to;
887 } 1464 }
888 1465
1466#if EV_PERIODIC_ENABLE
889 if (periodiccnt) 1467 if (periodiccnt)
890 { 1468 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
892 if (block > to) block = to; 1470 if (block > to) block = to;
893 } 1471 }
1472#endif
894 1473
895 if (block < 0.) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
896 } 1475 }
897 1476
1477 ++loop_count;
898 method_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
899 1479
900 /* update rt_now, do magic */ 1480 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1481 time_update (EV_A_ block);
1482 }
902 1483
903 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1486#if EV_PERIODIC_ENABLE
905 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1488#endif
906 1489
1490#if EV_IDLE_ENABLE
907 /* queue idle watchers unless io or timers are pending */ 1491 /* queue idle watchers unless other events are pending */
908 if (!pendingcnt) 1492 idle_reify (EV_A);
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
910 1494
911 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
912 if (checkcnt) 1496 if (expect_false (checkcnt))
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1498
915 call_pending (EV_A); 1499 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D 1500
917 } 1501 }
918 while (activecnt && !loop_done); 1502 while (expect_true (activecnt && !loop_done));
919 1503
920 if (loop_done != 2) 1504 if (loop_done == EVUNLOOP_ONE)
921 loop_done = 0; 1505 loop_done = EVUNLOOP_CANCEL;
922} 1506}
923 1507
924void 1508void
925ev_unloop (EV_P_ int how) 1509ev_unloop (EV_P_ int how)
926{ 1510{
927 loop_done = how; 1511 loop_done = how;
928} 1512}
929 1513
930/*****************************************************************************/ 1514/*****************************************************************************/
931 1515
932inline void 1516void inline_size
933wlist_add (WL *head, WL elem) 1517wlist_add (WL *head, WL elem)
934{ 1518{
935 elem->next = *head; 1519 elem->next = *head;
936 *head = elem; 1520 *head = elem;
937} 1521}
938 1522
939inline void 1523void inline_size
940wlist_del (WL *head, WL elem) 1524wlist_del (WL *head, WL elem)
941{ 1525{
942 while (*head) 1526 while (*head)
943 { 1527 {
944 if (*head == elem) 1528 if (*head == elem)
… …
949 1533
950 head = &(*head)->next; 1534 head = &(*head)->next;
951 } 1535 }
952} 1536}
953 1537
954inline void 1538void inline_speed
955ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
956{ 1540{
957 if (w->pending) 1541 if (w->pending)
958 { 1542 {
959 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
960 w->pending = 0; 1544 w->pending = 0;
961 } 1545 }
962} 1546}
963 1547
964inline void 1548int
1549ev_clear_pending (EV_P_ void *w)
1550{
1551 W w_ = (W)w;
1552 int pending = w_->pending;
1553
1554 if (expect_true (pending))
1555 {
1556 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1557 w_->pending = 0;
1558 p->w = 0;
1559 return p->events;
1560 }
1561 else
1562 return 0;
1563}
1564
1565void inline_size
1566pri_adjust (EV_P_ W w)
1567{
1568 int pri = w->priority;
1569 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571 w->priority = pri;
1572}
1573
1574void inline_speed
965ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
966{ 1576{
967 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
968 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
969
970 w->active = active; 1578 w->active = active;
971 ev_ref (EV_A); 1579 ev_ref (EV_A);
972} 1580}
973 1581
974inline void 1582void inline_size
975ev_stop (EV_P_ W w) 1583ev_stop (EV_P_ W w)
976{ 1584{
977 ev_unref (EV_A); 1585 ev_unref (EV_A);
978 w->active = 0; 1586 w->active = 0;
979} 1587}
980 1588
981/*****************************************************************************/ 1589/*****************************************************************************/
982 1590
983void 1591void noinline
984ev_io_start (EV_P_ struct ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
985{ 1593{
986 int fd = w->fd; 1594 int fd = w->fd;
987 1595
988 if (ev_is_active (w)) 1596 if (expect_false (ev_is_active (w)))
989 return; 1597 return;
990 1598
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
992 1600
993 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add ((WL *)&anfds[fd].head, (WL)w);
996 1604
997 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd);
998} 1606}
999 1607
1000void 1608void noinline
1001ev_io_stop (EV_P_ struct ev_io *w) 1609ev_io_stop (EV_P_ ev_io *w)
1002{ 1610{
1003 ev_clear_pending (EV_A_ (W)w); 1611 clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1612 if (expect_false (!ev_is_active (w)))
1005 return; 1613 return;
1614
1615 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1006 1616
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1617 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1618 ev_stop (EV_A_ (W)w);
1009 1619
1010 fd_change (EV_A_ w->fd); 1620 fd_change (EV_A_ w->fd);
1011} 1621}
1012 1622
1013void 1623void noinline
1014ev_timer_start (EV_P_ struct ev_timer *w) 1624ev_timer_start (EV_P_ ev_timer *w)
1015{ 1625{
1016 if (ev_is_active (w)) 1626 if (expect_false (ev_is_active (w)))
1017 return; 1627 return;
1018 1628
1019 w->at += mn_now; 1629 ((WT)w)->at += mn_now;
1020 1630
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1631 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1632
1023 ev_start (EV_A_ (W)w, ++timercnt); 1633 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1634 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1025 timers [timercnt - 1] = w; 1635 timers [timercnt - 1] = w;
1026 upheap ((WT *)timers, timercnt - 1); 1636 upheap ((WT *)timers, timercnt - 1);
1027}
1028 1637
1029void 1638 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1639}
1640
1641void noinline
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1642ev_timer_stop (EV_P_ ev_timer *w)
1031{ 1643{
1032 ev_clear_pending (EV_A_ (W)w); 1644 clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1645 if (expect_false (!ev_is_active (w)))
1034 return; 1646 return;
1035 1647
1036 if (w->active < timercnt--) 1648 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1649
1650 {
1651 int active = ((W)w)->active;
1652
1653 if (expect_true (--active < --timercnt))
1037 { 1654 {
1038 timers [w->active - 1] = timers [timercnt]; 1655 timers [active] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1656 adjustheap ((WT *)timers, timercnt, active);
1040 } 1657 }
1658 }
1041 1659
1042 w->at = w->repeat; 1660 ((WT)w)->at -= mn_now;
1043 1661
1044 ev_stop (EV_A_ (W)w); 1662 ev_stop (EV_A_ (W)w);
1045} 1663}
1046 1664
1047void 1665void noinline
1048ev_timer_again (EV_P_ struct ev_timer *w) 1666ev_timer_again (EV_P_ ev_timer *w)
1049{ 1667{
1050 if (ev_is_active (w)) 1668 if (ev_is_active (w))
1051 { 1669 {
1052 if (w->repeat) 1670 if (w->repeat)
1053 { 1671 {
1054 w->at = mn_now + w->repeat; 1672 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1673 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1056 } 1674 }
1057 else 1675 else
1058 ev_timer_stop (EV_A_ w); 1676 ev_timer_stop (EV_A_ w);
1059 } 1677 }
1060 else if (w->repeat) 1678 else if (w->repeat)
1679 {
1680 w->at = w->repeat;
1061 ev_timer_start (EV_A_ w); 1681 ev_timer_start (EV_A_ w);
1682 }
1062} 1683}
1063 1684
1064void 1685#if EV_PERIODIC_ENABLE
1686void noinline
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1687ev_periodic_start (EV_P_ ev_periodic *w)
1066{ 1688{
1067 if (ev_is_active (w)) 1689 if (expect_false (ev_is_active (w)))
1068 return; 1690 return;
1069 1691
1692 if (w->reschedule_cb)
1693 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1694 else if (w->interval)
1695 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1696 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072 /* this formula differs from the one in periodic_reify because we do not always round up */ 1697 /* this formula differs from the one in periodic_reify because we do not always round up */
1073 if (w->interval)
1074 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1698 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699 }
1700 else
1701 ((WT)w)->at = w->offset;
1075 1702
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1703 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1704 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1078 periodics [periodiccnt - 1] = w; 1705 periodics [periodiccnt - 1] = w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1706 upheap ((WT *)periodics, periodiccnt - 1);
1080}
1081 1707
1082void 1708 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1709}
1710
1711void noinline
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1712ev_periodic_stop (EV_P_ ev_periodic *w)
1084{ 1713{
1085 ev_clear_pending (EV_A_ (W)w); 1714 clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1715 if (expect_false (!ev_is_active (w)))
1087 return; 1716 return;
1088 1717
1089 if (w->active < periodiccnt--) 1718 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1719
1720 {
1721 int active = ((W)w)->active;
1722
1723 if (expect_true (--active < --periodiccnt))
1090 { 1724 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1725 periodics [active] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1726 adjustheap ((WT *)periodics, periodiccnt, active);
1093 } 1727 }
1728 }
1094 1729
1095 ev_stop (EV_A_ (W)w); 1730 ev_stop (EV_A_ (W)w);
1096} 1731}
1732
1733void noinline
1734ev_periodic_again (EV_P_ ev_periodic *w)
1735{
1736 /* TODO: use adjustheap and recalculation */
1737 ev_periodic_stop (EV_A_ w);
1738 ev_periodic_start (EV_A_ w);
1739}
1740#endif
1097 1741
1098#ifndef SA_RESTART 1742#ifndef SA_RESTART
1099# define SA_RESTART 0 1743# define SA_RESTART 0
1100#endif 1744#endif
1101 1745
1102void 1746void noinline
1103ev_signal_start (EV_P_ struct ev_signal *w) 1747ev_signal_start (EV_P_ ev_signal *w)
1104{ 1748{
1749#if EV_MULTIPLICITY
1750 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1751#endif
1105 if (ev_is_active (w)) 1752 if (expect_false (ev_is_active (w)))
1106 return; 1753 return;
1107 1754
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1755 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 1756
1110 ev_start (EV_A_ (W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init); 1758 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1759 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113 1760
1114 if (!w->next) 1761 if (!((WL)w)->next)
1115 { 1762 {
1763#if _WIN32
1764 signal (w->signum, sighandler);
1765#else
1116 struct sigaction sa; 1766 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1767 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1768 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1769 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1770 sigaction (w->signum, &sa, 0);
1771#endif
1121 } 1772 }
1122} 1773}
1123 1774
1124void 1775void noinline
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1776ev_signal_stop (EV_P_ ev_signal *w)
1126{ 1777{
1127 ev_clear_pending (EV_A_ (W)w); 1778 clear_pending (EV_A_ (W)w);
1128 if (!ev_is_active (w)) 1779 if (expect_false (!ev_is_active (w)))
1129 return; 1780 return;
1130 1781
1131 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1782 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1132 ev_stop (EV_A_ (W)w); 1783 ev_stop (EV_A_ (W)w);
1133 1784
1134 if (!signals [w->signum - 1].head) 1785 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1786 signal (w->signum, SIG_DFL);
1136} 1787}
1137 1788
1138void 1789void
1139ev_idle_start (EV_P_ struct ev_idle *w) 1790ev_child_start (EV_P_ ev_child *w)
1140{ 1791{
1792#if EV_MULTIPLICITY
1793 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1794#endif
1141 if (ev_is_active (w)) 1795 if (expect_false (ev_is_active (w)))
1142 return; 1796 return;
1143 1797
1144 ev_start (EV_A_ (W)w, ++idlecnt); 1798 ev_start (EV_A_ (W)w, 1);
1145 array_needsize (idles, idlemax, idlecnt, ); 1799 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1146 idles [idlecnt - 1] = w;
1147} 1800}
1148 1801
1149void 1802void
1150ev_idle_stop (EV_P_ struct ev_idle *w) 1803ev_child_stop (EV_P_ ev_child *w)
1151{ 1804{
1152 ev_clear_pending (EV_A_ (W)w); 1805 clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w)) 1806 if (expect_false (!ev_is_active (w)))
1154 return; 1807 return;
1155 1808
1156 idles [w->active - 1] = idles [--idlecnt]; 1809 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1157 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1158} 1811}
1159 1812
1813#if EV_STAT_ENABLE
1814
1815# ifdef _WIN32
1816# undef lstat
1817# define lstat(a,b) _stati64 (a,b)
1818# endif
1819
1820#define DEF_STAT_INTERVAL 5.0074891
1821#define MIN_STAT_INTERVAL 0.1074891
1822
1823static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1824
1825#if EV_USE_INOTIFY
1826# define EV_INOTIFY_BUFSIZE 8192
1827
1828static void noinline
1829infy_add (EV_P_ ev_stat *w)
1830{
1831 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1832
1833 if (w->wd < 0)
1834 {
1835 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1836
1837 /* monitor some parent directory for speedup hints */
1838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1839 {
1840 char path [4096];
1841 strcpy (path, w->path);
1842
1843 do
1844 {
1845 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1846 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1847
1848 char *pend = strrchr (path, '/');
1849
1850 if (!pend)
1851 break; /* whoops, no '/', complain to your admin */
1852
1853 *pend = 0;
1854 w->wd = inotify_add_watch (fs_fd, path, mask);
1855 }
1856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1857 }
1858 }
1859 else
1860 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1861
1862 if (w->wd >= 0)
1863 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1864}
1865
1866static void noinline
1867infy_del (EV_P_ ev_stat *w)
1868{
1869 int slot;
1870 int wd = w->wd;
1871
1872 if (wd < 0)
1873 return;
1874
1875 w->wd = -2;
1876 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1877 wlist_del (&fs_hash [slot].head, (WL)w);
1878
1879 /* remove this watcher, if others are watching it, they will rearm */
1880 inotify_rm_watch (fs_fd, wd);
1881}
1882
1883static void noinline
1884infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1885{
1886 if (slot < 0)
1887 /* overflow, need to check for all hahs slots */
1888 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1889 infy_wd (EV_A_ slot, wd, ev);
1890 else
1891 {
1892 WL w_;
1893
1894 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1895 {
1896 ev_stat *w = (ev_stat *)w_;
1897 w_ = w_->next; /* lets us remove this watcher and all before it */
1898
1899 if (w->wd == wd || wd == -1)
1900 {
1901 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1902 {
1903 w->wd = -1;
1904 infy_add (EV_A_ w); /* re-add, no matter what */
1905 }
1906
1907 stat_timer_cb (EV_A_ &w->timer, 0);
1908 }
1909 }
1910 }
1911}
1912
1913static void
1914infy_cb (EV_P_ ev_io *w, int revents)
1915{
1916 char buf [EV_INOTIFY_BUFSIZE];
1917 struct inotify_event *ev = (struct inotify_event *)buf;
1918 int ofs;
1919 int len = read (fs_fd, buf, sizeof (buf));
1920
1921 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1922 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1923}
1924
1925void inline_size
1926infy_init (EV_P)
1927{
1928 if (fs_fd != -2)
1929 return;
1930
1931 fs_fd = inotify_init ();
1932
1933 if (fs_fd >= 0)
1934 {
1935 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1936 ev_set_priority (&fs_w, EV_MAXPRI);
1937 ev_io_start (EV_A_ &fs_w);
1938 }
1939}
1940
1941void inline_size
1942infy_fork (EV_P)
1943{
1944 int slot;
1945
1946 if (fs_fd < 0)
1947 return;
1948
1949 close (fs_fd);
1950 fs_fd = inotify_init ();
1951
1952 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1953 {
1954 WL w_ = fs_hash [slot].head;
1955 fs_hash [slot].head = 0;
1956
1957 while (w_)
1958 {
1959 ev_stat *w = (ev_stat *)w_;
1960 w_ = w_->next; /* lets us add this watcher */
1961
1962 w->wd = -1;
1963
1964 if (fs_fd >= 0)
1965 infy_add (EV_A_ w); /* re-add, no matter what */
1966 else
1967 ev_timer_start (EV_A_ &w->timer);
1968 }
1969
1970 }
1971}
1972
1973#endif
1974
1160void 1975void
1976ev_stat_stat (EV_P_ ev_stat *w)
1977{
1978 if (lstat (w->path, &w->attr) < 0)
1979 w->attr.st_nlink = 0;
1980 else if (!w->attr.st_nlink)
1981 w->attr.st_nlink = 1;
1982}
1983
1984static void noinline
1985stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1986{
1987 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1988
1989 /* we copy this here each the time so that */
1990 /* prev has the old value when the callback gets invoked */
1991 w->prev = w->attr;
1992 ev_stat_stat (EV_A_ w);
1993
1994 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1995 if (
1996 w->prev.st_dev != w->attr.st_dev
1997 || w->prev.st_ino != w->attr.st_ino
1998 || w->prev.st_mode != w->attr.st_mode
1999 || w->prev.st_nlink != w->attr.st_nlink
2000 || w->prev.st_uid != w->attr.st_uid
2001 || w->prev.st_gid != w->attr.st_gid
2002 || w->prev.st_rdev != w->attr.st_rdev
2003 || w->prev.st_size != w->attr.st_size
2004 || w->prev.st_atime != w->attr.st_atime
2005 || w->prev.st_mtime != w->attr.st_mtime
2006 || w->prev.st_ctime != w->attr.st_ctime
2007 ) {
2008 #if EV_USE_INOTIFY
2009 infy_del (EV_A_ w);
2010 infy_add (EV_A_ w);
2011 ev_stat_stat (EV_A_ w); /* avoid race... */
2012 #endif
2013
2014 ev_feed_event (EV_A_ w, EV_STAT);
2015 }
2016}
2017
2018void
2019ev_stat_start (EV_P_ ev_stat *w)
2020{
2021 if (expect_false (ev_is_active (w)))
2022 return;
2023
2024 /* since we use memcmp, we need to clear any padding data etc. */
2025 memset (&w->prev, 0, sizeof (ev_statdata));
2026 memset (&w->attr, 0, sizeof (ev_statdata));
2027
2028 ev_stat_stat (EV_A_ w);
2029
2030 if (w->interval < MIN_STAT_INTERVAL)
2031 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2032
2033 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2034 ev_set_priority (&w->timer, ev_priority (w));
2035
2036#if EV_USE_INOTIFY
2037 infy_init (EV_A);
2038
2039 if (fs_fd >= 0)
2040 infy_add (EV_A_ w);
2041 else
2042#endif
2043 ev_timer_start (EV_A_ &w->timer);
2044
2045 ev_start (EV_A_ (W)w, 1);
2046}
2047
2048void
2049ev_stat_stop (EV_P_ ev_stat *w)
2050{
2051 clear_pending (EV_A_ (W)w);
2052 if (expect_false (!ev_is_active (w)))
2053 return;
2054
2055#if EV_USE_INOTIFY
2056 infy_del (EV_A_ w);
2057#endif
2058 ev_timer_stop (EV_A_ &w->timer);
2059
2060 ev_stop (EV_A_ (W)w);
2061}
2062#endif
2063
2064#if EV_IDLE_ENABLE
2065void
2066ev_idle_start (EV_P_ ev_idle *w)
2067{
2068 if (expect_false (ev_is_active (w)))
2069 return;
2070
2071 pri_adjust (EV_A_ (W)w);
2072
2073 {
2074 int active = ++idlecnt [ABSPRI (w)];
2075
2076 ++idleall;
2077 ev_start (EV_A_ (W)w, active);
2078
2079 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2080 idles [ABSPRI (w)][active - 1] = w;
2081 }
2082}
2083
2084void
2085ev_idle_stop (EV_P_ ev_idle *w)
2086{
2087 clear_pending (EV_A_ (W)w);
2088 if (expect_false (!ev_is_active (w)))
2089 return;
2090
2091 {
2092 int active = ((W)w)->active;
2093
2094 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2095 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2096
2097 ev_stop (EV_A_ (W)w);
2098 --idleall;
2099 }
2100}
2101#endif
2102
2103void
1161ev_prepare_start (EV_P_ struct ev_prepare *w) 2104ev_prepare_start (EV_P_ ev_prepare *w)
1162{ 2105{
1163 if (ev_is_active (w)) 2106 if (expect_false (ev_is_active (w)))
1164 return; 2107 return;
1165 2108
1166 ev_start (EV_A_ (W)w, ++preparecnt); 2109 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, ); 2110 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1168 prepares [preparecnt - 1] = w; 2111 prepares [preparecnt - 1] = w;
1169} 2112}
1170 2113
1171void 2114void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w) 2115ev_prepare_stop (EV_P_ ev_prepare *w)
1173{ 2116{
1174 ev_clear_pending (EV_A_ (W)w); 2117 clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w)) 2118 if (expect_false (!ev_is_active (w)))
1176 return; 2119 return;
1177 2120
2121 {
2122 int active = ((W)w)->active;
1178 prepares [w->active - 1] = prepares [--preparecnt]; 2123 prepares [active - 1] = prepares [--preparecnt];
2124 ((W)prepares [active - 1])->active = active;
2125 }
2126
1179 ev_stop (EV_A_ (W)w); 2127 ev_stop (EV_A_ (W)w);
1180} 2128}
1181 2129
1182void 2130void
1183ev_check_start (EV_P_ struct ev_check *w) 2131ev_check_start (EV_P_ ev_check *w)
1184{ 2132{
1185 if (ev_is_active (w)) 2133 if (expect_false (ev_is_active (w)))
1186 return; 2134 return;
1187 2135
1188 ev_start (EV_A_ (W)w, ++checkcnt); 2136 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, ); 2137 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1190 checks [checkcnt - 1] = w; 2138 checks [checkcnt - 1] = w;
1191} 2139}
1192 2140
1193void 2141void
1194ev_check_stop (EV_P_ struct ev_check *w) 2142ev_check_stop (EV_P_ ev_check *w)
1195{ 2143{
1196 ev_clear_pending (EV_A_ (W)w); 2144 clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w)) 2145 if (expect_false (!ev_is_active (w)))
1198 return; 2146 return;
1199 2147
2148 {
2149 int active = ((W)w)->active;
1200 checks [w->active - 1] = checks [--checkcnt]; 2150 checks [active - 1] = checks [--checkcnt];
2151 ((W)checks [active - 1])->active = active;
2152 }
2153
1201 ev_stop (EV_A_ (W)w); 2154 ev_stop (EV_A_ (W)w);
1202} 2155}
1203 2156
1204void 2157#if EV_EMBED_ENABLE
1205ev_child_start (EV_P_ struct ev_child *w) 2158void noinline
2159ev_embed_sweep (EV_P_ ev_embed *w)
1206{ 2160{
2161 ev_loop (w->loop, EVLOOP_NONBLOCK);
2162}
2163
2164static void
2165embed_cb (EV_P_ ev_io *io, int revents)
2166{
2167 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2168
1207 if (ev_is_active (w)) 2169 if (ev_cb (w))
2170 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2171 else
2172 ev_embed_sweep (loop, w);
2173}
2174
2175void
2176ev_embed_start (EV_P_ ev_embed *w)
2177{
2178 if (expect_false (ev_is_active (w)))
1208 return; 2179 return;
2180
2181 {
2182 struct ev_loop *loop = w->loop;
2183 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2184 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2185 }
2186
2187 ev_set_priority (&w->io, ev_priority (w));
2188 ev_io_start (EV_A_ &w->io);
1209 2189
1210 ev_start (EV_A_ (W)w, 1); 2190 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212} 2191}
1213 2192
1214void 2193void
1215ev_child_stop (EV_P_ struct ev_child *w) 2194ev_embed_stop (EV_P_ ev_embed *w)
1216{ 2195{
1217 ev_clear_pending (EV_A_ (W)w); 2196 clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 2197 if (expect_false (!ev_is_active (w)))
1219 return; 2198 return;
1220 2199
1221 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2200 ev_io_stop (EV_A_ &w->io);
2201
1222 ev_stop (EV_A_ (W)w); 2202 ev_stop (EV_A_ (W)w);
1223} 2203}
2204#endif
2205
2206#if EV_FORK_ENABLE
2207void
2208ev_fork_start (EV_P_ ev_fork *w)
2209{
2210 if (expect_false (ev_is_active (w)))
2211 return;
2212
2213 ev_start (EV_A_ (W)w, ++forkcnt);
2214 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2215 forks [forkcnt - 1] = w;
2216}
2217
2218void
2219ev_fork_stop (EV_P_ ev_fork *w)
2220{
2221 clear_pending (EV_A_ (W)w);
2222 if (expect_false (!ev_is_active (w)))
2223 return;
2224
2225 {
2226 int active = ((W)w)->active;
2227 forks [active - 1] = forks [--forkcnt];
2228 ((W)forks [active - 1])->active = active;
2229 }
2230
2231 ev_stop (EV_A_ (W)w);
2232}
2233#endif
1224 2234
1225/*****************************************************************************/ 2235/*****************************************************************************/
1226 2236
1227struct ev_once 2237struct ev_once
1228{ 2238{
1229 struct ev_io io; 2239 ev_io io;
1230 struct ev_timer to; 2240 ev_timer to;
1231 void (*cb)(int revents, void *arg); 2241 void (*cb)(int revents, void *arg);
1232 void *arg; 2242 void *arg;
1233}; 2243};
1234 2244
1235static void 2245static void
… …
1238 void (*cb)(int revents, void *arg) = once->cb; 2248 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 2249 void *arg = once->arg;
1240 2250
1241 ev_io_stop (EV_A_ &once->io); 2251 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 2252 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 2253 ev_free (once);
1244 2254
1245 cb (revents, arg); 2255 cb (revents, arg);
1246} 2256}
1247 2257
1248static void 2258static void
1249once_cb_io (EV_P_ struct ev_io *w, int revents) 2259once_cb_io (EV_P_ ev_io *w, int revents)
1250{ 2260{
1251 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1252} 2262}
1253 2263
1254static void 2264static void
1255once_cb_to (EV_P_ struct ev_timer *w, int revents) 2265once_cb_to (EV_P_ ev_timer *w, int revents)
1256{ 2266{
1257 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2267 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1258} 2268}
1259 2269
1260void 2270void
1261ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1262{ 2272{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 2273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 2274
1265 if (!once) 2275 if (expect_false (!once))
2276 {
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 2278 return;
1268 { 2279 }
2280
1269 once->cb = cb; 2281 once->cb = cb;
1270 once->arg = arg; 2282 once->arg = arg;
1271 2283
1272 ev_watcher_init (&once->io, once_cb_io); 2284 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 2285 if (fd >= 0)
1274 { 2286 {
1275 ev_io_set (&once->io, fd, events); 2287 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 2288 ev_io_start (EV_A_ &once->io);
1277 } 2289 }
1278 2290
1279 ev_watcher_init (&once->to, once_cb_to); 2291 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 2292 if (timeout >= 0.)
1281 { 2293 {
1282 ev_timer_set (&once->to, timeout, 0.); 2294 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 2295 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 { 2296 }
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} 2297}
1365 2298
2299#ifdef __cplusplus
2300}
1366#endif 2301#endif
1367 2302
1368
1369
1370

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